1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
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
32enum vnic_proxy_type {
33 PROXY_NONE,
34 PROXY_BY_BDF,
35};
36
37struct vnic_res {
38 void __iomem *vaddr;
39 dma_addr_t bus_addr;
40 unsigned int count;
41};
42
43struct 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;
52 u32 notify_sz;
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;
58 enum vnic_proxy_type proxy;
59 u32 proxy_index;
60 u64 args[VNIC_DEVCMD_NARGS];
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
68void *vnic_dev_priv(struct vnic_dev *vdev)
69{
70 return vdev->priv;
71}
72
73static int vnic_dev_discover_res(struct vnic_dev *vdev,
74 struct vnic_dev_bar *bar, unsigned int num_bars)
75{
76 struct vnic_resource_header __iomem *rh;
77 struct mgmt_barmap_hdr __iomem *mrh;
78 struct vnic_resource __iomem *r;
79 u8 type;
80
81 if (num_bars == 0)
82 return -EINVAL;
83
84 if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
85 pr_err("vNIC BAR0 res hdr length error\n");
86 return -EINVAL;
87 }
88
89 rh = bar->vaddr;
90 mrh = bar->vaddr;
91 if (!rh) {
92 pr_err("vNIC BAR0 res hdr not mem-mapped\n");
93 return -EINVAL;
94 }
95
96
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",
103 VNIC_RES_MAGIC, VNIC_RES_VERSION,
104 MGMTVNIC_MAGIC, MGMTVNIC_VERSION,
105 ioread32(&rh->magic), ioread32(&rh->version));
106 return -EINVAL;
107 }
108 }
109
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
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
125 if (bar_num >= num_bars)
126 continue;
127
128 if (!bar[bar_num].len || !bar[bar_num].vaddr)
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
137 len = count * VNIC_RES_STRIDE;
138 if (len + bar_offset > bar[bar_num].len) {
139 pr_err("vNIC BAR0 resource %d "
140 "out-of-bounds, offset 0x%x + "
141 "size 0x%x > bar len 0x%lx\n",
142 type, bar_offset,
143 len,
144 bar[bar_num].len);
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;
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;
160 }
161
162 return 0;
163}
164
165unsigned 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
171void __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
189static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
190 unsigned int desc_count, unsigned int desc_size)
191{
192
193
194
195
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
216void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
217{
218 memset(ring->descs, 0, ring->size);
219}
220
221int 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) {
231 pr_err("Failed to allocate ring (size=%d), aborting\n",
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
248void 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
259static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
260 int wait)
261{
262 struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
263 unsigned int i;
264 int delay;
265 u32 status;
266 int err;
267
268 status = ioread32(&devcmd->status);
269 if (status == 0xFFFFFFFF) {
270
271 return -ENODEV;
272 }
273 if (status & STAT_BUSY) {
274 pr_err("Busy devcmd %d\n", _CMD_N(cmd));
275 return -EBUSY;
276 }
277
278 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
279 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
280 writeq(vdev->args[i], &devcmd->args[i]);
281 wmb();
282 }
283
284 iowrite32(cmd, &devcmd->cmd);
285
286 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
287 return 0;
288
289 for (delay = 0; delay < wait; delay++) {
290
291 udelay(100);
292
293 status = ioread32(&devcmd->status);
294 if (status == 0xFFFFFFFF) {
295
296 return -ENODEV;
297 }
298
299 if (!(status & STAT_BUSY)) {
300
301 if (status & STAT_ERROR) {
302 err = (int)readq(&devcmd->args[0]);
303 if (err != ERR_ECMDUNKNOWN ||
304 cmd != CMD_CAPABILITY)
305 pr_err("Error %d devcmd %d\n",
306 err, _CMD_N(cmd));
307 return err;
308 }
309
310 if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
311 rmb();
312 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
313 vdev->args[i] = readq(&devcmd->args[i]);
314 }
315
316 return 0;
317 }
318 }
319
