]>
Commit | Line | Data |
---|---|---|
4863dea3 SG |
1 | /* |
2 | * Copyright (C) 2015 Cavium, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License | |
6 | * as published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/pci.h> | |
12 | #include <linux/netdevice.h> | |
aa2e259b | 13 | #include <linux/if_vlan.h> |
4863dea3 SG |
14 | #include <linux/etherdevice.h> |
15 | #include <linux/ethtool.h> | |
16 | #include <linux/log2.h> | |
17 | #include <linux/prefetch.h> | |
18 | #include <linux/irq.h> | |
19 | ||
20 | #include "nic_reg.h" | |
21 | #include "nic.h" | |
22 | #include "nicvf_queues.h" | |
23 | #include "thunder_bgx.h" | |
24 | ||
25 | #define DRV_NAME "thunder-nicvf" | |
26 | #define DRV_VERSION "1.0" | |
27 | ||
28 | /* Supported devices */ | |
29 | static const struct pci_device_id nicvf_id_table[] = { | |
30 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_CAVIUM, | |
31 | PCI_DEVICE_ID_THUNDER_NIC_VF, | |
4e85777f | 32 | PCI_VENDOR_ID_CAVIUM, 0xA134) }, |
4863dea3 SG |
33 | { PCI_DEVICE_SUB(PCI_VENDOR_ID_CAVIUM, |
34 | PCI_DEVICE_ID_THUNDER_PASS1_NIC_VF, | |
35 | PCI_VENDOR_ID_CAVIUM, 0xA11E) }, | |
36 | { 0, } /* end of table */ | |
37 | }; | |
38 | ||
39 | MODULE_AUTHOR("Sunil Goutham"); | |
40 | MODULE_DESCRIPTION("Cavium Thunder NIC Virtual Function Driver"); | |
41 | MODULE_LICENSE("GPL v2"); | |
42 | MODULE_VERSION(DRV_VERSION); | |
43 | MODULE_DEVICE_TABLE(pci, nicvf_id_table); | |
44 | ||
45 | static int debug = 0x00; | |
46 | module_param(debug, int, 0644); | |
47 | MODULE_PARM_DESC(debug, "Debug message level bitmap"); | |
48 | ||
49 | static int cpi_alg = CPI_ALG_NONE; | |
50 | module_param(cpi_alg, int, S_IRUGO); | |
51 | MODULE_PARM_DESC(cpi_alg, | |
52 | "PFC algorithm (0=none, 1=VLAN, 2=VLAN16, 3=IP Diffserv)"); | |
53 | ||
92dc8769 SG |
54 | static inline u8 nicvf_netdev_qidx(struct nicvf *nic, u8 qidx) |
55 | { | |
56 | if (nic->sqs_mode) | |
57 | return qidx + ((nic->sqs_id + 1) * MAX_CMP_QUEUES_PER_QS); | |
58 | else | |
59 | return qidx; | |
60 | } | |
61 | ||
4863dea3 SG |
62 | static inline void nicvf_set_rx_frame_cnt(struct nicvf *nic, |
63 | struct sk_buff *skb) | |
64 | { | |
65 | if (skb->len <= 64) | |
66 | nic->drv_stats.rx_frames_64++; | |
67 | else if (skb->len <= 127) | |
68 | nic->drv_stats.rx_frames_127++; | |
69 | else if (skb->len <= 255) | |
70 | nic->drv_stats.rx_frames_255++; | |
71 | else if (skb->len <= 511) | |
72 | nic->drv_stats.rx_frames_511++; | |
73 | else if (skb->len <= 1023) | |
74 | nic->drv_stats.rx_frames_1023++; | |
75 | else if (skb->len <= 1518) | |
76 | nic->drv_stats.rx_frames_1518++; | |
77 | else | |
78 | nic->drv_stats.rx_frames_jumbo++; | |
79 | } | |
80 | ||
81 | /* The Cavium ThunderX network controller can *only* be found in SoCs | |
82 | * containing the ThunderX ARM64 CPU implementation. All accesses to the device | |
83 | * registers on this platform are implicitly strongly ordered with respect | |
84 | * to memory accesses. So writeq_relaxed() and readq_relaxed() are safe to use | |
85 | * with no memory barriers in this driver. The readq()/writeq() functions add | |
86 | * explicit ordering operation which in this case are redundant, and only | |
87 | * add overhead. | |
88 | */ | |
89 | ||
90 | /* Register read/write APIs */ | |
91 | void nicvf_reg_write(struct nicvf *nic, u64 offset, u64 val) | |
92 | { | |
93 | writeq_relaxed(val, nic->reg_base + offset); | |
94 | } | |
95 | ||
96 | u64 nicvf_reg_read(struct nicvf *nic, u64 offset) | |
97 | { | |
98 | return readq_relaxed(nic->reg_base + offset); | |
99 | } | |
100 | ||
101 | void nicvf_queue_reg_write(struct nicvf *nic, u64 offset, | |
102 | u64 qidx, u64 val) | |
103 | { | |
104 | void __iomem *addr = nic->reg_base + offset; | |
105 | ||
106 | writeq_relaxed(val, addr + (qidx << NIC_Q_NUM_SHIFT)); | |
107 | } | |
108 | ||
109 | u64 nicvf_queue_reg_read(struct nicvf *nic, u64 offset, u64 qidx) | |
110 | { | |
111 | void __iomem *addr = nic->reg_base + offset; | |
112 | ||
113 | return readq_relaxed(addr + (qidx << NIC_Q_NUM_SHIFT)); | |
114 | } | |
115 | ||
116 | /* VF -> PF mailbox communication */ | |
2cd2a196 AM |
117 | static void nicvf_write_to_mbx(struct nicvf *nic, union nic_mbx *mbx) |
118 | { | |
119 | u64 *msg = (u64 *)mbx; | |
120 | ||
121 | nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 0, msg[0]); | |
122 | nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 8, msg[1]); | |
123 | } | |
124 | ||
4863dea3 SG |
125 | int nicvf_send_msg_to_pf(struct nicvf *nic, union nic_mbx *mbx) |
126 | { | |
127 | int timeout = NIC_MBOX_MSG_TIMEOUT; | |
128 | int sleep = 10; | |
4863dea3 SG |
129 | |
130 | nic->pf_acked = false; | |
131 | nic->pf_nacked = false; | |
132 | ||
2cd2a196 | 133 | nicvf_write_to_mbx(nic, mbx); |
4863dea3 SG |
134 | |
135 | /* Wait for previous message to be acked, timeout 2sec */ | |
136 | while (!nic->pf_acked) { | |
137 | if (nic->pf_nacked) | |
138 | return -EINVAL; | |
139 | msleep(sleep); | |
140 | if (nic->pf_acked) | |
141 | break; | |
142 | timeout -= sleep; | |
143 | if (!timeout) { | |
144 | netdev_err(nic->netdev, | |
145 | "PF didn't ack to mbox msg %d from VF%d\n", | |
146 | (mbx->msg.msg & 0xFF), nic->vf_id); | |
147 | return -EBUSY; | |
148 | } | |
149 | } | |
150 | return 0; | |
151 | } | |
152 | ||
153 | /* Checks if VF is able to comminicate with PF | |
154 | * and also gets the VNIC number this VF is associated to. | |
155 | */ | |
156 | static int nicvf_check_pf_ready(struct nicvf *nic) | |
157 | { | |
2cd2a196 AM |
158 | union nic_mbx mbx = {}; |
159 | ||
160 | mbx.msg.msg = NIC_MBOX_MSG_READY; | |
6051cba7 SG |
161 | if (nicvf_send_msg_to_pf(nic, &mbx)) { |
162 | netdev_err(nic->netdev, | |
163 | "PF didn't respond to READY msg\n"); | |
164 | return 0; | |
4863dea3 | 165 | } |
6051cba7 | 166 | |
4863dea3 SG |
167 | return 1; |
168 | } | |
169 | ||
fd7ec062 AM |
170 | static void nicvf_read_bgx_stats(struct nicvf *nic, struct bgx_stats_msg *bgx) |
171 | { | |
172 | if (bgx->rx) | |
173 | nic->bgx_stats.rx_stats[bgx->idx] = bgx->stats; | |
174 | else | |
175 | nic->bgx_stats.tx_stats[bgx->idx] = bgx->stats; | |
176 | } | |
177 | ||
4863dea3 SG |
178 | static void nicvf_handle_mbx_intr(struct nicvf *nic) |
179 | { | |
180 | union nic_mbx mbx = {}; | |
181 | u64 *mbx_data; | |
182 | u64 mbx_addr; | |
183 | int i; | |
184 | ||
185 | mbx_addr = NIC_VF_PF_MAILBOX_0_1; | |
186 | mbx_data = (u64 *)&mbx; | |
187 | ||
188 | for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++) { | |
189 | *mbx_data = nicvf_reg_read(nic, mbx_addr); | |
190 | mbx_data++; | |
191 | mbx_addr += sizeof(u64); | |
192 | } | |
193 | ||
194 | netdev_dbg(nic->netdev, "Mbox message: msg: 0x%x\n", mbx.msg.msg); | |
195 | switch (mbx.msg.msg) { | |
196 | case NIC_MBOX_MSG_READY: | |
6051cba7 | 197 | nic->pf_acked = true; |
4863dea3 SG |
198 | nic->vf_id = mbx.nic_cfg.vf_id & 0x7F; |
199 | nic->tns_mode = mbx.nic_cfg.tns_mode & 0x7F; | |
200 | nic->node = mbx.nic_cfg.node_id; | |
bd049a90 PF |
201 | if (!nic->set_mac_pending) |
202 | ether_addr_copy(nic->netdev->dev_addr, | |
203 | mbx.nic_cfg.mac_addr); | |
92dc8769 | 204 | nic->sqs_mode = mbx.nic_cfg.sqs_mode; |
d77a2384 | 205 | nic->loopback_supported = mbx.nic_cfg.loopback_supported; |
