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01f2e4ea SF |
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 | */ | |
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 | ||
32 | struct vnic_res { | |
33 | void __iomem *vaddr; | |
34 | unsigned int count; | |
35 | }; | |
36 | ||
37 | struct vnic_dev { | |
38 | void *priv; | |
39 | struct pci_dev *pdev; | |
40 | struct vnic_res res[RES_TYPE_MAX]; | |
41 | enum vnic_dev_intr_mode intr_mode; | |
42 | struct vnic_devcmd __iomem *devcmd; | |
43 | struct vnic_devcmd_notify *notify; | |
44 | struct vnic_devcmd_notify notify_copy; | |
45 | dma_addr_t notify_pa; | |
27372bf5 | 46 | u32 notify_sz; |
01f2e4ea SF |
47 | u32 *linkstatus; |
48 | dma_addr_t linkstatus_pa; | |
49 | struct vnic_stats *stats; | |
50 | dma_addr_t stats_pa; | |
51 | struct vnic_devcmd_fw_info *fw_info; | |
52 | dma_addr_t fw_info_pa; | |
53 | }; | |
54 | ||
55 | #define VNIC_MAX_RES_HDR_SIZE \ | |
56 | (sizeof(struct vnic_resource_header) + \ | |
57 | sizeof(struct vnic_resource) * RES_TYPE_MAX) | |
58 | #define VNIC_RES_STRIDE 128 | |
59 | ||
60 | void *vnic_dev_priv(struct vnic_dev *vdev) | |
61 | { | |
62 | return vdev->priv; | |
63 | } | |
64 | ||
65 | static int vnic_dev_discover_res(struct vnic_dev *vdev, | |
66 | struct vnic_dev_bar *bar) | |
67 | { | |
68 | struct vnic_resource_header __iomem *rh; | |
69 | struct vnic_resource __iomem *r; | |
70 | u8 type; | |
71 | ||
72 | if (bar->len < VNIC_MAX_RES_HDR_SIZE) { | |
73 | printk(KERN_ERR "vNIC BAR0 res hdr length error\n"); | |
74 | return -EINVAL; | |
75 | } | |
76 | ||
77 | rh = bar->vaddr; | |
78 | if (!rh) { | |
79 | printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n"); | |
80 | return -EINVAL; | |
81 | } | |
82 | ||
83 | if (ioread32(&rh->magic) != VNIC_RES_MAGIC || | |
84 | ioread32(&rh->version) != VNIC_RES_VERSION) { | |
85 | printk(KERN_ERR "vNIC BAR0 res magic/version error " | |
86 | "exp (%lx/%lx) curr (%x/%x)\n", | |
87 | VNIC_RES_MAGIC, VNIC_RES_VERSION, | |
88 | ioread32(&rh->magic), ioread32(&rh->version)); | |
89 | return -EINVAL; | |
90 | } | |
91 | ||
92 | r = (struct vnic_resource __iomem *)(rh + 1); | |
93 | ||
94 | while ((type = ioread8(&r->type)) != RES_TYPE_EOL) { | |
95 | ||
96 | u8 bar_num = ioread8(&r->bar); | |
97 | u32 bar_offset = ioread32(&r->bar_offset); | |
98 | u32 count = ioread32(&r->count); | |
99 | u32 len; | |
100 | ||
101 | r++; | |
102 | ||
103 | if (bar_num != 0) /* only mapping in BAR0 resources */ | |
104 | continue; | |
105 | ||
106 | switch (type) { | |
107 | case RES_TYPE_WQ: | |
108 | case RES_TYPE_RQ: | |
109 | case RES_TYPE_CQ: | |
110 | case RES_TYPE_INTR_CTRL: | |
111 | /* each count is stride bytes long */ | |
112 | len = count * VNIC_RES_STRIDE; | |
113 | if (len + bar_offset > bar->len) { | |
114 | printk(KERN_ERR "vNIC BAR0 resource %d " | |
115 | "out-of-bounds, offset 0x%x + " | |
116 | "size 0x%x > bar len 0x%lx\n", | |
117 | type, bar_offset, | |
118 | len, | |
119 | bar->len); | |
120 | return -EINVAL; | |
121 | } | |
122 | break; | |
123 | case RES_TYPE_INTR_PBA_LEGACY: | |
124 | case RES_TYPE_DEVCMD: | |
125 | len = count; | |
126 | break; | |
127 | default: | |
128 | continue; | |
129 | } | |
130 | ||
131 | vdev->res[type].count = count; | |
132 | vdev->res[type].vaddr = (char __iomem *)bar->vaddr + bar_offset; | |
