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Merge branch 'for-linus-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / emulex / benet / be_main.c
1 /*
2 * Copyright (C) 2005 - 2016 Broadcom
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
10 * Contact Information:
11 * linux-drivers@emulex.com
12 *
13 * Emulex
14 * 3333 Susan Street
15 * Costa Mesa, CA 92626
16 */
17
18 #include <linux/prefetch.h>
19 #include <linux/module.h>
20 #include "be.h"
21 #include "be_cmds.h"
22 #include <asm/div64.h>
23 #include <linux/aer.h>
24 #include <linux/if_bridge.h>
25 #include <net/busy_poll.h>
26 #include <net/vxlan.h>
27
28 MODULE_VERSION(DRV_VER);
29 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
30 MODULE_AUTHOR("Emulex Corporation");
31 MODULE_LICENSE("GPL");
32
33 /* num_vfs module param is obsolete.
34 * Use sysfs method to enable/disable VFs.
35 */
36 static unsigned int num_vfs;
37 module_param(num_vfs, uint, S_IRUGO);
38 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
39
40 static ushort rx_frag_size = 2048;
41 module_param(rx_frag_size, ushort, S_IRUGO);
42 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
43
44 /* Per-module error detection/recovery workq shared across all functions.
45 * Each function schedules its own work request on this shared workq.
46 */
47 static struct workqueue_struct *be_err_recovery_workq;
48
49 static const struct pci_device_id be_dev_ids[] = {
50 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
51 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
52 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
53 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
54 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
55 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
56 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
57 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
58 { 0 }
59 };
60 MODULE_DEVICE_TABLE(pci, be_dev_ids);
61
62 /* Workqueue used by all functions for defering cmd calls to the adapter */
63 static struct workqueue_struct *be_wq;
64
65 /* UE Status Low CSR */
66 static const char * const ue_status_low_desc[] = {
67 "CEV",
68 "CTX",
69 "DBUF",
70 "ERX",
71 "Host",
72 "MPU",
73 "NDMA",
74 "PTC ",
75 "RDMA ",
76 "RXF ",
77 "RXIPS ",
78 "RXULP0 ",
79 "RXULP1 ",
80 "RXULP2 ",
81 "TIM ",
82 "TPOST ",
83 "TPRE ",
84 "TXIPS ",
85 "TXULP0 ",
86 "TXULP1 ",
87 "UC ",
88 "WDMA ",
89 "TXULP2 ",
90 "HOST1 ",
91 "P0_OB_LINK ",
92 "P1_OB_LINK ",
93 "HOST_GPIO ",
94 "MBOX ",
95 "ERX2 ",
96 "SPARE ",
97 "JTAG ",
98 "MPU_INTPEND "
99 };
100
101 /* UE Status High CSR */
102 static const char * const ue_status_hi_desc[] = {
103 "LPCMEMHOST",
104 "MGMT_MAC",
105 "PCS0ONLINE",
106 "MPU_IRAM",
107 "PCS1ONLINE",
108 "PCTL0",
109 "PCTL1",
110 "PMEM",
111 "RR",
112 "TXPB",
113 "RXPP",
114 "XAUI",
115 "TXP",
116 "ARM",
117 "IPC",
118 "HOST2",
119 "HOST3",
120 "HOST4",
121 "HOST5",
122 "HOST6",
123 "HOST7",
124 "ECRC",
125 "Poison TLP",
126 "NETC",
127 "PERIPH",
128 "LLTXULP",
129 "D2P",
130 "RCON",
131 "LDMA",
132 "LLTXP",
133 "LLTXPB",
134 "Unknown"
135 };
136
137 #define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \
138 BE_IF_FLAGS_BROADCAST | \
139 BE_IF_FLAGS_MULTICAST | \
140 BE_IF_FLAGS_PASS_L3L4_ERRORS)
141
142 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
143 {
144 struct be_dma_mem *mem = &q->dma_mem;
145
146 if (mem->va) {
147 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
148 mem->dma);
149 mem->va = NULL;
150 }
151 }
152
153 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
154 u16 len, u16 entry_size)
155 {
156 struct be_dma_mem *mem = &q->dma_mem;
157
158 memset(q, 0, sizeof(*q));
159 q->len = len;
160 q->entry_size = entry_size;
161 mem->size = len * entry_size;
162 mem->va = dma_zalloc_coherent(&adapter->pdev->dev, mem->size, &mem->dma,
163 GFP_KERNEL);
164 if (!mem->va)
165 return -ENOMEM;
166 return 0;
167 }
168
169 static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
170 {
171 u32 reg, enabled;
172
173 pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
174 &reg);
175 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
176
177 if (!enabled && enable)
178 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
179 else if (enabled && !enable)
180 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
181 else
182 return;
183
184 pci_write_config_dword(adapter->pdev,
185 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
186 }
187
188 static void be_intr_set(struct be_adapter *adapter, bool enable)
189 {
190 int status = 0;
191
192 /* On lancer interrupts can't be controlled via this register */
193 if (lancer_chip(adapter))
194 return;
195
196 if (be_check_error(adapter, BE_ERROR_EEH))
197 return;
198
199 status = be_cmd_intr_set(adapter, enable);
200 if (status)
201 be_reg_intr_set(adapter, enable);
202 }
203
204 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
205 {
206 u32 val = 0;
207
208 if (be_check_error(adapter, BE_ERROR_HW))
209 return;
210
211 val |= qid & DB_RQ_RING_ID_MASK;
212 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
213
214 wmb();
215 iowrite32(val, adapter->db + DB_RQ_OFFSET);
216 }
217
218 static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
219 u16 posted)
220 {
221 u32 val = 0;
222
223 if (be_check_error(adapter, BE_ERROR_HW))
224 return;
225
226 val |= txo->q.id & DB_TXULP_RING_ID_MASK;
227 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
228
229 wmb();
230 iowrite32(val, adapter->db + txo->db_offset);
231 }
232
233 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
234 bool arm, bool clear_int, u16 num_popped,
235 u32 eq_delay_mult_enc)
236 {
237 u32 val = 0;
238
239 val |= qid & DB_EQ_RING_ID_MASK;
240 val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);
241
242 if (be_check_error(adapter, BE_ERROR_HW))
243 return;
244
245 if (arm)
246 val |= 1 << DB_EQ_REARM_SHIFT;
247 if (clear_int)
248 val |= 1 << DB_EQ_CLR_SHIFT;
249 val |= 1 << DB_EQ_EVNT_SHIFT;
250 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
251 val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;
252 iowrite32(val, adapter->db + DB_EQ_OFFSET);
253 }
254
255 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
256 {
257 u32 val = 0;
258
259 val |= qid & DB_CQ_RING_ID_MASK;
260 val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
261 DB_CQ_RING_ID_EXT_MASK_SHIFT);
262
263 if (be_check_error(adapter, BE_ERROR_HW))
264 return;
265
266 if (arm)
267 val |= 1 << DB_CQ_REARM_SHIFT;
268 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
269 iowrite32(val, adapter->db + DB_CQ_OFFSET);
270 }
271
272 static int be_dev_mac_add(struct be_adapter *adapter, u8 *mac)
273 {
274 int i;
275
276 /* Check if mac has already been added as part of uc-list */
277 for (i = 0; i < adapter->uc_macs; i++) {
278 if (ether_addr_equal(adapter->uc_list[i].mac, mac)) {
279 /* mac already added, skip addition */
280 adapter->pmac_id[0] = adapter->pmac_id[i + 1];
281 return 0;
282 }
283 }
284
285 return be_cmd_pmac_add(adapter, mac, adapter->if_handle,
286 &adapter->pmac_id[0], 0);
287 }
288
289 static void be_dev_mac_del(struct be_adapter *adapter, int pmac_id)
290 {
291 int i;
292
293 /* Skip deletion if the programmed mac is
294 * being used in uc-list
295 */
296 for (i = 0; i < adapter->uc_macs; i++) {
297 if (adapter->pmac_id[i + 1] == pmac_id)
298 return;
299 }
300 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
301 }
302
303 static int be_mac_addr_set(struct net_device *netdev, void *p)
304 {
305 struct be_adapter *adapter = netdev_priv(netdev);
306 struct device *dev = &adapter->pdev->dev;
307 struct sockaddr *addr = p;
308 int status;
309 u8 mac[ETH_ALEN];
310 u32 old_pmac_id = adapter->pmac_id[0];
311
312 if (!is_valid_ether_addr(addr->sa_data))
313 return -EADDRNOTAVAIL;
314
315 /* Proceed further only if, User provided MAC is different
316 * from active MAC
317 */
318 if (ether_addr_equal(addr->sa_data, adapter->dev_mac))
319 return 0;
320
321 /* BE3 VFs without FILTMGMT privilege are not allowed to set its MAC
322 * address
323 */
324 if (BEx_chip(adapter) && be_virtfn(adapter) &&
325 !check_privilege(adapter, BE_PRIV_FILTMGMT))
326 return -EPERM;
327
328 /* if device is not running, copy MAC to netdev->dev_addr */
329 if (!netif_running(netdev))
330 goto done;
331
332 /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
333 * privilege or if PF did not provision the new MAC address.
334 * On BE3, this cmd will always fail if the VF doesn't have the
335 * FILTMGMT privilege. This failure is OK, only if the PF programmed
336 * the MAC for the VF.
337 */
338 mutex_lock(&adapter->rx_filter_lock);
339 status = be_dev_mac_add(adapter, (u8 *)addr->sa_data);
340 if (!status) {
341
342 /* Delete the old programmed MAC. This call may fail if the
343 * old MAC was already deleted by the PF driver.
344 */
345 if (adapter->pmac_id[0] != old_pmac_id)
346 be_dev_mac_del(adapter, old_pmac_id);
347 }
348
349 mutex_unlock(&adapter->rx_filter_lock);
350 /* Decide if the new MAC is successfully activated only after
351 * querying the FW
352 */
353 status = be_cmd_get_active_mac(adapter, adapter->pmac_id[0], mac,
354 adapter->if_handle, true, 0);
355 if (status)
356 goto err;
357
358 /* The MAC change did not happen, either due to lack of privilege
359 * or PF didn't pre-provision.
360 */
361 if (!ether_addr_equal(addr->sa_data, mac)) {
362 status = -EPERM;
363 goto err;
364 }
365
366 /* Remember currently programmed MAC */
367 ether_addr_copy(adapter->dev_mac, addr->sa_data);
368 done:
369 ether_addr_copy(netdev->dev_addr, addr->sa_data);
370 dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
371 return 0;
372 err:
373 dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
374 return status;
375 }
376
377 /* BE2 supports only v0 cmd */
378 static void *hw_stats_from_cmd(struct be_adapter *adapter)
379 {
380 if (BE2_chip(adapter)) {
381 struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
382
383 return &cmd->hw_stats;
384 } else if (BE3_chip(adapter)) {
385 struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
386
387 return &cmd->hw_stats;
388 } else {
389 struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
390
391 return &cmd->hw_stats;
392 }
393 }
394
395 /* BE2 supports only v0 cmd */
396 static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
397 {
398 if (BE2_chip(adapter)) {
399 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
400
401 return &hw_stats->erx;
402 } else if (BE3_chip(adapter)) {
403 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
404
405 return &hw_stats->erx;
406 } else {
407 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
408
409 return &hw_stats->erx;
410 }
411 }
412
413 static void populate_be_v0_stats(struct be_adapter *adapter)
414 {
415 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
416 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
417 struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
418 struct be_port_rxf_stats_v0 *port_stats =
419 &rxf_stats->port[adapter->port_num];
420 struct be_drv_stats *drvs = &adapter->drv_stats;
421
422 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
423 drvs->rx_pause_frames = port_stats->rx_pause_frames;
424 drvs->rx_crc_errors = port_stats->rx_crc_errors;
425 drvs->rx_control_frames = port_stats->rx_control_frames;
426 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
427 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
428 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
429 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
430 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
431 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
432 drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
433 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
434 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
435 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
436 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
437 drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
438 drvs->rx_dropped_header_too_small =
439 port_stats->rx_dropped_header_too_small;
440 drvs->rx_address_filtered =
441 port_stats->rx_address_filtered +
442 port_stats->rx_vlan_filtered;
443 drvs->rx_alignment_symbol_errors =
444 port_stats->rx_alignment_symbol_errors;
445
446 drvs->tx_pauseframes = port_stats->tx_pauseframes;
447 drvs->tx_controlframes = port_stats->tx_controlframes;
448
449 if (adapter->port_num)
450 drvs->jabber_events = rxf_stats->port1_jabber_events;
451 else
452 drvs->jabber_events = rxf_stats->port0_jabber_events;
453 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
454 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
455 drvs->forwarded_packets = rxf_stats->forwarded_packets;
456 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
457 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
458 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
459 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
460 }
461
462 static void populate_be_v1_stats(struct be_adapter *adapter)
463 {
464 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
465 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
466 struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
467 struct be_port_rxf_stats_v1 *port_stats =
468 &rxf_stats->port[adapter->port_num];
469 struct be_drv_stats *drvs = &adapter->drv_stats;
470
471 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
472 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
473 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
474 drvs->rx_pause_frames = port_stats->rx_pause_frames;
475 drvs->rx_crc_errors = port_stats->rx_crc_errors;
476 drvs->rx_control_frames = port_stats->rx_control_frames;
477 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
478 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
479 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
480 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
481 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
482 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
483 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
484 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
485 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
486 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
487 drvs->rx_dropped_header_too_small =
488 port_stats->rx_dropped_header_too_small;
489 drvs->rx_input_fifo_overflow_drop =
490 port_stats->rx_input_fifo_overflow_drop;
491 drvs->rx_address_filtered = port_stats->rx_address_filtered;
492 drvs->rx_alignment_symbol_errors =
493 port_stats->rx_alignment_symbol_errors;
494 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
495 drvs->tx_pauseframes = port_stats->tx_pauseframes;
496 drvs->tx_controlframes = port_stats->tx_controlframes;
497 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
498 drvs->jabber_events = port_stats->jabber_events;
499 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
500 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
501 drvs->forwarded_packets = rxf_stats->forwarded_packets;
502 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
503 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
504 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
505 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
506 }
507
508 static void populate_be_v2_stats(struct be_adapter *adapter)
509 {
510 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
511 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
512 struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
513 struct be_port_rxf_stats_v2 *port_stats =
514 &rxf_stats->port[adapter->port_num];
515 struct be_drv_stats *drvs = &adapter->drv_stats;
516
517 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
518 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
519 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
520 drvs->rx_pause_frames = port_stats->rx_pause_frames;
521 drvs->rx_crc_errors = port_stats->rx_crc_errors;
522 drvs->rx_control_frames = port_stats->rx_control_frames;
523 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
524 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
525 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
526 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
527 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
528 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
529 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
530 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
531 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
532 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
533 drvs->rx_dropped_header_too_small =
534 port_stats->rx_dropped_header_too_small;
535 drvs->rx_input_fifo_overflow_drop =
536 port_stats->rx_input_fifo_overflow_drop;
537 drvs->rx_address_filtered = port_stats->rx_address_filtered;
538 drvs->rx_alignment_symbol_errors =
539 port_stats->rx_alignment_symbol_errors;
540 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
541 drvs->tx_pauseframes = port_stats->tx_pauseframes;
542 drvs->tx_controlframes = port_stats->tx_controlframes;
543 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
544 drvs->jabber_events = port_stats->jabber_events;
545 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
546 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
547 drvs->forwarded_packets = rxf_stats->forwarded_packets;
548 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
549 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
550 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
551 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
552 if (be_roce_supported(adapter)) {
553 drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
554 drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
555 drvs->rx_roce_frames = port_stats->roce_frames_received;
556 drvs->roce_drops_crc = port_stats->roce_drops_crc;
557 drvs->roce_drops_payload_len =
558 port_stats->roce_drops_payload_len;
559 }
560 }
561
562 static void populate_lancer_stats(struct be_adapter *adapter)
563 {
564 struct be_drv_stats *drvs = &adapter->drv_stats;
565 struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);
566
567 be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
568 drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
569 drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
570 drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
571 drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
572 drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
573 drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
574 drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
575 drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
576 drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
577 drvs->rx_dropped_tcp_length =
578 pport_stats->rx_dropped_invalid_tcp_length;
579 drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
580 drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
581 drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
582 drvs->rx_dropped_header_too_small =
583 pport_stats->rx_dropped_header_too_small;
584 drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
585 drvs->rx_address_filtered =
586 pport_stats->rx_address_filtered +
587 pport_stats->rx_vlan_filtered;
588 drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
589 drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
590 drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
591 drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
592 drvs->jabber_events = pport_stats->rx_jabbers;
593 drvs->forwarded_packets = pport_stats->num_forwards_lo;
594 drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
595 drvs->rx_drops_too_many_frags =
596 pport_stats->rx_drops_too_many_frags_lo;
597 }
598
599 static void accumulate_16bit_val(u32 *acc, u16 val)
600 {
601 #define lo(x) (x & 0xFFFF)
602 #define hi(x) (x & 0xFFFF0000)
603 bool wrapped = val < lo(*acc);
604 u32 newacc = hi(*acc) + val;
605
606 if (wrapped)
607 newacc += 65536;
608 ACCESS_ONCE(*acc) = newacc;
609 }
610
611 static void populate_erx_stats(struct be_adapter *adapter,
612 struct be_rx_obj *rxo, u32 erx_stat)
613 {
614 if (!BEx_chip(adapter))
615 rx_stats(rxo)->rx_drops_no_frags = erx_stat;
616 else
617 /* below erx HW counter can actually wrap around after
618 * 65535. Driver accumulates a 32-bit value
619 */
620 accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
621 (u16)erx_stat);
622 }
623
624 void be_parse_stats(struct be_adapter *adapter)
625 {
626 struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
627 struct be_rx_obj *rxo;
628 int i;
629 u32 erx_stat;
630
631 if (lancer_chip(adapter)) {
632 populate_lancer_stats(adapter);
633 } else {
634 if (BE2_chip(adapter))
635 populate_be_v0_stats(adapter);
636 else if (BE3_chip(adapter))
637 /* for BE3 */
638 populate_be_v1_stats(adapter);
639 else
640 populate_be_v2_stats(adapter);
641
642 /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
643 for_all_rx_queues(adapter, rxo, i) {
644 erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
645 populate_erx_stats(adapter, rxo, erx_stat);
646 }
647 }
648 }
649
650 static void be_get_stats64(struct net_device *netdev,
651 struct rtnl_link_stats64 *stats)
652 {
653 struct be_adapter *adapter = netdev_priv(netdev);
654 struct be_drv_stats *drvs = &adapter->drv_stats;
655 struct be_rx_obj *rxo;
656 struct be_tx_obj *txo;
657 u64 pkts, bytes;
658 unsigned int start;
659 int i;
660
661 for_all_rx_queues(adapter, rxo, i) {
662 const struct be_rx_stats *rx_stats = rx_stats(rxo);
663
664 do {
665 start = u64_stats_fetch_begin_irq(&rx_stats->sync);
666 pkts = rx_stats(rxo)->rx_pkts;
667 bytes = rx_stats(rxo)->rx_bytes;
668 } while (u64_stats_fetch_retry_irq(&rx_stats->sync, start));
669 stats->rx_packets += pkts;
670 stats->rx_bytes += bytes;
671 stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
672 stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
673 rx_stats(rxo)->rx_drops_no_frags;
674 }
675
676 for_all_tx_queues(adapter, txo, i) {
677 const struct be_tx_stats *tx_stats = tx_stats(txo);
678
679 do {
680 start = u64_stats_fetch_begin_irq(&tx_stats->sync);
681 pkts = tx_stats(txo)->tx_pkts;
682 bytes = tx_stats(txo)->tx_bytes;
683 } while (u64_stats_fetch_retry_irq(&tx_stats->sync, start));
684 stats->tx_packets += pkts;
685 stats->tx_bytes += bytes;
686 }
687
688 /* bad pkts received */
689 stats->rx_errors = drvs->rx_crc_errors +
690 drvs->rx_alignment_symbol_errors +
691 drvs->rx_in_range_errors +
692 drvs->rx_out_range_errors +
693 drvs->rx_frame_too_long +
694 drvs->rx_dropped_too_small +
695 drvs->rx_dropped_too_short +
696 drvs->rx_dropped_header_too_small +
697 drvs->rx_dropped_tcp_length +
698 drvs->rx_dropped_runt;
699
700 /* detailed rx errors */
701 stats->rx_length_errors = drvs->rx_in_range_errors +
702 drvs->rx_out_range_errors +
703 drvs->rx_frame_too_long;
704
705 stats->rx_crc_errors = drvs->rx_crc_errors;
706
707 /* frame alignment errors */
708 stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
709
710 /* receiver fifo overrun */
711 /* drops_no_pbuf is no per i/f, it's per BE card */
712 stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
713 drvs->rx_input_fifo_overflow_drop +
714 drvs->rx_drops_no_pbuf;
715 }
716
717 void be_link_status_update(struct be_adapter *adapter, u8 link_status)
718 {
719 struct net_device *netdev = adapter->netdev;
720
721 if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
722 netif_carrier_off(netdev);
723 adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
724 }
725
726 if (link_status)
727 netif_carrier_on(netdev);
728 else
729 netif_carrier_off(netdev);
730
731 netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
732 }
733
734 static int be_gso_hdr_len(struct sk_buff *skb)
735 {
736 if (skb->encapsulation)
737 return skb_inner_transport_offset(skb) +
738 inner_tcp_hdrlen(skb);
739 return skb_transport_offset(skb) + tcp_hdrlen(skb);
740 }
741
742 static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
743 {
744 struct be_tx_stats *stats = tx_stats(txo);
745 u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
746 /* Account for headers which get duplicated in TSO pkt */
747 u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0;
748
749 u64_stats_update_begin(&stats->sync);
750 stats->tx_reqs++;
751 stats->tx_bytes += skb->len + dup_hdr_len;
752 stats->tx_pkts += tx_pkts;
753 if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
754 stats->tx_vxlan_offload_pkts += tx_pkts;
755 u64_stats_update_end(&stats->sync);
756 }
757
758 /* Returns number of WRBs needed for the skb */
759 static u32 skb_wrb_cnt(struct sk_buff *skb)
760 {
761 /* +1 for the header wrb */
762 return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;
763 }
764
765 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
766 {
767 wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));
768 wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));
769 wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);
770 wrb->rsvd0 = 0;
771 }
772
773 /* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb
774 * to avoid the swap and shift/mask operations in wrb_fill().
775 */
776 static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)
777 {
778 wrb->frag_pa_hi = 0;
779 wrb->frag_pa_lo = 0;
780 wrb->frag_len = 0;
781 wrb->rsvd0 = 0;
782 }
783
784 static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
785 struct sk_buff *skb)
786 {
787 u8 vlan_prio;
788 u16 vlan_tag;
789
790 vlan_tag = skb_vlan_tag_get(skb);
791 vlan_prio = (vlan_tag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
792 /* If vlan priority provided by OS is NOT in available bmap */
793 if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
794 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
795 adapter->recommended_prio_bits;
796
797 return vlan_tag;
798 }
799
800 /* Used only for IP tunnel packets */
801 static u16 skb_inner_ip_proto(struct sk_buff *skb)
802 {
803 return (inner_ip_hdr(skb)->version == 4) ?
804 inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
805 }
806
807 static u16 skb_ip_proto(struct sk_buff *skb)
808 {
809 return (ip_hdr(skb)->version == 4) ?
