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enic: Make local functions static
[net-next-2.6.git] / drivers / net / enic / enic_main.c
CommitLineData
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 367 .get_flags = ethtool_op_get_flags,
01f2e4ea
SF		 368};
369
370static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
371{
372 struct enic *enic = vnic_dev_priv(wq->vdev);
373
374 if (buf->sop)
375 pci_unmap_single(enic->pdev, buf->dma_addr,
376 buf->len, PCI_DMA_TODEVICE);
377 else
378 pci_unmap_page(enic->pdev, buf->dma_addr,
379 buf->len, PCI_DMA_TODEVICE);
380
381 if (buf->os_buf)
382 dev_kfree_skb_any(buf->os_buf);
383}
384
385static void enic_wq_free_buf(struct vnic_wq *wq,
386 struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque)
387{
388 enic_free_wq_buf(wq, buf);
389}
390
391static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
392 u8 type, u16 q_number, u16 completed_index, void *opaque)
393{
394 struct enic *enic = vnic_dev_priv(vdev);
395
396 spin_lock(&enic->wq_lock[q_number]);
397
398 vnic_wq_service(&enic->wq[q_number], cq_desc,
399 completed_index, enic_wq_free_buf,
400 opaque);
401
402 if (netif_queue_stopped(enic->netdev) &&
ea0d7d91
SF		 403 vnic_wq_desc_avail(&enic->wq[q_number]) >=
404 (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS))
01f2e4ea
SF		 405 netif_wake_queue(enic->netdev);
406
407 spin_unlock(&enic->wq_lock[q_number]);
408
409 return 0;
410}
411
412static void enic_log_q_error(struct enic *enic)
413{
414 unsigned int i;
415 u32 error_status;
416
417 for (i = 0; i < enic->wq_count; i++) {
418 error_status = vnic_wq_error_status(&enic->wq[i]);
419 if (error_status)
a7a79deb
VK		 420 netdev_err(enic->netdev, "WQ[%d] error_status %d\n",
421 i, error_status);
01f2e4ea
SF		 422 }
423
424 for (i = 0; i < enic->rq_count; i++) {
425 error_status = vnic_rq_error_status(&enic->rq[i]);
426 if (error_status)
a7a79deb
VK		 427 netdev_err(enic->netdev, "RQ[%d] error_status %d\n",
428 i, error_status);
01f2e4ea
SF		 429 }
430}
431
383ab92f 432static void enic_msglvl_check(struct enic *enic)
01f2e4ea 433{
383ab92f 434 u32 msg_enable = vnic_dev_msg_lvl(enic->vdev);
01f2e4ea 435
383ab92f 436 if (msg_enable != enic->msg_enable) {
a7a79deb
VK		 437 netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n",
438 enic->msg_enable, msg_enable);
383ab92f 439 enic->msg_enable = msg_enable;
01f2e4ea
SF		 440 }
441}
442
443static void enic_mtu_check(struct enic *enic)
444{
445 u32 mtu = vnic_dev_mtu(enic->vdev);
a7a79deb 446 struct net_device *netdev = enic->netdev;
01f2e4ea 447
491598a4 448 if (mtu && mtu != enic->port_mtu) {
7c844599 449 enic->port_mtu = mtu;
a7a79deb
VK		 450 if (mtu < netdev->mtu)
451 netdev_warn(netdev,
452 "interface MTU (%d) set higher "
01f2e4ea 453 "than switch port MTU (%d)\n",
a7a79deb 454 netdev->mtu, mtu);
01f2e4ea
SF		 455 }
456}
457
383ab92f 458static void enic_link_check(struct enic *enic)
01f2e4ea 459{
383ab92f
VK		 460 int link_status = vnic_dev_link_status(enic->vdev);
461 int carrier_ok = netif_carrier_ok(enic->netdev);
01f2e4ea 462
383ab92f 463 if (link_status && !carrier_ok) {
a7a79deb 464 netdev_info(enic->netdev, "Link UP\n");
383ab92f
VK		 465 netif_carrier_on(enic->netdev);
466 } else if (!link_status && carrier_ok) {
a7a79deb 467 netdev_info(enic->netdev, "Link DOWN\n");
383ab92f 468 netif_carrier_off(enic->netdev);
01f2e4ea
SF		 469 }
470}
471
472static void enic_notify_check(struct enic *enic)
473{
474 enic_msglvl_check(enic);
475 enic_mtu_check(enic);
476 enic_link_check(enic);
477}
478
479#define ENIC_TEST_INTR(pba, i) (pba & (1 << i))
480
481static irqreturn_t enic_isr_legacy(int irq, void *data)
482{
483 struct net_device *netdev = data;
484 struct enic *enic = netdev_priv(netdev);
485 u32 pba;
486
487 vnic_intr_mask(&enic->intr[ENIC_INTX_WQ_RQ]);
488
489 pba = vnic_intr_legacy_pba(enic->legacy_pba);
490 if (!pba) {
491 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
492 return IRQ_NONE; /* not our interrupt */
493 }
494
ed8af6b2
SF		 495 if (ENIC_TEST_INTR(pba, ENIC_INTX_NOTIFY)) {
496 vnic_intr_return_all_credits(&enic->intr[ENIC_INTX_NOTIFY]);
01f2e4ea 497 enic_notify_check(enic);
ed8af6b2 498 }
01f2e4ea
SF		 499
500 if (ENIC_TEST_INTR(pba, ENIC_INTX_ERR)) {
ed8af6b2 501 vnic_intr_return_all_credits(&enic->intr[ENIC_INTX_ERR]);
01f2e4ea
SF		 502 enic_log_q_error(enic);
503 /* schedule recovery from WQ/RQ error */
504 schedule_work(&enic->reset);
505 return IRQ_HANDLED;
506 }
507
508 if (ENIC_TEST_INTR(pba, ENIC_INTX_WQ_RQ)) {
288379f0
BH		 509 if (napi_schedule_prep(&enic->napi))
510 __napi_schedule(&enic->napi);
01f2e4ea
SF		 511 } else {
512 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
513 }
514
515 return IRQ_HANDLED;
516}
517
518static irqreturn_t enic_isr_msi(int irq, void *data)
519{
520 struct enic *enic = data;
521
522 /* With MSI, there is no sharing of interrupts, so this is
523 * our interrupt and there is no need to ack it. The device
524 * is not providing per-vector masking, so the OS will not
525 * write to PCI config space to mask/unmask the interrupt.
526 * We're using mask_on_assertion for MSI, so the device
527 * automatically masks the interrupt when the interrupt is
528 * generated. Later, when exiting polling, the interrupt
529 * will be unmasked (see enic_poll).
530 *
531 * Also, the device uses the same PCIe Traffic Class (TC)
532 * for Memory Write data and MSI, so there are no ordering
533 * issues; the MSI will always arrive at the Root Complex
534 * _after_ corresponding Memory Writes (i.e. descriptor
535 * writes).
536 */
537
288379f0 538 napi_schedule(&enic->napi);
01f2e4ea
SF		 539
540 return IRQ_HANDLED;
541}
542
543static irqreturn_t enic_isr_msix_rq(int irq, void *data)
544{
545 struct enic *enic = data;
546
547 /* schedule NAPI polling for RQ cleanup */
288379f0 548 napi_schedule(&enic->napi);
01f2e4ea
SF		 549
550 return IRQ_HANDLED;
551}
552
553static irqreturn_t enic_isr_msix_wq(int irq, void *data)
554{
555 struct enic *enic = data;
556 unsigned int wq_work_to_do = -1; /* no limit */
557 unsigned int wq_work_done;
558
559 wq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
560 wq_work_to_do, enic_wq_service, NULL);
561
562 vnic_intr_return_credits(&enic->intr[ENIC_MSIX_WQ],
563 wq_work_done,
564 1 /* unmask intr */,
565 1 /* reset intr timer */);
566
567 return IRQ_HANDLED;
568}
569
570static irqreturn_t enic_isr_msix_err(int irq, void *data)
571{
572 struct enic *enic = data;
573
ed8af6b2
SF		 574 vnic_intr_return_all_credits(&enic->intr[ENIC_MSIX_ERR]);
575
01f2e4ea
SF		 576 enic_log_q_error(enic);
577
578 /* schedule recovery from WQ/RQ error */
579 schedule_work(&enic->reset);
580
581 return IRQ_HANDLED;
582}
583
584static irqreturn_t enic_isr_msix_notify(int irq, void *data)
585{
586 struct enic *enic = data;
587
ed8af6b2 588 vnic_intr_return_all_credits(&enic->intr[ENIC_MSIX_NOTIFY]);
01f2e4ea 589 enic_notify_check(enic);
01f2e4ea
SF		 590
591 return IRQ_HANDLED;
592}
593
594static inline void enic_queue_wq_skb_cont(struct enic *enic,
595 struct vnic_wq *wq, struct sk_buff *skb,
1825aca6 596 unsigned int len_left, int loopback)
01f2e4ea
SF		 597{
598 skb_frag_t *frag;
599
600 /* Queue additional data fragments */
601 for (frag = skb_shinfo(skb)->frags; len_left; frag++) {
602 len_left -= frag->size;
603 enic_queue_wq_desc_cont(wq, skb,
604 pci_map_page(enic->pdev, frag->page,
605 frag->page_offset, frag->size,
606 PCI_DMA_TODEVICE),
607 frag->size,
1825aca6
VK		 608 (len_left == 0), /* EOP? */
609 loopback);
01f2e4ea
SF		 610 }
611}
612
613static inline void enic_queue_wq_skb_vlan(struct enic *enic,
614 struct vnic_wq *wq, struct sk_buff *skb,
1825aca6 615 int vlan_tag_insert, unsigned int vlan_tag, int loopback)
01f2e4ea
SF		 616{
617 unsigned int head_len = skb_headlen(skb);
618 unsigned int len_left = skb->len - head_len;
619 int eop = (len_left == 0);
620
ea0d7d91
SF		 621 /* Queue the main skb fragment. The fragments are no larger
622 * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less
623 * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor
624 * per fragment is queued.
