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Merge tag 'amd-drm-next-6.5-2023-06-09' of https://gitlab.freedesktop.org/agd5f/linux...
[J-linux.git] / drivers / scsi / megaraid / megaraid_sas_base.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Linux MegaRAID driver for SAS based RAID controllers
4  *
5  *  Copyright (c) 2003-2013  LSI Corporation
6  *  Copyright (c) 2013-2016  Avago Technologies
7  *  Copyright (c) 2016-2018  Broadcom Inc.
8  *
9  *  Authors: Broadcom Inc.
10  *           Sreenivas Bagalkote
11  *           Sumant Patro
12  *           Bo Yang
13  *           Adam Radford
14  *           Kashyap Desai <[email protected]>
15  *           Sumit Saxena <[email protected]>
16  *
17  *  Send feedback to: [email protected]
18  */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <asm/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40 #include <linux/blk-mq-pci.h>
41
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <scsi/scsi_dbg.h>
48 #include "megaraid_sas_fusion.h"
49 #include "megaraid_sas.h"
50
51 /*
52  * Number of sectors per IO command
53  * Will be set in megasas_init_mfi if user does not provide
54  */
55 static unsigned int max_sectors;
56 module_param_named(max_sectors, max_sectors, int, 0444);
57 MODULE_PARM_DESC(max_sectors,
58         "Maximum number of sectors per IO command");
59
60 static int msix_disable;
61 module_param(msix_disable, int, 0444);
62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
63
64 static unsigned int msix_vectors;
65 module_param(msix_vectors, int, 0444);
66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
67
68 static int allow_vf_ioctls;
69 module_param(allow_vf_ioctls, int, 0444);
70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
71
72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
73 module_param(throttlequeuedepth, int, 0444);
74 MODULE_PARM_DESC(throttlequeuedepth,
75         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
76
77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
78 module_param(resetwaittime, int, 0444);
79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
80
81 static int smp_affinity_enable = 1;
82 module_param(smp_affinity_enable, int, 0444);
83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
84
85 static int rdpq_enable = 1;
86 module_param(rdpq_enable, int, 0444);
87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
88
89 unsigned int dual_qdepth_disable;
90 module_param(dual_qdepth_disable, int, 0444);
91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
92
93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
94 module_param(scmd_timeout, int, 0444);
95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
96
97 int perf_mode = -1;
98 module_param(perf_mode, int, 0444);
99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
100                 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
101                 "interrupt coalescing is enabled only on high iops queues\n\t\t"
102                 "1 - iops: High iops queues are not allocated &\n\t\t"
103                 "interrupt coalescing is enabled on all queues\n\t\t"
104                 "2 - latency: High iops queues are not allocated &\n\t\t"
105                 "interrupt coalescing is disabled on all queues\n\t\t"
106                 "default mode is 'balanced'"
107                 );
108
109 int event_log_level = MFI_EVT_CLASS_CRITICAL;
110 module_param(event_log_level, int, 0644);
111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
112
113 unsigned int enable_sdev_max_qd;
114 module_param(enable_sdev_max_qd, int, 0444);
115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
116
117 int poll_queues;
118 module_param(poll_queues, int, 0444);
119 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
120                 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
121                 "It is not applicable for MFI_SERIES. &\n\t\t"
122                 "Driver will work in latency mode. &\n\t\t"
123                 "High iops queues are not allocated &\n\t\t"
124                 );
125
126 int host_tagset_enable = 1;
127 module_param(host_tagset_enable, int, 0444);
128 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
129
130 MODULE_LICENSE("GPL");
131 MODULE_VERSION(MEGASAS_VERSION);
132 MODULE_AUTHOR("[email protected]");
133 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
134
135 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
136 static int megasas_get_pd_list(struct megasas_instance *instance);
137 static int megasas_ld_list_query(struct megasas_instance *instance,
138                                  u8 query_type);
139 static int megasas_issue_init_mfi(struct megasas_instance *instance);
140 static int megasas_register_aen(struct megasas_instance *instance,
141                                 u32 seq_num, u32 class_locale_word);
142 static void megasas_get_pd_info(struct megasas_instance *instance,
143                                 struct scsi_device *sdev);
144 static void
145 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
146
147 /*
148  * PCI ID table for all supported controllers
149  */
150 static struct pci_device_id megasas_pci_table[] = {
151
152         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
153         /* xscale IOP */
154         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
155         /* ppc IOP */
156         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
157         /* ppc IOP */
158         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
159         /* gen2*/
160         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
161         /* gen2*/
162         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
163         /* skinny*/
164         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
165         /* skinny*/
166         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
167         /* xscale IOP, vega */
168         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
169         /* xscale IOP */
170         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
171         /* Fusion */
172         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
173         /* Plasma */
174         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
175         /* Invader */
176         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
177         /* Fury */
178         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
179         /* Intruder */
180         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
181         /* Intruder 24 port*/
182         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
183         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
184         /* VENTURA */
185         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
186         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
187         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
188         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
189         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
190         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
191         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
192         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
193         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
194         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
195         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
196         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
197         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
198         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
199         {}
200 };
201
202 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
203
204 static int megasas_mgmt_majorno;
205 struct megasas_mgmt_info megasas_mgmt_info;
206 static struct fasync_struct *megasas_async_queue;
207 static DEFINE_MUTEX(megasas_async_queue_mutex);
208
209 static int megasas_poll_wait_aen;
210 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
211 static u32 support_poll_for_event;
212 u32 megasas_dbg_lvl;
213 static u32 support_device_change;
214 static bool support_nvme_encapsulation;
215 static bool support_pci_lane_margining;
216
217 /* define lock for aen poll */
218 static DEFINE_SPINLOCK(poll_aen_lock);
219
220 extern struct dentry *megasas_debugfs_root;
221 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
222
223 void
224 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
225                      u8 alt_status);
226 static u32
227 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
228 static int
229 megasas_adp_reset_gen2(struct megasas_instance *instance,
230                        struct megasas_register_set __iomem *reg_set);
231 static irqreturn_t megasas_isr(int irq, void *devp);
232 static u32
233 megasas_init_adapter_mfi(struct megasas_instance *instance);
234 u32
235 megasas_build_and_issue_cmd(struct megasas_instance *instance,
236                             struct scsi_cmnd *scmd);
237 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
238 int
239 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
240         int seconds);
241 void megasas_fusion_ocr_wq(struct work_struct *work);
242 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
243                                          int initial);
244 static int
245 megasas_set_dma_mask(struct megasas_instance *instance);
246 static int
247 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
248 static inline void
249 megasas_free_ctrl_mem(struct megasas_instance *instance);
250 static inline int
251 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
252 static inline void
253 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
254 static inline void
255 megasas_init_ctrl_params(struct megasas_instance *instance);
256
257 u32 megasas_readl(struct megasas_instance *instance,
258                   const volatile void __iomem *addr)
259 {
260         u32 i = 0, ret_val;
261         /*
262          * Due to a HW errata in Aero controllers, reads to certain
263          * Fusion registers could intermittently return all zeroes.
264          * This behavior is transient in nature and subsequent reads will
265          * return valid value. As a workaround in driver, retry readl for
266          * upto three times until a non-zero value is read.
267          */
268         if (instance->adapter_type == AERO_SERIES) {
269                 do {
270                         ret_val = readl(addr);
271                         i++;
272                 } while (ret_val == 0 && i < 3);
273                 return ret_val;
274         } else {
275                 return readl(addr);
276         }
277 }
278
279 /**
280  * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
281  * @instance:                   Adapter soft state
282  * @dcmd:                       DCMD frame inside MFI command
283  * @dma_addr:                   DMA address of buffer to be passed to FW
284  * @dma_len:                    Length of DMA buffer to be passed to FW
285  * @return:                     void
286  */
287 void megasas_set_dma_settings(struct megasas_instance *instance,
288                               struct megasas_dcmd_frame *dcmd,
289                               dma_addr_t dma_addr, u32 dma_len)
290 {
291         if (instance->consistent_mask_64bit) {
292                 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
293                 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
294                 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
295
296         } else {
297                 dcmd->sgl.sge32[0].phys_addr =
298                                 cpu_to_le32(lower_32_bits(dma_addr));
299                 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
300                 dcmd->flags = cpu_to_le16(dcmd->flags);
301         }
302 }
303
304 static void
305 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
306 {
307         instance->instancet->fire_cmd(instance,
308                 cmd->frame_phys_addr, 0, instance->reg_set);
309         return;
310 }
311
312 /**
313  * megasas_get_cmd -    Get a command from the free pool
314  * @instance:           Adapter soft state
315  *
316  * Returns a free command from the pool
317  */
318 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
319                                                   *instance)
320 {
321         unsigned long flags;
322         struct megasas_cmd *cmd = NULL;
323
324         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
325
326         if (!list_empty(&instance->cmd_pool)) {
327                 cmd = list_entry((&instance->cmd_pool)->next,
328                                  struct megasas_cmd, list);
329                 list_del_init(&cmd->list);
330         } else {
331                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
332         }
333
334         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
335         return cmd;
336 }
337
338 /**
339  * megasas_return_cmd - Return a cmd to free command pool
340  * @instance:           Adapter soft state
341  * @cmd:                Command packet to be returned to free command pool
342  */
343 void
344 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
345 {
346         unsigned long flags;
347         u32 blk_tags;
348         struct megasas_cmd_fusion *cmd_fusion;
349         struct fusion_context *fusion = instance->ctrl_context;
350
351         /* This flag is used only for fusion adapter.
352          * Wait for Interrupt for Polled mode DCMD
353          */
354         if (cmd->flags & DRV_DCMD_POLLED_MODE)
355                 return;
356
357         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
358
359         if (fusion) {
360                 blk_tags = instance->max_scsi_cmds + cmd->index;
361                 cmd_fusion = fusion->cmd_list[blk_tags];
362                 megasas_return_cmd_fusion(instance, cmd_fusion);
363         }
364         cmd->scmd = NULL;
365         cmd->frame_count = 0;
366         cmd->flags = 0;
367         memset(cmd->frame, 0, instance->mfi_frame_size);
368         cmd->frame->io.context = cpu_to_le32(cmd->index);
369         if (!fusion && reset_devices)
370                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
371         list_add(&cmd->list, (&instance->cmd_pool)->next);
372
373         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
374
375 }
376
377 static const char *
378 format_timestamp(uint32_t timestamp)
379 {
380         static char buffer[32];
381
382         if ((timestamp & 0xff000000) == 0xff000000)
383                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
384                 0x00ffffff);
385         else
386                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
387         return buffer;
388 }
389
390 static const char *
391 format_class(int8_t class)
392 {
393         static char buffer[6];
394
395         switch (class) {
396         case MFI_EVT_CLASS_DEBUG:
397                 return "debug";
398         case MFI_EVT_CLASS_PROGRESS:
399                 return "progress";
400         case MFI_EVT_CLASS_INFO:
401                 return "info";
402         case MFI_EVT_CLASS_WARNING:
403                 return "WARN";
404         case MFI_EVT_CLASS_CRITICAL:
405                 return "CRIT";
406         case MFI_EVT_CLASS_FATAL:
407                 return "FATAL";
408         case MFI_EVT_CLASS_DEAD:
409                 return "DEAD";
410         default:
411                 snprintf(buffer, sizeof(buffer), "%d", class);
412                 return buffer;
413         }
414 }
415
416 /**
417   * megasas_decode_evt: Decode FW AEN event and print critical event
418   * for information.
419   * @instance:                  Adapter soft state
420   */
421 static void
422 megasas_decode_evt(struct megasas_instance *instance)
423 {
424         struct megasas_evt_detail *evt_detail = instance->evt_detail;
425         union megasas_evt_class_locale class_locale;
426         class_locale.word = le32_to_cpu(evt_detail->cl.word);
427
428         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
429             (event_log_level > MFI_EVT_CLASS_DEAD)) {
430                 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
431                 event_log_level = MFI_EVT_CLASS_CRITICAL;
432         }
433
434         if (class_locale.members.class >= event_log_level)
435                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
436                         le32_to_cpu(evt_detail->seq_num),
437                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
438                         (class_locale.members.locale),
439                         format_class(class_locale.members.class),
440                         evt_detail->description);
441
442         if (megasas_dbg_lvl & LD_PD_DEBUG)
443                 dev_info(&instance->pdev->dev,
444                          "evt_detail.args.ld.target_id/index %d/%d\n",
445                          evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
446
447 }
448
449 /*
450  * The following functions are defined for xscale
451  * (deviceid : 1064R, PERC5) controllers
452  */
453
454 /**
455  * megasas_enable_intr_xscale - Enables interrupts
456  * @instance:   Adapter soft state
457  */
458 static inline void
459 megasas_enable_intr_xscale(struct megasas_instance *instance)
460 {
461         struct megasas_register_set __iomem *regs;
462
463         regs = instance->reg_set;
464         writel(0, &(regs)->outbound_intr_mask);
465
466         /* Dummy readl to force pci flush */
467         readl(&regs->outbound_intr_mask);
468 }
469
470 /**
471  * megasas_disable_intr_xscale -Disables interrupt
472  * @instance:   Adapter soft state
473  */
474 static inline void
475 megasas_disable_intr_xscale(struct megasas_instance *instance)
476 {
477         struct megasas_register_set __iomem *regs;
478         u32 mask = 0x1f;
479
480         regs = instance->reg_set;
481         writel(mask, &regs->outbound_intr_mask);
482         /* Dummy readl to force pci flush */
483         readl(&regs->outbound_intr_mask);
484 }
485
486 /**
487  * megasas_read_fw_status_reg_xscale - returns the current FW status value
488  * @instance:   Adapter soft state
489  */
490 static u32
491 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
492 {
493         return readl(&instance->reg_set->outbound_msg_0);
494 }
495 /**
496  * megasas_clear_intr_xscale -  Check & clear interrupt
497  * @instance:   Adapter soft state
498  */
499 static int
500 megasas_clear_intr_xscale(struct megasas_instance *instance)
501 {
502         u32 status;
503         u32 mfiStatus = 0;
504         struct megasas_register_set __iomem *regs;
505         regs = instance->reg_set;
506
507         /*
508          * Check if it is our interrupt
509          */
510         status = readl(&regs->outbound_intr_status);
511
512         if (status & MFI_OB_INTR_STATUS_MASK)
513                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
514         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
515                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
516
517         /*
518          * Clear the interrupt by writing back the same value
519          */
520         if (mfiStatus)
521                 writel(status, &regs->outbound_intr_status);
522
523         /* Dummy readl to force pci flush */
524         readl(&regs->outbound_intr_status);
525
526         return mfiStatus;
527 }
528
529 /**
530  * megasas_fire_cmd_xscale -    Sends command to the FW
531  * @instance:           Adapter soft state
532  * @frame_phys_addr :   Physical address of cmd
533  * @frame_count :       Number of frames for the command
534  * @regs :              MFI register set
535  */
536 static inline void
537 megasas_fire_cmd_xscale(struct megasas_instance *instance,
538                 dma_addr_t frame_phys_addr,
539                 u32 frame_count,
540                 struct megasas_register_set __iomem *regs)
541 {
542         unsigned long flags;
543
544         spin_lock_irqsave(&instance->hba_lock, flags);
545         writel((frame_phys_addr >> 3)|(frame_count),
546                &(regs)->inbound_queue_port);
547         spin_unlock_irqrestore(&instance->hba_lock, flags);
548 }
549
550 /**
551  * megasas_adp_reset_xscale -  For controller reset
552  * @instance:   Adapter soft state
553  * @regs:       MFI register set
554  */
555 static int
556 megasas_adp_reset_xscale(struct megasas_instance *instance,
557         struct megasas_register_set __iomem *regs)
558 {
559         u32 i;
560         u32 pcidata;
561
562         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
563
564         for (i = 0; i < 3; i++)
565                 msleep(1000); /* sleep for 3 secs */
566         pcidata  = 0;
567         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
568         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
569         if (pcidata & 0x2) {
570                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
571                 pcidata &= ~0x2;
572                 pci_write_config_dword(instance->pdev,
573                                 MFI_1068_PCSR_OFFSET, pcidata);
574
575                 for (i = 0; i < 2; i++)
576                         msleep(1000); /* need to wait 2 secs again */
577
578                 pcidata  = 0;
579                 pci_read_config_dword(instance->pdev,
580                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
581                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
582                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
583                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
584                         pcidata = 0;
585                         pci_write_config_dword(instance->pdev,
586                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
587                 }
588         }
589         return 0;
590 }
591
592 /**
593  * megasas_check_reset_xscale - For controller reset check
594  * @instance:   Adapter soft state
595  * @regs:       MFI register set
596  */
597 static int
598 megasas_check_reset_xscale(struct megasas_instance *instance,
599                 struct megasas_register_set __iomem *regs)
600 {
601         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
602             (le32_to_cpu(*instance->consumer) ==
603                 MEGASAS_ADPRESET_INPROG_SIGN))
604                 return 1;
605         return 0;
606 }
607
608 static struct megasas_instance_template megasas_instance_template_xscale = {
609
610         .fire_cmd = megasas_fire_cmd_xscale,
611         .enable_intr = megasas_enable_intr_xscale,
612         .disable_intr = megasas_disable_intr_xscale,
613         .clear_intr = megasas_clear_intr_xscale,
614         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
615         .adp_reset = megasas_adp_reset_xscale,
616         .check_reset = megasas_check_reset_xscale,
617         .service_isr = megasas_isr,
618         .tasklet = megasas_complete_cmd_dpc,
619         .init_adapter = megasas_init_adapter_mfi,
620         .build_and_issue_cmd = megasas_build_and_issue_cmd,
621         .issue_dcmd = megasas_issue_dcmd,
622 };
623
624 /*
625  * This is the end of set of functions & definitions specific
626  * to xscale (deviceid : 1064R, PERC5) controllers
627  */
628
629 /*
630  * The following functions are defined for ppc (deviceid : 0x60)
631  * controllers
632  */
633
634 /**
635  * megasas_enable_intr_ppc -    Enables interrupts
636  * @instance:   Adapter soft state
637  */
638 static inline void
639 megasas_enable_intr_ppc(struct megasas_instance *instance)
640 {
641         struct megasas_register_set __iomem *regs;
642
643         regs = instance->reg_set;
644         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
645
646         writel(~0x80000000, &(regs)->outbound_intr_mask);
647
648         /* Dummy readl to force pci flush */
649         readl(&regs->outbound_intr_mask);
650 }
651
652 /**
653  * megasas_disable_intr_ppc -   Disable interrupt
654  * @instance:   Adapter soft state
655  */
656 static inline void
657 megasas_disable_intr_ppc(struct megasas_instance *instance)
658 {
659         struct megasas_register_set __iomem *regs;
660         u32 mask = 0xFFFFFFFF;
661
662         regs = instance->reg_set;
663         writel(mask, &regs->outbound_intr_mask);
664         /* Dummy readl to force pci flush */
665         readl(&regs->outbound_intr_mask);
666 }
667
668 /**
669  * megasas_read_fw_status_reg_ppc - returns the current FW status value
670  * @instance:   Adapter soft state
671  */
672 static u32
673 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
674 {
675         return readl(&instance->reg_set->outbound_scratch_pad_0);
676 }
677
678 /**
679  * megasas_clear_intr_ppc -     Check & clear interrupt
680  * @instance:   Adapter soft state
681  */
682 static int
683 megasas_clear_intr_ppc(struct megasas_instance *instance)
684 {
685         u32 status, mfiStatus = 0;
686         struct megasas_register_set __iomem *regs;
687         regs = instance->reg_set;
688
689         /*
690          * Check if it is our interrupt
691          */
692         status = readl(&regs->outbound_intr_status);
693
694         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
695                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
696
697         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
698                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
699
700         /*
701          * Clear the interrupt by writing back the same value
702          */
703         writel(status, &regs->outbound_doorbell_clear);
704
705         /* Dummy readl to force pci flush */
706         readl(&regs->outbound_doorbell_clear);
707
708         return mfiStatus;
709 }
710
711 /**
712  * megasas_fire_cmd_ppc -       Sends command to the FW
713  * @instance:           Adapter soft state
714  * @frame_phys_addr:    Physical address of cmd
715  * @frame_count:        Number of frames for the command
716  * @regs:               MFI register set
717  */
718 static inline void
719 megasas_fire_cmd_ppc(struct megasas_instance *instance,
720                 dma_addr_t frame_phys_addr,
721                 u32 frame_count,
722                 struct megasas_register_set __iomem *regs)
723 {
724         unsigned long flags;
725
726         spin_lock_irqsave(&instance->hba_lock, flags);
727         writel((frame_phys_addr | (frame_count<<1))|1,
728                         &(regs)->inbound_queue_port);
729         spin_unlock_irqrestore(&instance->hba_lock, flags);
730 }
731
732 /**
733  * megasas_check_reset_ppc -    For controller reset check
734  * @instance:   Adapter soft state
735  * @regs:       MFI register set
736  */
737 static int
738 megasas_check_reset_ppc(struct megasas_instance *instance,
739                         struct megasas_register_set __iomem *regs)
740 {
741         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
742                 return 1;
743
744         return 0;
745 }
746
747 static struct megasas_instance_template megasas_instance_template_ppc = {
748
749         .fire_cmd = megasas_fire_cmd_ppc,
750         .enable_intr = megasas_enable_intr_ppc,
751         .disable_intr = megasas_disable_intr_ppc,
752         .clear_intr = megasas_clear_intr_ppc,
753         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
754         .adp_reset = megasas_adp_reset_xscale,
755         .check_reset = megasas_check_reset_ppc,
756         .service_isr = megasas_isr,
757         .tasklet = megasas_complete_cmd_dpc,
758         .init_adapter = megasas_init_adapter_mfi,
759         .build_and_issue_cmd = megasas_build_and_issue_cmd,
760         .issue_dcmd = megasas_issue_dcmd,
761 };
762
763 /**
764  * megasas_enable_intr_skinny - Enables interrupts
765  * @instance:   Adapter soft state
766  */
767 static inline void
768 megasas_enable_intr_skinny(struct megasas_instance *instance)
769 {
770         struct megasas_register_set __iomem *regs;
771
772         regs = instance->reg_set;
773         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
774
775         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
776
777         /* Dummy readl to force pci flush */
778         readl(&regs->outbound_intr_mask);
779 }
780
781 /**
782  * megasas_disable_intr_skinny -        Disables interrupt
783  * @instance:   Adapter soft state
784  */
785 static inline void
786 megasas_disable_intr_skinny(struct megasas_instance *instance)
787 {
788         struct megasas_register_set __iomem *regs;
789         u32 mask = 0xFFFFFFFF;
790
791         regs = instance->reg_set;
792         writel(mask, &regs->outbound_intr_mask);
793         /* Dummy readl to force pci flush */
794         readl(&regs->outbound_intr_mask);
795 }
796
797 /**
798  * megasas_read_fw_status_reg_skinny - returns the current FW status value
799  * @instance:   Adapter soft state
800  */
801 static u32
802 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
803 {
804         return readl(&instance->reg_set->outbound_scratch_pad_0);
805 }
806
807 /**
808  * megasas_clear_intr_skinny -  Check & clear interrupt
809  * @instance:   Adapter soft state
810  */
811 static int
812 megasas_clear_intr_skinny(struct megasas_instance *instance)
813 {
814         u32 status;
815         u32 mfiStatus = 0;
816         struct megasas_register_set __iomem *regs;
817         regs = instance->reg_set;
818
819         /*
820          * Check if it is our interrupt
821          */
822         status = readl(&regs->outbound_intr_status);
823
824         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
825                 return 0;
826         }
827
828         /*
829          * Check if it is our interrupt
830          */
831         if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
832             MFI_STATE_FAULT) {
833                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
834         } else
835                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
836
837         /*
838          * Clear the interrupt by writing back the same value
839          */
840         writel(status, &regs->outbound_intr_status);
841
842         /*
843          * dummy read to flush PCI
844          */
845         readl(&regs->outbound_intr_status);
846
847         return mfiStatus;
848 }
849
850 /**
851  * megasas_fire_cmd_skinny -    Sends command to the FW
852  * @instance:           Adapter soft state
853  * @frame_phys_addr:    Physical address of cmd
854  * @frame_count:        Number of frames for the command
855  * @regs:               MFI register set
856  */
857 static inline void
858 megasas_fire_cmd_skinny(struct megasas_instance *instance,
859                         dma_addr_t frame_phys_addr,
860                         u32 frame_count,
861                         struct megasas_register_set __iomem *regs)
862 {
863         unsigned long flags;
864
865         spin_lock_irqsave(&instance->hba_lock, flags);
866         writel(upper_32_bits(frame_phys_addr),
867                &(regs)->inbound_high_queue_port);
868         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
869                &(regs)->inbound_low_queue_port);
870         spin_unlock_irqrestore(&instance->hba_lock, flags);
871 }
872
873 /**
874  * megasas_check_reset_skinny - For controller reset check
875  * @instance:   Adapter soft state
876  * @regs:       MFI register set
877  */
878 static int
879 megasas_check_reset_skinny(struct megasas_instance *instance,
880                                 struct megasas_register_set __iomem *regs)
881 {
882         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
883                 return 1;
884
885         return 0;
886 }
887
888 static struct megasas_instance_template megasas_instance_template_skinny = {
889
890         .fire_cmd = megasas_fire_cmd_skinny,
891         .enable_intr = megasas_enable_intr_skinny,
892         .disable_intr = megasas_disable_intr_skinny,
893         .clear_intr = megasas_clear_intr_skinny,
894         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
895         .adp_reset = megasas_adp_reset_gen2,
896         .check_reset = megasas_check_reset_skinny,
897         .service_isr = megasas_isr,
898         .tasklet = megasas_complete_cmd_dpc,
899         .init_adapter = megasas_init_adapter_mfi,
900         .build_and_issue_cmd = megasas_build_and_issue_cmd,
901         .issue_dcmd = megasas_issue_dcmd,
902 };
903
904
905 /*
906  * The following functions are defined for gen2 (deviceid : 0x78 0x79)
907  * controllers
908  */
909
910 /**
911  * megasas_enable_intr_gen2 -  Enables interrupts
912  * @instance:   Adapter soft state
913  */
914 static inline void
915 megasas_enable_intr_gen2(struct megasas_instance *instance)
916 {
917         struct megasas_register_set __iomem *regs;
918
919         regs = instance->reg_set;
920         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
921
922         /* write ~0x00000005 (4 & 1) to the intr mask*/
923         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
924
925         /* Dummy readl to force pci flush */
926         readl(&regs->outbound_intr_mask);
927 }
928
929 /**
930  * megasas_disable_intr_gen2 - Disables interrupt
931  * @instance:   Adapter soft state
932  */
933 static inline void
934 megasas_disable_intr_gen2(struct megasas_instance *instance)
935 {
936         struct megasas_register_set __iomem *regs;
937         u32 mask = 0xFFFFFFFF;
938
939         regs = instance->reg_set;
940         writel(mask, &regs->outbound_intr_mask);
941         /* Dummy readl to force pci flush */
942         readl(&regs->outbound_intr_mask);
943 }
944
945 /**
946  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
947  * @instance:   Adapter soft state
948  */
949 static u32
950 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
951 {
952         return readl(&instance->reg_set->outbound_scratch_pad_0);
953 }
954
955 /**
956  * megasas_clear_intr_gen2 -      Check & clear interrupt
957  * @instance:   Adapter soft state
958  */
959 static int
960 megasas_clear_intr_gen2(struct megasas_instance *instance)
961 {
962         u32 status;
963         u32 mfiStatus = 0;
964         struct megasas_register_set __iomem *regs;
965         regs = instance->reg_set;
966
967         /*
968          * Check if it is our interrupt
969          */
970         status = readl(&regs->outbound_intr_status);
971
972         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
973                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
974         }
975         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
976                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
977         }
978
979         /*
980          * Clear the interrupt by writing back the same value
981          */
982         if (mfiStatus)
983                 writel(status, &regs->outbound_doorbell_clear);
984
985         /* Dummy readl to force pci flush */
986         readl(&regs->outbound_intr_status);
987
988         return mfiStatus;
989 }
990
991 /**
992  * megasas_fire_cmd_gen2 -     Sends command to the FW
993  * @instance:           Adapter soft state
994  * @frame_phys_addr:    Physical address of cmd
995  * @frame_count:        Number of frames for the command
996  * @regs:               MFI register set
997  */
998 static inline void
999 megasas_fire_cmd_gen2(struct megasas_instance *instance,
1000                         dma_addr_t frame_phys_addr,
1001                         u32 frame_count,
1002                         struct megasas_register_set __iomem *regs)
1003 {
1004         unsigned long flags;
1005
1006         spin_lock_irqsave(&instance->hba_lock, flags);
1007         writel((frame_phys_addr | (frame_count<<1))|1,
1008                         &(regs)->inbound_queue_port);
1009         spin_unlock_irqrestore(&instance->hba_lock, flags);
1010 }
1011
1012 /**
1013  * megasas_adp_reset_gen2 -     For controller reset
1014  * @instance:   Adapter soft state
1015  * @reg_set:    MFI register set
1016  */
1017 static int
1018 megasas_adp_reset_gen2(struct megasas_instance *instance,
1019                         struct megasas_register_set __iomem *reg_set)
1020 {
1021         u32 retry = 0 ;
1022         u32 HostDiag;
1023         u32 __iomem *seq_offset = &reg_set->seq_offset;
1024         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
1025
1026         if (instance->instancet == &megasas_instance_template_skinny) {
1027                 seq_offset = &reg_set->fusion_seq_offset;
1028                 hostdiag_offset = &reg_set->fusion_host_diag;
1029         }
1030
1031         writel(0, seq_offset);
1032         writel(4, seq_offset);
1033         writel(0xb, seq_offset);
1034         writel(2, seq_offset);
1035         writel(7, seq_offset);
1036         writel(0xd, seq_offset);
1037
1038         msleep(1000);
1039
1040         HostDiag = (u32)readl(hostdiag_offset);
1041
1042         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1043                 msleep(100);
1044                 HostDiag = (u32)readl(hostdiag_offset);
1045                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1046                                         retry, HostDiag);
1047
1048                 if (retry++ >= 100)
1049                         return 1;
1050
1051         }
1052
1053         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1054
1055         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1056
1057         ssleep(10);
1058
1059         HostDiag = (u32)readl(hostdiag_offset);
1060         while (HostDiag & DIAG_RESET_ADAPTER) {
1061                 msleep(100);
1062                 HostDiag = (u32)readl(hostdiag_offset);
1063                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1064                                 retry, HostDiag);
1065
1066                 if (retry++ >= 1000)
1067                         return 1;
1068
1069         }
1070         return 0;
1071 }
1072
1073 /**
1074  * megasas_check_reset_gen2 -   For controller reset check
1075  * @instance:   Adapter soft state
1076  * @regs:       MFI register set
1077  */
1078 static int
1079 megasas_check_reset_gen2(struct megasas_instance *instance,
1080                 struct megasas_register_set __iomem *regs)
1081 {
1082         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1083                 return 1;
1084
1085         return 0;
1086 }
1087
1088 static struct megasas_instance_template megasas_instance_template_gen2 = {
1089
1090         .fire_cmd = megasas_fire_cmd_gen2,
1091         .enable_intr = megasas_enable_intr_gen2,
1092         .disable_intr = megasas_disable_intr_gen2,
1093         .clear_intr = megasas_clear_intr_gen2,
1094         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1095         .adp_reset = megasas_adp_reset_gen2,
1096         .check_reset = megasas_check_reset_gen2,
1097         .service_isr = megasas_isr,
1098         .tasklet = megasas_complete_cmd_dpc,
1099         .init_adapter = megasas_init_adapter_mfi,
1100         .build_and_issue_cmd = megasas_build_and_issue_cmd,
1101         .issue_dcmd = megasas_issue_dcmd,
1102 };
1103
1104 /*
1105  * This is the end of set of functions & definitions
1106  * specific to gen2 (deviceid : 0x78, 0x79) controllers
1107  */
1108
1109 /*
1110  * Template added for TB (Fusion)
1111  */
1112 extern struct megasas_instance_template megasas_instance_template_fusion;
1113
1114 /**
1115  * megasas_issue_polled -       Issues a polling command
1116  * @instance:                   Adapter soft state
1117  * @cmd:                        Command packet to be issued
1118  *
1119  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1120  */
1121 int
1122 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1123 {
1124         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1125
1126         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1127         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1128
1129         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1130                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1131                         __func__, __LINE__);
1132                 return DCMD_INIT;
1133         }
1134
1135         instance->instancet->issue_dcmd(instance, cmd);
1136
1137         return wait_and_poll(instance, cmd, instance->requestorId ?
1138                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1139 }
1140
1141 /**
1142  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1143  * @instance:                   Adapter soft state
1144  * @cmd:                        Command to be issued
1145  * @timeout:                    Timeout in seconds
1146  *
1147  * This function waits on an event for the command to be returned from ISR.
1148  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1149  * Used to issue ioctl commands.
1150  */
1151 int
1152 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1153                           struct megasas_cmd *cmd, int timeout)
1154 {
1155         int ret = 0;
1156         cmd->cmd_status_drv = DCMD_INIT;
1157
1158         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1159                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1160                         __func__, __LINE__);
1161                 return DCMD_INIT;
1162         }
1163
1164         instance->instancet->issue_dcmd(instance, cmd);
1165
1166         if (timeout) {
1167                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1168                 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1169                 if (!ret) {
1170                         dev_err(&instance->pdev->dev,
1171                                 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1172                                 cmd->frame->dcmd.opcode, __func__);
1173                         return DCMD_TIMEOUT;
1174                 }
1175         } else
1176                 wait_event(instance->int_cmd_wait_q,
1177                                 cmd->cmd_status_drv != DCMD_INIT);
1178
1179         return cmd->cmd_status_drv;
1180 }
1181
1182 /**
1183  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1184  * @instance:                           Adapter soft state
1185  * @cmd_to_abort:                       Previously issued cmd to be aborted
1186  * @timeout:                            Timeout in seconds
1187  *
1188  * MFI firmware can abort previously issued AEN comamnd (automatic event
1189  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1190  * cmd and waits for return status.
1191  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1192  */
1193 static int
1194 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1195                                 struct megasas_cmd *cmd_to_abort, int timeout)
1196 {
1197         struct megasas_cmd *cmd;
1198         struct megasas_abort_frame *abort_fr;
1199         int ret = 0;
1200         u32 opcode;
1201
1202         cmd = megasas_get_cmd(instance);
1203
1204         if (!cmd)
1205                 return -1;
1206
1207         abort_fr = &cmd->frame->abort;
1208
1209         /*
1210          * Prepare and issue the abort frame
1211          */
1212         abort_fr->cmd = MFI_CMD_ABORT;
1213         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1214         abort_fr->flags = cpu_to_le16(0);
1215         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1216         abort_fr->abort_mfi_phys_addr_lo =
1217                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1218         abort_fr->abort_mfi_phys_addr_hi =
1219                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1220
1221         cmd->sync_cmd = 1;
1222         cmd->cmd_status_drv = DCMD_INIT;
1223
1224         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1225                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1226                         __func__, __LINE__);
1227                 return DCMD_INIT;
1228         }
1229
1230         instance->instancet->issue_dcmd(instance, cmd);
1231
1232         if (timeout) {
1233                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1234                 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1235                 if (!ret) {
1236                         opcode = cmd_to_abort->frame->dcmd.opcode;
1237                         dev_err(&instance->pdev->dev,
1238                                 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1239                                 opcode,  __func__);
1240                         return DCMD_TIMEOUT;
1241                 }
1242         } else
1243                 wait_event(instance->abort_cmd_wait_q,
1244                 cmd->cmd_status_drv != DCMD_INIT);
1245
1246         cmd->sync_cmd = 0;
1247
1248         megasas_return_cmd(instance, cmd);
1249         return cmd->cmd_status_drv;
1250 }
1251
1252 /**
1253  * megasas_make_sgl32 - Prepares 32-bit SGL
1254  * @instance:           Adapter soft state
1255  * @scp:                SCSI command from the mid-layer
1256  * @mfi_sgl:            SGL to be filled in
1257  *
1258  * If successful, this function returns the number of SG elements. Otherwise,
1259  * it returnes -1.
