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enic: Clean ups
[net-next-2.6.git] / drivers / net / enic / enic_main.c
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01f2e4ea 1/*
29046f9b 2 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
01f2e4ea
SF		 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/module.h>
21#include <linux/kernel.h>
22#include <linux/string.h>
23#include <linux/errno.h>
24#include <linux/types.h>
25#include <linux/init.h>
26#include <linux/workqueue.h>
27#include <linux/pci.h>
28#include <linux/netdevice.h>
29#include <linux/etherdevice.h>
30#include <linux/if_ether.h>
31#include <linux/if_vlan.h>
32#include <linux/ethtool.h>
33#include <linux/in.h>
34#include <linux/ip.h>
35#include <linux/ipv6.h>
36#include <linux/tcp.h>
29046f9b 37#include <linux/rtnetlink.h>
b7c6bfb7 38#include <net/ip6_checksum.h>
01f2e4ea
SF		 39
40#include "cq_enet_desc.h"
41#include "vnic_dev.h"
42#include "vnic_intr.h"
43#include "vnic_stats.h"
f8bd9091 44#include "vnic_vic.h"
01f2e4ea
SF		 45#include "enic_res.h"
46#include "enic.h"
47
48#define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ)
ea0d7d91
SF		 49#define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS)
50#define MAX_TSO (1 << 16)
51#define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1)
52
53#define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
f8bd9091 54#define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */
01f2e4ea
SF		 55
56/* Supported devices */
a3aa1884 57static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = {
ea0d7d91 58 { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) },
f8bd9091 59 { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) },
01f2e4ea
SF		 60 { 0, } /* end of table */
61};
62
63MODULE_DESCRIPTION(DRV_DESCRIPTION);
64MODULE_AUTHOR("Scott Feldman <scofeldm@cisco.com>");
65MODULE_LICENSE("GPL");
66MODULE_VERSION(DRV_VERSION);
67MODULE_DEVICE_TABLE(pci, enic_id_table);
68
69struct enic_stat {
70 char name[ETH_GSTRING_LEN];
71 unsigned int offset;
72};
73
74#define ENIC_TX_STAT(stat) \
75 { .name = #stat, .offset = offsetof(struct vnic_tx_stats, stat) / 8 }
76#define ENIC_RX_STAT(stat) \
77 { .name = #stat, .offset = offsetof(struct vnic_rx_stats, stat) / 8 }
78
79static const struct enic_stat enic_tx_stats[] = {
80 ENIC_TX_STAT(tx_frames_ok),
81 ENIC_TX_STAT(tx_unicast_frames_ok),
82 ENIC_TX_STAT(tx_multicast_frames_ok),
83 ENIC_TX_STAT(tx_broadcast_frames_ok),
84 ENIC_TX_STAT(tx_bytes_ok),
85 ENIC_TX_STAT(tx_unicast_bytes_ok),
86 ENIC_TX_STAT(tx_multicast_bytes_ok),
87 ENIC_TX_STAT(tx_broadcast_bytes_ok),
88 ENIC_TX_STAT(tx_drops),
89 ENIC_TX_STAT(tx_errors),
90 ENIC_TX_STAT(tx_tso),
91};
92
93static const struct enic_stat enic_rx_stats[] = {
94 ENIC_RX_STAT(rx_frames_ok),
95 ENIC_RX_STAT(rx_frames_total),
96 ENIC_RX_STAT(rx_unicast_frames_ok),
97 ENIC_RX_STAT(rx_multicast_frames_ok),
98 ENIC_RX_STAT(rx_broadcast_frames_ok),
99 ENIC_RX_STAT(rx_bytes_ok),
100 ENIC_RX_STAT(rx_unicast_bytes_ok),
101 ENIC_RX_STAT(rx_multicast_bytes_ok),
102 ENIC_RX_STAT(rx_broadcast_bytes_ok),
103 ENIC_RX_STAT(rx_drop),
104 ENIC_RX_STAT(rx_no_bufs),
105 ENIC_RX_STAT(rx_errors),
106 ENIC_RX_STAT(rx_rss),
107 ENIC_RX_STAT(rx_crc_errors),
108 ENIC_RX_STAT(rx_frames_64),
109 ENIC_RX_STAT(rx_frames_127),
110 ENIC_RX_STAT(rx_frames_255),
111 ENIC_RX_STAT(rx_frames_511),
112 ENIC_RX_STAT(rx_frames_1023),
113 ENIC_RX_STAT(rx_frames_1518),
114 ENIC_RX_STAT(rx_frames_to_max),
115};
116
117static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
118static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
119
f8bd9091
SF		 120static int enic_is_dynamic(struct enic *enic)
121{
122 return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN;
123}
124
01f2e4ea
SF		 125static int enic_get_settings(struct net_device *netdev,
126 struct ethtool_cmd *ecmd)
127{
128 struct enic *enic = netdev_priv(netdev);
129
130 ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
131 ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
132 ecmd->port = PORT_FIBRE;
133 ecmd->transceiver = XCVR_EXTERNAL;
134
135 if (netif_carrier_ok(netdev)) {
136 ecmd->speed = vnic_dev_port_speed(enic->vdev);
137 ecmd->duplex = DUPLEX_FULL;
138 } else {
139 ecmd->speed = -1;
140 ecmd->duplex = -1;
141 }
142
143 ecmd->autoneg = AUTONEG_DISABLE;
144
145 return 0;
146}
147
383ab92f
VK		 148static int enic_dev_fw_info(struct enic *enic,
149 struct vnic_devcmd_fw_info **fw_info)
150{
151 int err;
152
153 spin_lock(&enic->devcmd_lock);
154 err = vnic_dev_fw_info(enic->vdev, fw_info);
155 spin_unlock(&enic->devcmd_lock);
156
157 return err;
158}
159
01f2e4ea
SF		 160static void enic_get_drvinfo(struct net_device *netdev,
161 struct ethtool_drvinfo *drvinfo)
162{
163 struct enic *enic = netdev_priv(netdev);
164 struct vnic_devcmd_fw_info *fw_info;
165
383ab92f 166 enic_dev_fw_info(enic, &fw_info);
01f2e4ea
SF		 167
168 strncpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
169 strncpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
170 strncpy(drvinfo->fw_version, fw_info->fw_version,
171 sizeof(drvinfo->fw_version));
172 strncpy(drvinfo->bus_info, pci_name(enic->pdev),
173 sizeof(drvinfo->bus_info));
174}
175
176static void enic_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
177{
178 unsigned int i;
179
180 switch (stringset) {
181 case ETH_SS_STATS:
182 for (i = 0; i < enic_n_tx_stats; i++) {
183 memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
184 data += ETH_GSTRING_LEN;
185 }
186 for (i = 0; i < enic_n_rx_stats; i++) {
187 memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
188 data += ETH_GSTRING_LEN;
189 }
190 break;
191 }
192}
193
25f0a061 194static int enic_get_sset_count(struct net_device *netdev, int sset)
01f2e4ea 195{
25f0a061
SF		 196 switch (sset) {
197 case ETH_SS_STATS:
198 return enic_n_tx_stats + enic_n_rx_stats;
199 default:
200 return -EOPNOTSUPP;
201 }
01f2e4ea
SF		 202}
203
383ab92f
VK		 204static int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats)
205{
206 int err;
207
208 spin_lock(&enic->devcmd_lock);
209 err = vnic_dev_stats_dump(enic->vdev, vstats);
210 spin_unlock(&enic->devcmd_lock);
211
212 return err;
213}
214
01f2e4ea
SF		 215static void enic_get_ethtool_stats(struct net_device *netdev,
216 struct ethtool_stats *stats, u64 *data)
217{
218 struct enic *enic = netdev_priv(netdev);
219 struct vnic_stats *vstats;
220 unsigned int i;
221
383ab92f 222 enic_dev_stats_dump(enic, &vstats);
01f2e4ea
SF		 223
224 for (i = 0; i < enic_n_tx_stats; i++)
225 *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].offset];
226 for (i = 0; i < enic_n_rx_stats; i++)
227 *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].offset];
228}
229
230static u32 enic_get_rx_csum(struct net_device *netdev)
231{
232 struct enic *enic = netdev_priv(netdev);
233 return enic->csum_rx_enabled;
234}
235
236static int enic_set_rx_csum(struct net_device *netdev, u32 data)
237{
238 struct enic *enic = netdev_priv(netdev);
239
25f0a061
SF		 240 if (data && !ENIC_SETTING(enic, RXCSUM))
241 return -EINVAL;
242
243 enic->csum_rx_enabled = !!data;
01f2e4ea
SF		 244
245 return 0;
246}
247
248static int enic_set_tx_csum(struct net_device *netdev, u32 data)
249{
250 struct enic *enic = netdev_priv(netdev);
251
25f0a061
SF		 252 if (data && !ENIC_SETTING(enic, TXCSUM))
253 return -EINVAL;
254
255 if (data)
01f2e4ea
SF		 256 netdev->features |= NETIF_F_HW_CSUM;
257 else
258 netdev->features &= ~NETIF_F_HW_CSUM;
259
260 return 0;
261}
262
263static int enic_set_tso(struct net_device *netdev, u32 data)
264{
265 struct enic *enic = netdev_priv(netdev);
266
25f0a061
SF		 267 if (data && !ENIC_SETTING(enic, TSO))
268 return -EINVAL;
269
270 if (data)
01f2e4ea
SF		 271 netdev->features |=
272 NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN;
273 else
274 netdev->features &=
275 ~(NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN);
276
277 return 0;
278}
279
280static u32 enic_get_msglevel(struct net_device *netdev)
281{
282 struct enic *enic = netdev_priv(netdev);
283 return enic->msg_enable;
284}
285
286static void enic_set_msglevel(struct net_device *netdev, u32 value)
287{
288 struct enic *enic = netdev_priv(netdev);
289 enic->msg_enable = value;
290}
291
7c844599
SF		 292static int enic_get_coalesce(struct net_device *netdev,
293 struct ethtool_coalesce *ecmd)
294{
295 struct enic *enic = netdev_priv(netdev);
296
297 ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
298 ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
299
300 return 0;
301}
302
303static int enic_set_coalesce(struct net_device *netdev,
304 struct ethtool_coalesce *ecmd)
305{
306 struct enic *enic = netdev_priv(netdev);
307 u32 tx_coalesce_usecs;
308 u32 rx_coalesce_usecs;
309
310 tx_coalesce_usecs = min_t(u32,
311 INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
312 ecmd->tx_coalesce_usecs);
313 rx_coalesce_usecs = min_t(u32,
314 INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
315 ecmd->rx_coalesce_usecs);
316
317 switch (vnic_dev_get_intr_mode(enic->vdev)) {
318 case VNIC_DEV_INTR_MODE_INTX:
319 if (tx_coalesce_usecs != rx_coalesce_usecs)
320 return -EINVAL;
321
322 vnic_intr_coalescing_timer_set(&enic->intr[ENIC_INTX_WQ_RQ],
323 INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
324 break;
325 case VNIC_DEV_INTR_MODE_MSI:
326 if (tx_coalesce_usecs != rx_coalesce_usecs)
327 return -EINVAL;
328
329 vnic_intr_coalescing_timer_set(&enic->intr[0],
330 INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
331 break;
332 case VNIC_DEV_INTR_MODE_MSIX:
333 vnic_intr_coalescing_timer_set(&enic->intr[ENIC_MSIX_WQ],
334 INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
335 vnic_intr_coalescing_timer_set(&enic->intr[ENIC_MSIX_RQ],
336 INTR_COALESCE_USEC_TO_HW(rx_coalesce_usecs));
337 break;
338 default:
339 break;
340 }
341
342 enic->tx_coalesce_usecs = tx_coalesce_usecs;