625 */
01f2e4ea
SF		 626 enic_queue_wq_desc(wq, skb,
627 pci_map_single(enic->pdev, skb->data,
628 head_len, PCI_DMA_TODEVICE),
629 head_len,
630 vlan_tag_insert, vlan_tag,
1825aca6 631 eop, loopback);
01f2e4ea
SF		 632
633 if (!eop)
1825aca6 634 enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback);
01f2e4ea
SF		 635}
636
637static inline void enic_queue_wq_skb_csum_l4(struct enic *enic,
638 struct vnic_wq *wq, struct sk_buff *skb,
1825aca6 639 int vlan_tag_insert, unsigned int vlan_tag, int loopback)
01f2e4ea
SF		 640{
641 unsigned int head_len = skb_headlen(skb);
642 unsigned int len_left = skb->len - head_len;
643 unsigned int hdr_len = skb_transport_offset(skb);
644 unsigned int csum_offset = hdr_len + skb->csum_offset;
645 int eop = (len_left == 0);
646
ea0d7d91
SF		 647 /* Queue the main skb fragment. The fragments are no larger
648 * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less
649 * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor
650 * per fragment is queued.
651 */
01f2e4ea
SF		 652 enic_queue_wq_desc_csum_l4(wq, skb,
653 pci_map_single(enic->pdev, skb->data,
654 head_len, PCI_DMA_TODEVICE),
655 head_len,
656 csum_offset,
657 hdr_len,
658 vlan_tag_insert, vlan_tag,
1825aca6 659 eop, loopback);
01f2e4ea
SF		 660
661 if (!eop)
1825aca6 662 enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback);
01f2e4ea
SF		 663}
664
665static inline void enic_queue_wq_skb_tso(struct enic *enic,
666 struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss,
1825aca6 667 int vlan_tag_insert, unsigned int vlan_tag, int loopback)
01f2e4ea 668{
ea0d7d91
SF		 669 unsigned int frag_len_left = skb_headlen(skb);
670 unsigned int len_left = skb->len - frag_len_left;
01f2e4ea
SF		 671 unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
672 int eop = (len_left == 0);
ea0d7d91
SF		 673 unsigned int len;
674 dma_addr_t dma_addr;
675 unsigned int offset = 0;
676 skb_frag_t *frag;
01f2e4ea
SF		 677
678 /* Preload TCP csum field with IP pseudo hdr calculated
679 * with IP length set to zero. HW will later add in length
680 * to each TCP segment resulting from the TSO.
681 */
682
09640e63 683 if (skb->protocol == cpu_to_be16(ETH_P_IP)) {
01f2e4ea
SF		 684 ip_hdr(skb)->check = 0;
685 tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr,
686 ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
09640e63 687 } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) {
01f2e4ea
SF		 688 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
689 &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
690 }
691
ea0d7d91
SF		 692 /* Queue WQ_ENET_MAX_DESC_LEN length descriptors
693 * for the main skb fragment
694 */
695 while (frag_len_left) {
696 len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN);
697 dma_addr = pci_map_single(enic->pdev, skb->data + offset,
698 len, PCI_DMA_TODEVICE);
699 enic_queue_wq_desc_tso(wq, skb,
700 dma_addr,
701 len,
702 mss, hdr_len,
703 vlan_tag_insert, vlan_tag,
1825aca6 704 eop && (len == frag_len_left), loopback);
ea0d7d91
SF		 705 frag_len_left -= len;
706 offset += len;
707 }
01f2e4ea 708
ea0d7d91
SF		 709 if (eop)
710 return;
711
712 /* Queue WQ_ENET_MAX_DESC_LEN length descriptors
713 * for additional data fragments
714 */
715 for (frag = skb_shinfo(skb)->frags; len_left; frag++) {
716 len_left -= frag->size;
717 frag_len_left = frag->size;
718 offset = frag->page_offset;
719
720 while (frag_len_left) {
721 len = min(frag_len_left,
722 (unsigned int)WQ_ENET_MAX_DESC_LEN);
723 dma_addr = pci_map_page(enic->pdev, frag->page,
724 offset, len,
725 PCI_DMA_TODEVICE);
726 enic_queue_wq_desc_cont(wq, skb,
727 dma_addr,
728 len,
729 (len_left == 0) &&
1825aca6
VK		 730 (len == frag_len_left), /* EOP? */
731 loopback);
ea0d7d91
SF		 732 frag_len_left -= len;
733 offset += len;
734 }
735 }
01f2e4ea
SF		 736}
737
738static inline void enic_queue_wq_skb(struct enic *enic,
739 struct vnic_wq *wq, struct sk_buff *skb)
740{
741 unsigned int mss = skb_shinfo(skb)->gso_size;
742 unsigned int vlan_tag = 0;
743 int vlan_tag_insert = 0;
1825aca6 744 int loopback = 0;
01f2e4ea
SF		 745
746 if (enic->vlan_group && vlan_tx_tag_present(skb)) {
747 /* VLAN tag from trunking driver */
748 vlan_tag_insert = 1;
749 vlan_tag = vlan_tx_tag_get(skb);
1825aca6
VK		 750 } else if (enic->loop_enable) {
751 vlan_tag = enic->loop_tag;
752 loopback = 1;
01f2e4ea
SF		 753 }
754
755 if (mss)
756 enic_queue_wq_skb_tso(enic, wq, skb, mss,
1825aca6 757 vlan_tag_insert, vlan_tag, loopback);
01f2e4ea
SF		 758 else if (skb->ip_summed == CHECKSUM_PARTIAL)
759 enic_queue_wq_skb_csum_l4(enic, wq, skb,
1825aca6 760 vlan_tag_insert, vlan_tag, loopback);
01f2e4ea
SF		 761 else
762 enic_queue_wq_skb_vlan(enic, wq, skb,
1825aca6 763 vlan_tag_insert, vlan_tag, loopback);
01f2e4ea
SF		 764}
765
ed8af6b2 766/* netif_tx_lock held, process context with BHs disabled, or BH */
61357325 767static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
d87fd25d 768 struct net_device *netdev)
01f2e4ea
SF		 769{
770 struct enic *enic = netdev_priv(netdev);
771 struct vnic_wq *wq = &enic->wq[0];
772 unsigned long flags;
773
774 if (skb->len <= 0) {
775 dev_kfree_skb(skb);
776 return NETDEV_TX_OK;
777 }
778
779 /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs,
780 * which is very likely. In the off chance it's going to take
781 * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb.
782 */
783
784 if (skb_shinfo(skb)->gso_size == 0 &&
785 skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC &&
786 skb_linearize(skb)) {
787 dev_kfree_skb(skb);
788 return NETDEV_TX_OK;
789 }
790
791 spin_lock_irqsave(&enic->wq_lock[0], flags);
792
ea0d7d91
SF		 793 if (vnic_wq_desc_avail(wq) <
794 skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) {
01f2e4ea
SF		 795 netif_stop_queue(netdev);
796 /* This is a hard error, log it */
a7a79deb 797 netdev_err(netdev, "BUG! Tx ring full when queue awake!\n");
01f2e4ea
SF		 798 spin_unlock_irqrestore(&enic->wq_lock[0], flags);
799 return NETDEV_TX_BUSY;
800 }
801
802 enic_queue_wq_skb(enic, wq, skb);
803
ea0d7d91 804 if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)
01f2e4ea
SF		 805 netif_stop_queue(netdev);
806
01f2e4ea
SF		 807 spin_unlock_irqrestore(&enic->wq_lock[0], flags);
808
809 return NETDEV_TX_OK;
810}
811
812/* dev_base_lock rwlock held, nominally process context */
813static struct net_device_stats *enic_get_stats(struct net_device *netdev)
814{
815 struct enic *enic = netdev_priv(netdev);
25f0a061 816 struct net_device_stats *net_stats = &netdev->stats;
01f2e4ea
SF		 817 struct vnic_stats *stats;
818
383ab92f 819 enic_dev_stats_dump(enic, &stats);
01f2e4ea 820
25f0a061
SF		 821 net_stats->tx_packets = stats->tx.tx_frames_ok;
822 net_stats->tx_bytes = stats->tx.tx_bytes_ok;
823 net_stats->tx_errors = stats->tx.tx_errors;
824 net_stats->tx_dropped = stats->tx.tx_drops;
01f2e4ea 825
25f0a061
SF		 826 net_stats->rx_packets = stats->rx.rx_frames_ok;
827 net_stats->rx_bytes = stats->rx.rx_bytes_ok;
828 net_stats->rx_errors = stats->rx.rx_errors;
829 net_stats->multicast = stats->rx.rx_multicast_frames_ok;
350991e1 830 net_stats->rx_over_errors = enic->rq_truncated_pkts;
bd9fb1a4 831 net_stats->rx_crc_errors = enic->rq_bad_fcs;
350991e1 832 net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop;
01f2e4ea 833
25f0a061 834 return net_stats;
01f2e4ea
SF		 835}
836
99ef5639 837static void enic_reset_multicast_list(struct enic *enic)
01f2e4ea
SF		 838{
839 enic->mc_count = 0;
99ef5639 840 enic->flags = 0;
01f2e4ea
SF		 841}
842
843static int enic_set_mac_addr(struct net_device *netdev, char *addr)
844{
f8bd9091
SF		 845 struct enic *enic = netdev_priv(netdev);
846
847 if (enic_is_dynamic(enic)) {
848 if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr))
849 return -EADDRNOTAVAIL;
850 } else {
851 if (!is_valid_ether_addr(addr))
852 return -EADDRNOTAVAIL;
853 }
01f2e4ea
SF		 854
855 memcpy(netdev->dev_addr, addr, netdev->addr_len);
856
857 return 0;
858}
859
f8bd9091
SF		 860static int enic_dev_add_station_addr(struct enic *enic)
861{
862 int err = 0;
863
864 if (is_valid_ether_addr(enic->netdev->dev_addr)) {
865 spin_lock(&enic->devcmd_lock);
866 err = vnic_dev_add_addr(enic->vdev, enic->netdev->dev_addr);
867 spin_unlock(&enic->devcmd_lock);
868 }
869
870 return err;
871}
872
873static int enic_dev_del_station_addr(struct enic *enic)
874{
875 int err = 0;
876
877 if (is_valid_ether_addr(enic->netdev->dev_addr)) {
878 spin_lock(&enic->devcmd_lock);
879 err = vnic_dev_del_addr(enic->vdev, enic->netdev->dev_addr);
880 spin_unlock(&enic->devcmd_lock);
881 }
882
883 return err;
884}
885
886static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p)
887{
888 struct enic *enic = netdev_priv(netdev);
889 struct sockaddr *saddr = p;
890 char *addr = saddr->sa_data;