1260  */
1261 static int
1262 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1263                    union megasas_sgl *mfi_sgl)
1264 {
1265         int i;
1266         int sge_count;
1267         struct scatterlist *os_sgl;
1268
1269         sge_count = scsi_dma_map(scp);
1270         BUG_ON(sge_count < 0);
1271
1272         if (sge_count) {
1273                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1274                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1275                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1276                 }
1277         }
1278         return sge_count;
1279 }
1280
1281 /**
1282  * megasas_make_sgl64 - Prepares 64-bit SGL
1283  * @instance:           Adapter soft state
1284  * @scp:                SCSI command from the mid-layer
1285  * @mfi_sgl:            SGL to be filled in
1286  *
1287  * If successful, this function returns the number of SG elements. Otherwise,
1288  * it returnes -1.
1289  */
1290 static int
1291 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1292                    union megasas_sgl *mfi_sgl)
1293 {
1294         int i;
1295         int sge_count;
1296         struct scatterlist *os_sgl;
1297
1298         sge_count = scsi_dma_map(scp);
1299         BUG_ON(sge_count < 0);
1300
1301         if (sge_count) {
1302                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1304                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1305                 }
1306         }
1307         return sge_count;
1308 }
1309
1310 /**
1311  * megasas_make_sgl_skinny - Prepares IEEE SGL
1312  * @instance:           Adapter soft state
1313  * @scp:                SCSI command from the mid-layer
1314  * @mfi_sgl:            SGL to be filled in
1315  *
1316  * If successful, this function returns the number of SG elements. Otherwise,
1317  * it returnes -1.
1318  */
1319 static int
1320 megasas_make_sgl_skinny(struct megasas_instance *instance,
1321                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1322 {
1323         int i;
1324         int sge_count;
1325         struct scatterlist *os_sgl;
1326
1327         sge_count = scsi_dma_map(scp);
1328
1329         if (sge_count) {
1330                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1331                         mfi_sgl->sge_skinny[i].length =
1332                                 cpu_to_le32(sg_dma_len(os_sgl));
1333                         mfi_sgl->sge_skinny[i].phys_addr =
1334                                 cpu_to_le64(sg_dma_address(os_sgl));
1335                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1336                 }
1337         }
1338         return sge_count;
1339 }
1340
1341  /**
1342  * megasas_get_frame_count - Computes the number of frames
1343  * @frame_type          : type of frame- io or pthru frame
1344  * @sge_count           : number of sg elements
1345  *
1346  * Returns the number of frames required for numnber of sge's (sge_count)
1347  */
1348
1349 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1350                         u8 sge_count, u8 frame_type)
1351 {
1352         int num_cnt;
1353         int sge_bytes;
1354         u32 sge_sz;
1355         u32 frame_count = 0;
1356
1357         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1358             sizeof(struct megasas_sge32);
1359
1360         if (instance->flag_ieee) {
1361                 sge_sz = sizeof(struct megasas_sge_skinny);
1362         }
1363
1364         /*
1365          * Main frame can contain 2 SGEs for 64-bit SGLs and
1366          * 3 SGEs for 32-bit SGLs for ldio &
1367          * 1 SGEs for 64-bit SGLs and
1368          * 2 SGEs for 32-bit SGLs for pthru frame
1369          */
1370         if (unlikely(frame_type == PTHRU_FRAME)) {
1371                 if (instance->flag_ieee == 1) {
1372                         num_cnt = sge_count - 1;
1373                 } else if (IS_DMA64)
1374                         num_cnt = sge_count - 1;
1375                 else
1376                         num_cnt = sge_count - 2;
1377         } else {
1378                 if (instance->flag_ieee == 1) {
1379                         num_cnt = sge_count - 1;
1380                 } else if (IS_DMA64)
1381                         num_cnt = sge_count - 2;
1382                 else
1383                         num_cnt = sge_count - 3;
1384         }
1385
1386         if (num_cnt > 0) {
1387                 sge_bytes = sge_sz * num_cnt;
1388
1389                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1390                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1391         }
1392         /* Main frame */
1393         frame_count += 1;
1394
1395         if (frame_count > 7)
1396                 frame_count = 8;
1397         return frame_count;
1398 }
1399
1400 /**
1401  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1402  * @instance:           Adapter soft state
1403  * @scp:                SCSI command
1404  * @cmd:                Command to be prepared in
1405  *
1406  * This function prepares CDB commands. These are typcially pass-through
1407  * commands to the devices.
1408  */
1409 static int
1410 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1411                    struct megasas_cmd *cmd)
1412 {
1413         u32 is_logical;
1414         u32 device_id;
1415         u16 flags = 0;
1416         struct megasas_pthru_frame *pthru;
1417
1418         is_logical = MEGASAS_IS_LOGICAL(scp->device);
1419         device_id = MEGASAS_DEV_INDEX(scp);
1420         pthru = (struct megasas_pthru_frame *)cmd->frame;
1421
1422         if (scp->sc_data_direction == DMA_TO_DEVICE)
1423                 flags = MFI_FRAME_DIR_WRITE;
1424         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1425                 flags = MFI_FRAME_DIR_READ;
1426         else if (scp->sc_data_direction == DMA_NONE)
1427                 flags = MFI_FRAME_DIR_NONE;
1428
1429         if (instance->flag_ieee == 1) {
1430                 flags |= MFI_FRAME_IEEE;
1431         }
1432
1433         /*
1434          * Prepare the DCDB frame
1435          */
1436         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1437         pthru->cmd_status = 0x0;
1438         pthru->scsi_status = 0x0;
1439         pthru->target_id = device_id;
1440         pthru->lun = scp->device->lun;
1441         pthru->cdb_len = scp->cmd_len;
1442         pthru->timeout = 0;
1443         pthru->pad_0 = 0;
1444         pthru->flags = cpu_to_le16(flags);
1445         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1446
1447         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1448
1449         /*
1450          * If the command is for the tape device, set the
1451          * pthru timeout to the os layer timeout value.
1452          */
1453         if (scp->device->type == TYPE_TAPE) {
1454                 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1455                         pthru->timeout = cpu_to_le16(0xFFFF);
1456                 else
1457                         pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1458         }
1459
1460         /*
1461          * Construct SGL
1462          */
1463         if (instance->flag_ieee == 1) {
1464                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1465                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1466                                                       &pthru->sgl);
1467         } else if (IS_DMA64) {
1468                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1469                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1470                                                       &pthru->sgl);
1471         } else
1472                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1473                                                       &pthru->sgl);
1474
1475         if (pthru->sge_count > instance->max_num_sge) {
1476                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1477                         pthru->sge_count);
1478                 return 0;
1479         }
1480
1481         /*
1482          * Sense info specific
1483          */
1484         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1485         pthru->sense_buf_phys_addr_hi =
1486                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1487         pthru->sense_buf_phys_addr_lo =
1488                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1489
1490         /*
1491          * Compute the total number of frames this command consumes. FW uses
1492          * this number to pull sufficient number of frames from host memory.
1493          */
1494         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1495                                                         PTHRU_FRAME);
1496
1497         return cmd->frame_count;
1498 }
1499
1500 /**
1501  * megasas_build_ldio - Prepares IOs to logical devices
1502  * @instance:           Adapter soft state
1503  * @scp:                SCSI command
1504  * @cmd:                Command to be prepared
1505  *
1506  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1507  */
1508 static int
1509 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1510                    struct megasas_cmd *cmd)
1511 {
1512         u32 device_id;
1513         u8 sc = scp->cmnd[0];
1514         u16 flags = 0;
1515         struct megasas_io_frame *ldio;
1516
1517         device_id = MEGASAS_DEV_INDEX(scp);
1518         ldio = (struct megasas_io_frame *)cmd->frame;
1519
1520         if (scp->sc_data_direction == DMA_TO_DEVICE)
1521                 flags = MFI_FRAME_DIR_WRITE;
1522         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1523                 flags = MFI_FRAME_DIR_READ;
1524
1525         if (instance->flag_ieee == 1) {
1526                 flags |= MFI_FRAME_IEEE;
1527         }
1528
1529         /*
1530          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1531          */
1532         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1533         ldio->cmd_status = 0x0;
1534         ldio->scsi_status = 0x0;
1535         ldio->target_id = device_id;
1536         ldio->timeout = 0;
1537         ldio->reserved_0 = 0;
1538         ldio->pad_0 = 0;
1539         ldio->flags = cpu_to_le16(flags);
1540         ldio->start_lba_hi = 0;
1541         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1542
1543         /*
1544          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1545          */
1546         if (scp->cmd_len == 6) {
1547                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1548                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1549                                                  ((u32) scp->cmnd[2] << 8) |
1550                                                  (u32) scp->cmnd[3]);
1551
1552                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1553         }
1554
1555         /*
1556          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1557          */
1558         else if (scp->cmd_len == 10) {
1559                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1560                                               ((u32) scp->cmnd[7] << 8));
1561                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1562                                                  ((u32) scp->cmnd[3] << 16) |
1563                                                  ((u32) scp->cmnd[4] << 8) |
1564                                                  (u32) scp->cmnd[5]);
1565         }
1566
1567         /*
1568          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1569          */
1570         else if (scp->cmd_len == 12) {
1571                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1572                                               ((u32) scp->cmnd[7] << 16) |
1573                                               ((u32) scp->cmnd[8] << 8) |
1574                                               (u32) scp->cmnd[9]);
1575
1576                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1577                                                  ((u32) scp->cmnd[3] << 16) |
1578                                                  ((u32) scp->cmnd[4] << 8) |
1579                                                  (u32) scp->cmnd[5]);
1580         }
1581
1582         /*
1583          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1584          */
1585         else if (scp->cmd_len == 16) {
1586                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1587                                               ((u32) scp->cmnd[11] << 16) |
1588                                               ((u32) scp->cmnd[12] << 8) |
1589                                               (u32) scp->cmnd[13]);
1590
1591                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1592                                                  ((u32) scp->cmnd[7] << 16) |
1593                                                  ((u32) scp->cmnd[8] << 8) |
1594                                                  (u32) scp->cmnd[9]);
1595
1596                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1597                                                  ((u32) scp->cmnd[3] << 16) |
1598                                                  ((u32) scp->cmnd[4] << 8) |
1599                                                  (u32) scp->cmnd[5]);
1600
1601         }
1602
1603         /*
1604          * Construct SGL
1605          */
1606         if (instance->flag_ieee) {
1607                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1608                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1609                                               &ldio->sgl);
1610         } else if (IS_DMA64) {
1611                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1612                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1613         } else
1614                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1615
1616         if (ldio->sge_count > instance->max_num_sge) {
1617                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1618                         ldio->sge_count);
1619                 return 0;
1620         }
1621
1622         /*
1623          * Sense info specific
1624          */
1625         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1626         ldio->sense_buf_phys_addr_hi = 0;
1627         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1628
1629         /*
1630          * Compute the total number of frames this command consumes. FW uses
1631          * this number to pull sufficient number of frames from host memory.
1632          */
1633         cmd->frame_count = megasas_get_frame_count(instance,
1634                         ldio->sge_count, IO_FRAME);
1635
1636         return cmd->frame_count;
1637 }
1638
1639 /**
1640  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1641  *                              and whether it's RW or non RW
1642  * @cmd:                        SCSI command
1643  *
1644  */
1645 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1646 {
1647         int ret;
1648
1649         switch (cmd->cmnd[0]) {
1650         case READ_10:
1651         case WRITE_10:
1652         case READ_12:
1653         case WRITE_12:
1654         case READ_6:
1655         case WRITE_6:
1656         case READ_16:
1657         case WRITE_16:
1658                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1659                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1660                 break;
1661         default:
1662                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1663                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1664         }
1665         return ret;
1666 }
1667
1668  /**
1669  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1670  *                                      in FW
1671  * @instance:                           Adapter soft state
1672  */
1673 static inline void
1674 megasas_dump_pending_frames(struct megasas_instance *instance)
1675 {
1676         struct megasas_cmd *cmd;
1677         int i,n;
1678         union megasas_sgl *mfi_sgl;
1679         struct megasas_io_frame *ldio;
1680         struct megasas_pthru_frame *pthru;
1681         u32 sgcount;
1682         u16 max_cmd = instance->max_fw_cmds;
1683
1684         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1685         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1686         if (IS_DMA64)
1687                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1688         else
1689                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1690
1691         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1692         for (i = 0; i < max_cmd; i++) {
1693                 cmd = instance->cmd_list[i];
1694                 if (!cmd->scmd)
1695                         continue;
1696                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1697                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1698                         ldio = (struct megasas_io_frame *)cmd->frame;
1699                         mfi_sgl = &ldio->sgl;
1700                         sgcount = ldio->sge_count;
1701                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1702                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1703                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1704                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1705                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1706                 } else {
1707                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1708                         mfi_sgl = &pthru->sgl;
1709                         sgcount = pthru->sge_count;
1710                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1711                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1712                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1713                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1714                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1715                 }
1716                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1717                         for (n = 0; n < sgcount; n++) {
1718                                 if (IS_DMA64)
1719                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1720                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1721                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1722                                 else
1723                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1724                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1725                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1726                         }
1727                 }
1728         } /*for max_cmd*/
1729         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1730         for (i = 0; i < max_cmd; i++) {
1731
1732                 cmd = instance->cmd_list[i];
1733
1734                 if (cmd->sync_cmd == 1)
1735                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1736         }
1737         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1738 }
1739
1740 u32
1741 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1742                             struct scsi_cmnd *scmd)
1743 {
1744         struct megasas_cmd *cmd;
1745         u32 frame_count;
1746
1747         cmd = megasas_get_cmd(instance);
1748         if (!cmd)
1749                 return SCSI_MLQUEUE_HOST_BUSY;
1750
1751         /*
1752          * Logical drive command
1753          */
1754         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1755                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1756         else
1757                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1758
1759         if (!frame_count)
1760                 goto out_return_cmd;
1761
1762         cmd->scmd = scmd;
1763         megasas_priv(scmd)->cmd_priv = cmd;
1764
1765         /*
1766          * Issue the command to the FW
1767          */
1768         atomic_inc(&instance->fw_outstanding);
1769
1770         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1771                                 cmd->frame_count-1, instance->reg_set);
1772
1773         return 0;
1774 out_return_cmd:
1775         megasas_return_cmd(instance, cmd);
1776         return SCSI_MLQUEUE_HOST_BUSY;
1777 }
1778
1779
1780 /**
1781  * megasas_queue_command -      Queue entry point
1782  * @shost:                      adapter SCSI host
1783  * @scmd:                       SCSI command to be queued
1784  */
1785 static int
1786 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1787 {
1788         struct megasas_instance *instance;
1789         struct MR_PRIV_DEVICE *mr_device_priv_data;
1790         u32 ld_tgt_id;
1791
1792         instance = (struct megasas_instance *)
1793             scmd->device->host->hostdata;
1794
1795         if (instance->unload == 1) {
1796                 scmd->result = DID_NO_CONNECT << 16;
1797                 scsi_done(scmd);
1798                 return 0;
1799         }
1800
1801         if (instance->issuepend_done == 0)
1802                 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804
1805         /* Check for an mpio path and adjust behavior */
1806         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1807                 if (megasas_check_mpio_paths(instance, scmd) ==
1808                     (DID_REQUEUE << 16)) {
1809                         return SCSI_MLQUEUE_HOST_BUSY;
1810                 } else {
1811                         scmd->result = DID_NO_CONNECT << 16;
1812                         scsi_done(scmd);
1813                         return 0;
1814                 }
1815         }
1816
1817         mr_device_priv_data = scmd->device->hostdata;
1818         if (!mr_device_priv_data ||
1819             (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1820                 scmd->result = DID_NO_CONNECT << 16;
1821                 scsi_done(scmd);
1822                 return 0;
1823         }
1824
1825         if (MEGASAS_IS_LOGICAL(scmd->device)) {
1826                 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1827                 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1828                         scmd->result = DID_NO_CONNECT << 16;
1829                         scsi_done(scmd);
1830                         return 0;
1831                 }
1832         }
1833
1834         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1835                 return SCSI_MLQUEUE_HOST_BUSY;
1836
1837         if (mr_device_priv_data->tm_busy)
1838                 return SCSI_MLQUEUE_DEVICE_BUSY;
1839
1840
1841         scmd->result = 0;
1842
1843         if (MEGASAS_IS_LOGICAL(scmd->device) &&
1844             (scmd->device->id >= instance->fw_supported_vd_count ||
1845                 scmd->device->lun)) {
1846                 scmd->result = DID_BAD_TARGET << 16;
1847                 goto out_done;
1848         }
1849
1850         if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1851             MEGASAS_IS_LOGICAL(scmd->device) &&
1852             (!instance->fw_sync_cache_support)) {
1853                 scmd->result = DID_OK << 16;
1854                 goto out_done;
1855         }
1856
1857         return instance->instancet->build_and_issue_cmd(instance, scmd);
1858
1859  out_done:
1860         scsi_done(scmd);
1861         return 0;
1862 }
1863
1864 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1865 {
1866         int i;
1867
1868         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1869
1870                 if ((megasas_mgmt_info.instance[i]) &&
1871                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1872                         return megasas_mgmt_info.instance[i];
1873         }
1874
1875         return NULL;
1876 }
1877
1878 /*
1879 * megasas_set_dynamic_target_properties -
1880 * Device property set by driver may not be static and it is required to be
1881 * updated after OCR
1882 *
1883 * set tm_capable.
1884 * set dma alignment (only for eedp protection enable vd).
1885 *
1886 * @sdev: OS provided scsi device
1887 *
1888 * Returns void
1889 */
1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1891                                            bool is_target_prop)
1892 {
1893         u16 pd_index = 0, ld;
1894         u32 device_id;
1895         struct megasas_instance *instance;
1896         struct fusion_context *fusion;
1897         struct MR_PRIV_DEVICE *mr_device_priv_data;
1898         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1899         struct MR_LD_RAID *raid;
1900         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1901
1902         instance = megasas_lookup_instance(sdev->host->host_no);
1903         fusion = instance->ctrl_context;
1904         mr_device_priv_data = sdev->hostdata;
1905
1906         if (!fusion || !mr_device_priv_data)
1907                 return;
1908
1909         if (MEGASAS_IS_LOGICAL(sdev)) {
1910                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1911                                         + sdev->id;
1912                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1913                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1914                 if (ld >= instance->fw_supported_vd_count)
1915                         return;
1916                 raid = MR_LdRaidGet(ld, local_map_ptr);
1917
1918                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1919                         blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1920
1921                 mr_device_priv_data->is_tm_capable =
1922                         raid->capability.tmCapable;
1923
1924                 if (!raid->flags.isEPD)
1925                         sdev->no_write_same = 1;
1926
1927         } else if (instance->use_seqnum_jbod_fp) {
1928                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1929                         sdev->id;
1930                 pd_sync = (void *)fusion->pd_seq_sync
1931                                 [(instance->pd_seq_map_id - 1) & 1];
1932                 mr_device_priv_data->is_tm_capable =
1933                         pd_sync->seq[pd_index].capability.tmCapable;
1934         }
1935
1936         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1937                 /*
1938                  * If FW provides a target reset timeout value, driver will use
1939                  * it. If not set, fallback to default values.
1940                  */
1941                 mr_device_priv_data->target_reset_tmo =
1942                         min_t(u8, instance->max_reset_tmo,
1943                               instance->tgt_prop->reset_tmo);
1944                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1945         } else {
1946                 mr_device_priv_data->target_reset_tmo =
1947                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1948                 mr_device_priv_data->task_abort_tmo =
1949                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1950         }
1951 }
1952
1953 /*
1954  * megasas_set_nvme_device_properties -
1955  * set nomerges=2
1956  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1957  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1958  *
1959  * MR firmware provides value in KB. Caller of this function converts
1960  * kb into bytes.
1961  *
1962  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1963  * MR firmware provides value 128 as (32 * 4K) = 128K.
1964  *
1965  * @sdev:                               scsi device
1966  * @max_io_size:                                maximum io transfer size
1967  *
1968  */
1969 static inline void
1970 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1971 {
1972         struct megasas_instance *instance;
1973         u32 mr_nvme_pg_size;
1974
1975         instance = (struct megasas_instance *)sdev->host->hostdata;
1976         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1977                                 MR_DEFAULT_NVME_PAGE_SIZE);
1978
1979         blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1980
1981         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1982         blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1983 }
1984
1985 /*
1986  * megasas_set_fw_assisted_qd -
1987  * set device queue depth to can_queue
1988  * set device queue depth to fw assisted qd
1989  *
1990  * @sdev:                               scsi device
1991  * @is_target_prop                      true, if fw provided target properties.
1992  */
1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994                                                  bool is_target_prop)
1995 {
1996         u8 interface_type;
1997         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998         u32 tgt_device_qd;
1999         struct megasas_instance *instance;
2000         struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002         instance = megasas_lookup_instance(sdev->host->host_no);
2003         mr_device_priv_data = sdev->hostdata;
2004         interface_type  = mr_device_priv_data->interface_type;
2005
2006         switch (interface_type) {
2007         case SAS_PD:
2008                 device_qd = MEGASAS_SAS_QD;
2009                 break;
2010         case SATA_PD:
2011                 device_qd = MEGASAS_SATA_QD;
2012                 break;
2013         case NVME_PD:
2014                 device_qd = MEGASAS_NVME_QD;
2015                 break;
2016         }
2017
2018         if (is_target_prop) {
2019                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020                 if (tgt_device_qd)
2021                         device_qd = min(instance->host->can_queue,
2022                                         (int)tgt_device_qd);
2023         }
2024
2025         if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026                 device_qd = instance->host->can_queue;
2027
2028         scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032  * megasas_set_static_target_properties -
2033  * Device property set by driver are static and it is not required to be
2034  * updated after OCR.
2035  *
2036  * set io timeout
2037  * set device queue depth
2038  * set nvme device properties. see - megasas_set_nvme_device_properties
2039  *
2040  * @sdev:                               scsi device
2041  * @is_target_prop                      true, if fw provided target properties.
2042  */
2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044                                                  bool is_target_prop)
2045 {
2046         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047         struct megasas_instance *instance;
2048
2049         instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051         /*
2052          * The RAID firmware may require extended timeouts.
2053          */
2054         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056         /* max_io_size_kb will be set to non zero for
2057          * nvme based vd and syspd.
2058          */
2059         if (is_target_prop)
2060                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062         if (instance->nvme_page_size && max_io_size_kb)
2063                 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2064
2065         megasas_set_fw_assisted_qd(sdev, is_target_prop);
2066 }
2067
2068
2069 static int megasas_slave_configure(struct scsi_device *sdev)
2070 {
2071         u16 pd_index = 0;
2072         struct megasas_instance *instance;
2073         int ret_target_prop = DCMD_FAILED;
2074         bool is_target_prop = false;
2075
2076         instance = megasas_lookup_instance(sdev->host->host_no);
2077         if (instance->pd_list_not_supported) {
2078                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2079                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2080                                 sdev->id;
2081                         if (instance->pd_list[pd_index].driveState !=
2082                                 MR_PD_STATE_SYSTEM)
2083                                 return -ENXIO;
2084                 }
2085         }
2086
2087         mutex_lock(&instance->reset_mutex);
2088         /* Send DCMD to Firmware and cache the information */
2089         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2090                 megasas_get_pd_info(instance, sdev);
2091
2092         /* Some ventura firmware may not have instance->nvme_page_size set.
2093          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2094          */
2095         if ((instance->tgt_prop) && (instance->nvme_page_size))
2096                 ret_target_prop = megasas_get_target_prop(instance, sdev);
2097
2098         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2099         megasas_set_static_target_properties(sdev, is_target_prop);
2100
2101         /* This sdev property may change post OCR */
2102         megasas_set_dynamic_target_properties(sdev, is_target_prop);
2103
2104         mutex_unlock(&instance->reset_mutex);
2105
2106         return 0;
2107 }
2108
2109 static int megasas_slave_alloc(struct scsi_device *sdev)
2110 {
2111         u16 pd_index = 0, ld_tgt_id;
2112         struct megasas_instance *instance ;
2113         struct MR_PRIV_DEVICE *mr_device_priv_data;
2114
2115         instance = megasas_lookup_instance(sdev->host->host_no);
2116         if (!MEGASAS_IS_LOGICAL(sdev)) {
2117                 /*
2118                  * Open the OS scan to the SYSTEM PD
2119                  */
2120                 pd_index =
2121                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2122                         sdev->id;
2123                 if ((instance->pd_list_not_supported ||
2124                         instance->pd_list[pd_index].driveState ==
2125                         MR_PD_STATE_SYSTEM)) {
2126                         goto scan_target;
2127                 }
2128                 return -ENXIO;
2129         } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2130                 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2131                 return -ENXIO;
2132         }
2133
2134 scan_target:
2135         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2136                                         GFP_KERNEL);
2137         if (!mr_device_priv_data)
2138                 return -ENOMEM;
2139
2140         if (MEGASAS_IS_LOGICAL(sdev)) {
2141                 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2142                 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2143                 if (megasas_dbg_lvl & LD_PD_DEBUG)
2144                         sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2145         }
2146
2147         sdev->hostdata = mr_device_priv_data;
2148
2149         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2150                    instance->r1_ldio_hint_default);
2151         return 0;
2152 }
2153
2154 static void megasas_slave_destroy(struct scsi_device *sdev)
2155 {
2156         u16 ld_tgt_id;
2157         struct megasas_instance *instance;
2158
2159         instance = megasas_lookup_instance(sdev->host->host_no);
2160
2161         if (MEGASAS_IS_LOGICAL(sdev)) {
2162                 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2163                         sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2164                         return;
2165                 }
2166                 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2167                 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2168                 if (megasas_dbg_lvl & LD_PD_DEBUG)
2169                         sdev_printk(KERN_INFO, sdev,
2170                                     "LD target ID %d removed from OS stack\n", ld_tgt_id);
2171         }
2172
2173         kfree(sdev->hostdata);
2174         sdev->hostdata = NULL;
2175 }
2176
2177 /*
2178 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2179 *                                       kill adapter
2180 * @instance:                            Adapter soft state
2181 *
2182 */
2183 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2184 {
2185         int i;
2186         struct megasas_cmd *cmd_mfi;
2187         struct megasas_cmd_fusion *cmd_fusion;
2188         struct fusion_context *fusion = instance->ctrl_context;
2189
2190         /* Find all outstanding ioctls */
2191         if (fusion) {
2192                 for (i = 0; i < instance->max_fw_cmds; i++) {
2193                         cmd_fusion = fusion->cmd_list[i];
2194                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2195                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2196                                 if (cmd_mfi->sync_cmd &&
2197                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2198                                         cmd_mfi->frame->hdr.cmd_status =
2199                                                         MFI_STAT_WRONG_STATE;
2200                                         megasas_complete_cmd(instance,
2201                                                              cmd_mfi, DID_OK);
2202                                 }
2203                         }
2204                 }
2205         } else {
2206                 for (i = 0; i < instance->max_fw_cmds; i++) {
2207                         cmd_mfi = instance->cmd_list[i];
2208                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2209                                 MFI_CMD_ABORT)
2210                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2211                 }
2212         }
2213 }
2214
2215
2216 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2217 {
2218         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2219                 dev_warn(&instance->pdev->dev,
2220                          "Adapter already dead, skipping kill HBA\n");
2221                 return;
2222         }
2223
2224         /* Set critical error to block I/O & ioctls in case caller didn't */
2225         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2226         /* Wait 1 second to ensure IO or ioctls in build have posted */
2227         msleep(1000);
2228         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2229                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2230                 (instance->adapter_type != MFI_SERIES)) {
2231                 if (!instance->requestorId) {
2232                         writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2233                         /* Flush */
2234                         readl(&instance->reg_set->doorbell);
2235                 }
2236                 if (instance->requestorId && instance->peerIsPresent)
2237                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2238         } else {
2239                 writel(MFI_STOP_ADP,
2240                         &instance->reg_set->inbound_doorbell);
2241         }
2242         /* Complete outstanding ioctls when adapter is killed */
2243         megasas_complete_outstanding_ioctls(instance);
2244 }
2245
2246  /**
2247   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2248   *                                     restored to max value
2249   * @instance:                  Adapter soft state
2250   *
2251   */
2252 void
2253 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2254 {
2255         unsigned long flags;
2256
2257         if (instance->flag & MEGASAS_FW_BUSY
2258             && time_after(jiffies, instance->last_time + 5 * HZ)
2259             && atomic_read(&instance->fw_outstanding) <
2260             instance->throttlequeuedepth + 1) {
2261
2262                 spin_lock_irqsave(instance->host->host_lock, flags);
2263                 instance->flag &= ~MEGASAS_FW_BUSY;
2264
2265                 instance->host->can_queue = instance->cur_can_queue;
2266                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2267         }
2268 }
2269
2270 /**
2271  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2272  * @instance_addr:                      Address of adapter soft state
2273  *
2274  * Tasklet to complete cmds
2275  */
2276 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2277 {
2278         u32 producer;
2279         u32 consumer;
2280         u32 context;
2281         struct megasas_cmd *cmd;
2282         struct megasas_instance *instance =
2283                                 (struct megasas_instance *)instance_addr;
2284         unsigned long flags;
2285
2286         /* If we have already declared adapter dead, donot complete cmds */
2287         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2288                 return;
2289
2290         spin_lock_irqsave(&instance->completion_lock, flags);
2291
2292         producer = le32_to_cpu(*instance->producer);
2293         consumer = le32_to_cpu(*instance->consumer);
2294
2295         while (consumer != producer) {
2296                 context = le32_to_cpu(instance->reply_queue[consumer]);
2297                 if (context >= instance->max_fw_cmds) {
2298                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2299                                 context);
2300                         BUG();
2301                 }
2302
2303                 cmd = instance->cmd_list[context];
2304
2305                 megasas_complete_cmd(instance, cmd, DID_OK);
2306
2307                 consumer++;
2308                 if (consumer == (instance->max_fw_cmds + 1)) {
2309                         consumer = 0;
2310                 }
2311         }
2312
2313         *instance->consumer = cpu_to_le32(producer);
2314
2315         spin_unlock_irqrestore(&instance->completion_lock, flags);
2316
2317         /*
2318          * Check if we can restore can_queue
2319          */
2320         megasas_check_and_restore_queue_depth(instance);
2321 }
2322
2323 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2324
2325 /**
2326  * megasas_start_timer - Initializes sriov heartbeat timer object
2327  * @instance:           Adapter soft state
2328  *
2329  */
2330 void megasas_start_timer(struct megasas_instance *instance)
2331 {
2332         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2333
2334         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2335         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2336         add_timer(timer);
2337 }
2338
2339 static void
2340 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2341
2342 static void
2343 process_fw_state_change_wq(struct work_struct *work);
2344
2345 static void megasas_do_ocr(struct megasas_instance *instance)
2346 {
2347         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2348         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2349         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2350                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2351         }
2352         instance->instancet->disable_intr(instance);
2353         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2354         instance->issuepend_done = 0;
2355
2356         atomic_set(&instance->fw_outstanding, 0);
2357         megasas_internal_reset_defer_cmds(instance);
2358         process_fw_state_change_wq(&instance->work_init);
2359 }
2360
2361 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2362                                             int initial)
2363 {
2364         struct megasas_cmd *cmd;
2365         struct megasas_dcmd_frame *dcmd;
2366         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2367         dma_addr_t new_affiliation_111_h;
2368         int ld, retval = 0;
2369         u8 thisVf;
2370
2371         cmd = megasas_get_cmd(instance);
2372
2373         if (!cmd) {
2374                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2375                        "Failed to get cmd for scsi%d\n",
2376                         instance->host->host_no);
2377                 return -ENOMEM;
2378         }
2379
2380         dcmd = &cmd->frame->dcmd;
2381
2382         if (!instance->vf_affiliation_111) {
2383                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2384                        "affiliation for scsi%d\n", instance->host->host_no);
2385                 megasas_return_cmd(instance, cmd);
2386                 return -ENOMEM;
2387         }
2388
2389         if (initial)
2390                         memset(instance->vf_affiliation_111, 0,
2391                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2392         else {
2393                 new_affiliation_111 =
2394                         dma_alloc_coherent(&instance->pdev->dev,
2395                                            sizeof(struct MR_LD_VF_AFFILIATION_111),
2396                                            &new_affiliation_111_h, GFP_KERNEL);
2397                 if (!new_affiliation_111) {
2398                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2399                                "memory for new affiliation for scsi%d\n",
2400                                instance->host->host_no);
2401                         megasas_return_cmd(instance, cmd);
2402                         return -ENOMEM;
2403                 }
2404         }
2405
2406         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2407
2408         dcmd->cmd = MFI_CMD_DCMD;
2409         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2410         dcmd->sge_count = 1;
2411         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2412         dcmd->timeout = 0;
2413         dcmd->pad_0 = 0;
2414         dcmd->data_xfer_len =
2415                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2416         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2417
2418         if (initial)
2419                 dcmd->sgl.sge32[0].phys_addr =
2420                         cpu_to_le32(instance->vf_affiliation_111_h);
2421         else
2422                 dcmd->sgl.sge32[0].phys_addr =
2423                         cpu_to_le32(new_affiliation_111_h);
2424
2425         dcmd->sgl.sge32[0].length = cpu_to_le32(
2426                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2427
2428         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2429                "scsi%d\n", instance->host->host_no);
2430
2431         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2432                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2433                        " failed with status 0x%x for scsi%d\n",
2434                        dcmd->cmd_status, instance->host->host_no);
2435                 retval = 1; /* Do a scan if we couldn't get affiliation */
2436                 goto out;
2437         }
2438
2439         if (!initial) {
2440                 thisVf = new_affiliation_111->thisVf;
2441                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2442                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2443                             new_affiliation_111->map[ld].policy[thisVf]) {
2444                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2445                                        "Got new LD/VF affiliation for scsi%d\n",
2446                                        instance->host->host_no);
2447                                 memcpy(instance->vf_affiliation_111,
2448                                        new_affiliation_111,
2449                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2450                                 retval = 1;
2451                                 goto out;
2452                         }
2453         }
2454 out:
2455         if (new_affiliation_111) {
2456                 dma_free_coherent(&instance->pdev->dev,
2457                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2458                                     new_affiliation_111,
2459                                     new_affiliation_111_h);
2460         }
2461
2462         megasas_return_cmd(instance, cmd);
2463
2464         return retval;
2465 }
2466
2467 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2468                                             int initial)
2469 {
2470         struct megasas_cmd *cmd;
2471         struct megasas_dcmd_frame *dcmd;
2472         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2473         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2474         dma_addr_t new_affiliation_h;
2475         int i, j, retval = 0, found = 0, doscan = 0;
2476         u8 thisVf;
2477
2478         cmd = megasas_get_cmd(instance);
2479
2480         if (!cmd) {
2481                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2482                        "Failed to get cmd for scsi%d\n",
2483                        instance->host->host_no);
2484                 return -ENOMEM;
2485         }
2486
2487         dcmd = &cmd->frame->dcmd;
2488
2489         if (!instance->vf_affiliation) {
2490                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2491                        "affiliation for scsi%d\n", instance->host->host_no);
2492                 megasas_return_cmd(instance, cmd);
2493                 return -ENOMEM;
2494         }
2495
2496         if (initial)
2497                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2498                        sizeof(struct MR_LD_VF_AFFILIATION));
2499         else {
2500                 new_affiliation =
2501                         dma_alloc_coherent(&instance->pdev->dev,
2502                                            (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2503                                            &new_affiliation_h, GFP_KERNEL);
2504                 if (!new_affiliation) {
2505                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2506                                "memory for new affiliation for scsi%d\n",
2507                                instance->host->host_no);
2508                         megasas_return_cmd(instance, cmd);
2509                         return -ENOMEM;
2510                 }
2511         }
2512
2513         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2514
2515         dcmd->cmd = MFI_CMD_DCMD;
2516         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2517         dcmd->sge_count = 1;
2518         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2519         dcmd->timeout = 0;
2520         dcmd->pad_0 = 0;
2521         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2522                 sizeof(struct MR_LD_VF_AFFILIATION));
2523         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2524
2525         if (initial)
2526                 dcmd->sgl.sge32[0].phys_addr =
2527                         cpu_to_le32(instance->vf_affiliation_h);
2528         else
2529                 dcmd->sgl.sge32[0].phys_addr =
2530                         cpu_to_le32(new_affiliation_h);
2531
2532         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2533                 sizeof(struct MR_LD_VF_AFFILIATION));
2534
2535         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2536                "scsi%d\n", instance->host->host_no);
2537
2538
2539         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2540                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2541                        " failed with status 0x%x for scsi%d\n",
2542                        dcmd->cmd_status, instance->host->host_no);
2543                 retval = 1; /* Do a scan if we couldn't get affiliation */
2544                 goto out;
2545         }
2546
2547         if (!initial) {
2548                 if (!new_affiliation->ldCount) {
2549                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2550                                "affiliation for passive path for scsi%d\n",
2551                                instance->host->host_no);
2552                         retval = 1;
2553                         goto out;
2554                 }
2555                 newmap = new_affiliation->map;
2556                 savedmap = instance->vf_affiliation->map;
2557                 thisVf = new_affiliation->thisVf;
2558                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2559                         found = 0;
2560                         for (j = 0; j < instance->vf_affiliation->ldCount;
2561                              j++) {
2562                                 if (newmap->ref.targetId ==
2563                                     savedmap->ref.targetId) {
2564                                         found = 1;
2565                                         if (newmap->policy[thisVf] !=
2566                                             savedmap->policy[thisVf]) {
2567                                                 doscan = 1;
2568                                                 goto out;
2569                                         }
2570                                 }
2571                                 savedmap = (struct MR_LD_VF_MAP *)
2572                                         ((unsigned char *)savedmap +
2573                                          savedmap->size);
2574                         }
2575                         if (!found && newmap->policy[thisVf] !=
2576                             MR_LD_ACCESS_HIDDEN) {
2577                                 doscan = 1;
2578                                 goto out;
2579                         }
2580                         newmap = (struct MR_LD_VF_MAP *)
2581                                 ((unsigned char *)newmap + newmap->size);
2582                 }
2583
2584                 newmap = new_affiliation->map;
2585                 savedmap = instance->vf_affiliation->map;
2586
2587                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2588                         found = 0;
2589                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2590                                 if (savedmap->ref.targetId ==
2591                                     newmap->ref.targetId) {
2592                                         found = 1;
2593                                         if (savedmap->policy[thisVf] !=
2594                                             newmap->policy[thisVf]) {
2595                                                 doscan = 1;
2596                                                 goto out;
2597                                         }
2598                                 }
2599                                 newmap = (struct MR_LD_VF_MAP *)
2600                                         ((unsigned char *)newmap +
2601                                          newmap->size);
2602                         }
2603                         if (!found && savedmap->policy[thisVf] !=
2604                             MR_LD_ACCESS_HIDDEN) {
2605                                 doscan = 1;
2606                                 goto out;
2607                         }
2608                         savedmap = (struct MR_LD_VF_MAP *)
2609                                 ((unsigned char *)savedmap +
2610                                  savedmap->size);
2611                 }
2612         }
2613 out:
2614         if (doscan) {
2615                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2616                        "affiliation for scsi%d\n", instance->host->host_no);
2617                 memcpy(instance->vf_affiliation, new_affiliation,
2618                        new_affiliation->size);
2619                 retval = 1;
2620         }
2621
2622         if (new_affiliation)
2623                 dma_free_coherent(&instance->pdev->dev,
2624                                     (MAX_LOGICAL_DRIVES + 1) *
2625                                     sizeof(struct MR_LD_VF_AFFILIATION),
2626                                     new_affiliation, new_affiliation_h);
2627         megasas_return_cmd(instance, cmd);
2628
2629         return retval;
2630 }
2631
2632 /* This function will get the current SR-IOV LD/VF affiliation */
2633 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2634         int initial)
2635 {
2636         int retval;
2637
2638         if (instance->PlasmaFW111)
2639                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2640         else
2641                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2642         return retval;
2643 }
2644
2645 /* This function will tell FW to start the SR-IOV heartbeat */
2646 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2647                                          int initial)
2648 {
2649         struct megasas_cmd *cmd;
2650         struct megasas_dcmd_frame *dcmd;
2651         int retval = 0;
2652
2653         cmd = megasas_get_cmd(instance);
2654
2655         if (!cmd) {
2656                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2657                        "Failed to get cmd for scsi%d\n",
2658                        instance->host->host_no);
2659                 return -ENOMEM;
2660         }
2661
2662         dcmd = &cmd->frame->dcmd;
2663
2664         if (initial) {
2665                 instance->hb_host_mem =
2666                         dma_alloc_coherent(&instance->pdev->dev,
2667                                            sizeof(struct MR_CTRL_HB_HOST_MEM),
2668                                            &instance->hb_host_mem_h,
2669                                            GFP_KERNEL);
2670                 if (!instance->hb_host_mem) {
2671                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2672                                " memory for heartbeat host memory for scsi%d\n",
2673                                instance->host->host_no);
2674                         retval = -ENOMEM;
2675                         goto out;
2676                 }
2677         }
2678
2679         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2680
2681         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2682         dcmd->cmd = MFI_CMD_DCMD;
2683         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2684         dcmd->sge_count = 1;
2685         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2686         dcmd->timeout = 0;
2687         dcmd->pad_0 = 0;
2688         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2689         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2690
2691         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2692                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2693
2694         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2695                instance->host->host_no);
2696
2697         if ((instance->adapter_type != MFI_SERIES) &&
2698             !instance->mask_interrupts)
2699                 retval = megasas_issue_blocked_cmd(instance, cmd,
2700                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2701         else
2702                 retval = megasas_issue_polled(instance, cmd);
2703
2704         if (retval) {
2705                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2706                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2707                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2708                         "timed out" : "failed", instance->host->host_no);
2709                 retval = 1;
2710         }
2711
2712 out:
2713         megasas_return_cmd(instance, cmd);
2714
2715         return retval;
2716 }
2717
2718 /* Handler for SR-IOV heartbeat */
2719 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2720 {
2721         struct megasas_instance *instance =
2722                 from_timer(instance, t, sriov_heartbeat_timer);
2723
2724         if (instance->hb_host_mem->HB.fwCounter !=
2725             instance->hb_host_mem->HB.driverCounter) {
2726                 instance->hb_host_mem->HB.driverCounter =
2727                         instance->hb_host_mem->HB.fwCounter;
2728                 mod_timer(&instance->sriov_heartbeat_timer,
2729                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2730         } else {
2731                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2732                        "completed for scsi%d\n", instance->host->host_no);
2733                 schedule_work(&instance->work_init);
2734         }
2735 }
2736
2737 /**
2738  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2739  * @instance:                           Adapter soft state
2740  *
2741  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2742  * complete all its outstanding commands. Returns error if one or more IOs
2743  * are pending after this time period. It also marks the controller dead.
