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[net-next-2.6.git] / drivers / net / enic / vnic_dev.c
CommitLineData
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>
5a0e3ad6 26#include <linux/slab.h>
01f2e4ea
SF		 27
28#include "vnic_resource.h"
29#include "vnic_devcmd.h"
30#include "vnic_dev.h"
31#include "vnic_stats.h"
32
33struct vnic_res {
34 void __iomem *vaddr;
27e6c7d3 35 dma_addr_t bus_addr;
01f2e4ea
SF		 36 unsigned int count;
37};
38
4cdc44a2 39#define VNIC_DEV_CAP_INIT 0x0001
4cdc44a2 40
01f2e4ea
SF		 41struct vnic_dev {
42 void *priv;
43 struct pci_dev *pdev;
44 struct vnic_res res[RES_TYPE_MAX];
45 enum vnic_dev_intr_mode intr_mode;
46 struct vnic_devcmd __iomem *devcmd;
47 struct vnic_devcmd_notify *notify;
48 struct vnic_devcmd_notify notify_copy;
49 dma_addr_t notify_pa;
27372bf5 50 u32 notify_sz;
01f2e4ea
SF		 51 u32 *linkstatus;
52 dma_addr_t linkstatus_pa;
53 struct vnic_stats *stats;
54 dma_addr_t stats_pa;
55 struct vnic_devcmd_fw_info *fw_info;
56 dma_addr_t fw_info_pa;
4cdc44a2 57 u32 cap_flags;
01f2e4ea
SF		 58};
59
60#define VNIC_MAX_RES_HDR_SIZE \
61 (sizeof(struct vnic_resource_header) + \
62 sizeof(struct vnic_resource) * RES_TYPE_MAX)
63#define VNIC_RES_STRIDE 128
64
65void *vnic_dev_priv(struct vnic_dev *vdev)
66{
67 return vdev->priv;
68}
69
70static int vnic_dev_discover_res(struct vnic_dev *vdev,
27e6c7d3 71 struct vnic_dev_bar *bar, unsigned int num_bars)
01f2e4ea
SF		 72{
73 struct vnic_resource_header __iomem *rh;
74 struct vnic_resource __iomem *r;
75 u8 type;
76
27e6c7d3
SF		 77 if (num_bars == 0)
78 return -EINVAL;
79
01f2e4ea 80 if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
a7a79deb 81 pr_err("vNIC BAR0 res hdr length error\n");
01f2e4ea
SF		 82 return -EINVAL;
83 }
84
85 rh = bar->vaddr;
86 if (!rh) {
a7a79deb 87 pr_err("vNIC BAR0 res hdr not mem-mapped\n");
01f2e4ea
SF		 88 return -EINVAL;
89 }
90
91 if (ioread32(&rh->magic) != VNIC_RES_MAGIC ||
92 ioread32(&rh->version) != VNIC_RES_VERSION) {
a7a79deb 93 pr_err("vNIC BAR0 res magic/version error "
01f2e4ea
SF		 94 "exp (%lx/%lx) curr (%x/%x)\n",
95 VNIC_RES_MAGIC, VNIC_RES_VERSION,
96 ioread32(&rh->magic), ioread32(&rh->version));
97 return -EINVAL;
98 }
99
100 r = (struct vnic_resource __iomem *)(rh + 1);
101
102 while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
103
104 u8 bar_num = ioread8(&r->bar);
105 u32 bar_offset = ioread32(&r->bar_offset);
106 u32 count = ioread32(&r->count);
107 u32 len;
108
109 r++;
110
27e6c7d3
SF		 111 if (bar_num >= num_bars)
112 continue;
113
114 if (!bar[bar_num].len || !bar[bar_num].vaddr)
01f2e4ea
SF		 115 continue;
116
117 switch (type) {
118 case RES_TYPE_WQ:
119 case RES_TYPE_RQ:
120 case RES_TYPE_CQ:
121 case RES_TYPE_INTR_CTRL:
122 /* each count is stride bytes long */
123 len = count * VNIC_RES_STRIDE;
27e6c7d3 124 if (len + bar_offset > bar[bar_num].len) {
a7a79deb 125 pr_err("vNIC BAR0 resource %d "
01f2e4ea
SF		 126 "out-of-bounds, offset 0x%x + "
127 "size 0x%x > bar len 0x%lx\n",
128 type, bar_offset,
129 len,
27e6c7d3 130 bar[bar_num].len);
01f2e4ea
SF		 131 return -EINVAL;
132 }
133 break;
134 case RES_TYPE_INTR_PBA_LEGACY:
135 case RES_TYPE_DEVCMD:
136 len = count;
137 break;
138 default:
139 continue;
140 }
141
142 vdev->res[type].count = count;
27e6c7d3
SF		 143 vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
144 bar_offset;
145 vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
01f2e4ea
SF		 146 }
147
148 return 0;
149}
150
151unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
152 enum vnic_res_type type)
153{
154 return vdev->res[type].count;
155}
156
157void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