810 ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
811 }
812
813 static inline bool be_is_txq_full(struct be_tx_obj *txo)
814 {
815 return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;
816 }
817
818 static inline bool be_can_txq_wake(struct be_tx_obj *txo)
819 {
820 return atomic_read(&txo->q.used) < txo->q.len / 2;
821 }
822
823 static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)
824 {
825 return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;
826 }
827
828 static void be_get_wrb_params_from_skb(struct be_adapter *adapter,
829 struct sk_buff *skb,
830 struct be_wrb_params *wrb_params)
831 {
832 u16 proto;
833
834 if (skb_is_gso(skb)) {
835 BE_WRB_F_SET(wrb_params->features, LSO, 1);
836 wrb_params->lso_mss = skb_shinfo(skb)->gso_size;
837 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
838 BE_WRB_F_SET(wrb_params->features, LSO6, 1);
839 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
840 if (skb->encapsulation) {
841 BE_WRB_F_SET(wrb_params->features, IPCS, 1);
842 proto = skb_inner_ip_proto(skb);
843 } else {
844 proto = skb_ip_proto(skb);
845 }
846 if (proto == IPPROTO_TCP)
847 BE_WRB_F_SET(wrb_params->features, TCPCS, 1);
848 else if (proto == IPPROTO_UDP)
849 BE_WRB_F_SET(wrb_params->features, UDPCS, 1);
850 }
851
852 if (skb_vlan_tag_present(skb)) {
853 BE_WRB_F_SET(wrb_params->features, VLAN, 1);
854 wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);
855 }
856
857 BE_WRB_F_SET(wrb_params->features, CRC, 1);
858 }
859
860 static void wrb_fill_hdr(struct be_adapter *adapter,
861 struct be_eth_hdr_wrb *hdr,
862 struct be_wrb_params *wrb_params,
863 struct sk_buff *skb)
864 {
865 memset(hdr, 0, sizeof(*hdr));
866
867 SET_TX_WRB_HDR_BITS(crc, hdr,
868 BE_WRB_F_GET(wrb_params->features, CRC));
869 SET_TX_WRB_HDR_BITS(ipcs, hdr,
870 BE_WRB_F_GET(wrb_params->features, IPCS));
871 SET_TX_WRB_HDR_BITS(tcpcs, hdr,
872 BE_WRB_F_GET(wrb_params->features, TCPCS));
873 SET_TX_WRB_HDR_BITS(udpcs, hdr,
874 BE_WRB_F_GET(wrb_params->features, UDPCS));
875
876 SET_TX_WRB_HDR_BITS(lso, hdr,
877 BE_WRB_F_GET(wrb_params->features, LSO));
878 SET_TX_WRB_HDR_BITS(lso6, hdr,
879 BE_WRB_F_GET(wrb_params->features, LSO6));
880 SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);
881
882 /* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this
883 * hack is not needed, the evt bit is set while ringing DB.
884 */
885 SET_TX_WRB_HDR_BITS(event, hdr,
886 BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));
887 SET_TX_WRB_HDR_BITS(vlan, hdr,
888 BE_WRB_F_GET(wrb_params->features, VLAN));
889 SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);
890
891 SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));
892 SET_TX_WRB_HDR_BITS(len, hdr, skb->len);
893 SET_TX_WRB_HDR_BITS(mgmt, hdr,
894 BE_WRB_F_GET(wrb_params->features, OS2BMC));
895 }
896
897 static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
898 bool unmap_single)
899 {
900 dma_addr_t dma;
901 u32 frag_len = le32_to_cpu(wrb->frag_len);
902
903
904 dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |
905 (u64)le32_to_cpu(wrb->frag_pa_lo);
906 if (frag_len) {
907 if (unmap_single)
908 dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);
909 else
910 dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);
911 }
912 }
913
914 /* Grab a WRB header for xmit */
915 static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)
916 {
917 u32 head = txo->q.head;
918
919 queue_head_inc(&txo->q);
920 return head;
921 }
922
923 /* Set up the WRB header for xmit */
924 static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,
925 struct be_tx_obj *txo,
926 struct be_wrb_params *wrb_params,
927 struct sk_buff *skb, u16 head)
928 {
929 u32 num_frags = skb_wrb_cnt(skb);
930 struct be_queue_info *txq = &txo->q;
931 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);
932
933 wrb_fill_hdr(adapter, hdr, wrb_params, skb);
934 be_dws_cpu_to_le(hdr, sizeof(*hdr));
935
936 BUG_ON(txo->sent_skb_list[head]);
937 txo->sent_skb_list[head] = skb;
938 txo->last_req_hdr = head;
939 atomic_add(num_frags, &txq->used);
940 txo->last_req_wrb_cnt = num_frags;
941 txo->pend_wrb_cnt += num_frags;
942 }
943
944 /* Setup a WRB fragment (buffer descriptor) for xmit */
945 static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,
946 int len)
947 {
948 struct be_eth_wrb *wrb;
949 struct be_queue_info *txq = &txo->q;
950
951 wrb = queue_head_node(txq);
952 wrb_fill(wrb, busaddr, len);
953 queue_head_inc(txq);
954 }
955
956 /* Bring the queue back to the state it was in before be_xmit_enqueue() routine
957 * was invoked. The producer index is restored to the previous packet and the
958 * WRBs of the current packet are unmapped. Invoked to handle tx setup errors.
959 */
960 static void be_xmit_restore(struct be_adapter *adapter,
961 struct be_tx_obj *txo, u32 head, bool map_single,
962 u32 copied)
963 {
964 struct device *dev;
965 struct be_eth_wrb *wrb;
966 struct be_queue_info *txq = &txo->q;
967
968 dev = &adapter->pdev->dev;
969 txq->head = head;
970
971 /* skip the first wrb (hdr); it's not mapped */
972 queue_head_inc(txq);
973 while (copied) {
974 wrb = queue_head_node(txq);
975 unmap_tx_frag(dev, wrb, map_single);
976 map_single = false;
977 copied -= le32_to_cpu(wrb->frag_len);
978 queue_head_inc(txq);
979 }
980
981 txq->head = head;
982 }
983
984 /* Enqueue the given packet for transmit. This routine allocates WRBs for the
985 * packet, dma maps the packet buffers and sets up the WRBs. Returns the number
986 * of WRBs used up by the packet.
987 */
988 static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,
989 struct sk_buff *skb,
990 struct be_wrb_params *wrb_params)
991 {
992 u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);
993 struct device *dev = &adapter->pdev->dev;
994 struct be_queue_info *txq = &txo->q;
995 bool map_single = false;
996 u32 head = txq->head;
997 dma_addr_t busaddr;
998 int len;
999
1000 head = be_tx_get_wrb_hdr(txo);
1001
1002 if (skb->len > skb->data_len) {
1003 len = skb_headlen(skb);
1004
1005 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
1006 if (dma_mapping_error(dev, busaddr))
1007 goto dma_err;
1008 map_single = true;
1009 be_tx_setup_wrb_frag(txo, busaddr, len);
1010 copied += len;
1011 }
1012
1013 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1014 const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
1015 len = skb_frag_size(frag);
1016
1017 busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE);
1018 if (dma_mapping_error(dev, busaddr))
1019 goto dma_err;
1020 be_tx_setup_wrb_frag(txo, busaddr, len);
1021 copied += len;
1022 }
1023
1024 be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head);
1025
1026 be_tx_stats_update(txo, skb);
1027 return wrb_cnt;
1028
1029 dma_err:
1030 adapter->drv_stats.dma_map_errors++;
1031 be_xmit_restore(adapter, txo, head, map_single, copied);
1032 return 0;
1033 }
1034
1035 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
1036 {
1037 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
1038 }
1039
1040 static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
1041 struct sk_buff *skb,
1042 struct be_wrb_params
1043 *wrb_params)
1044 {
1045 u16 vlan_tag = 0;
1046
1047 skb = skb_share_check(skb, GFP_ATOMIC);
1048 if (unlikely(!skb))
1049 return skb;
1050
1051 if (skb_vlan_tag_present(skb))
1052 vlan_tag = be_get_tx_vlan_tag(adapter, skb);
1053
1054 if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
1055 if (!vlan_tag)
1056 vlan_tag = adapter->pvid;
1057 /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
1058 * skip VLAN insertion
1059 */
1060 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1061 }
1062
1063 if (vlan_tag) {
1064 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1065 vlan_tag);
1066 if (unlikely(!skb))
1067 return skb;
1068 skb->vlan_tci = 0;
1069 }
1070
1071 /* Insert the outer VLAN, if any */
1072 if (adapter->qnq_vid) {
1073 vlan_tag = adapter->qnq_vid;
1074 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1075 vlan_tag);
1076 if (unlikely(!skb))
1077 return skb;
1078 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1079 }
1080
1081 return skb;
1082 }
1083
1084 static bool be_ipv6_exthdr_check(struct sk_buff *skb)
1085 {
1086 struct ethhdr *eh = (struct ethhdr *)skb->data;
1087 u16 offset = ETH_HLEN;
1088
1089 if (eh->h_proto == htons(ETH_P_IPV6)) {
1090 struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);
1091
1092 offset += sizeof(struct ipv6hdr);
1093 if (ip6h->nexthdr != NEXTHDR_TCP &&
1094 ip6h->nexthdr != NEXTHDR_UDP) {
1095 struct ipv6_opt_hdr *ehdr =
1096 (struct ipv6_opt_hdr *)(skb->data + offset);
1097
1098 /* offending pkt: 2nd byte following IPv6 hdr is 0xff */
1099 if (ehdr->hdrlen == 0xff)
1100 return true;
1101 }
1102 }
1103 return false;
1104 }
1105
1106 static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)
1107 {
1108 return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid;
1109 }
1110
1111 static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb)
1112 {
1113 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
1114 }
1115
1116 static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
1117 struct sk_buff *skb,
1118 struct be_wrb_params
1119 *wrb_params)
1120 {
1121 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
1122 unsigned int eth_hdr_len;
1123 struct iphdr *ip;
1124
1125 /* For padded packets, BE HW modifies tot_len field in IP header
1126 * incorrecly when VLAN tag is inserted by HW.
1127 * For padded packets, Lancer computes incorrect checksum.
1128 */
1129 eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
1130 VLAN_ETH_HLEN : ETH_HLEN;
1131 if (skb->len <= 60 &&
1132 (lancer_chip(adapter) || skb_vlan_tag_present(skb)) &&
1133 is_ipv4_pkt(skb)) {
1134 ip = (struct iphdr *)ip_hdr(skb);
1135 pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
1136 }
1137
1138 /* If vlan tag is already inlined in the packet, skip HW VLAN
1139 * tagging in pvid-tagging mode
1140 */
1141 if (be_pvid_tagging_enabled(adapter) &&
1142 veh->h_vlan_proto == htons(ETH_P_8021Q))
1143 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1144
1145 /* HW has a bug wherein it will calculate CSUM for VLAN
1146 * pkts even though it is disabled.
1147 * Manually insert VLAN in pkt.
1148 */
1149 if (skb->ip_summed != CHECKSUM_PARTIAL &&
1150 skb_vlan_tag_present(skb)) {
1151 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1152 if (unlikely(!skb))
1153 goto err;
1154 }
1155
1156 /* HW may lockup when VLAN HW tagging is requested on
1157 * certain ipv6 packets. Drop such pkts if the HW workaround to
1158 * skip HW tagging is not enabled by FW.
1159 */
1160 if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) &&
1161 (adapter->pvid || adapter->qnq_vid) &&
1162 !qnq_async_evt_rcvd(adapter)))
1163 goto tx_drop;
1164
1165 /* Manual VLAN tag insertion to prevent:
1166 * ASIC lockup when the ASIC inserts VLAN tag into
1167 * certain ipv6 packets. Insert VLAN tags in driver,
1168 * and set event, completion, vlan bits accordingly
1169 * in the Tx WRB.
1170 */
1171 if (be_ipv6_tx_stall_chk(adapter, skb) &&
1172 be_vlan_tag_tx_chk(adapter, skb)) {
1173 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1174 if (unlikely(!skb))
1175 goto err;
1176 }
1177
1178 return skb;
1179 tx_drop:
1180 dev_kfree_skb_any(skb);
1181 err:
1182 return NULL;
1183 }
1184
1185 static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,
1186 struct sk_buff *skb,
1187 struct be_wrb_params *wrb_params)
1188 {
1189 int err;
1190
1191 /* Lancer, SH and BE3 in SRIOV mode have a bug wherein
1192 * packets that are 32b or less may cause a transmit stall
1193 * on that port. The workaround is to pad such packets
1194 * (len <= 32 bytes) to a minimum length of 36b.
1195 */
1196 if (skb->len <= 32) {
1197 if (skb_put_padto(skb, 36))
1198 return NULL;
1199 }
1200
1201 if (BEx_chip(adapter) || lancer_chip(adapter)) {
1202 skb = be_lancer_xmit_workarounds(adapter, skb, wrb_params);
1203 if (!skb)
1204 return NULL;
1205 }
1206
1207 /* The stack can send us skbs with length greater than
1208 * what the HW can handle. Trim the extra bytes.
1209 */
1210 WARN_ON_ONCE(skb->len > BE_MAX_GSO_SIZE);
1211 err = pskb_trim(skb, BE_MAX_GSO_SIZE);
1212 WARN_ON(err);
1213
1214 return skb;
1215 }
1216
1217 static void be_xmit_flush(struct be_adapter *adapter, struct be_tx_obj *txo)
1218 {
1219 struct be_queue_info *txq = &txo->q;
1220 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, txo->last_req_hdr);
1221
1222 /* Mark the last request eventable if it hasn't been marked already */
1223 if (!(hdr->dw[2] & cpu_to_le32(TX_HDR_WRB_EVT)))
1224 hdr->dw[2] |= cpu_to_le32(TX_HDR_WRB_EVT | TX_HDR_WRB_COMPL);
1225
1226 /* compose a dummy wrb if there are odd set of wrbs to notify */
1227 if (!lancer_chip(adapter) && (txo->pend_wrb_cnt & 1)) {
1228 wrb_fill_dummy(queue_head_node(txq));
1229 queue_head_inc(txq);
1230 atomic_inc(&txq->used);
1231 txo->pend_wrb_cnt++;
1232 hdr->dw[2] &= ~cpu_to_le32(TX_HDR_WRB_NUM_MASK <<
1233 TX_HDR_WRB_NUM_SHIFT);
1234 hdr->dw[2] |= cpu_to_le32((txo->last_req_wrb_cnt + 1) <<
1235 TX_HDR_WRB_NUM_SHIFT);
1236 }
1237 be_txq_notify(adapter, txo, txo->pend_wrb_cnt);
1238 txo->pend_wrb_cnt = 0;
1239 }
1240
1241 /* OS2BMC related */
1242
1243 #define DHCP_CLIENT_PORT 68
1244 #define DHCP_SERVER_PORT 67
1245 #define NET_BIOS_PORT1 137
1246 #define NET_BIOS_PORT2 138
1247 #define DHCPV6_RAS_PORT 547
1248
1249 #define is_mc_allowed_on_bmc(adapter, eh) \
1250 (!is_multicast_filt_enabled(adapter) && \
1251 is_multicast_ether_addr(eh->h_dest) && \
1252 !is_broadcast_ether_addr(eh->h_dest))
1253
1254 #define is_bc_allowed_on_bmc(adapter, eh) \
1255 (!is_broadcast_filt_enabled(adapter) && \
1256 is_broadcast_ether_addr(eh->h_dest))
1257
1258 #define is_arp_allowed_on_bmc(adapter, skb) \
1259 (is_arp(skb) && is_arp_filt_enabled(adapter))
1260
1261 #define is_broadcast_packet(eh, adapter) \
1262 (is_multicast_ether_addr(eh->h_dest) && \
1263 !compare_ether_addr(eh->h_dest, adapter->netdev->broadcast))
1264
1265 #define is_arp(skb) (skb->protocol == htons(ETH_P_ARP))
1266
1267 #define is_arp_filt_enabled(adapter) \
1268 (adapter->bmc_filt_mask & (BMC_FILT_BROADCAST_ARP))
1269
1270 #define is_dhcp_client_filt_enabled(adapter) \
1271 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_CLIENT)
1272
1273 #define is_dhcp_srvr_filt_enabled(adapter) \
1274 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_SERVER)
1275
1276 #define is_nbios_filt_enabled(adapter) \
1277 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_NET_BIOS)
1278
1279 #define is_ipv6_na_filt_enabled(adapter) \
1280 (adapter->bmc_filt_mask & \
1281 BMC_FILT_MULTICAST_IPV6_NEIGH_ADVER)
1282
1283 #define is_ipv6_ra_filt_enabled(adapter) \
1284 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RA)
1285
1286 #define is_ipv6_ras_filt_enabled(adapter) \
1287 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RAS)
1288
1289 #define is_broadcast_filt_enabled(adapter) \
1290 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST)
1291
1292 #define is_multicast_filt_enabled(adapter) \
1293 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST)
1294
1295 static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
1296 struct sk_buff **skb)
1297 {
1298 struct ethhdr *eh = (struct ethhdr *)(*skb)->data;
1299 bool os2bmc = false;
1300
1301 if (!be_is_os2bmc_enabled(adapter))
1302 goto done;
1303
1304 if (!is_multicast_ether_addr(eh->h_dest))
1305 goto done;
1306
1307 if (is_mc_allowed_on_bmc(adapter, eh) ||
1308 is_bc_allowed_on_bmc(adapter, eh) ||
1309 is_arp_allowed_on_bmc(adapter, (*skb))) {
1310 os2bmc = true;
1311 goto done;
1312 }
1313
1314 if ((*skb)->protocol == htons(ETH_P_IPV6)) {
1315 struct ipv6hdr *hdr = ipv6_hdr((*skb));
1316 u8 nexthdr = hdr->nexthdr;
1317
1318 if (nexthdr == IPPROTO_ICMPV6) {
1319 struct icmp6hdr *icmp6 = icmp6_hdr((*skb));
1320
1321 switch (icmp6->icmp6_type) {
1322 case NDISC_ROUTER_ADVERTISEMENT:
1323 os2bmc = is_ipv6_ra_filt_enabled(adapter);
1324 goto done;
1325 case NDISC_NEIGHBOUR_ADVERTISEMENT:
1326 os2bmc = is_ipv6_na_filt_enabled(adapter);
1327 goto done;
1328 default:
1329 break;
1330 }
1331 }
1332 }
1333
1334 if (is_udp_pkt((*skb))) {
1335 struct udphdr *udp = udp_hdr((*skb));
1336
1337 switch (ntohs(udp->dest)) {
1338 case DHCP_CLIENT_PORT:
1339 os2bmc = is_dhcp_client_filt_enabled(adapter);
1340 goto done;
1341 case DHCP_SERVER_PORT:
1342 os2bmc = is_dhcp_srvr_filt_enabled(adapter);
1343 goto done;
1344 case NET_BIOS_PORT1:
1345 case NET_BIOS_PORT2:
1346 os2bmc = is_nbios_filt_enabled(adapter);
1347 goto done;
1348 case DHCPV6_RAS_PORT:
1349 os2bmc = is_ipv6_ras_filt_enabled(adapter);
1350 goto done;
1351 default:
1352 break;
1353 }
1354 }
1355 done:
1356 /* For packets over a vlan, which are destined
1357 * to BMC, asic expects the vlan to be inline in the packet.
1358 */
1359 if (os2bmc)
1360 *skb = be_insert_vlan_in_pkt(adapter, *skb, NULL);
1361
1362 return os2bmc;
1363 }
1364
1365 static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
1366 {
1367 struct be_adapter *adapter = netdev_priv(netdev);
1368 u16 q_idx = skb_get_queue_mapping(skb);
1369 struct be_tx_obj *txo = &adapter->tx_obj[q_idx];
1370 struct be_wrb_params wrb_params = { 0 };
1371 bool flush = !skb->xmit_more;
1372 u16 wrb_cnt;
1373
1374 skb = be_xmit_workarounds(adapter, skb, &wrb_params);
1375 if (unlikely(!skb))
1376 goto drop;
1377
1378 be_get_wrb_params_from_skb(adapter, skb, &wrb_params);
1379
1380 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1381 if (unlikely(!wrb_cnt)) {
1382 dev_kfree_skb_any(skb);
1383 goto drop;
1384 }
1385
1386 /* if os2bmc is enabled and if the pkt is destined to bmc,
1387 * enqueue the pkt a 2nd time with mgmt bit set.
1388 */
1389 if (be_send_pkt_to_bmc(adapter, &skb)) {
1390 BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);
1391 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1392 if (unlikely(!wrb_cnt))
1393 goto drop;
1394 else
1395 skb_get(skb);
1396 }
1397
1398 if (be_is_txq_full(txo)) {
1399 netif_stop_subqueue(netdev, q_idx);
1400 tx_stats(txo)->tx_stops++;
1401 }
1402
1403 if (flush || __netif_subqueue_stopped(netdev, q_idx))
1404 be_xmit_flush(adapter, txo);
1405
1406 return NETDEV_TX_OK;
1407 drop:
1408 tx_stats(txo)->tx_drv_drops++;
1409 /* Flush the already enqueued tx requests */
1410 if (flush && txo->pend_wrb_cnt)
1411 be_xmit_flush(adapter, txo);
1412
1413 return NETDEV_TX_OK;
1414 }
1415
1416 static inline bool be_in_all_promisc(struct be_adapter *adapter)
1417 {
1418 return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
1419 BE_IF_FLAGS_ALL_PROMISCUOUS;
1420 }
1421
1422 static int be_set_vlan_promisc(struct be_adapter *adapter)
1423 {
1424 struct device *dev = &adapter->pdev->dev;
1425 int status;
1426
1427 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)
1428 return 0;
1429
1430 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);
1431 if (!status) {
1432 dev_info(dev, "Enabled VLAN promiscuous mode\n");
1433 adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;
1434 } else {
1435 dev_err(dev, "Failed to enable VLAN promiscuous mode\n");
1436 }
1437 return status;
1438 }
1439
1440 static int be_clear_vlan_promisc(struct be_adapter *adapter)
1441 {
1442 struct device *dev = &adapter->pdev->dev;
1443 int status;
1444
1445 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);
1446 if (!status) {
1447 dev_info(dev, "Disabling VLAN promiscuous mode\n");
1448 adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
1449 }
1450 return status;
1451 }
1452
1453 /*
1454 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1455 * If the user configures more, place BE in vlan promiscuous mode.
1456 */
1457 static int be_vid_config(struct be_adapter *adapter)
1458 {
1459 struct device *dev = &adapter->pdev->dev;
1460 u16 vids[BE_NUM_VLANS_SUPPORTED];
1461 u16 num = 0, i = 0;
1462 int status = 0;
1463
1464 /* No need to change the VLAN state if the I/F is in promiscuous */
1465 if (adapter->netdev->flags & IFF_PROMISC)
1466 return 0;
1467
1468 if (adapter->vlans_added > be_max_vlans(adapter))
1469 return be_set_vlan_promisc(adapter);
1470
1471 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
1472 status = be_clear_vlan_promisc(adapter);
1473 if (status)
1474 return status;
1475 }
1476 /* Construct VLAN Table to give to HW */
1477 for_each_set_bit(i, adapter->vids, VLAN_N_VID)
1478 vids[num++] = cpu_to_le16(i);
1479
1480 status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);
1481 if (status) {
1482 dev_err(dev, "Setting HW VLAN filtering failed\n");
1483 /* Set to VLAN promisc mode as setting VLAN filter failed */
1484 if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||
1485 addl_status(status) ==
1486 MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)
1487 return be_set_vlan_promisc(adapter);
1488 }
1489 return status;
1490 }
1491
1492 static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1493 {
1494 struct be_adapter *adapter = netdev_priv(netdev);
1495 int status = 0;
1496
1497 mutex_lock(&adapter->rx_filter_lock);
1498
1499 /* Packets with VID 0 are always received by Lancer by default */
1500 if (lancer_chip(adapter) && vid == 0)
1501 goto done;
1502
1503 if (test_bit(vid, adapter->vids))
1504 goto done;
1505
1506 set_bit(vid, adapter->vids);
1507 adapter->vlans_added++;
1508
1509 status = be_vid_config(adapter);
1510 done:
1511 mutex_unlock(&adapter->rx_filter_lock);
1512 return status;
1513 }
1514
1515 static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1516 {
1517 struct be_adapter *adapter = netdev_priv(netdev);
1518 int status = 0;
1519
1520 mutex_lock(&adapter->rx_filter_lock);
1521
1522 /* Packets with VID 0 are always received by Lancer by default */
1523 if (lancer_chip(adapter) && vid == 0)
1524 goto done;
1525
1526 if (!test_bit(vid, adapter->vids))
1527 goto done;
1528
1529 clear_bit(vid, adapter->vids);
1530 adapter->vlans_added--;
1531
1532 status = be_vid_config(adapter);
1533 done:
1534 mutex_unlock(&adapter->rx_filter_lock);
1535 return status;
1536 }
1537
1538 static void be_set_all_promisc(struct be_adapter *adapter)
1539 {
1540 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);
1541 adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;
1542 }
1543
1544 static void be_set_mc_promisc(struct be_adapter *adapter)
1545 {
1546 int status;
1547
1548 if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)
1549 return;
1550
1551 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);
1552 if (!status)
1553 adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;
1554 }
1555
1556 static void be_set_uc_promisc(struct be_adapter *adapter)
1557 {
1558 int status;
1559
1560 if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS)
1561 return;
1562
1563 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, ON);
1564 if (!status)
1565 adapter->if_flags |= BE_IF_FLAGS_PROMISCUOUS;
1566 }
1567
1568 static void be_clear_uc_promisc(struct be_adapter *adapter)
1569 {
1570 int status;
1571
1572 if (!(adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS))
1573 return;
1574
1575 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, OFF);
1576 if (!status)
1577 adapter->if_flags &= ~BE_IF_FLAGS_PROMISCUOUS;
1578 }
1579
1580 /* The below 2 functions are the callback args for __dev_mc_sync/dev_uc_sync().
