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5df6d737 AJ |
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 | ||
34 | int 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, | |
78112e55 | 147 | "vNIC MAC addr %pM " |
5df6d737 | 148 | "wq/wq_copy/rq %d/%d/%d\n", |
78112e55 | 149 | fnic->ctlr.ctl_src_addr, |
5df6d737 AJ |
150 | c->wq_enet_desc_count, c->wq_copy_desc_count, |
151 | c->rq_desc_count); | |
152 | shost_printk(KERN_INFO, fnic->lport->host, | |
153 | "vNIC node wwn %llx port wwn %llx\n", | |
154 | c->node_wwn, c->port_wwn); | |
155 | shost_printk(KERN_INFO, fnic->lport->host, | |
156 | "vNIC ed_tov %d ra_tov %d\n", | |
157 | c->ed_tov, c->ra_tov); | |
158 | shost_printk(KERN_INFO, fnic->lport->host, | |
159 | "vNIC mtu %d intr timer %d\n", | |
160 | c->maxdatafieldsize, c->intr_timer); | |
161 | shost_printk(KERN_INFO, fnic->lport->host, | |
162 | "vNIC flags 0x%x luns per tgt %d\n", | |
163 | c->flags, c->luns_per_tgt); | |
164 | shost_printk(KERN_INFO, fnic->lport->host, | |
165 | "vNIC flogi_retries %d flogi timeout %d\n", | |
166 | c->flogi_retries, c->flogi_timeout); | |
167 | shost_printk(KERN_INFO, fnic->lport->host, | |
168 | "vNIC plogi retries %d plogi timeout %d\n", | |
169 | c->plogi_retries, c->plogi_timeout); | |
170 | shost_printk(KERN_INFO, fnic->lport->host, | |
171 | "vNIC io throttle count %d link dn timeout %d\n", | |
172 | c->io_throttle_count, c->link_down_timeout); | |
173 | shost_printk(KERN_INFO, fnic->lport->host, | |
174 | "vNIC port dn io retries %d port dn timeout %d\n", | |
175 | c->port_down_io_retries, c->port_down_timeout); | |
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 = fnic->wq_count - 1; | |
203 | fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_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 | ||
210 | void fnic_free_vnic_resources(struct fnic *fnic) | |
211 | { | |
212 | unsigned int i; | |
213 | ||
214 | for (i = 0; i < fnic->raw_wq_count; i++) | |
215 | vnic_wq_free(&fnic->wq[i]); | |
216 | ||
217 | for (i = 0; i < fnic->wq_copy_count; i++) | |
218 | vnic_wq_copy_free(&fnic->wq_copy[i]); | |
219 | ||
220 | for (i = 0; i < fnic->rq_count; i++) | |
221 | vnic_rq_free(&fnic->rq[i]); | |
222 | ||
223 | for (i = 0; i < fnic->cq_count; i++) | |
224 | vnic_cq_free(&fnic->cq[i]); | |
225 | ||
226 | for (i = 0; i < fnic->intr_count; i++) | |
227 | vnic_intr_free(&fnic->intr[i]); | |
228 | } | |
229 | ||
230 | int fnic_alloc_vnic_resources(struct fnic *fnic) | |
231 | { | |
232 | enum vnic_dev_intr_mode intr_mode; | |
233 | unsigned int mask_on_assertion; | |
234 | unsigned int interrupt_offset; | |
235 | unsigned int error_interrupt_enable; | |
236 | unsigned int error_interrupt_offset; | |
237 | unsigned int i, cq_index; | |
238 | unsigned int wq_copy_cq_desc_count; | |
239 | int err; | |
240 | ||
241 | intr_mode = vnic_dev_get_intr_mode(fnic->vdev); | |
242 | ||
243 | shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n", | |
244 | intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" : | |
245 | intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" : | |
246 | intr_mode == VNIC_DEV_INTR_MODE_MSIX ? | |