158 unsigned int index)
159{
160 if (!vdev->res[type].vaddr)
161 return NULL;
162
163 switch (type) {
164 case RES_TYPE_WQ:
165 case RES_TYPE_RQ:
166 case RES_TYPE_CQ:
167 case RES_TYPE_INTR_CTRL:
168 return (char __iomem *)vdev->res[type].vaddr +
169 index * VNIC_RES_STRIDE;
170 default:
171 return (char __iomem *)vdev->res[type].vaddr;
172 }
173}
174
27e6c7d3
SF		 175dma_addr_t vnic_dev_get_res_bus_addr(struct vnic_dev *vdev,
176 enum vnic_res_type type, unsigned int index)
177{
178 switch (type) {
179 case RES_TYPE_WQ:
180 case RES_TYPE_RQ:
181 case RES_TYPE_CQ:
182 case RES_TYPE_INTR_CTRL:
183 return vdev->res[type].bus_addr +
184 index * VNIC_RES_STRIDE;
185 default:
186 return vdev->res[type].bus_addr;
187 }
188}
189
01f2e4ea
SF		 190unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
191 unsigned int desc_count, unsigned int desc_size)
192{
193 /* The base address of the desc rings must be 512 byte aligned.
194 * Descriptor count is aligned to groups of 32 descriptors. A
195 * count of 0 means the maximum 4096 descriptors. Descriptor
196 * size is aligned to 16 bytes.
197 */
198
199 unsigned int count_align = 32;
200 unsigned int desc_align = 16;
201
202 ring->base_align = 512;
203
204 if (desc_count == 0)
205 desc_count = 4096;
206
207 ring->desc_count = ALIGN(desc_count, count_align);
208
209 ring->desc_size = ALIGN(desc_size, desc_align);
210
211 ring->size = ring->desc_count * ring->desc_size;
212 ring->size_unaligned = ring->size + ring->base_align;
213
214 return ring->size_unaligned;
215}
216
217void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
218{
219 memset(ring->descs, 0, ring->size);
220}
221
222int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
223 unsigned int desc_count, unsigned int desc_size)
224{
225 vnic_dev_desc_ring_size(ring, desc_count, desc_size);
226
227 ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
228 ring->size_unaligned,
229 &ring->base_addr_unaligned);
230
231 if (!ring->descs_unaligned) {
a7a79deb 232 pr_err("Failed to allocate ring (size=%d), aborting\n",
01f2e4ea
SF		 233 (int)ring->size);
234 return -ENOMEM;
235 }
236
237 ring->base_addr = ALIGN(ring->base_addr_unaligned,
238 ring->base_align);
239 ring->descs = (u8 *)ring->descs_unaligned +
240 (ring->base_addr - ring->base_addr_unaligned);
241
242 vnic_dev_clear_desc_ring(ring);
243
244 ring->desc_avail = ring->desc_count - 1;
245
246 return 0;
247}
248
249void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
250{
251 if (ring->descs) {
252 pci_free_consistent(vdev->pdev,
253 ring->size_unaligned,
254 ring->descs_unaligned,
255 ring->base_addr_unaligned);
256 ring->descs = NULL;
257 }
258}
259
260int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
261 u64 *a0, u64 *a1, int wait)
262{
263 struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
264 int delay;
265 u32 status;
01f2e4ea
SF		 266 int err;
267
268 status = ioread32(&devcmd->status);
269 if (status & STAT_BUSY) {
a7a79deb 270 pr_err("Busy devcmd %d\n", _CMD_N(cmd));
01f2e4ea
SF		 271 return -EBUSY;
272 }
273
274 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
275 writeq(*a0, &devcmd->args[0]);
276 writeq(*a1, &devcmd->args[1]);
277 wmb();
278 }
279
280 iowrite32(cmd, &devcmd->cmd);
281
282 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
27e6c7d3 283 return 0;
01f2e4ea
SF		 284
285 for (delay = 0; delay < wait; delay++) {
286
287 udelay(100);
288
289 status = ioread32(&devcmd->status);
290 if (!(status & STAT_BUSY)) {
291
292 if (status & STAT_ERROR) {
27372bf5
SF		 293 err = (int)readq(&devcmd->args[0]);
294 if (err != ERR_ECMDUNKNOWN ||