133 | } | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev, | |
139 | enum vnic_res_type type) | |
140 | { | |
141 | return vdev->res[type].count; | |
142 | } | |
143 | ||
144 | void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type, | |
145 | unsigned int index) | |
146 | { | |
147 | if (!vdev->res[type].vaddr) | |
148 | return NULL; | |
149 | ||
150 | switch (type) { | |
151 | case RES_TYPE_WQ: | |
152 | case RES_TYPE_RQ: | |
153 | case RES_TYPE_CQ: | |
154 | case RES_TYPE_INTR_CTRL: | |
155 | return (char __iomem *)vdev->res[type].vaddr + | |
156 | index * VNIC_RES_STRIDE; | |
157 | default: | |
158 | return (char __iomem *)vdev->res[type].vaddr; | |
159 | } | |
160 | } | |
161 | ||
162 | unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring, | |
163 | unsigned int desc_count, unsigned int desc_size) | |
164 | { | |
165 | /* The base address of the desc rings must be 512 byte aligned. | |
166 | * Descriptor count is aligned to groups of 32 descriptors. A | |
167 | * count of 0 means the maximum 4096 descriptors. Descriptor | |
168 | * size is aligned to 16 bytes. | |
169 | */ | |
170 | ||
171 | unsigned int count_align = 32; | |
172 | unsigned int desc_align = 16; | |
173 | ||
174 | ring->base_align = 512; | |
175 | ||
176 | if (desc_count == 0) | |
177 | desc_count = 4096; | |
178 | ||
179 | ring->desc_count = ALIGN(desc_count, count_align); | |
180 | ||
181 | ring->desc_size = ALIGN(desc_size, desc_align); | |
182 | ||
183 | ring->size = ring->desc_count * ring->desc_size; | |
184 | ring->size_unaligned = ring->size + ring->base_align; | |
185 | ||
186 | return ring->size_unaligned; | |
187 | } | |
188 | ||
189 | void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring) | |
190 | { | |
191 | memset(ring->descs, 0, ring->size); | |
192 | } | |
193 | ||
194 | int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring, | |
195 | unsigned int desc_count, unsigned int desc_size) | |
196 | { | |
197 | vnic_dev_desc_ring_size(ring, desc_count, desc_size); | |
198 | ||
199 | ring->descs_unaligned = pci_alloc_consistent(vdev->pdev, | |
200 | ring->size_unaligned, | |
201 | &ring->base_addr_unaligned); | |
202 | ||
203 | if (!ring->descs_unaligned) { | |
204 | printk(KERN_ERR | |
205 | "Failed to allocate ring (size=%d), aborting\n", | |
206 | (int)ring->size); | |
207 | return -ENOMEM; | |
208 | } | |
209 | ||
210 | ring->base_addr = ALIGN(ring->base_addr_unaligned, | |
211 | ring->base_align); | |
212 | ring->descs = (u8 *)ring->descs_unaligned + | |
213 | (ring->base_addr - ring->base_addr_unaligned); | |
214 | ||
215 | vnic_dev_clear_desc_ring(ring); | |
216 | ||
217 | ring->desc_avail = ring->desc_count - 1; | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring) | |
223 | { | |
224 | if (ring->descs) { | |
225 | pci_free_consistent(vdev->pdev, | |
226 | ring->size_unaligned, | |
227 | ring->descs_unaligned, | |
228 | ring->base_addr_unaligned); | |
229 | ring->descs = NULL; | |
230 | } | |
231 | } | |
232 | ||
233 | int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd, | |
234 | u64 *a0, u64 *a1, int wait) | |
235 | { | |
236 | struct vnic_devcmd __iomem *devcmd = vdev->devcmd; | |
237 | int delay; | |
238 | u32 status; | |
01f2e4ea SF |
239 | int err; |
240 | ||
241 | status = ioread32(&devcmd->status); | |
242 | if (status & STAT_BUSY) { | |
