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01f2e4ea | 1 | /* |
29046f9b | 2 | * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. |
01f2e4ea SF |
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 | */ | |
19 | ||
20 | #include <linux/kernel.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/pci.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/if_ether.h> | |
26 | ||
27 | #include "vnic_resource.h" | |
28 | #include "vnic_devcmd.h" | |
29 | #include "vnic_dev.h" | |
30 | #include "vnic_stats.h" | |
31 | ||
70feadf3 VK |
32 | enum vnic_proxy_type { |
33 | PROXY_NONE, | |
34 | PROXY_BY_BDF, | |
35 | }; | |
36 | ||
01f2e4ea SF |
37 | struct vnic_res { |
38 | void __iomem *vaddr; | |
27e6c7d3 | 39 | dma_addr_t bus_addr; |
01f2e4ea SF |
40 | unsigned int count; |
41 | }; | |
42 | ||
43 | struct vnic_dev { | |
44 | void *priv; | |
45 | struct pci_dev *pdev; | |
46 | struct vnic_res res[RES_TYPE_MAX]; | |
47 | enum vnic_dev_intr_mode intr_mode; | |
48 | struct vnic_devcmd __iomem *devcmd; | |
49 | struct vnic_devcmd_notify *notify; | |
50 | struct vnic_devcmd_notify notify_copy; | |
51 | dma_addr_t notify_pa; | |
27372bf5 | 52 | u32 notify_sz; |
01f2e4ea SF |
53 | dma_addr_t linkstatus_pa; |
54 | struct vnic_stats *stats; | |
55 | dma_addr_t stats_pa; | |
56 | struct vnic_devcmd_fw_info *fw_info; | |
57 | dma_addr_t fw_info_pa; | |
70feadf3 VK |
58 | enum vnic_proxy_type proxy; |
59 | u32 proxy_index; | |
60 | u64 args[VNIC_DEVCMD_NARGS]; | |
01f2e4ea SF |
61 | }; |
62 | ||
63 | #define VNIC_MAX_RES_HDR_SIZE \ | |
64 | (sizeof(struct vnic_resource_header) + \ | |
65 | sizeof(struct vnic_resource) * RES_TYPE_MAX) | |
66 | #define VNIC_RES_STRIDE 128 | |
67 | ||
68 | void *vnic_dev_priv(struct vnic_dev *vdev) | |
69 | { | |
70 | return vdev->priv; | |
71 | } | |
72 | ||
73 | static int vnic_dev_discover_res(struct vnic_dev *vdev, | |
27e6c7d3 | 74 | struct vnic_dev_bar *bar, unsigned int num_bars) |
01f2e4ea SF |
75 | { |
76 | struct vnic_resource_header __iomem *rh; | |
90cf0b53 | 77 | struct mgmt_barmap_hdr __iomem *mrh; |
01f2e4ea SF |
78 | struct vnic_resource __iomem *r; |
79 | u8 type; | |
80 | ||
27e6c7d3 SF |
81 | if (num_bars == 0) |
82 | return -EINVAL; | |
83 | ||
01f2e4ea | 84 | if (bar->len < VNIC_MAX_RES_HDR_SIZE) { |
a7a79deb | 85 | pr_err("vNIC BAR0 res hdr length error\n"); |
01f2e4ea SF |
86 | return -EINVAL; |
87 | } | |
88 | ||
90cf0b53 RP |
89 | rh = bar->vaddr; |
90 | mrh = bar->vaddr; | |
01f2e4ea | 91 | if (!rh) { |
a7a79deb | 92 | pr_err("vNIC BAR0 res hdr not mem-mapped\n"); |
01f2e4ea SF |
93 | return -EINVAL; |
94 | } | |
95 | ||
90cf0b53 RP |
96 | /* Check for mgmt vnic in addition to normal vnic */ |
97 | if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) || | |
98 | (ioread32(&rh->version) != VNIC_RES_VERSION)) { | |
99 | if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) || | |
100 | (ioread32(&mrh->version) != MGMTVNIC_VERSION)) { | |
101 | pr_err("vNIC BAR0 res magic/version error " | |
102 | "exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n", | |
01f2e4ea | 103 | VNIC_RES_MAGIC, VNIC_RES_VERSION, |
90cf0b53 | 104 | MGMTVNIC_MAGIC, MGMTVNIC_VERSION, |
01f2e4ea | 105 | ioread32(&rh->magic), ioread32(&rh->version)); |
90cf0b53 RP |
106 | return -EINVAL; |
107 | } | |
01f2e4ea SF |
108 | } |
109 | ||
90cf0b53 RP |
110 | if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC) |
111 | r = (struct vnic_resource __iomem *)(mrh + 1); | |
112 | else | |
113 | r = (struct vnic_resource __iomem *)(rh + 1); | |
114 | ||