4863dea3 SG |
206 | nic->link_up = false; |
207 | nic->duplex = 0; | |
208 | nic->speed = 0; | |
209 | break; | |
210 | case NIC_MBOX_MSG_ACK: | |
211 | nic->pf_acked = true; | |
212 | break; | |
213 | case NIC_MBOX_MSG_NACK: | |
214 | nic->pf_nacked = true; | |
215 | break; | |
216 | case NIC_MBOX_MSG_RSS_SIZE: | |
217 | nic->rss_info.rss_size = mbx.rss_size.ind_tbl_size; | |
218 | nic->pf_acked = true; | |
219 | break; | |
220 | case NIC_MBOX_MSG_BGX_STATS: | |
221 | nicvf_read_bgx_stats(nic, &mbx.bgx_stats); | |
222 | nic->pf_acked = true; | |
4863dea3 SG |
223 | break; |
224 | case NIC_MBOX_MSG_BGX_LINK_CHANGE: | |
225 | nic->pf_acked = true; | |
226 | nic->link_up = mbx.link_status.link_up; | |
227 | nic->duplex = mbx.link_status.duplex; | |
228 | nic->speed = mbx.link_status.speed; | |
229 | if (nic->link_up) { | |
230 | netdev_info(nic->netdev, "%s: Link is Up %d Mbps %s\n", | |
231 | nic->netdev->name, nic->speed, | |
232 | nic->duplex == DUPLEX_FULL ? | |
233 | "Full duplex" : "Half duplex"); | |
234 | netif_carrier_on(nic->netdev); | |
b49087dd | 235 | netif_tx_start_all_queues(nic->netdev); |
4863dea3 SG |
236 | } else { |
237 | netdev_info(nic->netdev, "%s: Link is Down\n", | |
238 | nic->netdev->name); | |
239 | netif_carrier_off(nic->netdev); | |
240 | netif_tx_stop_all_queues(nic->netdev); | |
241 | } | |
242 | break; | |
92dc8769 SG |
243 | case NIC_MBOX_MSG_ALLOC_SQS: |
244 | nic->sqs_count = mbx.sqs_alloc.qs_count; | |
245 | nic->pf_acked = true; | |
246 | break; | |
247 | case NIC_MBOX_MSG_SNICVF_PTR: | |
248 | /* Primary VF: make note of secondary VF's pointer | |
249 | * to be used while packet transmission. | |
250 | */ | |
251 | nic->snicvf[mbx.nicvf.sqs_id] = | |
252 | (struct nicvf *)mbx.nicvf.nicvf; | |
253 | nic->pf_acked = true; | |
254 | break; | |
255 | case NIC_MBOX_MSG_PNICVF_PTR: | |
256 | /* Secondary VF/Qset: make note of primary VF's pointer | |
257 | * to be used while packet reception, to handover packet | |
258 | * to primary VF's netdev. | |
259 | */ | |
260 | nic->pnicvf = (struct nicvf *)mbx.nicvf.nicvf; | |
261 | nic->pf_acked = true; | |
262 | break; | |
4863dea3 SG |
263 | default: |
264 | netdev_err(nic->netdev, | |
265 | "Invalid message from PF, msg 0x%x\n", mbx.msg.msg); | |
266 | break; | |
267 | } | |
268 | nicvf_clear_intr(nic, NICVF_INTR_MBOX, 0); | |
269 | } | |
270 | ||
271 | static int nicvf_hw_set_mac_addr(struct nicvf *nic, struct net_device *netdev) | |
272 | { | |
273 | union nic_mbx mbx = {}; | |
4863dea3 SG |
274 | |
275 | mbx.mac.msg = NIC_MBOX_MSG_SET_MAC; | |
276 | mbx.mac.vf_id = nic->vf_id; | |
e610cb32 | 277 | ether_addr_copy(mbx.mac.mac_addr, netdev->dev_addr); |
4863dea3 SG |
278 | |
279 | return nicvf_send_msg_to_pf(nic, &mbx); | |
280 | } | |
281 | ||
fd7ec062 | 282 | static void nicvf_config_cpi(struct nicvf *nic) |
4863dea3 SG |
283 | { |
284 | union nic_mbx mbx = {}; | |
285 | ||
286 | mbx.cpi_cfg.msg = NIC_MBOX_MSG_CPI_CFG; | |
287 | mbx.cpi_cfg.vf_id = nic->vf_id; | |
288 | mbx.cpi_cfg.cpi_alg = nic->cpi_alg; | |
289 | mbx.cpi_cfg.rq_cnt = nic->qs->rq_cnt; | |
290 | ||
291 | nicvf_send_msg_to_pf(nic, &mbx); | |
292 | } | |
293 | ||
fd7ec062 | 294 | static void nicvf_get_rss_size(struct nicvf *nic) |
4863dea3 SG |
295 | { |
296 | union nic_mbx mbx = {}; | |
297 | ||
298 | mbx.rss_size.msg = NIC_MBOX_MSG_RSS_SIZE; | |
299 | mbx.rss_size.vf_id = nic->vf_id; | |
300 | nicvf_send_msg_to_pf(nic, &mbx); | |
301 | } | |
302 | ||
303 | void nicvf_config_rss(struct nicvf *nic) | |
304 | { | |
305 | union nic_mbx mbx = {}; | |
306 | struct nicvf_rss_info *rss = &nic->rss_info; | |
307 | int ind_tbl_len = rss->rss_size; | |
308 | int i, nextq = 0; | |
309 | ||
310 | mbx.rss_cfg.vf_id = nic->vf_id; | |
311 | mbx.rss_cfg.hash_bits = rss->hash_bits; | |
312 | while (ind_tbl_len) { | |
313 | mbx.rss_cfg.tbl_offset = nextq; | |
314 | mbx.rss_cfg.tbl_len = min(ind_tbl_len, | |
315 | RSS_IND_TBL_LEN_PER_MBX_MSG); | |
316 | mbx.rss_cfg.msg = mbx.rss_cfg.tbl_offset ? | |
317 | NIC_MBOX_MSG_RSS_CFG_CONT : NIC_MBOX_MSG_RSS_CFG; | |
318 | ||
319 | for (i = 0; i < mbx.rss_cfg.tbl_len; i++) | |
320 | mbx.rss_cfg.ind_tbl[i] = rss->ind_tbl[nextq++]; | |
321 | ||
322 | nicvf_send_msg_to_pf(nic, &mbx); | |
323 | ||
324 | ind_tbl_len -= mbx.rss_cfg.tbl_len; | |
325 | } | |
326 | } | |
327 | ||
328 | void nicvf_set_rss_key(struct nicvf *nic) | |
329 | { | |
330 | struct nicvf_rss_info *rss = &nic->rss_info; | |
331 | u64 key_addr = NIC_VNIC_RSS_KEY_0_4; | |
332 | int idx; | |
333 | ||
334 | for (idx = 0; idx < RSS_HASH_KEY_SIZE; idx++) { | |
335 | nicvf_reg_write(nic, key_addr, rss->key[idx]); | |
336 | key_addr += sizeof(u64); | |
337 | } | |
338 | } | |
339 | ||
340 | static int nicvf_rss_init(struct nicvf *nic) | |
341 | { | |
342 | struct nicvf_rss_info *rss = &nic->rss_info; | |
343 | int idx; | |
344 | ||
345 | nicvf_get_rss_size(nic); | |
346 | ||
38bb5d4f | 347 | if (cpi_alg != CPI_ALG_NONE) { |
4863dea3 SG |
348 | rss->enable = false; |
349 | rss->hash_bits = 0; | |
350 | return 0; | |
351 | } | |
352 | ||
353 | rss->enable = true; | |
354 | ||
355 | /* Using the HW reset value for now */ | |
4a4f87d8 AM |
356 | rss->key[0] = 0xFEED0BADFEED0BADULL; |
357 | rss->key[1] = 0xFEED0BADFEED0BADULL; | |
358 | rss->key[2] = 0xFEED0BADFEED0BADULL; | |
359 | rss->key[3] = 0xFEED0BADFEED0BADULL; | |
360 | rss->key[4] = 0xFEED0BADFEED0BADULL; | |
4863dea3 SG |
361 | |
362 | nicvf_set_rss_key(nic); | |
363 | ||
364 | rss->cfg = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA; | |
365 | nicvf_reg_write(nic, NIC_VNIC_RSS_CFG, rss->cfg); | |
366 | ||
367 | rss->hash_bits = ilog2(rounddown_pow_of_two(rss->rss_size)); | |
368 | ||
369 | for (idx = 0; idx < rss->rss_size; idx++) | |
370 | rss->ind_tbl[idx] = ethtool_rxfh_indir_default(idx, | |
92dc8769 | 371 | nic->rx_queues); |
4863dea3 SG |
372 | nicvf_config_rss(nic); |
373 | return 1; | |
374 | } | |
375 | ||
92dc8769 SG |
376 | /* Request PF to allocate additional Qsets */ |
377 | static void nicvf_request_sqs(struct nicvf *nic) | |
378 | { | |
379 | union nic_mbx mbx = {}; | |
380 | int sqs; | |
381 | int sqs_count = nic->sqs_count; | |
382 | int rx_queues = 0, tx_queues = 0; | |
383 | ||
384 | /* Only primary VF should request */ | |
385 | if (nic->sqs_mode || !nic->sqs_count) | |
386 | return; | |
387 | ||
388 | mbx.sqs_alloc.msg = NIC_MBOX_MSG_ALLOC_SQS; | |
389 | mbx.sqs_alloc.vf_id = nic->vf_id; | |
390 | mbx.sqs_alloc.qs_count = nic->sqs_count; | |
391 | if (nicvf_send_msg_to_pf(nic, &mbx)) { | |
392 | /* No response from PF */ | |
393 | nic->sqs_count = 0; | |
394 | return; | |
395 | } | |
396 | ||
397 | /* Return if no Secondary Qsets available */ | |
398 | if (!nic->sqs_count) | |
399 | return; | |
400 | ||
401 | if (nic->rx_queues > MAX_RCV_QUEUES_PER_QS) | |
402 | rx_queues = nic->rx_queues - MAX_RCV_QUEUES_PER_QS; | |
403 | if (nic->tx_queues > MAX_SND_QUEUES_PER_QS) | |
404 | tx_queues = nic->tx_queues - MAX_SND_QUEUES_PER_QS; | |
405 | ||
406 | /* Set no of Rx/Tx queues in each of the SQsets */ | |
407 | for (sqs = 0; sqs < nic->sqs_count; sqs++) { | |
408 | mbx.nicvf.msg = NIC_MBOX_MSG_SNICVF_PTR; | |
409 | mbx.nicvf.vf_id = nic->vf_id; | |