891 int err;
892
893 if (netif_running(enic->netdev)) {
894 err = enic_dev_del_station_addr(enic);
895 if (err)
896 return err;
897 }
898
899 err = enic_set_mac_addr(netdev, addr);
900 if (err)
901 return err;
902
903 if (netif_running(enic->netdev)) {
904 err = enic_dev_add_station_addr(enic);
905 if (err)
906 return err;
907 }
908
909 return err;
910}
911
912static int enic_set_mac_address(struct net_device *netdev, void *p)
913{
294dab25
RP		 914 struct sockaddr *saddr = p;
915
916 return enic_set_mac_addr(netdev, (char *)saddr->sa_data);
f8bd9091
SF		 917}
918
383ab92f
VK		 919static int enic_dev_packet_filter(struct enic *enic, int directed,
920 int multicast, int broadcast, int promisc, int allmulti)
921{
922 int err;
923
924 spin_lock(&enic->devcmd_lock);
925 err = vnic_dev_packet_filter(enic->vdev, directed,
926 multicast, broadcast, promisc, allmulti);
927 spin_unlock(&enic->devcmd_lock);
928
929 return err;
930}
931
932static int enic_dev_add_multicast_addr(struct enic *enic, u8 *addr)
933{
934 int err;
935
936 spin_lock(&enic->devcmd_lock);
937 err = vnic_dev_add_addr(enic->vdev, addr);
938 spin_unlock(&enic->devcmd_lock);
939
940 return err;
941}
942
943static int enic_dev_del_multicast_addr(struct enic *enic, u8 *addr)
944{
945 int err;
946
947 spin_lock(&enic->devcmd_lock);
948 err = vnic_dev_del_addr(enic->vdev, addr);
949 spin_unlock(&enic->devcmd_lock);
950
951 return err;
952}
953
01f2e4ea
SF		 954/* netif_tx_lock held, BHs disabled */
955static void enic_set_multicast_list(struct net_device *netdev)
956{
957 struct enic *enic = netdev_priv(netdev);
22bedad3 958 struct netdev_hw_addr *ha;
01f2e4ea
SF		 959 int directed = 1;
960 int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0;
961 int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0;
962 int promisc = (netdev->flags & IFF_PROMISC) ? 1 : 0;
4cd24eaf 963 unsigned int mc_count = netdev_mc_count(netdev);
01f2e4ea 964 int allmulti = (netdev->flags & IFF_ALLMULTI) ||
641cb85e 965 mc_count > ENIC_MULTICAST_PERFECT_FILTERS;
9959a185 966 unsigned int flags = netdev->flags | (allmulti ? IFF_ALLMULTI : 0);
01f2e4ea 967 u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN];
01f2e4ea
SF		 968 unsigned int i, j;
969
970 if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS)
971 mc_count = ENIC_MULTICAST_PERFECT_FILTERS;
972
9959a185
SF		 973 if (enic->flags != flags) {
974 enic->flags = flags;
383ab92f 975 enic_dev_packet_filter(enic, directed,
9959a185
SF		 976 multicast, broadcast, promisc, allmulti);
977 }
01f2e4ea
SF		 978
979 /* Is there an easier way? Trying to minimize to
980 * calls to add/del multicast addrs. We keep the
981 * addrs from the last call in enic->mc_addr and
982 * look for changes to add/del.
983 */
984
48e2f183 985 i = 0;
22bedad3 986 netdev_for_each_mc_addr(ha, netdev) {
48e2f183
JP		 987 if (i == mc_count)
988 break;
22bedad3 989 memcpy(mc_addr[i++], ha->addr, ETH_ALEN);
01f2e4ea
SF		 990 }
991
992 for (i = 0; i < enic->mc_count; i++) {
993 for (j = 0; j < mc_count; j++)
994 if (compare_ether_addr(enic->mc_addr[i],
995 mc_addr[j]) == 0)
996 break;
997 if (j == mc_count)
383ab92f 998 enic_dev_del_multicast_addr(enic, enic->mc_addr[i]);
01f2e4ea
SF		 999 }
1000
1001 for (i = 0; i < mc_count; i++) {
1002 for (j = 0; j < enic->mc_count; j++)
1003 if (compare_ether_addr(mc_addr[i],
1004 enic->mc_addr[j]) == 0)
1005 break;
1006 if (j == enic->mc_count)
383ab92f 1007 enic_dev_add_multicast_addr(enic, mc_addr[i]);
01f2e4ea
SF		 1008 }
1009
1010 /* Save the list to compare against next time
1011 */
1012
1013 for (i = 0; i < mc_count; i++)
1014 memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN);
1015
1016 enic->mc_count = mc_count;
01f2e4ea
SF		 1017}
1018
1019/* rtnl lock is held */
1020static void enic_vlan_rx_register(struct net_device *netdev,
1021 struct vlan_group *vlan_group)
1022{
1023 struct enic *enic = netdev_priv(netdev);
1024 enic->vlan_group = vlan_group;
1025}
1026
1027/* rtnl lock is held */
1028static void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1029{
1030 struct enic *enic = netdev_priv(netdev);
1031
1032 spin_lock(&enic->devcmd_lock);
1033 enic_add_vlan(enic, vid);
1034 spin_unlock(&enic->devcmd_lock);
1035}
1036
1037/* rtnl lock is held */
1038static void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1039{
1040 struct enic *enic = netdev_priv(netdev);
1041
1042 spin_lock(&enic->devcmd_lock);
1043 enic_del_vlan(enic, vid);
1044 spin_unlock(&enic->devcmd_lock);
1045}
1046
1047/* netif_tx_lock held, BHs disabled */
1048static void enic_tx_timeout(struct net_device *netdev)
1049{
1050 struct enic *enic = netdev_priv(netdev);
1051 schedule_work(&enic->reset);
1052}
1053
f8bd9091
SF		 1054static int enic_vnic_dev_deinit(struct enic *enic)
1055{
1056 int err;
1057
1058 spin_lock(&enic->devcmd_lock);
1059 err = vnic_dev_deinit(enic->vdev);
1060 spin_unlock(&enic->devcmd_lock);
1061
1062 return err;
1063}
1064
1065static int enic_dev_init_prov(struct enic *enic, struct vic_provinfo *vp)
1066{
1067 int err;
1068
1069 spin_lock(&enic->devcmd_lock);
1070 err = vnic_dev_init_prov(enic->vdev,
1071 (u8 *)vp, vic_provinfo_size(vp));
1072 spin_unlock(&enic->devcmd_lock);
1073
1074 return err;
1075}
1076
1077static int enic_dev_init_done(struct enic *enic, int *done, int *error)
1078{
1079 int err;
1080
1081 spin_lock(&enic->devcmd_lock);
1082 err = vnic_dev_init_done(enic->vdev, done, error);
1083 spin_unlock(&enic->devcmd_lock);
1084
1085 return err;
1086}
1087
08f382eb 1088static int enic_set_port_profile(struct enic *enic, u8 *mac)
f8bd9091
SF		 1089{
1090 struct vic_provinfo *vp;
1091 u8 oui[3] = VIC_PROVINFO_CISCO_OUI;
f8bd9091 1092 char uuid_str[38];
f8bd9091
SF		 1093 int err;
1094
08f382eb
SF		 1095 err = enic_vnic_dev_deinit(enic);
1096 if (err)
1097 return err;
f8bd9091 1098
08f382eb 1099 switch (enic->pp.request) {
f8bd9091 1100
08f382eb 1101 case PORT_REQUEST_ASSOCIATE:
f8bd9091 1102
08f382eb
SF		 1103 if (!(enic->pp.set & ENIC_SET_NAME) || !strlen(enic->pp.name))
1104 return -EINVAL;
f8bd9091 1105
08f382eb
SF		 1106 if (!is_valid_ether_addr(mac))
1107 return -EADDRNOTAVAIL;
f8bd9091 1108
08f382eb
SF		 1109 vp = vic_provinfo_alloc(GFP_KERNEL, oui,
1110 VIC_PROVINFO_LINUX_TYPE);
1111 if (!vp)
1112 return -ENOMEM;
f8bd9091 1113
f8bd9091 1114 vic_provinfo_add_tlv(vp,
08f382eb
SF		 1115 VIC_LINUX_PROV_TLV_PORT_PROFILE_NAME_STR,
1116 strlen(enic->pp.name) + 1, enic->pp.name);
f8bd9091 1117
08f382eb
SF		 1118 vic_provinfo_add_tlv(vp,
1119 VIC_LINUX_PROV_TLV_CLIENT_MAC_ADDR,
1120 ETH_ALEN, mac);
1121
1122 if (enic->pp.set & ENIC_SET_INSTANCE) {
c33788b4 1123 sprintf(uuid_str, "%pUB", enic->pp.instance_uuid);
08f382eb
SF		 1124 vic_provinfo_add_tlv(vp,
1125 VIC_LINUX_PROV_TLV_CLIENT_UUID_STR,
1126 sizeof(uuid_str), uuid_str);
1127 }
f8bd9091 1128
08f382eb 1129 if (enic->pp.set & ENIC_SET_HOST) {
c33788b4 1130 sprintf(uuid_str, "%pUB", enic->pp.host_uuid);
08f382eb
SF		 1131 vic_provinfo_add_tlv(vp,
1132 VIC_LINUX_PROV_TLV_HOST_UUID_STR,
1133 sizeof(uuid_str), uuid_str);
1134 }
f8bd9091 1135
08f382eb
SF		 1136 err = enic_dev_init_prov(enic, vp);
1137 vic_provinfo_free(vp);
1138 if (err)
1139 return err;
1140 break;
f8bd9091 1141
08f382eb
SF		 1142 case PORT_REQUEST_DISASSOCIATE:
1143 break;
f8bd9091 1144
08f382eb
SF		 1145 default:
1146 return -EINVAL;
1147 }
f8bd9091 1148
08f382eb
SF		 1149 enic->pp.set |= ENIC_SET_APPLIED;
1150 return 0;
f8bd9091
SF		 1151}
1152
1153static int enic_set_vf_port(struct net_device *netdev, int vf,
1154 struct nlattr *port[])
1155{
1156 struct enic *enic = netdev_priv(netdev);
08f382eb
SF		 1157
1158 memset(&enic->pp, 0, sizeof(enic->pp));
1159
1160 if (port[IFLA_PORT_REQUEST]) {
1161 enic->pp.set |= ENIC_SET_REQUEST;
1162 enic->pp.request = nla_get_u8(port[IFLA_PORT_REQUEST]);
1163 }
1164
1165 if (port[IFLA_PORT_PROFILE]) {
1166 enic->pp.set |= ENIC_SET_NAME;
1167 memcpy(enic->pp.name, nla_data(port[IFLA_PORT_PROFILE]),
1168 PORT_PROFILE_MAX);
1169 }
1170
1171 if (port[IFLA_PORT_INSTANCE_UUID]) {
1172 enic->pp.set |= ENIC_SET_INSTANCE;
1173 memcpy(enic->pp.instance_uuid,
1174 nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX);
1175 }
1176
1177 if (port[IFLA_PORT_HOST_UUID]) {
1178 enic->pp.set |= ENIC_SET_HOST;
1179 memcpy(enic->pp.host_uuid,
1180 nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX);
1181 }
f8bd9091
SF		 1182
1183 /* don't support VFs, yet */
1184 if (vf != PORT_SELF_VF)
1185 return -EOPNOTSUPP;
1186
08f382eb
SF		 1187 if (!(enic->pp.set & ENIC_SET_REQUEST))
1188 return -EOPNOTSUPP;
f8bd9091 1189
08f382eb 1190 if (enic->pp.request == PORT_REQUEST_ASSOCIATE) {
f8bd9091 1191
418c437d
SF		 1192 /* If the interface mac addr hasn't been assigned,
1193 * assign a random mac addr before setting port-
1194 * profile.
