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enic: Bug Fix: Change hardware ingress vlan rewrite mode
[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
SF		 80 if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
81 printk(KERN_ERR "vNIC BAR0 res hdr length error\n");
82 return -EINVAL;
83 }
84
85 rh = bar->vaddr;
86 if (!rh) {
87 printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n");
88 return -EINVAL;
89 }
90
91 if (ioread32(&rh->magic) != VNIC_RES_MAGIC ||
92 ioread32(&rh->version) != VNIC_RES_VERSION) {
93 printk(KERN_ERR "vNIC BAR0 res magic/version error "
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) {
01f2e4ea
SF		 125 printk(KERN_ERR "vNIC BAR0 resource %d "
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) {
232 printk(KERN_ERR
233 "Failed to allocate ring (size=%d), aborting\n",
234 (int)ring->size);
235 return -ENOMEM;
236 }
237
238 ring->base_addr = ALIGN(ring->base_addr_unaligned,
239 ring->base_align);
240 ring->descs = (u8 *)ring->descs_unaligned +
241 (ring->base_addr - ring->base_addr_unaligned);
242
243 vnic_dev_clear_desc_ring(ring);
244
245 ring->desc_avail = ring->desc_count - 1;
246
247 return 0;
248}
249
250void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
251{
252 if (ring->descs) {
253 pci_free_consistent(vdev->pdev,
254 ring->size_unaligned,
255 ring->descs_unaligned,
256 ring->base_addr_unaligned);
257 ring->descs = NULL;
258 }
259}
260
261int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
262 u64 *a0, u64 *a1, int wait)
263{
264 struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
265 int delay;
266 u32 status;
01f2e4ea
SF		 267 int err;
268
269 status = ioread32(&devcmd->status);
270 if (status & STAT_BUSY) {
271 printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd));
272 return -EBUSY;
273 }
274
275 if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
276 writeq(*a0, &devcmd->args[0]);
277 writeq(*a1, &devcmd->args[1]);
278 wmb();
279 }
280
281 iowrite32(cmd, &devcmd->cmd);
282
283 if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
27e6c7d3 284 return 0;
01f2e4ea
SF		 285
286 for (delay = 0; delay < wait; delay++) {
287
288 udelay(100);
289
290 status = ioread32(&devcmd->status);
291 if (!(status & STAT_BUSY)) {
292
293 if (status & STAT_ERROR) {
27372bf5
SF		 294 err = (int)readq(&devcmd->args[0]);
295 if (err != ERR_ECMDUNKNOWN ||
296 cmd != CMD_CAPABILITY)
297 printk(KERN_ERR "Error %d devcmd %d\n",
298 err, _CMD_N(cmd));
299 return err;
01f2e4ea
SF		 300 }
301
302 if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
303 rmb();
304 *a0 = readq(&devcmd->args[0]);
305 *a1 = readq(&devcmd->args[1]);
306 }
307
308 return 0;
309 }
310 }
311
312 printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd));
313 return -ETIMEDOUT;
314}
315
5e4232ee 316static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
27372bf5
SF		 317{
318 u64 a0 = (u32)cmd, a1 = 0;
319 int wait = 1000;
320 int err;
321
322 err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
323
324 return !(err || a0);
325}
326
01f2e4ea
SF		 327int vnic_dev_fw_info(struct vnic_dev *vdev,
328 struct vnic_devcmd_fw_info **fw_info)
329{
330 u64 a0, a1 = 0;
331 int wait = 1000;
332 int err = 0;
333
334 if (!vdev->fw_info) {
335 vdev->fw_info = pci_alloc_consistent(vdev->pdev,
336 sizeof(struct vnic_devcmd_fw_info),
337 &vdev->fw_info_pa);
338 if (!vdev->fw_info)
339 return -ENOMEM;
340
341 a0 = vdev->fw_info_pa;
342
343 /* only get fw_info once and cache it */
344 err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait);
345 }
346
347 *fw_info = vdev->fw_info;
348
349 return err;
350}
351
4badc385
SF		 352int vnic_dev_hw_version(struct vnic_dev *vdev, enum vnic_dev_hw_version *hw_ver)
353{
354 struct vnic_devcmd_fw_info *fw_info;
355 int err;
356
357 err = vnic_dev_fw_info(vdev, &fw_info);
358 if (err)
359 return err;
360
361 if (strncmp(fw_info->hw_version, "A1", sizeof("A1")) == 0)
362 *hw_ver = VNIC_DEV_HW_VER_A1;
363 else if (strncmp(fw_info->hw_version, "A2", sizeof("A2")) == 0)
364 *hw_ver = VNIC_DEV_HW_VER_A2;
365 else
366 *hw_ver = VNIC_DEV_HW_VER_UNKNOWN;