01f2e4ea SF |
115 | |
116 | while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { | |
117 | ||
118 | u8 bar_num = ioread8(&r->bar); | |
119 | u32 bar_offset = ioread32(&r->bar_offset); | |
120 | u32 count = ioread32(&r->count); | |
121 | u32 len; | |
122 | ||
123 | r++; | |
124 | ||
27e6c7d3 SF |
125 | if (bar_num >= num_bars) |
126 | continue; | |
127 | ||
128 | if (!bar[bar_num].len || !bar[bar_num].vaddr) | |
01f2e4ea SF |
129 | continue; |
130 | ||
131 | switch (type) { | |
132 | case RES_TYPE_WQ: | |
133 | case RES_TYPE_RQ: | |
134 | case RES_TYPE_CQ: | |
135 | case RES_TYPE_INTR_CTRL: | |
136 | /* each count is stride bytes long */ | |
137 | len = count * VNIC_RES_STRIDE; | |
27e6c7d3 | 138 | if (len + bar_offset > bar[bar_num].len) { |
a7a79deb | 139 | pr_err("vNIC BAR0 resource %d " |
01f2e4ea SF |
140 | "out-of-bounds, offset 0x%x + " |
141 | "size 0x%x > bar len 0x%lx\n", | |
142 | type, bar_offset, | |
143 | len, | |
27e6c7d3 | 144 | bar[bar_num].len); |
01f2e4ea SF |
145 | return -EINVAL; |
146 | } | |
147 | break; | |
148 | case RES_TYPE_INTR_PBA_LEGACY: | |
149 | case RES_TYPE_DEVCMD: | |
150 | len = count; | |
151 | break; | |
152 | default: | |
153 | continue; | |
154 | } | |
155 | ||
156 | vdev->res[type].count = count; | |
27e6c7d3 SF |
157 | vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr + |
158 | bar_offset; | |
159 | vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset; | |
01f2e4ea SF |
160 | } |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
165 | unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, | |
166 | enum vnic_res_type type) | |
167 | { | |
168 | return vdev->res[type].count; | |
169 | } | |
170 | ||
171 | void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, | |
172 | unsigned int index) | |
173 | { | |
174 | if (!vdev->res[type].vaddr) | |
175 | return NULL; | |
176 | ||
177 | switch (type) { | |
178 | case RES_TYPE_WQ: | |
179 | case RES_TYPE_RQ: | |
180 | case RES_TYPE_CQ: | |
181 | case RES_TYPE_INTR_CTRL: | |
182 | return (char __iomem *)vdev->res[type].vaddr + | |
183 | index * VNIC_RES_STRIDE; | |
184 | default: | |
185 | return (char __iomem *)vdev->res[type].vaddr; | |
186 | } | |
187 | } | |
188 | ||
2fdba388 | 189 | static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, |
01f2e4ea SF |
190 | unsigned int desc_count, unsigned int desc_size) |
191 | { | |
192 | /* The base address of the desc rings must be 512 byte aligned. | |
193 | * Descriptor count is aligned to groups of 32 descriptors. A | |
194 | * count of 0 means the maximum 4096 descriptors. Descriptor | |
195 | * size is aligned to 16 bytes. | |
196 | */ | |
197 | ||
198 | unsigned int count_align = 32; | |
199 | unsigned int desc_align = 16; | |
200 | ||
201 | ring->base_align = 512; | |
202 | ||
203 | if (desc_count == 0) | |
204 | desc_count = 4096; | |
205 | ||
206 | ring->desc_count = ALIGN(desc_count, count_align); | |
207 | ||
208 | ring->desc_size = ALIGN(desc_size, desc_align); | |
209 | ||
210 | ring->size = ring->desc_count * ring->desc_size; | |
211 | ring->size_unaligned = ring->size + ring->base_align; | |
212 | ||
213 | return ring->size_unaligned; | |
214 | } | |
215 | ||
216 | void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) | |
217 | { | |
218 | memset(ring->descs, 0, ring->size); | |
219 | } | |
220 | ||
221 | int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, | |
222 | unsigned int desc_count, unsigned int desc_size) | |
223 | { | |
224 | vnic_dev_desc_ring_size(ring, desc_count, desc_size); | |
225 | ||
