]> Git Repo - J-linux.git/blob - drivers/scsi/fnic/fnic_res.c
Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / drivers / scsi / fnic / fnic_res.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
5  */
6 #include <linux/errno.h>
7 #include <linux/types.h>
8 #include <linux/pci.h>
9 #include "wq_enet_desc.h"
10 #include "rq_enet_desc.h"
11 #include "cq_enet_desc.h"
12 #include "vnic_resource.h"
13 #include "vnic_dev.h"
14 #include "vnic_wq.h"
15 #include "vnic_rq.h"
16 #include "vnic_cq.h"
17 #include "vnic_intr.h"
18 #include "vnic_stats.h"
19 #include "vnic_nic.h"
20 #include "fnic.h"
21
22 int fnic_get_vnic_config(struct fnic *fnic)
23 {
24         struct vnic_fc_config *c = &fnic->config;
25         int err;
26
27 #define GET_CONFIG(m) \
28         do { \
29                 err = vnic_dev_spec(fnic->vdev, \
30                                     offsetof(struct vnic_fc_config, m), \
31                                     sizeof(c->m), &c->m); \
32                 if (err) { \
33                         shost_printk(KERN_ERR, fnic->lport->host, \
34                                      "Error getting %s, %d\n", #m, \
35                                      err); \
36                         return err; \
37                 } \
38         } while (0);
39
40         GET_CONFIG(node_wwn);
41         GET_CONFIG(port_wwn);
42         GET_CONFIG(wq_enet_desc_count);
43         GET_CONFIG(wq_copy_desc_count);
44         GET_CONFIG(rq_desc_count);
45         GET_CONFIG(maxdatafieldsize);
46         GET_CONFIG(ed_tov);
47         GET_CONFIG(ra_tov);
48         GET_CONFIG(intr_timer);
49         GET_CONFIG(intr_timer_type);
50         GET_CONFIG(flags);
51         GET_CONFIG(flogi_retries);
52         GET_CONFIG(flogi_timeout);
53         GET_CONFIG(plogi_retries);
54         GET_CONFIG(plogi_timeout);
55         GET_CONFIG(io_throttle_count);
56         GET_CONFIG(link_down_timeout);
57         GET_CONFIG(port_down_timeout);
58         GET_CONFIG(port_down_io_retries);
59         GET_CONFIG(luns_per_tgt);
60         GET_CONFIG(intr_mode);
61         GET_CONFIG(wq_copy_count);
62
63         c->wq_enet_desc_count =
64                 min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
65                       max_t(u32, VNIC_FNIC_WQ_DESCS_MIN,
66                             c->wq_enet_desc_count));
67         c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);
68
69         c->wq_copy_desc_count =
70                 min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX,
71                       max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN,
72                             c->wq_copy_desc_count));
73         c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16);
74
75         c->rq_desc_count =
76                 min_t(u32, VNIC_FNIC_RQ_DESCS_MAX,
77                       max_t(u32, VNIC_FNIC_RQ_DESCS_MIN,
78                             c->rq_desc_count));
79         c->rq_desc_count = ALIGN(c->rq_desc_count, 16);
80
81         c->maxdatafieldsize =
82                 min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX,
83                       max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN,
84                             c->maxdatafieldsize));
85         c->ed_tov =
86                 min_t(u32, VNIC_FNIC_EDTOV_MAX,
87                       max_t(u32, VNIC_FNIC_EDTOV_MIN,
88                             c->ed_tov));
89
90         c->ra_tov =
91                 min_t(u32, VNIC_FNIC_RATOV_MAX,
92                       max_t(u32, VNIC_FNIC_RATOV_MIN,
93                             c->ra_tov));
94
95         c->flogi_retries =
96                 min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries);
97
98         c->flogi_timeout =
99                 min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX,
100                       max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN,
101                             c->flogi_timeout));
102
103         c->plogi_retries =
104                 min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries);
105
106         c->plogi_timeout =
107                 min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX,
108                       max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN,
109                             c->plogi_timeout));
110
111         c->io_throttle_count =
112                 min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX,
113                       max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN,
114                             c->io_throttle_count));
115
116         c->link_down_timeout =
117                 min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX,
118                       c->link_down_timeout);
119
120         c->port_down_timeout =
121                 min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX,
122                       c->port_down_timeout);
123
124         c->port_down_io_retries =
125                 min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX,