2744  */
2745 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2746 {
2747         int i, sl, outstanding;
2748         u32 reset_index;
2749         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2750         unsigned long flags;
2751         struct list_head clist_local;
2752         struct megasas_cmd *reset_cmd;
2753         u32 fw_state;
2754
2755         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2756                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2757                 __func__, __LINE__);
2758                 return FAILED;
2759         }
2760
2761         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2762
2763                 INIT_LIST_HEAD(&clist_local);
2764                 spin_lock_irqsave(&instance->hba_lock, flags);
2765                 list_splice_init(&instance->internal_reset_pending_q,
2766                                 &clist_local);
2767                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2768
2769                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2770                 for (i = 0; i < wait_time; i++) {
2771                         msleep(1000);
2772                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2773                                 break;
2774                 }
2775
2776                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2777                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2778                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2779                         return FAILED;
2780                 }
2781
2782                 reset_index = 0;
2783                 while (!list_empty(&clist_local)) {
2784                         reset_cmd = list_entry((&clist_local)->next,
2785                                                 struct megasas_cmd, list);
2786                         list_del_init(&reset_cmd->list);
2787                         if (reset_cmd->scmd) {
2788                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2789                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2790                                         reset_index, reset_cmd,
2791                                         reset_cmd->scmd->cmnd[0]);
2792
2793                                 scsi_done(reset_cmd->scmd);
2794                                 megasas_return_cmd(instance, reset_cmd);
2795                         } else if (reset_cmd->sync_cmd) {
2796                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2797                                                 "reset queue\n",
2798                                                 reset_cmd);
2799
2800                                 reset_cmd->cmd_status_drv = DCMD_INIT;
2801                                 instance->instancet->fire_cmd(instance,
2802                                                 reset_cmd->frame_phys_addr,
2803                                                 0, instance->reg_set);
2804                         } else {
2805                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2806                                         "cmds lst\n",
2807                                         reset_cmd);
2808                         }
2809                         reset_index++;
2810                 }
2811
2812                 return SUCCESS;
2813         }
2814
2815         for (i = 0; i < resetwaittime; i++) {
2816                 outstanding = atomic_read(&instance->fw_outstanding);
2817
2818                 if (!outstanding)
2819                         break;
2820
2821                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2822                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2823                                "commands to complete\n",i,outstanding);
2824                         /*
2825                          * Call cmd completion routine. Cmd to be
2826                          * be completed directly without depending on isr.
2827                          */
2828                         megasas_complete_cmd_dpc((unsigned long)instance);
2829                 }
2830
2831                 msleep(1000);
2832         }
2833
2834         i = 0;
2835         outstanding = atomic_read(&instance->fw_outstanding);
2836         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2837
2838         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2839                 goto no_outstanding;
2840
2841         if (instance->disableOnlineCtrlReset)
2842                 goto kill_hba_and_failed;
2843         do {
2844                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2845                         dev_info(&instance->pdev->dev,
2846                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2847                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2848                         if (i == 3)
2849                                 goto kill_hba_and_failed;
2850                         megasas_do_ocr(instance);
2851
2852                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2853                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2854                                 __func__, __LINE__);
2855                                 return FAILED;
2856                         }
2857                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2858                                 __func__, __LINE__);
2859
2860                         for (sl = 0; sl < 10; sl++)
2861                                 msleep(500);
2862
2863                         outstanding = atomic_read(&instance->fw_outstanding);
2864
2865                         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2866                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2867                                 goto no_outstanding;
2868                 }
2869                 i++;
2870         } while (i <= 3);
2871
2872 no_outstanding:
2873
2874         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2875                 __func__, __LINE__);
2876         return SUCCESS;
2877
2878 kill_hba_and_failed:
2879
2880         /* Reset not supported, kill adapter */
2881         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2882                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2883                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2884                 atomic_read(&instance->fw_outstanding));
2885         megasas_dump_pending_frames(instance);
2886         megaraid_sas_kill_hba(instance);
2887
2888         return FAILED;
2889 }
2890
2891 /**
2892  * megasas_generic_reset -      Generic reset routine
2893  * @scmd:                       Mid-layer SCSI command
2894  *
2895  * This routine implements a generic reset handler for device, bus and host
2896  * reset requests. Device, bus and host specific reset handlers can use this
2897  * function after they do their specific tasks.
2898  */
2899 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2900 {
2901         int ret_val;
2902         struct megasas_instance *instance;
2903
2904         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2905
2906         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2907                  scmd->cmnd[0], scmd->retries);
2908
2909         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2910                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2911                 return FAILED;
2912         }
2913
2914         ret_val = megasas_wait_for_outstanding(instance);
2915         if (ret_val == SUCCESS)
2916                 dev_notice(&instance->pdev->dev, "reset successful\n");
2917         else
2918                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2919
2920         return ret_val;
2921 }
2922
2923 /**
2924  * megasas_reset_timer - quiesce the adapter if required
2925  * @scmd:               scsi cmnd
2926  *
2927  * Sets the FW busy flag and reduces the host->can_queue if the
2928  * cmd has not been completed within the timeout period.
2929  */
2930 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2931 {
2932         struct megasas_instance *instance;
2933         unsigned long flags;
2934
2935         if (time_after(jiffies, scmd->jiffies_at_alloc +
2936                                 (scmd_timeout * 2) * HZ)) {
2937                 return SCSI_EH_NOT_HANDLED;
2938         }
2939
2940         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2941         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2942                 /* FW is busy, throttle IO */
2943                 spin_lock_irqsave(instance->host->host_lock, flags);
2944
2945                 instance->host->can_queue = instance->throttlequeuedepth;
2946                 instance->last_time = jiffies;
2947                 instance->flag |= MEGASAS_FW_BUSY;
2948
2949                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2950         }
2951         return SCSI_EH_RESET_TIMER;
2952 }
2953
2954 /**
2955  * megasas_dump -       This function will print hexdump of provided buffer.
2956  * @buf:                Buffer to be dumped
2957  * @sz:         Size in bytes
2958  * @format:             Different formats of dumping e.g. format=n will
2959  *                      cause only 'n' 32 bit words to be dumped in a single
2960  *                      line.
2961  */
2962 inline void
2963 megasas_dump(void *buf, int sz, int format)
2964 {
2965         int i;
2966         __le32 *buf_loc = (__le32 *)buf;
2967
2968         for (i = 0; i < (sz / sizeof(__le32)); i++) {
2969                 if ((i % format) == 0) {
2970                         if (i != 0)
2971                                 printk(KERN_CONT "\n");
2972                         printk(KERN_CONT "%08x: ", (i * 4));
2973                 }
2974                 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2975         }
2976         printk(KERN_CONT "\n");
2977 }
2978
2979 /**
2980  * megasas_dump_reg_set -       This function will print hexdump of register set
2981  * @reg_set:    Register set to be dumped
2982  */
2983 inline void
2984 megasas_dump_reg_set(void __iomem *reg_set)
2985 {
2986         unsigned int i, sz = 256;
2987         u32 __iomem *reg = (u32 __iomem *)reg_set;
2988
2989         for (i = 0; i < (sz / sizeof(u32)); i++)
2990                 printk("%08x: %08x\n", (i * 4), readl(&reg[i]));
2991 }
2992
2993 /**
2994  * megasas_dump_fusion_io -     This function will print key details
2995  *                              of SCSI IO
2996  * @scmd:                       SCSI command pointer of SCSI IO
2997  */
2998 void
2999 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3000 {
3001         struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3002         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3003         struct megasas_instance *instance;
3004
3005         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3006
3007         scmd_printk(KERN_INFO, scmd,
3008                     "scmd: (0x%p)  retries: 0x%x  allowed: 0x%x\n",
3009                     scmd, scmd->retries, scmd->allowed);
3010         scsi_print_command(scmd);
3011
3012         if (cmd) {
3013                 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3014                 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3015                 scmd_printk(KERN_INFO, scmd,
3016                             "RequestFlags:0x%x  MSIxIndex:0x%x  SMID:0x%x  LMID:0x%x  DevHandle:0x%x\n",
3017                             req_desc->SCSIIO.RequestFlags,
3018                             req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3019                             req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3020
3021                 printk(KERN_INFO "IO request frame:\n");
3022                 megasas_dump(cmd->io_request,
3023                              MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3024                 printk(KERN_INFO "Chain frame:\n");
3025                 megasas_dump(cmd->sg_frame,
3026                              instance->max_chain_frame_sz, 8);
3027         }
3028
3029 }
3030
3031 /*
3032  * megasas_dump_sys_regs - This function will dump system registers through
3033  *                          sysfs.
3034  * @reg_set:                Pointer to System register set.
3035  * @buf:                    Buffer to which output is to be written.
3036  * @return:                 Number of bytes written to buffer.
3037  */
3038 static inline ssize_t
3039 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3040 {
3041         unsigned int i, sz = 256;
3042         int bytes_wrote = 0;
3043         char *loc = (char *)buf;
3044         u32 __iomem *reg = (u32 __iomem *)reg_set;
3045
3046         for (i = 0; i < sz / sizeof(u32); i++) {
3047                 bytes_wrote += scnprintf(loc + bytes_wrote,
3048                                          PAGE_SIZE - bytes_wrote,
3049                                          "%08x: %08x\n", (i * 4),
3050                                          readl(&reg[i]));
3051         }
3052         return bytes_wrote;
3053 }
3054
3055 /**
3056  * megasas_reset_bus_host -     Bus & host reset handler entry point
3057  * @scmd:                       Mid-layer SCSI command
3058  */
3059 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3060 {
3061         int ret;
3062         struct megasas_instance *instance;
3063
3064         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3065
3066         scmd_printk(KERN_INFO, scmd,
3067                 "OCR is requested due to IO timeout!!\n");
3068
3069         scmd_printk(KERN_INFO, scmd,
3070                 "SCSI host state: %d  SCSI host busy: %d  FW outstanding: %d\n",
3071                 scmd->device->host->shost_state,
3072                 scsi_host_busy(scmd->device->host),
3073                 atomic_read(&instance->fw_outstanding));
3074         /*
3075          * First wait for all commands to complete
3076          */
3077         if (instance->adapter_type == MFI_SERIES) {
3078                 ret = megasas_generic_reset(scmd);
3079         } else {
3080                 megasas_dump_fusion_io(scmd);
3081                 ret = megasas_reset_fusion(scmd->device->host,
3082                                 SCSIIO_TIMEOUT_OCR);
3083         }
3084
3085         return ret;
3086 }
3087
3088 /**
3089  * megasas_task_abort - Issues task abort request to firmware
3090  *                      (supported only for fusion adapters)
3091  * @scmd:               SCSI command pointer
3092  */
3093 static int megasas_task_abort(struct scsi_cmnd *scmd)
3094 {
3095         int ret;
3096         struct megasas_instance *instance;
3097
3098         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3099
3100         if (instance->adapter_type != MFI_SERIES)
3101                 ret = megasas_task_abort_fusion(scmd);
3102         else {
3103                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3104                 ret = FAILED;
3105         }
3106
3107         return ret;
3108 }
3109
3110 /**
3111  * megasas_reset_target:  Issues target reset request to firmware
3112  *                        (supported only for fusion adapters)
3113  * @scmd:                 SCSI command pointer
3114  */
3115 static int megasas_reset_target(struct scsi_cmnd *scmd)
3116 {
3117         int ret;
3118         struct megasas_instance *instance;
3119
3120         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3121
3122         if (instance->adapter_type != MFI_SERIES)
3123                 ret = megasas_reset_target_fusion(scmd);
3124         else {
3125                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3126                 ret = FAILED;
3127         }
3128
3129         return ret;
3130 }
3131
3132 /**
3133  * megasas_bios_param - Returns disk geometry for a disk
3134  * @sdev:               device handle
3135  * @bdev:               block device
3136  * @capacity:           drive capacity
3137  * @geom:               geometry parameters
3138  */
3139 static int
3140 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3141                  sector_t capacity, int geom[])
3142 {
3143         int heads;
3144         int sectors;
3145         sector_t cylinders;
3146         unsigned long tmp;
3147
3148         /* Default heads (64) & sectors (32) */
3149         heads = 64;
3150         sectors = 32;
3151
3152         tmp = heads * sectors;
3153         cylinders = capacity;
3154
3155         sector_div(cylinders, tmp);
3156
3157         /*
3158          * Handle extended translation size for logical drives > 1Gb
3159          */
3160
3161         if (capacity >= 0x200000) {
3162                 heads = 255;
3163                 sectors = 63;
3164                 tmp = heads*sectors;
3165                 cylinders = capacity;
3166                 sector_div(cylinders, tmp);
3167         }
3168
3169         geom[0] = heads;
3170         geom[1] = sectors;
3171         geom[2] = cylinders;
3172
3173         return 0;
3174 }
3175
3176 static void megasas_map_queues(struct Scsi_Host *shost)
3177 {
3178         struct megasas_instance *instance;
3179         int qoff = 0, offset;
3180         struct blk_mq_queue_map *map;
3181
3182         instance = (struct megasas_instance *)shost->hostdata;
3183
3184         if (shost->nr_hw_queues == 1)
3185                 return;
3186
3187         offset = instance->low_latency_index_start;
3188
3189         /* Setup Default hctx */
3190         map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3191         map->nr_queues = instance->msix_vectors - offset;
3192         map->queue_offset = 0;
3193         blk_mq_pci_map_queues(map, instance->pdev, offset);
3194         qoff += map->nr_queues;
3195         offset += map->nr_queues;
3196
3197         /* we never use READ queue, so can't cheat blk-mq */
3198         shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3199
3200         /* Setup Poll hctx */
3201         map = &shost->tag_set.map[HCTX_TYPE_POLL];
3202         map->nr_queues = instance->iopoll_q_count;
3203         if (map->nr_queues) {
3204                 /*
3205                  * The poll queue(s) doesn't have an IRQ (and hence IRQ
3206                  * affinity), so use the regular blk-mq cpu mapping
3207                  */
3208                 map->queue_offset = qoff;
3209                 blk_mq_map_queues(map);
3210         }
3211 }
3212
3213 static void megasas_aen_polling(struct work_struct *work);
3214
3215 /**
3216  * megasas_service_aen -        Processes an event notification
3217  * @instance:                   Adapter soft state
3218  * @cmd:                        AEN command completed by the ISR
3219  *
3220  * For AEN, driver sends a command down to FW that is held by the FW till an
3221  * event occurs. When an event of interest occurs, FW completes the command
3222  * that it was previously holding.
3223  *
3224  * This routines sends SIGIO signal to processes that have registered with the
3225  * driver for AEN.
3226  */
3227 static void
3228 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3229 {
3230         unsigned long flags;
3231
3232         /*
3233          * Don't signal app if it is just an aborted previously registered aen
3234          */
3235         if ((!cmd->abort_aen) && (instance->unload == 0)) {
3236                 spin_lock_irqsave(&poll_aen_lock, flags);
3237                 megasas_poll_wait_aen = 1;
3238                 spin_unlock_irqrestore(&poll_aen_lock, flags);
3239                 wake_up(&megasas_poll_wait);
3240                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3241         }
3242         else
3243                 cmd->abort_aen = 0;
3244
3245         instance->aen_cmd = NULL;
3246
3247         megasas_return_cmd(instance, cmd);
3248
3249         if ((instance->unload == 0) &&
3250                 ((instance->issuepend_done == 1))) {
3251                 struct megasas_aen_event *ev;
3252
3253                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3254                 if (!ev) {
3255                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3256                 } else {
3257                         ev->instance = instance;
3258                         instance->ev = ev;
3259                         INIT_DELAYED_WORK(&ev->hotplug_work,
3260                                           megasas_aen_polling);
3261                         schedule_delayed_work(&ev->hotplug_work, 0);
3262                 }
3263         }
3264 }
3265
3266 static ssize_t
3267 fw_crash_buffer_store(struct device *cdev,
3268         struct device_attribute *attr, const char *buf, size_t count)
3269 {
3270         struct Scsi_Host *shost = class_to_shost(cdev);
3271         struct megasas_instance *instance =
3272                 (struct megasas_instance *) shost->hostdata;
3273         int val = 0;
3274         unsigned long flags;
3275
3276         if (kstrtoint(buf, 0, &val) != 0)
3277                 return -EINVAL;
3278
3279         spin_lock_irqsave(&instance->crashdump_lock, flags);
3280         instance->fw_crash_buffer_offset = val;
3281         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3282         return strlen(buf);
3283 }
3284
3285 static ssize_t
3286 fw_crash_buffer_show(struct device *cdev,
3287         struct device_attribute *attr, char *buf)
3288 {
3289         struct Scsi_Host *shost = class_to_shost(cdev);
3290         struct megasas_instance *instance =
3291                 (struct megasas_instance *) shost->hostdata;
3292         u32 size;
3293         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3294         unsigned long chunk_left_bytes;
3295         unsigned long src_addr;
3296         unsigned long flags;
3297         u32 buff_offset;
3298
3299         spin_lock_irqsave(&instance->crashdump_lock, flags);
3300         buff_offset = instance->fw_crash_buffer_offset;
3301         if (!instance->crash_dump_buf ||
3302                 !((instance->fw_crash_state == AVAILABLE) ||
3303                 (instance->fw_crash_state == COPYING))) {
3304                 dev_err(&instance->pdev->dev,
3305                         "Firmware crash dump is not available\n");
3306                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3307                 return -EINVAL;
3308         }
3309
3310         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3311                 dev_err(&instance->pdev->dev,
3312                         "Firmware crash dump offset is out of range\n");
3313                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3314                 return 0;
3315         }
3316
3317         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3318         chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3319         size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3320         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3321
3322         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3323                 (buff_offset % dmachunk);
3324         memcpy(buf, (void *)src_addr, size);
3325         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3326
3327         return size;
3328 }
3329
3330 static ssize_t
3331 fw_crash_buffer_size_show(struct device *cdev,
3332         struct device_attribute *attr, char *buf)
3333 {
3334         struct Scsi_Host *shost = class_to_shost(cdev);
3335         struct megasas_instance *instance =
3336                 (struct megasas_instance *) shost->hostdata;
3337
3338         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3339                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3340 }
3341
3342 static ssize_t
3343 fw_crash_state_store(struct device *cdev,
3344         struct device_attribute *attr, const char *buf, size_t count)
3345 {
3346         struct Scsi_Host *shost = class_to_shost(cdev);
3347         struct megasas_instance *instance =
3348                 (struct megasas_instance *) shost->hostdata;
3349         int val = 0;
3350         unsigned long flags;
3351
3352         if (kstrtoint(buf, 0, &val) != 0)
3353                 return -EINVAL;
3354
3355         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3356                 dev_err(&instance->pdev->dev, "application updates invalid "
3357                         "firmware crash state\n");
3358                 return -EINVAL;
3359         }
3360
3361         instance->fw_crash_state = val;
3362
3363         if ((val == COPIED) || (val == COPY_ERROR)) {
3364                 spin_lock_irqsave(&instance->crashdump_lock, flags);
3365                 megasas_free_host_crash_buffer(instance);
3366                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3367                 if (val == COPY_ERROR)
3368                         dev_info(&instance->pdev->dev, "application failed to "
3369                                 "copy Firmware crash dump\n");
3370                 else
3371                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3372                                 "copied successfully\n");
3373         }
3374         return strlen(buf);
3375 }
3376
3377 static ssize_t
3378 fw_crash_state_show(struct device *cdev,
3379         struct device_attribute *attr, char *buf)
3380 {
3381         struct Scsi_Host *shost = class_to_shost(cdev);
3382         struct megasas_instance *instance =
3383                 (struct megasas_instance *) shost->hostdata;
3384
3385         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3386 }
3387
3388 static ssize_t
3389 page_size_show(struct device *cdev,
3390         struct device_attribute *attr, char *buf)
3391 {
3392         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3393 }
3394
3395 static ssize_t
3396 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3397         char *buf)
3398 {
3399         struct Scsi_Host *shost = class_to_shost(cdev);
3400         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3401
3402         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3403 }
3404
3405 static ssize_t
3406 fw_cmds_outstanding_show(struct device *cdev,
3407                                  struct device_attribute *attr, char *buf)
3408 {
3409         struct Scsi_Host *shost = class_to_shost(cdev);
3410         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3411
3412         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3413 }
3414
3415 static ssize_t
3416 enable_sdev_max_qd_show(struct device *cdev,
3417         struct device_attribute *attr, char *buf)
3418 {
3419         struct Scsi_Host *shost = class_to_shost(cdev);
3420         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3421
3422         return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3423 }
3424
3425 static ssize_t
3426 enable_sdev_max_qd_store(struct device *cdev,
3427         struct device_attribute *attr, const char *buf, size_t count)
3428 {
3429         struct Scsi_Host *shost = class_to_shost(cdev);
3430         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3431         u32 val = 0;
3432         bool is_target_prop;
3433         int ret_target_prop = DCMD_FAILED;
3434         struct scsi_device *sdev;
3435
3436         if (kstrtou32(buf, 0, &val) != 0) {
3437                 pr_err("megasas: could not set enable_sdev_max_qd\n");
3438                 return -EINVAL;
3439         }
3440
3441         mutex_lock(&instance->reset_mutex);
3442         if (val)
3443                 instance->enable_sdev_max_qd = true;
3444         else
3445                 instance->enable_sdev_max_qd = false;
3446
3447         shost_for_each_device(sdev, shost) {
3448                 ret_target_prop = megasas_get_target_prop(instance, sdev);
3449                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3450                 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3451         }
3452         mutex_unlock(&instance->reset_mutex);
3453
3454         return strlen(buf);
3455 }
3456
3457 static ssize_t
3458 dump_system_regs_show(struct device *cdev,
3459                                struct device_attribute *attr, char *buf)
3460 {
3461         struct Scsi_Host *shost = class_to_shost(cdev);
3462         struct megasas_instance *instance =
3463                         (struct megasas_instance *)shost->hostdata;
3464
3465         return megasas_dump_sys_regs(instance->reg_set, buf);
3466 }
3467
3468 static ssize_t
3469 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3470                           char *buf)
3471 {
3472         struct Scsi_Host *shost = class_to_shost(cdev);
3473         struct megasas_instance *instance =
3474                         (struct megasas_instance *)shost->hostdata;
3475
3476         return snprintf(buf, PAGE_SIZE, "%ld\n",
3477                         (unsigned long)instance->map_id);
3478 }
3479
3480 static DEVICE_ATTR_RW(fw_crash_buffer);
3481 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3482 static DEVICE_ATTR_RW(fw_crash_state);
3483 static DEVICE_ATTR_RO(page_size);
3484 static DEVICE_ATTR_RO(ldio_outstanding);
3485 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3486 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3487 static DEVICE_ATTR_RO(dump_system_regs);
3488 static DEVICE_ATTR_RO(raid_map_id);
3489
3490 static struct attribute *megaraid_host_attrs[] = {
3491         &dev_attr_fw_crash_buffer_size.attr,
3492         &dev_attr_fw_crash_buffer.attr,
3493         &dev_attr_fw_crash_state.attr,
3494         &dev_attr_page_size.attr,
3495         &dev_attr_ldio_outstanding.attr,
3496         &dev_attr_fw_cmds_outstanding.attr,
3497         &dev_attr_enable_sdev_max_qd.attr,
3498         &dev_attr_dump_system_regs.attr,
3499         &dev_attr_raid_map_id.attr,
3500         NULL,
3501 };
3502
3503 ATTRIBUTE_GROUPS(megaraid_host);
3504
3505 /*
3506  * Scsi host template for megaraid_sas driver
3507  */
3508 static const struct scsi_host_template megasas_template = {
3509
3510         .module = THIS_MODULE,
3511         .name = "Avago SAS based MegaRAID driver",
3512         .proc_name = "megaraid_sas",
3513         .slave_configure = megasas_slave_configure,
3514         .slave_alloc = megasas_slave_alloc,
3515         .slave_destroy = megasas_slave_destroy,
3516         .queuecommand = megasas_queue_command,
3517         .eh_target_reset_handler = megasas_reset_target,
3518         .eh_abort_handler = megasas_task_abort,
3519         .eh_host_reset_handler = megasas_reset_bus_host,
3520         .eh_timed_out = megasas_reset_timer,
3521         .shost_groups = megaraid_host_groups,
3522         .bios_param = megasas_bios_param,
3523         .map_queues = megasas_map_queues,
3524         .mq_poll = megasas_blk_mq_poll,
3525         .change_queue_depth = scsi_change_queue_depth,
3526         .max_segment_size = 0xffffffff,
3527         .cmd_size = sizeof(struct megasas_cmd_priv),
3528 };
3529
3530 /**
3531  * megasas_complete_int_cmd -   Completes an internal command
3532  * @instance:                   Adapter soft state
3533  * @cmd:                        Command to be completed
3534  *
3535  * The megasas_issue_blocked_cmd() function waits for a command to complete
3536  * after it issues a command. This function wakes up that waiting routine by
3537  * calling wake_up() on the wait queue.
3538  */
3539 static void
3540 megasas_complete_int_cmd(struct megasas_instance *instance,
3541                          struct megasas_cmd *cmd)
3542 {
3543         if (cmd->cmd_status_drv == DCMD_INIT)
3544                 cmd->cmd_status_drv =
3545                 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3546                 DCMD_SUCCESS : DCMD_FAILED;
3547
3548         wake_up(&instance->int_cmd_wait_q);
3549 }
3550
3551 /**
3552  * megasas_complete_abort -     Completes aborting a command
3553  * @instance:                   Adapter soft state
3554  * @cmd:                        Cmd that was issued to abort another cmd
3555  *
3556  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3557  * after it issues an abort on a previously issued command. This function
3558  * wakes up all functions waiting on the same wait queue.
3559  */
3560 static void
3561 megasas_complete_abort(struct megasas_instance *instance,
3562                        struct megasas_cmd *cmd)
3563 {
3564         if (cmd->sync_cmd) {
3565                 cmd->sync_cmd = 0;
3566                 cmd->cmd_status_drv = DCMD_SUCCESS;
3567                 wake_up(&instance->abort_cmd_wait_q);
3568         }
3569 }
3570
3571 static void
3572 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3573 {
3574         uint i;
3575
3576         for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3577                 if (instance->ld_ids_prev[i] != 0xff &&
3578                     instance->ld_ids_from_raidmap[i] == 0xff) {
3579                         if (megasas_dbg_lvl & LD_PD_DEBUG)
3580                                 dev_info(&instance->pdev->dev,
3581                                          "LD target ID %d removed from RAID map\n", i);
3582                         instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3583                 }
3584         }
3585 }
3586
3587 /**
3588  * megasas_complete_cmd -       Completes a command
3589  * @instance:                   Adapter soft state
3590  * @cmd:                        Command to be completed
3591  * @alt_status:                 If non-zero, use this value as status to
3592  *                              SCSI mid-layer instead of the value returned
3593  *                              by the FW. This should be used if caller wants
3594  *                              an alternate status (as in the case of aborted
3595  *                              commands)
3596  */
3597 void
3598 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3599                      u8 alt_status)
3600 {
3601         int exception = 0;
3602         struct megasas_header *hdr = &cmd->frame->hdr;
3603         unsigned long flags;
3604         struct fusion_context *fusion = instance->ctrl_context;
3605         u32 opcode, status;
3606
3607         /* flag for the retry reset */
3608         cmd->retry_for_fw_reset = 0;
3609
3610         if (cmd->scmd)
3611                 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3612
3613         switch (hdr->cmd) {
3614         case MFI_CMD_INVALID:
3615                 /* Some older 1068 controller FW may keep a pended
3616                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3617                    when booting the kdump kernel.  Ignore this command to
3618                    prevent a kernel panic on shutdown of the kdump kernel. */
3619                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3620                        "completed\n");
3621                 dev_warn(&instance->pdev->dev, "If you have a controller "
3622                        "other than PERC5, please upgrade your firmware\n");
3623                 break;
3624         case MFI_CMD_PD_SCSI_IO:
3625         case MFI_CMD_LD_SCSI_IO:
3626
3627                 /*
3628                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3629                  * issued either through an IO path or an IOCTL path. If it
3630                  * was via IOCTL, we will send it to internal completion.
