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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> | |
a6b7a407 | 26 | #include <linux/interrupt.h> |
01f2e4ea SF |
27 | #include <linux/workqueue.h> |
28 | #include <linux/pci.h> | |
29 | #include <linux/netdevice.h> | |
30 | #include <linux/etherdevice.h> | |
01789349 | 31 | #include <linux/if.h> |
01f2e4ea SF |
32 | #include <linux/if_ether.h> |
33 | #include <linux/if_vlan.h> | |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/in.h> | |
36 | #include <linux/ip.h> | |
37 | #include <linux/ipv6.h> | |
38 | #include <linux/tcp.h> | |
29046f9b | 39 | #include <linux/rtnetlink.h> |
70c71606 | 40 | #include <linux/prefetch.h> |
b7c6bfb7 | 41 | #include <net/ip6_checksum.h> |
01f2e4ea SF |
42 | |
43 | #include "cq_enet_desc.h" | |
44 | #include "vnic_dev.h" | |
45 | #include "vnic_intr.h" | |
46 | #include "vnic_stats.h" | |
f8bd9091 | 47 | #include "vnic_vic.h" |
01f2e4ea SF |
48 | #include "enic_res.h" |
49 | #include "enic.h" | |
51987461 | 50 | #include "enic_dev.h" |
b3abfbd2 | 51 | #include "enic_pp.h" |
01f2e4ea SF |
52 | |
53 | #define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ) | |
ea0d7d91 SF |
54 | #define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS) |
55 | #define MAX_TSO (1 << 16) | |
56 | #define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1) | |
57 | ||
58 | #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */ | |
f8bd9091 | 59 | #define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */ |
01f2e4ea SF |
60 | |
61 | /* Supported devices */ | |
a3aa1884 | 62 | static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = { |
ea0d7d91 | 63 | { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) }, |
f8bd9091 | 64 | { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) }, |
01f2e4ea SF |
65 | { 0, } /* end of table */ |
66 | }; | |
67 | ||
68 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
69 | MODULE_AUTHOR("Scott Feldman <scofeldm@cisco.com>"); | |
70 | MODULE_LICENSE("GPL"); | |
71 | MODULE_VERSION(DRV_VERSION); | |
72 | MODULE_DEVICE_TABLE(pci, enic_id_table); | |
73 | ||
74 | struct enic_stat { | |
75 | char name[ETH_GSTRING_LEN]; | |
76 | unsigned int offset; | |
77 | }; | |
78 | ||
79 | #define ENIC_TX_STAT(stat) \ | |
80 | { .name = #stat, .offset = offsetof(struct vnic_tx_stats, stat) / 8 } | |
81 | #define ENIC_RX_STAT(stat) \ | |
82 | { .name = #stat, .offset = offsetof(struct vnic_rx_stats, stat) / 8 } | |
83 | ||
84 | static const struct enic_stat enic_tx_stats[] = { | |
85 | ENIC_TX_STAT(tx_frames_ok), | |
86 | ENIC_TX_STAT(tx_unicast_frames_ok), | |
87 | ENIC_TX_STAT(tx_multicast_frames_ok), | |
88 | ENIC_TX_STAT(tx_broadcast_frames_ok), | |
89 | ENIC_TX_STAT(tx_bytes_ok), | |
90 | ENIC_TX_STAT(tx_unicast_bytes_ok), | |
91 | ENIC_TX_STAT(tx_multicast_bytes_ok), | |
92 | ENIC_TX_STAT(tx_broadcast_bytes_ok), | |
93 | ENIC_TX_STAT(tx_drops), | |
94 | ENIC_TX_STAT(tx_errors), | |
95 | ENIC_TX_STAT(tx_tso), | |
96 | }; | |
97 | ||
98 | static const struct enic_stat enic_rx_stats[] = { | |
99 | ENIC_RX_STAT(rx_frames_ok), | |
100 | ENIC_RX_STAT(rx_frames_total), | |
101 | ENIC_RX_STAT(rx_unicast_frames_ok), | |
102 | ENIC_RX_STAT(rx_multicast_frames_ok), | |
103 | ENIC_RX_STAT(rx_broadcast_frames_ok), | |
104 | ENIC_RX_STAT(rx_bytes_ok), | |
105 | ENIC_RX_STAT(rx_unicast_bytes_ok), | |
106 | ENIC_RX_STAT(rx_multicast_bytes_ok), | |
107 | ENIC_RX_STAT(rx_broadcast_bytes_ok), | |
108 | ENIC_RX_STAT(rx_drop), | |
109 | ENIC_RX_STAT(rx_no_bufs), | |
110 | ENIC_RX_STAT(rx_errors), | |
111 | ENIC_RX_STAT(rx_rss), | |
112 | ENIC_RX_STAT(rx_crc_errors), | |
113 | ENIC_RX_STAT(rx_frames_64), | |
114 | ENIC_RX_STAT(rx_frames_127), | |
115 | ENIC_RX_STAT(rx_frames_255), | |
116 | ENIC_RX_STAT(rx_frames_511), | |
117 | ENIC_RX_STAT(rx_frames_1023), | |
118 | ENIC_RX_STAT(rx_frames_1518), | |
119 | ENIC_RX_STAT(rx_frames_to_max), | |
120 | }; | |
121 | ||
122 | static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats); | |
123 | static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats); | |
124 | ||
3f192795 | 125 | int enic_is_dynamic(struct enic *enic) |
f8bd9091 SF |
126 | { |
127 | return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN; | |
128 | } | |
129 | ||
8749b427 RP |
130 | int enic_sriov_enabled(struct enic *enic) |
131 | { | |
132 | return (enic->priv_flags & ENIC_SRIOV_ENABLED) ? 1 : 0; | |
133 | } | |
134 | ||
889d13f5 RP |
135 | int enic_is_valid_vf(struct enic *enic, int vf) |
136 | { | |
137 | #ifdef CONFIG_PCI_IOV | |
138 | return vf >= 0 && vf < enic->num_vfs; | |
139 | #else | |
140 | return 0; | |
141 | #endif | |
142 | } | |
143 | ||
717258ba VK |
144 | static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq) |
145 | { | |
146 | return rq; | |
147 | } | |
148 | ||
149 | static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) | |
150 | { | |
151 | return enic->rq_count + wq; | |
152 | } | |
153 | ||
154 | static inline unsigned int enic_legacy_io_intr(void) | |
155 | { | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static inline unsigned int enic_legacy_err_intr(void) | |
160 | { | |
161 | return 1; | |
162 | } | |
163 | ||
164 | static inline unsigned int enic_legacy_notify_intr(void) | |
165 | { | |
166 | return 2; | |
167 | } | |
168 | ||
169 | static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq) | |
170 | { | |
7d260ec2 | 171 | return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset; |
717258ba VK |
172 | } |
173 | ||
174 | static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq) | |
175 | { | |
7d260ec2 | 176 | return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset; |
717258ba VK |
177 | } |
178 | ||
179 | static inline unsigned int enic_msix_err_intr(struct enic *enic) | |
180 | { | |
181 | return enic->rq_count + enic->wq_count; | |
182 | } | |
183 | ||
184 | static inline unsigned int enic_msix_notify_intr(struct enic *enic) | |
185 | { | |
186 | return enic->rq_count + enic->wq_count + 1; | |
187 | } | |
188 | ||
01f2e4ea SF |
189 | static int enic_get_settings(struct net_device *netdev, |
190 | struct ethtool_cmd *ecmd) | |
191 | { | |
192 | struct enic *enic = netdev_priv(netdev); | |
193 | ||
194 | ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE); | |
195 | ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE); | |
196 | ecmd->port = PORT_FIBRE; | |
197 | ecmd->transceiver = XCVR_EXTERNAL; | |
198 | ||
199 | if (netif_carrier_ok(netdev)) { | |
70739497 | 200 | ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev)); |
01f2e4ea SF |
201 | ecmd->duplex = DUPLEX_FULL; |
202 | } else { | |
70739497 | 203 | ethtool_cmd_speed_set(ecmd, -1); |
01f2e4ea SF |
204 | ecmd->duplex = -1; |
205 | } | |
206 | ||
207 | ecmd->autoneg = AUTONEG_DISABLE; | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | static void enic_get_drvinfo(struct net_device *netdev, | |
213 | struct ethtool_drvinfo *drvinfo) | |
214 | { | |
215 | struct enic *enic = netdev_priv(netdev); | |
216 | struct vnic_devcmd_fw_info *fw_info; | |
217 | ||
383ab92f | 218 | enic_dev_fw_info(enic, &fw_info); |
01f2e4ea SF |
219 | |
220 | strncpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); | |
221 | strncpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version)); | |
222 | strncpy(drvinfo->fw_version, fw_info->fw_version, | |
223 | sizeof(drvinfo->fw_version)); | |
224 | strncpy(drvinfo->bus_info, pci_name(enic->pdev), | |
225 | sizeof(drvinfo->bus_info)); | |
226 | } | |
227 | ||
228 | static void enic_get_strings(struct net_device *netdev, u32 stringset, u8 *data) | |
229 | { | |
230 | unsigned int i; | |
231 | ||
232 | switch (stringset) { | |
233 | case ETH_SS_STATS: | |
234 | for (i = 0; i < enic_n_tx_stats; i++) { | |
235 | memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN); | |
236 | data += ETH_GSTRING_LEN; | |
237 | } | |
238 | for (i = 0; i < enic_n_rx_stats; i++) { | |
239 | memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN); | |
240 | data += ETH_GSTRING_LEN; | |
241 | } | |
242 | break; | |
243 | } | |
244 | } | |
245 | ||
25f0a061 | 246 | static int enic_get_sset_count(struct net_device *netdev, int sset) |
01f2e4ea | 247 | { |
25f0a061 SF |
248 | switch (sset) { |
249 | case ETH_SS_STATS: | |
250 | return enic_n_tx_stats + enic_n_rx_stats; | |
251 | default: | |
252 | return -EOPNOTSUPP; | |
253 | } | |
01f2e4ea SF |
254 | } |
255 | ||
256 | static void enic_get_ethtool_stats(struct net_device *netdev, | |
257 | struct ethtool_stats *stats, u64 *data) | |
258 | { | |
259 | struct enic *enic = netdev_priv(netdev); | |
260 | struct vnic_stats *vstats; | |
261 | unsigned int i; | |
262 | ||
383ab92f | 263 | enic_dev_stats_dump(enic, &vstats); |
01f2e4ea SF |
264 | |
265 | for (i = 0; i < enic_n_tx_stats; i++) | |
266 | *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].offset]; | |
267 | for (i = 0; i < enic_n_rx_stats; i++) | |
268 | *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].offset]; | |
269 | } | |
270 | ||
01f2e4ea SF |
271 | static u32 enic_get_msglevel(struct net_device *netdev) |
272 | { | |
273 | struct enic *enic = netdev_priv(netdev); | |
274 | return enic->msg_enable; | |
275 | } | |
276 | ||
277 | static void enic_set_msglevel(struct net_device *netdev, u32 value) | |
278 | { | |
279 | struct enic *enic = netdev_priv(netdev); | |
280 | enic->msg_enable = value; | |
281 | } | |
282 | ||
7c844599 SF |
283 | static int enic_get_coalesce(struct net_device *netdev, |
284 | struct ethtool_coalesce *ecmd) | |
285 | { | |
286 | struct enic *enic = netdev_priv(netdev); | |
287 | ||
288 | ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs; | |
289 | ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs; | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | static int enic_set_coalesce(struct net_device *netdev, | |
295 | struct ethtool_coalesce *ecmd) | |
296 | { | |
297 | struct enic *enic = netdev_priv(netdev); | |
298 | u32 tx_coalesce_usecs; | |
299 | u32 rx_coalesce_usecs; | |
717258ba | 300 | unsigned int i, intr; |
7c844599 | 301 | |
ea7ea65a VK |
302 | tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs, |
303 | vnic_dev_get_intr_coal_timer_max(enic->vdev)); | |
304 | rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs, | |
305 | vnic_dev_get_intr_coal_timer_max(enic->vdev)); | |
7c844599 SF |
306 | |
307 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
308 | case VNIC_DEV_INTR_MODE_INTX: | |
309 | if (tx_coalesce_usecs != rx_coalesce_usecs) | |
310 | return -EINVAL; | |
311 | ||
717258ba VK |
312 | intr = enic_legacy_io_intr(); |
313 | vnic_intr_coalescing_timer_set(&enic->intr[intr], | |
ea7ea65a | 314 | tx_coalesce_usecs); |
7c844599 SF |
315 | break; |
316 | case VNIC_DEV_INTR_MODE_MSI: | |
317 | if (tx_coalesce_usecs != rx_coalesce_usecs) | |
318 | return -EINVAL; | |
319 | ||
320 | vnic_intr_coalescing_timer_set(&enic->intr[0], | |
ea7ea65a | 321 | tx_coalesce_usecs); |
7c844599 SF |
322 | break; |
323 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
324 | for (i = 0; i < enic->wq_count; i++) { |
325 | intr = enic_msix_wq_intr(enic, i); | |
326 | vnic_intr_coalescing_timer_set(&enic->intr[intr], | |
ea7ea65a | 327 | tx_coalesce_usecs); |
717258ba VK |
328 | } |
329 | ||
330 | for (i = 0; i < enic->rq_count; i++) { | |
331 | intr = enic_msix_rq_intr(enic, i); | |
332 | vnic_intr_coalescing_timer_set(&enic->intr[intr], | |
ea7ea65a | 333 | rx_coalesce_usecs); |
717258ba VK |
