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Merge remote-tracking branches 'asoc/fix/atmel', 'asoc/fix/compress', 'asoc/fix/da721...
[deliverable/linux.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33 /* num_vfs module param is obsolete.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 static const struct pci_device_id be_dev_ids[] = {
45 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
46 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
47 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
48 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
49 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
50 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
51 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
52 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
53 { 0 }
54 };
55 MODULE_DEVICE_TABLE(pci, be_dev_ids);
56 /* UE Status Low CSR */
57 static const char * const ue_status_low_desc[] = {
58 "CEV",
59 "CTX",
60 "DBUF",
61 "ERX",
62 "Host",
63 "MPU",
64 "NDMA",
65 "PTC ",
66 "RDMA ",
67 "RXF ",
68 "RXIPS ",
69 "RXULP0 ",
70 "RXULP1 ",
71 "RXULP2 ",
72 "TIM ",
73 "TPOST ",
74 "TPRE ",
75 "TXIPS ",
76 "TXULP0 ",
77 "TXULP1 ",
78 "UC ",
79 "WDMA ",
80 "TXULP2 ",
81 "HOST1 ",
82 "P0_OB_LINK ",
83 "P1_OB_LINK ",
84 "HOST_GPIO ",
85 "MBOX ",
86 "ERX2 ",
87 "SPARE ",
88 "JTAG ",
89 "MPU_INTPEND "
90 };
91
92 /* UE Status High CSR */
93 static const char * const ue_status_hi_desc[] = {
94 "LPCMEMHOST",
95 "MGMT_MAC",
96 "PCS0ONLINE",
97 "MPU_IRAM",
98 "PCS1ONLINE",
99 "PCTL0",
100 "PCTL1",
101 "PMEM",
102 "RR",
103 "TXPB",
104 "RXPP",
105 "XAUI",
106 "TXP",
107 "ARM",
108 "IPC",
109 "HOST2",
110 "HOST3",
111 "HOST4",
112 "HOST5",
113 "HOST6",
114 "HOST7",
115 "ECRC",
116 "Poison TLP",
117 "NETC",
118 "PERIPH",
119 "LLTXULP",
120 "D2P",
121 "RCON",
122 "LDMA",
123 "LLTXP",
124 "LLTXPB",
125 "Unknown"
126 };
127
128 #define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \
129 BE_IF_FLAGS_BROADCAST | \
130 BE_IF_FLAGS_MULTICAST | \
131 BE_IF_FLAGS_PASS_L3L4_ERRORS)
132
133 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
134 {
135 struct be_dma_mem *mem = &q->dma_mem;
136
137 if (mem->va) {
138 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
139 mem->dma);
140 mem->va = NULL;
141 }
142 }
143
144 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
145 u16 len, u16 entry_size)
146 {
147 struct be_dma_mem *mem = &q->dma_mem;
148
149 memset(q, 0, sizeof(*q));
150 q->len = len;
151 q->entry_size = entry_size;
152 mem->size = len * entry_size;
153 mem->va = dma_zalloc_coherent(&adapter->pdev->dev, mem->size, &mem->dma,
154 GFP_KERNEL);
155 if (!mem->va)
156 return -ENOMEM;
157 return 0;
158 }
159
160 static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
161 {
162 u32 reg, enabled;
163
164 pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
165 &reg);
166 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
167
168 if (!enabled && enable)
169 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
170 else if (enabled && !enable)
171 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
172 else
173 return;
174
175 pci_write_config_dword(adapter->pdev,
176 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
177 }
178
179 static void be_intr_set(struct be_adapter *adapter, bool enable)
180 {
181 int status = 0;
182
183 /* On lancer interrupts can't be controlled via this register */
184 if (lancer_chip(adapter))
185 return;
186
187 if (be_check_error(adapter, BE_ERROR_EEH))
188 return;
189
190 status = be_cmd_intr_set(adapter, enable);
191 if (status)
192 be_reg_intr_set(adapter, enable);
193 }
194
195 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
196 {
197 u32 val = 0;
198
199 if (be_check_error(adapter, BE_ERROR_HW))
200 return;
201
202 val |= qid & DB_RQ_RING_ID_MASK;
203 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
204
205 wmb();
206 iowrite32(val, adapter->db + DB_RQ_OFFSET);
207 }
208
209 static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
210 u16 posted)
211 {
212 u32 val = 0;
213
214 if (be_check_error(adapter, BE_ERROR_HW))
215 return;
216
217 val |= txo->q.id & DB_TXULP_RING_ID_MASK;
218 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
219
220 wmb();
221 iowrite32(val, adapter->db + txo->db_offset);
222 }
223
224 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
225 bool arm, bool clear_int, u16 num_popped,
226 u32 eq_delay_mult_enc)
227 {
228 u32 val = 0;
229
230 val |= qid & DB_EQ_RING_ID_MASK;
231 val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);
232
233 if (be_check_error(adapter, BE_ERROR_HW))
234 return;
235
236 if (arm)
237 val |= 1 << DB_EQ_REARM_SHIFT;
238 if (clear_int)
239 val |= 1 << DB_EQ_CLR_SHIFT;
240 val |= 1 << DB_EQ_EVNT_SHIFT;
241 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
242 val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;
243 iowrite32(val, adapter->db + DB_EQ_OFFSET);
244 }
245
246 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
247 {
248 u32 val = 0;
249
250 val |= qid & DB_CQ_RING_ID_MASK;
251 val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
252 DB_CQ_RING_ID_EXT_MASK_SHIFT);
253
254 if (be_check_error(adapter, BE_ERROR_HW))
255 return;
256
257 if (arm)
258 val |= 1 << DB_CQ_REARM_SHIFT;
259 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
260 iowrite32(val, adapter->db + DB_CQ_OFFSET);
261 }
262
263 static int be_mac_addr_set(struct net_device *netdev, void *p)
264 {
265 struct be_adapter *adapter = netdev_priv(netdev);
266 struct device *dev = &adapter->pdev->dev;
267 struct sockaddr *addr = p;
268 int status;
269 u8 mac[ETH_ALEN];
270 u32 old_pmac_id = adapter->pmac_id[0], curr_pmac_id = 0;
271
272 if (!is_valid_ether_addr(addr->sa_data))
273 return -EADDRNOTAVAIL;
274
275 /* Proceed further only if, User provided MAC is different
276 * from active MAC
277 */
278 if (ether_addr_equal(addr->sa_data, netdev->dev_addr))
279 return 0;
280
281 /* if device is not running, copy MAC to netdev->dev_addr */
282 if (!netif_running(netdev))
283 goto done;
284
285 /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
286 * privilege or if PF did not provision the new MAC address.
287 * On BE3, this cmd will always fail if the VF doesn't have the
288 * FILTMGMT privilege. This failure is OK, only if the PF programmed
289 * the MAC for the VF.
290 */
291 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
292 adapter->if_handle, &adapter->pmac_id[0], 0);
293 if (!status) {
294 curr_pmac_id = adapter->pmac_id[0];
295
296 /* Delete the old programmed MAC. This call may fail if the
297 * old MAC was already deleted by the PF driver.
298 */
299 if (adapter->pmac_id[0] != old_pmac_id)
300 be_cmd_pmac_del(adapter, adapter->if_handle,
301 old_pmac_id, 0);
302 }
303
304 /* Decide if the new MAC is successfully activated only after
305 * querying the FW
306 */
307 status = be_cmd_get_active_mac(adapter, curr_pmac_id, mac,
308 adapter->if_handle, true, 0);
309 if (status)
310 goto err;
311
312 /* The MAC change did not happen, either due to lack of privilege
313 * or PF didn't pre-provision.
314 */
315 if (!ether_addr_equal(addr->sa_data, mac)) {
316 status = -EPERM;
317 goto err;
318 }
319 done:
320 ether_addr_copy(netdev->dev_addr, addr->sa_data);
321 dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
322 return 0;
323 err:
324 dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
325 return status;
326 }
327
328 /* BE2 supports only v0 cmd */
329 static void *hw_stats_from_cmd(struct be_adapter *adapter)
330 {
331 if (BE2_chip(adapter)) {
332 struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
333
334 return &cmd->hw_stats;
335 } else if (BE3_chip(adapter)) {
336 struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
337
338 return &cmd->hw_stats;
339 } else {
340 struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
341
342 return &cmd->hw_stats;
343 }
344 }
345
346 /* BE2 supports only v0 cmd */
347 static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
348 {
349 if (BE2_chip(adapter)) {
350 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
351
352 return &hw_stats->erx;
353 } else if (BE3_chip(adapter)) {
354 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
355
356 return &hw_stats->erx;
357 } else {
358 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
359
360 return &hw_stats->erx;
361 }
362 }
363
364 static void populate_be_v0_stats(struct be_adapter *adapter)
365 {
366 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
367 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
368 struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
369 struct be_port_rxf_stats_v0 *port_stats =
370 &rxf_stats->port[adapter->port_num];
371 struct be_drv_stats *drvs = &adapter->drv_stats;
372
373 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
374 drvs->rx_pause_frames = port_stats->rx_pause_frames;
375 drvs->rx_crc_errors = port_stats->rx_crc_errors;
376 drvs->rx_control_frames = port_stats->rx_control_frames;
377 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
378 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
379 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
380 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
381 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
382 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
383 drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
384 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
385 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
386 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
387 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
388 drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
389 drvs->rx_dropped_header_too_small =
390 port_stats->rx_dropped_header_too_small;
391 drvs->rx_address_filtered =
392 port_stats->rx_address_filtered +
393 port_stats->rx_vlan_filtered;
394 drvs->rx_alignment_symbol_errors =
395 port_stats->rx_alignment_symbol_errors;
396
397 drvs->tx_pauseframes = port_stats->tx_pauseframes;
398 drvs->tx_controlframes = port_stats->tx_controlframes;
399
400 if (adapter->port_num)
401 drvs->jabber_events = rxf_stats->port1_jabber_events;
402 else
403 drvs->jabber_events = rxf_stats->port0_jabber_events;
404 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
405 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
406 drvs->forwarded_packets = rxf_stats->forwarded_packets;
407 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
408 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
409 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
410 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
411 }
412
413 static void populate_be_v1_stats(struct be_adapter *adapter)
414 {
415 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
416 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
417 struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
418 struct be_port_rxf_stats_v1 *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->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
424 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
425 drvs->rx_pause_frames = port_stats->rx_pause_frames;
426 drvs->rx_crc_errors = port_stats->rx_crc_errors;
427 drvs->rx_control_frames = port_stats->rx_control_frames;
428 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
429 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
430 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
431 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
432 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
433 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
434 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
435 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
436 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
437 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
438 drvs->rx_dropped_header_too_small =
439 port_stats->rx_dropped_header_too_small;
440 drvs->rx_input_fifo_overflow_drop =
441 port_stats->rx_input_fifo_overflow_drop;
442 drvs->rx_address_filtered = port_stats->rx_address_filtered;
443 drvs->rx_alignment_symbol_errors =
444 port_stats->rx_alignment_symbol_errors;
445 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
446 drvs->tx_pauseframes = port_stats->tx_pauseframes;
447 drvs->tx_controlframes = port_stats->tx_controlframes;
448 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
449 drvs->jabber_events = port_stats->jabber_events;
450 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
451 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
452 drvs->forwarded_packets = rxf_stats->forwarded_packets;
453 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
454 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
455 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
456 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
457 }
458
459 static void populate_be_v2_stats(struct be_adapter *adapter)
460 {
461 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
462 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
463 struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
464 struct be_port_rxf_stats_v2 *port_stats =
465 &rxf_stats->port[adapter->port_num];
466 struct be_drv_stats *drvs = &adapter->drv_stats;
467
468 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
469 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
470 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
471 drvs->rx_pause_frames = port_stats->rx_pause_frames;
472 drvs->rx_crc_errors = port_stats->rx_crc_errors;
473 drvs->rx_control_frames = port_stats->rx_control_frames;
474 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
475 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
476 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
477 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
478 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
479 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
480 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
481 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
482 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
483 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
484 drvs->rx_dropped_header_too_small =
485 port_stats->rx_dropped_header_too_small;
486 drvs->rx_input_fifo_overflow_drop =
487 port_stats->rx_input_fifo_overflow_drop;
488 drvs->rx_address_filtered = port_stats->rx_address_filtered;
489 drvs->rx_alignment_symbol_errors =
490 port_stats->rx_alignment_symbol_errors;
491 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
492 drvs->tx_pauseframes = port_stats->tx_pauseframes;
493 drvs->tx_controlframes = port_stats->tx_controlframes;
494 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
495 drvs->jabber_events = port_stats->jabber_events;
496 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
497 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
498 drvs->forwarded_packets = rxf_stats->forwarded_packets;
499 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
500 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
501 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
502 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
503 if (be_roce_supported(adapter)) {
504 drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
505 drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
506 drvs->rx_roce_frames = port_stats->roce_frames_received;
507 drvs->roce_drops_crc = port_stats->roce_drops_crc;
508 drvs->roce_drops_payload_len =
509 port_stats->roce_drops_payload_len;
510 }
511 }
512
513 static void populate_lancer_stats(struct be_adapter *adapter)
514 {
515 struct be_drv_stats *drvs = &adapter->drv_stats;
516 struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);
517
518 be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
519 drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
520 drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
521 drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
522 drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
523 drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
524 drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
525 drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
526 drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
527 drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
528 drvs->rx_dropped_tcp_length =
529 pport_stats->rx_dropped_invalid_tcp_length;
530 drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
531 drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
532 drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
533 drvs->rx_dropped_header_too_small =
534 pport_stats->rx_dropped_header_too_small;
535 drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
536 drvs->rx_address_filtered =
537 pport_stats->rx_address_filtered +
538 pport_stats->rx_vlan_filtered;
539 drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
540 drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
541 drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
542 drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
543 drvs->jabber_events = pport_stats->rx_jabbers;
544 drvs->forwarded_packets = pport_stats->num_forwards_lo;
545 drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
546 drvs->rx_drops_too_many_frags =
547 pport_stats->rx_drops_too_many_frags_lo;
548 }
549
550 static void accumulate_16bit_val(u32 *acc, u16 val)
551 {
552 #define lo(x) (x & 0xFFFF)
553 #define hi(x) (x & 0xFFFF0000)
554 bool wrapped = val < lo(*acc);
555 u32 newacc = hi(*acc) + val;
556
557 if (wrapped)
558 newacc += 65536;
559 ACCESS_ONCE(*acc) = newacc;
560 }
561
562 static void populate_erx_stats(struct be_adapter *adapter,
563 struct be_rx_obj *rxo, u32 erx_stat)
564 {
565 if (!BEx_chip(adapter))
566 rx_stats(rxo)->rx_drops_no_frags = erx_stat;
567 else
568 /* below erx HW counter can actually wrap around after
569 * 65535. Driver accumulates a 32-bit value
570 */
571 accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
572 (u16)erx_stat);
573 }
574
575 void be_parse_stats(struct be_adapter *adapter)
576 {
577 struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
578 struct be_rx_obj *rxo;
579 int i;
580 u32 erx_stat;
581
582 if (lancer_chip(adapter)) {
583 populate_lancer_stats(adapter);
584 } else {
585 if (BE2_chip(adapter))
586 populate_be_v0_stats(adapter);
587 else if (BE3_chip(adapter))
588 /* for BE3 */
589 populate_be_v1_stats(adapter);
590 else
591 populate_be_v2_stats(adapter);
592
593 /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
594 for_all_rx_queues(adapter, rxo, i) {
595 erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
596 populate_erx_stats(adapter, rxo, erx_stat);
597 }
598 }
599 }
600
601 static struct rtnl_link_stats64 *be_get_stats64(struct net_device *netdev,
602 struct rtnl_link_stats64 *stats)
603 {
604 struct be_adapter *adapter = netdev_priv(netdev);
605 struct be_drv_stats *drvs = &adapter->drv_stats;
606 struct be_rx_obj *rxo;
607 struct be_tx_obj *txo;
608 u64 pkts, bytes;
609 unsigned int start;
610 int i;
611
612 for_all_rx_queues(adapter, rxo, i) {
613 const struct be_rx_stats *rx_stats = rx_stats(rxo);
614
615 do {
616 start = u64_stats_fetch_begin_irq(&rx_stats->sync);
617 pkts = rx_stats(rxo)->rx_pkts;
618 bytes = rx_stats(rxo)->rx_bytes;
619 } while (u64_stats_fetch_retry_irq(&rx_stats->sync, start));
620 stats->rx_packets += pkts;
621 stats->rx_bytes += bytes;
622 stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
623 stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
624 rx_stats(rxo)->rx_drops_no_frags;
625 }
626
627 for_all_tx_queues(adapter, txo, i) {
628 const struct be_tx_stats *tx_stats = tx_stats(txo);
629
630 do {
631 start = u64_stats_fetch_begin_irq(&tx_stats->sync);
632 pkts = tx_stats(txo)->tx_pkts;
633 bytes = tx_stats(txo)->tx_bytes;
634 } while (u64_stats_fetch_retry_irq(&tx_stats->sync, start));
635 stats->tx_packets += pkts;
636 stats->tx_bytes += bytes;
637 }
638
639 /* bad pkts received */
640 stats->rx_errors = drvs->rx_crc_errors +
641 drvs->rx_alignment_symbol_errors +
642 drvs->rx_in_range_errors +
643 drvs->rx_out_range_errors +
644 drvs->rx_frame_too_long +
645 drvs->rx_dropped_too_small +
646 drvs->rx_dropped_too_short +
647 drvs->rx_dropped_header_too_small +
648 drvs->rx_dropped_tcp_length +
649 drvs->rx_dropped_runt;
650
651 /* detailed rx errors */
652 stats->rx_length_errors = drvs->rx_in_range_errors +
653 drvs->rx_out_range_errors +
654 drvs->rx_frame_too_long;
655
656 stats->rx_crc_errors = drvs->rx_crc_errors;
657
658 /* frame alignment errors */
659 stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
660
661 /* receiver fifo overrun */
662 /* drops_no_pbuf is no per i/f, it's per BE card */
663 stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
664 drvs->rx_input_fifo_overflow_drop +
665 drvs->rx_drops_no_pbuf;
666 return stats;
667 }
668
669 void be_link_status_update(struct be_adapter *adapter, u8 link_status)
670 {
671 struct net_device *netdev = adapter->netdev;
672
673 if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
674 netif_carrier_off(netdev);
675 adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
676 }
677
678 if (link_status)
679 netif_carrier_on(netdev);
680 else
681 netif_carrier_off(netdev);
682
683 netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
684 }
685
686 static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
687 {
688 struct be_tx_stats *stats = tx_stats(txo);
689 u64 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
690
691 u64_stats_update_begin(&stats->sync);
692 stats->tx_reqs++;
693 stats->tx_bytes += skb->len;
694 stats->tx_pkts += tx_pkts;
695 if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
696 stats->tx_vxlan_offload_pkts += tx_pkts;
697 u64_stats_update_end(&stats->sync);
698 }
699
700 /* Returns number of WRBs needed for the skb */
701 static u32 skb_wrb_cnt(struct sk_buff *skb)
702 {
703 /* +1 for the header wrb */
704 return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;
705 }
706
707 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
708 {
709 wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));
710 wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));
711 wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);
712 wrb->rsvd0 = 0;
713 }
714
715 /* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb
716 * to avoid the swap and shift/mask operations in wrb_fill().
