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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_wq.h"
31#include "vnic_stats.h"
32#include "enic.h"
33
34#define VNIC_MAX_RES_HDR_SIZE \
35 (sizeof(struct vnic_resource_header) + \
36 sizeof(struct vnic_resource) * RES_TYPE_MAX)
37#define VNIC_RES_STRIDE 128
38
39void *vnic_dev_priv(struct vnic_dev *vdev)
40{
41 return vdev->priv;
42}
43
44static int vnic_dev_discover_res(struct vnic_dev *vdev,
45 struct vnic_dev_bar *bar, unsigned int num_bars)
46{
47 struct vnic_resource_header __iomem *rh;
48 struct mgmt_barmap_hdr __iomem *mrh;
49 struct vnic_resource __iomem *r;
50 u8 type;
51
52 if (num_bars == 0)
53 return -EINVAL;
54
55 if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
56 vdev_err(vdev, "vNIC BAR0 res hdr length error\n");
57 return -EINVAL;
58 }
59
60 rh = bar->vaddr;
61 mrh = bar->vaddr;
62 if (!rh) {
63 vdev_err(vdev, "vNIC BAR0 res hdr not mem-mapped\n");
64 return -EINVAL;
65 }
66
67
68 if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) ||
69 (ioread32(&rh->version) != VNIC_RES_VERSION)) {
70 if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) ||
71 (ioread32(&mrh->version) != MGMTVNIC_VERSION)) {
72 vdev_err(vdev, "vNIC BAR0 res magic/version error exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n",
73 VNIC_RES_MAGIC, VNIC_RES_VERSION,
74 MGMTVNIC_MAGIC, MGMTVNIC_VERSION,
75 ioread32(&rh->magic), ioread32(&rh->version));
76 return -EINVAL;
77 }
78 }
79
80 if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC)
81 r = (struct vnic_resource __iomem *)(mrh + 1);
82 else
83 r = (struct vnic_resource __iomem *)(rh + 1);
84
85
86 while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
87
88 u8 bar_num = ioread8(&r->bar);
89 u32 bar_offset = ioread32(&r->bar_offset);
90 u32 count = ioread32(&r->count);
91 u32 len;
92
93 r++;
94
95 if (bar_num >= num_bars)
96 continue;
97
98 if (!bar[bar_num].len || !bar[bar_num].vaddr)
99 continue;
100
101 switch (type) {
102 case RES_TYPE_WQ:
103 case RES_TYPE_RQ:
104 case RES_TYPE_CQ:
105 case RES_TYPE_INTR_CTRL:
106
107 len = count * VNIC_RES_STRIDE;
108 if (len + bar_offset > bar[bar_num].len) {
109 vdev_err(vdev, "vNIC BAR0 resource %d out-of-bounds, offset 0x%x + size 0x%x > bar len 0x%lx\n",
110 type, bar_offset, len,
111 bar[bar_num].len);
112 return -EINVAL;
113 }
114 break;
115 case RES_TYPE_INTR_PBA_LEGACY:
116 case RES_TYPE_DEVCMD:
117 case RES_TYPE_DEVCMD2:
118 len = count;
119 break;
120 default:
121 continue;
122 }
123
124 vdev->res[type].count = count;
125 vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
126 bar_offset;
127 vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
128 }
129
130 return 0;
131}
132
133unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
134 enum vnic_res_type type)
135{
136 return vdev->res[type].count;
137}
138EXPORT_SYMBOL(vnic_dev_get_res_count);
139
140void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
141 unsigned int index)
142{
143 if (!vdev->res[type].vaddr)
144 return NULL;
145
146 switch (type) {
147 case RES_TYPE_WQ:
148 case RES_TYPE_RQ:
149 case RES_TYPE_CQ:
150 case RES_TYPE_INTR_CTRL:
151 return (char __iomem *)vdev->res[type].vaddr +
152 index * VNIC_RES_STRIDE;
153 default:
154 return (char __iomem *)vdev->res[type].vaddr;
155 }
156}
157EXPORT_SYMBOL(vnic_dev_get_res);
158
159static unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
160 unsigned int desc_count, unsigned int desc_size)
161{
162
163
164
165
166
167
168 unsigned int count_align = 32;
169 unsigned int desc_align = 16;
170
171 ring->base_align = 512;
172
173 if (desc_count == 0)
174 desc_count = 4096;
175
176 ring->desc_count = ALIGN(desc_count, count_align);
177
178 ring->desc_size = ALIGN(desc_size, desc_align);
179
180 ring->size = ring->desc_count * ring->desc_size;
181 ring->size_unaligned = ring->size + ring->base_align;
182