334 | } |
335 | ||
7c844599 SF |
336 | break; |
337 | default: | |
338 | break; | |
339 | } | |
340 | ||
341 | enic->tx_coalesce_usecs = tx_coalesce_usecs; | |
342 | enic->rx_coalesce_usecs = rx_coalesce_usecs; | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
0fc0b732 | 347 | static const struct ethtool_ops enic_ethtool_ops = { |
01f2e4ea SF |
348 | .get_settings = enic_get_settings, |
349 | .get_drvinfo = enic_get_drvinfo, | |
350 | .get_msglevel = enic_get_msglevel, | |
351 | .set_msglevel = enic_set_msglevel, | |
352 | .get_link = ethtool_op_get_link, | |
353 | .get_strings = enic_get_strings, | |
25f0a061 | 354 | .get_sset_count = enic_get_sset_count, |
01f2e4ea | 355 | .get_ethtool_stats = enic_get_ethtool_stats, |
7c844599 SF |
356 | .get_coalesce = enic_get_coalesce, |
357 | .set_coalesce = enic_set_coalesce, | |
01f2e4ea SF |
358 | }; |
359 | ||
360 | static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf) | |
361 | { | |
362 | struct enic *enic = vnic_dev_priv(wq->vdev); | |
363 | ||
364 | if (buf->sop) | |
365 | pci_unmap_single(enic->pdev, buf->dma_addr, | |
366 | buf->len, PCI_DMA_TODEVICE); | |
367 | else | |
368 | pci_unmap_page(enic->pdev, buf->dma_addr, | |
369 | buf->len, PCI_DMA_TODEVICE); | |
370 | ||
371 | if (buf->os_buf) | |
372 | dev_kfree_skb_any(buf->os_buf); | |
373 | } | |
374 | ||
375 | static void enic_wq_free_buf(struct vnic_wq *wq, | |
376 | struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque) | |
377 | { | |
378 | enic_free_wq_buf(wq, buf); | |
379 | } | |
380 | ||
381 | static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, | |
382 | u8 type, u16 q_number, u16 completed_index, void *opaque) | |
383 | { | |
384 | struct enic *enic = vnic_dev_priv(vdev); | |
385 | ||
386 | spin_lock(&enic->wq_lock[q_number]); | |
387 | ||
388 | vnic_wq_service(&enic->wq[q_number], cq_desc, | |
389 | completed_index, enic_wq_free_buf, | |
390 | opaque); | |
391 | ||
392 | if (netif_queue_stopped(enic->netdev) && | |
ea0d7d91 SF |
393 | vnic_wq_desc_avail(&enic->wq[q_number]) >= |
394 | (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)) | |
01f2e4ea SF |
395 | netif_wake_queue(enic->netdev); |
396 | ||
397 | spin_unlock(&enic->wq_lock[q_number]); | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | static void enic_log_q_error(struct enic *enic) | |
403 | { | |
404 | unsigned int i; | |
405 | u32 error_status; | |
406 | ||
407 | for (i = 0; i < enic->wq_count; i++) { | |
408 | error_status = vnic_wq_error_status(&enic->wq[i]); | |
409 | if (error_status) | |
a7a79deb VK |
410 | netdev_err(enic->netdev, "WQ[%d] error_status %d\n", |
411 | i, error_status); | |
01f2e4ea SF |
412 | } |
413 | ||
414 | for (i = 0; i < enic->rq_count; i++) { | |
415 | error_status = vnic_rq_error_status(&enic->rq[i]); | |
416 | if (error_status) | |
a7a79deb VK |
417 | netdev_err(enic->netdev, "RQ[%d] error_status %d\n", |
418 | i, error_status); | |
01f2e4ea SF |
419 | } |
420 | } | |
421 | ||
383ab92f | 422 | static void enic_msglvl_check(struct enic *enic) |
01f2e4ea | 423 | { |
383ab92f | 424 | u32 msg_enable = vnic_dev_msg_lvl(enic->vdev); |
01f2e4ea | 425 | |
383ab92f | 426 | if (msg_enable != enic->msg_enable) { |
a7a79deb VK |
427 | netdev_info(enic->netdev, "msg lvl changed from 0x%x to 0x%x\n", |
428 | enic->msg_enable, msg_enable); | |
383ab92f | 429 | enic->msg_enable = msg_enable; |
01f2e4ea SF |
430 | } |
431 | } | |
432 | ||
433 | static void enic_mtu_check(struct enic *enic) | |
434 | { | |
435 | u32 mtu = vnic_dev_mtu(enic->vdev); | |
a7a79deb | 436 | struct net_device *netdev = enic->netdev; |
01f2e4ea | 437 | |
491598a4 | 438 | if (mtu && mtu != enic->port_mtu) { |
7c844599 | 439 | enic->port_mtu = mtu; |
c97c894d RP |
440 | if (enic_is_dynamic(enic)) { |
441 | mtu = max_t(int, ENIC_MIN_MTU, | |
442 | min_t(int, ENIC_MAX_MTU, mtu)); | |
443 | if (mtu != netdev->mtu) | |
444 | schedule_work(&enic->change_mtu_work); | |
445 | } else { | |
446 | if (mtu < netdev->mtu) | |
447 | netdev_warn(netdev, | |
448 | "interface MTU (%d) set higher " | |
449 | "than switch port MTU (%d)\n", | |
450 | netdev->mtu, mtu); | |
451 | } | |
01f2e4ea SF |
452 | } |
453 | } | |
454 | ||
383ab92f | 455 | static void enic_link_check(struct enic *enic) |
01f2e4ea | 456 | { |
383ab92f VK |
457 | int link_status = vnic_dev_link_status(enic->vdev); |
458 | int carrier_ok = netif_carrier_ok(enic->netdev); | |
01f2e4ea | 459 | |
383ab92f | 460 | if (link_status && !carrier_ok) { |
a7a79deb | 461 | netdev_info(enic->netdev, "Link UP\n"); |
383ab92f VK |
462 | netif_carrier_on(enic->netdev); |
463 | } else if (!link_status && carrier_ok) { | |
a7a79deb | 464 | netdev_info(enic->netdev, "Link DOWN\n"); |
383ab92f | 465 | netif_carrier_off(enic->netdev); |
01f2e4ea SF |
466 | } |
467 | } | |
468 | ||
469 | static void enic_notify_check(struct enic *enic) | |
470 | { | |
471 | enic_msglvl_check(enic); | |
472 | enic_mtu_check(enic); | |
473 | enic_link_check(enic); | |
474 | } | |
475 | ||
476 | #define ENIC_TEST_INTR(pba, i) (pba & (1 << i)) | |
477 | ||
478 | static irqreturn_t enic_isr_legacy(int irq, void *data) | |
479 | { | |
480 | struct net_device *netdev = data; | |
481 | struct enic *enic = netdev_priv(netdev); | |
717258ba VK |
482 | unsigned int io_intr = enic_legacy_io_intr(); |
483 | unsigned int err_intr = enic_legacy_err_intr(); | |
484 | unsigned int notify_intr = enic_legacy_notify_intr(); | |
01f2e4ea SF |
485 | u32 pba; |
486 | ||
717258ba | 487 | vnic_intr_mask(&enic->intr[io_intr]); |
01f2e4ea SF |
488 | |
489 | pba = vnic_intr_legacy_pba(enic->legacy_pba); | |
490 | if (!pba) { | |
717258ba | 491 | vnic_intr_unmask(&enic->intr[io_intr]); |
01f2e4ea SF |
492 | return IRQ_NONE; /* not our interrupt */ |
493 | } | |
494 | ||
717258ba VK |
495 | if (ENIC_TEST_INTR(pba, notify_intr)) { |
496 | vnic_intr_return_all_credits(&enic->intr[notify_intr]); | |
01f2e4ea | 497 | enic_notify_check(enic); |
ed8af6b2 | 498 | } |
01f2e4ea | 499 | |
717258ba VK |
500 | if (ENIC_TEST_INTR(pba, err_intr)) { |
501 | vnic_intr_return_all_credits(&enic->intr[err_intr]); | |
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 | ||
717258ba VK |
508 | if (ENIC_TEST_INTR(pba, io_intr)) { |
509 | if (napi_schedule_prep(&enic->napi[0])) | |
510 | __napi_schedule(&enic->napi[0]); | |
01f2e4ea | 511 | } else { |
717258ba | 512 | vnic_intr_unmask(&enic->intr[io_intr]); |
01f2e4ea SF |
513 | } |
514 | ||
515 | return IRQ_HANDLED; | |
516 | } | |
517 | ||
518 | static 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 | ||
717258ba | 538 | napi_schedule(&enic->napi[0]); |
01f2e4ea SF |
539 | |
540 | return IRQ_HANDLED; | |
541 | } | |
542 | ||
543 | static irqreturn_t enic_isr_msix_rq(int irq, void *data) | |
544 | { | |
717258ba | 545 | struct napi_struct *napi = data; |
01f2e4ea SF |
546 | |
547 | /* schedule NAPI polling for RQ cleanup */ | |
717258ba | 548 | napi_schedule(napi); |
01f2e4ea SF |
549 | |
550 | return IRQ_HANDLED; | |
551 | } | |
552 | ||
553 | static irqreturn_t enic_isr_msix_wq(int irq, void *data) | |
554 | { | |
555 | struct enic *enic = data; | |
717258ba VK |
556 | unsigned int cq = enic_cq_wq(enic, 0); |
557 | unsigned int intr = enic_msix_wq_intr(enic, 0); | |
01f2e4ea SF |
558 | unsigned int wq_work_to_do = -1; /* no limit */ |
559 | unsigned int wq_work_done; | |
560 | ||
717258ba | 561 | wq_work_done = vnic_cq_service(&enic->cq[cq], |
01f2e4ea SF |
562 | wq_work_to_do, enic_wq_service, NULL); |
563 | ||
717258ba | 564 | vnic_intr_return_credits(&enic->intr[intr], |
01f2e4ea SF |
565 | wq_work_done, |
566 | 1 /* unmask intr */, | |
567 | 1 /* reset intr timer */); | |
568 | ||
569 | return IRQ_HANDLED; | |
570 | } | |
571 | ||
572 | static irqreturn_t enic_isr_msix_err(int irq, void *data) | |
573 | { | |
574 | struct enic *enic = data; | |
717258ba | 575 | unsigned int intr = enic_msix_err_intr(enic); |
01f2e4ea | 576 | |
717258ba | 577 | vnic_intr_return_all_credits(&enic->intr[intr]); |
ed8af6b2 | 578 | |
01f2e4ea SF |
579 | enic_log_q_error(enic); |
580 | ||
581 | /* schedule recovery from WQ/RQ error */ | |
582 | schedule_work(&enic->reset); | |
583 | ||
584 | return IRQ_HANDLED; | |
585 | } | |
586 | ||
587 | static irqreturn_t enic_isr_msix_notify(int irq, void *data) | |
588 | { | |
589 | struct enic *enic = data; | |
717258ba | 590 | unsigned int intr = enic_msix_notify_intr(enic); |
01f2e4ea | 591 | |
717258ba | 592 | vnic_intr_return_all_credits(&enic->intr[intr]); |
01f2e4ea | 593 | enic_notify_check(enic); |
01f2e4ea SF |
594 | |
595 | return IRQ_HANDLED; | |
596 | } | |
597 | ||
598 | static inline void enic_queue_wq_skb_cont(struct enic *enic, | |
599 | struct vnic_wq *wq, struct sk_buff *skb, | |
1825aca6 | 600 | unsigned int len_left, int loopback) |
01f2e4ea SF |
601 | { |
602 | skb_frag_t *frag; | |
603 | ||
604 | /* Queue additional data fragments */ | |
605 | for (frag = skb_shinfo(skb)->frags; len_left; frag++) { | |
606 | len_left -= frag->size; | |
607 | enic_queue_wq_desc_cont(wq, skb, | |
4bf5adbf IC |
608 | skb_frag_dma_map(&enic->pdev->dev, |
609 | frag, 0, frag->size, | |
5d6bcdfe | 610 | DMA_TO_DEVICE), |
01f2e4ea | 611 | frag->size, |
1825aca6 VK |
612 | (len_left == 0), /* EOP? */ |
613 | loopback); | |
01f2e4ea SF |
614 | } |
615 | } | |
616 | ||
617 | static inline void enic_queue_wq_skb_vlan(struct enic *enic, | |
618 | struct vnic_wq *wq, struct sk_buff *skb, | |
1825aca6 | 619 | int vlan_tag_insert, unsigned int vlan_tag, int loopback) |
01f2e4ea SF |
620 | { |
621 | unsigned int head_len = skb_headlen(skb); | |
622 | unsigned int len_left = skb->len - head_len; | |
623 | int eop = (len_left == 0); | |
624 | ||
ea0d7d91 SF |
625 | /* Queue the main skb fragment. The fragments are no larger |
626 | * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less | |
627 | * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor | |
628 | * per fragment is queued. | |
629 | */ | |
01f2e4ea SF |
630 | enic_queue_wq_desc(wq, skb, |
631 | pci_map_single(enic->pdev, skb->data, | |
632 | head_len, PCI_DMA_TODEVICE), | |
633 | head_len, | |
634 | vlan_tag_insert, vlan_tag, | |
1825aca6 | 635 | eop, loopback); |
01f2e4ea SF |
636 | |
637 | if (!eop) | |
1825aca6 | 638 | enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); |
01f2e4ea SF |
639 | } |
640 | ||
641 | static inline void enic_queue_wq_skb_csum_l4(struct enic *enic, | |
642 | struct vnic_wq *wq, struct sk_buff *skb, | |
1825aca6 | 643 | int vlan_tag_insert, unsigned int vlan_tag, int loopback) |
01f2e4ea SF |
644 | { |
645 | unsigned int head_len = skb_headlen(skb); | |
646 | unsigned int len_left = skb->len - head_len; | |
0d0b1672 | 647 | unsigned int hdr_len = skb_checksum_start_offset(skb); |
01f2e4ea SF |
648 | unsigned int csum_offset = hdr_len + skb->csum_offset; |
649 | int eop = (len_left == 0); | |
650 | ||
ea0d7d91 SF |
651 | /* Queue the main skb fragment. The fragments are no larger |
652 | * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less | |
653 | * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor | |
654 | * per fragment is queued. | |
655 | */ | |
01f2e4ea SF |
656 | enic_queue_wq_desc_csum_l4(wq, skb, |
657 | pci_map_single(enic->pdev, skb->data, | |
658 | head_len, PCI_DMA_TODEVICE), | |
659 | head_len, | |
660 | csum_offset, | |
661 | hdr_len, | |
662 | vlan_tag_insert, vlan_tag, | |
1825aca6 | 663 | eop, loopback); |
01f2e4ea SF |
664 | |
665 | if (!eop) | |
