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path: root/drivers/scsi/fnic/fnic_res.c
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Diffstat (limited to 'drivers/scsi/fnic/fnic_res.c')
-rw-r--r--drivers/scsi/fnic/fnic_res.c444
1 files changed, 444 insertions, 0 deletions
diff --git a/drivers/scsi/fnic/fnic_res.c b/drivers/scsi/fnic/fnic_res.c
new file mode 100644
index 000000000000..7ba61ec715d2
--- /dev/null
+++ b/drivers/scsi/fnic/fnic_res.c
@@ -0,0 +1,444 @@
1/*
2 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
4 *
5 * This program is free software; you may redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
16 * SOFTWARE.
17 */
18#include <linux/errno.h>
19#include <linux/types.h>
20#include <linux/pci.h>
21#include "wq_enet_desc.h"
22#include "rq_enet_desc.h"
23#include "cq_enet_desc.h"
24#include "vnic_resource.h"
25#include "vnic_dev.h"
26#include "vnic_wq.h"
27#include "vnic_rq.h"
28#include "vnic_cq.h"
29#include "vnic_intr.h"
30#include "vnic_stats.h"
31#include "vnic_nic.h"
32#include "fnic.h"
33
34int fnic_get_vnic_config(struct fnic *fnic)
35{
36 struct vnic_fc_config *c = &fnic->config;
37 int err;
38
39#define GET_CONFIG(m) \
40 do { \
41 err = vnic_dev_spec(fnic->vdev, \
42 offsetof(struct vnic_fc_config, m), \
43 sizeof(c->m), &c->m); \
44 if (err) { \
45 shost_printk(KERN_ERR, fnic->lport->host, \
46 "Error getting %s, %d\n", #m, \
47 err); \
48 return err; \
49 } \
50 } while (0);
51
52 GET_CONFIG(node_wwn);
53 GET_CONFIG(port_wwn);
54 GET_CONFIG(wq_enet_desc_count);
55 GET_CONFIG(wq_copy_desc_count);
56 GET_CONFIG(rq_desc_count);
57 GET_CONFIG(maxdatafieldsize);
58 GET_CONFIG(ed_tov);
59 GET_CONFIG(ra_tov);
60 GET_CONFIG(intr_timer);
61 GET_CONFIG(intr_timer_type);
62 GET_CONFIG(flags);
63 GET_CONFIG(flogi_retries);
64 GET_CONFIG(flogi_timeout);
65 GET_CONFIG(plogi_retries);
66 GET_CONFIG(plogi_timeout);
67 GET_CONFIG(io_throttle_count);
68 GET_CONFIG(link_down_timeout);
69 GET_CONFIG(port_down_timeout);
70 GET_CONFIG(port_down_io_retries);
71 GET_CONFIG(luns_per_tgt);
72
73 c->wq_enet_desc_count =
74 min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
75 max_t(u32, VNIC_FNIC_WQ_DESCS_MIN,
76 c->wq_enet_desc_count));
77 c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);
78
79 c->wq_copy_desc_count =
80 min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX,
81 max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN,
82 c->wq_copy_desc_count));
83 c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16);
84
85 c->rq_desc_count =
86 min_t(u32, VNIC_FNIC_RQ_DESCS_MAX,
87 max_t(u32, VNIC_FNIC_RQ_DESCS_MIN,
88 c->rq_desc_count));
89 c->rq_desc_count = ALIGN(c->rq_desc_count, 16);
90
91 c->maxdatafieldsize =
92 min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX,
93 max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN,
94 c->maxdatafieldsize));
95 c->ed_tov =
96 min_t(u32, VNIC_FNIC_EDTOV_MAX,
97 max_t(u32, VNIC_FNIC_EDTOV_MIN,
98 c->ed_tov));
99
100 c->ra_tov =
101 min_t(u32, VNIC_FNIC_RATOV_MAX,
102 max_t(u32, VNIC_FNIC_RATOV_MIN,
103 c->ra_tov));
104
105 c->flogi_retries =
106 min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries);
107
108 c->flogi_timeout =
109 min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX,
110 max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN,
111 c->flogi_timeout));
112
113 c->plogi_retries =
114 min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries);
115
116 c->plogi_timeout =
117 min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX,
118 max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN,
119 c->plogi_timeout));
120
121 c->io_throttle_count =
122 min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX,
123 max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN,
124 c->io_throttle_count));
125
126 c->link_down_timeout =
127 min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX,
128 c->link_down_timeout);
129
130 c->port_down_timeout =
131 min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX,
132 c->port_down_timeout);
133
134 c->port_down_io_retries =
135 min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX,
136 c->port_down_io_retries);
137
138 c->luns_per_tgt =
139 min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX,
140 max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN,
141 c->luns_per_tgt));
142
143 c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