3631                  */
3632                 if (cmd->sync_cmd) {
3633                         cmd->sync_cmd = 0;
3634                         megasas_complete_int_cmd(instance, cmd);
3635                         break;
3636                 }
3637                 fallthrough;
3638
3639         case MFI_CMD_LD_READ:
3640         case MFI_CMD_LD_WRITE:
3641
3642                 if (alt_status) {
3643                         cmd->scmd->result = alt_status << 16;
3644                         exception = 1;
3645                 }
3646
3647                 if (exception) {
3648
3649                         atomic_dec(&instance->fw_outstanding);
3650
3651                         scsi_dma_unmap(cmd->scmd);
3652                         scsi_done(cmd->scmd);
3653                         megasas_return_cmd(instance, cmd);
3654
3655                         break;
3656                 }
3657
3658                 switch (hdr->cmd_status) {
3659
3660                 case MFI_STAT_OK:
3661                         cmd->scmd->result = DID_OK << 16;
3662                         break;
3663
3664                 case MFI_STAT_SCSI_IO_FAILED:
3665                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3666                         cmd->scmd->result =
3667                             (DID_ERROR << 16) | hdr->scsi_status;
3668                         break;
3669
3670                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3671
3672                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3673
3674                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3675                                 memset(cmd->scmd->sense_buffer, 0,
3676                                        SCSI_SENSE_BUFFERSIZE);
3677                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3678                                        hdr->sense_len);
3679                         }
3680
3681                         break;
3682
3683                 case MFI_STAT_LD_OFFLINE:
3684                 case MFI_STAT_DEVICE_NOT_FOUND:
3685                         cmd->scmd->result = DID_BAD_TARGET << 16;
3686                         break;
3687
3688                 default:
3689                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3690                                hdr->cmd_status);
3691                         cmd->scmd->result = DID_ERROR << 16;
3692                         break;
3693                 }
3694
3695                 atomic_dec(&instance->fw_outstanding);
3696
3697                 scsi_dma_unmap(cmd->scmd);
3698                 scsi_done(cmd->scmd);
3699                 megasas_return_cmd(instance, cmd);
3700
3701                 break;
3702
3703         case MFI_CMD_SMP:
3704         case MFI_CMD_STP:
3705         case MFI_CMD_NVME:
3706         case MFI_CMD_TOOLBOX:
3707                 megasas_complete_int_cmd(instance, cmd);
3708                 break;
3709
3710         case MFI_CMD_DCMD:
3711                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3712                 /* Check for LD map update */
3713                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3714                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3715                         fusion->fast_path_io = 0;
3716                         spin_lock_irqsave(instance->host->host_lock, flags);
3717                         status = cmd->frame->hdr.cmd_status;
3718                         instance->map_update_cmd = NULL;
3719                         if (status != MFI_STAT_OK) {
3720                                 if (status != MFI_STAT_NOT_FOUND)
3721                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3722                                                cmd->frame->hdr.cmd_status);
3723                                 else {
3724                                         megasas_return_cmd(instance, cmd);
3725                                         spin_unlock_irqrestore(
3726                                                 instance->host->host_lock,
3727                                                 flags);
3728                                         break;
3729                                 }
3730                         }
3731
3732                         megasas_return_cmd(instance, cmd);
3733
3734                         /*
3735                          * Set fast path IO to ZERO.
3736                          * Validate Map will set proper value.
3737                          * Meanwhile all IOs will go as LD IO.
3738                          */
3739                         if (status == MFI_STAT_OK &&
3740                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3741                                 instance->map_id++;
3742                                 fusion->fast_path_io = 1;
3743                         } else {
3744                                 fusion->fast_path_io = 0;
3745                         }
3746
3747                         if (instance->adapter_type >= INVADER_SERIES)
3748                                 megasas_set_ld_removed_by_fw(instance);
3749
3750                         megasas_sync_map_info(instance);
3751                         spin_unlock_irqrestore(instance->host->host_lock,
3752                                                flags);
3753
3754                         break;
3755                 }
3756                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3757                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3758                         spin_lock_irqsave(&poll_aen_lock, flags);
3759                         megasas_poll_wait_aen = 0;
3760                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3761                 }
3762
3763                 /* FW has an updated PD sequence */
3764                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3765                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3766
3767                         spin_lock_irqsave(instance->host->host_lock, flags);
3768                         status = cmd->frame->hdr.cmd_status;
3769                         instance->jbod_seq_cmd = NULL;
3770                         megasas_return_cmd(instance, cmd);
3771
3772                         if (status == MFI_STAT_OK) {
3773                                 instance->pd_seq_map_id++;
3774                                 /* Re-register a pd sync seq num cmd */
3775                                 if (megasas_sync_pd_seq_num(instance, true))
3776                                         instance->use_seqnum_jbod_fp = false;
3777                         } else
3778                                 instance->use_seqnum_jbod_fp = false;
3779
3780                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3781                         break;
3782                 }
3783
3784                 /*
3785                  * See if got an event notification
3786                  */
3787                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3788                         megasas_service_aen(instance, cmd);
3789                 else
3790                         megasas_complete_int_cmd(instance, cmd);
3791
3792                 break;
3793
3794         case MFI_CMD_ABORT:
3795                 /*
3796                  * Cmd issued to abort another cmd returned
3797                  */
3798                 megasas_complete_abort(instance, cmd);
3799                 break;
3800
3801         default:
3802                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3803                        hdr->cmd);
3804                 megasas_complete_int_cmd(instance, cmd);
3805                 break;
3806         }
3807 }
3808
3809 /**
3810  * megasas_issue_pending_cmds_again -   issue all pending cmds
3811  *                                      in FW again because of the fw reset
3812  * @instance:                           Adapter soft state
3813  */
3814 static inline void
3815 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3816 {
3817         struct megasas_cmd *cmd;
3818         struct list_head clist_local;
3819         union megasas_evt_class_locale class_locale;
3820         unsigned long flags;
3821         u32 seq_num;
3822
3823         INIT_LIST_HEAD(&clist_local);
3824         spin_lock_irqsave(&instance->hba_lock, flags);
3825         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3826         spin_unlock_irqrestore(&instance->hba_lock, flags);
3827
3828         while (!list_empty(&clist_local)) {
3829                 cmd = list_entry((&clist_local)->next,
3830                                         struct megasas_cmd, list);
3831                 list_del_init(&cmd->list);
3832
3833                 if (cmd->sync_cmd || cmd->scmd) {
3834                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3835                                 "detected to be pending while HBA reset\n",
3836                                         cmd, cmd->scmd, cmd->sync_cmd);
3837
3838                         cmd->retry_for_fw_reset++;
3839
3840                         if (cmd->retry_for_fw_reset == 3) {
3841                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3842                                         "was tried multiple times during reset."
3843                                         "Shutting down the HBA\n",
3844                                         cmd, cmd->scmd, cmd->sync_cmd);
3845                                 instance->instancet->disable_intr(instance);
3846                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3847                                 megaraid_sas_kill_hba(instance);
3848                                 return;
3849                         }
3850                 }
3851
3852                 if (cmd->sync_cmd == 1) {
3853                         if (cmd->scmd) {
3854                                 dev_notice(&instance->pdev->dev, "unexpected"
3855                                         "cmd attached to internal command!\n");
3856                         }
3857                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3858                                                 "on the internal reset queue,"
3859                                                 "issue it again.\n", cmd);
3860                         cmd->cmd_status_drv = DCMD_INIT;
3861                         instance->instancet->fire_cmd(instance,
3862                                                         cmd->frame_phys_addr,
3863                                                         0, instance->reg_set);
3864                 } else if (cmd->scmd) {
3865                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3866                         "detected on the internal queue, issue again.\n",
3867                         cmd, cmd->scmd->cmnd[0]);
3868
3869                         atomic_inc(&instance->fw_outstanding);
3870                         instance->instancet->fire_cmd(instance,
3871                                         cmd->frame_phys_addr,
3872                                         cmd->frame_count-1, instance->reg_set);
3873                 } else {
3874                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3875                                 "internal reset defer list while re-issue!!\n",
3876                                 cmd);
3877                 }
3878         }
3879
3880         if (instance->aen_cmd) {
3881                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3882                 megasas_return_cmd(instance, instance->aen_cmd);
3883
3884                 instance->aen_cmd = NULL;
3885         }
3886
3887         /*
3888          * Initiate AEN (Asynchronous Event Notification)
3889          */
3890         seq_num = instance->last_seq_num;
3891         class_locale.members.reserved = 0;
3892         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3893         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3894
3895         megasas_register_aen(instance, seq_num, class_locale.word);
3896 }
3897
3898 /*
3899  * Move the internal reset pending commands to a deferred queue.
3900  *
3901  * We move the commands pending at internal reset time to a
3902  * pending queue. This queue would be flushed after successful
3903  * completion of the internal reset sequence. if the internal reset
3904  * did not complete in time, the kernel reset handler would flush
3905  * these commands.
3906  */
3907 static void
3908 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3909 {
3910         struct megasas_cmd *cmd;
3911         int i;
3912         u16 max_cmd = instance->max_fw_cmds;
3913         u32 defer_index;
3914         unsigned long flags;
3915
3916         defer_index = 0;
3917         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3918         for (i = 0; i < max_cmd; i++) {
3919                 cmd = instance->cmd_list[i];
3920                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3921                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3922                                         "on the defer queue as internal\n",
3923                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3924
3925                         if (!list_empty(&cmd->list)) {
3926                                 dev_notice(&instance->pdev->dev, "ERROR while"
3927                                         " moving this cmd:%p, %d %p, it was"
3928                                         "discovered on some list?\n",
3929                                         cmd, cmd->sync_cmd, cmd->scmd);
3930
3931                                 list_del_init(&cmd->list);
3932                         }
3933                         defer_index++;
3934                         list_add_tail(&cmd->list,
3935                                 &instance->internal_reset_pending_q);
3936                 }
3937         }
3938         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3939 }
3940
3941
3942 static void
3943 process_fw_state_change_wq(struct work_struct *work)
3944 {
3945         struct megasas_instance *instance =
3946                 container_of(work, struct megasas_instance, work_init);
3947         u32 wait;
3948         unsigned long flags;
3949
3950         if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3951                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3952                            atomic_read(&instance->adprecovery));
3953                 return ;
3954         }
3955
3956         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3957                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3958                                         "state, restarting it...\n");
3959
3960                 instance->instancet->disable_intr(instance);
3961                 atomic_set(&instance->fw_outstanding, 0);
3962
3963                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3964                 instance->instancet->adp_reset(instance, instance->reg_set);
3965                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3966
3967                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3968                                         "initiating next stage...\n");
3969
3970                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3971                                         "state 2 starting...\n");
3972
3973                 /* waiting for about 20 second before start the second init */
3974                 for (wait = 0; wait < 30; wait++) {
3975                         msleep(1000);
3976                 }
3977
3978                 if (megasas_transition_to_ready(instance, 1)) {
3979                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3980
3981                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3982                         megaraid_sas_kill_hba(instance);
3983                         return ;
3984                 }
3985
3986                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3987                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3988                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3989                         ) {
3990                         *instance->consumer = *instance->producer;
3991                 } else {
3992                         *instance->consumer = 0;
3993                         *instance->producer = 0;
3994                 }
3995
3996                 megasas_issue_init_mfi(instance);
3997
3998                 spin_lock_irqsave(&instance->hba_lock, flags);
3999                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4000                 spin_unlock_irqrestore(&instance->hba_lock, flags);
4001                 instance->instancet->enable_intr(instance);
4002
4003                 megasas_issue_pending_cmds_again(instance);
4004                 instance->issuepend_done = 1;
4005         }
4006 }
4007
4008 /**
4009  * megasas_deplete_reply_queue -        Processes all completed commands
4010  * @instance:                           Adapter soft state
4011  * @alt_status:                         Alternate status to be returned to
4012  *                                      SCSI mid-layer instead of the status
4013  *                                      returned by the FW
4014  * Note: this must be called with hba lock held
4015  */
4016 static int
4017 megasas_deplete_reply_queue(struct megasas_instance *instance,
4018                                         u8 alt_status)
4019 {
4020         u32 mfiStatus;
4021         u32 fw_state;
4022
4023         if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4024                 return IRQ_HANDLED;
4025
4026         mfiStatus = instance->instancet->clear_intr(instance);
4027         if (mfiStatus == 0) {
4028                 /* Hardware may not set outbound_intr_status in MSI-X mode */
4029                 if (!instance->msix_vectors)
4030                         return IRQ_NONE;
4031         }
4032
4033         instance->mfiStatus = mfiStatus;
4034
4035         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4036                 fw_state = instance->instancet->read_fw_status_reg(
4037                                 instance) & MFI_STATE_MASK;
4038
4039                 if (fw_state != MFI_STATE_FAULT) {
4040                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
4041                                                 fw_state);
4042                 }
4043
4044                 if ((fw_state == MFI_STATE_FAULT) &&
4045                                 (instance->disableOnlineCtrlReset == 0)) {
4046                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
4047
4048                         if ((instance->pdev->device ==
4049                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
4050                                 (instance->pdev->device ==
4051                                         PCI_DEVICE_ID_DELL_PERC5) ||
4052                                 (instance->pdev->device ==
4053                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4054
4055                                 *instance->consumer =
4056                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4057                         }
4058
4059
4060                         instance->instancet->disable_intr(instance);
4061                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4062                         instance->issuepend_done = 0;
4063
4064                         atomic_set(&instance->fw_outstanding, 0);
4065                         megasas_internal_reset_defer_cmds(instance);
4066
4067                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4068                                         fw_state, atomic_read(&instance->adprecovery));
4069
4070                         schedule_work(&instance->work_init);
4071                         return IRQ_HANDLED;
4072
4073                 } else {
4074                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4075                                 fw_state, instance->disableOnlineCtrlReset);
4076                 }
4077         }
4078
4079         tasklet_schedule(&instance->isr_tasklet);
4080         return IRQ_HANDLED;
4081 }
4082
4083 /**
4084  * megasas_isr - isr entry point
4085  * @irq:        IRQ number
4086  * @devp:       IRQ context address
4087  */
4088 static irqreturn_t megasas_isr(int irq, void *devp)
4089 {
4090         struct megasas_irq_context *irq_context = devp;
4091         struct megasas_instance *instance = irq_context->instance;
4092         unsigned long flags;
4093         irqreturn_t rc;
4094
4095         if (atomic_read(&instance->fw_reset_no_pci_access))
4096                 return IRQ_HANDLED;
4097
4098         spin_lock_irqsave(&instance->hba_lock, flags);
4099         rc = megasas_deplete_reply_queue(instance, DID_OK);
4100         spin_unlock_irqrestore(&instance->hba_lock, flags);
4101
4102         return rc;
4103 }
4104
4105 /**
4106  * megasas_transition_to_ready -        Move the FW to READY state
4107  * @instance:                           Adapter soft state
4108  * @ocr:                                Adapter reset state
4109  *
4110  * During the initialization, FW passes can potentially be in any one of
4111  * several possible states. If the FW in operational, waiting-for-handshake
4112  * states, driver must take steps to bring it to ready state. Otherwise, it
4113  * has to wait for the ready state.
4114  */
4115 int
4116 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4117 {
4118         int i;
4119         u8 max_wait;
4120         u32 fw_state;
4121         u32 abs_state, curr_abs_state;
4122
4123         abs_state = instance->instancet->read_fw_status_reg(instance);
4124         fw_state = abs_state & MFI_STATE_MASK;
4125
4126         if (fw_state != MFI_STATE_READY)
4127                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4128                        " state\n");
4129
4130         while (fw_state != MFI_STATE_READY) {
4131
4132                 switch (fw_state) {
4133
4134                 case MFI_STATE_FAULT:
4135                         dev_printk(KERN_ERR, &instance->pdev->dev,
4136                                    "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4137                                    abs_state & MFI_STATE_FAULT_CODE,
4138                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4139                         if (ocr) {
4140                                 max_wait = MEGASAS_RESET_WAIT_TIME;
4141                                 break;
4142                         } else {
4143                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4144                                 megasas_dump_reg_set(instance->reg_set);
4145                                 return -ENODEV;
4146                         }
4147
4148                 case MFI_STATE_WAIT_HANDSHAKE:
4149                         /*
4150                          * Set the CLR bit in inbound doorbell
4151                          */
4152                         if ((instance->pdev->device ==
4153                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4154                                 (instance->pdev->device ==
4155                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4156                                 (instance->adapter_type != MFI_SERIES))
4157                                 writel(
4158                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4159                                   &instance->reg_set->doorbell);
4160                         else
4161                                 writel(
4162                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4163                                         &instance->reg_set->inbound_doorbell);
4164
4165                         max_wait = MEGASAS_RESET_WAIT_TIME;
4166                         break;
4167
4168                 case MFI_STATE_BOOT_MESSAGE_PENDING:
4169                         if ((instance->pdev->device ==
4170                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4171                                 (instance->pdev->device ==
4172                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4173                                 (instance->adapter_type != MFI_SERIES))
4174                                 writel(MFI_INIT_HOTPLUG,
4175                                        &instance->reg_set->doorbell);
4176                         else
4177                                 writel(MFI_INIT_HOTPLUG,
4178                                         &instance->reg_set->inbound_doorbell);
4179
4180                         max_wait = MEGASAS_RESET_WAIT_TIME;
4181                         break;
4182
4183                 case MFI_STATE_OPERATIONAL:
4184                         /*
4185                          * Bring it to READY state; assuming max wait 10 secs
4186                          */
4187                         instance->instancet->disable_intr(instance);
4188                         if ((instance->pdev->device ==
4189                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4190                                 (instance->pdev->device ==
4191                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
4192                                 (instance->adapter_type != MFI_SERIES)) {
4193                                 writel(MFI_RESET_FLAGS,
4194                                         &instance->reg_set->doorbell);
4195
4196                                 if (instance->adapter_type != MFI_SERIES) {
4197                                         for (i = 0; i < (10 * 1000); i += 20) {
4198                                                 if (megasas_readl(
4199                                                             instance,
4200                                                             &instance->
4201                                                             reg_set->
4202                                                             doorbell) & 1)
4203                                                         msleep(20);
4204                                                 else
4205                                                         break;
4206                                         }
4207                                 }
4208                         } else
4209                                 writel(MFI_RESET_FLAGS,
4210                                         &instance->reg_set->inbound_doorbell);
4211
4212                         max_wait = MEGASAS_RESET_WAIT_TIME;
4213                         break;
4214
4215                 case MFI_STATE_UNDEFINED:
4216                         /*
4217                          * This state should not last for more than 2 seconds
4218                          */
4219                         max_wait = MEGASAS_RESET_WAIT_TIME;
4220                         break;
4221
4222                 case MFI_STATE_BB_INIT:
4223                         max_wait = MEGASAS_RESET_WAIT_TIME;
4224                         break;
4225
4226                 case MFI_STATE_FW_INIT:
4227                         max_wait = MEGASAS_RESET_WAIT_TIME;
4228                         break;
4229
4230                 case MFI_STATE_FW_INIT_2:
4231                         max_wait = MEGASAS_RESET_WAIT_TIME;
4232                         break;
4233
4234                 case MFI_STATE_DEVICE_SCAN:
4235                         max_wait = MEGASAS_RESET_WAIT_TIME;
4236                         break;
4237
4238                 case MFI_STATE_FLUSH_CACHE:
4239                         max_wait = MEGASAS_RESET_WAIT_TIME;
4240                         break;
4241
4242                 default:
4243                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4244                                fw_state);
4245                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4246                         megasas_dump_reg_set(instance->reg_set);
4247                         return -ENODEV;
4248                 }
4249
4250                 /*
4251                  * The cur_state should not last for more than max_wait secs
4252                  */
4253                 for (i = 0; i < max_wait * 50; i++) {
4254                         curr_abs_state = instance->instancet->
4255                                 read_fw_status_reg(instance);
4256
4257                         if (abs_state == curr_abs_state) {
4258                                 msleep(20);
4259                         } else
4260                                 break;
4261                 }
4262
4263                 /*
4264                  * Return error if fw_state hasn't changed after max_wait
4265                  */
4266                 if (curr_abs_state == abs_state) {
4267                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4268                                "in %d secs\n", fw_state, max_wait);
4269                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4270                         megasas_dump_reg_set(instance->reg_set);
4271                         return -ENODEV;
4272                 }
4273
4274                 abs_state = curr_abs_state;
4275                 fw_state = curr_abs_state & MFI_STATE_MASK;
4276         }
4277         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4278
4279         return 0;
4280 }
4281
4282 /**
4283  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
4284  * @instance:                           Adapter soft state
4285  */
4286 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4287 {
4288         int i;
4289         u16 max_cmd = instance->max_mfi_cmds;
4290         struct megasas_cmd *cmd;
4291
4292         if (!instance->frame_dma_pool)
4293                 return;
4294
4295         /*
4296          * Return all frames to pool
4297          */
4298         for (i = 0; i < max_cmd; i++) {
4299
4300                 cmd = instance->cmd_list[i];
4301
4302                 if (cmd->frame)
4303                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
4304                                       cmd->frame_phys_addr);
4305
4306                 if (cmd->sense)
4307                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
4308                                       cmd->sense_phys_addr);
4309         }
4310
4311         /*
4312          * Now destroy the pool itself
4313          */
4314         dma_pool_destroy(instance->frame_dma_pool);
4315         dma_pool_destroy(instance->sense_dma_pool);
4316
4317         instance->frame_dma_pool = NULL;
4318         instance->sense_dma_pool = NULL;
4319 }
4320
4321 /**
4322  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
4323  * @instance:                   Adapter soft state
4324  *
4325  * Each command packet has an embedded DMA memory buffer that is used for
4326  * filling MFI frame and the SG list that immediately follows the frame. This
4327  * function creates those DMA memory buffers for each command packet by using
4328  * PCI pool facility.
4329  */
4330 static int megasas_create_frame_pool(struct megasas_instance *instance)
4331 {
4332         int i;
4333         u16 max_cmd;
4334         u32 frame_count;
4335         struct megasas_cmd *cmd;
4336
4337         max_cmd = instance->max_mfi_cmds;
4338
4339         /*
4340          * For MFI controllers.
4341          * max_num_sge = 60
4342          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4343          * Total 960 byte (15 MFI frame of 64 byte)
4344          *
4345          * Fusion adapter require only 3 extra frame.
4346          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4347          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4348          * Total 192 byte (3 MFI frame of 64 byte)
4349          */
4350         frame_count = (instance->adapter_type == MFI_SERIES) ?
4351                         (15 + 1) : (3 + 1);
4352         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4353         /*
4354          * Use DMA pool facility provided by PCI layer
4355          */
4356         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4357                                         &instance->pdev->dev,
4358                                         instance->mfi_frame_size, 256, 0);
4359
4360         if (!instance->frame_dma_pool) {
4361                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4362                 return -ENOMEM;
4363         }
4364
4365         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4366                                                    &instance->pdev->dev, 128,
4367                                                    4, 0);
4368
4369         if (!instance->sense_dma_pool) {
4370                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4371
4372                 dma_pool_destroy(instance->frame_dma_pool);
4373                 instance->frame_dma_pool = NULL;
4374
4375                 return -ENOMEM;
4376         }
4377
4378         /*
4379          * Allocate and attach a frame to each of the commands in cmd_list.
4380          * By making cmd->index as the context instead of the &cmd, we can
4381          * always use 32bit context regardless of the architecture
4382          */
4383         for (i = 0; i < max_cmd; i++) {
4384
4385                 cmd = instance->cmd_list[i];
4386
4387                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4388                                             GFP_KERNEL, &cmd->frame_phys_addr);
4389
4390                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4391                                             GFP_KERNEL, &cmd->sense_phys_addr);
4392
4393                 /*
4394                  * megasas_teardown_frame_pool() takes care of freeing
4395                  * whatever has been allocated
4396                  */
4397                 if (!cmd->frame || !cmd->sense) {
4398                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4399                         megasas_teardown_frame_pool(instance);
4400                         return -ENOMEM;
4401                 }
4402
4403                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4404                 cmd->frame->io.pad_0 = 0;
4405                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4406                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4407         }
4408
4409         return 0;
4410 }
4411
4412 /**
4413  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4414  * @instance:           Adapter soft state
4415  */
4416 void megasas_free_cmds(struct megasas_instance *instance)
4417 {
4418         int i;
4419
4420         /* First free the MFI frame pool */
4421         megasas_teardown_frame_pool(instance);
4422
4423         /* Free all the commands in the cmd_list */
4424         for (i = 0; i < instance->max_mfi_cmds; i++)
4425
4426                 kfree(instance->cmd_list[i]);
4427
4428         /* Free the cmd_list buffer itself */
4429         kfree(instance->cmd_list);
4430         instance->cmd_list = NULL;
4431
4432         INIT_LIST_HEAD(&instance->cmd_pool);
4433 }
4434
4435 /**
4436  * megasas_alloc_cmds - Allocates the command packets
4437  * @instance:           Adapter soft state
4438  *
4439  * Each command that is issued to the FW, whether IO commands from the OS or
4440  * internal commands like IOCTLs, are wrapped in local data structure called
4441  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4442  * the FW.
4443  *
4444  * Each frame has a 32-bit field called context (tag). This context is used
4445  * to get back the megasas_cmd from the frame when a frame gets completed in
4446  * the ISR. Typically the address of the megasas_cmd itself would be used as
4447  * the context. But we wanted to keep the differences between 32 and 64 bit
4448  * systems to the mininum. We always use 32 bit integers for the context. In
4449  * this driver, the 32 bit values are the indices into an array cmd_list.
4450  * This array is used only to look up the megasas_cmd given the context. The
4451  * free commands themselves are maintained in a linked list called cmd_pool.
4452  */
4453 int megasas_alloc_cmds(struct megasas_instance *instance)
4454 {
4455         int i;
4456         int j;
4457         u16 max_cmd;
4458         struct megasas_cmd *cmd;
4459
4460         max_cmd = instance->max_mfi_cmds;
4461
4462         /*
4463          * instance->cmd_list is an array of struct megasas_cmd pointers.
4464          * Allocate the dynamic array first and then allocate individual
4465          * commands.
4466          */
4467         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4468
4469         if (!instance->cmd_list) {
4470                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4471                 return -ENOMEM;
4472         }
4473
4474         for (i = 0; i < max_cmd; i++) {
4475                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4476                                                 GFP_KERNEL);
4477
4478                 if (!instance->cmd_list[i]) {
4479
4480                         for (j = 0; j < i; j++)
4481                                 kfree(instance->cmd_list[j]);
4482
4483                         kfree(instance->cmd_list);
4484                         instance->cmd_list = NULL;
4485
4486                         return -ENOMEM;
4487                 }
4488         }
4489
4490         for (i = 0; i < max_cmd; i++) {
4491                 cmd = instance->cmd_list[i];
4492                 memset(cmd, 0, sizeof(struct megasas_cmd));
4493                 cmd->index = i;
4494                 cmd->scmd = NULL;
4495                 cmd->instance = instance;
4496
4497                 list_add_tail(&cmd->list, &instance->cmd_pool);
4498         }
4499
4500         /*
4501          * Create a frame pool and assign one frame to each cmd
4502          */
4503         if (megasas_create_frame_pool(instance)) {
4504                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4505                 megasas_free_cmds(instance);
4506                 return -ENOMEM;
4507         }
4508
4509         return 0;
4510 }
4511
4512 /*
4513  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4514  * @instance:                           Adapter soft state
4515  *
4516  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4517  * or FW is not under OCR.
4518  */
4519 inline int
4520 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4521
4522         if (instance->adapter_type == MFI_SERIES)
4523                 return KILL_ADAPTER;
4524         else if (instance->unload ||
4525                         test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4526                                  &instance->reset_flags))
4527                 return IGNORE_TIMEOUT;
4528         else
4529                 return INITIATE_OCR;
4530 }
4531
4532 static void
4533 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4534 {
4535         int ret;
4536         struct megasas_cmd *cmd;
4537         struct megasas_dcmd_frame *dcmd;
4538
4539         struct MR_PRIV_DEVICE *mr_device_priv_data;
4540         u16 device_id = 0;
4541
4542         device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4543         cmd = megasas_get_cmd(instance);
4544
4545         if (!cmd) {
4546                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4547                 return;
4548         }
4549
4550         dcmd = &cmd->frame->dcmd;
4551
4552         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4553         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4554
4555         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4556         dcmd->cmd = MFI_CMD_DCMD;
4557         dcmd->cmd_status = 0xFF;
4558         dcmd->sge_count = 1;
4559         dcmd->flags = MFI_FRAME_DIR_READ;
4560         dcmd->timeout = 0;
4561         dcmd->pad_0 = 0;
4562         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4563         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4564
4565         megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4566                                  sizeof(struct MR_PD_INFO));
4567
4568         if ((instance->adapter_type != MFI_SERIES) &&
4569             !instance->mask_interrupts)
4570                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4571         else
4572                 ret = megasas_issue_polled(instance, cmd);
4573
4574         switch (ret) {
4575         case DCMD_SUCCESS:
4576                 mr_device_priv_data = sdev->hostdata;
4577                 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4578                 mr_device_priv_data->interface_type =
4579                                 instance->pd_info->state.ddf.pdType.intf;
4580                 break;
4581
4582         case DCMD_TIMEOUT:
4583
4584                 switch (dcmd_timeout_ocr_possible(instance)) {
4585                 case INITIATE_OCR:
4586                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4587                         mutex_unlock(&instance->reset_mutex);
4588                         megasas_reset_fusion(instance->host,
4589                                 MFI_IO_TIMEOUT_OCR);
4590                         mutex_lock(&instance->reset_mutex);
4591                         break;
4592                 case KILL_ADAPTER:
4593                         megaraid_sas_kill_hba(instance);
4594                         break;
4595                 case IGNORE_TIMEOUT:
4596                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4597                                 __func__, __LINE__);
4598                         break;
4599                 }
4600
4601                 break;
4602         }
4603
4604         if (ret != DCMD_TIMEOUT)
4605                 megasas_return_cmd(instance, cmd);
4606
4607         return;
4608 }
4609 /*
4610  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4611  * @instance:                           Adapter soft state
4612  * @pd_list:                            pd_list structure
4613  *
4614  * Issues an internal command (DCMD) to get the FW's controller PD
4615  * list structure.  This information is mainly used to find out SYSTEM
4616  * supported by the FW.
4617  */
4618 static int
4619 megasas_get_pd_list(struct megasas_instance *instance)
4620 {
4621         int ret = 0, pd_index = 0;
4622         struct megasas_cmd *cmd;
4623         struct megasas_dcmd_frame *dcmd;
4624         struct MR_PD_LIST *ci;
4625         struct MR_PD_ADDRESS *pd_addr;
4626
4627         if (instance->pd_list_not_supported) {
4628                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4629                 "not supported by firmware\n");
4630                 return ret;
4631         }
4632
4633         ci = instance->pd_list_buf;
4634
4635         cmd = megasas_get_cmd(instance);
4636
4637         if (!cmd) {
4638                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4639                 return -ENOMEM;
4640         }
4641
4642         dcmd = &cmd->frame->dcmd;
4643
4644         memset(ci, 0, sizeof(*ci));
4645         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4646
4647         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4648         dcmd->mbox.b[1] = 0;
4649         dcmd->cmd = MFI_CMD_DCMD;
4650         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4651         dcmd->sge_count = 1;
4652         dcmd->flags = MFI_FRAME_DIR_READ;
4653         dcmd->timeout = 0;
4654         dcmd->pad_0 = 0;
4655         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4656         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4657
4658         megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4659                                  (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4660
4661         if ((instance->adapter_type != MFI_SERIES) &&
4662             !instance->mask_interrupts)
4663                 ret = megasas_issue_blocked_cmd(instance, cmd,
4664                         MFI_IO_TIMEOUT_SECS);
4665         else
4666                 ret = megasas_issue_polled(instance, cmd);
4667
4668         switch (ret) {
4669         case DCMD_FAILED:
4670                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4671                         "failed/not supported by firmware\n");
4672
4673                 if (instance->adapter_type != MFI_SERIES)
4674                         megaraid_sas_kill_hba(instance);
4675                 else
4676                         instance->pd_list_not_supported = 1;
4677                 break;
4678         case DCMD_TIMEOUT:
4679
4680                 switch (dcmd_timeout_ocr_possible(instance)) {
4681                 case INITIATE_OCR:
4682                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4683                         /*
4684                          * DCMD failed from AEN path.
4685                          * AEN path already hold reset_mutex to avoid PCI access
4686                          * while OCR is in progress.
4687                          */
4688                         mutex_unlock(&instance->reset_mutex);
4689                         megasas_reset_fusion(instance->host,
4690                                                 MFI_IO_TIMEOUT_OCR);
4691                         mutex_lock(&instance->reset_mutex);
4692                         break;
4693                 case KILL_ADAPTER:
4694                         megaraid_sas_kill_hba(instance);
4695                         break;
4696                 case IGNORE_TIMEOUT:
4697                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4698                                 __func__, __LINE__);
4699                         break;
4700                 }
4701
4702                 break;
4703
4704         case DCMD_SUCCESS:
4705                 pd_addr = ci->addr;
4706                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4707                         dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4708                                  __func__, le32_to_cpu(ci->count));
4709
4710                 if ((le32_to_cpu(ci->count) >
4711                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4712                         break;
4713
4714                 memset(instance->local_pd_list, 0,
4715                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4716
4717                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4718                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4719                                         le16_to_cpu(pd_addr->deviceId);
4720                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4721                                         pd_addr->scsiDevType;
4722                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4723                                         MR_PD_STATE_SYSTEM;
4724                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4725                                 dev_info(&instance->pdev->dev,
4726                                          "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4727                                          pd_index, le16_to_cpu(pd_addr->deviceId),
4728                                          pd_addr->scsiDevType);
4729                         pd_addr++;
4730                 }
4731
4732                 memcpy(instance->pd_list, instance->local_pd_list,
4733                         sizeof(instance->pd_list));
4734                 break;
4735
4736         }
4737
4738         if (ret != DCMD_TIMEOUT)
4739                 megasas_return_cmd(instance, cmd);
4740
4741         return ret;
4742 }
4743
4744 /*
4745  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4746  * @instance:                           Adapter soft state
4747  * @ld_list:                            ld_list structure
4748  *
4749  * Issues an internal command (DCMD) to get the FW's controller PD
4750  * list structure.  This information is mainly used to find out SYSTEM
4751  * supported by the FW.