410 | mbx.nicvf.sqs_id = sqs; | |
411 | nicvf_send_msg_to_pf(nic, &mbx); | |
412 | ||
413 | nic->snicvf[sqs]->sqs_id = sqs; | |
414 | if (rx_queues > MAX_RCV_QUEUES_PER_QS) { | |
415 | nic->snicvf[sqs]->qs->rq_cnt = MAX_RCV_QUEUES_PER_QS; | |
416 | rx_queues -= MAX_RCV_QUEUES_PER_QS; | |
417 | } else { | |
418 | nic->snicvf[sqs]->qs->rq_cnt = rx_queues; | |
419 | rx_queues = 0; | |
420 | } | |
421 | ||
422 | if (tx_queues > MAX_SND_QUEUES_PER_QS) { | |
423 | nic->snicvf[sqs]->qs->sq_cnt = MAX_SND_QUEUES_PER_QS; | |
424 | tx_queues -= MAX_SND_QUEUES_PER_QS; | |
425 | } else { | |
426 | nic->snicvf[sqs]->qs->sq_cnt = tx_queues; | |
427 | tx_queues = 0; | |
428 | } | |
429 | ||
430 | nic->snicvf[sqs]->qs->cq_cnt = | |
431 | max(nic->snicvf[sqs]->qs->rq_cnt, nic->snicvf[sqs]->qs->sq_cnt); | |
432 | ||
433 | /* Initialize secondary Qset's queues and its interrupts */ | |
434 | nicvf_open(nic->snicvf[sqs]->netdev); | |
435 | } | |
436 | ||
437 | /* Update stack with actual Rx/Tx queue count allocated */ | |
438 | if (sqs_count != nic->sqs_count) | |
439 | nicvf_set_real_num_queues(nic->netdev, | |
440 | nic->tx_queues, nic->rx_queues); | |
441 | } | |
442 | ||
443 | /* Send this Qset's nicvf pointer to PF. | |
444 | * PF inturn sends primary VF's nicvf struct to secondary Qsets/VFs | |
445 | * so that packets received by these Qsets can use primary VF's netdev | |
446 | */ | |
447 | static void nicvf_send_vf_struct(struct nicvf *nic) | |
448 | { | |
449 | union nic_mbx mbx = {}; | |
450 | ||
451 | mbx.nicvf.msg = NIC_MBOX_MSG_NICVF_PTR; | |
452 | mbx.nicvf.sqs_mode = nic->sqs_mode; | |
453 | mbx.nicvf.nicvf = (u64)nic; | |
454 | nicvf_send_msg_to_pf(nic, &mbx); | |
455 | } | |
456 | ||
457 | static void nicvf_get_primary_vf_struct(struct nicvf *nic) | |
458 | { | |
459 | union nic_mbx mbx = {}; | |
460 | ||
461 | mbx.nicvf.msg = NIC_MBOX_MSG_PNICVF_PTR; | |
462 | nicvf_send_msg_to_pf(nic, &mbx); | |
463 | } | |
464 | ||
4863dea3 SG |
465 | int nicvf_set_real_num_queues(struct net_device *netdev, |
466 | int tx_queues, int rx_queues) | |
467 | { | |
468 | int err = 0; | |
469 | ||
470 | err = netif_set_real_num_tx_queues(netdev, tx_queues); | |
471 | if (err) { | |
472 | netdev_err(netdev, | |
473 | "Failed to set no of Tx queues: %d\n", tx_queues); | |
474 | return err; | |
475 | } | |
476 | ||
477 | err = netif_set_real_num_rx_queues(netdev, rx_queues); | |
478 | if (err) | |
479 | netdev_err(netdev, | |
480 | "Failed to set no of Rx queues: %d\n", rx_queues); | |
481 | return err; | |
482 | } | |
483 | ||
484 | static int nicvf_init_resources(struct nicvf *nic) | |
485 | { | |
486 | int err; | |
2cd2a196 AM |
487 | union nic_mbx mbx = {}; |
488 | ||
489 | mbx.msg.msg = NIC_MBOX_MSG_CFG_DONE; | |
4863dea3 SG |
490 | |
491 | /* Enable Qset */ | |
492 | nicvf_qset_config(nic, true); | |
493 | ||
494 | /* Initialize queues and HW for data transfer */ | |
495 | err = nicvf_config_data_transfer(nic, true); | |
496 | if (err) { | |
497 | netdev_err(nic->netdev, | |
498 | "Failed to alloc/config VF's QSet resources\n"); | |
499 | return err; | |
500 | } | |
501 | ||
502 | /* Send VF config done msg to PF */ | |
2cd2a196 | 503 | nicvf_write_to_mbx(nic, &mbx); |
4863dea3 SG |
504 | |
505 | return 0; | |
506 | } | |
507 | ||
508 | static void nicvf_snd_pkt_handler(struct net_device *netdev, | |
509 | struct cmp_queue *cq, | |
510 | struct cqe_send_t *cqe_tx, int cqe_type) | |
511 | { | |
512 | struct sk_buff *skb = NULL; | |
513 | struct nicvf *nic = netdev_priv(netdev); | |
514 | struct snd_queue *sq; | |
515 | struct sq_hdr_subdesc *hdr; | |
516 | ||
517 | sq = &nic->qs->sq[cqe_tx->sq_idx]; | |
518 | ||
519 | hdr = (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, cqe_tx->sqe_ptr); | |
520 | if (hdr->subdesc_type != SQ_DESC_TYPE_HEADER) | |
521 | return; | |
522 | ||
523 | netdev_dbg(nic->netdev, | |
524 | "%s Qset #%d SQ #%d SQ ptr #%d subdesc count %d\n", | |
525 | __func__, cqe_tx->sq_qs, cqe_tx->sq_idx, | |
526 | cqe_tx->sqe_ptr, hdr->subdesc_cnt); | |
527 | ||
528 | nicvf_put_sq_desc(sq, hdr->subdesc_cnt + 1); | |
529 | nicvf_check_cqe_tx_errs(nic, cq, cqe_tx); | |
530 | skb = (struct sk_buff *)sq->skbuff[cqe_tx->sqe_ptr]; | |
531 | /* For TSO offloaded packets only one head SKB needs to be freed */ | |
532 | if (skb) { | |
533 | prefetch(skb); | |
534 | dev_consume_skb_any(skb); | |
143ceb0b | 535 | sq->skbuff[cqe_tx->sqe_ptr] = (u64)NULL; |
4863dea3 SG |
536 | } |
537 | } | |
538 | ||
38bb5d4f SG |
539 | static inline void nicvf_set_rxhash(struct net_device *netdev, |
540 | struct cqe_rx_t *cqe_rx, | |
541 | struct sk_buff *skb) | |
542 | { | |
543 | u8 hash_type; | |
544 | u32 hash; | |
545 | ||
546 | if (!(netdev->features & NETIF_F_RXHASH)) | |
547 | return; | |
548 | ||
549 | switch (cqe_rx->rss_alg) { | |
550 | case RSS_ALG_TCP_IP: | |
551 | case RSS_ALG_UDP_IP: | |
552 | hash_type = PKT_HASH_TYPE_L4; | |
553 | hash = cqe_rx->rss_tag; | |
554 | break; | |
555 | case RSS_ALG_IP: | |
556 | hash_type = PKT_HASH_TYPE_L3; | |
557 | hash = cqe_rx->rss_tag; | |
558 | break; | |
559 | default: | |
560 | hash_type = PKT_HASH_TYPE_NONE; | |
561 | hash = 0; | |
562 | } | |
563 | ||
564 | skb_set_hash(skb, hash, hash_type); | |
565 | } | |
566 | ||
4863dea3 SG |
567 | static void nicvf_rcv_pkt_handler(struct net_device *netdev, |
568 | struct napi_struct *napi, | |
569 | struct cmp_queue *cq, | |
570 | struct cqe_rx_t *cqe_rx, int cqe_type) | |
571 | { | |
572 | struct sk_buff *skb; | |
573 | struct nicvf *nic = netdev_priv(netdev); | |
574 | int err = 0; | |
92dc8769 SG |
575 | int rq_idx; |
576 | ||
577 | rq_idx = nicvf_netdev_qidx(nic, cqe_rx->rq_idx); | |
578 | ||
579 | if (nic->sqs_mode) { | |
580 | /* Use primary VF's 'nicvf' struct */ | |
581 | nic = nic->pnicvf; | |
582 | netdev = nic->netdev; | |
583 | } | |
4863dea3 SG |
584 | |
585 | /* Check for errors */ | |
586 | err = nicvf_check_cqe_rx_errs(nic, cq, cqe_rx); | |
587 | if (err && !cqe_rx->rb_cnt) | |
588 | return; | |
589 | ||
590 | skb = nicvf_get_rcv_skb(nic, cqe_rx); | |
591 | if (!skb) { | |
592 | netdev_dbg(nic->netdev, "Packet not received\n"); | |
593 | return; | |
594 | } | |
595 | ||
596 | if (netif_msg_pktdata(nic)) { | |
597 | netdev_info(nic->netdev, "%s: skb 0x%p, len=%d\n", netdev->name, | |
598 | skb, skb->len); | |
599 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 1, | |
600 | skb->data, skb->len, true); | |
601 | } | |
602 | ||
a2dc5ded SG |
603 | /* If error packet, drop it here */ |
604 | if (err) { | |
605 | dev_kfree_skb_any(skb); | |
606 | return; | |
607 | } | |
608 | ||
4863dea3 SG |
609 | nicvf_set_rx_frame_cnt(nic, skb); |
610 | ||
38bb5d4f SG |
611 | nicvf_set_rxhash(netdev, cqe_rx, skb); |
612 | ||
92dc8769 | 613 | skb_record_rx_queue(skb, rq_idx); |
4863dea3 SG |
614 | if (netdev->hw_features & NETIF_F_RXCSUM) { |
615 | /* HW by default verifies TCP/UDP/SCTP checksums */ | |
616 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
617 | } else { | |
618 | skb_checksum_none_assert(skb); | |
619 | } | |
620 | ||
621 | skb->protocol = eth_type_trans(skb, netdev); | |
622 | ||
aa2e259b SG |
623 | /* Check for stripped VLAN */ |
624 | if (cqe_rx->vlan_found && cqe_rx->vlan_stripped) | |