247 | "MSI-X" : "unknown"); | |
248 | ||
249 | shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: " | |
250 | "wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n", | |
251 | fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count, | |
252 | fnic->rq_count, fnic->cq_count, fnic->intr_count); | |
253 | ||
254 | /* Allocate Raw WQ used for FCS frames */ | |
255 | for (i = 0; i < fnic->raw_wq_count; i++) { | |
256 | err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i, | |
257 | fnic->config.wq_enet_desc_count, | |
258 | sizeof(struct wq_enet_desc)); | |
259 | if (err) | |
260 | goto err_out_cleanup; | |
261 | } | |
262 | ||
263 | /* Allocate Copy WQs used for SCSI IOs */ | |
264 | for (i = 0; i < fnic->wq_copy_count; i++) { | |
265 | err = vnic_wq_copy_alloc(fnic->vdev, &fnic->wq_copy[i], | |
266 | (fnic->raw_wq_count + i), | |
267 | fnic->config.wq_copy_desc_count, | |
268 | sizeof(struct fcpio_host_req)); | |
269 | if (err) | |
270 | goto err_out_cleanup; | |
271 | } | |
272 | ||
273 | /* RQ for receiving FCS frames */ | |
274 | for (i = 0; i < fnic->rq_count; i++) { | |
275 | err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i, | |
276 | fnic->config.rq_desc_count, | |
277 | sizeof(struct rq_enet_desc)); | |
278 | if (err) | |
279 | goto err_out_cleanup; | |
280 | } | |
281 | ||
282 | /* CQ for each RQ */ | |
283 | for (i = 0; i < fnic->rq_count; i++) { | |
284 | cq_index = i; | |
285 | err = vnic_cq_alloc(fnic->vdev, | |
286 | &fnic->cq[cq_index], cq_index, | |
287 | fnic->config.rq_desc_count, | |
288 | sizeof(struct cq_enet_rq_desc)); | |
289 | if (err) | |
290 | goto err_out_cleanup; | |
291 | } | |
292 | ||
293 | /* CQ for each WQ */ | |
294 | for (i = 0; i < fnic->raw_wq_count; i++) { | |
295 | cq_index = fnic->rq_count + i; | |
296 | err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index, | |
297 | fnic->config.wq_enet_desc_count, | |
298 | sizeof(struct cq_enet_wq_desc)); | |
299 | if (err) | |
300 | goto err_out_cleanup; | |
301 | } | |
302 | ||
303 | /* CQ for each COPY WQ */ | |
304 | wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3); | |
305 | for (i = 0; i < fnic->wq_copy_count; i++) { | |
306 | cq_index = fnic->raw_wq_count + fnic->rq_count + i; | |
307 | err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], | |
308 | cq_index, | |
309 | wq_copy_cq_desc_count, | |
310 | sizeof(struct fcpio_fw_req)); | |
311 | if (err) | |
312 | goto err_out_cleanup; | |
313 | } | |
314 | ||
315 | for (i = 0; i < fnic->intr_count; i++) { | |
316 | err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i); | |
317 | if (err) | |
318 | goto err_out_cleanup; | |
319 | } | |
320 | ||
321 | fnic->legacy_pba = vnic_dev_get_res(fnic->vdev, | |
322 | RES_TYPE_INTR_PBA_LEGACY, 0); | |
323 | ||
324 | if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) { | |
325 | shost_printk(KERN_ERR, fnic->lport->host, | |
326 | "Failed to hook legacy pba resource\n"); | |
327 | err = -ENODEV; | |
328 | goto err_out_cleanup; | |
329 | } | |
330 | ||
331 | /* | |
332 | * Init RQ/WQ resources. | |
333 | * | |
334 | * RQ[0 to n-1] point to CQ[0 to n-1] | |