1195 */
1196
1197 if (is_zero_ether_addr(netdev->dev_addr))
1198 random_ether_addr(netdev->dev_addr);
f8bd9091
SF		 1199 }
1200
08f382eb 1201 return enic_set_port_profile(enic, netdev->dev_addr);
f8bd9091
SF		 1202}
1203
1204static int enic_get_vf_port(struct net_device *netdev, int vf,
1205 struct sk_buff *skb)
1206{
1207 struct enic *enic = netdev_priv(netdev);
1208 int err, error, done;
1209 u16 response = PORT_PROFILE_RESPONSE_SUCCESS;
1210
08f382eb
SF		 1211 if (!(enic->pp.set & ENIC_SET_APPLIED))
1212 return -ENODATA;
f8bd9091
SF		 1213
1214 err = enic_dev_init_done(enic, &done, &error);
f8bd9091 1215 if (err)
08f382eb 1216 error = err;
f8bd9091
SF		 1217
1218 switch (error) {
1219 case ERR_SUCCESS:
1220 if (!done)
1221 response = PORT_PROFILE_RESPONSE_INPROGRESS;
1222 break;
1223 case ERR_EINVAL:
1224 response = PORT_PROFILE_RESPONSE_INVALID;
1225 break;
1226 case ERR_EBADSTATE:
1227 response = PORT_PROFILE_RESPONSE_BADSTATE;
1228 break;
1229 case ERR_ENOMEM:
1230 response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES;
1231 break;
1232 default:
1233 response = PORT_PROFILE_RESPONSE_ERROR;
1234 break;
1235 }
1236
1237 NLA_PUT_U16(skb, IFLA_PORT_REQUEST, enic->pp.request);
1238 NLA_PUT_U16(skb, IFLA_PORT_RESPONSE, response);
08f382eb
SF		 1239 if (enic->pp.set & ENIC_SET_NAME)
1240 NLA_PUT(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX,
1241 enic->pp.name);
1242 if (enic->pp.set & ENIC_SET_INSTANCE)
1243 NLA_PUT(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX,
1244 enic->pp.instance_uuid);
1245 if (enic->pp.set & ENIC_SET_HOST)
1246 NLA_PUT(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX,
1247 enic->pp.host_uuid);
f8bd9091
SF		 1248
1249 return 0;
1250
1251nla_put_failure:
1252 return -EMSGSIZE;
1253}
1254
01f2e4ea
SF		 1255static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
1256{
1257 struct enic *enic = vnic_dev_priv(rq->vdev);
1258
1259 if (!buf->os_buf)
1260 return;
1261
1262 pci_unmap_single(enic->pdev, buf->dma_addr,
1263 buf->len, PCI_DMA_FROMDEVICE);
1264 dev_kfree_skb_any(buf->os_buf);
1265}
1266
01f2e4ea
SF		 1267static int enic_rq_alloc_buf(struct vnic_rq *rq)
1268{
1269 struct enic *enic = vnic_dev_priv(rq->vdev);
d19e22dc 1270 struct net_device *netdev = enic->netdev;
01f2e4ea 1271 struct sk_buff *skb;
1825aca6 1272 unsigned int len = netdev->mtu + VLAN_ETH_HLEN;
01f2e4ea
SF		 1273 unsigned int os_buf_index = 0;
1274 dma_addr_t dma_addr;
1275
89d71a66 1276 skb = netdev_alloc_skb_ip_align(netdev, len);
01f2e4ea
SF		 1277 if (!skb)
1278 return -ENOMEM;
1279
1280 dma_addr = pci_map_single(enic->pdev, skb->data,
1281 len, PCI_DMA_FROMDEVICE);
1282
1283 enic_queue_rq_desc(rq, skb, os_buf_index,
1284 dma_addr, len);
1285
1286 return 0;
1287}
1288
4badc385
SF		 1289static int enic_rq_alloc_buf_a1(struct vnic_rq *rq)
1290{
1291 struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
1292
1293 if (vnic_rq_posting_soon(rq)) {
1294
1295 /* SW workaround for A0 HW erratum: if we're just about
1296 * to write posted_index, insert a dummy desc
1297 * of type resvd
1298 */
1299
1300 rq_enet_desc_enc(desc, 0, RQ_ENET_TYPE_RESV2, 0);
1301 vnic_rq_post(rq, 0, 0, 0, 0);
1302 } else {
1303 return enic_rq_alloc_buf(rq);
1304 }
1305
1306 return 0;
1307}
1308
383ab92f
VK		 1309static int enic_dev_hw_version(struct enic *enic,
1310 enum vnic_dev_hw_version *hw_ver)
1311{
1312 int err;
1313
1314 spin_lock(&enic->devcmd_lock);
1315 err = vnic_dev_hw_version(enic->vdev, hw_ver);
1316 spin_unlock(&enic->devcmd_lock);
1317
1318 return err;
1319}
1320
4badc385
SF		 1321static int enic_set_rq_alloc_buf(struct enic *enic)
1322{
1323 enum vnic_dev_hw_version hw_ver;
1324 int err;
1325
383ab92f 1326 err = enic_dev_hw_version(enic, &hw_ver);
4badc385
SF		 1327 if (err)
1328 return err;
1329
1330 switch (hw_ver) {
1331 case VNIC_DEV_HW_VER_A1:
1332 enic->rq_alloc_buf = enic_rq_alloc_buf_a1;
1333 break;
1334 case VNIC_DEV_HW_VER_A2:
1335 case VNIC_DEV_HW_VER_UNKNOWN:
1336 enic->rq_alloc_buf = enic_rq_alloc_buf;
1337 break;
1338 default:
1339 return -ENODEV;
1340 }
1341
1342 return 0;
1343}
1344
01f2e4ea
SF		 1345static void enic_rq_indicate_buf(struct vnic_rq *rq,
1346 struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
1347 int skipped, void *opaque)
1348{
1349 struct enic *enic = vnic_dev_priv(rq->vdev);
86ca9db7 1350 struct net_device *netdev = enic->netdev;
01f2e4ea
SF		 1351 struct sk_buff *skb;
1352
1353 u8 type, color, eop, sop, ingress_port, vlan_stripped;
1354 u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof;
1355 u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
1356 u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc;
1357 u8 packet_error;
f8cac14a 1358 u16 q_number, completed_index, bytes_written, vlan_tci, checksum;
01f2e4ea
SF		 1359 u32 rss_hash;
1360
1361 if (skipped)
1362 return;
1363
1364 skb = buf->os_buf;
1365 prefetch(skb->data - NET_IP_ALIGN);
1366 pci_unmap_single(enic->pdev, buf->dma_addr,
1367 buf->len, PCI_DMA_FROMDEVICE);
1368
1369 cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
1370 &type, &color, &q_number, &completed_index,
1371 &ingress_port, &fcoe, &eop, &sop, &rss_type,
1372 &csum_not_calc, &rss_hash, &bytes_written,
f8cac14a 1373 &packet_error, &vlan_stripped, &vlan_tci, &checksum,
01f2e4ea
SF		 1374 &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error,
1375 &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp,
1376 &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment,
1377 &fcs_ok);
1378
1379 if (packet_error) {
1380
350991e1
SF		 1381 if (!fcs_ok) {
1382 if (bytes_written > 0)
1383 enic->rq_bad_fcs++;
1384 else if (bytes_written == 0)
1385 enic->rq_truncated_pkts++;
1386 }
01f2e4ea
SF		 1387
1388 dev_kfree_skb_any(skb);
1389
1390 return;
1391 }
1392
1393 if (eop && bytes_written > 0) {
1394
1395 /* Good receive
1396 */
1397
1398 skb_put(skb, bytes_written);
86ca9db7 1399 skb->protocol = eth_type_trans(skb, netdev);
01f2e4ea
SF		 1400
1401 if (enic->csum_rx_enabled && !csum_not_calc) {
1402 skb->csum = htons(checksum);
1403 skb->ip_summed = CHECKSUM_COMPLETE;
1404 }
1405
86ca9db7 1406 skb->dev = netdev;
01f2e4ea 1407
f8cac14a
VK		 1408 if (enic->vlan_group && vlan_stripped &&
1409 (vlan_tci & CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK)) {
01f2e4ea 1410
88132f55
VK		 1411 if (netdev->features & NETIF_F_GRO)
1412 vlan_gro_receive(&enic->napi, enic->vlan_group,
f8cac14a 1413 vlan_tci, skb);
01f2e4ea
SF		 1414 else
1415 vlan_hwaccel_receive_skb(skb,
f8cac14a 1416 enic->vlan_group, vlan_tci);
01f2e4ea
SF		 1417
1418 } else {
1419
88132f55
VK		 1420 if (netdev->features & NETIF_F_GRO)
1421 napi_gro_receive(&enic->napi, skb);
01f2e4ea
SF		 1422 else
1423 netif_receive_skb(skb);
1424
1425 }
1426
1427 } else {
1428
1429 /* Buffer overflow
1430 */
1431
1432 dev_kfree_skb_any(skb);
1433 }
1434}
1435
1436static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
1437 u8 type, u16 q_number, u16 completed_index, void *opaque)
1438{
1439 struct enic *enic = vnic_dev_priv(vdev);
1440
1441 vnic_rq_service(&enic->rq[q_number], cq_desc,
1442 completed_index, VNIC_RQ_RETURN_DESC,
1443 enic_rq_indicate_buf, opaque);
1444
1445 return 0;
1446}
1447
01f2e4ea
SF		 1448static int enic_poll(struct napi_struct *napi, int budget)
1449{
1450 struct enic *enic = container_of(napi, struct enic, napi);
01f2e4ea
SF		 1451 unsigned int rq_work_to_do = budget;
1452 unsigned int wq_work_to_do = -1; /* no limit */
1453 unsigned int work_done, rq_work_done, wq_work_done;
2d6ddced 1454 int err;
01f2e4ea
SF		 1455
1456 /* Service RQ (first) and WQ
1457 */
1458
1459 rq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
1460 rq_work_to_do, enic_rq_service, NULL);
1461
1462 wq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
1463 wq_work_to_do, enic_wq_service, NULL);
1464
1465 /* Accumulate intr event credits for this polling
1466 * cycle. An intr event is the completion of a
1467 * a WQ or RQ packet.