625 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), | |
626 | ntohs((__force __be16)cqe_rx->vlan_tci)); | |
627 | ||
4863dea3 SG |
628 | if (napi && (netdev->features & NETIF_F_GRO)) |
629 | napi_gro_receive(napi, skb); | |
630 | else | |
631 | netif_receive_skb(skb); | |
632 | } | |
633 | ||
634 | static int nicvf_cq_intr_handler(struct net_device *netdev, u8 cq_idx, | |
635 | struct napi_struct *napi, int budget) | |
636 | { | |
74840b83 | 637 | int processed_cqe, work_done = 0, tx_done = 0; |
4863dea3 SG |
638 | int cqe_count, cqe_head; |
639 | struct nicvf *nic = netdev_priv(netdev); | |
640 | struct queue_set *qs = nic->qs; | |
641 | struct cmp_queue *cq = &qs->cq[cq_idx]; | |
642 | struct cqe_rx_t *cq_desc; | |
74840b83 | 643 | struct netdev_queue *txq; |
4863dea3 SG |
644 | |
645 | spin_lock_bh(&cq->lock); | |
646 | loop: | |
647 | processed_cqe = 0; | |
648 | /* Get no of valid CQ entries to process */ | |
649 | cqe_count = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS, cq_idx); | |
650 | cqe_count &= CQ_CQE_COUNT; | |
651 | if (!cqe_count) | |
652 | goto done; | |
653 | ||
654 | /* Get head of the valid CQ entries */ | |
655 | cqe_head = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_HEAD, cq_idx) >> 9; | |
656 | cqe_head &= 0xFFFF; | |
657 | ||
74840b83 SG |
658 | netdev_dbg(nic->netdev, "%s CQ%d cqe_count %d cqe_head %d\n", |
659 | __func__, cq_idx, cqe_count, cqe_head); | |
4863dea3 SG |
660 | while (processed_cqe < cqe_count) { |
661 | /* Get the CQ descriptor */ | |
662 | cq_desc = (struct cqe_rx_t *)GET_CQ_DESC(cq, cqe_head); | |
663 | cqe_head++; | |
664 | cqe_head &= (cq->dmem.q_len - 1); | |
665 | /* Initiate prefetch for next descriptor */ | |
666 | prefetch((struct cqe_rx_t *)GET_CQ_DESC(cq, cqe_head)); | |
667 | ||
668 | if ((work_done >= budget) && napi && | |
669 | (cq_desc->cqe_type != CQE_TYPE_SEND)) { | |
670 | break; | |
671 | } | |
672 | ||
74840b83 SG |
673 | netdev_dbg(nic->netdev, "CQ%d cq_desc->cqe_type %d\n", |
674 | cq_idx, cq_desc->cqe_type); | |
4863dea3 SG |
675 | switch (cq_desc->cqe_type) { |
676 | case CQE_TYPE_RX: | |
677 | nicvf_rcv_pkt_handler(netdev, napi, cq, | |
678 | cq_desc, CQE_TYPE_RX); | |
679 | work_done++; | |
680 | break; | |
681 | case CQE_TYPE_SEND: | |
682 | nicvf_snd_pkt_handler(netdev, cq, | |
683 | (void *)cq_desc, CQE_TYPE_SEND); | |
74840b83 | 684 | tx_done++; |
4863dea3 SG |
685 | break; |
686 | case CQE_TYPE_INVALID: | |
687 | case CQE_TYPE_RX_SPLIT: | |
688 | case CQE_TYPE_RX_TCP: | |
689 | case CQE_TYPE_SEND_PTP: | |
690 | /* Ignore for now */ | |
691 | break; | |
692 | } | |
693 | processed_cqe++; | |
694 | } | |
74840b83 SG |
695 | netdev_dbg(nic->netdev, |
696 | "%s CQ%d processed_cqe %d work_done %d budget %d\n", | |
697 | __func__, cq_idx, processed_cqe, work_done, budget); | |
4863dea3 SG |
698 | |
699 | /* Ring doorbell to inform H/W to reuse processed CQEs */ | |
700 | nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_DOOR, | |
701 | cq_idx, processed_cqe); | |
702 | ||
703 | if ((work_done < budget) && napi) | |
704 | goto loop; | |
705 | ||
706 | done: | |
74840b83 SG |
707 | /* Wakeup TXQ if its stopped earlier due to SQ full */ |
708 | if (tx_done) { | |
92dc8769 SG |
709 | netdev = nic->pnicvf->netdev; |
710 | txq = netdev_get_tx_queue(netdev, | |
711 | nicvf_netdev_qidx(nic, cq_idx)); | |
712 | nic = nic->pnicvf; | |
713 | if (netif_tx_queue_stopped(txq) && netif_carrier_ok(netdev)) { | |
b49087dd | 714 | netif_tx_start_queue(txq); |
74840b83 SG |
715 | nic->drv_stats.txq_wake++; |
716 | if (netif_msg_tx_err(nic)) | |
717 | netdev_warn(netdev, | |
718 | "%s: Transmit queue wakeup SQ%d\n", | |
719 | netdev->name, cq_idx); | |
720 | } | |
721 | } | |
722 | ||
4863dea3 SG |
723 | spin_unlock_bh(&cq->lock); |
724 | return work_done; | |
725 | } | |
726 | ||
727 | static int nicvf_poll(struct napi_struct *napi, int budget) | |
728 | { | |
729 | u64 cq_head; | |
730 | int work_done = 0; | |
731 | struct net_device *netdev = napi->dev; | |
732 | struct nicvf *nic = netdev_priv(netdev); | |
733 | struct nicvf_cq_poll *cq; | |
4863dea3 SG |
734 | |
735 | cq = container_of(napi, struct nicvf_cq_poll, napi); | |
736 | work_done = nicvf_cq_intr_handler(netdev, cq->cq_idx, napi, budget); | |
737 | ||
4863dea3 SG |
738 | if (work_done < budget) { |
739 | /* Slow packet rate, exit polling */ | |
740 | napi_complete(napi); | |
741 | /* Re-enable interrupts */ | |
742 | cq_head = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_HEAD, | |
743 | cq->cq_idx); | |
744 | nicvf_clear_intr(nic, NICVF_INTR_CQ, cq->cq_idx); | |
745 | nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_HEAD, | |
746 | cq->cq_idx, cq_head); | |
747 | nicvf_enable_intr(nic, NICVF_INTR_CQ, cq->cq_idx); | |
748 | } | |
749 | return work_done; | |
750 | } | |
751 | ||
752 | /* Qset error interrupt handler | |
753 | * | |
754 | * As of now only CQ errors are handled | |
755 | */ | |
fd7ec062 | 756 | static void nicvf_handle_qs_err(unsigned long data) |
4863dea3 SG |
757 | { |
758 | struct nicvf *nic = (struct nicvf *)data; | |
759 | struct queue_set *qs = nic->qs; | |
760 | int qidx; | |
761 | u64 status; | |
762 | ||
763 | netif_tx_disable(nic->netdev); | |
764 | ||
765 | /* Check if it is CQ err */ | |
766 | for (qidx = 0; qidx < qs->cq_cnt; qidx++) { | |
767 | status = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS, | |
768 | qidx); | |
769 | if (!(status & CQ_ERR_MASK)) | |
770 | continue; | |
771 | /* Process already queued CQEs and reconfig CQ */ | |
772 | nicvf_disable_intr(nic, NICVF_INTR_CQ, qidx); | |
773 | nicvf_sq_disable(nic, qidx); | |
774 | nicvf_cq_intr_handler(nic->netdev, qidx, NULL, 0); | |
775 | nicvf_cmp_queue_config(nic, qs, qidx, true); | |
776 | nicvf_sq_free_used_descs(nic->netdev, &qs->sq[qidx], qidx); | |
777 | nicvf_sq_enable(nic, &qs->sq[qidx], qidx); | |
778 | ||
779 | nicvf_enable_intr(nic, NICVF_INTR_CQ, qidx); | |
780 | } | |
781 | ||
782 | netif_tx_start_all_queues(nic->netdev); | |
783 | /* Re-enable Qset error interrupt */ | |
784 | nicvf_enable_intr(nic, NICVF_INTR_QS_ERR, 0); | |
785 | } | |
786 | ||
39ad6eea SG |
787 | static void nicvf_dump_intr_status(struct nicvf *nic) |
788 | { | |
789 | if (netif_msg_intr(nic)) | |
790 | netdev_info(nic->netdev, "%s: interrupt status 0x%llx\n", | |
791 | nic->netdev->name, nicvf_reg_read(nic, NIC_VF_INT)); | |
792 | } | |
793 | ||
4863dea3 SG |
794 | static irqreturn_t nicvf_misc_intr_handler(int irq, void *nicvf_irq) |
795 | { | |
796 | struct nicvf *nic = (struct nicvf *)nicvf_irq; | |
797 | u64 intr; | |
798 | ||
39ad6eea SG |
799 | nicvf_dump_intr_status(nic); |
800 | ||
4863dea3 SG |
801 | intr = nicvf_reg_read(nic, NIC_VF_INT); |
802 | /* Check for spurious interrupt */ | |
803 | if (!(intr & NICVF_INTR_MBOX_MASK)) | |
804 | return IRQ_HANDLED; | |
805 | ||
806 | nicvf_handle_mbx_intr(nic); | |
807 | ||
808 | return IRQ_HANDLED; | |
809 | } | |
810 | ||
39ad6eea SG |
811 | static irqreturn_t nicvf_intr_handler(int irq, void *cq_irq) |
812 | { | |
813 | struct nicvf_cq_poll *cq_poll = (struct nicvf_cq_poll *)cq_irq; | |
814 | struct nicvf *nic = cq_poll->nicvf; | |
815 | int qidx = cq_poll->cq_idx; | |
816 | ||