243 | printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd)); | |
244 | return -EBUSY; | |
245 | } | |
246 | ||
247 | if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) { | |
248 | writeq(*a0, &devcmd->args[0]); | |
249 | writeq(*a1, &devcmd->args[1]); | |
250 | wmb(); | |
251 | } | |
252 | ||
253 | iowrite32(cmd, &devcmd->cmd); | |
254 | ||
255 | if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT)) | |
256 | return 0; | |
257 | ||
258 | for (delay = 0; delay < wait; delay++) { | |
259 | ||
260 | udelay(100); | |
261 | ||
262 | status = ioread32(&devcmd->status); | |
263 | if (!(status & STAT_BUSY)) { | |
264 | ||
265 | if (status & STAT_ERROR) { | |
27372bf5 SF |
266 | err = (int)readq(&devcmd->args[0]); |
267 | if (err != ERR_ECMDUNKNOWN || | |
268 | cmd != CMD_CAPABILITY) | |
269 | printk(KERN_ERR "Error %d devcmd %d\n", | |
270 | err, _CMD_N(cmd)); | |
271 | return err; | |
01f2e4ea SF |
272 | } |
273 | ||
274 | if (_CMD_DIR(cmd) & _CMD_DIR_READ) { | |
275 | rmb(); | |
276 | *a0 = readq(&devcmd->args[0]); | |
277 | *a1 = readq(&devcmd->args[1]); | |
278 | } | |
279 | ||
280 | return 0; | |
281 | } | |
282 | } | |
283 | ||
284 | printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd)); | |
285 | return -ETIMEDOUT; | |
286 | } | |
287 | ||
5e4232ee | 288 | static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd) |
27372bf5 SF |
289 | { |
290 | u64 a0 = (u32)cmd, a1 = 0; | |
291 | int wait = 1000; | |
292 | int err; | |
293 | ||
294 | err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait); | |
295 | ||
296 | return !(err || a0); | |
297 | } | |
298 | ||
01f2e4ea SF |
299 | int vnic_dev_fw_info(struct vnic_dev *vdev, |
300 | struct vnic_devcmd_fw_info **fw_info) | |
301 | { | |
302 | u64 a0, a1 = 0; | |
303 | int wait = 1000; | |
304 | int err = 0; | |
305 | ||
306 | if (!vdev->fw_info) { | |
307 | vdev->fw_info = pci_alloc_consistent(vdev->pdev, | |
308 | sizeof(struct vnic_devcmd_fw_info), | |
309 | &vdev->fw_info_pa); | |
310 | if (!vdev->fw_info) | |
311 | return -ENOMEM; | |
312 | ||
313 | a0 = vdev->fw_info_pa; | |
314 | ||
315 | /* only get fw_info once and cache it */ | |
316 | err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait); | |
317 | } | |
318 | ||
319 | *fw_info = vdev->fw_info; | |
320 | ||
321 | return err; | |
322 | } | |
323 | ||
324 | int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size, | |
325 | void *value) | |
326 | { | |
327 | u64 a0, a1; | |
328 | int wait = 1000; | |
329 | int err; | |
330 | ||
331 | a0 = offset; | |
332 | a1 = size; | |
333 | ||
334 | err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait); | |
335 | ||
336 | switch (size) { | |
337 | case 1: *(u8 *)value = (u8)a0; break; | |
338 | case 2: *(u16 *)value = (u16)a0; break; | |
339 | case 4: *(u32 *)value = (u32)a0; break; | |
340 | case 8: *(u64 *)value = a0; break; | |
341 | default: BUG(); break; | |
342 | } | |
343 | ||
344 | return err; | |
345 | } | |
346 | ||
347 | int vnic_dev_stats_clear(struct vnic_dev *vdev) | |
348 | { | |
349 | u64 a0 = 0, a1 = 0; | |
350 | int wait = 1000; | |
351 | return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait); | |
352 | } | |
353 | ||
354 | int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) | |
355 | { | |
356 | u64 a0, a1; | |
357 | int wait = 1000; | |
358 | ||
359 | if (!vdev->stats) { | |