1825aca6 | 666 | enic_queue_wq_skb_cont(enic, wq, skb, len_left, loopback); |
01f2e4ea SF |
667 | } |
668 | ||
669 | static inline void enic_queue_wq_skb_tso(struct enic *enic, | |
670 | struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss, | |
1825aca6 | 671 | int vlan_tag_insert, unsigned int vlan_tag, int loopback) |
01f2e4ea | 672 | { |
ea0d7d91 SF |
673 | unsigned int frag_len_left = skb_headlen(skb); |
674 | unsigned int len_left = skb->len - frag_len_left; | |
01f2e4ea SF |
675 | unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
676 | int eop = (len_left == 0); | |
ea0d7d91 SF |
677 | unsigned int len; |
678 | dma_addr_t dma_addr; | |
679 | unsigned int offset = 0; | |
680 | skb_frag_t *frag; | |
01f2e4ea SF |
681 | |
682 | /* Preload TCP csum field with IP pseudo hdr calculated | |
683 | * with IP length set to zero. HW will later add in length | |
684 | * to each TCP segment resulting from the TSO. | |
685 | */ | |
686 | ||
09640e63 | 687 | if (skb->protocol == cpu_to_be16(ETH_P_IP)) { |
01f2e4ea SF |
688 | ip_hdr(skb)->check = 0; |
689 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr, | |
690 | ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); | |
09640e63 | 691 | } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) { |
01f2e4ea SF |
692 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
693 | &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); | |
694 | } | |
695 | ||
ea0d7d91 SF |
696 | /* Queue WQ_ENET_MAX_DESC_LEN length descriptors |
697 | * for the main skb fragment | |
698 | */ | |
699 | while (frag_len_left) { | |
700 | len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN); | |
701 | dma_addr = pci_map_single(enic->pdev, skb->data + offset, | |
702 | len, PCI_DMA_TODEVICE); | |
703 | enic_queue_wq_desc_tso(wq, skb, | |
704 | dma_addr, | |
705 | len, | |
706 | mss, hdr_len, | |
707 | vlan_tag_insert, vlan_tag, | |
1825aca6 | 708 | eop && (len == frag_len_left), loopback); |
ea0d7d91 SF |
709 | frag_len_left -= len; |
710 | offset += len; | |
711 | } | |
01f2e4ea | 712 | |
ea0d7d91 SF |
713 | if (eop) |
714 | return; | |
715 | ||
716 | /* Queue WQ_ENET_MAX_DESC_LEN length descriptors | |
717 | * for additional data fragments | |
718 | */ | |
719 | for (frag = skb_shinfo(skb)->frags; len_left; frag++) { | |
720 | len_left -= frag->size; | |
721 | frag_len_left = frag->size; | |
4bf5adbf | 722 | offset = 0; |
ea0d7d91 SF |
723 | |
724 | while (frag_len_left) { | |
725 | len = min(frag_len_left, | |
726 | (unsigned int)WQ_ENET_MAX_DESC_LEN); | |
4bf5adbf IC |
727 | dma_addr = skb_frag_dma_map(&enic->pdev->dev, frag, |
728 | offset, len, | |
5d6bcdfe | 729 | DMA_TO_DEVICE); |
ea0d7d91 SF |
730 | enic_queue_wq_desc_cont(wq, skb, |
731 | dma_addr, | |
732 | len, | |
733 | (len_left == 0) && | |
1825aca6 VK |
734 | (len == frag_len_left), /* EOP? */ |
735 | loopback); | |
ea0d7d91 SF |
736 | frag_len_left -= len; |
737 | offset += len; | |
738 | } | |
739 | } | |
01f2e4ea SF |
740 | } |
741 | ||
742 | static inline void enic_queue_wq_skb(struct enic *enic, | |
743 | struct vnic_wq *wq, struct sk_buff *skb) | |
744 | { | |
745 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
746 | unsigned int vlan_tag = 0; | |
747 | int vlan_tag_insert = 0; | |
1825aca6 | 748 | int loopback = 0; |
01f2e4ea | 749 | |
eab6d18d | 750 | if (vlan_tx_tag_present(skb)) { |
01f2e4ea SF |
751 | /* VLAN tag from trunking driver */ |
752 | vlan_tag_insert = 1; | |
753 | vlan_tag = vlan_tx_tag_get(skb); | |
1825aca6 VK |
754 | } else if (enic->loop_enable) { |
755 | vlan_tag = enic->loop_tag; | |
756 | loopback = 1; | |
01f2e4ea SF |
757 | } |
758 | ||
759 | if (mss) | |
760 | enic_queue_wq_skb_tso(enic, wq, skb, mss, | |
1825aca6 | 761 | vlan_tag_insert, vlan_tag, loopback); |
01f2e4ea SF |
762 | else if (skb->ip_summed == CHECKSUM_PARTIAL) |
763 | enic_queue_wq_skb_csum_l4(enic, wq, skb, | |
1825aca6 | 764 | vlan_tag_insert, vlan_tag, loopback); |
01f2e4ea SF |
765 | else |
766 | enic_queue_wq_skb_vlan(enic, wq, skb, | |
1825aca6 | 767 | vlan_tag_insert, vlan_tag, loopback); |
01f2e4ea SF |
768 | } |
769 | ||
ed8af6b2 | 770 | /* netif_tx_lock held, process context with BHs disabled, or BH */ |
61357325 | 771 | static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb, |
d87fd25d | 772 | struct net_device *netdev) |
01f2e4ea SF |
773 | { |
774 | struct enic *enic = netdev_priv(netdev); | |
775 | struct vnic_wq *wq = &enic->wq[0]; | |
776 | unsigned long flags; | |
777 | ||
778 | if (skb->len <= 0) { | |
779 | dev_kfree_skb(skb); | |
780 | return NETDEV_TX_OK; | |
781 | } | |
782 | ||
783 | /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs, | |
784 | * which is very likely. In the off chance it's going to take | |
785 | * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb. | |
786 | */ | |
787 | ||
788 | if (skb_shinfo(skb)->gso_size == 0 && | |
789 | skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC && | |
790 | skb_linearize(skb)) { | |
791 | dev_kfree_skb(skb); | |
792 | return NETDEV_TX_OK; | |
793 | } | |
794 | ||
795 | spin_lock_irqsave(&enic->wq_lock[0], flags); | |
796 | ||
ea0d7d91 SF |
797 | if (vnic_wq_desc_avail(wq) < |
798 | skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) { | |
01f2e4ea SF |
799 | netif_stop_queue(netdev); |
800 | /* This is a hard error, log it */ | |
a7a79deb | 801 | netdev_err(netdev, "BUG! Tx ring full when queue awake!\n"); |
01f2e4ea SF |
802 | spin_unlock_irqrestore(&enic->wq_lock[0], flags); |
803 | return NETDEV_TX_BUSY; | |
804 | } | |
805 | ||
806 | enic_queue_wq_skb(enic, wq, skb); | |
807 | ||
ea0d7d91 | 808 | if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS) |
01f2e4ea SF |
809 | netif_stop_queue(netdev); |
810 | ||
01f2e4ea SF |
811 | spin_unlock_irqrestore(&enic->wq_lock[0], flags); |
812 | ||
813 | return NETDEV_TX_OK; | |
814 | } | |
815 | ||
816 | /* dev_base_lock rwlock held, nominally process context */ | |
f20530bc | 817 | static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev, |
818 | struct rtnl_link_stats64 *net_stats) | |
01f2e4ea SF |
819 | { |
820 | struct enic *enic = netdev_priv(netdev); | |
821 | struct vnic_stats *stats; | |
822 | ||
383ab92f | 823 | enic_dev_stats_dump(enic, &stats); |
01f2e4ea | 824 | |
25f0a061 SF |
825 | net_stats->tx_packets = stats->tx.tx_frames_ok; |
826 | net_stats->tx_bytes = stats->tx.tx_bytes_ok; | |
827 | net_stats->tx_errors = stats->tx.tx_errors; | |
828 | net_stats->tx_dropped = stats->tx.tx_drops; | |
01f2e4ea | 829 | |
25f0a061 SF |
830 | net_stats->rx_packets = stats->rx.rx_frames_ok; |
831 | net_stats->rx_bytes = stats->rx.rx_bytes_ok; | |
832 | net_stats->rx_errors = stats->rx.rx_errors; | |
833 | net_stats->multicast = stats->rx.rx_multicast_frames_ok; | |
350991e1 | 834 | net_stats->rx_over_errors = enic->rq_truncated_pkts; |
bd9fb1a4 | 835 | net_stats->rx_crc_errors = enic->rq_bad_fcs; |
350991e1 | 836 | net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop; |
01f2e4ea | 837 | |
25f0a061 | 838 | return net_stats; |
01f2e4ea SF |
839 | } |
840 | ||
b3abfbd2 | 841 | void enic_reset_addr_lists(struct enic *enic) |
01f2e4ea SF |
842 | { |
843 | enic->mc_count = 0; | |
e0afe53f | 844 | enic->uc_count = 0; |
99ef5639 | 845 | enic->flags = 0; |
01f2e4ea SF |
846 | } |
847 | ||
848 | static int enic_set_mac_addr(struct net_device *netdev, char *addr) | |
849 | { | |
f8bd9091 SF |
850 | struct enic *enic = netdev_priv(netdev); |
851 | ||
852 | if (enic_is_dynamic(enic)) { | |
853 | if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr)) | |
854 | return -EADDRNOTAVAIL; | |
855 | } else { | |
856 | if (!is_valid_ether_addr(addr)) | |
857 | return -EADDRNOTAVAIL; | |
858 | } | |
01f2e4ea SF |
859 | |
860 | memcpy(netdev->dev_addr, addr, netdev->addr_len); | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
f8bd9091 SF |
865 | static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p) |
866 | { | |
867 | struct enic *enic = netdev_priv(netdev); | |
868 | struct sockaddr *saddr = p; | |
869 | char *addr = saddr->sa_data; | |
870 | int err; | |
871 | ||
872 | if (netif_running(enic->netdev)) { | |
873 | err = enic_dev_del_station_addr(enic); | |
874 | if (err) | |
875 | return err; | |
876 | } | |
877 | ||
878 | err = enic_set_mac_addr(netdev, addr); | |
879 | if (err) | |
880 | return err; | |
881 | ||
882 | if (netif_running(enic->netdev)) { | |
883 | err = enic_dev_add_station_addr(enic); | |
884 | if (err) | |
885 | return err; | |
886 | } | |
887 | ||
888 | return err; | |
889 | } | |
890 | ||
891 | static int enic_set_mac_address(struct net_device *netdev, void *p) | |
892 | { | |
294dab25 | 893 | struct sockaddr *saddr = p; |
c76fd32d VK |
894 | char *addr = saddr->sa_data; |
895 | struct enic *enic = netdev_priv(netdev); | |
896 | int err; | |
897 | ||
898 | err = enic_dev_del_station_addr(enic); | |
899 | if (err) | |
900 | return err; | |
901 | ||
902 | err = enic_set_mac_addr(netdev, addr); | |
903 | if (err) | |
904 | return err; | |
294dab25 | 905 | |
c76fd32d | 906 | return enic_dev_add_station_addr(enic); |
f8bd9091 SF |
907 | } |
908 | ||
e0afe53f | 909 | static void enic_update_multicast_addr_list(struct enic *enic) |
01f2e4ea | 910 | { |
319d7e84 | 911 | struct net_device *netdev = enic->netdev; |
22bedad3 | 912 | struct netdev_hw_addr *ha; |
4cd24eaf | 913 | unsigned int mc_count = netdev_mc_count(netdev); |
01f2e4ea | 914 | u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN]; |
01f2e4ea SF |
915 | unsigned int i, j; |
916 | ||
319d7e84 RP |
917 | if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS) { |
918 | netdev_warn(netdev, "Registering only %d out of %d " | |
919 | "multicast addresses\n", | |
920 | ENIC_MULTICAST_PERFECT_FILTERS, mc_count); | |
01f2e4ea | 921 | mc_count = ENIC_MULTICAST_PERFECT_FILTERS; |
9959a185 | 922 | } |
01f2e4ea SF |
923 | |
924 | /* Is there an easier way? Trying to minimize to | |
925 | * calls to add/del multicast addrs. We keep the | |
926 | * addrs from the last call in enic->mc_addr and | |
927 | * look for changes to add/del. | |
928 | */ | |
929 | ||
48e2f183 | 930 | i = 0; |
22bedad3 | 931 | netdev_for_each_mc_addr(ha, netdev) { |
48e2f183 JP |
932 | if (i == mc_count) |
933 | break; | |
22bedad3 | 934 | memcpy(mc_addr[i++], ha->addr, ETH_ALEN); |
01f2e4ea SF |
935 | } |
936 | ||
937 | for (i = 0; i < enic->mc_count; i++) { | |
938 | for (j = 0; j < mc_count; j++) | |
939 | if (compare_ether_addr(enic->mc_addr[i], | |
940 | mc_addr[j]) == 0) | |
941 | break; | |
942 | if (j == mc_count) | |
319d7e84 | 943 | enic_dev_del_addr(enic, enic->mc_addr[i]); |
01f2e4ea SF |
944 | } |
945 | ||
946 | for (i = 0; i < mc_count; i++) { | |
947 | for (j = 0; j < enic->mc_count; j++) | |
948 | if (compare_ether_addr(mc_addr[i], | |
949 | enic->mc_addr[j]) == 0) | |
950 | break; | |
951 | if (j == enic->mc_count) | |
319d7e84 | 952 | enic_dev_add_addr(enic, mc_addr[i]); |
01f2e4ea SF |
953 | } |
954 | ||
955 | /* Save the list to compare against next time | |
956 | */ | |
957 | ||
958 | for (i = 0; i < mc_count; i++) | |
959 | memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN); | |
960 | ||
961 | enic->mc_count = mc_count; | |
01f2e4ea SF |
962 | } |
963 | ||
e0afe53f | 964 | static void enic_update_unicast_addr_list(struct enic *enic) |
319d7e84 RP |
965 | { |
966 | struct net_device *netdev = enic->netdev; | |
967 | struct netdev_hw_addr *ha; | |
968 | unsigned int uc_count = netdev_uc_count(netdev); | |
969 | u8 uc_addr[ENIC_UNICAST_PERFECT_FILTERS][ETH_ALEN]; | |