817 | nicvf_dump_intr_status(nic); | |
818 | ||
819 | /* Disable interrupts */ | |
820 | nicvf_disable_intr(nic, NICVF_INTR_CQ, qidx); | |
821 | ||
822 | /* Schedule NAPI */ | |
823 | napi_schedule(&cq_poll->napi); | |
824 | ||
825 | /* Clear interrupt */ | |
826 | nicvf_clear_intr(nic, NICVF_INTR_CQ, qidx); | |
827 | ||
828 | return IRQ_HANDLED; | |
829 | } | |
830 | ||
831 | static irqreturn_t nicvf_rbdr_intr_handler(int irq, void *nicvf_irq) | |
4863dea3 | 832 | { |
4863dea3 | 833 | struct nicvf *nic = (struct nicvf *)nicvf_irq; |
39ad6eea | 834 | u8 qidx; |
4863dea3 | 835 | |
4863dea3 | 836 | |
39ad6eea SG |
837 | nicvf_dump_intr_status(nic); |
838 | ||
839 | /* Disable RBDR interrupt and schedule softirq */ | |
840 | for (qidx = 0; qidx < nic->qs->rbdr_cnt; qidx++) { | |
841 | if (!nicvf_is_intr_enabled(nic, NICVF_INTR_RBDR, qidx)) | |
4863dea3 | 842 | continue; |
39ad6eea SG |
843 | nicvf_disable_intr(nic, NICVF_INTR_RBDR, qidx); |
844 | tasklet_hi_schedule(&nic->rbdr_task); | |
845 | /* Clear interrupt */ | |
846 | nicvf_clear_intr(nic, NICVF_INTR_RBDR, qidx); | |
847 | } | |
4863dea3 | 848 | |
39ad6eea SG |
849 | return IRQ_HANDLED; |
850 | } | |
4863dea3 | 851 | |
39ad6eea SG |
852 | static irqreturn_t nicvf_qs_err_intr_handler(int irq, void *nicvf_irq) |
853 | { | |
854 | struct nicvf *nic = (struct nicvf *)nicvf_irq; | |
4863dea3 | 855 | |
39ad6eea SG |
856 | nicvf_dump_intr_status(nic); |
857 | ||
858 | /* Disable Qset err interrupt and schedule softirq */ | |
859 | nicvf_disable_intr(nic, NICVF_INTR_QS_ERR, 0); | |
860 | tasklet_hi_schedule(&nic->qs_err_task); | |
861 | nicvf_clear_intr(nic, NICVF_INTR_QS_ERR, 0); | |
4863dea3 | 862 | |
4863dea3 SG |
863 | return IRQ_HANDLED; |
864 | } | |
865 | ||
866 | static int nicvf_enable_msix(struct nicvf *nic) | |
867 | { | |
868 | int ret, vec; | |
869 | ||
870 | nic->num_vec = NIC_VF_MSIX_VECTORS; | |
871 | ||
872 | for (vec = 0; vec < nic->num_vec; vec++) | |
873 | nic->msix_entries[vec].entry = vec; | |
874 | ||
875 | ret = pci_enable_msix(nic->pdev, nic->msix_entries, nic->num_vec); | |
876 | if (ret) { | |
877 | netdev_err(nic->netdev, | |
878 | "Req for #%d msix vectors failed\n", nic->num_vec); | |
879 | return 0; | |
880 | } | |
881 | nic->msix_enabled = 1; | |
882 | return 1; | |
883 | } | |
884 | ||
885 | static void nicvf_disable_msix(struct nicvf *nic) | |
886 | { | |
887 | if (nic->msix_enabled) { | |
888 | pci_disable_msix(nic->pdev); | |
889 | nic->msix_enabled = 0; | |
890 | nic->num_vec = 0; | |
891 | } | |
892 | } | |
893 | ||
894 | static int nicvf_register_interrupts(struct nicvf *nic) | |
895 | { | |
39ad6eea | 896 | int irq, ret = 0; |
4863dea3 SG |
897 | int vector; |
898 | ||
899 | for_each_cq_irq(irq) | |
900 | sprintf(nic->irq_name[irq], "NICVF%d CQ%d", | |
901 | nic->vf_id, irq); | |
902 | ||
903 | for_each_sq_irq(irq) | |
904 | sprintf(nic->irq_name[irq], "NICVF%d SQ%d", | |
905 | nic->vf_id, irq - NICVF_INTR_ID_SQ); | |
906 | ||
907 | for_each_rbdr_irq(irq) | |
908 | sprintf(nic->irq_name[irq], "NICVF%d RBDR%d", | |
909 | nic->vf_id, irq - NICVF_INTR_ID_RBDR); | |
910 | ||
39ad6eea SG |
911 | /* Register CQ interrupts */ |
912 | for (irq = 0; irq < nic->qs->cq_cnt; irq++) { | |
4863dea3 SG |
913 | vector = nic->msix_entries[irq].vector; |
914 | ret = request_irq(vector, nicvf_intr_handler, | |
39ad6eea | 915 | 0, nic->irq_name[irq], nic->napi[irq]); |
4863dea3 | 916 | if (ret) |
39ad6eea | 917 | goto err; |
4863dea3 SG |
918 | nic->irq_allocated[irq] = true; |
919 | } | |
920 | ||
39ad6eea SG |
921 | /* Register RBDR interrupt */ |
922 | for (irq = NICVF_INTR_ID_RBDR; | |
923 | irq < (NICVF_INTR_ID_RBDR + nic->qs->rbdr_cnt); irq++) { | |
4863dea3 | 924 | vector = nic->msix_entries[irq].vector; |
39ad6eea | 925 | ret = request_irq(vector, nicvf_rbdr_intr_handler, |
4863dea3 SG |
926 | 0, nic->irq_name[irq], nic); |
927 | if (ret) | |
39ad6eea | 928 | goto err; |
4863dea3 SG |
929 | nic->irq_allocated[irq] = true; |
930 | } | |
931 | ||
39ad6eea | 932 | /* Register QS error interrupt */ |
4863dea3 SG |
933 | sprintf(nic->irq_name[NICVF_INTR_ID_QS_ERR], |
934 | "NICVF%d Qset error", nic->vf_id); | |
39ad6eea SG |
935 | irq = NICVF_INTR_ID_QS_ERR; |
936 | ret = request_irq(nic->msix_entries[irq].vector, | |
937 | nicvf_qs_err_intr_handler, | |
938 | 0, nic->irq_name[irq], nic); | |
939 | if (!ret) | |
940 | nic->irq_allocated[irq] = true; | |
4863dea3 | 941 | |
39ad6eea SG |
942 | err: |
943 | if (ret) | |
944 | netdev_err(nic->netdev, "request_irq failed, vector %d\n", irq); | |
4863dea3 | 945 | |
39ad6eea | 946 | return ret; |
4863dea3 SG |
947 | } |
948 | ||
949 | static void nicvf_unregister_interrupts(struct nicvf *nic) | |
950 | { | |
951 | int irq; | |
952 | ||
953 | /* Free registered interrupts */ | |
954 | for (irq = 0; irq < nic->num_vec; irq++) { | |
39ad6eea SG |
955 | if (!nic->irq_allocated[irq]) |
956 | continue; | |
957 | ||
958 | if (irq < NICVF_INTR_ID_SQ) | |
959 | free_irq(nic->msix_entries[irq].vector, nic->napi[irq]); | |
960 | else | |
4863dea3 | 961 | free_irq(nic->msix_entries[irq].vector, nic); |
39ad6eea | 962 | |
4863dea3 SG |
963 | nic->irq_allocated[irq] = false; |
964 | } | |
965 | ||
966 | /* Disable MSI-X */ | |
967 | nicvf_disable_msix(nic); | |
968 | } | |
969 | ||
970 | /* Initialize MSIX vectors and register MISC interrupt. | |
971 | * Send READY message to PF to check if its alive | |
972 | */ | |
973 | static int nicvf_register_misc_interrupt(struct nicvf *nic) | |
974 | { | |
975 | int ret = 0; | |
976 | int irq = NICVF_INTR_ID_MISC; | |
977 | ||
978 | /* Return if mailbox interrupt is already registered */ | |
979 | if (nic->msix_enabled) | |
980 | return 0; | |
981 | ||
982 | /* Enable MSI-X */ | |
983 | if (!nicvf_enable_msix(nic)) | |
984 | return 1; | |
985 | ||
986 | sprintf(nic->irq_name[irq], "%s Mbox", "NICVF"); | |
987 | /* Register Misc interrupt */ | |
988 | ret = request_irq(nic->msix_entries[irq].vector, | |
989 | nicvf_misc_intr_handler, 0, nic->irq_name[irq], nic); | |
990 | ||
991 | if (ret) | |
992 | return ret; | |
993 | nic->irq_allocated[irq] = true; | |
994 | ||
995 | /* Enable mailbox interrupt */ | |
996 | nicvf_enable_intr(nic, NICVF_INTR_MBOX, 0); | |
997 | ||
998 | /* Check if VF is able to communicate with PF */ | |
999 | if (!nicvf_check_pf_ready(nic)) { | |
1000 | nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0); | |
1001 | nicvf_unregister_interrupts(nic); | |
1002 | return 1; | |
1003 | } | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | static netdev_tx_t nicvf_xmit(struct sk_buff *skb, struct net_device *netdev) | |
1009 | { | |
1010 | struct nicvf *nic = netdev_priv(netdev); | |
1011 | int qid = skb_get_queue_mapping(skb); | |
1012 | struct netdev_queue *txq = netdev_get_tx_queue(netdev, qid); | |
1013 | ||
1014 | /* Check for minimum packet length */ | |
1015 | if (skb->len <= ETH_HLEN) { | |
1016 | dev_kfree_skb(skb); | |
1017 | return NETDEV_TX_OK; | |
1018 | } | |
1019 | ||
b49087dd | 1020 | if (!netif_tx_queue_stopped(txq) && !nicvf_sq_append_skb(nic, skb)) { |
4863dea3 | 1021 | netif_tx_stop_queue(txq); |
74840b83 | 1022 | nic->drv_stats.txq_stop++; |
4863dea3 SG |
1023 | if (netif_msg_tx_err(nic)) |