320 pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
321 return -ETIMEDOUT;
322}
323
324static 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;
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
356static 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
372int 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
386static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
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
397int 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
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
422int vnic_dev_hw_version(struct vnic_dev *vdev, enum vnic_dev_hw_version *hw_ver)
423{
424 struct vnic_devcmd_fw_info *fw_info;
425 int err;
426
427 err = vnic_dev_fw_info(vdev, &fw_info);
428 if (err)
429 return err;
430
431 if (strncmp(fw_info->hw_version, "A1", sizeof("A1")) == 0)
432 *hw_ver = VNIC_DEV_HW_VER_A1;
433 else if (strncmp(fw_info->hw_version, "A2", sizeof("A2")) == 0)
434 *hw_ver = VNIC_DEV_HW_VER_A2;
435 else
436 *hw_ver = VNIC_DEV_HW_VER_UNKNOWN;
437
438 return 0;
439}
440
441int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
442 void *value)
443{
444 u64 a0, a1;
445 int wait = 1000;
446 int err;
447
448 a0 = offset;
449 a1 = size;
450
451 err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
452
453 switch (size) {
454 case 1: *(u8 *)value = (u8)a0; break;
455 case 2: *(u16 *)value = (u16)a0; break;
456 case 4: *(u32 *)value = (u32)a0; break;
457 case 8: *(u64 *)value = a0; break;
458 default: BUG(); break;
459 }
460
461 return err;
462}
463
464int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
465{
466 u64 a0, a1;
467 int wait = 1000;
468
469 if (!vdev->stats) {
470 vdev->stats = pci_alloc_consistent(vdev->pdev,
471 sizeof(struct vnic_stats), &vdev->stats_pa);
472 if (!vdev->stats)
473 return -ENOMEM;
474 }
475
476 *stats = vdev->stats;
477 a0 = vdev->stats_pa;
478 a1 = sizeof(struct vnic_stats);
479
480 return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
481}
482
483int vnic_dev_close(struct vnic_dev *vdev)
484{
485 u64 a0 = 0, a1 = 0;
486 int wait = 1000;
487 return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
488}
489
490int vnic_dev_enable_wait(struct vnic_dev *vdev)
491{
492 u64 a0 = 0, a1 = 0;
493 int wait = 1000;
494 int err;
495
496 err = vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
497 if (err == ERR_ECMDUNKNOWN)
498 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
499
500 return err;
501}
502
503int vnic_dev_disable(struct vnic_dev *vdev)
504{
505 u64 a0 = 0, a1 = 0;
506 int wait = 1000;
507 return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
508}
509
510int vnic_dev_open(struct vnic_dev *vdev, int arg)
511{
512 u64 a0 = (u32)arg, a1 = 0;
513 int wait = 1000;
514 return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
515}
516
517int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
518{
519 u64 a0 = 0, a1 = 0;
520 int wait = 1000;
521 int err;
522
523 *done = 0;
524
525 err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
526 if (err)
527 return err;
528
529 *done = (a0 == 0);
530
531 return 0;
532}
533
534static int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
535{
536 u64 a0 = (u32)arg, a1 = 0;
537 int wait = 1000;
538 return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
539}
540
541static int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
542{
543 u64 a0 = 0, a1 = 0;
544 int wait = 1000;
545 int err;
546
547 *done = 0;
548
549 err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
550 if (err)
551 return err;
552
553 *done = (a0 == 0);
554
555 return 0;
556}
557
558int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg)
559{
560 u64 a0 = (u32)arg, a1 = 0;
561 int wait = 1000;
562 int err;
563
564 err = vnic_dev_cmd(vdev, CMD_HANG_RESET, &a0, &a1, wait);
565 if (err == ERR_ECMDUNKNOWN) {
566 err = vnic_dev_soft_reset(vdev, arg);
567 if (err)
568 return err;
569
570 return vnic_dev_init(vdev, 0);
571 }
572
573 return err;
574}
575
576int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done)
577{
578 u64 a0 = 0, a1 = 0;