367
368 return 0;
369}
370
01f2e4ea
SF		 371int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
372 void *value)
373{
374 u64 a0, a1;
375 int wait = 1000;
376 int err;
377
378 a0 = offset;
379 a1 = size;
380
381 err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
382
383 switch (size) {
384 case 1: *(u8 *)value = (u8)a0; break;
385 case 2: *(u16 *)value = (u16)a0; break;
386 case 4: *(u32 *)value = (u32)a0; break;
387 case 8: *(u64 *)value = a0; break;
388 default: BUG(); break;
389 }
390
391 return err;
392}
393
394int vnic_dev_stats_clear(struct vnic_dev *vdev)
395{
396 u64 a0 = 0, a1 = 0;
397 int wait = 1000;
398 return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
399}
400
401int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
402{
403 u64 a0, a1;
404 int wait = 1000;
405
406 if (!vdev->stats) {
407 vdev->stats = pci_alloc_consistent(vdev->pdev,
408 sizeof(struct vnic_stats), &vdev->stats_pa);
409 if (!vdev->stats)
410 return -ENOMEM;
411 }
412
413 *stats = vdev->stats;
414 a0 = vdev->stats_pa;
415 a1 = sizeof(struct vnic_stats);
416
417 return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
418}
419
420int vnic_dev_close(struct vnic_dev *vdev)
421{
422 u64 a0 = 0, a1 = 0;
423 int wait = 1000;
424 return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
425}
426
427int vnic_dev_enable(struct vnic_dev *vdev)
428{
429 u64 a0 = 0, a1 = 0;
430 int wait = 1000;
431 return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
432}
433
434int vnic_dev_disable(struct vnic_dev *vdev)
435{
436 u64 a0 = 0, a1 = 0;
437 int wait = 1000;
438 return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
439}
440
441int vnic_dev_open(struct vnic_dev *vdev, int arg)
442{
443 u64 a0 = (u32)arg, a1 = 0;
444 int wait = 1000;
445 return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
446}
447
448int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
449{
450 u64 a0 = 0, a1 = 0;
451 int wait = 1000;
452 int err;
453
454 *done = 0;
455
456 err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
457 if (err)
458 return err;
459
460 *done = (a0 == 0);
461
462 return 0;
463}
464
465int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
466{
467 u64 a0 = (u32)arg, a1 = 0;
468 int wait = 1000;
469 return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
470}
471
472int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
473{
474 u64 a0 = 0, a1 = 0;
475 int wait = 1000;
476 int err;
477
478 *done = 0;
479
480 err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
481 if (err)
482 return err;
483
484 *done = (a0 == 0);
485
486 return 0;
487}
488
489int vnic_dev_hang_notify(struct vnic_dev *vdev)
490{
491 u64 a0, a1;
492 int wait = 1000;
493 return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
494}
495
496int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
497{
498 u64 a0, a1;
499 int wait = 1000;
500 int err, i;
501
502 for (i = 0; i < ETH_ALEN; i++)
503 mac_addr[i] = 0;
504
505 err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
506 if (err)
507 return err;
508
509 for (i = 0; i < ETH_ALEN; i++)
510 mac_addr[i] = ((u8 *)&a0)[i];
511
512 return 0;
513}
514
515void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
516 int broadcast, int promisc, int allmulti)
517{
518 u64 a0, a1 = 0;
519 int wait = 1000;
520 int err;
521
522 a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
523 (multicast ? CMD_PFILTER_MULTICAST : 0) |
524 (broadcast ? CMD_PFILTER_BROADCAST : 0) |
525 (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
526 (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
527
528 err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
529 if (err)
530 printk(KERN_ERR "Can't set packet filter\n");
531}
532
f8bd9091 533int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
01f2e4ea
SF		 534{
535 u64 a0 = 0, a1 = 0;
536 int wait = 1000;
537 int err;
538 int i;
539
540 for (i = 0; i < ETH_ALEN; i++)
541 ((u8 *)&a0)[i] = addr[i];
542
543 err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
544 if (err)
7c510e4b 545 printk(KERN_ERR "Can't add addr [%pM], %d\n", addr, err);
f8bd9091