183 return ring->size_unaligned;
184}
185
186void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
187{
188 memset(ring->descs, 0, ring->size);
189}
190
191int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
192 unsigned int desc_count, unsigned int desc_size)
193{
194 vnic_dev_desc_ring_size(ring, desc_count, desc_size);
195
196 ring->descs_unaligned = dma_alloc_coherent(&vdev->pdev->dev,
197 ring->size_unaligned,
198 &ring->base_addr_unaligned,
199 GFP_KERNEL);
200
201 if (!ring->descs_unaligned) {
202 vdev_err(vdev, "Failed to allocate ring (size=%d), aborting\n",
203 (int)ring->size);
204 return -ENOMEM;
205 }
206
207 ring->base_addr = ALIGN(ring->base_addr_unaligned,
208 ring->base_align);
209 ring->descs = (u8 *)ring->descs_unaligned +
210 (ring->base_addr - ring->base_addr_unaligned);
211
212 vnic_dev_clear_desc_ring(ring);
213
214 ring->desc_avail = ring->desc_count - 1;
215
216 return 0;
217}
218
219void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
220{
221 if (ring->descs) {
222 dma_free_coherent(&vdev->pdev->dev, ring->size_unaligned,
223 ring->descs_unaligned,
224 ring->base_addr_unaligned);
225 ring->descs = NULL;
226 }
227}
228
229static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
230 int wait)
231{
232 struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
233 unsigned int i;
234 int delay;
235 u32 status;
236 int err;
237
238 status = ioread32(&devcmd->status);
239 if (status == 0xFFFFFFFF) {
240
241 return -ENODEV;
242 }
243 if (status & STAT_BUSY) {
244 vdev_neterr(vdev, "Busy devcmd %d\n", _CMD_N(cmd));
245 return -EBUSY;
246 }
247
248 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
249 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
250 writeq(vdev->args[i], &devcmd->args[i]);
251 wmb();
252 }
253
254 iowrite32(cmd, &devcmd->cmd);
255
256 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
257 return 0;
258
259 for (delay = 0; delay < wait; delay++) {
260
261 udelay(100);
262
263 status = ioread32(&devcmd->status);
264 if (status == 0xFFFFFFFF) {
265
266 return -ENODEV;
267 }
268
269 if (!(status & STAT_BUSY)) {
270
271 if (status & STAT_ERROR) {
272 err = (int)readq(&devcmd->args[0]);
273 if (err == ERR_EINVAL &&
274 cmd == CMD_CAPABILITY)
275 return -err;
276 if (err != ERR_ECMDUNKNOWN ||
277 cmd != CMD_CAPABILITY)
278 vdev_neterr(vdev, "Error %d devcmd %d\n",
279 err, _CMD_N(cmd));
280 return -err;
281 }
282
283 if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
284 rmb();
285 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
286 vdev->args[i] = readq(&devcmd->args[i]);
287 }
288
289 return 0;
290 }
291 }
292
293 vdev_neterr(vdev, "Timedout devcmd %d\n", _CMD_N(cmd));
294 return -ETIMEDOUT;
295}
296
297static int _vnic_dev_cmd2(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
298 int wait)
299{
300 struct devcmd2_controller *dc2c = vdev->devcmd2;
301 struct devcmd2_result *result;
302 u8 color;
303 unsigned int i;
304 int delay, err;
305 u32 fetch_index, new_posted;
306 u32 posted = dc2c->posted;
307
308 fetch_index = ioread32(&dc2c->wq_ctrl->fetch_index);
309
310 if (fetch_index == 0xFFFFFFFF)
311 return -ENODEV;
312
313 new_posted = (posted + 1) % DEVCMD2_RING_SIZE;
314
315 if (new_posted == fetch_index) {
316 vdev_neterr(vdev, "devcmd2 %d: wq is full. fetch index: %u, posted index: %u\n",
317 _CMD_N(cmd), fetch_index, posted);
318 return -EBUSY;
319 }
320 dc2c->cmd_ring[posted].cmd = cmd;
321 dc2c->cmd_ring[posted].flags = 0;
322
323 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
324 dc2c->cmd_ring[posted].flags |= DEVCMD2_FNORESULT;
325 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE)
326 for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
327 dc2c->cmd_ring[posted].args[i] = vdev->args[i];
328
329
330
331
332
333 wmb();
334 iowrite32(new_posted, &dc2c->wq_ctrl->posted_index);
335 dc2c->posted = new_posted;
336
