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1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Linux MegaRAID driver for SAS based RAID controllers
4  *
5  *  Copyright (c) 2009-2013  LSI Corporation
6  *  Copyright (c) 2013-2016  Avago Technologies
7  *  Copyright (c) 2016-2018  Broadcom Inc.
8  *
9  *  FILE: megaraid_sas_fusion.c
10  *
11  *  Authors: Broadcom Inc.
12  *           Sumant Patro
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/uaccess.h>
31 #include <linux/fs.h>
32 #include <linux/compat.h>
33 #include <linux/blkdev.h>
34 #include <linux/mutex.h>
35 #include <linux/poll.h>
36 #include <linux/vmalloc.h>
37 #include <linux/workqueue.h>
38 #include <linux/irq_poll.h>
39
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_cmnd.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_host.h>
44 #include <scsi/scsi_dbg.h>
45 #include <linux/dmi.h>
46
47 #include "megaraid_sas_fusion.h"
48 #include "megaraid_sas.h"
49
50
51 extern void
52 megasas_complete_cmd(struct megasas_instance *instance,
53                      struct megasas_cmd *cmd, u8 alt_status);
54 int
55 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
56               int seconds);
57
58 int
59 megasas_clear_intr_fusion(struct megasas_instance *instance);
60
61 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
62
63 extern u32 megasas_dbg_lvl;
64 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
65                                   int initial);
66 extern struct megasas_mgmt_info megasas_mgmt_info;
67 extern unsigned int resetwaittime;
68 extern unsigned int dual_qdepth_disable;
69 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
70 static void megasas_free_reply_fusion(struct megasas_instance *instance);
71 static inline
72 void megasas_configure_queue_sizes(struct megasas_instance *instance);
73 static void megasas_fusion_crash_dump(struct megasas_instance *instance);
74
75 /**
76  * megasas_adp_reset_wait_for_ready -   initiate chip reset and wait for
77  *                                      controller to come to ready state
78  * @instance:                           adapter's soft state
79  * @do_adp_reset:                       If true, do a chip reset
80  * @ocr_context:                        If called from OCR context this will
81  *                                      be set to 1, else 0
82  *
83  * This function initiates a chip reset followed by a wait for controller to
84  * transition to ready state.
85  * During this, driver will block all access to PCI config space from userspace
86  */
87 int
88 megasas_adp_reset_wait_for_ready(struct megasas_instance *instance,
89                                  bool do_adp_reset,
90                                  int ocr_context)
91 {
92         int ret = FAILED;
93
94         /*
95          * Block access to PCI config space from userspace
96          * when diag reset is initiated from driver
97          */
98         if (megasas_dbg_lvl & OCR_DEBUG)
99                 dev_info(&instance->pdev->dev,
100                          "Block access to PCI config space %s %d\n",
101                          __func__, __LINE__);
102
103         pci_cfg_access_lock(instance->pdev);
104
105         if (do_adp_reset) {
106                 if (instance->instancet->adp_reset
107                         (instance, instance->reg_set))
108                         goto out;
109         }
110
111         /* Wait for FW to become ready */
112         if (megasas_transition_to_ready(instance, ocr_context)) {
113                 dev_warn(&instance->pdev->dev,
114                          "Failed to transition controller to ready for scsi%d.\n",
115                          instance->host->host_no);
116                 goto out;
117         }
118
119         ret = SUCCESS;
120 out:
121         if (megasas_dbg_lvl & OCR_DEBUG)
122                 dev_info(&instance->pdev->dev,
123                          "Unlock access to PCI config space %s %d\n",
124                          __func__, __LINE__);
125
126         pci_cfg_access_unlock(instance->pdev);
127
128         return ret;
129 }
130
131 /**
132  * megasas_check_same_4gb_region -      check if allocation
133  *                                      crosses same 4GB boundary or not
134  * @instance:                           adapter's soft instance
135  * @start_addr:                         start address of DMA allocation
136  * @size:                               size of allocation in bytes
137  * @return:                             true : allocation does not cross same
138  *                                      4GB boundary
139  *                                      false: allocation crosses same
140  *                                      4GB boundary
141  */
142 static inline bool megasas_check_same_4gb_region
143         (struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
144 {
145         dma_addr_t end_addr;
146
147         end_addr = start_addr + size;
148
149         if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
150                 dev_err(&instance->pdev->dev,
151                         "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
152                         (unsigned long long)start_addr,
153                         (unsigned long long)end_addr);
154                 return false;
155         }
156
157         return true;
158 }
159
160 /**
161  * megasas_enable_intr_fusion - Enables interrupts
162  * @instance:   adapter's soft instance
163  */
164 static void
165 megasas_enable_intr_fusion(struct megasas_instance *instance)
166 {
167         struct megasas_register_set __iomem *regs;
168         regs = instance->reg_set;
169
170         instance->mask_interrupts = 0;
171         /* For Thunderbolt/Invader also clear intr on enable */
172         writel(~0, &regs->outbound_intr_status);
173         readl(&regs->outbound_intr_status);
174
175         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
176
177         /* Dummy readl to force pci flush */
178         dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
179                  __func__, readl(&regs->outbound_intr_mask));
180 }
181
182 /**
183  * megasas_disable_intr_fusion - Disables interrupt
184  * @instance:   adapter's soft instance
185  */
186 static void
187 megasas_disable_intr_fusion(struct megasas_instance *instance)
188 {
189         u32 mask = 0xFFFFFFFF;
190         struct megasas_register_set __iomem *regs;
191         regs = instance->reg_set;
192         instance->mask_interrupts = 1;
193
194         writel(mask, &regs->outbound_intr_mask);
195         /* Dummy readl to force pci flush */
196         dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
197                  __func__, readl(&regs->outbound_intr_mask));
198 }
199
200 int
201 megasas_clear_intr_fusion(struct megasas_instance *instance)
202 {
203         u32 status;
204         struct megasas_register_set __iomem *regs;
205         regs = instance->reg_set;
206         /*
207          * Check if it is our interrupt
208          */
209         status = megasas_readl(instance,
210                                &regs->outbound_intr_status);
211
212         if (status & 1) {
213                 writel(status, &regs->outbound_intr_status);
214                 readl(&regs->outbound_intr_status);
215                 return 1;
216         }
217         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
218                 return 0;
219
220         return 1;
221 }
222
223 static inline void
224 megasas_sdev_busy_inc(struct megasas_instance *instance,
225                       struct scsi_cmnd *scmd)
226 {
227         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
228                 struct MR_PRIV_DEVICE *mr_device_priv_data =
229                         scmd->device->hostdata;
230                 atomic_inc(&mr_device_priv_data->sdev_priv_busy);
231         }
232 }
233
234 static inline void
235 megasas_sdev_busy_dec(struct megasas_instance *instance,
236                       struct scsi_cmnd *scmd)
237 {
238         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
239                 struct MR_PRIV_DEVICE *mr_device_priv_data =
240                         scmd->device->hostdata;
241                 atomic_dec(&mr_device_priv_data->sdev_priv_busy);
242         }
243 }
244
245 static inline int
246 megasas_sdev_busy_read(struct megasas_instance *instance,
247                        struct scsi_cmnd *scmd)
248 {
249         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
250                 struct MR_PRIV_DEVICE *mr_device_priv_data =
251                         scmd->device->hostdata;
252                 return atomic_read(&mr_device_priv_data->sdev_priv_busy);
253         }
254         return 0;
255 }
256
257 /**
258  * megasas_get_cmd_fusion -     Get a command from the free pool
259  * @instance:           Adapter soft state
260  * @blk_tag:            Command tag
261  *
262  * Returns a blk_tag indexed mpt frame
263  */
264 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
265                                                   *instance, u32 blk_tag)
266 {
267         struct fusion_context *fusion;
268
269         fusion = instance->ctrl_context;
270         return fusion->cmd_list[blk_tag];
271 }
272
273 /**
274  * megasas_return_cmd_fusion -  Return a cmd to free command pool
275  * @instance:           Adapter soft state
276  * @cmd:                Command packet to be returned to free command pool
277  */
278 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
279         struct megasas_cmd_fusion *cmd)
280 {
281         cmd->scmd = NULL;
282         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
283         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
284         cmd->cmd_completed = false;
285 }
286
287 /**
288  * megasas_write_64bit_req_desc -       PCI writes 64bit request descriptor
289  * @instance:                           Adapter soft state
290  * @req_desc:                           64bit Request descriptor
291  */
292 static void
293 megasas_write_64bit_req_desc(struct megasas_instance *instance,
294                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
295 {
296 #if defined(writeq) && defined(CONFIG_64BIT)
297         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
298                 le32_to_cpu(req_desc->u.low));
299         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
300 #else
301         unsigned long flags;
302         spin_lock_irqsave(&instance->hba_lock, flags);
303         writel(le32_to_cpu(req_desc->u.low),
304                 &instance->reg_set->inbound_low_queue_port);
305         writel(le32_to_cpu(req_desc->u.high),
306                 &instance->reg_set->inbound_high_queue_port);
307         spin_unlock_irqrestore(&instance->hba_lock, flags);
308 #endif
309 }
310
311 /**
312  * megasas_fire_cmd_fusion -    Sends command to the FW
313  * @instance:                   Adapter soft state
314  * @req_desc:                   32bit or 64bit Request descriptor
315  *
316  * Perform PCI Write. AERO SERIES supports 32 bit Descriptor.
317  * Prior to AERO_SERIES support 64 bit Descriptor.
318  */
319 static void
320 megasas_fire_cmd_fusion(struct megasas_instance *instance,
321                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
322 {
323         if (instance->atomic_desc_support)
324                 writel(le32_to_cpu(req_desc->u.low),
325                         &instance->reg_set->inbound_single_queue_port);
326         else
327                 megasas_write_64bit_req_desc(instance, req_desc);
328 }
329
330 /**
331  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
332  * @instance:           Adapter soft state
333  * @fw_boot_context:    Whether this function called during probe or after OCR
334  *
335  * This function is only for fusion controllers.
336  * Update host can queue, if firmware downgrade max supported firmware commands.
337  * Firmware upgrade case will be skipped because underlying firmware has
338  * more resource than exposed to the OS.
339  *
340  */
341 static void
342 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
343 {
344         u16 cur_max_fw_cmds = 0;
345         u16 ldio_threshold = 0;
346
347         /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */
348         if (instance->adapter_type < VENTURA_SERIES)
349                 cur_max_fw_cmds =
350                 megasas_readl(instance,
351                               &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF;
352
353         if (dual_qdepth_disable || !cur_max_fw_cmds)
354                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
355         else
356                 ldio_threshold =
357                         (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
358
359         dev_info(&instance->pdev->dev,
360                  "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n",
361                  cur_max_fw_cmds, ldio_threshold);
362
363         if (fw_boot_context == OCR_CONTEXT) {
364                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
365                 if (cur_max_fw_cmds < instance->max_fw_cmds) {
366                         instance->cur_can_queue =
367                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
368                                                 MEGASAS_FUSION_IOCTL_CMDS);
369                         instance->host->can_queue = instance->cur_can_queue;
370                         instance->ldio_threshold = ldio_threshold;
371                 }
372         } else {
373                 instance->max_fw_cmds = cur_max_fw_cmds;
374                 instance->ldio_threshold = ldio_threshold;
375
376                 if (reset_devices)
377                         instance->max_fw_cmds = min(instance->max_fw_cmds,
378                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
379                 /*
380                 * Reduce the max supported cmds by 1. This is to ensure that the
381                 * reply_q_sz (1 more than the max cmd that driver may send)
382                 * does not exceed max cmds that the FW can support
383                 */
384                 instance->max_fw_cmds = instance->max_fw_cmds-1;
385         }
386 }
387
388 static inline void
389 megasas_get_msix_index(struct megasas_instance *instance,
390                        struct scsi_cmnd *scmd,
391                        struct megasas_cmd_fusion *cmd,
392                        u8 data_arms)
393 {
394         if (instance->perf_mode == MR_BALANCED_PERF_MODE &&
395             (megasas_sdev_busy_read(instance, scmd) >
396              (data_arms * MR_DEVICE_HIGH_IOPS_DEPTH))) {
397                 cmd->request_desc->SCSIIO.MSIxIndex =
398                         mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
399                                         MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
400         } else if (instance->msix_load_balance) {
401                 cmd->request_desc->SCSIIO.MSIxIndex =
402                         (mega_mod64(atomic64_add_return(1, &instance->total_io_count),
403                                 instance->msix_vectors));
404         } else if (instance->host->nr_hw_queues > 1) {
405                 u32 tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
406
407                 cmd->request_desc->SCSIIO.MSIxIndex = blk_mq_unique_tag_to_hwq(tag) +
408                         instance->low_latency_index_start;
409         } else {
410                 cmd->request_desc->SCSIIO.MSIxIndex =
411                         instance->reply_map[raw_smp_processor_id()];
412         }
413 }
414
415 /**
416  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
417  * @instance:           Adapter soft state
418  */
419 void
420 megasas_free_cmds_fusion(struct megasas_instance *instance)
421 {
422         int i;
423         struct fusion_context *fusion = instance->ctrl_context;
424         struct megasas_cmd_fusion *cmd;
425
426         if (fusion->sense)
427                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
428                               fusion->sense_phys_addr);
429
430         /* SG */
431         if (fusion->cmd_list) {
432                 for (i = 0; i < instance->max_mpt_cmds; i++) {
433                         cmd = fusion->cmd_list[i];
434                         if (cmd) {
435                                 if (cmd->sg_frame)
436                                         dma_pool_free(fusion->sg_dma_pool,
437                                                       cmd->sg_frame,
438                                                       cmd->sg_frame_phys_addr);
439                         }
440                         kfree(cmd);
441                 }
442                 kfree(fusion->cmd_list);
443         }
444
445         if (fusion->sg_dma_pool) {
446                 dma_pool_destroy(fusion->sg_dma_pool);
447                 fusion->sg_dma_pool = NULL;
448         }
449         if (fusion->sense_dma_pool) {
450                 dma_pool_destroy(fusion->sense_dma_pool);
451                 fusion->sense_dma_pool = NULL;
452         }
453
454
455         /* Reply Frame, Desc*/
456         if (instance->is_rdpq)
457                 megasas_free_rdpq_fusion(instance);
458         else
459                 megasas_free_reply_fusion(instance);
460
461         /* Request Frame, Desc*/
462         if (fusion->req_frames_desc)
463                 dma_free_coherent(&instance->pdev->dev,
464                         fusion->request_alloc_sz, fusion->req_frames_desc,
465                         fusion->req_frames_desc_phys);
466         if (fusion->io_request_frames)
467                 dma_pool_free(fusion->io_request_frames_pool,
468                         fusion->io_request_frames,
469                         fusion->io_request_frames_phys);
470         if (fusion->io_request_frames_pool) {
471                 dma_pool_destroy(fusion->io_request_frames_pool);
472                 fusion->io_request_frames_pool = NULL;
473         }
474 }
475
476 /**
477  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
478  * @instance:                   Adapter soft state
479  *
480  */
481 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
482 {
483         int i;
484         u16 max_cmd;
485         struct fusion_context *fusion;
486         struct megasas_cmd_fusion *cmd;
487         int sense_sz;
488         u32 offset;
489
490         fusion = instance->ctrl_context;
491         max_cmd = instance->max_fw_cmds;
492         sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
493
494         fusion->sg_dma_pool =
495                         dma_pool_create("mr_sg", &instance->pdev->dev,
496                                 instance->max_chain_frame_sz,
497                                 MR_DEFAULT_NVME_PAGE_SIZE, 0);
498         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
499         fusion->sense_dma_pool =
500                         dma_pool_create("mr_sense", &instance->pdev->dev,
501                                 sense_sz, 64, 0);
502
503         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
504                 dev_err(&instance->pdev->dev,
505                         "Failed from %s %d\n",  __func__, __LINE__);
506                 return -ENOMEM;
507         }
508
509         fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
510                                        GFP_KERNEL, &fusion->sense_phys_addr);
511         if (!fusion->sense) {
512                 dev_err(&instance->pdev->dev,
513                         "failed from %s %d\n",  __func__, __LINE__);
514                 return -ENOMEM;
515         }
516
517         /* sense buffer, request frame and reply desc pool requires to be in
518          * same 4 gb region. Below function will check this.
519          * In case of failure, new pci pool will be created with updated
520          * alignment.
521          * Older allocation and pool will be destroyed.
522          * Alignment will be used such a way that next allocation if success,
523          * will always meet same 4gb region requirement.
524          * Actual requirement is not alignment, but we need start and end of
525          * DMA address must have same upper 32 bit address.
526          */
527
528         if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
529                                            sense_sz)) {
530                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
531                               fusion->sense_phys_addr);
532                 fusion->sense = NULL;
533                 dma_pool_destroy(fusion->sense_dma_pool);
534
535                 fusion->sense_dma_pool =
536                         dma_pool_create("mr_sense_align", &instance->pdev->dev,
537                                         sense_sz, roundup_pow_of_two(sense_sz),
538                                         0);
539                 if (!fusion->sense_dma_pool) {
540                         dev_err(&instance->pdev->dev,
541                                 "Failed from %s %d\n",  __func__, __LINE__);
542                         return -ENOMEM;
543                 }
544                 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
545                                                GFP_KERNEL,
546                                                &fusion->sense_phys_addr);
547                 if (!fusion->sense) {
548                         dev_err(&instance->pdev->dev,
549                                 "failed from %s %d\n",  __func__, __LINE__);
550                         return -ENOMEM;
551                 }
552         }
553
554         /*
555          * Allocate and attach a frame to each of the commands in cmd_list
556          */
557         for (i = 0; i < max_cmd; i++) {
558                 cmd = fusion->cmd_list[i];
559                 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
560                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
561
562                 offset = SCSI_SENSE_BUFFERSIZE * i;
563                 cmd->sense = (u8 *)fusion->sense + offset;
564                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
565
566                 if (!cmd->sg_frame) {
567                         dev_err(&instance->pdev->dev,
568                                 "Failed from %s %d\n",  __func__, __LINE__);
569                         return -ENOMEM;
570                 }
571         }
572
573         /* create sense buffer for the raid 1/10 fp */
574         for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
575                 cmd = fusion->cmd_list[i];
576                 offset = SCSI_SENSE_BUFFERSIZE * i;
577                 cmd->sense = (u8 *)fusion->sense + offset;
578                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
579
580         }
581
582         return 0;
583 }
584
585 static int
586 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
587 {
588         u32 max_mpt_cmd, i, j;
589         struct fusion_context *fusion;
590
591         fusion = instance->ctrl_context;
592
593         max_mpt_cmd = instance->max_mpt_cmds;
594
595         /*
596          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
597          * Allocate the dynamic array first and then allocate individual
598          * commands.