717 */
718 static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)
719 {
720 wrb->frag_pa_hi = 0;
721 wrb->frag_pa_lo = 0;
722 wrb->frag_len = 0;
723 wrb->rsvd0 = 0;
724 }
725
726 static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
727 struct sk_buff *skb)
728 {
729 u8 vlan_prio;
730 u16 vlan_tag;
731
732 vlan_tag = skb_vlan_tag_get(skb);
733 vlan_prio = (vlan_tag & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
734 /* If vlan priority provided by OS is NOT in available bmap */
735 if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
736 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
737 adapter->recommended_prio_bits;
738
739 return vlan_tag;
740 }
741
742 /* Used only for IP tunnel packets */
743 static u16 skb_inner_ip_proto(struct sk_buff *skb)
744 {
745 return (inner_ip_hdr(skb)->version == 4) ?
746 inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
747 }
748
749 static u16 skb_ip_proto(struct sk_buff *skb)
750 {
751 return (ip_hdr(skb)->version == 4) ?
752 ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
753 }
754
755 static inline bool be_is_txq_full(struct be_tx_obj *txo)
756 {
757 return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;
758 }
759
760 static inline bool be_can_txq_wake(struct be_tx_obj *txo)
761 {
762 return atomic_read(&txo->q.used) < txo->q.len / 2;
763 }
764
765 static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)
766 {
767 return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;
768 }
769
770 static void be_get_wrb_params_from_skb(struct be_adapter *adapter,
771 struct sk_buff *skb,
772 struct be_wrb_params *wrb_params)
773 {
774 u16 proto;
775
776 if (skb_is_gso(skb)) {
777 BE_WRB_F_SET(wrb_params->features, LSO, 1);
778 wrb_params->lso_mss = skb_shinfo(skb)->gso_size;
779 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
780 BE_WRB_F_SET(wrb_params->features, LSO6, 1);
781 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
782 if (skb->encapsulation) {
783 BE_WRB_F_SET(wrb_params->features, IPCS, 1);
784 proto = skb_inner_ip_proto(skb);
785 } else {
786 proto = skb_ip_proto(skb);
787 }
788 if (proto == IPPROTO_TCP)
789 BE_WRB_F_SET(wrb_params->features, TCPCS, 1);
790 else if (proto == IPPROTO_UDP)
791 BE_WRB_F_SET(wrb_params->features, UDPCS, 1);
792 }
793
794 if (skb_vlan_tag_present(skb)) {
795 BE_WRB_F_SET(wrb_params->features, VLAN, 1);
796 wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);
797 }
798
799 BE_WRB_F_SET(wrb_params->features, CRC, 1);
800 }
801
802 static void wrb_fill_hdr(struct be_adapter *adapter,
803 struct be_eth_hdr_wrb *hdr,
804 struct be_wrb_params *wrb_params,
805 struct sk_buff *skb)
806 {
807 memset(hdr, 0, sizeof(*hdr));
808
809 SET_TX_WRB_HDR_BITS(crc, hdr,
810 BE_WRB_F_GET(wrb_params->features, CRC));
811 SET_TX_WRB_HDR_BITS(ipcs, hdr,
812 BE_WRB_F_GET(wrb_params->features, IPCS));
813 SET_TX_WRB_HDR_BITS(tcpcs, hdr,
814 BE_WRB_F_GET(wrb_params->features, TCPCS));
815 SET_TX_WRB_HDR_BITS(udpcs, hdr,
816 BE_WRB_F_GET(wrb_params->features, UDPCS));
817
818 SET_TX_WRB_HDR_BITS(lso, hdr,
819 BE_WRB_F_GET(wrb_params->features, LSO));
820 SET_TX_WRB_HDR_BITS(lso6, hdr,
821 BE_WRB_F_GET(wrb_params->features, LSO6));
822 SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);
823
824 /* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this
825 * hack is not needed, the evt bit is set while ringing DB.
826 */
827 SET_TX_WRB_HDR_BITS(event, hdr,
828 BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));
829 SET_TX_WRB_HDR_BITS(vlan, hdr,
830 BE_WRB_F_GET(wrb_params->features, VLAN));
831 SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);
832
833 SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));
834 SET_TX_WRB_HDR_BITS(len, hdr, skb->len);
835 SET_TX_WRB_HDR_BITS(mgmt, hdr,
836 BE_WRB_F_GET(wrb_params->features, OS2BMC));
837 }
838
839 static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
840 bool unmap_single)
841 {
842 dma_addr_t dma;
843 u32 frag_len = le32_to_cpu(wrb->frag_len);
844
845
846 dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |
847 (u64)le32_to_cpu(wrb->frag_pa_lo);
848 if (frag_len) {
849 if (unmap_single)
850 dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);
851 else
852 dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);
853 }
854 }
855
856 /* Grab a WRB header for xmit */
857 static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)
858 {
859 u32 head = txo->q.head;
860
861 queue_head_inc(&txo->q);
862 return head;
863 }
864
865 /* Set up the WRB header for xmit */
866 static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,
867 struct be_tx_obj *txo,
868 struct be_wrb_params *wrb_params,
869 struct sk_buff *skb, u16 head)
870 {
871 u32 num_frags = skb_wrb_cnt(skb);
872 struct be_queue_info *txq = &txo->q;
873 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);
874
875 wrb_fill_hdr(adapter, hdr, wrb_params, skb);
876 be_dws_cpu_to_le(hdr, sizeof(*hdr));
877
878 BUG_ON(txo->sent_skb_list[head]);
879 txo->sent_skb_list[head] = skb;
880 txo->last_req_hdr = head;
881 atomic_add(num_frags, &txq->used);
882 txo->last_req_wrb_cnt = num_frags;
883 txo->pend_wrb_cnt += num_frags;
884 }
885
886 /* Setup a WRB fragment (buffer descriptor) for xmit */
887 static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,
888 int len)
889 {
890 struct be_eth_wrb *wrb;
891 struct be_queue_info *txq = &txo->q;
892
893 wrb = queue_head_node(txq);
894 wrb_fill(wrb, busaddr, len);
895 queue_head_inc(txq);
896 }
897
898 /* Bring the queue back to the state it was in before be_xmit_enqueue() routine
899 * was invoked. The producer index is restored to the previous packet and the
900 * WRBs of the current packet are unmapped. Invoked to handle tx setup errors.
901 */
902 static void be_xmit_restore(struct be_adapter *adapter,
903 struct be_tx_obj *txo, u32 head, bool map_single,
904 u32 copied)
905 {
906 struct device *dev;
907 struct be_eth_wrb *wrb;
908 struct be_queue_info *txq = &txo->q;
909
910 dev = &adapter->pdev->dev;
911 txq->head = head;
912
913 /* skip the first wrb (hdr); it's not mapped */
914 queue_head_inc(txq);
915 while (copied) {
916 wrb = queue_head_node(txq);
917 unmap_tx_frag(dev, wrb, map_single);
918 map_single = false;
919 copied -= le32_to_cpu(wrb->frag_len);
920 queue_head_inc(txq);
921 }
922
923 txq->head = head;
924 }
925
926 /* Enqueue the given packet for transmit. This routine allocates WRBs for the
927 * packet, dma maps the packet buffers and sets up the WRBs. Returns the number
928 * of WRBs used up by the packet.
929 */
930 static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,
931 struct sk_buff *skb,
932 struct be_wrb_params *wrb_params)
933 {
934 u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);
935 struct device *dev = &adapter->pdev->dev;
936 struct be_queue_info *txq = &txo->q;
937 bool map_single = false;
938 u32 head = txq->head;
939 dma_addr_t busaddr;
940 int len;
941
942 head = be_tx_get_wrb_hdr(txo);
943
944 if (skb->len > skb->data_len) {
945 len = skb_headlen(skb);
946
947 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
948 if (dma_mapping_error(dev, busaddr))
949 goto dma_err;
950 map_single = true;
951 be_tx_setup_wrb_frag(txo, busaddr, len);
952 copied += len;
953 }
954
955 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
956 const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i];
957 len = skb_frag_size(frag);
958
959 busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE);
960 if (dma_mapping_error(dev, busaddr))
961 goto dma_err;
962 be_tx_setup_wrb_frag(txo, busaddr, len);
963 copied += len;
964 }
965
966 be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head);
967
968 be_tx_stats_update(txo, skb);
969 return wrb_cnt;
970
971 dma_err:
972 adapter->drv_stats.dma_map_errors++;
973 be_xmit_restore(adapter, txo, head, map_single, copied);
974 return 0;
975 }
976
977 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
978 {
979 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
980 }
981
982 static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
983 struct sk_buff *skb,
984 struct be_wrb_params
985 *wrb_params)
986 {
987 u16 vlan_tag = 0;
988
989 skb = skb_share_check(skb, GFP_ATOMIC);
990 if (unlikely(!skb))
991 return skb;
992
993 if (skb_vlan_tag_present(skb))
994 vlan_tag = be_get_tx_vlan_tag(adapter, skb);
995
996 if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
997 if (!vlan_tag)
998 vlan_tag = adapter->pvid;
999 /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
1000 * skip VLAN insertion
1001 */
1002 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1003 }
1004
1005 if (vlan_tag) {
1006 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1007 vlan_tag);
1008 if (unlikely(!skb))
1009 return skb;
1010 skb->vlan_tci = 0;
1011 }
1012
1013 /* Insert the outer VLAN, if any */
1014 if (adapter->qnq_vid) {
1015 vlan_tag = adapter->qnq_vid;
1016 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1017 vlan_tag);
1018 if (unlikely(!skb))
1019 return skb;
1020 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1021 }
1022
1023 return skb;
1024 }
1025
1026 static bool be_ipv6_exthdr_check(struct sk_buff *skb)
1027 {
1028 struct ethhdr *eh = (struct ethhdr *)skb->data;
1029 u16 offset = ETH_HLEN;
1030
1031 if (eh->h_proto == htons(ETH_P_IPV6)) {
1032 struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);
1033
1034 offset += sizeof(struct ipv6hdr);
1035 if (ip6h->nexthdr != NEXTHDR_TCP &&
1036 ip6h->nexthdr != NEXTHDR_UDP) {
1037 struct ipv6_opt_hdr *ehdr =
1038 (struct ipv6_opt_hdr *)(skb->data + offset);
1039
1040 /* offending pkt: 2nd byte following IPv6 hdr is 0xff */
1041 if (ehdr->hdrlen == 0xff)
1042 return true;
1043 }
1044 }
1045 return false;
1046 }
1047
1048 static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)
1049 {
1050 return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid;
1051 }
1052
1053 static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb)
1054 {
1055 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
1056 }
1057
1058 static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
1059 struct sk_buff *skb,
1060 struct be_wrb_params
1061 *wrb_params)
1062 {
1063 struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
1064 unsigned int eth_hdr_len;
1065 struct iphdr *ip;
1066
1067 /* For padded packets, BE HW modifies tot_len field in IP header
1068 * incorrecly when VLAN tag is inserted by HW.
1069 * For padded packets, Lancer computes incorrect checksum.