343 enic->rx_coalesce_usecs = rx_coalesce_usecs;
344
345 return 0;
346}
347
0fc0b732 348static const struct ethtool_ops enic_ethtool_ops = {
01f2e4ea
SF		 349 .get_settings = enic_get_settings,
350 .get_drvinfo = enic_get_drvinfo,
351 .get_msglevel = enic_get_msglevel,
352 .set_msglevel = enic_set_msglevel,
353 .get_link = ethtool_op_get_link,
354 .get_strings = enic_get_strings,
25f0a061 355 .get_sset_count = enic_get_sset_count,
01f2e4ea
SF		 356 .get_ethtool_stats = enic_get_ethtool_stats,
357 .get_rx_csum = enic_get_rx_csum,
358 .set_rx_csum = enic_set_rx_csum,
359 .get_tx_csum = ethtool_op_get_tx_csum,
360 .set_tx_csum = enic_set_tx_csum,
361 .get_sg = ethtool_op_get_sg,
362 .set_sg = ethtool_op_set_sg,
363 .get_tso = ethtool_op_get_tso,
364 .set_tso = enic_set_tso,
7c844599
SF		 365 .get_coalesce = enic_get_coalesce,
366 .set_coalesce = enic_set_coalesce,
86ca9db7
SF		 367 .get_flags = ethtool_op_get_flags,
368 .set_flags = ethtool_op_set_flags,
01f2e4ea
SF		 369};
370
371static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
372{
373 struct enic *enic = vnic_dev_priv(wq->vdev);
374
375 if (buf->sop)
376 pci_unmap_single(enic->pdev, buf->dma_addr,
377 buf->len, PCI_DMA_TODEVICE);
378 else
379 pci_unmap_page(enic->pdev, buf->dma_addr,
380 buf->len, PCI_DMA_TODEVICE);
381
382 if (buf->os_buf)
383 dev_kfree_skb_any(buf->os_buf);
384}
385
386static void enic_wq_free_buf(struct vnic_wq *wq,
387 struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque)
388{
389 enic_free_wq_buf(wq, buf);
390}
391
392static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
393 u8 type, u16 q_number, u16 completed_index, void *opaque)
394{
395 struct enic *enic = vnic_dev_priv(vdev);
396
397 spin_lock(&enic->wq_lock[q_number]);
398
399 vnic_wq_service(&enic->wq[q_number], cq_desc,
400 completed_index, enic_wq_free_buf,
401 opaque);
402
403 if (netif_queue_stopped(enic->netdev) &&
ea0d7d91
SF		 404 vnic_wq_desc_avail(&enic->wq[q_number]) >=
405 (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS))
01f2e4ea
SF		 406 netif_wake_queue(enic->netdev);
407
408 spin_unlock(&enic->wq_lock[q_number]);
409
410 return 0;
411}
412
413static void enic_log_q_error(struct enic *enic)
414{
415 unsigned int i;
416 u32 error_status;
417
418 for (i = 0; i < enic->wq_count; i++) {
419 error_status = vnic_wq_error_status(&enic->wq[i]);
420 if (error_status)
a7a79deb
VK		 421 netdev_err(enic->netdev, "WQ[%d] error_status %d\n",
422 i, error_status);
01f2e4ea
SF		 423 }
424
425 for (i = 0; i < enic->rq_count; i++) {
426 error_status = vnic_rq_error_status(&enic->rq[i]);
427 if (error_status)
a7a79deb
VK		 428 netdev_err(enic->netdev, "RQ[%d] error_status %d\n",
429 i, error_status);
01f2e4ea
SF		 430 }
431}
432
383ab92f 433static void enic_msglvl_check(struct enic *enic)
01f2e4ea 434{
383ab92f 435 u32 msg_enable = vnic_dev_msg_lvl(enic->vdev);
01f2e4ea 436
383ab92f 437 if (msg_enable != enic->msg_enable) {
a7a79deb
VK		 438 netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n",
439 enic->msg_enable, msg_enable);
383ab92f 440 enic->msg_enable = msg_enable;
01f2e4ea
SF		 441 }
442}
443
444static void enic_mtu_check(struct enic *enic)
445{
446 u32 mtu = vnic_dev_mtu(enic->vdev);
a7a79deb 447 struct net_device *netdev = enic->netdev;
01f2e4ea 448
491598a4 449 if (mtu && mtu != enic->port_mtu) {
7c844599 450 enic->port_mtu = mtu;
a7a79deb
VK		 451 if (mtu < netdev->mtu)
452 netdev_warn(netdev,
453 "interface MTU (%d) set higher "
01f2e4ea 454 "than switch port MTU (%d)\n",
a7a79deb 455 netdev->mtu, mtu);
01f2e4ea
SF		 456 }
457}
458
383ab92f 459static void enic_link_check(struct enic *enic)
01f2e4ea 460{
383ab92f
VK		 461 int link_status = vnic_dev_link_status(enic->vdev);
462 int carrier_ok = netif_carrier_ok(enic->netdev);
01f2e4ea 463
383ab92f 464 if (link_status && !carrier_ok) {
a7a79deb 465 netdev_info(enic->netdev, "Link UP\n");
383ab92f
VK		 466 netif_carrier_on(enic->netdev);
467 } else if (!link_status && carrier_ok) {
a7a79deb 468 netdev_info(enic->netdev, "Link DOWN\n");
383ab92f 469 netif_carrier_off(enic->netdev);
01f2e4ea
SF		 470 }
471}
472
473static void enic_notify_check(struct enic *enic)
474{
475 enic_msglvl_check(enic);
476 enic_mtu_check(enic);
477 enic_link_check(enic);
478}
479
480#define ENIC_TEST_INTR(pba, i) (pba & (1 << i))
481
482static irqreturn_t enic_isr_legacy(int irq, void *data)
483{
484 struct net_device *netdev = data;
485 struct enic *enic = netdev_priv(netdev);
486 u32 pba;
487
488 vnic_intr_mask(&enic->intr[ENIC_INTX_WQ_RQ]);
489
490 pba = vnic_intr_legacy_pba(enic->legacy_pba);
491 if (!pba) {
492 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
493 return IRQ_NONE; /* not our interrupt */
494 }
495
ed8af6b2
SF		 496 if (ENIC_TEST_INTR(pba, ENIC_INTX_NOTIFY)) {
497 vnic_intr_return_all_credits(&enic->intr[ENIC_INTX_NOTIFY]);
01f2e4ea 498 enic_notify_check(enic);
ed8af6b2 499 }
01f2e4ea
SF		 500
501 if (ENIC_TEST_INTR(pba, ENIC_INTX_ERR)) {
ed8af6b2 502 vnic_intr_return_all_credits(&enic->intr[ENIC_INTX_ERR]);
01f2e4ea
SF		 503 enic_log_q_error(enic);
504 /* schedule recovery from WQ/RQ error */
505 schedule_work(&enic->reset);
506 return IRQ_HANDLED;
507 }
508
509 if (ENIC_TEST_INTR(pba, ENIC_INTX_WQ_RQ)) {
288379f0
BH		 510 if (napi_schedule_prep(&enic->napi))
511 __napi_schedule(&enic->napi);
01f2e4ea
SF		 512 } else {
513 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
514 }
515
516 return IRQ_HANDLED;
517}
518
519static irqreturn_t enic_isr_msi(int irq, void *data)
520{
521 struct enic *enic = data;
522
523 /* With MSI, there is no sharing of interrupts, so this is
524 * our interrupt and there is no need to ack it. The device
525 * is not providing per-vector masking, so the OS will not
526 * write to PCI config space to mask/unmask the interrupt.
527 * We're using mask_on_assertion for MSI, so the device
528 * automatically masks the interrupt when the interrupt is
529 * generated. Later, when exiting polling, the interrupt
530 * will be unmasked (see enic_poll).
531 *
532 * Also, the device uses the same PCIe Traffic Class (TC)
533 * for Memory Write data and MSI, so there are no ordering
534 * issues; the MSI will always arrive at the Root Complex
535 * _after_ corresponding Memory Writes (i.e. descriptor
536 * writes).
537 */
538
288379f0 539 napi_schedule(&enic->napi);
01f2e4ea
SF		 540
541 return IRQ_HANDLED;
542}
543
544static irqreturn_t enic_isr_msix_rq(int irq, void *data)
545{
546 struct enic *enic = data;
547
548 /* schedule NAPI polling for RQ cleanup */
288379f0 549 napi_schedule(&enic->napi);
01f2e4ea
SF		 550
551 return IRQ_HANDLED;
552}
553
554static irqreturn_t enic_isr_msix_wq(int irq, void *data)
555{
556 struct enic *enic = data;
557 unsigned int wq_work_to_do = -1; /* no limit */
558 unsigned int wq_work_done;
559
560 wq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
561 wq_work_to_do, enic_wq_service, NULL);
562
563 vnic_intr_return_credits(&enic->intr[ENIC_MSIX_WQ],
564 wq_work_done,
565 1 /* unmask intr */,
566 1 /* reset intr timer */);
567
568 return IRQ_HANDLED;
569}
570
571static irqreturn_t enic_isr_msix_err(int irq, void *data)
572{
573 struct enic *enic = data;
574
ed8af6b2
SF		 575 vnic_intr_return_all_credits(&enic->intr[ENIC_MSIX_ERR]);
576
01f2e4ea
SF		 577 enic_log_q_error(enic);
578
579 /* schedule recovery from WQ/RQ error */
580 schedule_work(&enic->reset);
581
582 return IRQ_HANDLED;
583}
584
585static irqreturn_t enic_isr_msix_notify(int irq, void *data)
586{
587 struct enic *enic = data;
588
ed8af6b2 589 vnic_intr_return_all_credits(&enic->intr[ENIC_MSIX_NOTIFY]);
01f2e4ea 590 enic_notify_check(enic);
01f2e4ea
SF		 591
592 return IRQ_HANDLED;
593}
594
595static inline void enic_queue_wq_skb_cont(struct enic *enic,
596 struct vnic_wq *wq, struct sk_buff *skb,
1825aca6 597 unsigned int len_left, int loopback)
01f2e4ea
SF		 598{
599 skb_frag_t *frag;
600
601 /* Queue additional data fragments */
602 for (frag = skb_shinfo(skb)->frags; len_left; frag++) {
603 len_left -= frag->size;
604 enic_queue_wq_desc_cont(wq, skb,
605 pci_map_page(enic->pdev, frag->page,
606 frag->page_offset, frag->size,
607 PCI_DMA_TODEVICE),
608 frag->size,
1825aca6
VK		 609 (len_left == 0), /* EOP? */
610 loopback);
01f2e4ea
SF		 611 }
612}
613
614static inline void enic_queue_wq_skb_vlan(struct enic *enic,
615 struct vnic_wq *wq, struct sk_buff *skb,
1825aca6 616 int vlan_tag_insert, unsigned int vlan_tag, int loopback)
01f2e4ea
SF		 617{
618 unsigned int head_len = skb_headlen(skb);
619 unsigned int len_left = skb->len - head_len;
620 int eop = (len_left == 0);
621
ea0d7d91
SF		 622 /* Queue the main skb fragment. The fragments are no larger
623 * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less
624 * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor
625 * per fragment is queued.
626 */
01f2e4ea
SF		 627 enic_queue_wq_desc(wq, skb,
628 pci_map_single(enic->pdev, skb->data,
629 head_len, PCI_DMA_TODEVICE),
630 head_len,
631 vlan_tag_insert, vlan_tag,
1825aca6 632 eop, loopback);
01f2e4ea
SF		 633
634 if (!eop)
1825aca6 635 enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback);
01f2e4ea
SF		 636}
637
638static inline void enic_queue_wq_skb_csum_l4(struct enic *enic,
639 struct vnic_wq *wq, struct sk_buff *skb,
1825aca6 640 int vlan_tag_insert, unsigned int vlan_tag, int loopback)
01f2e4ea
SF		 641{
642 unsigned int head_len = skb_headlen(skb);
643 unsigned int len_left = skb->len - head_len;
644 unsigned int hdr_len = skb_transport_offset(skb);
645 unsigned int csum_offset = hdr_len + skb->csum_offset;
646 int eop = (len_left == 0);
647
ea0d7d91
SF		 648 /* Queue the main skb fragment. The fragments are no larger
649 * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less
650 * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor
651 * per fragment is queued.