126                       c->port_down_io_retries);
127
128         c->luns_per_tgt =
129                 min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX,
130                       max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN,
131                             c->luns_per_tgt));
132
133         c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
134         c->intr_timer_type = c->intr_timer_type;
135
136         /* for older firmware, GET_CONFIG will not return anything */
137         if (c->wq_copy_count == 0)
138                 c->wq_copy_count = 1;
139
140         c->wq_copy_count = min_t(u16, FNIC_WQ_COPY_MAX, c->wq_copy_count);
141
142         shost_printk(KERN_INFO, fnic->lport->host,
143                      "vNIC MAC addr %pM "
144                      "wq/wq_copy/rq %d/%d/%d\n",
145                      fnic->ctlr.ctl_src_addr,
146                      c->wq_enet_desc_count, c->wq_copy_desc_count,
147                      c->rq_desc_count);
148         shost_printk(KERN_INFO, fnic->lport->host,
149                      "vNIC node wwn %llx port wwn %llx\n",
150                      c->node_wwn, c->port_wwn);
151         shost_printk(KERN_INFO, fnic->lport->host,
152                      "vNIC ed_tov %d ra_tov %d\n",
153                      c->ed_tov, c->ra_tov);
154         shost_printk(KERN_INFO, fnic->lport->host,
155                      "vNIC mtu %d intr timer %d\n",
156                      c->maxdatafieldsize, c->intr_timer);
157         shost_printk(KERN_INFO, fnic->lport->host,
158                      "vNIC flags 0x%x luns per tgt %d\n",
159                      c->flags, c->luns_per_tgt);
160         shost_printk(KERN_INFO, fnic->lport->host,
161                      "vNIC flogi_retries %d flogi timeout %d\n",
162                      c->flogi_retries, c->flogi_timeout);
163         shost_printk(KERN_INFO, fnic->lport->host,
164                      "vNIC plogi retries %d plogi timeout %d\n",
165                      c->plogi_retries, c->plogi_timeout);
166         shost_printk(KERN_INFO, fnic->lport->host,
167                      "vNIC io throttle count %d link dn timeout %d\n",
168                      c->io_throttle_count, c->link_down_timeout);
169         shost_printk(KERN_INFO, fnic->lport->host,
170                      "vNIC port dn io retries %d port dn timeout %d\n",
171                      c->port_down_io_retries, c->port_down_timeout);
172         shost_printk(KERN_INFO, fnic->lport->host,
173                         "vNIC wq_copy_count: %d\n", c->wq_copy_count);
174         shost_printk(KERN_INFO, fnic->lport->host,
175                         "vNIC intr mode: %d\n", c->intr_mode);
176
177         return 0;
178 }
179
180 int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
181                         u8 rss_hash_type,
182                         u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable,
183                         u8 tso_ipid_split_en, u8 ig_vlan_strip_en)
184 {
185         u64 a0, a1;
186         u32 nic_cfg;
187         int wait = 1000;
188
189         vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
190                 rss_hash_type, rss_hash_bits, rss_base_cpu,
191                 rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
192
193         a0 = nic_cfg;
194         a1 = 0;
195
196         return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
197 }
198
199 void fnic_get_res_counts(struct fnic *fnic)
200 {
201         fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
202         fnic->raw_wq_count = 1;
203         fnic->wq_copy_count = fnic->config.wq_copy_count;
204         fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
205         fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
206         fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
207                 RES_TYPE_INTR_CTRL);
208
209         shost_printk(KERN_INFO, fnic->lport->host,
210                 "vNIC fw resources wq_count: %d\n", fnic->wq_count);
211         shost_printk(KERN_INFO, fnic->lport->host,
212                 "vNIC fw resources raw_wq_count: %d\n", fnic->raw_wq_count);
213         shost_printk(KERN_INFO, fnic->lport->host,
214                 "vNIC fw resources wq_copy_count: %d\n", fnic->wq_copy_count);
215         shost_printk(KERN_INFO, fnic->lport->host,
216                 "vNIC fw resources rq_count: %d\n", fnic->rq_count);
217         shost_printk(KERN_INFO, fnic->lport->host,
218                 "vNIC fw resources cq_count: %d\n", fnic->cq_count);
219         shost_printk(KERN_INFO, fnic->lport->host,
220                 "vNIC fw resources intr_count: %d\n", fnic->intr_count);
221 }
222
223 void fnic_free_vnic_resources(struct fnic *fnic)
224 {
225         unsigned int i;
226
227         for (i = 0; i < fnic->raw_wq_count; i++)
228                 vnic_wq_free(&fnic->wq[i]);
229
230         for (i = 0; i < fnic->wq_copy_count; i++)
231                 vnic_wq_copy_free(&fnic->hw_copy_wq[i]);
232
233         for (i = 0; i < fnic->rq_count; i++)