144 c->intr_timer_type = c->intr_timer_type;
145
146 shost_printk(KERN_INFO, fnic->lport->host,
147 "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
148 "wq/wq_copy/rq %d/%d/%d\n",
149 fnic->mac_addr[0], fnic->mac_addr[1], fnic->mac_addr[2],
150 fnic->mac_addr[3], fnic->mac_addr[4], fnic->mac_addr[5],
151 c->wq_enet_desc_count, c->wq_copy_desc_count,
152 c->rq_desc_count);
153 shost_printk(KERN_INFO, fnic->lport->host,
154 "vNIC node wwn %llx port wwn %llx\n",
155 c->node_wwn, c->port_wwn);
156 shost_printk(KERN_INFO, fnic->lport->host,
157 "vNIC ed_tov %d ra_tov %d\n",
158 c->ed_tov, c->ra_tov);
159 shost_printk(KERN_INFO, fnic->lport->host,
160 "vNIC mtu %d intr timer %d\n",
161 c->maxdatafieldsize, c->intr_timer);
162 shost_printk(KERN_INFO, fnic->lport->host,
163 "vNIC flags 0x%x luns per tgt %d\n",
164 c->flags, c->luns_per_tgt);
165 shost_printk(KERN_INFO, fnic->lport->host,
166 "vNIC flogi_retries %d flogi timeout %d\n",
167 c->flogi_retries, c->flogi_timeout);
168 shost_printk(KERN_INFO, fnic->lport->host,
169 "vNIC plogi retries %d plogi timeout %d\n",
170 c->plogi_retries, c->plogi_timeout);
171 shost_printk(KERN_INFO, fnic->lport->host,
172 "vNIC io throttle count %d link dn timeout %d\n",
173 c->io_throttle_count, c->link_down_timeout);
174 shost_printk(KERN_INFO, fnic->lport->host,
175 "vNIC port dn io retries %d port dn timeout %d\n",
176 c->port_down_io_retries, c->port_down_timeout);
177
178 return 0;
179}
180
181int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
182 u8 rss_hash_type,
183 u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable,
184 u8 tso_ipid_split_en, u8 ig_vlan_strip_en)
185{
186 u64 a0, a1;
187 u32 nic_cfg;
188 int wait = 1000;
189
190 vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
191 rss_hash_type, rss_hash_bits, rss_base_cpu,
192 rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
193
194 a0 = nic_cfg;
195 a1 = 0;
196
197 return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
198}
199
200void fnic_get_res_counts(struct fnic *fnic)
201{
202 fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
203 fnic->raw_wq_count = fnic->wq_count - 1;
204 fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_count;
205 fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
206 fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
207 fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
208 RES_TYPE_INTR_CTRL);
209}
210
211void fnic_free_vnic_resources(struct fnic *fnic)
212{
213 unsigned int i;
214
215 for (i = 0; i < fnic->raw_wq_count; i++)
216 vnic_wq_free(&fnic->wq[i]);
217
218 for (i = 0; i < fnic->wq_copy_count; i++)
219 vnic_wq_copy_free(&fnic->wq_copy[i]);
220
221 for (i = 0; i < fnic->rq_count; i++)
222 vnic_rq_free(&fnic->rq[i]);
223
224 for (i = 0; i < fnic->cq_count; i++)
225 vnic_cq_free(&fnic->cq[i]);
226
227 for (i = 0; i < fnic->intr_count; i++)
228 vnic_intr_free(&fnic->intr[i]);
229}
230
231int fnic_alloc_vnic_resources(struct fnic *fnic)
232{
233 enum vnic_dev_intr_mode intr_mode;
234 unsigned int mask_on_assertion;
235 unsigned int interrupt_offset;
236 unsigned int error_interrupt_enable;
237 unsigned int error_interrupt_offset;
238 unsigned int i, cq_index;
239 unsigned int wq_copy_cq_desc_count;
240 int err;
241
242 intr_mode = vnic_dev_get_intr_mode(fnic->vdev);
243
244 shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n",
245 intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
246 intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
247 intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
248 "MSI-X" : "unknown");
249
250 shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: "
251 "wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n",
252 fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count,
253 fnic->rq_count, fnic->cq_count, fnic->intr_count);
254
255 /* Allocate Raw WQ used for FCS frames */
256 for (i = 0; i < fnic->raw_wq_count; i++) {
257 err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i,
258 fnic->config.wq_enet_desc_count,
259 sizeof(struct wq_enet_desc));
260 if (err)
261 goto err_out_cleanup;
262 }
263
264 /* Allocate Copy WQs used for SCSI IOs */
265 for (i = 0; i < fnic->wq_copy_count; i++) {
266 err = vnic_wq_copy_alloc(fnic->vdev, &fnic->wq_copy[i],
267 (fnic->raw_wq_count + i),
268 fnic->config.wq_copy_desc_count,
269 sizeof(struct fcpio_host_req));
270 if (err)