226 | ring->descs_unaligned = pci_alloc_consistent(vdev->pdev, | |
227 | ring->size_unaligned, | |
228 | &ring->base_addr_unaligned); | |
229 | ||
230 | if (!ring->descs_unaligned) { | |
a7a79deb | 231 | pr_err("Failed to allocate ring (size=%d), aborting\n", |
01f2e4ea SF |
232 | (int)ring->size); |
233 | return -ENOMEM; | |
234 | } | |
235 | ||
236 | ring->base_addr = ALIGN(ring->base_addr_unaligned, | |
237 | ring->base_align); | |
238 | ring->descs = (u8 *)ring->descs_unaligned + | |
239 | (ring->base_addr - ring->base_addr_unaligned); | |
240 | ||
241 | vnic_dev_clear_desc_ring(ring); | |
242 | ||
243 | ring->desc_avail = ring->desc_count - 1; | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) | |
249 | { | |
250 | if (ring->descs) { | |
251 | pci_free_consistent(vdev->pdev, | |
252 | ring->size_unaligned, | |
253 | ring->descs_unaligned, | |
254 | ring->base_addr_unaligned); | |
255 | ring->descs = NULL; | |
256 | } | |
257 | } | |
258 | ||
70feadf3 VK |
259 | static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, |
260 | int wait) | |
01f2e4ea SF |
261 | { |
262 | struct vnic_devcmd __iomem *devcmd = vdev->devcmd; | |
70feadf3 | 263 | unsigned int i; |
01f2e4ea SF |
264 | int delay; |
265 | u32 status; | |
01f2e4ea SF |
266 | int err; |
267 | ||
268 | status = ioread32(&devcmd->status); | |
506e1198 VK |
269 | if (status == 0xFFFFFFFF) { |
270 | /* PCI-e target device is gone */ | |
271 | return -ENODEV; | |
272 | } | |
01f2e4ea | 273 | if (status & STAT_BUSY) { |
a7a79deb | 274 | pr_err("Busy devcmd %d\n", _CMD_N(cmd)); |
01f2e4ea SF |
275 | return -EBUSY; |
276 | } | |
277 | ||
278 | if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { | |
70feadf3 VK |
279 | for (i = 0; i < VNIC_DEVCMD_NARGS; i++) |
280 | writeq(vdev->args[i], &devcmd->args[i]); | |
01f2e4ea SF |
281 | wmb(); |
282 | } | |
283 | ||
284 | iowrite32(cmd, &devcmd->cmd); | |
285 | ||
286 | if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) | |
27e6c7d3 | 287 | return 0; |
01f2e4ea SF |
288 | |
289 | for (delay = 0; delay < wait; delay++) { | |
290 | ||
291 | udelay(100); | |
292 | ||
293 | status = ioread32(&devcmd->status); | |
506e1198 VK |
294 | if (status == 0xFFFFFFFF) { |
295 | /* PCI-e target device is gone */ | |
296 | return -ENODEV; | |
297 | } | |
70feadf3 | 298 | |
01f2e4ea SF |
299 | if (!(status & STAT_BUSY)) { |
300 | ||
301 | if (status & STAT_ERROR) { | |
27372bf5 SF |
302 | err = (int)readq(&devcmd->args[0]); |
303 | if (err != ERR_ECMDUNKNOWN || | |
304 | cmd != CMD_CAPABILITY) | |
a7a79deb | 305 | pr_err("Error %d devcmd %d\n", |
27372bf5 SF |
306 | err, _CMD_N(cmd)); |
307 | return err; | |
01f2e4ea SF |
308 | } |
309 | ||
310 | if (_CMD_DIR(cmd) & _CMD_DIR_READ) { | |
311 | rmb(); | |
70feadf3 VK |
312 | for (i = 0; i < VNIC_DEVCMD_NARGS; i++) |
313 | vdev->args[i] = readq(&devcmd->args[i]); | |
01f2e4ea SF |
314 | } |
315 | ||
316 | return 0; | |
317 | } | |
318 | } | |
319 | ||
a7a79deb | 320 | pr_err("Timedout devcmd %d\n", _CMD_N(cmd)); |
01f2e4ea SF |
321 | return -ETIMEDOUT; |
322 | } | |
323 | ||
70feadf3 VK |
324 | static int vnic_dev_cmd_proxy_by_bdf(struct vnic_dev *vdev, |
325 | enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) | |
326 | { | |
327 | u32 status; | |
328 | int err; | |
329 | ||
330 | memset(vdev->args, 0, sizeof(vdev->args)); | |
331 | ||
332 | vdev->args[0] = vdev->proxy_index; /* bdf */ | |
333 | vdev->args[1] = cmd; | |
334 | vdev->args[2] = *a0; | |
335 | vdev->args[3] = *a1; | |
336 | ||
337 | err = _vnic_dev_cmd(vdev, CMD_PROXY_BY_BDF, wait); | |