337 if (dc2c->cmd_ring[posted].flags & DEVCMD2_FNORESULT)
338 return 0;
339
340 result = dc2c->result + dc2c->next_result;
341 color = dc2c->color;
342
343 dc2c->next_result++;
344 if (dc2c->next_result == dc2c->result_size) {
345 dc2c->next_result = 0;
346 dc2c->color = dc2c->color ? 0 : 1;
347 }
348
349 for (delay = 0; delay < wait; delay++) {
350 if (result->color == color) {
351 if (result->error) {
352 err = result->error;
353 if (err != ERR_ECMDUNKNOWN ||
354 cmd != CMD_CAPABILITY)
355 vdev_neterr(vdev, "Error %d devcmd %d\n",
356 err, _CMD_N(cmd));
357 return -err;
358 }
359 if (_CMD_DIR(cmd) & _CMD_DIR_READ)
360 for (i = 0; i < VNIC_DEVCMD2_NARGS; i++)
361 vdev->args[i] = result->results[i];
362
363 return 0;
364 }
365 udelay(100);
366 }
367
368 vdev_neterr(vdev, "devcmd %d timed out\n", _CMD_N(cmd));
369
370 return -ETIMEDOUT;
371}
372
373static int vnic_dev_init_devcmd1(struct vnic_dev *vdev)
374{
375 vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
376 if (!vdev->devcmd)
377 return -ENODEV;
378 vdev->devcmd_rtn = _vnic_dev_cmd;
379
380 return 0;
381}
382
383static int vnic_dev_init_devcmd2(struct vnic_dev *vdev)
384{
385 int err;
386 unsigned int fetch_index;
387
388 if (vdev->devcmd2)
389 return 0;
390
391 vdev->devcmd2 = kzalloc(sizeof(*vdev->devcmd2), GFP_KERNEL);
392 if (!vdev->devcmd2)
393 return -ENOMEM;
394
395 vdev->devcmd2->color = 1;
396 vdev->devcmd2->result_size = DEVCMD2_RING_SIZE;
397 err = enic_wq_devcmd2_alloc(vdev, &vdev->devcmd2->wq, DEVCMD2_RING_SIZE,
398 DEVCMD2_DESC_SIZE);
399 if (err)
400 goto err_free_devcmd2;
401
402 fetch_index = ioread32(&vdev->devcmd2->wq.ctrl->fetch_index);
403 if (fetch_index == 0xFFFFFFFF) {
404 vdev_err(vdev, "Fatal error in devcmd2 init - hardware surprise removal\n");
405 err = -ENODEV;
406 goto err_free_wq;
407 }
408
409 enic_wq_init_start(&vdev->devcmd2->wq, 0, fetch_index, fetch_index, 0,
410 0);
411 vdev->devcmd2->posted = fetch_index;
412 vnic_wq_enable(&vdev->devcmd2->wq);
413
414 err = vnic_dev_alloc_desc_ring(vdev, &vdev->devcmd2->results_ring,
415 DEVCMD2_RING_SIZE, DEVCMD2_DESC_SIZE);
416 if (err)
417 goto err_disable_wq;
418
419 vdev->devcmd2->result = vdev->devcmd2->results_ring.descs;
420 vdev->devcmd2->cmd_ring = vdev->devcmd2->wq.ring.descs;
421 vdev->devcmd2->wq_ctrl = vdev->devcmd2->wq.ctrl;
422 vdev->args[0] = (u64)vdev->devcmd2->results_ring.base_addr |
423 VNIC_PADDR_TARGET;
424 vdev->args[1] = DEVCMD2_RING_SIZE;
425
426 err = _vnic_dev_cmd2(vdev, CMD_INITIALIZE_DEVCMD2, 1000);
427 if (err)
428 goto err_free_desc_ring;
429
430 vdev->devcmd_rtn = _vnic_dev_cmd2;
431
432 return 0;
433
434err_free_desc_ring:
435 vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring);
436err_disable_wq:
437 vnic_wq_disable(&vdev->devcmd2->wq);
438err_free_wq:
439 vnic_wq_free(&vdev->devcmd2->wq);
440err_free_devcmd2:
441 kfree(vdev->devcmd2);
442 vdev->devcmd2 = NULL;
443
444 return err;
445}
446
447static void vnic_dev_deinit_devcmd2(struct vnic_dev *vdev)
448{
449 vnic_dev_free_desc_ring(vdev, &vdev->devcmd2->results_ring);
450 vnic_wq_disable(&vdev->devcmd2->wq);
451 vnic_wq_free(&vdev->devcmd2->wq);
452 kfree(vdev->devcmd2);
453}
454
455static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
456 enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
457 u64 *a0, u64 *a1, int wait)
458{
459 u32 status;
460 int err;
461
462 memset(vdev->args, 0, sizeof(vdev->args));
463
464 vdev->args[0] = vdev->proxy_index;
465 vdev->args[1] = cmd;
466 vdev->args[2] = *a0;
467 vdev->args[3] = *a1;
468
469 err = vdev->devcmd_rtn(vdev, proxy_cmd, wait);
470 if (err)
471 return err;
472
473 status = (u32)vdev->args[0];
474 if (status & STAT_ERROR) {
475 err = (int)vdev->args[1];
476 if (err != ERR_ECMDUNKNOWN ||
477 cmd != CMD_CAPABILITY)
478 vdev_neterr(vdev, "Error %d proxy devcmd %d\n",
479 err, _CMD_N(cmd));
480 return err;
481 }
482