1468 */
1469
1470 work_done = rq_work_done + wq_work_done;
1471
1472 if (work_done > 0)
1473 vnic_intr_return_credits(&enic->intr[ENIC_INTX_WQ_RQ],
1474 work_done,
1475 0 /* don't unmask intr */,
1476 0 /* don't reset intr timer */);
1477
2d6ddced 1478 err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
01f2e4ea 1479
2d6ddced
SF		 1480 /* Buffer allocation failed. Stay in polling
1481 * mode so we can try to fill the ring again.
1482 */
01f2e4ea 1483
2d6ddced
SF		 1484 if (err)
1485 rq_work_done = rq_work_to_do;
01f2e4ea 1486
2d6ddced 1487 if (rq_work_done < rq_work_to_do) {
01f2e4ea 1488
2d6ddced 1489 /* Some work done, but not enough to stay in polling,
88132f55 1490 * exit polling
01f2e4ea
SF		 1491 */
1492
288379f0 1493 napi_complete(napi);
ed8af6b2 1494 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
01f2e4ea
SF		 1495 }
1496
1497 return rq_work_done;
1498}
1499
1500static int enic_poll_msix(struct napi_struct *napi, int budget)
1501{
1502 struct enic *enic = container_of(napi, struct enic, napi);
01f2e4ea
SF		 1503 unsigned int work_to_do = budget;
1504 unsigned int work_done;
2d6ddced 1505 int err;
01f2e4ea
SF		 1506
1507 /* Service RQ
1508 */
1509
1510 work_done = vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
1511 work_to_do, enic_rq_service, NULL);
1512
2d6ddced
SF		 1513 /* Return intr event credits for this polling
1514 * cycle. An intr event is the completion of a
1515 * RQ packet.
1516 */
01f2e4ea 1517
2d6ddced 1518 if (work_done > 0)
01f2e4ea
SF		 1519 vnic_intr_return_credits(&enic->intr[ENIC_MSIX_RQ],
1520 work_done,
1521 0 /* don't unmask intr */,
1522 0 /* don't reset intr timer */);
01f2e4ea 1523
2d6ddced
SF		 1524 err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
1525
1526 /* Buffer allocation failed. Stay in polling mode
1527 * so we can try to fill the ring again.
1528 */
1529
1530 if (err)
1531 work_done = work_to_do;
1532
1533 if (work_done < work_to_do) {
1534
1535 /* Some work done, but not enough to stay in polling,
88132f55 1536 * exit polling
01f2e4ea
SF		 1537 */
1538
288379f0 1539 napi_complete(napi);
01f2e4ea
SF		 1540 vnic_intr_unmask(&enic->intr[ENIC_MSIX_RQ]);
1541 }
1542
1543 return work_done;
1544}
1545
1546static void enic_notify_timer(unsigned long data)
1547{
1548 struct enic *enic = (struct enic *)data;
1549
1550 enic_notify_check(enic);
1551
25f0a061
SF		 1552 mod_timer(&enic->notify_timer,
1553 round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD));
01f2e4ea
SF		 1554}
1555
1556static void enic_free_intr(struct enic *enic)
1557{
1558 struct net_device *netdev = enic->netdev;
1559 unsigned int i;
1560
1561 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1562 case VNIC_DEV_INTR_MODE_INTX:
01f2e4ea
SF		 1563 free_irq(enic->pdev->irq, netdev);
1564 break;
8f4d248c
SF		 1565 case VNIC_DEV_INTR_MODE_MSI:
1566 free_irq(enic->pdev->irq, enic);
1567 break;
01f2e4ea
SF		 1568 case VNIC_DEV_INTR_MODE_MSIX:
1569 for (i = 0; i < ARRAY_SIZE(enic->msix); i++)
1570 if (enic->msix[i].requested)
1571 free_irq(enic->msix_entry[i].vector,
1572 enic->msix[i].devid);
1573 break;
1574 default:
1575 break;
1576 }
1577}
1578
1579static int enic_request_intr(struct enic *enic)
1580{
1581 struct net_device *netdev = enic->netdev;
1582 unsigned int i;
1583 int err = 0;
1584
1585 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1586
1587 case VNIC_DEV_INTR_MODE_INTX:
1588
1589 err = request_irq(enic->pdev->irq, enic_isr_legacy,
1590 IRQF_SHARED, netdev->name, netdev);
1591 break;
1592
1593 case VNIC_DEV_INTR_MODE_MSI:
1594
1595 err = request_irq(enic->pdev->irq, enic_isr_msi,
1596 0, netdev->name, enic);
1597 break;
1598
1599 case VNIC_DEV_INTR_MODE_MSIX:
1600
1601 sprintf(enic->msix[ENIC_MSIX_RQ].devname,
8f4d248c 1602 "%.11s-rx-0", netdev->name);
01f2e4ea
SF		 1603 enic->msix[ENIC_MSIX_RQ].isr = enic_isr_msix_rq;
1604 enic->msix[ENIC_MSIX_RQ].devid = enic;
1605
1606 sprintf(enic->msix[ENIC_MSIX_WQ].devname,
8f4d248c 1607 "%.11s-tx-0", netdev->name);
01f2e4ea
SF		 1608 enic->msix[ENIC_MSIX_WQ].isr = enic_isr_msix_wq;
1609 enic->msix[ENIC_MSIX_WQ].devid = enic;
1610
1611 sprintf(enic->msix[ENIC_MSIX_ERR].devname,
1612 "%.11s-err", netdev->name);
1613 enic->msix[ENIC_MSIX_ERR].isr = enic_isr_msix_err;
1614 enic->msix[ENIC_MSIX_ERR].devid = enic;
1615
1616 sprintf(enic->msix[ENIC_MSIX_NOTIFY].devname,
1617 "%.11s-notify", netdev->name);
1618 enic->msix[ENIC_MSIX_NOTIFY].isr = enic_isr_msix_notify;
1619 enic->msix[ENIC_MSIX_NOTIFY].devid = enic;
1620
1621 for (i = 0; i < ARRAY_SIZE(enic->msix); i++) {
1622 err = request_irq(enic->msix_entry[i].vector,
1623 enic->msix[i].isr, 0,
1624 enic->msix[i].devname,
1625 enic->msix[i].devid);
1626 if (err) {
1627 enic_free_intr(enic);
1628 break;
1629 }
1630 enic->msix[i].requested = 1;
1631 }
1632
1633 break;
1634
1635 default:
1636 break;
1637 }
1638
1639 return err;
1640}
1641
b3d18d19
SF		 1642static void enic_synchronize_irqs(struct enic *enic)
1643{
1644 unsigned int i;
1645
1646 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1647 case VNIC_DEV_INTR_MODE_INTX:
1648 case VNIC_DEV_INTR_MODE_MSI:
1649 synchronize_irq(enic->pdev->irq);
1650 break;
1651 case VNIC_DEV_INTR_MODE_MSIX:
1652 for (i = 0; i < enic->intr_count; i++)
1653 synchronize_irq(enic->msix_entry[i].vector);
1654 break;
1655 default:
1656 break;
1657 }
1658}
1659
383ab92f 1660static int enic_dev_notify_set(struct enic *enic)
01f2e4ea
SF		 1661{
1662 int err;
1663
56ac88b3 1664 spin_lock(&enic->devcmd_lock);
01f2e4ea
SF		 1665 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1666 case VNIC_DEV_INTR_MODE_INTX:
1667 err = vnic_dev_notify_set(enic->vdev, ENIC_INTX_NOTIFY);
1668 break;
1669 case VNIC_DEV_INTR_MODE_MSIX:
1670 err = vnic_dev_notify_set(enic->vdev, ENIC_MSIX_NOTIFY);
1671 break;
1672 default:
1673 err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */);
1674 break;
1675 }
56ac88b3 1676 spin_unlock(&enic->devcmd_lock);
01f2e4ea
SF		 1677
1678 return err;
1679}
1680
383ab92f
VK		 1681static int enic_dev_notify_unset(struct enic *enic)
1682{
1683 int err;
1684
1685 spin_lock(&enic->devcmd_lock);
1686 err = vnic_dev_notify_unset(enic->vdev);
1687 spin_unlock(&enic->devcmd_lock);
1688
1689 return err;
1690}
1691
1692static int enic_dev_enable(struct enic *enic)
1693{
1694 int err;
1695
1696 spin_lock(&enic->devcmd_lock);
1697 err = vnic_dev_enable(enic->vdev);
1698 spin_unlock(&enic->devcmd_lock);
1699
1700 return err;
1701}
1702
1703static int enic_dev_disable(struct enic *enic)
1704{
1705 int err;
1706
1707 spin_lock(&enic->devcmd_lock);
1708 err = vnic_dev_disable(enic->vdev);