1581 * We use a single callback function for both sync and unsync. We really don't
1582 * add/remove addresses through this callback. But, we use it to detect changes
1583 * to the uc/mc lists. The entire uc/mc list is programmed in be_set_rx_mode().
1584 */
1585 static int be_uc_list_update(struct net_device *netdev,
1586 const unsigned char *addr)
1587 {
1588 struct be_adapter *adapter = netdev_priv(netdev);
1589
1590 adapter->update_uc_list = true;
1591 return 0;
1592 }
1593
1594 static int be_mc_list_update(struct net_device *netdev,
1595 const unsigned char *addr)
1596 {
1597 struct be_adapter *adapter = netdev_priv(netdev);
1598
1599 adapter->update_mc_list = true;
1600 return 0;
1601 }
1602
1603 static void be_set_mc_list(struct be_adapter *adapter)
1604 {
1605 struct net_device *netdev = adapter->netdev;
1606 struct netdev_hw_addr *ha;
1607 bool mc_promisc = false;
1608 int status;
1609
1610 netif_addr_lock_bh(netdev);
1611 __dev_mc_sync(netdev, be_mc_list_update, be_mc_list_update);
1612
1613 if (netdev->flags & IFF_PROMISC) {
1614 adapter->update_mc_list = false;
1615 } else if (netdev->flags & IFF_ALLMULTI ||
1616 netdev_mc_count(netdev) > be_max_mc(adapter)) {
1617 /* Enable multicast promisc if num configured exceeds
1618 * what we support
1619 */
1620 mc_promisc = true;
1621 adapter->update_mc_list = false;
1622 } else if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) {
1623 /* Update mc-list unconditionally if the iface was previously
1624 * in mc-promisc mode and now is out of that mode.
1625 */
1626 adapter->update_mc_list = true;
1627 }
1628
1629 if (adapter->update_mc_list) {
1630 int i = 0;
1631
1632 /* cache the mc-list in adapter */
1633 netdev_for_each_mc_addr(ha, netdev) {
1634 ether_addr_copy(adapter->mc_list[i].mac, ha->addr);
1635 i++;
1636 }
1637 adapter->mc_count = netdev_mc_count(netdev);
1638 }
1639 netif_addr_unlock_bh(netdev);
1640
1641 if (mc_promisc) {
1642 be_set_mc_promisc(adapter);
1643 } else if (adapter->update_mc_list) {
1644 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);
1645 if (!status)
1646 adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;
1647 else
1648 be_set_mc_promisc(adapter);
1649
1650 adapter->update_mc_list = false;
1651 }
1652 }
1653
1654 static void be_clear_mc_list(struct be_adapter *adapter)
1655 {
1656 struct net_device *netdev = adapter->netdev;
1657
1658 __dev_mc_unsync(netdev, NULL);
1659 be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, OFF);
1660 adapter->mc_count = 0;
1661 }
1662
1663 static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx)
1664 {
1665 if (ether_addr_equal(adapter->uc_list[uc_idx].mac, adapter->dev_mac)) {
1666 adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0];
1667 return 0;
1668 }
1669
1670 return be_cmd_pmac_add(adapter, adapter->uc_list[uc_idx].mac,
1671 adapter->if_handle,
1672 &adapter->pmac_id[uc_idx + 1], 0);
1673 }
1674
1675 static void be_uc_mac_del(struct be_adapter *adapter, int pmac_id)
1676 {
1677 if (pmac_id == adapter->pmac_id[0])
1678 return;
1679
1680 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
1681 }
1682
1683 static void be_set_uc_list(struct be_adapter *adapter)
1684 {
1685 struct net_device *netdev = adapter->netdev;
1686 struct netdev_hw_addr *ha;
1687 bool uc_promisc = false;
1688 int curr_uc_macs = 0, i;
1689
1690 netif_addr_lock_bh(netdev);
1691 __dev_uc_sync(netdev, be_uc_list_update, be_uc_list_update);
1692
1693 if (netdev->flags & IFF_PROMISC) {
1694 adapter->update_uc_list = false;
1695 } else if (netdev_uc_count(netdev) > (be_max_uc(adapter) - 1)) {
1696 uc_promisc = true;
1697 adapter->update_uc_list = false;
1698 } else if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) {
1699 /* Update uc-list unconditionally if the iface was previously
1700 * in uc-promisc mode and now is out of that mode.
1701 */
1702 adapter->update_uc_list = true;
1703 }
1704
1705 if (adapter->update_uc_list) {
1706 /* cache the uc-list in adapter array */
1707 i = 0;
1708 netdev_for_each_uc_addr(ha, netdev) {
1709 ether_addr_copy(adapter->uc_list[i].mac, ha->addr);
1710 i++;
1711 }
1712 curr_uc_macs = netdev_uc_count(netdev);
1713 }
1714 netif_addr_unlock_bh(netdev);
1715
1716 if (uc_promisc) {
1717 be_set_uc_promisc(adapter);
1718 } else if (adapter->update_uc_list) {
1719 be_clear_uc_promisc(adapter);
1720
1721 for (i = 0; i < adapter->uc_macs; i++)
1722 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1723
1724 for (i = 0; i < curr_uc_macs; i++)
1725 be_uc_mac_add(adapter, i);
1726 adapter->uc_macs = curr_uc_macs;
1727 adapter->update_uc_list = false;
1728 }
1729 }
1730
1731 static void be_clear_uc_list(struct be_adapter *adapter)
1732 {
1733 struct net_device *netdev = adapter->netdev;
1734 int i;
1735
1736 __dev_uc_unsync(netdev, NULL);
1737 for (i = 0; i < adapter->uc_macs; i++)
1738 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1739
1740 adapter->uc_macs = 0;
1741 }
1742
1743 static void __be_set_rx_mode(struct be_adapter *adapter)
1744 {
1745 struct net_device *netdev = adapter->netdev;
1746
1747 mutex_lock(&adapter->rx_filter_lock);
1748
1749 if (netdev->flags & IFF_PROMISC) {
1750 if (!be_in_all_promisc(adapter))
1751 be_set_all_promisc(adapter);
1752 } else if (be_in_all_promisc(adapter)) {
1753 /* We need to re-program the vlan-list or clear
1754 * vlan-promisc mode (if needed) when the interface
1755 * comes out of promisc mode.
1756 */
1757 be_vid_config(adapter);
1758 }
1759
1760 be_set_uc_list(adapter);
1761 be_set_mc_list(adapter);
1762
1763 mutex_unlock(&adapter->rx_filter_lock);
1764 }
1765
1766 static void be_work_set_rx_mode(struct work_struct *work)
1767 {
1768 struct be_cmd_work *cmd_work =
1769 container_of(work, struct be_cmd_work, work);
1770
1771 __be_set_rx_mode(cmd_work->adapter);
1772 kfree(cmd_work);
1773 }
1774
1775 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1776 {
1777 struct be_adapter *adapter = netdev_priv(netdev);
1778 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1779 int status;
1780
1781 if (!sriov_enabled(adapter))
1782 return -EPERM;
1783
1784 if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1785 return -EINVAL;
1786
1787 /* Proceed further only if user provided MAC is different
1788 * from active MAC
1789 */
1790 if (ether_addr_equal(mac, vf_cfg->mac_addr))
1791 return 0;
1792
1793 if (BEx_chip(adapter)) {
1794 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1795 vf + 1);
1796
1797 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1798 &vf_cfg->pmac_id, vf + 1);
1799 } else {
1800 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1801 vf + 1);
1802 }
1803
1804 if (status) {
1805 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",
1806 mac, vf, status);
1807 return be_cmd_status(status);
1808 }
1809
1810 ether_addr_copy(vf_cfg->mac_addr, mac);
1811
1812 return 0;
1813 }
1814
1815 static int be_get_vf_config(struct net_device *netdev, int vf,
1816 struct ifla_vf_info *vi)
1817 {
1818 struct be_adapter *adapter = netdev_priv(netdev);
1819 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1820
1821 if (!sriov_enabled(adapter))
1822 return -EPERM;
1823
1824 if (vf >= adapter->num_vfs)
1825 return -EINVAL;
1826
1827 vi->vf = vf;
1828 vi->max_tx_rate = vf_cfg->tx_rate;
1829 vi->min_tx_rate = 0;
1830 vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1831 vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1832 memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1833 vi->linkstate = adapter->vf_cfg[vf].plink_tracking;
1834 vi->spoofchk = adapter->vf_cfg[vf].spoofchk;
1835
1836 return 0;
1837 }
1838
1839 static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)
1840 {
1841 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1842 u16 vids[BE_NUM_VLANS_SUPPORTED];
1843 int vf_if_id = vf_cfg->if_handle;
1844 int status;
1845
1846 /* Enable Transparent VLAN Tagging */
1847 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);
1848 if (status)
1849 return status;
1850
1851 /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */
1852 vids[0] = 0;
1853 status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);
1854 if (!status)
1855 dev_info(&adapter->pdev->dev,
1856 "Cleared guest VLANs on VF%d", vf);
1857
1858 /* After TVT is enabled, disallow VFs to program VLAN filters */
1859 if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {
1860 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &
1861 ~BE_PRIV_FILTMGMT, vf + 1);
1862 if (!status)
1863 vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;
1864 }
1865 return 0;
1866 }
1867
1868 static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)
1869 {
1870 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1871 struct device *dev = &adapter->pdev->dev;
1872 int status;
1873
1874 /* Reset Transparent VLAN Tagging. */
1875 status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,
1876 vf_cfg->if_handle, 0, 0);
1877 if (status)
1878 return status;
1879
1880 /* Allow VFs to program VLAN filtering */
1881 if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
1882 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |
1883 BE_PRIV_FILTMGMT, vf + 1);
1884 if (!status) {
1885 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
1886 dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);
1887 }
1888 }
1889
1890 dev_info(dev,
1891 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");
1892 return 0;
1893 }
1894
1895 static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
1896 __be16 vlan_proto)
1897 {
1898 struct be_adapter *adapter = netdev_priv(netdev);
1899 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1900 int status;
1901
1902 if (!sriov_enabled(adapter))
1903 return -EPERM;
1904
1905 if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1906 return -EINVAL;
1907
1908 if (vlan_proto != htons(ETH_P_8021Q))
1909 return -EPROTONOSUPPORT;
1910
1911 if (vlan || qos) {
1912 vlan |= qos << VLAN_PRIO_SHIFT;
1913 status = be_set_vf_tvt(adapter, vf, vlan);
1914 } else {
1915 status = be_clear_vf_tvt(adapter, vf);
1916 }
1917
1918 if (status) {
1919 dev_err(&adapter->pdev->dev,
1920 "VLAN %d config on VF %d failed : %#x\n", vlan, vf,
1921 status);
1922 return be_cmd_status(status);
1923 }
1924
1925 vf_cfg->vlan_tag = vlan;
1926 return 0;
1927 }
1928
1929 static int be_set_vf_tx_rate(struct net_device *netdev, int vf,
1930 int min_tx_rate, int max_tx_rate)
1931 {
1932 struct be_adapter *adapter = netdev_priv(netdev);
1933 struct device *dev = &adapter->pdev->dev;
1934 int percent_rate, status = 0;
1935 u16 link_speed = 0;
1936 u8 link_status;
1937
1938 if (!sriov_enabled(adapter))
1939 return -EPERM;
1940
1941 if (vf >= adapter->num_vfs)
1942 return -EINVAL;
1943
1944 if (min_tx_rate)
1945 return -EINVAL;
1946
1947 if (!max_tx_rate)
1948 goto config_qos;
1949
1950 status = be_cmd_link_status_query(adapter, &link_speed,
1951 &link_status, 0);
1952 if (status)
1953 goto err;
1954
1955 if (!link_status) {
1956 dev_err(dev, "TX-rate setting not allowed when link is down\n");
1957 status = -ENETDOWN;
1958 goto err;
1959 }
1960
1961 if (max_tx_rate < 100 || max_tx_rate > link_speed) {
1962 dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",
1963 link_speed);
1964 status = -EINVAL;
1965 goto err;
1966 }
1967
1968 /* On Skyhawk the QOS setting must be done only as a % value */
1969 percent_rate = link_speed / 100;
1970 if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {
1971 dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",
1972 percent_rate);
1973 status = -EINVAL;
1974 goto err;
1975 }
1976
1977 config_qos:
1978 status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);
1979 if (status)
1980 goto err;
1981
1982 adapter->vf_cfg[vf].tx_rate = max_tx_rate;
1983 return 0;
1984
1985 err:
1986 dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",
1987 max_tx_rate, vf);
1988 return be_cmd_status(status);
1989 }
1990
1991 static int be_set_vf_link_state(struct net_device *netdev, int vf,
1992 int link_state)
1993 {
1994 struct be_adapter *adapter = netdev_priv(netdev);
1995 int status;
1996
1997 if (!sriov_enabled(adapter))
1998 return -EPERM;
1999
2000 if (vf >= adapter->num_vfs)
2001 return -EINVAL;
2002
2003 status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);
2004 if (status) {
2005 dev_err(&adapter->pdev->dev,
2006 "Link state change on VF %d failed: %#x\n", vf, status);
2007 return be_cmd_status(status);
2008 }
2009
2010 adapter->vf_cfg[vf].plink_tracking = link_state;
2011
2012 return 0;
2013 }
2014
2015 static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
2016 {
2017 struct be_adapter *adapter = netdev_priv(netdev);
2018 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
2019 u8 spoofchk;
2020 int status;
2021
2022 if (!sriov_enabled(adapter))
2023 return -EPERM;
2024
2025 if (vf >= adapter->num_vfs)
2026 return -EINVAL;
2027
2028 if (BEx_chip(adapter))
2029 return -EOPNOTSUPP;
2030
2031 if (enable == vf_cfg->spoofchk)
2032 return 0;
2033
2034 spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;
2035
2036 status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,
2037 0, spoofchk);
2038 if (status) {
2039 dev_err(&adapter->pdev->dev,
2040 "Spoofchk change on VF %d failed: %#x\n", vf, status);
2041 return be_cmd_status(status);
2042 }
2043
2044 vf_cfg->spoofchk = enable;
2045 return 0;
2046 }
2047
2048 static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
2049 ulong now)
2050 {
2051 aic->rx_pkts_prev = rx_pkts;
2052 aic->tx_reqs_prev = tx_pkts;
2053 aic->jiffies = now;
2054 }
2055
2056 static int be_get_new_eqd(struct be_eq_obj *eqo)
2057 {
2058 struct be_adapter *adapter = eqo->adapter;
2059 int eqd, start;
2060 struct be_aic_obj *aic;
2061 struct be_rx_obj *rxo;
2062 struct be_tx_obj *txo;
2063 u64 rx_pkts = 0, tx_pkts = 0;
2064 ulong now;
2065 u32 pps, delta;
2066 int i;
2067
2068 aic = &adapter->aic_obj[eqo->idx];
2069 if (!aic->enable) {
2070 if (aic->jiffies)
2071 aic->jiffies = 0;
2072 eqd = aic->et_eqd;
2073 return eqd;
2074 }
2075
2076 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
2077 do {
2078 start = u64_stats_fetch_begin_irq(&rxo->stats.sync);
2079 rx_pkts += rxo->stats.rx_pkts;
2080 } while (u64_stats_fetch_retry_irq(&rxo->stats.sync, start));
2081 }
2082
2083 for_all_tx_queues_on_eq(adapter, eqo, txo, i) {
2084 do {
2085 start = u64_stats_fetch_begin_irq(&txo->stats.sync);
2086 tx_pkts += txo->stats.tx_reqs;
2087 } while (u64_stats_fetch_retry_irq(&txo->stats.sync, start));
2088 }
2089
2090 /* Skip, if wrapped around or first calculation */
2091 now = jiffies;
2092 if (!aic->jiffies || time_before(now, aic->jiffies) ||
2093 rx_pkts < aic->rx_pkts_prev ||
2094 tx_pkts < aic->tx_reqs_prev) {
2095 be_aic_update(aic, rx_pkts, tx_pkts, now);
2096 return aic->prev_eqd;
2097 }
2098
2099 delta = jiffies_to_msecs(now - aic->jiffies);
2100 if (delta == 0)
2101 return aic->prev_eqd;
2102
2103 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
2104 (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
2105 eqd = (pps / 15000) << 2;
2106
2107 if (eqd < 8)
2108 eqd = 0;
2109 eqd = min_t(u32, eqd, aic->max_eqd);
2110 eqd = max_t(u32, eqd, aic->min_eqd);
2111
2112 be_aic_update(aic, rx_pkts, tx_pkts, now);
2113
2114 return eqd;
2115 }
2116
2117 /* For Skyhawk-R only */
2118 static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)
2119 {
2120 struct be_adapter *adapter = eqo->adapter;
2121 struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];
2122 ulong now = jiffies;
2123 int eqd;
2124 u32 mult_enc;
2125
2126 if (!aic->enable)
2127 return 0;
2128
2129 if (jiffies_to_msecs(now - aic->jiffies) < 1)
2130 eqd = aic->prev_eqd;
2131 else
2132 eqd = be_get_new_eqd(eqo);
2133
2134 if (eqd > 100)
2135 mult_enc = R2I_DLY_ENC_1;
2136 else if (eqd > 60)
2137 mult_enc = R2I_DLY_ENC_2;
2138 else if (eqd > 20)
2139 mult_enc = R2I_DLY_ENC_3;
2140 else
2141 mult_enc = R2I_DLY_ENC_0;
2142
2143 aic->prev_eqd = eqd;
2144
2145 return mult_enc;
2146 }
2147
2148 void be_eqd_update(struct be_adapter *adapter, bool force_update)
2149 {
2150 struct be_set_eqd set_eqd[MAX_EVT_QS];
2151 struct be_aic_obj *aic;
2152 struct be_eq_obj *eqo;
2153 int i, num = 0, eqd;
2154
2155 for_all_evt_queues(adapter, eqo, i) {
2156 aic = &adapter->aic_obj[eqo->idx];
2157 eqd = be_get_new_eqd(eqo);
2158 if (force_update || eqd != aic->prev_eqd) {
2159 set_eqd[num].delay_multiplier = (eqd * 65)/100;
2160 set_eqd[num].eq_id = eqo->q.id;
2161 aic->prev_eqd = eqd;
2162 num++;
2163 }
2164 }
2165
2166 if (num)
2167 be_cmd_modify_eqd(adapter, set_eqd, num);
2168 }
2169
2170 static void be_rx_stats_update(struct be_rx_obj *rxo,
2171 struct be_rx_compl_info *rxcp)
2172 {
2173 struct be_rx_stats *stats = rx_stats(rxo);
2174
2175 u64_stats_update_begin(&stats->sync);
2176 stats->rx_compl++;
2177 stats->rx_bytes += rxcp->pkt_size;
2178 stats->rx_pkts++;
2179 if (rxcp->tunneled)
2180 stats->rx_vxlan_offload_pkts++;
2181 if (rxcp->pkt_type == BE_MULTICAST_PACKET)
2182 stats->rx_mcast_pkts++;
2183 if (rxcp->err)
2184 stats->rx_compl_err++;
2185 u64_stats_update_end(&stats->sync);
2186 }
2187
2188 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
2189 {
2190 /* L4 checksum is not reliable for non TCP/UDP packets.
2191 * Also ignore ipcksm for ipv6 pkts
2192 */
2193 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
2194 (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
2195 }
2196
2197 static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
2198 {
2199 struct be_adapter *adapter = rxo->adapter;
2200 struct be_rx_page_info *rx_page_info;
2201 struct be_queue_info *rxq = &rxo->q;
2202 u32 frag_idx = rxq->tail;
2203
2204 rx_page_info = &rxo->page_info_tbl[frag_idx];
2205 BUG_ON(!rx_page_info->page);
2206
2207 if (rx_page_info->last_frag) {
2208 dma_unmap_page(&adapter->pdev->dev,
2209 dma_unmap_addr(rx_page_info, bus),
2210 adapter->big_page_size, DMA_FROM_DEVICE);
2211 rx_page_info->last_frag = false;
2212 } else {
2213 dma_sync_single_for_cpu(&adapter->pdev->dev,
2214 dma_unmap_addr(rx_page_info, bus),
2215 rx_frag_size, DMA_FROM_DEVICE);
2216 }
2217
2218 queue_tail_inc(rxq);
2219 atomic_dec(&rxq->used);
2220 return rx_page_info;
2221 }
2222
2223 /* Throwaway the data in the Rx completion */
2224 static void be_rx_compl_discard(struct be_rx_obj *rxo,
2225 struct be_rx_compl_info *rxcp)
2226 {
2227 struct be_rx_page_info *page_info;
2228 u16 i, num_rcvd = rxcp->num_rcvd;
2229
2230 for (i = 0; i < num_rcvd; i++) {
2231 page_info = get_rx_page_info(rxo);
2232 put_page(page_info->page);
2233 memset(page_info, 0, sizeof(*page_info));
2234 }
2235 }
2236
2237 /*
2238 * skb_fill_rx_data forms a complete skb for an ether frame
2239 * indicated by rxcp.