295 cmd != CMD_CAPABILITY)
a7a79deb 296 pr_err("Error %d devcmd %d\n",
27372bf5
SF		 297 err, _CMD_N(cmd));
298 return err;
01f2e4ea
SF		 299 }
300
301 if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
302 rmb();
303 *a0 = readq(&devcmd->args[0]);
304 *a1 = readq(&devcmd->args[1]);
305 }
306
307 return 0;
308 }
309 }
310
a7a79deb 311 pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
01f2e4ea
SF		 312 return -ETIMEDOUT;
313}
314
5e4232ee 315static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
27372bf5
SF		 316{
317 u64 a0 = (u32)cmd, a1 = 0;
318 int wait = 1000;
319 int err;
320
321 err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
322
323 return !(err || a0);
324}
325
01f2e4ea
SF		 326int vnic_dev_fw_info(struct vnic_dev *vdev,
327 struct vnic_devcmd_fw_info **fw_info)
328{
329 u64 a0, a1 = 0;
330 int wait = 1000;
331 int err = 0;
332
333 if (!vdev->fw_info) {
334 vdev->fw_info = pci_alloc_consistent(vdev->pdev,
335 sizeof(struct vnic_devcmd_fw_info),
336 &vdev->fw_info_pa);
337 if (!vdev->fw_info)
338 return -ENOMEM;
339
340 a0 = vdev->fw_info_pa;
341
342 /* only get fw_info once and cache it */
343 err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait);
344 }
345
346 *fw_info = vdev->fw_info;
347
348 return err;
349}
350
4badc385
SF		 351int vnic_dev_hw_version(struct vnic_dev *vdev, enum vnic_dev_hw_version *hw_ver)
352{
353 struct vnic_devcmd_fw_info *fw_info;
354 int err;
355
356 err = vnic_dev_fw_info(vdev, &fw_info);
357 if (err)
358 return err;
359
360 if (strncmp(fw_info->hw_version, "A1", sizeof("A1")) == 0)
361 *hw_ver = VNIC_DEV_HW_VER_A1;
362 else if (strncmp(fw_info->hw_version, "A2", sizeof("A2")) == 0)
363 *hw_ver = VNIC_DEV_HW_VER_A2;
364 else
365 *hw_ver = VNIC_DEV_HW_VER_UNKNOWN;
366
367 return 0;
368}
369
01f2e4ea
SF		 370int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
371 void *value)
372{
373 u64 a0, a1;
374 int wait = 1000;
375 int err;
376
377 a0 = offset;
378 a1 = size;
379
380 err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
381
382 switch (size) {
383 case 1: *(u8 *)value = (u8)a0; break;
384 case 2: *(u16 *)value = (u16)a0; break;
385 case 4: *(u32 *)value = (u32)a0; break;
386 case 8: *(u64 *)value = a0; break;
387 default: BUG(); break;
388 }
389
390 return err;
391}
392
393int vnic_dev_stats_clear(struct vnic_dev *vdev)
394{
395 u64 a0 = 0, a1 = 0;
396 int wait = 1000;
397 return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
398}
399
400int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
401{
402 u64 a0, a1;
403 int wait = 1000;
404
405 if (!vdev->stats) {
406 vdev->stats = pci_alloc_consistent(vdev->pdev,
407 sizeof(struct vnic_stats), &vdev->stats_pa);
408 if (!vdev->stats)
409 return -ENOMEM;
410 }
411
412 *stats = vdev->stats;
413 a0 = vdev->stats_pa;
414 a1 = sizeof(struct vnic_stats);
415
416 return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
417}
418
419int vnic_dev_close(struct vnic_dev *vdev)
420{
421 u64 a0 = 0, a1 = 0;
422 int wait = 1000;
423 return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
424}
425
426int vnic_dev_enable(struct vnic_dev *vdev)
427{
428 u64 a0 = 0, a1 = 0;
429 int wait = 1000;
430 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
431}
432
433int vnic_dev_disable(struct vnic_dev *vdev)
434{
435 u64 a0 = 0, a1 = 0;
436 int wait = 1000;
437 return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
438}
439
440int vnic_dev_open(struct vnic_dev *vdev, int arg)
441{
442 u64 a0 = (u32)arg, a1 = 0;
443 int wait = 1000;
444 return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
445}
446
447int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