652 */
01f2e4ea
SF		 653 enic_queue_wq_desc_csum_l4(wq, skb,
654 pci_map_single(enic->pdev, skb->data,
655 head_len, PCI_DMA_TODEVICE),
656 head_len,
657 csum_offset,
658 hdr_len,
659 vlan_tag_insert, vlan_tag,
1825aca6 660 eop, loopback);
01f2e4ea
SF		 661
662 if (!eop)
1825aca6 663 enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback);
01f2e4ea
SF		 664}
665
666static inline void enic_queue_wq_skb_tso(struct enic *enic,
667 struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss,
1825aca6 668 int vlan_tag_insert, unsigned int vlan_tag, int loopback)
01f2e4ea 669{
ea0d7d91
SF		 670 unsigned int frag_len_left = skb_headlen(skb);
671 unsigned int len_left = skb->len - frag_len_left;
01f2e4ea
SF		 672 unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
673 int eop = (len_left == 0);
ea0d7d91
SF		 674 unsigned int len;
675 dma_addr_t dma_addr;
676 unsigned int offset = 0;
677 skb_frag_t *frag;
01f2e4ea
SF		 678
679 /* Preload TCP csum field with IP pseudo hdr calculated
680 * with IP length set to zero. HW will later add in length
681 * to each TCP segment resulting from the TSO.
682 */
683
09640e63 684 if (skb->protocol == cpu_to_be16(ETH_P_IP)) {
01f2e4ea
SF		 685 ip_hdr(skb)->check = 0;
686 tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr,
687 ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
09640e63 688 } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) {
01f2e4ea
SF		 689 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
690 &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
691 }
692
ea0d7d91
SF		 693 /* Queue WQ_ENET_MAX_DESC_LEN length descriptors
694 * for the main skb fragment
695 */
696 while (frag_len_left) {
697 len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN);
698 dma_addr = pci_map_single(enic->pdev, skb->data + offset,
699 len, PCI_DMA_TODEVICE);
700 enic_queue_wq_desc_tso(wq, skb,
701 dma_addr,
702 len,
703 mss, hdr_len,
704 vlan_tag_insert, vlan_tag,
1825aca6 705 eop && (len == frag_len_left), loopback);
ea0d7d91
SF		 706 frag_len_left -= len;
707 offset += len;
708 }
01f2e4ea 709
ea0d7d91
SF		 710 if (eop)
711 return;
712
713 /* Queue WQ_ENET_MAX_DESC_LEN length descriptors
714 * for additional data fragments
715 */
716 for (frag = skb_shinfo(skb)->frags; len_left; frag++) {
717 len_left -= frag->size;
718 frag_len_left = frag->size;
719 offset = frag->page_offset;
720
721 while (frag_len_left) {
722 len = min(frag_len_left,
723 (unsigned int)WQ_ENET_MAX_DESC_LEN);
724 dma_addr = pci_map_page(enic->pdev, frag->page,
725 offset, len,
726 PCI_DMA_TODEVICE);
727 enic_queue_wq_desc_cont(wq, skb,
728 dma_addr,
729 len,
730 (len_left == 0) &&
1825aca6
VK		 731 (len == frag_len_left), /* EOP? */
732 loopback);
ea0d7d91
SF		 733 frag_len_left -= len;
734 offset += len;
735 }
736 }
01f2e4ea
SF		 737}
738
739static inline void enic_queue_wq_skb(struct enic *enic,
740 struct vnic_wq *wq, struct sk_buff *skb)
741{
742 unsigned int mss = skb_shinfo(skb)->gso_size;
743 unsigned int vlan_tag = 0;
744 int vlan_tag_insert = 0;
1825aca6 745 int loopback = 0;
01f2e4ea
SF		 746
747 if (enic->vlan_group && vlan_tx_tag_present(skb)) {
748 /* VLAN tag from trunking driver */
749 vlan_tag_insert = 1;
750 vlan_tag = vlan_tx_tag_get(skb);
1825aca6
VK		 751 } else if (enic->loop_enable) {
752 vlan_tag = enic->loop_tag;
753 loopback = 1;
01f2e4ea
SF		 754 }
755
756 if (mss)
757 enic_queue_wq_skb_tso(enic, wq, skb, mss,
1825aca6 758 vlan_tag_insert, vlan_tag, loopback);
01f2e4ea
SF		 759 else if (skb->ip_summed == CHECKSUM_PARTIAL)
760 enic_queue_wq_skb_csum_l4(enic, wq, skb,
1825aca6 761 vlan_tag_insert, vlan_tag, loopback);
01f2e4ea
SF		 762 else
763 enic_queue_wq_skb_vlan(enic, wq, skb,
1825aca6 764 vlan_tag_insert, vlan_tag, loopback);
01f2e4ea
SF		 765}
766
ed8af6b2 767/* netif_tx_lock held, process context with BHs disabled, or BH */
61357325 768static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
d87fd25d 769 struct net_device *netdev)
01f2e4ea
SF		 770{
771 struct enic *enic = netdev_priv(netdev);
772 struct vnic_wq *wq = &enic->wq[0];
773 unsigned long flags;
774
775 if (skb->len <= 0) {
776 dev_kfree_skb(skb);
777 return NETDEV_TX_OK;
778 }
779
780 /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs,
781 * which is very likely. In the off chance it's going to take
782 * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb.
783 */
784
785 if (skb_shinfo(skb)->gso_size == 0 &&
786 skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC &&
787 skb_linearize(skb)) {
788 dev_kfree_skb(skb);
789 return NETDEV_TX_OK;
790 }
791
792 spin_lock_irqsave(&enic->wq_lock[0], flags);
793
ea0d7d91
SF		 794 if (vnic_wq_desc_avail(wq) <
795 skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) {
01f2e4ea
SF		 796 netif_stop_queue(netdev);
797 /* This is a hard error, log it */
a7a79deb 798 netdev_err(netdev, "BUG! Tx ring full when queue awake!\n");
01f2e4ea
SF		 799 spin_unlock_irqrestore(&enic->wq_lock[0], flags);
800 return NETDEV_TX_BUSY;
801 }
802
803 enic_queue_wq_skb(enic, wq, skb);
804
ea0d7d91 805 if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)
01f2e4ea
SF		 806 netif_stop_queue(netdev);
807
01f2e4ea
SF		 808 spin_unlock_irqrestore(&enic->wq_lock[0], flags);
809
810 return NETDEV_TX_OK;
811}
812
813/* dev_base_lock rwlock held, nominally process context */
814static struct net_device_stats *enic_get_stats(struct net_device *netdev)
815{
816 struct enic *enic = netdev_priv(netdev);
25f0a061 817 struct net_device_stats *net_stats = &netdev->stats;
01f2e4ea
SF		 818 struct vnic_stats *stats;
819
383ab92f 820 enic_dev_stats_dump(enic, &stats);
01f2e4ea 821
25f0a061
SF		 822 net_stats->tx_packets = stats->tx.tx_frames_ok;
823 net_stats->tx_bytes = stats->tx.tx_bytes_ok;
824 net_stats->tx_errors = stats->tx.tx_errors;
825 net_stats->tx_dropped = stats->tx.tx_drops;
01f2e4ea 826
25f0a061
SF		 827 net_stats->rx_packets = stats->rx.rx_frames_ok;
828 net_stats->rx_bytes = stats->rx.rx_bytes_ok;
829 net_stats->rx_errors = stats->rx.rx_errors;
830 net_stats->multicast = stats->rx.rx_multicast_frames_ok;
350991e1 831 net_stats->rx_over_errors = enic->rq_truncated_pkts;
bd9fb1a4 832 net_stats->rx_crc_errors = enic->rq_bad_fcs;
350991e1 833 net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop;
01f2e4ea 834
25f0a061 835 return net_stats;
01f2e4ea
SF		 836}
837
99ef5639 838static void enic_reset_multicast_list(struct enic *enic)
01f2e4ea
SF		 839{
840 enic->mc_count = 0;
99ef5639 841 enic->flags = 0;
01f2e4ea
SF		 842}
843
844static int enic_set_mac_addr(struct net_device *netdev, char *addr)
845{
f8bd9091
SF		 846 struct enic *enic = netdev_priv(netdev);
847
848 if (enic_is_dynamic(enic)) {
849 if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr))
850 return -EADDRNOTAVAIL;
851 } else {
852 if (!is_valid_ether_addr(addr))
853 return -EADDRNOTAVAIL;
854 }
01f2e4ea
SF		 855
856 memcpy(netdev->dev_addr, addr, netdev->addr_len);
857
858 return 0;
859}
860
f8bd9091
SF		 861static int enic_dev_add_station_addr(struct enic *enic)
862{
863 int err = 0;
864
865 if (is_valid_ether_addr(enic->netdev->dev_addr)) {
866 spin_lock(&enic->devcmd_lock);
867 err = vnic_dev_add_addr(enic->vdev, enic->netdev->dev_addr);
868 spin_unlock(&enic->devcmd_lock);
869 }
870
871 return err;
872}
873
874static int enic_dev_del_station_addr(struct enic *enic)
875{
876 int err = 0;
877
878 if (is_valid_ether_addr(enic->netdev->dev_addr)) {
879 spin_lock(&enic->devcmd_lock);
880 err = vnic_dev_del_addr(enic->vdev, enic->netdev->dev_addr);
881 spin_unlock(&enic->devcmd_lock);
882 }
883
884 return err;
885}
886
887static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p)
888{
889 struct enic *enic = netdev_priv(netdev);
890 struct sockaddr *saddr = p;
891 char *addr = saddr->sa_data;
892 int err;
893
894 if (netif_running(enic->netdev)) {
895 err = enic_dev_del_station_addr(enic);
896 if (err)
897 return err;
898 }
899
900 err = enic_set_mac_addr(netdev, addr);
901 if (err)
902 return err;
903
904 if (netif_running(enic->netdev)) {
905 err = enic_dev_add_station_addr(enic);
906 if (err)
907 return err;
908 }
909
910 return err;
911}
912
913static int enic_set_mac_address(struct net_device *netdev, void *p)
914{
915 return -EOPNOTSUPP;
916}
917
383ab92f
VK		 918static int enic_dev_packet_filter(struct enic *enic, int directed,
919 int multicast, int broadcast, int promisc, int allmulti)
920{
921 int err;
922
923 spin_lock(&enic->devcmd_lock);
924 err = vnic_dev_packet_filter(enic->vdev, directed,
925 multicast, broadcast, promisc, allmulti);
926 spin_unlock(&enic->devcmd_lock);
927
928 return err;
929}
930
931static int enic_dev_add_multicast_addr(struct enic *enic, u8 *addr)
932{
933 int err;
934
935 spin_lock(&enic->devcmd_lock);
936 err = vnic_dev_add_addr(enic->vdev, addr);
937 spin_unlock(&enic->devcmd_lock);
938
939 return err;
940}
941
942static int enic_dev_del_multicast_addr(struct enic *enic, u8 *addr)
943{
944 int err;
945
946 spin_lock(&enic->devcmd_lock);
947 err = vnic_dev_del_addr(enic->vdev, addr);
948 spin_unlock(&enic->devcmd_lock);
949
950 return err;
951}
952
01f2e4ea
SF		 953/* netif_tx_lock held, BHs disabled */
954static void enic_set_multicast_list(struct net_device *netdev)
955{
956 struct enic *enic = netdev_priv(netdev);
22bedad3 957 struct netdev_hw_addr *ha;
01f2e4ea
SF		 958 int directed = 1;
959 int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0;
960 int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0;
961 int promisc = (netdev->flags & IFF_PROMISC) ? 1 : 0;
4cd24eaf 962 unsigned int mc_count = netdev_mc_count(netdev);
01f2e4ea 963 int allmulti = (netdev->flags & IFF_ALLMULTI) ||
641cb85e 964 mc_count > ENIC_MULTICAST_PERFECT_FILTERS;
9959a185 965 unsigned int flags = netdev->flags | (allmulti ? IFF_ALLMULTI : 0);
01f2e4ea 966 u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN];
01f2e4ea
SF		 967 unsigned int i, j;
968
969 if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS)
970 mc_count = ENIC_MULTICAST_PERFECT_FILTERS;
971
9959a185
SF		 972 if (enic->flags != flags) {
973 enic->flags = flags;
383ab92f 974 enic_dev_packet_filter(enic, directed,
9959a185
SF		 975 multicast, broadcast, promisc, allmulti);
976 }
01f2e4ea
SF		 977
978 /* Is there an easier way? Trying to minimize to
979 * calls to add/del multicast addrs. We keep the
980 * addrs from the last call in enic->mc_addr and
981 * look for changes to add/del.