1070 */
1071 eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
1072 VLAN_ETH_HLEN : ETH_HLEN;
1073 if (skb->len <= 60 &&
1074 (lancer_chip(adapter) || skb_vlan_tag_present(skb)) &&
1075 is_ipv4_pkt(skb)) {
1076 ip = (struct iphdr *)ip_hdr(skb);
1077 pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
1078 }
1079
1080 /* If vlan tag is already inlined in the packet, skip HW VLAN
1081 * tagging in pvid-tagging mode
1082 */
1083 if (be_pvid_tagging_enabled(adapter) &&
1084 veh->h_vlan_proto == htons(ETH_P_8021Q))
1085 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1086
1087 /* HW has a bug wherein it will calculate CSUM for VLAN
1088 * pkts even though it is disabled.
1089 * Manually insert VLAN in pkt.
1090 */
1091 if (skb->ip_summed != CHECKSUM_PARTIAL &&
1092 skb_vlan_tag_present(skb)) {
1093 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1094 if (unlikely(!skb))
1095 goto err;
1096 }
1097
1098 /* HW may lockup when VLAN HW tagging is requested on
1099 * certain ipv6 packets. Drop such pkts if the HW workaround to
1100 * skip HW tagging is not enabled by FW.
1101 */
1102 if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) &&
1103 (adapter->pvid || adapter->qnq_vid) &&
1104 !qnq_async_evt_rcvd(adapter)))
1105 goto tx_drop;
1106
1107 /* Manual VLAN tag insertion to prevent:
1108 * ASIC lockup when the ASIC inserts VLAN tag into
1109 * certain ipv6 packets. Insert VLAN tags in driver,
1110 * and set event, completion, vlan bits accordingly
1111 * in the Tx WRB.
1112 */
1113 if (be_ipv6_tx_stall_chk(adapter, skb) &&
1114 be_vlan_tag_tx_chk(adapter, skb)) {
1115 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1116 if (unlikely(!skb))
1117 goto err;
1118 }
1119
1120 return skb;
1121 tx_drop:
1122 dev_kfree_skb_any(skb);
1123 err:
1124 return NULL;
1125 }
1126
1127 static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,
1128 struct sk_buff *skb,
1129 struct be_wrb_params *wrb_params)
1130 {
1131 int err;
1132
1133 /* Lancer, SH and BE3 in SRIOV mode have a bug wherein
1134 * packets that are 32b or less may cause a transmit stall
1135 * on that port. The workaround is to pad such packets
1136 * (len <= 32 bytes) to a minimum length of 36b.
1137 */
1138 if (skb->len <= 32) {
1139 if (skb_put_padto(skb, 36))
1140 return NULL;
1141 }
1142
1143 if (BEx_chip(adapter) || lancer_chip(adapter)) {
1144 skb = be_lancer_xmit_workarounds(adapter, skb, wrb_params);
1145 if (!skb)
1146 return NULL;
1147 }
1148
1149 /* The stack can send us skbs with length greater than
1150 * what the HW can handle. Trim the extra bytes.
1151 */
1152 WARN_ON_ONCE(skb->len > BE_MAX_GSO_SIZE);
1153 err = pskb_trim(skb, BE_MAX_GSO_SIZE);
1154 WARN_ON(err);
1155
1156 return skb;
1157 }
1158
1159 static void be_xmit_flush(struct be_adapter *adapter, struct be_tx_obj *txo)
1160 {
1161 struct be_queue_info *txq = &txo->q;
1162 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, txo->last_req_hdr);
1163
1164 /* Mark the last request eventable if it hasn't been marked already */
1165 if (!(hdr->dw[2] & cpu_to_le32(TX_HDR_WRB_EVT)))
1166 hdr->dw[2] |= cpu_to_le32(TX_HDR_WRB_EVT | TX_HDR_WRB_COMPL);
1167
1168 /* compose a dummy wrb if there are odd set of wrbs to notify */
1169 if (!lancer_chip(adapter) && (txo->pend_wrb_cnt & 1)) {
1170 wrb_fill_dummy(queue_head_node(txq));
1171 queue_head_inc(txq);
1172 atomic_inc(&txq->used);
1173 txo->pend_wrb_cnt++;
1174 hdr->dw[2] &= ~cpu_to_le32(TX_HDR_WRB_NUM_MASK <<
1175 TX_HDR_WRB_NUM_SHIFT);
1176 hdr->dw[2] |= cpu_to_le32((txo->last_req_wrb_cnt + 1) <<
1177 TX_HDR_WRB_NUM_SHIFT);
1178 }
1179 be_txq_notify(adapter, txo, txo->pend_wrb_cnt);
1180 txo->pend_wrb_cnt = 0;
1181 }
1182
1183 /* OS2BMC related */
1184
1185 #define DHCP_CLIENT_PORT 68
1186 #define DHCP_SERVER_PORT 67
1187 #define NET_BIOS_PORT1 137
1188 #define NET_BIOS_PORT2 138
1189 #define DHCPV6_RAS_PORT 547
1190
1191 #define is_mc_allowed_on_bmc(adapter, eh) \
1192 (!is_multicast_filt_enabled(adapter) && \
1193 is_multicast_ether_addr(eh->h_dest) && \
1194 !is_broadcast_ether_addr(eh->h_dest))
1195
1196 #define is_bc_allowed_on_bmc(adapter, eh) \
1197 (!is_broadcast_filt_enabled(adapter) && \
1198 is_broadcast_ether_addr(eh->h_dest))
1199
1200 #define is_arp_allowed_on_bmc(adapter, skb) \
1201 (is_arp(skb) && is_arp_filt_enabled(adapter))
1202
1203 #define is_broadcast_packet(eh, adapter) \
1204 (is_multicast_ether_addr(eh->h_dest) && \
1205 !compare_ether_addr(eh->h_dest, adapter->netdev->broadcast))
1206
1207 #define is_arp(skb) (skb->protocol == htons(ETH_P_ARP))
1208
1209 #define is_arp_filt_enabled(adapter) \
1210 (adapter->bmc_filt_mask & (BMC_FILT_BROADCAST_ARP))
1211
1212 #define is_dhcp_client_filt_enabled(adapter) \
1213 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_CLIENT)
1214
1215 #define is_dhcp_srvr_filt_enabled(adapter) \
1216 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_SERVER)
1217
1218 #define is_nbios_filt_enabled(adapter) \
1219 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_NET_BIOS)
1220
1221 #define is_ipv6_na_filt_enabled(adapter) \
1222 (adapter->bmc_filt_mask & \
1223 BMC_FILT_MULTICAST_IPV6_NEIGH_ADVER)
1224
1225 #define is_ipv6_ra_filt_enabled(adapter) \
1226 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RA)
1227
1228 #define is_ipv6_ras_filt_enabled(adapter) \
1229 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RAS)
1230
1231 #define is_broadcast_filt_enabled(adapter) \
1232 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST)
1233
1234 #define is_multicast_filt_enabled(adapter) \
1235 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST)
1236
1237 static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
1238 struct sk_buff **skb)
1239 {
1240 struct ethhdr *eh = (struct ethhdr *)(*skb)->data;
1241 bool os2bmc = false;
1242
1243 if (!be_is_os2bmc_enabled(adapter))
1244 goto done;
1245
1246 if (!is_multicast_ether_addr(eh->h_dest))
1247 goto done;
1248
1249 if (is_mc_allowed_on_bmc(adapter, eh) ||
1250 is_bc_allowed_on_bmc(adapter, eh) ||
1251 is_arp_allowed_on_bmc(adapter, (*skb))) {
1252 os2bmc = true;
1253 goto done;
1254 }
1255
1256 if ((*skb)->protocol == htons(ETH_P_IPV6)) {
1257 struct ipv6hdr *hdr = ipv6_hdr((*skb));
1258 u8 nexthdr = hdr->nexthdr;
1259
1260 if (nexthdr == IPPROTO_ICMPV6) {
1261 struct icmp6hdr *icmp6 = icmp6_hdr((*skb));
1262
1263 switch (icmp6->icmp6_type) {
1264 case NDISC_ROUTER_ADVERTISEMENT:
1265 os2bmc = is_ipv6_ra_filt_enabled(adapter);
1266 goto done;
1267 case NDISC_NEIGHBOUR_ADVERTISEMENT:
1268 os2bmc = is_ipv6_na_filt_enabled(adapter);
1269 goto done;
1270 default:
1271 break;
1272 }
1273 }
1274 }
1275
1276 if (is_udp_pkt((*skb))) {
1277 struct udphdr *udp = udp_hdr((*skb));
1278
1279 switch (ntohs(udp->dest)) {
1280 case DHCP_CLIENT_PORT:
1281 os2bmc = is_dhcp_client_filt_enabled(adapter);
1282 goto done;
1283 case DHCP_SERVER_PORT:
1284 os2bmc = is_dhcp_srvr_filt_enabled(adapter);
1285 goto done;
1286 case NET_BIOS_PORT1:
1287 case NET_BIOS_PORT2:
1288 os2bmc = is_nbios_filt_enabled(adapter);
1289 goto done;
1290 case DHCPV6_RAS_PORT:
1291 os2bmc = is_ipv6_ras_filt_enabled(adapter);
1292 goto done;
1293 default:
1294 break;
1295 }
1296 }
1297 done:
1298 /* For packets over a vlan, which are destined
1299 * to BMC, asic expects the vlan to be inline in the packet.
1300 */
1301 if (os2bmc)
1302 *skb = be_insert_vlan_in_pkt(adapter, *skb, NULL);
1303
1304 return os2bmc;
1305 }
1306
1307 static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
1308 {
1309 struct be_adapter *adapter = netdev_priv(netdev);
1310 u16 q_idx = skb_get_queue_mapping(skb);
1311 struct be_tx_obj *txo = &adapter->tx_obj[q_idx];
1312 struct be_wrb_params wrb_params = { 0 };
1313 bool flush = !skb->xmit_more;
1314 u16 wrb_cnt;
1315
1316 skb = be_xmit_workarounds(adapter, skb, &wrb_params);
1317 if (unlikely(!skb))
1318 goto drop;
1319
1320 be_get_wrb_params_from_skb(adapter, skb, &wrb_params);
1321
1322 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1323 if (unlikely(!wrb_cnt)) {
1324 dev_kfree_skb_any(skb);
1325 goto drop;
1326 }
1327
1328 /* if os2bmc is enabled and if the pkt is destined to bmc,
1329 * enqueue the pkt a 2nd time with mgmt bit set.
1330 */
1331 if (be_send_pkt_to_bmc(adapter, &skb)) {
1332 BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);
1333 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1334 if (unlikely(!wrb_cnt))
1335 goto drop;
1336 else
1337 skb_get(skb);
1338 }
1339
1340 if (be_is_txq_full(txo)) {
1341 netif_stop_subqueue(netdev, q_idx);
1342 tx_stats(txo)->tx_stops++;
1343 }
1344
1345 if (flush || __netif_subqueue_stopped(netdev, q_idx))
1346 be_xmit_flush(adapter, txo);
1347
1348 return NETDEV_TX_OK;
1349 drop:
1350 tx_stats(txo)->tx_drv_drops++;
1351 /* Flush the already enqueued tx requests */
1352 if (flush && txo->pend_wrb_cnt)
1353 be_xmit_flush(adapter, txo);
1354
1355 return NETDEV_TX_OK;
1356 }
1357
1358 static int be_change_mtu(struct net_device *netdev, int new_mtu)
1359 {
1360 struct be_adapter *adapter = netdev_priv(netdev);
1361 struct device *dev = &adapter->pdev->dev;
1362
1363 if (new_mtu < BE_MIN_MTU || new_mtu > BE_MAX_MTU) {
1364 dev_info(dev, "MTU must be between %d and %d bytes\n",
1365 BE_MIN_MTU, BE_MAX_MTU);
1366 return -EINVAL;
1367 }
1368
1369 dev_info(dev, "MTU changed from %d to %d bytes\n",
1370 netdev->mtu, new_mtu);
1371 netdev->mtu = new_mtu;
1372 return 0;
1373 }
1374
1375 static inline bool be_in_all_promisc(struct be_adapter *adapter)
1376 {
1377 return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
1378 BE_IF_FLAGS_ALL_PROMISCUOUS;
1379 }
1380
1381 static int be_set_vlan_promisc(struct be_adapter *adapter)
1382 {
1383 struct device *dev = &adapter->pdev->dev;
1384 int status;
1385
1386 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)
1387 return 0;
1388
1389 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);
1390 if (!status) {
1391 dev_info(dev, "Enabled VLAN promiscuous mode\n");
1392 adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;
1393 } else {
1394 dev_err(dev, "Failed to enable VLAN promiscuous mode\n");
1395 }
1396 return status;
1397 }
1398
1399 static int be_clear_vlan_promisc(struct be_adapter *adapter)
1400 {
1401 struct device *dev = &adapter->pdev->dev;
1402 int status;
1403
1404 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);
1405 if (!status) {
1406 dev_info(dev, "Disabling VLAN promiscuous mode\n");
1407 adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
1408 }
1409 return status;
1410 }
1411
1412 /*
1413 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1414 * If the user configures more, place BE in vlan promiscuous mode.