483 *a0 = vdev->args[1];
484 *a1 = vdev->args[2];
485
486 return 0;
487}
488
489static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
490 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
491{
492 int err;
493
494 vdev->args[0] = *a0;
495 vdev->args[1] = *a1;
496
497 err = vdev->devcmd_rtn(vdev, cmd, wait);
498
499 *a0 = vdev->args[0];
500 *a1 = vdev->args[1];
501
502 return err;
503}
504
505void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index)
506{
507 vdev->proxy = PROXY_BY_INDEX;
508 vdev->proxy_index = index;
509}
510
511void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev)
512{
513 vdev->proxy = PROXY_NONE;
514 vdev->proxy_index = 0;
515}
516
517int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
518 u64 *a0, u64 *a1, int wait)
519{
520 memset(vdev->args, 0, sizeof(vdev->args));
521
522 switch (vdev->proxy) {
523 case PROXY_BY_INDEX:
524 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
525 a0, a1, wait);
526 case PROXY_BY_BDF:
527 return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
528 a0, a1, wait);
529 case PROXY_NONE:
530 default:
531 return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
532 }
533}
534
535static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
536{
537 u64 a0 = (u32)cmd, a1 = 0;
538 int wait = 1000;
539 int err;
540
541 err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
542
543 return !(err || a0);
544}
545
546int vnic_dev_fw_info(struct vnic_dev *vdev,
547 struct vnic_devcmd_fw_info **fw_info)
548{
549 u64 a0, a1 = 0;
550 int wait = 1000;
551 int err = 0;
552
553 if (!vdev->fw_info) {
554 vdev->fw_info = dma_alloc_coherent(&vdev->pdev->dev,
555 sizeof(struct vnic_devcmd_fw_info),
556 &vdev->fw_info_pa, GFP_ATOMIC);
557 if (!vdev->fw_info)
558 return -ENOMEM;
559
560 a0 = vdev->fw_info_pa;
561 a1 = sizeof(struct vnic_devcmd_fw_info);
562
563
564 if (vnic_dev_capable(vdev, CMD_MCPU_FW_INFO))
565 err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO,
566 &a0, &a1, wait);
567 else
568 err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO_OLD,
569 &a0, &a1, wait);
570 }
571
572 *fw_info = vdev->fw_info;
573
574 return err;
575}
576
577int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
578 void *value)
579{
580 u64 a0, a1;
581 int wait = 1000;
582 int err;
583
584 a0 = offset;
585 a1 = size;
586
587 err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
588
589 switch (size) {
590 case 1: *(u8 *)value = (u8)a0; break;
591 case 2: *(u16 *)value = (u16)a0; break;
592 case 4: *(u32 *)value = (u32)a0; break;
593 case 8: *(u64 *)value = a0; break;
594 default: BUG(); break;
595 }
596
597 return err;
598}
599
600int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
601{
602 u64 a0, a1;
603 int wait = 1000;
604
605 if (!vdev->stats) {
606 vdev->stats = dma_alloc_coherent(&vdev->pdev->dev,
607 sizeof(struct vnic_stats),
608 &vdev->stats_pa, GFP_ATOMIC);
609 if (!vdev->stats)
610 return -ENOMEM;
611 }
612
613 *stats = vdev->stats;
614 a0 = vdev->stats_pa;
615 a1 = sizeof(struct vnic_stats);
616
617 return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
618}
619
620int vnic_dev_close(struct vnic_dev *vdev)
621{
622 u64 a0 = 0, a1 = 0;
623 int wait = 1000;
624 return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
625}
626
627int vnic_dev_enable_wait(struct vnic_dev *vdev)
628{
629 u64 a0 = 0, a1 = 0;
630 int wait = 1000;
631
632 if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
633 return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
634 else
635 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
636}
637
638int vnic_dev_disable(struct vnic_dev *vdev)
639{
640 u64 a0 = 0, a1 = 0;
641 int wait = 1000;
642 return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
643}
644
645int vnic_dev_open(struct vnic_dev *vdev, int arg)
646{
647 u64 a0 = (u32)arg, a1 = 0;
648 int wait = 1000;