982 */
983
48e2f183 984 i = 0;
22bedad3 985 netdev_for_each_mc_addr(ha, netdev) {
48e2f183
JP		 986 if (i == mc_count)
987 break;
22bedad3 988 memcpy(mc_addr[i++], ha->addr, ETH_ALEN);
01f2e4ea
SF		 989 }
990
991 for (i = 0; i < enic->mc_count; i++) {
992 for (j = 0; j < mc_count; j++)
993 if (compare_ether_addr(enic->mc_addr[i],
994 mc_addr[j]) == 0)
995 break;
996 if (j == mc_count)
383ab92f 997 enic_dev_del_multicast_addr(enic, enic->mc_addr[i]);
01f2e4ea
SF		 998 }
999
1000 for (i = 0; i < mc_count; i++) {
1001 for (j = 0; j < enic->mc_count; j++)
1002 if (compare_ether_addr(mc_addr[i],
1003 enic->mc_addr[j]) == 0)
1004 break;
1005 if (j == enic->mc_count)
383ab92f 1006 enic_dev_add_multicast_addr(enic, mc_addr[i]);
01f2e4ea
SF		 1007 }
1008
1009 /* Save the list to compare against next time
1010 */
1011
1012 for (i = 0; i < mc_count; i++)
1013 memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN);
1014
1015 enic->mc_count = mc_count;
01f2e4ea
SF		 1016}
1017
1018/* rtnl lock is held */
1019static void enic_vlan_rx_register(struct net_device *netdev,
1020 struct vlan_group *vlan_group)
1021{
1022 struct enic *enic = netdev_priv(netdev);
1023 enic->vlan_group = vlan_group;
1024}
1025
1026/* rtnl lock is held */
1027static void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1028{
1029 struct enic *enic = netdev_priv(netdev);
1030
1031 spin_lock(&enic->devcmd_lock);
1032 enic_add_vlan(enic, vid);
1033 spin_unlock(&enic->devcmd_lock);
1034}
1035
1036/* rtnl lock is held */
1037static void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1038{
1039 struct enic *enic = netdev_priv(netdev);
1040
1041 spin_lock(&enic->devcmd_lock);
1042 enic_del_vlan(enic, vid);
1043 spin_unlock(&enic->devcmd_lock);
1044}
1045
1046/* netif_tx_lock held, BHs disabled */
1047static void enic_tx_timeout(struct net_device *netdev)
1048{
1049 struct enic *enic = netdev_priv(netdev);
1050 schedule_work(&enic->reset);
1051}
1052
f8bd9091
SF		 1053static int enic_vnic_dev_deinit(struct enic *enic)
1054{
1055 int err;
1056
1057 spin_lock(&enic->devcmd_lock);
1058 err = vnic_dev_deinit(enic->vdev);
1059 spin_unlock(&enic->devcmd_lock);
1060
1061 return err;
1062}
1063
1064static int enic_dev_init_prov(struct enic *enic, struct vic_provinfo *vp)
1065{
1066 int err;
1067
1068 spin_lock(&enic->devcmd_lock);
1069 err = vnic_dev_init_prov(enic->vdev,
1070 (u8 *)vp, vic_provinfo_size(vp));
1071 spin_unlock(&enic->devcmd_lock);
1072
1073 return err;
1074}
1075
1076static int enic_dev_init_done(struct enic *enic, int *done, int *error)
1077{
1078 int err;
1079
1080 spin_lock(&enic->devcmd_lock);
1081 err = vnic_dev_init_done(enic->vdev, done, error);
1082 spin_unlock(&enic->devcmd_lock);
1083
1084 return err;
1085}
1086
08f382eb 1087static int enic_set_port_profile(struct enic *enic, u8 *mac)
f8bd9091
SF		 1088{
1089 struct vic_provinfo *vp;
1090 u8 oui[3] = VIC_PROVINFO_CISCO_OUI;
6fc7f573 1091 u8 *uuid;
f8bd9091 1092 char uuid_str[38];
6fc7f573
SF		 1093 static char *uuid_fmt = "%02X%02X%02X%02X-%02X%02X-%02X%02X-"
1094 "%02X%02X-%02X%02X%02X%02X%0X%02X";
f8bd9091
SF		 1095 int err;
1096
08f382eb
SF		 1097 err = enic_vnic_dev_deinit(enic);
1098 if (err)
1099 return err;
f8bd9091 1100
08f382eb 1101 switch (enic->pp.request) {
f8bd9091 1102
08f382eb 1103 case PORT_REQUEST_ASSOCIATE:
f8bd9091 1104
08f382eb
SF		 1105 if (!(enic->pp.set & ENIC_SET_NAME) || !strlen(enic->pp.name))
1106 return -EINVAL;
f8bd9091 1107
08f382eb
SF		 1108 if (!is_valid_ether_addr(mac))
1109 return -EADDRNOTAVAIL;
f8bd9091 1110
08f382eb
SF		 1111 vp = vic_provinfo_alloc(GFP_KERNEL, oui,
1112 VIC_PROVINFO_LINUX_TYPE);
1113 if (!vp)
1114 return -ENOMEM;
f8bd9091 1115
f8bd9091 1116 vic_provinfo_add_tlv(vp,
08f382eb
SF		 1117 VIC_LINUX_PROV_TLV_PORT_PROFILE_NAME_STR,
1118 strlen(enic->pp.name) + 1, enic->pp.name);
f8bd9091 1119
08f382eb
SF		 1120 vic_provinfo_add_tlv(vp,
1121 VIC_LINUX_PROV_TLV_CLIENT_MAC_ADDR,
1122 ETH_ALEN, mac);
1123
1124 if (enic->pp.set & ENIC_SET_INSTANCE) {
1125 uuid = enic->pp.instance_uuid;
1126 sprintf(uuid_str, uuid_fmt,
1127 uuid[0], uuid[1], uuid[2], uuid[3],
1128 uuid[4], uuid[5], uuid[6], uuid[7],
1129 uuid[8], uuid[9], uuid[10], uuid[11],
1130 uuid[12], uuid[13], uuid[14], uuid[15]);
1131 vic_provinfo_add_tlv(vp,
1132 VIC_LINUX_PROV_TLV_CLIENT_UUID_STR,
1133 sizeof(uuid_str), uuid_str);
1134 }
f8bd9091 1135
08f382eb
SF		 1136 if (enic->pp.set & ENIC_SET_HOST) {
1137 uuid = enic->pp.host_uuid;
1138 sprintf(uuid_str, uuid_fmt,
1139 uuid[0], uuid[1], uuid[2], uuid[3],
1140 uuid[4], uuid[5], uuid[6], uuid[7],
1141 uuid[8], uuid[9], uuid[10], uuid[11],
1142 uuid[12], uuid[13], uuid[14], uuid[15]);
1143 vic_provinfo_add_tlv(vp,
1144 VIC_LINUX_PROV_TLV_HOST_UUID_STR,
1145 sizeof(uuid_str), uuid_str);
1146 }
f8bd9091 1147
08f382eb
SF		 1148 err = enic_dev_init_prov(enic, vp);
1149 vic_provinfo_free(vp);
1150 if (err)
1151 return err;
1152 break;
f8bd9091 1153
08f382eb
SF		 1154 case PORT_REQUEST_DISASSOCIATE:
1155 break;
f8bd9091 1156
08f382eb
SF		 1157 default:
1158 return -EINVAL;
1159 }
f8bd9091 1160
08f382eb
SF		 1161 enic->pp.set |= ENIC_SET_APPLIED;
1162 return 0;
f8bd9091
SF		 1163}
1164
1165static int enic_set_vf_port(struct net_device *netdev, int vf,
1166 struct nlattr *port[])
1167{
1168 struct enic *enic = netdev_priv(netdev);
08f382eb
SF		 1169
1170 memset(&enic->pp, 0, sizeof(enic->pp));
1171
1172 if (port[IFLA_PORT_REQUEST]) {
1173 enic->pp.set |= ENIC_SET_REQUEST;
1174 enic->pp.request = nla_get_u8(port[IFLA_PORT_REQUEST]);
1175 }
1176
1177 if (port[IFLA_PORT_PROFILE]) {
1178 enic->pp.set |= ENIC_SET_NAME;
1179 memcpy(enic->pp.name, nla_data(port[IFLA_PORT_PROFILE]),
1180 PORT_PROFILE_MAX);
1181 }
1182
1183 if (port[IFLA_PORT_INSTANCE_UUID]) {
1184 enic->pp.set |= ENIC_SET_INSTANCE;
1185 memcpy(enic->pp.instance_uuid,
1186 nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX);
1187 }
1188
1189 if (port[IFLA_PORT_HOST_UUID]) {
1190 enic->pp.set |= ENIC_SET_HOST;
1191 memcpy(enic->pp.host_uuid,
1192 nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX);
1193 }
f8bd9091
SF		 1194
1195 /* don't support VFs, yet */
1196 if (vf != PORT_SELF_VF)
1197 return -EOPNOTSUPP;
1198
08f382eb
SF		 1199 if (!(enic->pp.set & ENIC_SET_REQUEST))
1200 return -EOPNOTSUPP;
f8bd9091 1201
08f382eb 1202 if (enic->pp.request == PORT_REQUEST_ASSOCIATE) {
f8bd9091 1203
418c437d
SF		 1204 /* If the interface mac addr hasn't been assigned,
1205 * assign a random mac addr before setting port-
1206 * profile.