1709 spin_unlock(&enic->devcmd_lock);
1710
1711 return err;
1712}
1713
01f2e4ea
SF		 1714static void enic_notify_timer_start(struct enic *enic)
1715{
1716 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1717 case VNIC_DEV_INTR_MODE_MSI:
1718 mod_timer(&enic->notify_timer, jiffies);
1719 break;
1720 default:
1721 /* Using intr for notification for INTx/MSI-X */
1722 break;
1723 };
1724}
1725
1726/* rtnl lock is held, process context */
1727static int enic_open(struct net_device *netdev)
1728{
1729 struct enic *enic = netdev_priv(netdev);
1730 unsigned int i;
1731 int err;
1732
4b75a442
SF		 1733 err = enic_request_intr(enic);
1734 if (err) {
a7a79deb 1735 netdev_err(netdev, "Unable to request irq.\n");
4b75a442
SF		 1736 return err;
1737 }
1738
383ab92f 1739 err = enic_dev_notify_set(enic);
4b75a442 1740 if (err) {
a7a79deb
VK		 1741 netdev_err(netdev,
1742 "Failed to alloc notify buffer, aborting.\n");
4b75a442
SF		 1743 goto err_out_free_intr;
1744 }
1745
01f2e4ea 1746 for (i = 0; i < enic->rq_count; i++) {
2d6ddced
SF		 1747 vnic_rq_fill(&enic->rq[i], enic->rq_alloc_buf);
1748 /* Need at least one buffer on ring to get going */
1749 if (vnic_rq_desc_used(&enic->rq[i]) == 0) {
a7a79deb 1750 netdev_err(netdev, "Unable to alloc receive buffers\n");
2d6ddced 1751 err = -ENOMEM;
4b75a442 1752 goto err_out_notify_unset;
01f2e4ea
SF		 1753 }
1754 }
1755
1756 for (i = 0; i < enic->wq_count; i++)
1757 vnic_wq_enable(&enic->wq[i]);
1758 for (i = 0; i < enic->rq_count; i++)
1759 vnic_rq_enable(&enic->rq[i]);
1760
f8bd9091 1761 enic_dev_add_station_addr(enic);
01f2e4ea
SF		 1762 enic_set_multicast_list(netdev);
1763
1764 netif_wake_queue(netdev);
1765 napi_enable(&enic->napi);
383ab92f 1766 enic_dev_enable(enic);
01f2e4ea
SF		 1767
1768 for (i = 0; i < enic->intr_count; i++)
1769 vnic_intr_unmask(&enic->intr[i]);
1770
1771 enic_notify_timer_start(enic);
1772
1773 return 0;
4b75a442
SF		 1774
1775err_out_notify_unset:
383ab92f 1776 enic_dev_notify_unset(enic);
4b75a442
SF		 1777err_out_free_intr:
1778 enic_free_intr(enic);
1779
1780 return err;
01f2e4ea
SF		 1781}
1782
1783/* rtnl lock is held, process context */
1784static int enic_stop(struct net_device *netdev)
1785{
1786 struct enic *enic = netdev_priv(netdev);
1787 unsigned int i;
1788 int err;
1789
29046f9b 1790 for (i = 0; i < enic->intr_count; i++) {
b3d18d19 1791 vnic_intr_mask(&enic->intr[i]);
29046f9b
VK		 1792 (void)vnic_intr_masked(&enic->intr[i]); /* flush write */
1793 }
b3d18d19
SF		 1794
1795 enic_synchronize_irqs(enic);
1796
01f2e4ea
SF		 1797 del_timer_sync(&enic->notify_timer);
1798
383ab92f 1799 enic_dev_disable(enic);
01f2e4ea 1800 napi_disable(&enic->napi);
b3d18d19
SF		 1801 netif_carrier_off(netdev);
1802 netif_tx_disable(netdev);
f8bd9091
SF		 1803 enic_dev_del_station_addr(enic);
1804
01f2e4ea
SF		 1805 for (i = 0; i < enic->wq_count; i++) {
1806 err = vnic_wq_disable(&enic->wq[i]);
1807 if (err)
1808 return err;
1809 }
1810 for (i = 0; i < enic->rq_count; i++) {
1811 err = vnic_rq_disable(&enic->rq[i]);
1812 if (err)
1813 return err;
1814 }
1815
383ab92f 1816 enic_dev_notify_unset(enic);
4b75a442
SF		 1817 enic_free_intr(enic);
1818
01f2e4ea
SF		 1819 for (i = 0; i < enic->wq_count; i++)
1820 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
1821 for (i = 0; i < enic->rq_count; i++)
1822 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
1823 for (i = 0; i < enic->cq_count; i++)
1824 vnic_cq_clean(&enic->cq[i]);
1825 for (i = 0; i < enic->intr_count; i++)
1826 vnic_intr_clean(&enic->intr[i]);
1827
1828 return 0;
1829}
1830
1831static int enic_change_mtu(struct net_device *netdev, int new_mtu)
1832{
1833 struct enic *enic = netdev_priv(netdev);
1834 int running = netif_running(netdev);
1835
25f0a061
SF		 1836 if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU)
1837 return -EINVAL;
1838
01f2e4ea
SF		 1839 if (running)
1840 enic_stop(netdev);
1841
01f2e4ea
SF		 1842 netdev->mtu = new_mtu;
1843
1844 if (netdev->mtu > enic->port_mtu)
a7a79deb
VK		 1845 netdev_warn(netdev,
1846 "interface MTU (%d) set higher than port MTU (%d)\n",
1847 netdev->mtu, enic->port_mtu);
01f2e4ea
SF		 1848
1849 if (running)
1850 enic_open(netdev);
1851
1852 return 0;
1853}
1854
1855#ifdef CONFIG_NET_POLL_CONTROLLER
1856static void enic_poll_controller(struct net_device *netdev)
1857{
1858 struct enic *enic = netdev_priv(netdev);
1859 struct vnic_dev *vdev = enic->vdev;
1860
1861 switch (vnic_dev_get_intr_mode(vdev)) {
1862 case VNIC_DEV_INTR_MODE_MSIX:
1863 enic_isr_msix_rq(enic->pdev->irq, enic);
1864 enic_isr_msix_wq(enic->pdev->irq, enic);
1865 break;
1866 case VNIC_DEV_INTR_MODE_MSI:
1867 enic_isr_msi(enic->pdev->irq, enic);
1868 break;
1869 case VNIC_DEV_INTR_MODE_INTX:
1870 enic_isr_legacy(enic->pdev->irq, netdev);
1871 break;
1872 default:
1873 break;
1874 }
1875}
1876#endif
1877
1878static int enic_dev_wait(struct vnic_dev *vdev,
1879 int (*start)(struct vnic_dev *, int),
1880 int (*finished)(struct vnic_dev *, int *),
1881 int arg)
1882{
1883 unsigned long time;
1884 int done;
1885 int err;
1886
1887 BUG_ON(in_interrupt());
1888
1889 err = start(vdev, arg);
1890 if (err)
1891 return err;
1892
1893 /* Wait for func to complete...2 seconds max
1894 */
1895
1896 time = jiffies + (HZ * 2);
1897 do {
1898
1899 err = finished(vdev, &done);
1900 if (err)
1901 return err;
1902
1903 if (done)
1904 return 0;
1905
1906 schedule_timeout_uninterruptible(HZ / 10);
1907
1908 } while (time_after(time, jiffies));
1909
1910 return -ETIMEDOUT;
1911}
1912
1913static int enic_dev_open(struct enic *enic)
1914{
1915 int err;
1916
1917 err = enic_dev_wait(enic->vdev, vnic_dev_open,
1918 vnic_dev_open_done, 0);
1919 if (err)
a7a79deb
VK		 1920 dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n",
1921 err);
01f2e4ea
SF		 1922
1923 return err;
1924}
1925
99ef5639 1926static int enic_dev_hang_reset(struct enic *enic)
01f2e4ea
SF		 1927{
1928 int err;
1929
99ef5639
VK		 1930 err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset,
1931 vnic_dev_hang_reset_done, 0);
01f2e4ea 1932 if (err)
a7a79deb
VK		 1933 netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n",
1934 err);
01f2e4ea
SF		 1935
1936 return err;
1937}
1938
68f71708
SF		 1939static int enic_set_niccfg(struct enic *enic)
1940{
1941 const u8 rss_default_cpu = 0;
1942 const u8 rss_hash_type = 0;
1943 const u8 rss_hash_bits = 0;
1944 const u8 rss_base_cpu = 0;
1945 const u8 rss_enable = 0;
1946 const u8 tso_ipid_split_en = 0;
1947 const u8 ig_vlan_strip_en = 1;
383ab92f 1948 int err;
68f71708
SF		 1949
1950 /* Enable VLAN tag stripping. RSS not enabled (yet).