234                 vnic_rq_free(&fnic->rq[i]);
235
236         for (i = 0; i < fnic->cq_count; i++)
237                 vnic_cq_free(&fnic->cq[i]);
238
239         for (i = 0; i < fnic->intr_count; i++)
240                 vnic_intr_free(&fnic->intr[i]);
241 }
242
243 int fnic_alloc_vnic_resources(struct fnic *fnic)
244 {
245         enum vnic_dev_intr_mode intr_mode;
246         unsigned int mask_on_assertion;
247         unsigned int interrupt_offset;
248         unsigned int error_interrupt_enable;
249         unsigned int error_interrupt_offset;
250         unsigned int i, cq_index;
251         unsigned int wq_copy_cq_desc_count;
252         int err;
253
254         intr_mode = vnic_dev_get_intr_mode(fnic->vdev);
255
256         shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n",
257                      intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
258                      intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
259                      intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
260                      "MSI-X" : "unknown");
261
262         shost_printk(KERN_INFO, fnic->lport->host,
263                         "vNIC resources avail: wq %d cp_wq %d raw_wq %d rq %d",
264                         fnic->wq_count, fnic->wq_copy_count,
265                         fnic->raw_wq_count, fnic->rq_count);
266
267         shost_printk(KERN_INFO, fnic->lport->host,
268                         "vNIC resources avail: cq %d intr %d cpy-wq desc count %d\n",
269                         fnic->cq_count, fnic->intr_count,
270                         fnic->config.wq_copy_desc_count);
271
272         /* Allocate Raw WQ used for FCS frames */
273         for (i = 0; i < fnic->raw_wq_count; i++) {
274                 err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i,
275                         fnic->config.wq_enet_desc_count,
276                         sizeof(struct wq_enet_desc));
277                 if (err)
278                         goto err_out_cleanup;
279         }
280
281         /* Allocate Copy WQs used for SCSI IOs */
282         for (i = 0; i < fnic->wq_copy_count; i++) {
283                 err = vnic_wq_copy_alloc(fnic->vdev, &fnic->hw_copy_wq[i],
284                         (fnic->raw_wq_count + i),
285                         fnic->config.wq_copy_desc_count,
286                         sizeof(struct fcpio_host_req));
287                 if (err)
288                         goto err_out_cleanup;
289         }
290
291         /* RQ for receiving FCS frames */
292         for (i = 0; i < fnic->rq_count; i++) {
293                 err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i,
294                         fnic->config.rq_desc_count,
295                         sizeof(struct rq_enet_desc));
296                 if (err)
297                         goto err_out_cleanup;
298         }
299
300         /* CQ for each RQ */
301         for (i = 0; i < fnic->rq_count; i++) {
302                 cq_index = i;
303                 err = vnic_cq_alloc(fnic->vdev,
304                         &fnic->cq[cq_index], cq_index,
305                         fnic->config.rq_desc_count,
306                         sizeof(struct cq_enet_rq_desc));
307                 if (err)
308                         goto err_out_cleanup;
309         }
310
311         /* CQ for each WQ */
312         for (i = 0; i < fnic->raw_wq_count; i++) {
313                 cq_index = fnic->rq_count + i;
314                 err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index,
315                         fnic->config.wq_enet_desc_count,
316                         sizeof(struct cq_enet_wq_desc));
317                 if (err)
318                         goto err_out_cleanup;
319         }
320
321         /* CQ for each COPY WQ */
322         wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3);
323         for (i = 0; i < fnic->wq_copy_count; i++) {
324                 cq_index = fnic->raw_wq_count + fnic->rq_count + i;
325                 err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index],
326                         cq_index,
327                         wq_copy_cq_desc_count,
328                         sizeof(struct fcpio_fw_req));
329                 if (err)
330                         goto err_out_cleanup;
331         }
332
333         for (i = 0; i < fnic->intr_count; i++) {
334                 err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i);
335                 if (err)
336                         goto err_out_cleanup;
337         }
338
339         fnic->legacy_pba = vnic_dev_get_res(fnic->vdev,
340                                 RES_TYPE_INTR_PBA_LEGACY, 0);
341
342         if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
343                 shost_printk(KERN_ERR, fnic->lport->host,
344                              "Failed to hook legacy pba resource\n");
345                 err = -ENODEV;
346                 goto err_out_cleanup;
347         }
348
349         /*
350          * Init RQ/WQ resources.