4752  */
4753 static int
4754 megasas_get_ld_list(struct megasas_instance *instance)
4755 {
4756         int ret = 0, ld_index = 0, ids = 0;
4757         struct megasas_cmd *cmd;
4758         struct megasas_dcmd_frame *dcmd;
4759         struct MR_LD_LIST *ci;
4760         dma_addr_t ci_h = 0;
4761         u32 ld_count;
4762
4763         ci = instance->ld_list_buf;
4764         ci_h = instance->ld_list_buf_h;
4765
4766         cmd = megasas_get_cmd(instance);
4767
4768         if (!cmd) {
4769                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4770                 return -ENOMEM;
4771         }
4772
4773         dcmd = &cmd->frame->dcmd;
4774
4775         memset(ci, 0, sizeof(*ci));
4776         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4777
4778         if (instance->supportmax256vd)
4779                 dcmd->mbox.b[0] = 1;
4780         dcmd->cmd = MFI_CMD_DCMD;
4781         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4782         dcmd->sge_count = 1;
4783         dcmd->flags = MFI_FRAME_DIR_READ;
4784         dcmd->timeout = 0;
4785         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4786         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4787         dcmd->pad_0  = 0;
4788
4789         megasas_set_dma_settings(instance, dcmd, ci_h,
4790                                  sizeof(struct MR_LD_LIST));
4791
4792         if ((instance->adapter_type != MFI_SERIES) &&
4793             !instance->mask_interrupts)
4794                 ret = megasas_issue_blocked_cmd(instance, cmd,
4795                         MFI_IO_TIMEOUT_SECS);
4796         else
4797                 ret = megasas_issue_polled(instance, cmd);
4798
4799         ld_count = le32_to_cpu(ci->ldCount);
4800
4801         switch (ret) {
4802         case DCMD_FAILED:
4803                 megaraid_sas_kill_hba(instance);
4804                 break;
4805         case DCMD_TIMEOUT:
4806
4807                 switch (dcmd_timeout_ocr_possible(instance)) {
4808                 case INITIATE_OCR:
4809                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4810                         /*
4811                          * DCMD failed from AEN path.
4812                          * AEN path already hold reset_mutex to avoid PCI access
4813                          * while OCR is in progress.
4814                          */
4815                         mutex_unlock(&instance->reset_mutex);
4816                         megasas_reset_fusion(instance->host,
4817                                                 MFI_IO_TIMEOUT_OCR);
4818                         mutex_lock(&instance->reset_mutex);
4819                         break;
4820                 case KILL_ADAPTER:
4821                         megaraid_sas_kill_hba(instance);
4822                         break;
4823                 case IGNORE_TIMEOUT:
4824                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4825                                 __func__, __LINE__);
4826                         break;
4827                 }
4828
4829                 break;
4830
4831         case DCMD_SUCCESS:
4832                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4833                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4834                                  __func__, ld_count);
4835
4836                 if (ld_count > instance->fw_supported_vd_count)
4837                         break;
4838
4839                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4840
4841                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4842                         if (ci->ldList[ld_index].state != 0) {
4843                                 ids = ci->ldList[ld_index].ref.targetId;
4844                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4845                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4846                                         dev_info(&instance->pdev->dev,
4847                                                  "LD%d: targetID: 0x%03x\n",
4848                                                  ld_index, ids);
4849                         }
4850                 }
4851
4852                 break;
4853         }
4854
4855         if (ret != DCMD_TIMEOUT)
4856                 megasas_return_cmd(instance, cmd);
4857
4858         return ret;
4859 }
4860
4861 /**
4862  * megasas_ld_list_query -      Returns FW's ld_list structure
4863  * @instance:                           Adapter soft state
4864  * @query_type:                         ld_list structure type
4865  *
4866  * Issues an internal command (DCMD) to get the FW's controller PD
4867  * list structure.  This information is mainly used to find out SYSTEM
4868  * supported by the FW.
4869  */
4870 static int
4871 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4872 {
4873         int ret = 0, ld_index = 0, ids = 0;
4874         struct megasas_cmd *cmd;
4875         struct megasas_dcmd_frame *dcmd;
4876         struct MR_LD_TARGETID_LIST *ci;
4877         dma_addr_t ci_h = 0;
4878         u32 tgtid_count;
4879
4880         ci = instance->ld_targetid_list_buf;
4881         ci_h = instance->ld_targetid_list_buf_h;
4882
4883         cmd = megasas_get_cmd(instance);
4884
4885         if (!cmd) {
4886                 dev_warn(&instance->pdev->dev,
4887                          "megasas_ld_list_query: Failed to get cmd\n");
4888                 return -ENOMEM;
4889         }
4890
4891         dcmd = &cmd->frame->dcmd;
4892
4893         memset(ci, 0, sizeof(*ci));
4894         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4895
4896         dcmd->mbox.b[0] = query_type;
4897         if (instance->supportmax256vd)
4898                 dcmd->mbox.b[2] = 1;
4899
4900         dcmd->cmd = MFI_CMD_DCMD;
4901         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4902         dcmd->sge_count = 1;
4903         dcmd->flags = MFI_FRAME_DIR_READ;
4904         dcmd->timeout = 0;
4905         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4906         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4907         dcmd->pad_0  = 0;
4908
4909         megasas_set_dma_settings(instance, dcmd, ci_h,
4910                                  sizeof(struct MR_LD_TARGETID_LIST));
4911
4912         if ((instance->adapter_type != MFI_SERIES) &&
4913             !instance->mask_interrupts)
4914                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4915         else
4916                 ret = megasas_issue_polled(instance, cmd);
4917
4918         switch (ret) {
4919         case DCMD_FAILED:
4920                 dev_info(&instance->pdev->dev,
4921                         "DCMD not supported by firmware - %s %d\n",
4922                                 __func__, __LINE__);
4923                 ret = megasas_get_ld_list(instance);
4924                 break;
4925         case DCMD_TIMEOUT:
4926                 switch (dcmd_timeout_ocr_possible(instance)) {
4927                 case INITIATE_OCR:
4928                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4929                         /*
4930                          * DCMD failed from AEN path.
4931                          * AEN path already hold reset_mutex to avoid PCI access
4932                          * while OCR is in progress.
4933                          */
4934                         mutex_unlock(&instance->reset_mutex);
4935                         megasas_reset_fusion(instance->host,
4936                                                 MFI_IO_TIMEOUT_OCR);
4937                         mutex_lock(&instance->reset_mutex);
4938                         break;
4939                 case KILL_ADAPTER:
4940                         megaraid_sas_kill_hba(instance);
4941                         break;
4942                 case IGNORE_TIMEOUT:
4943                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4944                                 __func__, __LINE__);
4945                         break;
4946                 }
4947
4948                 break;
4949         case DCMD_SUCCESS:
4950                 tgtid_count = le32_to_cpu(ci->count);
4951
4952                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4953                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4954                                  __func__, tgtid_count);
4955
4956                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4957                         break;
4958
4959                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4960                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4961                         ids = ci->targetId[ld_index];
4962                         instance->ld_ids[ids] = ci->targetId[ld_index];
4963                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4964                                 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4965                                          ld_index, ci->targetId[ld_index]);
4966                 }
4967
4968                 break;
4969         }
4970
4971         if (ret != DCMD_TIMEOUT)
4972                 megasas_return_cmd(instance, cmd);
4973
4974         return ret;
4975 }
4976
4977 /**
4978  * megasas_host_device_list_query
4979  * dcmd.opcode            - MR_DCMD_CTRL_DEVICE_LIST_GET
4980  * dcmd.mbox              - reserved
4981  * dcmd.sge IN            - ptr to return MR_HOST_DEVICE_LIST structure
4982  * Desc:    This DCMD will return the combined device list
4983  * Status:  MFI_STAT_OK - List returned successfully
4984  *          MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4985  *                                 disabled
4986  * @instance:                   Adapter soft state
4987  * @is_probe:                   Driver probe check
4988  * Return:                      0 if DCMD succeeded
4989  *                               non-zero if failed
4990  */
4991 static int
4992 megasas_host_device_list_query(struct megasas_instance *instance,
4993                                bool is_probe)
4994 {
4995         int ret, i, target_id;
4996         struct megasas_cmd *cmd;
4997         struct megasas_dcmd_frame *dcmd;
4998         struct MR_HOST_DEVICE_LIST *ci;
4999         u32 count;
5000         dma_addr_t ci_h;
5001
5002         ci = instance->host_device_list_buf;
5003         ci_h = instance->host_device_list_buf_h;
5004
5005         cmd = megasas_get_cmd(instance);
5006
5007         if (!cmd) {
5008                 dev_warn(&instance->pdev->dev,
5009                          "%s: failed to get cmd\n",
5010                          __func__);
5011                 return -ENOMEM;
5012         }
5013
5014         dcmd = &cmd->frame->dcmd;
5015
5016         memset(ci, 0, sizeof(*ci));
5017         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5018
5019         dcmd->mbox.b[0] = is_probe ? 0 : 1;
5020         dcmd->cmd = MFI_CMD_DCMD;
5021         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5022         dcmd->sge_count = 1;
5023         dcmd->flags = MFI_FRAME_DIR_READ;
5024         dcmd->timeout = 0;
5025         dcmd->pad_0 = 0;
5026         dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5027         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5028
5029         megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5030
5031         if (!instance->mask_interrupts) {
5032                 ret = megasas_issue_blocked_cmd(instance, cmd,
5033                                                 MFI_IO_TIMEOUT_SECS);
5034         } else {
5035                 ret = megasas_issue_polled(instance, cmd);
5036                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5037         }
5038
5039         switch (ret) {
5040         case DCMD_SUCCESS:
5041                 /* Fill the internal pd_list and ld_ids array based on
5042                  * targetIds returned by FW
5043                  */
5044                 count = le32_to_cpu(ci->count);
5045
5046                 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5047                         break;
5048
5049                 if (megasas_dbg_lvl & LD_PD_DEBUG)
5050                         dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5051                                  __func__, count);
5052
5053                 memset(instance->local_pd_list, 0,
5054                        MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5055                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5056                 for (i = 0; i < count; i++) {
5057                         target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5058                         if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5059                                 instance->local_pd_list[target_id].tid = target_id;
5060                                 instance->local_pd_list[target_id].driveType =
5061                                                 ci->host_device_list[i].scsi_type;
5062                                 instance->local_pd_list[target_id].driveState =
5063                                                 MR_PD_STATE_SYSTEM;
5064                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
5065                                         dev_info(&instance->pdev->dev,
5066                                                  "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5067                                                  i, target_id, ci->host_device_list[i].scsi_type);
5068                         } else {
5069                                 instance->ld_ids[target_id] = target_id;
5070                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
5071                                         dev_info(&instance->pdev->dev,
5072                                                  "Device %d: LD targetID: 0x%03x\n",
5073                                                  i, target_id);
5074                         }
5075                 }
5076
5077                 memcpy(instance->pd_list, instance->local_pd_list,
5078                        sizeof(instance->pd_list));
5079                 break;
5080
5081         case DCMD_TIMEOUT:
5082                 switch (dcmd_timeout_ocr_possible(instance)) {
5083                 case INITIATE_OCR:
5084                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5085                         mutex_unlock(&instance->reset_mutex);
5086                         megasas_reset_fusion(instance->host,
5087                                 MFI_IO_TIMEOUT_OCR);
5088                         mutex_lock(&instance->reset_mutex);
5089                         break;
5090                 case KILL_ADAPTER:
5091                         megaraid_sas_kill_hba(instance);
5092                         break;
5093                 case IGNORE_TIMEOUT:
5094                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5095                                  __func__, __LINE__);
5096                         break;
5097                 }
5098                 break;
5099         case DCMD_FAILED:
5100                 dev_err(&instance->pdev->dev,
5101                         "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5102                         __func__);
5103                 break;
5104         }
5105
5106         if (ret != DCMD_TIMEOUT)
5107                 megasas_return_cmd(instance, cmd);
5108
5109         return ret;
5110 }
5111
5112 /*
5113  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5114  * instance                      : Controller's instance
5115 */
5116 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5117 {
5118         struct fusion_context *fusion;
5119         u32 ventura_map_sz = 0;
5120
5121         fusion = instance->ctrl_context;
5122         /* For MFI based controllers return dummy success */
5123         if (!fusion)
5124                 return;
5125
5126         instance->supportmax256vd =
5127                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5128         /* Below is additional check to address future FW enhancement */
5129         if (instance->ctrl_info_buf->max_lds > 64)
5130                 instance->supportmax256vd = 1;
5131
5132         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5133                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
5134         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5135                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
5136         if (instance->supportmax256vd) {
5137                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5138                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5139         } else {
5140                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5141                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5142         }
5143
5144         dev_info(&instance->pdev->dev,
5145                 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5146                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5147                 instance->ctrl_info_buf->max_lds);
5148
5149         if (instance->max_raid_mapsize) {
5150                 ventura_map_sz = instance->max_raid_mapsize *
5151                                                 MR_MIN_MAP_SIZE; /* 64k */
5152                 fusion->current_map_sz = ventura_map_sz;
5153                 fusion->max_map_sz = ventura_map_sz;
5154         } else {
5155                 fusion->old_map_sz =
5156                         struct_size((struct MR_FW_RAID_MAP *)0, ldSpanMap,
5157                                     instance->fw_supported_vd_count);
5158                 fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
5159
5160                 fusion->max_map_sz =
5161                         max(fusion->old_map_sz, fusion->new_map_sz);
5162
5163                 if (instance->supportmax256vd)
5164                         fusion->current_map_sz = fusion->new_map_sz;
5165                 else
5166                         fusion->current_map_sz = fusion->old_map_sz;
5167         }
5168         /* irrespective of FW raid maps, driver raid map is constant */
5169         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5170 }
5171
5172 /*
5173  * dcmd.opcode                - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5174  * dcmd.hdr.length            - number of bytes to read
5175  * dcmd.sge                   - Ptr to MR_SNAPDUMP_PROPERTIES
5176  * Desc:                         Fill in snapdump properties
5177  * Status:                       MFI_STAT_OK- Command successful
5178  */
5179 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5180 {
5181         int ret = 0;
5182         struct megasas_cmd *cmd;
5183         struct megasas_dcmd_frame *dcmd;
5184         struct MR_SNAPDUMP_PROPERTIES *ci;
5185         dma_addr_t ci_h = 0;
5186
5187         ci = instance->snapdump_prop;
5188         ci_h = instance->snapdump_prop_h;
5189
5190         if (!ci)
5191                 return;
5192
5193         cmd = megasas_get_cmd(instance);
5194
5195         if (!cmd) {
5196                 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5197                 return;
5198         }
5199
5200         dcmd = &cmd->frame->dcmd;
5201
5202         memset(ci, 0, sizeof(*ci));
5203         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5204
5205         dcmd->cmd = MFI_CMD_DCMD;
5206         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5207         dcmd->sge_count = 1;
5208         dcmd->flags = MFI_FRAME_DIR_READ;
5209         dcmd->timeout = 0;
5210         dcmd->pad_0 = 0;
5211         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5212         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5213
5214         megasas_set_dma_settings(instance, dcmd, ci_h,
5215                                  sizeof(struct MR_SNAPDUMP_PROPERTIES));
5216
5217         if (!instance->mask_interrupts) {
5218                 ret = megasas_issue_blocked_cmd(instance, cmd,
5219                                                 MFI_IO_TIMEOUT_SECS);
5220         } else {
5221                 ret = megasas_issue_polled(instance, cmd);
5222                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5223         }
5224
5225         switch (ret) {
5226         case DCMD_SUCCESS:
5227                 instance->snapdump_wait_time =
5228                         min_t(u8, ci->trigger_min_num_sec_before_ocr,
5229                                 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5230                 break;
5231
5232         case DCMD_TIMEOUT:
5233                 switch (dcmd_timeout_ocr_possible(instance)) {
5234                 case INITIATE_OCR:
5235                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5236                         mutex_unlock(&instance->reset_mutex);
5237                         megasas_reset_fusion(instance->host,
5238                                 MFI_IO_TIMEOUT_OCR);
5239                         mutex_lock(&instance->reset_mutex);
5240                         break;
5241                 case KILL_ADAPTER:
5242                         megaraid_sas_kill_hba(instance);
5243                         break;
5244                 case IGNORE_TIMEOUT:
5245                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5246                                 __func__, __LINE__);
5247                         break;
5248                 }
5249         }
5250
5251         if (ret != DCMD_TIMEOUT)
5252                 megasas_return_cmd(instance, cmd);
5253 }
5254
5255 /**
5256  * megasas_get_ctrl_info -      Returns FW's controller structure
5257  * @instance:                           Adapter soft state
5258  *
5259  * Issues an internal command (DCMD) to get the FW's controller structure.
5260  * This information is mainly used to find out the maximum IO transfer per
5261  * command supported by the FW.
5262  */
5263 int
5264 megasas_get_ctrl_info(struct megasas_instance *instance)
5265 {
5266         int ret = 0;
5267         struct megasas_cmd *cmd;
5268         struct megasas_dcmd_frame *dcmd;
5269         struct megasas_ctrl_info *ci;
5270         dma_addr_t ci_h = 0;
5271
5272         ci = instance->ctrl_info_buf;
5273         ci_h = instance->ctrl_info_buf_h;
5274
5275         cmd = megasas_get_cmd(instance);
5276
5277         if (!cmd) {
5278                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5279                 return -ENOMEM;
5280         }
5281
5282         dcmd = &cmd->frame->dcmd;
5283
5284         memset(ci, 0, sizeof(*ci));
5285         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5286
5287         dcmd->cmd = MFI_CMD_DCMD;
5288         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5289         dcmd->sge_count = 1;
5290         dcmd->flags = MFI_FRAME_DIR_READ;
5291         dcmd->timeout = 0;
5292         dcmd->pad_0 = 0;
5293         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5294         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5295         dcmd->mbox.b[0] = 1;
5296
5297         megasas_set_dma_settings(instance, dcmd, ci_h,
5298                                  sizeof(struct megasas_ctrl_info));
5299
5300         if ((instance->adapter_type != MFI_SERIES) &&
5301             !instance->mask_interrupts) {
5302                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5303         } else {
5304                 ret = megasas_issue_polled(instance, cmd);
5305                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5306         }
5307
5308         switch (ret) {
5309         case DCMD_SUCCESS:
5310                 /* Save required controller information in
5311                  * CPU endianness format.
5312                  */
5313                 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5314                 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5315                 le32_to_cpus((u32 *)&ci->adapterOperations2);
5316                 le32_to_cpus((u32 *)&ci->adapterOperations3);
5317                 le16_to_cpus((u16 *)&ci->adapter_operations4);
5318                 le32_to_cpus((u32 *)&ci->adapter_operations5);
5319
5320                 /* Update the latest Ext VD info.
5321                  * From Init path, store current firmware details.
5322                  * From OCR path, detect any firmware properties changes.
5323                  * in case of Firmware upgrade without system reboot.
5324                  */
5325                 megasas_update_ext_vd_details(instance);
5326                 instance->support_seqnum_jbod_fp =
5327                         ci->adapterOperations3.useSeqNumJbodFP;
5328                 instance->support_morethan256jbod =
5329                         ci->adapter_operations4.support_pd_map_target_id;
5330                 instance->support_nvme_passthru =
5331                         ci->adapter_operations4.support_nvme_passthru;
5332                 instance->support_pci_lane_margining =
5333                         ci->adapter_operations5.support_pci_lane_margining;
5334                 instance->task_abort_tmo = ci->TaskAbortTO;
5335                 instance->max_reset_tmo = ci->MaxResetTO;
5336
5337                 /*Check whether controller is iMR or MR */
5338                 instance->is_imr = (ci->memory_size ? 0 : 1);
5339
5340                 instance->snapdump_wait_time =
5341                         (ci->properties.on_off_properties2.enable_snap_dump ?
5342                          MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5343
5344                 instance->enable_fw_dev_list =
5345                         ci->properties.on_off_properties2.enable_fw_dev_list;
5346
5347                 dev_info(&instance->pdev->dev,
5348                         "controller type\t: %s(%dMB)\n",
5349                         instance->is_imr ? "iMR" : "MR",
5350                         le16_to_cpu(ci->memory_size));
5351
5352                 instance->disableOnlineCtrlReset =
5353                         ci->properties.OnOffProperties.disableOnlineCtrlReset;
5354                 instance->secure_jbod_support =
5355                         ci->adapterOperations3.supportSecurityonJBOD;
5356                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5357                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5358                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5359                         instance->secure_jbod_support ? "Yes" : "No");
5360                 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5361                          instance->support_nvme_passthru ? "Yes" : "No");
5362                 dev_info(&instance->pdev->dev,
5363                          "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5364                          instance->task_abort_tmo, instance->max_reset_tmo);
5365                 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5366                          instance->support_seqnum_jbod_fp ? "Yes" : "No");
5367                 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5368                          instance->support_pci_lane_margining ? "Yes" : "No");
5369
5370                 break;
5371
5372         case DCMD_TIMEOUT:
5373                 switch (dcmd_timeout_ocr_possible(instance)) {
5374                 case INITIATE_OCR:
5375                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5376                         mutex_unlock(&instance->reset_mutex);
5377                         megasas_reset_fusion(instance->host,
5378                                 MFI_IO_TIMEOUT_OCR);
5379                         mutex_lock(&instance->reset_mutex);
5380                         break;
5381                 case KILL_ADAPTER:
5382                         megaraid_sas_kill_hba(instance);
5383                         break;
5384                 case IGNORE_TIMEOUT:
5385                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5386                                 __func__, __LINE__);
5387                         break;
5388                 }
5389                 break;
5390         case DCMD_FAILED:
5391                 megaraid_sas_kill_hba(instance);
5392                 break;
5393
5394         }
5395
5396         if (ret != DCMD_TIMEOUT)
5397                 megasas_return_cmd(instance, cmd);
5398
5399         return ret;
5400 }
5401
5402 /*
5403  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
5404  *                                      to firmware
5405  *
5406  * @instance:                           Adapter soft state
5407  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
5408                                         MR_CRASH_BUF_TURN_OFF = 0
5409                                         MR_CRASH_BUF_TURN_ON = 1
5410  * @return 0 on success non-zero on failure.
5411  * Issues an internal command (DCMD) to set parameters for crash dump feature.
5412  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5413  * that driver supports crash dump feature. This DCMD will be sent only if
5414  * crash dump feature is supported by the FW.
5415  *
5416  */
5417 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5418         u8 crash_buf_state)
5419 {
5420         int ret = 0;
5421         struct megasas_cmd *cmd;
5422         struct megasas_dcmd_frame *dcmd;
5423
5424         cmd = megasas_get_cmd(instance);
5425
5426         if (!cmd) {
5427                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5428                 return -ENOMEM;
5429         }
5430
5431
5432         dcmd = &cmd->frame->dcmd;
5433
5434         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5435         dcmd->mbox.b[0] = crash_buf_state;
5436         dcmd->cmd = MFI_CMD_DCMD;
5437         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5438         dcmd->sge_count = 1;
5439         dcmd->flags = MFI_FRAME_DIR_NONE;
5440         dcmd->timeout = 0;
5441         dcmd->pad_0 = 0;
5442         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5443         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5444
5445         megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5446                                  CRASH_DMA_BUF_SIZE);
5447
5448         if ((instance->adapter_type != MFI_SERIES) &&
5449             !instance->mask_interrupts)
5450                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5451         else
5452                 ret = megasas_issue_polled(instance, cmd);
5453
5454         if (ret == DCMD_TIMEOUT) {
5455                 switch (dcmd_timeout_ocr_possible(instance)) {
5456                 case INITIATE_OCR:
5457                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5458                         megasas_reset_fusion(instance->host,
5459                                         MFI_IO_TIMEOUT_OCR);
5460                         break;
5461                 case KILL_ADAPTER:
5462                         megaraid_sas_kill_hba(instance);
5463                         break;
5464                 case IGNORE_TIMEOUT:
5465                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5466                                 __func__, __LINE__);
5467                         break;
5468                 }
5469         } else
5470                 megasas_return_cmd(instance, cmd);
5471
5472         return ret;
5473 }
5474
5475 /**
5476  * megasas_issue_init_mfi -     Initializes the FW
5477  * @instance:           Adapter soft state
5478  *
5479  * Issues the INIT MFI cmd
5480  */
5481 static int
5482 megasas_issue_init_mfi(struct megasas_instance *instance)
5483 {
5484         __le32 context;
5485         struct megasas_cmd *cmd;
5486         struct megasas_init_frame *init_frame;
5487         struct megasas_init_queue_info *initq_info;
5488         dma_addr_t init_frame_h;
5489         dma_addr_t initq_info_h;
5490
5491         /*
5492          * Prepare a init frame. Note the init frame points to queue info
5493          * structure. Each frame has SGL allocated after first 64 bytes. For
5494          * this frame - since we don't need any SGL - we use SGL's space as
5495          * queue info structure
5496          *
5497          * We will not get a NULL command below. We just created the pool.
5498          */
5499         cmd = megasas_get_cmd(instance);
5500
5501         init_frame = (struct megasas_init_frame *)cmd->frame;
5502         initq_info = (struct megasas_init_queue_info *)
5503                 ((unsigned long)init_frame + 64);
5504
5505         init_frame_h = cmd->frame_phys_addr;
5506         initq_info_h = init_frame_h + 64;
5507
5508         context = init_frame->context;
5509         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5510         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5511         init_frame->context = context;
5512
5513         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5514         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5515
5516         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5517         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5518
5519         init_frame->cmd = MFI_CMD_INIT;
5520         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5521         init_frame->queue_info_new_phys_addr_lo =
5522                 cpu_to_le32(lower_32_bits(initq_info_h));
5523         init_frame->queue_info_new_phys_addr_hi =
5524                 cpu_to_le32(upper_32_bits(initq_info_h));
5525
5526         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5527
5528         /*
5529          * disable the intr before firing the init frame to FW
5530          */
5531         instance->instancet->disable_intr(instance);
5532
5533         /*
5534          * Issue the init frame in polled mode
5535          */
5536
5537         if (megasas_issue_polled(instance, cmd)) {
5538                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5539                 megasas_return_cmd(instance, cmd);
5540                 goto fail_fw_init;
5541         }
5542
5543         megasas_return_cmd(instance, cmd);
5544
5545         return 0;
5546
5547 fail_fw_init:
5548         return -EINVAL;
5549 }
5550
5551 static u32
5552 megasas_init_adapter_mfi(struct megasas_instance *instance)
5553 {
5554         u32 context_sz;
5555         u32 reply_q_sz;
5556
5557         /*
5558          * Get various operational parameters from status register
5559          */
5560         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5561         /*
5562          * Reduce the max supported cmds by 1. This is to ensure that the
5563          * reply_q_sz (1 more than the max cmd that driver may send)
5564          * does not exceed max cmds that the FW can support
5565          */
5566         instance->max_fw_cmds = instance->max_fw_cmds-1;
5567         instance->max_mfi_cmds = instance->max_fw_cmds;
5568         instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5569                                         0x10;
5570         /*
5571          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5572          * are reserved for IOCTL + driver's internal DCMDs.
5573          */
5574         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5575                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5576                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5577                         MEGASAS_SKINNY_INT_CMDS);
5578                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5579         } else {
5580                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5581                         MEGASAS_INT_CMDS);
5582                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5583         }
5584
5585         instance->cur_can_queue = instance->max_scsi_cmds;
5586         /*
5587          * Create a pool of commands
5588          */
5589         if (megasas_alloc_cmds(instance))
5590                 goto fail_alloc_cmds;
5591
5592         /*
5593          * Allocate memory for reply queue. Length of reply queue should
5594          * be _one_ more than the maximum commands handled by the firmware.
5595          *
5596          * Note: When FW completes commands, it places corresponding contex
5597          * values in this circular reply queue. This circular queue is a fairly
5598          * typical producer-consumer queue. FW is the producer (of completed
5599          * commands) and the driver is the consumer.
5600          */
5601         context_sz = sizeof(u32);
5602         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5603
5604         instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5605                         reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5606
5607         if (!instance->reply_queue) {
5608                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5609                 goto fail_reply_queue;
5610         }
5611
5612         if (megasas_issue_init_mfi(instance))
5613                 goto fail_fw_init;
5614
5615         if (megasas_get_ctrl_info(instance)) {
5616                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5617                         "Fail from %s %d\n", instance->unique_id,
5618                         __func__, __LINE__);
5619                 goto fail_fw_init;
5620         }
5621
5622         instance->fw_support_ieee = 0;
5623         instance->fw_support_ieee =
5624                 (instance->instancet->read_fw_status_reg(instance) &
5625                 0x04000000);
5626
5627         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5628                         instance->fw_support_ieee);
5629
5630         if (instance->fw_support_ieee)
5631                 instance->flag_ieee = 1;
5632
5633         return 0;
5634
5635 fail_fw_init:
5636
5637         dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5638                             instance->reply_queue, instance->reply_queue_h);
5639 fail_reply_queue:
5640         megasas_free_cmds(instance);
5641
5642 fail_alloc_cmds:
5643         return 1;
5644 }
5645
5646 static
5647 void megasas_setup_irq_poll(struct megasas_instance *instance)
5648 {
5649         struct megasas_irq_context *irq_ctx;
5650         u32 count, i;
5651
5652         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5653
5654         /* Initialize IRQ poll */
5655         for (i = 0; i < count; i++) {
5656                 irq_ctx = &instance->irq_context[i];
5657                 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5658                 irq_ctx->irq_poll_scheduled = false;
5659                 irq_poll_init(&irq_ctx->irqpoll,
5660                               instance->threshold_reply_count,
5661                               megasas_irqpoll);
5662         }
5663 }
5664
5665 /*
5666  * megasas_setup_irqs_ioapic -          register legacy interrupts.
5667  * @instance:                           Adapter soft state
5668  *
5669  * Do not enable interrupt, only setup ISRs.
5670  *
5671  * Return 0 on success.
5672  */
5673 static int
5674 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5675 {
5676         struct pci_dev *pdev;
5677
5678         pdev = instance->pdev;
5679         instance->irq_context[0].instance = instance;
5680         instance->irq_context[0].MSIxIndex = 0;
5681         snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5682                 "megasas", instance->host->host_no);
5683         if (request_irq(pci_irq_vector(pdev, 0),
5684                         instance->instancet->service_isr, IRQF_SHARED,
5685                         instance->irq_context->name, &instance->irq_context[0])) {
5686                 dev_err(&instance->pdev->dev,
5687                                 "Failed to register IRQ from %s %d\n",
5688                                 __func__, __LINE__);
5689                 return -1;
5690         }
5691         instance->perf_mode = MR_LATENCY_PERF_MODE;
5692         instance->low_latency_index_start = 0;
5693         return 0;
5694 }
5695
5696 /**
5697  * megasas_setup_irqs_msix -            register MSI-x interrupts.
5698  * @instance:                           Adapter soft state
5699  * @is_probe:                           Driver probe check
5700  *
5701  * Do not enable interrupt, only setup ISRs.
5702  *
5703  * Return 0 on success.
5704  */
5705 static int
5706 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5707 {
5708         int i, j;
5709         struct pci_dev *pdev;
5710
5711         pdev = instance->pdev;
5712
5713         /* Try MSI-x */
5714         for (i = 0; i < instance->msix_vectors; i++) {
5715                 instance->irq_context[i].instance = instance;
5716                 instance->irq_context[i].MSIxIndex = i;
5717                 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5718                         "megasas", instance->host->host_no, i);
5719                 if (request_irq(pci_irq_vector(pdev, i),
5720                         instance->instancet->service_isr, 0, instance->irq_context[i].name,
5721                         &instance->irq_context[i])) {
5722                         dev_err(&instance->pdev->dev,
5723                                 "Failed to register IRQ for vector %d.\n", i);
5724                         for (j = 0; j < i; j++) {
5725                                 if (j < instance->low_latency_index_start)
5726                                         irq_update_affinity_hint(
5727                                                 pci_irq_vector(pdev, j), NULL);
5728                                 free_irq(pci_irq_vector(pdev, j),
5729                                          &instance->irq_context[j]);
5730                         }
5731                         /* Retry irq register for IO_APIC*/
5732                         instance->msix_vectors = 0;
5733                         instance->msix_load_balance = false;
5734                         if (is_probe) {
5735                                 pci_free_irq_vectors(instance->pdev);
5736                                 return megasas_setup_irqs_ioapic(instance);
5737                         } else {
5738                                 return -1;
5739                         }
5740                 }
5741         }
5742
5743         return 0;
5744 }
5745
5746 /*
5747  * megasas_destroy_irqs-                unregister interrupts.
5748  * @instance:                           Adapter soft state
5749  * return:                              void
5750  */
5751 static void
5752 megasas_destroy_irqs(struct megasas_instance *instance) {
5753
5754         int i;
5755         int count;
5756         struct megasas_irq_context *irq_ctx;
5757
5758         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5759         if (instance->adapter_type != MFI_SERIES) {
5760                 for (i = 0; i < count; i++) {
5761                         irq_ctx = &instance->irq_context[i];
5762                         irq_poll_disable(&irq_ctx->irqpoll);
5763                 }
5764         }
5765
5766         if (instance->msix_vectors)
5767                 for (i = 0; i < instance->msix_vectors; i++) {
5768                         if (i < instance->low_latency_index_start)
5769                                 irq_update_affinity_hint(
5770                                     pci_irq_vector(instance->pdev, i), NULL);
5771                         free_irq(pci_irq_vector(instance->pdev, i),
5772                                  &instance->irq_context[i]);
5773                 }
5774         else
5775                 free_irq(pci_irq_vector(instance->pdev, 0),
5776                          &instance->irq_context[0]);
5777 }
5778
5779 /**
5780  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5781  * @instance:                           Adapter soft state
5782  *
5783  * Return 0 on success.
5784  */
5785 void
5786 megasas_setup_jbod_map(struct megasas_instance *instance)
5787 {
5788         int i;
5789         struct fusion_context *fusion = instance->ctrl_context;
5790         size_t pd_seq_map_sz;
5791
5792         pd_seq_map_sz = struct_size((struct MR_PD_CFG_SEQ_NUM_SYNC *)0, seq,
5793                                     MAX_PHYSICAL_DEVICES);
5794
5795         instance->use_seqnum_jbod_fp =
5796                 instance->support_seqnum_jbod_fp;
5797         if (reset_devices || !fusion ||
5798                 !instance->support_seqnum_jbod_fp) {
5799                 dev_info(&instance->pdev->dev,
5800                         "JBOD sequence map is disabled %s %d\n",
5801                         __func__, __LINE__);
5802                 instance->use_seqnum_jbod_fp = false;
5803                 return;
5804         }
5805
5806         if (fusion->pd_seq_sync[0])
5807                 goto skip_alloc;
5808
5809         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5810                 fusion->pd_seq_sync[i] = dma_alloc_coherent
5811                         (&instance->pdev->dev, pd_seq_map_sz,
5812                         &fusion->pd_seq_phys[i], GFP_KERNEL);
5813                 if (!fusion->pd_seq_sync[i]) {
5814                         dev_err(&instance->pdev->dev,
5815                                 "Failed to allocate memory from %s %d\n",
5816                                 __func__, __LINE__);
5817                         if (i == 1) {
5818                                 dma_free_coherent(&instance->pdev->dev,
5819                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
5820                                         fusion->pd_seq_phys[0]);
5821                                 fusion->pd_seq_sync[0] = NULL;
5822                         }
5823                         instance->use_seqnum_jbod_fp = false;
5824                         return;
5825                 }
5826         }
5827
5828 skip_alloc:
5829         if (!megasas_sync_pd_seq_num(instance, false) &&
5830                 !megasas_sync_pd_seq_num(instance, true))
5831                 instance->use_seqnum_jbod_fp = true;
5832         else
5833                 instance->use_seqnum_jbod_fp = false;
5834 }
5835
5836 static void megasas_setup_reply_map(struct megasas_instance *instance)
5837 {
5838         const struct cpumask *mask;
5839         unsigned int queue, cpu, low_latency_index_start;
5840
5841         low_latency_index_start = instance->low_latency_index_start;
5842
5843         for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5844                 mask = pci_irq_get_affinity(instance->pdev, queue);
5845                 if (!mask)
5846                         goto fallback;
5847
5848                 for_each_cpu(cpu, mask)
5849                         instance->reply_map[cpu] = queue;
5850         }
5851         return;
5852
5853 fallback:
5854         queue = low_latency_index_start;
5855         for_each_possible_cpu(cpu) {
5856                 instance->reply_map[cpu] = queue;
5857                 if (queue == (instance->msix_vectors - 1))
5858                         queue = low_latency_index_start;
5859                 else
5860                         queue++;
5861         }
5862 }
5863
5864 /**
5865  * megasas_get_device_list -    Get the PD and LD device list from FW.