448{
449 u64 a0 = 0, a1 = 0;
450 int wait = 1000;
451 int err;
452
453 *done = 0;
454
455 err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
456 if (err)
457 return err;
458
459 *done = (a0 == 0);
460
461 return 0;
462}
463
464int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
465{
466 u64 a0 = (u32)arg, a1 = 0;
467 int wait = 1000;
468 return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
469}
470
471int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
472{
473 u64 a0 = 0, a1 = 0;
474 int wait = 1000;
475 int err;
476
477 *done = 0;
478
479 err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
480 if (err)
481 return err;
482
483 *done = (a0 == 0);
484
485 return 0;
486}
487
99ef5639
VK		 488int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg)
489{
490 u64 a0 = (u32)arg, a1 = 0;
491 int wait = 1000;
492 int err;
493
494 err = vnic_dev_cmd(vdev, CMD_HANG_RESET, &a0, &a1, wait);
495 if (err == ERR_ECMDUNKNOWN) {
496 err = vnic_dev_soft_reset(vdev, arg);
497 if (err)
498 return err;
499
500 return vnic_dev_init(vdev, 0);
501 }
502
503 return err;
504}
505
506int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done)
507{
508 u64 a0 = 0, a1 = 0;
509 int wait = 1000;
510 int err;
511
512 *done = 0;
513
514 err = vnic_dev_cmd(vdev, CMD_HANG_RESET_STATUS, &a0, &a1, wait);
515 if (err) {
516 if (err == ERR_ECMDUNKNOWN)
517 return vnic_dev_soft_reset_done(vdev, done);
518 return err;
519 }
520
521 *done = (a0 == 0);
522
523 return 0;
524}
525
01f2e4ea
SF		 526int vnic_dev_hang_notify(struct vnic_dev *vdev)
527{
528 u64 a0, a1;
529 int wait = 1000;
530 return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
531}
532
533int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
534{
535 u64 a0, a1;
536 int wait = 1000;
537 int err, i;
538
539 for (i = 0; i < ETH_ALEN; i++)
540 mac_addr[i] = 0;
541
542 err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
543 if (err)
544 return err;
545
546 for (i = 0; i < ETH_ALEN; i++)
547 mac_addr[i] = ((u8 *)&a0)[i];
548
549 return 0;
550}
551
383ab92f 552int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
01f2e4ea
SF		 553 int broadcast, int promisc, int allmulti)
554{
555 u64 a0, a1 = 0;
556 int wait = 1000;
557 int err;
558
559 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
560 (multicast ? CMD_PFILTER_MULTICAST : 0) |
561 (broadcast ? CMD_PFILTER_BROADCAST : 0) |
562 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
563 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
564
565 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
566 if (err)
a7a79deb 567 pr_err("Can't set packet filter\n");
383ab92f
VK		 568
569 return err;
01f2e4ea
SF		 570}
571
f8bd9091 572int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
01f2e4ea
SF		 573{
574 u64 a0 = 0, a1 = 0;
575 int wait = 1000;
576 int err;
577 int i;
578
579 for (i = 0; i < ETH_ALEN; i++)
580 ((u8 *)&a0)[i] = addr[i];
581
582 err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
583 if (err)
a7a79deb 584 pr_err("Can't add addr [%pM], %d\n", addr, err);
f8bd9091
SF		 585
586 return err;
01f2e4ea
SF		 587}
588
f8bd9091 589int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
01f2e4ea
SF		 590{
591 u64 a0 = 0, a1 = 0;
592 int wait = 1000;
593 int err;
594 int i;
595
596 for (i = 0; i < ETH_ALEN; i++)
597 ((u8 *)&a0)[i] = addr[i];
598
599 err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
600 if (err)
a7a79deb 601 pr_err("Can't del addr [%pM], %d\n", addr, err);
f8bd9091
SF		 602
603 return err;
01f2e4ea
SF		 604}
605
f8cac14a
VK		 606int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
607 u8 ig_vlan_rewrite_mode)