2240 */
2241 static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
2242 struct be_rx_compl_info *rxcp)
2243 {
2244 struct be_rx_page_info *page_info;
2245 u16 i, j;
2246 u16 hdr_len, curr_frag_len, remaining;
2247 u8 *start;
2248
2249 page_info = get_rx_page_info(rxo);
2250 start = page_address(page_info->page) + page_info->page_offset;
2251 prefetch(start);
2252
2253 /* Copy data in the first descriptor of this completion */
2254 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
2255
2256 skb->len = curr_frag_len;
2257 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
2258 memcpy(skb->data, start, curr_frag_len);
2259 /* Complete packet has now been moved to data */
2260 put_page(page_info->page);
2261 skb->data_len = 0;
2262 skb->tail += curr_frag_len;
2263 } else {
2264 hdr_len = ETH_HLEN;
2265 memcpy(skb->data, start, hdr_len);
2266 skb_shinfo(skb)->nr_frags = 1;
2267 skb_frag_set_page(skb, 0, page_info->page);
2268 skb_shinfo(skb)->frags[0].page_offset =
2269 page_info->page_offset + hdr_len;
2270 skb_frag_size_set(&skb_shinfo(skb)->frags[0],
2271 curr_frag_len - hdr_len);
2272 skb->data_len = curr_frag_len - hdr_len;
2273 skb->truesize += rx_frag_size;
2274 skb->tail += hdr_len;
2275 }
2276 page_info->page = NULL;
2277
2278 if (rxcp->pkt_size <= rx_frag_size) {
2279 BUG_ON(rxcp->num_rcvd != 1);
2280 return;
2281 }
2282
2283 /* More frags present for this completion */
2284 remaining = rxcp->pkt_size - curr_frag_len;
2285 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
2286 page_info = get_rx_page_info(rxo);
2287 curr_frag_len = min(remaining, rx_frag_size);
2288
2289 /* Coalesce all frags from the same physical page in one slot */
2290 if (page_info->page_offset == 0) {
2291 /* Fresh page */
2292 j++;
2293 skb_frag_set_page(skb, j, page_info->page);
2294 skb_shinfo(skb)->frags[j].page_offset =
2295 page_info->page_offset;
2296 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2297 skb_shinfo(skb)->nr_frags++;
2298 } else {
2299 put_page(page_info->page);
2300 }
2301
2302 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2303 skb->len += curr_frag_len;
2304 skb->data_len += curr_frag_len;
2305 skb->truesize += rx_frag_size;
2306 remaining -= curr_frag_len;
2307 page_info->page = NULL;
2308 }
2309 BUG_ON(j > MAX_SKB_FRAGS);
2310 }
2311
2312 /* Process the RX completion indicated by rxcp when GRO is disabled */
2313 static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
2314 struct be_rx_compl_info *rxcp)
2315 {
2316 struct be_adapter *adapter = rxo->adapter;
2317 struct net_device *netdev = adapter->netdev;
2318 struct sk_buff *skb;
2319
2320 skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
2321 if (unlikely(!skb)) {
2322 rx_stats(rxo)->rx_drops_no_skbs++;
2323 be_rx_compl_discard(rxo, rxcp);
2324 return;
2325 }
2326
2327 skb_fill_rx_data(rxo, skb, rxcp);
2328
2329 if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
2330 skb->ip_summed = CHECKSUM_UNNECESSARY;
2331 else
2332 skb_checksum_none_assert(skb);
2333
2334 skb->protocol = eth_type_trans(skb, netdev);
2335 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2336 if (netdev->features & NETIF_F_RXHASH)
2337 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2338
2339 skb->csum_level = rxcp->tunneled;
2340 skb_mark_napi_id(skb, napi);
2341
2342 if (rxcp->vlanf)
2343 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2344
2345 netif_receive_skb(skb);
2346 }
2347
2348 /* Process the RX completion indicated by rxcp when GRO is enabled */
2349 static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
2350 struct napi_struct *napi,
2351 struct be_rx_compl_info *rxcp)
2352 {
2353 struct be_adapter *adapter = rxo->adapter;
2354 struct be_rx_page_info *page_info;
2355 struct sk_buff *skb = NULL;
2356 u16 remaining, curr_frag_len;
2357 u16 i, j;
2358
2359 skb = napi_get_frags(napi);
2360 if (!skb) {
2361 be_rx_compl_discard(rxo, rxcp);
2362 return;
2363 }
2364
2365 remaining = rxcp->pkt_size;
2366 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
2367 page_info = get_rx_page_info(rxo);
2368
2369 curr_frag_len = min(remaining, rx_frag_size);
2370
2371 /* Coalesce all frags from the same physical page in one slot */
2372 if (i == 0 || page_info->page_offset == 0) {
2373 /* First frag or Fresh page */
2374 j++;
2375 skb_frag_set_page(skb, j, page_info->page);
2376 skb_shinfo(skb)->frags[j].page_offset =
2377 page_info->page_offset;
2378 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2379 } else {
2380 put_page(page_info->page);
2381 }
2382 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2383 skb->truesize += rx_frag_size;
2384 remaining -= curr_frag_len;
2385 memset(page_info, 0, sizeof(*page_info));
2386 }
2387 BUG_ON(j > MAX_SKB_FRAGS);
2388
2389 skb_shinfo(skb)->nr_frags = j + 1;
2390 skb->len = rxcp->pkt_size;
2391 skb->data_len = rxcp->pkt_size;
2392 skb->ip_summed = CHECKSUM_UNNECESSARY;
2393 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2394 if (adapter->netdev->features & NETIF_F_RXHASH)
2395 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2396
2397 skb->csum_level = rxcp->tunneled;
2398
2399 if (rxcp->vlanf)
2400 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2401
2402 napi_gro_frags(napi);
2403 }
2404
2405 static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
2406 struct be_rx_compl_info *rxcp)
2407 {
2408 rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);
2409 rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);
2410 rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);
2411 rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);
2412 rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);
2413 rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);
2414 rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);
2415 rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);
2416 rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);
2417 rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);
2418 rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);
2419 if (rxcp->vlanf) {
2420 rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);
2421 rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);
2422 }
2423 rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);
2424 rxcp->tunneled =
2425 GET_RX_COMPL_V1_BITS(tunneled, compl);
2426 }
2427
2428 static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
2429 struct be_rx_compl_info *rxcp)
2430 {
2431 rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);
2432 rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);
2433 rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);
2434 rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);
2435 rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);
2436 rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);
2437 rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);
2438 rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);
2439 rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);
2440 rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);
2441 rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);
2442 if (rxcp->vlanf) {
2443 rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);
2444 rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);
2445 }
2446 rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);
2447 rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);
2448 }
2449
2450 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
2451 {
2452 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
2453 struct be_rx_compl_info *rxcp = &rxo->rxcp;
2454 struct be_adapter *adapter = rxo->adapter;
2455
2456 /* For checking the valid bit it is Ok to use either definition as the
2457 * valid bit is at the same position in both v0 and v1 Rx compl */
2458 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
2459 return NULL;
2460
2461 rmb();
2462 be_dws_le_to_cpu(compl, sizeof(*compl));
2463
2464 if (adapter->be3_native)
2465 be_parse_rx_compl_v1(compl, rxcp);
2466 else
2467 be_parse_rx_compl_v0(compl, rxcp);
2468
2469 if (rxcp->ip_frag)
2470 rxcp->l4_csum = 0;
2471
2472 if (rxcp->vlanf) {
2473 /* In QNQ modes, if qnq bit is not set, then the packet was
2474 * tagged only with the transparent outer vlan-tag and must
2475 * not be treated as a vlan packet by host
2476 */
2477 if (be_is_qnq_mode(adapter) && !rxcp->qnq)
2478 rxcp->vlanf = 0;
2479
2480 if (!lancer_chip(adapter))
2481 rxcp->vlan_tag = swab16(rxcp->vlan_tag);
2482
2483 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
2484 !test_bit(rxcp->vlan_tag, adapter->vids))
2485 rxcp->vlanf = 0;
2486 }
2487
2488 /* As the compl has been parsed, reset it; we wont touch it again */
2489 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
2490
2491 queue_tail_inc(&rxo->cq);
2492 return rxcp;
2493 }
2494
2495 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
2496 {
2497 u32 order = get_order(size);
2498
2499 if (order > 0)
2500 gfp |= __GFP_COMP;
2501 return alloc_pages(gfp, order);
2502 }
2503
2504 /*
2505 * Allocate a page, split it to fragments of size rx_frag_size and post as
2506 * receive buffers to BE
2507 */
2508 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
2509 {
2510 struct be_adapter *adapter = rxo->adapter;
2511 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
2512 struct be_queue_info *rxq = &rxo->q;
2513 struct page *pagep = NULL;
2514 struct device *dev = &adapter->pdev->dev;
2515 struct be_eth_rx_d *rxd;
2516 u64 page_dmaaddr = 0, frag_dmaaddr;
2517 u32 posted, page_offset = 0, notify = 0;
2518
2519 page_info = &rxo->page_info_tbl[rxq->head];
2520 for (posted = 0; posted < frags_needed && !page_info->page; posted++) {
2521 if (!pagep) {
2522 pagep = be_alloc_pages(adapter->big_page_size, gfp);
2523 if (unlikely(!pagep)) {
2524 rx_stats(rxo)->rx_post_fail++;
2525 break;
2526 }
2527 page_dmaaddr = dma_map_page(dev, pagep, 0,
2528 adapter->big_page_size,
2529 DMA_FROM_DEVICE);
2530 if (dma_mapping_error(dev, page_dmaaddr)) {
2531 put_page(pagep);
2532 pagep = NULL;
2533 adapter->drv_stats.dma_map_errors++;
2534 break;
2535 }
2536 page_offset = 0;
2537 } else {
2538 get_page(pagep);
2539 page_offset += rx_frag_size;
2540 }
2541 page_info->page_offset = page_offset;
2542 page_info->page = pagep;
2543
2544 rxd = queue_head_node(rxq);
2545 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
2546 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
2547 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
2548
2549 /* Any space left in the current big page for another frag? */
2550 if ((page_offset + rx_frag_size + rx_frag_size) >
2551 adapter->big_page_size) {
2552 pagep = NULL;
2553 page_info->last_frag = true;
2554 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
2555 } else {
2556 dma_unmap_addr_set(page_info, bus, frag_dmaaddr);
2557 }
2558
2559 prev_page_info = page_info;
2560 queue_head_inc(rxq);
2561 page_info = &rxo->page_info_tbl[rxq->head];
2562 }
2563
2564 /* Mark the last frag of a page when we break out of the above loop
2565 * with no more slots available in the RXQ
2566 */
2567 if (pagep) {
2568 prev_page_info->last_frag = true;
2569 dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);
2570 }
2571
2572 if (posted) {
2573 atomic_add(posted, &rxq->used);
2574 if (rxo->rx_post_starved)
2575 rxo->rx_post_starved = false;
2576 do {
2577 notify = min(MAX_NUM_POST_ERX_DB, posted);
2578 be_rxq_notify(adapter, rxq->id, notify);
2579 posted -= notify;
2580 } while (posted);
2581 } else if (atomic_read(&rxq->used) == 0) {
2582 /* Let be_worker replenish when memory is available */
2583 rxo->rx_post_starved = true;
2584 }
2585 }
2586
2587 static struct be_tx_compl_info *be_tx_compl_get(struct be_tx_obj *txo)
2588 {
2589 struct be_queue_info *tx_cq = &txo->cq;
2590 struct be_tx_compl_info *txcp = &txo->txcp;
2591 struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);
2592
2593 if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
2594 return NULL;
2595
2596 /* Ensure load ordering of valid bit dword and other dwords below */
2597 rmb();
2598 be_dws_le_to_cpu(compl, sizeof(*compl));
2599
2600 txcp->status = GET_TX_COMPL_BITS(status, compl);
2601 txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);
2602
2603 compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
2604 queue_tail_inc(tx_cq);
2605 return txcp;
2606 }
2607
2608 static u16 be_tx_compl_process(struct be_adapter *adapter,
2609 struct be_tx_obj *txo, u16 last_index)
2610 {
2611 struct sk_buff **sent_skbs = txo->sent_skb_list;
2612 struct be_queue_info *txq = &txo->q;
2613 struct sk_buff *skb = NULL;
2614 bool unmap_skb_hdr = false;
2615 struct be_eth_wrb *wrb;
2616 u16 num_wrbs = 0;
2617 u32 frag_index;
2618
2619 do {
2620 if (sent_skbs[txq->tail]) {
2621 /* Free skb from prev req */
2622 if (skb)
2623 dev_consume_skb_any(skb);
2624 skb = sent_skbs[txq->tail];
2625 sent_skbs[txq->tail] = NULL;
2626 queue_tail_inc(txq); /* skip hdr wrb */
2627 num_wrbs++;
2628 unmap_skb_hdr = true;
2629 }
2630 wrb = queue_tail_node(txq);
2631 frag_index = txq->tail;
2632 unmap_tx_frag(&adapter->pdev->dev, wrb,
2633 (unmap_skb_hdr && skb_headlen(skb)));
2634 unmap_skb_hdr = false;
2635 queue_tail_inc(txq);
2636 num_wrbs++;
2637 } while (frag_index != last_index);
2638 dev_consume_skb_any(skb);
2639
2640 return num_wrbs;
2641 }
2642
2643 /* Return the number of events in the event queue */
2644 static inline int events_get(struct be_eq_obj *eqo)
2645 {
2646 struct be_eq_entry *eqe;
2647 int num = 0;
2648
2649 do {
2650 eqe = queue_tail_node(&eqo->q);
2651 if (eqe->evt == 0)
2652 break;
2653
2654 rmb();
2655 eqe->evt = 0;
2656 num++;
2657 queue_tail_inc(&eqo->q);
2658 } while (true);
2659
2660 return num;
2661 }
2662
2663 /* Leaves the EQ is disarmed state */
2664 static void be_eq_clean(struct be_eq_obj *eqo)
2665 {
2666 int num = events_get(eqo);
2667
2668 be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
2669 }
2670
2671 /* Free posted rx buffers that were not used */
2672 static void be_rxq_clean(struct be_rx_obj *rxo)
2673 {
2674 struct be_queue_info *rxq = &rxo->q;
2675 struct be_rx_page_info *page_info;
2676
2677 while (atomic_read(&rxq->used) > 0) {
2678 page_info = get_rx_page_info(rxo);
2679 put_page(page_info->page);
2680 memset(page_info, 0, sizeof(*page_info));
2681 }
2682 BUG_ON(atomic_read(&rxq->used));
2683 rxq->tail = 0;
2684 rxq->head = 0;
2685 }
2686
2687 static void be_rx_cq_clean(struct be_rx_obj *rxo)
2688 {
2689 struct be_queue_info *rx_cq = &rxo->cq;
2690 struct be_rx_compl_info *rxcp;
2691 struct be_adapter *adapter = rxo->adapter;
2692 int flush_wait = 0;
2693
2694 /* Consume pending rx completions.
2695 * Wait for the flush completion (identified by zero num_rcvd)
2696 * to arrive. Notify CQ even when there are no more CQ entries
2697 * for HW to flush partially coalesced CQ entries.
2698 * In Lancer, there is no need to wait for flush compl.
2699 */
2700 for (;;) {
2701 rxcp = be_rx_compl_get(rxo);
2702 if (!rxcp) {
2703 if (lancer_chip(adapter))
2704 break;
2705
2706 if (flush_wait++ > 50 ||
2707 be_check_error(adapter,
2708 BE_ERROR_HW)) {
2709 dev_warn(&adapter->pdev->dev,
2710 "did not receive flush compl\n");
2711 break;
2712 }
2713 be_cq_notify(adapter, rx_cq->id, true, 0);
2714 mdelay(1);
2715 } else {
2716 be_rx_compl_discard(rxo, rxcp);
2717 be_cq_notify(adapter, rx_cq->id, false, 1);
2718 if (rxcp->num_rcvd == 0)
2719 break;
2720 }
2721 }
2722
2723 /* After cleanup, leave the CQ in unarmed state */
2724 be_cq_notify(adapter, rx_cq->id, false, 0);
2725 }
2726
2727 static void be_tx_compl_clean(struct be_adapter *adapter)
2728 {
2729 struct device *dev = &adapter->pdev->dev;
2730 u16 cmpl = 0, timeo = 0, num_wrbs = 0;
2731 struct be_tx_compl_info *txcp;
2732 struct be_queue_info *txq;
2733 u32 end_idx, notified_idx;
2734 struct be_tx_obj *txo;
2735 int i, pending_txqs;
2736
2737 /* Stop polling for compls when HW has been silent for 10ms */
2738 do {
2739 pending_txqs = adapter->num_tx_qs;
2740
2741 for_all_tx_queues(adapter, txo, i) {
2742 cmpl = 0;
2743 num_wrbs = 0;
2744 txq = &txo->q;
2745 while ((txcp = be_tx_compl_get(txo))) {
2746 num_wrbs +=
2747 be_tx_compl_process(adapter, txo,
2748 txcp->end_index);
2749 cmpl++;
2750 }
2751 if (cmpl) {
2752 be_cq_notify(adapter, txo->cq.id, false, cmpl);
2753 atomic_sub(num_wrbs, &txq->used);
2754 timeo = 0;
2755 }
2756 if (!be_is_tx_compl_pending(txo))
2757 pending_txqs--;
2758 }
2759
2760 if (pending_txqs == 0 || ++timeo > 10 ||
2761 be_check_error(adapter, BE_ERROR_HW))
2762 break;
2763
2764 mdelay(1);
2765 } while (true);
2766
2767 /* Free enqueued TX that was never notified to HW */
2768 for_all_tx_queues(adapter, txo, i) {
2769 txq = &txo->q;
2770
2771 if (atomic_read(&txq->used)) {
2772 dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",
2773 i, atomic_read(&txq->used));
2774 notified_idx = txq->tail;
2775 end_idx = txq->tail;
2776 index_adv(&end_idx, atomic_read(&txq->used) - 1,
2777 txq->len);
2778 /* Use the tx-compl process logic to handle requests
2779 * that were not sent to the HW.
2780 */
2781 num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2782 atomic_sub(num_wrbs, &txq->used);
2783 BUG_ON(atomic_read(&txq->used));
2784 txo->pend_wrb_cnt = 0;
2785 /* Since hw was never notified of these requests,
2786 * reset TXQ indices
2787 */
2788 txq->head = notified_idx;
2789 txq->tail = notified_idx;
2790 }
2791 }
2792 }
2793
2794 static void be_evt_queues_destroy(struct be_adapter *adapter)
2795 {
2796 struct be_eq_obj *eqo;
2797 int i;
2798
2799 for_all_evt_queues(adapter, eqo, i) {
2800 if (eqo->q.created) {
2801 be_eq_clean(eqo);
2802 be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2803 netif_napi_del(&eqo->napi);
2804 free_cpumask_var(eqo->affinity_mask);
2805 }
2806 be_queue_free(adapter, &eqo->q);
2807 }
2808 }
2809
2810 static int be_evt_queues_create(struct be_adapter *adapter)
2811 {
2812 struct be_queue_info *eq;
2813 struct be_eq_obj *eqo;
2814 struct be_aic_obj *aic;
2815 int i, rc;
2816
2817 /* need enough EQs to service both RX and TX queues */
2818 adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2819 max(adapter->cfg_num_rx_irqs,
2820 adapter->cfg_num_tx_irqs));
2821
2822 for_all_evt_queues(adapter, eqo, i) {
2823 int numa_node = dev_to_node(&adapter->pdev->dev);
2824
2825 aic = &adapter->aic_obj[i];
2826 eqo->adapter = adapter;
2827 eqo->idx = i;
2828 aic->max_eqd = BE_MAX_EQD;
2829 aic->enable = true;
2830
2831 eq = &eqo->q;
2832 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2833 sizeof(struct be_eq_entry));
2834 if (rc)
2835 return rc;
2836
2837 rc = be_cmd_eq_create(adapter, eqo);
2838 if (rc)
2839 return rc;
2840
2841 if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
2842 return -ENOMEM;
2843 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
2844 eqo->affinity_mask);
2845 netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
2846 BE_NAPI_WEIGHT);
2847 }
2848 return 0;
2849 }
2850
2851 static void be_mcc_queues_destroy(struct be_adapter *adapter)
2852 {
2853 struct be_queue_info *q;
2854
2855 q = &adapter->mcc_obj.q;
2856 if (q->created)
2857 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
2858 be_queue_free(adapter, q);
2859
2860 q = &adapter->mcc_obj.cq;
2861 if (q->created)
2862 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2863 be_queue_free(adapter, q);
2864 }
2865
2866 /* Must be called only after TX qs are created as MCC shares TX EQ */
2867 static int be_mcc_queues_create(struct be_adapter *adapter)
2868 {
2869 struct be_queue_info *q, *cq;
2870
2871 cq = &adapter->mcc_obj.cq;
2872 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
2873 sizeof(struct be_mcc_compl)))
2874 goto err;
2875
2876 /* Use the default EQ for MCC completions */
2877 if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
2878 goto mcc_cq_free;
2879
2880 q = &adapter->mcc_obj.q;
2881 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
2882 goto mcc_cq_destroy;
2883
2884 if (be_cmd_mccq_create(adapter, q, cq))
2885 goto mcc_q_free;
2886
2887 return 0;
2888
2889 mcc_q_free:
2890 be_queue_free(adapter, q);
2891 mcc_cq_destroy:
2892 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
2893 mcc_cq_free:
2894 be_queue_free(adapter, cq);
2895 err:
2896 return -1;
2897 }
2898
2899 static void be_tx_queues_destroy(struct be_adapter *adapter)
2900 {
2901 struct be_queue_info *q;
2902 struct be_tx_obj *txo;
2903 u8 i;
2904
2905 for_all_tx_queues(adapter, txo, i) {
2906 q = &txo->q;
2907 if (q->created)
2908 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
2909 be_queue_free(adapter, q);
2910
2911 q = &txo->cq;
2912 if (q->created)
2913 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2914 be_queue_free(adapter, q);
2915 }
2916 }
2917
2918 static int be_tx_qs_create(struct be_adapter *adapter)
2919 {
2920 struct be_queue_info *cq;
2921 struct be_tx_obj *txo;
2922 struct be_eq_obj *eqo;
2923 int status, i;
2924
2925 adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs);
2926
2927 for_all_tx_queues(adapter, txo, i) {
2928 cq = &txo->cq;
2929 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
2930 sizeof(struct be_eth_tx_compl));
2931 if (status)
2932 return status;
2933
2934 u64_stats_init(&txo->stats.sync);
2935 u64_stats_init(&txo->stats.sync_compl);
2936
2937 /* If num_evt_qs is less than num_tx_qs, then more than
2938 * one txq share an eq
2939 */
2940 eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
2941 status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
2942 if (status)
2943 return status;
2944
2945 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
2946 sizeof(struct be_eth_wrb));
2947 if (status)
2948 return status;
2949
2950 status = be_cmd_txq_create(adapter, txo);
2951 if (status)
2952 return status;
2953
2954 netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
2955 eqo->idx);
2956 }
2957
2958 dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
2959 adapter->num_tx_qs);
2960 return 0;
2961 }
2962
2963 static void be_rx_cqs_destroy(struct be_adapter *adapter)
2964 {
2965 struct be_queue_info *q;
2966 struct be_rx_obj *rxo;
2967 int i;
2968
2969 for_all_rx_queues(adapter, rxo, i) {
2970 q = &rxo->cq;
2971 if (q->created)
2972 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2973 be_queue_free(adapter, q);
2974 }
2975 }
2976
2977 static int be_rx_cqs_create(struct be_adapter *adapter)
2978 {
2979 struct be_queue_info *eq, *cq;
2980 struct be_rx_obj *rxo;
2981 int rc, i;
2982
2983 adapter->num_rss_qs =
2984 min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs);
2985
2986 /* We'll use RSS only if atleast 2 RSS rings are supported. */
2987 if (adapter->num_rss_qs < 2)
2988 adapter->num_rss_qs = 0;
2989
2990 adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;
2991
2992 /* When the interface is not capable of RSS rings (and there is no
2993 * need to create a default RXQ) we'll still need one RXQ
2994 */
2995 if (adapter->num_rx_qs == 0)
2996 adapter->num_rx_qs = 1;
2997
2998 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
2999 for_all_rx_queues(adapter, rxo, i) {
3000 rxo->adapter = adapter;
3001 cq = &rxo->cq;
3002 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
3003 sizeof(struct be_eth_rx_compl));
3004 if (rc)
3005 return rc;
3006
3007 u64_stats_init(&rxo->stats.sync);
3008 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
3009 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
3010 if (rc)
3011 return rc;
3012 }
3013
3014 dev_info(&adapter->pdev->dev,
3015 "created %d RX queue(s)\n", adapter->num_rx_qs);
3016 return 0;
3017 }
3018
3019 static irqreturn_t be_intx(int irq, void *dev)
3020 {
3021 struct be_eq_obj *eqo = dev;
3022 struct be_adapter *adapter = eqo->adapter;
3023 int num_evts = 0;
3024
3025 /* IRQ is not expected when NAPI is scheduled as the EQ
3026 * will not be armed.
3027 * But, this can happen on Lancer INTx where it takes
3028 * a while to de-assert INTx or in BE2 where occasionaly
3029 * an interrupt may be raised even when EQ is unarmed.
3030 * If NAPI is already scheduled, then counting & notifying
3031 * events will orphan them.
3032 */
3033 if (napi_schedule_prep(&eqo->napi)) {
3034 num_evts = events_get(eqo);
3035 __napi_schedule(&eqo->napi);
3036 if (num_evts)
3037 eqo->spurious_intr = 0;
3038 }
3039 be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);
3040
3041 /* Return IRQ_HANDLED only for the the first spurious intr
3042 * after a valid intr to stop the kernel from branding
3043 * this irq as a bad one!