338 | if (err) | |
339 | return err; | |
340 | ||
341 | status = (u32)vdev->args[0]; | |
342 | if (status & STAT_ERROR) { | |
343 | err = (int)vdev->args[1]; | |
344 | if (err != ERR_ECMDUNKNOWN || | |
345 | cmd != CMD_CAPABILITY) | |
346 | pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd)); | |
347 | return err; | |
348 | } | |
349 | ||
350 | *a0 = vdev->args[1]; | |
351 | *a1 = vdev->args[2]; | |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
356 | static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev, | |
357 | enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) | |
358 | { | |
359 | int err; | |
360 | ||
361 | vdev->args[0] = *a0; | |
362 | vdev->args[1] = *a1; | |
363 | ||
364 | err = _vnic_dev_cmd(vdev, cmd, wait); | |
365 | ||
366 | *a0 = vdev->args[0]; | |
367 | *a1 = vdev->args[1]; | |
368 | ||
369 | return err; | |
370 | } | |
371 | ||
70feadf3 VK |
372 | int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, |
373 | u64 *a0, u64 *a1, int wait) | |
374 | { | |
375 | memset(vdev->args, 0, sizeof(vdev->args)); | |
376 | ||
377 | switch (vdev->proxy) { | |
378 | case PROXY_BY_BDF: | |
379 | return vnic_dev_cmd_proxy_by_bdf(vdev, cmd, a0, a1, wait); | |
380 | case PROXY_NONE: | |
381 | default: | |
382 | return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait); | |
383 | } | |
384 | } | |
385 | ||
5e4232ee | 386 | static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd) |
27372bf5 SF |
387 | { |
388 | u64 a0 = (u32)cmd, a1 = 0; | |
389 | int wait = 1000; | |
390 | int err; | |
391 | ||
392 | err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait); | |
393 | ||
394 | return !(err || a0); | |
395 | } | |
396 | ||
01f2e4ea SF |
397 | int vnic_dev_fw_info(struct vnic_dev *vdev, |
398 | struct vnic_devcmd_fw_info **fw_info) | |
399 | { | |
400 | u64 a0, a1 = 0; | |
401 | int wait = 1000; | |
402 | int err = 0; | |
403 | ||
404 | if (!vdev->fw_info) { | |
405 | vdev->fw_info = pci_alloc_consistent(vdev->pdev, | |
406 | sizeof(struct vnic_devcmd_fw_info), | |
407 | &vdev->fw_info_pa); | |
408 | if (!vdev->fw_info) | |
409 | return -ENOMEM; | |
410 | ||
411 | a0 = vdev->fw_info_pa; | |
412 | ||
413 | /* only get fw_info once and cache it */ | |
414 | err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); | |
415 | } | |
416 | ||
417 | *fw_info = vdev->fw_info; | |
418 | ||
419 | return err; | |
420 | } | |
421 | ||
422 | int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, | |
423 | void *value) | |
424 | { | |
425 | u64 a0, a1; | |
426 | int wait = 1000; | |
427 | int err; | |
428 | ||
429 | a0 = offset; | |
430 | a1 = size; | |
431 | ||
432 | err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); | |
433 | ||
434 | switch (size) { | |
435 | case 1: *(u8 *)value = (u8)a0; break; | |
436 | case 2: *(u16 *)value = (u16)a0; break; | |
437 | case 4: *(u32 *)value = (u32)a0; break; | |
438 | case 8: *(u64 *)value = a0; break; | |
439 | default: BUG(); break; | |
440 | } | |
441 | ||
442 | return err; | |
443 | } | |
444 | ||
01f2e4ea SF |
445 | int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) |
446 | { | |
447 | u64 a0, a1; | |
448 | int wait = 1000; | |
449 | ||
450 | if (!vdev->stats) { | |
451 | vdev->stats = pci_alloc_consistent(vdev->pdev, | |
452 | sizeof(struct vnic_stats), &vdev->stats_pa); | |
453 | if (!vdev->stats) | |
454 | return -ENOMEM; | |
455 | } | |
456 | ||
457 | *stats = vdev->stats; | |
458 | a0 = vdev->stats_pa; | |
459 | a1 = sizeof(struct vnic_stats); | |
460 | ||