649 return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
650}
651
652int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
653{
654 u64 a0 = 0, a1 = 0;
655 int wait = 1000;
656 int err;
657
658 *done = 0;
659
660 err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
661 if (err)
662 return err;
663
664 *done = (a0 == 0);
665
666 return 0;
667}
668
669int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
670{
671 u64 a0 = (u32)arg, a1 = 0;
672 int wait = 1000;
673 return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
674}
675
676int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
677{
678 u64 a0 = 0, a1 = 0;
679 int wait = 1000;
680 int err;
681
682 *done = 0;
683
684 err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
685 if (err)
686 return err;
687
688 *done = (a0 == 0);
689
690 return 0;
691}
692
693int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg)
694{
695 u64 a0 = (u32)arg, a1 = 0;
696 int wait = 1000;
697 int err;
698
699 if (vnic_dev_capable(vdev, CMD_HANG_RESET)) {
700 return vnic_dev_cmd(vdev, CMD_HANG_RESET,
701 &a0, &a1, wait);
702 } else {
703 err = vnic_dev_soft_reset(vdev, arg);
704 if (err)
705 return err;
706 return vnic_dev_init(vdev, 0);
707 }
708}
709
710int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done)
711{
712 u64 a0 = 0, a1 = 0;
713 int wait = 1000;
714 int err;
715
716 *done = 0;
717
718 if (vnic_dev_capable(vdev, CMD_HANG_RESET_STATUS)) {
719 err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS,
720 &a0, &a1, wait);
721 if (err)
722 return err;
723 } else {
724 return vnic_dev_soft_reset_done(vdev, done);
725 }
726
727 *done = (a0 == 0);
728
729 return 0;
730}
731
732int vnic_dev_hang_notify(struct vnic_dev *vdev)
733{
734 u64 a0, a1;
735 int wait = 1000;
736 return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
737}
738
739int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
740{
741 u64 a0, a1;
742 int wait = 1000;
743 int err, i;
744
745 for (i = 0; i < ETH_ALEN; i++)
746 mac_addr[i] = 0;
747
748 err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
749 if (err)
750 return err;
751
752 for (i = 0; i < ETH_ALEN; i++)
753 mac_addr[i] = ((u8 *)&a0)[i];
754
755 return 0;
756}
757
758int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
759 int broadcast, int promisc, int allmulti)
760{
761 u64 a0, a1 = 0;
762 int wait = 1000;
763 int err;
764
765 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
766 (multicast ? CMD_PFILTER_MULTICAST : 0) |
767 (broadcast ? CMD_PFILTER_BROADCAST : 0) |
768 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
769 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
770
771 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
772 if (err)
773 vdev_neterr(vdev, "Can't set packet filter\n");
774
775 return err;
776}
777
778int vnic_dev_add_addr(struct vnic_dev *vdev, const u8 *addr)
779{
780 u64 a0 = 0, a1 = 0;
781 int wait = 1000;
782 int err;
783 int i;
784
785 for (i = 0; i < ETH_ALEN; i++)
786 ((u8 *)&a0)[i] = addr[i];
787
788 err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
789 if (err)
790 vdev_neterr(vdev, "Can't add addr [%pM], %d\n", addr, err);
791
792 return err;
793}
794
795int vnic_dev_del_addr(struct vnic_dev *vdev, const u8 *addr)
796{
797 u64 a0 = 0, a1 = 0;
798 int wait = 1000;
799 int err;
800 int i;
801
802 for (i = 0; i < ETH_ALEN; i++)
803 ((u8 *)&a0)[i] = addr[i];
804
805 err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
806 if (err)
807 vdev_neterr(vdev, "Can't del addr [%pM], %d\n", addr, err);
808
809 return err;
810}
811
812int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
813 u8 ig_vlan_rewrite_mode)
814{
815 u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
816 int wait = 1000;
817
818 if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
819 return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
820 &a0, &a1, wait);
821 else
822 return 0;