599          */
600         fusion->cmd_list =
601                 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
602                         GFP_KERNEL);
603         if (!fusion->cmd_list) {
604                 dev_err(&instance->pdev->dev,
605                         "Failed from %s %d\n",  __func__, __LINE__);
606                 return -ENOMEM;
607         }
608
609         for (i = 0; i < max_mpt_cmd; i++) {
610                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
611                                               GFP_KERNEL);
612                 if (!fusion->cmd_list[i]) {
613                         for (j = 0; j < i; j++)
614                                 kfree(fusion->cmd_list[j]);
615                         kfree(fusion->cmd_list);
616                         dev_err(&instance->pdev->dev,
617                                 "Failed from %s %d\n",  __func__, __LINE__);
618                         return -ENOMEM;
619                 }
620         }
621
622         return 0;
623 }
624
625 static int
626 megasas_alloc_request_fusion(struct megasas_instance *instance)
627 {
628         struct fusion_context *fusion;
629
630         fusion = instance->ctrl_context;
631
632 retry_alloc:
633         fusion->io_request_frames_pool =
634                         dma_pool_create("mr_ioreq", &instance->pdev->dev,
635                                 fusion->io_frames_alloc_sz, 16, 0);
636
637         if (!fusion->io_request_frames_pool) {
638                 dev_err(&instance->pdev->dev,
639                         "Failed from %s %d\n",  __func__, __LINE__);
640                 return -ENOMEM;
641         }
642
643         fusion->io_request_frames =
644                         dma_pool_alloc(fusion->io_request_frames_pool,
645                                 GFP_KERNEL | __GFP_NOWARN,
646                                 &fusion->io_request_frames_phys);
647         if (!fusion->io_request_frames) {
648                 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
649                         instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
650                         dma_pool_destroy(fusion->io_request_frames_pool);
651                         megasas_configure_queue_sizes(instance);
652                         goto retry_alloc;
653                 } else {
654                         dev_err(&instance->pdev->dev,
655                                 "Failed from %s %d\n",  __func__, __LINE__);
656                         return -ENOMEM;
657                 }
658         }
659
660         if (!megasas_check_same_4gb_region(instance,
661                                            fusion->io_request_frames_phys,
662                                            fusion->io_frames_alloc_sz)) {
663                 dma_pool_free(fusion->io_request_frames_pool,
664                               fusion->io_request_frames,
665                               fusion->io_request_frames_phys);
666                 fusion->io_request_frames = NULL;
667                 dma_pool_destroy(fusion->io_request_frames_pool);
668
669                 fusion->io_request_frames_pool =
670                         dma_pool_create("mr_ioreq_align",
671                                         &instance->pdev->dev,
672                                         fusion->io_frames_alloc_sz,
673                                         roundup_pow_of_two(fusion->io_frames_alloc_sz),
674                                         0);
675
676                 if (!fusion->io_request_frames_pool) {
677                         dev_err(&instance->pdev->dev,
678                                 "Failed from %s %d\n",  __func__, __LINE__);
679                         return -ENOMEM;
680                 }
681
682                 fusion->io_request_frames =
683                         dma_pool_alloc(fusion->io_request_frames_pool,
684                                        GFP_KERNEL | __GFP_NOWARN,
685                                        &fusion->io_request_frames_phys);
686
687                 if (!fusion->io_request_frames) {
688                         dev_err(&instance->pdev->dev,
689                                 "Failed from %s %d\n",  __func__, __LINE__);
690                         return -ENOMEM;
691                 }
692         }
693
694         fusion->req_frames_desc =
695                 dma_alloc_coherent(&instance->pdev->dev,
696                                    fusion->request_alloc_sz,
697                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
698         if (!fusion->req_frames_desc) {
699                 dev_err(&instance->pdev->dev,
700                         "Failed from %s %d\n",  __func__, __LINE__);
701                 return -ENOMEM;
702         }
703
704         return 0;
705 }
706
707 static int
708 megasas_alloc_reply_fusion(struct megasas_instance *instance)
709 {
710         int i, count;
711         struct fusion_context *fusion;
712         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
713         fusion = instance->ctrl_context;
714
715         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
716         count += instance->iopoll_q_count;
717
718         fusion->reply_frames_desc_pool =
719                         dma_pool_create("mr_reply", &instance->pdev->dev,
720                                 fusion->reply_alloc_sz * count, 16, 0);
721
722         if (!fusion->reply_frames_desc_pool) {
723                 dev_err(&instance->pdev->dev,
724                         "Failed from %s %d\n",  __func__, __LINE__);
725                 return -ENOMEM;
726         }
727
728         fusion->reply_frames_desc[0] =
729                 dma_pool_alloc(fusion->reply_frames_desc_pool,
730                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
731         if (!fusion->reply_frames_desc[0]) {
732                 dev_err(&instance->pdev->dev,
733                         "Failed from %s %d\n",  __func__, __LINE__);
734                 return -ENOMEM;
735         }
736
737         if (!megasas_check_same_4gb_region(instance,
738                                            fusion->reply_frames_desc_phys[0],
739                                            (fusion->reply_alloc_sz * count))) {
740                 dma_pool_free(fusion->reply_frames_desc_pool,
741                               fusion->reply_frames_desc[0],
742                               fusion->reply_frames_desc_phys[0]);
743                 fusion->reply_frames_desc[0] = NULL;
744                 dma_pool_destroy(fusion->reply_frames_desc_pool);
745
746                 fusion->reply_frames_desc_pool =
747                         dma_pool_create("mr_reply_align",
748                                         &instance->pdev->dev,
749                                         fusion->reply_alloc_sz * count,
750                                         roundup_pow_of_two(fusion->reply_alloc_sz * count),
751                                         0);
752
753                 if (!fusion->reply_frames_desc_pool) {
754                         dev_err(&instance->pdev->dev,
755                                 "Failed from %s %d\n",  __func__, __LINE__);
756                         return -ENOMEM;
757                 }
758
759                 fusion->reply_frames_desc[0] =
760                         dma_pool_alloc(fusion->reply_frames_desc_pool,
761                                        GFP_KERNEL,
762                                        &fusion->reply_frames_desc_phys[0]);
763
764                 if (!fusion->reply_frames_desc[0]) {
765                         dev_err(&instance->pdev->dev,
766                                 "Failed from %s %d\n",  __func__, __LINE__);
767                         return -ENOMEM;
768                 }
769         }
770
771         reply_desc = fusion->reply_frames_desc[0];
772         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
773                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
774
775         /* This is not a rdpq mode, but driver still populate
776          * reply_frame_desc array to use same msix index in ISR path.
777          */
778         for (i = 0; i < (count - 1); i++)
779                 fusion->reply_frames_desc[i + 1] =
780                         fusion->reply_frames_desc[i] +
781                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
782
783         return 0;
784 }
785
786 static int
787 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
788 {
789         int i, j, k, msix_count;
790         struct fusion_context *fusion;
791         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
792         union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
793         dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
794         u8 dma_alloc_count, abs_index;
795         u32 chunk_size, array_size, offset;
796
797         fusion = instance->ctrl_context;
798         chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
799         array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
800                      MAX_MSIX_QUEUES_FUSION;
801
802         fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
803                                                array_size, &fusion->rdpq_phys,
804                                                GFP_KERNEL);
805         if (!fusion->rdpq_virt) {
806                 dev_err(&instance->pdev->dev,
807                         "Failed from %s %d\n",  __func__, __LINE__);
808                 return -ENOMEM;
809         }
810
811         msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
812         msix_count += instance->iopoll_q_count;
813
814         fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
815                                                          &instance->pdev->dev,
816                                                          chunk_size, 16, 0);
817         fusion->reply_frames_desc_pool_align =
818                                 dma_pool_create("mr_rdpq_align",
819                                                 &instance->pdev->dev,
820                                                 chunk_size,
821                                                 roundup_pow_of_two(chunk_size),
822                                                 0);
823
824         if (!fusion->reply_frames_desc_pool ||
825             !fusion->reply_frames_desc_pool_align) {
826                 dev_err(&instance->pdev->dev,
827                         "Failed from %s %d\n",  __func__, __LINE__);
828                 return -ENOMEM;
829         }
830
831 /*
832  * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
833  * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
834  * within 4GB boundary and also reply queues in a set must have same
835  * upper 32-bits in their memory address. so here driver is allocating the
836  * DMA'able memory for reply queues according. Driver uses limitation of
837  * VENTURA_SERIES to manage INVADER_SERIES as well.
838  */
839         dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
840
841         for (i = 0; i < dma_alloc_count; i++) {
842                 rdpq_chunk_virt[i] =
843                         dma_pool_alloc(fusion->reply_frames_desc_pool,
844                                        GFP_KERNEL, &rdpq_chunk_phys[i]);
845                 if (!rdpq_chunk_virt[i]) {
846                         dev_err(&instance->pdev->dev,
847                                 "Failed from %s %d\n",  __func__, __LINE__);
848                         return -ENOMEM;
849                 }
850                 /* reply desc pool requires to be in same 4 gb region.
851                  * Below function will check this.
852                  * In case of failure, new pci pool will be created with updated
853                  * alignment.
854                  * For RDPQ buffers, driver always allocate two separate pci pool.
855                  * Alignment will be used such a way that next allocation if
856                  * success, will always meet same 4gb region requirement.
857                  * rdpq_tracker keep track of each buffer's physical,
858                  * virtual address and pci pool descriptor. It will help driver
859                  * while freeing the resources.
860                  *
861                  */
862                 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
863                                                    chunk_size)) {
864                         dma_pool_free(fusion->reply_frames_desc_pool,
865                                       rdpq_chunk_virt[i],
866                                       rdpq_chunk_phys[i]);
867
868                         rdpq_chunk_virt[i] =
869                                 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
870                                                GFP_KERNEL, &rdpq_chunk_phys[i]);
871                         if (!rdpq_chunk_virt[i]) {
872                                 dev_err(&instance->pdev->dev,
873                                         "Failed from %s %d\n",
874                                         __func__, __LINE__);
875                                 return -ENOMEM;
876                         }
877                         fusion->rdpq_tracker[i].dma_pool_ptr =
878                                         fusion->reply_frames_desc_pool_align;
879                 } else {
880                         fusion->rdpq_tracker[i].dma_pool_ptr =
881                                         fusion->reply_frames_desc_pool;
882                 }
883
884                 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
885                 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
886         }
887
888         for (k = 0; k < dma_alloc_count; k++) {
889                 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
890                         abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
891
892                         if (abs_index == msix_count)
893                                 break;
894                         offset = fusion->reply_alloc_sz * i;
895                         fusion->rdpq_virt[abs_index].RDPQBaseAddress =
896                                         cpu_to_le64(rdpq_chunk_phys[k] + offset);
897                         fusion->reply_frames_desc_phys[abs_index] =
898                                         rdpq_chunk_phys[k] + offset;
899                         fusion->reply_frames_desc[abs_index] =
900                                         (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
901
902                         reply_desc = fusion->reply_frames_desc[abs_index];
903                         for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
904                                 reply_desc->Words = ULLONG_MAX;
905                 }
906         }
907
908         return 0;
909 }
910
911 static void
912 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
913
914         int i;
915         struct fusion_context *fusion;
916
917         fusion = instance->ctrl_context;
918
919         for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
920                 if (fusion->rdpq_tracker[i].pool_entry_virt)
921                         dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
922                                       fusion->rdpq_tracker[i].pool_entry_virt,
923                                       fusion->rdpq_tracker[i].pool_entry_phys);
924
925         }
926
927         dma_pool_destroy(fusion->reply_frames_desc_pool);
928         dma_pool_destroy(fusion->reply_frames_desc_pool_align);
929
930         if (fusion->rdpq_virt)
931                 dma_free_coherent(&instance->pdev->dev,
932                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
933                         fusion->rdpq_virt, fusion->rdpq_phys);
934 }
935
936 static void
937 megasas_free_reply_fusion(struct megasas_instance *instance) {
938
939         struct fusion_context *fusion;
940
941         fusion = instance->ctrl_context;
942
943         if (fusion->reply_frames_desc[0])
944                 dma_pool_free(fusion->reply_frames_desc_pool,
945                         fusion->reply_frames_desc[0],
946                         fusion->reply_frames_desc_phys[0]);
947
948         dma_pool_destroy(fusion->reply_frames_desc_pool);
949
950 }
951
952
953 /**
954  * megasas_alloc_cmds_fusion -  Allocates the command packets
955  * @instance:           Adapter soft state
956  *
957  *
958  * Each frame has a 32-bit field called context. This context is used to get
959  * back the megasas_cmd_fusion from the frame when a frame gets completed
960  * In this driver, the 32 bit values are the indices into an array cmd_list.
961  * This array is used only to look up the megasas_cmd_fusion given the context.
962  * The free commands themselves are maintained in a linked list called cmd_pool.
963  *
964  * cmds are formed in the io_request and sg_frame members of the
965  * megasas_cmd_fusion. The context field is used to get a request descriptor
966  * and is used as SMID of the cmd.
967  * SMID value range is from 1 to max_fw_cmds.
968  */
969 static int
970 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
971 {
972         int i;
973         struct fusion_context *fusion;
974         struct megasas_cmd_fusion *cmd;
975         u32 offset;
976         dma_addr_t io_req_base_phys;
977         u8 *io_req_base;
978
979
980         fusion = instance->ctrl_context;
981
982         if (megasas_alloc_request_fusion(instance))
983                 goto fail_exit;
984
985         if (instance->is_rdpq) {
986                 if (megasas_alloc_rdpq_fusion(instance))
987                         goto fail_exit;
988         } else
989                 if (megasas_alloc_reply_fusion(instance))
990                         goto fail_exit;
991
992         if (megasas_alloc_cmdlist_fusion(instance))
993                 goto fail_exit;
994
995         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
996         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
997         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
998
999         /*
1000          * Add all the commands to command pool (fusion->cmd_pool)
1001          */
1002
1003         /* SMID 0 is reserved. Set SMID/index from 1 */
1004         for (i = 0; i < instance->max_mpt_cmds; i++) {
1005                 cmd = fusion->cmd_list[i];
1006                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
1007                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
1008                 cmd->index = i + 1;
1009                 cmd->scmd = NULL;
1010                 cmd->sync_cmd_idx =
1011                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
1012                                 (i - instance->max_scsi_cmds) :
1013                                 (u32)ULONG_MAX; /* Set to Invalid */
1014                 cmd->instance = instance;
1015                 cmd->io_request =
1016                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
1017                   (io_req_base + offset);
1018                 memset(cmd->io_request, 0,
1019                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
1020                 cmd->io_request_phys_addr = io_req_base_phys + offset;
1021                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
1022         }
1023
1024         if (megasas_create_sg_sense_fusion(instance))
1025                 goto fail_exit;
1026
1027         return 0;
1028
1029 fail_exit:
1030         megasas_free_cmds_fusion(instance);
1031         return -ENOMEM;
1032 }
1033
1034 /**
1035  * wait_and_poll -      Issues a polling command
1036  * @instance:                   Adapter soft state
1037  * @cmd:                        Command packet to be issued
1038  * @seconds:                    Maximum poll time
1039  *
1040  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
1041  */
1042 int
1043 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
1044         int seconds)
1045 {
1046         int i;
1047         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1048         u32 status_reg;
1049
1050         u32 msecs = seconds * 1000;
1051
1052         /*
1053          * Wait for cmd_status to change
1054          */
1055         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
1056                 rmb();
1057                 msleep(20);
1058                 if (!(i % 5000)) {
1059                         status_reg = instance->instancet->read_fw_status_reg(instance)
1060                                         & MFI_STATE_MASK;
1061                         if (status_reg == MFI_STATE_FAULT)
1062                                 break;
1063                 }
1064         }
1065
1066         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
1067                 return DCMD_TIMEOUT;
1068         else if (frame_hdr->cmd_status == MFI_STAT_OK)
1069                 return DCMD_SUCCESS;
1070         else
1071                 return DCMD_FAILED;
1072 }
1073
1074 /**
1075  * megasas_ioc_init_fusion -    Initializes the FW
1076  * @instance:           Adapter soft state
1077  *
1078  * Issues the IOC Init cmd
1079  */
1080 int
1081 megasas_ioc_init_fusion(struct megasas_instance *instance)
1082 {
1083         struct megasas_init_frame *init_frame;
1084         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
1085         dma_addr_t      ioc_init_handle;
1086         struct megasas_cmd *cmd;
1087         u8 ret, cur_rdpq_mode;
1088         struct fusion_context *fusion;
1089         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
1090         int i;
1091         struct megasas_header *frame_hdr;
1092         const char *sys_info;
1093         MFI_CAPABILITIES *drv_ops;
1094         u32 scratch_pad_1;
1095         ktime_t time;
1096         bool cur_fw_64bit_dma_capable;
1097         bool cur_intr_coalescing;
1098
1099         fusion = instance->ctrl_context;
1100
1101         ioc_init_handle = fusion->ioc_init_request_phys;
1102         IOCInitMessage = fusion->ioc_init_request;
1103
1104         cmd = fusion->ioc_init_cmd;
1105
1106         scratch_pad_1 = megasas_readl
1107                 (instance, &instance->reg_set->outbound_scratch_pad_1);
1108
1109         cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
1110
1111         if (instance->adapter_type == INVADER_SERIES) {
1112                 cur_fw_64bit_dma_capable =
1113                         (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
1114
1115                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1116                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1117                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1118                         megaraid_sas_kill_hba(instance);
1119                         ret = 1;
1120                         goto fail_fw_init;
1121                 }
1122         }
1123
1124         if (instance->is_rdpq && !cur_rdpq_mode) {
1125                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1126                         " from RDPQ mode to non RDPQ mode\n");
1127                 ret = 1;
1128                 goto fail_fw_init;
1129         }
1130
1131         cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
1132                                                         true : false;
1133
1134         if ((instance->low_latency_index_start ==
1135                 MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing)
1136                 instance->perf_mode = MR_BALANCED_PERF_MODE;
1137
1138         dev_info(&instance->pdev->dev, "Performance mode :%s (latency index = %d)\n",
1139                 MEGASAS_PERF_MODE_2STR(instance->perf_mode),
1140                 instance->low_latency_index_start);
1141
1142         instance->fw_sync_cache_support = (scratch_pad_1 &
1143                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1144         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1145                  instance->fw_sync_cache_support ? "Yes" : "No");
1146
1147         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1148
1149         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1150         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1151         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1152         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1153         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1154
1155         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1156         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1157                         cpu_to_le64(fusion->rdpq_phys) :
1158                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1159         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1160                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1161         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1162         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1163         IOCInitMessage->HostMSIxVectors = instance->msix_vectors + instance->iopoll_q_count;
1164         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1165
1166         time = ktime_get_real();
1167         /* Convert to milliseconds as per FW requirement */
1168         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1169
1170         init_frame = (struct megasas_init_frame *)cmd->frame;
1171         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1172
1173         frame_hdr = &cmd->frame->hdr;
1174         frame_hdr->cmd_status = 0xFF;
1175         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1176
1177         init_frame->cmd = MFI_CMD_INIT;
1178         init_frame->cmd_status = 0xFF;
1179
1180         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1181
1182         /* driver support Extended MSIX */
1183         if (instance->adapter_type >= INVADER_SERIES)
1184                 drv_ops->mfi_capabilities.support_additional_msix = 1;
1185         /* driver supports HA / Remote LUN over Fast Path interface */
1186         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1187
1188         drv_ops->mfi_capabilities.support_max_255lds = 1;
1189         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1190         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1191
1192         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1193                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1194
1195         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1196         if (!dual_qdepth_disable)
1197                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1198
1199         drv_ops->mfi_capabilities.support_qd_throttling = 1;
1200         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1201         drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1202         drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
1203
1204         if (instance->consistent_mask_64bit)
1205                 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1206
1207         /* Convert capability to LE32 */
1208         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1209
1210         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1211         if (instance->system_info_buf && sys_info) {
1212                 memcpy(instance->system_info_buf->systemId, sys_info,
1213                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1214                 instance->system_info_buf->systemIdLength =
1215                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1216                 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1217                 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1218         }
1219
1220         init_frame->queue_info_new_phys_addr_hi =
1221                 cpu_to_le32(upper_32_bits(ioc_init_handle));
1222         init_frame->queue_info_new_phys_addr_lo =
1223                 cpu_to_le32(lower_32_bits(ioc_init_handle));
1224         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1225
1226         /*
1227          * Each bit in replyqueue_mask represents one group of MSI-x vectors
1228          * (each group has 8 vectors)
1229          */
1230         switch (instance->perf_mode) {
1231         case MR_BALANCED_PERF_MODE:
1232                 init_frame->replyqueue_mask =
1233                        cpu_to_le16(~(~0 << instance->low_latency_index_start/8));
1234                 break;
1235         case MR_IOPS_PERF_MODE:
1236                 init_frame->replyqueue_mask =
1237                        cpu_to_le16(~(~0 << instance->msix_vectors/8));
1238                 break;
1239         }
1240
1241
1242         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1243         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1244         req_desc.MFAIo.RequestFlags =
1245                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1246                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1247
1248         /*
1249          * disable the intr before firing the init frame
1250          */
1251         instance->instancet->disable_intr(instance);
1252
1253         for (i = 0; i < (10 * 1000); i += 20) {
1254                 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1255                         msleep(20);
1256                 else
1257                         break;
1258         }
1259
1260         /* For AERO also, IOC_INIT requires 64 bit descriptor write */
1261         megasas_write_64bit_req_desc(instance, &req_desc);
1262
1263         wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1264
1265         frame_hdr = &cmd->frame->hdr;
1266         if (frame_hdr->cmd_status != 0) {
1267                 ret = 1;
1268                 goto fail_fw_init;
1269         }
1270
1271         if (instance->adapter_type >= AERO_SERIES) {
1272                 scratch_pad_1 = megasas_readl
1273                         (instance, &instance->reg_set->outbound_scratch_pad_1);
1274
1275                 instance->atomic_desc_support =
1276                         (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0;
1277
1278                 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n",
1279                         instance->atomic_desc_support ? "Yes" : "No");
1280         }
1281
1282         return 0;
1283
1284 fail_fw_init:
1285         dev_err(&instance->pdev->dev,
1286                 "Init cmd return status FAILED for SCSI host %d\n",
1287                 instance->host->host_no);
1288
1289         return ret;
1290 }
1291
1292 /**
1293  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
1294  * @instance:           Adapter soft state
1295  * @pend:               set to 1, if it is pended jbod map.
1296  *
1297  * Issue Jbod map to the firmware. If it is pended command,
1298  * issue command and return. If it is first instance of jbod map
1299  * issue and receive command.