461 | return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); | |
462 | } | |
463 | ||
464 | int vnic_dev_close(struct vnic_dev *vdev) | |
465 | { | |
466 | u64 a0 = 0, a1 = 0; | |
467 | int wait = 1000; | |
468 | return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); | |
469 | } | |
470 | ||
2db77e0f | 471 | int vnic_dev_enable_wait(struct vnic_dev *vdev) |
01f2e4ea SF |
472 | { |
473 | u64 a0 = 0, a1 = 0; | |
474 | int wait = 1000; | |
2db77e0f VK |
475 | int err; |
476 | ||
477 | err = vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait); | |
478 | if (err == ERR_ECMDUNKNOWN) | |
479 | return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); | |
480 | ||
481 | return err; | |
01f2e4ea SF |
482 | } |
483 | ||
484 | int vnic_dev_disable(struct vnic_dev *vdev) | |
485 | { | |
486 | u64 a0 = 0, a1 = 0; | |
487 | int wait = 1000; | |
488 | return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); | |
489 | } | |
490 | ||
491 | int vnic_dev_open(struct vnic_dev *vdev, int arg) | |
492 | { | |
493 | u64 a0 = (u32)arg, a1 = 0; | |
494 | int wait = 1000; | |
495 | return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); | |
496 | } | |
497 | ||
498 | int vnic_dev_open_done(struct vnic_dev *vdev, int *done) | |
499 | { | |
500 | u64 a0 = 0, a1 = 0; | |
501 | int wait = 1000; | |
502 | int err; | |
503 | ||
504 | *done = 0; | |
505 | ||
506 | err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); | |
507 | if (err) | |
508 | return err; | |
509 | ||
510 | *done = (a0 == 0); | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
2fdba388 | 515 | static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) |
01f2e4ea SF |
516 | { |
517 | u64 a0 = (u32)arg, a1 = 0; | |
518 | int wait = 1000; | |
519 | return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); | |
520 | } | |
521 | ||
2fdba388 | 522 | static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) |
01f2e4ea SF |
523 | { |
524 | u64 a0 = 0, a1 = 0; | |
525 | int wait = 1000; | |
526 | int err; | |
527 | ||
528 | *done = 0; | |
529 | ||
530 | err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); | |
531 | if (err) | |
532 | return err; | |
533 | ||
534 | *done = (a0 == 0); | |
535 | ||
536 | return 0; | |
537 | } | |
538 | ||
99ef5639 VK |
539 | int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg) |
540 | { | |
541 | u64 a0 = (u32)arg, a1 = 0; | |
542 | int wait = 1000; | |
543 | int err; | |
544 | ||
545 | err = vnic_dev_cmd(vdev, CMD_HANG_RESET, &a0, &a1, wait); | |
546 | if (err == ERR_ECMDUNKNOWN) { | |
547 | err = vnic_dev_soft_reset(vdev, arg); | |
548 | if (err) | |
549 | return err; | |
550 | ||
551 | return vnic_dev_init(vdev, 0); | |
552 | } | |
553 | ||
554 | return err; | |
555 | } | |
556 | ||
557 | int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done) | |
558 | { | |
559 | u64 a0 = 0, a1 = 0; | |
560 | int wait = 1000; | |
561 | int err; | |
562 | ||
563 | *done = 0; | |
564 | ||
565 | err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS, &a0, &a1, wait); | |
566 | if (err) { | |
567 | if (err == ERR_ECMDUNKNOWN) | |
568 | return vnic_dev_soft_reset_done(vdev, done); | |
569 | return err; | |
570 | } | |
571 | ||
572 | *done = (a0 == 0); | |
573 | ||
574 | return 0; | |
575 | } | |
576 | ||
01f2e4ea SF |
577 | int vnic_dev_hang_notify(struct vnic_dev *vdev) |
578 | { | |
579 | u64 a0, a1; | |
580 | int wait = 1000; | |
581 | return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); | |
582 | } | |
583 | ||
584 | int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) | |