970 | unsigned int i, j; | |
971 | ||
972 | if (uc_count > ENIC_UNICAST_PERFECT_FILTERS) { | |
973 | netdev_warn(netdev, "Registering only %d out of %d " | |
974 | "unicast addresses\n", | |
975 | ENIC_UNICAST_PERFECT_FILTERS, uc_count); | |
976 | uc_count = ENIC_UNICAST_PERFECT_FILTERS; | |
977 | } | |
978 | ||
979 | /* Is there an easier way? Trying to minimize to | |
980 | * calls to add/del unicast addrs. We keep the | |
981 | * addrs from the last call in enic->uc_addr and | |
982 | * look for changes to add/del. | |
983 | */ | |
984 | ||
985 | i = 0; | |
986 | netdev_for_each_uc_addr(ha, netdev) { | |
987 | if (i == uc_count) | |
988 | break; | |
989 | memcpy(uc_addr[i++], ha->addr, ETH_ALEN); | |
990 | } | |
991 | ||
992 | for (i = 0; i < enic->uc_count; i++) { | |
993 | for (j = 0; j < uc_count; j++) | |
994 | if (compare_ether_addr(enic->uc_addr[i], | |
995 | uc_addr[j]) == 0) | |
996 | break; | |
997 | if (j == uc_count) | |
998 | enic_dev_del_addr(enic, enic->uc_addr[i]); | |
999 | } | |
1000 | ||
1001 | for (i = 0; i < uc_count; i++) { | |
1002 | for (j = 0; j < enic->uc_count; j++) | |
1003 | if (compare_ether_addr(uc_addr[i], | |
1004 | enic->uc_addr[j]) == 0) | |
1005 | break; | |
1006 | if (j == enic->uc_count) | |
1007 | enic_dev_add_addr(enic, uc_addr[i]); | |
1008 | } | |
1009 | ||
1010 | /* Save the list to compare against next time | |
1011 | */ | |
1012 | ||
1013 | for (i = 0; i < uc_count; i++) | |
1014 | memcpy(enic->uc_addr[i], uc_addr[i], ETH_ALEN); | |
1015 | ||
1016 | enic->uc_count = uc_count; | |
1017 | } | |
1018 | ||
1019 | /* netif_tx_lock held, BHs disabled */ | |
1020 | static void enic_set_rx_mode(struct net_device *netdev) | |
1021 | { | |
1022 | struct enic *enic = netdev_priv(netdev); | |
1023 | int directed = 1; | |
1024 | int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0; | |
1025 | int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0; | |
1026 | int promisc = (netdev->flags & IFF_PROMISC) || | |
1027 | netdev_uc_count(netdev) > ENIC_UNICAST_PERFECT_FILTERS; | |
1028 | int allmulti = (netdev->flags & IFF_ALLMULTI) || | |
1029 | netdev_mc_count(netdev) > ENIC_MULTICAST_PERFECT_FILTERS; | |
1030 | unsigned int flags = netdev->flags | | |
1031 | (allmulti ? IFF_ALLMULTI : 0) | | |
1032 | (promisc ? IFF_PROMISC : 0); | |
1033 | ||
1034 | if (enic->flags != flags) { | |
1035 | enic->flags = flags; | |
1036 | enic_dev_packet_filter(enic, directed, | |
1037 | multicast, broadcast, promisc, allmulti); | |
1038 | } | |
1039 | ||
1040 | if (!promisc) { | |
e0afe53f | 1041 | enic_update_unicast_addr_list(enic); |
319d7e84 | 1042 | if (!allmulti) |
e0afe53f | 1043 | enic_update_multicast_addr_list(enic); |
319d7e84 RP |
1044 | } |
1045 | } | |
1046 | ||
01f2e4ea SF |
1047 | /* netif_tx_lock held, BHs disabled */ |
1048 | static void enic_tx_timeout(struct net_device *netdev) | |
1049 | { | |
1050 | struct enic *enic = netdev_priv(netdev); | |
1051 | schedule_work(&enic->reset); | |
1052 | } | |
1053 | ||
0b1c00fc RP |
1054 | static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
1055 | { | |
1056 | struct enic *enic = netdev_priv(netdev); | |
3f192795 RP |
1057 | struct enic_port_profile *pp; |
1058 | int err; | |
0b1c00fc | 1059 | |
3f192795 RP |
1060 | ENIC_PP_BY_INDEX(enic, vf, pp, &err); |
1061 | if (err) | |
1062 | return err; | |
0b1c00fc | 1063 | |
0b1c00fc | 1064 | if (is_valid_ether_addr(mac)) { |
3f192795 | 1065 | memcpy(pp->vf_mac, mac, ETH_ALEN); |
0b1c00fc RP |
1066 | return 0; |
1067 | } else | |
1068 | return -EINVAL; | |
1069 | } | |
1070 | ||
f8bd9091 SF |
1071 | static int enic_set_vf_port(struct net_device *netdev, int vf, |
1072 | struct nlattr *port[]) | |
1073 | { | |
1074 | struct enic *enic = netdev_priv(netdev); | |
b3abfbd2 | 1075 | struct enic_port_profile prev_pp; |
3f192795 | 1076 | struct enic_port_profile *pp; |
b3abfbd2 | 1077 | int err = 0, restore_pp = 1; |
08f382eb | 1078 | |
3f192795 RP |
1079 | ENIC_PP_BY_INDEX(enic, vf, pp, &err); |
1080 | if (err) | |
1081 | return err; | |
08f382eb | 1082 | |
b3abfbd2 RP |
1083 | if (!port[IFLA_PORT_REQUEST]) |
1084 | return -EOPNOTSUPP; | |
1085 | ||
3f192795 RP |
1086 | memcpy(&prev_pp, pp, sizeof(*enic->pp)); |
1087 | memset(pp, 0, sizeof(*enic->pp)); | |
b3abfbd2 | 1088 | |
3f192795 RP |
1089 | pp->set |= ENIC_SET_REQUEST; |
1090 | pp->request = nla_get_u8(port[IFLA_PORT_REQUEST]); | |
08f382eb SF |
1091 | |
1092 | if (port[IFLA_PORT_PROFILE]) { | |
3f192795 RP |
1093 | pp->set |= ENIC_SET_NAME; |
1094 | memcpy(pp->name, nla_data(port[IFLA_PORT_PROFILE]), | |
08f382eb SF |
1095 | PORT_PROFILE_MAX); |
1096 | } | |
1097 | ||
1098 | if (port[IFLA_PORT_INSTANCE_UUID]) { | |
3f192795 RP |
1099 | pp->set |= ENIC_SET_INSTANCE; |
1100 | memcpy(pp->instance_uuid, | |
08f382eb SF |
1101 | nla_data(port[IFLA_PORT_INSTANCE_UUID]), PORT_UUID_MAX); |
1102 | } | |
1103 | ||
1104 | if (port[IFLA_PORT_HOST_UUID]) { | |
3f192795 RP |
1105 | pp->set |= ENIC_SET_HOST; |
1106 | memcpy(pp->host_uuid, | |
08f382eb SF |
1107 | nla_data(port[IFLA_PORT_HOST_UUID]), PORT_UUID_MAX); |
1108 | } | |
f8bd9091 | 1109 | |
b3abfbd2 RP |
1110 | /* Special case handling: mac came from IFLA_VF_MAC */ |
1111 | if (!is_zero_ether_addr(prev_pp.vf_mac)) | |
3f192795 | 1112 | memcpy(pp->mac_addr, prev_pp.vf_mac, ETH_ALEN); |
418c437d | 1113 | |
3f192795 RP |
1114 | if (vf == PORT_SELF_VF && is_zero_ether_addr(netdev->dev_addr)) |
1115 | random_ether_addr(netdev->dev_addr); | |
f8bd9091 | 1116 | |
3f192795 | 1117 | err = enic_process_set_pp_request(enic, vf, &prev_pp, &restore_pp); |
b3abfbd2 RP |
1118 | if (err) { |
1119 | if (restore_pp) { | |
1120 | /* Things are still the way they were: Implicit | |
1121 | * DISASSOCIATE failed | |
1122 | */ | |
3f192795 | 1123 | memcpy(pp, &prev_pp, sizeof(*pp)); |
b3abfbd2 | 1124 | } else { |
3f192795 RP |
1125 | memset(pp, 0, sizeof(*pp)); |
1126 | if (vf == PORT_SELF_VF) | |
1127 | memset(netdev->dev_addr, 0, ETH_ALEN); | |
b3abfbd2 RP |
1128 | } |
1129 | } else { | |
1130 | /* Set flag to indicate that the port assoc/disassoc | |
1131 | * request has been sent out to fw | |
1132 | */ | |
3f192795 | 1133 | pp->set |= ENIC_PORT_REQUEST_APPLIED; |
b3abfbd2 RP |
1134 | |
1135 | /* If DISASSOCIATE, clean up all assigned/saved macaddresses */ | |
3f192795 RP |
1136 | if (pp->request == PORT_REQUEST_DISASSOCIATE) { |
1137 | memset(pp->mac_addr, 0, ETH_ALEN); | |
1138 | if (vf == PORT_SELF_VF) | |
1139 | memset(netdev->dev_addr, 0, ETH_ALEN); | |
b3abfbd2 RP |
1140 | } |
1141 | } | |
29639059 | 1142 | |
3f192795 | 1143 | memset(pp->vf_mac, 0, ETH_ALEN); |
29639059 | 1144 | |
29639059 | 1145 | return err; |
f8bd9091 SF |
1146 | } |
1147 | ||
1148 | static int enic_get_vf_port(struct net_device *netdev, int vf, | |
1149 | struct sk_buff *skb) | |
1150 | { | |
1151 | struct enic *enic = netdev_priv(netdev); | |
f8bd9091 | 1152 | u16 response = PORT_PROFILE_RESPONSE_SUCCESS; |
3f192795 | 1153 | struct enic_port_profile *pp; |
b3abfbd2 | 1154 | int err; |
f8bd9091 | 1155 | |
3f192795 RP |
1156 | ENIC_PP_BY_INDEX(enic, vf, pp, &err); |
1157 | if (err) | |
1158 | return err; | |
1159 | ||
1160 | if (!(pp->set & ENIC_PORT_REQUEST_APPLIED)) | |
08f382eb | 1161 | return -ENODATA; |
f8bd9091 | 1162 | |
3f192795 | 1163 | err = enic_process_get_pp_request(enic, vf, pp->request, &response); |
f8bd9091 | 1164 | if (err) |
b3abfbd2 | 1165 | return err; |
f8bd9091 | 1166 | |
3f192795 | 1167 | NLA_PUT_U16(skb, IFLA_PORT_REQUEST, pp->request); |
f8bd9091 | 1168 | NLA_PUT_U16(skb, IFLA_PORT_RESPONSE, response); |
3f192795 | 1169 | if (pp->set & ENIC_SET_NAME) |
08f382eb | 1170 | NLA_PUT(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX, |
3f192795 RP |
1171 | pp->name); |
1172 | if (pp->set & ENIC_SET_INSTANCE) | |
08f382eb | 1173 | NLA_PUT(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX, |
3f192795 RP |
1174 | pp->instance_uuid); |
1175 | if (pp->set & ENIC_SET_HOST) | |
08f382eb | 1176 | NLA_PUT(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX, |
3f192795 | 1177 | pp->host_uuid); |
f8bd9091 SF |
1178 | |
1179 | return 0; | |
1180 | ||
1181 | nla_put_failure: | |
1182 | return -EMSGSIZE; | |
1183 | } | |
1184 | ||
01f2e4ea SF |
1185 | static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf) |
1186 | { | |
1187 | struct enic *enic = vnic_dev_priv(rq->vdev); | |
1188 | ||
1189 | if (!buf->os_buf) | |
1190 | return; | |
1191 | ||
1192 | pci_unmap_single(enic->pdev, buf->dma_addr, | |
1193 | buf->len, PCI_DMA_FROMDEVICE); | |
1194 | dev_kfree_skb_any(buf->os_buf); | |
1195 | } | |
1196 | ||
01f2e4ea SF |
1197 | static int enic_rq_alloc_buf(struct vnic_rq *rq) |
1198 | { | |
1199 | struct enic *enic = vnic_dev_priv(rq->vdev); | |
d19e22dc | 1200 | struct net_device *netdev = enic->netdev; |
01f2e4ea | 1201 | struct sk_buff *skb; |
1825aca6 | 1202 | unsigned int len = netdev->mtu + VLAN_ETH_HLEN; |
01f2e4ea SF |
1203 | unsigned int os_buf_index = 0; |
1204 | dma_addr_t dma_addr; | |
1205 | ||
89d71a66 | 1206 | skb = netdev_alloc_skb_ip_align(netdev, len); |
01f2e4ea SF |
1207 | if (!skb) |
1208 | return -ENOMEM; | |
1209 | ||
1210 | dma_addr = pci_map_single(enic->pdev, skb->data, | |
1211 | len, PCI_DMA_FROMDEVICE); | |
1212 | ||
1213 | enic_queue_rq_desc(rq, skb, os_buf_index, | |
1214 | dma_addr, len); | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
01f2e4ea SF |
1219 | static void enic_rq_indicate_buf(struct vnic_rq *rq, |
1220 | struct cq_desc *cq_desc, struct vnic_rq_buf *buf, | |
1221 | int skipped, void *opaque) | |
1222 | { | |
1223 | struct enic *enic = vnic_dev_priv(rq->vdev); | |
86ca9db7 | 1224 | struct net_device *netdev = enic->netdev; |
01f2e4ea SF |
1225 | struct sk_buff *skb; |
1226 | ||
1227 | u8 type, color, eop, sop, ingress_port, vlan_stripped; | |
1228 | u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof; | |
1229 | u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok; | |
1230 | u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc; | |
1231 | u8 packet_error; | |
f8cac14a | 1232 | u16 q_number, completed_index, bytes_written, vlan_tci, checksum; |
01f2e4ea SF |
1233 | u32 rss_hash; |
1234 | ||
1235 | if (skipped) | |
1236 | return; | |
1237 | ||
1238 | skb = buf->os_buf; | |
1239 | prefetch(skb->data - NET_IP_ALIGN); | |
1240 | pci_unmap_single(enic->pdev, buf->dma_addr, | |
1241 | buf->len, PCI_DMA_FROMDEVICE); | |
1242 | ||
1243 | cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc, | |
1244 | &type, &color, &q_number, &completed_index, | |
1245 | &ingress_port, &fcoe, &eop, &sop, &rss_type, | |
1246 | &csum_not_calc, &rss_hash, &bytes_written, | |
f8cac14a | 1247 | &packet_error, &vlan_stripped, &vlan_tci, &checksum, |
01f2e4ea SF |
1248 | &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error, |
1249 | &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp, | |
1250 | &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment, | |
1251 | &fcs_ok); | |
1252 | ||
1253 | if (packet_error) { | |
1254 | ||
350991e1 SF |
1255 | if (!fcs_ok) { |
1256 | if (bytes_written > 0) | |
1257 | enic->rq_bad_fcs++; | |
1258 | else if (bytes_written == 0) | |
1259 | enic->rq_truncated_pkts++; | |
1260 | } | |
01f2e4ea SF |
1261 | |
1262 | dev_kfree_skb_any(skb); | |
1263 | ||
1264 | return; | |
1265 | } | |
1266 | ||
1267 | if (eop && bytes_written > 0) { | |
1268 | ||
1269 | /* Good receive | |
1270 | */ | |
1271 | ||
1272 | skb_put(skb, bytes_written); | |