3044 */
3045 if (num_evts || eqo->spurious_intr++ == 0)
3046 return IRQ_HANDLED;
3047 else
3048 return IRQ_NONE;
3049 }
3050
3051 static irqreturn_t be_msix(int irq, void *dev)
3052 {
3053 struct be_eq_obj *eqo = dev;
3054
3055 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
3056 napi_schedule(&eqo->napi);
3057 return IRQ_HANDLED;
3058 }
3059
3060 static inline bool do_gro(struct be_rx_compl_info *rxcp)
3061 {
3062 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
3063 }
3064
3065 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
3066 int budget)
3067 {
3068 struct be_adapter *adapter = rxo->adapter;
3069 struct be_queue_info *rx_cq = &rxo->cq;
3070 struct be_rx_compl_info *rxcp;
3071 u32 work_done;
3072 u32 frags_consumed = 0;
3073
3074 for (work_done = 0; work_done < budget; work_done++) {
3075 rxcp = be_rx_compl_get(rxo);
3076 if (!rxcp)
3077 break;
3078
3079 /* Is it a flush compl that has no data */
3080 if (unlikely(rxcp->num_rcvd == 0))
3081 goto loop_continue;
3082
3083 /* Discard compl with partial DMA Lancer B0 */
3084 if (unlikely(!rxcp->pkt_size)) {
3085 be_rx_compl_discard(rxo, rxcp);
3086 goto loop_continue;
3087 }
3088
3089 /* On BE drop pkts that arrive due to imperfect filtering in
3090 * promiscuous mode on some skews
3091 */
3092 if (unlikely(rxcp->port != adapter->port_num &&
3093 !lancer_chip(adapter))) {
3094 be_rx_compl_discard(rxo, rxcp);
3095 goto loop_continue;
3096 }
3097
3098 if (do_gro(rxcp))
3099 be_rx_compl_process_gro(rxo, napi, rxcp);
3100 else
3101 be_rx_compl_process(rxo, napi, rxcp);
3102
3103 loop_continue:
3104 frags_consumed += rxcp->num_rcvd;
3105 be_rx_stats_update(rxo, rxcp);
3106 }
3107
3108 if (work_done) {
3109 be_cq_notify(adapter, rx_cq->id, true, work_done);
3110
3111 /* When an rx-obj gets into post_starved state, just
3112 * let be_worker do the posting.
3113 */
3114 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
3115 !rxo->rx_post_starved)
3116 be_post_rx_frags(rxo, GFP_ATOMIC,
3117 max_t(u32, MAX_RX_POST,
3118 frags_consumed));
3119 }
3120
3121 return work_done;
3122 }
3123
3124 static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)
3125 {
3126 switch (status) {
3127 case BE_TX_COMP_HDR_PARSE_ERR:
3128 tx_stats(txo)->tx_hdr_parse_err++;
3129 break;
3130 case BE_TX_COMP_NDMA_ERR:
3131 tx_stats(txo)->tx_dma_err++;
3132 break;
3133 case BE_TX_COMP_ACL_ERR:
3134 tx_stats(txo)->tx_spoof_check_err++;
3135 break;
3136 }
3137 }
3138
3139 static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)
3140 {
3141 switch (status) {
3142 case LANCER_TX_COMP_LSO_ERR:
3143 tx_stats(txo)->tx_tso_err++;
3144 break;
3145 case LANCER_TX_COMP_HSW_DROP_MAC_ERR:
3146 case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:
3147 tx_stats(txo)->tx_spoof_check_err++;
3148 break;
3149 case LANCER_TX_COMP_QINQ_ERR:
3150 tx_stats(txo)->tx_qinq_err++;
3151 break;
3152 case LANCER_TX_COMP_PARITY_ERR:
3153 tx_stats(txo)->tx_internal_parity_err++;
3154 break;
3155 case LANCER_TX_COMP_DMA_ERR:
3156 tx_stats(txo)->tx_dma_err++;
3157 break;
3158 }
3159 }
3160
3161 static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
3162 int idx)
3163 {
3164 int num_wrbs = 0, work_done = 0;
3165 struct be_tx_compl_info *txcp;
3166
3167 while ((txcp = be_tx_compl_get(txo))) {
3168 num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);
3169 work_done++;
3170
3171 if (txcp->status) {
3172 if (lancer_chip(adapter))
3173 lancer_update_tx_err(txo, txcp->status);
3174 else
3175 be_update_tx_err(txo, txcp->status);
3176 }
3177 }
3178
3179 if (work_done) {
3180 be_cq_notify(adapter, txo->cq.id, true, work_done);
3181 atomic_sub(num_wrbs, &txo->q.used);
3182
3183 /* As Tx wrbs have been freed up, wake up netdev queue
3184 * if it was stopped due to lack of tx wrbs. */
3185 if (__netif_subqueue_stopped(adapter->netdev, idx) &&
3186 be_can_txq_wake(txo)) {
3187 netif_wake_subqueue(adapter->netdev, idx);
3188 }
3189
3190 u64_stats_update_begin(&tx_stats(txo)->sync_compl);
3191 tx_stats(txo)->tx_compl += work_done;
3192 u64_stats_update_end(&tx_stats(txo)->sync_compl);
3193 }
3194 }
3195
3196 int be_poll(struct napi_struct *napi, int budget)
3197 {
3198 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3199 struct be_adapter *adapter = eqo->adapter;
3200 int max_work = 0, work, i, num_evts;
3201 struct be_rx_obj *rxo;
3202 struct be_tx_obj *txo;
3203 u32 mult_enc = 0;
3204
3205 num_evts = events_get(eqo);
3206
3207 for_all_tx_queues_on_eq(adapter, eqo, txo, i)
3208 be_process_tx(adapter, txo, i);
3209
3210 /* This loop will iterate twice for EQ0 in which
3211 * completions of the last RXQ (default one) are also processed
3212 * For other EQs the loop iterates only once
3213 */
3214 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3215 work = be_process_rx(rxo, napi, budget);
3216 max_work = max(work, max_work);
3217 }
3218
3219 if (is_mcc_eqo(eqo))
3220 be_process_mcc(adapter);
3221
3222 if (max_work < budget) {
3223 napi_complete_done(napi, max_work);
3224
3225 /* Skyhawk EQ_DB has a provision to set the rearm to interrupt
3226 * delay via a delay multiplier encoding value
3227 */
3228 if (skyhawk_chip(adapter))
3229 mult_enc = be_get_eq_delay_mult_enc(eqo);
3230
3231 be_eq_notify(adapter, eqo->q.id, true, false, num_evts,
3232 mult_enc);
3233 } else {
3234 /* As we'll continue in polling mode, count and clear events */
3235 be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);
3236 }
3237 return max_work;
3238 }
3239
3240 void be_detect_error(struct be_adapter *adapter)
3241 {
3242 u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
3243 u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
3244 u32 i;
3245 struct device *dev = &adapter->pdev->dev;
3246
3247 if (be_check_error(adapter, BE_ERROR_HW))
3248 return;
3249
3250 if (lancer_chip(adapter)) {
3251 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
3252 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
3253 be_set_error(adapter, BE_ERROR_UE);
3254 sliport_err1 = ioread32(adapter->db +
3255 SLIPORT_ERROR1_OFFSET);
3256 sliport_err2 = ioread32(adapter->db +
3257 SLIPORT_ERROR2_OFFSET);
3258 /* Do not log error messages if its a FW reset */
3259 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
3260 sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
3261 dev_info(dev, "Firmware update in progress\n");
3262 } else {
3263 dev_err(dev, "Error detected in the card\n");
3264 dev_err(dev, "ERR: sliport status 0x%x\n",
3265 sliport_status);
3266 dev_err(dev, "ERR: sliport error1 0x%x\n",
3267 sliport_err1);
3268 dev_err(dev, "ERR: sliport error2 0x%x\n",
3269 sliport_err2);
3270 }
3271 }
3272 } else {
3273 ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);
3274 ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);
3275 ue_lo_mask = ioread32(adapter->pcicfg +
3276 PCICFG_UE_STATUS_LOW_MASK);
3277 ue_hi_mask = ioread32(adapter->pcicfg +
3278 PCICFG_UE_STATUS_HI_MASK);
3279
3280 ue_lo = (ue_lo & ~ue_lo_mask);
3281 ue_hi = (ue_hi & ~ue_hi_mask);
3282
3283 /* On certain platforms BE hardware can indicate spurious UEs.
3284 * Allow HW to stop working completely in case of a real UE.
3285 * Hence not setting the hw_error for UE detection.
3286 */
3287
3288 if (ue_lo || ue_hi) {
3289 dev_err(dev, "Error detected in the adapter");
3290 if (skyhawk_chip(adapter))
3291 be_set_error(adapter, BE_ERROR_UE);
3292
3293 for (i = 0; ue_lo; ue_lo >>= 1, i++) {
3294 if (ue_lo & 1)
3295 dev_err(dev, "UE: %s bit set\n",
3296 ue_status_low_desc[i]);
3297 }
3298 for (i = 0; ue_hi; ue_hi >>= 1, i++) {
3299 if (ue_hi & 1)
3300 dev_err(dev, "UE: %s bit set\n",
3301 ue_status_hi_desc[i]);
3302 }
3303 }
3304 }
3305 }
3306
3307 static void be_msix_disable(struct be_adapter *adapter)
3308 {
3309 if (msix_enabled(adapter)) {
3310 pci_disable_msix(adapter->pdev);
3311 adapter->num_msix_vec = 0;
3312 adapter->num_msix_roce_vec = 0;
3313 }
3314 }
3315
3316 static int be_msix_enable(struct be_adapter *adapter)
3317 {
3318 unsigned int i, max_roce_eqs;
3319 struct device *dev = &adapter->pdev->dev;
3320 int num_vec;
3321
3322 /* If RoCE is supported, program the max number of vectors that
3323 * could be used for NIC and RoCE, else, just program the number
3324 * we'll use initially.
3325 */
3326 if (be_roce_supported(adapter)) {
3327 max_roce_eqs =
3328 be_max_func_eqs(adapter) - be_max_nic_eqs(adapter);
3329 max_roce_eqs = min(max_roce_eqs, num_online_cpus());
3330 num_vec = be_max_any_irqs(adapter) + max_roce_eqs;
3331 } else {
3332 num_vec = max(adapter->cfg_num_rx_irqs,
3333 adapter->cfg_num_tx_irqs);
3334 }
3335
3336 for (i = 0; i < num_vec; i++)
3337 adapter->msix_entries[i].entry = i;
3338
3339 num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
3340 MIN_MSIX_VECTORS, num_vec);
3341 if (num_vec < 0)
3342 goto fail;
3343
3344 if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
3345 adapter->num_msix_roce_vec = num_vec / 2;
3346 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
3347 adapter->num_msix_roce_vec);
3348 }
3349
3350 adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
3351
3352 dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
3353 adapter->num_msix_vec);
3354 return 0;
3355
3356 fail:
3357 dev_warn(dev, "MSIx enable failed\n");
3358
3359 /* INTx is not supported in VFs, so fail probe if enable_msix fails */
3360 if (be_virtfn(adapter))
3361 return num_vec;
3362 return 0;
3363 }
3364
3365 static inline int be_msix_vec_get(struct be_adapter *adapter,
3366 struct be_eq_obj *eqo)
3367 {
3368 return adapter->msix_entries[eqo->msix_idx].vector;
3369 }
3370
3371 static int be_msix_register(struct be_adapter *adapter)
3372 {
3373 struct net_device *netdev = adapter->netdev;
3374 struct be_eq_obj *eqo;
3375 int status, i, vec;
3376
3377 for_all_evt_queues(adapter, eqo, i) {
3378 sprintf(eqo->desc, "%s-q%d", netdev->name, i);
3379 vec = be_msix_vec_get(adapter, eqo);
3380 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
3381 if (status)
3382 goto err_msix;
3383
3384 irq_set_affinity_hint(vec, eqo->affinity_mask);
3385 }
3386
3387 return 0;
3388 err_msix:
3389 for (i--; i >= 0; i--) {
3390 eqo = &adapter->eq_obj[i];
3391 free_irq(be_msix_vec_get(adapter, eqo), eqo);
3392 }
3393 dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
3394 status);
3395 be_msix_disable(adapter);
3396 return status;
3397 }
3398
3399 static int be_irq_register(struct be_adapter *adapter)
3400 {
3401 struct net_device *netdev = adapter->netdev;
3402 int status;
3403
3404 if (msix_enabled(adapter)) {
3405 status = be_msix_register(adapter);
3406 if (status == 0)
3407 goto done;
3408 /* INTx is not supported for VF */
3409 if (be_virtfn(adapter))
3410 return status;
3411 }
3412
3413 /* INTx: only the first EQ is used */
3414 netdev->irq = adapter->pdev->irq;
3415 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
3416 &adapter->eq_obj[0]);
3417 if (status) {
3418 dev_err(&adapter->pdev->dev,
3419 "INTx request IRQ failed - err %d\n", status);
3420 return status;
3421 }
3422 done:
3423 adapter->isr_registered = true;
3424 return 0;
3425 }
3426
3427 static void be_irq_unregister(struct be_adapter *adapter)
3428 {
3429 struct net_device *netdev = adapter->netdev;
3430 struct be_eq_obj *eqo;
3431 int i, vec;
3432
3433 if (!adapter->isr_registered)
3434 return;
3435
3436 /* INTx */
3437 if (!msix_enabled(adapter)) {
3438 free_irq(netdev->irq, &adapter->eq_obj[0]);
3439 goto done;
3440 }
3441
3442 /* MSIx */
3443 for_all_evt_queues(adapter, eqo, i) {
3444 vec = be_msix_vec_get(adapter, eqo);
3445 irq_set_affinity_hint(vec, NULL);
3446 free_irq(vec, eqo);
3447 }
3448
3449 done:
3450 adapter->isr_registered = false;
3451 }
3452
3453 static void be_rx_qs_destroy(struct be_adapter *adapter)
3454 {
3455 struct rss_info *rss = &adapter->rss_info;
3456 struct be_queue_info *q;
3457 struct be_rx_obj *rxo;
3458 int i;
3459
3460 for_all_rx_queues(adapter, rxo, i) {
3461 q = &rxo->q;
3462 if (q->created) {
3463 /* If RXQs are destroyed while in an "out of buffer"
3464 * state, there is a possibility of an HW stall on
3465 * Lancer. So, post 64 buffers to each queue to relieve
3466 * the "out of buffer" condition.
3467 * Make sure there's space in the RXQ before posting.
3468 */
3469 if (lancer_chip(adapter)) {
3470 be_rx_cq_clean(rxo);
3471 if (atomic_read(&q->used) == 0)
3472 be_post_rx_frags(rxo, GFP_KERNEL,
3473 MAX_RX_POST);
3474 }
3475
3476 be_cmd_rxq_destroy(adapter, q);
3477 be_rx_cq_clean(rxo);
3478 be_rxq_clean(rxo);
3479 }
3480 be_queue_free(adapter, q);
3481 }
3482
3483 if (rss->rss_flags) {
3484 rss->rss_flags = RSS_ENABLE_NONE;
3485 be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3486 128, rss->rss_hkey);
3487 }
3488 }
3489
3490 static void be_disable_if_filters(struct be_adapter *adapter)
3491 {
3492 /* Don't delete MAC on BE3 VFs without FILTMGMT privilege */
3493 if (!BEx_chip(adapter) || !be_virtfn(adapter) ||
3494 check_privilege(adapter, BE_PRIV_FILTMGMT)) {
3495 be_dev_mac_del(adapter, adapter->pmac_id[0]);
3496 eth_zero_addr(adapter->dev_mac);
3497 }
3498
3499 be_clear_uc_list(adapter);
3500 be_clear_mc_list(adapter);
3501
3502 /* The IFACE flags are enabled in the open path and cleared
3503 * in the close path. When a VF gets detached from the host and
3504 * assigned to a VM the following happens:
3505 * - VF's IFACE flags get cleared in the detach path
3506 * - IFACE create is issued by the VF in the attach path
3507 * Due to a bug in the BE3/Skyhawk-R FW
3508 * (Lancer FW doesn't have the bug), the IFACE capability flags
3509 * specified along with the IFACE create cmd issued by a VF are not
3510 * honoured by FW. As a consequence, if a *new* driver
3511 * (that enables/disables IFACE flags in open/close)
3512 * is loaded in the host and an *old* driver is * used by a VM/VF,
3513 * the IFACE gets created *without* the needed flags.
3514 * To avoid this, disable RX-filter flags only for Lancer.
3515 */
3516 if (lancer_chip(adapter)) {
3517 be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
3518 adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
3519 }
3520 }
3521
3522 static int be_close(struct net_device *netdev)
3523 {
3524 struct be_adapter *adapter = netdev_priv(netdev);
3525 struct be_eq_obj *eqo;
3526 int i;
3527
3528 /* This protection is needed as be_close() may be called even when the
3529 * adapter is in cleared state (after eeh perm failure)
3530 */
3531 if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
3532 return 0;
3533
3534 /* Before attempting cleanup ensure all the pending cmds in the
3535 * config_wq have finished execution
3536 */
3537 flush_workqueue(be_wq);
3538
3539 be_disable_if_filters(adapter);
3540
3541 if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
3542 for_all_evt_queues(adapter, eqo, i) {
3543 napi_disable(&eqo->napi);
3544 }
3545 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
3546 }
3547
3548 be_async_mcc_disable(adapter);
3549
3550 /* Wait for all pending tx completions to arrive so that
3551 * all tx skbs are freed.
3552 */
3553 netif_tx_disable(netdev);
3554 be_tx_compl_clean(adapter);
3555
3556 be_rx_qs_destroy(adapter);
3557
3558 for_all_evt_queues(adapter, eqo, i) {
3559 if (msix_enabled(adapter))
3560 synchronize_irq(be_msix_vec_get(adapter, eqo));
3561 else
3562 synchronize_irq(netdev->irq);
3563 be_eq_clean(eqo);
3564 }
3565
3566 be_irq_unregister(adapter);
3567
3568 return 0;
3569 }
3570
3571 static int be_rx_qs_create(struct be_adapter *adapter)
3572 {
3573 struct rss_info *rss = &adapter->rss_info;
3574 u8 rss_key[RSS_HASH_KEY_LEN];
3575 struct be_rx_obj *rxo;
3576 int rc, i, j;
3577
3578 for_all_rx_queues(adapter, rxo, i) {
3579 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
3580 sizeof(struct be_eth_rx_d));
3581 if (rc)
3582 return rc;
3583 }
3584
3585 if (adapter->need_def_rxq || !adapter->num_rss_qs) {
3586 rxo = default_rxo(adapter);
3587 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3588 rx_frag_size, adapter->if_handle,
3589 false, &rxo->rss_id);
3590 if (rc)
3591 return rc;
3592 }
3593
3594 for_all_rss_queues(adapter, rxo, i) {
3595 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3596 rx_frag_size, adapter->if_handle,
3597 true, &rxo->rss_id);
3598 if (rc)
3599 return rc;
3600 }
3601
3602 if (be_multi_rxq(adapter)) {
3603 for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {
3604 for_all_rss_queues(adapter, rxo, i) {
3605 if ((j + i) >= RSS_INDIR_TABLE_LEN)
3606 break;
3607 rss->rsstable[j + i] = rxo->rss_id;
3608 rss->rss_queue[j + i] = i;
3609 }
3610 }
3611 rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
3612 RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
3613
3614 if (!BEx_chip(adapter))
3615 rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |
3616 RSS_ENABLE_UDP_IPV6;
3617
3618 netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
3619 rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3620 RSS_INDIR_TABLE_LEN, rss_key);
3621 if (rc) {
3622 rss->rss_flags = RSS_ENABLE_NONE;
3623 return rc;
3624 }
3625
3626 memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
3627 } else {
3628 /* Disable RSS, if only default RX Q is created */
3629 rss->rss_flags = RSS_ENABLE_NONE;
3630 }
3631
3632
3633 /* Post 1 less than RXQ-len to avoid head being equal to tail,
3634 * which is a queue empty condition
3635 */
3636 for_all_rx_queues(adapter, rxo, i)
3637 be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);
3638
3639 return 0;
3640 }
3641
3642 static int be_enable_if_filters(struct be_adapter *adapter)
3643 {
3644 int status;
3645
3646 status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);
3647 if (status)
3648 return status;
3649
3650 /* Normally this condition usually true as the ->dev_mac is zeroed.
3651 * But on BE3 VFs the initial MAC is pre-programmed by PF and
3652 * subsequent be_dev_mac_add() can fail (after fresh boot)
3653 */
3654 if (!ether_addr_equal(adapter->dev_mac, adapter->netdev->dev_addr)) {
3655 int old_pmac_id = -1;
3656
3657 /* Remember old programmed MAC if any - can happen on BE3 VF */
3658 if (!is_zero_ether_addr(adapter->dev_mac))
3659 old_pmac_id = adapter->pmac_id[0];
3660
3661 status = be_dev_mac_add(adapter, adapter->netdev->dev_addr);
3662 if (status)
3663 return status;
3664
3665 /* Delete the old programmed MAC as we successfully programmed
3666 * a new MAC
3667 */
3668 if (old_pmac_id >= 0 && old_pmac_id != adapter->pmac_id[0])
3669 be_dev_mac_del(adapter, old_pmac_id);
3670
3671 ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr);
3672 }
3673
3674 if (adapter->vlans_added)
3675 be_vid_config(adapter);
3676
3677 __be_set_rx_mode(adapter);
3678
3679 return 0;
3680 }
3681
3682 static int be_open(struct net_device *netdev)
3683 {
3684 struct be_adapter *adapter = netdev_priv(netdev);
3685 struct be_eq_obj *eqo;
3686 struct be_rx_obj *rxo;
3687 struct be_tx_obj *txo;
3688 u8 link_status;
3689 int status, i;
3690
3691 status = be_rx_qs_create(adapter);
3692 if (status)
3693 goto err;
3694
3695 status = be_enable_if_filters(adapter);
3696 if (status)
3697 goto err;
3698
3699 status = be_irq_register(adapter);
3700 if (status)
3701 goto err;
3702
3703 for_all_rx_queues(adapter, rxo, i)
3704 be_cq_notify(adapter, rxo->cq.id, true, 0);
3705
3706 for_all_tx_queues(adapter, txo, i)
3707 be_cq_notify(adapter, txo->cq.id, true, 0);
3708
3709 be_async_mcc_enable(adapter);
3710
3711 for_all_evt_queues(adapter, eqo, i) {
3712 napi_enable(&eqo->napi);
3713 be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);
3714 }
3715 adapter->flags |= BE_FLAGS_NAPI_ENABLED;
3716
3717 status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
3718 if (!status)
3719 be_link_status_update(adapter, link_status);
3720
3721 netif_tx_start_all_queues(netdev);
3722 if (skyhawk_chip(adapter))
3723 udp_tunnel_get_rx_info(netdev);
3724
3725 return 0;
3726 err:
3727 be_close(adapter->netdev);
3728 return -EIO;
3729 }
3730
3731 static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
3732 {
3733 u32 addr;
3734
3735 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
3736
3737 mac[5] = (u8)(addr & 0xFF);
3738 mac[4] = (u8)((addr >> 8) & 0xFF);
3739 mac[3] = (u8)((addr >> 16) & 0xFF);
3740 /* Use the OUI from the current MAC address */
3741 memcpy(mac, adapter->netdev->dev_addr, 3);
3742 }
3743
3744 /*
3745 * Generate a seed MAC address from the PF MAC Address using jhash.
3746 * MAC Address for VFs are assigned incrementally starting from the seed.
3747 * These addresses are programmed in the ASIC by the PF and the VF driver
3748 * queries for the MAC address during its probe.