608{
609 u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
610 int wait = 1000;
611 int err;
612
613 err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait);
614 if (err == ERR_ECMDUNKNOWN)
615 return 0;
616
617 return err;
618}
619
d73149f5
SF		 620int vnic_dev_raise_intr(struct vnic_dev *vdev, u16 intr)
621{
622 u64 a0 = intr, a1 = 0;
623 int wait = 1000;
624 int err;
625
626 err = vnic_dev_cmd(vdev, CMD_IAR, &a0, &a1, wait);
627 if (err)
a7a79deb 628 pr_err("Failed to raise INTR[%d], err %d\n", intr, err);
d73149f5
SF		 629
630 return err;
631}
632
d883aa76
VK		 633int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
634 void *notify_addr, dma_addr_t notify_pa, u16 intr)
01f2e4ea
SF		 635{
636 u64 a0, a1;
637 int wait = 1000;
27372bf5 638 int r;
01f2e4ea 639
d883aa76
VK		 640 memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
641 vdev->notify = notify_addr;
642 vdev->notify_pa = notify_pa;
01f2e4ea 643
d883aa76 644 a0 = (u64)notify_pa;
01f2e4ea
SF		 645 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
646 a1 += sizeof(struct vnic_devcmd_notify);
647
27372bf5
SF		 648 r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
649 vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
650 return r;
01f2e4ea
SF		 651}
652
d883aa76
VK		 653int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
654{
655 void *notify_addr;
656 dma_addr_t notify_pa;
657
658 if (vdev->notify || vdev->notify_pa) {
a7a79deb 659 pr_err("notify block %p still allocated", vdev->notify);
d883aa76
VK		 660 return -EINVAL;
661 }
662
663 notify_addr = pci_alloc_consistent(vdev->pdev,
664 sizeof(struct vnic_devcmd_notify),
665 &notify_pa);
666 if (!notify_addr)
667 return -ENOMEM;
668
669 return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
670}
671
383ab92f 672int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
01f2e4ea
SF		 673{
674 u64 a0, a1;
675 int wait = 1000;
383ab92f 676 int err;
01f2e4ea
SF		 677
678 a0 = 0; /* paddr = 0 to unset notify buffer */
679 a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
680 a1 += sizeof(struct vnic_devcmd_notify);
681
383ab92f 682 err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
d883aa76
VK		 683 vdev->notify = NULL;
684 vdev->notify_pa = 0;
27372bf5 685 vdev->notify_sz = 0;
383ab92f
VK		 686
687 return err;
01f2e4ea
SF		 688}
689
383ab92f 690int vnic_dev_notify_unset(struct vnic_dev *vdev)
d883aa76
VK		 691{
692 if (vdev->notify) {
693 pci_free_consistent(vdev->pdev,
694 sizeof(struct vnic_devcmd_notify),
695 vdev->notify,
696 vdev->notify_pa);
697 }
698
383ab92f 699 return vnic_dev_notify_unsetcmd(vdev);
d883aa76
VK		 700}
701
01f2e4ea
SF		 702static int vnic_dev_notify_ready(struct vnic_dev *vdev)
703{
704 u32 *words;
27372bf5 705 unsigned int nwords = vdev->notify_sz / 4;
01f2e4ea
SF		 706 unsigned int i;
707 u32 csum;
708
27372bf5 709 if (!vdev->notify || !vdev->notify_sz)
01f2e4ea
SF		 710 return 0;
711
712 do {
713 csum = 0;
27372bf5 714 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
01f2e4ea
SF		 715 words = (u32 *)&vdev->notify_copy;
716 for (i = 1; i < nwords; i++)
717 csum += words[i];
718 } while (csum != words[0]);
719
720 return 1;
721}
722
723int vnic_dev_init(struct vnic_dev *vdev, int arg)
724{
725 u64 a0 = (u32)arg, a1 = 0;
726 int wait = 1000;
4cdc44a2 727 int r = 0;
27372bf5 728
4cdc44a2 729 if (vdev->cap_flags & VNIC_DEV_CAP_INIT)
27372bf5
SF		 730 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
731 else {
732 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
733 if (a0 & CMD_INITF_DEFAULT_MAC) {
734 // Emulate these for old CMD_INIT_v1 which
735 // didn't pass a0 so no CMD_INITF_*.