1300  */
1301 int
1302 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1303         int ret = 0;
1304         size_t pd_seq_map_sz;
1305         struct megasas_cmd *cmd;
1306         struct megasas_dcmd_frame *dcmd;
1307         struct fusion_context *fusion = instance->ctrl_context;
1308         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1309         dma_addr_t pd_seq_h;
1310
1311         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1312         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1313         pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES);
1314
1315         cmd = megasas_get_cmd(instance);
1316         if (!cmd) {
1317                 dev_err(&instance->pdev->dev,
1318                         "Could not get mfi cmd. Fail from %s %d\n",
1319                         __func__, __LINE__);
1320                 return -ENOMEM;
1321         }
1322
1323         dcmd = &cmd->frame->dcmd;
1324
1325         memset(pd_sync, 0, pd_seq_map_sz);
1326         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1327
1328         if (pend) {
1329                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1330                 dcmd->flags = MFI_FRAME_DIR_WRITE;
1331                 instance->jbod_seq_cmd = cmd;
1332         } else {
1333                 dcmd->flags = MFI_FRAME_DIR_READ;
1334         }
1335
1336         dcmd->cmd = MFI_CMD_DCMD;
1337         dcmd->cmd_status = 0xFF;
1338         dcmd->sge_count = 1;
1339         dcmd->timeout = 0;
1340         dcmd->pad_0 = 0;
1341         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1342         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1343
1344         megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1345
1346         if (pend) {
1347                 instance->instancet->issue_dcmd(instance, cmd);
1348                 return 0;
1349         }
1350
1351         /* Below code is only for non pended DCMD */
1352         if (!instance->mask_interrupts)
1353                 ret = megasas_issue_blocked_cmd(instance, cmd,
1354                         MFI_IO_TIMEOUT_SECS);
1355         else
1356                 ret = megasas_issue_polled(instance, cmd);
1357
1358         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1359                 dev_warn(&instance->pdev->dev,
1360                         "driver supports max %d JBOD, but FW reports %d\n",
1361                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1362                 ret = -EINVAL;
1363         }
1364
1365         if (ret == DCMD_TIMEOUT)
1366                 dev_warn(&instance->pdev->dev,
1367                          "%s DCMD timed out, continue without JBOD sequence map\n",
1368                          __func__);
1369
1370         if (ret == DCMD_SUCCESS)
1371                 instance->pd_seq_map_id++;
1372
1373         megasas_return_cmd(instance, cmd);
1374         return ret;
1375 }
1376
1377 /*
1378  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1379  * @instance:                           Adapter soft state
1380  * @pend:                               Pend the command or not
1381  * Issues an internal command (DCMD) to get the FW's controller PD
1382  * list structure.  This information is mainly used to find out SYSTEM
1383  * supported by the FW.
1384  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1385  * dcmd.mbox.b[0]       - number of LDs being sync'd
1386  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1387  *                      - 1 - pend till config change
1388  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1389  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1390  *                              uses extended struct MR_FW_RAID_MAP_EXT
1391  */
1392 static int
1393 megasas_get_ld_map_info(struct megasas_instance *instance)
1394 {
1395         int ret = 0;
1396         struct megasas_cmd *cmd;
1397         struct megasas_dcmd_frame *dcmd;
1398         void *ci;
1399         dma_addr_t ci_h = 0;
1400         u32 size_map_info;
1401         struct fusion_context *fusion;
1402
1403         cmd = megasas_get_cmd(instance);
1404
1405         if (!cmd) {
1406                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1407                 return -ENOMEM;
1408         }
1409
1410         fusion = instance->ctrl_context;
1411
1412         if (!fusion) {
1413                 megasas_return_cmd(instance, cmd);
1414                 return -ENXIO;
1415         }
1416
1417         dcmd = &cmd->frame->dcmd;
1418
1419         size_map_info = fusion->current_map_sz;
1420
1421         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1422         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1423
1424         if (!ci) {
1425                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1426                 megasas_return_cmd(instance, cmd);
1427                 return -ENOMEM;
1428         }
1429
1430         memset(ci, 0, fusion->max_map_sz);
1431         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1432         dcmd->cmd = MFI_CMD_DCMD;
1433         dcmd->cmd_status = 0xFF;
1434         dcmd->sge_count = 1;
1435         dcmd->flags = MFI_FRAME_DIR_READ;
1436         dcmd->timeout = 0;
1437         dcmd->pad_0 = 0;
1438         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1439         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1440
1441         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1442
1443         if (!instance->mask_interrupts)
1444                 ret = megasas_issue_blocked_cmd(instance, cmd,
1445                         MFI_IO_TIMEOUT_SECS);
1446         else
1447                 ret = megasas_issue_polled(instance, cmd);
1448
1449         if (ret == DCMD_TIMEOUT)
1450                 dev_warn(&instance->pdev->dev,
1451                          "%s DCMD timed out, RAID map is disabled\n",
1452                          __func__);
1453
1454         megasas_return_cmd(instance, cmd);
1455
1456         return ret;
1457 }
1458
1459 u8
1460 megasas_get_map_info(struct megasas_instance *instance)
1461 {
1462         struct fusion_context *fusion = instance->ctrl_context;
1463
1464         fusion->fast_path_io = 0;
1465         if (!megasas_get_ld_map_info(instance)) {
1466                 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1467                         fusion->fast_path_io = 1;
1468                         return 0;
1469                 }
1470         }
1471         return 1;
1472 }
1473
1474 /*
1475  * megasas_sync_map_info -      Returns FW's ld_map structure
1476  * @instance:                           Adapter soft state
1477  *
1478  * Issues an internal command (DCMD) to get the FW's controller PD
1479  * list structure.  This information is mainly used to find out SYSTEM
1480  * supported by the FW.
1481  */
1482 int
1483 megasas_sync_map_info(struct megasas_instance *instance)
1484 {
1485         int i;
1486         struct megasas_cmd *cmd;
1487         struct megasas_dcmd_frame *dcmd;
1488         u16 num_lds;
1489         struct fusion_context *fusion;
1490         struct MR_LD_TARGET_SYNC *ci = NULL;
1491         struct MR_DRV_RAID_MAP_ALL *map;
1492         struct MR_LD_RAID  *raid;
1493         struct MR_LD_TARGET_SYNC *ld_sync;
1494         dma_addr_t ci_h = 0;
1495         u32 size_map_info;
1496
1497         cmd = megasas_get_cmd(instance);
1498
1499         if (!cmd) {
1500                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1501                 return -ENOMEM;
1502         }
1503
1504         fusion = instance->ctrl_context;
1505
1506         if (!fusion) {
1507                 megasas_return_cmd(instance, cmd);
1508                 return 1;
1509         }
1510
1511         map = fusion->ld_drv_map[instance->map_id & 1];
1512
1513         num_lds = le16_to_cpu(map->raidMap.ldCount);
1514
1515         dcmd = &cmd->frame->dcmd;
1516
1517         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1518
1519         ci = (struct MR_LD_TARGET_SYNC *)
1520           fusion->ld_map[(instance->map_id - 1) & 1];
1521         memset(ci, 0, fusion->max_map_sz);
1522
1523         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1524
1525         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1526
1527         for (i = 0; i < num_lds; i++, ld_sync++) {
1528                 raid = MR_LdRaidGet(i, map);
1529                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1530                 ld_sync->seqNum = raid->seqNum;
1531         }
1532
1533         size_map_info = fusion->current_map_sz;
1534
1535         dcmd->cmd = MFI_CMD_DCMD;
1536         dcmd->cmd_status = 0xFF;
1537         dcmd->sge_count = 1;
1538         dcmd->flags = MFI_FRAME_DIR_WRITE;
1539         dcmd->timeout = 0;
1540         dcmd->pad_0 = 0;
1541         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1542         dcmd->mbox.b[0] = num_lds;
1543         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1544         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1545
1546         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1547
1548         instance->map_update_cmd = cmd;
1549
1550         instance->instancet->issue_dcmd(instance, cmd);
1551
1552         return 0;
1553 }
1554
1555 /*
1556  * meagasas_display_intel_branding - Display branding string
1557  * @instance: per adapter object
1558  *
1559  * Return nothing.
1560  */
1561 static void
1562 megasas_display_intel_branding(struct megasas_instance *instance)
1563 {
1564         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1565                 return;
1566
1567         switch (instance->pdev->device) {
1568         case PCI_DEVICE_ID_LSI_INVADER:
1569                 switch (instance->pdev->subsystem_device) {
1570                 case MEGARAID_INTEL_RS3DC080_SSDID:
1571                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1572                                 instance->host->host_no,
1573                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1574                         break;
1575                 case MEGARAID_INTEL_RS3DC040_SSDID:
1576                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1577                                 instance->host->host_no,
1578                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1579                         break;
1580                 case MEGARAID_INTEL_RS3SC008_SSDID:
1581                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1582                                 instance->host->host_no,
1583                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1584                         break;
1585                 case MEGARAID_INTEL_RS3MC044_SSDID:
1586                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1587                                 instance->host->host_no,
1588                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1589                         break;
1590                 default:
1591                         break;
1592                 }
1593                 break;
1594         case PCI_DEVICE_ID_LSI_FURY:
1595                 switch (instance->pdev->subsystem_device) {
1596                 case MEGARAID_INTEL_RS3WC080_SSDID:
1597                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1598                                 instance->host->host_no,
1599                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1600                         break;
1601                 case MEGARAID_INTEL_RS3WC040_SSDID:
1602                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1603                                 instance->host->host_no,
1604                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1605                         break;
1606                 default:
1607                         break;
1608                 }
1609                 break;
1610         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1611         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1612                 switch (instance->pdev->subsystem_device) {
1613                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1614                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1615                                 instance->host->host_no,
1616                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1617                         break;
1618                 default:
1619                         break;
1620                 }
1621                 break;
1622         default:
1623                 break;
1624         }
1625 }
1626
1627 /**
1628  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1629  * @instance:                           Adapter soft state
1630  *
1631  * return:                              if success: return 0
1632  *                                      failed:  return -ENOMEM
1633  */
1634 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1635 {
1636         struct fusion_context *fusion;
1637         int i = 0;
1638
1639         fusion = instance->ctrl_context;
1640
1641         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1642
1643         for (i = 0; i < 2; i++) {
1644                 fusion->ld_map[i] = NULL;
1645
1646                 fusion->ld_drv_map[i] = (void *)
1647                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1648                                          fusion->drv_map_pages);
1649
1650                 if (!fusion->ld_drv_map[i]) {
1651                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1652
1653                         if (!fusion->ld_drv_map[i]) {
1654                                 dev_err(&instance->pdev->dev,
1655                                         "Could not allocate memory for local map"
1656                                         " size requested: %d\n",
1657                                         fusion->drv_map_sz);
1658                                 goto ld_drv_map_alloc_fail;
1659                         }
1660                 }
1661         }
1662
1663         for (i = 0; i < 2; i++) {
1664                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1665                                                        fusion->max_map_sz,
1666                                                        &fusion->ld_map_phys[i],
1667                                                        GFP_KERNEL);
1668                 if (!fusion->ld_map[i]) {
1669                         dev_err(&instance->pdev->dev,
1670                                 "Could not allocate memory for map info %s:%d\n",
1671                                 __func__, __LINE__);
1672                         goto ld_map_alloc_fail;
1673                 }
1674         }
1675
1676         return 0;
1677
1678 ld_map_alloc_fail:
1679         for (i = 0; i < 2; i++) {
1680                 if (fusion->ld_map[i])
1681                         dma_free_coherent(&instance->pdev->dev,
1682                                           fusion->max_map_sz,
1683                                           fusion->ld_map[i],
1684                                           fusion->ld_map_phys[i]);
1685         }
1686
1687 ld_drv_map_alloc_fail:
1688         for (i = 0; i < 2; i++) {
1689                 if (fusion->ld_drv_map[i]) {
1690                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1691                                 vfree(fusion->ld_drv_map[i]);
1692                         else
1693                                 free_pages((ulong)fusion->ld_drv_map[i],
1694                                            fusion->drv_map_pages);
1695                 }
1696         }
1697
1698         return -ENOMEM;
1699 }
1700
1701 /**
1702  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1703  *                                      reply desc queue,
1704  *                                      IO request frame queue, set can_queue.
1705  * @instance:                           Adapter soft state
1706  * @return:                             void
1707  */
1708 static inline
1709 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1710 {
1711         struct fusion_context *fusion;
1712         u16 max_cmd;
1713
1714         fusion = instance->ctrl_context;
1715         max_cmd = instance->max_fw_cmds;
1716
1717         if (instance->adapter_type >= VENTURA_SERIES)
1718                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1719         else
1720                 instance->max_mpt_cmds = instance->max_fw_cmds;
1721
1722         instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1723         instance->cur_can_queue = instance->max_scsi_cmds;
1724         instance->host->can_queue = instance->cur_can_queue;
1725
1726         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1727
1728         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1729                                           instance->max_mpt_cmds;
1730         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1731                                         (fusion->reply_q_depth);
1732         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1733                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1734                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1735 }
1736
1737 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1738 {
1739         struct fusion_context *fusion;
1740         struct megasas_cmd *cmd;
1741
1742         fusion = instance->ctrl_context;
1743
1744         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1745
1746         if (!cmd) {
1747                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1748                         __func__, __LINE__);
1749                 return -ENOMEM;
1750         }
1751
1752         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1753                                         IOC_INIT_FRAME_SIZE,
1754                                         &cmd->frame_phys_addr, GFP_KERNEL);
1755
1756         if (!cmd->frame) {
1757                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1758                         __func__, __LINE__);
1759                 kfree(cmd);
1760                 return -ENOMEM;
1761         }
1762
1763         fusion->ioc_init_cmd = cmd;
1764         return 0;
1765 }
1766
1767 /**
1768  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1769  * @instance:           Adapter soft state
1770  */
1771 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1772 {
1773         struct fusion_context *fusion;
1774
1775         fusion = instance->ctrl_context;
1776
1777         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1778                 dma_free_coherent(&instance->pdev->dev,
1779                                   IOC_INIT_FRAME_SIZE,
1780                                   fusion->ioc_init_cmd->frame,
1781                                   fusion->ioc_init_cmd->frame_phys_addr);
1782
1783         kfree(fusion->ioc_init_cmd);
1784 }
1785
1786 /**
1787  * megasas_init_adapter_fusion -        Initializes the FW
1788  * @instance:           Adapter soft state
1789  *
1790  * This is the main function for initializing firmware.
1791  */
1792 static u32
1793 megasas_init_adapter_fusion(struct megasas_instance *instance)
1794 {
1795         struct fusion_context *fusion;
1796         u32 scratch_pad_1;
1797         int i = 0, count;
1798         u32 status_reg;
1799
1800         fusion = instance->ctrl_context;
1801
1802         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1803
1804         /*
1805          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1806          */
1807         instance->max_mfi_cmds =
1808                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1809
1810         megasas_configure_queue_sizes(instance);
1811
1812         scratch_pad_1 = megasas_readl(instance,
1813                                       &instance->reg_set->outbound_scratch_pad_1);
1814         /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1815          * Firmware support extended IO chain frame which is 4 times more than
1816          * legacy Firmware.
1817          * Legacy Firmware - Frame size is (8 * 128) = 1K
1818          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1819          */
1820         if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1821                 instance->max_chain_frame_sz =
1822                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1823                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1824         else
1825                 instance->max_chain_frame_sz =
1826                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1827                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1828
1829         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1830                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1831                         instance->max_chain_frame_sz,
1832                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1833                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1834         }
1835
1836         fusion->max_sge_in_main_msg =
1837                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1838                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1839
1840         fusion->max_sge_in_chain =
1841                 instance->max_chain_frame_sz
1842                         / sizeof(union MPI2_SGE_IO_UNION);
1843
1844         instance->max_num_sge =
1845                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1846                         + fusion->max_sge_in_chain - 2);
1847
1848         /* Used for pass thru MFI frame (DCMD) */
1849         fusion->chain_offset_mfi_pthru =
1850                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1851
1852         fusion->chain_offset_io_request =
1853                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1854                  sizeof(union MPI2_SGE_IO_UNION))/16;
1855
1856         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1857         count += instance->iopoll_q_count;
1858
1859         for (i = 0 ; i < count; i++)
1860                 fusion->last_reply_idx[i] = 0;
1861
1862         /*
1863          * For fusion adapters, 3 commands for IOCTL and 8 commands
1864          * for driver's internal DCMDs.
1865          */
1866         instance->max_scsi_cmds = instance->max_fw_cmds -
1867                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1868                                 MEGASAS_FUSION_IOCTL_CMDS);
1869         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1870
1871         for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++)
1872                 atomic_set(&fusion->busy_mq_poll[i], 0);
1873
1874         if (megasas_alloc_ioc_init_frame(instance))
1875                 return 1;
1876
1877         /*
1878          * Allocate memory for descriptors
1879          * Create a pool of commands
1880          */
1881         if (megasas_alloc_cmds(instance))
1882                 goto fail_alloc_mfi_cmds;
1883         if (megasas_alloc_cmds_fusion(instance))
1884                 goto fail_alloc_cmds;
1885
1886         if (megasas_ioc_init_fusion(instance)) {
1887                 status_reg = instance->instancet->read_fw_status_reg(instance);
1888                 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) &&
1889                     (status_reg & MFI_RESET_ADAPTER)) {
1890                         /* Do a chip reset and then retry IOC INIT once */
1891                         if (megasas_adp_reset_wait_for_ready
1892                                 (instance, true, 0) == FAILED)
1893                                 goto fail_ioc_init;
1894
1895                         if (megasas_ioc_init_fusion(instance))
1896                                 goto fail_ioc_init;
1897                 } else {
1898                         goto fail_ioc_init;
1899                 }
1900         }
1901
1902         megasas_display_intel_branding(instance);
1903         if (megasas_get_ctrl_info(instance)) {
1904                 dev_err(&instance->pdev->dev,
1905                         "Could not get controller info. Fail from %s %d\n",
1906                         __func__, __LINE__);
1907                 goto fail_ioc_init;
1908         }
1909
1910         instance->flag_ieee = 1;
1911         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1912         instance->threshold_reply_count = instance->max_fw_cmds / 4;
1913         fusion->fast_path_io = 0;
1914
1915         if (megasas_allocate_raid_maps(instance))
1916                 goto fail_ioc_init;
1917
1918         if (!megasas_get_map_info(instance))
1919                 megasas_sync_map_info(instance);
1920
1921         return 0;
1922
1923 fail_ioc_init:
1924         megasas_free_cmds_fusion(instance);
1925 fail_alloc_cmds:
1926         megasas_free_cmds(instance);
1927 fail_alloc_mfi_cmds:
1928         megasas_free_ioc_init_cmd(instance);
1929         return 1;
1930 }
1931
1932 /**
1933  * megasas_fault_detect_work    -       Worker function of
1934  *                                      FW fault handling workqueue.
1935  * @work:       FW fault work struct
1936  */
1937 static void
1938 megasas_fault_detect_work(struct work_struct *work)
1939 {
1940         struct megasas_instance *instance =
1941                 container_of(work, struct megasas_instance,
1942                              fw_fault_work.work);
1943         u32 fw_state, dma_state, status;
1944
1945         /* Check the fw state */
1946         fw_state = instance->instancet->read_fw_status_reg(instance) &
1947                         MFI_STATE_MASK;
1948
1949         if (fw_state == MFI_STATE_FAULT) {
1950                 dma_state = instance->instancet->read_fw_status_reg(instance) &
1951                                 MFI_STATE_DMADONE;
1952                 /* Start collecting crash, if DMA bit is done */
1953                 if (instance->crash_dump_drv_support &&
1954                     instance->crash_dump_app_support && dma_state) {
1955                         megasas_fusion_crash_dump(instance);
1956                 } else {
1957                         if (instance->unload == 0) {
1958                                 status = megasas_reset_fusion(instance->host, 0);
1959                                 if (status != SUCCESS) {
1960                                         dev_err(&instance->pdev->dev,
1961                                                 "Failed from %s %d, do not re-arm timer\n",
1962                                                 __func__, __LINE__);
1963                                         return;
1964                                 }
1965                         }
1966                 }
1967         }
1968
1969         if (instance->fw_fault_work_q)
1970                 queue_delayed_work(instance->fw_fault_work_q,
1971                         &instance->fw_fault_work,
1972                         msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1973 }
1974
1975 int
1976 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1977 {
1978         /* Check if the Fault WQ is already started */
1979         if (instance->fw_fault_work_q)
1980                 return SUCCESS;
1981
1982         INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1983
1984         snprintf(instance->fault_handler_work_q_name,
1985                  sizeof(instance->fault_handler_work_q_name),
1986                  "poll_megasas%d_status", instance->host->host_no);
1987
1988         instance->fw_fault_work_q =
1989                 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1990         if (!instance->fw_fault_work_q) {
1991                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1992                         __func__, __LINE__);
1993                 return FAILED;
1994         }
1995
1996         queue_delayed_work(instance->fw_fault_work_q,
1997                            &instance->fw_fault_work,
1998                            msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1999
2000         return SUCCESS;
2001 }
2002
2003 void
2004 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
2005 {
2006         struct workqueue_struct *wq;
2007
2008         if (instance->fw_fault_work_q) {
2009                 wq = instance->fw_fault_work_q;
2010                 instance->fw_fault_work_q = NULL;
2011                 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
2012                         flush_workqueue(wq);
2013                 destroy_workqueue(wq);
2014         }
2015 }
2016
2017 /**
2018  * map_cmd_status -     Maps FW cmd status to OS cmd status
2019  * @fusion:             fusion context
2020  * @scmd:               Pointer to cmd
2021  * @status:             status of cmd returned by FW
2022  * @ext_status:         ext status of cmd returned by FW
2023  * @data_length:        command data length
2024  * @sense:              command sense data
2025  */
2026 static void
2027 map_cmd_status(struct fusion_context *fusion,
2028                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
2029                 u32 data_length, u8 *sense)
2030 {
2031         u8 cmd_type;
2032         int resid;
2033
2034         cmd_type = megasas_cmd_type(scmd);
2035         switch (status) {
2036
2037         case MFI_STAT_OK:
2038                 scmd->result = DID_OK << 16;
2039                 break;
2040
2041         case MFI_STAT_SCSI_IO_FAILED:
2042         case MFI_STAT_LD_INIT_IN_PROGRESS:
2043                 scmd->result = (DID_ERROR << 16) | ext_status;
2044                 break;
2045
2046         case MFI_STAT_SCSI_DONE_WITH_ERROR:
2047
2048                 scmd->result = (DID_OK << 16) | ext_status;
2049                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
2050                         memcpy(scmd->sense_buffer, sense,
2051                                SCSI_SENSE_BUFFERSIZE);
2052                 }
2053
2054                 /*
2055                  * If the  IO request is partially completed, then MR FW will
2056                  * update "io_request->DataLength" field with actual number of
2057                  * bytes transferred.Driver will set residual bytes count in
2058                  * SCSI command structure.