3749 */
3750 static int be_vf_eth_addr_config(struct be_adapter *adapter)
3751 {
3752 u32 vf;
3753 int status = 0;
3754 u8 mac[ETH_ALEN];
3755 struct be_vf_cfg *vf_cfg;
3756
3757 be_vf_eth_addr_generate(adapter, mac);
3758
3759 for_all_vfs(adapter, vf_cfg, vf) {
3760 if (BEx_chip(adapter))
3761 status = be_cmd_pmac_add(adapter, mac,
3762 vf_cfg->if_handle,
3763 &vf_cfg->pmac_id, vf + 1);
3764 else
3765 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
3766 vf + 1);
3767
3768 if (status)
3769 dev_err(&adapter->pdev->dev,
3770 "Mac address assignment failed for VF %d\n",
3771 vf);
3772 else
3773 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3774
3775 mac[5] += 1;
3776 }
3777 return status;
3778 }
3779
3780 static int be_vfs_mac_query(struct be_adapter *adapter)
3781 {
3782 int status, vf;
3783 u8 mac[ETH_ALEN];
3784 struct be_vf_cfg *vf_cfg;
3785
3786 for_all_vfs(adapter, vf_cfg, vf) {
3787 status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,
3788 mac, vf_cfg->if_handle,
3789 false, vf+1);
3790 if (status)
3791 return status;
3792 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3793 }
3794 return 0;
3795 }
3796
3797 static void be_vf_clear(struct be_adapter *adapter)
3798 {
3799 struct be_vf_cfg *vf_cfg;
3800 u32 vf;
3801
3802 if (pci_vfs_assigned(adapter->pdev)) {
3803 dev_warn(&adapter->pdev->dev,
3804 "VFs are assigned to VMs: not disabling VFs\n");
3805 goto done;
3806 }
3807
3808 pci_disable_sriov(adapter->pdev);
3809
3810 for_all_vfs(adapter, vf_cfg, vf) {
3811 if (BEx_chip(adapter))
3812 be_cmd_pmac_del(adapter, vf_cfg->if_handle,
3813 vf_cfg->pmac_id, vf + 1);
3814 else
3815 be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
3816 vf + 1);
3817
3818 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
3819 }
3820
3821 if (BE3_chip(adapter))
3822 be_cmd_set_hsw_config(adapter, 0, 0,
3823 adapter->if_handle,
3824 PORT_FWD_TYPE_PASSTHRU, 0);
3825 done:
3826 kfree(adapter->vf_cfg);
3827 adapter->num_vfs = 0;
3828 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3829 }
3830
3831 static void be_clear_queues(struct be_adapter *adapter)
3832 {
3833 be_mcc_queues_destroy(adapter);
3834 be_rx_cqs_destroy(adapter);
3835 be_tx_queues_destroy(adapter);
3836 be_evt_queues_destroy(adapter);
3837 }
3838
3839 static void be_cancel_worker(struct be_adapter *adapter)
3840 {
3841 if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
3842 cancel_delayed_work_sync(&adapter->work);
3843 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
3844 }
3845 }
3846
3847 static void be_cancel_err_detection(struct be_adapter *adapter)
3848 {
3849 struct be_error_recovery *err_rec = &adapter->error_recovery;
3850
3851 if (!be_err_recovery_workq)
3852 return;
3853
3854 if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {
3855 cancel_delayed_work_sync(&err_rec->err_detection_work);
3856 adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;
3857 }
3858 }
3859
3860 static void be_disable_vxlan_offloads(struct be_adapter *adapter)
3861 {
3862 struct net_device *netdev = adapter->netdev;
3863
3864 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
3865 be_cmd_manage_iface(adapter, adapter->if_handle,
3866 OP_CONVERT_TUNNEL_TO_NORMAL);
3867
3868 if (adapter->vxlan_port)
3869 be_cmd_set_vxlan_port(adapter, 0);
3870
3871 adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
3872 adapter->vxlan_port = 0;
3873
3874 netdev->hw_enc_features = 0;
3875 netdev->hw_features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3876 netdev->features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3877 }
3878
3879 static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,
3880 struct be_resources *vft_res)
3881 {
3882 struct be_resources res = adapter->pool_res;
3883 u32 vf_if_cap_flags = res.vf_if_cap_flags;
3884 struct be_resources res_mod = {0};
3885 u16 num_vf_qs = 1;
3886
3887 /* Distribute the queue resources among the PF and it's VFs */
3888 if (num_vfs) {
3889 /* Divide the rx queues evenly among the VFs and the PF, capped
3890 * at VF-EQ-count. Any remainder queues belong to the PF.
3891 */
3892 num_vf_qs = min(SH_VF_MAX_NIC_EQS,
3893 res.max_rss_qs / (num_vfs + 1));
3894
3895 /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES
3896 * RSS Tables per port. Provide RSS on VFs, only if number of
3897 * VFs requested is less than it's PF Pool's RSS Tables limit.
3898 */
3899 if (num_vfs >= be_max_pf_pool_rss_tables(adapter))
3900 num_vf_qs = 1;
3901 }
3902
3903 /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,
3904 * which are modifiable using SET_PROFILE_CONFIG cmd.
3905 */
3906 be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,
3907 RESOURCE_MODIFIABLE, 0);
3908
3909 /* If RSS IFACE capability flags are modifiable for a VF, set the
3910 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if
3911 * more than 1 RSSQ is available for a VF.
3912 * Otherwise, provision only 1 queue pair for VF.
3913 */
3914 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {
3915 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
3916 if (num_vf_qs > 1) {
3917 vf_if_cap_flags |= BE_IF_FLAGS_RSS;
3918 if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)
3919 vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;
3920 } else {
3921 vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |
3922 BE_IF_FLAGS_DEFQ_RSS);
3923 }
3924 } else {
3925 num_vf_qs = 1;
3926 }
3927
3928 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
3929 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
3930 vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
3931 }
3932
3933 vft_res->vf_if_cap_flags = vf_if_cap_flags;
3934 vft_res->max_rx_qs = num_vf_qs;
3935 vft_res->max_rss_qs = num_vf_qs;
3936 vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);
3937 vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);
3938
3939 /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally
3940 * among the PF and it's VFs, if the fields are changeable
3941 */
3942 if (res_mod.max_uc_mac == FIELD_MODIFIABLE)
3943 vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);
3944
3945 if (res_mod.max_vlans == FIELD_MODIFIABLE)
3946 vft_res->max_vlans = res.max_vlans / (num_vfs + 1);
3947
3948 if (res_mod.max_iface_count == FIELD_MODIFIABLE)
3949 vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);
3950
3951 if (res_mod.max_mcc_count == FIELD_MODIFIABLE)
3952 vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);
3953 }
3954
3955 static void be_if_destroy(struct be_adapter *adapter)
3956 {
3957 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
3958
3959 kfree(adapter->pmac_id);
3960 adapter->pmac_id = NULL;
3961
3962 kfree(adapter->mc_list);
3963 adapter->mc_list = NULL;
3964
3965 kfree(adapter->uc_list);
3966 adapter->uc_list = NULL;
3967 }
3968
3969 static int be_clear(struct be_adapter *adapter)
3970 {
3971 struct pci_dev *pdev = adapter->pdev;
3972 struct be_resources vft_res = {0};
3973
3974 be_cancel_worker(adapter);
3975
3976 flush_workqueue(be_wq);
3977
3978 if (sriov_enabled(adapter))
3979 be_vf_clear(adapter);
3980
3981 /* Re-configure FW to distribute resources evenly across max-supported
3982 * number of VFs, only when VFs are not already enabled.
3983 */
3984 if (skyhawk_chip(adapter) && be_physfn(adapter) &&
3985 !pci_vfs_assigned(pdev)) {
3986 be_calculate_vf_res(adapter,
3987 pci_sriov_get_totalvfs(pdev),
3988 &vft_res);
3989 be_cmd_set_sriov_config(adapter, adapter->pool_res,
3990 pci_sriov_get_totalvfs(pdev),
3991 &vft_res);
3992 }
3993
3994 be_disable_vxlan_offloads(adapter);
3995
3996 be_if_destroy(adapter);
3997
3998 be_clear_queues(adapter);
3999
4000 be_msix_disable(adapter);
4001 adapter->flags &= ~BE_FLAGS_SETUP_DONE;
4002 return 0;
4003 }
4004
4005 static int be_vfs_if_create(struct be_adapter *adapter)
4006 {
4007 struct be_resources res = {0};
4008 u32 cap_flags, en_flags, vf;
4009 struct be_vf_cfg *vf_cfg;
4010 int status;
4011
4012 /* If a FW profile exists, then cap_flags are updated */
4013 cap_flags = BE_VF_IF_EN_FLAGS;
4014
4015 for_all_vfs(adapter, vf_cfg, vf) {
4016 if (!BE3_chip(adapter)) {
4017 status = be_cmd_get_profile_config(adapter, &res, NULL,
4018 ACTIVE_PROFILE_TYPE,
4019 RESOURCE_LIMITS,
4020 vf + 1);
4021 if (!status) {
4022 cap_flags = res.if_cap_flags;
4023 /* Prevent VFs from enabling VLAN promiscuous
4024 * mode
4025 */
4026 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4027 }
4028 }
4029
4030 /* PF should enable IF flags during proxy if_create call */
4031 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
4032 status = be_cmd_if_create(adapter, cap_flags, en_flags,
4033 &vf_cfg->if_handle, vf + 1);
4034 if (status)
4035 return status;
4036 }
4037
4038 return 0;
4039 }
4040
4041 static int be_vf_setup_init(struct be_adapter *adapter)
4042 {
4043 struct be_vf_cfg *vf_cfg;
4044 int vf;
4045
4046 adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
4047 GFP_KERNEL);
4048 if (!adapter->vf_cfg)
4049 return -ENOMEM;
4050
4051 for_all_vfs(adapter, vf_cfg, vf) {
4052 vf_cfg->if_handle = -1;
4053 vf_cfg->pmac_id = -1;
4054 }
4055 return 0;
4056 }
4057
4058 static int be_vf_setup(struct be_adapter *adapter)
4059 {
4060 struct device *dev = &adapter->pdev->dev;
4061 struct be_vf_cfg *vf_cfg;
4062 int status, old_vfs, vf;
4063 bool spoofchk;
4064
4065 old_vfs = pci_num_vf(adapter->pdev);
4066
4067 status = be_vf_setup_init(adapter);
4068 if (status)
4069 goto err;
4070
4071 if (old_vfs) {
4072 for_all_vfs(adapter, vf_cfg, vf) {
4073 status = be_cmd_get_if_id(adapter, vf_cfg, vf);
4074 if (status)
4075 goto err;
4076 }
4077
4078 status = be_vfs_mac_query(adapter);
4079 if (status)
4080 goto err;
4081 } else {
4082 status = be_vfs_if_create(adapter);
4083 if (status)
4084 goto err;
4085
4086 status = be_vf_eth_addr_config(adapter);
4087 if (status)
4088 goto err;
4089 }
4090
4091 for_all_vfs(adapter, vf_cfg, vf) {
4092 /* Allow VFs to programs MAC/VLAN filters */
4093 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
4094 vf + 1);
4095 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
4096 status = be_cmd_set_fn_privileges(adapter,
4097 vf_cfg->privileges |
4098 BE_PRIV_FILTMGMT,
4099 vf + 1);
4100 if (!status) {
4101 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
4102 dev_info(dev, "VF%d has FILTMGMT privilege\n",
4103 vf);
4104 }
4105 }
4106
4107 /* Allow full available bandwidth */
4108 if (!old_vfs)
4109 be_cmd_config_qos(adapter, 0, 0, vf + 1);
4110
4111 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
4112 vf_cfg->if_handle, NULL,
4113 &spoofchk);
4114 if (!status)
4115 vf_cfg->spoofchk = spoofchk;
4116
4117 if (!old_vfs) {
4118 be_cmd_enable_vf(adapter, vf + 1);
4119 be_cmd_set_logical_link_config(adapter,
4120 IFLA_VF_LINK_STATE_AUTO,
4121 vf+1);
4122 }
4123 }
4124
4125 if (!old_vfs) {
4126 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
4127 if (status) {
4128 dev_err(dev, "SRIOV enable failed\n");
4129 adapter->num_vfs = 0;
4130 goto err;
4131 }
4132 }
4133
4134 if (BE3_chip(adapter)) {
4135 /* On BE3, enable VEB only when SRIOV is enabled */
4136 status = be_cmd_set_hsw_config(adapter, 0, 0,
4137 adapter->if_handle,
4138 PORT_FWD_TYPE_VEB, 0);
4139 if (status)
4140 goto err;
4141 }
4142
4143 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4144 return 0;
4145 err:
4146 dev_err(dev, "VF setup failed\n");
4147 be_vf_clear(adapter);
4148 return status;
4149 }
4150
4151 /* Converting function_mode bits on BE3 to SH mc_type enums */
4152
4153 static u8 be_convert_mc_type(u32 function_mode)
4154 {
4155 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4156 return vNIC1;
4157 else if (function_mode & QNQ_MODE)
4158 return FLEX10;
4159 else if (function_mode & VNIC_MODE)
4160 return vNIC2;
4161 else if (function_mode & UMC_ENABLED)
4162 return UMC;
4163 else
4164 return MC_NONE;
4165 }
4166
4167 /* On BE2/BE3 FW does not suggest the supported limits */
4168 static void BEx_get_resources(struct be_adapter *adapter,
4169 struct be_resources *res)
4170 {
4171 bool use_sriov = adapter->num_vfs ? 1 : 0;
4172
4173 if (be_physfn(adapter))
4174 res->max_uc_mac = BE_UC_PMAC_COUNT;
4175 else
4176 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4177
4178 adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4179
4180 if (be_is_mc(adapter)) {
4181 /* Assuming that there are 4 channels per port,
4182 * when multi-channel is enabled
4183 */
4184 if (be_is_qnq_mode(adapter))
4185 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4186 else
4187 /* In a non-qnq multichannel mode, the pvid
4188 * takes up one vlan entry
4189 */
4190 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4191 } else {
4192 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4193 }
4194
4195 res->max_mcast_mac = BE_MAX_MC;
4196
4197 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4198 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4199 * *only* if it is RSS-capable.
4200 */
4201 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||
4202 be_virtfn(adapter) ||
4203 (be_is_mc(adapter) &&
4204 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4205 res->max_tx_qs = 1;
4206 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4207 struct be_resources super_nic_res = {0};
4208
4209 /* On a SuperNIC profile, the driver needs to use the
4210 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4211 */
4212 be_cmd_get_profile_config(adapter, &super_nic_res, NULL,
4213 ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,
4214 0);
4215 /* Some old versions of BE3 FW don't report max_tx_qs value */
4216 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4217 } else {
4218 res->max_tx_qs = BE3_MAX_TX_QS;
4219 }
4220
4221 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4222 !use_sriov && be_physfn(adapter))
4223 res->max_rss_qs = (adapter->be3_native) ?
4224 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4225 res->max_rx_qs = res->max_rss_qs + 1;
4226
4227 if (be_physfn(adapter))
4228 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4229 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4230 else
4231 res->max_evt_qs = 1;
4232
4233 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4234 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4235 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4236 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4237 }
4238
4239 static void be_setup_init(struct be_adapter *adapter)
4240 {
4241 adapter->vlan_prio_bmap = 0xff;
4242 adapter->phy.link_speed = -1;
4243 adapter->if_handle = -1;
4244 adapter->be3_native = false;
4245 adapter->if_flags = 0;
4246 adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4247 if (be_physfn(adapter))
4248 adapter->cmd_privileges = MAX_PRIVILEGES;
4249 else
4250 adapter->cmd_privileges = MIN_PRIVILEGES;
4251 }
4252
4253 /* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.
4254 * However, this HW limitation is not exposed to the host via any SLI cmd.
4255 * As a result, in the case of SRIOV and in particular multi-partition configs
4256 * the driver needs to calcuate a proportional share of RSS Tables per PF-pool
4257 * for distribution between the VFs. This self-imposed limit will determine the
4258 * no: of VFs for which RSS can be enabled.
4259 */
4260 static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)
4261 {
4262 struct be_port_resources port_res = {0};
4263 u8 rss_tables_on_port;
4264 u16 max_vfs = be_max_vfs(adapter);
4265
4266 be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,
4267 RESOURCE_LIMITS, 0);
4268
4269 rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;
4270
4271 /* Each PF Pool's RSS Tables limit =
4272 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port
4273 */
4274 adapter->pool_res.max_rss_tables =
4275 max_vfs * rss_tables_on_port / port_res.max_vfs;
4276 }
4277
4278 static int be_get_sriov_config(struct be_adapter *adapter)
4279 {
4280 struct be_resources res = {0};
4281 int max_vfs, old_vfs;
4282
4283 be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,
4284 RESOURCE_LIMITS, 0);
4285
4286 /* Some old versions of BE3 FW don't report max_vfs value */
4287 if (BE3_chip(adapter) && !res.max_vfs) {
4288 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4289 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4290 }
4291
4292 adapter->pool_res = res;
4293
4294 /* If during previous unload of the driver, the VFs were not disabled,
4295 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4296 * Instead use the TotalVFs value stored in the pci-dev struct.
4297 */
4298 old_vfs = pci_num_vf(adapter->pdev);
4299 if (old_vfs) {
4300 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4301 old_vfs);
4302
4303 adapter->pool_res.max_vfs =
4304 pci_sriov_get_totalvfs(adapter->pdev);
4305 adapter->num_vfs = old_vfs;
4306 }
4307
4308 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4309 be_calculate_pf_pool_rss_tables(adapter);
4310 dev_info(&adapter->pdev->dev,
4311 "RSS can be enabled for all VFs if num_vfs <= %d\n",
4312 be_max_pf_pool_rss_tables(adapter));
4313 }
4314 return 0;
4315 }
4316
4317 static void be_alloc_sriov_res(struct be_adapter *adapter)
4318 {
4319 int old_vfs = pci_num_vf(adapter->pdev);
4320 struct be_resources vft_res = {0};
4321 int status;
4322
4323 be_get_sriov_config(adapter);
4324
4325 if (!old_vfs)
4326 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4327
4328 /* When the HW is in SRIOV capable configuration, the PF-pool
4329 * resources are given to PF during driver load, if there are no
4330 * old VFs. This facility is not available in BE3 FW.
4331 * Also, this is done by FW in Lancer chip.
4332 */
4333 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4334 be_calculate_vf_res(adapter, 0, &vft_res);
4335 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4336 &vft_res);
4337 if (status)
4338 dev_err(&adapter->pdev->dev,
4339 "Failed to optimize SRIOV resources\n");
4340 }
4341 }
4342
4343 static int be_get_resources(struct be_adapter *adapter)
4344 {
4345 struct device *dev = &adapter->pdev->dev;
4346 struct be_resources res = {0};
4347 int status;
4348
4349 /* For Lancer, SH etc read per-function resource limits from FW.
4350 * GET_FUNC_CONFIG returns per function guaranteed limits.
4351 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4352 */
4353 if (BEx_chip(adapter)) {
4354 BEx_get_resources(adapter, &res);
4355 } else {
4356 status = be_cmd_get_func_config(adapter, &res);
4357 if (status)
4358 return status;
4359
4360 /* If a deafault RXQ must be created, we'll use up one RSSQ*/
4361 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4362 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4363 res.max_rss_qs -= 1;
4364 }
4365
4366 /* If RoCE is supported stash away half the EQs for RoCE */
4367 res.max_nic_evt_qs = be_roce_supported(adapter) ?
4368 res.max_evt_qs / 2 : res.max_evt_qs;
4369 adapter->res = res;
4370
4371 /* If FW supports RSS default queue, then skip creating non-RSS
4372 * queue for non-IP traffic.
4373 */
4374 adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4375 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4376
4377 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4378 be_max_txqs(adapter), be_max_rxqs(adapter),
4379 be_max_rss(adapter), be_max_nic_eqs(adapter),
4380 be_max_vfs(adapter));
4381 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4382 be_max_uc(adapter), be_max_mc(adapter),
4383 be_max_vlans(adapter));
4384
4385 /* Ensure RX and TX queues are created in pairs at init time */
4386 adapter->cfg_num_rx_irqs =
4387 min_t(u16, netif_get_num_default_rss_queues(),
4388 be_max_qp_irqs(adapter));
4389 adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;
4390 return 0;
4391 }
4392
4393 static int be_get_config(struct be_adapter *adapter)
4394 {
4395 int status, level;
4396 u16 profile_id;
4397
4398 status = be_cmd_get_cntl_attributes(adapter);
4399 if (status)
4400 return status;
4401
4402 status = be_cmd_query_fw_cfg(adapter);
4403 if (status)
4404 return status;
4405
4406 if (!lancer_chip(adapter) && be_physfn(adapter))
4407 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4408
4409 if (BEx_chip(adapter)) {
4410 level = be_cmd_get_fw_log_level(adapter);
4411 adapter->msg_enable =
4412 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4413 }
4414
4415 be_cmd_get_acpi_wol_cap(adapter);
4416 pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);
4417 pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);
4418
4419 be_cmd_query_port_name(adapter);
4420
4421 if (be_physfn(adapter)) {
4422 status = be_cmd_get_active_profile(adapter, &profile_id);
4423 if (!status)
4424 dev_info(&adapter->pdev->dev,
4425 "Using profile 0x%x\n", profile_id);
4426 }
4427
4428 return 0;
4429 }
4430
4431 static int be_mac_setup(struct be_adapter *adapter)
4432 {
4433 u8 mac[ETH_ALEN];
4434 int status;
4435
4436 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4437 status = be_cmd_get_perm_mac(adapter, mac);
4438 if (status)
4439 return status;
4440
4441 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
4442 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4443
4444 /* Initial MAC for BE3 VFs is already programmed by PF */
4445 if (BEx_chip(adapter) && be_virtfn(adapter))
4446 memcpy(adapter->dev_mac, mac, ETH_ALEN);
4447 }
4448
4449 return 0;
4450 }
4451
4452 static void be_schedule_worker(struct be_adapter *adapter)
4453 {
4454 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
4455 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4456 }
4457
4458 static void be_destroy_err_recovery_workq(void)
4459 {
4460 if (!be_err_recovery_workq)
4461 return;
4462
4463 flush_workqueue(be_err_recovery_workq);
4464 destroy_workqueue(be_err_recovery_workq);
4465 be_err_recovery_workq = NULL;
4466 }
4467
4468 static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4469 {
4470 struct be_error_recovery *err_rec = &adapter->error_recovery;
4471
4472 if (!be_err_recovery_workq)
4473 return;
4474
4475 queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work,
4476 msecs_to_jiffies(delay));
4477 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4478 }
4479
4480 static int be_setup_queues(struct be_adapter *adapter)
4481 {
4482 struct net_device *netdev = adapter->netdev;
4483 int status;
4484
4485 status = be_evt_queues_create(adapter);
4486 if (status)
4487 goto err;
4488
4489 status = be_tx_qs_create(adapter);
4490 if (status)
4491 goto err;
4492
4493 status = be_rx_cqs_create(adapter);
4494 if (status)
4495 goto err;
4496
4497 status = be_mcc_queues_create(adapter);
4498 if (status)
4499 goto err;
4500
4501 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4502 if (status)
4503 goto err;
4504
4505 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4506 if (status)
4507 goto err;
4508
4509 return 0;
4510 err:
4511 dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4512 return status;
4513 }
4514
4515 static int be_if_create(struct be_adapter *adapter)
4516 {
4517 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4518 u32 cap_flags = be_if_cap_flags(adapter);
4519 int status;
4520
4521 /* alloc required memory for other filtering fields */
4522 adapter->pmac_id = kcalloc(be_max_uc(adapter),
4523 sizeof(*adapter->pmac_id), GFP_KERNEL);
4524 if (!adapter->pmac_id)
4525 return -ENOMEM;
4526
4527 adapter->mc_list = kcalloc(be_max_mc(adapter),
4528 sizeof(*adapter->mc_list), GFP_KERNEL);
4529 if (!adapter->mc_list)
4530 return -ENOMEM;
4531
4532 adapter->uc_list = kcalloc(be_max_uc(adapter),
4533 sizeof(*adapter->uc_list), GFP_KERNEL);
4534 if (!adapter->uc_list)
4535 return -ENOMEM;
4536
4537 if (adapter->cfg_num_rx_irqs == 1)
4538 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4539
4540 en_flags &= cap_flags;
4541 /* will enable all the needed filter flags in be_open() */
4542 status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4543 &adapter->if_handle, 0);
4544
4545 if (status)
4546 return status;
4547
4548 return 0;
4549 }
4550
4551 int be_update_queues(struct be_adapter *adapter)
4552 {
4553 struct net_device *netdev = adapter->netdev;
4554 int status;
4555
4556 if (netif_running(netdev))
4557 be_close(netdev);
4558
4559 be_cancel_worker(adapter);
4560
4561 /* If any vectors have been shared with RoCE we cannot re-program
4562 * the MSIx table.