6ba9cdc0 1951 */
68f71708 1952
383ab92f
VK		 1953 spin_lock(&enic->devcmd_lock);
1954 err = enic_set_nic_cfg(enic,
68f71708
SF		 1955 rss_default_cpu, rss_hash_type,
1956 rss_hash_bits, rss_base_cpu,
1957 rss_enable, tso_ipid_split_en,
1958 ig_vlan_strip_en);
383ab92f
VK		 1959 spin_unlock(&enic->devcmd_lock);
1960
1961 return err;
1962}
1963
1964static int enic_dev_hang_notify(struct enic *enic)
1965{
1966 int err;
1967
1968 spin_lock(&enic->devcmd_lock);
1969 err = vnic_dev_hang_notify(enic->vdev);
1970 spin_unlock(&enic->devcmd_lock);
1971
1972 return err;
68f71708
SF		 1973}
1974
2fdba388 1975static int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic)
f8cac14a
VK		 1976{
1977 int err;
1978
1979 spin_lock(&enic->devcmd_lock);
1980 err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
1981 IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN);
1982 spin_unlock(&enic->devcmd_lock);
1983
1984 return err;
1985}
1986
01f2e4ea
SF		 1987static void enic_reset(struct work_struct *work)
1988{
1989 struct enic *enic = container_of(work, struct enic, reset);
1990
1991 if (!netif_running(enic->netdev))
1992 return;
1993
1994 rtnl_lock();
1995
383ab92f 1996 enic_dev_hang_notify(enic);
01f2e4ea 1997 enic_stop(enic->netdev);
99ef5639
VK		 1998 enic_dev_hang_reset(enic);
1999 enic_reset_multicast_list(enic);
01f2e4ea 2000 enic_init_vnic_resources(enic);
68f71708 2001 enic_set_niccfg(enic);
f8cac14a 2002 enic_dev_set_ig_vlan_rewrite_mode(enic);
01f2e4ea
SF		 2003 enic_open(enic->netdev);
2004
2005 rtnl_unlock();
2006}
2007
2008static int enic_set_intr_mode(struct enic *enic)
2009{
6ba9cdc0
SF		 2010 unsigned int n = 1;
2011 unsigned int m = 1;
01f2e4ea
SF		 2012 unsigned int i;
2013
2014 /* Set interrupt mode (INTx, MSI, MSI-X) depending
2015 * system capabilities.
2016 *
2017 * Try MSI-X first
2018 *
2019 * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs
2020 * (the second to last INTR is used for WQ/RQ errors)
2021 * (the last INTR is used for notifications)
2022 */
2023
2024 BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2);
2025 for (i = 0; i < n + m + 2; i++)
2026 enic->msix_entry[i].entry = i;
2027
2028 if (enic->config.intr_mode < 1 &&
2029 enic->rq_count >= n &&
2030 enic->wq_count >= m &&
2031 enic->cq_count >= n + m &&
2032 enic->intr_count >= n + m + 2 &&
2033 !pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) {
2034
2035 enic->rq_count = n;
2036 enic->wq_count = m;
2037 enic->cq_count = n + m;
2038 enic->intr_count = n + m + 2;
2039
2040 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSIX);
2041
2042 return 0;
2043 }
2044
2045 /* Next try MSI
2046 *
2047 * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR
2048 */
2049
2050 if (enic->config.intr_mode < 2 &&
2051 enic->rq_count >= 1 &&
2052 enic->wq_count >= 1 &&
2053 enic->cq_count >= 2 &&
2054 enic->intr_count >= 1 &&
2055 !pci_enable_msi(enic->pdev)) {
2056
2057 enic->rq_count = 1;
2058 enic->wq_count = 1;
2059 enic->cq_count = 2;
2060 enic->intr_count = 1;
2061
2062 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI);
2063
2064 return 0;
2065 }
2066
2067 /* Next try INTx
2068 *
2069 * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs
2070 * (the first INTR is used for WQ/RQ)
2071 * (the second INTR is used for WQ/RQ errors)
2072 * (the last INTR is used for notifications)
2073 */
2074
2075 if (enic->config.intr_mode < 3 &&
2076 enic->rq_count >= 1 &&
2077 enic->wq_count >= 1 &&
2078 enic->cq_count >= 2 &&
2079 enic->intr_count >= 3) {
2080
2081 enic->rq_count = 1;
2082 enic->wq_count = 1;
2083 enic->cq_count = 2;
2084 enic->intr_count = 3;
2085
2086 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX);
2087
2088 return 0;
2089 }
2090
2091 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
2092
2093 return -EINVAL;
2094}
2095
2096static void enic_clear_intr_mode(struct enic *enic)
2097{
2098 switch (vnic_dev_get_intr_mode(enic->vdev)) {
2099 case VNIC_DEV_INTR_MODE_MSIX:
2100 pci_disable_msix(enic->pdev);
2101 break;
2102 case VNIC_DEV_INTR_MODE_MSI:
2103 pci_disable_msi(enic->pdev);
2104 break;
2105 default:
2106 break;
2107 }
2108
2109 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
2110}
2111
f8bd9091
SF		 2112static const struct net_device_ops enic_netdev_dynamic_ops = {
2113 .ndo_open = enic_open,
2114 .ndo_stop = enic_stop,
2115 .ndo_start_xmit = enic_hard_start_xmit,
2116 .ndo_get_stats = enic_get_stats,
2117 .ndo_validate_addr = eth_validate_addr,
2118 .ndo_set_multicast_list = enic_set_multicast_list,
2119 .ndo_set_mac_address = enic_set_mac_address_dynamic,
2120 .ndo_change_mtu = enic_change_mtu,
2121 .ndo_vlan_rx_register = enic_vlan_rx_register,
2122 .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
2123 .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
2124 .ndo_tx_timeout = enic_tx_timeout,
2125 .ndo_set_vf_port = enic_set_vf_port,
2126 .ndo_get_vf_port = enic_get_vf_port,
2127#ifdef CONFIG_NET_POLL_CONTROLLER
2128 .ndo_poll_controller = enic_poll_controller,
2129#endif
2130};
2131
afe29f7a
SH		 2132static const struct net_device_ops enic_netdev_ops = {
2133 .ndo_open = enic_open,
2134 .ndo_stop = enic_stop,
00829823 2135 .ndo_start_xmit = enic_hard_start_xmit,
afe29f7a
SH		 2136 .ndo_get_stats = enic_get_stats,
2137 .ndo_validate_addr = eth_validate_addr,
f8bd9091 2138 .ndo_set_mac_address = enic_set_mac_address,
383ab92f 2139 .ndo_set_multicast_list = enic_set_multicast_list,
afe29f7a
SH		 2140 .ndo_change_mtu = enic_change_mtu,
2141 .ndo_vlan_rx_register = enic_vlan_rx_register,
2142 .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
2143 .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
2144 .ndo_tx_timeout = enic_tx_timeout,
2145#ifdef CONFIG_NET_POLL_CONTROLLER
2146 .ndo_poll_controller = enic_poll_controller,
2147#endif
2148};
2149
2fdba388 2150static void enic_dev_deinit(struct enic *enic)
6fdfa970
SF		 2151{
2152 netif_napi_del(&enic->napi);
2153 enic_free_vnic_resources(enic);
2154 enic_clear_intr_mode(enic);
2155}
2156
2fdba388 2157static int enic_dev_init(struct enic *enic)
6fdfa970 2158{
a7a79deb 2159 struct device *dev = enic_get_dev(enic);
6fdfa970
SF		 2160 struct net_device *netdev = enic->netdev;
2161 int err;
2162
2163 /* Get vNIC configuration
2164 */
2165
2166 err = enic_get_vnic_config(enic);
2167 if (err) {
a7a79deb 2168 dev_err(dev, "Get vNIC configuration failed, aborting\n");
6fdfa970
SF		 2169 return err;
2170 }
2171
2172 /* Get available resource counts
2173 */
2174
2175 enic_get_res_counts(enic);
2176
2177 /* Set interrupt mode based on resource counts and system
2178 * capabilities
2179 */
2180
2181 err = enic_set_intr_mode(enic);
2182 if (err) {
a7a79deb
VK		 2183 dev_err(dev, "Failed to set intr mode based on resource "
2184 "counts and system capabilities, aborting\n");
6fdfa970
SF		 2185 return err;
2186 }
2187
2188 /* Allocate and configure vNIC resources
2189 */
2190
2191 err = enic_alloc_vnic_resources(enic);
2192 if (err) {
a7a79deb 2193 dev_err(dev, "Failed to alloc vNIC resources, aborting\n");
6fdfa970
SF		 2194 goto err_out_free_vnic_resources;
2195 }
2196
2197 enic_init_vnic_resources(enic);
2198
2199 err = enic_set_rq_alloc_buf(enic);
2200 if (err) {
a7a79deb 2201 dev_err(dev, "Failed to set RQ buffer allocator, aborting\n");
6fdfa970
SF		 2202 goto err_out_free_vnic_resources;
2203 }
2204
2205 err = enic_set_niccfg(enic);
2206 if (err) {
a7a79deb 2207 dev_err(dev, "Failed to config nic, aborting\n");
6fdfa970
SF		 2208 goto err_out_free_vnic_resources;
2209 }
2210
f8cac14a
VK		 2211 err = enic_dev_set_ig_vlan_rewrite_mode(enic);
2212 if (err) {
a7a79deb 2213 netdev_err(netdev,
f8cac14a
VK		 2214 "Failed to set ingress vlan rewrite mode, aborting.\n");
2215 goto err_out_free_vnic_resources;
2216 }
2217
6fdfa970
SF		 2218 switch (vnic_dev_get_intr_mode(enic->vdev)) {
2219 default:
2220 netif_napi_add(netdev, &enic->napi, enic_poll, 64);
2221 break;
2222 case VNIC_DEV_INTR_MODE_MSIX:
2223 netif_napi_add(netdev, &enic->napi, enic_poll_msix, 64);
2224 break;
2225 }
2226
2227 return 0;
2228
2229err_out_free_vnic_resources:
2230 enic_clear_intr_mode(enic);
2231 enic_free_vnic_resources(enic);
2232
2233 return err;
2234}
2235
27e6c7d3
SF		 2236static void enic_iounmap(struct enic *enic)
2237{
2238 unsigned int i;
2239
2240 for (i = 0; i < ARRAY_SIZE(enic->bar); i++)
2241 if (enic->bar[i].vaddr)
2242 iounmap(enic->bar[i].vaddr);
2243}
2244
01f2e4ea
SF		 2245static int __devinit enic_probe(struct pci_dev *pdev,
2246 const struct pci_device_id *ent)
2247{
a7a79deb 2248 struct device *dev = &pdev->dev;
01f2e4ea
SF		 2249 struct net_device *netdev;
2250 struct enic *enic;
2251 int using_dac = 0;
2252 unsigned int i;
2253 int err;
2254
01f2e4ea
SF		 2255 /* Allocate net device structure and initialize. Private
2256 * instance data is initialized to zero.