2059                  */
2060                 resid = (scsi_bufflen(scmd) - data_length);
2061                 scsi_set_resid(scmd, resid);
2062
2063                 if (resid &&
2064                         ((cmd_type == READ_WRITE_LDIO) ||
2065                         (cmd_type == READ_WRITE_SYSPDIO)))
2066                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
2067                                 " requested/completed 0x%x/0x%x\n",
2068                                 status, scsi_bufflen(scmd), data_length);
2069                 break;
2070
2071         case MFI_STAT_LD_OFFLINE:
2072         case MFI_STAT_DEVICE_NOT_FOUND:
2073                 scmd->result = DID_BAD_TARGET << 16;
2074                 break;
2075         case MFI_STAT_CONFIG_SEQ_MISMATCH:
2076                 scmd->result = DID_IMM_RETRY << 16;
2077                 break;
2078         default:
2079                 scmd->result = DID_ERROR << 16;
2080                 break;
2081         }
2082 }
2083
2084 /**
2085  * megasas_is_prp_possible -
2086  * Checks if native NVMe PRPs can be built for the IO
2087  *
2088  * @instance:           Adapter soft state
2089  * @scmd:               SCSI command from the mid-layer
2090  * @sge_count:          scatter gather element count.
2091  *
2092  * Returns:             true: PRPs can be built
2093  *                      false: IEEE SGLs needs to be built
2094  */
2095 static bool
2096 megasas_is_prp_possible(struct megasas_instance *instance,
2097                         struct scsi_cmnd *scmd, int sge_count)
2098 {
2099         u32 data_length = 0;
2100         struct scatterlist *sg_scmd;
2101         bool build_prp = false;
2102         u32 mr_nvme_pg_size;
2103
2104         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2105                                 MR_DEFAULT_NVME_PAGE_SIZE);
2106         data_length = scsi_bufflen(scmd);
2107         sg_scmd = scsi_sglist(scmd);
2108
2109         /*
2110          * NVMe uses one PRP for each page (or part of a page)
2111          * look at the data length - if 4 pages or less then IEEE is OK
2112          * if  > 5 pages then we need to build a native SGL
2113          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
2114          * if this first size in the page is >= the residual beyond 4 pages
2115          * then use IEEE, otherwise use native SGL
2116          */
2117
2118         if (data_length > (mr_nvme_pg_size * 5)) {
2119                 build_prp = true;
2120         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
2121                         (data_length <= (mr_nvme_pg_size * 5)))  {
2122                 /* check if 1st SG entry size is < residual beyond 4 pages */
2123                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
2124                         build_prp = true;
2125         }
2126
2127         return build_prp;
2128 }
2129
2130 /**
2131  * megasas_make_prp_nvme -
2132  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2133  *
2134  * @instance:           Adapter soft state
2135  * @scmd:               SCSI command from the mid-layer
2136  * @sgl_ptr:            SGL to be filled in
2137  * @cmd:                Fusion command frame
2138  * @sge_count:          scatter gather element count.
2139  *
2140  * Returns:             true: PRPs are built
2141  *                      false: IEEE SGLs needs to be built
2142  */
2143 static bool
2144 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2145                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2146                       struct megasas_cmd_fusion *cmd, int sge_count)
2147 {
2148         int sge_len, offset, num_prp_in_chain = 0;
2149         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2150         u64 *ptr_sgl;
2151         dma_addr_t ptr_sgl_phys;
2152         u64 sge_addr;
2153         u32 page_mask, page_mask_result;
2154         struct scatterlist *sg_scmd;
2155         u32 first_prp_len;
2156         bool build_prp = false;
2157         int data_len = scsi_bufflen(scmd);
2158         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2159                                         MR_DEFAULT_NVME_PAGE_SIZE);
2160
2161         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2162
2163         if (!build_prp)
2164                 return false;
2165
2166         /*
2167          * Nvme has a very convoluted prp format.  One prp is required
2168          * for each page or partial page. Driver need to split up OS sg_list
2169          * entries if it is longer than one page or cross a page
2170          * boundary.  Driver also have to insert a PRP list pointer entry as
2171          * the last entry in each physical page of the PRP list.
2172          *
2173          * NOTE: The first PRP "entry" is actually placed in the first
2174          * SGL entry in the main message as IEEE 64 format.  The 2nd
2175          * entry in the main message is the chain element, and the rest
2176          * of the PRP entries are built in the contiguous pcie buffer.
2177          */
2178         page_mask = mr_nvme_pg_size - 1;
2179         ptr_sgl = (u64 *)cmd->sg_frame;
2180         ptr_sgl_phys = cmd->sg_frame_phys_addr;
2181         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2182
2183         /* Build chain frame element which holds all prps except first*/
2184         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2185             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2186
2187         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2188         main_chain_element->NextChainOffset = 0;
2189         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2190                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
2191                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2192
2193         /* Build first prp, sge need not to be page aligned*/
2194         ptr_first_sgl = sgl_ptr;
2195         sg_scmd = scsi_sglist(scmd);
2196         sge_addr = sg_dma_address(sg_scmd);
2197         sge_len = sg_dma_len(sg_scmd);
2198
2199         offset = (u32)(sge_addr & page_mask);
2200         first_prp_len = mr_nvme_pg_size - offset;
2201
2202         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2203         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2204
2205         data_len -= first_prp_len;
2206
2207         if (sge_len > first_prp_len) {
2208                 sge_addr += first_prp_len;
2209                 sge_len -= first_prp_len;
2210         } else if (sge_len == first_prp_len) {
2211                 sg_scmd = sg_next(sg_scmd);
2212                 sge_addr = sg_dma_address(sg_scmd);
2213                 sge_len = sg_dma_len(sg_scmd);
2214         }
2215
2216         for (;;) {
2217                 offset = (u32)(sge_addr & page_mask);
2218
2219                 /* Put PRP pointer due to page boundary*/
2220                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2221                 if (unlikely(!page_mask_result)) {
2222                         scmd_printk(KERN_NOTICE,
2223                                     scmd, "page boundary ptr_sgl: 0x%p\n",
2224                                     ptr_sgl);
2225                         ptr_sgl_phys += 8;
2226                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2227                         ptr_sgl++;
2228                         num_prp_in_chain++;
2229                 }
2230
2231                 *ptr_sgl = cpu_to_le64(sge_addr);
2232                 ptr_sgl++;
2233                 ptr_sgl_phys += 8;
2234                 num_prp_in_chain++;
2235
2236                 sge_addr += mr_nvme_pg_size;
2237                 sge_len -= mr_nvme_pg_size;
2238                 data_len -= mr_nvme_pg_size;
2239
2240                 if (data_len <= 0)
2241                         break;
2242
2243                 if (sge_len > 0)
2244                         continue;
2245
2246                 sg_scmd = sg_next(sg_scmd);
2247                 sge_addr = sg_dma_address(sg_scmd);
2248                 sge_len = sg_dma_len(sg_scmd);
2249         }
2250
2251         main_chain_element->Length =
2252                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
2253
2254         return build_prp;
2255 }
2256
2257 /**
2258  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
2259  * @instance:           Adapter soft state
2260  * @scp:                SCSI command from the mid-layer
2261  * @sgl_ptr:            SGL to be filled in
2262  * @cmd:                cmd we are working on
2263  * @sge_count:          sge count
2264  *
2265  */
2266 static void
2267 megasas_make_sgl_fusion(struct megasas_instance *instance,
2268                         struct scsi_cmnd *scp,
2269                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2270                         struct megasas_cmd_fusion *cmd, int sge_count)
2271 {
2272         int i, sg_processed;
2273         struct scatterlist *os_sgl;
2274         struct fusion_context *fusion;
2275
2276         fusion = instance->ctrl_context;
2277
2278         if (instance->adapter_type >= INVADER_SERIES) {
2279                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2280                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2281                 sgl_ptr_end->Flags = 0;
2282         }
2283
2284         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2285                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2286                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2287                 sgl_ptr->Flags = 0;
2288                 if (instance->adapter_type >= INVADER_SERIES)
2289                         if (i == sge_count - 1)
2290                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2291                 sgl_ptr++;
2292                 sg_processed = i + 1;
2293
2294                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
2295                     (sge_count > fusion->max_sge_in_main_msg)) {
2296
2297                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2298                         if (instance->adapter_type >= INVADER_SERIES) {
2299                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2300                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2301                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2302                                         cmd->io_request->ChainOffset =
2303                                                 fusion->
2304                                                 chain_offset_io_request;
2305                                 else
2306                                         cmd->io_request->ChainOffset = 0;
2307                         } else
2308                                 cmd->io_request->ChainOffset =
2309                                         fusion->chain_offset_io_request;
2310
2311                         sg_chain = sgl_ptr;
2312                         /* Prepare chain element */
2313                         sg_chain->NextChainOffset = 0;
2314                         if (instance->adapter_type >= INVADER_SERIES)
2315                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2316                         else
2317                                 sg_chain->Flags =
2318                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2319                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2320                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2321                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2322
2323                         sgl_ptr =
2324                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2325                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2326                 }
2327         }
2328 }
2329
2330 /**
2331  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
2332  * @scp:                SCSI command pointer
2333  * @instance:           Soft instance of controller
2334  * @cmd:                Fusion command pointer
2335  *
2336  * This function will build sgls based on device type.
2337  * For nvme drives, there is different way of building sgls in nvme native
2338  * format- PRPs(Physical Region Page).
2339  *
2340  * Returns the number of sg lists actually used, zero if the sg lists
2341  * is NULL, or -ENOMEM if the mapping failed
2342  */
2343 static
2344 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2345                      struct megasas_cmd_fusion *cmd)
2346 {
2347         int sge_count;
2348         bool build_prp = false;
2349         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2350
2351         sge_count = scsi_dma_map(scp);
2352
2353         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2354                 return sge_count;
2355
2356         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2357         if ((le16_to_cpu(cmd->io_request->IoFlags) &
2358             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2359             (cmd->pd_interface == NVME_PD))
2360                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2361                                                   cmd, sge_count);
2362
2363         if (!build_prp)
2364                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2365                                         cmd, sge_count);
2366
2367         return sge_count;
2368 }
2369
2370 /**
2371  * megasas_set_pd_lba - Sets PD LBA
2372  * @io_request:         IO request
2373  * @cdb_len:            cdb length
2374  * @io_info:            IO information
2375  * @scp:                SCSI command
2376  * @local_map_ptr:      Raid map
2377  * @ref_tag:            Primary reference tag
2378  *
2379  * Used to set the PD LBA in CDB for FP IOs
2380  */
2381 static void
2382 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2383                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2384                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2385 {
2386         struct MR_LD_RAID *raid;
2387         u16 ld;
2388         u64 start_blk = io_info->pdBlock;
2389         u8 *cdb = io_request->CDB.CDB32;
2390         u32 num_blocks = io_info->numBlocks;
2391         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2392
2393         /* Check if T10 PI (DIF) is enabled for this LD */
2394         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2395         raid = MR_LdRaidGet(ld, local_map_ptr);
2396         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2397                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2398                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2399                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2400
2401                 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2402                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2403                 else
2404                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2405                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2406
2407                 /* LBA */
2408                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2409                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2410                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2411                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2412                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2413                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2414                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2415                 cdb[19] = (u8)(start_blk & 0xff);
2416
2417                 /* Logical block reference tag */
2418                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2419                         cpu_to_be32(ref_tag);
2420                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2421                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2422
2423                 /* Transfer length */
2424                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2425                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2426                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2427                 cdb[31] = (u8)(num_blocks & 0xff);
2428
2429                 /* set SCSI IO EEDPFlags */
2430                 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2431                         io_request->EEDPFlags = cpu_to_le16(
2432                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2433                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2434                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2435                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2436                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2437                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2438                 } else {
2439                         io_request->EEDPFlags = cpu_to_le16(
2440                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2441                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2442                 }
2443                 io_request->Control |= cpu_to_le32((0x4 << 26));
2444                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2445         } else {
2446                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2447                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2448                     (start_blk <= 0xffffffff)) {
2449                         if (cdb_len == 16) {
2450                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2451                                 flagvals = cdb[1];
2452                                 groupnum = cdb[14];
2453                                 control = cdb[15];
2454                         } else {
2455                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2456                                 flagvals = cdb[1];
2457                                 groupnum = cdb[10];
2458                                 control = cdb[11];
2459                         }
2460
2461                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2462
2463                         cdb[0] = opcode;
2464                         cdb[1] = flagvals;
2465                         cdb[6] = groupnum;
2466                         cdb[9] = control;
2467
2468                         /* Transfer length */
2469                         cdb[8] = (u8)(num_blocks & 0xff);
2470                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2471
2472                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2473                         cdb_len = 10;
2474                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2475                         /* Convert to 16 byte CDB for large LBA's */
2476                         switch (cdb_len) {
2477                         case 6:
2478                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2479                                 control = cdb[5];
2480                                 break;
2481                         case 10:
2482                                 opcode =
2483                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2484                                 flagvals = cdb[1];
2485                                 groupnum = cdb[6];
2486                                 control = cdb[9];
2487                                 break;
2488                         case 12:
2489                                 opcode =
2490                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2491                                 flagvals = cdb[1];
2492                                 groupnum = cdb[10];
2493                                 control = cdb[11];
2494                                 break;
2495                         }
2496
2497                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2498
2499                         cdb[0] = opcode;
2500                         cdb[1] = flagvals;
2501                         cdb[14] = groupnum;
2502                         cdb[15] = control;
2503
2504                         /* Transfer length */
2505                         cdb[13] = (u8)(num_blocks & 0xff);
2506                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2507                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2508                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2509
2510                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2511                         cdb_len = 16;
2512                 }
2513
2514                 /* Normal case, just load LBA here */
2515                 switch (cdb_len) {
2516                 case 6:
2517                 {
2518                         u8 val = cdb[1] & 0xE0;
2519                         cdb[3] = (u8)(start_blk & 0xff);
2520                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2521                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2522                         break;
2523                 }
2524                 case 10:
2525                         cdb[5] = (u8)(start_blk & 0xff);
2526                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2527                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2528                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2529                         break;
2530                 case 12:
2531                         cdb[5]    = (u8)(start_blk & 0xff);
2532                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2533                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2534                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2535                         break;
2536                 case 16:
2537                         cdb[9]    = (u8)(start_blk & 0xff);
2538                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2539                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2540                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2541                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2542                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2543                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2544                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2545                         break;
2546                 }
2547         }
2548 }
2549
2550 /**
2551  * megasas_stream_detect -      stream detection on read and and write IOs
2552  * @instance:           Adapter soft state
2553  * @cmd:                    Command to be prepared
2554  * @io_info:            IO Request info
2555  *
2556  */
2557
2558 /** stream detection on read and and write IOs */
2559 static void megasas_stream_detect(struct megasas_instance *instance,
2560                                   struct megasas_cmd_fusion *cmd,
2561                                   struct IO_REQUEST_INFO *io_info)
2562 {
2563         struct fusion_context *fusion = instance->ctrl_context;
2564         u32 device_id = io_info->ldTgtId;
2565         struct LD_STREAM_DETECT *current_ld_sd
2566                 = fusion->stream_detect_by_ld[device_id];
2567         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2568         u32 shifted_values, unshifted_values;
2569         u32 index_value_mask, shifted_values_mask;
2570         int i;
2571         bool is_read_ahead = false;
2572         struct STREAM_DETECT *current_sd;
2573         /* find possible stream */
2574         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2575                 stream_num = (*track_stream >>
2576                         (i * BITS_PER_INDEX_STREAM)) &
2577                         STREAM_MASK;
2578                 current_sd = &current_ld_sd->stream_track[stream_num];
2579                 /* if we found a stream, update the raid
2580                  *  context and also update the mruBitMap
2581                  */
2582                 /*      boundary condition */
2583                 if ((current_sd->next_seq_lba) &&
2584                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2585                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2586                     (current_sd->is_read == io_info->isRead)) {
2587
2588                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2589                             ((!io_info->isRead) || (!is_read_ahead)))
2590                                 /*
2591                                  * Once the API is available we need to change this.
2592                                  * At this point we are not allowing any gap
2593                                  */
2594                                 continue;
2595
2596                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2597                         current_sd->next_seq_lba =
2598                         io_info->ldStartBlock + io_info->numBlocks;
2599                         /*
2600                          *      update the mruBitMap LRU
2601                          */
2602                         shifted_values_mask =
2603                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2604                         shifted_values = ((*track_stream & shifted_values_mask)
2605                                                 << BITS_PER_INDEX_STREAM);
2606                         index_value_mask =
2607                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2608                         unshifted_values =
2609                                 *track_stream & ~(shifted_values_mask |
2610                                 index_value_mask);
2611                         *track_stream =
2612                                 unshifted_values | shifted_values | stream_num;
2613                         return;
2614                 }
2615         }
2616         /*
2617          * if we did not find any stream, create a new one
2618          * from the least recently used
2619          */
2620         stream_num = (*track_stream >>
2621                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2622                 STREAM_MASK;
2623         current_sd = &current_ld_sd->stream_track[stream_num];
2624         current_sd->is_read = io_info->isRead;
2625         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2626         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2627         return;
2628 }
2629
2630 /**
2631  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2632  * affinity (cpu of the controller) and raid_flags in the raid context
2633  * based on IO type.
2634  *
2635  * @fusion:             Fusion context
2636  * @praid_context:      IO RAID context
2637  * @raid:               LD raid map
2638  * @fp_possible:        Is fast path possible?
2639  * @is_read:            Is read IO?
2640  * @scsi_buff_len:      SCSI command buffer length
2641  *
2642  */
2643 static void
2644 megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion,
2645                                 union RAID_CONTEXT_UNION *praid_context,
2646                                 struct MR_LD_RAID *raid, bool fp_possible,
2647                                 u8 is_read, u32 scsi_buff_len)
2648 {
2649         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2650         struct RAID_CONTEXT_G35 *rctx_g35;
2651
2652         rctx_g35 = &praid_context->raid_context_g35;
2653         if (fp_possible) {
2654                 if (is_read) {
2655                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2656                             (raid->cpuAffinity.pdRead.cpu1))
2657                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2658                         else if (raid->cpuAffinity.pdRead.cpu1)
2659                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2660                 } else {
2661                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2662                             (raid->cpuAffinity.pdWrite.cpu1))
2663                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2664                         else if (raid->cpuAffinity.pdWrite.cpu1)
2665                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2666                         /* Fast path cache by pass capable R0/R1 VD */
2667                         if ((raid->level <= 1) &&
2668                             (raid->capability.fp_cache_bypass_capable)) {
2669                                 rctx_g35->routing_flags |=
2670                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2671                                 rctx_g35->raid_flags =
2672                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2673                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2674                         }
2675                 }
2676         } else {
2677                 if (is_read) {
2678                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2679                             (raid->cpuAffinity.ldRead.cpu1))
2680                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2681                         else if (raid->cpuAffinity.ldRead.cpu1)
2682                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2683                 } else {
2684                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2685                             (raid->cpuAffinity.ldWrite.cpu1))
2686                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2687                         else if (raid->cpuAffinity.ldWrite.cpu1)
2688                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2689
2690                         if (is_stream_detected(rctx_g35) &&
2691                             ((raid->level == 5) || (raid->level == 6)) &&
2692                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2693                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2694                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2695                 }
2696         }
2697
2698         rctx_g35->routing_flags |=
2699                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2700
2701         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2702          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2703          * IO Subtype is not bitmap.