271 goto err_out_cleanup;
272 }
273
274 /* RQ for receiving FCS frames */
275 for (i = 0; i < fnic->rq_count; i++) {
276 err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i,
277 fnic->config.rq_desc_count,
278 sizeof(struct rq_enet_desc));
279 if (err)
280 goto err_out_cleanup;
281 }
282
283 /* CQ for each RQ */
284 for (i = 0; i < fnic->rq_count; i++) {
285 cq_index = i;
286 err = vnic_cq_alloc(fnic->vdev,
287 &fnic->cq[cq_index], cq_index,
288 fnic->config.rq_desc_count,
289 sizeof(struct cq_enet_rq_desc));
290 if (err)
291 goto err_out_cleanup;
292 }
293
294 /* CQ for each WQ */
295 for (i = 0; i < fnic->raw_wq_count; i++) {
296 cq_index = fnic->rq_count + i;
297 err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index,
298 fnic->config.wq_enet_desc_count,
299 sizeof(struct cq_enet_wq_desc));
300 if (err)
301 goto err_out_cleanup;
302 }
303
304 /* CQ for each COPY WQ */
305 wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3);
306 for (i = 0; i < fnic->wq_copy_count; i++) {
307 cq_index = fnic->raw_wq_count + fnic->rq_count + i;
308 err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index],
309 cq_index,
310 wq_copy_cq_desc_count,
311 sizeof(struct fcpio_fw_req));
312 if (err)
313 goto err_out_cleanup;
314 }
315
316 for (i = 0; i < fnic->intr_count; i++) {
317 err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i);
318 if (err)
319 goto err_out_cleanup;
320 }
321
322 fnic->legacy_pba = vnic_dev_get_res(fnic->vdev,
323 RES_TYPE_INTR_PBA_LEGACY, 0);
324
325 if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
326 shost_printk(KERN_ERR, fnic->lport->host,
327 "Failed to hook legacy pba resource\n");
328 err = -ENODEV;
329 goto err_out_cleanup;
330 }
331
332 /*
333 * Init RQ/WQ resources.
334 *
335 * RQ[0 to n-1] point to CQ[0 to n-1]
336 * WQ[0 to m-1] point to CQ[n to n+m-1]
337 * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1]
338 *
339 * Note for copy wq we always initialize with cq_index = 0
340 *
341 * Error interrupt is not enabled for MSI.
342 */
343
344 switch (intr_mode) {
345 case VNIC_DEV_INTR_MODE_INTX:
346 case VNIC_DEV_INTR_MODE_MSIX:
347 error_interrupt_enable = 1;
348 error_interrupt_offset = fnic->err_intr_offset;
349 break;
350 default:
351 error_interrupt_enable = 0;
352 error_interrupt_offset = 0;
353 break;
354 }
355
356 for (i = 0; i < fnic->rq_count; i++) {
357 cq_index = i;
358 vnic_rq_init(&fnic->rq[i],
359 cq_index,
360 error_interrupt_enable,
361 error_interrupt_offset);
362 }
363
364 for (i = 0; i < fnic->raw_wq_count; i++) {
365 cq_index = i + fnic->rq_count;
366 vnic_wq_init(&fnic->wq[i],
367 cq_index,
368 error_interrupt_enable,
369 error_interrupt_offset);
370 }
371
372 for (i = 0; i < fnic->wq_copy_count; i++) {
373 vnic_wq_copy_init(&fnic->wq_copy[i],
374 0 /* cq_index 0 - always */,
375 error_interrupt_enable,
376 error_interrupt_offset);
377 }
378
379 for (i = 0; i < fnic->cq_count; i++) {
380
381 switch (intr_mode) {
382 case VNIC_DEV_INTR_MODE_MSIX:
383 interrupt_offset = i;
384 break;
385 default:
386 interrupt_offset = 0;
387 break;
388 }
389
390 vnic_cq_init(&fnic->cq[i],
391 0 /* flow_control_enable */,
392 1 /* color_enable */,
393 0 /* cq_head */,
394 0 /* cq_tail */,
395 1 /* cq_tail_color */,
396 1 /* interrupt_enable */,
397 1 /* cq_entry_enable */,
398 0 /* cq_message_enable */,
399 interrupt_offset,
400 0 /* cq_message_addr */);
401 }
402
403 /*
404 * Init INTR resources
405 *
406 * mask_on_assertion is not used for INTx due to the level-
407 * triggered nature of INTx
408 */
409
410 switch (intr_mode) {
411 case VNIC_DEV_INTR_MODE_MSI:
412 case VNIC_DEV_INTR_MODE_MSIX:
413 mask_on_assertion = 1;
414 break;
415 default:
416 mask_on_assertion = 0;
417 break;
418 }
419
420 for (i = 0; i < fnic->intr_count; i++) {
421 vnic_intr_init(&fnic->intr[i],
422 fnic->config.intr_timer,
423 fnic->config.intr_timer_type,
424 mask_on_assertion);
425 }
426
427 /* init the stats memory by making the first call here */
428 err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
429 if (err) {
430 shost_printk(KERN_ERR, fnic->lport->host,
431 "vnic_dev_stats_dump failed - x%x\n", err);
432 goto err_out_cleanup;
433 }
434
435 /* Clear LIF stats */
436 vnic_dev_stats_clear(fnic->vdev);
437
438 return 0;
439
440err_out_cleanup:
441 fnic_free_vnic_resources(fnic);
442
443 return err;
444}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 18:39:23 -0500