1207 */
1208
1209 if (is_zero_ether_addr(netdev->dev_addr))
1210 random_ether_addr(netdev->dev_addr);
f8bd9091
SF		 1211 }
1212
08f382eb 1213 return enic_set_port_profile(enic, netdev->dev_addr);
f8bd9091
SF		 1214}
1215
1216static int enic_get_vf_port(struct net_device *netdev, int vf,
1217 struct sk_buff *skb)
1218{
1219 struct enic *enic = netdev_priv(netdev);
1220 int err, error, done;
1221 u16 response = PORT_PROFILE_RESPONSE_SUCCESS;
1222
08f382eb
SF		 1223 if (!(enic->pp.set & ENIC_SET_APPLIED))
1224 return -ENODATA;
f8bd9091
SF		 1225
1226 err = enic_dev_init_done(enic, &done, &error);
f8bd9091 1227 if (err)
08f382eb 1228 error = err;
f8bd9091
SF		 1229
1230 switch (error) {
1231 case ERR_SUCCESS:
1232 if (!done)
1233 response = PORT_PROFILE_RESPONSE_INPROGRESS;
1234 break;
1235 case ERR_EINVAL:
1236 response = PORT_PROFILE_RESPONSE_INVALID;
1237 break;
1238 case ERR_EBADSTATE:
1239 response = PORT_PROFILE_RESPONSE_BADSTATE;
1240 break;
1241 case ERR_ENOMEM:
1242 response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES;
1243 break;
1244 default:
1245 response = PORT_PROFILE_RESPONSE_ERROR;
1246 break;
1247 }
1248
1249 NLA_PUT_U16(skb, IFLA_PORT_REQUEST, enic->pp.request);
1250 NLA_PUT_U16(skb, IFLA_PORT_RESPONSE, response);
08f382eb
SF		 1251 if (enic->pp.set & ENIC_SET_NAME)
1252 NLA_PUT(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX,
1253 enic->pp.name);
1254 if (enic->pp.set & ENIC_SET_INSTANCE)
1255 NLA_PUT(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX,
1256 enic->pp.instance_uuid);
1257 if (enic->pp.set & ENIC_SET_HOST)
1258 NLA_PUT(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX,
1259 enic->pp.host_uuid);
f8bd9091
SF		 1260
1261 return 0;
1262
1263nla_put_failure:
1264 return -EMSGSIZE;
1265}
1266
01f2e4ea
SF		 1267static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
1268{
1269 struct enic *enic = vnic_dev_priv(rq->vdev);
1270
1271 if (!buf->os_buf)
1272 return;
1273
1274 pci_unmap_single(enic->pdev, buf->dma_addr,
1275 buf->len, PCI_DMA_FROMDEVICE);
1276 dev_kfree_skb_any(buf->os_buf);
1277}
1278
01f2e4ea
SF		 1279static int enic_rq_alloc_buf(struct vnic_rq *rq)
1280{
1281 struct enic *enic = vnic_dev_priv(rq->vdev);
d19e22dc 1282 struct net_device *netdev = enic->netdev;
01f2e4ea 1283 struct sk_buff *skb;
1825aca6 1284 unsigned int len = netdev->mtu + VLAN_ETH_HLEN;
01f2e4ea
SF		 1285 unsigned int os_buf_index = 0;
1286 dma_addr_t dma_addr;
1287
89d71a66 1288 skb = netdev_alloc_skb_ip_align(netdev, len);
01f2e4ea
SF		 1289 if (!skb)
1290 return -ENOMEM;
1291
1292 dma_addr = pci_map_single(enic->pdev, skb->data,
1293 len, PCI_DMA_FROMDEVICE);
1294
1295 enic_queue_rq_desc(rq, skb, os_buf_index,
1296 dma_addr, len);
1297
1298 return 0;
1299}
1300
4badc385
SF		 1301static int enic_rq_alloc_buf_a1(struct vnic_rq *rq)
1302{
1303 struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
1304
1305 if (vnic_rq_posting_soon(rq)) {
1306
1307 /* SW workaround for A0 HW erratum: if we're just about
1308 * to write posted_index, insert a dummy desc
1309 * of type resvd
1310 */
1311
1312 rq_enet_desc_enc(desc, 0, RQ_ENET_TYPE_RESV2, 0);
1313 vnic_rq_post(rq, 0, 0, 0, 0);
1314 } else {
1315 return enic_rq_alloc_buf(rq);
1316 }
1317
1318 return 0;
1319}
1320
383ab92f
VK		 1321static int enic_dev_hw_version(struct enic *enic,
1322 enum vnic_dev_hw_version *hw_ver)
1323{
1324 int err;
1325
1326 spin_lock(&enic->devcmd_lock);
1327 err = vnic_dev_hw_version(enic->vdev, hw_ver);
1328 spin_unlock(&enic->devcmd_lock);
1329
1330 return err;
1331}
1332
4badc385
SF		 1333static int enic_set_rq_alloc_buf(struct enic *enic)
1334{
1335 enum vnic_dev_hw_version hw_ver;
1336 int err;
1337
383ab92f 1338 err = enic_dev_hw_version(enic, &hw_ver);
4badc385
SF		 1339 if (err)
1340 return err;
1341
1342 switch (hw_ver) {
1343 case VNIC_DEV_HW_VER_A1:
1344 enic->rq_alloc_buf = enic_rq_alloc_buf_a1;
1345 break;
1346 case VNIC_DEV_HW_VER_A2:
1347 case VNIC_DEV_HW_VER_UNKNOWN:
1348 enic->rq_alloc_buf = enic_rq_alloc_buf;
1349 break;
1350 default:
1351 return -ENODEV;
1352 }
1353
1354 return 0;
1355}
1356
01f2e4ea
SF		 1357static void enic_rq_indicate_buf(struct vnic_rq *rq,
1358 struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
1359 int skipped, void *opaque)
1360{
1361 struct enic *enic = vnic_dev_priv(rq->vdev);
86ca9db7 1362 struct net_device *netdev = enic->netdev;
01f2e4ea
SF		 1363 struct sk_buff *skb;
1364
1365 u8 type, color, eop, sop, ingress_port, vlan_stripped;
1366 u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof;
1367 u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
1368 u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc;
1369 u8 packet_error;
f8cac14a 1370 u16 q_number, completed_index, bytes_written, vlan_tci, checksum;
01f2e4ea
SF		 1371 u32 rss_hash;
1372
1373 if (skipped)
1374 return;
1375
1376 skb = buf->os_buf;
1377 prefetch(skb->data - NET_IP_ALIGN);
1378 pci_unmap_single(enic->pdev, buf->dma_addr,
1379 buf->len, PCI_DMA_FROMDEVICE);
1380
1381 cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
1382 &type, &color, &q_number, &completed_index,
1383 &ingress_port, &fcoe, &eop, &sop, &rss_type,
1384 &csum_not_calc, &rss_hash, &bytes_written,
f8cac14a 1385 &packet_error, &vlan_stripped, &vlan_tci, &checksum,
01f2e4ea
SF		 1386 &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error,
1387 &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp,
1388 &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment,
1389 &fcs_ok);
1390
1391 if (packet_error) {
1392
350991e1
SF		 1393 if (!fcs_ok) {
1394 if (bytes_written > 0)
1395 enic->rq_bad_fcs++;
1396 else if (bytes_written == 0)
1397 enic->rq_truncated_pkts++;
1398 }
01f2e4ea
SF		 1399
1400 dev_kfree_skb_any(skb);
1401
1402 return;
1403 }
1404
1405 if (eop && bytes_written > 0) {
1406
1407 /* Good receive
1408 */
1409
1410 skb_put(skb, bytes_written);
86ca9db7 1411 skb->protocol = eth_type_trans(skb, netdev);
01f2e4ea
SF		 1412
1413 if (enic->csum_rx_enabled && !csum_not_calc) {
1414 skb->csum = htons(checksum);
1415 skb->ip_summed = CHECKSUM_COMPLETE;
1416 }
1417
86ca9db7 1418 skb->dev = netdev;
01f2e4ea 1419
f8cac14a
VK		 1420 if (enic->vlan_group && vlan_stripped &&
1421 (vlan_tci & CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK)) {
01f2e4ea 1422
88132f55
VK		 1423 if (netdev->features & NETIF_F_GRO)
1424 vlan_gro_receive(&enic->napi, enic->vlan_group,
f8cac14a 1425 vlan_tci, skb);
01f2e4ea
SF		 1426 else
1427 vlan_hwaccel_receive_skb(skb,
f8cac14a 1428 enic->vlan_group, vlan_tci);
01f2e4ea
SF		 1429
1430 } else {
1431
88132f55
VK		 1432 if (netdev->features & NETIF_F_GRO)
1433 napi_gro_receive(&enic->napi, skb);
01f2e4ea
SF		 1434 else
1435 netif_receive_skb(skb);
1436
1437 }
1438
1439 } else {
1440
1441 /* Buffer overflow
1442 */
1443
1444 dev_kfree_skb_any(skb);
1445 }
1446}
1447
1448static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
1449 u8 type, u16 q_number, u16 completed_index, void *opaque)
1450{
1451 struct enic *enic = vnic_dev_priv(vdev);
1452
1453 vnic_rq_service(&enic->rq[q_number], cq_desc,
1454 completed_index, VNIC_RQ_RETURN_DESC,
1455 enic_rq_indicate_buf, opaque);
1456
1457 return 0;
1458}
1459
01f2e4ea
SF		 1460static int enic_poll(struct napi_struct *napi, int budget)
1461{
1462 struct enic *enic = container_of(napi, struct enic, napi);
01f2e4ea
SF		 1463 unsigned int rq_work_to_do = budget;
1464 unsigned int wq_work_to_do = -1; /* no limit */
1465 unsigned int work_done, rq_work_done, wq_work_done;
2d6ddced 1466 int err;
01f2e4ea
SF		 1467
1468 /* Service RQ (first) and WQ
1469 */
1470
1471 rq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
1472 rq_work_to_do, enic_rq_service, NULL);
1473
1474 wq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
1475 wq_work_to_do, enic_wq_service, NULL);
1476
1477 /* Accumulate intr event credits for this polling
1478 * cycle. An intr event is the completion of a
1479 * a WQ or RQ packet.
1480 */
1481
1482 work_done = rq_work_done + wq_work_done;
1483
1484 if (work_done > 0)
1485 vnic_intr_return_credits(&enic->intr[ENIC_INTX_WQ_RQ],
1486 work_done,
1487 0 /* don't unmask intr */,
1488 0 /* don't reset intr timer */);
1489
2d6ddced 1490 err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
01f2e4ea 1491
2d6ddced
SF		 1492 /* Buffer allocation failed. Stay in polling
1493 * mode so we can try to fill the ring again.
1494 */
01f2e4ea 1495
2d6ddced
SF		 1496 if (err)
1497 rq_work_done = rq_work_to_do;
01f2e4ea 1498
2d6ddced 1499 if (rq_work_done < rq_work_to_do) {
01f2e4ea 1500
2d6ddced 1501 /* Some work done, but not enough to stay in polling,
88132f55 1502 * exit polling
01f2e4ea
SF		 1503 */
1504
288379f0 1505 napi_complete(napi);
ed8af6b2 1506 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
01f2e4ea
SF		 1507 }
1508
1509 return rq_work_done;
1510}
1511
1512static int enic_poll_msix(struct napi_struct *napi, int budget)
1513{
1514 struct enic *enic = container_of(napi, struct enic, napi);
01f2e4ea
SF		 1515 unsigned int work_to_do = budget;
1516 unsigned int work_done;
2d6ddced 1517 int err;
01f2e4ea
SF		 1518
1519 /* Service RQ
1520 */
1521
1522 work_done = vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
1523 work_to_do, enic_rq_service, NULL);
1524
2d6ddced
SF		 1525 /* Return intr event credits for this polling
1526 * cycle. An intr event is the completion of a
1527 * RQ packet.
1528 */
01f2e4ea 1529
2d6ddced 1530 if (work_done > 0)
01f2e4ea
SF		 1531 vnic_intr_return_credits(&enic->intr[ENIC_MSIX_RQ],
1532 work_done,
1533 0 /* don't unmask intr */,
1534 0 /* don't reset intr timer */);
01f2e4ea 1535
2d6ddced
SF		 1536 err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
1537
1538 /* Buffer allocation failed. Stay in polling mode
1539 * so we can try to fill the ring again.