823}
824
825static int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
826 void *notify_addr, dma_addr_t notify_pa, u16 intr)
827{
828 u64 a0, a1;
829 int wait = 1000;
830 int r;
831
832 memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
833 vdev->notify = notify_addr;
834 vdev->notify_pa = notify_pa;
835
836 a0 = (u64)notify_pa;
837 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
838 a1 += sizeof(struct vnic_devcmd_notify);
839
840 r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
841 vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
842 return r;
843}
844
845int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
846{
847 void *notify_addr;
848 dma_addr_t notify_pa;
849
850 if (vdev->notify || vdev->notify_pa) {
851 vdev_neterr(vdev, "notify block %p still allocated\n",
852 vdev->notify);
853 return -EINVAL;
854 }
855
856 notify_addr = dma_alloc_coherent(&vdev->pdev->dev,
857 sizeof(struct vnic_devcmd_notify),
858 ¬ify_pa, GFP_ATOMIC);
859 if (!notify_addr)
860 return -ENOMEM;
861
862 return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
863}
864
865static int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
866{
867 u64 a0, a1;
868 int wait = 1000;
869 int err;
870
871 a0 = 0;
872 a1 = 0x0000ffff00000000ULL;
873 a1 += sizeof(struct vnic_devcmd_notify);
874
875 err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
876 vdev->notify = NULL;
877 vdev->notify_pa = 0;
878 vdev->notify_sz = 0;
879
880 return err;
881}
882
883int vnic_dev_notify_unset(struct vnic_dev *vdev)
884{
885 if (vdev->notify) {
886 dma_free_coherent(&vdev->pdev->dev,
887 sizeof(struct vnic_devcmd_notify),
888 vdev->notify, vdev->notify_pa);
889 }
890
891 return vnic_dev_notify_unsetcmd(vdev);
892}
893
894static int vnic_dev_notify_ready(struct vnic_dev *vdev)
895{
896 u32 *words;
897 unsigned int nwords = vdev->notify_sz / 4;
898 unsigned int i;
899 u32 csum;
900
901 if (!vdev->notify || !vdev->notify_sz)
902 return 0;
903
904 do {
905 csum = 0;
906 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
907 words = (u32 *)&vdev->notify_copy;
908 for (i = 1; i < nwords; i++)
909 csum += words[i];
910 } while (csum != words[0]);
911
912 return 1;
913}
914
915int vnic_dev_init(struct vnic_dev *vdev, int arg)
916{
917 u64 a0 = (u32)arg, a1 = 0;
918 int wait = 1000;
919 int r = 0;
920
921 if (vnic_dev_capable(vdev, CMD_INIT))
922 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
923 else {
924 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
925 if (a0 & CMD_INITF_DEFAULT_MAC) {
926
927
928
929 vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
930 vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
931 }
932 }
933 return r;
934}
935
936int vnic_dev_deinit(struct vnic_dev *vdev)
937{
938 u64 a0 = 0, a1 = 0;
939 int wait = 1000;
940
941 return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
942}
943
944void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
945{
946
947 vdev->intr_coal_timer_info.mul = 2;
948 vdev->intr_coal_timer_info.div = 3;
949 vdev->intr_coal_timer_info.max_usec =
950 vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
951}
952
953int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev)
954{
955 int wait = 1000;
956 int err;
957
958 memset(vdev->args, 0, sizeof(vdev->args));
959
960 if (vnic_dev_capable(vdev, CMD_INTR_COAL_CONVERT))
961 err = vdev->devcmd_rtn(vdev, CMD_INTR_COAL_CONVERT, wait);
962 else
963 err = ERR_ECMDUNKNOWN;
964
965
966
967
968 if ((err == ERR_ECMDUNKNOWN) ||
969 (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) {
970 vdev_netwarn(vdev, "Using default conversion factor for interrupt coalesce timer\n");
971 vnic_dev_intr_coal_timer_info_default(vdev);
972 return 0;
973 }
974
975 if (!err) {
976 vdev->intr_coal_timer_info.mul = (u32) vdev->args[0];
977 vdev->intr_coal_timer_info.div = (u32) vdev->args[1];