4563 */
4564 if (!adapter->num_msix_roce_vec)
4565 be_msix_disable(adapter);
4566
4567 be_clear_queues(adapter);
4568 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4569 if (status)
4570 return status;
4571
4572 if (!msix_enabled(adapter)) {
4573 status = be_msix_enable(adapter);
4574 if (status)
4575 return status;
4576 }
4577
4578 status = be_if_create(adapter);
4579 if (status)
4580 return status;
4581
4582 status = be_setup_queues(adapter);
4583 if (status)
4584 return status;
4585
4586 be_schedule_worker(adapter);
4587
4588 if (netif_running(netdev))
4589 status = be_open(netdev);
4590
4591 return status;
4592 }
4593
4594 static inline int fw_major_num(const char *fw_ver)
4595 {
4596 int fw_major = 0, i;
4597
4598 i = sscanf(fw_ver, "%d.", &fw_major);
4599 if (i != 1)
4600 return 0;
4601
4602 return fw_major;
4603 }
4604
4605 /* If it is error recovery, FLR the PF
4606 * Else if any VFs are already enabled don't FLR the PF
4607 */
4608 static bool be_reset_required(struct be_adapter *adapter)
4609 {
4610 if (be_error_recovering(adapter))
4611 return true;
4612 else
4613 return pci_num_vf(adapter->pdev) == 0;
4614 }
4615
4616 /* Wait for the FW to be ready and perform the required initialization */
4617 static int be_func_init(struct be_adapter *adapter)
4618 {
4619 int status;
4620
4621 status = be_fw_wait_ready(adapter);
4622 if (status)
4623 return status;
4624
4625 /* FW is now ready; clear errors to allow cmds/doorbell */
4626 be_clear_error(adapter, BE_CLEAR_ALL);
4627
4628 if (be_reset_required(adapter)) {
4629 status = be_cmd_reset_function(adapter);
4630 if (status)
4631 return status;
4632
4633 /* Wait for interrupts to quiesce after an FLR */
4634 msleep(100);
4635 }
4636
4637 /* Tell FW we're ready to fire cmds */
4638 status = be_cmd_fw_init(adapter);
4639 if (status)
4640 return status;
4641
4642 /* Allow interrupts for other ULPs running on NIC function */
4643 be_intr_set(adapter, true);
4644
4645 return 0;
4646 }
4647
4648 static int be_setup(struct be_adapter *adapter)
4649 {
4650 struct device *dev = &adapter->pdev->dev;
4651 int status;
4652
4653 status = be_func_init(adapter);
4654 if (status)
4655 return status;
4656
4657 be_setup_init(adapter);
4658
4659 if (!lancer_chip(adapter))
4660 be_cmd_req_native_mode(adapter);
4661
4662 /* invoke this cmd first to get pf_num and vf_num which are needed
4663 * for issuing profile related cmds
4664 */
4665 if (!BEx_chip(adapter)) {
4666 status = be_cmd_get_func_config(adapter, NULL);
4667 if (status)
4668 return status;
4669 }
4670
4671 status = be_get_config(adapter);
4672 if (status)
4673 goto err;
4674
4675 if (!BE2_chip(adapter) && be_physfn(adapter))
4676 be_alloc_sriov_res(adapter);
4677
4678 status = be_get_resources(adapter);
4679 if (status)
4680 goto err;
4681
4682 status = be_msix_enable(adapter);
4683 if (status)
4684 goto err;
4685
4686 /* will enable all the needed filter flags in be_open() */
4687 status = be_if_create(adapter);
4688 if (status)
4689 goto err;
4690
4691 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4692 rtnl_lock();
4693 status = be_setup_queues(adapter);
4694 rtnl_unlock();
4695 if (status)
4696 goto err;
4697
4698 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4699
4700 status = be_mac_setup(adapter);
4701 if (status)
4702 goto err;
4703
4704 be_cmd_get_fw_ver(adapter);
4705 dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4706
4707 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4708 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4709 adapter->fw_ver);
4710 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4711 }
4712
4713 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4714 adapter->rx_fc);
4715 if (status)
4716 be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4717 &adapter->rx_fc);
4718
4719 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4720 adapter->tx_fc, adapter->rx_fc);
4721
4722 if (be_physfn(adapter))
4723 be_cmd_set_logical_link_config(adapter,
4724 IFLA_VF_LINK_STATE_AUTO, 0);
4725
4726 /* BE3 EVB echoes broadcast/multicast packets back to PF's vport
4727 * confusing a linux bridge or OVS that it might be connected to.
4728 * Set the EVB to PASSTHRU mode which effectively disables the EVB
4729 * when SRIOV is not enabled.
4730 */
4731 if (BE3_chip(adapter))
4732 be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,
4733 PORT_FWD_TYPE_PASSTHRU, 0);
4734
4735 if (adapter->num_vfs)
4736 be_vf_setup(adapter);
4737
4738 status = be_cmd_get_phy_info(adapter);
4739 if (!status && be_pause_supported(adapter))
4740 adapter->phy.fc_autoneg = 1;
4741
4742 if (be_physfn(adapter) && !lancer_chip(adapter))
4743 be_cmd_set_features(adapter);
4744
4745 be_schedule_worker(adapter);
4746 adapter->flags |= BE_FLAGS_SETUP_DONE;
4747 return 0;
4748 err:
4749 be_clear(adapter);
4750 return status;
4751 }
4752
4753 #ifdef CONFIG_NET_POLL_CONTROLLER
4754 static void be_netpoll(struct net_device *netdev)
4755 {
4756 struct be_adapter *adapter = netdev_priv(netdev);
4757 struct be_eq_obj *eqo;
4758 int i;
4759
4760 for_all_evt_queues(adapter, eqo, i) {
4761 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4762 napi_schedule(&eqo->napi);
4763 }
4764 }
4765 #endif
4766
4767 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4768 {
4769 const struct firmware *fw;
4770 int status;
4771
4772 if (!netif_running(adapter->netdev)) {
4773 dev_err(&adapter->pdev->dev,
4774 "Firmware load not allowed (interface is down)\n");
4775 return -ENETDOWN;
4776 }
4777
4778 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4779 if (status)
4780 goto fw_exit;
4781
4782 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4783
4784 if (lancer_chip(adapter))
4785 status = lancer_fw_download(adapter, fw);
4786 else
4787 status = be_fw_download(adapter, fw);
4788
4789 if (!status)
4790 be_cmd_get_fw_ver(adapter);
4791
4792 fw_exit:
4793 release_firmware(fw);
4794 return status;
4795 }
4796
4797 static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4798 u16 flags)
4799 {
4800 struct be_adapter *adapter = netdev_priv(dev);
4801 struct nlattr *attr, *br_spec;
4802 int rem;
4803 int status = 0;
4804 u16 mode = 0;
4805
4806 if (!sriov_enabled(adapter))
4807 return -EOPNOTSUPP;
4808
4809 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4810 if (!br_spec)
4811 return -EINVAL;
4812
4813 nla_for_each_nested(attr, br_spec, rem) {
4814 if (nla_type(attr) != IFLA_BRIDGE_MODE)
4815 continue;
4816
4817 if (nla_len(attr) < sizeof(mode))
4818 return -EINVAL;
4819
4820 mode = nla_get_u16(attr);
4821 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4822 return -EOPNOTSUPP;
4823
4824 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4825 return -EINVAL;
4826
4827 status = be_cmd_set_hsw_config(adapter, 0, 0,
4828 adapter->if_handle,
4829 mode == BRIDGE_MODE_VEPA ?
4830 PORT_FWD_TYPE_VEPA :
4831 PORT_FWD_TYPE_VEB, 0);
4832 if (status)
4833 goto err;
4834
4835 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
4836 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4837
4838 return status;
4839 }
4840 err:
4841 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
4842 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4843
4844 return status;
4845 }
4846
4847 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4848 struct net_device *dev, u32 filter_mask,
4849 int nlflags)
4850 {
4851 struct be_adapter *adapter = netdev_priv(dev);
4852 int status = 0;
4853 u8 hsw_mode;
4854
4855 /* BE and Lancer chips support VEB mode only */
4856 if (BEx_chip(adapter) || lancer_chip(adapter)) {
4857 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
4858 if (!pci_sriov_get_totalvfs(adapter->pdev))
4859 return 0;
4860 hsw_mode = PORT_FWD_TYPE_VEB;
4861 } else {
4862 status = be_cmd_get_hsw_config(adapter, NULL, 0,
4863 adapter->if_handle, &hsw_mode,
4864 NULL);
4865 if (status)
4866 return 0;
4867
4868 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
4869 return 0;
4870 }
4871
4872 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
4873 hsw_mode == PORT_FWD_TYPE_VEPA ?
4874 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
4875 0, 0, nlflags, filter_mask, NULL);
4876 }
4877
4878 static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter,
4879 void (*func)(struct work_struct *))
4880 {
4881 struct be_cmd_work *work;
4882
4883 work = kzalloc(sizeof(*work), GFP_ATOMIC);
4884 if (!work) {
4885 dev_err(&adapter->pdev->dev,
4886 "be_work memory allocation failed\n");
4887 return NULL;
4888 }
4889
4890 INIT_WORK(&work->work, func);
4891 work->adapter = adapter;
4892 return work;
4893 }
4894
4895 /* VxLAN offload Notes:
4896 *
4897 * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't
4898 * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload
4899 * is expected to work across all types of IP tunnels once exported. Skyhawk
4900 * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN
4901 * offloads in hw_enc_features only when a VxLAN port is added. If other (non
4902 * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for
4903 * those other tunnels are unexported on the fly through ndo_features_check().
4904 *
4905 * Skyhawk supports VxLAN offloads only for one UDP dport. So, if the stack
4906 * adds more than one port, disable offloads and don't re-enable them again
4907 * until after all the tunnels are removed.
4908 */
4909 static void be_work_add_vxlan_port(struct work_struct *work)
4910 {
4911 struct be_cmd_work *cmd_work =
4912 container_of(work, struct be_cmd_work, work);
4913 struct be_adapter *adapter = cmd_work->adapter;
4914 struct net_device *netdev = adapter->netdev;
4915 struct device *dev = &adapter->pdev->dev;
4916 __be16 port = cmd_work->info.vxlan_port;
4917 int status;
4918
4919 if (adapter->vxlan_port == port && adapter->vxlan_port_count) {
4920 adapter->vxlan_port_aliases++;
4921 goto done;
4922 }
4923
4924 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) {
4925 dev_info(dev,
4926 "Only one UDP port supported for VxLAN offloads\n");
4927 dev_info(dev, "Disabling VxLAN offloads\n");
4928 adapter->vxlan_port_count++;
4929 goto err;
4930 }
4931
4932 if (adapter->vxlan_port_count++ >= 1)
4933 goto done;
4934
4935 status = be_cmd_manage_iface(adapter, adapter->if_handle,
4936 OP_CONVERT_NORMAL_TO_TUNNEL);
4937 if (status) {
4938 dev_warn(dev, "Failed to convert normal interface to tunnel\n");
4939 goto err;
4940 }
4941
4942 status = be_cmd_set_vxlan_port(adapter, port);
4943 if (status) {
4944 dev_warn(dev, "Failed to add VxLAN port\n");
4945 goto err;
4946 }
4947 adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
4948 adapter->vxlan_port = port;
4949
4950 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
4951 NETIF_F_TSO | NETIF_F_TSO6 |
4952 NETIF_F_GSO_UDP_TUNNEL;
4953 netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
4954 netdev->features |= NETIF_F_GSO_UDP_TUNNEL;
4955
4956 dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
4957 be16_to_cpu(port));
4958 goto done;
4959 err:
4960 be_disable_vxlan_offloads(adapter);
4961 done:
4962 kfree(cmd_work);
4963 }
4964
4965 static void be_work_del_vxlan_port(struct work_struct *work)
4966 {
4967 struct be_cmd_work *cmd_work =
4968 container_of(work, struct be_cmd_work, work);
4969 struct be_adapter *adapter = cmd_work->adapter;
4970 __be16 port = cmd_work->info.vxlan_port;
4971
4972 if (adapter->vxlan_port != port)
4973 goto done;
4974
4975 if (adapter->vxlan_port_aliases) {
4976 adapter->vxlan_port_aliases--;
4977 goto out;
4978 }
4979
4980 be_disable_vxlan_offloads(adapter);
4981
4982 dev_info(&adapter->pdev->dev,
4983 "Disabled VxLAN offloads for UDP port %d\n",
4984 be16_to_cpu(port));
4985 done:
4986 adapter->vxlan_port_count--;
4987 out:
4988 kfree(cmd_work);
4989 }
4990
4991 static void be_cfg_vxlan_port(struct net_device *netdev,
4992 struct udp_tunnel_info *ti,
4993 void (*func)(struct work_struct *))
4994 {
4995 struct be_adapter *adapter = netdev_priv(netdev);
4996 struct be_cmd_work *cmd_work;
4997
4998 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
4999 return;
5000
5001 if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
5002 return;
5003
5004 cmd_work = be_alloc_work(adapter, func);
5005 if (cmd_work) {
5006 cmd_work->info.vxlan_port = ti->port;
5007 queue_work(be_wq, &cmd_work->work);
5008 }
5009 }
5010
5011 static void be_del_vxlan_port(struct net_device *netdev,
5012 struct udp_tunnel_info *ti)
5013 {
5014 be_cfg_vxlan_port(netdev, ti, be_work_del_vxlan_port);
5015 }
5016
5017 static void be_add_vxlan_port(struct net_device *netdev,
5018 struct udp_tunnel_info *ti)
5019 {
5020 be_cfg_vxlan_port(netdev, ti, be_work_add_vxlan_port);
5021 }
5022
5023 static netdev_features_t be_features_check(struct sk_buff *skb,
5024 struct net_device *dev,
5025 netdev_features_t features)
5026 {
5027 struct be_adapter *adapter = netdev_priv(dev);
5028 u8 l4_hdr = 0;
5029
5030 /* The code below restricts offload features for some tunneled packets.
5031 * Offload features for normal (non tunnel) packets are unchanged.
5032 */
5033 if (!skb->encapsulation ||
5034 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
5035 return features;
5036
5037 /* It's an encapsulated packet and VxLAN offloads are enabled. We
5038 * should disable tunnel offload features if it's not a VxLAN packet,
5039 * as tunnel offloads have been enabled only for VxLAN. This is done to
5040 * allow other tunneled traffic like GRE work fine while VxLAN
5041 * offloads are configured in Skyhawk-R.
5042 */
5043 switch (vlan_get_protocol(skb)) {
5044 case htons(ETH_P_IP):
5045 l4_hdr = ip_hdr(skb)->protocol;
5046 break;
5047 case htons(ETH_P_IPV6):
5048 l4_hdr = ipv6_hdr(skb)->nexthdr;
5049 break;
5050 default:
5051 return features;
5052 }
5053
5054 if (l4_hdr != IPPROTO_UDP ||
5055 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
5056 skb->inner_protocol != htons(ETH_P_TEB) ||
5057 skb_inner_mac_header(skb) - skb_transport_header(skb) !=
5058 sizeof(struct udphdr) + sizeof(struct vxlanhdr) ||
5059 !adapter->vxlan_port ||
5060 udp_hdr(skb)->dest != adapter->vxlan_port)
5061 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
5062
5063 return features;
5064 }
5065
5066 static int be_get_phys_port_id(struct net_device *dev,
5067 struct netdev_phys_item_id *ppid)
5068 {
5069 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
5070 struct be_adapter *adapter = netdev_priv(dev);
5071 u8 *id;
5072
5073 if (MAX_PHYS_ITEM_ID_LEN < id_len)
5074 return -ENOSPC;
5075
5076 ppid->id[0] = adapter->hba_port_num + 1;
5077 id = &ppid->id[1];
5078 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
5079 i--, id += CNTL_SERIAL_NUM_WORD_SZ)
5080 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
5081
5082 ppid->id_len = id_len;
5083
5084 return 0;
5085 }
5086
5087 static void be_set_rx_mode(struct net_device *dev)
5088 {
5089 struct be_adapter *adapter = netdev_priv(dev);
5090 struct be_cmd_work *work;
5091
5092 work = be_alloc_work(adapter, be_work_set_rx_mode);
5093 if (work)
5094 queue_work(be_wq, &work->work);
5095 }
5096
5097 static const struct net_device_ops be_netdev_ops = {
5098 .ndo_open = be_open,
5099 .ndo_stop = be_close,
5100 .ndo_start_xmit = be_xmit,
5101 .ndo_set_rx_mode = be_set_rx_mode,
5102 .ndo_set_mac_address = be_mac_addr_set,
5103 .ndo_get_stats64 = be_get_stats64,
5104 .ndo_validate_addr = eth_validate_addr,
5105 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
5106 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
5107 .ndo_set_vf_mac = be_set_vf_mac,
5108 .ndo_set_vf_vlan = be_set_vf_vlan,
5109 .ndo_set_vf_rate = be_set_vf_tx_rate,
5110 .ndo_get_vf_config = be_get_vf_config,
5111 .ndo_set_vf_link_state = be_set_vf_link_state,
5112 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,
5113 #ifdef CONFIG_NET_POLL_CONTROLLER
5114 .ndo_poll_controller = be_netpoll,
5115 #endif
5116 .ndo_bridge_setlink = be_ndo_bridge_setlink,
5117 .ndo_bridge_getlink = be_ndo_bridge_getlink,
5118 .ndo_udp_tunnel_add = be_add_vxlan_port,
5119 .ndo_udp_tunnel_del = be_del_vxlan_port,
5120 .ndo_features_check = be_features_check,
5121 .ndo_get_phys_port_id = be_get_phys_port_id,
5122 };
5123
5124 static void be_netdev_init(struct net_device *netdev)
5125 {
5126 struct be_adapter *adapter = netdev_priv(netdev);
5127
5128 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5129 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
5130 NETIF_F_HW_VLAN_CTAG_TX;
5131 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
5132 netdev->hw_features |= NETIF_F_RXHASH;
5133
5134 netdev->features |= netdev->hw_features |
5135 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
5136
5137 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5138 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
5139
5140 netdev->priv_flags |= IFF_UNICAST_FLT;
5141
5142 netdev->flags |= IFF_MULTICAST;
5143
5144 netif_set_gso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
5145
5146 netdev->netdev_ops = &be_netdev_ops;
5147
5148 netdev->ethtool_ops = &be_ethtool_ops;
5149
5150 /* MTU range: 256 - 9000 */
5151 netdev->min_mtu = BE_MIN_MTU;
5152 netdev->max_mtu = BE_MAX_MTU;
5153 }
5154
5155 static void be_cleanup(struct be_adapter *adapter)
5156 {
5157 struct net_device *netdev = adapter->netdev;
5158
5159 rtnl_lock();
5160 netif_device_detach(netdev);
5161 if (netif_running(netdev))
5162 be_close(netdev);
5163 rtnl_unlock();
5164
5165 be_clear(adapter);
5166 }
5167
5168 static int be_resume(struct be_adapter *adapter)
5169 {
5170 struct net_device *netdev = adapter->netdev;
5171 int status;
5172
5173 status = be_setup(adapter);
5174 if (status)
5175 return status;
5176
5177 rtnl_lock();
5178 if (netif_running(netdev))
5179 status = be_open(netdev);
5180 rtnl_unlock();
5181
5182 if (status)
5183 return status;
5184
5185 netif_device_attach(netdev);
5186
5187 return 0;
5188 }
5189
5190 static void be_soft_reset(struct be_adapter *adapter)
5191 {
5192 u32 val;
5193
5194 dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n");
5195 val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5196 val |= SLIPORT_SOFTRESET_SR_MASK;
5197 iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5198 }
5199
5200 static bool be_err_is_recoverable(struct be_adapter *adapter)
5201 {
5202 struct be_error_recovery *err_rec = &adapter->error_recovery;
5203 unsigned long initial_idle_time =
5204 msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME);
5205 unsigned long recovery_interval =
5206 msecs_to_jiffies(ERR_RECOVERY_INTERVAL);
5207 u16 ue_err_code;
5208 u32 val;
5209
5210 val = be_POST_stage_get(adapter);
5211 if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR)
5212 return false;
5213 ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK;
5214 if (ue_err_code == 0)
5215 return false;
5216
5217 dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n",
5218 ue_err_code);
5219
5220 if (jiffies - err_rec->probe_time <= initial_idle_time) {
5221 dev_err(&adapter->pdev->dev,
5222 "Cannot recover within %lu sec from driver load\n",
5223 jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC);
5224 return false;
5225 }
5226
5227 if (err_rec->last_recovery_time &&
5228 (jiffies - err_rec->last_recovery_time <= recovery_interval)) {
5229 dev_err(&adapter->pdev->dev,
5230 "Cannot recover within %lu sec from last recovery\n",
5231 jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC);
5232 return false;
5233 }
5234
5235 if (ue_err_code == err_rec->last_err_code) {
5236 dev_err(&adapter->pdev->dev,
5237 "Cannot recover from a consecutive TPE error\n");
5238 return false;
5239 }
5240
5241 err_rec->last_recovery_time = jiffies;
5242 err_rec->last_err_code = ue_err_code;
5243 return true;
5244 }
5245
5246 static int be_tpe_recover(struct be_adapter *adapter)
5247 {
5248 struct be_error_recovery *err_rec = &adapter->error_recovery;
5249 int status = -EAGAIN;
5250 u32 val;
5251
5252 switch (err_rec->recovery_state) {
5253 case ERR_RECOVERY_ST_NONE:
5254 err_rec->recovery_state = ERR_RECOVERY_ST_DETECT;
5255 err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION;
5256 break;
5257
5258 case ERR_RECOVERY_ST_DETECT:
5259 val = be_POST_stage_get(adapter);
5260 if ((val & POST_STAGE_RECOVERABLE_ERR) !=
5261 POST_STAGE_RECOVERABLE_ERR) {
5262 dev_err(&adapter->pdev->dev,
5263 "Unrecoverable HW error detected: 0x%x\n", val);
5264 status = -EINVAL;
5265 err_rec->resched_delay = 0;
5266 break;
5267 }
5268
5269 dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n");
5270
5271 /* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR
5272 * milliseconds before it checks for final error status in
5273 * SLIPORT_SEMAPHORE to determine if recovery criteria is met.
5274 * If it does, then PF0 initiates a Soft Reset.