585 | { | |
586 | u64 a0, a1; | |
587 | int wait = 1000; | |
588 | int err, i; | |
589 | ||
590 | for (i = 0; i < ETH_ALEN; i++) | |
591 | mac_addr[i] = 0; | |
592 | ||
593 | err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); | |
594 | if (err) | |
595 | return err; | |
596 | ||
597 | for (i = 0; i < ETH_ALEN; i++) | |
598 | mac_addr[i] = ((u8 *)&a0)[i]; | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
383ab92f | 603 | int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, |
01f2e4ea SF |
604 | int broadcast, int promisc, int allmulti) |
605 | { | |
606 | u64 a0, a1 = 0; | |
607 | int wait = 1000; | |
608 | int err; | |
609 | ||
610 | a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | | |
611 | (multicast ? CMD_PFILTER_MULTICAST : 0) | | |
612 | (broadcast ? CMD_PFILTER_BROADCAST : 0) | | |
613 | (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | | |
614 | (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); | |
615 | ||
616 | err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); | |
617 | if (err) | |
a7a79deb | 618 | pr_err("Can't set packet filter\n"); |
383ab92f VK |
619 | |
620 | return err; | |
01f2e4ea SF |
621 | } |
622 | ||
f8bd9091 | 623 | int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) |
01f2e4ea SF |
624 | { |
625 | u64 a0 = 0, a1 = 0; | |
626 | int wait = 1000; | |
627 | int err; | |
628 | int i; | |
629 | ||
630 | for (i = 0; i < ETH_ALEN; i++) | |
631 | ((u8 *)&a0)[i] = addr[i]; | |
632 | ||
633 | err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); | |
634 | if (err) | |
a7a79deb | 635 | pr_err("Can't add addr [%pM], %d\n", addr, err); |
f8bd9091 SF |
636 | |
637 | return err; | |
01f2e4ea SF |
638 | } |
639 | ||
f8bd9091 | 640 | int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) |
01f2e4ea SF |
641 | { |
642 | u64 a0 = 0, a1 = 0; | |
643 | int wait = 1000; | |
644 | int err; | |
645 | int i; | |
646 | ||
647 | for (i = 0; i < ETH_ALEN; i++) | |
648 | ((u8 *)&a0)[i] = addr[i]; | |
649 | ||
650 | err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait); | |
651 | if (err) | |
a7a79deb | 652 | pr_err("Can't del addr [%pM], %d\n", addr, err); |
f8bd9091 SF |
653 | |
654 | return err; | |
01f2e4ea SF |
655 | } |
656 | ||
f8cac14a VK |
657 | int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev, |
658 | u8 ig_vlan_rewrite_mode) | |
659 | { | |
660 | u64 a0 = ig_vlan_rewrite_mode, a1 = 0; | |
661 | int wait = 1000; | |
662 | int err; | |
663 | ||
664 | err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait); | |
665 | if (err == ERR_ECMDUNKNOWN) | |
666 | return 0; | |
667 | ||
668 | return err; | |
669 | } | |
670 | ||
2fdba388 | 671 | static int vnic_dev_notify_setcmd(struct vnic_dev *vdev, |
d883aa76 | 672 | void *notify_addr, dma_addr_t notify_pa, u16 intr) |
01f2e4ea SF |
673 | { |
674 | u64 a0, a1; | |
675 | int wait = 1000; | |
27372bf5 | 676 | int r; |
01f2e4ea | 677 | |
d883aa76 VK |
678 | memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify)); |
679 | vdev->notify = notify_addr; | |
680 | vdev->notify_pa = notify_pa; | |
01f2e4ea | 681 | |
d883aa76 | 682 | a0 = (u64)notify_pa; |
01f2e4ea SF |
683 | a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; |
684 | a1 += sizeof(struct vnic_devcmd_notify); | |
685 | ||
27372bf5 SF |
686 | r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); |
687 | vdev->notify_sz = (r == 0) ? (u32)a1 : 0; | |
688 | return r; | |
01f2e4ea SF |
689 | } |
690 | ||
d883aa76 VK |
691 | int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) |