1024 | netdev_warn(netdev, | |
1025 | "%s: Transmit ring full, stopping SQ%d\n", | |
1026 | netdev->name, qid); | |
4863dea3 SG |
1027 | return NETDEV_TX_BUSY; |
1028 | } | |
1029 | ||
1030 | return NETDEV_TX_OK; | |
1031 | } | |
1032 | ||
39ad6eea SG |
1033 | static inline void nicvf_free_cq_poll(struct nicvf *nic) |
1034 | { | |
1035 | struct nicvf_cq_poll *cq_poll; | |
1036 | int qidx; | |
1037 | ||
1038 | for (qidx = 0; qidx < nic->qs->cq_cnt; qidx++) { | |
1039 | cq_poll = nic->napi[qidx]; | |
1040 | if (!cq_poll) | |
1041 | continue; | |
1042 | nic->napi[qidx] = NULL; | |
1043 | kfree(cq_poll); | |
1044 | } | |
1045 | } | |
1046 | ||
4863dea3 SG |
1047 | int nicvf_stop(struct net_device *netdev) |
1048 | { | |
1049 | int irq, qidx; | |
1050 | struct nicvf *nic = netdev_priv(netdev); | |
1051 | struct queue_set *qs = nic->qs; | |
1052 | struct nicvf_cq_poll *cq_poll = NULL; | |
1053 | union nic_mbx mbx = {}; | |
1054 | ||
1055 | mbx.msg.msg = NIC_MBOX_MSG_SHUTDOWN; | |
1056 | nicvf_send_msg_to_pf(nic, &mbx); | |
1057 | ||
1058 | netif_carrier_off(netdev); | |
92dc8769 SG |
1059 | netif_tx_stop_all_queues(nic->netdev); |
1060 | ||
1061 | /* Teardown secondary qsets first */ | |
1062 | if (!nic->sqs_mode) { | |
1063 | for (qidx = 0; qidx < nic->sqs_count; qidx++) { | |
1064 | if (!nic->snicvf[qidx]) | |
1065 | continue; | |
1066 | nicvf_stop(nic->snicvf[qidx]->netdev); | |
1067 | nic->snicvf[qidx] = NULL; | |
1068 | } | |
1069 | } | |
4863dea3 SG |
1070 | |
1071 | /* Disable RBDR & QS error interrupts */ | |
1072 | for (qidx = 0; qidx < qs->rbdr_cnt; qidx++) { | |
1073 | nicvf_disable_intr(nic, NICVF_INTR_RBDR, qidx); | |
1074 | nicvf_clear_intr(nic, NICVF_INTR_RBDR, qidx); | |
1075 | } | |
1076 | nicvf_disable_intr(nic, NICVF_INTR_QS_ERR, 0); | |
1077 | nicvf_clear_intr(nic, NICVF_INTR_QS_ERR, 0); | |
1078 | ||
1079 | /* Wait for pending IRQ handlers to finish */ | |
1080 | for (irq = 0; irq < nic->num_vec; irq++) | |
1081 | synchronize_irq(nic->msix_entries[irq].vector); | |
1082 | ||
1083 | tasklet_kill(&nic->rbdr_task); | |
1084 | tasklet_kill(&nic->qs_err_task); | |
1085 | if (nic->rb_work_scheduled) | |
1086 | cancel_delayed_work_sync(&nic->rbdr_work); | |
1087 | ||
1088 | for (qidx = 0; qidx < nic->qs->cq_cnt; qidx++) { | |
1089 | cq_poll = nic->napi[qidx]; | |
1090 | if (!cq_poll) | |
1091 | continue; | |
4863dea3 SG |
1092 | napi_synchronize(&cq_poll->napi); |
1093 | /* CQ intr is enabled while napi_complete, | |
1094 | * so disable it now | |
1095 | */ | |
1096 | nicvf_disable_intr(nic, NICVF_INTR_CQ, qidx); | |
1097 | nicvf_clear_intr(nic, NICVF_INTR_CQ, qidx); | |
1098 | napi_disable(&cq_poll->napi); | |
1099 | netif_napi_del(&cq_poll->napi); | |
4863dea3 SG |
1100 | } |
1101 | ||
b49087dd SG |
1102 | netif_tx_disable(netdev); |
1103 | ||
4863dea3 SG |
1104 | /* Free resources */ |
1105 | nicvf_config_data_transfer(nic, false); | |
1106 | ||
1107 | /* Disable HW Qset */ | |
1108 | nicvf_qset_config(nic, false); | |
1109 | ||
1110 | /* disable mailbox interrupt */ | |
1111 | nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0); | |
1112 | ||
1113 | nicvf_unregister_interrupts(nic); | |
1114 | ||
39ad6eea SG |
1115 | nicvf_free_cq_poll(nic); |
1116 | ||
92dc8769 SG |
1117 | /* Clear multiqset info */ |
1118 | nic->pnicvf = nic; | |
1119 | nic->sqs_count = 0; | |
1120 | ||
4863dea3 SG |
1121 | return 0; |
1122 | } | |
1123 | ||
1124 | int nicvf_open(struct net_device *netdev) | |
1125 | { | |
1126 | int err, qidx; | |
1127 | struct nicvf *nic = netdev_priv(netdev); | |
1128 | struct queue_set *qs = nic->qs; | |
1129 | struct nicvf_cq_poll *cq_poll = NULL; | |
1130 | ||
1131 | nic->mtu = netdev->mtu; | |
1132 | ||
1133 | netif_carrier_off(netdev); | |
1134 | ||
1135 | err = nicvf_register_misc_interrupt(nic); | |
1136 | if (err) | |
1137 | return err; | |
1138 | ||
1139 | /* Register NAPI handler for processing CQEs */ | |
1140 | for (qidx = 0; qidx < qs->cq_cnt; qidx++) { | |
1141 | cq_poll = kzalloc(sizeof(*cq_poll), GFP_KERNEL); | |
1142 | if (!cq_poll) { | |
1143 | err = -ENOMEM; | |
1144 | goto napi_del; | |
1145 | } | |
1146 | cq_poll->cq_idx = qidx; | |
39ad6eea | 1147 | cq_poll->nicvf = nic; |
4863dea3 SG |
1148 | netif_napi_add(netdev, &cq_poll->napi, nicvf_poll, |
1149 | NAPI_POLL_WEIGHT); | |
1150 | napi_enable(&cq_poll->napi); | |
1151 | nic->napi[qidx] = cq_poll; | |
1152 | } | |
1153 | ||
1154 | /* Check if we got MAC address from PF or else generate a radom MAC */ | |
1155 | if (is_zero_ether_addr(netdev->dev_addr)) { | |
1156 | eth_hw_addr_random(netdev); | |
1157 | nicvf_hw_set_mac_addr(nic, netdev); | |
1158 | } | |
1159 | ||
bd049a90 PF |
1160 | if (nic->set_mac_pending) { |
1161 | nic->set_mac_pending = false; | |
1162 | nicvf_hw_set_mac_addr(nic, netdev); | |
1163 | } | |
1164 | ||
4863dea3 SG |
1165 | /* Init tasklet for handling Qset err interrupt */ |
1166 | tasklet_init(&nic->qs_err_task, nicvf_handle_qs_err, | |
1167 | (unsigned long)nic); | |
1168 | ||
1169 | /* Init RBDR tasklet which will refill RBDR */ | |
1170 | tasklet_init(&nic->rbdr_task, nicvf_rbdr_task, | |
1171 | (unsigned long)nic); | |
1172 | INIT_DELAYED_WORK(&nic->rbdr_work, nicvf_rbdr_work); | |
1173 | ||
1174 | /* Configure CPI alorithm */ | |
1175 | nic->cpi_alg = cpi_alg; | |
92dc8769 SG |
1176 | if (!nic->sqs_mode) |
1177 | nicvf_config_cpi(nic); | |
1178 | ||
1179 | nicvf_request_sqs(nic); | |
1180 | if (nic->sqs_mode) | |
1181 | nicvf_get_primary_vf_struct(nic); | |
4863dea3 SG |
1182 | |
1183 | /* Configure receive side scaling */ | |
92dc8769 SG |
1184 | if (!nic->sqs_mode) |
1185 | nicvf_rss_init(nic); | |
4863dea3 SG |
1186 | |
1187 | err = nicvf_register_interrupts(nic); | |
1188 | if (err) | |
1189 | goto cleanup; | |
1190 | ||
1191 | /* Initialize the queues */ | |
1192 | err = nicvf_init_resources(nic); | |
1193 | if (err) | |
1194 | goto cleanup; | |
1195 | ||
1196 | /* Make sure queue initialization is written */ | |
1197 | wmb(); | |
1198 | ||
1199 | nicvf_reg_write(nic, NIC_VF_INT, -1); | |
1200 | /* Enable Qset err interrupt */ | |
1201 | nicvf_enable_intr(nic, NICVF_INTR_QS_ERR, 0); | |
1202 | ||
1203 | /* Enable completion queue interrupt */ | |
1204 | for (qidx = 0; qidx < qs->cq_cnt; qidx++) | |
1205 | nicvf_enable_intr(nic, NICVF_INTR_CQ, qidx); | |
1206 | ||
1207 | /* Enable RBDR threshold interrupt */ | |
1208 | for (qidx = 0; qidx < qs->rbdr_cnt; qidx++) | |
1209 | nicvf_enable_intr(nic, NICVF_INTR_RBDR, qidx); | |
1210 | ||
74840b83 SG |
1211 | nic->drv_stats.txq_stop = 0; |
1212 | nic->drv_stats.txq_wake = 0; | |
1213 | ||
4863dea3 SG |
1214 | netif_carrier_on(netdev); |
1215 | netif_tx_start_all_queues(netdev); | |
1216 | ||
1217 | return 0; | |
1218 | cleanup: | |
1219 | nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0); | |
1220 | nicvf_unregister_interrupts(nic); | |
39ad6eea SG |
1221 | tasklet_kill(&nic->qs_err_task); |
1222 | tasklet_kill(&nic->rbdr_task); | |
4863dea3 SG |
1223 | napi_del: |
1224 | for (qidx = 0; qidx < qs->cq_cnt; qidx++) { | |
1225 | cq_poll = nic->napi[qidx]; | |
1226 | if (!cq_poll) | |
1227 | continue; | |
1228 | napi_disable(&cq_poll->napi); | |
1229 | netif_napi_del(&cq_poll->napi); | |
4863dea3 | 1230 | } |