978 vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2];
979 }
980
981 return err;
982}
983
984int vnic_dev_link_status(struct vnic_dev *vdev)
985{
986 if (!vnic_dev_notify_ready(vdev))
987 return 0;
988
989 return vdev->notify_copy.link_state;
990}
991
992u32 vnic_dev_port_speed(struct vnic_dev *vdev)
993{
994 if (!vnic_dev_notify_ready(vdev))
995 return 0;
996
997 return vdev->notify_copy.port_speed;
998}
999
1000u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
1001{
1002 if (!vnic_dev_notify_ready(vdev))
1003 return 0;
1004
1005 return vdev->notify_copy.msglvl;
1006}
1007
1008u32 vnic_dev_mtu(struct vnic_dev *vdev)
1009{
1010 if (!vnic_dev_notify_ready(vdev))
1011 return 0;
1012
1013 return vdev->notify_copy.mtu;
1014}
1015
1016void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
1017 enum vnic_dev_intr_mode intr_mode)
1018{
1019 vdev->intr_mode = intr_mode;
1020}
1021
1022enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
1023 struct vnic_dev *vdev)
1024{
1025 return vdev->intr_mode;
1026}
1027
1028u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
1029{
1030 return (usec * vdev->intr_coal_timer_info.mul) /
1031 vdev->intr_coal_timer_info.div;
1032}
1033
1034u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
1035{
1036 return (hw_cycles * vdev->intr_coal_timer_info.div) /
1037 vdev->intr_coal_timer_info.mul;
1038}
1039
1040u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
1041{
1042 return vdev->intr_coal_timer_info.max_usec;
1043}
1044
1045void vnic_dev_unregister(struct vnic_dev *vdev)
1046{
1047 if (vdev) {
1048 if (vdev->notify)
1049 dma_free_coherent(&vdev->pdev->dev,
1050 sizeof(struct vnic_devcmd_notify),
1051 vdev->notify, vdev->notify_pa);
1052 if (vdev->stats)
1053 dma_free_coherent(&vdev->pdev->dev,
1054 sizeof(struct vnic_stats),
1055 vdev->stats, vdev->stats_pa);
1056 if (vdev->fw_info)
1057 dma_free_coherent(&vdev->pdev->dev,
1058 sizeof(struct vnic_devcmd_fw_info),
1059 vdev->fw_info, vdev->fw_info_pa);
1060 if (vdev->devcmd2)
1061 vnic_dev_deinit_devcmd2(vdev);
1062
1063 kfree(vdev);
1064 }
1065}
1066EXPORT_SYMBOL(vnic_dev_unregister);
1067
1068struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
1069 void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
1070 unsigned int num_bars)
1071{
1072 if (!vdev) {
1073 vdev = kzalloc(sizeof(struct vnic_dev), GFP_KERNEL);
1074 if (!vdev)
1075 return NULL;
1076 }
1077
1078 vdev->priv = priv;
1079 vdev->pdev = pdev;
1080
1081 if (vnic_dev_discover_res(vdev, bar, num_bars))
1082 goto err_out;
1083
1084 return vdev;
1085
1086err_out:
1087 vnic_dev_unregister(vdev);
1088 return NULL;
1089}
1090EXPORT_SYMBOL(vnic_dev_register);
1091
1092struct pci_dev *vnic_dev_get_pdev(struct vnic_dev *vdev)
1093{
1094 return vdev->pdev;
1095}
1096EXPORT_SYMBOL(vnic_dev_get_pdev);
1097
1098int vnic_devcmd_init(struct vnic_dev *vdev)
1099{
1100 void __iomem *res;
1101 int err;
1102
1103 res = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD2, 0);
1104 if (res) {
1105 err = vnic_dev_init_devcmd2(vdev);
1106 if (err)
1107 vdev_warn(vdev, "DEVCMD2 init failed: %d, Using DEVCMD1\n",
1108 err);
1109 else
1110 return 0;
1111 } else {
1112 vdev_warn(vdev, "DEVCMD2 resource not found (old firmware?) Using DEVCMD1\n");
1113 }
1114 err = vnic_dev_init_devcmd1(vdev);
1115 if (err)
1116 vdev_err(vdev, "DEVCMD1 initialization failed: %d\n", err);
1117
1118 return err;
1119}
1120
1121int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len)
1122{
1123 u64 a0, a1 = len;
1124 int wait = 1000;
1125 dma_addr_t prov_pa;
1126 void *prov_buf;
1127 int ret;
1128
1129 prov_buf = dma_alloc_coherent(&vdev->pdev->dev, len, &prov_pa, GFP_ATOMIC);
1130 if (!prov_buf)
1131 return -ENOMEM;
1132
1133 memcpy(prov_buf, buf, len);
1134
1135 a0 = prov_pa;
1136
1137 ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO2, &a0, &a1, wait);
1138