360 | vdev->stats = pci_alloc_consistent(vdev->pdev, | |
361 | sizeof(struct vnic_stats), &vdev->stats_pa); | |
362 | if (!vdev->stats) | |
363 | return -ENOMEM; | |
364 | } | |
365 | ||
366 | *stats = vdev->stats; | |
367 | a0 = vdev->stats_pa; | |
368 | a1 = sizeof(struct vnic_stats); | |
369 | ||
370 | return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait); | |
371 | } | |
372 | ||
373 | int vnic_dev_close(struct vnic_dev *vdev) | |
374 | { | |
375 | u64 a0 = 0, a1 = 0; | |
376 | int wait = 1000; | |
377 | return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait); | |
378 | } | |
379 | ||
380 | int vnic_dev_enable(struct vnic_dev *vdev) | |
381 | { | |
382 | u64 a0 = 0, a1 = 0; | |
383 | int wait = 1000; | |
384 | return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait); | |
385 | } | |
386 | ||
387 | int vnic_dev_disable(struct vnic_dev *vdev) | |
388 | { | |
389 | u64 a0 = 0, a1 = 0; | |
390 | int wait = 1000; | |
391 | return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait); | |
392 | } | |
393 | ||
394 | int vnic_dev_open(struct vnic_dev *vdev, int arg) | |
395 | { | |
396 | u64 a0 = (u32)arg, a1 = 0; | |
397 | int wait = 1000; | |
398 | return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait); | |
399 | } | |
400 | ||
401 | int vnic_dev_open_done(struct vnic_dev *vdev, int *done) | |
402 | { | |
403 | u64 a0 = 0, a1 = 0; | |
404 | int wait = 1000; | |
405 | int err; | |
406 | ||
407 | *done = 0; | |
408 | ||
409 | err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait); | |
410 | if (err) | |
411 | return err; | |
412 | ||
413 | *done = (a0 == 0); | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
418 | int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg) | |
419 | { | |
420 | u64 a0 = (u32)arg, a1 = 0; | |
421 | int wait = 1000; | |
422 | return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait); | |
423 | } | |
424 | ||
425 | int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done) | |
426 | { | |
427 | u64 a0 = 0, a1 = 0; | |
428 | int wait = 1000; | |
429 | int err; | |
430 | ||
431 | *done = 0; | |
432 | ||
433 | err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait); | |
434 | if (err) | |
435 | return err; | |
436 | ||
437 | *done = (a0 == 0); | |
438 | ||
439 | return 0; | |
440 | } | |
441 | ||
442 | int vnic_dev_hang_notify(struct vnic_dev *vdev) | |
443 | { | |
444 | u64 a0, a1; | |
445 | int wait = 1000; | |
446 | return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait); | |
447 | } | |
448 | ||
449 | int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr) | |
450 | { | |
451 | u64 a0, a1; | |
452 | int wait = 1000; | |
453 | int err, i; | |
454 | ||
455 | for (i = 0; i < ETH_ALEN; i++) | |
456 | mac_addr[i] = 0; | |
457 | ||
458 | err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); | |
459 | if (err) | |
460 | return err; | |
461 | ||
462 | for (i = 0; i < ETH_ALEN; i++) | |
463 | mac_addr[i] = ((u8 *)&a0)[i]; | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, | |
469 | int broadcast, int promisc, int allmulti) | |
470 | { | |
471 | u64 a0, a1 = 0; | |
472 | int wait = 1000; | |
473 | int err; | |
474 | ||
475 | a0 = (directed ? CMD_PFILTER_DIRECTED : 0) | | |
476 | (multicast ? CMD_PFILTER_MULTICAST : 0) | | |
477 | (broadcast ? CMD_PFILTER_BROADCAST : 0) | | |