1415 */
1416 static int be_vid_config(struct be_adapter *adapter)
1417 {
1418 struct device *dev = &adapter->pdev->dev;
1419 u16 vids[BE_NUM_VLANS_SUPPORTED];
1420 u16 num = 0, i = 0;
1421 int status = 0;
1422
1423 /* No need to further configure vids if in promiscuous mode */
1424 if (be_in_all_promisc(adapter))
1425 return 0;
1426
1427 if (adapter->vlans_added > be_max_vlans(adapter))
1428 return be_set_vlan_promisc(adapter);
1429
1430 /* Construct VLAN Table to give to HW */
1431 for_each_set_bit(i, adapter->vids, VLAN_N_VID)
1432 vids[num++] = cpu_to_le16(i);
1433
1434 status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);
1435 if (status) {
1436 dev_err(dev, "Setting HW VLAN filtering failed\n");
1437 /* Set to VLAN promisc mode as setting VLAN filter failed */
1438 if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||
1439 addl_status(status) ==
1440 MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)
1441 return be_set_vlan_promisc(adapter);
1442 } else if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
1443 status = be_clear_vlan_promisc(adapter);
1444 }
1445 return status;
1446 }
1447
1448 static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1449 {
1450 struct be_adapter *adapter = netdev_priv(netdev);
1451 int status = 0;
1452
1453 /* Packets with VID 0 are always received by Lancer by default */
1454 if (lancer_chip(adapter) && vid == 0)
1455 return status;
1456
1457 if (test_bit(vid, adapter->vids))
1458 return status;
1459
1460 set_bit(vid, adapter->vids);
1461 adapter->vlans_added++;
1462
1463 status = be_vid_config(adapter);
1464 if (status) {
1465 adapter->vlans_added--;
1466 clear_bit(vid, adapter->vids);
1467 }
1468
1469 return status;
1470 }
1471
1472 static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1473 {
1474 struct be_adapter *adapter = netdev_priv(netdev);
1475
1476 /* Packets with VID 0 are always received by Lancer by default */
1477 if (lancer_chip(adapter) && vid == 0)
1478 return 0;
1479
1480 if (!test_bit(vid, adapter->vids))
1481 return 0;
1482
1483 clear_bit(vid, adapter->vids);
1484 adapter->vlans_added--;
1485
1486 return be_vid_config(adapter);
1487 }
1488
1489 static void be_clear_all_promisc(struct be_adapter *adapter)
1490 {
1491 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, OFF);
1492 adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS;
1493 }
1494
1495 static void be_set_all_promisc(struct be_adapter *adapter)
1496 {
1497 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);
1498 adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;
1499 }
1500
1501 static void be_set_mc_promisc(struct be_adapter *adapter)
1502 {
1503 int status;
1504
1505 if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)
1506 return;
1507
1508 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);
1509 if (!status)
1510 adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;
1511 }
1512
1513 static void be_set_mc_list(struct be_adapter *adapter)
1514 {
1515 int status;
1516
1517 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);
1518 if (!status)
1519 adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;
1520 else
1521 be_set_mc_promisc(adapter);
1522 }
1523
1524 static void be_set_uc_list(struct be_adapter *adapter)
1525 {
1526 struct netdev_hw_addr *ha;
1527 int i = 1; /* First slot is claimed by the Primary MAC */
1528
1529 for (; adapter->uc_macs > 0; adapter->uc_macs--, i++)
1530 be_cmd_pmac_del(adapter, adapter->if_handle,
1531 adapter->pmac_id[i], 0);
1532
1533 if (netdev_uc_count(adapter->netdev) > be_max_uc(adapter)) {
1534 be_set_all_promisc(adapter);
1535 return;
1536 }
1537
1538 netdev_for_each_uc_addr(ha, adapter->netdev) {
1539 adapter->uc_macs++; /* First slot is for Primary MAC */
1540 be_cmd_pmac_add(adapter, (u8 *)ha->addr, adapter->if_handle,
1541 &adapter->pmac_id[adapter->uc_macs], 0);
1542 }
1543 }
1544
1545 static void be_clear_uc_list(struct be_adapter *adapter)
1546 {
1547 int i;
1548
1549 for (i = 1; i < (adapter->uc_macs + 1); i++)
1550 be_cmd_pmac_del(adapter, adapter->if_handle,
1551 adapter->pmac_id[i], 0);
1552 adapter->uc_macs = 0;
1553 }
1554
1555 static void be_set_rx_mode(struct net_device *netdev)
1556 {
1557 struct be_adapter *adapter = netdev_priv(netdev);
1558
1559 if (netdev->flags & IFF_PROMISC) {
1560 be_set_all_promisc(adapter);
1561 return;
1562 }
1563
1564 /* Interface was previously in promiscuous mode; disable it */
1565 if (be_in_all_promisc(adapter)) {
1566 be_clear_all_promisc(adapter);
1567 if (adapter->vlans_added)
1568 be_vid_config(adapter);
1569 }
1570
1571 /* Enable multicast promisc if num configured exceeds what we support */
1572 if (netdev->flags & IFF_ALLMULTI ||
1573 netdev_mc_count(netdev) > be_max_mc(adapter)) {
1574 be_set_mc_promisc(adapter);
1575 return;
1576 }
1577
1578 if (netdev_uc_count(netdev) != adapter->uc_macs)
1579 be_set_uc_list(adapter);
1580
1581 be_set_mc_list(adapter);
1582 }
1583
1584 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1585 {
1586 struct be_adapter *adapter = netdev_priv(netdev);
1587 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1588 int status;
1589
1590 if (!sriov_enabled(adapter))
1591 return -EPERM;
1592
1593 if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1594 return -EINVAL;
1595
1596 /* Proceed further only if user provided MAC is different
1597 * from active MAC
1598 */
1599 if (ether_addr_equal(mac, vf_cfg->mac_addr))
1600 return 0;
1601
1602 if (BEx_chip(adapter)) {
1603 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1604 vf + 1);
1605
1606 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1607 &vf_cfg->pmac_id, vf + 1);
1608 } else {
1609 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1610 vf + 1);
1611 }
1612
1613 if (status) {
1614 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",
1615 mac, vf, status);
1616 return be_cmd_status(status);
1617 }
1618
1619 ether_addr_copy(vf_cfg->mac_addr, mac);
1620
1621 return 0;
1622 }
1623
1624 static int be_get_vf_config(struct net_device *netdev, int vf,
1625 struct ifla_vf_info *vi)
1626 {
1627 struct be_adapter *adapter = netdev_priv(netdev);
1628 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1629
1630 if (!sriov_enabled(adapter))
1631 return -EPERM;
1632
1633 if (vf >= adapter->num_vfs)
1634 return -EINVAL;
1635
1636 vi->vf = vf;
1637 vi->max_tx_rate = vf_cfg->tx_rate;
1638 vi->min_tx_rate = 0;
1639 vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1640 vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1641 memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1642 vi->linkstate = adapter->vf_cfg[vf].plink_tracking;
1643 vi->spoofchk = adapter->vf_cfg[vf].spoofchk;
1644
1645 return 0;
1646 }
1647
1648 static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)
1649 {
1650 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1651 u16 vids[BE_NUM_VLANS_SUPPORTED];
1652 int vf_if_id = vf_cfg->if_handle;
1653 int status;
1654
1655 /* Enable Transparent VLAN Tagging */
1656 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);
1657 if (status)
1658 return status;
1659
1660 /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */
1661 vids[0] = 0;
1662 status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);
1663 if (!status)
1664 dev_info(&adapter->pdev->dev,
1665 "Cleared guest VLANs on VF%d", vf);
1666
1667 /* After TVT is enabled, disallow VFs to program VLAN filters */
1668 if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {
1669 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &
1670 ~BE_PRIV_FILTMGMT, vf + 1);
1671 if (!status)
1672 vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;
1673 }
1674 return 0;
1675 }
1676
1677 static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)
1678 {
1679 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1680 struct device *dev = &adapter->pdev->dev;
1681 int status;
1682
1683 /* Reset Transparent VLAN Tagging. */
1684 status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,
1685 vf_cfg->if_handle, 0, 0);
1686 if (status)
1687 return status;
1688
1689 /* Allow VFs to program VLAN filtering */
1690 if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
1691 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |
1692 BE_PRIV_FILTMGMT, vf + 1);
1693 if (!status) {
1694 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
1695 dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);
1696 }
1697 }
1698
1699 dev_info(dev,
1700 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");
1701 return 0;
1702 }
1703
1704 static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos)
1705 {
1706 struct be_adapter *adapter = netdev_priv(netdev);
1707 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1708 int status;
1709
1710 if (!sriov_enabled(adapter))
1711 return -EPERM;
1712
1713 if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1714 return -EINVAL;
1715
1716 if (vlan || qos) {
1717 vlan |= qos << VLAN_PRIO_SHIFT;
1718 status = be_set_vf_tvt(adapter, vf, vlan);
1719 } else {
1720 status = be_clear_vf_tvt(adapter, vf);
1721 }
1722
1723 if (status) {
1724 dev_err(&adapter->pdev->dev,
1725 "VLAN %d config on VF %d failed : %#x\n", vlan, vf,
1726 status);
1727 return be_cmd_status(status);
1728 }
1729
1730 vf_cfg->vlan_tag = vlan;
1731 return 0;
1732 }
1733
1734 static int be_set_vf_tx_rate(struct net_device *netdev, int vf,
1735 int min_tx_rate, int max_tx_rate)
1736 {
1737 struct be_adapter *adapter = netdev_priv(netdev);
1738 struct device *dev = &adapter->pdev->dev;
1739 int percent_rate, status = 0;
1740 u16 link_speed = 0;
1741 u8 link_status;
1742
1743 if (!sriov_enabled(adapter))
1744 return -EPERM;
1745
1746 if (vf >= adapter->num_vfs)
1747 return -EINVAL;
1748
1749 if (min_tx_rate)
1750 return -EINVAL;
1751
1752 if (!max_tx_rate)
1753 goto config_qos;
1754
1755 status = be_cmd_link_status_query(adapter, &link_speed,
1756 &link_status, 0);
1757 if (status)
1758 goto err;
1759
1760 if (!link_status) {
1761 dev_err(dev, "TX-rate setting not allowed when link is down\n");
1762 status = -ENETDOWN;
1763 goto err;
1764 }
1765
1766 if (max_tx_rate < 100 || max_tx_rate > link_speed) {
1767 dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",
1768 link_speed);
1769 status = -EINVAL;
1770 goto err;
1771 }
1772
1773 /* On Skyhawk the QOS setting must be done only as a % value */
1774 percent_rate = link_speed / 100;
1775 if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {
1776 dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",
1777 percent_rate);
1778 status = -EINVAL;
1779 goto err;
1780 }
1781
1782 config_qos:
1783 status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);
1784 if (status)
1785 goto err;
1786
1787 adapter->vf_cfg[vf].tx_rate = max_tx_rate;
1788 return 0;
1789
1790 err:
1791 dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",
1792 max_tx_rate, vf);
1793 return be_cmd_status(status);
1794 }
1795
1796 static int be_set_vf_link_state(struct net_device *netdev, int vf,
1797 int link_state)
1798 {
1799 struct be_adapter *adapter = netdev_priv(netdev);
1800 int status;
1801
1802 if (!sriov_enabled(adapter))
1803 return -EPERM;
1804
1805 if (vf >= adapter->num_vfs)
1806 return -EINVAL;
1807
1808 status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);
1809 if (status) {
1810 dev_err(&adapter->pdev->dev,
1811 "Link state change on VF %d failed: %#x\n", vf, status);
1812 return be_cmd_status(status);
1813 }
1814
1815 adapter->vf_cfg[vf].plink_tracking = link_state;
1816
1817 return 0;
1818 }
1819
1820 static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
1821 {
1822 struct be_adapter *adapter = netdev_priv(netdev);
1823 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1824 u8 spoofchk;
1825 int status;
1826
1827 if (!sriov_enabled(adapter))
1828 return -EPERM;
1829
1830 if (vf >= adapter->num_vfs)
1831 return -EINVAL;
1832
1833 if (BEx_chip(adapter))
1834 return -EOPNOTSUPP;
1835
1836 if (enable == vf_cfg->spoofchk)
1837 return 0;
1838
1839 spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;
1840
1841 status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,
1842 0, spoofchk);
1843 if (status) {
1844 dev_err(&adapter->pdev->dev,
1845 "Spoofchk change on VF %d failed: %#x\n", vf, status);
1846 return be_cmd_status(status);
1847 }
1848
1849 vf_cfg->spoofchk = enable;
1850 return 0;
1851 }
1852
1853 static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
1854 ulong now)
1855 {
1856 aic->rx_pkts_prev = rx_pkts;
1857 aic->tx_reqs_prev = tx_pkts;
1858 aic->jiffies = now;
1859 }
1860
1861 static int be_get_new_eqd(struct be_eq_obj *eqo)
1862 {
1863 struct be_adapter *adapter = eqo->adapter;
1864 int eqd, start;
1865 struct be_aic_obj *aic;
1866 struct be_rx_obj *rxo;
1867 struct be_tx_obj *txo;
1868 u64 rx_pkts = 0, tx_pkts = 0;
1869 ulong now;
1870 u32 pps, delta;
1871 int i;
1872
1873 aic = &adapter->aic_obj[eqo->idx];
1874 if (!aic->enable) {
1875 if (aic->jiffies)
1876 aic->jiffies = 0;
1877 eqd = aic->et_eqd;
1878 return eqd;
1879 }
1880
1881 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
1882 do {
1883 start = u64_stats_fetch_begin_irq(&rxo->stats.sync);
1884 rx_pkts += rxo->stats.rx_pkts;
1885 } while (u64_stats_fetch_retry_irq(&rxo->stats.sync, start));
1886 }
1887
1888 for_all_tx_queues_on_eq(adapter, eqo, txo, i) {
1889 do {
1890 start = u64_stats_fetch_begin_irq(&txo->stats.sync);
1891 tx_pkts += txo->stats.tx_reqs;
1892 } while (u64_stats_fetch_retry_irq(&txo->stats.sync, start));
1893 }
1894
1895 /* Skip, if wrapped around or first calculation */
1896 now = jiffies;
1897 if (!aic->jiffies || time_before(now, aic->jiffies) ||
1898 rx_pkts < aic->rx_pkts_prev ||
1899 tx_pkts < aic->tx_reqs_prev) {
1900 be_aic_update(aic, rx_pkts, tx_pkts, now);
1901 return aic->prev_eqd;
1902 }
1903
1904 delta = jiffies_to_msecs(now - aic->jiffies);
1905 if (delta == 0)
1906 return aic->prev_eqd;
1907
1908 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
1909 (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
1910 eqd = (pps / 15000) << 2;
1911
1912 if (eqd < 8)
1913 eqd = 0;
1914 eqd = min_t(u32, eqd, aic->max_eqd);
1915 eqd = max_t(u32, eqd, aic->min_eqd);
1916
1917 be_aic_update(aic, rx_pkts, tx_pkts, now);
1918
1919 return eqd;
1920 }
1921
1922 /* For Skyhawk-R only */
1923 static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)
1924 {
1925 struct be_adapter *adapter = eqo->adapter;
1926 struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];
1927 ulong now = jiffies;
1928 int eqd;
1929 u32 mult_enc;
1930
1931 if (!aic->enable)
1932 return 0;
1933
1934 if (jiffies_to_msecs(now - aic->jiffies) < 1)
1935 eqd = aic->prev_eqd;
1936 else
1937 eqd = be_get_new_eqd(eqo);
1938
1939 if (eqd > 100)
1940 mult_enc = R2I_DLY_ENC_1;
1941 else if (eqd > 60)
1942 mult_enc = R2I_DLY_ENC_2;
1943 else if (eqd > 20)
1944 mult_enc = R2I_DLY_ENC_3;
1945 else
1946 mult_enc = R2I_DLY_ENC_0;
1947
1948 aic->prev_eqd = eqd;
1949
1950 return mult_enc;
1951 }
1952
1953 void be_eqd_update(struct be_adapter *adapter, bool force_update)
1954 {
1955 struct be_set_eqd set_eqd[MAX_EVT_QS];
1956 struct be_aic_obj *aic;
1957 struct be_eq_obj *eqo;
1958 int i, num = 0, eqd;
1959
1960 for_all_evt_queues(adapter, eqo, i) {
1961 aic = &adapter->aic_obj[eqo->idx];
1962 eqd = be_get_new_eqd(eqo);
1963 if (force_update || eqd != aic->prev_eqd) {
1964 set_eqd[num].delay_multiplier = (eqd * 65)/100;
1965 set_eqd[num].eq_id = eqo->q.id;
1966 aic->prev_eqd = eqd;
1967 num++;
1968 }
1969 }
1970
1971 if (num)
1972 be_cmd_modify_eqd(adapter, set_eqd, num);
1973 }
1974
1975 static void be_rx_stats_update(struct be_rx_obj *rxo,
1976 struct be_rx_compl_info *rxcp)
1977 {
1978 struct be_rx_stats *stats = rx_stats(rxo);
1979
1980 u64_stats_update_begin(&stats->sync);
1981 stats->rx_compl++;
1982 stats->rx_bytes += rxcp->pkt_size;
1983 stats->rx_pkts++;
1984 if (rxcp->tunneled)
1985 stats->rx_vxlan_offload_pkts++;
1986 if (rxcp->pkt_type == BE_MULTICAST_PACKET)
1987 stats->rx_mcast_pkts++;
1988 if (rxcp->err)
1989 stats->rx_compl_err++;
1990 u64_stats_update_end(&stats->sync);
1991 }
1992
1993 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
1994 {
1995 /* L4 checksum is not reliable for non TCP/UDP packets.