39ad6eea | 1231 | nicvf_free_cq_poll(nic); |
4863dea3 SG |
1232 | return err; |
1233 | } | |
1234 | ||
1235 | static int nicvf_update_hw_max_frs(struct nicvf *nic, int mtu) | |
1236 | { | |
1237 | union nic_mbx mbx = {}; | |
1238 | ||
1239 | mbx.frs.msg = NIC_MBOX_MSG_SET_MAX_FRS; | |
1240 | mbx.frs.max_frs = mtu; | |
1241 | mbx.frs.vf_id = nic->vf_id; | |
1242 | ||
1243 | return nicvf_send_msg_to_pf(nic, &mbx); | |
1244 | } | |
1245 | ||
1246 | static int nicvf_change_mtu(struct net_device *netdev, int new_mtu) | |
1247 | { | |
1248 | struct nicvf *nic = netdev_priv(netdev); | |
1249 | ||
1250 | if (new_mtu > NIC_HW_MAX_FRS) | |
1251 | return -EINVAL; | |
1252 | ||
1253 | if (new_mtu < NIC_HW_MIN_FRS) | |
1254 | return -EINVAL; | |
1255 | ||
1256 | if (nicvf_update_hw_max_frs(nic, new_mtu)) | |
1257 | return -EINVAL; | |
1258 | netdev->mtu = new_mtu; | |
1259 | nic->mtu = new_mtu; | |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | static int nicvf_set_mac_address(struct net_device *netdev, void *p) | |
1265 | { | |
1266 | struct sockaddr *addr = p; | |
1267 | struct nicvf *nic = netdev_priv(netdev); | |
1268 | ||
1269 | if (!is_valid_ether_addr(addr->sa_data)) | |
1270 | return -EADDRNOTAVAIL; | |
1271 | ||
1272 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1273 | ||
bd049a90 | 1274 | if (nic->msix_enabled) { |
4863dea3 SG |
1275 | if (nicvf_hw_set_mac_addr(nic, netdev)) |
1276 | return -EBUSY; | |
bd049a90 PF |
1277 | } else { |
1278 | nic->set_mac_pending = true; | |
1279 | } | |
4863dea3 SG |
1280 | |
1281 | return 0; | |
1282 | } | |
1283 | ||
4863dea3 SG |
1284 | void nicvf_update_lmac_stats(struct nicvf *nic) |
1285 | { | |
1286 | int stat = 0; | |
1287 | union nic_mbx mbx = {}; | |
4863dea3 SG |
1288 | |
1289 | if (!netif_running(nic->netdev)) | |
1290 | return; | |
1291 | ||
1292 | mbx.bgx_stats.msg = NIC_MBOX_MSG_BGX_STATS; | |
1293 | mbx.bgx_stats.vf_id = nic->vf_id; | |
1294 | /* Rx stats */ | |
1295 | mbx.bgx_stats.rx = 1; | |
1296 | while (stat < BGX_RX_STATS_COUNT) { | |
4863dea3 | 1297 | mbx.bgx_stats.idx = stat; |
6051cba7 SG |
1298 | if (nicvf_send_msg_to_pf(nic, &mbx)) |
1299 | return; | |
4863dea3 SG |
1300 | stat++; |
1301 | } | |
1302 | ||
1303 | stat = 0; | |
1304 | ||
1305 | /* Tx stats */ | |
1306 | mbx.bgx_stats.rx = 0; | |
1307 | while (stat < BGX_TX_STATS_COUNT) { | |
4863dea3 | 1308 | mbx.bgx_stats.idx = stat; |
6051cba7 SG |
1309 | if (nicvf_send_msg_to_pf(nic, &mbx)) |
1310 | return; | |
4863dea3 SG |
1311 | stat++; |
1312 | } | |
1313 | } | |
1314 | ||
1315 | void nicvf_update_stats(struct nicvf *nic) | |
1316 | { | |
1317 | int qidx; | |
a2dc5ded | 1318 | struct nicvf_hw_stats *stats = &nic->hw_stats; |
4863dea3 SG |
1319 | struct nicvf_drv_stats *drv_stats = &nic->drv_stats; |
1320 | struct queue_set *qs = nic->qs; | |
1321 | ||
1322 | #define GET_RX_STATS(reg) \ | |
1323 | nicvf_reg_read(nic, NIC_VNIC_RX_STAT_0_13 | (reg << 3)) | |
1324 | #define GET_TX_STATS(reg) \ | |
1325 | nicvf_reg_read(nic, NIC_VNIC_TX_STAT_0_4 | (reg << 3)) | |
1326 | ||
a2dc5ded SG |
1327 | stats->rx_bytes = GET_RX_STATS(RX_OCTS); |
1328 | stats->rx_ucast_frames = GET_RX_STATS(RX_UCAST); | |
1329 | stats->rx_bcast_frames = GET_RX_STATS(RX_BCAST); | |
1330 | stats->rx_mcast_frames = GET_RX_STATS(RX_MCAST); | |
4863dea3 SG |
1331 | stats->rx_fcs_errors = GET_RX_STATS(RX_FCS); |
1332 | stats->rx_l2_errors = GET_RX_STATS(RX_L2ERR); | |
1333 | stats->rx_drop_red = GET_RX_STATS(RX_RED); | |
a2dc5ded | 1334 | stats->rx_drop_red_bytes = GET_RX_STATS(RX_RED_OCTS); |
4863dea3 | 1335 | stats->rx_drop_overrun = GET_RX_STATS(RX_ORUN); |
a2dc5ded | 1336 | stats->rx_drop_overrun_bytes = GET_RX_STATS(RX_ORUN_OCTS); |
4863dea3 SG |
1337 | stats->rx_drop_bcast = GET_RX_STATS(RX_DRP_BCAST); |
1338 | stats->rx_drop_mcast = GET_RX_STATS(RX_DRP_MCAST); | |
1339 | stats->rx_drop_l3_bcast = GET_RX_STATS(RX_DRP_L3BCAST); | |
1340 | stats->rx_drop_l3_mcast = GET_RX_STATS(RX_DRP_L3MCAST); | |
1341 | ||
1342 | stats->tx_bytes_ok = GET_TX_STATS(TX_OCTS); | |
1343 | stats->tx_ucast_frames_ok = GET_TX_STATS(TX_UCAST); | |
1344 | stats->tx_bcast_frames_ok = GET_TX_STATS(TX_BCAST); | |
1345 | stats->tx_mcast_frames_ok = GET_TX_STATS(TX_MCAST); | |
1346 | stats->tx_drops = GET_TX_STATS(TX_DROP); | |
1347 | ||
4863dea3 SG |
1348 | drv_stats->tx_frames_ok = stats->tx_ucast_frames_ok + |
1349 | stats->tx_bcast_frames_ok + | |
1350 | stats->tx_mcast_frames_ok; | |
1351 | drv_stats->rx_drops = stats->rx_drop_red + | |
1352 | stats->rx_drop_overrun; | |
1353 | drv_stats->tx_drops = stats->tx_drops; | |
1354 | ||
1355 | /* Update RQ and SQ stats */ | |
1356 | for (qidx = 0; qidx < qs->rq_cnt; qidx++) | |
1357 | nicvf_update_rq_stats(nic, qidx); | |
1358 | for (qidx = 0; qidx < qs->sq_cnt; qidx++) | |
1359 | nicvf_update_sq_stats(nic, qidx); | |
1360 | } | |
1361 | ||
fd7ec062 | 1362 | static struct rtnl_link_stats64 *nicvf_get_stats64(struct net_device *netdev, |
4863dea3 SG |
1363 | struct rtnl_link_stats64 *stats) |
1364 | { | |
1365 | struct nicvf *nic = netdev_priv(netdev); | |
a2dc5ded | 1366 | struct nicvf_hw_stats *hw_stats = &nic->hw_stats; |
4863dea3 SG |
1367 | struct nicvf_drv_stats *drv_stats = &nic->drv_stats; |
1368 | ||
1369 | nicvf_update_stats(nic); | |
1370 | ||
a2dc5ded | 1371 | stats->rx_bytes = hw_stats->rx_bytes; |
4863dea3 SG |
1372 | stats->rx_packets = drv_stats->rx_frames_ok; |
1373 | stats->rx_dropped = drv_stats->rx_drops; | |
a2dc5ded | 1374 | stats->multicast = hw_stats->rx_mcast_frames; |
4863dea3 SG |
1375 | |
1376 | stats->tx_bytes = hw_stats->tx_bytes_ok; | |
1377 | stats->tx_packets = drv_stats->tx_frames_ok; | |
1378 | stats->tx_dropped = drv_stats->tx_drops; | |
1379 | ||
1380 | return stats; | |
1381 | } | |
1382 | ||
1383 | static void nicvf_tx_timeout(struct net_device *dev) | |
1384 | { | |
1385 | struct nicvf *nic = netdev_priv(dev); | |
1386 | ||
1387 | if (netif_msg_tx_err(nic)) | |
1388 | netdev_warn(dev, "%s: Transmit timed out, resetting\n", | |
1389 | dev->name); | |
1390 | ||
1391 | schedule_work(&nic->reset_task); | |
1392 | } | |
1393 | ||
1394 | static void nicvf_reset_task(struct work_struct *work) | |
1395 | { | |
1396 | struct nicvf *nic; | |
1397 | ||
1398 | nic = container_of(work, struct nicvf, reset_task); | |
1399 | ||
1400 | if (!netif_running(nic->netdev)) | |
1401 | return; | |
1402 | ||
1403 | nicvf_stop(nic->netdev); | |
1404 | nicvf_open(nic->netdev); | |
1405 | nic->netdev->trans_start = jiffies; | |
1406 | } | |
1407 | ||
d77a2384 SG |
1408 | static int nicvf_config_loopback(struct nicvf *nic, |
1409 | netdev_features_t features) | |
1410 | { | |
1411 | union nic_mbx mbx = {}; | |
1412 | ||
1413 | mbx.lbk.msg = NIC_MBOX_MSG_LOOPBACK; | |
1414 | mbx.lbk.vf_id = nic->vf_id; | |
1415 | mbx.lbk.enable = (features & NETIF_F_LOOPBACK) != 0; | |
1416 | ||
1417 | return nicvf_send_msg_to_pf(nic, &mbx); | |
1418 | } | |
1419 | ||
1420 | static netdev_features_t nicvf_fix_features(struct net_device *netdev, | |
1421 | netdev_features_t features) | |
1422 | { | |
1423 | struct nicvf *nic = netdev_priv(netdev); | |
1424 | ||
1425 | if ((features & NETIF_F_LOOPBACK) && | |
1426 | netif_running(netdev) && !nic->loopback_supported) | |
