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;
46 u32 notify_sz;
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
vnic_dev_priv(struct vnic_dev * vdev)60 void *vnic_dev_priv(struct vnic_dev *vdev)
61 {
62 return vdev->priv;
63 }
64
vnic_dev_discover_res(struct vnic_dev * vdev,struct vnic_dev_bar * bar)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
vnic_dev_get_res_count(struct vnic_dev * vdev,enum vnic_res_type type)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
vnic_dev_get_res(struct vnic_dev * vdev,enum vnic_res_type type,unsigned int index)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
vnic_dev_desc_ring_size(struct vnic_dev_ring * ring,unsigned int desc_count,unsigned int desc_size)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
vnic_dev_clear_desc_ring(struct vnic_dev_ring * ring)189 void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
190 {
191 memset(ring->descs, 0, ring->size);
192 }
193
vnic_dev_alloc_desc_ring(struct vnic_dev * vdev,struct vnic_dev_ring * ring,unsigned int desc_count,unsigned int desc_size)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
vnic_dev_free_desc_ring(struct vnic_dev * vdev,struct vnic_dev_ring * ring)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
vnic_dev_cmd(struct vnic_dev * vdev,enum vnic_devcmd_cmd cmd,u64 * a0,u64 * a1,int wait)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;
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) {
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;
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
vnic_dev_capable(struct vnic_dev * vdev,enum vnic_devcmd_cmd cmd)288 static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
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
vnic_dev_fw_info(struct vnic_dev * vdev,struct vnic_devcmd_fw_info ** fw_info)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
vnic_dev_spec(struct vnic_dev * vdev,unsigned int offset,unsigned int size,void * value)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
vnic_dev_stats_clear(struct vnic_dev * vdev)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
vnic_dev_stats_dump(struct vnic_dev * vdev,struct vnic_stats ** stats)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
vnic_dev_close(struct vnic_dev * vdev)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
vnic_dev_enable(struct vnic_dev * vdev)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
vnic_dev_disable(struct vnic_dev * vdev)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
vnic_dev_open(struct vnic_dev * vdev,int arg)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
vnic_dev_open_done(struct vnic_dev * vdev,int * done)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
vnic_dev_soft_reset(struct vnic_dev * vdev,int arg)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
vnic_dev_soft_reset_done(struct vnic_dev * vdev,int * done)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
vnic_dev_hang_notify(struct vnic_dev * vdev)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
vnic_dev_mac_addr(struct vnic_dev * vdev,u8 * mac_addr)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
vnic_dev_packet_filter(struct vnic_dev * vdev,int directed,int multicast,int broadcast,int promisc,int allmulti)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
vnic_dev_add_addr(struct vnic_dev * vdev,u8 * addr)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)
498 printk(KERN_ERR "Can't add addr [%pM], %d\n", addr, err);
499 }
500
vnic_dev_del_addr(struct vnic_dev * vdev,u8 * addr)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)
513 printk(KERN_ERR "Can't del addr [%pM], %d\n", addr, err);
514 }
515
vnic_dev_notify_set(struct vnic_dev * vdev,u16 intr)516 int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
517 {
518 u64 a0, a1;
519 int wait = 1000;
520 int r;
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;
528 memset(vdev->notify, 0, sizeof(struct vnic_devcmd_notify));
529 }
530
531 a0 = vdev->notify_pa;
532 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
533 a1 += sizeof(struct vnic_devcmd_notify);
534
535 r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
536 vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
537 return r;
538 }
539
vnic_dev_notify_unset(struct vnic_dev * vdev)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);
550 vdev->notify_sz = 0;
551 }
552
vnic_dev_notify_ready(struct vnic_dev * vdev)553 static int vnic_dev_notify_ready(struct vnic_dev *vdev)
554 {
555 u32 *words;
556 unsigned int nwords = vdev->notify_sz / 4;
557 unsigned int i;
558 u32 csum;
559
560 if (!vdev->notify || !vdev->notify_sz)
561 return 0;
562
563 do {
564 csum = 0;
565 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
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
vnic_dev_init(struct vnic_dev * vdev,int arg)574 int vnic_dev_init(struct vnic_dev *vdev, int arg)
575 {
576 u64 a0 = (u32)arg, a1 = 0;
577 int wait = 1000;
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;
592 }
593
vnic_dev_link_status(struct vnic_dev * vdev)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
vnic_dev_port_speed(struct vnic_dev * vdev)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
vnic_dev_msg_lvl(struct vnic_dev * vdev)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
vnic_dev_mtu(struct vnic_dev * vdev)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
vnic_dev_set_intr_mode(struct vnic_dev * vdev,enum vnic_dev_intr_mode intr_mode)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
vnic_dev_get_intr_mode(struct vnic_dev * vdev)635 enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
636 struct vnic_dev *vdev)
637 {
638 return vdev->intr_mode;
639 }
640
vnic_dev_unregister(struct vnic_dev * vdev)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
vnic_dev_register(struct vnic_dev * vdev,void * priv,struct pci_dev * pdev,struct vnic_dev_bar * bar)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
692
693