478 | (promisc ? CMD_PFILTER_PROMISCUOUS : 0) | | |
479 | (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0); | |
480 | ||
481 | err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait); | |
482 | if (err) | |
483 | printk(KERN_ERR "Can't set packet filter\n"); | |
484 | } | |
485 | ||
486 | void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr) | |
487 | { | |
488 | u64 a0 = 0, a1 = 0; | |
489 | int wait = 1000; | |
490 | int err; | |
491 | int i; | |
492 | ||
493 | for (i = 0; i < ETH_ALEN; i++) | |
494 | ((u8 *)&a0)[i] = addr[i]; | |
495 | ||
496 | err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); | |
497 | if (err) | |
7c510e4b | 498 | printk(KERN_ERR "Can't add addr [%pM], %d\n", addr, err); |
01f2e4ea SF |
499 | } |
500 | ||
501 | void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr) | |
502 | { | |
503 | u64 a0 = 0, a1 = 0; | |
504 | int wait = 1000; | |
505 | int err; | |
506 | int i; | |
507 | ||
508 | for (i = 0; i < ETH_ALEN; i++) | |
509 | ((u8 *)&a0)[i] = addr[i]; | |
510 | ||
511 | err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait); | |
512 | if (err) | |
7c510e4b | 513 | printk(KERN_ERR "Can't del addr [%pM], %d\n", addr, err); |
01f2e4ea SF |
514 | } |
515 | ||
516 | int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr) | |
517 | { | |
518 | u64 a0, a1; | |
519 | int wait = 1000; | |
27372bf5 | 520 | int r; |
01f2e4ea SF |
521 | |
522 | if (!vdev->notify) { | |
523 | vdev->notify = pci_alloc_consistent(vdev->pdev, | |
524 | sizeof(struct vnic_devcmd_notify), | |
525 | &vdev->notify_pa); | |
526 | if (!vdev->notify) | |
527 | return -ENOMEM; | |
27372bf5 | 528 | memset(vdev->notify, 0, sizeof(struct vnic_devcmd_notify)); |
01f2e4ea SF |
529 | } |
530 | ||
531 | a0 = vdev->notify_pa; | |
532 | a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL; | |
533 | a1 += sizeof(struct vnic_devcmd_notify); | |
534 | ||
27372bf5 SF |
535 | r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); |
536 | vdev->notify_sz = (r == 0) ? (u32)a1 : 0; | |
537 | return r; | |
01f2e4ea SF |
538 | } |
539 | ||
540 | void vnic_dev_notify_unset(struct vnic_dev *vdev) | |
541 | { | |
542 | u64 a0, a1; | |
543 | int wait = 1000; | |
544 | ||
545 | a0 = 0; /* paddr = 0 to unset notify buffer */ | |
546 | a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */ | |
547 | a1 += sizeof(struct vnic_devcmd_notify); | |
548 | ||
549 | vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait); | |
27372bf5 | 550 | vdev->notify_sz = 0; |
01f2e4ea SF |
551 | } |
552 | ||
553 | static int vnic_dev_notify_ready(struct vnic_dev *vdev) | |
554 | { | |
555 | u32 *words; | |
27372bf5 | 556 | unsigned int nwords = vdev->notify_sz / 4; |
01f2e4ea SF |
557 | unsigned int i; |
558 | u32 csum; | |
559 | ||
27372bf5 | 560 | if (!vdev->notify || !vdev->notify_sz) |
01f2e4ea SF |
561 | return 0; |
562 | ||
563 | do { | |
564 | csum = 0; | |
27372bf5 | 565 | memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz); |
01f2e4ea SF |
566 | words = (u32 *)&vdev->notify_copy; |
567 | for (i = 1; i < nwords; i++) | |
568 | csum += words[i]; | |
569 | } while (csum != words[0]); | |
570 | ||
571 | return 1; | |
572 | } | |
573 | ||
574 | int vnic_dev_init(struct vnic_dev *vdev, int arg) | |
575 | { | |
576 | u64 a0 = (u32)arg, a1 = 0; | |
577 | int wait = 1000; | |
27372bf5 SF |