692 | { | |
693 | void *notify_addr; | |
694 | dma_addr_t notify_pa; | |
695 | ||
696 | if (vdev->notify || vdev->notify_pa) { | |
a7a79deb | 697 | pr_err("notify block %p still allocated", vdev->notify); |
d883aa76 VK |
698 | return -EINVAL; |
699 | } | |
700 | ||
701 | notify_addr = pci_alloc_consistent(vdev->pdev, | |
702 | sizeof(struct vnic_devcmd_notify), | |
703 | ¬ify_pa); | |
704 | if (!notify_addr) | |
705 | return -ENOMEM; | |
706 | ||
707 | return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr); | |
708 | } | |
709 | ||
2fdba388 | 710 | static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev) |
01f2e4ea SF |
711 | { |
712 | u64 a0, a1; | |
713 | int wait = 1000; | |
383ab92f | 714 | int err; |
01f2e4ea SF |
715 | |
716 | a0 = 0; /* paddr = 0 to unset notify buffer */ | |
717 | a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ | |
718 | a1 += sizeof(struct vnic_devcmd_notify); | |
719 | ||
383ab92f | 720 | err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); |
d883aa76 VK |
721 | vdev->notify = NULL; |
722 | vdev->notify_pa = 0; | |
27372bf5 | 723 | vdev->notify_sz = 0; |
383ab92f VK |
724 | |
725 | return err; | |
01f2e4ea SF |
726 | } |
727 | ||
383ab92f | 728 | int vnic_dev_notify_unset(struct vnic_dev *vdev) |
d883aa76 VK |
729 | { |
730 | if (vdev->notify) { | |
731 | pci_free_consistent(vdev->pdev, | |
732 | sizeof(struct vnic_devcmd_notify), | |
733 | vdev->notify, | |
734 | vdev->notify_pa); | |
735 | } | |
736 | ||
383ab92f | 737 | return vnic_dev_notify_unsetcmd(vdev); |
d883aa76 VK |
738 | } |
739 | ||
01f2e4ea SF |
740 | static int vnic_dev_notify_ready(struct vnic_dev *vdev) |
741 | { | |
742 | u32 *words; | |
27372bf5 | 743 | unsigned int nwords = vdev->notify_sz / 4; |
01f2e4ea SF |
744 | unsigned int i; |
745 | u32 csum; | |
746 | ||
27372bf5 | 747 | if (!vdev->notify || !vdev->notify_sz) |
01f2e4ea SF |
748 | return 0; |
749 | ||
750 | do { | |
751 | csum = 0; | |
27372bf5 | 752 | memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz); |
01f2e4ea SF |
753 | words = (u32 *)&vdev->notify_copy; |
754 | for (i = 1; i < nwords; i++) | |
755 | csum += words[i]; | |
756 | } while (csum != words[0]); | |
757 | ||
758 | return 1; | |
759 | } | |
760 | ||
761 | int vnic_dev_init(struct vnic_dev *vdev, int arg) | |
762 | { | |
763 | u64 a0 = (u32)arg, a1 = 0; | |
764 | int wait = 1000; | |
4cdc44a2 | 765 | int r = 0; |
27372bf5 | 766 | |
29046f9b | 767 | if (vnic_dev_capable(vdev, CMD_INIT)) |
27372bf5 SF |
768 | r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); |
769 | else { | |
770 | vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait); | |
771 | if (a0 & CMD_INITF_DEFAULT_MAC) { | |
70feadf3 VK |
772 | /* Emulate these for old CMD_INIT_v1 which |
773 | * didn't pass a0 so no CMD_INITF_*. | |
774 | */ | |
27372bf5 SF |
775 | vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); |
776 | vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); | |
777 | } | |
4cdc44a2 SF |
778 | } |
779 | return r; | |
01f2e4ea SF |
780 | } |
781 | ||
f8bd9091 SF |
782 | int vnic_dev_init_done(struct vnic_dev *vdev, int *done, int *err) |
783 | { | |
784 | u64 a0 = 0, a1 = 0; | |
785 | int wait = 1000; | |
786 | int ret; | |
787 | ||
788 | *done = 0; | |
789 | ||
790 | ret = vnic_dev_cmd(vdev, CMD_INIT_STATUS, &a0, &a1, wait); | |
791 | if (ret) | |
792 | return ret; | |
793 | ||
794 | *done = (a0 == 0); | |
795 | ||
70feadf3 | 796 | *err = (a0 == 0) ? (int)a1:0; |
f8bd9091 SF |
797 | |
798 | return 0; | |
799 | } | |
800 | ||