2704          */
2705         if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) &&
2706                         (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) {
2707                 praid_context->raid_context_g35.raid_flags =
2708                         (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2709                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2710         }
2711 }
2712
2713 /**
2714  * megasas_build_ldio_fusion -  Prepares IOs to devices
2715  * @instance:           Adapter soft state
2716  * @scp:                SCSI command
2717  * @cmd:                Command to be prepared
2718  *
2719  * Prepares the io_request and chain elements (sg_frame) for IO
2720  * The IO can be for PD (Fast Path) or LD
2721  */
2722 static void
2723 megasas_build_ldio_fusion(struct megasas_instance *instance,
2724                           struct scsi_cmnd *scp,
2725                           struct megasas_cmd_fusion *cmd)
2726 {
2727         bool fp_possible;
2728         u16 ld;
2729         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2730         u32 scsi_buff_len;
2731         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2732         struct IO_REQUEST_INFO io_info;
2733         struct fusion_context *fusion;
2734         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2735         u8 *raidLUN;
2736         unsigned long spinlock_flags;
2737         struct MR_LD_RAID *raid = NULL;
2738         struct MR_PRIV_DEVICE *mrdev_priv;
2739         struct RAID_CONTEXT *rctx;
2740         struct RAID_CONTEXT_G35 *rctx_g35;
2741
2742         device_id = MEGASAS_DEV_INDEX(scp);
2743
2744         fusion = instance->ctrl_context;
2745
2746         io_request = cmd->io_request;
2747         rctx = &io_request->RaidContext.raid_context;
2748         rctx_g35 = &io_request->RaidContext.raid_context_g35;
2749
2750         rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2751         rctx->status = 0;
2752         rctx->ex_status = 0;
2753
2754         start_lba_lo = 0;
2755         start_lba_hi = 0;
2756         fp_possible = false;
2757
2758         /*
2759          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2760          */
2761         if (scp->cmd_len == 6) {
2762                 datalength = (u32) scp->cmnd[4];
2763                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2764                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2765
2766                 start_lba_lo &= 0x1FFFFF;
2767         }
2768
2769         /*
2770          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2771          */
2772         else if (scp->cmd_len == 10) {
2773                 datalength = (u32) scp->cmnd[8] |
2774                         ((u32) scp->cmnd[7] << 8);
2775                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2776                         ((u32) scp->cmnd[3] << 16) |
2777                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2778         }
2779
2780         /*
2781          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2782          */
2783         else if (scp->cmd_len == 12) {
2784                 datalength = ((u32) scp->cmnd[6] << 24) |
2785                         ((u32) scp->cmnd[7] << 16) |
2786                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2787                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2788                         ((u32) scp->cmnd[3] << 16) |
2789                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2790         }
2791
2792         /*
2793          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2794          */
2795         else if (scp->cmd_len == 16) {
2796                 datalength = ((u32) scp->cmnd[10] << 24) |
2797                         ((u32) scp->cmnd[11] << 16) |
2798                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2799                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2800                         ((u32) scp->cmnd[7] << 16) |
2801                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2802
2803                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2804                         ((u32) scp->cmnd[3] << 16) |
2805                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2806         }
2807
2808         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2809         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2810         io_info.numBlocks = datalength;
2811         io_info.ldTgtId = device_id;
2812         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2813         scsi_buff_len = scsi_bufflen(scp);
2814         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2815         io_info.data_arms = 1;
2816
2817         if (scp->sc_data_direction == DMA_FROM_DEVICE)
2818                 io_info.isRead = 1;
2819
2820         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2821         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2822
2823         if (ld < instance->fw_supported_vd_count)
2824                 raid = MR_LdRaidGet(ld, local_map_ptr);
2825
2826         if (!raid || (!fusion->fast_path_io)) {
2827                 rctx->reg_lock_flags  = 0;
2828                 fp_possible = false;
2829         } else {
2830                 if (MR_BuildRaidContext(instance, &io_info, rctx,
2831                                         local_map_ptr, &raidLUN))
2832                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2833         }
2834
2835         megasas_get_msix_index(instance, scp, cmd, io_info.data_arms);
2836
2837         if (instance->adapter_type >= VENTURA_SERIES) {
2838                 /* FP for Optimal raid level 1.
2839                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2840                  * are built by the driver as LD I/Os.
2841                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2842                  * (there is never a reason to process these as buffered writes)
2843                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2844                  * with the SLD bit asserted.
2845                  */
2846                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2847                         mrdev_priv = scp->device->hostdata;
2848
2849                         if (atomic_inc_return(&instance->fw_outstanding) >
2850                                 (instance->host->can_queue)) {
2851                                 fp_possible = false;
2852                                 atomic_dec(&instance->fw_outstanding);
2853                         } else if (fusion->pcie_bw_limitation &&
2854                                 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2855                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) {
2856                                 fp_possible = false;
2857                                 atomic_dec(&instance->fw_outstanding);
2858                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2859                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2860                                                    instance->r1_ldio_hint_default);
2861                         }
2862                 }
2863
2864                 if (!fp_possible ||
2865                     (io_info.isRead && io_info.ra_capable)) {
2866                         spin_lock_irqsave(&instance->stream_lock,
2867                                           spinlock_flags);
2868                         megasas_stream_detect(instance, cmd, &io_info);
2869                         spin_unlock_irqrestore(&instance->stream_lock,
2870                                                spinlock_flags);
2871                         /* In ventura if stream detected for a read and it is
2872                          * read ahead capable make this IO as LDIO
2873                          */
2874                         if (is_stream_detected(rctx_g35))
2875                                 fp_possible = false;
2876                 }
2877
2878                 /* If raid is NULL, set CPU affinity to default CPU0 */
2879                 if (raid)
2880                         megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext,
2881                                 raid, fp_possible, io_info.isRead,
2882                                 scsi_buff_len);
2883                 else
2884                         rctx_g35->routing_flags |=
2885                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2886         }
2887
2888         if (fp_possible) {
2889                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2890                                    local_map_ptr, start_lba_lo);
2891                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2892                 cmd->request_desc->SCSIIO.RequestFlags =
2893                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2894                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2895                 if (instance->adapter_type == INVADER_SERIES) {
2896                         rctx->type = MPI2_TYPE_CUDA;
2897                         rctx->nseg = 0x1;
2898                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2899                         rctx->reg_lock_flags |=
2900                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2901                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2902                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2903                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2904                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2905                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2906                         io_request->IoFlags |=
2907                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2908                 }
2909                 if (fusion->load_balance_info &&
2910                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2911                         (io_info.isRead)) {
2912                         io_info.devHandle =
2913                                 get_updated_dev_handle(instance,
2914                                         &fusion->load_balance_info[device_id],
2915                                         &io_info, local_map_ptr);
2916                         megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG;
2917                         cmd->pd_r1_lb = io_info.pd_after_lb;
2918                         if (instance->adapter_type >= VENTURA_SERIES)
2919                                 rctx_g35->span_arm = io_info.span_arm;
2920                         else
2921                                 rctx->span_arm = io_info.span_arm;
2922
2923                 } else
2924                         megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2925
2926                 if (instance->adapter_type >= VENTURA_SERIES)
2927                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2928                 else
2929                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2930
2931                 if ((raidLUN[0] == 1) &&
2932                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2933                         instance->dev_handle = !(instance->dev_handle);
2934                         io_info.devHandle =
2935                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2936                 }
2937
2938                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2939                 io_request->DevHandle = io_info.devHandle;
2940                 cmd->pd_interface = io_info.pd_interface;
2941                 /* populate the LUN field */
2942                 memcpy(io_request->LUN, raidLUN, 8);
2943         } else {
2944                 rctx->timeout_value =
2945                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2946                 cmd->request_desc->SCSIIO.RequestFlags =
2947                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2948                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2949                 if (instance->adapter_type == INVADER_SERIES) {
2950                         if (io_info.do_fp_rlbypass ||
2951                         (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2952                                 cmd->request_desc->SCSIIO.RequestFlags =
2953                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2954                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2955                         rctx->type = MPI2_TYPE_CUDA;
2956                         rctx->reg_lock_flags |=
2957                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2958                                         MR_RL_FLAGS_SEQ_NUM_ENABLE);
2959                         rctx->nseg = 0x1;
2960                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2961                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2962                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2963                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2964                 }
2965                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2966                 io_request->DevHandle = cpu_to_le16(device_id);
2967
2968         } /* Not FP */
2969 }
2970
2971 /**
2972  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2973  * @instance:           Adapter soft state
2974  * @scmd:               SCSI command
2975  * @cmd:                Command to be prepared
2976  *
2977  * Prepares the io_request frame for non-rw io cmds for vd.
2978  */
2979 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2980                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2981 {
2982         u32 device_id;
2983         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2984         u16 ld;
2985         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2986         struct fusion_context *fusion = instance->ctrl_context;
2987         u8                          span, physArm;
2988         __le16                      devHandle;
2989         u32                         arRef, pd;
2990         struct MR_LD_RAID                  *raid;
2991         struct RAID_CONTEXT                *pRAID_Context;
2992         u8 fp_possible = 1;
2993
2994         io_request = cmd->io_request;
2995         device_id = MEGASAS_DEV_INDEX(scmd);
2996         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2997         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2998         /* get RAID_Context pointer */
2999         pRAID_Context = &io_request->RaidContext.raid_context;
3000         /* Check with FW team */
3001         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3002         pRAID_Context->reg_lock_row_lba    = 0;
3003         pRAID_Context->reg_lock_length    = 0;
3004
3005         if (fusion->fast_path_io && (
3006                 device_id < instance->fw_supported_vd_count)) {
3007
3008                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
3009                 if (ld >= instance->fw_supported_vd_count - 1)
3010                         fp_possible = 0;
3011                 else {
3012                         raid = MR_LdRaidGet(ld, local_map_ptr);
3013                         if (!(raid->capability.fpNonRWCapable))
3014                                 fp_possible = 0;
3015                 }
3016         } else
3017                 fp_possible = 0;
3018
3019         if (!fp_possible) {
3020                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3021                 io_request->DevHandle = cpu_to_le16(device_id);
3022                 io_request->LUN[1] = scmd->device->lun;
3023                 pRAID_Context->timeout_value =
3024                         cpu_to_le16(scsi_cmd_to_rq(scmd)->timeout / HZ);
3025                 cmd->request_desc->SCSIIO.RequestFlags =
3026                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3027                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3028         } else {
3029
3030                 /* set RAID context values */
3031                 pRAID_Context->config_seq_num = raid->seqNum;
3032                 if (instance->adapter_type < VENTURA_SERIES)
3033                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
3034                 pRAID_Context->timeout_value =
3035                         cpu_to_le16(raid->fpIoTimeoutForLd);
3036
3037                 /* get the DevHandle for the PD (since this is
3038                    fpNonRWCapable, this is a single disk RAID0) */
3039                 span = physArm = 0;
3040                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
3041                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
3042                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
3043
3044                 /* build request descriptor */
3045                 cmd->request_desc->SCSIIO.RequestFlags =
3046                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3047                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3048                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
3049
3050                 /* populate the LUN field */
3051                 memcpy(io_request->LUN, raid->LUN, 8);
3052
3053                 /* build the raidScsiIO structure */
3054                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3055                 io_request->DevHandle = devHandle;
3056         }
3057 }
3058
3059 /**
3060  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
3061  * @instance:           Adapter soft state
3062  * @scmd:               SCSI command
3063  * @cmd:                Command to be prepared
3064  * @fp_possible:        parameter to detect fast path or firmware path io.
3065  *
3066  * Prepares the io_request frame for rw/non-rw io cmds for syspds
3067  */
3068 static void
3069 megasas_build_syspd_fusion(struct megasas_instance *instance,
3070         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
3071         bool fp_possible)
3072 {
3073         u32 device_id;
3074         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3075         u16 pd_index = 0;
3076         u16 os_timeout_value;
3077         u16 timeout_limit;
3078         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3079         struct RAID_CONTEXT     *pRAID_Context;
3080         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3081         struct MR_PRIV_DEVICE *mr_device_priv_data;
3082         struct fusion_context *fusion = instance->ctrl_context;
3083         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
3084
3085         device_id = MEGASAS_DEV_INDEX(scmd);
3086         pd_index = MEGASAS_PD_INDEX(scmd);
3087         os_timeout_value = scsi_cmd_to_rq(scmd)->timeout / HZ;
3088         mr_device_priv_data = scmd->device->hostdata;
3089         cmd->pd_interface = mr_device_priv_data->interface_type;
3090
3091         io_request = cmd->io_request;
3092         /* get RAID_Context pointer */
3093         pRAID_Context = &io_request->RaidContext.raid_context;
3094         pRAID_Context->reg_lock_flags = 0;
3095         pRAID_Context->reg_lock_row_lba = 0;
3096         pRAID_Context->reg_lock_length = 0;
3097         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3098         io_request->LUN[1] = scmd->device->lun;
3099         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
3100                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
3101
3102         /* If FW supports PD sequence number */
3103         if (instance->support_seqnum_jbod_fp) {
3104                 if (instance->use_seqnum_jbod_fp &&
3105                         instance->pd_list[pd_index].driveType == TYPE_DISK) {
3106
3107                         /* More than 256 PD/JBOD support for Ventura */
3108                         if (instance->support_morethan256jbod)
3109                                 pRAID_Context->virtual_disk_tgt_id =
3110                                         pd_sync->seq[pd_index].pd_target_id;
3111                         else
3112                                 pRAID_Context->virtual_disk_tgt_id =
3113                                         cpu_to_le16(device_id +
3114                                         (MAX_PHYSICAL_DEVICES - 1));
3115                         pRAID_Context->config_seq_num =
3116                                 pd_sync->seq[pd_index].seqNum;
3117                         io_request->DevHandle =
3118                                 pd_sync->seq[pd_index].devHandle;
3119                         if (instance->adapter_type >= VENTURA_SERIES) {
3120                                 io_request->RaidContext.raid_context_g35.routing_flags |=
3121                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3122                                 io_request->RaidContext.raid_context_g35.nseg_type |=
3123                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
3124                                 io_request->RaidContext.raid_context_g35.nseg_type |=
3125                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3126                         } else {
3127                                 pRAID_Context->type = MPI2_TYPE_CUDA;
3128                                 pRAID_Context->nseg = 0x1;
3129                                 pRAID_Context->reg_lock_flags |=
3130                                         (MR_RL_FLAGS_SEQ_NUM_ENABLE |
3131                                          MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3132                         }
3133                 } else {
3134                         pRAID_Context->virtual_disk_tgt_id =
3135                                 cpu_to_le16(device_id +
3136                                 (MAX_PHYSICAL_DEVICES - 1));
3137                         pRAID_Context->config_seq_num = 0;
3138                         io_request->DevHandle = cpu_to_le16(0xFFFF);
3139                 }
3140         } else {
3141                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3142                 pRAID_Context->config_seq_num = 0;
3143
3144                 if (fusion->fast_path_io) {
3145                         local_map_ptr =
3146                                 fusion->ld_drv_map[(instance->map_id & 1)];
3147                         io_request->DevHandle =
3148                                 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3149                 } else {
3150                         io_request->DevHandle = cpu_to_le16(0xFFFF);
3151                 }
3152         }
3153
3154         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3155
3156         megasas_get_msix_index(instance, scmd, cmd, 1);
3157
3158         if (!fp_possible) {
3159                 /* system pd firmware path */
3160                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3161                 cmd->request_desc->SCSIIO.RequestFlags =
3162                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3163                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3164                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3165                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3166         } else {
3167                 if (os_timeout_value)
3168                         os_timeout_value++;
3169
3170                 /* system pd Fast Path */
3171                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3172                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3173                                 255 : 0xFFFF;
3174                 pRAID_Context->timeout_value =
3175                         cpu_to_le16((os_timeout_value > timeout_limit) ?
3176                         timeout_limit : os_timeout_value);
3177                 if (instance->adapter_type >= INVADER_SERIES)
3178                         io_request->IoFlags |=
3179                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3180
3181                 cmd->request_desc->SCSIIO.RequestFlags =
3182                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3183                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3184         }
3185 }
3186
3187 /**
3188  * megasas_build_io_fusion -    Prepares IOs to devices
3189  * @instance:           Adapter soft state
3190  * @scp:                SCSI command
3191  * @cmd:                Command to be prepared
3192  *
3193  * Invokes helper functions to prepare request frames
3194  * and sets flags appropriate for IO/Non-IO cmd
3195  */
3196 static int
3197 megasas_build_io_fusion(struct megasas_instance *instance,
3198                         struct scsi_cmnd *scp,
3199                         struct megasas_cmd_fusion *cmd)
3200 {
3201         int sge_count;
3202         u16 pd_index = 0;
3203         u8 drive_type = 0;
3204         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3205         struct MR_PRIV_DEVICE *mr_device_priv_data;
3206         mr_device_priv_data = scp->device->hostdata;
3207
3208         /* Zero out some fields so they don't get reused */
3209         memset(io_request->LUN, 0x0, 8);
3210         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3211         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3212         io_request->EEDPFlags = 0;
3213         io_request->Control = 0;
3214         io_request->EEDPBlockSize = 0;
3215         io_request->ChainOffset = 0;
3216         io_request->RaidContext.raid_context.raid_flags = 0;
3217         io_request->RaidContext.raid_context.type = 0;
3218         io_request->RaidContext.raid_context.nseg = 0;
3219
3220         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3221         /*
3222          * Just the CDB length,rest of the Flags are zero
3223          * This will be modified for FP in build_ldio_fusion
3224          */
3225         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3226
3227         switch (megasas_cmd_type(scp)) {
3228         case READ_WRITE_LDIO:
3229                 megasas_build_ldio_fusion(instance, scp, cmd);
3230                 break;
3231         case NON_READ_WRITE_LDIO:
3232                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3233                 break;
3234         case READ_WRITE_SYSPDIO:
3235                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3236                 break;
3237         case NON_READ_WRITE_SYSPDIO:
3238                 pd_index = MEGASAS_PD_INDEX(scp);
3239                 drive_type = instance->pd_list[pd_index].driveType;
3240                 if ((instance->secure_jbod_support ||
3241                      mr_device_priv_data->is_tm_capable) ||
3242                      (instance->adapter_type >= VENTURA_SERIES &&
3243                      drive_type == TYPE_ENCLOSURE))
3244                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3245                 else
3246                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3247                 break;
3248         default:
3249                 break;
3250         }
3251
3252         /*
3253          * Construct SGL
3254          */
3255
3256         sge_count = megasas_make_sgl(instance, scp, cmd);
3257
3258         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3259                 dev_err(&instance->pdev->dev,
3260                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3261                         __func__, __LINE__, sge_count, instance->max_num_sge);
3262                 return 1;
3263         }
3264
3265         if (instance->adapter_type >= VENTURA_SERIES) {
3266                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3267                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3268                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3269         } else {
3270                 /* numSGE store lower 8 bit of sge_count.
3271                  * numSGEExt store higher 8 bit of sge_count
3272                  */
3273                 io_request->RaidContext.raid_context.num_sge = sge_count;
3274                 io_request->RaidContext.raid_context.num_sge_ext =
3275                         (u8)(sge_count >> 8);
3276         }
3277
3278         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3279
3280         if (scp->sc_data_direction == DMA_TO_DEVICE)
3281                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3282         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3283                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3284
3285         io_request->SGLOffset0 =
3286                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3287
3288         io_request->SenseBufferLowAddress =
3289                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3290         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3291
3292         cmd->scmd = scp;
3293         megasas_priv(scp)->cmd_priv = cmd;
3294
3295         return 0;
3296 }
3297
3298 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3299 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3300 {
3301         u8 *p;
3302         struct fusion_context *fusion;
3303
3304         fusion = instance->ctrl_context;
3305         p = fusion->req_frames_desc +
3306                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3307
3308         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3309 }
3310
3311
3312 /* megasas_prepate_secondRaid1_IO
3313  *  It prepares the raid 1 second IO
3314  */
3315 static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3316                                            struct megasas_cmd_fusion *cmd,
3317                                            struct megasas_cmd_fusion *r1_cmd)
3318 {
3319         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3320         struct fusion_context *fusion;
3321         fusion = instance->ctrl_context;
3322         req_desc = cmd->request_desc;
3323         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3324         memcpy(r1_cmd->io_request, cmd->io_request,
3325                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3326         memcpy(r1_cmd->io_request->SGLs, cmd->io_request->SGLs,
3327                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3328         /*sense buffer is different for r1 command*/
3329         r1_cmd->io_request->SenseBufferLowAddress =
3330                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3331         r1_cmd->scmd = cmd->scmd;
3332         req_desc2 = megasas_get_request_descriptor(instance,
3333                                                    (r1_cmd->index - 1));
3334         req_desc2->Words = 0;
3335         r1_cmd->request_desc = req_desc2;
3336         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3337         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3338         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3339         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3340         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3341         cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3342                         cpu_to_le16(r1_cmd->index);
3343         r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3344                         cpu_to_le16(cmd->index);
3345         /*MSIxIndex of both commands request descriptors should be same*/
3346         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3347                         cmd->request_desc->SCSIIO.MSIxIndex;
3348         /*span arm is different for r1 cmd*/
3349         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3350                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3351 }
3352
3353 /**
3354  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3355  *                                     issuing non IOCTL cmd
3356  * @instance:                   Adapter soft state
3357  * @scmd:                       pointer to scsi cmd from OS
3358  */
3359 static u32
3360 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3361                                    struct scsi_cmnd *scmd)
3362 {
3363         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3364         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3365         u32 index;
3366
3367         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3368                 instance->ldio_threshold &&
3369                 (atomic_inc_return(&instance->ldio_outstanding) >
3370                 instance->ldio_threshold)) {
3371                 atomic_dec(&instance->ldio_outstanding);
3372                 return SCSI_MLQUEUE_DEVICE_BUSY;
3373         }
3374
3375         if (atomic_inc_return(&instance->fw_outstanding) >
3376                         instance->host->can_queue) {
3377                 atomic_dec(&instance->fw_outstanding);
3378                 return SCSI_MLQUEUE_HOST_BUSY;
3379         }
3380
3381         cmd = megasas_get_cmd_fusion(instance, scsi_cmd_to_rq(scmd)->tag);
3382
3383         if (!cmd) {
3384                 atomic_dec(&instance->fw_outstanding);
3385                 return SCSI_MLQUEUE_HOST_BUSY;
3386         }
3387
3388         index = cmd->index;
3389
3390         req_desc = megasas_get_request_descriptor(instance, index-1);
3391
3392         req_desc->Words = 0;
3393         cmd->request_desc = req_desc;
3394
3395         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3396                 megasas_return_cmd_fusion(instance, cmd);
3397                 dev_err(&instance->pdev->dev, "Error building command\n");
3398                 cmd->request_desc = NULL;
3399                 atomic_dec(&instance->fw_outstanding);
3400                 return SCSI_MLQUEUE_HOST_BUSY;
3401         }
3402
3403         req_desc = cmd->request_desc;
3404         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3405
3406         if (cmd->io_request->ChainOffset != 0 &&
3407             cmd->io_request->ChainOffset != 0xF)
3408                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3409                        "correct : %x\n", cmd->io_request->ChainOffset);
3410         /*
3411          *      if it is raid 1/10 fp write capable.