86ca9db7 | 1273 | skb->protocol = eth_type_trans(skb, netdev); |
01f2e4ea | 1274 | |
5ec8f9b8 | 1275 | if ((netdev->features & NETIF_F_RXCSUM) && !csum_not_calc) { |
01f2e4ea SF |
1276 | skb->csum = htons(checksum); |
1277 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1278 | } | |
1279 | ||
86ca9db7 | 1280 | skb->dev = netdev; |
01f2e4ea | 1281 | |
6ede746b JP |
1282 | if (vlan_stripped) |
1283 | __vlan_hwaccel_put_tag(skb, vlan_tci); | |
01f2e4ea | 1284 | |
6ede746b JP |
1285 | if (netdev->features & NETIF_F_GRO) |
1286 | napi_gro_receive(&enic->napi[q_number], skb); | |
1287 | else | |
1288 | netif_receive_skb(skb); | |
01f2e4ea SF |
1289 | } else { |
1290 | ||
1291 | /* Buffer overflow | |
1292 | */ | |
1293 | ||
1294 | dev_kfree_skb_any(skb); | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc, | |
1299 | u8 type, u16 q_number, u16 completed_index, void *opaque) | |
1300 | { | |
1301 | struct enic *enic = vnic_dev_priv(vdev); | |
1302 | ||
1303 | vnic_rq_service(&enic->rq[q_number], cq_desc, | |
1304 | completed_index, VNIC_RQ_RETURN_DESC, | |
1305 | enic_rq_indicate_buf, opaque); | |
1306 | ||
1307 | return 0; | |
1308 | } | |
1309 | ||
01f2e4ea SF |
1310 | static int enic_poll(struct napi_struct *napi, int budget) |
1311 | { | |
717258ba VK |
1312 | struct net_device *netdev = napi->dev; |
1313 | struct enic *enic = netdev_priv(netdev); | |
1314 | unsigned int cq_rq = enic_cq_rq(enic, 0); | |
1315 | unsigned int cq_wq = enic_cq_wq(enic, 0); | |
1316 | unsigned int intr = enic_legacy_io_intr(); | |
01f2e4ea SF |
1317 | unsigned int rq_work_to_do = budget; |
1318 | unsigned int wq_work_to_do = -1; /* no limit */ | |
1319 | unsigned int work_done, rq_work_done, wq_work_done; | |
2d6ddced | 1320 | int err; |
01f2e4ea SF |
1321 | |
1322 | /* Service RQ (first) and WQ | |
1323 | */ | |
1324 | ||
717258ba | 1325 | rq_work_done = vnic_cq_service(&enic->cq[cq_rq], |
01f2e4ea SF |
1326 | rq_work_to_do, enic_rq_service, NULL); |
1327 | ||
717258ba | 1328 | wq_work_done = vnic_cq_service(&enic->cq[cq_wq], |
01f2e4ea SF |
1329 | wq_work_to_do, enic_wq_service, NULL); |
1330 | ||
1331 | /* Accumulate intr event credits for this polling | |
1332 | * cycle. An intr event is the completion of a | |
1333 | * a WQ or RQ packet. | |
1334 | */ | |
1335 | ||
1336 | work_done = rq_work_done + wq_work_done; | |
1337 | ||
1338 | if (work_done > 0) | |
717258ba | 1339 | vnic_intr_return_credits(&enic->intr[intr], |
01f2e4ea SF |
1340 | work_done, |
1341 | 0 /* don't unmask intr */, | |
1342 | 0 /* don't reset intr timer */); | |
1343 | ||
0eb26022 | 1344 | err = vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); |
01f2e4ea | 1345 | |
2d6ddced SF |
1346 | /* Buffer allocation failed. Stay in polling |
1347 | * mode so we can try to fill the ring again. | |
1348 | */ | |
01f2e4ea | 1349 | |
2d6ddced SF |
1350 | if (err) |
1351 | rq_work_done = rq_work_to_do; | |
01f2e4ea | 1352 | |
2d6ddced | 1353 | if (rq_work_done < rq_work_to_do) { |
01f2e4ea | 1354 | |
2d6ddced | 1355 | /* Some work done, but not enough to stay in polling, |
88132f55 | 1356 | * exit polling |
01f2e4ea SF |
1357 | */ |
1358 | ||
288379f0 | 1359 | napi_complete(napi); |
717258ba | 1360 | vnic_intr_unmask(&enic->intr[intr]); |
01f2e4ea SF |
1361 | } |
1362 | ||
1363 | return rq_work_done; | |
1364 | } | |
1365 | ||
1366 | static int enic_poll_msix(struct napi_struct *napi, int budget) | |
1367 | { | |
717258ba VK |
1368 | struct net_device *netdev = napi->dev; |
1369 | struct enic *enic = netdev_priv(netdev); | |
1370 | unsigned int rq = (napi - &enic->napi[0]); | |
1371 | unsigned int cq = enic_cq_rq(enic, rq); | |
1372 | unsigned int intr = enic_msix_rq_intr(enic, rq); | |
01f2e4ea SF |
1373 | unsigned int work_to_do = budget; |
1374 | unsigned int work_done; | |
2d6ddced | 1375 | int err; |
01f2e4ea SF |
1376 | |
1377 | /* Service RQ | |
1378 | */ | |
1379 | ||
717258ba | 1380 | work_done = vnic_cq_service(&enic->cq[cq], |
01f2e4ea SF |
1381 | work_to_do, enic_rq_service, NULL); |
1382 | ||
2d6ddced SF |
1383 | /* Return intr event credits for this polling |
1384 | * cycle. An intr event is the completion of a | |
1385 | * RQ packet. | |
1386 | */ | |
01f2e4ea | 1387 | |
2d6ddced | 1388 | if (work_done > 0) |
717258ba | 1389 | vnic_intr_return_credits(&enic->intr[intr], |
01f2e4ea SF |
1390 | work_done, |
1391 | 0 /* don't unmask intr */, | |
1392 | 0 /* don't reset intr timer */); | |
01f2e4ea | 1393 | |
0eb26022 | 1394 | err = vnic_rq_fill(&enic->rq[rq], enic_rq_alloc_buf); |
2d6ddced SF |
1395 | |
1396 | /* Buffer allocation failed. Stay in polling mode | |
1397 | * so we can try to fill the ring again. | |
1398 | */ | |
1399 | ||
1400 | if (err) | |
1401 | work_done = work_to_do; | |
1402 | ||
1403 | if (work_done < work_to_do) { | |
1404 | ||
1405 | /* Some work done, but not enough to stay in polling, | |
88132f55 | 1406 | * exit polling |
01f2e4ea SF |
1407 | */ |
1408 | ||
288379f0 | 1409 | napi_complete(napi); |
717258ba | 1410 | vnic_intr_unmask(&enic->intr[intr]); |
01f2e4ea SF |
1411 | } |
1412 | ||
1413 | return work_done; | |
1414 | } | |
1415 | ||
1416 | static void enic_notify_timer(unsigned long data) | |
1417 | { | |
1418 | struct enic *enic = (struct enic *)data; | |
1419 | ||
1420 | enic_notify_check(enic); | |
1421 | ||
25f0a061 SF |
1422 | mod_timer(&enic->notify_timer, |
1423 | round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD)); | |
01f2e4ea SF |
1424 | } |
1425 | ||
1426 | static void enic_free_intr(struct enic *enic) | |
1427 | { | |
1428 | struct net_device *netdev = enic->netdev; | |
1429 | unsigned int i; | |
1430 | ||
1431 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1432 | case VNIC_DEV_INTR_MODE_INTX: | |
01f2e4ea SF |
1433 | free_irq(enic->pdev->irq, netdev); |
1434 | break; | |
8f4d248c SF |
1435 | case VNIC_DEV_INTR_MODE_MSI: |
1436 | free_irq(enic->pdev->irq, enic); | |
1437 | break; | |
01f2e4ea SF |
1438 | case VNIC_DEV_INTR_MODE_MSIX: |
1439 | for (i = 0; i < ARRAY_SIZE(enic->msix); i++) | |
1440 | if (enic->msix[i].requested) | |
1441 | free_irq(enic->msix_entry[i].vector, | |
1442 | enic->msix[i].devid); | |
1443 | break; | |
1444 | default: | |
1445 | break; | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | static int enic_request_intr(struct enic *enic) | |
1450 | { | |
1451 | struct net_device *netdev = enic->netdev; | |
717258ba | 1452 | unsigned int i, intr; |
01f2e4ea SF |
1453 | int err = 0; |
1454 | ||
1455 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1456 | ||
1457 | case VNIC_DEV_INTR_MODE_INTX: | |
1458 | ||
1459 | err = request_irq(enic->pdev->irq, enic_isr_legacy, | |
1460 | IRQF_SHARED, netdev->name, netdev); | |
1461 | break; | |
1462 | ||
1463 | case VNIC_DEV_INTR_MODE_MSI: | |
1464 | ||
1465 | err = request_irq(enic->pdev->irq, enic_isr_msi, | |
1466 | 0, netdev->name, enic); | |
1467 | break; | |
1468 | ||
1469 | case VNIC_DEV_INTR_MODE_MSIX: | |
1470 | ||
717258ba VK |
1471 | for (i = 0; i < enic->rq_count; i++) { |
1472 | intr = enic_msix_rq_intr(enic, i); | |
1473 | sprintf(enic->msix[intr].devname, | |
1474 | "%.11s-rx-%d", netdev->name, i); | |
1475 | enic->msix[intr].isr = enic_isr_msix_rq; | |
1476 | enic->msix[intr].devid = &enic->napi[i]; | |
1477 | } | |
01f2e4ea | 1478 | |
717258ba VK |
1479 | for (i = 0; i < enic->wq_count; i++) { |
1480 | intr = enic_msix_wq_intr(enic, i); | |
1481 | sprintf(enic->msix[intr].devname, | |
1482 | "%.11s-tx-%d", netdev->name, i); | |
1483 | enic->msix[intr].isr = enic_isr_msix_wq; | |
1484 | enic->msix[intr].devid = enic; | |
1485 | } | |
01f2e4ea | 1486 | |
717258ba VK |
1487 | intr = enic_msix_err_intr(enic); |
1488 | sprintf(enic->msix[intr].devname, | |
01f2e4ea | 1489 | "%.11s-err", netdev->name); |
717258ba VK |
1490 | enic->msix[intr].isr = enic_isr_msix_err; |
1491 | enic->msix[intr].devid = enic; | |
01f2e4ea | 1492 | |
717258ba VK |
1493 | intr = enic_msix_notify_intr(enic); |
1494 | sprintf(enic->msix[intr].devname, | |
01f2e4ea | 1495 | "%.11s-notify", netdev->name); |
717258ba VK |
1496 | enic->msix[intr].isr = enic_isr_msix_notify; |
1497 | enic->msix[intr].devid = enic; | |
1498 | ||
1499 | for (i = 0; i < ARRAY_SIZE(enic->msix); i++) | |
1500 | enic->msix[i].requested = 0; | |
01f2e4ea | 1501 | |
717258ba | 1502 | for (i = 0; i < enic->intr_count; i++) { |
01f2e4ea SF |
1503 | err = request_irq(enic->msix_entry[i].vector, |
1504 | enic->msix[i].isr, 0, | |
1505 | enic->msix[i].devname, | |
1506 | enic->msix[i].devid); | |
1507 | if (err) { | |
1508 | enic_free_intr(enic); | |
1509 | break; | |
1510 | } | |
1511 | enic->msix[i].requested = 1; | |
1512 | } | |
1513 | ||
1514 | break; | |
1515 | ||
1516 | default: | |
1517 | break; | |
1518 | } | |
1519 | ||
1520 | return err; | |
1521 | } | |
1522 | ||
b3d18d19 SF |
1523 | static void enic_synchronize_irqs(struct enic *enic) |
1524 | { | |
1525 | unsigned int i; | |
1526 | ||
1527 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1528 | case VNIC_DEV_INTR_MODE_INTX: | |
1529 | case VNIC_DEV_INTR_MODE_MSI: | |
1530 | synchronize_irq(enic->pdev->irq); | |
1531 | break; | |
1532 | case VNIC_DEV_INTR_MODE_MSIX: | |
1533 | for (i = 0; i < enic->intr_count; i++) | |
1534 | synchronize_irq(enic->msix_entry[i].vector); | |
1535 | break; | |
1536 | default: | |
1537 | break; | |
1538 | } | |
1539 | } | |
1540 | ||
383ab92f | 1541 | static int enic_dev_notify_set(struct enic *enic) |
01f2e4ea SF |
1542 | { |
1543 | int err; | |
1544 | ||
56ac88b3 | 1545 | spin_lock(&enic->devcmd_lock); |
01f2e4ea SF |
1546 | switch (vnic_dev_get_intr_mode(enic->vdev)) { |
1547 | case VNIC_DEV_INTR_MODE_INTX: | |
717258ba VK |
1548 | err = vnic_dev_notify_set(enic->vdev, |
1549 | enic_legacy_notify_intr()); | |
01f2e4ea SF |
1550 | break; |
1551 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
1552 | err = vnic_dev_notify_set(enic->vdev, |
1553 | enic_msix_notify_intr(enic)); | |
01f2e4ea SF |
1554 | break; |
1555 | default: | |
1556 | err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */); | |
1557 | break; | |
1558 | } | |
56ac88b3 | 1559 | spin_unlock(&enic->devcmd_lock); |
01f2e4ea SF |
1560 | |
1561 | return err; | |
1562 | } | |
1563 | ||
1564 | static void enic_notify_timer_start(struct enic *enic) | |
1565 | { | |
1566 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
1567 | case VNIC_DEV_INTR_MODE_MSI: | |
1568 | mod_timer(&enic->notify_timer, jiffies); | |
1569 | break; | |
1570 | default: | |
1571 | /* Using intr for notification for INTx/MSI-X */ | |
1572 | break; | |
6403eab1 | 1573 | } |
01f2e4ea SF |
1574 | } |
1575 | ||
1576 | /* rtnl lock is held, process context */ | |
1577 | static int enic_open(struct net_device *netdev) | |
1578 | { | |
1579 | struct enic *enic = netdev_priv(netdev); | |
1580 | unsigned int i; | |
1581 | int err; | |
1582 | ||
4b75a442 SF |
1583 | err = enic_request_intr(enic); |
1584 | if (err) { | |
a7a79deb | 1585 | netdev_err(netdev, "Unable to request irq.\n"); |
4b75a442 SF |
1586 | return err; |
1587 | } | |
1588 | ||
383ab92f | 1589 | err = enic_dev_notify_set(enic); |
4b75a442 | 1590 | if (err) { |
a7a79deb VK |
1591 | netdev_err(netdev, |
1592 | "Failed to alloc notify buffer, aborting.\n"); | |
4b75a442 SF |
1593 | goto err_out_free_intr; |
1594 | } | |
1595 | ||
01f2e4ea | 1596 | for (i = 0; i < enic->rq_count; i++) { |
0eb26022 | 1597 | vnic_rq_fill(&enic->rq[i], enic_rq_alloc_buf); |
2d6ddced SF |
1598 | /* Need at least one buffer on ring to get going */ |