1139 dma_free_coherent(&vdev->pdev->dev, len, prov_buf, prov_pa);
1140
1141 return ret;
1142}
1143
1144int vnic_dev_enable2(struct vnic_dev *vdev, int active)
1145{
1146 u64 a0, a1 = 0;
1147 int wait = 1000;
1148
1149 a0 = (active ? CMD_ENABLE2_ACTIVE : 0);
1150
1151 return vnic_dev_cmd(vdev, CMD_ENABLE2, &a0, &a1, wait);
1152}
1153
1154static int vnic_dev_cmd_status(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
1155 int *status)
1156{
1157 u64 a0 = cmd, a1 = 0;
1158 int wait = 1000;
1159 int ret;
1160
1161 ret = vnic_dev_cmd(vdev, CMD_STATUS, &a0, &a1, wait);
1162 if (!ret)
1163 *status = (int)a0;
1164
1165 return ret;
1166}
1167
1168int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status)
1169{
1170 return vnic_dev_cmd_status(vdev, CMD_ENABLE2, status);
1171}
1172
1173int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status)
1174{
1175 return vnic_dev_cmd_status(vdev, CMD_DEINIT, status);
1176}
1177
1178int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
1179{
1180 u64 a0, a1;
1181 int wait = 1000;
1182 int i;
1183
1184 for (i = 0; i < ETH_ALEN; i++)
1185 ((u8 *)&a0)[i] = mac_addr[i];
1186
1187 return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
1188}
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
1205 struct filter *data)
1206{
1207 u64 a0, a1;
1208 int wait = 1000;
1209 dma_addr_t tlv_pa;
1210 int ret = -EINVAL;
1211 struct filter_tlv *tlv, *tlv_va;
1212 struct filter_action *action;
1213 u64 tlv_size;
1214
1215 if (cmd == CLSF_ADD) {
1216 tlv_size = sizeof(struct filter) +
1217 sizeof(struct filter_action) +
1218 2 * sizeof(struct filter_tlv);
1219 tlv_va = dma_alloc_coherent(&vdev->pdev->dev, tlv_size,
1220 &tlv_pa, GFP_ATOMIC);
1221 if (!tlv_va)
1222 return -ENOMEM;
1223 tlv = tlv_va;
1224 a0 = tlv_pa;
1225 a1 = tlv_size;
1226 memset(tlv, 0, tlv_size);
1227 tlv->type = CLSF_TLV_FILTER;
1228 tlv->length = sizeof(struct filter);
1229 *(struct filter *)&tlv->val = *data;
1230
1231 tlv = (struct filter_tlv *)((char *)tlv +
1232 sizeof(struct filter_tlv) +
1233 sizeof(struct filter));
1234
1235 tlv->type = CLSF_TLV_ACTION;
1236 tlv->length = sizeof(struct filter_action);
1237 action = (struct filter_action *)&tlv->val;
1238 action->type = FILTER_ACTION_RQ_STEERING;
1239 action->u.rq_idx = *entry;
1240
1241 ret = vnic_dev_cmd(vdev, CMD_ADD_FILTER, &a0, &a1, wait);
1242 *entry = (u16)a0;
1243 dma_free_coherent(&vdev->pdev->dev, tlv_size, tlv_va, tlv_pa);
1244 } else if (cmd == CLSF_DEL) {
1245 a0 = *entry;
1246 ret = vnic_dev_cmd(vdev, CMD_DEL_FILTER, &a0, &a1, wait);
1247 }
1248
1249 return ret;
1250}
1251
1252int vnic_dev_overlay_offload_ctrl(struct vnic_dev *vdev, u8 overlay, u8 config)
1253{
1254 u64 a0 = overlay;
1255 u64 a1 = config;
1256 int wait = 1000;
1257
1258 return vnic_dev_cmd(vdev, CMD_OVERLAY_OFFLOAD_CTRL, &a0, &a1, wait);
1259}
1260
1261int vnic_dev_overlay_offload_cfg(struct vnic_dev *vdev, u8 overlay,
1262 u16 vxlan_udp_port_number)
1263{
1264 u64 a1 = vxlan_udp_port_number;
1265 u64 a0 = overlay;
1266 int wait = 1000;
1267
1268 return vnic_dev_cmd(vdev, CMD_OVERLAY_OFFLOAD_CFG, &a0, &a1, wait);
1269}
1270
1271int vnic_dev_get_supported_feature_ver(struct vnic_dev *vdev, u8 feature,
1272 u64 *supported_versions, u64 *a1)
1273{
1274 u64 a0 = feature;
1275 int wait = 1000;
1276 int ret;
1277
1278 ret = vnic_dev_cmd(vdev, CMD_GET_SUPP_FEATURE_VER, &a0, a1, wait);
1279 if (!ret)
1280 *supported_versions = a0;
1281
1282 return ret;
1283}
1284
1285int vnic_dev_capable_rss_hash_type(struct vnic_dev *vdev, u8 *rss_hash_type)
1286{
1287 u64 a0 = CMD_NIC_CFG, a1 = 0;
1288 int wait = 1000;
1289 int err;
1290
1291 err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
1292
1293
1294
1295 if (err || (a0 != 1))
1296 return -EOPNOTSUPP;
1297
1298 a1 = (a1 >> NIC_CFG_RSS_HASH_TYPE_SHIFT) &
1299 NIC_CFG_RSS_HASH_TYPE_MASK_FIELD;
1300
1301 *rss_hash_type = (u8)a1;
1302
1303 return 0;
1304}
1305