3412          *      try to get second command from pool and construct it.
3413          *      From FW, it has confirmed that lba values of two PDs
3414          *      corresponds to single R1/10 LD are always same
3415          *
3416          */
3417         /*      driver side count always should be less than max_fw_cmds
3418          *      to get new command
3419          */
3420         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3421                 r1_cmd = megasas_get_cmd_fusion(instance,
3422                                 scsi_cmd_to_rq(scmd)->tag + instance->max_fw_cmds);
3423                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3424         }
3425
3426
3427         /*
3428          * Issue the command to the FW
3429          */
3430
3431         megasas_sdev_busy_inc(instance, scmd);
3432         megasas_fire_cmd_fusion(instance, req_desc);
3433
3434         if (r1_cmd)
3435                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3436
3437
3438         return 0;
3439 }
3440
3441 /**
3442  * megasas_complete_r1_command -
3443  * completes R1 FP write commands which has valid peer smid
3444  * @instance:                   Adapter soft state
3445  * @cmd:                        MPT command frame
3446  *
3447  */
3448 static inline void
3449 megasas_complete_r1_command(struct megasas_instance *instance,
3450                             struct megasas_cmd_fusion *cmd)
3451 {
3452         u8 *sense, status, ex_status;
3453         u32 data_length;
3454         u16 peer_smid;
3455         struct fusion_context *fusion;
3456         struct megasas_cmd_fusion *r1_cmd = NULL;
3457         struct scsi_cmnd *scmd_local = NULL;
3458         struct RAID_CONTEXT_G35 *rctx_g35;
3459
3460         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3461         fusion = instance->ctrl_context;
3462         peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid);
3463
3464         r1_cmd = fusion->cmd_list[peer_smid - 1];
3465         scmd_local = cmd->scmd;
3466         status = rctx_g35->status;
3467         ex_status = rctx_g35->ex_status;
3468         data_length = cmd->io_request->DataLength;
3469         sense = cmd->sense;
3470
3471         cmd->cmd_completed = true;
3472
3473         /* Check if peer command is completed or not*/
3474         if (r1_cmd->cmd_completed) {
3475                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3476                 if (rctx_g35->status != MFI_STAT_OK) {
3477                         status = rctx_g35->status;
3478                         ex_status = rctx_g35->ex_status;
3479                         data_length = r1_cmd->io_request->DataLength;
3480                         sense = r1_cmd->sense;
3481                 }
3482
3483                 megasas_return_cmd_fusion(instance, r1_cmd);
3484                 map_cmd_status(fusion, scmd_local, status, ex_status,
3485                                le32_to_cpu(data_length), sense);
3486                 if (instance->ldio_threshold &&
3487                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3488                         atomic_dec(&instance->ldio_outstanding);
3489                 megasas_priv(scmd_local)->cmd_priv = NULL;
3490                 megasas_return_cmd_fusion(instance, cmd);
3491                 scsi_dma_unmap(scmd_local);
3492                 megasas_sdev_busy_dec(instance, scmd_local);
3493                 scsi_done(scmd_local);
3494         }
3495 }
3496
3497 /**
3498  * access_irq_context:          Access to reply processing
3499  * @irq_context:                IRQ context
3500  *
3501  * Synchronize access to reply processing.
3502  *
3503  * Return:  true on success, false on failure.
3504  */
3505 static inline
3506 bool access_irq_context(struct megasas_irq_context  *irq_context)
3507 {
3508         if (!irq_context)
3509                 return true;
3510
3511         if (atomic_add_unless(&irq_context->in_used, 1, 1))
3512                 return true;
3513
3514         return false;
3515 }
3516
3517 /**
3518  * release_irq_context:         Release reply processing
3519  * @irq_context:                IRQ context
3520  *
3521  * Release access of reply processing.
3522  *
3523  * Return: Nothing.
3524  */
3525 static inline
3526 void release_irq_context(struct megasas_irq_context  *irq_context)
3527 {
3528         if (irq_context)
3529                 atomic_dec(&irq_context->in_used);
3530 }
3531
3532 /**
3533  * complete_cmd_fusion -        Completes command
3534  * @instance:                   Adapter soft state
3535  * @MSIxIndex:                  MSI number
3536  * @irq_context:                IRQ context
3537  *
3538  * Completes all commands that is in reply descriptor queue
3539  */
3540 static int
3541 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex,
3542                     struct megasas_irq_context *irq_context)
3543 {
3544         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3545         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3546         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3547         struct fusion_context *fusion;
3548         struct megasas_cmd *cmd_mfi;
3549         struct megasas_cmd_fusion *cmd_fusion;
3550         u16 smid, num_completed;
3551         u8 reply_descript_type, *sense, status, extStatus;
3552         u32 device_id, data_length;
3553         union desc_value d_val;
3554         struct LD_LOAD_BALANCE_INFO *lbinfo;
3555         int threshold_reply_count = 0;
3556         struct scsi_cmnd *scmd_local = NULL;
3557         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3558         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3559
3560         fusion = instance->ctrl_context;
3561
3562         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3563                 return IRQ_HANDLED;
3564
3565         if (!access_irq_context(irq_context))
3566                 return 0;
3567
3568         desc = fusion->reply_frames_desc[MSIxIndex] +
3569                                 fusion->last_reply_idx[MSIxIndex];
3570
3571         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3572
3573         d_val.word = desc->Words;
3574
3575         reply_descript_type = reply_desc->ReplyFlags &
3576                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3577
3578         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
3579                 release_irq_context(irq_context);
3580                 return IRQ_NONE;
3581         }
3582
3583         num_completed = 0;
3584
3585         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3586                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3587
3588                 smid = le16_to_cpu(reply_desc->SMID);
3589                 cmd_fusion = fusion->cmd_list[smid - 1];
3590                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3591                                                 cmd_fusion->io_request;
3592
3593                 scmd_local = cmd_fusion->scmd;
3594                 status = scsi_io_req->RaidContext.raid_context.status;
3595                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3596                 sense = cmd_fusion->sense;
3597                 data_length = scsi_io_req->DataLength;
3598
3599                 switch (scsi_io_req->Function) {
3600                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3601                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3602                                                 cmd_fusion->io_request;
3603                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3604                                                 &mr_tm_req->TmRequest;
3605                         dev_dbg(&instance->pdev->dev, "TM completion:"
3606                                 "type: 0x%x TaskMID: 0x%x\n",
3607                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3608                         complete(&cmd_fusion->done);
3609                         break;
3610                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3611                         /* Update load balancing info */
3612                         if (fusion->load_balance_info &&
3613                             (megasas_priv(cmd_fusion->scmd)->status &
3614                             MEGASAS_LOAD_BALANCE_FLAG)) {
3615                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3616                                 lbinfo = &fusion->load_balance_info[device_id];
3617                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3618                                 megasas_priv(cmd_fusion->scmd)->status &=
3619                                         ~MEGASAS_LOAD_BALANCE_FLAG;
3620                         }
3621                         fallthrough;    /* and complete IO */
3622                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3623                         atomic_dec(&instance->fw_outstanding);
3624                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3625                                 map_cmd_status(fusion, scmd_local, status,
3626                                                extStatus, le32_to_cpu(data_length),
3627                                                sense);
3628                                 if (instance->ldio_threshold &&
3629                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3630                                         atomic_dec(&instance->ldio_outstanding);
3631                                 megasas_priv(scmd_local)->cmd_priv = NULL;
3632                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3633                                 scsi_dma_unmap(scmd_local);
3634                                 megasas_sdev_busy_dec(instance, scmd_local);
3635                                 scsi_done(scmd_local);
3636                         } else  /* Optimal VD - R1 FP command completion. */
3637                                 megasas_complete_r1_command(instance, cmd_fusion);
3638                         break;
3639                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3640                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3641                         /* Poll mode. Dummy free.
3642                          * In case of Interrupt mode, caller has reverse check.
3643                          */
3644                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3645                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3646                                 megasas_return_cmd(instance, cmd_mfi);
3647                         } else
3648                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3649                         break;
3650                 }
3651
3652                 fusion->last_reply_idx[MSIxIndex]++;
3653                 if (fusion->last_reply_idx[MSIxIndex] >=
3654                     fusion->reply_q_depth)
3655                         fusion->last_reply_idx[MSIxIndex] = 0;
3656
3657                 desc->Words = cpu_to_le64(ULLONG_MAX);
3658                 num_completed++;
3659                 threshold_reply_count++;
3660
3661                 /* Get the next reply descriptor */
3662                 if (!fusion->last_reply_idx[MSIxIndex])
3663                         desc = fusion->reply_frames_desc[MSIxIndex];
3664                 else
3665                         desc++;
3666
3667                 reply_desc =
3668                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3669
3670                 d_val.word = desc->Words;
3671
3672                 reply_descript_type = reply_desc->ReplyFlags &
3673                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3674
3675                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3676                         break;
3677                 /*
3678                  * Write to reply post host index register after completing threshold
3679                  * number of reply counts and still there are more replies in reply queue
3680                  * pending to be completed
3681                  */
3682                 if (threshold_reply_count >= instance->threshold_reply_count) {
3683                         if (instance->msix_combined)
3684                                 writel(((MSIxIndex & 0x7) << 24) |
3685                                         fusion->last_reply_idx[MSIxIndex],
3686                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3687                         else
3688                                 writel((MSIxIndex << 24) |
3689                                         fusion->last_reply_idx[MSIxIndex],
3690                                         instance->reply_post_host_index_addr[0]);
3691                         threshold_reply_count = 0;
3692                         if (irq_context) {
3693                                 if (!irq_context->irq_poll_scheduled) {
3694                                         irq_context->irq_poll_scheduled = true;
3695                                         irq_context->irq_line_enable = true;
3696                                         irq_poll_sched(&irq_context->irqpoll);
3697                                 }
3698                                 release_irq_context(irq_context);
3699                                 return num_completed;
3700                         }
3701                 }
3702         }
3703
3704         if (num_completed) {
3705                 wmb();
3706                 if (instance->msix_combined)
3707                         writel(((MSIxIndex & 0x7) << 24) |
3708                                 fusion->last_reply_idx[MSIxIndex],
3709                                 instance->reply_post_host_index_addr[MSIxIndex/8]);
3710                 else
3711                         writel((MSIxIndex << 24) |
3712                                 fusion->last_reply_idx[MSIxIndex],
3713                                 instance->reply_post_host_index_addr[0]);
3714                 megasas_check_and_restore_queue_depth(instance);
3715         }
3716
3717         release_irq_context(irq_context);
3718
3719         return num_completed;
3720 }
3721
3722 int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
3723 {
3724
3725         struct megasas_instance *instance;
3726         int num_entries = 0;
3727         struct fusion_context *fusion;
3728
3729         instance = (struct megasas_instance *)shost->hostdata;
3730
3731         fusion = instance->ctrl_context;
3732
3733         queue_num = queue_num + instance->low_latency_index_start;
3734
3735         if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1))
3736                 return 0;
3737
3738         num_entries = complete_cmd_fusion(instance, queue_num, NULL);
3739         atomic_dec(&fusion->busy_mq_poll[queue_num]);
3740
3741         return num_entries;
3742 }
3743
3744 /**
3745  * megasas_enable_irq_poll() - enable irqpoll
3746  * @instance:                   Adapter soft state
3747  */
3748 static void megasas_enable_irq_poll(struct megasas_instance *instance)
3749 {
3750         u32 count, i;
3751         struct megasas_irq_context *irq_ctx;
3752
3753         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3754
3755         for (i = 0; i < count; i++) {
3756                 irq_ctx = &instance->irq_context[i];
3757                 irq_poll_enable(&irq_ctx->irqpoll);
3758         }
3759 }
3760
3761 /**
3762  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3763  * @instance_addr:                      Adapter soft state address
3764  */
3765 static void megasas_sync_irqs(unsigned long instance_addr)
3766 {
3767         u32 count, i;
3768         struct megasas_instance *instance =
3769                 (struct megasas_instance *)instance_addr;
3770         struct megasas_irq_context *irq_ctx;
3771
3772         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3773
3774         for (i = 0; i < count; i++) {
3775                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3776                 irq_ctx = &instance->irq_context[i];
3777                 irq_poll_disable(&irq_ctx->irqpoll);
3778                 if (irq_ctx->irq_poll_scheduled) {
3779                         irq_ctx->irq_poll_scheduled = false;
3780                         enable_irq(irq_ctx->os_irq);
3781                         complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3782                 }
3783         }
3784 }
3785
3786 /**
3787  * megasas_irqpoll() - process a queue for completed reply descriptors
3788  * @irqpoll:    IRQ poll structure associated with queue to poll.
3789  * @budget:     Threshold of reply descriptors to process per poll.
3790  *
3791  * Return: The number of entries processed.
3792  */
3793
3794 int megasas_irqpoll(struct irq_poll *irqpoll, int budget)
3795 {
3796         struct megasas_irq_context *irq_ctx;
3797         struct megasas_instance *instance;
3798         int num_entries;
3799
3800         irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll);
3801         instance = irq_ctx->instance;
3802
3803         if (irq_ctx->irq_line_enable) {
3804                 disable_irq_nosync(irq_ctx->os_irq);
3805                 irq_ctx->irq_line_enable = false;
3806         }
3807
3808         num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3809         if (num_entries < budget) {
3810                 irq_poll_complete(irqpoll);
3811                 irq_ctx->irq_poll_scheduled = false;
3812                 enable_irq(irq_ctx->os_irq);
3813                 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3814         }
3815
3816         return num_entries;
3817 }
3818
3819 /**
3820  * megasas_complete_cmd_dpc_fusion -    Completes command
3821  * @instance_addr:                      Adapter soft state address
3822  *
3823  * Tasklet to complete cmds
3824  */
3825 static void
3826 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3827 {
3828         struct megasas_instance *instance =
3829                 (struct megasas_instance *)instance_addr;
3830         struct megasas_irq_context *irq_ctx = NULL;
3831         u32 count, MSIxIndex;
3832
3833         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3834
3835         /* If we have already declared adapter dead, donot complete cmds */
3836         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3837                 return;
3838
3839         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) {
3840                 irq_ctx = &instance->irq_context[MSIxIndex];
3841                 complete_cmd_fusion(instance, MSIxIndex, irq_ctx);
3842         }
3843 }
3844
3845 /**
3846  * megasas_isr_fusion - isr entry point
3847  * @irq:        IRQ number
3848  * @devp:       IRQ context
3849  */
3850 static irqreturn_t megasas_isr_fusion(int irq, void *devp)
3851 {
3852         struct megasas_irq_context *irq_context = devp;
3853         struct megasas_instance *instance = irq_context->instance;
3854         u32 mfiStatus;
3855
3856         if (instance->mask_interrupts)
3857                 return IRQ_NONE;
3858
3859         if (irq_context->irq_poll_scheduled)
3860                 return IRQ_HANDLED;
3861
3862         if (!instance->msix_vectors) {
3863                 mfiStatus = instance->instancet->clear_intr(instance);
3864                 if (!mfiStatus)
3865                         return IRQ_NONE;
3866         }
3867
3868         /* If we are resetting, bail */
3869         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3870                 instance->instancet->clear_intr(instance);
3871                 return IRQ_HANDLED;
3872         }
3873
3874         return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context)
3875                         ? IRQ_HANDLED : IRQ_NONE;
3876 }
3877
3878 /**
3879  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3880  * @instance:                   Adapter soft state
3881  * @mfi_cmd:                    megasas_cmd pointer
3882  *
3883  */
3884 static void
3885 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3886                         struct megasas_cmd *mfi_cmd)
3887 {
3888         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3889         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3890         struct megasas_cmd_fusion *cmd;
3891         struct fusion_context *fusion;
3892         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3893
3894         fusion = instance->ctrl_context;
3895
3896         cmd = megasas_get_cmd_fusion(instance,
3897                         instance->max_scsi_cmds + mfi_cmd->index);
3898
3899         /*  Save the smid. To be used for returning the cmd */
3900         mfi_cmd->context.smid = cmd->index;
3901
3902         /*
3903          * For cmds where the flag is set, store the flag and check
3904          * on completion. For cmds with this flag, don't call
3905          * megasas_complete_cmd
3906          */
3907
3908         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3909                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3910
3911         io_req = cmd->io_request;
3912
3913         if (instance->adapter_type >= INVADER_SERIES) {
3914                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3915                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3916                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3917                 sgl_ptr_end->Flags = 0;
3918         }
3919
3920         mpi25_ieee_chain =
3921           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3922
3923         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3924         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3925                                        SGL) / 4;
3926         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3927
3928         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3929
3930         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3931                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3932
3933         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3934 }
3935
3936 /**
3937  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3938  * @instance:                   Adapter soft state
3939  * @cmd:                        mfi cmd to build
3940  *
3941  */
3942 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3943 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3944 {
3945         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3946         u16 index;
3947
3948         build_mpt_mfi_pass_thru(instance, cmd);
3949         index = cmd->context.smid;
3950
3951         req_desc = megasas_get_request_descriptor(instance, index - 1);
3952
3953         req_desc->Words = 0;
3954         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3955                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3956
3957         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3958
3959         return req_desc;
3960 }
3961
3962 /**
3963  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3964  * @instance:                   Adapter soft state
3965  * @cmd:                        mfi cmd pointer
3966  *
3967  */
3968 static void
3969 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3970                           struct megasas_cmd *cmd)
3971 {
3972         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3973
3974         req_desc = build_mpt_cmd(instance, cmd);
3975
3976         megasas_fire_cmd_fusion(instance, req_desc);
3977         return;
3978 }
3979
3980 /**
3981  * megasas_release_fusion -     Reverses the FW initialization
3982  * @instance:                   Adapter soft state
3983  */
3984 void
3985 megasas_release_fusion(struct megasas_instance *instance)
3986 {
3987         megasas_free_ioc_init_cmd(instance);
3988         megasas_free_cmds(instance);
3989         megasas_free_cmds_fusion(instance);
3990
3991         iounmap(instance->reg_set);
3992
3993         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3994 }
3995
3996 /**
3997  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3998  * @instance:                   Adapter soft state
3999  */
4000 static u32
4001 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
4002 {
4003         return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
4004 }
4005
4006 /**
4007  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
4008  * @instance:                           Controller's soft instance
4009  * @return:                             Number of allocated host crash buffers
4010  */
4011 static void
4012 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
4013 {
4014         unsigned int i;
4015
4016         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
4017                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
4018                 if (!instance->crash_buf[i]) {
4019                         dev_info(&instance->pdev->dev, "Firmware crash dump "
4020                                 "memory allocation failed at index %d\n", i);
4021                         break;
4022                 }
4023         }
4024         instance->drv_buf_alloc = i;
4025 }
4026
4027 /**
4028  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
4029  * @instance:                           Controller's soft instance
4030  */
4031 void
4032 megasas_free_host_crash_buffer(struct megasas_instance *instance)
4033 {
4034         unsigned int i;
4035         for (i = 0; i < instance->drv_buf_alloc; i++) {
4036                 vfree(instance->crash_buf[i]);
4037         }
4038         instance->drv_buf_index = 0;
4039         instance->drv_buf_alloc = 0;
4040         instance->fw_crash_state = UNAVAILABLE;
4041         instance->fw_crash_buffer_size = 0;
4042 }
4043
4044 /**
4045  * megasas_adp_reset_fusion -   For controller reset
4046  * @instance:                           Controller's soft instance
4047  * @regs:                               MFI register set
4048  */
4049 static int
4050 megasas_adp_reset_fusion(struct megasas_instance *instance,
4051                          struct megasas_register_set __iomem *regs)
4052 {
4053         u32 host_diag, abs_state, retry;
4054
4055         /* Now try to reset the chip */
4056         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4057         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4058         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4059         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4060         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4061         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4062         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4063
4064         /* Check that the diag write enable (DRWE) bit is on */
4065         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4066         retry = 0;
4067         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
4068                 msleep(100);
4069                 host_diag = megasas_readl(instance,
4070                                           &instance->reg_set->fusion_host_diag);
4071                 if (retry++ == 100) {
4072                         dev_warn(&instance->pdev->dev,
4073                                 "Host diag unlock failed from %s %d\n",
4074                                 __func__, __LINE__);
4075                         break;
4076                 }
4077         }
4078         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
4079                 return -1;
4080
4081         /* Send chip reset command */
4082         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
4083                 &instance->reg_set->fusion_host_diag);
4084         msleep(3000);
4085
4086         /* Make sure reset adapter bit is cleared */
4087         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4088         retry = 0;
4089         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
4090                 msleep(100);
4091                 host_diag = megasas_readl(instance,
4092                                           &instance->reg_set->fusion_host_diag);
4093                 if (retry++ == 1000) {
4094                         dev_warn(&instance->pdev->dev,
4095                                 "Diag reset adapter never cleared %s %d\n",
4096                                 __func__, __LINE__);
4097                         break;
4098                 }
4099         }
4100         if (host_diag & HOST_DIAG_RESET_ADAPTER)
4101                 return -1;
4102
4103         abs_state = instance->instancet->read_fw_status_reg(instance)
4104                         & MFI_STATE_MASK;
4105         retry = 0;
4106
4107         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
4108                 msleep(100);