1599 | if (vnic_rq_desc_used(&enic->rq[i]) == 0) { | |
a7a79deb | 1600 | netdev_err(netdev, "Unable to alloc receive buffers\n"); |
2d6ddced | 1601 | err = -ENOMEM; |
4b75a442 | 1602 | goto err_out_notify_unset; |
01f2e4ea SF |
1603 | } |
1604 | } | |
1605 | ||
1606 | for (i = 0; i < enic->wq_count; i++) | |
1607 | vnic_wq_enable(&enic->wq[i]); | |
1608 | for (i = 0; i < enic->rq_count; i++) | |
1609 | vnic_rq_enable(&enic->rq[i]); | |
1610 | ||
3f192795 | 1611 | if (!enic_is_dynamic(enic)) |
29639059 | 1612 | enic_dev_add_station_addr(enic); |
3f192795 | 1613 | |
319d7e84 | 1614 | enic_set_rx_mode(netdev); |
01f2e4ea SF |
1615 | |
1616 | netif_wake_queue(netdev); | |
717258ba VK |
1617 | |
1618 | for (i = 0; i < enic->rq_count; i++) | |
1619 | napi_enable(&enic->napi[i]); | |
1620 | ||
383ab92f | 1621 | enic_dev_enable(enic); |
01f2e4ea SF |
1622 | |
1623 | for (i = 0; i < enic->intr_count; i++) | |
1624 | vnic_intr_unmask(&enic->intr[i]); | |
1625 | ||
1626 | enic_notify_timer_start(enic); | |
1627 | ||
1628 | return 0; | |
4b75a442 SF |
1629 | |
1630 | err_out_notify_unset: | |
383ab92f | 1631 | enic_dev_notify_unset(enic); |
4b75a442 SF |
1632 | err_out_free_intr: |
1633 | enic_free_intr(enic); | |
1634 | ||
1635 | return err; | |
01f2e4ea SF |
1636 | } |
1637 | ||
1638 | /* rtnl lock is held, process context */ | |
1639 | static int enic_stop(struct net_device *netdev) | |
1640 | { | |
1641 | struct enic *enic = netdev_priv(netdev); | |
1642 | unsigned int i; | |
1643 | int err; | |
1644 | ||
29046f9b | 1645 | for (i = 0; i < enic->intr_count; i++) { |
b3d18d19 | 1646 | vnic_intr_mask(&enic->intr[i]); |
29046f9b VK |
1647 | (void)vnic_intr_masked(&enic->intr[i]); /* flush write */ |
1648 | } | |
b3d18d19 SF |
1649 | |
1650 | enic_synchronize_irqs(enic); | |
1651 | ||
01f2e4ea SF |
1652 | del_timer_sync(&enic->notify_timer); |
1653 | ||
383ab92f | 1654 | enic_dev_disable(enic); |
717258ba VK |
1655 | |
1656 | for (i = 0; i < enic->rq_count; i++) | |
1657 | napi_disable(&enic->napi[i]); | |
1658 | ||
b3d18d19 SF |
1659 | netif_carrier_off(netdev); |
1660 | netif_tx_disable(netdev); | |
3f192795 RP |
1661 | |
1662 | if (!enic_is_dynamic(enic)) | |
29639059 | 1663 | enic_dev_del_station_addr(enic); |
f8bd9091 | 1664 | |
01f2e4ea SF |
1665 | for (i = 0; i < enic->wq_count; i++) { |
1666 | err = vnic_wq_disable(&enic->wq[i]); | |
1667 | if (err) | |
1668 | return err; | |
1669 | } | |
1670 | for (i = 0; i < enic->rq_count; i++) { | |
1671 | err = vnic_rq_disable(&enic->rq[i]); | |
1672 | if (err) | |
1673 | return err; | |
1674 | } | |
1675 | ||
383ab92f | 1676 | enic_dev_notify_unset(enic); |
4b75a442 SF |
1677 | enic_free_intr(enic); |
1678 | ||
01f2e4ea SF |
1679 | for (i = 0; i < enic->wq_count; i++) |
1680 | vnic_wq_clean(&enic->wq[i], enic_free_wq_buf); | |
1681 | for (i = 0; i < enic->rq_count; i++) | |
1682 | vnic_rq_clean(&enic->rq[i], enic_free_rq_buf); | |
1683 | for (i = 0; i < enic->cq_count; i++) | |
1684 | vnic_cq_clean(&enic->cq[i]); | |
1685 | for (i = 0; i < enic->intr_count; i++) | |
1686 | vnic_intr_clean(&enic->intr[i]); | |
1687 | ||
1688 | return 0; | |
1689 | } | |
1690 | ||
1691 | static int enic_change_mtu(struct net_device *netdev, int new_mtu) | |
1692 | { | |
1693 | struct enic *enic = netdev_priv(netdev); | |
1694 | int running = netif_running(netdev); | |
1695 | ||
25f0a061 SF |
1696 | if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU) |
1697 | return -EINVAL; | |
1698 | ||
c97c894d RP |
1699 | if (enic_is_dynamic(enic)) |
1700 | return -EOPNOTSUPP; | |
1701 | ||
01f2e4ea SF |
1702 | if (running) |
1703 | enic_stop(netdev); | |
1704 | ||
01f2e4ea SF |
1705 | netdev->mtu = new_mtu; |
1706 | ||
1707 | if (netdev->mtu > enic->port_mtu) | |
a7a79deb VK |
1708 | netdev_warn(netdev, |
1709 | "interface MTU (%d) set higher than port MTU (%d)\n", | |
1710 | netdev->mtu, enic->port_mtu); | |
01f2e4ea SF |
1711 | |
1712 | if (running) | |
1713 | enic_open(netdev); | |
1714 | ||
1715 | return 0; | |
1716 | } | |
1717 | ||
c97c894d RP |
1718 | static void enic_change_mtu_work(struct work_struct *work) |
1719 | { | |
1720 | struct enic *enic = container_of(work, struct enic, change_mtu_work); | |
1721 | struct net_device *netdev = enic->netdev; | |
1722 | int new_mtu = vnic_dev_mtu(enic->vdev); | |
1723 | int err; | |
1724 | unsigned int i; | |
1725 | ||
1726 | new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu)); | |
1727 | ||
1728 | rtnl_lock(); | |
1729 | ||
1730 | /* Stop RQ */ | |
1731 | del_timer_sync(&enic->notify_timer); | |
1732 | ||
1733 | for (i = 0; i < enic->rq_count; i++) | |
1734 | napi_disable(&enic->napi[i]); | |
1735 | ||
1736 | vnic_intr_mask(&enic->intr[0]); | |
1737 | enic_synchronize_irqs(enic); | |
1738 | err = vnic_rq_disable(&enic->rq[0]); | |
1739 | if (err) { | |
1740 | netdev_err(netdev, "Unable to disable RQ.\n"); | |
1741 | return; | |
1742 | } | |
1743 | vnic_rq_clean(&enic->rq[0], enic_free_rq_buf); | |
1744 | vnic_cq_clean(&enic->cq[0]); | |
1745 | vnic_intr_clean(&enic->intr[0]); | |
1746 | ||
1747 | /* Fill RQ with new_mtu-sized buffers */ | |
1748 | netdev->mtu = new_mtu; | |
1749 | vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf); | |
1750 | /* Need at least one buffer on ring to get going */ | |
1751 | if (vnic_rq_desc_used(&enic->rq[0]) == 0) { | |
1752 | netdev_err(netdev, "Unable to alloc receive buffers.\n"); | |
1753 | return; | |
1754 | } | |
1755 | ||
1756 | /* Start RQ */ | |
1757 | vnic_rq_enable(&enic->rq[0]); | |
1758 | napi_enable(&enic->napi[0]); | |
1759 | vnic_intr_unmask(&enic->intr[0]); | |
1760 | enic_notify_timer_start(enic); | |
1761 | ||
1762 | rtnl_unlock(); | |
1763 | ||
1764 | netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu); | |
1765 | } | |
1766 | ||
01f2e4ea SF |
1767 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1768 | static void enic_poll_controller(struct net_device *netdev) | |
1769 | { | |
1770 | struct enic *enic = netdev_priv(netdev); | |
1771 | struct vnic_dev *vdev = enic->vdev; | |
717258ba | 1772 | unsigned int i, intr; |
01f2e4ea SF |
1773 | |
1774 | switch (vnic_dev_get_intr_mode(vdev)) { | |
1775 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
1776 | for (i = 0; i < enic->rq_count; i++) { |
1777 | intr = enic_msix_rq_intr(enic, i); | |
79aeec58 VK |
1778 | enic_isr_msix_rq(enic->msix_entry[intr].vector, |
1779 | &enic->napi[i]); | |
717258ba | 1780 | } |
b880a954 VK |
1781 | |
1782 | for (i = 0; i < enic->wq_count; i++) { | |
1783 | intr = enic_msix_wq_intr(enic, i); | |
1784 | enic_isr_msix_wq(enic->msix_entry[intr].vector, enic); | |
1785 | } | |
1786 | ||
01f2e4ea SF |
1787 | break; |
1788 | case VNIC_DEV_INTR_MODE_MSI: | |
1789 | enic_isr_msi(enic->pdev->irq, enic); | |
1790 | break; | |
1791 | case VNIC_DEV_INTR_MODE_INTX: | |
1792 | enic_isr_legacy(enic->pdev->irq, netdev); | |
1793 | break; | |
1794 | default: | |
1795 | break; | |
1796 | } | |
1797 | } | |
1798 | #endif | |
1799 | ||
1800 | static int enic_dev_wait(struct vnic_dev *vdev, | |
1801 | int (*start)(struct vnic_dev *, int), | |
1802 | int (*finished)(struct vnic_dev *, int *), | |
1803 | int arg) | |
1804 | { | |
1805 | unsigned long time; | |
1806 | int done; | |
1807 | int err; | |
1808 | ||
1809 | BUG_ON(in_interrupt()); | |
1810 | ||
1811 | err = start(vdev, arg); | |
1812 | if (err) | |
1813 | return err; | |
1814 | ||
1815 | /* Wait for func to complete...2 seconds max | |
1816 | */ | |
1817 | ||
1818 | time = jiffies + (HZ * 2); | |
1819 | do { | |
1820 | ||
1821 | err = finished(vdev, &done); | |
1822 | if (err) | |
1823 | return err; | |
1824 | ||
1825 | if (done) | |
1826 | return 0; | |
1827 | ||
1828 | schedule_timeout_uninterruptible(HZ / 10); | |
1829 | ||
1830 | } while (time_after(time, jiffies)); | |
1831 | ||
1832 | return -ETIMEDOUT; | |
1833 | } | |
1834 | ||
1835 | static int enic_dev_open(struct enic *enic) | |
1836 | { | |
1837 | int err; | |
1838 | ||
1839 | err = enic_dev_wait(enic->vdev, vnic_dev_open, | |
1840 | vnic_dev_open_done, 0); | |
1841 | if (err) | |
a7a79deb VK |
1842 | dev_err(enic_get_dev(enic), "vNIC device open failed, err %d\n", |
1843 | err); | |
01f2e4ea SF |
1844 | |
1845 | return err; | |
1846 | } | |
1847 | ||
99ef5639 | 1848 | static int enic_dev_hang_reset(struct enic *enic) |
01f2e4ea SF |
1849 | { |
1850 | int err; | |
1851 | ||
99ef5639 VK |
1852 | err = enic_dev_wait(enic->vdev, vnic_dev_hang_reset, |
1853 | vnic_dev_hang_reset_done, 0); | |
01f2e4ea | 1854 | if (err) |
a7a79deb VK |
1855 | netdev_err(enic->netdev, "vNIC hang reset failed, err %d\n", |
1856 | err); | |
01f2e4ea SF |
1857 | |
1858 | return err; | |
1859 | } | |
1860 | ||
717258ba VK |
1861 | static int enic_set_rsskey(struct enic *enic) |
1862 | { | |
1f4f067f | 1863 | dma_addr_t rss_key_buf_pa; |
717258ba VK |
1864 | union vnic_rss_key *rss_key_buf_va = NULL; |
1865 | union vnic_rss_key rss_key = { | |
1866 | .key[0].b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}, | |
1867 | .key[1].b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}, | |
1868 | .key[2].b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}, | |
1869 | .key[3].b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}, | |
1870 | }; | |
1871 | int err; | |
1872 | ||
1873 | rss_key_buf_va = pci_alloc_consistent(enic->pdev, | |
1874 | sizeof(union vnic_rss_key), &rss_key_buf_pa); | |
1875 | if (!rss_key_buf_va) | |
1876 | return -ENOMEM; | |
1877 | ||
1878 | memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key)); | |
1879 | ||
1880 | spin_lock(&enic->devcmd_lock); | |
1881 | err = enic_set_rss_key(enic, | |
1882 | rss_key_buf_pa, | |
1883 | sizeof(union vnic_rss_key)); | |
1884 | spin_unlock(&enic->devcmd_lock); | |
1885 | ||
1886 | pci_free_consistent(enic->pdev, sizeof(union vnic_rss_key), | |
1887 | rss_key_buf_va, rss_key_buf_pa); | |
1888 | ||
1889 | return err; | |
1890 | } | |
1891 | ||
1892 | static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) | |
1893 | { | |
1f4f067f | 1894 | dma_addr_t rss_cpu_buf_pa; |
717258ba VK |
1895 | union vnic_rss_cpu *rss_cpu_buf_va = NULL; |
1896 | unsigned int i; | |
1897 | int err; | |
1898 | ||
1899 | rss_cpu_buf_va = pci_alloc_consistent(enic->pdev, | |
1900 | sizeof(union vnic_rss_cpu), &rss_cpu_buf_pa); | |
1901 | if (!rss_cpu_buf_va) | |
1902 | return -ENOMEM; | |
1903 | ||
1904 | for (i = 0; i < (1 << rss_hash_bits); i++) | |
1905 | (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; | |
1906 | ||
1907 | spin_lock(&enic->devcmd_lock); | |
1908 | err = enic_set_rss_cpu(enic, | |
1909 | rss_cpu_buf_pa, | |
1910 | sizeof(union vnic_rss_cpu)); | |
1911 | spin_unlock(&enic->devcmd_lock); | |
1912 | ||
1913 | pci_free_consistent(enic->pdev, sizeof(union vnic_rss_cpu), | |
1914 | rss_cpu_buf_va, rss_cpu_buf_pa); | |
1915 | ||
1916 | return err; | |
1917 | } | |
1918 | ||
1919 | static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu, | |
1920 | u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable) | |
68f71708 | 1921 | { |
68f71708 SF |
1922 | const u8 tso_ipid_split_en = 0; |
1923 | const u8 ig_vlan_strip_en = 1; | |
383ab92f | 1924 | int err; |
68f71708 | 1925 | |
717258ba VK |
1926 | /* Enable VLAN tag stripping. |
1927 | */ | |
68f71708 | 1928 | |
383ab92f VK |
1929 | spin_lock(&enic->devcmd_lock); |
1930 | err = enic_set_nic_cfg(enic, | |
68f71708 SF |
1931 | rss_default_cpu, rss_hash_type, |
1932 | rss_hash_bits, rss_base_cpu, | |