351          *
352          * RQ[0 to n-1] point to CQ[0 to n-1]
353          * WQ[0 to m-1] point to CQ[n to n+m-1]
354          * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1]
355          *
356          * Note for copy wq we always initialize with cq_index = 0
357          *
358          * Error interrupt is not enabled for MSI.
359          */
360
361         switch (intr_mode) {
362         case VNIC_DEV_INTR_MODE_INTX:
363         case VNIC_DEV_INTR_MODE_MSIX:
364                 error_interrupt_enable = 1;
365                 error_interrupt_offset = fnic->err_intr_offset;
366                 break;
367         default:
368                 error_interrupt_enable = 0;
369                 error_interrupt_offset = 0;
370                 break;
371         }
372
373         for (i = 0; i < fnic->rq_count; i++) {
374                 cq_index = i;
375                 vnic_rq_init(&fnic->rq[i],
376                              cq_index,
377                              error_interrupt_enable,
378                              error_interrupt_offset);
379         }
380
381         for (i = 0; i < fnic->raw_wq_count; i++) {
382                 cq_index = i + fnic->rq_count;
383                 vnic_wq_init(&fnic->wq[i],
384                              cq_index,
385                              error_interrupt_enable,
386                              error_interrupt_offset);
387         }
388
389         for (i = 0; i < fnic->wq_copy_count; i++) {
390                 vnic_wq_copy_init(&fnic->hw_copy_wq[i],
391                                   0 /* cq_index 0 - always */,
392                                   error_interrupt_enable,
393                                   error_interrupt_offset);
394         }
395
396         for (i = 0; i < fnic->cq_count; i++) {
397
398                 switch (intr_mode) {
399                 case VNIC_DEV_INTR_MODE_MSIX:
400                         interrupt_offset = i;
401                         break;
402                 default:
403                         interrupt_offset = 0;
404                         break;
405                 }
406
407                 vnic_cq_init(&fnic->cq[i],
408                         0 /* flow_control_enable */,
409                         1 /* color_enable */,
410                         0 /* cq_head */,
411                         0 /* cq_tail */,
412                         1 /* cq_tail_color */,
413                         1 /* interrupt_enable */,
414                         1 /* cq_entry_enable */,
415                         0 /* cq_message_enable */,
416                         interrupt_offset,
417                         0 /* cq_message_addr */);
418         }
419
420         /*
421          * Init INTR resources
422          *
423          * mask_on_assertion is not used for INTx due to the level-
424          * triggered nature of INTx
425          */
426
427         switch (intr_mode) {
428         case VNIC_DEV_INTR_MODE_MSI:
429         case VNIC_DEV_INTR_MODE_MSIX:
430                 mask_on_assertion = 1;
431                 break;
432         default:
433                 mask_on_assertion = 0;
434                 break;
435         }
436
437         for (i = 0; i < fnic->intr_count; i++) {
438                 vnic_intr_init(&fnic->intr[i],
439                         fnic->config.intr_timer,
440                         fnic->config.intr_timer_type,
441                         mask_on_assertion);
442         }
443
444         /* init the stats memory by making the first call here */
445         err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
446         if (err) {
447                 shost_printk(KERN_ERR, fnic->lport->host,
448                              "vnic_dev_stats_dump failed - x%x\n", err);
449                 goto err_out_cleanup;
450         }
451
452         /* Clear LIF stats */
453         vnic_dev_stats_clear(fnic->vdev);
454
455         return 0;
456
457 err_out_cleanup:
458         fnic_free_vnic_resources(fnic);
459
460         return err;
461 }
This page took 0.055997 seconds and 4 git commands to generate.