1996 * Also ignore ipcksm for ipv6 pkts
1997 */
1998 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
1999 (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
2000 }
2001
2002 static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
2003 {
2004 struct be_adapter *adapter = rxo->adapter;
2005 struct be_rx_page_info *rx_page_info;
2006 struct be_queue_info *rxq = &rxo->q;
2007 u32 frag_idx = rxq->tail;
2008
2009 rx_page_info = &rxo->page_info_tbl[frag_idx];
2010 BUG_ON(!rx_page_info->page);
2011
2012 if (rx_page_info->last_frag) {
2013 dma_unmap_page(&adapter->pdev->dev,
2014 dma_unmap_addr(rx_page_info, bus),
2015 adapter->big_page_size, DMA_FROM_DEVICE);
2016 rx_page_info->last_frag = false;
2017 } else {
2018 dma_sync_single_for_cpu(&adapter->pdev->dev,
2019 dma_unmap_addr(rx_page_info, bus),
2020 rx_frag_size, DMA_FROM_DEVICE);
2021 }
2022
2023 queue_tail_inc(rxq);
2024 atomic_dec(&rxq->used);
2025 return rx_page_info;
2026 }
2027
2028 /* Throwaway the data in the Rx completion */
2029 static void be_rx_compl_discard(struct be_rx_obj *rxo,
2030 struct be_rx_compl_info *rxcp)
2031 {
2032 struct be_rx_page_info *page_info;
2033 u16 i, num_rcvd = rxcp->num_rcvd;
2034
2035 for (i = 0; i < num_rcvd; i++) {
2036 page_info = get_rx_page_info(rxo);
2037 put_page(page_info->page);
2038 memset(page_info, 0, sizeof(*page_info));
2039 }
2040 }
2041
2042 /*
2043 * skb_fill_rx_data forms a complete skb for an ether frame
2044 * indicated by rxcp.
2045 */
2046 static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
2047 struct be_rx_compl_info *rxcp)
2048 {
2049 struct be_rx_page_info *page_info;
2050 u16 i, j;
2051 u16 hdr_len, curr_frag_len, remaining;
2052 u8 *start;
2053
2054 page_info = get_rx_page_info(rxo);
2055 start = page_address(page_info->page) + page_info->page_offset;
2056 prefetch(start);
2057
2058 /* Copy data in the first descriptor of this completion */
2059 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
2060
2061 skb->len = curr_frag_len;
2062 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
2063 memcpy(skb->data, start, curr_frag_len);
2064 /* Complete packet has now been moved to data */
2065 put_page(page_info->page);
2066 skb->data_len = 0;
2067 skb->tail += curr_frag_len;
2068 } else {
2069 hdr_len = ETH_HLEN;
2070 memcpy(skb->data, start, hdr_len);
2071 skb_shinfo(skb)->nr_frags = 1;
2072 skb_frag_set_page(skb, 0, page_info->page);
2073 skb_shinfo(skb)->frags[0].page_offset =
2074 page_info->page_offset + hdr_len;
2075 skb_frag_size_set(&skb_shinfo(skb)->frags[0],
2076 curr_frag_len - hdr_len);
2077 skb->data_len = curr_frag_len - hdr_len;
2078 skb->truesize += rx_frag_size;
2079 skb->tail += hdr_len;
2080 }
2081 page_info->page = NULL;
2082
2083 if (rxcp->pkt_size <= rx_frag_size) {
2084 BUG_ON(rxcp->num_rcvd != 1);
2085 return;
2086 }
2087
2088 /* More frags present for this completion */
2089 remaining = rxcp->pkt_size - curr_frag_len;
2090 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
2091 page_info = get_rx_page_info(rxo);
2092 curr_frag_len = min(remaining, rx_frag_size);
2093
2094 /* Coalesce all frags from the same physical page in one slot */
2095 if (page_info->page_offset == 0) {
2096 /* Fresh page */
2097 j++;
2098 skb_frag_set_page(skb, j, page_info->page);
2099 skb_shinfo(skb)->frags[j].page_offset =
2100 page_info->page_offset;
2101 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2102 skb_shinfo(skb)->nr_frags++;
2103 } else {
2104 put_page(page_info->page);
2105 }
2106
2107 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2108 skb->len += curr_frag_len;
2109 skb->data_len += curr_frag_len;
2110 skb->truesize += rx_frag_size;
2111 remaining -= curr_frag_len;
2112 page_info->page = NULL;
2113 }
2114 BUG_ON(j > MAX_SKB_FRAGS);
2115 }
2116
2117 /* Process the RX completion indicated by rxcp when GRO is disabled */
2118 static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
2119 struct be_rx_compl_info *rxcp)
2120 {
2121 struct be_adapter *adapter = rxo->adapter;
2122 struct net_device *netdev = adapter->netdev;
2123 struct sk_buff *skb;
2124
2125 skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
2126 if (unlikely(!skb)) {
2127 rx_stats(rxo)->rx_drops_no_skbs++;
2128 be_rx_compl_discard(rxo, rxcp);
2129 return;
2130 }
2131
2132 skb_fill_rx_data(rxo, skb, rxcp);
2133
2134 if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
2135 skb->ip_summed = CHECKSUM_UNNECESSARY;
2136 else
2137 skb_checksum_none_assert(skb);
2138
2139 skb->protocol = eth_type_trans(skb, netdev);
2140 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2141 if (netdev->features & NETIF_F_RXHASH)
2142 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2143
2144 skb->csum_level = rxcp->tunneled;
2145 skb_mark_napi_id(skb, napi);
2146
2147 if (rxcp->vlanf)
2148 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2149
2150 netif_receive_skb(skb);
2151 }
2152
2153 /* Process the RX completion indicated by rxcp when GRO is enabled */
2154 static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
2155 struct napi_struct *napi,
2156 struct be_rx_compl_info *rxcp)
2157 {
2158 struct be_adapter *adapter = rxo->adapter;
2159 struct be_rx_page_info *page_info;
2160 struct sk_buff *skb = NULL;
2161 u16 remaining, curr_frag_len;
2162 u16 i, j;
2163
2164 skb = napi_get_frags(napi);
2165 if (!skb) {
2166 be_rx_compl_discard(rxo, rxcp);
2167 return;
2168 }
2169
2170 remaining = rxcp->pkt_size;
2171 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
2172 page_info = get_rx_page_info(rxo);
2173
2174 curr_frag_len = min(remaining, rx_frag_size);
2175
2176 /* Coalesce all frags from the same physical page in one slot */
2177 if (i == 0 || page_info->page_offset == 0) {
2178 /* First frag or Fresh page */
2179 j++;
2180 skb_frag_set_page(skb, j, page_info->page);
2181 skb_shinfo(skb)->frags[j].page_offset =
2182 page_info->page_offset;
2183 skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2184 } else {
2185 put_page(page_info->page);
2186 }
2187 skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2188 skb->truesize += rx_frag_size;
2189 remaining -= curr_frag_len;
2190 memset(page_info, 0, sizeof(*page_info));
2191 }
2192 BUG_ON(j > MAX_SKB_FRAGS);
2193
2194 skb_shinfo(skb)->nr_frags = j + 1;
2195 skb->len = rxcp->pkt_size;
2196 skb->data_len = rxcp->pkt_size;
2197 skb->ip_summed = CHECKSUM_UNNECESSARY;
2198 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2199 if (adapter->netdev->features & NETIF_F_RXHASH)
2200 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2201
2202 skb->csum_level = rxcp->tunneled;
2203
2204 if (rxcp->vlanf)
2205 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2206
2207 napi_gro_frags(napi);
2208 }
2209
2210 static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
2211 struct be_rx_compl_info *rxcp)
2212 {
2213 rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);
2214 rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);
2215 rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);
2216 rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);
2217 rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);
2218 rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);
2219 rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);
2220 rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);
2221 rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);
2222 rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);
2223 rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);
2224 if (rxcp->vlanf) {
2225 rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);
2226 rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);
2227 }
2228 rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);
2229 rxcp->tunneled =
2230 GET_RX_COMPL_V1_BITS(tunneled, compl);
2231 }
2232
2233 static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
2234 struct be_rx_compl_info *rxcp)
2235 {
2236 rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);
2237 rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);
2238 rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);
2239 rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);
2240 rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);
2241 rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);
2242 rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);
2243 rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);
2244 rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);
2245 rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);
2246 rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);
2247 if (rxcp->vlanf) {
2248 rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);
2249 rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);
2250 }
2251 rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);
2252 rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);
2253 }
2254
2255 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
2256 {
2257 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
2258 struct be_rx_compl_info *rxcp = &rxo->rxcp;
2259 struct be_adapter *adapter = rxo->adapter;
2260
2261 /* For checking the valid bit it is Ok to use either definition as the
2262 * valid bit is at the same position in both v0 and v1 Rx compl */
2263 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
2264 return NULL;
2265
2266 rmb();
2267 be_dws_le_to_cpu(compl, sizeof(*compl));
2268
2269 if (adapter->be3_native)
2270 be_parse_rx_compl_v1(compl, rxcp);
2271 else
2272 be_parse_rx_compl_v0(compl, rxcp);
2273
2274 if (rxcp->ip_frag)
2275 rxcp->l4_csum = 0;
2276
2277 if (rxcp->vlanf) {
2278 /* In QNQ modes, if qnq bit is not set, then the packet was
2279 * tagged only with the transparent outer vlan-tag and must
2280 * not be treated as a vlan packet by host
2281 */
2282 if (be_is_qnq_mode(adapter) && !rxcp->qnq)
2283 rxcp->vlanf = 0;
2284
2285 if (!lancer_chip(adapter))
2286 rxcp->vlan_tag = swab16(rxcp->vlan_tag);
2287
2288 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
2289 !test_bit(rxcp->vlan_tag, adapter->vids))
2290 rxcp->vlanf = 0;
2291 }
2292
2293 /* As the compl has been parsed, reset it; we wont touch it again */
2294 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
2295
2296 queue_tail_inc(&rxo->cq);
2297 return rxcp;
2298 }
2299
2300 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
2301 {
2302 u32 order = get_order(size);
2303
2304 if (order > 0)
2305 gfp |= __GFP_COMP;
2306 return alloc_pages(gfp, order);
2307 }
2308
2309 /*
2310 * Allocate a page, split it to fragments of size rx_frag_size and post as
2311 * receive buffers to BE
2312 */
2313 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
2314 {
2315 struct be_adapter *adapter = rxo->adapter;
2316 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
2317 struct be_queue_info *rxq = &rxo->q;
2318 struct page *pagep = NULL;
2319 struct device *dev = &adapter->pdev->dev;
2320 struct be_eth_rx_d *rxd;
2321 u64 page_dmaaddr = 0, frag_dmaaddr;
2322 u32 posted, page_offset = 0, notify = 0;
2323
2324 page_info = &rxo->page_info_tbl[rxq->head];
2325 for (posted = 0; posted < frags_needed && !page_info->page; posted++) {
2326 if (!pagep) {
2327 pagep = be_alloc_pages(adapter->big_page_size, gfp);
2328 if (unlikely(!pagep)) {
2329 rx_stats(rxo)->rx_post_fail++;
2330 break;
2331 }
2332 page_dmaaddr = dma_map_page(dev, pagep, 0,
2333 adapter->big_page_size,
2334 DMA_FROM_DEVICE);
2335 if (dma_mapping_error(dev, page_dmaaddr)) {
2336 put_page(pagep);
2337 pagep = NULL;
2338 adapter->drv_stats.dma_map_errors++;
2339 break;
2340 }
2341 page_offset = 0;
2342 } else {
2343 get_page(pagep);
2344 page_offset += rx_frag_size;
2345 }
2346 page_info->page_offset = page_offset;
2347 page_info->page = pagep;
2348
2349 rxd = queue_head_node(rxq);
2350 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
2351 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
2352 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
2353
2354 /* Any space left in the current big page for another frag? */
2355 if ((page_offset + rx_frag_size + rx_frag_size) >
2356 adapter->big_page_size) {
2357 pagep = NULL;
2358 page_info->last_frag = true;
2359 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
2360 } else {
2361 dma_unmap_addr_set(page_info, bus, frag_dmaaddr);
2362 }
2363
2364 prev_page_info = page_info;
2365 queue_head_inc(rxq);
2366 page_info = &rxo->page_info_tbl[rxq->head];
2367 }
2368
2369 /* Mark the last frag of a page when we break out of the above loop
2370 * with no more slots available in the RXQ
2371 */
2372 if (pagep) {
2373 prev_page_info->last_frag = true;
2374 dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);
2375 }
2376
2377 if (posted) {
2378 atomic_add(posted, &rxq->used);
2379 if (rxo->rx_post_starved)
2380 rxo->rx_post_starved = false;
2381 do {
2382 notify = min(MAX_NUM_POST_ERX_DB, posted);
2383 be_rxq_notify(adapter, rxq->id, notify);
2384 posted -= notify;
2385 } while (posted);
2386 } else if (atomic_read(&rxq->used) == 0) {
2387 /* Let be_worker replenish when memory is available */
2388 rxo->rx_post_starved = true;
2389 }
2390 }
2391
2392 static struct be_tx_compl_info *be_tx_compl_get(struct be_tx_obj *txo)
2393 {
2394 struct be_queue_info *tx_cq = &txo->cq;
2395 struct be_tx_compl_info *txcp = &txo->txcp;
2396 struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);
2397
2398 if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
2399 return NULL;
2400
2401 /* Ensure load ordering of valid bit dword and other dwords below */
2402 rmb();
2403 be_dws_le_to_cpu(compl, sizeof(*compl));
2404
2405 txcp->status = GET_TX_COMPL_BITS(status, compl);
2406 txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);
2407
2408 compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
2409 queue_tail_inc(tx_cq);
2410 return txcp;
2411 }
2412
2413 static u16 be_tx_compl_process(struct be_adapter *adapter,
2414 struct be_tx_obj *txo, u16 last_index)
2415 {
2416 struct sk_buff **sent_skbs = txo->sent_skb_list;
2417 struct be_queue_info *txq = &txo->q;
2418 struct sk_buff *skb = NULL;
2419 bool unmap_skb_hdr = false;
2420 struct be_eth_wrb *wrb;
2421 u16 num_wrbs = 0;
2422 u32 frag_index;
2423
2424 do {
2425 if (sent_skbs[txq->tail]) {
2426 /* Free skb from prev req */
2427 if (skb)
2428 dev_consume_skb_any(skb);
2429 skb = sent_skbs[txq->tail];
2430 sent_skbs[txq->tail] = NULL;
2431 queue_tail_inc(txq); /* skip hdr wrb */
2432 num_wrbs++;
2433 unmap_skb_hdr = true;
2434 }
2435 wrb = queue_tail_node(txq);
2436 frag_index = txq->tail;
2437 unmap_tx_frag(&adapter->pdev->dev, wrb,
2438 (unmap_skb_hdr && skb_headlen(skb)));
2439 unmap_skb_hdr = false;
2440 queue_tail_inc(txq);
2441 num_wrbs++;
2442 } while (frag_index != last_index);
2443 dev_consume_skb_any(skb);
2444
2445 return num_wrbs;
2446 }
2447
2448 /* Return the number of events in the event queue */
2449 static inline int events_get(struct be_eq_obj *eqo)
2450 {
2451 struct be_eq_entry *eqe;
2452 int num = 0;
2453
2454 do {
2455 eqe = queue_tail_node(&eqo->q);
2456 if (eqe->evt == 0)
2457 break;
2458
2459 rmb();
2460 eqe->evt = 0;
2461 num++;
2462 queue_tail_inc(&eqo->q);
2463 } while (true);
2464
2465 return num;
2466 }
2467
2468 /* Leaves the EQ is disarmed state */
2469 static void be_eq_clean(struct be_eq_obj *eqo)
2470 {
2471 int num = events_get(eqo);
2472
2473 be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
2474 }
2475
2476 /* Free posted rx buffers that were not used */
2477 static void be_rxq_clean(struct be_rx_obj *rxo)
2478 {
2479 struct be_queue_info *rxq = &rxo->q;
2480 struct be_rx_page_info *page_info;
2481
2482 while (atomic_read(&rxq->used) > 0) {
2483 page_info = get_rx_page_info(rxo);
2484 put_page(page_info->page);
2485 memset(page_info, 0, sizeof(*page_info));
2486 }
2487 BUG_ON(atomic_read(&rxq->used));
2488 rxq->tail = 0;
2489 rxq->head = 0;
2490 }
2491
2492 static void be_rx_cq_clean(struct be_rx_obj *rxo)
2493 {
2494 struct be_queue_info *rx_cq = &rxo->cq;
2495 struct be_rx_compl_info *rxcp;
2496 struct be_adapter *adapter = rxo->adapter;
2497 int flush_wait = 0;
2498
2499 /* Consume pending rx completions.