1933 | rss_enable, tso_ipid_split_en, | |
1934 | ig_vlan_strip_en); | |
383ab92f VK |
1935 | spin_unlock(&enic->devcmd_lock); |
1936 | ||
1937 | return err; | |
1938 | } | |
1939 | ||
717258ba VK |
1940 | static int enic_set_rss_nic_cfg(struct enic *enic) |
1941 | { | |
1942 | struct device *dev = enic_get_dev(enic); | |
1943 | const u8 rss_default_cpu = 0; | |
1944 | const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 | | |
1945 | NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 | | |
1946 | NIC_CFG_RSS_HASH_TYPE_IPV6 | | |
1947 | NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; | |
1948 | const u8 rss_hash_bits = 7; | |
1949 | const u8 rss_base_cpu = 0; | |
1950 | u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1); | |
1951 | ||
1952 | if (rss_enable) { | |
1953 | if (!enic_set_rsskey(enic)) { | |
1954 | if (enic_set_rsscpu(enic, rss_hash_bits)) { | |
1955 | rss_enable = 0; | |
1956 | dev_warn(dev, "RSS disabled, " | |
1957 | "Failed to set RSS cpu indirection table."); | |
1958 | } | |
1959 | } else { | |
1960 | rss_enable = 0; | |
1961 | dev_warn(dev, "RSS disabled, Failed to set RSS key.\n"); | |
1962 | } | |
1963 | } | |
1964 | ||
1965 | return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type, | |
1966 | rss_hash_bits, rss_base_cpu, rss_enable); | |
f8cac14a VK |
1967 | } |
1968 | ||
01f2e4ea SF |
1969 | static void enic_reset(struct work_struct *work) |
1970 | { | |
1971 | struct enic *enic = container_of(work, struct enic, reset); | |
1972 | ||
1973 | if (!netif_running(enic->netdev)) | |
1974 | return; | |
1975 | ||
1976 | rtnl_lock(); | |
1977 | ||
383ab92f | 1978 | enic_dev_hang_notify(enic); |
01f2e4ea | 1979 | enic_stop(enic->netdev); |
99ef5639 | 1980 | enic_dev_hang_reset(enic); |
e0afe53f | 1981 | enic_reset_addr_lists(enic); |
01f2e4ea | 1982 | enic_init_vnic_resources(enic); |
717258ba | 1983 | enic_set_rss_nic_cfg(enic); |
f8cac14a | 1984 | enic_dev_set_ig_vlan_rewrite_mode(enic); |
01f2e4ea SF |
1985 | enic_open(enic->netdev); |
1986 | ||
1987 | rtnl_unlock(); | |
1988 | } | |
1989 | ||
1990 | static int enic_set_intr_mode(struct enic *enic) | |
1991 | { | |
717258ba | 1992 | unsigned int n = min_t(unsigned int, enic->rq_count, ENIC_RQ_MAX); |
1cbb1a61 | 1993 | unsigned int m = min_t(unsigned int, enic->wq_count, ENIC_WQ_MAX); |
01f2e4ea SF |
1994 | unsigned int i; |
1995 | ||
1996 | /* Set interrupt mode (INTx, MSI, MSI-X) depending | |
717258ba | 1997 | * on system capabilities. |
01f2e4ea SF |
1998 | * |
1999 | * Try MSI-X first | |
2000 | * | |
2001 | * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs | |
2002 | * (the second to last INTR is used for WQ/RQ errors) | |
2003 | * (the last INTR is used for notifications) | |
2004 | */ | |
2005 | ||
2006 | BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2); | |
2007 | for (i = 0; i < n + m + 2; i++) | |
2008 | enic->msix_entry[i].entry = i; | |
2009 | ||
717258ba VK |
2010 | /* Use multiple RQs if RSS is enabled |
2011 | */ | |
2012 | ||
2013 | if (ENIC_SETTING(enic, RSS) && | |
2014 | enic->config.intr_mode < 1 && | |
01f2e4ea SF |
2015 | enic->rq_count >= n && |
2016 | enic->wq_count >= m && | |
2017 | enic->cq_count >= n + m && | |
717258ba | 2018 | enic->intr_count >= n + m + 2) { |
01f2e4ea | 2019 | |
717258ba | 2020 | if (!pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) { |
01f2e4ea | 2021 | |
717258ba VK |
2022 | enic->rq_count = n; |
2023 | enic->wq_count = m; | |
2024 | enic->cq_count = n + m; | |
2025 | enic->intr_count = n + m + 2; | |
01f2e4ea | 2026 | |
717258ba VK |
2027 | vnic_dev_set_intr_mode(enic->vdev, |
2028 | VNIC_DEV_INTR_MODE_MSIX); | |
2029 | ||
2030 | return 0; | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | if (enic->config.intr_mode < 1 && | |
2035 | enic->rq_count >= 1 && | |
2036 | enic->wq_count >= m && | |
2037 | enic->cq_count >= 1 + m && | |
2038 | enic->intr_count >= 1 + m + 2) { | |
2039 | if (!pci_enable_msix(enic->pdev, enic->msix_entry, 1 + m + 2)) { | |
2040 | ||
2041 | enic->rq_count = 1; | |
2042 | enic->wq_count = m; | |
2043 | enic->cq_count = 1 + m; | |
2044 | enic->intr_count = 1 + m + 2; | |
2045 | ||
2046 | vnic_dev_set_intr_mode(enic->vdev, | |
2047 | VNIC_DEV_INTR_MODE_MSIX); | |
2048 | ||
2049 | return 0; | |
2050 | } | |
01f2e4ea SF |
2051 | } |
2052 | ||
2053 | /* Next try MSI | |
2054 | * | |
2055 | * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR | |
2056 | */ | |
2057 | ||
2058 | if (enic->config.intr_mode < 2 && | |
2059 | enic->rq_count >= 1 && | |
2060 | enic->wq_count >= 1 && | |
2061 | enic->cq_count >= 2 && | |
2062 | enic->intr_count >= 1 && | |
2063 | !pci_enable_msi(enic->pdev)) { | |
2064 | ||
2065 | enic->rq_count = 1; | |
2066 | enic->wq_count = 1; | |
2067 | enic->cq_count = 2; | |
2068 | enic->intr_count = 1; | |
2069 | ||
2070 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI); | |
2071 | ||
2072 | return 0; | |
2073 | } | |
2074 | ||
2075 | /* Next try INTx | |
2076 | * | |
2077 | * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs | |
2078 | * (the first INTR is used for WQ/RQ) | |
2079 | * (the second INTR is used for WQ/RQ errors) | |
2080 | * (the last INTR is used for notifications) | |
2081 | */ | |
2082 | ||
2083 | if (enic->config.intr_mode < 3 && | |
2084 | enic->rq_count >= 1 && | |
2085 | enic->wq_count >= 1 && | |
2086 | enic->cq_count >= 2 && | |
2087 | enic->intr_count >= 3) { | |
2088 | ||
2089 | enic->rq_count = 1; | |
2090 | enic->wq_count = 1; | |
2091 | enic->cq_count = 2; | |
2092 | enic->intr_count = 3; | |
2093 | ||
2094 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX); | |
2095 | ||
2096 | return 0; | |
2097 | } | |
2098 | ||
2099 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); | |
2100 | ||
2101 | return -EINVAL; | |
2102 | } | |
2103 | ||
2104 | static void enic_clear_intr_mode(struct enic *enic) | |
2105 | { | |
2106 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
2107 | case VNIC_DEV_INTR_MODE_MSIX: | |
2108 | pci_disable_msix(enic->pdev); | |
2109 | break; | |
2110 | case VNIC_DEV_INTR_MODE_MSI: | |
2111 | pci_disable_msi(enic->pdev); | |
2112 | break; | |
2113 | default: | |
2114 | break; | |
2115 | } | |
2116 | ||
2117 | vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN); | |
2118 | } | |
2119 | ||
f8bd9091 SF |
2120 | static const struct net_device_ops enic_netdev_dynamic_ops = { |
2121 | .ndo_open = enic_open, | |
2122 | .ndo_stop = enic_stop, | |
2123 | .ndo_start_xmit = enic_hard_start_xmit, | |
f20530bc | 2124 | .ndo_get_stats64 = enic_get_stats, |
f8bd9091 | 2125 | .ndo_validate_addr = eth_validate_addr, |
319d7e84 | 2126 | .ndo_set_rx_mode = enic_set_rx_mode, |
f8bd9091 SF |
2127 | .ndo_set_mac_address = enic_set_mac_address_dynamic, |
2128 | .ndo_change_mtu = enic_change_mtu, | |
f8bd9091 SF |
2129 | .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, |
2130 | .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, | |
2131 | .ndo_tx_timeout = enic_tx_timeout, | |
2132 | .ndo_set_vf_port = enic_set_vf_port, | |
2133 | .ndo_get_vf_port = enic_get_vf_port, | |
0b1c00fc | 2134 | .ndo_set_vf_mac = enic_set_vf_mac, |
f8bd9091 SF |
2135 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2136 | .ndo_poll_controller = enic_poll_controller, | |
2137 | #endif | |
2138 | }; | |
2139 | ||
afe29f7a SH |
2140 | static const struct net_device_ops enic_netdev_ops = { |
2141 | .ndo_open = enic_open, | |
2142 | .ndo_stop = enic_stop, | |
00829823 | 2143 | .ndo_start_xmit = enic_hard_start_xmit, |
f20530bc | 2144 | .ndo_get_stats64 = enic_get_stats, |
afe29f7a | 2145 | .ndo_validate_addr = eth_validate_addr, |
f8bd9091 | 2146 | .ndo_set_mac_address = enic_set_mac_address, |
319d7e84 | 2147 | .ndo_set_rx_mode = enic_set_rx_mode, |
afe29f7a | 2148 | .ndo_change_mtu = enic_change_mtu, |
afe29f7a SH |
2149 | .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid, |
2150 | .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid, | |
2151 | .ndo_tx_timeout = enic_tx_timeout, | |
3f192795 RP |
2152 | .ndo_set_vf_port = enic_set_vf_port, |
2153 | .ndo_get_vf_port = enic_get_vf_port, | |
2154 | .ndo_set_vf_mac = enic_set_vf_mac, | |
afe29f7a SH |
2155 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2156 | .ndo_poll_controller = enic_poll_controller, | |
2157 | #endif | |
2158 | }; | |
2159 | ||
2fdba388 | 2160 | static void enic_dev_deinit(struct enic *enic) |
6fdfa970 | 2161 | { |
717258ba VK |
2162 | unsigned int i; |
2163 | ||
2164 | for (i = 0; i < enic->rq_count; i++) | |
2165 | netif_napi_del(&enic->napi[i]); | |
2166 | ||
6fdfa970 SF |
2167 | enic_free_vnic_resources(enic); |
2168 | enic_clear_intr_mode(enic); | |
2169 | } | |
2170 | ||
2fdba388 | 2171 | static int enic_dev_init(struct enic *enic) |
6fdfa970 | 2172 | { |
a7a79deb | 2173 | struct device *dev = enic_get_dev(enic); |
6fdfa970 | 2174 | struct net_device *netdev = enic->netdev; |
717258ba | 2175 | unsigned int i; |
6fdfa970 SF |
2176 | int err; |
2177 | ||
ea7ea65a VK |
2178 | /* Get interrupt coalesce timer info */ |
2179 | err = enic_dev_intr_coal_timer_info(enic); | |
2180 | if (err) { | |
2181 | dev_warn(dev, "Using default conversion factor for " | |
2182 | "interrupt coalesce timer\n"); | |
2183 | vnic_dev_intr_coal_timer_info_default(enic->vdev); | |
2184 | } | |
2185 | ||
6fdfa970 SF |
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 | ||
717258ba | 2222 | err = enic_set_rss_nic_cfg(enic); |
6fdfa970 | 2223 | if (err) { |
a7a79deb | 2224 | dev_err(dev, "Failed to config nic, aborting\n"); |
6fdfa970 SF |
2225 | goto err_out_free_vnic_resources; |
2226 | } | |
2227 | ||
2228 | switch (vnic_dev_get_intr_mode(enic->vdev)) { | |
2229 | default: | |
717258ba | 2230 | netif_napi_add(netdev, &enic->napi[0], enic_poll, 64); |
6fdfa970 SF |
2231 | break; |
2232 | case VNIC_DEV_INTR_MODE_MSIX: | |
717258ba VK |
2233 | for (i = 0; i < enic->rq_count; i++) |
2234 | netif_napi_add(netdev, &enic->napi[i], | |
2235 | enic_poll_msix, 64); | |
6fdfa970 SF |
2236 | break; |
2237 | } | |
2238 | ||
2239 | return 0; | |
2240 | ||
2241 | err_out_free_vnic_resources: | |
2242 | enic_clear_intr_mode(enic); | |
2243 | enic_free_vnic_resources(enic); | |
2244 | ||
2245 | return err; | |
2246 | } | |
2247 | ||
27e6c7d3 SF |
2248 | static void enic_iounmap(struct enic *enic) |
2249 | { | |
2250 | unsigned int i; | |
2251 | ||
2252 | for (i = 0; i < ARRAY_SIZE(enic->bar); i++) | |
2253 | if (enic->bar[i].vaddr) | |
2254 | iounmap(enic->bar[i].vaddr); | |
2255 | } | |
2256 | ||
01f2e4ea SF |
2257 | static int __devinit enic_probe(struct pci_dev *pdev, |
2258 | const struct pci_device_id *ent) | |
2259 | { | |
a7a79deb | 2260 | struct device *dev = &pdev->dev; |
01f2e4ea SF |
2261 | struct net_device *netdev; |
2262 | struct enic *enic; | |
2263 | int using_dac = 0; | |
2264 | unsigned int i; | |
2265 | int err; | |
3f192795 | 2266 | int num_pps = 1; |
8749b427 RP |
2267 | #ifdef CONFIG_PCI_IOV |
2268 | int pos = 0; | |
2269 | #endif | |
01f2e4ea | 2270 | |
01f2e4ea SF |
2271 | /* Allocate net device structure and initialize. Private |
2272 | * instance data is initialized to zero. | |
2273 | */ | |
2274 | ||
2275 | netdev = alloc_etherdev(sizeof(struct enic)); | |
2276 | if (!netdev) { | |
a7a79deb | 2277 | pr_err("Etherdev alloc failed, aborting\n"); |
01f2e4ea SF |
2278 | return -ENOMEM; |
2279 | } | |
2280 | ||
01f2e4ea SF |
2281 | pci_set_drvdata(pdev, netdev); |
2282 | ||
2283 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2284 | ||