4109                 abs_state = instance->instancet->
4110                         read_fw_status_reg(instance) & MFI_STATE_MASK;
4111         }
4112         if (abs_state <= MFI_STATE_FW_INIT) {
4113                 dev_warn(&instance->pdev->dev,
4114                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
4115                         abs_state, __func__, __LINE__);
4116                 return -1;
4117         }
4118
4119         return 0;
4120 }
4121
4122 /**
4123  * megasas_check_reset_fusion - For controller reset check
4124  * @instance:                           Controller's soft instance
4125  * @regs:                               MFI register set
4126  */
4127 static int
4128 megasas_check_reset_fusion(struct megasas_instance *instance,
4129                            struct megasas_register_set __iomem *regs)
4130 {
4131         return 0;
4132 }
4133
4134 /**
4135  * megasas_trigger_snap_dump -  Trigger snap dump in FW
4136  * @instance:                   Soft instance of adapter
4137  */
4138 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
4139 {
4140         int j;
4141         u32 fw_state, abs_state;
4142
4143         if (!instance->disableOnlineCtrlReset) {
4144                 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
4145                 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
4146                        &instance->reg_set->doorbell);
4147                 readl(&instance->reg_set->doorbell);
4148         }
4149
4150         for (j = 0; j < instance->snapdump_wait_time; j++) {
4151                 abs_state = instance->instancet->read_fw_status_reg(instance);
4152                 fw_state = abs_state & MFI_STATE_MASK;
4153                 if (fw_state == MFI_STATE_FAULT) {
4154                         dev_printk(KERN_ERR, &instance->pdev->dev,
4155                                    "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4156                                    abs_state & MFI_STATE_FAULT_CODE,
4157                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4158                         return;
4159                 }
4160                 msleep(1000);
4161         }
4162 }
4163
4164 /* This function waits for outstanding commands on fusion to complete */
4165 static int
4166 megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
4167                                     int reason, int *convert)
4168 {
4169         int i, outstanding, retval = 0, hb_seconds_missed = 0;
4170         u32 fw_state, abs_state;
4171         u32 waittime_for_io_completion;
4172
4173         waittime_for_io_completion =
4174                 min_t(u32, resetwaittime,
4175                         (resetwaittime - instance->snapdump_wait_time));
4176
4177         if (reason == MFI_IO_TIMEOUT_OCR) {
4178                 dev_info(&instance->pdev->dev,
4179                         "MFI command is timed out\n");
4180                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4181                 if (instance->snapdump_wait_time)
4182                         megasas_trigger_snap_dump(instance);
4183                 retval = 1;
4184                 goto out;
4185         }
4186
4187         for (i = 0; i < waittime_for_io_completion; i++) {
4188                 /* Check if firmware is in fault state */
4189                 abs_state = instance->instancet->read_fw_status_reg(instance);
4190                 fw_state = abs_state & MFI_STATE_MASK;
4191                 if (fw_state == MFI_STATE_FAULT) {
4192                         dev_printk(KERN_ERR, &instance->pdev->dev,
4193                                    "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4194                                    abs_state & MFI_STATE_FAULT_CODE,
4195                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4196                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4197                         if (instance->requestorId && reason) {
4198                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
4199                                 " state while polling during"
4200                                 " I/O timeout handling for %d\n",
4201                                 instance->host->host_no);
4202                                 *convert = 1;
4203                         }
4204
4205                         retval = 1;
4206                         goto out;
4207                 }
4208
4209
4210                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
4211                 if (instance->requestorId && !reason) {
4212                         retval = 1;
4213                         goto out;
4214                 }
4215
4216                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
4217                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
4218                         if (instance->hb_host_mem->HB.fwCounter !=
4219                             instance->hb_host_mem->HB.driverCounter) {
4220                                 instance->hb_host_mem->HB.driverCounter =
4221                                         instance->hb_host_mem->HB.fwCounter;
4222                                 hb_seconds_missed = 0;
4223                         } else {
4224                                 hb_seconds_missed++;
4225                                 if (hb_seconds_missed ==
4226                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
4227                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
4228                                                " Heartbeat never completed "
4229                                                " while polling during I/O "
4230                                                " timeout handling for "
4231                                                "scsi%d.\n",
4232                                                instance->host->host_no);
4233                                                *convert = 1;
4234                                                retval = 1;
4235                                                goto out;
4236                                 }
4237                         }
4238                 }
4239
4240                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4241                 outstanding = atomic_read(&instance->fw_outstanding);
4242                 if (!outstanding)
4243                         goto out;
4244
4245                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4246                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
4247                                "commands to complete for scsi%d\n", i,
4248                                outstanding, instance->host->host_no);
4249                 }
4250                 msleep(1000);
4251         }
4252
4253         if (instance->snapdump_wait_time) {
4254                 megasas_trigger_snap_dump(instance);
4255                 retval = 1;
4256                 goto out;
4257         }
4258
4259         if (atomic_read(&instance->fw_outstanding)) {
4260                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
4261                        "will reset adapter scsi%d.\n",
4262                        instance->host->host_no);
4263                 *convert = 1;
4264                 retval = 1;
4265         }
4266
4267 out:
4268         return retval;
4269 }
4270
4271 void  megasas_reset_reply_desc(struct megasas_instance *instance)
4272 {
4273         int i, j, count;
4274         struct fusion_context *fusion;
4275         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
4276
4277         fusion = instance->ctrl_context;
4278         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
4279         count += instance->iopoll_q_count;
4280
4281         for (i = 0 ; i < count ; i++) {
4282                 fusion->last_reply_idx[i] = 0;
4283                 reply_desc = fusion->reply_frames_desc[i];
4284                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
4285                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
4286         }
4287 }
4288
4289 /*
4290  * megasas_refire_mgmt_cmd :    Re-fire management commands
4291  * @instance:                           Controller's soft instance
4292 */
4293 static void megasas_refire_mgmt_cmd(struct megasas_instance *instance,
4294                              bool return_ioctl)
4295 {
4296         int j;
4297         struct megasas_cmd_fusion *cmd_fusion;
4298         struct fusion_context *fusion;
4299         struct megasas_cmd *cmd_mfi;
4300         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4301         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
4302         u16 smid;
4303         bool refire_cmd = false;
4304         u8 result;
4305         u32 opcode = 0;
4306
4307         fusion = instance->ctrl_context;
4308
4309         /* Re-fire management commands.
4310          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4311          */
4312         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4313                 cmd_fusion = fusion->cmd_list[j];
4314                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4315                 smid = le16_to_cpu(cmd_mfi->context.smid);
4316                 result = REFIRE_CMD;
4317
4318                 if (!smid)
4319                         continue;
4320
4321                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4322
4323                 switch (cmd_mfi->frame->hdr.cmd) {
4324                 case MFI_CMD_DCMD:
4325                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4326                          /* Do not refire shutdown command */
4327                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4328                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4329                                 result = COMPLETE_CMD;
4330                                 break;
4331                         }
4332
4333                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4334                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4335                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4336
4337                         if (!refire_cmd)
4338                                 result = RETURN_CMD;
4339
4340                         break;
4341                 case MFI_CMD_NVME:
4342                         if (!instance->support_nvme_passthru) {
4343                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4344                                 result = COMPLETE_CMD;
4345                         }
4346
4347                         break;
4348                 case MFI_CMD_TOOLBOX:
4349                         if (!instance->support_pci_lane_margining) {
4350                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4351                                 result = COMPLETE_CMD;
4352                         }
4353
4354                         break;
4355                 default:
4356                         break;
4357                 }
4358
4359                 if (return_ioctl && cmd_mfi->sync_cmd &&
4360                     cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) {
4361                         dev_err(&instance->pdev->dev,
4362                                 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x\n",
4363                                 __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4364                                 le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4365                         cmd_mfi->cmd_status_drv = DCMD_BUSY;
4366                         result = COMPLETE_CMD;
4367                 }
4368
4369                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
4370                                 cmd_fusion->io_request;
4371                 if (scsi_io_req->Function == MPI2_FUNCTION_SCSI_TASK_MGMT)
4372                         result = RETURN_CMD;
4373
4374                 switch (result) {
4375                 case REFIRE_CMD:
4376                         megasas_fire_cmd_fusion(instance, req_desc);
4377                         break;
4378                 case RETURN_CMD:
4379                         megasas_return_cmd(instance, cmd_mfi);
4380                         break;
4381                 case COMPLETE_CMD:
4382                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4383                         break;
4384                 }
4385         }
4386 }
4387
4388 /*
4389  * megasas_return_polled_cmds: Return polled mode commands back to the pool
4390  *                             before initiating an OCR.
4391  * @instance:                  Controller's soft instance
4392  */
4393 static void
4394 megasas_return_polled_cmds(struct megasas_instance *instance)
4395 {
4396         int i;
4397         struct megasas_cmd_fusion *cmd_fusion;
4398         struct fusion_context *fusion;
4399         struct megasas_cmd *cmd_mfi;
4400
4401         fusion = instance->ctrl_context;
4402
4403         for (i = instance->max_scsi_cmds; i < instance->max_fw_cmds; i++) {
4404                 cmd_fusion = fusion->cmd_list[i];
4405                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4406
4407                 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
4408                         if (megasas_dbg_lvl & OCR_DEBUG)
4409                                 dev_info(&instance->pdev->dev,
4410                                          "%s %d return cmd 0x%x opcode 0x%x\n",
4411                                          __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4412                                          le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4413                         cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
4414                         megasas_return_cmd(instance, cmd_mfi);
4415                 }
4416         }
4417 }
4418
4419 /*
4420  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4421  * @instance: per adapter struct
4422  * @channel: the channel assigned by the OS
4423  * @id: the id assigned by the OS
4424  *
4425  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4426  */
4427
4428 static int megasas_track_scsiio(struct megasas_instance *instance,
4429                 int id, int channel)
4430 {
4431         int i, found = 0;
4432         struct megasas_cmd_fusion *cmd_fusion;
4433         struct fusion_context *fusion;
4434         fusion = instance->ctrl_context;
4435
4436         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4437                 cmd_fusion = fusion->cmd_list[i];
4438                 if (cmd_fusion->scmd &&
4439                         (cmd_fusion->scmd->device->id == id &&
4440                         cmd_fusion->scmd->device->channel == channel)) {
4441                         dev_info(&instance->pdev->dev,
4442                                 "SCSI commands pending to target"
4443                                 "channel %d id %d \tSMID: 0x%x\n",
4444                                 channel, id, cmd_fusion->index);
4445                         scsi_print_command(cmd_fusion->scmd);
4446                         found = 1;
4447                         break;
4448                 }
4449         }
4450
4451         return found ? FAILED : SUCCESS;
4452 }
4453
4454 /**
4455  * megasas_tm_response_code - translation of device response code
4456  * @instance:   Controller's soft instance
4457  * @mpi_reply:  MPI reply returned by firmware
4458  *
4459  * Return nothing.
4460  */
4461 static void
4462 megasas_tm_response_code(struct megasas_instance *instance,
4463                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4464 {
4465         char *desc;
4466
4467         switch (mpi_reply->ResponseCode) {
4468         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4469                 desc = "task management request completed";
4470                 break;
4471         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4472                 desc = "invalid frame";
4473                 break;
4474         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4475                 desc = "task management request not supported";
4476                 break;
4477         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4478                 desc = "task management request failed";
4479                 break;
4480         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4481                 desc = "task management request succeeded";
4482                 break;
4483         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4484                 desc = "invalid lun";
4485                 break;
4486         case 0xA:
4487                 desc = "overlapped tag attempted";
4488                 break;
4489         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4490                 desc = "task queued, however not sent to target";
4491                 break;
4492         default:
4493                 desc = "unknown";
4494                 break;
4495         }
4496         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4497                 mpi_reply->ResponseCode, desc);
4498         dev_dbg(&instance->pdev->dev,
4499                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4500                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4501                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4502                 mpi_reply->Function, mpi_reply->TaskType,
4503                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4504 }
4505
4506 /**
4507  * megasas_issue_tm - main routine for sending tm requests
4508  * @instance: per adapter struct
4509  * @device_handle: device handle
4510  * @channel: the channel assigned by the OS
4511  * @id: the id assigned by the OS
4512  * @smid_task: smid assigned to the task
4513  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4514  * @mr_device_priv_data: private data
4515  * Context: user
4516  *
4517  * MegaRaid use MPT interface for Task Magement request.
4518  * A generic API for sending task management requests to firmware.
4519  *
4520  * Return SUCCESS or FAILED.
4521  */
4522 static int
4523 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4524         uint channel, uint id, u16 smid_task, u8 type,
4525         struct MR_PRIV_DEVICE *mr_device_priv_data)
4526 {
4527         struct MR_TASK_MANAGE_REQUEST *mr_request;
4528         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4529         unsigned long timeleft;
4530         struct megasas_cmd_fusion *cmd_fusion;
4531         struct megasas_cmd *cmd_mfi;
4532         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4533         struct fusion_context *fusion = NULL;
4534         struct megasas_cmd_fusion *scsi_lookup;
4535         int rc;
4536         int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4537         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4538
4539         fusion = instance->ctrl_context;
4540
4541         cmd_mfi = megasas_get_cmd(instance);
4542
4543         if (!cmd_mfi) {
4544                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4545                         __func__, __LINE__);
4546                 return -ENOMEM;
4547         }
4548
4549         cmd_fusion = megasas_get_cmd_fusion(instance,
4550                         instance->max_scsi_cmds + cmd_mfi->index);
4551
4552         /*  Save the smid. To be used for returning the cmd */
4553         cmd_mfi->context.smid = cmd_fusion->index;
4554
4555         req_desc = megasas_get_request_descriptor(instance,
4556                         (cmd_fusion->index - 1));
4557
4558         cmd_fusion->request_desc = req_desc;
4559         req_desc->Words = 0;
4560
4561         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4562         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4563         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4564         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4565         mpi_request->DevHandle = cpu_to_le16(device_handle);
4566         mpi_request->TaskType = type;
4567         mpi_request->TaskMID = cpu_to_le16(smid_task);
4568         mpi_request->LUN[1] = 0;
4569
4570
4571         req_desc = cmd_fusion->request_desc;
4572         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4573         req_desc->HighPriority.RequestFlags =
4574                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4575                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4576         req_desc->HighPriority.MSIxIndex =  0;
4577         req_desc->HighPriority.LMID = 0;
4578         req_desc->HighPriority.Reserved1 = 0;
4579
4580         if (channel < MEGASAS_MAX_PD_CHANNELS)
4581                 mr_request->tmReqFlags.isTMForPD = 1;
4582         else
4583                 mr_request->tmReqFlags.isTMForLD = 1;
4584
4585         init_completion(&cmd_fusion->done);
4586         megasas_fire_cmd_fusion(instance, req_desc);
4587
4588         switch (type) {
4589         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4590                 timeout = mr_device_priv_data->task_abort_tmo;
4591                 break;
4592         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4593                 timeout = mr_device_priv_data->target_reset_tmo;
4594                 break;
4595         }
4596
4597         timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4598
4599         if (!timeleft) {
4600                 dev_err(&instance->pdev->dev,
4601                         "task mgmt type 0x%x timed out\n", type);
4602                 mutex_unlock(&instance->reset_mutex);
4603                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4604                 mutex_lock(&instance->reset_mutex);
4605                 return rc;
4606         }
4607
4608         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4609         megasas_tm_response_code(instance, mpi_reply);
4610
4611         megasas_return_cmd(instance, cmd_mfi);
4612         rc = SUCCESS;
4613         switch (type) {
4614         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4615                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4616
4617                 if (scsi_lookup->scmd == NULL)
4618                         break;
4619                 else {
4620                         instance->instancet->disable_intr(instance);
4621                         megasas_sync_irqs((unsigned long)instance);
4622                         instance->instancet->enable_intr(instance);
4623                         megasas_enable_irq_poll(instance);
4624                         if (scsi_lookup->scmd == NULL)
4625                                 break;
4626                 }
4627                 rc = FAILED;
4628                 break;
4629
4630         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4631                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4632                         break;
4633                 instance->instancet->disable_intr(instance);
4634                 megasas_sync_irqs((unsigned long)instance);
4635                 rc = megasas_track_scsiio(instance, id, channel);
4636                 instance->instancet->enable_intr(instance);
4637                 megasas_enable_irq_poll(instance);
4638
4639                 break;
4640         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4641         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4642                 break;
4643         default:
4644                 rc = FAILED;
4645                 break;
4646         }
4647
4648         return rc;
4649
4650 }
4651
4652 /*
4653  * megasas_fusion_smid_lookup : Look for fusion command corresponding to SCSI
4654  * @instance: per adapter struct
4655  *
4656  * Return Non Zero index, if SMID found in outstanding commands
4657  */
4658 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4659 {
4660         int i, ret = 0;
4661         struct megasas_instance *instance;
4662         struct megasas_cmd_fusion *cmd_fusion;
4663         struct fusion_context *fusion;
4664
4665         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4666
4667         fusion = instance->ctrl_context;
4668
4669         for (i = 0; i < instance->max_scsi_cmds; i++) {
4670                 cmd_fusion = fusion->cmd_list[i];
4671                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4672                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4673                                 " SMID: %d\n", cmd_fusion->index);
4674                         ret = cmd_fusion->index;
4675                         break;
4676                 }
4677         }
4678
4679         return ret;
4680 }
4681
4682 /*
4683 * megasas_get_tm_devhandle - Get devhandle for TM request
4684 * @sdev-                     OS provided scsi device
4685 *
4686 * Returns-                   devhandle/targetID of SCSI device
4687 */
4688 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4689 {
4690         u16 pd_index = 0;
4691         u32 device_id;
4692         struct megasas_instance *instance;
4693         struct fusion_context *fusion;
4694         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4695         u16 devhandle = (u16)ULONG_MAX;
4696
4697         instance = (struct megasas_instance *)sdev->host->hostdata;
4698         fusion = instance->ctrl_context;
4699
4700         if (!MEGASAS_IS_LOGICAL(sdev)) {
4701                 if (instance->use_seqnum_jbod_fp) {
4702                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4703                                     + sdev->id;
4704                         pd_sync = (void *)fusion->pd_seq_sync
4705                                         [(instance->pd_seq_map_id - 1) & 1];
4706                         devhandle = pd_sync->seq[pd_index].devHandle;
4707                 } else
4708                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4709                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4710         } else {
4711                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4712                                 + sdev->id;
4713                 devhandle = device_id;
4714         }
4715
4716         return devhandle;
4717 }
4718
4719 /*
4720  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4721  * @scmd : pointer to scsi command object
4722  *
4723  * Return SUCCESS, if command aborted else FAILED
4724  */
4725
4726 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4727 {
4728         struct megasas_instance *instance;
4729         u16 smid, devhandle;
4730         int ret;
4731         struct MR_PRIV_DEVICE *mr_device_priv_data;
4732         mr_device_priv_data = scmd->device->hostdata;
4733
4734         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4735
4736         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4737                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4738                 "SCSI host:%d\n", instance->host->host_no);
4739                 ret = FAILED;
4740                 return ret;
4741         }
4742
4743         if (!mr_device_priv_data) {
4744                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4745                         "scmd(%p)\n", scmd);
4746                 scmd->result = DID_NO_CONNECT << 16;
4747                 ret = SUCCESS;
4748                 goto out;
4749         }
4750
4751         if (!mr_device_priv_data->is_tm_capable) {
4752                 ret = FAILED;
4753                 goto out;
4754         }
4755
4756         mutex_lock(&instance->reset_mutex);
4757
4758         smid = megasas_fusion_smid_lookup(scmd);
4759
4760         if (!smid) {
4761                 ret = SUCCESS;
4762                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4763                         " issued is not found in outstanding commands\n");
4764                 mutex_unlock(&instance->reset_mutex);
4765                 goto out;
4766         }
4767
4768         devhandle = megasas_get_tm_devhandle(scmd->device);
4769
4770         if (devhandle == (u16)ULONG_MAX) {
4771                 ret = SUCCESS;
4772                 sdev_printk(KERN_INFO, scmd->device,
4773                         "task abort issued for invalid devhandle\n");
4774                 mutex_unlock(&instance->reset_mutex);
4775                 goto out;
4776         }
4777         sdev_printk(KERN_INFO, scmd->device,
4778                 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n",
4779                 scmd, devhandle);
4780
4781         mr_device_priv_data->tm_busy = true;
4782         ret = megasas_issue_tm(instance, devhandle,
4783                         scmd->device->channel, scmd->device->id, smid,