1427 | features &= ~NETIF_F_LOOPBACK; | |
1428 | ||
1429 | return features; | |
1430 | } | |
1431 | ||
aa2e259b SG |
1432 | static int nicvf_set_features(struct net_device *netdev, |
1433 | netdev_features_t features) | |
1434 | { | |
1435 | struct nicvf *nic = netdev_priv(netdev); | |
1436 | netdev_features_t changed = features ^ netdev->features; | |
1437 | ||
1438 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) | |
1439 | nicvf_config_vlan_stripping(nic, features); | |
1440 | ||
d77a2384 SG |
1441 | if ((changed & NETIF_F_LOOPBACK) && netif_running(netdev)) |
1442 | return nicvf_config_loopback(nic, features); | |
1443 | ||
aa2e259b SG |
1444 | return 0; |
1445 | } | |
1446 | ||
4863dea3 SG |
1447 | static const struct net_device_ops nicvf_netdev_ops = { |
1448 | .ndo_open = nicvf_open, | |
1449 | .ndo_stop = nicvf_stop, | |
1450 | .ndo_start_xmit = nicvf_xmit, | |
1451 | .ndo_change_mtu = nicvf_change_mtu, | |
1452 | .ndo_set_mac_address = nicvf_set_mac_address, | |
1453 | .ndo_get_stats64 = nicvf_get_stats64, | |
1454 | .ndo_tx_timeout = nicvf_tx_timeout, | |
d77a2384 | 1455 | .ndo_fix_features = nicvf_fix_features, |
aa2e259b | 1456 | .ndo_set_features = nicvf_set_features, |
4863dea3 SG |
1457 | }; |
1458 | ||
1459 | static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
1460 | { | |
1461 | struct device *dev = &pdev->dev; | |
1462 | struct net_device *netdev; | |
1463 | struct nicvf *nic; | |
92dc8769 | 1464 | int err, qcount; |
4863dea3 SG |
1465 | |
1466 | err = pci_enable_device(pdev); | |
1467 | if (err) { | |
1468 | dev_err(dev, "Failed to enable PCI device\n"); | |
1469 | return err; | |
1470 | } | |
1471 | ||
1472 | err = pci_request_regions(pdev, DRV_NAME); | |
1473 | if (err) { | |
1474 | dev_err(dev, "PCI request regions failed 0x%x\n", err); | |
1475 | goto err_disable_device; | |
1476 | } | |
1477 | ||
1478 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48)); | |
1479 | if (err) { | |
1480 | dev_err(dev, "Unable to get usable DMA configuration\n"); | |
1481 | goto err_release_regions; | |
1482 | } | |
1483 | ||
1484 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48)); | |
1485 | if (err) { | |
1486 | dev_err(dev, "unable to get 48-bit DMA for consistent allocations\n"); | |
1487 | goto err_release_regions; | |
1488 | } | |
1489 | ||
92dc8769 SG |
1490 | qcount = MAX_CMP_QUEUES_PER_QS; |
1491 | ||
1492 | /* Restrict multiqset support only for host bound VFs */ | |
1493 | if (pdev->is_virtfn) { | |
1494 | /* Set max number of queues per VF */ | |
1495 | qcount = roundup(num_online_cpus(), MAX_CMP_QUEUES_PER_QS); | |
1496 | qcount = min(qcount, | |
1497 | (MAX_SQS_PER_VF + 1) * MAX_CMP_QUEUES_PER_QS); | |
1498 | } | |
1499 | ||
1500 | netdev = alloc_etherdev_mqs(sizeof(struct nicvf), qcount, qcount); | |
4863dea3 SG |
1501 | if (!netdev) { |
1502 | err = -ENOMEM; | |
1503 | goto err_release_regions; | |
1504 | } | |
1505 | ||
1506 | pci_set_drvdata(pdev, netdev); | |
1507 | ||
1508 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
1509 | ||
1510 | nic = netdev_priv(netdev); | |
1511 | nic->netdev = netdev; | |
1512 | nic->pdev = pdev; | |
92dc8769 SG |
1513 | nic->pnicvf = nic; |
1514 | nic->max_queues = qcount; | |
4863dea3 SG |
1515 | |
1516 | /* MAP VF's configuration registers */ | |
1517 | nic->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); | |
1518 | if (!nic->reg_base) { | |
1519 | dev_err(dev, "Cannot map config register space, aborting\n"); | |
1520 | err = -ENOMEM; | |
1521 | goto err_free_netdev; | |
1522 | } | |
1523 | ||
1524 | err = nicvf_set_qset_resources(nic); | |
1525 | if (err) | |
1526 | goto err_free_netdev; | |
1527 | ||
4863dea3 SG |
1528 | /* Check if PF is alive and get MAC address for this VF */ |
1529 | err = nicvf_register_misc_interrupt(nic); | |
1530 | if (err) | |
1531 | goto err_free_netdev; | |
1532 | ||
92dc8769 SG |
1533 | nicvf_send_vf_struct(nic); |
1534 | ||
1535 | /* Check if this VF is in QS only mode */ | |
1536 | if (nic->sqs_mode) | |
1537 | return 0; | |
1538 | ||
1539 | err = nicvf_set_real_num_queues(netdev, nic->tx_queues, nic->rx_queues); | |
1540 | if (err) | |
1541 | goto err_unregister_interrupts; | |
1542 | ||
aa2e259b SG |
1543 | netdev->hw_features = (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SG | |
1544 | NETIF_F_TSO | NETIF_F_GRO | | |
92dc8769 SG |
1545 | NETIF_F_HW_VLAN_CTAG_RX); |
1546 | ||
1547 | netdev->hw_features |= NETIF_F_RXHASH; | |
aa2e259b SG |
1548 | |
1549 | netdev->features |= netdev->hw_features; | |
d77a2384 | 1550 | netdev->hw_features |= NETIF_F_LOOPBACK; |
38bb5d4f | 1551 | |
aa2e259b | 1552 | netdev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO; |
4863dea3 SG |
1553 | |
1554 | netdev->netdev_ops = &nicvf_netdev_ops; | |
3d7a8aaa | 1555 | netdev->watchdog_timeo = NICVF_TX_TIMEOUT; |
4863dea3 SG |
1556 | |
1557 | INIT_WORK(&nic->reset_task, nicvf_reset_task); | |
1558 | ||
1559 | err = register_netdev(netdev); | |
1560 | if (err) { | |
1561 | dev_err(dev, "Failed to register netdevice\n"); | |
1562 | goto err_unregister_interrupts; | |
1563 | } | |
1564 | ||
1565 | nic->msg_enable = debug; | |
1566 | ||
1567 | nicvf_set_ethtool_ops(netdev); | |
1568 | ||
1569 | return 0; | |
1570 | ||
1571 | err_unregister_interrupts: | |
1572 | nicvf_unregister_interrupts(nic); | |
1573 | err_free_netdev: | |
1574 | pci_set_drvdata(pdev, NULL); | |
1575 | free_netdev(netdev); | |
1576 | err_release_regions: | |
1577 | pci_release_regions(pdev); | |
1578 | err_disable_device: | |
1579 | pci_disable_device(pdev); | |
1580 | return err; | |
1581 | } | |
1582 | ||
1583 | static void nicvf_remove(struct pci_dev *pdev) | |
1584 | { | |
1585 | struct net_device *netdev = pci_get_drvdata(pdev); | |
1586 | struct nicvf *nic = netdev_priv(netdev); | |
92dc8769 | 1587 | struct net_device *pnetdev = nic->pnicvf->netdev; |
4863dea3 | 1588 | |
92dc8769 SG |
1589 | /* Check if this Qset is assigned to different VF. |
1590 | * If yes, clean primary and all secondary Qsets. | |
1591 | */ | |
1592 | if (pnetdev && (pnetdev->reg_state == NETREG_REGISTERED)) | |
1593 | unregister_netdev(pnetdev); | |
4863dea3 SG |
1594 | nicvf_unregister_interrupts(nic); |
1595 | pci_set_drvdata(pdev, NULL); | |
1596 | free_netdev(netdev); | |
1597 | pci_release_regions(pdev); | |
1598 | pci_disable_device(pdev); | |
1599 | } | |
1600 | ||
4adf4351 SG |
1601 | static void nicvf_shutdown(struct pci_dev *pdev) |
1602 | { | |
1603 | nicvf_remove(pdev); | |
1604 | } | |
1605 | ||
4863dea3 SG |
1606 | static struct pci_driver nicvf_driver = { |
1607 | .name = DRV_NAME, | |
1608 | .id_table = nicvf_id_table, | |
1609 | .probe = nicvf_probe, | |
1610 | .remove = nicvf_remove, | |
4adf4351 | 1611 | .shutdown = nicvf_shutdown, |
4863dea3 SG |
1612 | }; |
1613 | ||
1614 | static int __init nicvf_init_module(void) | |
1615 | { | |
1616 | pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION); | |
1617 | ||
1618 | return pci_register_driver(&nicvf_driver); | |
1619 | } | |
1620 | ||
1621 | static void __exit nicvf_cleanup_module(void) | |
1622 | { | |
1623 | pci_unregister_driver(&nicvf_driver); | |
1624 | } | |
1625 | ||
1626 | module_init(nicvf_init_module); | |
1627 | module_exit(nicvf_cleanup_module); |