2285 | enic = netdev_priv(netdev); | |
2286 | enic->netdev = netdev; | |
2287 | enic->pdev = pdev; | |
2288 | ||
2289 | /* Setup PCI resources | |
2290 | */ | |
2291 | ||
29046f9b | 2292 | err = pci_enable_device_mem(pdev); |
01f2e4ea | 2293 | if (err) { |
a7a79deb | 2294 | dev_err(dev, "Cannot enable PCI device, aborting\n"); |
01f2e4ea SF |
2295 | goto err_out_free_netdev; |
2296 | } | |
2297 | ||
2298 | err = pci_request_regions(pdev, DRV_NAME); | |
2299 | if (err) { | |
a7a79deb | 2300 | dev_err(dev, "Cannot request PCI regions, aborting\n"); |
01f2e4ea SF |
2301 | goto err_out_disable_device; |
2302 | } | |
2303 | ||
2304 | pci_set_master(pdev); | |
2305 | ||
2306 | /* Query PCI controller on system for DMA addressing | |
2307 | * limitation for the device. Try 40-bit first, and | |
2308 | * fail to 32-bit. | |
2309 | */ | |
2310 | ||
50cf156a | 2311 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); |
01f2e4ea | 2312 | if (err) { |
284901a9 | 2313 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
01f2e4ea | 2314 | if (err) { |
a7a79deb | 2315 | dev_err(dev, "No usable DMA configuration, aborting\n"); |
01f2e4ea SF |
2316 | goto err_out_release_regions; |
2317 | } | |
284901a9 | 2318 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
01f2e4ea | 2319 | if (err) { |
a7a79deb VK |
2320 | dev_err(dev, "Unable to obtain %u-bit DMA " |
2321 | "for consistent allocations, aborting\n", 32); | |
01f2e4ea SF |
2322 | goto err_out_release_regions; |
2323 | } | |
2324 | } else { | |
50cf156a | 2325 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); |
01f2e4ea | 2326 | if (err) { |
a7a79deb VK |
2327 | dev_err(dev, "Unable to obtain %u-bit DMA " |
2328 | "for consistent allocations, aborting\n", 40); | |
01f2e4ea SF |
2329 | goto err_out_release_regions; |
2330 | } | |
2331 | using_dac = 1; | |
2332 | } | |
2333 | ||
27e6c7d3 | 2334 | /* Map vNIC resources from BAR0-5 |
01f2e4ea SF |
2335 | */ |
2336 | ||
27e6c7d3 SF |
2337 | for (i = 0; i < ARRAY_SIZE(enic->bar); i++) { |
2338 | if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM)) | |
2339 | continue; | |
2340 | enic->bar[i].len = pci_resource_len(pdev, i); | |
2341 | enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len); | |
2342 | if (!enic->bar[i].vaddr) { | |
a7a79deb | 2343 | dev_err(dev, "Cannot memory-map BAR %d, aborting\n", i); |
27e6c7d3 SF |
2344 | err = -ENODEV; |
2345 | goto err_out_iounmap; | |
2346 | } | |
2347 | enic->bar[i].bus_addr = pci_resource_start(pdev, i); | |
01f2e4ea SF |
2348 | } |
2349 | ||
2350 | /* Register vNIC device | |
2351 | */ | |
2352 | ||
27e6c7d3 SF |
2353 | enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar, |
2354 | ARRAY_SIZE(enic->bar)); | |
01f2e4ea | 2355 | if (!enic->vdev) { |
a7a79deb | 2356 | dev_err(dev, "vNIC registration failed, aborting\n"); |
01f2e4ea SF |
2357 | err = -ENODEV; |
2358 | goto err_out_iounmap; | |
2359 | } | |
2360 | ||
8749b427 RP |
2361 | #ifdef CONFIG_PCI_IOV |
2362 | /* Get number of subvnics */ | |
2363 | pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); | |
2364 | if (pos) { | |
2365 | pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, | |
2366 | (u16 *)&enic->num_vfs); | |
2367 | if (enic->num_vfs) { | |
2368 | err = pci_enable_sriov(pdev, enic->num_vfs); | |
2369 | if (err) { | |
2370 | dev_err(dev, "SRIOV enable failed, aborting." | |
2371 | " pci_enable_sriov() returned %d\n", | |
2372 | err); | |
2373 | goto err_out_vnic_unregister; | |
2374 | } | |
2375 | enic->priv_flags |= ENIC_SRIOV_ENABLED; | |
3f192795 | 2376 | num_pps = enic->num_vfs; |
8749b427 RP |
2377 | } |
2378 | } | |
2379 | ||
2380 | #endif | |
3f192795 RP |
2381 | /* Allocate structure for port profiles */ |
2382 | enic->pp = kzalloc(num_pps * sizeof(*enic->pp), GFP_KERNEL); | |
2383 | if (!enic->pp) { | |
2384 | pr_err("port profile alloc failed, aborting\n"); | |
2385 | err = -ENOMEM; | |
2386 | goto err_out_disable_sriov; | |
2387 | } | |
2388 | ||
01f2e4ea SF |
2389 | /* Issue device open to get device in known state |
2390 | */ | |
2391 | ||
2392 | err = enic_dev_open(enic); | |
2393 | if (err) { | |
a7a79deb | 2394 | dev_err(dev, "vNIC dev open failed, aborting\n"); |
3f192795 | 2395 | goto err_out_free_pp; |
01f2e4ea SF |
2396 | } |
2397 | ||
69161425 VK |
2398 | /* Setup devcmd lock |
2399 | */ | |
2400 | ||
2401 | spin_lock_init(&enic->devcmd_lock); | |
2402 | ||
2403 | /* | |
2404 | * Set ingress vlan rewrite mode before vnic initialization | |
2405 | */ | |
2406 | ||
2407 | err = enic_dev_set_ig_vlan_rewrite_mode(enic); | |
2408 | if (err) { | |
2409 | dev_err(dev, | |
2410 | "Failed to set ingress vlan rewrite mode, aborting.\n"); | |
2411 | goto err_out_dev_close; | |
2412 | } | |
2413 | ||
01f2e4ea SF |
2414 | /* Issue device init to initialize the vnic-to-switch link. |
2415 | * We'll start with carrier off and wait for link UP | |
2416 | * notification later to turn on carrier. We don't need | |
2417 | * to wait here for the vnic-to-switch link initialization | |
2418 | * to complete; link UP notification is the indication that | |
2419 | * the process is complete. | |
2420 | */ | |
2421 | ||
2422 | netif_carrier_off(netdev); | |
2423 | ||
a7a79deb VK |
2424 | /* Do not call dev_init for a dynamic vnic. |
2425 | * For a dynamic vnic, init_prov_info will be | |
2426 | * called later by an upper layer. | |
2427 | */ | |
2428 | ||
f8bd9091 SF |
2429 | if (!enic_is_dynamic(enic)) { |
2430 | err = vnic_dev_init(enic->vdev, 0); | |
2431 | if (err) { | |
a7a79deb | 2432 | dev_err(dev, "vNIC dev init failed, aborting\n"); |
f8bd9091 SF |
2433 | goto err_out_dev_close; |
2434 | } | |
01f2e4ea SF |
2435 | } |
2436 | ||
6fdfa970 | 2437 | err = enic_dev_init(enic); |
01f2e4ea | 2438 | if (err) { |
a7a79deb | 2439 | dev_err(dev, "Device initialization failed, aborting\n"); |
01f2e4ea SF |
2440 | goto err_out_dev_close; |
2441 | } | |
2442 | ||
383ab92f | 2443 | /* Setup notification timer, HW reset task, and wq locks |
01f2e4ea SF |
2444 | */ |
2445 | ||
2446 | init_timer(&enic->notify_timer); | |
2447 | enic->notify_timer.function = enic_notify_timer; | |
2448 | enic->notify_timer.data = (unsigned long)enic; | |
2449 | ||
2450 | INIT_WORK(&enic->reset, enic_reset); | |
c97c894d | 2451 | INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work); |
01f2e4ea SF |
2452 | |
2453 | for (i = 0; i < enic->wq_count; i++) | |
2454 | spin_lock_init(&enic->wq_lock[i]); | |
2455 | ||
01f2e4ea SF |
2456 | /* Register net device |
2457 | */ | |
2458 | ||
2459 | enic->port_mtu = enic->config.mtu; | |
2460 | (void)enic_change_mtu(netdev, enic->port_mtu); | |
2461 | ||
8749b427 RP |
2462 | #ifdef CONFIG_PCI_IOV |
2463 | if (enic_is_dynamic(enic) && pdev->is_virtfn && | |
2464 | is_zero_ether_addr(enic->mac_addr)) | |
2465 | random_ether_addr(enic->mac_addr); | |
2466 | #endif | |
2467 | ||
01f2e4ea SF |
2468 | err = enic_set_mac_addr(netdev, enic->mac_addr); |
2469 | if (err) { | |
a7a79deb | 2470 | dev_err(dev, "Invalid MAC address, aborting\n"); |
6fdfa970 | 2471 | goto err_out_dev_deinit; |
01f2e4ea SF |
2472 | } |
2473 | ||
7c844599 SF |
2474 | enic->tx_coalesce_usecs = enic->config.intr_timer_usec; |
2475 | enic->rx_coalesce_usecs = enic->tx_coalesce_usecs; | |
2476 | ||
f8bd9091 SF |
2477 | if (enic_is_dynamic(enic)) |
2478 | netdev->netdev_ops = &enic_netdev_dynamic_ops; | |
2479 | else | |
2480 | netdev->netdev_ops = &enic_netdev_ops; | |
2481 | ||
01f2e4ea SF |
2482 | netdev->watchdog_timeo = 2 * HZ; |
2483 | netdev->ethtool_ops = &enic_ethtool_ops; | |
01f2e4ea | 2484 | |
73c1ea9b | 2485 | netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; |
1825aca6 VK |
2486 | if (ENIC_SETTING(enic, LOOP)) { |
2487 | netdev->features &= ~NETIF_F_HW_VLAN_TX; | |
2488 | enic->loop_enable = 1; | |
2489 | enic->loop_tag = enic->config.loop_tag; | |
2490 | dev_info(dev, "loopback tag=0x%04x\n", enic->loop_tag); | |
2491 | } | |
01f2e4ea | 2492 | if (ENIC_SETTING(enic, TXCSUM)) |
5ec8f9b8 | 2493 | netdev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM; |
01f2e4ea | 2494 | if (ENIC_SETTING(enic, TSO)) |
5ec8f9b8 | 2495 | netdev->hw_features |= NETIF_F_TSO | |
01f2e4ea | 2496 | NETIF_F_TSO6 | NETIF_F_TSO_ECN; |
5ec8f9b8 MM |
2497 | if (ENIC_SETTING(enic, RXCSUM)) |
2498 | netdev->hw_features |= NETIF_F_RXCSUM; | |
2499 | ||
2500 | netdev->features |= netdev->hw_features; | |
2501 | ||
01f2e4ea SF |
2502 | if (using_dac) |
2503 | netdev->features |= NETIF_F_HIGHDMA; | |
2504 | ||
01789349 JP |
2505 | netdev->priv_flags |= IFF_UNICAST_FLT; |
2506 | ||
01f2e4ea SF |
2507 | err = register_netdev(netdev); |
2508 | if (err) { | |
a7a79deb | 2509 | dev_err(dev, "Cannot register net device, aborting\n"); |
6fdfa970 | 2510 | goto err_out_dev_deinit; |
01f2e4ea SF |
2511 | } |
2512 | ||
2513 | return 0; | |
2514 | ||
6fdfa970 SF |
2515 | err_out_dev_deinit: |
2516 | enic_dev_deinit(enic); | |
01f2e4ea SF |
2517 | err_out_dev_close: |
2518 | vnic_dev_close(enic->vdev); | |
3f192795 RP |
2519 | err_out_free_pp: |
2520 | kfree(enic->pp); | |
8749b427 RP |
2521 | err_out_disable_sriov: |
2522 | #ifdef CONFIG_PCI_IOV | |
2523 | if (enic_sriov_enabled(enic)) { | |
2524 | pci_disable_sriov(pdev); | |
2525 | enic->priv_flags &= ~ENIC_SRIOV_ENABLED; | |
2526 | } | |
01f2e4ea | 2527 | err_out_vnic_unregister: |
01f2e4ea | 2528 | vnic_dev_unregister(enic->vdev); |
8749b427 | 2529 | #endif |
01f2e4ea SF |
2530 | err_out_iounmap: |
2531 | enic_iounmap(enic); | |
2532 | err_out_release_regions: | |
2533 | pci_release_regions(pdev); | |
2534 | err_out_disable_device: | |
2535 | pci_disable_device(pdev); | |
2536 | err_out_free_netdev: | |
2537 | pci_set_drvdata(pdev, NULL); | |
2538 | free_netdev(netdev); | |
2539 | ||
2540 | return err; | |
2541 | } | |
2542 | ||
2543 | static void __devexit enic_remove(struct pci_dev *pdev) | |
2544 | { | |
2545 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2546 | ||
2547 | if (netdev) { | |
2548 | struct enic *enic = netdev_priv(netdev); | |
2549 | ||
23f333a2 | 2550 | cancel_work_sync(&enic->reset); |
c97c894d | 2551 | cancel_work_sync(&enic->change_mtu_work); |
01f2e4ea | 2552 | unregister_netdev(netdev); |
6fdfa970 | 2553 | enic_dev_deinit(enic); |
01f2e4ea | 2554 | vnic_dev_close(enic->vdev); |
8749b427 RP |
2555 | #ifdef CONFIG_PCI_IOV |
2556 | if (enic_sriov_enabled(enic)) { | |
2557 | pci_disable_sriov(pdev); | |
2558 | enic->priv_flags &= ~ENIC_SRIOV_ENABLED; | |
2559 | } | |
2560 | #endif | |
3f192795 | 2561 | kfree(enic->pp); |
01f2e4ea SF |
2562 | vnic_dev_unregister(enic->vdev); |
2563 | enic_iounmap(enic); | |
2564 | pci_release_regions(pdev); | |
2565 | pci_disable_device(pdev); | |
2566 | pci_set_drvdata(pdev, NULL); | |
2567 | free_netdev(netdev); | |
2568 | } | |
2569 | } | |
2570 | ||
2571 | static struct pci_driver enic_driver = { | |
2572 | .name = DRV_NAME, | |
2573 | .id_table = enic_id_table, | |
2574 | .probe = enic_probe, | |
2575 | .remove = __devexit_p(enic_remove), | |
2576 | }; | |
2577 | ||
2578 | static int __init enic_init_module(void) | |
2579 | { | |
a7a79deb | 2580 | pr_info("%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); |
01f2e4ea SF |
2581 | |
2582 | return pci_register_driver(&enic_driver); | |
2583 | } | |
2584 | ||
2585 | static void __exit enic_cleanup_module(void) | |
2586 | { | |
2587 | pci_unregister_driver(&enic_driver); | |
2588 | } | |
2589 | ||
2590 | module_init(enic_init_module); | |
2591 | module_exit(enic_cleanup_module); |