5866  * @instance:                   Adapter soft state
5867  * @return:                     Success or failure
5868  *
5869  * Issue DCMDs to Firmware to get the PD and LD list.
5870  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5871  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5872  */
5873 static
5874 int megasas_get_device_list(struct megasas_instance *instance)
5875 {
5876         if (instance->enable_fw_dev_list) {
5877                 if (megasas_host_device_list_query(instance, true))
5878                         return FAILED;
5879         } else {
5880                 if (megasas_get_pd_list(instance) < 0) {
5881                         dev_err(&instance->pdev->dev, "failed to get PD list\n");
5882                         return FAILED;
5883                 }
5884
5885                 if (megasas_ld_list_query(instance,
5886                                           MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5887                         dev_err(&instance->pdev->dev, "failed to get LD list\n");
5888                         return FAILED;
5889                 }
5890         }
5891
5892         return SUCCESS;
5893 }
5894
5895 /**
5896  * megasas_set_high_iops_queue_affinity_and_hint -      Set affinity and hint
5897  *                                                      for high IOPS queues
5898  * @instance:                                           Adapter soft state
5899  * return:                                              void
5900  */
5901 static inline void
5902 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5903 {
5904         int i;
5905         unsigned int irq;
5906         const struct cpumask *mask;
5907
5908         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5909                 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev));
5910
5911                 for (i = 0; i < instance->low_latency_index_start; i++) {
5912                         irq = pci_irq_vector(instance->pdev, i);
5913                         irq_set_affinity_and_hint(irq, mask);
5914                 }
5915         }
5916 }
5917
5918 static int
5919 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5920 {
5921         int i, irq_flags;
5922         struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5923         struct irq_affinity *descp = &desc;
5924
5925         irq_flags = PCI_IRQ_MSIX;
5926
5927         if (instance->smp_affinity_enable)
5928                 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5929         else
5930                 descp = NULL;
5931
5932         /* Do not allocate msix vectors for poll_queues.
5933          * msix_vectors is always within a range of FW supported reply queue.
5934          */
5935         i = pci_alloc_irq_vectors_affinity(instance->pdev,
5936                 instance->low_latency_index_start,
5937                 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5938
5939         return i;
5940 }
5941
5942 /**
5943  * megasas_alloc_irq_vectors -  Allocate IRQ vectors/enable MSI-x vectors
5944  * @instance:                   Adapter soft state
5945  * return:                      void
5946  */
5947 static void
5948 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5949 {
5950         int i;
5951         unsigned int num_msix_req;
5952
5953         instance->iopoll_q_count = 0;
5954         if ((instance->adapter_type != MFI_SERIES) &&
5955                 poll_queues) {
5956
5957                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5958                 instance->low_latency_index_start = 1;
5959
5960                 /* reserve for default and non-mananged pre-vector. */
5961                 if (instance->msix_vectors > (poll_queues + 2))
5962                         instance->iopoll_q_count = poll_queues;
5963                 else
5964                         instance->iopoll_q_count = 0;
5965
5966                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5967                 instance->msix_vectors = min(num_msix_req,
5968                                 instance->msix_vectors);
5969
5970         }
5971
5972         i = __megasas_alloc_irq_vectors(instance);
5973
5974         if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5975                 || instance->iopoll_q_count) &&
5976             (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5977                 if (instance->msix_vectors)
5978                         pci_free_irq_vectors(instance->pdev);
5979                 /* Disable Balanced IOPS mode and try realloc vectors */
5980                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5981                 instance->low_latency_index_start = 1;
5982                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5983
5984                 instance->msix_vectors = min(num_msix_req,
5985                                 instance->msix_vectors);
5986
5987                 instance->iopoll_q_count = 0;
5988                 i = __megasas_alloc_irq_vectors(instance);
5989
5990         }
5991
5992         dev_info(&instance->pdev->dev,
5993                 "requested/available msix %d/%d poll_queue %d\n",
5994                         instance->msix_vectors - instance->iopoll_q_count,
5995                         i, instance->iopoll_q_count);
5996
5997         if (i > 0)
5998                 instance->msix_vectors = i;
5999         else
6000                 instance->msix_vectors = 0;
6001
6002         if (instance->smp_affinity_enable)
6003                 megasas_set_high_iops_queue_affinity_and_hint(instance);
6004 }
6005
6006 /**
6007  * megasas_init_fw -    Initializes the FW
6008  * @instance:           Adapter soft state
6009  *
6010  * This is the main function for initializing firmware
6011  */
6012
6013 static int megasas_init_fw(struct megasas_instance *instance)
6014 {
6015         u32 max_sectors_1;
6016         u32 max_sectors_2, tmp_sectors, msix_enable;
6017         u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6018         resource_size_t base_addr;
6019         void *base_addr_phys;
6020         struct megasas_ctrl_info *ctrl_info = NULL;
6021         unsigned long bar_list;
6022         int i, j, loop;
6023         struct IOV_111 *iovPtr;
6024         struct fusion_context *fusion;
6025         bool intr_coalescing;
6026         unsigned int num_msix_req;
6027         u16 lnksta, speed;
6028
6029         fusion = instance->ctrl_context;
6030
6031         /* Find first memory bar */
6032         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6033         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6034         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6035                                          "megasas: LSI")) {
6036                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6037                 return -EBUSY;
6038         }
6039
6040         base_addr = pci_resource_start(instance->pdev, instance->bar);
6041         instance->reg_set = ioremap(base_addr, 8192);
6042
6043         if (!instance->reg_set) {
6044                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6045                 goto fail_ioremap;
6046         }
6047
6048         base_addr_phys = &base_addr;
6049         dev_printk(KERN_DEBUG, &instance->pdev->dev,
6050                    "BAR:0x%lx  BAR's base_addr(phys):%pa  mapped virt_addr:0x%p\n",
6051                    instance->bar, base_addr_phys, instance->reg_set);
6052
6053         if (instance->adapter_type != MFI_SERIES)
6054                 instance->instancet = &megasas_instance_template_fusion;
6055         else {
6056                 switch (instance->pdev->device) {
6057                 case PCI_DEVICE_ID_LSI_SAS1078R:
6058                 case PCI_DEVICE_ID_LSI_SAS1078DE:
6059                         instance->instancet = &megasas_instance_template_ppc;
6060                         break;
6061                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6062                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6063                         instance->instancet = &megasas_instance_template_gen2;
6064                         break;
6065                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6066                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6067                         instance->instancet = &megasas_instance_template_skinny;
6068                         break;
6069                 case PCI_DEVICE_ID_LSI_SAS1064R:
6070                 case PCI_DEVICE_ID_DELL_PERC5:
6071                 default:
6072                         instance->instancet = &megasas_instance_template_xscale;
6073                         instance->pd_list_not_supported = 1;
6074                         break;
6075                 }
6076         }
6077
6078         if (megasas_transition_to_ready(instance, 0)) {
6079                 dev_info(&instance->pdev->dev,
6080                          "Failed to transition controller to ready from %s!\n",
6081                          __func__);
6082                 if (instance->adapter_type != MFI_SERIES) {
6083                         status_reg = instance->instancet->read_fw_status_reg(
6084                                         instance);
6085                         if (status_reg & MFI_RESET_ADAPTER) {
6086                                 if (megasas_adp_reset_wait_for_ready
6087                                         (instance, true, 0) == FAILED)
6088                                         goto fail_ready_state;
6089                         } else {
6090                                 goto fail_ready_state;
6091                         }
6092                 } else {
6093                         atomic_set(&instance->fw_reset_no_pci_access, 1);
6094                         instance->instancet->adp_reset
6095                                 (instance, instance->reg_set);
6096                         atomic_set(&instance->fw_reset_no_pci_access, 0);
6097
6098                         /*waiting for about 30 second before retry*/
6099                         ssleep(30);
6100
6101                         if (megasas_transition_to_ready(instance, 0))
6102                                 goto fail_ready_state;
6103                 }
6104
6105                 dev_info(&instance->pdev->dev,
6106                          "FW restarted successfully from %s!\n",
6107                          __func__);
6108         }
6109
6110         megasas_init_ctrl_params(instance);
6111
6112         if (megasas_set_dma_mask(instance))
6113                 goto fail_ready_state;
6114
6115         if (megasas_alloc_ctrl_mem(instance))
6116                 goto fail_alloc_dma_buf;
6117
6118         if (megasas_alloc_ctrl_dma_buffers(instance))
6119                 goto fail_alloc_dma_buf;
6120
6121         fusion = instance->ctrl_context;
6122
6123         if (instance->adapter_type >= VENTURA_SERIES) {
6124                 scratch_pad_2 =
6125                         megasas_readl(instance,
6126                                       &instance->reg_set->outbound_scratch_pad_2);
6127                 instance->max_raid_mapsize = ((scratch_pad_2 >>
6128                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6129                         MR_MAX_RAID_MAP_SIZE_MASK);
6130         }
6131
6132         instance->enable_sdev_max_qd = enable_sdev_max_qd;
6133
6134         switch (instance->adapter_type) {
6135         case VENTURA_SERIES:
6136                 fusion->pcie_bw_limitation = true;
6137                 break;
6138         case AERO_SERIES:
6139                 fusion->r56_div_offload = true;
6140                 break;
6141         default:
6142                 break;
6143         }
6144
6145         /* Check if MSI-X is supported while in ready state */
6146         msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6147                        0x4000000) >> 0x1a;
6148         if (msix_enable && !msix_disable) {
6149
6150                 scratch_pad_1 = megasas_readl
6151                         (instance, &instance->reg_set->outbound_scratch_pad_1);
6152                 /* Check max MSI-X vectors */
6153                 if (fusion) {
6154                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
6155                                 /* Thunderbolt Series*/
6156                                 instance->msix_vectors = (scratch_pad_1
6157                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6158                         } else {
6159                                 instance->msix_vectors = ((scratch_pad_1
6160                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6161                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6162
6163                                 /*
6164                                  * For Invader series, > 8 MSI-x vectors
6165                                  * supported by FW/HW implies combined
6166                                  * reply queue mode is enabled.
6167                                  * For Ventura series, > 16 MSI-x vectors
6168                                  * supported by FW/HW implies combined
6169                                  * reply queue mode is enabled.
6170                                  */
6171                                 switch (instance->adapter_type) {
6172                                 case INVADER_SERIES:
6173                                         if (instance->msix_vectors > 8)
6174                                                 instance->msix_combined = true;
6175                                         break;
6176                                 case AERO_SERIES:
6177                                 case VENTURA_SERIES:
6178                                         if (instance->msix_vectors > 16)
6179                                                 instance->msix_combined = true;
6180                                         break;
6181                                 }
6182
6183                                 if (rdpq_enable)
6184                                         instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6185                                                                 1 : 0;
6186
6187                                 if (instance->adapter_type >= INVADER_SERIES &&
6188                                     !instance->msix_combined) {
6189                                         instance->msix_load_balance = true;
6190                                         instance->smp_affinity_enable = false;
6191                                 }
6192
6193                                 /* Save 1-15 reply post index address to local memory
6194                                  * Index 0 is already saved from reg offset
6195                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6196                                  */
6197                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6198                                         instance->reply_post_host_index_addr[loop] =
6199                                                 (u32 __iomem *)
6200                                                 ((u8 __iomem *)instance->reg_set +
6201                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6202                                                 + (loop * 0x10));
6203                                 }
6204                         }
6205
6206                         dev_info(&instance->pdev->dev,
6207                                  "firmware supports msix\t: (%d)",
6208                                  instance->msix_vectors);
6209                         if (msix_vectors)
6210                                 instance->msix_vectors = min(msix_vectors,
6211                                         instance->msix_vectors);
6212                 } else /* MFI adapters */
6213                         instance->msix_vectors = 1;
6214
6215
6216                 /*
6217                  * For Aero (if some conditions are met), driver will configure a
6218                  * few additional reply queues with interrupt coalescing enabled.
6219                  * These queues with interrupt coalescing enabled are called
6220                  * High IOPS queues and rest of reply queues (based on number of
6221                  * logical CPUs) are termed as Low latency queues.
6222                  *
6223                  * Total Number of reply queues = High IOPS queues + low latency queues
6224                  *
6225                  * For rest of fusion adapters, 1 additional reply queue will be
6226                  * reserved for management commands, rest of reply queues
6227                  * (based on number of logical CPUs) will be used for IOs and
6228                  * referenced as IO queues.
6229                  * Total Number of reply queues = 1 + IO queues
6230                  *
6231                  * MFI adapters supports single MSI-x so single reply queue
6232                  * will be used for IO and management commands.
6233                  */
6234
6235                 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6236                                                                 true : false;
6237                 if (intr_coalescing &&
6238                         (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6239                         (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6240                         instance->perf_mode = MR_BALANCED_PERF_MODE;
6241                 else
6242                         instance->perf_mode = MR_LATENCY_PERF_MODE;
6243
6244
6245                 if (instance->adapter_type == AERO_SERIES) {
6246                         pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6247                         speed = lnksta & PCI_EXP_LNKSTA_CLS;
6248
6249                         /*
6250                          * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6251                          * in latency perf mode and enable R1 PCI bandwidth algorithm
6252                          */
6253                         if (speed < 0x4) {
6254                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6255                                 fusion->pcie_bw_limitation = true;
6256                         }
6257
6258                         /*
6259                          * Performance mode settings provided through module parameter-perf_mode will
6260                          * take affect only for:
6261                          * 1. Aero family of adapters.
6262                          * 2. When user sets module parameter- perf_mode in range of 0-2.
6263                          */
6264                         if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6265                                 (perf_mode <= MR_LATENCY_PERF_MODE))
6266                                 instance->perf_mode = perf_mode;
6267                         /*
6268                          * If intr coalescing is not supported by controller FW, then IOPS
6269                          * and Balanced modes are not feasible.
6270                          */
6271                         if (!intr_coalescing)
6272                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6273
6274                 }
6275
6276                 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6277                         instance->low_latency_index_start =
6278                                 MR_HIGH_IOPS_QUEUE_COUNT;
6279                 else
6280                         instance->low_latency_index_start = 1;
6281
6282                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6283
6284                 instance->msix_vectors = min(num_msix_req,
6285                                 instance->msix_vectors);
6286
6287                 megasas_alloc_irq_vectors(instance);
6288                 if (!instance->msix_vectors)
6289                         instance->msix_load_balance = false;
6290         }
6291         /*
6292          * MSI-X host index 0 is common for all adapter.
6293          * It is used for all MPT based Adapters.
6294          */
6295         if (instance->msix_combined) {
6296                 instance->reply_post_host_index_addr[0] =
6297                                 (u32 *)((u8 *)instance->reg_set +
6298                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6299         } else {
6300                 instance->reply_post_host_index_addr[0] =
6301                         (u32 *)((u8 *)instance->reg_set +
6302                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6303         }
6304
6305         if (!instance->msix_vectors) {
6306                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6307                 if (i < 0)
6308                         goto fail_init_adapter;
6309         }
6310
6311         megasas_setup_reply_map(instance);
6312
6313         dev_info(&instance->pdev->dev,
6314                 "current msix/online cpus\t: (%d/%d)\n",
6315                 instance->msix_vectors, (unsigned int)num_online_cpus());
6316         dev_info(&instance->pdev->dev,
6317                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6318
6319         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6320                 (unsigned long)instance);
6321
6322         /*
6323          * Below are default value for legacy Firmware.
6324          * non-fusion based controllers
6325          */
6326         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6327         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6328         /* Get operational params, sge flags, send init cmd to controller */
6329         if (instance->instancet->init_adapter(instance))
6330                 goto fail_init_adapter;
6331
6332         if (instance->adapter_type >= VENTURA_SERIES) {
6333                 scratch_pad_3 =
6334                         megasas_readl(instance,
6335                                       &instance->reg_set->outbound_scratch_pad_3);
6336                 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6337                         MR_DEFAULT_NVME_PAGE_SHIFT)
6338                         instance->nvme_page_size =
6339                                 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6340
6341                 dev_info(&instance->pdev->dev,
6342                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
6343         }
6344
6345         if (instance->msix_vectors ?
6346                 megasas_setup_irqs_msix(instance, 1) :
6347                 megasas_setup_irqs_ioapic(instance))
6348                 goto fail_init_adapter;
6349
6350         if (instance->adapter_type != MFI_SERIES)
6351                 megasas_setup_irq_poll(instance);
6352
6353         instance->instancet->enable_intr(instance);
6354
6355         dev_info(&instance->pdev->dev, "INIT adapter done\n");
6356
6357         megasas_setup_jbod_map(instance);
6358
6359         if (megasas_get_device_list(instance) != SUCCESS) {
6360                 dev_err(&instance->pdev->dev,
6361                         "%s: megasas_get_device_list failed\n",
6362                         __func__);
6363                 goto fail_get_ld_pd_list;
6364         }
6365
6366         /* stream detection initialization */
6367         if (instance->adapter_type >= VENTURA_SERIES) {
6368                 fusion->stream_detect_by_ld =
6369                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
6370                                 sizeof(struct LD_STREAM_DETECT *),
6371                                 GFP_KERNEL);
6372                 if (!fusion->stream_detect_by_ld) {
6373                         dev_err(&instance->pdev->dev,
6374                                 "unable to allocate stream detection for pool of LDs\n");
6375                         goto fail_get_ld_pd_list;
6376                 }
6377                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6378                         fusion->stream_detect_by_ld[i] =
6379                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
6380                                 GFP_KERNEL);
6381                         if (!fusion->stream_detect_by_ld[i]) {
6382                                 dev_err(&instance->pdev->dev,
6383                                         "unable to allocate stream detect by LD\n ");
6384                                 for (j = 0; j < i; ++j)
6385                                         kfree(fusion->stream_detect_by_ld[j]);
6386                                 kfree(fusion->stream_detect_by_ld);
6387                                 fusion->stream_detect_by_ld = NULL;
6388                                 goto fail_get_ld_pd_list;
6389                         }
6390                         fusion->stream_detect_by_ld[i]->mru_bit_map
6391                                 = MR_STREAM_BITMAP;
6392                 }
6393         }
6394
6395         /*
6396          * Compute the max allowed sectors per IO: The controller info has two
6397          * limits on max sectors. Driver should use the minimum of these two.
6398          *
6399          * 1 << stripe_sz_ops.min = max sectors per strip
6400          *
6401          * Note that older firmwares ( < FW ver 30) didn't report information
6402          * to calculate max_sectors_1. So the number ended up as zero always.
6403          */
6404         tmp_sectors = 0;
6405         ctrl_info = instance->ctrl_info_buf;
6406
6407         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6408                 le16_to_cpu(ctrl_info->max_strips_per_io);
6409         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6410
6411         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6412
6413         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6414         instance->passive = ctrl_info->cluster.passive;
6415         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6416         instance->UnevenSpanSupport =
6417                 ctrl_info->adapterOperations2.supportUnevenSpans;
6418         if (instance->UnevenSpanSupport) {
6419                 struct fusion_context *fusion = instance->ctrl_context;
6420                 if (MR_ValidateMapInfo(instance, instance->map_id))
6421                         fusion->fast_path_io = 1;
6422                 else
6423                         fusion->fast_path_io = 0;
6424
6425         }
6426         if (ctrl_info->host_interface.SRIOV) {
6427                 instance->requestorId = ctrl_info->iov.requestorId;
6428                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6429                         if (!ctrl_info->adapterOperations2.activePassive)
6430                             instance->PlasmaFW111 = 1;
6431
6432                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6433                             instance->PlasmaFW111 ? "1.11" : "new");
6434
6435                         if (instance->PlasmaFW111) {
6436                             iovPtr = (struct IOV_111 *)
6437                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6438                             instance->requestorId = iovPtr->requestorId;
6439                         }
6440                 }
6441                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6442                         instance->requestorId);
6443         }
6444
6445         instance->crash_dump_fw_support =
6446                 ctrl_info->adapterOperations3.supportCrashDump;
6447         instance->crash_dump_drv_support =
6448                 (instance->crash_dump_fw_support &&
6449                 instance->crash_dump_buf);
6450         if (instance->crash_dump_drv_support)
6451                 megasas_set_crash_dump_params(instance,
6452                         MR_CRASH_BUF_TURN_OFF);
6453
6454         else {
6455                 if (instance->crash_dump_buf)
6456                         dma_free_coherent(&instance->pdev->dev,
6457                                 CRASH_DMA_BUF_SIZE,
6458                                 instance->crash_dump_buf,
6459                                 instance->crash_dump_h);
6460                 instance->crash_dump_buf = NULL;
6461         }
6462
6463         if (instance->snapdump_wait_time) {
6464                 megasas_get_snapdump_properties(instance);
6465                 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6466                          instance->snapdump_wait_time);
6467         }
6468
6469         dev_info(&instance->pdev->dev,
6470                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6471                 le16_to_cpu(ctrl_info->pci.vendor_id),
6472                 le16_to_cpu(ctrl_info->pci.device_id),
6473                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6474                 le16_to_cpu(ctrl_info->pci.sub_device_id));
6475         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
6476                 instance->UnevenSpanSupport ? "yes" : "no");
6477         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
6478                 instance->crash_dump_drv_support ? "yes" : "no");
6479         dev_info(&instance->pdev->dev, "JBOD sequence map       : %s\n",
6480                 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6481
6482         instance->max_sectors_per_req = instance->max_num_sge *
6483                                                 SGE_BUFFER_SIZE / 512;
6484         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6485                 instance->max_sectors_per_req = tmp_sectors;
6486
6487         /* Check for valid throttlequeuedepth module parameter */
6488         if (throttlequeuedepth &&
6489                         throttlequeuedepth <= instance->max_scsi_cmds)
6490                 instance->throttlequeuedepth = throttlequeuedepth;
6491         else
6492                 instance->throttlequeuedepth =
6493                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
6494
6495         if ((resetwaittime < 1) ||
6496             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6497                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6498
6499         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6500                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6501
6502         /* Launch SR-IOV heartbeat timer */
6503         if (instance->requestorId) {
6504                 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6505                         megasas_start_timer(instance);
6506                 } else {
6507                         instance->skip_heartbeat_timer_del = 1;
6508                         goto fail_get_ld_pd_list;
6509                 }
6510         }
6511
6512         /*
6513          * Create and start watchdog thread which will monitor
6514          * controller state every 1 sec and trigger OCR when
6515          * it enters fault state
6516          */
6517         if (instance->adapter_type != MFI_SERIES)
6518                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6519                         goto fail_start_watchdog;
6520
6521         return 0;
6522
6523 fail_start_watchdog:
6524         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6525                 del_timer_sync(&instance->sriov_heartbeat_timer);
6526 fail_get_ld_pd_list:
6527         instance->instancet->disable_intr(instance);
6528         megasas_destroy_irqs(instance);
6529 fail_init_adapter:
6530         if (instance->msix_vectors)
6531                 pci_free_irq_vectors(instance->pdev);
6532         instance->msix_vectors = 0;
6533 fail_alloc_dma_buf:
6534         megasas_free_ctrl_dma_buffers(instance);
6535         megasas_free_ctrl_mem(instance);
6536 fail_ready_state:
6537         iounmap(instance->reg_set);
6538
6539 fail_ioremap:
6540         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6541
6542         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6543                 __func__, __LINE__);
6544         return -EINVAL;
6545 }
6546
6547 /**
6548  * megasas_release_mfi -        Reverses the FW initialization
6549  * @instance:                   Adapter soft state
6550  */
6551 static void megasas_release_mfi(struct megasas_instance *instance)
6552 {
6553         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6554
6555         if (instance->reply_queue)
6556                 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6557                             instance->reply_queue, instance->reply_queue_h);
6558
6559         megasas_free_cmds(instance);
6560
6561         iounmap(instance->reg_set);
6562
6563         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6564 }
6565
6566 /**
6567  * megasas_get_seq_num -        Gets latest event sequence numbers
6568  * @instance:                   Adapter soft state
6569  * @eli:                        FW event log sequence numbers information
6570  *
6571  * FW maintains a log of all events in a non-volatile area. Upper layers would
6572  * usually find out the latest sequence number of the events, the seq number at
6573  * the boot etc. They would "read" all the events below the latest seq number
6574  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6575  * number), they would subsribe to AEN (asynchronous event notification) and
6576  * wait for the events to happen.
6577  */
6578 static int
6579 megasas_get_seq_num(struct megasas_instance *instance,
6580                     struct megasas_evt_log_info *eli)
6581 {
6582         struct megasas_cmd *cmd;
6583         struct megasas_dcmd_frame *dcmd;
6584         struct megasas_evt_log_info *el_info;
6585         dma_addr_t el_info_h = 0;
6586         int ret;
6587
6588         cmd = megasas_get_cmd(instance);
6589
6590         if (!cmd) {
6591                 return -ENOMEM;
6592         }
6593
6594         dcmd = &cmd->frame->dcmd;
6595         el_info = dma_alloc_coherent(&instance->pdev->dev,
6596                                      sizeof(struct megasas_evt_log_info),
6597                                      &el_info_h, GFP_KERNEL);
6598         if (!el_info) {
6599                 megasas_return_cmd(instance, cmd);
6600                 return -ENOMEM;
6601         }
6602
6603         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6604
6605         dcmd->cmd = MFI_CMD_DCMD;
6606         dcmd->cmd_status = 0x0;
6607         dcmd->sge_count = 1;
6608         dcmd->flags = MFI_FRAME_DIR_READ;
6609         dcmd->timeout = 0;
6610         dcmd->pad_0 = 0;
6611         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6612         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6613
6614         megasas_set_dma_settings(instance, dcmd, el_info_h,
6615                                  sizeof(struct megasas_evt_log_info));
6616
6617         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6618         if (ret != DCMD_SUCCESS) {
6619                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6620                         __func__, __LINE__);
6621                 goto dcmd_failed;
6622         }
6623
6624         /*
6625          * Copy the data back into callers buffer
6626          */
6627         eli->newest_seq_num = el_info->newest_seq_num;
6628         eli->oldest_seq_num = el_info->oldest_seq_num;
6629         eli->clear_seq_num = el_info->clear_seq_num;
6630         eli->shutdown_seq_num = el_info->shutdown_seq_num;
6631         eli->boot_seq_num = el_info->boot_seq_num;
6632
6633 dcmd_failed:
6634         dma_free_coherent(&instance->pdev->dev,
6635                         sizeof(struct megasas_evt_log_info),
6636                         el_info, el_info_h);
6637
6638         megasas_return_cmd(instance, cmd);
6639
6640         return ret;
6641 }
6642
6643 /**
6644  * megasas_register_aen -       Registers for asynchronous event notification
6645  * @instance:                   Adapter soft state
6646  * @seq_num:                    The starting sequence number
6647  * @class_locale_word:          Class of the event
6648  *
6649  * This function subscribes for AEN for events beyond the @seq_num. It requests
6650  * to be notified if and only if the event is of type @class_locale
6651  */
6652 static int
6653 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6654                      u32 class_locale_word)
6655 {
6656         int ret_val;
6657         struct megasas_cmd *cmd;
6658         struct megasas_dcmd_frame *dcmd;
6659         union megasas_evt_class_locale curr_aen;
6660         union megasas_evt_class_locale prev_aen;
6661
6662         /*
6663          * If there an AEN pending already (aen_cmd), check if the
6664          * class_locale of that pending AEN is inclusive of the new
6665          * AEN request we currently have. If it is, then we don't have
6666          * to do anything. In other words, whichever events the current
6667          * AEN request is subscribing to, have already been subscribed
6668          * to.
6669          *
6670          * If the old_cmd is _not_ inclusive, then we have to abort
6671          * that command, form a class_locale that is superset of both
6672          * old and current and re-issue to the FW
6673          */
6674
6675         curr_aen.word = class_locale_word;
6676
6677         if (instance->aen_cmd) {
6678
6679                 prev_aen.word =
6680                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6681
6682                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6683                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6684                         dev_info(&instance->pdev->dev,
6685                                  "%s %d out of range class %d send by application\n",
6686                                  __func__, __LINE__, curr_aen.members.class);
6687                         return 0;
6688                 }
6689
6690                 /*
6691                  * A class whose enum value is smaller is inclusive of all
6692                  * higher values. If a PROGRESS (= -1) was previously
6693                  * registered, then a new registration requests for higher
6694                  * classes need not be sent to FW. They are automatically
6695                  * included.
6696                  *
6697                  * Locale numbers don't have such hierarchy. They are bitmap
6698                  * values
6699                  */
6700                 if ((prev_aen.members.class <= curr_aen.members.class) &&
6701                     !((prev_aen.members.locale & curr_aen.members.locale) ^
6702                       curr_aen.members.locale)) {
6703                         /*
6704                          * Previously issued event registration includes
6705                          * current request. Nothing to do.
6706                          */
6707                         return 0;
6708                 } else {
6709                         curr_aen.members.locale |= prev_aen.members.locale;
6710
6711                         if (prev_aen.members.class < curr_aen.members.class)
6712                                 curr_aen.members.class = prev_aen.members.class;
6713
6714                         instance->aen_cmd->abort_aen = 1;
6715                         ret_val = megasas_issue_blocked_abort_cmd(instance,
6716                                                                   instance->
6717                                                                   aen_cmd, 30);
6718
6719                         if (ret_val) {
6720                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6721                                        "previous AEN command\n");
6722                                 return ret_val;
6723                         }
6724                 }
6725         }
6726
6727         cmd = megasas_get_cmd(instance);
6728
6729         if (!cmd)
6730                 return -ENOMEM;
6731
6732         dcmd = &cmd->frame->dcmd;
6733
6734         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6735
6736         /*
6737          * Prepare DCMD for aen registration
6738          */
6739         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6740
6741         dcmd->cmd = MFI_CMD_DCMD;
6742         dcmd->cmd_status = 0x0;
6743         dcmd->sge_count = 1;
6744         dcmd->flags = MFI_FRAME_DIR_READ;
6745         dcmd->timeout = 0;
6746         dcmd->pad_0 = 0;
6747         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6748         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6749         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6750         instance->last_seq_num = seq_num;
6751         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6752
6753         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6754                                  sizeof(struct megasas_evt_detail));
6755
6756         if (instance->aen_cmd != NULL) {
6757                 megasas_return_cmd(instance, cmd);
6758                 return 0;
6759         }
6760
6761         /*
6762          * Store reference to the cmd used to register for AEN. When an
6763          * application wants us to register for AEN, we have to abort this
6764          * cmd and re-register with a new EVENT LOCALE supplied by that app
6765          */
6766         instance->aen_cmd = cmd;
6767
6768         /*
6769          * Issue the aen registration frame
6770          */
6771         instance->instancet->issue_dcmd(instance, cmd);
6772
6773         return 0;
6774 }
6775
6776 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6777  *
6778  * This DCMD will fetch few properties of LD/system PD defined
6779  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6780  *
6781  * DCMD send by drivers whenever new target is added to the OS.
6782  *
6783  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6784  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6785  *                       0 = system PD, 1 = LD.
6786  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6787  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6788  *
6789  * @instance:           Adapter soft state
6790  * @sdev:               OS provided scsi device
6791  *
6792  * Returns 0 on success non-zero on failure.
6793  */
6794 int
6795 megasas_get_target_prop(struct megasas_instance *instance,
6796                         struct scsi_device *sdev)
6797 {
6798         int ret;
6799         struct megasas_cmd *cmd;
6800         struct megasas_dcmd_frame *dcmd;
6801         u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6802                         sdev->id;
6803
6804         cmd = megasas_get_cmd(instance);
6805
6806         if (!cmd) {
6807                 dev_err(&instance->pdev->dev,
6808                         "Failed to get cmd %s\n", __func__);
6809                 return -ENOMEM;
6810         }
6811
6812         dcmd = &cmd->frame->dcmd;
6813
6814         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6815         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6816         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6817
6818         dcmd->mbox.s[1] = cpu_to_le16(targetId);
6819         dcmd->cmd = MFI_CMD_DCMD;
6820         dcmd->cmd_status = 0xFF;
6821         dcmd->sge_count = 1;
6822         dcmd->flags = MFI_FRAME_DIR_READ;
6823         dcmd->timeout = 0;
6824         dcmd->pad_0 = 0;
6825         dcmd->data_xfer_len =
6826                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6827         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6828
6829         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6830                                  sizeof(struct MR_TARGET_PROPERTIES));
6831
6832         if ((instance->adapter_type != MFI_SERIES) &&
6833             !instance->mask_interrupts)
6834                 ret = megasas_issue_blocked_cmd(instance,
6835                                                 cmd, MFI_IO_TIMEOUT_SECS);
6836         else
6837                 ret = megasas_issue_polled(instance, cmd);
6838
6839         switch (ret) {
6840         case DCMD_TIMEOUT:
6841                 switch (dcmd_timeout_ocr_possible(instance)) {
6842                 case INITIATE_OCR:
6843                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6844                         mutex_unlock(&instance->reset_mutex);
6845                         megasas_reset_fusion(instance->host,
6846                                              MFI_IO_TIMEOUT_OCR);
6847                         mutex_lock(&instance->reset_mutex);
6848                         break;
6849                 case KILL_ADAPTER:
6850                         megaraid_sas_kill_hba(instance);
6851                         break;
6852                 case IGNORE_TIMEOUT:
6853                         dev_info(&instance->pdev->dev,
6854                                  "Ignore DCMD timeout: %s %d\n",
6855                                  __func__, __LINE__);
6856                         break;
6857                 }
6858                 break;
6859
6860         default:
6861                 megasas_return_cmd(instance, cmd);
6862         }
6863         if (ret != DCMD_SUCCESS)
6864                 dev_err(&instance->pdev->dev,
6865                         "return from %s %d return value %d\n",
6866                         __func__, __LINE__, ret);
6867
6868         return ret;
6869 }
6870
6871 /**
6872  * megasas_start_aen -  Subscribes to AEN during driver load time
6873  * @instance:           Adapter soft state
6874  */
6875 static int megasas_start_aen(struct megasas_instance *instance)
6876 {
6877         struct megasas_evt_log_info eli;
6878         union megasas_evt_class_locale class_locale;
6879
6880         /*
6881          * Get the latest sequence number from FW
6882          */
6883         memset(&eli, 0, sizeof(eli));
6884
6885         if (megasas_get_seq_num(instance, &eli))
6886                 return -1;
6887
6888         /*
6889          * Register AEN with FW for latest sequence number plus 1
6890          */
6891         class_locale.members.reserved = 0;
6892         class_locale.members.locale = MR_EVT_LOCALE_ALL;
6893         class_locale.members.class = MR_EVT_CLASS_DEBUG;
6894
6895         return megasas_register_aen(instance,
6896                         le32_to_cpu(eli.newest_seq_num) + 1,
6897                         class_locale.word);
6898 }
6899
6900 /**
6901  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6902  * @instance:           Adapter soft state
6903  */
6904 static int megasas_io_attach(struct megasas_instance *instance)
6905 {
6906         struct Scsi_Host *host = instance->host;
6907
6908         /*
6909          * Export parameters required by SCSI mid-layer
6910          */
6911         host->unique_id = instance->unique_id;
6912         host->can_queue = instance->max_scsi_cmds;
6913         host->this_id = instance->init_id;
6914         host->sg_tablesize = instance->max_num_sge;
6915
6916         if (instance->fw_support_ieee)
6917                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6918
6919         /*
6920          * Check if the module parameter value for max_sectors can be used
6921          */
6922         if (max_sectors && max_sectors < instance->max_sectors_per_req)
6923                 instance->max_sectors_per_req = max_sectors;
6924         else {
6925                 if (max_sectors) {
6926                         if (((instance->pdev->device ==
6927                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6928                                 (instance->pdev->device ==
6929                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6930                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6931                                 instance->max_sectors_per_req = max_sectors;
6932                         } else {
6933                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6934                                 "and <= %d (or < 1MB for GEN2 controller)\n",
6935                                 instance->max_sectors_per_req);
6936                         }
6937                 }
6938         }
6939
6940         host->max_sectors = instance->max_sectors_per_req;
6941         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6942         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6943         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6944         host->max_lun = MEGASAS_MAX_LUN;
6945         host->max_cmd_len = 16;
6946
6947         /* Use shared host tagset only for fusion adaptors
6948          * if there are managed interrupts (smp affinity enabled case).