SF		 546
547 return err;
01f2e4ea
SF		 548}
549
f8bd9091 550int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
01f2e4ea
SF		 551{
552 u64 a0 = 0, a1 = 0;
553 int wait = 1000;
554 int err;
555 int i;
556
557 for (i = 0; i < ETH_ALEN; i++)
558 ((u8 *)&a0)[i] = addr[i];
559
560 err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
561 if (err)
7c510e4b 562 printk(KERN_ERR "Can't del addr [%pM], %d\n", addr, err);
f8bd9091
SF		 563
564 return err;
01f2e4ea
SF		 565}
566
f8cac14a
VK		 567int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
568 u8 ig_vlan_rewrite_mode)
569{
570 u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
571 int wait = 1000;
572 int err;
573
574 err = vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE, &a0, &a1, wait);
575 if (err == ERR_ECMDUNKNOWN)
576 return 0;
577
578 return err;
579}
580
d73149f5
SF		 581int vnic_dev_raise_intr(struct vnic_dev *vdev, u16 intr)
582{
583 u64 a0 = intr, a1 = 0;
584 int wait = 1000;
585 int err;
586
587 err = vnic_dev_cmd(vdev, CMD_IAR, &a0, &a1, wait);
588 if (err)
589 printk(KERN_ERR "Failed to raise INTR[%d], err %d\n",
590 intr, err);
591
592 return err;
593}
594
d883aa76
VK		 595int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
596 void *notify_addr, dma_addr_t notify_pa, u16 intr)
01f2e4ea
SF		 597{
598 u64 a0, a1;
599 int wait = 1000;
27372bf5 600 int r;
01f2e4ea 601
d883aa76
VK		 602 memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
603 vdev->notify = notify_addr;
604 vdev->notify_pa = notify_pa;
01f2e4ea 605
d883aa76 606 a0 = (u64)notify_pa;
01f2e4ea
SF		 607 a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
608 a1 += sizeof(struct vnic_devcmd_notify);
609
27372bf5
SF		 610 r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
611 vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
612 return r;
01f2e4ea
SF		 613}
614
d883aa76
VK		 615int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
616{
617 void *notify_addr;
618 dma_addr_t notify_pa;
619
620 if (vdev->notify || vdev->notify_pa) {
621 printk(KERN_ERR "notify block %p still allocated",
622 vdev->notify);
623 return -EINVAL;
624 }
625
626 notify_addr = pci_alloc_consistent(vdev->pdev,
627 sizeof(struct vnic_devcmd_notify),
628 &notify_pa);
629 if (!notify_addr)
630 return -ENOMEM;
631
632 return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
633}
634
635void vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
01f2e4ea
SF		 636{
637 u64 a0, a1;
638 int wait = 1000;
639
640 a0 = 0; /* paddr = 0 to unset notify buffer */
641 a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
642 a1 += sizeof(struct vnic_devcmd_notify);
643
644 vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
d883aa76
VK		 645 vdev->notify = NULL;
646 vdev->notify_pa = 0;
27372bf5 647 vdev->notify_sz = 0;
01f2e4ea
SF		 648}
649
d883aa76
VK		 650void vnic_dev_notify_unset(struct vnic_dev *vdev)
651{
652 if (vdev->notify) {
653 pci_free_consistent(vdev->pdev,
654 sizeof(struct vnic_devcmd_notify),
655 vdev->notify,
656 vdev->notify_pa);
657 }
658
659 vnic_dev_notify_unsetcmd(vdev);
660}
661
01f2e4ea
SF		 662static int vnic_dev_notify_ready(struct vnic_dev *vdev)
663{
664 u32 *words;
27372bf5 665 unsigned int nwords = vdev->notify_sz / 4;
01f2e4ea
SF		 666 unsigned int i;
667 u32 csum;
668
27372bf5 669 if (!vdev->notify || !vdev->notify_sz)
01f2e4ea
SF		 670 return 0;
671
672 do {
673 csum = 0;
27372bf5 674 memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
01f2e4ea
SF		 675 words = (u32 *)&vdev->notify_copy;
676 for (i = 1; i < nwords; i++)
677 csum += words[i];
678 } while (csum != words[0]);
679
680 return 1;
681}
682
683int vnic_dev_init(struct vnic_dev *vdev, int arg)
684{
685 u64 a0 = (u32)arg, a1 = 0;
686 int wait = 1000;
4cdc44a2 687 int r = 0;
27372bf5 688
4cdc44a2 689 if (vdev->cap_flags & VNIC_DEV_CAP_INIT)
27372bf5
SF		 690 r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
691 else {
692 vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
693 if (a0 & CMD_INITF_DEFAULT_MAC) {
694 // Emulate these for old CMD_INIT_v1 which
695 // didn't pass a0 so no CMD_INITF_*.