579 int wait = 1000;
580 int err;
581
582 *done = 0;
583
584 err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS, &a0, &a1, wait);
585 if (err) {
586 if (err == ERR_ECMDUNKNOWN)
587 return vnic_dev_soft_reset_done(vdev, done);
588 return err;
589 }
590
591 *done = (a0 == 0);
592
593 return 0;
594}
595
596int vnic_dev_hang_notify(struct vnic_dev *vdev)
597{
598 u64 a0, a1;
599 int wait = 1000;
600 return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
601}
602
603int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
604{
605 u64 a0, a1;
606 int wait = 1000;
607 int err, i;
608
609 for (i = 0; i < ETH_ALEN; i++)
610 mac_addr[i] = 0;
611
612 err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
613 if (err)
614 return err;
615
616 for (i = 0; i < ETH_ALEN; i++)
617 mac_addr[i] = ((u8 *)&a0)[i];
618
619 return 0;
620}
621
622int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
623 int broadcast, int promisc, int allmulti)
624{
625 u64 a0, a1 = 0;
626 int wait = 1000;
627 int err;
628
629 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
630 (multicast ? CMD_PFILTER_MULTICAST : 0) |
631 (broadcast ? CMD_PFILTER_BROADCAST : 0) |
632 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
633 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
634
635 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
636 if (err)
637 pr_err("Can't set packet filter\n");
638
639 return err;
640}
641
642int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
643{
644 u64 a0 = 0, a1 = 0;
645 int wait = 1000;
646 int err;
647 int i;
648
649 for (i = 0; i < ETH_ALEN; i++)
650 ((u8 *)&a0)[i] = addr[i];
651
652 err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
653 if (err)
654 pr_err("Can't add addr [%pM], %d\n", addr, err);
655
656 return err;
657}
658
659int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
660{
661 u64 a0 = 0, a1 = 0;
662 int wait = 1000;
663 int err;
664 int i;
665
666 for (i = 0; i < ETH_ALEN; i++)
667 ((u8 *)&a0)[i] = addr[i];
668
669 err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
670 if (err)
671 pr_err("Can't del addr [%pM], %d\n", addr, err);
672
673 return err;
674}
675
676int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
677 u8 ig_vlan_rewrite_mode)
678{
679 u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
680 int wait = 1000;
681 int err;
682
683 err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait);
684 if (err == ERR_ECMDUNKNOWN)
685 return 0;
686
687 return err;
688}
689
690static int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
691 void *notify_addr, dma_addr_t notify_pa, u16 intr)
692{
693 u64 a0, a1;
694 int wait = 1000;
695 int r;
696
697 memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
698 vdev->notify = notify_addr;
699 vdev->notify_pa = notify_pa;
700
701 a0 = (u64)notify_pa;
702 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
703 a1 += sizeof(struct vnic_devcmd_notify);
704
705 r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
706 vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
707 return r;
708}
709
710int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
711{
712 void *notify_addr;
713 dma_addr_t notify_pa;
714
715 if (vdev->notify || vdev->notify_pa) {
716 pr_err("notify block %p still allocated", vdev->notify);
717 return -EINVAL;
718 }
719
720 notify_addr = pci_alloc_consistent(vdev->pdev,
721 sizeof(struct vnic_devcmd_notify),
722 ¬ify_pa);
723 if (!notify_addr)
724 return -ENOMEM;
725
726 return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
727}
728
729static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
730{
731 u64 a0, a1;
732 int wait = 1000;
733 int err;
734
735 a0 = 0;
736 a1 = 0x0000ffff00000000ULL;
737 a1 += sizeof(struct vnic_devcmd_notify);
738
739 err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
740 vdev->notify = NULL;
741 vdev->notify_pa = 0;
742 vdev->notify_sz = 0;
743
744 return err;
745}
746
747int vnic_dev_notify_unset(struct vnic_dev *vdev)
748{
749 if (vdev->notify) {
750 pci_free_consistent(vdev->pdev,
751 sizeof(struct vnic_devcmd_notify),
752 vdev->notify,