1540 */
1541
1542 if (err)
1543 work_done = work_to_do;
1544
1545 if (work_done < work_to_do) {
1546
1547 /* Some work done, but not enough to stay in polling,
88132f55 1548 * exit polling
01f2e4ea
SF		 1549 */
1550
288379f0 1551 napi_complete(napi);
01f2e4ea
SF		 1552 vnic_intr_unmask(&enic->intr[ENIC_MSIX_RQ]);
1553 }
1554
1555 return work_done;
1556}
1557
1558static void enic_notify_timer(unsigned long data)
1559{
1560 struct enic *enic = (struct enic *)data;
1561
1562 enic_notify_check(enic);
1563
25f0a061
SF		 1564 mod_timer(&enic->notify_timer,
1565 round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD));
01f2e4ea
SF		 1566}
1567
1568static void enic_free_intr(struct enic *enic)
1569{
1570 struct net_device *netdev = enic->netdev;
1571 unsigned int i;
1572
1573 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1574 case VNIC_DEV_INTR_MODE_INTX:
01f2e4ea
SF		 1575 free_irq(enic->pdev->irq, netdev);
1576 break;
8f4d248c
SF		 1577 case VNIC_DEV_INTR_MODE_MSI:
1578 free_irq(enic->pdev->irq, enic);
1579 break;
01f2e4ea
SF		 1580 case VNIC_DEV_INTR_MODE_MSIX:
1581 for (i = 0; i < ARRAY_SIZE(enic->msix); i++)
1582 if (enic->msix[i].requested)
1583 free_irq(enic->msix_entry[i].vector,
1584 enic->msix[i].devid);
1585 break;
1586 default:
1587 break;
1588 }
1589}
1590
1591static int enic_request_intr(struct enic *enic)
1592{
1593 struct net_device *netdev = enic->netdev;
1594 unsigned int i;
1595 int err = 0;
1596
1597 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1598
1599 case VNIC_DEV_INTR_MODE_INTX:
1600
1601 err = request_irq(enic->pdev->irq, enic_isr_legacy,
1602 IRQF_SHARED, netdev->name, netdev);
1603 break;
1604
1605 case VNIC_DEV_INTR_MODE_MSI:
1606
1607 err = request_irq(enic->pdev->irq, enic_isr_msi,
1608 0, netdev->name, enic);
1609 break;
1610
1611 case VNIC_DEV_INTR_MODE_MSIX:
1612
1613 sprintf(enic->msix[ENIC_MSIX_RQ].devname,
8f4d248c 1614 "%.11s-rx-0", netdev->name);
01f2e4ea
SF		 1615 enic->msix[ENIC_MSIX_RQ].isr = enic_isr_msix_rq;
1616 enic->msix[ENIC_MSIX_RQ].devid = enic;
1617
1618 sprintf(enic->msix[ENIC_MSIX_WQ].devname,
8f4d248c 1619 "%.11s-tx-0", netdev->name);
01f2e4ea
SF		 1620 enic->msix[ENIC_MSIX_WQ].isr = enic_isr_msix_wq;
1621 enic->msix[ENIC_MSIX_WQ].devid = enic;
1622
1623 sprintf(enic->msix[ENIC_MSIX_ERR].devname,
1624 "%.11s-err", netdev->name);
1625 enic->msix[ENIC_MSIX_ERR].isr = enic_isr_msix_err;
1626 enic->msix[ENIC_MSIX_ERR].devid = enic;
1627
1628 sprintf(enic->msix[ENIC_MSIX_NOTIFY].devname,
1629 "%.11s-notify", netdev->name);
1630 enic->msix[ENIC_MSIX_NOTIFY].isr = enic_isr_msix_notify;
1631 enic->msix[ENIC_MSIX_NOTIFY].devid = enic;
1632
1633 for (i = 0; i < ARRAY_SIZE(enic->msix); i++) {
1634 err = request_irq(enic->msix_entry[i].vector,
1635 enic->msix[i].isr, 0,
1636 enic->msix[i].devname,
1637 enic->msix[i].devid);
1638 if (err) {
1639 enic_free_intr(enic);
1640 break;
1641 }
1642 enic->msix[i].requested = 1;
1643 }
1644
1645 break;
1646
1647 default:
1648 break;
1649 }
1650
1651 return err;
1652}
1653
b3d18d19
SF		 1654static void enic_synchronize_irqs(struct enic *enic)
1655{
1656 unsigned int i;
1657
1658 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1659 case VNIC_DEV_INTR_MODE_INTX:
1660 case VNIC_DEV_INTR_MODE_MSI:
1661 synchronize_irq(enic->pdev->irq);
1662 break;
1663 case VNIC_DEV_INTR_MODE_MSIX:
1664 for (i = 0; i < enic->intr_count; i++)
1665 synchronize_irq(enic->msix_entry[i].vector);
1666 break;
1667 default:
1668 break;
1669 }
1670}
1671
383ab92f 1672static int enic_dev_notify_set(struct enic *enic)
01f2e4ea
SF		 1673{
1674 int err;
1675
56ac88b3 1676 spin_lock(&enic->devcmd_lock);
01f2e4ea
SF		 1677 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1678 case VNIC_DEV_INTR_MODE_INTX:
1679 err = vnic_dev_notify_set(enic->vdev, ENIC_INTX_NOTIFY);
1680 break;
1681 case VNIC_DEV_INTR_MODE_MSIX:
1682 err = vnic_dev_notify_set(enic->vdev, ENIC_MSIX_NOTIFY);
1683 break;
1684 default:
1685 err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */);
1686 break;
1687 }
56ac88b3 1688 spin_unlock(&enic->devcmd_lock);
01f2e4ea
SF		 1689
1690 return err;
1691}
1692
383ab92f
VK		 1693static int enic_dev_notify_unset(struct enic *enic)
1694{
1695 int err;
1696
1697 spin_lock(&enic->devcmd_lock);
1698 err = vnic_dev_notify_unset(enic->vdev);
1699 spin_unlock(&enic->devcmd_lock);
1700
1701 return err;
1702}
1703
1704static int enic_dev_enable(struct enic *enic)
1705{
1706 int err;
1707
1708 spin_lock(&enic->devcmd_lock);
1709 err = vnic_dev_enable(enic->vdev);
1710 spin_unlock(&enic->devcmd_lock);
1711
1712 return err;
1713}
1714
1715static int enic_dev_disable(struct enic *enic)
1716{
1717 int err;
1718
1719 spin_lock(&enic->devcmd_lock);
1720 err = vnic_dev_disable(enic->vdev);
1721 spin_unlock(&enic->devcmd_lock);
1722
1723 return err;
1724}
1725
01f2e4ea
SF		 1726static void enic_notify_timer_start(struct enic *enic)
1727{
1728 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1729 case VNIC_DEV_INTR_MODE_MSI:
1730 mod_timer(&enic->notify_timer, jiffies);
1731 break;
1732 default:
1733 /* Using intr for notification for INTx/MSI-X */
1734 break;
1735 };
1736}
1737
1738/* rtnl lock is held, process context */
1739static int enic_open(struct net_device *netdev)
1740{
1741 struct enic *enic = netdev_priv(netdev);
1742 unsigned int i;
1743 int err;
1744
4b75a442
SF		 1745 err = enic_request_intr(enic);
1746 if (err) {
a7a79deb 1747 netdev_err(netdev, "Unable to request irq.\n");
4b75a442
SF		 1748 return err;
1749 }
1750
383ab92f 1751 err = enic_dev_notify_set(enic);
4b75a442 1752 if (err) {
a7a79deb
VK		 1753 netdev_err(netdev,
1754 "Failed to alloc notify buffer, aborting.\n");
4b75a442
SF		 1755 goto err_out_free_intr;
1756 }
1757
01f2e4ea 1758 for (i = 0; i < enic->rq_count; i++) {
2d6ddced
SF		 1759 vnic_rq_fill(&enic->rq[i], enic->rq_alloc_buf);
1760 /* Need at least one buffer on ring to get going */
1761 if (vnic_rq_desc_used(&enic->rq[i]) == 0) {
a7a79deb 1762 netdev_err(netdev, "Unable to alloc receive buffers\n");
2d6ddced 1763 err = -ENOMEM;
4b75a442 1764 goto err_out_notify_unset;
01f2e4ea
SF		 1765 }
1766 }
1767
1768 for (i = 0; i < enic->wq_count; i++)
1769 vnic_wq_enable(&enic->wq[i]);
1770 for (i = 0; i < enic->rq_count; i++)
1771 vnic_rq_enable(&enic->rq[i]);
1772
f8bd9091 1773 enic_dev_add_station_addr(enic);
01f2e4ea
SF		 1774 enic_set_multicast_list(netdev);
1775
1776 netif_wake_queue(netdev);
1777 napi_enable(&enic->napi);
383ab92f 1778 enic_dev_enable(enic);
01f2e4ea
SF		 1779
1780 for (i = 0; i < enic->intr_count; i++)
1781 vnic_intr_unmask(&enic->intr[i]);
1782
1783 enic_notify_timer_start(enic);
1784
1785 return 0;
4b75a442
SF		 1786
1787err_out_notify_unset:
383ab92f 1788 enic_dev_notify_unset(enic);
4b75a442
SF		 1789err_out_free_intr:
1790 enic_free_intr(enic);
1791
1792 return err;
01f2e4ea
SF		 1793}
1794
1795/* rtnl lock is held, process context */
1796static int enic_stop(struct net_device *netdev)
1797{
1798 struct enic *enic = netdev_priv(netdev);
1799 unsigned int i;
1800 int err;
1801
29046f9b 1802 for (i = 0; i < enic->intr_count; i++) {
b3d18d19 1803 vnic_intr_mask(&enic->intr[i]);
29046f9b
VK		 1804 (void)vnic_intr_masked(&enic->intr[i]); /* flush write */
1805 }
b3d18d19
SF		 1806
1807 enic_synchronize_irqs(enic);
1808
01f2e4ea
SF		 1809 del_timer_sync(&enic->notify_timer);
1810
383ab92f 1811 enic_dev_disable(enic);
01f2e4ea 1812 napi_disable(&enic->napi);
b3d18d19
SF		 1813 netif_carrier_off(netdev);
1814 netif_tx_disable(netdev);
f8bd9091
SF		 1815 enic_dev_del_station_addr(enic);
1816
01f2e4ea
SF		 1817 for (i = 0; i < enic->wq_count; i++) {
1818 err = vnic_wq_disable(&enic->wq[i]);
1819 if (err)
1820 return err;
1821 }
1822 for (i = 0; i < enic->rq_count; i++) {
1823 err = vnic_rq_disable(&enic->rq[i]);
1824 if (err)
1825 return err;
1826 }
1827
383ab92f 1828 enic_dev_notify_unset(enic);
4b75a442
SF		 1829 enic_free_intr(enic);
1830
01f2e4ea
SF		 1831 for (i = 0; i < enic->wq_count; i++)
1832 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
1833 for (i = 0; i < enic->rq_count; i++)
1834 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
1835 for (i = 0; i < enic->cq_count; i++)
1836 vnic_cq_clean(&enic->cq[i]);
1837 for (i = 0; i < enic->intr_count; i++)
1838 vnic_intr_clean(&enic->intr[i]);
1839
1840 return 0;
1841}
1842
1843static int enic_change_mtu(struct net_device *netdev, int new_mtu)
1844{
1845 struct enic *enic = netdev_priv(netdev);
1846 int running = netif_running(netdev);
1847
25f0a061
SF		 1848 if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU)
1849 return -EINVAL;
1850
01f2e4ea
SF		 1851 if (running)
1852 enic_stop(netdev);
1853
01f2e4ea
SF		 1854 netdev->mtu = new_mtu;
1855
1856 if (netdev->mtu > enic->port_mtu)
a7a79deb
VK		 1857 netdev_warn(netdev,
1858 "interface MTU (%d) set higher than port MTU (%d)\n",
1859 netdev->mtu, enic->port_mtu);
01f2e4ea
SF		 1860
1861 if (running)
1862 enic_open(netdev);
1863
1864 return 0;
1865}
1866
1867#ifdef CONFIG_NET_POLL_CONTROLLER
1868static void enic_poll_controller(struct net_device *netdev)
1869{
1870 struct enic *enic = netdev_priv(netdev);
1871 struct vnic_dev *vdev = enic->vdev;
1872
1873 switch (vnic_dev_get_intr_mode(vdev)) {
1874 case VNIC_DEV_INTR_MODE_MSIX:
1875 enic_isr_msix_rq(enic->pdev->irq, enic);
1876 enic_isr_msix_wq(enic->pdev->irq, enic);
1877 break;
1878 case VNIC_DEV_INTR_MODE_MSI:
1879 enic_isr_msi(enic->pdev->irq, enic);
1880 break;
1881 case VNIC_DEV_INTR_MODE_INTX:
1882 enic_isr_legacy(enic->pdev->irq, netdev);
1883 break;
1884 default:
1885 break;
1886 }
1887}
1888#endif
1889
1890static int enic_dev_wait(struct vnic_dev *vdev,
1891 int (*start)(struct vnic_dev *, int),
1892 int (*finished)(struct vnic_dev *, int *),
1893 int arg)
1894{
1895 unsigned long time;
1896 int done;
1897 int err;
1898
1899 BUG_ON(in_interrupt());
1900
1901 err = start(vdev, arg);
1902 if (err)
1903 return err;
1904
1905 /* Wait for func to complete...2 seconds max
1906 */
1907
1908 time = jiffies + (HZ * 2);
1909 do {
1910
1911 err = finished(vdev, &done);
1912 if (err)
1913 return err;
1914
1915 if (done)
1916 return 0;
1917
1918 schedule_timeout_uninterruptible(HZ / 10);
1919
1920 } while (time_after(time, jiffies));
1921
1922 return -ETIMEDOUT;
1923}
1924
1925static int enic_dev_open(struct enic *enic)
1926{
1927 int err;
1928
1929 err = enic_dev_wait(enic->vdev, vnic_dev_open,
1930 vnic_dev_open_done, 0);
1931 if (err)
a7a79deb
VK		 1932 dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n",
1933 err);
01f2e4ea
SF		 1934
1935 return err;
1936}
1937
99ef5639 1938static int enic_dev_hang_reset(struct enic *enic)
01f2e4ea
SF		 1939{
1940 int err;
1941
99ef5639
VK		 1942 err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset,
1943 vnic_dev_hang_reset_done, 0);
01f2e4ea 1944 if (err)
a7a79deb
VK		 1945 netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n",
1946 err);
01f2e4ea
SF		 1947
1948 return err;
1949}
1950
68f71708
SF		 1951static int enic_set_niccfg(struct enic *enic)
1952{
1953 const u8 rss_default_cpu = 0;
1954 const u8 rss_hash_type = 0;
1955 const u8 rss_hash_bits = 0;
1956 const u8 rss_base_cpu = 0;
1957 const u8 rss_enable = 0;
1958 const u8 tso_ipid_split_en = 0;
1959 const u8 ig_vlan_strip_en = 1;
383ab92f 1960 int err;
68f71708
SF		 1961
1962 /* Enable VLAN tag stripping. RSS not enabled (yet).