696 vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
697 vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
698 }
4cdc44a2
SF		 699 }
700 return r;
01f2e4ea
SF		 701}
702
f8bd9091
SF		 703int vnic_dev_init_done(struct vnic_dev *vdev, int *done, int *err)
704{
705 u64 a0 = 0, a1 = 0;
706 int wait = 1000;
707 int ret;
708
709 *done = 0;
710
711 ret = vnic_dev_cmd(vdev, CMD_INIT_STATUS, &a0, &a1, wait);
712 if (ret)
713 return ret;
714
715 *done = (a0 == 0);
716
717 *err = (a0 == 0) ? a1 : 0;
718
719 return 0;
720}
721
722int vnic_dev_init_prov(struct vnic_dev *vdev, u8 *buf, u32 len)
723{
724 u64 a0, a1 = len;
725 int wait = 1000;
d49aba84 726 dma_addr_t prov_pa;
f8bd9091
SF		 727 void *prov_buf;
728 int ret;
729
730 prov_buf = pci_alloc_consistent(vdev->pdev, len, &prov_pa);
731 if (!prov_buf)
732 return -ENOMEM;
733
734 memcpy(prov_buf, buf, len);
735
736 a0 = prov_pa;
737
738 ret = vnic_dev_cmd(vdev, CMD_INIT_PROV_INFO, &a0, &a1, wait);
739
740 pci_free_consistent(vdev->pdev, len, prov_buf, prov_pa);
741
742 return ret;
743}
744
745int vnic_dev_deinit(struct vnic_dev *vdev)
746{
747 u64 a0 = 0, a1 = 0;
748 int wait = 1000;
749
750 return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
751}
752
01f2e4ea
SF		 753int vnic_dev_link_status(struct vnic_dev *vdev)
754{
755 if (vdev->linkstatus)
756 return *vdev->linkstatus;
757
758 if (!vnic_dev_notify_ready(vdev))
759 return 0;
760
761 return vdev->notify_copy.link_state;
762}
763
764u32 vnic_dev_port_speed(struct vnic_dev *vdev)
765{
766 if (!vnic_dev_notify_ready(vdev))
767 return 0;
768
769 return vdev->notify_copy.port_speed;
770}
771
772u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
773{
774 if (!vnic_dev_notify_ready(vdev))
775 return 0;
776
777 return vdev->notify_copy.msglvl;
778}
779
780u32 vnic_dev_mtu(struct vnic_dev *vdev)
781{
782 if (!vnic_dev_notify_ready(vdev))
783 return 0;
784
785 return vdev->notify_copy.mtu;
786}
787
4cdc44a2
SF		 788u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev)
789{
790 if (!vnic_dev_notify_ready(vdev))
791 return 0;
792
793 return vdev->notify_copy.link_down_cnt;
794}
795
796u32 vnic_dev_notify_status(struct vnic_dev *vdev)
797{
798 if (!vnic_dev_notify_ready(vdev))
799 return 0;
800
801 return vdev->notify_copy.status;
802}
803
01f2e4ea
SF		 804void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
805 enum vnic_dev_intr_mode intr_mode)
806{
807 vdev->intr_mode = intr_mode;
808}
809
810enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
811 struct vnic_dev *vdev)
812{
813 return vdev->intr_mode;
814}
815
816void vnic_dev_unregister(struct vnic_dev *vdev)
817{
818 if (vdev) {
819 if (vdev->notify)
820 pci_free_consistent(vdev->pdev,
821 sizeof(struct vnic_devcmd_notify),
822 vdev->notify,
823 vdev->notify_pa);
824 if (vdev->linkstatus)
825 pci_free_consistent(vdev->pdev,
826 sizeof(u32),
827 vdev->linkstatus,
828 vdev->linkstatus_pa);
829 if (vdev->stats)
830 pci_free_consistent(vdev->pdev,
831 sizeof(struct vnic_dev),
832 vdev->stats, vdev->stats_pa);
833 if (vdev->fw_info)
834 pci_free_consistent(vdev->pdev,
835 sizeof(struct vnic_devcmd_fw_info),
836 vdev->fw_info, vdev->fw_info_pa);
837 kfree(vdev);
838 }
839}
840
841struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
27e6c7d3
SF		 842 void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
843 unsigned int num_bars)
01f2e4ea
SF		 844{
845 if (!vdev) {
846 vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
847 if (!vdev)
848 return NULL;
849 }
850
851 vdev->priv = priv;
852 vdev->pdev = pdev;
853
27e6c7d3 854 if (vnic_dev_discover_res(vdev, bar, num_bars))
01f2e4ea
SF		 855 goto err_out;
856
857 vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
858 if (!vdev->devcmd)
859 goto err_out;
860
4cdc44a2
SF		 861 vdev->cap_flags = 0;
862
863 if (vnic_dev_capable(vdev, CMD_INIT))
864 vdev->cap_flags |= VNIC_DEV_CAP_INIT;
865
01f2e4ea
SF		 866 return vdev;
867
868err_out:
869 vnic_dev_unregister(vdev);
870 return NULL;
871}
872
27372bf5 873
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