578 | int r = 0; |
579 | ||
580 | if (vnic_dev_capable(vdev, CMD_INIT)) | |
581 | r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait); | |
582 | else { | |
583 | vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait); | |
584 | if (a0 & CMD_INITF_DEFAULT_MAC) { | |
585 | // Emulate these for old CMD_INIT_v1 which | |
586 | // didn't pass a0 so no CMD_INITF_*. | |
587 | vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait); | |
588 | vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait); | |
589 | } | |
590 | } | |
591 | return r; | |
01f2e4ea SF |
592 | } |
593 | ||
594 | int vnic_dev_link_status(struct vnic_dev *vdev) | |
595 | { | |
596 | if (vdev->linkstatus) | |
597 | return *vdev->linkstatus; | |
598 | ||
599 | if (!vnic_dev_notify_ready(vdev)) | |
600 | return 0; | |
601 | ||
602 | return vdev->notify_copy.link_state; | |
603 | } | |
604 | ||
605 | u32 vnic_dev_port_speed(struct vnic_dev *vdev) | |
606 | { | |
607 | if (!vnic_dev_notify_ready(vdev)) | |
608 | return 0; | |
609 | ||
610 | return vdev->notify_copy.port_speed; | |
611 | } | |
612 | ||
613 | u32 vnic_dev_msg_lvl(struct vnic_dev *vdev) | |
614 | { | |
615 | if (!vnic_dev_notify_ready(vdev)) | |
616 | return 0; | |
617 | ||
618 | return vdev->notify_copy.msglvl; | |
619 | } | |
620 | ||
621 | u32 vnic_dev_mtu(struct vnic_dev *vdev) | |
622 | { | |
623 | if (!vnic_dev_notify_ready(vdev)) | |
624 | return 0; | |
625 | ||
626 | return vdev->notify_copy.mtu; | |
627 | } | |
628 | ||
629 | void vnic_dev_set_intr_mode(struct vnic_dev *vdev, | |
630 | enum vnic_dev_intr_mode intr_mode) | |
631 | { | |
632 | vdev->intr_mode = intr_mode; | |
633 | } | |
634 | ||
635 | enum vnic_dev_intr_mode vnic_dev_get_intr_mode( | |
636 | struct vnic_dev *vdev) | |
637 | { | |
638 | return vdev->intr_mode; | |
639 | } | |
640 | ||
641 | void vnic_dev_unregister(struct vnic_dev *vdev) | |
642 | { | |
643 | if (vdev) { | |
644 | if (vdev->notify) | |
645 | pci_free_consistent(vdev->pdev, | |
646 | sizeof(struct vnic_devcmd_notify), | |
647 | vdev->notify, | |
648 | vdev->notify_pa); | |
649 | if (vdev->linkstatus) | |
650 | pci_free_consistent(vdev->pdev, | |
651 | sizeof(u32), | |
652 | vdev->linkstatus, | |
653 | vdev->linkstatus_pa); | |
654 | if (vdev->stats) | |
655 | pci_free_consistent(vdev->pdev, | |
656 | sizeof(struct vnic_dev), | |
657 | vdev->stats, vdev->stats_pa); | |
658 | if (vdev->fw_info) | |
659 | pci_free_consistent(vdev->pdev, | |
660 | sizeof(struct vnic_devcmd_fw_info), | |
661 | vdev->fw_info, vdev->fw_info_pa); | |
662 | kfree(vdev); | |
663 | } | |
664 | } | |
665 | ||
666 | struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev, | |
667 | void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar) | |
668 | { | |
669 | if (!vdev) { | |
670 | vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC); | |
671 | if (!vdev) | |
672 | return NULL; | |
673 | } | |
674 | ||
675 | vdev->priv = priv; | |
676 | vdev->pdev = pdev; | |
677 | ||
678 | if (vnic_dev_discover_res(vdev, bar)) | |
679 | goto err_out; | |
680 | ||
681 | vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0); | |
682 | if (!vdev->devcmd) | |
683 | goto err_out; | |
684 | ||
685 | return vdev; | |
686 | ||
687 | err_out: | |
688 | vnic_dev_unregister(vdev); | |
689 | return NULL; | |
690 | } | |
691 | ||
27372bf5 | 692 |