6ba9cdc0 1963 */
68f71708 1964
383ab92f
VK		 1965 spin_lock(&enic->devcmd_lock);
1966 err = enic_set_nic_cfg(enic,
68f71708
SF		 1967 rss_default_cpu, rss_hash_type,
1968 rss_hash_bits, rss_base_cpu,
1969 rss_enable, tso_ipid_split_en,
1970 ig_vlan_strip_en);
383ab92f
VK		 1971 spin_unlock(&enic->devcmd_lock);
1972
1973 return err;
1974}
1975
1976static int enic_dev_hang_notify(struct enic *enic)
1977{
1978 int err;
1979
1980 spin_lock(&enic->devcmd_lock);
1981 err = vnic_dev_hang_notify(enic->vdev);
1982 spin_unlock(&enic->devcmd_lock);
1983
1984 return err;
68f71708
SF		 1985}
1986
f8cac14a
VK		 1987int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic)
1988{
1989 int err;
1990
1991 spin_lock(&enic->devcmd_lock);
1992 err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
1993 IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN);
1994 spin_unlock(&enic->devcmd_lock);
1995
1996 return err;
1997}
1998
01f2e4ea
SF		 1999static void enic_reset(struct work_struct *work)
2000{
2001 struct enic *enic = container_of(work, struct enic, reset);
2002
2003 if (!netif_running(enic->netdev))
2004 return;
2005
2006 rtnl_lock();
2007
383ab92f 2008 enic_dev_hang_notify(enic);
01f2e4ea 2009 enic_stop(enic->netdev);
99ef5639
VK		 2010 enic_dev_hang_reset(enic);
2011 enic_reset_multicast_list(enic);
01f2e4ea 2012 enic_init_vnic_resources(enic);
68f71708 2013 enic_set_niccfg(enic);
f8cac14a 2014 enic_dev_set_ig_vlan_rewrite_mode(enic);
01f2e4ea
SF		 2015 enic_open(enic->netdev);
2016
2017 rtnl_unlock();
2018}
2019
2020static int enic_set_intr_mode(struct enic *enic)
2021{
6ba9cdc0
SF		 2022 unsigned int n = 1;
2023 unsigned int m = 1;
01f2e4ea
SF		 2024 unsigned int i;
2025
2026 /* Set interrupt mode (INTx, MSI, MSI-X) depending
2027 * system capabilities.
2028 *
2029 * Try MSI-X first
2030 *
2031 * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs
2032 * (the second to last INTR is used for WQ/RQ errors)
2033 * (the last INTR is used for notifications)
2034 */
2035
2036 BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2);
2037 for (i = 0; i < n + m + 2; i++)
2038 enic->msix_entry[i].entry = i;
2039
2040 if (enic->config.intr_mode < 1 &&
2041 enic->rq_count >= n &&
2042 enic->wq_count >= m &&
2043 enic->cq_count >= n + m &&
2044 enic->intr_count >= n + m + 2 &&
2045 !pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) {
2046
2047 enic->rq_count = n;
2048 enic->wq_count = m;
2049 enic->cq_count = n + m;
2050 enic->intr_count = n + m + 2;
2051
2052 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSIX);
2053
2054 return 0;
2055 }
2056
2057 /* Next try MSI
2058 *
2059 * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR
2060 */
2061
2062 if (enic->config.intr_mode < 2 &&
2063 enic->rq_count >= 1 &&
2064 enic->wq_count >= 1 &&
2065 enic->cq_count >= 2 &&
2066 enic->intr_count >= 1 &&
2067 !pci_enable_msi(enic->pdev)) {
2068
2069 enic->rq_count = 1;
2070 enic->wq_count = 1;
2071 enic->cq_count = 2;
2072 enic->intr_count = 1;
2073
2074 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI);
2075
2076 return 0;
2077 }
2078
2079 /* Next try INTx
2080 *
2081 * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs
2082 * (the first INTR is used for WQ/RQ)
2083 * (the second INTR is used for WQ/RQ errors)
2084 * (the last INTR is used for notifications)
2085 */
2086
2087 if (enic->config.intr_mode < 3 &&
2088 enic->rq_count >= 1 &&
2089 enic->wq_count >= 1 &&
2090 enic->cq_count >= 2 &&
2091 enic->intr_count >= 3) {
2092
2093 enic->rq_count = 1;
2094 enic->wq_count = 1;
2095 enic->cq_count = 2;
2096 enic->intr_count = 3;
2097
2098 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX);
2099
2100 return 0;
2101 }
2102
2103 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
2104
2105 return -EINVAL;
2106}
2107
2108static void enic_clear_intr_mode(struct enic *enic)
2109{
2110 switch (vnic_dev_get_intr_mode(enic->vdev)) {
2111 case VNIC_DEV_INTR_MODE_MSIX:
2112 pci_disable_msix(enic->pdev);
2113 break;
2114 case VNIC_DEV_INTR_MODE_MSI:
2115 pci_disable_msi(enic->pdev);
2116 break;
2117 default:
2118 break;
2119 }
2120
2121 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
2122}
2123
f8bd9091
SF		 2124static const struct net_device_ops enic_netdev_dynamic_ops = {
2125 .ndo_open = enic_open,
2126 .ndo_stop = enic_stop,
2127 .ndo_start_xmit = enic_hard_start_xmit,
2128 .ndo_get_stats = enic_get_stats,
2129 .ndo_validate_addr = eth_validate_addr,
2130 .ndo_set_multicast_list = enic_set_multicast_list,
2131 .ndo_set_mac_address = enic_set_mac_address_dynamic,
2132 .ndo_change_mtu = enic_change_mtu,
2133 .ndo_vlan_rx_register = enic_vlan_rx_register,
2134 .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
2135 .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
2136 .ndo_tx_timeout = enic_tx_timeout,
2137 .ndo_set_vf_port = enic_set_vf_port,
2138 .ndo_get_vf_port = enic_get_vf_port,
2139#ifdef CONFIG_NET_POLL_CONTROLLER
2140 .ndo_poll_controller = enic_poll_controller,
2141#endif
2142};
2143
afe29f7a
SH		 2144static const struct net_device_ops enic_netdev_ops = {
2145 .ndo_open = enic_open,
2146 .ndo_stop = enic_stop,
00829823 2147 .ndo_start_xmit = enic_hard_start_xmit,
afe29f7a
SH		 2148 .ndo_get_stats = enic_get_stats,
2149 .ndo_validate_addr = eth_validate_addr,
f8bd9091 2150 .ndo_set_mac_address = enic_set_mac_address,
383ab92f 2151 .ndo_set_multicast_list = enic_set_multicast_list,
afe29f7a
SH		 2152 .ndo_change_mtu = enic_change_mtu,
2153 .ndo_vlan_rx_register = enic_vlan_rx_register,
2154 .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
2155 .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
2156 .ndo_tx_timeout = enic_tx_timeout,
2157#ifdef CONFIG_NET_POLL_CONTROLLER
2158 .ndo_poll_controller = enic_poll_controller,
2159#endif
2160};
2161
6fdfa970
SF		 2162void enic_dev_deinit(struct enic *enic)
2163{
2164 netif_napi_del(&enic->napi);
2165 enic_free_vnic_resources(enic);
2166 enic_clear_intr_mode(enic);
2167}
2168
383ab92f
VK		 2169static int enic_dev_stats_clear(struct enic *enic)
2170{
2171 int err;
2172
2173 spin_lock(&enic->devcmd_lock);
2174 err = vnic_dev_stats_clear(enic->vdev);
2175 spin_unlock(&enic->devcmd_lock);
2176
2177 return err;
2178}
2179
6fdfa970
SF		 2180int enic_dev_init(struct enic *enic)
2181{
a7a79deb 2182 struct device *dev = enic_get_dev(enic);
6fdfa970
SF		 2183 struct net_device *netdev = enic->netdev;
2184 int err;
2185
2186 /* Get vNIC configuration
2187 */
2188
2189 err = enic_get_vnic_config(enic);
2190 if (err) {
a7a79deb 2191 dev_err(dev, "Get vNIC configuration failed, aborting\n");
6fdfa970
SF		 2192 return err;
2193 }
2194
2195 /* Get available resource counts
2196 */
2197
2198 enic_get_res_counts(enic);
2199
2200 /* Set interrupt mode based on resource counts and system
2201 * capabilities
2202 */
2203
2204 err = enic_set_intr_mode(enic);
2205 if (err) {
a7a79deb
VK		 2206 dev_err(dev, "Failed to set intr mode based on resource "
2207 "counts and system capabilities, aborting\n");
6fdfa970
SF		 2208 return err;
2209 }
2210
2211 /* Allocate and configure vNIC resources
2212 */
2213
2214 err = enic_alloc_vnic_resources(enic);
2215 if (err) {
a7a79deb 2216 dev_err(dev, "Failed to alloc vNIC resources, aborting\n");
6fdfa970
SF		 2217 goto err_out_free_vnic_resources;
2218 }
2219
2220 enic_init_vnic_resources(enic);
2221
383ab92f
VK		 2222 /* Clear LIF stats
2223 */
2224 enic_dev_stats_clear(enic);
2225
6fdfa970
SF		 2226 err = enic_set_rq_alloc_buf(enic);
2227 if (err) {
a7a79deb 2228 dev_err(dev, "Failed to set RQ buffer allocator, aborting\n");
6fdfa970
SF		 2229 goto err_out_free_vnic_resources;
2230 }
2231
2232 err = enic_set_niccfg(enic);
2233 if (err) {
a7a79deb 2234 dev_err(dev, "Failed to config nic, aborting\n");
6fdfa970
SF		 2235 goto err_out_free_vnic_resources;
2236 }
2237
f8cac14a
VK		 2238 err = enic_dev_set_ig_vlan_rewrite_mode(enic);
2239 if (err) {
a7a79deb 2240 netdev_err(netdev,
f8cac14a
VK		 2241 "Failed to set ingress vlan rewrite mode, aborting.\n");
2242 goto err_out_free_vnic_resources;
2243 }
2244
6fdfa970
SF		 2245 switch (vnic_dev_get_intr_mode(enic->vdev)) {
2246 default:
2247 netif_napi_add(netdev, &enic->napi, enic_poll, 64);
2248 break;
2249 case VNIC_DEV_INTR_MODE_MSIX:
2250 netif_napi_add(netdev, &enic->napi, enic_poll_msix, 64);
2251 break;
2252 }
2253
2254 return 0;
2255
2256err_out_free_vnic_resources:
2257 enic_clear_intr_mode(enic);
2258 enic_free_vnic_resources(enic);
2259
2260 return err;
2261}
2262
27e6c7d3
SF		 2263static void enic_iounmap(struct enic *enic)
2264{
2265 unsigned int i;
2266
2267 for (i = 0; i < ARRAY_SIZE(enic->bar); i++)
2268 if (enic->bar[i].vaddr)
2269 iounmap(enic->bar[i].vaddr);
2270}
2271
01f2e4ea
SF		 2272static int __devinit enic_probe(struct pci_dev *pdev,
2273 const struct pci_device_id *ent)
2274{
a7a79deb 2275 struct device *dev = &pdev->dev;
01f2e4ea
SF		 2276 struct net_device *netdev;
2277 struct enic *enic;
2278 int using_dac = 0;
2279 unsigned int i;
2280 int err;
2281
01f2e4ea
SF		 2282 /* Allocate net device structure and initialize. Private
2283 * instance data is initialized to zero.