335 | * WQ[0 to m-1] point to CQ[n to n+m-1] | |
336 | * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1] | |
337 | * | |
338 | * Note for copy wq we always initialize with cq_index = 0 | |
339 | * | |
340 | * Error interrupt is not enabled for MSI. | |
341 | */ | |
342 | ||
343 | switch (intr_mode) { | |
344 | case VNIC_DEV_INTR_MODE_INTX: | |
345 | case VNIC_DEV_INTR_MODE_MSIX: | |
346 | error_interrupt_enable = 1; | |
347 | error_interrupt_offset = fnic->err_intr_offset; | |
348 | break; | |
349 | default: | |
350 | error_interrupt_enable = 0; | |
351 | error_interrupt_offset = 0; | |
352 | break; | |
353 | } | |
354 | ||
355 | for (i = 0; i < fnic->rq_count; i++) { | |
356 | cq_index = i; | |
357 | vnic_rq_init(&fnic->rq[i], | |
358 | cq_index, | |
359 | error_interrupt_enable, | |
360 | error_interrupt_offset); | |
361 | } | |
362 | ||
363 | for (i = 0; i < fnic->raw_wq_count; i++) { | |
364 | cq_index = i + fnic->rq_count; | |
365 | vnic_wq_init(&fnic->wq[i], | |
366 | cq_index, | |
367 | error_interrupt_enable, | |
368 | error_interrupt_offset); | |
369 | } | |
370 | ||
371 | for (i = 0; i < fnic->wq_copy_count; i++) { | |
372 | vnic_wq_copy_init(&fnic->wq_copy[i], | |
373 | 0 /* cq_index 0 - always */, | |
374 | error_interrupt_enable, | |
375 | error_interrupt_offset); | |
376 | } | |
377 | ||
378 | for (i = 0; i < fnic->cq_count; i++) { | |
379 | ||
380 | switch (intr_mode) { | |
381 | case VNIC_DEV_INTR_MODE_MSIX: | |
382 | interrupt_offset = i; | |
383 | break; | |
384 | default: | |
385 | interrupt_offset = 0; | |
386 | break; | |
387 | } | |
388 | ||
389 | vnic_cq_init(&fnic->cq[i], | |
390 | 0 /* flow_control_enable */, | |
391 | 1 /* color_enable */, | |
392 | 0 /* cq_head */, | |
393 | 0 /* cq_tail */, | |
394 | 1 /* cq_tail_color */, | |
395 | 1 /* interrupt_enable */, | |
396 | 1 /* cq_entry_enable */, | |
397 | 0 /* cq_message_enable */, | |
398 | interrupt_offset, | |
399 | 0 /* cq_message_addr */); | |
400 | } | |
401 | ||
402 | /* | |
403 | * Init INTR resources | |
404 | * | |
405 | * mask_on_assertion is not used for INTx due to the level- | |
406 | * triggered nature of INTx | |
407 | */ | |
408 | ||
409 | switch (intr_mode) { | |
410 | case VNIC_DEV_INTR_MODE_MSI: | |
411 | case VNIC_DEV_INTR_MODE_MSIX: | |
412 | mask_on_assertion = 1; | |
413 | break; | |
414 | default: | |
415 | mask_on_assertion = 0; | |
416 | break; | |
417 | } | |
418 | ||
419 | for (i = 0; i < fnic->intr_count; i++) { | |
420 | vnic_intr_init(&fnic->intr[i], | |
421 | fnic->config.intr_timer, | |
422 | fnic->config.intr_timer_type, | |
423 | mask_on_assertion); | |
424 | } | |
425 | ||
426 | /* init the stats memory by making the first call here */ | |
427 | err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); | |
428 | if (err) { | |
429 | shost_printk(KERN_ERR, fnic->lport->host, | |
430 | "vnic_dev_stats_dump failed - x%x\n", err); | |
431 | goto err_out_cleanup; | |
432 | } | |
433 | ||
434 | /* Clear LIF stats */ | |
435 | vnic_dev_stats_clear(fnic->vdev); | |
436 | ||
437 | return 0; | |
438 | ||
439 | err_out_cleanup: | |
440 | fnic_free_vnic_resources(fnic); | |
441 | ||
442 | return err; | |
443 | } |