753 vdev->notify_pa);
754 }
755
756 return vnic_dev_notify_unsetcmd(vdev);
757}
758
759static int vnic_dev_notify_ready(struct vnic_dev *vdev)
760{
761 u32 *words;
762 unsigned int nwords = vdev->notify_sz / 4;
763 unsigned int i;
764 u32 csum;
765
766 if (!vdev->notify || !vdev->notify_sz)
767 return 0;
768
769 do {
770 csum = 0;
771 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
772 words = (u32 *)&vdev->notify_copy;
773 for (i = 1; i < nwords; i++)
774 csum += words[i];
775 } while (csum != words[0]);
776
777 return 1;
778}
779
780int vnic_dev_init(struct vnic_dev *vdev, int arg)
781{
782 u64 a0 = (u32)arg, a1 = 0;
783 int wait = 1000;
784 int r = 0;
785
786 if (vnic_dev_capable(vdev, CMD_INIT))
787 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
788 else {
789 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
790 if (a0 & CMD_INITF_DEFAULT_MAC) {
791
792
793
794 vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
795 vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
796 }
797 }
798 return r;
799}
800
801int vnic_dev_init_done(struct vnic_dev *vdev, int *done, int *err)
802{
803 u64 a0 = 0, a1 = 0;
804 int wait = 1000;
805 int ret;
806
807 *done = 0;
808
809 ret = vnic_dev_cmd(vdev, CMD_INIT_STATUS, &a0, &a1, wait);
810 if (ret)
811 return ret;
812
813 *done = (a0 == 0);
814
815 *err = (a0 == 0) ? (int)a1:0;
816
817 return 0;
818}
819
820int vnic_dev_init_prov(struct vnic_dev *vdev, u8 *buf, u32 len)
821{
822 u64 a0, a1 = len;
823 int wait = 1000;
824 dma_addr_t prov_pa;
825 void *prov_buf;
826 int ret;
827
828 prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa);
829 if (!prov_buf)
830 return -ENOMEM;
831
832 memcpy(prov_buf, buf, len);
833
834 a0 = prov_pa;
835
836 ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO, &a0, &a1, wait);
837
838 pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa);
839
840 return ret;
841}
842
843int vnic_dev_deinit(struct vnic_dev *vdev)
844{
845 u64 a0 = 0, a1 = 0;
846 int wait = 1000;
847
848 return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
849}
850
851int vnic_dev_link_status(struct vnic_dev *vdev)
852{
853 if (!vnic_dev_notify_ready(vdev))
854 return 0;
855
856 return vdev->notify_copy.link_state;
857}
858
859u32 vnic_dev_port_speed(struct vnic_dev *vdev)
860{
861 if (!vnic_dev_notify_ready(vdev))
862 return 0;
863
864 return vdev->notify_copy.port_speed;
865}
866
867u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
868{
869 if (!vnic_dev_notify_ready(vdev))
870 return 0;
871
872 return vdev->notify_copy.msglvl;
873}
874
875u32 vnic_dev_mtu(struct vnic_dev *vdev)
876{
877 if (!vnic_dev_notify_ready(vdev))
878 return 0;
879
880 return vdev->notify_copy.mtu;
881}
882
883void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
884 enum vnic_dev_intr_mode intr_mode)
885{
886 vdev->intr_mode = intr_mode;
887}
888
889enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
890 struct vnic_dev *vdev)
891{
892 return vdev->intr_mode;
893}
894
895void vnic_dev_unregister(struct vnic_dev *vdev)
896{
897 if (vdev) {
898 if (vdev->notify)
899 pci_free_consistent(vdev->pdev,
900 sizeof(struct vnic_devcmd_notify),
901 vdev->notify,
902 vdev->notify_pa);
903 if (vdev->stats)
904 pci_free_consistent(vdev->pdev,
905 sizeof(struct vnic_stats),
906 vdev->stats, vdev->stats_pa);
907 if (vdev->fw_info)
908 pci_free_consistent(vdev->pdev,
909 sizeof(struct vnic_devcmd_fw_info),
910 vdev->fw_info, vdev->fw_info_pa);
911 kfree(vdev);
912 }
913}
914
915struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
916 void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
917 unsigned int num_bars)
918{
919 if (!vdev) {
920 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
921 if (!vdev)
922 return NULL;
923 }
924
925 vdev->priv = priv;
926 vdev->pdev = pdev;
927
928 if (vnic_dev_discover_res(vdev, bar, num_bars))
929 goto err_out;
930
931 vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
932 if (!vdev->devcmd)
933 goto err_out;
934
935 return vdev;
936
937err_out:
938 vnic_dev_unregister(vdev);
939 return NULL;
940}
941
942
943