2284 */
2285
2286 netdev = alloc_etherdev(sizeof(struct enic));
2287 if (!netdev) {
a7a79deb 2288 pr_err("Etherdev alloc failed, aborting\n");
01f2e4ea
SF		 2289 return -ENOMEM;
2290 }
2291
01f2e4ea
SF		 2292 pci_set_drvdata(pdev, netdev);
2293
2294 SET_NETDEV_DEV(netdev, &pdev->dev);
2295
2296 enic = netdev_priv(netdev);
2297 enic->netdev = netdev;
2298 enic->pdev = pdev;
2299
2300 /* Setup PCI resources
2301 */
2302
29046f9b 2303 err = pci_enable_device_mem(pdev);
01f2e4ea 2304 if (err) {
a7a79deb 2305 dev_err(dev, "Cannot enable PCI device, aborting\n");
01f2e4ea
SF		 2306 goto err_out_free_netdev;
2307 }
2308
2309 err = pci_request_regions(pdev, DRV_NAME);
2310 if (err) {
a7a79deb 2311 dev_err(dev, "Cannot request PCI regions, aborting\n");
01f2e4ea
SF		 2312 goto err_out_disable_device;
2313 }
2314
2315 pci_set_master(pdev);
2316
2317 /* Query PCI controller on system for DMA addressing
2318 * limitation for the device. Try 40-bit first, and
2319 * fail to 32-bit.
2320 */
2321
50cf156a 2322 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
01f2e4ea 2323 if (err) {
284901a9 2324 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
01f2e4ea 2325 if (err) {
a7a79deb 2326 dev_err(dev, "No usable DMA configuration, aborting\n");
01f2e4ea
SF		 2327 goto err_out_release_regions;
2328 }
284901a9 2329 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
01f2e4ea 2330 if (err) {
a7a79deb
VK		 2331 dev_err(dev, "Unable to obtain %u-bit DMA "
2332 "for consistent allocations, aborting\n", 32);
01f2e4ea
SF		 2333 goto err_out_release_regions;
2334 }
2335 } else {
50cf156a 2336 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
01f2e4ea 2337 if (err) {
a7a79deb
VK		 2338 dev_err(dev, "Unable to obtain %u-bit DMA "
2339 "for consistent allocations, aborting\n", 40);
01f2e4ea
SF		 2340 goto err_out_release_regions;
2341 }
2342 using_dac = 1;
2343 }
2344
27e6c7d3 2345 /* Map vNIC resources from BAR0-5
01f2e4ea
SF		 2346 */
2347
27e6c7d3
SF		 2348 for (i = 0; i < ARRAY_SIZE(enic->bar); i++) {
2349 if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM))
2350 continue;
2351 enic->bar[i].len = pci_resource_len(pdev, i);
2352 enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len);
2353 if (!enic->bar[i].vaddr) {
a7a79deb 2354 dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i);
27e6c7d3
SF		 2355 err = -ENODEV;
2356 goto err_out_iounmap;
2357 }
2358 enic->bar[i].bus_addr = pci_resource_start(pdev, i);
01f2e4ea
SF		 2359 }
2360
2361 /* Register vNIC device
2362 */
2363
27e6c7d3
SF		 2364 enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar,
2365 ARRAY_SIZE(enic->bar));
01f2e4ea 2366 if (!enic->vdev) {
a7a79deb 2367 dev_err(dev, "vNIC registration failed, aborting\n");
01f2e4ea
SF		 2368 err = -ENODEV;
2369 goto err_out_iounmap;
2370 }
2371
2372 /* Issue device open to get device in known state
2373 */
2374
2375 err = enic_dev_open(enic);
2376 if (err) {
a7a79deb 2377 dev_err(dev, "vNIC dev open failed, aborting\n");
01f2e4ea
SF		 2378 goto err_out_vnic_unregister;
2379 }
2380
2381 /* Issue device init to initialize the vnic-to-switch link.
2382 * We'll start with carrier off and wait for link UP
2383 * notification later to turn on carrier. We don't need
2384 * to wait here for the vnic-to-switch link initialization
2385 * to complete; link UP notification is the indication that
2386 * the process is complete.
2387 */
2388
2389 netif_carrier_off(netdev);
2390
a7a79deb
VK		 2391 /* Do not call dev_init for a dynamic vnic.
2392 * For a dynamic vnic, init_prov_info will be
2393 * called later by an upper layer.
2394 */
2395
f8bd9091
SF		 2396 if (!enic_is_dynamic(enic)) {
2397 err = vnic_dev_init(enic->vdev, 0);
2398 if (err) {
a7a79deb 2399 dev_err(dev, "vNIC dev init failed, aborting\n");
f8bd9091
SF		 2400 goto err_out_dev_close;
2401 }
01f2e4ea
SF		 2402 }
2403
383ab92f
VK		 2404 /* Setup devcmd lock
2405 */
2406
2407 spin_lock_init(&enic->devcmd_lock);
2408
6fdfa970 2409 err = enic_dev_init(enic);
01f2e4ea 2410 if (err) {
a7a79deb 2411 dev_err(dev, "Device initialization failed, aborting\n");
01f2e4ea
SF		 2412 goto err_out_dev_close;
2413 }
2414
383ab92f 2415 /* Setup notification timer, HW reset task, and wq locks
01f2e4ea
SF		 2416 */
2417
2418 init_timer(&enic->notify_timer);
2419 enic->notify_timer.function = enic_notify_timer;
2420 enic->notify_timer.data = (unsigned long)enic;
2421
2422 INIT_WORK(&enic->reset, enic_reset);
2423
2424 for (i = 0; i < enic->wq_count; i++)
2425 spin_lock_init(&enic->wq_lock[i]);
2426
01f2e4ea
SF		 2427 /* Register net device
2428 */
2429
2430 enic->port_mtu = enic->config.mtu;
2431 (void)enic_change_mtu(netdev, enic->port_mtu);
2432
2433 err = enic_set_mac_addr(netdev, enic->mac_addr);
2434 if (err) {
a7a79deb 2435 dev_err(dev, "Invalid MAC address, aborting\n");
6fdfa970 2436 goto err_out_dev_deinit;
01f2e4ea
SF		 2437 }
2438
7c844599
SF		 2439 enic->tx_coalesce_usecs = enic->config.intr_timer_usec;
2440 enic->rx_coalesce_usecs = enic->tx_coalesce_usecs;
2441
f8bd9091
SF		 2442 if (enic_is_dynamic(enic))
2443 netdev->netdev_ops = &enic_netdev_dynamic_ops;
2444 else
2445 netdev->netdev_ops = &enic_netdev_ops;
2446
01f2e4ea
SF		 2447 netdev->watchdog_timeo = 2 * HZ;
2448 netdev->ethtool_ops = &enic_ethtool_ops;
01f2e4ea 2449
73c1ea9b 2450 netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1825aca6
VK		 2451 if (ENIC_SETTING(enic, LOOP)) {
2452 netdev->features &= ~NETIF_F_HW_VLAN_TX;
2453 enic->loop_enable = 1;
2454 enic->loop_tag = enic->config.loop_tag;
2455 dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag);
2456 }
01f2e4ea
SF		 2457 if (ENIC_SETTING(enic, TXCSUM))
2458 netdev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
2459 if (ENIC_SETTING(enic, TSO))
2460 netdev->features |= NETIF_F_TSO |
2461 NETIF_F_TSO6 | NETIF_F_TSO_ECN;
86ca9db7 2462 if (ENIC_SETTING(enic, LRO))
88132f55 2463 netdev->features |= NETIF_F_GRO;
01f2e4ea
SF		 2464 if (using_dac)
2465 netdev->features |= NETIF_F_HIGHDMA;
2466
01f2e4ea
SF		 2467 enic->csum_rx_enabled = ENIC_SETTING(enic, RXCSUM);
2468
01f2e4ea
SF		 2469 err = register_netdev(netdev);
2470 if (err) {
a7a79deb 2471 dev_err(dev, "Cannot register net device, aborting\n");
6fdfa970 2472 goto err_out_dev_deinit;
01f2e4ea
SF		 2473 }
2474
2475 return 0;
2476
6fdfa970
SF		 2477err_out_dev_deinit:
2478 enic_dev_deinit(enic);
01f2e4ea
SF		 2479err_out_dev_close:
2480 vnic_dev_close(enic->vdev);
2481err_out_vnic_unregister:
01f2e4ea
SF		 2482 vnic_dev_unregister(enic->vdev);
2483err_out_iounmap:
2484 enic_iounmap(enic);
2485err_out_release_regions:
2486 pci_release_regions(pdev);
2487err_out_disable_device:
2488 pci_disable_device(pdev);
2489err_out_free_netdev:
2490 pci_set_drvdata(pdev, NULL);
2491 free_netdev(netdev);
2492
2493 return err;
2494}
2495
2496static void __devexit enic_remove(struct pci_dev *pdev)
2497{
2498 struct net_device *netdev = pci_get_drvdata(pdev);
2499
2500 if (netdev) {
2501 struct enic *enic = netdev_priv(netdev);
2502
2503 flush_scheduled_work();
2504 unregister_netdev(netdev);
6fdfa970 2505 enic_dev_deinit(enic);
01f2e4ea 2506 vnic_dev_close(enic->vdev);
01f2e4ea
SF		 2507 vnic_dev_unregister(enic->vdev);
2508 enic_iounmap(enic);
2509 pci_release_regions(pdev);
2510 pci_disable_device(pdev);
2511 pci_set_drvdata(pdev, NULL);
2512 free_netdev(netdev);
2513 }
2514}
2515
2516static struct pci_driver enic_driver = {
2517 .name = DRV_NAME,
2518 .id_table = enic_id_table,
2519 .probe = enic_probe,
2520 .remove = __devexit_p(enic_remove),
2521};
2522
2523static int __init enic_init_module(void)
2524{
a7a79deb 2525 pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
01f2e4ea
SF		 2526
2527 return pci_register_driver(&enic_driver);
2528}
2529
2530static void __exit enic_cleanup_module(void)
2531{
2532 pci_unregister_driver(&enic_driver);
2533}
2534
2535module_init(enic_init_module);
2536module_exit(enic_cleanup_module);
Clone of davem's net-next-2.6 tree