2500 * Wait for the flush completion (identified by zero num_rcvd)
2501 * to arrive. Notify CQ even when there are no more CQ entries
2502 * for HW to flush partially coalesced CQ entries.
2503 * In Lancer, there is no need to wait for flush compl.
2504 */
2505 for (;;) {
2506 rxcp = be_rx_compl_get(rxo);
2507 if (!rxcp) {
2508 if (lancer_chip(adapter))
2509 break;
2510
2511 if (flush_wait++ > 50 ||
2512 be_check_error(adapter,
2513 BE_ERROR_HW)) {
2514 dev_warn(&adapter->pdev->dev,
2515 "did not receive flush compl\n");
2516 break;
2517 }
2518 be_cq_notify(adapter, rx_cq->id, true, 0);
2519 mdelay(1);
2520 } else {
2521 be_rx_compl_discard(rxo, rxcp);
2522 be_cq_notify(adapter, rx_cq->id, false, 1);
2523 if (rxcp->num_rcvd == 0)
2524 break;
2525 }
2526 }
2527
2528 /* After cleanup, leave the CQ in unarmed state */
2529 be_cq_notify(adapter, rx_cq->id, false, 0);
2530 }
2531
2532 static void be_tx_compl_clean(struct be_adapter *adapter)
2533 {
2534 struct device *dev = &adapter->pdev->dev;
2535 u16 cmpl = 0, timeo = 0, num_wrbs = 0;
2536 struct be_tx_compl_info *txcp;
2537 struct be_queue_info *txq;
2538 u32 end_idx, notified_idx;
2539 struct be_tx_obj *txo;
2540 int i, pending_txqs;
2541
2542 /* Stop polling for compls when HW has been silent for 10ms */
2543 do {
2544 pending_txqs = adapter->num_tx_qs;
2545
2546 for_all_tx_queues(adapter, txo, i) {
2547 cmpl = 0;
2548 num_wrbs = 0;
2549 txq = &txo->q;
2550 while ((txcp = be_tx_compl_get(txo))) {
2551 num_wrbs +=
2552 be_tx_compl_process(adapter, txo,
2553 txcp->end_index);
2554 cmpl++;
2555 }
2556 if (cmpl) {
2557 be_cq_notify(adapter, txo->cq.id, false, cmpl);
2558 atomic_sub(num_wrbs, &txq->used);
2559 timeo = 0;
2560 }
2561 if (!be_is_tx_compl_pending(txo))
2562 pending_txqs--;
2563 }
2564
2565 if (pending_txqs == 0 || ++timeo > 10 ||
2566 be_check_error(adapter, BE_ERROR_HW))
2567 break;
2568
2569 mdelay(1);
2570 } while (true);
2571
2572 /* Free enqueued TX that was never notified to HW */
2573 for_all_tx_queues(adapter, txo, i) {
2574 txq = &txo->q;
2575
2576 if (atomic_read(&txq->used)) {
2577 dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",
2578 i, atomic_read(&txq->used));
2579 notified_idx = txq->tail;
2580 end_idx = txq->tail;
2581 index_adv(&end_idx, atomic_read(&txq->used) - 1,
2582 txq->len);
2583 /* Use the tx-compl process logic to handle requests
2584 * that were not sent to the HW.
2585 */
2586 num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2587 atomic_sub(num_wrbs, &txq->used);
2588 BUG_ON(atomic_read(&txq->used));
2589 txo->pend_wrb_cnt = 0;
2590 /* Since hw was never notified of these requests,
2591 * reset TXQ indices
2592 */
2593 txq->head = notified_idx;
2594 txq->tail = notified_idx;
2595 }
2596 }
2597 }
2598
2599 static void be_evt_queues_destroy(struct be_adapter *adapter)
2600 {
2601 struct be_eq_obj *eqo;
2602 int i;
2603
2604 for_all_evt_queues(adapter, eqo, i) {
2605 if (eqo->q.created) {
2606 be_eq_clean(eqo);
2607 be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2608 napi_hash_del(&eqo->napi);
2609 netif_napi_del(&eqo->napi);
2610 free_cpumask_var(eqo->affinity_mask);
2611 }
2612 be_queue_free(adapter, &eqo->q);
2613 }
2614 }
2615
2616 static int be_evt_queues_create(struct be_adapter *adapter)
2617 {
2618 struct be_queue_info *eq;
2619 struct be_eq_obj *eqo;
2620 struct be_aic_obj *aic;
2621 int i, rc;
2622
2623 /* need enough EQs to service both RX and TX queues */
2624 adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2625 max(adapter->cfg_num_rx_irqs,
2626 adapter->cfg_num_tx_irqs));
2627
2628 for_all_evt_queues(adapter, eqo, i) {
2629 int numa_node = dev_to_node(&adapter->pdev->dev);
2630
2631 aic = &adapter->aic_obj[i];
2632 eqo->adapter = adapter;
2633 eqo->idx = i;
2634 aic->max_eqd = BE_MAX_EQD;
2635 aic->enable = true;
2636
2637 eq = &eqo->q;
2638 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2639 sizeof(struct be_eq_entry));
2640 if (rc)
2641 return rc;
2642
2643 rc = be_cmd_eq_create(adapter, eqo);
2644 if (rc)
2645 return rc;
2646
2647 if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
2648 return -ENOMEM;
2649 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
2650 eqo->affinity_mask);
2651 netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
2652 BE_NAPI_WEIGHT);
2653 }
2654 return 0;
2655 }
2656
2657 static void be_mcc_queues_destroy(struct be_adapter *adapter)
2658 {
2659 struct be_queue_info *q;
2660
2661 q = &adapter->mcc_obj.q;
2662 if (q->created)
2663 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
2664 be_queue_free(adapter, q);
2665
2666 q = &adapter->mcc_obj.cq;
2667 if (q->created)
2668 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2669 be_queue_free(adapter, q);
2670 }
2671
2672 /* Must be called only after TX qs are created as MCC shares TX EQ */
2673 static int be_mcc_queues_create(struct be_adapter *adapter)
2674 {
2675 struct be_queue_info *q, *cq;
2676
2677 cq = &adapter->mcc_obj.cq;
2678 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
2679 sizeof(struct be_mcc_compl)))
2680 goto err;
2681
2682 /* Use the default EQ for MCC completions */
2683 if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
2684 goto mcc_cq_free;
2685
2686 q = &adapter->mcc_obj.q;
2687 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
2688 goto mcc_cq_destroy;
2689
2690 if (be_cmd_mccq_create(adapter, q, cq))
2691 goto mcc_q_free;
2692
2693 return 0;
2694
2695 mcc_q_free:
2696 be_queue_free(adapter, q);
2697 mcc_cq_destroy:
2698 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
2699 mcc_cq_free:
2700 be_queue_free(adapter, cq);
2701 err:
2702 return -1;
2703 }
2704
2705 static void be_tx_queues_destroy(struct be_adapter *adapter)
2706 {
2707 struct be_queue_info *q;
2708 struct be_tx_obj *txo;
2709 u8 i;
2710
2711 for_all_tx_queues(adapter, txo, i) {
2712 q = &txo->q;
2713 if (q->created)
2714 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
2715 be_queue_free(adapter, q);
2716
2717 q = &txo->cq;
2718 if (q->created)
2719 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2720 be_queue_free(adapter, q);
2721 }
2722 }
2723
2724 static int be_tx_qs_create(struct be_adapter *adapter)
2725 {
2726 struct be_queue_info *cq;
2727 struct be_tx_obj *txo;
2728 struct be_eq_obj *eqo;
2729 int status, i;
2730
2731 adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs);
2732
2733 for_all_tx_queues(adapter, txo, i) {
2734 cq = &txo->cq;
2735 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
2736 sizeof(struct be_eth_tx_compl));
2737 if (status)
2738 return status;
2739
2740 u64_stats_init(&txo->stats.sync);
2741 u64_stats_init(&txo->stats.sync_compl);
2742
2743 /* If num_evt_qs is less than num_tx_qs, then more than
2744 * one txq share an eq
2745 */
2746 eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
2747 status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
2748 if (status)
2749 return status;
2750
2751 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
2752 sizeof(struct be_eth_wrb));
2753 if (status)
2754 return status;
2755
2756 status = be_cmd_txq_create(adapter, txo);
2757 if (status)
2758 return status;
2759
2760 netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
2761 eqo->idx);
2762 }
2763
2764 dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
2765 adapter->num_tx_qs);
2766 return 0;
2767 }
2768
2769 static void be_rx_cqs_destroy(struct be_adapter *adapter)
2770 {
2771 struct be_queue_info *q;
2772 struct be_rx_obj *rxo;
2773 int i;
2774
2775 for_all_rx_queues(adapter, rxo, i) {
2776 q = &rxo->cq;
2777 if (q->created)
2778 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
2779 be_queue_free(adapter, q);
2780 }
2781 }
2782
2783 static int be_rx_cqs_create(struct be_adapter *adapter)
2784 {
2785 struct be_queue_info *eq, *cq;
2786 struct be_rx_obj *rxo;
2787 int rc, i;
2788
2789 adapter->num_rss_qs =
2790 min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs);
2791
2792 /* We'll use RSS only if atleast 2 RSS rings are supported. */
2793 if (adapter->num_rss_qs < 2)
2794 adapter->num_rss_qs = 0;
2795
2796 adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;
2797
2798 /* When the interface is not capable of RSS rings (and there is no
2799 * need to create a default RXQ) we'll still need one RXQ
2800 */
2801 if (adapter->num_rx_qs == 0)
2802 adapter->num_rx_qs = 1;
2803
2804 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
2805 for_all_rx_queues(adapter, rxo, i) {
2806 rxo->adapter = adapter;
2807 cq = &rxo->cq;
2808 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
2809 sizeof(struct be_eth_rx_compl));
2810 if (rc)
2811 return rc;
2812
2813 u64_stats_init(&rxo->stats.sync);
2814 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
2815 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
2816 if (rc)
2817 return rc;
2818 }
2819
2820 dev_info(&adapter->pdev->dev,
2821 "created %d RX queue(s)\n", adapter->num_rx_qs);
2822 return 0;
2823 }
2824
2825 static irqreturn_t be_intx(int irq, void *dev)
2826 {
2827 struct be_eq_obj *eqo = dev;
2828 struct be_adapter *adapter = eqo->adapter;
2829 int num_evts = 0;
2830
2831 /* IRQ is not expected when NAPI is scheduled as the EQ
2832 * will not be armed.
2833 * But, this can happen on Lancer INTx where it takes
2834 * a while to de-assert INTx or in BE2 where occasionaly
2835 * an interrupt may be raised even when EQ is unarmed.
2836 * If NAPI is already scheduled, then counting & notifying
2837 * events will orphan them.
2838 */
2839 if (napi_schedule_prep(&eqo->napi)) {
2840 num_evts = events_get(eqo);
2841 __napi_schedule(&eqo->napi);
2842 if (num_evts)
2843 eqo->spurious_intr = 0;
2844 }
2845 be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);
2846
2847 /* Return IRQ_HANDLED only for the the first spurious intr
2848 * after a valid intr to stop the kernel from branding
2849 * this irq as a bad one!
2850 */
2851 if (num_evts || eqo->spurious_intr++ == 0)
2852 return IRQ_HANDLED;
2853 else
2854 return IRQ_NONE;
2855 }
2856
2857 static irqreturn_t be_msix(int irq, void *dev)
2858 {
2859 struct be_eq_obj *eqo = dev;
2860
2861 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
2862 napi_schedule(&eqo->napi);
2863 return IRQ_HANDLED;
2864 }
2865
2866 static inline bool do_gro(struct be_rx_compl_info *rxcp)
2867 {
2868 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
2869 }
2870
2871 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
2872 int budget, int polling)
2873 {
2874 struct be_adapter *adapter = rxo->adapter;
2875 struct be_queue_info *rx_cq = &rxo->cq;
2876 struct be_rx_compl_info *rxcp;
2877 u32 work_done;
2878 u32 frags_consumed = 0;
2879
2880 for (work_done = 0; work_done < budget; work_done++) {
2881 rxcp = be_rx_compl_get(rxo);
2882 if (!rxcp)
2883 break;
2884
2885 /* Is it a flush compl that has no data */
2886 if (unlikely(rxcp->num_rcvd == 0))
2887 goto loop_continue;
2888
2889 /* Discard compl with partial DMA Lancer B0 */
2890 if (unlikely(!rxcp->pkt_size)) {
2891 be_rx_compl_discard(rxo, rxcp);
2892 goto loop_continue;
2893 }
2894
2895 /* On BE drop pkts that arrive due to imperfect filtering in
2896 * promiscuous mode on some skews
2897 */
2898 if (unlikely(rxcp->port != adapter->port_num &&
2899 !lancer_chip(adapter))) {
2900 be_rx_compl_discard(rxo, rxcp);
2901 goto loop_continue;
2902 }
2903
2904 /* Don't do gro when we're busy_polling */
2905 if (do_gro(rxcp) && polling != BUSY_POLLING)
2906 be_rx_compl_process_gro(rxo, napi, rxcp);
2907 else
2908 be_rx_compl_process(rxo, napi, rxcp);
2909
2910 loop_continue:
2911 frags_consumed += rxcp->num_rcvd;
2912 be_rx_stats_update(rxo, rxcp);
2913 }
2914
2915 if (work_done) {
2916 be_cq_notify(adapter, rx_cq->id, true, work_done);
2917
2918 /* When an rx-obj gets into post_starved state, just
2919 * let be_worker do the posting.