6949          * Single msix_vectors in kdump, so shared host tag is also disabled.
6950          */
6951
6952         host->host_tagset = 0;
6953         host->nr_hw_queues = 1;
6954
6955         if ((instance->adapter_type != MFI_SERIES) &&
6956                 (instance->msix_vectors > instance->low_latency_index_start) &&
6957                 host_tagset_enable &&
6958                 instance->smp_affinity_enable) {
6959                 host->host_tagset = 1;
6960                 host->nr_hw_queues = instance->msix_vectors -
6961                         instance->low_latency_index_start + instance->iopoll_q_count;
6962                 if (instance->iopoll_q_count)
6963                         host->nr_maps = 3;
6964         } else {
6965                 instance->iopoll_q_count = 0;
6966         }
6967
6968         dev_info(&instance->pdev->dev,
6969                 "Max firmware commands: %d shared with default "
6970                 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6971                 host->nr_hw_queues - instance->iopoll_q_count,
6972                 instance->iopoll_q_count);
6973         /*
6974          * Notify the mid-layer about the new controller
6975          */
6976         if (scsi_add_host(host, &instance->pdev->dev)) {
6977                 dev_err(&instance->pdev->dev,
6978                         "Failed to add host from %s %d\n",
6979                         __func__, __LINE__);
6980                 return -ENODEV;
6981         }
6982
6983         return 0;
6984 }
6985
6986 /**
6987  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6988  *
6989  * @instance:           Adapter soft state
6990  * Description:
6991  *
6992  * For Ventura, driver/FW will operate in 63bit DMA addresses.
6993  *
6994  * For invader-
6995  *      By default, driver/FW will operate in 32bit DMA addresses
6996  *      for consistent DMA mapping but if 32 bit consistent
6997  *      DMA mask fails, driver will try with 63 bit consistent
6998  *      mask provided FW is true 63bit DMA capable
6999  *
7000  * For older controllers(Thunderbolt and MFI based adapters)-
7001  *      driver/FW will operate in 32 bit consistent DMA addresses.
7002  */
7003 static int
7004 megasas_set_dma_mask(struct megasas_instance *instance)
7005 {
7006         u64 consistent_mask;
7007         struct pci_dev *pdev;
7008         u32 scratch_pad_1;
7009
7010         pdev = instance->pdev;
7011         consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7012                                 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7013
7014         if (IS_DMA64) {
7015                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7016                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7017                         goto fail_set_dma_mask;
7018
7019                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7020                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7021                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7022                         /*
7023                          * If 32 bit DMA mask fails, then try for 64 bit mask
7024                          * for FW capable of handling 64 bit DMA.
7025                          */
7026                         scratch_pad_1 = megasas_readl
7027                                 (instance, &instance->reg_set->outbound_scratch_pad_1);
7028
7029                         if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7030                                 goto fail_set_dma_mask;
7031                         else if (dma_set_mask_and_coherent(&pdev->dev,
7032                                                            DMA_BIT_MASK(63)))
7033                                 goto fail_set_dma_mask;
7034                 }
7035         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7036                 goto fail_set_dma_mask;
7037
7038         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7039                 instance->consistent_mask_64bit = false;
7040         else
7041                 instance->consistent_mask_64bit = true;
7042
7043         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7044                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7045                  (instance->consistent_mask_64bit ? "63" : "32"));
7046
7047         return 0;
7048
7049 fail_set_dma_mask:
7050         dev_err(&pdev->dev, "Failed to set DMA mask\n");
7051         return -1;
7052
7053 }
7054
7055 /*
7056  * megasas_set_adapter_type -   Set adapter type.
7057  *                              Supported controllers can be divided in
7058  *                              different categories-
7059  *                                      enum MR_ADAPTER_TYPE {
7060  *                                              MFI_SERIES = 1,
7061  *                                              THUNDERBOLT_SERIES = 2,
7062  *                                              INVADER_SERIES = 3,
7063  *                                              VENTURA_SERIES = 4,
7064  *                                              AERO_SERIES = 5,
7065  *                                      };
7066  * @instance:                   Adapter soft state
7067  * return:                      void
7068  */
7069 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7070 {
7071         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7072             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7073                 instance->adapter_type = MFI_SERIES;
7074         } else {
7075                 switch (instance->pdev->device) {
7076                 case PCI_DEVICE_ID_LSI_AERO_10E1:
7077                 case PCI_DEVICE_ID_LSI_AERO_10E2:
7078                 case PCI_DEVICE_ID_LSI_AERO_10E5:
7079                 case PCI_DEVICE_ID_LSI_AERO_10E6:
7080                         instance->adapter_type = AERO_SERIES;
7081                         break;
7082                 case PCI_DEVICE_ID_LSI_VENTURA:
7083                 case PCI_DEVICE_ID_LSI_CRUSADER:
7084                 case PCI_DEVICE_ID_LSI_HARPOON:
7085                 case PCI_DEVICE_ID_LSI_TOMCAT:
7086                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7087                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7088                         instance->adapter_type = VENTURA_SERIES;
7089                         break;
7090                 case PCI_DEVICE_ID_LSI_FUSION:
7091                 case PCI_DEVICE_ID_LSI_PLASMA:
7092                         instance->adapter_type = THUNDERBOLT_SERIES;
7093                         break;
7094                 case PCI_DEVICE_ID_LSI_INVADER:
7095                 case PCI_DEVICE_ID_LSI_INTRUDER:
7096                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7097                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7098                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7099                 case PCI_DEVICE_ID_LSI_FURY:
7100                         instance->adapter_type = INVADER_SERIES;
7101                         break;
7102                 default: /* For all other supported controllers */
7103                         instance->adapter_type = MFI_SERIES;
7104                         break;
7105                 }
7106         }
7107 }
7108
7109 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7110 {
7111         instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7112                         sizeof(u32), &instance->producer_h, GFP_KERNEL);
7113         instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7114                         sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7115
7116         if (!instance->producer || !instance->consumer) {
7117                 dev_err(&instance->pdev->dev,
7118                         "Failed to allocate memory for producer, consumer\n");
7119                 return -1;
7120         }
7121
7122         *instance->producer = 0;
7123         *instance->consumer = 0;
7124         return 0;
7125 }
7126
7127 /**
7128  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
7129  *                              structures which are not common across MFI
7130  *                              adapters and fusion adapters.
7131  *                              For MFI based adapters, allocate producer and
7132  *                              consumer buffers. For fusion adapters, allocate
7133  *                              memory for fusion context.
7134  * @instance:                   Adapter soft state
7135  * return:                      0 for SUCCESS
7136  */
7137 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7138 {
7139         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7140                                       GFP_KERNEL);
7141         if (!instance->reply_map)
7142                 return -ENOMEM;
7143
7144         switch (instance->adapter_type) {
7145         case MFI_SERIES:
7146                 if (megasas_alloc_mfi_ctrl_mem(instance))
7147                         return -ENOMEM;
7148                 break;
7149         case AERO_SERIES:
7150         case VENTURA_SERIES:
7151         case THUNDERBOLT_SERIES:
7152         case INVADER_SERIES:
7153                 if (megasas_alloc_fusion_context(instance))
7154                         return -ENOMEM;
7155                 break;
7156         }
7157
7158         return 0;
7159 }
7160
7161 /*
7162  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
7163  *                              producer, consumer buffers for MFI adapters
7164  *
7165  * @instance -                  Adapter soft instance
7166  *
7167  */
7168 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7169 {
7170         kfree(instance->reply_map);
7171         if (instance->adapter_type == MFI_SERIES) {
7172                 if (instance->producer)
7173                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7174                                             instance->producer,
7175                                             instance->producer_h);
7176                 if (instance->consumer)
7177                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7178                                             instance->consumer,
7179                                             instance->consumer_h);
7180         } else {
7181                 megasas_free_fusion_context(instance);
7182         }
7183 }
7184
7185 /**
7186  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
7187  *                                      driver load time
7188  *
7189  * @instance:                           Adapter soft instance
7190  *
7191  * @return:                             O for SUCCESS
7192  */
7193 static inline
7194 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7195 {
7196         struct pci_dev *pdev = instance->pdev;
7197         struct fusion_context *fusion = instance->ctrl_context;
7198
7199         instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7200                         sizeof(struct megasas_evt_detail),
7201                         &instance->evt_detail_h, GFP_KERNEL);
7202
7203         if (!instance->evt_detail) {
7204                 dev_err(&instance->pdev->dev,
7205                         "Failed to allocate event detail buffer\n");
7206                 return -ENOMEM;
7207         }
7208
7209         if (fusion) {
7210                 fusion->ioc_init_request =
7211                         dma_alloc_coherent(&pdev->dev,
7212                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
7213                                            &fusion->ioc_init_request_phys,
7214                                            GFP_KERNEL);
7215
7216                 if (!fusion->ioc_init_request) {
7217                         dev_err(&pdev->dev,
7218                                 "Failed to allocate ioc init request\n");
7219                         return -ENOMEM;
7220                 }
7221
7222                 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7223                                 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7224                                 &instance->snapdump_prop_h, GFP_KERNEL);
7225
7226                 if (!instance->snapdump_prop)
7227                         dev_err(&pdev->dev,
7228                                 "Failed to allocate snapdump properties buffer\n");
7229
7230                 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7231                                                         HOST_DEVICE_LIST_SZ,
7232                                                         &instance->host_device_list_buf_h,
7233                                                         GFP_KERNEL);
7234
7235                 if (!instance->host_device_list_buf) {
7236                         dev_err(&pdev->dev,
7237                                 "Failed to allocate targetid list buffer\n");
7238                         return -ENOMEM;
7239                 }
7240
7241         }
7242
7243         instance->pd_list_buf =
7244                 dma_alloc_coherent(&pdev->dev,
7245                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7246                                      &instance->pd_list_buf_h, GFP_KERNEL);
7247
7248         if (!instance->pd_list_buf) {
7249                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7250                 return -ENOMEM;
7251         }
7252
7253         instance->ctrl_info_buf =
7254                 dma_alloc_coherent(&pdev->dev,
7255                                      sizeof(struct megasas_ctrl_info),
7256                                      &instance->ctrl_info_buf_h, GFP_KERNEL);
7257
7258         if (!instance->ctrl_info_buf) {
7259                 dev_err(&pdev->dev,
7260                         "Failed to allocate controller info buffer\n");
7261                 return -ENOMEM;
7262         }
7263
7264         instance->ld_list_buf =
7265                 dma_alloc_coherent(&pdev->dev,
7266                                      sizeof(struct MR_LD_LIST),
7267                                      &instance->ld_list_buf_h, GFP_KERNEL);
7268
7269         if (!instance->ld_list_buf) {
7270                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7271                 return -ENOMEM;
7272         }
7273
7274         instance->ld_targetid_list_buf =
7275                 dma_alloc_coherent(&pdev->dev,
7276                                 sizeof(struct MR_LD_TARGETID_LIST),
7277                                 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7278
7279         if (!instance->ld_targetid_list_buf) {
7280                 dev_err(&pdev->dev,
7281                         "Failed to allocate LD targetid list buffer\n");
7282                 return -ENOMEM;
7283         }
7284
7285         if (!reset_devices) {
7286                 instance->system_info_buf =
7287                         dma_alloc_coherent(&pdev->dev,
7288                                         sizeof(struct MR_DRV_SYSTEM_INFO),
7289                                         &instance->system_info_h, GFP_KERNEL);
7290                 instance->pd_info =
7291                         dma_alloc_coherent(&pdev->dev,
7292                                         sizeof(struct MR_PD_INFO),
7293                                         &instance->pd_info_h, GFP_KERNEL);
7294                 instance->tgt_prop =
7295                         dma_alloc_coherent(&pdev->dev,
7296                                         sizeof(struct MR_TARGET_PROPERTIES),
7297                                         &instance->tgt_prop_h, GFP_KERNEL);
7298                 instance->crash_dump_buf =
7299                         dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7300                                         &instance->crash_dump_h, GFP_KERNEL);
7301
7302                 if (!instance->system_info_buf)
7303                         dev_err(&instance->pdev->dev,
7304                                 "Failed to allocate system info buffer\n");
7305
7306                 if (!instance->pd_info)
7307                         dev_err(&instance->pdev->dev,
7308                                 "Failed to allocate pd_info buffer\n");
7309
7310                 if (!instance->tgt_prop)
7311                         dev_err(&instance->pdev->dev,
7312                                 "Failed to allocate tgt_prop buffer\n");
7313
7314                 if (!instance->crash_dump_buf)
7315                         dev_err(&instance->pdev->dev,
7316                                 "Failed to allocate crash dump buffer\n");
7317         }
7318
7319         return 0;
7320 }
7321
7322 /*
7323  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
7324  *                                      during driver load time
7325  *
7326  * @instance-                           Adapter soft instance
7327  *
7328  */
7329 static inline
7330 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7331 {
7332         struct pci_dev *pdev = instance->pdev;
7333         struct fusion_context *fusion = instance->ctrl_context;
7334
7335         if (instance->evt_detail)
7336                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7337                                     instance->evt_detail,
7338                                     instance->evt_detail_h);
7339
7340         if (fusion && fusion->ioc_init_request)
7341                 dma_free_coherent(&pdev->dev,
7342                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
7343                                   fusion->ioc_init_request,
7344                                   fusion->ioc_init_request_phys);
7345
7346         if (instance->pd_list_buf)
7347                 dma_free_coherent(&pdev->dev,
7348                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7349                                     instance->pd_list_buf,
7350                                     instance->pd_list_buf_h);
7351
7352         if (instance->ld_list_buf)
7353                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7354                                     instance->ld_list_buf,
7355                                     instance->ld_list_buf_h);
7356
7357         if (instance->ld_targetid_list_buf)
7358                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7359                                     instance->ld_targetid_list_buf,
7360                                     instance->ld_targetid_list_buf_h);
7361
7362         if (instance->ctrl_info_buf)
7363                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7364                                     instance->ctrl_info_buf,
7365                                     instance->ctrl_info_buf_h);
7366
7367         if (instance->system_info_buf)
7368                 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7369                                     instance->system_info_buf,
7370                                     instance->system_info_h);
7371
7372         if (instance->pd_info)
7373                 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7374                                     instance->pd_info, instance->pd_info_h);
7375
7376         if (instance->tgt_prop)
7377                 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7378                                     instance->tgt_prop, instance->tgt_prop_h);
7379
7380         if (instance->crash_dump_buf)
7381                 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7382                                     instance->crash_dump_buf,
7383                                     instance->crash_dump_h);
7384
7385         if (instance->snapdump_prop)
7386                 dma_free_coherent(&pdev->dev,
7387                                   sizeof(struct MR_SNAPDUMP_PROPERTIES),
7388                                   instance->snapdump_prop,
7389                                   instance->snapdump_prop_h);
7390
7391         if (instance->host_device_list_buf)
7392                 dma_free_coherent(&pdev->dev,
7393                                   HOST_DEVICE_LIST_SZ,
7394                                   instance->host_device_list_buf,
7395                                   instance->host_device_list_buf_h);
7396
7397 }
7398
7399 /*
7400  * megasas_init_ctrl_params -           Initialize controller's instance
7401  *                                      parameters before FW init
7402  * @instance -                          Adapter soft instance
7403  * @return -                            void
7404  */
7405 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7406 {
7407         instance->fw_crash_state = UNAVAILABLE;
7408
7409         megasas_poll_wait_aen = 0;
7410         instance->issuepend_done = 1;
7411         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7412
7413         /*
7414          * Initialize locks and queues
7415          */
7416         INIT_LIST_HEAD(&instance->cmd_pool);
7417         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7418
7419         atomic_set(&instance->fw_outstanding, 0);
7420         atomic64_set(&instance->total_io_count, 0);
7421
7422         init_waitqueue_head(&instance->int_cmd_wait_q);
7423         init_waitqueue_head(&instance->abort_cmd_wait_q);
7424
7425         spin_lock_init(&instance->crashdump_lock);
7426         spin_lock_init(&instance->mfi_pool_lock);
7427         spin_lock_init(&instance->hba_lock);
7428         spin_lock_init(&instance->stream_lock);
7429         spin_lock_init(&instance->completion_lock);
7430
7431         mutex_init(&instance->reset_mutex);
7432
7433         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7434             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7435                 instance->flag_ieee = 1;
7436
7437         instance->flag = 0;
7438         instance->unload = 1;
7439         instance->last_time = 0;
7440         instance->disableOnlineCtrlReset = 1;
7441         instance->UnevenSpanSupport = 0;
7442         instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7443         instance->msix_load_balance = false;
7444
7445         if (instance->adapter_type != MFI_SERIES)
7446                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7447         else
7448                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7449 }
7450
7451 /**
7452  * megasas_probe_one -  PCI hotplug entry point
7453  * @pdev:               PCI device structure
7454  * @id:                 PCI ids of supported hotplugged adapter
7455  */
7456 static int megasas_probe_one(struct pci_dev *pdev,
7457                              const struct pci_device_id *id)
7458 {
7459         int rval, pos;
7460         struct Scsi_Host *host;
7461         struct megasas_instance *instance;
7462         u16 control = 0;
7463
7464         switch (pdev->device) {
7465         case PCI_DEVICE_ID_LSI_AERO_10E0:
7466         case PCI_DEVICE_ID_LSI_AERO_10E3:
7467         case PCI_DEVICE_ID_LSI_AERO_10E4:
7468         case PCI_DEVICE_ID_LSI_AERO_10E7:
7469                 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7470                 return 1;
7471         case PCI_DEVICE_ID_LSI_AERO_10E1:
7472         case PCI_DEVICE_ID_LSI_AERO_10E5:
7473                 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7474                 break;
7475         }
7476
7477         /* Reset MSI-X in the kdump kernel */
7478         if (reset_devices) {
7479                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7480                 if (pos) {
7481                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7482                                              &control);
7483                         if (control & PCI_MSIX_FLAGS_ENABLE) {
7484                                 dev_info(&pdev->dev, "resetting MSI-X\n");
7485                                 pci_write_config_word(pdev,
7486                                                       pos + PCI_MSIX_FLAGS,
7487                                                       control &
7488                                                       ~PCI_MSIX_FLAGS_ENABLE);
7489                         }
7490                 }
7491         }
7492
7493         /*
7494          * PCI prepping: enable device set bus mastering and dma mask
7495          */
7496         rval = pci_enable_device_mem(pdev);
7497
7498         if (rval) {
7499                 return rval;
7500         }
7501
7502         pci_set_master(pdev);
7503
7504         host = scsi_host_alloc(&megasas_template,
7505                                sizeof(struct megasas_instance));
7506
7507         if (!host) {
7508                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7509                 goto fail_alloc_instance;
7510         }
7511
7512         instance = (struct megasas_instance *)host->hostdata;
7513         memset(instance, 0, sizeof(*instance));
7514         atomic_set(&instance->fw_reset_no_pci_access, 0);
7515
7516         /*
7517          * Initialize PCI related and misc parameters
7518          */
7519         instance->pdev = pdev;
7520         instance->host = host;
7521         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7522         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7523
7524         megasas_set_adapter_type(instance);
7525
7526         /*
7527          * Initialize MFI Firmware
7528          */
7529         if (megasas_init_fw(instance))
7530                 goto fail_init_mfi;
7531
7532         if (instance->requestorId) {
7533                 if (instance->PlasmaFW111) {
7534                         instance->vf_affiliation_111 =
7535                                 dma_alloc_coherent(&pdev->dev,
7536                                         sizeof(struct MR_LD_VF_AFFILIATION_111),
7537                                         &instance->vf_affiliation_111_h,
7538                                         GFP_KERNEL);
7539                         if (!instance->vf_affiliation_111)
7540                                 dev_warn(&pdev->dev, "Can't allocate "
7541                                        "memory for VF affiliation buffer\n");
7542                 } else {
7543                         instance->vf_affiliation =
7544                                 dma_alloc_coherent(&pdev->dev,
7545                                         (MAX_LOGICAL_DRIVES + 1) *
7546                                         sizeof(struct MR_LD_VF_AFFILIATION),
7547                                         &instance->vf_affiliation_h,
7548                                         GFP_KERNEL);
7549                         if (!instance->vf_affiliation)
7550                                 dev_warn(&pdev->dev, "Can't allocate "
7551                                        "memory for VF affiliation buffer\n");
7552                 }
7553         }
7554
7555         /*
7556          * Store instance in PCI softstate
7557          */
7558         pci_set_drvdata(pdev, instance);
7559
7560         /*
7561          * Add this controller to megasas_mgmt_info structure so that it
7562          * can be exported to management applications
7563          */
7564         megasas_mgmt_info.count++;
7565         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7566         megasas_mgmt_info.max_index++;
7567
7568         /*
7569          * Register with SCSI mid-layer
7570          */
7571         if (megasas_io_attach(instance))
7572                 goto fail_io_attach;
7573
7574         instance->unload = 0;
7575         /*
7576          * Trigger SCSI to scan our drives
7577          */
7578         if (!instance->enable_fw_dev_list ||
7579             (instance->host_device_list_buf->count > 0))
7580                 scsi_scan_host(host);
7581
7582         /*
7583          * Initiate AEN (Asynchronous Event Notification)
7584          */
7585         if (megasas_start_aen(instance)) {
7586                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7587                 goto fail_start_aen;
7588         }
7589
7590         megasas_setup_debugfs(instance);
7591
7592         /* Get current SR-IOV LD/VF affiliation */
7593         if (instance->requestorId)
7594                 megasas_get_ld_vf_affiliation(instance, 1);
7595
7596         return 0;
7597
7598 fail_start_aen:
7599         instance->unload = 1;
7600         scsi_remove_host(instance->host);
7601 fail_io_attach:
7602         megasas_mgmt_info.count--;
7603         megasas_mgmt_info.max_index--;
7604         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7605
7606         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7607                 del_timer_sync(&instance->sriov_heartbeat_timer);
7608
7609         instance->instancet->disable_intr(instance);
7610         megasas_destroy_irqs(instance);
7611
7612         if (instance->adapter_type != MFI_SERIES)
7613                 megasas_release_fusion(instance);
7614         else
7615                 megasas_release_mfi(instance);
7616
7617         if (instance->msix_vectors)
7618                 pci_free_irq_vectors(instance->pdev);
7619         instance->msix_vectors = 0;
7620
7621         if (instance->fw_crash_state != UNAVAILABLE)
7622                 megasas_free_host_crash_buffer(instance);
7623
7624         if (instance->adapter_type != MFI_SERIES)
7625                 megasas_fusion_stop_watchdog(instance);
7626 fail_init_mfi:
7627         scsi_host_put(host);
7628 fail_alloc_instance:
7629         pci_disable_device(pdev);
7630
7631         return -ENODEV;
7632 }
7633
7634 /**
7635  * megasas_flush_cache -        Requests FW to flush all its caches
7636  * @instance:                   Adapter soft state
7637  */
7638 static void megasas_flush_cache(struct megasas_instance *instance)
7639 {
7640         struct megasas_cmd *cmd;
7641         struct megasas_dcmd_frame *dcmd;
7642
7643         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7644                 return;
7645
7646         cmd = megasas_get_cmd(instance);
7647
7648         if (!cmd)
7649                 return;
7650
7651         dcmd = &cmd->frame->dcmd;
7652
7653         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7654
7655         dcmd->cmd = MFI_CMD_DCMD;
7656         dcmd->cmd_status = 0x0;
7657         dcmd->sge_count = 0;
7658         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7659         dcmd->timeout = 0;
7660         dcmd->pad_0 = 0;
7661         dcmd->data_xfer_len = 0;
7662         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7663         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7664
7665         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7666                         != DCMD_SUCCESS) {
7667                 dev_err(&instance->pdev->dev,
7668                         "return from %s %d\n", __func__, __LINE__);
7669                 return;
7670         }
7671
7672         megasas_return_cmd(instance, cmd);
7673 }
7674
7675 /**
7676  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
7677  * @instance:                           Adapter soft state
7678  * @opcode:                             Shutdown/Hibernate
7679  */
7680 static void megasas_shutdown_controller(struct megasas_instance *instance,
7681                                         u32 opcode)
7682 {
7683         struct megasas_cmd *cmd;
7684         struct megasas_dcmd_frame *dcmd;
7685
7686         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7687                 return;
7688
7689         cmd = megasas_get_cmd(instance);
7690
7691         if (!cmd)
7692                 return;
7693
7694         if (instance->aen_cmd)
7695                 megasas_issue_blocked_abort_cmd(instance,
7696                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7697         if (instance->map_update_cmd)
7698                 megasas_issue_blocked_abort_cmd(instance,
7699                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7700         if (instance->jbod_seq_cmd)
7701                 megasas_issue_blocked_abort_cmd(instance,
7702                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7703
7704         dcmd = &cmd->frame->dcmd;
7705
7706         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7707
7708         dcmd->cmd = MFI_CMD_DCMD;
7709         dcmd->cmd_status = 0x0;
7710         dcmd->sge_count = 0;
7711         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7712         dcmd->timeout = 0;
7713         dcmd->pad_0 = 0;
7714         dcmd->data_xfer_len = 0;
7715         dcmd->opcode = cpu_to_le32(opcode);
7716
7717         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7718                         != DCMD_SUCCESS) {
7719                 dev_err(&instance->pdev->dev,
7720                         "return from %s %d\n", __func__, __LINE__);
7721                 return;
7722         }
7723
7724         megasas_return_cmd(instance, cmd);
7725 }
7726
7727 /**
7728  * megasas_suspend -    driver suspend entry point
7729  * @dev:                Device structure
7730  */
7731 static int __maybe_unused
7732 megasas_suspend(struct device *dev)
7733 {
7734         struct megasas_instance *instance;
7735
7736         instance = dev_get_drvdata(dev);
7737
7738         if (!instance)
7739                 return 0;
7740
7741         instance->unload = 1;
7742
7743         dev_info(dev, "%s is called\n", __func__);
7744
7745         /* Shutdown SR-IOV heartbeat timer */
7746         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7747                 del_timer_sync(&instance->sriov_heartbeat_timer);
7748
7749         /* Stop the FW fault detection watchdog */
7750         if (instance->adapter_type != MFI_SERIES)
7751                 megasas_fusion_stop_watchdog(instance);
7752
7753         megasas_flush_cache(instance);
7754         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7755
7756         /* cancel the delayed work if this work still in queue */
7757         if (instance->ev != NULL) {
7758                 struct megasas_aen_event *ev = instance->ev;
7759                 cancel_delayed_work_sync(&ev->hotplug_work);
7760                 instance->ev = NULL;
7761         }
7762
7763         tasklet_kill(&instance->isr_tasklet);
7764
7765         pci_set_drvdata(instance->pdev, instance);
7766         instance->instancet->disable_intr(instance);
7767
7768         megasas_destroy_irqs(instance);
7769
7770         if (instance->msix_vectors)
7771                 pci_free_irq_vectors(instance->pdev);
7772
7773         return 0;
7774 }
7775
7776 /**
7777  * megasas_resume-      driver resume entry point
7778  * @dev:                Device structure
7779  */
7780 static int __maybe_unused
7781 megasas_resume(struct device *dev)
7782 {
7783         int rval;
7784         struct Scsi_Host *host;
7785         struct megasas_instance *instance;
7786         u32 status_reg;
7787
7788         instance = dev_get_drvdata(dev);
7789
7790         if (!instance)
7791                 return 0;
7792
7793         host = instance->host;
7794
7795         dev_info(dev, "%s is called\n", __func__);
7796
7797         /*
7798          * We expect the FW state to be READY
7799          */
7800
7801         if (megasas_transition_to_ready(instance, 0)) {
7802                 dev_info(&instance->pdev->dev,
7803                          "Failed to transition controller to ready from %s!\n",
7804                          __func__);
7805                 if (instance->adapter_type != MFI_SERIES) {
7806                         status_reg =
7807                                 instance->instancet->read_fw_status_reg(instance);
7808                         if (!(status_reg & MFI_RESET_ADAPTER) ||
7809                                 ((megasas_adp_reset_wait_for_ready
7810                                 (instance, true, 0)) == FAILED))
7811                                 goto fail_ready_state;
7812                 } else {
7813                         atomic_set(&instance->fw_reset_no_pci_access, 1);
7814                         instance->instancet->adp_reset
7815                                 (instance, instance->reg_set);
7816                         atomic_set(&instance->fw_reset_no_pci_access, 0);
7817
7818                         /* waiting for about 30 seconds before retry */
7819                         ssleep(30);
7820
7821                         if (megasas_transition_to_ready(instance, 0))
7822                                 goto fail_ready_state;
7823                 }
7824
7825                 dev_info(&instance->pdev->dev,
7826                          "FW restarted successfully from %s!\n",
7827                          __func__);
7828         }
7829         if (megasas_set_dma_mask(instance))
7830                 goto fail_set_dma_mask;
7831
7832         /*
7833          * Initialize MFI Firmware
7834          */
7835
7836         atomic_set(&instance->fw_outstanding, 0);
7837         atomic_set(&instance->ldio_outstanding, 0);
7838
7839         /* Now re-enable MSI-X */
7840         if (instance->msix_vectors)
7841                 megasas_alloc_irq_vectors(instance);
7842
7843         if (!instance->msix_vectors) {
7844                 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7845                                              PCI_IRQ_LEGACY);
7846                 if (rval < 0)
7847                         goto fail_reenable_msix;
7848         }
7849
7850         megasas_setup_reply_map(instance);
7851
7852         if (instance->adapter_type != MFI_SERIES) {
7853                 megasas_reset_reply_desc(instance);
7854                 if (megasas_ioc_init_fusion(instance)) {
7855                         megasas_free_cmds(instance);
7856                         megasas_free_cmds_fusion(instance);
7857                         goto fail_init_mfi;
7858                 }
7859                 if (!megasas_get_map_info(instance))
7860                         megasas_sync_map_info(instance);
7861         } else {
7862                 *instance->producer = 0;
7863                 *instance->consumer = 0;
7864                 if (megasas_issue_init_mfi(instance))
7865                         goto fail_init_mfi;
7866         }
7867
7868         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7869                 goto fail_init_mfi;
7870
7871         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7872                      (unsigned long)instance);
7873
7874         if (instance->msix_vectors ?