2257 */
2258
2259 netdev = alloc_etherdev(sizeof(struct enic));
2260 if (!netdev) {
a7a79deb 2261 pr_err("Etherdev alloc failed, aborting\n");
01f2e4ea
SF		 2262 return -ENOMEM;
2263 }
2264
01f2e4ea
SF		 2265 pci_set_drvdata(pdev, netdev);
2266
2267 SET_NETDEV_DEV(netdev, &pdev->dev);
2268
2269 enic = netdev_priv(netdev);
2270 enic->netdev = netdev;
2271 enic->pdev = pdev;
2272
2273 /* Setup PCI resources
2274 */
2275
29046f9b 2276 err = pci_enable_device_mem(pdev);
01f2e4ea 2277 if (err) {
a7a79deb 2278 dev_err(dev, "Cannot enable PCI device, aborting\n");
01f2e4ea
SF		 2279 goto err_out_free_netdev;
2280 }
2281
2282 err = pci_request_regions(pdev, DRV_NAME);
2283 if (err) {
a7a79deb 2284 dev_err(dev, "Cannot request PCI regions, aborting\n");
01f2e4ea
SF		 2285 goto err_out_disable_device;
2286 }
2287
2288 pci_set_master(pdev);
2289
2290 /* Query PCI controller on system for DMA addressing
2291 * limitation for the device. Try 40-bit first, and
2292 * fail to 32-bit.
2293 */
2294
50cf156a 2295 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
01f2e4ea 2296 if (err) {
284901a9 2297 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
01f2e4ea 2298 if (err) {
a7a79deb 2299 dev_err(dev, "No usable DMA configuration, aborting\n");
01f2e4ea
SF		 2300 goto err_out_release_regions;
2301 }
284901a9 2302 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
01f2e4ea 2303 if (err) {
a7a79deb
VK		 2304 dev_err(dev, "Unable to obtain %u-bit DMA "
2305 "for consistent allocations, aborting\n", 32);
01f2e4ea
SF		 2306 goto err_out_release_regions;
2307 }
2308 } else {
50cf156a 2309 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
01f2e4ea 2310 if (err) {
a7a79deb
VK		 2311 dev_err(dev, "Unable to obtain %u-bit DMA "
2312 "for consistent allocations, aborting\n", 40);
01f2e4ea
SF		 2313 goto err_out_release_regions;
2314 }
2315 using_dac = 1;
2316 }
2317
27e6c7d3 2318 /* Map vNIC resources from BAR0-5
01f2e4ea
SF		 2319 */
2320
27e6c7d3
SF		 2321 for (i = 0; i < ARRAY_SIZE(enic->bar); i++) {
2322 if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM))
2323 continue;
2324 enic->bar[i].len = pci_resource_len(pdev, i);
2325 enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len);
2326 if (!enic->bar[i].vaddr) {
a7a79deb 2327 dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i);
27e6c7d3
SF		 2328 err = -ENODEV;
2329 goto err_out_iounmap;
2330 }
2331 enic->bar[i].bus_addr = pci_resource_start(pdev, i);
01f2e4ea
SF		 2332 }
2333
2334 /* Register vNIC device
2335 */
2336
27e6c7d3
SF		 2337 enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar,
2338 ARRAY_SIZE(enic->bar));
01f2e4ea 2339 if (!enic->vdev) {
a7a79deb 2340 dev_err(dev, "vNIC registration failed, aborting\n");
01f2e4ea
SF		 2341 err = -ENODEV;
2342 goto err_out_iounmap;
2343 }
2344
2345 /* Issue device open to get device in known state
2346 */
2347
2348 err = enic_dev_open(enic);
2349 if (err) {
a7a79deb 2350 dev_err(dev, "vNIC dev open failed, aborting\n");
01f2e4ea
SF		 2351 goto err_out_vnic_unregister;
2352 }
2353
2354 /* Issue device init to initialize the vnic-to-switch link.
2355 * We'll start with carrier off and wait for link UP
2356 * notification later to turn on carrier. We don't need
2357 * to wait here for the vnic-to-switch link initialization
2358 * to complete; link UP notification is the indication that
2359 * the process is complete.
2360 */
2361
2362 netif_carrier_off(netdev);
2363
a7a79deb
VK		 2364 /* Do not call dev_init for a dynamic vnic.
2365 * For a dynamic vnic, init_prov_info will be
2366 * called later by an upper layer.
2367 */
2368
f8bd9091
SF		 2369 if (!enic_is_dynamic(enic)) {
2370 err = vnic_dev_init(enic->vdev, 0);
2371 if (err) {
a7a79deb 2372 dev_err(dev, "vNIC dev init failed, aborting\n");
f8bd9091
SF		 2373 goto err_out_dev_close;
2374 }
01f2e4ea
SF		 2375 }
2376
383ab92f
VK		 2377 /* Setup devcmd lock
2378 */
2379
2380 spin_lock_init(&enic->devcmd_lock);
2381
6fdfa970 2382 err = enic_dev_init(enic);
01f2e4ea 2383 if (err) {
a7a79deb 2384 dev_err(dev, "Device initialization failed, aborting\n");
01f2e4ea
SF		 2385 goto err_out_dev_close;
2386 }
2387
383ab92f 2388 /* Setup notification timer, HW reset task, and wq locks
01f2e4ea
SF		 2389 */
2390
2391 init_timer(&enic->notify_timer);
2392 enic->notify_timer.function = enic_notify_timer;
2393 enic->notify_timer.data = (unsigned long)enic;
2394
2395 INIT_WORK(&enic->reset, enic_reset);
2396
2397 for (i = 0; i < enic->wq_count; i++)
2398 spin_lock_init(&enic->wq_lock[i]);
2399
01f2e4ea
SF		 2400 /* Register net device
2401 */
2402
2403 enic->port_mtu = enic->config.mtu;
2404 (void)enic_change_mtu(netdev, enic->port_mtu);
2405
2406 err = enic_set_mac_addr(netdev, enic->mac_addr);
2407 if (err) {
a7a79deb 2408 dev_err(dev, "Invalid MAC address, aborting\n");
6fdfa970 2409 goto err_out_dev_deinit;
01f2e4ea
SF		 2410 }
2411
7c844599
SF		 2412 enic->tx_coalesce_usecs = enic->config.intr_timer_usec;
2413 enic->rx_coalesce_usecs = enic->tx_coalesce_usecs;
2414
f8bd9091
SF		 2415 if (enic_is_dynamic(enic))
2416 netdev->netdev_ops = &enic_netdev_dynamic_ops;
2417 else
2418 netdev->netdev_ops = &enic_netdev_ops;
2419
01f2e4ea
SF		 2420 netdev->watchdog_timeo = 2 * HZ;
2421 netdev->ethtool_ops = &enic_ethtool_ops;
01f2e4ea 2422
73c1ea9b 2423 netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1825aca6
VK		 2424 if (ENIC_SETTING(enic, LOOP)) {
2425 netdev->features &= ~NETIF_F_HW_VLAN_TX;
2426 enic->loop_enable = 1;
2427 enic->loop_tag = enic->config.loop_tag;
2428 dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag);
2429 }
01f2e4ea
SF		 2430 if (ENIC_SETTING(enic, TXCSUM))
2431 netdev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
2432 if (ENIC_SETTING(enic, TSO))
2433 netdev->features |= NETIF_F_TSO |
2434 NETIF_F_TSO6 | NETIF_F_TSO_ECN;
86ca9db7 2435 if (ENIC_SETTING(enic, LRO))
88132f55 2436 netdev->features |= NETIF_F_GRO;
01f2e4ea
SF		 2437 if (using_dac)
2438 netdev->features |= NETIF_F_HIGHDMA;
2439
01f2e4ea
SF		 2440 enic->csum_rx_enabled = ENIC_SETTING(enic, RXCSUM);
2441
01f2e4ea
SF		 2442 err = register_netdev(netdev);
2443 if (err) {
a7a79deb 2444 dev_err(dev, "Cannot register net device, aborting\n");
6fdfa970 2445 goto err_out_dev_deinit;
01f2e4ea
SF		 2446 }
2447
2448 return 0;
2449
6fdfa970
SF		 2450err_out_dev_deinit:
2451 enic_dev_deinit(enic);
01f2e4ea
SF		 2452err_out_dev_close:
2453 vnic_dev_close(enic->vdev);
2454err_out_vnic_unregister:
01f2e4ea
SF		 2455 vnic_dev_unregister(enic->vdev);
2456err_out_iounmap:
2457 enic_iounmap(enic);
2458err_out_release_regions:
2459 pci_release_regions(pdev);
2460err_out_disable_device:
2461 pci_disable_device(pdev);
2462err_out_free_netdev:
2463 pci_set_drvdata(pdev, NULL);
2464 free_netdev(netdev);
2465
2466 return err;
2467}
2468
2469static void __devexit enic_remove(struct pci_dev *pdev)
2470{
2471 struct net_device *netdev = pci_get_drvdata(pdev);
2472
2473 if (netdev) {
2474 struct enic *enic = netdev_priv(netdev);
2475
2476 flush_scheduled_work();
2477 unregister_netdev(netdev);
6fdfa970 2478 enic_dev_deinit(enic);
01f2e4ea 2479 vnic_dev_close(enic->vdev);
01f2e4ea
SF		 2480 vnic_dev_unregister(enic->vdev);
2481 enic_iounmap(enic);
2482 pci_release_regions(pdev);
2483 pci_disable_device(pdev);
2484 pci_set_drvdata(pdev, NULL);
2485 free_netdev(netdev);
2486 }
2487}
2488
2489static struct pci_driver enic_driver = {
2490 .name = DRV_NAME,
2491 .id_table = enic_id_table,
2492 .probe = enic_probe,
2493 .remove = __devexit_p(enic_remove),
2494};
2495
2496static int __init enic_init_module(void)
2497{
a7a79deb 2498 pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
01f2e4ea
SF		 2499
2500 return pci_register_driver(&enic_driver);
2501}
2502
2503static void __exit enic_cleanup_module(void)
2504{
2505 pci_unregister_driver(&enic_driver);
2506}
2507
2508module_init(enic_init_module);
2509module_exit(enic_cleanup_module);
Clone of davem's net-next-2.6 tree