2920 */
2921 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
2922 !rxo->rx_post_starved)
2923 be_post_rx_frags(rxo, GFP_ATOMIC,
2924 max_t(u32, MAX_RX_POST,
2925 frags_consumed));
2926 }
2927
2928 return work_done;
2929 }
2930
2931 static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)
2932 {
2933 switch (status) {
2934 case BE_TX_COMP_HDR_PARSE_ERR:
2935 tx_stats(txo)->tx_hdr_parse_err++;
2936 break;
2937 case BE_TX_COMP_NDMA_ERR:
2938 tx_stats(txo)->tx_dma_err++;
2939 break;
2940 case BE_TX_COMP_ACL_ERR:
2941 tx_stats(txo)->tx_spoof_check_err++;
2942 break;
2943 }
2944 }
2945
2946 static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)
2947 {
2948 switch (status) {
2949 case LANCER_TX_COMP_LSO_ERR:
2950 tx_stats(txo)->tx_tso_err++;
2951 break;
2952 case LANCER_TX_COMP_HSW_DROP_MAC_ERR:
2953 case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:
2954 tx_stats(txo)->tx_spoof_check_err++;
2955 break;
2956 case LANCER_TX_COMP_QINQ_ERR:
2957 tx_stats(txo)->tx_qinq_err++;
2958 break;
2959 case LANCER_TX_COMP_PARITY_ERR:
2960 tx_stats(txo)->tx_internal_parity_err++;
2961 break;
2962 case LANCER_TX_COMP_DMA_ERR:
2963 tx_stats(txo)->tx_dma_err++;
2964 break;
2965 }
2966 }
2967
2968 static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
2969 int idx)
2970 {
2971 int num_wrbs = 0, work_done = 0;
2972 struct be_tx_compl_info *txcp;
2973
2974 while ((txcp = be_tx_compl_get(txo))) {
2975 num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);
2976 work_done++;
2977
2978 if (txcp->status) {
2979 if (lancer_chip(adapter))
2980 lancer_update_tx_err(txo, txcp->status);
2981 else
2982 be_update_tx_err(txo, txcp->status);
2983 }
2984 }
2985
2986 if (work_done) {
2987 be_cq_notify(adapter, txo->cq.id, true, work_done);
2988 atomic_sub(num_wrbs, &txo->q.used);
2989
2990 /* As Tx wrbs have been freed up, wake up netdev queue
2991 * if it was stopped due to lack of tx wrbs. */
2992 if (__netif_subqueue_stopped(adapter->netdev, idx) &&
2993 be_can_txq_wake(txo)) {
2994 netif_wake_subqueue(adapter->netdev, idx);
2995 }
2996
2997 u64_stats_update_begin(&tx_stats(txo)->sync_compl);
2998 tx_stats(txo)->tx_compl += work_done;
2999 u64_stats_update_end(&tx_stats(txo)->sync_compl);
3000 }
3001 }
3002
3003 #ifdef CONFIG_NET_RX_BUSY_POLL
3004 static inline bool be_lock_napi(struct be_eq_obj *eqo)
3005 {
3006 bool status = true;
3007
3008 spin_lock(&eqo->lock); /* BH is already disabled */
3009 if (eqo->state & BE_EQ_LOCKED) {
3010 WARN_ON(eqo->state & BE_EQ_NAPI);
3011 eqo->state |= BE_EQ_NAPI_YIELD;
3012 status = false;
3013 } else {
3014 eqo->state = BE_EQ_NAPI;
3015 }
3016 spin_unlock(&eqo->lock);
3017 return status;
3018 }
3019
3020 static inline void be_unlock_napi(struct be_eq_obj *eqo)
3021 {
3022 spin_lock(&eqo->lock); /* BH is already disabled */
3023
3024 WARN_ON(eqo->state & (BE_EQ_POLL | BE_EQ_NAPI_YIELD));
3025 eqo->state = BE_EQ_IDLE;
3026
3027 spin_unlock(&eqo->lock);
3028 }
3029
3030 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
3031 {
3032 bool status = true;
3033
3034 spin_lock_bh(&eqo->lock);
3035 if (eqo->state & BE_EQ_LOCKED) {
3036 eqo->state |= BE_EQ_POLL_YIELD;
3037 status = false;
3038 } else {
3039 eqo->state |= BE_EQ_POLL;
3040 }
3041 spin_unlock_bh(&eqo->lock);
3042 return status;
3043 }
3044
3045 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
3046 {
3047 spin_lock_bh(&eqo->lock);
3048
3049 WARN_ON(eqo->state & (BE_EQ_NAPI));
3050 eqo->state = BE_EQ_IDLE;
3051
3052 spin_unlock_bh(&eqo->lock);
3053 }
3054
3055 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
3056 {
3057 spin_lock_init(&eqo->lock);
3058 eqo->state = BE_EQ_IDLE;
3059 }
3060
3061 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
3062 {
3063 local_bh_disable();
3064
3065 /* It's enough to just acquire napi lock on the eqo to stop
3066 * be_busy_poll() from processing any queueus.
3067 */
3068 while (!be_lock_napi(eqo))
3069 mdelay(1);
3070
3071 local_bh_enable();
3072 }
3073
3074 #else /* CONFIG_NET_RX_BUSY_POLL */
3075
3076 static inline bool be_lock_napi(struct be_eq_obj *eqo)
3077 {
3078 return true;
3079 }
3080
3081 static inline void be_unlock_napi(struct be_eq_obj *eqo)
3082 {
3083 }
3084
3085 static inline bool be_lock_busy_poll(struct be_eq_obj *eqo)
3086 {
3087 return false;
3088 }
3089
3090 static inline void be_unlock_busy_poll(struct be_eq_obj *eqo)
3091 {
3092 }
3093
3094 static inline void be_enable_busy_poll(struct be_eq_obj *eqo)
3095 {
3096 }
3097
3098 static inline void be_disable_busy_poll(struct be_eq_obj *eqo)
3099 {
3100 }
3101 #endif /* CONFIG_NET_RX_BUSY_POLL */
3102
3103 int be_poll(struct napi_struct *napi, int budget)
3104 {
3105 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3106 struct be_adapter *adapter = eqo->adapter;
3107 int max_work = 0, work, i, num_evts;
3108 struct be_rx_obj *rxo;
3109 struct be_tx_obj *txo;
3110 u32 mult_enc = 0;
3111
3112 num_evts = events_get(eqo);
3113
3114 for_all_tx_queues_on_eq(adapter, eqo, txo, i)
3115 be_process_tx(adapter, txo, i);
3116
3117 if (be_lock_napi(eqo)) {
3118 /* This loop will iterate twice for EQ0 in which
3119 * completions of the last RXQ (default one) are also processed
3120 * For other EQs the loop iterates only once
3121 */
3122 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3123 work = be_process_rx(rxo, napi, budget, NAPI_POLLING);
3124 max_work = max(work, max_work);
3125 }
3126 be_unlock_napi(eqo);
3127 } else {
3128 max_work = budget;
3129 }
3130
3131 if (is_mcc_eqo(eqo))
3132 be_process_mcc(adapter);
3133
3134 if (max_work < budget) {
3135 napi_complete(napi);
3136
3137 /* Skyhawk EQ_DB has a provision to set the rearm to interrupt
3138 * delay via a delay multiplier encoding value
3139 */
3140 if (skyhawk_chip(adapter))
3141 mult_enc = be_get_eq_delay_mult_enc(eqo);
3142
3143 be_eq_notify(adapter, eqo->q.id, true, false, num_evts,
3144 mult_enc);
3145 } else {
3146 /* As we'll continue in polling mode, count and clear events */
3147 be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);
3148 }
3149 return max_work;
3150 }
3151
3152 #ifdef CONFIG_NET_RX_BUSY_POLL
3153 static int be_busy_poll(struct napi_struct *napi)
3154 {
3155 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3156 struct be_adapter *adapter = eqo->adapter;
3157 struct be_rx_obj *rxo;
3158 int i, work = 0;
3159
3160 if (!be_lock_busy_poll(eqo))
3161 return LL_FLUSH_BUSY;
3162
3163 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3164 work = be_process_rx(rxo, napi, 4, BUSY_POLLING);
3165 if (work)
3166 break;
3167 }
3168
3169 be_unlock_busy_poll(eqo);
3170 return work;
3171 }
3172 #endif
3173
3174 void be_detect_error(struct be_adapter *adapter)
3175 {
3176 u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
3177 u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
3178 u32 i;
3179 struct device *dev = &adapter->pdev->dev;
3180
3181 if (be_check_error(adapter, BE_ERROR_HW))
3182 return;
3183
3184 if (lancer_chip(adapter)) {
3185 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
3186 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
3187 be_set_error(adapter, BE_ERROR_UE);
3188 sliport_err1 = ioread32(adapter->db +
3189 SLIPORT_ERROR1_OFFSET);
3190 sliport_err2 = ioread32(adapter->db +
3191 SLIPORT_ERROR2_OFFSET);
3192 /* Do not log error messages if its a FW reset */
3193 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
3194 sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
3195 dev_info(dev, "Firmware update in progress\n");
3196 } else {
3197 dev_err(dev, "Error detected in the card\n");
3198 dev_err(dev, "ERR: sliport status 0x%x\n",
3199 sliport_status);
3200 dev_err(dev, "ERR: sliport error1 0x%x\n",
3201 sliport_err1);
3202 dev_err(dev, "ERR: sliport error2 0x%x\n",
3203 sliport_err2);
3204 }
3205 }
3206 } else {
3207 ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);
3208 ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);
3209 ue_lo_mask = ioread32(adapter->pcicfg +
3210 PCICFG_UE_STATUS_LOW_MASK);
3211 ue_hi_mask = ioread32(adapter->pcicfg +
3212 PCICFG_UE_STATUS_HI_MASK);
3213
3214 ue_lo = (ue_lo & ~ue_lo_mask);
3215 ue_hi = (ue_hi & ~ue_hi_mask);
3216
3217 /* On certain platforms BE hardware can indicate spurious UEs.
3218 * Allow HW to stop working completely in case of a real UE.
3219 * Hence not setting the hw_error for UE detection.
3220 */
3221
3222 if (ue_lo || ue_hi) {
3223 dev_err(dev,
3224 "Unrecoverable Error detected in the adapter");
3225 dev_err(dev, "Please reboot server to recover");
3226 if (skyhawk_chip(adapter))
3227 be_set_error(adapter, BE_ERROR_UE);
3228
3229 for (i = 0; ue_lo; ue_lo >>= 1, i++) {
3230 if (ue_lo & 1)
3231 dev_err(dev, "UE: %s bit set\n",
3232 ue_status_low_desc[i]);
3233 }
3234 for (i = 0; ue_hi; ue_hi >>= 1, i++) {
3235 if (ue_hi & 1)
3236 dev_err(dev, "UE: %s bit set\n",
3237 ue_status_hi_desc[i]);
3238 }
3239 }
3240 }
3241 }
3242
3243 static void be_msix_disable(struct be_adapter *adapter)
3244 {
3245 if (msix_enabled(adapter)) {
3246 pci_disable_msix(adapter->pdev);
3247 adapter->num_msix_vec = 0;
3248 adapter->num_msix_roce_vec = 0;
3249 }
3250 }
3251
3252 static int be_msix_enable(struct be_adapter *adapter)
3253 {
3254 unsigned int i, max_roce_eqs;
3255 struct device *dev = &adapter->pdev->dev;
3256 int num_vec;
3257
3258 /* If RoCE is supported, program the max number of vectors that
3259 * could be used for NIC and RoCE, else, just program the number
3260 * we'll use initially.
3261 */
3262 if (be_roce_supported(adapter)) {
3263 max_roce_eqs =
3264 be_max_func_eqs(adapter) - be_max_nic_eqs(adapter);
3265 max_roce_eqs = min(max_roce_eqs, num_online_cpus());
3266 num_vec = be_max_any_irqs(adapter) + max_roce_eqs;
3267 } else {
3268 num_vec = max(adapter->cfg_num_rx_irqs,
3269 adapter->cfg_num_tx_irqs);
3270 }
3271
3272 for (i = 0; i < num_vec; i++)
3273 adapter->msix_entries[i].entry = i;
3274
3275 num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
3276 MIN_MSIX_VECTORS, num_vec);
3277 if (num_vec < 0)
3278 goto fail;
3279
3280 if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
3281 adapter->num_msix_roce_vec = num_vec / 2;
3282 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
3283 adapter->num_msix_roce_vec);
3284 }
3285
3286 adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
3287
3288 dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
3289 adapter->num_msix_vec);
3290 return 0;
3291
3292 fail:
3293 dev_warn(dev, "MSIx enable failed\n");
3294
3295 /* INTx is not supported in VFs, so fail probe if enable_msix fails */
3296 if (be_virtfn(adapter))
3297 return num_vec;
3298 return 0;
3299 }
3300
3301 static inline int be_msix_vec_get(struct be_adapter *adapter,
3302 struct be_eq_obj *eqo)
3303 {
3304 return adapter->msix_entries[eqo->msix_idx].vector;
3305 }
3306
3307 static int be_msix_register(struct be_adapter *adapter)
3308 {
3309 struct net_device *netdev = adapter->netdev;
3310 struct be_eq_obj *eqo;
3311 int status, i, vec;
3312
3313 for_all_evt_queues(adapter, eqo, i) {
3314 sprintf(eqo->desc, "%s-q%d", netdev->name, i);
3315 vec = be_msix_vec_get(adapter, eqo);
3316 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
3317 if (status)
3318 goto err_msix;
3319
3320 irq_set_affinity_hint(vec, eqo->affinity_mask);
3321 }
3322
3323 return 0;
3324 err_msix:
3325 for (i--; i >= 0; i--) {
3326 eqo = &adapter->eq_obj[i];
3327 free_irq(be_msix_vec_get(adapter, eqo), eqo);
3328 }
3329 dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
3330 status);
3331 be_msix_disable(adapter);
3332 return status;
3333 }
3334
3335 static int be_irq_register(struct be_adapter *adapter)
3336 {
3337 struct net_device *netdev = adapter->netdev;
3338 int status;
3339
3340 if (msix_enabled(adapter)) {
3341 status = be_msix_register(adapter);
3342 if (status == 0)
3343 goto done;
3344 /* INTx is not supported for VF */
3345 if (be_virtfn(adapter))
3346 return status;
3347 }
3348
3349 /* INTx: only the first EQ is used */
3350 netdev->irq = adapter->pdev->irq;
3351 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
3352 &adapter->eq_obj[0]);
3353 if (status) {
3354 dev_err(&adapter->pdev->dev,
3355 "INTx request IRQ failed - err %d\n", status);
3356 return status;
3357 }
3358 done:
3359 adapter->isr_registered = true;
3360 return 0;
3361 }
3362
3363 static void be_irq_unregister(struct be_adapter *adapter)
3364 {
3365 struct net_device *netdev = adapter->netdev;
3366 struct be_eq_obj *eqo;
3367 int i, vec;
3368
3369 if (!adapter->isr_registered)
3370 return;
3371
3372 /* INTx */
3373 if (!msix_enabled(adapter)) {
3374 free_irq(netdev->irq, &adapter->eq_obj[0]);
3375 goto done;
3376 }
3377
3378 /* MSIx */
3379 for_all_evt_queues(adapter, eqo, i) {
3380 vec = be_msix_vec_get(adapter, eqo);
3381 irq_set_affinity_hint(vec, NULL);
3382 free_irq(vec, eqo);
3383 }
3384
3385 done:
3386 adapter->isr_registered = false;
3387 }
3388
3389 static void be_rx_qs_destroy(struct be_adapter *adapter)
3390 {
3391 struct rss_info *rss = &adapter->rss_info;
3392 struct be_queue_info *q;
3393 struct be_rx_obj *rxo;
3394 int i;
3395
3396 for_all_rx_queues(adapter, rxo, i) {
3397 q = &rxo->q;
3398 if (q->created) {
3399 /* If RXQs are destroyed while in an "out of buffer"
3400 * state, there is a possibility of an HW stall on
3401 * Lancer. So, post 64 buffers to each queue to relieve
3402 * the "out of buffer" condition.