7875                         megasas_setup_irqs_msix(instance, 0) :
7876                         megasas_setup_irqs_ioapic(instance))
7877                 goto fail_init_mfi;
7878
7879         if (instance->adapter_type != MFI_SERIES)
7880                 megasas_setup_irq_poll(instance);
7881
7882         /* Re-launch SR-IOV heartbeat timer */
7883         if (instance->requestorId) {
7884                 if (!megasas_sriov_start_heartbeat(instance, 0))
7885                         megasas_start_timer(instance);
7886                 else {
7887                         instance->skip_heartbeat_timer_del = 1;
7888                         goto fail_init_mfi;
7889                 }
7890         }
7891
7892         instance->instancet->enable_intr(instance);
7893         megasas_setup_jbod_map(instance);
7894         instance->unload = 0;
7895
7896         /*
7897          * Initiate AEN (Asynchronous Event Notification)
7898          */
7899         if (megasas_start_aen(instance))
7900                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7901
7902         /* Re-launch FW fault watchdog */
7903         if (instance->adapter_type != MFI_SERIES)
7904                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7905                         goto fail_start_watchdog;
7906
7907         return 0;
7908
7909 fail_start_watchdog:
7910         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7911                 del_timer_sync(&instance->sriov_heartbeat_timer);
7912 fail_init_mfi:
7913         megasas_free_ctrl_dma_buffers(instance);
7914         megasas_free_ctrl_mem(instance);
7915         scsi_host_put(host);
7916
7917 fail_reenable_msix:
7918 fail_set_dma_mask:
7919 fail_ready_state:
7920
7921         return -ENODEV;
7922 }
7923
7924 static inline int
7925 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7926 {
7927         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7928         int i;
7929         u8 adp_state;
7930
7931         for (i = 0; i < wait_time; i++) {
7932                 adp_state = atomic_read(&instance->adprecovery);
7933                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7934                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7935                         break;
7936
7937                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7938                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7939
7940                 msleep(1000);
7941         }
7942
7943         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7944                 dev_info(&instance->pdev->dev,
7945                          "%s HBA failed to become operational, adp_state %d\n",
7946                          __func__, adp_state);
7947                 return 1;
7948         }
7949
7950         return 0;
7951 }
7952
7953 /**
7954  * megasas_detach_one - PCI hot"un"plug entry point
7955  * @pdev:               PCI device structure
7956  */
7957 static void megasas_detach_one(struct pci_dev *pdev)
7958 {
7959         int i;
7960         struct Scsi_Host *host;
7961         struct megasas_instance *instance;
7962         struct fusion_context *fusion;
7963         size_t pd_seq_map_sz;
7964
7965         instance = pci_get_drvdata(pdev);
7966
7967         if (!instance)
7968                 return;
7969
7970         host = instance->host;
7971         fusion = instance->ctrl_context;
7972
7973         /* Shutdown SR-IOV heartbeat timer */
7974         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7975                 del_timer_sync(&instance->sriov_heartbeat_timer);
7976
7977         /* Stop the FW fault detection watchdog */
7978         if (instance->adapter_type != MFI_SERIES)
7979                 megasas_fusion_stop_watchdog(instance);
7980
7981         if (instance->fw_crash_state != UNAVAILABLE)
7982                 megasas_free_host_crash_buffer(instance);
7983         scsi_remove_host(instance->host);
7984         instance->unload = 1;
7985
7986         if (megasas_wait_for_adapter_operational(instance))
7987                 goto skip_firing_dcmds;
7988
7989         megasas_flush_cache(instance);
7990         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7991
7992 skip_firing_dcmds:
7993         /* cancel the delayed work if this work still in queue*/
7994         if (instance->ev != NULL) {
7995                 struct megasas_aen_event *ev = instance->ev;
7996                 cancel_delayed_work_sync(&ev->hotplug_work);
7997                 instance->ev = NULL;
7998         }
7999
8000         /* cancel all wait events */
8001         wake_up_all(&instance->int_cmd_wait_q);
8002
8003         tasklet_kill(&instance->isr_tasklet);
8004
8005         /*
8006          * Take the instance off the instance array. Note that we will not
8007          * decrement the max_index. We let this array be sparse array
8008          */
8009         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8010                 if (megasas_mgmt_info.instance[i] == instance) {
8011                         megasas_mgmt_info.count--;
8012                         megasas_mgmt_info.instance[i] = NULL;
8013
8014                         break;
8015                 }
8016         }
8017
8018         instance->instancet->disable_intr(instance);
8019
8020         megasas_destroy_irqs(instance);
8021
8022         if (instance->msix_vectors)
8023                 pci_free_irq_vectors(instance->pdev);
8024
8025         if (instance->adapter_type >= VENTURA_SERIES) {
8026                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8027                         kfree(fusion->stream_detect_by_ld[i]);
8028                 kfree(fusion->stream_detect_by_ld);
8029                 fusion->stream_detect_by_ld = NULL;
8030         }
8031
8032
8033         if (instance->adapter_type != MFI_SERIES) {
8034                 megasas_release_fusion(instance);
8035                 pd_seq_map_sz =
8036                         struct_size((struct MR_PD_CFG_SEQ_NUM_SYNC *)0,
8037                                     seq, MAX_PHYSICAL_DEVICES);
8038                 for (i = 0; i < 2 ; i++) {
8039                         if (fusion->ld_map[i])
8040                                 dma_free_coherent(&instance->pdev->dev,
8041                                                   fusion->max_map_sz,
8042                                                   fusion->ld_map[i],
8043                                                   fusion->ld_map_phys[i]);
8044                         if (fusion->ld_drv_map[i]) {
8045                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8046                                         vfree(fusion->ld_drv_map[i]);
8047                                 else
8048                                         free_pages((ulong)fusion->ld_drv_map[i],
8049                                                    fusion->drv_map_pages);
8050                         }
8051
8052                         if (fusion->pd_seq_sync[i])
8053                                 dma_free_coherent(&instance->pdev->dev,
8054                                         pd_seq_map_sz,
8055                                         fusion->pd_seq_sync[i],
8056                                         fusion->pd_seq_phys[i]);
8057                 }
8058         } else {
8059                 megasas_release_mfi(instance);
8060         }
8061
8062         if (instance->vf_affiliation)
8063                 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8064                                     sizeof(struct MR_LD_VF_AFFILIATION),
8065                                     instance->vf_affiliation,
8066                                     instance->vf_affiliation_h);
8067
8068         if (instance->vf_affiliation_111)
8069                 dma_free_coherent(&pdev->dev,
8070                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
8071                                     instance->vf_affiliation_111,
8072                                     instance->vf_affiliation_111_h);
8073
8074         if (instance->hb_host_mem)
8075                 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8076                                     instance->hb_host_mem,
8077                                     instance->hb_host_mem_h);
8078
8079         megasas_free_ctrl_dma_buffers(instance);
8080
8081         megasas_free_ctrl_mem(instance);
8082
8083         megasas_destroy_debugfs(instance);
8084
8085         scsi_host_put(host);
8086
8087         pci_disable_device(pdev);
8088 }
8089
8090 /**
8091  * megasas_shutdown -   Shutdown entry point
8092  * @pdev:               PCI device structure
8093  */
8094 static void megasas_shutdown(struct pci_dev *pdev)
8095 {
8096         struct megasas_instance *instance = pci_get_drvdata(pdev);
8097
8098         if (!instance)
8099                 return;
8100
8101         instance->unload = 1;
8102
8103         if (megasas_wait_for_adapter_operational(instance))
8104                 goto skip_firing_dcmds;
8105
8106         megasas_flush_cache(instance);
8107         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8108
8109 skip_firing_dcmds:
8110         instance->instancet->disable_intr(instance);
8111         megasas_destroy_irqs(instance);
8112
8113         if (instance->msix_vectors)
8114                 pci_free_irq_vectors(instance->pdev);
8115 }
8116
8117 /*
8118  * megasas_mgmt_open -  char node "open" entry point
8119  * @inode:      char node inode
8120  * @filep:      char node file
8121  */
8122 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8123 {
8124         /*
8125          * Allow only those users with admin rights
8126          */
8127         if (!capable(CAP_SYS_ADMIN))
8128                 return -EACCES;
8129
8130         return 0;
8131 }
8132
8133 /*
8134  * megasas_mgmt_fasync -        Async notifier registration from applications
8135  * @fd:         char node file descriptor number
8136  * @filep:      char node file
8137  * @mode:       notifier on/off
8138  *
8139  * This function adds the calling process to a driver global queue. When an
8140  * event occurs, SIGIO will be sent to all processes in this queue.
8141  */
8142 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8143 {
8144         int rc;
8145
8146         mutex_lock(&megasas_async_queue_mutex);
8147
8148         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8149
8150         mutex_unlock(&megasas_async_queue_mutex);
8151
8152         if (rc >= 0) {
8153                 /* For sanity check when we get ioctl */
8154                 filep->private_data = filep;
8155                 return 0;
8156         }
8157
8158         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8159
8160         return rc;
8161 }
8162
8163 /*
8164  * megasas_mgmt_poll -  char node "poll" entry point
8165  * @filep:      char node file
8166  * @wait:       Events to poll for
8167  */
8168 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8169 {
8170         __poll_t mask;
8171         unsigned long flags;
8172
8173         poll_wait(file, &megasas_poll_wait, wait);
8174         spin_lock_irqsave(&poll_aen_lock, flags);
8175         if (megasas_poll_wait_aen)
8176                 mask = (EPOLLIN | EPOLLRDNORM);
8177         else
8178                 mask = 0;
8179         megasas_poll_wait_aen = 0;
8180         spin_unlock_irqrestore(&poll_aen_lock, flags);
8181         return mask;
8182 }
8183
8184 /*
8185  * megasas_set_crash_dump_params_ioctl:
8186  *              Send CRASH_DUMP_MODE DCMD to all controllers
8187  * @cmd:        MFI command frame
8188  */
8189
8190 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8191 {
8192         struct megasas_instance *local_instance;
8193         int i, error = 0;
8194         int crash_support;
8195
8196         crash_support = cmd->frame->dcmd.mbox.w[0];
8197
8198         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8199                 local_instance = megasas_mgmt_info.instance[i];
8200                 if (local_instance && local_instance->crash_dump_drv_support) {
8201                         if ((atomic_read(&local_instance->adprecovery) ==
8202                                 MEGASAS_HBA_OPERATIONAL) &&
8203                                 !megasas_set_crash_dump_params(local_instance,
8204                                         crash_support)) {
8205                                 local_instance->crash_dump_app_support =
8206                                         crash_support;
8207                                 dev_info(&local_instance->pdev->dev,
8208                                         "Application firmware crash "
8209                                         "dump mode set success\n");
8210                                 error = 0;
8211                         } else {
8212                                 dev_info(&local_instance->pdev->dev,
8213                                         "Application firmware crash "
8214                                         "dump mode set failed\n");
8215                                 error = -1;
8216                         }
8217                 }
8218         }
8219         return error;
8220 }
8221
8222 /**
8223  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
8224  * @instance:                   Adapter soft state
8225  * @user_ioc:                   User's ioctl packet
8226  * @ioc:                        ioctl packet
8227  */
8228 static int
8229 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8230                       struct megasas_iocpacket __user * user_ioc,
8231                       struct megasas_iocpacket *ioc)
8232 {
8233         struct megasas_sge64 *kern_sge64 = NULL;
8234         struct megasas_sge32 *kern_sge32 = NULL;
8235         struct megasas_cmd *cmd;
8236         void *kbuff_arr[MAX_IOCTL_SGE];
8237         dma_addr_t buf_handle = 0;
8238         int error = 0, i;
8239         void *sense = NULL;
8240         dma_addr_t sense_handle;
8241         void *sense_ptr;
8242         u32 opcode = 0;
8243         int ret = DCMD_SUCCESS;
8244
8245         memset(kbuff_arr, 0, sizeof(kbuff_arr));
8246
8247         if (ioc->sge_count > MAX_IOCTL_SGE) {
8248                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
8249                        ioc->sge_count, MAX_IOCTL_SGE);
8250                 return -EINVAL;
8251         }
8252
8253         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8254             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8255             !instance->support_nvme_passthru) ||
8256             ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8257             !instance->support_pci_lane_margining)) {
8258                 dev_err(&instance->pdev->dev,
8259                         "Received invalid ioctl command 0x%x\n",
8260                         ioc->frame.hdr.cmd);
8261                 return -ENOTSUPP;
8262         }
8263
8264         cmd = megasas_get_cmd(instance);
8265         if (!cmd) {
8266                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8267                 return -ENOMEM;
8268         }
8269
8270         /*
8271          * User's IOCTL packet has 2 frames (maximum). Copy those two
8272          * frames into our cmd's frames. cmd->frame's context will get
8273          * overwritten when we copy from user's frames. So set that value
8274          * alone separately
8275          */
8276         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8277         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8278         cmd->frame->hdr.pad_0 = 0;
8279
8280         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8281
8282         if (instance->consistent_mask_64bit)
8283                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8284                                        MFI_FRAME_SENSE64));
8285         else
8286                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8287                                                MFI_FRAME_SENSE64));
8288
8289         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8290                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8291
8292         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8293                 mutex_lock(&instance->reset_mutex);
8294                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8295                         megasas_return_cmd(instance, cmd);
8296                         mutex_unlock(&instance->reset_mutex);
8297                         return -1;
8298                 }
8299                 mutex_unlock(&instance->reset_mutex);
8300         }
8301
8302         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8303                 error = megasas_set_crash_dump_params_ioctl(cmd);
8304                 megasas_return_cmd(instance, cmd);
8305                 return error;
8306         }
8307
8308         /*
8309          * The management interface between applications and the fw uses
8310          * MFI frames. E.g, RAID configuration changes, LD property changes
8311          * etc are accomplishes through different kinds of MFI frames. The
8312          * driver needs to care only about substituting user buffers with
8313          * kernel buffers in SGLs. The location of SGL is embedded in the
8314          * struct iocpacket itself.
8315          */
8316         if (instance->consistent_mask_64bit)
8317                 kern_sge64 = (struct megasas_sge64 *)
8318                         ((unsigned long)cmd->frame + ioc->sgl_off);
8319         else
8320                 kern_sge32 = (struct megasas_sge32 *)
8321                         ((unsigned long)cmd->frame + ioc->sgl_off);
8322
8323         /*
8324          * For each user buffer, create a mirror buffer and copy in
8325          */
8326         for (i = 0; i < ioc->sge_count; i++) {
8327                 if (!ioc->sgl[i].iov_len)
8328                         continue;
8329
8330                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8331                                                     ioc->sgl[i].iov_len,
8332                                                     &buf_handle, GFP_KERNEL);
8333                 if (!kbuff_arr[i]) {
8334                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8335                                "kernel SGL buffer for IOCTL\n");
8336                         error = -ENOMEM;
8337                         goto out;
8338                 }
8339
8340                 /*
8341                  * We don't change the dma_coherent_mask, so
8342                  * dma_alloc_coherent only returns 32bit addresses
8343                  */
8344                 if (instance->consistent_mask_64bit) {
8345                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8346                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8347                 } else {
8348                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8349                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8350                 }
8351
8352                 /*
8353                  * We created a kernel buffer corresponding to the
8354                  * user buffer. Now copy in from the user buffer
8355                  */
8356                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8357                                    (u32) (ioc->sgl[i].iov_len))) {
8358                         error = -EFAULT;
8359                         goto out;
8360                 }
8361         }
8362
8363         if (ioc->sense_len) {
8364                 /* make sure the pointer is part of the frame */
8365                 if (ioc->sense_off >
8366                     (sizeof(union megasas_frame) - sizeof(__le64))) {
8367                         error = -EINVAL;
8368                         goto out;
8369                 }
8370
8371                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8372                                              &sense_handle, GFP_KERNEL);
8373                 if (!sense) {
8374                         error = -ENOMEM;
8375                         goto out;
8376                 }
8377
8378                 /* always store 64 bits regardless of addressing */
8379                 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8380                 put_unaligned_le64(sense_handle, sense_ptr);
8381         }
8382
8383         /*
8384          * Set the sync_cmd flag so that the ISR knows not to complete this
8385          * cmd to the SCSI mid-layer
8386          */
8387         cmd->sync_cmd = 1;
8388
8389         ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8390         switch (ret) {
8391         case DCMD_INIT:
8392         case DCMD_BUSY:
8393                 cmd->sync_cmd = 0;
8394                 dev_err(&instance->pdev->dev,
8395                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8396                          __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8397                          cmd->cmd_status_drv);
8398                 error = -EBUSY;
8399                 goto out;
8400         }
8401
8402         cmd->sync_cmd = 0;
8403
8404         if (instance->unload == 1) {
8405                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8406                         "don't submit data to application\n");
8407                 goto out;
8408         }
8409         /*
8410          * copy out the kernel buffers to user buffers
8411          */
8412         for (i = 0; i < ioc->sge_count; i++) {
8413                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8414                                  ioc->sgl[i].iov_len)) {
8415                         error = -EFAULT;
8416                         goto out;
8417                 }
8418         }
8419
8420         /*
8421          * copy out the sense
8422          */
8423         if (ioc->sense_len) {
8424                 void __user *uptr;
8425                 /*
8426                  * sense_ptr points to the location that has the user
8427                  * sense buffer address
8428                  */
8429                 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8430                 if (in_compat_syscall())
8431                         uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8432                                                         sense_ptr));
8433                 else
8434                         uptr = get_unaligned((void __user **)sense_ptr);
8435
8436                 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8437                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
8438                                         "sense data\n");
8439                         error = -EFAULT;
8440                         goto out;
8441                 }
8442         }
8443
8444         /*
8445          * copy the status codes returned by the fw
8446          */
8447         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8448                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8449                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8450                 error = -EFAULT;
8451         }
8452
8453 out:
8454         if (sense) {
8455                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8456                                     sense, sense_handle);
8457         }
8458
8459         for (i = 0; i < ioc->sge_count; i++) {
8460                 if (kbuff_arr[i]) {
8461                         if (instance->consistent_mask_64bit)
8462                                 dma_free_coherent(&instance->pdev->dev,
8463                                         le32_to_cpu(kern_sge64[i].length),
8464                                         kbuff_arr[i],
8465                                         le64_to_cpu(kern_sge64[i].phys_addr));
8466                         else
8467                                 dma_free_coherent(&instance->pdev->dev,
8468                                         le32_to_cpu(kern_sge32[i].length),
8469                                         kbuff_arr[i],
8470                                         le32_to_cpu(kern_sge32[i].phys_addr));
8471                         kbuff_arr[i] = NULL;
8472                 }
8473         }
8474
8475         megasas_return_cmd(instance, cmd);
8476         return error;
8477 }
8478
8479 static struct megasas_iocpacket *
8480 megasas_compat_iocpacket_get_user(void __user *arg)
8481 {
8482         struct megasas_iocpacket *ioc;
8483         struct compat_megasas_iocpacket __user *cioc = arg;
8484         size_t size;
8485         int err = -EFAULT;
8486         int i;
8487
8488         ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8489         if (!ioc)
8490                 return ERR_PTR(-ENOMEM);
8491         size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8492         if (copy_from_user(ioc, arg, size))
8493                 goto out;
8494
8495         for (i = 0; i < MAX_IOCTL_SGE; i++) {
8496                 compat_uptr_t iov_base;
8497
8498                 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8499                     get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8500                         goto out;
8501
8502                 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8503         }
8504
8505         return ioc;
8506 out:
8507         kfree(ioc);
8508         return ERR_PTR(err);
8509 }
8510
8511 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8512 {
8513         struct megasas_iocpacket __user *user_ioc =
8514             (struct megasas_iocpacket __user *)arg;
8515         struct megasas_iocpacket *ioc;
8516         struct megasas_instance *instance;
8517         int error;
8518
8519         if (in_compat_syscall())
8520                 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8521         else
8522                 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8523
8524         if (IS_ERR(ioc))
8525                 return PTR_ERR(ioc);
8526
8527         instance = megasas_lookup_instance(ioc->host_no);
8528         if (!instance) {
8529                 error = -ENODEV;
8530                 goto out_kfree_ioc;
8531         }
8532
8533         /* Block ioctls in VF mode */
8534         if (instance->requestorId && !allow_vf_ioctls) {
8535                 error = -ENODEV;
8536                 goto out_kfree_ioc;
8537         }
8538
8539         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8540                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8541                 error = -ENODEV;
8542                 goto out_kfree_ioc;
8543         }
8544
8545         if (instance->unload == 1) {
8546                 error = -ENODEV;
8547                 goto out_kfree_ioc;
8548         }
8549
8550         if (down_interruptible(&instance->ioctl_sem)) {
8551                 error = -ERESTARTSYS;
8552                 goto out_kfree_ioc;
8553         }
8554
8555         if  (megasas_wait_for_adapter_operational(instance)) {
8556                 error = -ENODEV;
8557                 goto out_up;
8558         }
8559
8560         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8561 out_up:
8562         up(&instance->ioctl_sem);
8563
8564 out_kfree_ioc:
8565         kfree(ioc);
8566         return error;
8567 }
8568
8569 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8570 {
8571         struct megasas_instance *instance;
8572         struct megasas_aen aen;
8573         int error;
8574
8575         if (file->private_data != file) {
8576                 printk(KERN_DEBUG "megasas: fasync_helper was not "
8577                        "called first\n");
8578                 return -EINVAL;
8579         }
8580
8581         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8582                 return -EFAULT;
8583
8584         instance = megasas_lookup_instance(aen.host_no);
8585
8586         if (!instance)
8587                 return -ENODEV;
8588
8589         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8590                 return -ENODEV;
8591         }
8592
8593         if (instance->unload == 1) {
8594                 return -ENODEV;
8595         }
8596
8597         if  (megasas_wait_for_adapter_operational(instance))
8598                 return -ENODEV;
8599
8600         mutex_lock(&instance->reset_mutex);
8601         error = megasas_register_aen(instance, aen.seq_num,
8602                                      aen.class_locale_word);
8603         mutex_unlock(&instance->reset_mutex);
8604         return error;
8605 }
8606
8607 /**
8608  * megasas_mgmt_ioctl - char node ioctl entry point
8609  * @file:       char device file pointer
8610  * @cmd:        ioctl command
8611  * @arg:        ioctl command arguments address
8612  */
8613 static long
8614 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8615 {
8616         switch (cmd) {
8617         case MEGASAS_IOC_FIRMWARE:
8618                 return megasas_mgmt_ioctl_fw(file, arg);
8619
8620         case MEGASAS_IOC_GET_AEN:
8621                 return megasas_mgmt_ioctl_aen(file, arg);
8622         }
8623
8624         return -ENOTTY;
8625 }
8626
8627 #ifdef CONFIG_COMPAT
8628 static long
8629 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8630                           unsigned long arg)
8631 {
8632         switch (cmd) {
8633         case MEGASAS_IOC_FIRMWARE32:
8634                 return megasas_mgmt_ioctl_fw(file, arg);
8635         case MEGASAS_IOC_GET_AEN:
8636                 return megasas_mgmt_ioctl_aen(file, arg);
8637         }
8638
8639         return -ENOTTY;
8640 }
8641 #endif
8642
8643 /*
8644  * File operations structure for management interface
8645  */
8646 static const struct file_operations megasas_mgmt_fops = {
8647         .owner = THIS_MODULE,
8648         .open = megasas_mgmt_open,
8649         .fasync = megasas_mgmt_fasync,
8650         .unlocked_ioctl = megasas_mgmt_ioctl,
8651         .poll = megasas_mgmt_poll,
8652 #ifdef CONFIG_COMPAT
8653         .compat_ioctl = megasas_mgmt_compat_ioctl,
8654 #endif
8655         .llseek = noop_llseek,
8656 };
8657
8658 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8659
8660 /*
8661  * PCI hotplug support registration structure
8662  */
8663 static struct pci_driver megasas_pci_driver = {
8664
8665         .name = "megaraid_sas",
8666         .id_table = megasas_pci_table,
8667         .probe = megasas_probe_one,
8668         .remove = megasas_detach_one,
8669         .driver.pm = &megasas_pm_ops,
8670         .shutdown = megasas_shutdown,
8671 };
8672
8673 /*
8674  * Sysfs driver attributes
8675  */
8676 static ssize_t version_show(struct device_driver *dd, char *buf)
8677 {
8678         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8679                         MEGASAS_VERSION);
8680 }
8681 static DRIVER_ATTR_RO(version);
8682
8683 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8684 {
8685         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8686                 MEGASAS_RELDATE);
8687 }
8688 static DRIVER_ATTR_RO(release_date);
8689
8690 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8691 {
8692         return sprintf(buf, "%u\n", support_poll_for_event);
8693 }
8694 static DRIVER_ATTR_RO(support_poll_for_event);
8695
8696 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8697 {
8698         return sprintf(buf, "%u\n", support_device_change);
8699 }
8700 static DRIVER_ATTR_RO(support_device_change);
8701
8702 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8703 {
8704         return sprintf(buf, "%u\n", megasas_dbg_lvl);
8705 }
8706
8707 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8708                              size_t count)
8709 {
8710         int retval = count;
8711
8712         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8713                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8714                 retval = -EINVAL;
8715         }
8716         return retval;
8717 }
8718 static DRIVER_ATTR_RW(dbg_lvl);
8719
8720 static ssize_t
8721 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8722 {
8723         return sprintf(buf, "%u\n", support_nvme_encapsulation);
8724 }
8725
8726 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8727
8728 static ssize_t
8729 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8730 {
8731         return sprintf(buf, "%u\n", support_pci_lane_margining);
8732 }
8733
8734 static DRIVER_ATTR_RO(support_pci_lane_margining);
8735
8736 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8737 {
8738         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8739         scsi_remove_device(sdev);
8740         scsi_device_put(sdev);
8741 }
8742
8743 /**
8744  * megasas_update_device_list - Update the PD and LD device list from FW
8745  *                              after an AEN event notification
8746  * @instance:                   Adapter soft state
8747  * @event_type:                 Indicates type of event (PD or LD event)
8748  *
8749  * @return:                     Success or failure
8750  *
8751  * Issue DCMDs to Firmware to update the internal device list in driver.
8752  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8753  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8754  */
8755 static
8756 int megasas_update_device_list(struct megasas_instance *instance,
8757                                int event_type)
8758 {
8759         int dcmd_ret;
8760
8761         if (instance->enable_fw_dev_list) {
8762                 return megasas_host_device_list_query(instance, false);
8763         } else {
8764                 if (event_type & SCAN_PD_CHANNEL) {
8765                         dcmd_ret = megasas_get_pd_list(instance);
8766                         if (dcmd_ret != DCMD_SUCCESS)
8767                                 return dcmd_ret;
8768                 }
8769
8770                 if (event_type & SCAN_VD_CHANNEL) {
8771                         if (!instance->requestorId ||
8772                         megasas_get_ld_vf_affiliation(instance, 0)) {
8773                                 return megasas_ld_list_query(instance,
8774                                                 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8775                         }
8776                 }
8777         }
8778         return DCMD_SUCCESS;
8779 }
8780
8781 /**
8782  * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8783  *                              after an AEN event notification
8784  * @instance:                   Adapter soft state
8785  * @scan_type:                  Indicates type of devices (PD/LD) to add
8786  * @return                      void
8787  */
8788 static
8789 void megasas_add_remove_devices(struct megasas_instance *instance,
8790                                 int scan_type)
8791 {
8792         int i, j;
8793         u16 pd_index = 0;
8794         u16 ld_index = 0;
8795         u16 channel = 0, id = 0;
8796         struct Scsi_Host *host;
8797         struct scsi_device *sdev1;
8798         struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8799         struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8800
8801         host = instance->host;
8802
8803         if (instance->enable_fw_dev_list) {
8804                 targetid_list = instance->host_device_list_buf;
8805                 for (i = 0; i < targetid_list->count; i++) {
8806                         targetid_entry = &targetid_list->host_device_list[i];
8807                         if (targetid_entry->flags.u.bits.is_sys_pd) {
8808                                 channel = le16_to_cpu(targetid_entry->target_id) /
8809                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8810                                 id = le16_to_cpu(targetid_entry->target_id) %
8811                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8812                         } else {
8813                                 channel = MEGASAS_MAX_PD_CHANNELS +
8814                                           (le16_to_cpu(targetid_entry->target_id) /
8815                                            MEGASAS_MAX_DEV_PER_CHANNEL);
8816                                 id = le16_to_cpu(targetid_entry->target_id) %
8817                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8818                         }
8819                         sdev1 = scsi_device_lookup(host, channel, id, 0);
8820                         if (!sdev1) {
8821                                 scsi_add_device(host, channel, id, 0);
8822                         } else {
8823                                 scsi_device_put(sdev1);
8824                         }
8825                 }
8826         }
8827
8828         if (scan_type & SCAN_PD_CHANNEL) {
8829                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8830                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8831                                 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8832                                 sdev1 = scsi_device_lookup(host, i, j, 0);
8833                                 if (instance->pd_list[pd_index].driveState ==
8834                                                         MR_PD_STATE_SYSTEM) {
8835                                         if (!sdev1)
8836                                                 scsi_add_device(host, i, j, 0);
8837                                         else
8838                                                 scsi_device_put(sdev1);
8839                                 } else {
8840                                         if (sdev1)
8841                                                 megasas_remove_scsi_device(sdev1);
8842                                 }
8843                         }
8844                 }
8845         }
8846
8847         if (scan_type & SCAN_VD_CHANNEL) {
8848                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8849                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8850                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8851                                 sdev1 = scsi_device_lookup(host,
8852                                                 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8853                                 if (instance->ld_ids[ld_index] != 0xff) {
8854                                         if (!sdev1)
8855                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8856                                         else
8857                                                 scsi_device_put(sdev1);
8858                                 } else {
8859                                         if (sdev1)
8860                                                 megasas_remove_scsi_device(sdev1);
8861                                 }
8862                         }
8863                 }
8864         }
8865
8866 }
8867
8868 static void
8869 megasas_aen_polling(struct work_struct *work)
8870 {
8871         struct megasas_aen_event *ev =
8872                 container_of(work, struct megasas_aen_event, hotplug_work.work);
8873         struct megasas_instance *instance = ev->instance;
8874         union megasas_evt_class_locale class_locale;
8875         int event_type = 0;
8876         u32 seq_num;
8877         u16 ld_target_id;
8878         int error;
8879         u8  dcmd_ret = DCMD_SUCCESS;
8880         struct scsi_device *sdev1;
8881
8882         if (!instance) {
8883                 printk(KERN_ERR "invalid instance!\n");
8884                 kfree(ev);
8885                 return;
8886         }
8887
8888         /* Don't run the event workqueue thread if OCR is running */
8889         mutex_lock(&instance->reset_mutex);
8890
8891         instance->ev = NULL;
8892         if (instance->evt_detail) {
8893                 megasas_decode_evt(instance);
8894
8895                 switch (le32_to_cpu(instance->evt_detail->code)) {
8896
8897                 case MR_EVT_PD_INSERTED:
8898                 case MR_EVT_PD_REMOVED:
8899                         event_type = SCAN_PD_CHANNEL;
8900                         break;
8901
8902                 case MR_EVT_LD_OFFLINE:
8903                 case MR_EVT_LD_DELETED:
8904                         ld_target_id = instance->evt_detail->args.ld.target_id;
8905                         sdev1 = scsi_device_lookup(instance->host,
8906                                                    MEGASAS_MAX_PD_CHANNELS +
8907                                                    (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8908                                                    (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8909                                                    0);
8910                         if (sdev1)
8911                                 megasas_remove_scsi_device(sdev1);
8912
8913                         event_type = SCAN_VD_CHANNEL;
8914                         break;
8915                 case MR_EVT_LD_CREATED:
8916                         event_type = SCAN_VD_CHANNEL;
8917                         break;
8918
8919                 case MR_EVT_CFG_CLEARED:
8920                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8921                 case MR_EVT_FOREIGN_CFG_IMPORTED:
8922                 case MR_EVT_LD_STATE_CHANGE:
8923                         event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8924                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8925                                 instance->host->host_no);
8926                         break;
8927
8928                 case MR_EVT_CTRL_PROP_CHANGED:
8929                         dcmd_ret = megasas_get_ctrl_info(instance);
8930                         if (dcmd_ret == DCMD_SUCCESS &&
8931                             instance->snapdump_wait_time) {
8932                                 megasas_get_snapdump_properties(instance);
8933                                 dev_info(&instance->pdev->dev,
8934                                          "Snap dump wait time\t: %d\n",
8935                                          instance->snapdump_wait_time);
8936                         }
8937                         break;
8938                 default:
8939                         event_type = 0;
8940                         break;
8941                 }
8942         } else {
8943                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8944                 mutex_unlock(&instance->reset_mutex);
8945                 kfree(ev);
8946                 return;
8947         }
8948
8949         if (event_type)
8950                 dcmd_ret = megasas_update_device_list(instance, event_type);
8951
8952         mutex_unlock(&instance->reset_mutex);
8953
8954         if (event_type && dcmd_ret == DCMD_SUCCESS)
8955                 megasas_add_remove_devices(instance, event_type);
8956
8957         if (dcmd_ret == DCMD_SUCCESS)
8958                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8959         else
8960                 seq_num = instance->last_seq_num;
8961
8962         /* Register AEN with FW for latest sequence number plus 1 */
8963         class_locale.members.reserved = 0;
8964         class_locale.members.locale = MR_EVT_LOCALE_ALL;
8965         class_locale.members.class = MR_EVT_CLASS_DEBUG;
8966
8967         if (instance->aen_cmd != NULL) {
8968                 kfree(ev);
8969                 return;
8970         }
8971
8972         mutex_lock(&instance->reset_mutex);
8973         error = megasas_register_aen(instance, seq_num,
8974                                         class_locale.word);
8975         if (error)
8976                 dev_err(&instance->pdev->dev,
8977                         "register aen failed error %x\n", error);
8978
8979         mutex_unlock(&instance->reset_mutex);
8980         kfree(ev);
8981 }
8982
8983 /**
8984  * megasas_init - Driver load entry point
8985  */
8986 static int __init megasas_init(void)
8987 {
8988         int rval;
8989
8990         /*
8991          * Booted in kdump kernel, minimize memory footprints by
8992          * disabling few features
8993          */
8994         if (reset_devices) {
8995                 msix_vectors = 1;
8996                 rdpq_enable = 0;
8997                 dual_qdepth_disable = 1;
8998                 poll_queues = 0;
8999         }
9000
9001         /*
9002          * Announce driver version and other information
9003          */
9004         pr_info("megasas: %s\n", MEGASAS_VERSION);
9005
9006         megasas_dbg_lvl = 0;
9007         support_poll_for_event = 2;
9008         support_device_change = 1;
9009         support_nvme_encapsulation = true;
9010         support_pci_lane_margining = true;
9011
9012         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9013
9014         /*
9015          * Register character device node
9016          */
9017         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9018
9019         if (rval < 0) {
9020                 printk(KERN_DEBUG "megasas: failed to open device node\n");
9021                 return rval;
9022         }
9023
9024         megasas_mgmt_majorno = rval;
9025
9026         megasas_init_debugfs();
9027
9028         /*
9029          * Register ourselves as PCI hotplug module
9030          */
9031         rval = pci_register_driver(&megasas_pci_driver);
9032
9033         if (rval) {
9034                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9035                 goto err_pcidrv;
9036         }
9037
9038         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9039             (event_log_level > MFI_EVT_CLASS_DEAD)) {
9040                 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9041                 event_log_level = MFI_EVT_CLASS_CRITICAL;
9042         }
9043
9044         rval = driver_create_file(&megasas_pci_driver.driver,
9045                                   &driver_attr_version);
9046         if (rval)
9047                 goto err_dcf_attr_ver;
9048
9049         rval = driver_create_file(&megasas_pci_driver.driver,
9050                                   &driver_attr_release_date);
9051         if (rval)
9052                 goto err_dcf_rel_date;
9053
9054         rval = driver_create_file(&megasas_pci_driver.driver,
9055                                 &driver_attr_support_poll_for_event);
9056         if (rval)
9057                 goto err_dcf_support_poll_for_event;
9058
9059         rval = driver_create_file(&megasas_pci_driver.driver,
9060                                   &driver_attr_dbg_lvl);
9061         if (rval)
9062                 goto err_dcf_dbg_lvl;
9063         rval = driver_create_file(&megasas_pci_driver.driver,
9064                                 &driver_attr_support_device_change);
9065         if (rval)
9066                 goto err_dcf_support_device_change;
9067
9068         rval = driver_create_file(&megasas_pci_driver.driver,
9069                                   &driver_attr_support_nvme_encapsulation);
9070         if (rval)
9071                 goto err_dcf_support_nvme_encapsulation;
9072
9073         rval = driver_create_file(&megasas_pci_driver.driver,
9074                                   &driver_attr_support_pci_lane_margining);
9075         if (rval)
9076                 goto err_dcf_support_pci_lane_margining;
9077
9078         return rval;
9079
9080 err_dcf_support_pci_lane_margining:
9081         driver_remove_file(&megasas_pci_driver.driver,
9082                            &driver_attr_support_nvme_encapsulation);
9083
9084 err_dcf_support_nvme_encapsulation:
9085         driver_remove_file(&megasas_pci_driver.driver,
9086                            &driver_attr_support_device_change);
9087
9088 err_dcf_support_device_change:
9089         driver_remove_file(&megasas_pci_driver.driver,
9090                            &driver_attr_dbg_lvl);
9091 err_dcf_dbg_lvl:
9092         driver_remove_file(&megasas_pci_driver.driver,
9093                         &driver_attr_support_poll_for_event);
9094 err_dcf_support_poll_for_event:
9095         driver_remove_file(&megasas_pci_driver.driver,
9096                            &driver_attr_release_date);
9097 err_dcf_rel_date:
9098         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9099 err_dcf_attr_ver:
9100         pci_unregister_driver(&megasas_pci_driver);
9101 err_pcidrv:
9102         megasas_exit_debugfs();
9103         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9104         return rval;
9105 }
9106
9107 /**
9108  * megasas_exit - Driver unload entry point
9109  */
9110 static void __exit megasas_exit(void)
9111 {
9112         driver_remove_file(&megasas_pci_driver.driver,
9113                            &driver_attr_dbg_lvl);
9114         driver_remove_file(&megasas_pci_driver.driver,
9115                         &driver_attr_support_poll_for_event);
9116         driver_remove_file(&megasas_pci_driver.driver,
9117                         &driver_attr_support_device_change);
9118         driver_remove_file(&megasas_pci_driver.driver,
9119                            &driver_attr_release_date);
9120         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9121         driver_remove_file(&megasas_pci_driver.driver,
9122                            &driver_attr_support_nvme_encapsulation);
9123         driver_remove_file(&megasas_pci_driver.driver,
9124                            &driver_attr_support_pci_lane_margining);
9125
9126         pci_unregister_driver(&megasas_pci_driver);
9127         megasas_exit_debugfs();
9128         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9129 }
9130
9131 module_init(megasas_init);
9132 module_exit(megasas_exit);
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