4784                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4785                         mr_device_priv_data);
4786         mr_device_priv_data->tm_busy = false;
4787
4788         mutex_unlock(&instance->reset_mutex);
4789         scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n",
4790                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4791 out:
4792         scsi_print_command(scmd);
4793         if (megasas_dbg_lvl & TM_DEBUG)
4794                 megasas_dump_fusion_io(scmd);
4795
4796         return ret;
4797 }
4798
4799 /*
4800  * megasas_reset_target_fusion : target reset function for fusion adapters
4801  * scmd: SCSI command pointer
4802  *
4803  * Returns SUCCESS if all commands associated with target aborted else FAILED
4804  */
4805
4806 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4807 {
4808
4809         struct megasas_instance *instance;
4810         int ret = FAILED;
4811         u16 devhandle;
4812         struct MR_PRIV_DEVICE *mr_device_priv_data;
4813         mr_device_priv_data = scmd->device->hostdata;
4814
4815         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4816
4817         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4818                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4819                 "SCSI host:%d\n", instance->host->host_no);
4820                 ret = FAILED;
4821                 return ret;
4822         }
4823
4824         if (!mr_device_priv_data) {
4825                 sdev_printk(KERN_INFO, scmd->device,
4826                             "device been deleted! scmd: (0x%p)\n", scmd);
4827                 scmd->result = DID_NO_CONNECT << 16;
4828                 ret = SUCCESS;
4829                 goto out;
4830         }
4831
4832         if (!mr_device_priv_data->is_tm_capable) {
4833                 ret = FAILED;
4834                 goto out;
4835         }
4836
4837         mutex_lock(&instance->reset_mutex);
4838         devhandle = megasas_get_tm_devhandle(scmd->device);
4839
4840         if (devhandle == (u16)ULONG_MAX) {
4841                 ret = SUCCESS;
4842                 sdev_printk(KERN_INFO, scmd->device,
4843                         "target reset issued for invalid devhandle\n");
4844                 mutex_unlock(&instance->reset_mutex);
4845                 goto out;
4846         }
4847
4848         sdev_printk(KERN_INFO, scmd->device,
4849                 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n",
4850                 scmd, devhandle);
4851         mr_device_priv_data->tm_busy = true;
4852         ret = megasas_issue_tm(instance, devhandle,
4853                         scmd->device->channel, scmd->device->id, 0,
4854                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4855                         mr_device_priv_data);
4856         mr_device_priv_data->tm_busy = false;
4857         mutex_unlock(&instance->reset_mutex);
4858         scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n",
4859                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4860
4861 out:
4862         return ret;
4863 }
4864
4865 /*SRIOV get other instance in cluster if any*/
4866 static struct
4867 megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4868 {
4869         int i;
4870
4871         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4872                 if (megasas_mgmt_info.instance[i] &&
4873                         (megasas_mgmt_info.instance[i] != instance) &&
4874                          megasas_mgmt_info.instance[i]->requestorId &&
4875                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4876                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4877                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4878                         return megasas_mgmt_info.instance[i];
4879         }
4880         return NULL;
4881 }
4882
4883 /* Check for a second path that is currently UP */
4884 int megasas_check_mpio_paths(struct megasas_instance *instance,
4885         struct scsi_cmnd *scmd)
4886 {
4887         struct megasas_instance *peer_instance = NULL;
4888         int retval = (DID_REQUEUE << 16);
4889
4890         if (instance->peerIsPresent) {
4891                 peer_instance = megasas_get_peer_instance(instance);
4892                 if ((peer_instance) &&
4893                         (atomic_read(&peer_instance->adprecovery) ==
4894                         MEGASAS_HBA_OPERATIONAL))
4895                         retval = (DID_NO_CONNECT << 16);
4896         }
4897         return retval;
4898 }
4899
4900 /* Core fusion reset function */
4901 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4902 {
4903         int retval = SUCCESS, i, j, convert = 0;
4904         struct megasas_instance *instance;
4905         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4906         struct fusion_context *fusion;
4907         u32 abs_state, status_reg, reset_adapter, fpio_count = 0;
4908         u32 io_timeout_in_crash_mode = 0;
4909         struct scsi_cmnd *scmd_local = NULL;
4910         struct scsi_device *sdev;
4911         int ret_target_prop = DCMD_FAILED;
4912         bool is_target_prop = false;
4913         bool do_adp_reset = true;
4914         int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES;
4915
4916         instance = (struct megasas_instance *)shost->hostdata;
4917         fusion = instance->ctrl_context;
4918
4919         mutex_lock(&instance->reset_mutex);
4920
4921         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4922                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4923                        "returning FAILED for scsi%d.\n",
4924                         instance->host->host_no);
4925                 mutex_unlock(&instance->reset_mutex);
4926                 return FAILED;
4927         }
4928         status_reg = instance->instancet->read_fw_status_reg(instance);
4929         abs_state = status_reg & MFI_STATE_MASK;
4930
4931         /* IO timeout detected, forcibly put FW in FAULT state */
4932         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4933                 instance->crash_dump_app_support && reason) {
4934                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4935                         "forcibly FAULT Firmware\n");
4936                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4937                 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4938                 writel(status_reg | MFI_STATE_FORCE_OCR,
4939                         &instance->reg_set->doorbell);
4940                 readl(&instance->reg_set->doorbell);
4941                 mutex_unlock(&instance->reset_mutex);
4942                 do {
4943                         ssleep(3);
4944                         io_timeout_in_crash_mode++;
4945                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4946                                 "seconds for crash dump collection and OCR "
4947                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4948                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4949                         (io_timeout_in_crash_mode < 80));
4950
4951                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4952                         dev_info(&instance->pdev->dev, "OCR done for IO "
4953                                 "timeout case\n");
4954                         retval = SUCCESS;
4955                 } else {
4956                         dev_info(&instance->pdev->dev, "Controller is not "
4957                                 "operational after 240 seconds wait for IO "
4958                                 "timeout case in FW crash dump mode\n do "
4959                                 "OCR/kill adapter\n");
4960                         retval = megasas_reset_fusion(shost, 0);
4961                 }
4962                 return retval;
4963         }
4964
4965         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4966                 del_timer_sync(&instance->sriov_heartbeat_timer);
4967         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4968         set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
4969         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4970         instance->instancet->disable_intr(instance);
4971         megasas_sync_irqs((unsigned long)instance);
4972
4973         /* First try waiting for commands to complete */
4974         if (megasas_wait_for_outstanding_fusion(instance, reason,
4975                                                 &convert)) {
4976                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4977                 dev_warn(&instance->pdev->dev, "resetting fusion "
4978                        "adapter scsi%d.\n", instance->host->host_no);
4979                 if (convert)
4980                         reason = 0;
4981
4982                 if (megasas_dbg_lvl & OCR_DEBUG)
4983                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4984
4985                 /* Now return commands back to the OS */
4986                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4987                         cmd_fusion = fusion->cmd_list[i];
4988                         /*check for extra commands issued by driver*/
4989                         if (instance->adapter_type >= VENTURA_SERIES) {
4990                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4991                                 megasas_return_cmd_fusion(instance, r1_cmd);
4992                         }
4993                         scmd_local = cmd_fusion->scmd;
4994                         if (cmd_fusion->scmd) {
4995                                 if (megasas_dbg_lvl & OCR_DEBUG) {
4996                                         sdev_printk(KERN_INFO,
4997                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4998                                                 cmd_fusion->index);
4999                                         megasas_dump_fusion_io(cmd_fusion->scmd);
5000                                 }
5001
5002                                 if (cmd_fusion->io_request->Function ==
5003                                         MPI2_FUNCTION_SCSI_IO_REQUEST)
5004                                         fpio_count++;
5005
5006                                 scmd_local->result =
5007                                         megasas_check_mpio_paths(instance,
5008                                                         scmd_local);
5009                                 if (instance->ldio_threshold &&
5010                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
5011                                         atomic_dec(&instance->ldio_outstanding);
5012                                 megasas_return_cmd_fusion(instance, cmd_fusion);
5013                                 scsi_dma_unmap(scmd_local);
5014                                 scsi_done(scmd_local);
5015                         }
5016                 }
5017
5018                 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n",
5019                         fpio_count);
5020
5021                 atomic_set(&instance->fw_outstanding, 0);
5022
5023                 status_reg = instance->instancet->read_fw_status_reg(instance);
5024                 abs_state = status_reg & MFI_STATE_MASK;
5025                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
5026                 if (instance->disableOnlineCtrlReset ||
5027                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
5028                         /* Reset not supported, kill adapter */
5029                         dev_warn(&instance->pdev->dev, "Reset not supported"
5030                                ", killing adapter scsi%d.\n",
5031                                 instance->host->host_no);
5032                         goto kill_hba;
5033                 }
5034
5035                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
5036                 if (instance->requestorId && !reason) {
5037                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
5038                         do_adp_reset = false;
5039                         max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF;
5040                 }
5041
5042                 /* Now try to reset the chip */
5043                 for (i = 0; i < max_reset_tries; i++) {
5044                         /*
5045                          * Do adp reset and wait for
5046                          * controller to transition to ready
5047                          */
5048                         if (megasas_adp_reset_wait_for_ready(instance,
5049                                 do_adp_reset, 1) == FAILED)
5050                                 continue;
5051
5052                         /* Wait for FW to become ready */
5053                         if (megasas_transition_to_ready(instance, 1)) {
5054                                 dev_warn(&instance->pdev->dev,
5055                                         "Failed to transition controller to ready for "
5056                                         "scsi%d.\n", instance->host->host_no);
5057                                 continue;
5058                         }
5059                         megasas_reset_reply_desc(instance);
5060                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
5061
5062                         if (megasas_ioc_init_fusion(instance)) {
5063                                 continue;
5064                         }
5065
5066                         if (megasas_get_ctrl_info(instance)) {
5067                                 dev_info(&instance->pdev->dev,
5068                                         "Failed from %s %d\n",
5069                                         __func__, __LINE__);
5070                                 goto kill_hba;
5071                         }
5072
5073                         megasas_refire_mgmt_cmd(instance,
5074                                                 (i == (MEGASAS_FUSION_MAX_RESET_TRIES - 1)
5075                                                         ? 1 : 0));
5076
5077                         /* Reset load balance info */
5078                         if (fusion->load_balance_info)
5079                                 memset(fusion->load_balance_info, 0,
5080                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
5081                                        MAX_LOGICAL_DRIVES_EXT));
5082
5083                         if (!megasas_get_map_info(instance)) {
5084                                 megasas_sync_map_info(instance);
5085                         } else {
5086                                 /*
5087                                  * Return pending polled mode cmds before
5088                                  * retrying OCR
5089                                  */
5090                                 megasas_return_polled_cmds(instance);
5091                                 continue;
5092                         }
5093
5094                         megasas_setup_jbod_map(instance);
5095
5096                         /* reset stream detection array */
5097                         if (instance->adapter_type >= VENTURA_SERIES) {
5098                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
5099                                         memset(fusion->stream_detect_by_ld[j],
5100                                                0, sizeof(struct LD_STREAM_DETECT));
5101                                         fusion->stream_detect_by_ld[j]->mru_bit_map
5102                                                 = MR_STREAM_BITMAP;
5103                                 }
5104                         }
5105
5106                         clear_bit(MEGASAS_FUSION_IN_RESET,
5107                                   &instance->reset_flags);
5108                         instance->instancet->enable_intr(instance);
5109                         megasas_enable_irq_poll(instance);
5110                         shost_for_each_device(sdev, shost) {
5111                                 if ((instance->tgt_prop) &&
5112                                     (instance->nvme_page_size))
5113                                         ret_target_prop = megasas_get_target_prop(instance, sdev);
5114
5115                                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
5116                                 megasas_set_dynamic_target_properties(sdev, is_target_prop);
5117                         }
5118
5119                         status_reg = instance->instancet->read_fw_status_reg
5120                                         (instance);
5121                         abs_state = status_reg & MFI_STATE_MASK;
5122                         if (abs_state != MFI_STATE_OPERATIONAL) {
5123                                 dev_info(&instance->pdev->dev,
5124                                          "Adapter is not OPERATIONAL, state 0x%x for scsi:%d\n",
5125                                          abs_state, instance->host->host_no);
5126                                 goto out;
5127                         }
5128                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5129
5130                         dev_info(&instance->pdev->dev,
5131                                  "Adapter is OPERATIONAL for scsi:%d\n",
5132                                  instance->host->host_no);
5133
5134                         /* Restart SR-IOV heartbeat */
5135                         if (instance->requestorId) {
5136                                 if (!megasas_sriov_start_heartbeat(instance, 0))
5137                                         megasas_start_timer(instance);
5138                                 else
5139                                         instance->skip_heartbeat_timer_del = 1;
5140                         }
5141
5142                         if (instance->crash_dump_drv_support &&
5143                                 instance->crash_dump_app_support)
5144                                 megasas_set_crash_dump_params(instance,
5145                                         MR_CRASH_BUF_TURN_ON);
5146                         else
5147                                 megasas_set_crash_dump_params(instance,
5148                                         MR_CRASH_BUF_TURN_OFF);
5149
5150                         if (instance->snapdump_wait_time) {
5151                                 megasas_get_snapdump_properties(instance);
5152                                 dev_info(&instance->pdev->dev,
5153                                          "Snap dump wait time\t: %d\n",
5154                                          instance->snapdump_wait_time);
5155                         }
5156
5157                         retval = SUCCESS;
5158
5159                         /* Adapter reset completed successfully */
5160                         dev_warn(&instance->pdev->dev,
5161                                  "Reset successful for scsi%d.\n",
5162                                  instance->host->host_no);
5163
5164                         goto out;
5165                 }
5166                 /* Reset failed, kill the adapter */
5167                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
5168                        "adapter scsi%d.\n", instance->host->host_no);
5169                 goto kill_hba;
5170         } else {
5171                 /* For VF: Restart HB timer if we didn't OCR */
5172                 if (instance->requestorId) {
5173                         megasas_start_timer(instance);
5174                 }
5175                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5176                 instance->instancet->enable_intr(instance);
5177                 megasas_enable_irq_poll(instance);
5178                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5179                 goto out;
5180         }
5181 kill_hba:
5182         megaraid_sas_kill_hba(instance);
5183         megasas_enable_irq_poll(instance);
5184         instance->skip_heartbeat_timer_del = 1;
5185         retval = FAILED;
5186 out:
5187         clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
5188         mutex_unlock(&instance->reset_mutex);
5189         return retval;
5190 }
5191
5192 /* Fusion Crash dump collection */
5193 static void  megasas_fusion_crash_dump(struct megasas_instance *instance)
5194 {
5195         u32 status_reg;
5196         u8 partial_copy = 0;
5197         int wait = 0;
5198
5199
5200         status_reg = instance->instancet->read_fw_status_reg(instance);
5201
5202         /*
5203          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
5204          * to host crash buffers
5205          */
5206         if (instance->drv_buf_index == 0) {
5207                 /* Buffer is already allocated for old Crash dump.
5208                  * Do OCR and do not wait for crash dump collection
5209                  */
5210                 if (instance->drv_buf_alloc) {
5211                         dev_info(&instance->pdev->dev, "earlier crash dump is "
5212                                 "not yet copied by application, ignoring this "
5213                                 "crash dump and initiating OCR\n");
5214                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5215                         writel(status_reg,
5216                                 &instance->reg_set->outbound_scratch_pad_0);
5217                         readl(&instance->reg_set->outbound_scratch_pad_0);
5218                         return;
5219                 }
5220                 megasas_alloc_host_crash_buffer(instance);
5221                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
5222                         "allocated: %d\n", instance->drv_buf_alloc);
5223         }
5224
5225         while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
5226                (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
5227                 if (!(status_reg & MFI_STATE_DMADONE)) {
5228                         /*
5229                          * Next crash dump buffer is not yet DMA'd by FW
5230                          * Check after 10ms. Wait for 1 second for FW to
5231                          * post the next buffer. If not bail out.
5232                          */
5233                         wait++;
5234                         msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5235                         status_reg = instance->instancet->read_fw_status_reg(
5236                                         instance);
5237                         continue;
5238                 }
5239
5240                 wait = 0;
5241                 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
5242                         dev_info(&instance->pdev->dev,
5243                                  "Driver is done copying the buffer: %d\n",
5244                                  instance->drv_buf_alloc);
5245                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5246                         partial_copy = 1;
5247                         break;
5248                 } else {
5249                         memcpy(instance->crash_buf[instance->drv_buf_index],
5250                                instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
5251                         instance->drv_buf_index++;
5252                         status_reg &= ~MFI_STATE_DMADONE;
5253                 }
5254
5255                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5256                 readl(&instance->reg_set->outbound_scratch_pad_0);
5257
5258                 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5259                 status_reg = instance->instancet->read_fw_status_reg(instance);
5260         }
5261
5262         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
5263                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
5264                         "of copied buffers: %d\n", instance->drv_buf_index);
5265                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
5266                 instance->fw_crash_state = AVAILABLE;
5267                 instance->drv_buf_index = 0;
5268                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5269                 readl(&instance->reg_set->outbound_scratch_pad_0);
5270                 if (!partial_copy)
5271                         megasas_reset_fusion(instance->host, 0);
5272         }
5273 }
5274
5275
5276 /* Fusion OCR work queue */
5277 void megasas_fusion_ocr_wq(struct work_struct *work)
5278 {
5279         struct megasas_instance *instance =
5280                 container_of(work, struct megasas_instance, work_init);
5281
5282         megasas_reset_fusion(instance->host, 0);
5283 }
5284
5285 /* Allocate fusion context */
5286 int
5287 megasas_alloc_fusion_context(struct megasas_instance *instance)
5288 {
5289         struct fusion_context *fusion;
5290
5291         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
5292                                          GFP_KERNEL);
5293         if (!instance->ctrl_context) {
5294                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5295                         __func__, __LINE__);
5296                 return -ENOMEM;
5297         }
5298
5299         fusion = instance->ctrl_context;
5300
5301         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5302                                               sizeof(LD_SPAN_INFO));
5303         fusion->log_to_span =
5304                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5305                                                 fusion->log_to_span_pages);
5306         if (!fusion->log_to_span) {
5307                 fusion->log_to_span =
5308                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5309                                            sizeof(LD_SPAN_INFO)));
5310                 if (!fusion->log_to_span) {
5311                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5312                                 __func__, __LINE__);
5313                         return -ENOMEM;
5314                 }
5315         }
5316
5317         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5318                 sizeof(struct LD_LOAD_BALANCE_INFO));
5319         fusion->load_balance_info =
5320                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5321                 fusion->load_balance_info_pages);
5322         if (!fusion->load_balance_info) {
5323                 fusion->load_balance_info =
5324                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5325                                            sizeof(struct LD_LOAD_BALANCE_INFO)));
5326                 if (!fusion->load_balance_info)
5327                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
5328                                 "continuing without Load Balance support\n");
5329         }
5330
5331         return 0;
5332 }
5333
5334 void
5335 megasas_free_fusion_context(struct megasas_instance *instance)
5336 {
5337         struct fusion_context *fusion = instance->ctrl_context;
5338
5339         if (fusion) {
5340                 if (fusion->load_balance_info) {
5341                         if (is_vmalloc_addr(fusion->load_balance_info))
5342                                 vfree(fusion->load_balance_info);
5343                         else
5344                                 free_pages((ulong)fusion->load_balance_info,
5345                                         fusion->load_balance_info_pages);
5346                 }
5347
5348                 if (fusion->log_to_span) {
5349                         if (is_vmalloc_addr(fusion->log_to_span))
5350                                 vfree(fusion->log_to_span);
5351                         else
5352                                 free_pages((ulong)fusion->log_to_span,
5353                                            fusion->log_to_span_pages);
5354                 }
5355
5356                 kfree(fusion);
5357         }
5358 }
5359
5360 struct megasas_instance_template megasas_instance_template_fusion = {
5361         .enable_intr = megasas_enable_intr_fusion,
5362         .disable_intr = megasas_disable_intr_fusion,
5363         .clear_intr = megasas_clear_intr_fusion,
5364         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
5365         .adp_reset = megasas_adp_reset_fusion,
5366         .check_reset = megasas_check_reset_fusion,
5367         .service_isr = megasas_isr_fusion,
5368         .tasklet = megasas_complete_cmd_dpc_fusion,
5369         .init_adapter = megasas_init_adapter_fusion,
5370         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5371         .issue_dcmd = megasas_issue_dcmd_fusion,
5372 };
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