5275 */
5276 if (adapter->pf_num == 0) {
5277 err_rec->recovery_state = ERR_RECOVERY_ST_RESET;
5278 err_rec->resched_delay = err_rec->ue_to_reset_time -
5279 ERR_RECOVERY_UE_DETECT_DURATION;
5280 break;
5281 }
5282
5283 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5284 err_rec->resched_delay = err_rec->ue_to_poll_time -
5285 ERR_RECOVERY_UE_DETECT_DURATION;
5286 break;
5287
5288 case ERR_RECOVERY_ST_RESET:
5289 if (!be_err_is_recoverable(adapter)) {
5290 dev_err(&adapter->pdev->dev,
5291 "Failed to meet recovery criteria\n");
5292 status = -EIO;
5293 err_rec->resched_delay = 0;
5294 break;
5295 }
5296 be_soft_reset(adapter);
5297 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5298 err_rec->resched_delay = err_rec->ue_to_poll_time -
5299 err_rec->ue_to_reset_time;
5300 break;
5301
5302 case ERR_RECOVERY_ST_PRE_POLL:
5303 err_rec->recovery_state = ERR_RECOVERY_ST_REINIT;
5304 err_rec->resched_delay = 0;
5305 status = 0; /* done */
5306 break;
5307
5308 default:
5309 status = -EINVAL;
5310 err_rec->resched_delay = 0;
5311 break;
5312 }
5313
5314 return status;
5315 }
5316
5317 static int be_err_recover(struct be_adapter *adapter)
5318 {
5319 int status;
5320
5321 if (!lancer_chip(adapter)) {
5322 if (!adapter->error_recovery.recovery_supported ||
5323 adapter->priv_flags & BE_DISABLE_TPE_RECOVERY)
5324 return -EIO;
5325 status = be_tpe_recover(adapter);
5326 if (status)
5327 goto err;
5328 }
5329
5330 /* Wait for adapter to reach quiescent state before
5331 * destroying queues
5332 */
5333 status = be_fw_wait_ready(adapter);
5334 if (status)
5335 goto err;
5336
5337 adapter->flags |= BE_FLAGS_TRY_RECOVERY;
5338
5339 be_cleanup(adapter);
5340
5341 status = be_resume(adapter);
5342 if (status)
5343 goto err;
5344
5345 adapter->flags &= ~BE_FLAGS_TRY_RECOVERY;
5346
5347 err:
5348 return status;
5349 }
5350
5351 static void be_err_detection_task(struct work_struct *work)
5352 {
5353 struct be_error_recovery *err_rec =
5354 container_of(work, struct be_error_recovery,
5355 err_detection_work.work);
5356 struct be_adapter *adapter =
5357 container_of(err_rec, struct be_adapter,
5358 error_recovery);
5359 u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY;
5360 struct device *dev = &adapter->pdev->dev;
5361 int recovery_status;
5362
5363 be_detect_error(adapter);
5364 if (!be_check_error(adapter, BE_ERROR_HW))
5365 goto reschedule_task;
5366
5367 recovery_status = be_err_recover(adapter);
5368 if (!recovery_status) {
5369 err_rec->recovery_retries = 0;
5370 err_rec->recovery_state = ERR_RECOVERY_ST_NONE;
5371 dev_info(dev, "Adapter recovery successful\n");
5372 goto reschedule_task;
5373 } else if (!lancer_chip(adapter) && err_rec->resched_delay) {
5374 /* BEx/SH recovery state machine */
5375 if (adapter->pf_num == 0 &&
5376 err_rec->recovery_state > ERR_RECOVERY_ST_DETECT)
5377 dev_err(&adapter->pdev->dev,
5378 "Adapter recovery in progress\n");
5379 resched_delay = err_rec->resched_delay;
5380 goto reschedule_task;
5381 } else if (lancer_chip(adapter) && be_virtfn(adapter)) {
5382 /* For VFs, check if PF have allocated resources
5383 * every second.
5384 */
5385 dev_err(dev, "Re-trying adapter recovery\n");
5386 goto reschedule_task;
5387 } else if (lancer_chip(adapter) && err_rec->recovery_retries++ <
5388 ERR_RECOVERY_MAX_RETRY_COUNT) {
5389 /* In case of another error during recovery, it takes 30 sec
5390 * for adapter to come out of error. Retry error recovery after
5391 * this time interval.
5392 */
5393 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
5394 resched_delay = ERR_RECOVERY_RETRY_DELAY;
5395 goto reschedule_task;
5396 } else {
5397 dev_err(dev, "Adapter recovery failed\n");
5398 dev_err(dev, "Please reboot server to recover\n");
5399 }
5400
5401 return;
5402
5403 reschedule_task:
5404 be_schedule_err_detection(adapter, resched_delay);
5405 }
5406
5407 static void be_log_sfp_info(struct be_adapter *adapter)
5408 {
5409 int status;
5410
5411 status = be_cmd_query_sfp_info(adapter);
5412 if (!status) {
5413 dev_err(&adapter->pdev->dev,
5414 "Port %c: %s Vendor: %s part no: %s",
5415 adapter->port_name,
5416 be_misconfig_evt_port_state[adapter->phy_state],
5417 adapter->phy.vendor_name,
5418 adapter->phy.vendor_pn);
5419 }
5420 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
5421 }
5422
5423 static void be_worker(struct work_struct *work)
5424 {
5425 struct be_adapter *adapter =
5426 container_of(work, struct be_adapter, work.work);
5427 struct be_rx_obj *rxo;
5428 int i;
5429
5430 if (be_physfn(adapter) &&
5431 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5432 be_cmd_get_die_temperature(adapter);
5433
5434 /* when interrupts are not yet enabled, just reap any pending
5435 * mcc completions
5436 */
5437 if (!netif_running(adapter->netdev)) {
5438 local_bh_disable();
5439 be_process_mcc(adapter);
5440 local_bh_enable();
5441 goto reschedule;
5442 }
5443
5444 if (!adapter->stats_cmd_sent) {
5445 if (lancer_chip(adapter))
5446 lancer_cmd_get_pport_stats(adapter,
5447 &adapter->stats_cmd);
5448 else
5449 be_cmd_get_stats(adapter, &adapter->stats_cmd);
5450 }
5451
5452 for_all_rx_queues(adapter, rxo, i) {
5453 /* Replenish RX-queues starved due to memory
5454 * allocation failures.
5455 */
5456 if (rxo->rx_post_starved)
5457 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5458 }
5459
5460 /* EQ-delay update for Skyhawk is done while notifying EQ */
5461 if (!skyhawk_chip(adapter))
5462 be_eqd_update(adapter, false);
5463
5464 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5465 be_log_sfp_info(adapter);
5466
5467 reschedule:
5468 adapter->work_counter++;
5469 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
5470 }
5471
5472 static void be_unmap_pci_bars(struct be_adapter *adapter)
5473 {
5474 if (adapter->csr)
5475 pci_iounmap(adapter->pdev, adapter->csr);
5476 if (adapter->db)
5477 pci_iounmap(adapter->pdev, adapter->db);
5478 if (adapter->pcicfg && adapter->pcicfg_mapped)
5479 pci_iounmap(adapter->pdev, adapter->pcicfg);
5480 }
5481
5482 static int db_bar(struct be_adapter *adapter)
5483 {
5484 if (lancer_chip(adapter) || be_virtfn(adapter))
5485 return 0;
5486 else
5487 return 4;
5488 }
5489
5490 static int be_roce_map_pci_bars(struct be_adapter *adapter)
5491 {
5492 if (skyhawk_chip(adapter)) {
5493 adapter->roce_db.size = 4096;
5494 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5495 db_bar(adapter));
5496 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5497 db_bar(adapter));
5498 }
5499 return 0;
5500 }
5501
5502 static int be_map_pci_bars(struct be_adapter *adapter)
5503 {
5504 struct pci_dev *pdev = adapter->pdev;
5505 u8 __iomem *addr;
5506 u32 sli_intf;
5507
5508 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5509 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5510 SLI_INTF_FAMILY_SHIFT;
5511 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5512
5513 if (BEx_chip(adapter) && be_physfn(adapter)) {
5514 adapter->csr = pci_iomap(pdev, 2, 0);
5515 if (!adapter->csr)
5516 return -ENOMEM;
5517 }
5518
5519 addr = pci_iomap(pdev, db_bar(adapter), 0);
5520 if (!addr)
5521 goto pci_map_err;
5522 adapter->db = addr;
5523
5524 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5525 if (be_physfn(adapter)) {
5526 /* PCICFG is the 2nd BAR in BE2 */
5527 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5528 if (!addr)
5529 goto pci_map_err;
5530 adapter->pcicfg = addr;
5531 adapter->pcicfg_mapped = true;
5532 } else {
5533 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5534 adapter->pcicfg_mapped = false;
5535 }
5536 }
5537
5538 be_roce_map_pci_bars(adapter);
5539 return 0;
5540
5541 pci_map_err:
5542 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5543 be_unmap_pci_bars(adapter);
5544 return -ENOMEM;
5545 }
5546
5547 static void be_drv_cleanup(struct be_adapter *adapter)
5548 {
5549 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5550 struct device *dev = &adapter->pdev->dev;
5551
5552 if (mem->va)
5553 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5554
5555 mem = &adapter->rx_filter;
5556 if (mem->va)
5557 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5558
5559 mem = &adapter->stats_cmd;
5560 if (mem->va)
5561 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5562 }
5563
5564 /* Allocate and initialize various fields in be_adapter struct */
5565 static int be_drv_init(struct be_adapter *adapter)
5566 {
5567 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5568 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5569 struct be_dma_mem *rx_filter = &adapter->rx_filter;
5570 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5571 struct device *dev = &adapter->pdev->dev;
5572 int status = 0;
5573
5574 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5575 mbox_mem_alloc->va = dma_zalloc_coherent(dev, mbox_mem_alloc->size,
5576 &mbox_mem_alloc->dma,
5577 GFP_KERNEL);
5578 if (!mbox_mem_alloc->va)
5579 return -ENOMEM;
5580
5581 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5582 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5583 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5584
5585 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5586 rx_filter->va = dma_zalloc_coherent(dev, rx_filter->size,
5587 &rx_filter->dma, GFP_KERNEL);
5588 if (!rx_filter->va) {
5589 status = -ENOMEM;
5590 goto free_mbox;
5591 }
5592
5593 if (lancer_chip(adapter))
5594 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5595 else if (BE2_chip(adapter))
5596 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5597 else if (BE3_chip(adapter))
5598 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5599 else
5600 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5601 stats_cmd->va = dma_zalloc_coherent(dev, stats_cmd->size,
5602 &stats_cmd->dma, GFP_KERNEL);
5603 if (!stats_cmd->va) {
5604 status = -ENOMEM;
5605 goto free_rx_filter;
5606 }
5607
5608 mutex_init(&adapter->mbox_lock);
5609 mutex_init(&adapter->mcc_lock);
5610 mutex_init(&adapter->rx_filter_lock);
5611 spin_lock_init(&adapter->mcc_cq_lock);
5612 init_completion(&adapter->et_cmd_compl);
5613
5614 pci_save_state(adapter->pdev);
5615
5616 INIT_DELAYED_WORK(&adapter->work, be_worker);
5617
5618 adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE;
5619 adapter->error_recovery.resched_delay = 0;
5620 INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work,
5621 be_err_detection_task);
5622
5623 adapter->rx_fc = true;
5624 adapter->tx_fc = true;
5625
5626 /* Must be a power of 2 or else MODULO will BUG_ON */
5627 adapter->be_get_temp_freq = 64;
5628
5629 return 0;
5630
5631 free_rx_filter:
5632 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5633 free_mbox:
5634 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5635 mbox_mem_alloc->dma);
5636 return status;
5637 }
5638
5639 static void be_remove(struct pci_dev *pdev)
5640 {
5641 struct be_adapter *adapter = pci_get_drvdata(pdev);
5642
5643 if (!adapter)
5644 return;
5645
5646 be_roce_dev_remove(adapter);
5647 be_intr_set(adapter, false);
5648
5649 be_cancel_err_detection(adapter);
5650
5651 unregister_netdev(adapter->netdev);
5652
5653 be_clear(adapter);
5654
5655 if (!pci_vfs_assigned(adapter->pdev))
5656 be_cmd_reset_function(adapter);
5657
5658 /* tell fw we're done with firing cmds */
5659 be_cmd_fw_clean(adapter);
5660
5661 be_unmap_pci_bars(adapter);
5662 be_drv_cleanup(adapter);
5663
5664 pci_disable_pcie_error_reporting(pdev);
5665
5666 pci_release_regions(pdev);
5667 pci_disable_device(pdev);
5668
5669 free_netdev(adapter->netdev);
5670 }
5671
5672 static ssize_t be_hwmon_show_temp(struct device *dev,
5673 struct device_attribute *dev_attr,
5674 char *buf)
5675 {
5676 struct be_adapter *adapter = dev_get_drvdata(dev);
5677
5678 /* Unit: millidegree Celsius */
5679 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5680 return -EIO;
5681 else
5682 return sprintf(buf, "%u\n",
5683 adapter->hwmon_info.be_on_die_temp * 1000);
5684 }
5685
5686 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
5687 be_hwmon_show_temp, NULL, 1);
5688
5689 static struct attribute *be_hwmon_attrs[] = {
5690 &sensor_dev_attr_temp1_input.dev_attr.attr,
5691 NULL
5692 };
5693
5694 ATTRIBUTE_GROUPS(be_hwmon);
5695
5696 static char *mc_name(struct be_adapter *adapter)
5697 {
5698 char *str = ""; /* default */
5699
5700 switch (adapter->mc_type) {
5701 case UMC:
5702 str = "UMC";
5703 break;
5704 case FLEX10:
5705 str = "FLEX10";
5706 break;
5707 case vNIC1:
5708 str = "vNIC-1";
5709 break;
5710 case nPAR:
5711 str = "nPAR";
5712 break;
5713 case UFP:
5714 str = "UFP";
5715 break;
5716 case vNIC2:
5717 str = "vNIC-2";
5718 break;
5719 default:
5720 str = "";
5721 }
5722
5723 return str;
5724 }
5725
5726 static inline char *func_name(struct be_adapter *adapter)
5727 {
5728 return be_physfn(adapter) ? "PF" : "VF";
5729 }
5730
5731 static inline char *nic_name(struct pci_dev *pdev)
5732 {
5733 switch (pdev->device) {
5734 case OC_DEVICE_ID1:
5735 return OC_NAME;
5736 case OC_DEVICE_ID2:
5737 return OC_NAME_BE;
5738 case OC_DEVICE_ID3:
5739 case OC_DEVICE_ID4:
5740 return OC_NAME_LANCER;
5741 case BE_DEVICE_ID2:
5742 return BE3_NAME;
5743 case OC_DEVICE_ID5:
5744 case OC_DEVICE_ID6:
5745 return OC_NAME_SH;
5746 default:
5747 return BE_NAME;
5748 }
5749 }
5750
5751 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5752 {
5753 struct be_adapter *adapter;
5754 struct net_device *netdev;
5755 int status = 0;
5756
5757 dev_info(&pdev->dev, "%s version is %s\n", DRV_NAME, DRV_VER);
5758
5759 status = pci_enable_device(pdev);
5760 if (status)
5761 goto do_none;
5762
5763 status = pci_request_regions(pdev, DRV_NAME);
5764 if (status)
5765 goto disable_dev;
5766 pci_set_master(pdev);
5767
5768 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5769 if (!netdev) {
5770 status = -ENOMEM;
5771 goto rel_reg;
5772 }
5773 adapter = netdev_priv(netdev);
5774 adapter->pdev = pdev;
5775 pci_set_drvdata(pdev, adapter);
5776 adapter->netdev = netdev;
5777 SET_NETDEV_DEV(netdev, &pdev->dev);
5778
5779 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5780 if (!status) {
5781 netdev->features |= NETIF_F_HIGHDMA;
5782 } else {
5783 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
5784 if (status) {
5785 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5786 goto free_netdev;
5787 }
5788 }
5789
5790 status = pci_enable_pcie_error_reporting(pdev);
5791 if (!status)
5792 dev_info(&pdev->dev, "PCIe error reporting enabled\n");
5793
5794 status = be_map_pci_bars(adapter);
5795 if (status)
5796 goto free_netdev;
5797
5798 status = be_drv_init(adapter);
5799 if (status)
5800 goto unmap_bars;
5801
5802 status = be_setup(adapter);
5803 if (status)
5804 goto drv_cleanup;
5805
5806 be_netdev_init(netdev);
5807 status = register_netdev(netdev);
5808 if (status != 0)
5809 goto unsetup;
5810
5811 be_roce_dev_add(adapter);
5812
5813 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5814 adapter->error_recovery.probe_time = jiffies;
5815
5816 /* On Die temperature not supported for VF. */
5817 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5818 adapter->hwmon_info.hwmon_dev =
5819 devm_hwmon_device_register_with_groups(&pdev->dev,
5820 DRV_NAME,
5821 adapter,
5822 be_hwmon_groups);
5823 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5824 }
5825
5826 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5827 func_name(adapter), mc_name(adapter), adapter->port_name);
5828
5829 return 0;
5830
5831 unsetup:
5832 be_clear(adapter);
5833 drv_cleanup:
5834 be_drv_cleanup(adapter);
5835 unmap_bars:
5836 be_unmap_pci_bars(adapter);
5837 free_netdev:
5838 free_netdev(netdev);
5839 rel_reg:
5840 pci_release_regions(pdev);
5841 disable_dev:
5842 pci_disable_device(pdev);
5843 do_none:
5844 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5845 return status;
5846 }
5847
5848 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
5849 {
5850 struct be_adapter *adapter = pci_get_drvdata(pdev);
5851
5852 be_intr_set(adapter, false);
5853 be_cancel_err_detection(adapter);
5854
5855 be_cleanup(adapter);
5856
5857 pci_save_state(pdev);
5858 pci_disable_device(pdev);
5859 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5860 return 0;
5861 }
5862
5863 static int be_pci_resume(struct pci_dev *pdev)
5864 {
5865 struct be_adapter *adapter = pci_get_drvdata(pdev);
5866 int status = 0;
5867
5868 status = pci_enable_device(pdev);
5869 if (status)
5870 return status;
5871
5872 pci_restore_state(pdev);
5873
5874 status = be_resume(adapter);
5875 if (status)
5876 return status;
5877
5878 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5879
5880 return 0;
5881 }
5882
5883 /*
5884 * An FLR will stop BE from DMAing any data.
5885 */
5886 static void be_shutdown(struct pci_dev *pdev)
5887 {
5888 struct be_adapter *adapter = pci_get_drvdata(pdev);
5889
5890 if (!adapter)
5891 return;
5892
5893 be_roce_dev_shutdown(adapter);
5894 cancel_delayed_work_sync(&adapter->work);
5895 be_cancel_err_detection(adapter);
5896
5897 netif_device_detach(adapter->netdev);
5898
5899 be_cmd_reset_function(adapter);
5900
5901 pci_disable_device(pdev);
5902 }
5903
5904 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
5905 pci_channel_state_t state)
5906 {
5907 struct be_adapter *adapter = pci_get_drvdata(pdev);
5908
5909 dev_err(&adapter->pdev->dev, "EEH error detected\n");
5910
5911 be_roce_dev_remove(adapter);
5912
5913 if (!be_check_error(adapter, BE_ERROR_EEH)) {
5914 be_set_error(adapter, BE_ERROR_EEH);
5915
5916 be_cancel_err_detection(adapter);
5917
5918 be_cleanup(adapter);
5919 }
5920
5921 if (state == pci_channel_io_perm_failure)
5922 return PCI_ERS_RESULT_DISCONNECT;
5923
5924 pci_disable_device(pdev);
5925
5926 /* The error could cause the FW to trigger a flash debug dump.
5927 * Resetting the card while flash dump is in progress
5928 * can cause it not to recover; wait for it to finish.
5929 * Wait only for first function as it is needed only once per
5930 * adapter.
5931 */
5932 if (pdev->devfn == 0)
5933 ssleep(30);
5934
5935 return PCI_ERS_RESULT_NEED_RESET;
5936 }
5937
5938 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
5939 {
5940 struct be_adapter *adapter = pci_get_drvdata(pdev);
5941 int status;
5942
5943 dev_info(&adapter->pdev->dev, "EEH reset\n");
5944
5945 status = pci_enable_device(pdev);
5946 if (status)
5947 return PCI_ERS_RESULT_DISCONNECT;
5948
5949 pci_set_master(pdev);
5950 pci_restore_state(pdev);
5951
5952 /* Check if card is ok and fw is ready */
5953 dev_info(&adapter->pdev->dev,
5954 "Waiting for FW to be ready after EEH reset\n");
5955 status = be_fw_wait_ready(adapter);
5956 if (status)
5957 return PCI_ERS_RESULT_DISCONNECT;
5958
5959 pci_cleanup_aer_uncorrect_error_status(pdev);
5960 be_clear_error(adapter, BE_CLEAR_ALL);
5961 return PCI_ERS_RESULT_RECOVERED;
5962 }
5963
5964 static void be_eeh_resume(struct pci_dev *pdev)
5965 {
5966 int status = 0;
5967 struct be_adapter *adapter = pci_get_drvdata(pdev);
5968
5969 dev_info(&adapter->pdev->dev, "EEH resume\n");
5970
5971 pci_save_state(pdev);
5972
5973 status = be_resume(adapter);
5974 if (status)
5975 goto err;
5976
5977 be_roce_dev_add(adapter);
5978
5979 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5980 return;
5981 err:
5982 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
5983 }
5984
5985 static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
5986 {
5987 struct be_adapter *adapter = pci_get_drvdata(pdev);
5988 struct be_resources vft_res = {0};
5989 int status;
5990
5991 if (!num_vfs)
5992 be_vf_clear(adapter);
5993
5994 adapter->num_vfs = num_vfs;
5995
5996 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
5997 dev_warn(&pdev->dev,
5998 "Cannot disable VFs while they are assigned\n");
5999 return -EBUSY;
6000 }
6001
6002 /* When the HW is in SRIOV capable configuration, the PF-pool resources
6003 * are equally distributed across the max-number of VFs. The user may
6004 * request only a subset of the max-vfs to be enabled.
6005 * Based on num_vfs, redistribute the resources across num_vfs so that
6006 * each VF will have access to more number of resources.
6007 * This facility is not available in BE3 FW.
6008 * Also, this is done by FW in Lancer chip.
6009 */
6010 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
6011 be_calculate_vf_res(adapter, adapter->num_vfs,
6012 &vft_res);
6013 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
6014 adapter->num_vfs, &vft_res);
6015 if (status)
6016 dev_err(&pdev->dev,
6017 "Failed to optimize SR-IOV resources\n");
6018 }
6019
6020 status = be_get_resources(adapter);
6021 if (status)
6022 return be_cmd_status(status);
6023
6024 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
6025 rtnl_lock();
6026 status = be_update_queues(adapter);
6027 rtnl_unlock();
6028 if (status)
6029 return be_cmd_status(status);
6030
6031 if (adapter->num_vfs)
6032 status = be_vf_setup(adapter);
6033
6034 if (!status)
6035 return adapter->num_vfs;
6036
6037 return 0;
6038 }
6039
6040 static const struct pci_error_handlers be_eeh_handlers = {
6041 .error_detected = be_eeh_err_detected,
6042 .slot_reset = be_eeh_reset,
6043 .resume = be_eeh_resume,
6044 };
6045
6046 static struct pci_driver be_driver = {
6047 .name = DRV_NAME,
6048 .id_table = be_dev_ids,
6049 .probe = be_probe,
6050 .remove = be_remove,
6051 .suspend = be_suspend,
6052 .resume = be_pci_resume,
6053 .shutdown = be_shutdown,
6054 .sriov_configure = be_pci_sriov_configure,
6055 .err_handler = &be_eeh_handlers
6056 };
6057
6058 static int __init be_init_module(void)
6059 {
6060 int status;
6061
6062 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
6063 rx_frag_size != 2048) {
6064 printk(KERN_WARNING DRV_NAME
6065 " : Module param rx_frag_size must be 2048/4096/8192."
6066 " Using 2048\n");
6067 rx_frag_size = 2048;
6068 }
6069
6070 if (num_vfs > 0) {
6071 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
6072 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
6073 }
6074
6075 be_wq = create_singlethread_workqueue("be_wq");
6076 if (!be_wq) {
6077 pr_warn(DRV_NAME "workqueue creation failed\n");
6078 return -1;
6079 }
6080
6081 be_err_recovery_workq =
6082 create_singlethread_workqueue("be_err_recover");
6083 if (!be_err_recovery_workq)
6084 pr_warn(DRV_NAME "Could not create error recovery workqueue\n");
6085
6086 status = pci_register_driver(&be_driver);
6087 if (status) {
6088 destroy_workqueue(be_wq);
6089 be_destroy_err_recovery_workq();
6090 }
6091 return status;
6092 }
6093 module_init(be_init_module);
6094
6095 static void __exit be_exit_module(void)
6096 {
6097 pci_unregister_driver(&be_driver);
6098
6099 be_destroy_err_recovery_workq();
6100
6101 if (be_wq)
6102 destroy_workqueue(be_wq);
6103 }
6104 module_exit(be_exit_module);
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