801 | int vnic_dev_init_prov(struct vnic_dev *vdev, u8 *buf, u32 len) | |
802 | { | |
803 | u64 a0, a1 = len; | |
804 | int wait = 1000; | |
d49aba84 | 805 | dma_addr_t prov_pa; |
f8bd9091 SF |
806 | void *prov_buf; |
807 | int ret; | |
808 | ||
809 | prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa); | |
810 | if (!prov_buf) | |
811 | return -ENOMEM; | |
812 | ||
813 | memcpy(prov_buf, buf, len); | |
814 | ||
815 | a0 = prov_pa; | |
816 | ||
817 | ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO, &a0, &a1, wait); | |
818 | ||
819 | pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa); | |
820 | ||
821 | return ret; | |
822 | } | |
823 | ||
824 | int vnic_dev_deinit(struct vnic_dev *vdev) | |
825 | { | |
826 | u64 a0 = 0, a1 = 0; | |
827 | int wait = 1000; | |
828 | ||
829 | return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait); | |
830 | } | |
831 | ||
01f2e4ea SF |
832 | int vnic_dev_link_status(struct vnic_dev *vdev) |
833 | { | |
01f2e4ea SF |
834 | if (!vnic_dev_notify_ready(vdev)) |
835 | return 0; | |
836 | ||
837 | return vdev->notify_copy.link_state; | |
838 | } | |
839 | ||
840 | u32 vnic_dev_port_speed(struct vnic_dev *vdev) | |
841 | { | |
842 | if (!vnic_dev_notify_ready(vdev)) | |
843 | return 0; | |
844 | ||
845 | return vdev->notify_copy.port_speed; | |
846 | } | |
847 | ||
848 | u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) | |
849 | { | |
850 | if (!vnic_dev_notify_ready(vdev)) | |
851 | return 0; | |
852 | ||
853 | return vdev->notify_copy.msglvl; | |
854 | } | |
855 | ||
856 | u32 vnic_dev_mtu(struct vnic_dev *vdev) | |
857 | { | |
858 | if (!vnic_dev_notify_ready(vdev)) | |
859 | return 0; | |
860 | ||
861 | return vdev->notify_copy.mtu; | |
862 | } | |
863 | ||
864 | void vnic_dev_set_intr_mode(struct vnic_dev *vdev, | |
865 | enum vnic_dev_intr_mode intr_mode) | |
866 | { | |
867 | vdev->intr_mode = intr_mode; | |
868 | } | |
869 | ||
870 | enum vnic_dev_intr_mode vnic_dev_get_intr_mode( | |
871 | struct vnic_dev *vdev) | |
872 | { | |
873 | return vdev->intr_mode; | |
874 | } | |
875 | ||
876 | void vnic_dev_unregister(struct vnic_dev *vdev) | |
877 | { | |
878 | if (vdev) { | |
879 | if (vdev->notify) | |
880 | pci_free_consistent(vdev->pdev, | |
881 | sizeof(struct vnic_devcmd_notify), | |
882 | vdev->notify, | |
883 | vdev->notify_pa); | |
01f2e4ea SF |
884 | if (vdev->stats) |
885 | pci_free_consistent(vdev->pdev, | |
29046f9b | 886 | sizeof(struct vnic_stats), |
01f2e4ea SF |
887 | vdev->stats, vdev->stats_pa); |
888 | if (vdev->fw_info) | |
889 | pci_free_consistent(vdev->pdev, | |
890 | sizeof(struct vnic_devcmd_fw_info), | |
891 | vdev->fw_info, vdev->fw_info_pa); | |
892 | kfree(vdev); | |
893 | } | |
894 | } | |
895 | ||
896 | struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, | |
27e6c7d3 SF |
897 | void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar, |
898 | unsigned int num_bars) | |
01f2e4ea SF |
899 | { |
900 | if (!vdev) { | |
901 | vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC); | |
902 | if (!vdev) | |
903 | return NULL; | |
904 | } | |
905 | ||
906 | vdev->priv = priv; | |
907 | vdev->pdev = pdev; | |
908 | ||
27e6c7d3 | 909 | if (vnic_dev_discover_res(vdev, bar, num_bars)) |
01f2e4ea SF |
910 | goto err_out; |
911 | ||
912 | vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); | |
913 | if (!vdev->devcmd) | |
914 | goto err_out; | |
915 | ||
916 | return vdev; | |
917 | ||
918 | err_out: | |
919 | vnic_dev_unregister(vdev); | |
920 | return NULL; | |
921 | } | |
922 | ||
27372bf5 | 923 |