736 vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
737 vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
738 }
4cdc44a2
SF		 739 }
740 return r;
01f2e4ea
SF		 741}
742
f8bd9091
SF		 743int vnic_dev_init_done(struct vnic_dev *vdev, int *done, int *err)
744{
745 u64 a0 = 0, a1 = 0;
746 int wait = 1000;
747 int ret;
748
749 *done = 0;
750
751 ret = vnic_dev_cmd(vdev, CMD_INIT_STATUS, &a0, &a1, wait);
752 if (ret)
753 return ret;
754
755 *done = (a0 == 0);
756
757 *err = (a0 == 0) ? a1 : 0;
758
759 return 0;
760}
761
762int vnic_dev_init_prov(struct vnic_dev *vdev, u8 *buf, u32 len)
763{
764 u64 a0, a1 = len;
765 int wait = 1000;
d49aba84 766 dma_addr_t prov_pa;
f8bd9091
SF		 767 void *prov_buf;
768 int ret;
769
770 prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa);
771 if (!prov_buf)
772 return -ENOMEM;
773
774 memcpy(prov_buf, buf, len);
775
776 a0 = prov_pa;
777
778 ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO, &a0, &a1, wait);
779
780 pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa);
781
782 return ret;
783}
784
785int vnic_dev_deinit(struct vnic_dev *vdev)
786{
787 u64 a0 = 0, a1 = 0;
788 int wait = 1000;
789
790 return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
791}
792
01f2e4ea
SF		 793int vnic_dev_link_status(struct vnic_dev *vdev)
794{
795 if (vdev->linkstatus)
796 return *vdev->linkstatus;
797
798 if (!vnic_dev_notify_ready(vdev))
799 return 0;
800
801 return vdev->notify_copy.link_state;
802}
803
804u32 vnic_dev_port_speed(struct vnic_dev *vdev)
805{
806 if (!vnic_dev_notify_ready(vdev))
807 return 0;
808
809 return vdev->notify_copy.port_speed;
810}
811
812u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
813{
814 if (!vnic_dev_notify_ready(vdev))
815 return 0;
816
817 return vdev->notify_copy.msglvl;
818}
819
820u32 vnic_dev_mtu(struct vnic_dev *vdev)
821{
822 if (!vnic_dev_notify_ready(vdev))
823 return 0;
824
825 return vdev->notify_copy.mtu;
826}
827
4cdc44a2
SF		 828u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev)
829{
830 if (!vnic_dev_notify_ready(vdev))
831 return 0;
832
833 return vdev->notify_copy.link_down_cnt;
834}
835
836u32 vnic_dev_notify_status(struct vnic_dev *vdev)
837{
838 if (!vnic_dev_notify_ready(vdev))
839 return 0;
840
841 return vdev->notify_copy.status;
842}
843
383ab92f
VK		 844u32 vnic_dev_uif(struct vnic_dev *vdev)
845{
846 if (!vnic_dev_notify_ready(vdev))
847 return 0;
848
849 return vdev->notify_copy.uif;
850}
851
01f2e4ea
SF		 852void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
853 enum vnic_dev_intr_mode intr_mode)
854{
855 vdev->intr_mode = intr_mode;
856}
857
858enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
859 struct vnic_dev *vdev)
860{
861 return vdev->intr_mode;
862}
863
864void vnic_dev_unregister(struct vnic_dev *vdev)
865{
866 if (vdev) {
867 if (vdev->notify)
868 pci_free_consistent(vdev->pdev,
869 sizeof(struct vnic_devcmd_notify),
870 vdev->notify,
871 vdev->notify_pa);
872 if (vdev->linkstatus)
873 pci_free_consistent(vdev->pdev,
874 sizeof(u32),
875 vdev->linkstatus,
876 vdev->linkstatus_pa);
877 if (vdev->stats)
878 pci_free_consistent(vdev->pdev,
879 sizeof(struct vnic_dev),
880 vdev->stats, vdev->stats_pa);
881 if (vdev->fw_info)
882 pci_free_consistent(vdev->pdev,
883 sizeof(struct vnic_devcmd_fw_info),
884 vdev->fw_info, vdev->fw_info_pa);
885 kfree(vdev);
886 }
887}
888
889struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
27e6c7d3
SF		 890 void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
891 unsigned int num_bars)
01f2e4ea
SF		 892{
893 if (!vdev) {
894 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
895 if (!vdev)
896 return NULL;
897 }
898
899 vdev->priv = priv;
900 vdev->pdev = pdev;
901
27e6c7d3 902 if (vnic_dev_discover_res(vdev, bar, num_bars))
01f2e4ea
SF		 903 goto err_out;
904
905 vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
906 if (!vdev->devcmd)
907 goto err_out;
908
4cdc44a2
SF		 909 vdev->cap_flags = 0;
910
911 if (vnic_dev_capable(vdev, CMD_INIT))
912 vdev->cap_flags |= VNIC_DEV_CAP_INIT;
913
01f2e4ea
SF		 914 return vdev;
915
916err_out:
917 vnic_dev_unregister(vdev);
918 return NULL;
919}
920
27372bf5 921
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