3403 * Make sure there's space in the RXQ before posting.
3404 */
3405 if (lancer_chip(adapter)) {
3406 be_rx_cq_clean(rxo);
3407 if (atomic_read(&q->used) == 0)
3408 be_post_rx_frags(rxo, GFP_KERNEL,
3409 MAX_RX_POST);
3410 }
3411
3412 be_cmd_rxq_destroy(adapter, q);
3413 be_rx_cq_clean(rxo);
3414 be_rxq_clean(rxo);
3415 }
3416 be_queue_free(adapter, q);
3417 }
3418
3419 if (rss->rss_flags) {
3420 rss->rss_flags = RSS_ENABLE_NONE;
3421 be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3422 128, rss->rss_hkey);
3423 }
3424 }
3425
3426 static void be_disable_if_filters(struct be_adapter *adapter)
3427 {
3428 be_cmd_pmac_del(adapter, adapter->if_handle,
3429 adapter->pmac_id[0], 0);
3430
3431 be_clear_uc_list(adapter);
3432
3433 /* The IFACE flags are enabled in the open path and cleared
3434 * in the close path. When a VF gets detached from the host and
3435 * assigned to a VM the following happens:
3436 * - VF's IFACE flags get cleared in the detach path
3437 * - IFACE create is issued by the VF in the attach path
3438 * Due to a bug in the BE3/Skyhawk-R FW
3439 * (Lancer FW doesn't have the bug), the IFACE capability flags
3440 * specified along with the IFACE create cmd issued by a VF are not
3441 * honoured by FW. As a consequence, if a *new* driver
3442 * (that enables/disables IFACE flags in open/close)
3443 * is loaded in the host and an *old* driver is * used by a VM/VF,
3444 * the IFACE gets created *without* the needed flags.
3445 * To avoid this, disable RX-filter flags only for Lancer.
3446 */
3447 if (lancer_chip(adapter)) {
3448 be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
3449 adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
3450 }
3451 }
3452
3453 static int be_close(struct net_device *netdev)
3454 {
3455 struct be_adapter *adapter = netdev_priv(netdev);
3456 struct be_eq_obj *eqo;
3457 int i;
3458
3459 /* This protection is needed as be_close() may be called even when the
3460 * adapter is in cleared state (after eeh perm failure)
3461 */
3462 if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
3463 return 0;
3464
3465 be_disable_if_filters(adapter);
3466
3467 if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
3468 for_all_evt_queues(adapter, eqo, i) {
3469 napi_disable(&eqo->napi);
3470 be_disable_busy_poll(eqo);
3471 }
3472 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
3473 }
3474
3475 be_async_mcc_disable(adapter);
3476
3477 /* Wait for all pending tx completions to arrive so that
3478 * all tx skbs are freed.
3479 */
3480 netif_tx_disable(netdev);
3481 be_tx_compl_clean(adapter);
3482
3483 be_rx_qs_destroy(adapter);
3484
3485 for_all_evt_queues(adapter, eqo, i) {
3486 if (msix_enabled(adapter))
3487 synchronize_irq(be_msix_vec_get(adapter, eqo));
3488 else
3489 synchronize_irq(netdev->irq);
3490 be_eq_clean(eqo);
3491 }
3492
3493 be_irq_unregister(adapter);
3494
3495 return 0;
3496 }
3497
3498 static int be_rx_qs_create(struct be_adapter *adapter)
3499 {
3500 struct rss_info *rss = &adapter->rss_info;
3501 u8 rss_key[RSS_HASH_KEY_LEN];
3502 struct be_rx_obj *rxo;
3503 int rc, i, j;
3504
3505 for_all_rx_queues(adapter, rxo, i) {
3506 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
3507 sizeof(struct be_eth_rx_d));
3508 if (rc)
3509 return rc;
3510 }
3511
3512 if (adapter->need_def_rxq || !adapter->num_rss_qs) {
3513 rxo = default_rxo(adapter);
3514 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3515 rx_frag_size, adapter->if_handle,
3516 false, &rxo->rss_id);
3517 if (rc)
3518 return rc;
3519 }
3520
3521 for_all_rss_queues(adapter, rxo, i) {
3522 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3523 rx_frag_size, adapter->if_handle,
3524 true, &rxo->rss_id);
3525 if (rc)
3526 return rc;
3527 }
3528
3529 if (be_multi_rxq(adapter)) {
3530 for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {
3531 for_all_rss_queues(adapter, rxo, i) {
3532 if ((j + i) >= RSS_INDIR_TABLE_LEN)
3533 break;
3534 rss->rsstable[j + i] = rxo->rss_id;
3535 rss->rss_queue[j + i] = i;
3536 }
3537 }
3538 rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
3539 RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
3540
3541 if (!BEx_chip(adapter))
3542 rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |
3543 RSS_ENABLE_UDP_IPV6;
3544
3545 netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
3546 rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3547 RSS_INDIR_TABLE_LEN, rss_key);
3548 if (rc) {
3549 rss->rss_flags = RSS_ENABLE_NONE;
3550 return rc;
3551 }
3552
3553 memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
3554 } else {
3555 /* Disable RSS, if only default RX Q is created */
3556 rss->rss_flags = RSS_ENABLE_NONE;
3557 }
3558
3559
3560 /* Post 1 less than RXQ-len to avoid head being equal to tail,
3561 * which is a queue empty condition
3562 */
3563 for_all_rx_queues(adapter, rxo, i)
3564 be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);
3565
3566 return 0;
3567 }
3568
3569 static int be_enable_if_filters(struct be_adapter *adapter)
3570 {
3571 int status;
3572
3573 status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);
3574 if (status)
3575 return status;
3576
3577 /* For BE3 VFs, the PF programs the initial MAC address */
3578 if (!(BEx_chip(adapter) && be_virtfn(adapter))) {
3579 status = be_cmd_pmac_add(adapter, adapter->netdev->dev_addr,
3580 adapter->if_handle,
3581 &adapter->pmac_id[0], 0);
3582 if (status)
3583 return status;
3584 }
3585
3586 if (adapter->vlans_added)
3587 be_vid_config(adapter);
3588
3589 be_set_rx_mode(adapter->netdev);
3590
3591 return 0;
3592 }
3593
3594 static int be_open(struct net_device *netdev)
3595 {
3596 struct be_adapter *adapter = netdev_priv(netdev);
3597 struct be_eq_obj *eqo;
3598 struct be_rx_obj *rxo;
3599 struct be_tx_obj *txo;
3600 u8 link_status;
3601 int status, i;
3602
3603 status = be_rx_qs_create(adapter);
3604 if (status)
3605 goto err;
3606
3607 status = be_enable_if_filters(adapter);
3608 if (status)
3609 goto err;
3610
3611 status = be_irq_register(adapter);
3612 if (status)
3613 goto err;
3614
3615 for_all_rx_queues(adapter, rxo, i)
3616 be_cq_notify(adapter, rxo->cq.id, true, 0);
3617
3618 for_all_tx_queues(adapter, txo, i)
3619 be_cq_notify(adapter, txo->cq.id, true, 0);
3620
3621 be_async_mcc_enable(adapter);
3622
3623 for_all_evt_queues(adapter, eqo, i) {
3624 napi_enable(&eqo->napi);
3625 be_enable_busy_poll(eqo);
3626 be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);
3627 }
3628 adapter->flags |= BE_FLAGS_NAPI_ENABLED;
3629
3630 status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
3631 if (!status)
3632 be_link_status_update(adapter, link_status);
3633
3634 netif_tx_start_all_queues(netdev);
3635 if (skyhawk_chip(adapter))
3636 udp_tunnel_get_rx_info(netdev);
3637
3638 return 0;
3639 err:
3640 be_close(adapter->netdev);
3641 return -EIO;
3642 }
3643
3644 static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
3645 {
3646 u32 addr;
3647
3648 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
3649
3650 mac[5] = (u8)(addr & 0xFF);
3651 mac[4] = (u8)((addr >> 8) & 0xFF);
3652 mac[3] = (u8)((addr >> 16) & 0xFF);
3653 /* Use the OUI from the current MAC address */
3654 memcpy(mac, adapter->netdev->dev_addr, 3);
3655 }
3656
3657 /*
3658 * Generate a seed MAC address from the PF MAC Address using jhash.
3659 * MAC Address for VFs are assigned incrementally starting from the seed.
3660 * These addresses are programmed in the ASIC by the PF and the VF driver
3661 * queries for the MAC address during its probe.
3662 */
3663 static int be_vf_eth_addr_config(struct be_adapter *adapter)
3664 {
3665 u32 vf;
3666 int status = 0;
3667 u8 mac[ETH_ALEN];
3668 struct be_vf_cfg *vf_cfg;
3669
3670 be_vf_eth_addr_generate(adapter, mac);
3671
3672 for_all_vfs(adapter, vf_cfg, vf) {
3673 if (BEx_chip(adapter))
3674 status = be_cmd_pmac_add(adapter, mac,
3675 vf_cfg->if_handle,
3676 &vf_cfg->pmac_id, vf + 1);
3677 else
3678 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
3679 vf + 1);
3680
3681 if (status)
3682 dev_err(&adapter->pdev->dev,
3683 "Mac address assignment failed for VF %d\n",
3684 vf);
3685 else
3686 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3687
3688 mac[5] += 1;
3689 }
3690 return status;
3691 }
3692
3693 static int be_vfs_mac_query(struct be_adapter *adapter)
3694 {
3695 int status, vf;
3696 u8 mac[ETH_ALEN];
3697 struct be_vf_cfg *vf_cfg;
3698
3699 for_all_vfs(adapter, vf_cfg, vf) {
3700 status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,
3701 mac, vf_cfg->if_handle,
3702 false, vf+1);
3703 if (status)
3704 return status;
3705 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3706 }
3707 return 0;
3708 }
3709
3710 static void be_vf_clear(struct be_adapter *adapter)
3711 {
3712 struct be_vf_cfg *vf_cfg;
3713 u32 vf;
3714
3715 if (pci_vfs_assigned(adapter->pdev)) {
3716 dev_warn(&adapter->pdev->dev,
3717 "VFs are assigned to VMs: not disabling VFs\n");
3718 goto done;
3719 }
3720
3721 pci_disable_sriov(adapter->pdev);
3722
3723 for_all_vfs(adapter, vf_cfg, vf) {
3724 if (BEx_chip(adapter))
3725 be_cmd_pmac_del(adapter, vf_cfg->if_handle,
3726 vf_cfg->pmac_id, vf + 1);
3727 else
3728 be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
3729 vf + 1);
3730
3731 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
3732 }
3733
3734 if (BE3_chip(adapter))
3735 be_cmd_set_hsw_config(adapter, 0, 0,
3736 adapter->if_handle,
3737 PORT_FWD_TYPE_PASSTHRU, 0);
3738 done:
3739 kfree(adapter->vf_cfg);
3740 adapter->num_vfs = 0;
3741 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3742 }
3743
3744 static void be_clear_queues(struct be_adapter *adapter)
3745 {
3746 be_mcc_queues_destroy(adapter);
3747 be_rx_cqs_destroy(adapter);
3748 be_tx_queues_destroy(adapter);
3749 be_evt_queues_destroy(adapter);
3750 }
3751
3752 static void be_cancel_worker(struct be_adapter *adapter)
3753 {
3754 if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
3755 cancel_delayed_work_sync(&adapter->work);
3756 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
3757 }
3758 }
3759
3760 static void be_cancel_err_detection(struct be_adapter *adapter)
3761 {
3762 if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {
3763 cancel_delayed_work_sync(&adapter->be_err_detection_work);
3764 adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;
3765 }
3766 }
3767
3768 static void be_disable_vxlan_offloads(struct be_adapter *adapter)
3769 {
3770 struct net_device *netdev = adapter->netdev;
3771
3772 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
3773 be_cmd_manage_iface(adapter, adapter->if_handle,
3774 OP_CONVERT_TUNNEL_TO_NORMAL);
3775
3776 if (adapter->vxlan_port)
3777 be_cmd_set_vxlan_port(adapter, 0);
3778
3779 adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
3780 adapter->vxlan_port = 0;
3781
3782 netdev->hw_enc_features = 0;
3783 netdev->hw_features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3784 netdev->features &= ~(NETIF_F_GSO_UDP_TUNNEL);
3785 }
3786
3787 static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,
3788 struct be_resources *vft_res)
3789 {
3790 struct be_resources res = adapter->pool_res;
3791 u32 vf_if_cap_flags = res.vf_if_cap_flags;
3792 struct be_resources res_mod = {0};
3793 u16 num_vf_qs = 1;
3794
3795 /* Distribute the queue resources among the PF and it's VFs */
3796 if (num_vfs) {
3797 /* Divide the rx queues evenly among the VFs and the PF, capped
3798 * at VF-EQ-count. Any remainder queues belong to the PF.
3799 */
3800 num_vf_qs = min(SH_VF_MAX_NIC_EQS,
3801 res.max_rss_qs / (num_vfs + 1));
3802
3803 /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES
3804 * RSS Tables per port. Provide RSS on VFs, only if number of
3805 * VFs requested is less than it's PF Pool's RSS Tables limit.
3806 */
3807 if (num_vfs >= be_max_pf_pool_rss_tables(adapter))
3808 num_vf_qs = 1;
3809 }
3810
3811 /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,
3812 * which are modifiable using SET_PROFILE_CONFIG cmd.
3813 */
3814 be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,
3815 RESOURCE_MODIFIABLE, 0);
3816
3817 /* If RSS IFACE capability flags are modifiable for a VF, set the
3818 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if
3819 * more than 1 RSSQ is available for a VF.
3820 * Otherwise, provision only 1 queue pair for VF.
3821 */
3822 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {
3823 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
3824 if (num_vf_qs > 1) {
3825 vf_if_cap_flags |= BE_IF_FLAGS_RSS;
3826 if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)
3827 vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;
3828 } else {
3829 vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |
3830 BE_IF_FLAGS_DEFQ_RSS);
3831 }
3832 } else {
3833 num_vf_qs = 1;
3834 }
3835
3836 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
3837 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
3838 vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
3839 }
3840
3841 vft_res->vf_if_cap_flags = vf_if_cap_flags;
3842 vft_res->max_rx_qs = num_vf_qs;
3843 vft_res->max_rss_qs = num_vf_qs;
3844 vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);
3845 vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);
3846
3847 /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally
3848 * among the PF and it's VFs, if the fields are changeable
3849 */
3850 if (res_mod.max_uc_mac == FIELD_MODIFIABLE)
3851 vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);
3852
3853 if (res_mod.max_vlans == FIELD_MODIFIABLE)
3854 vft_res->max_vlans = res.max_vlans / (num_vfs + 1);
3855
3856 if (res_mod.max_iface_count == FIELD_MODIFIABLE)
3857 vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);
3858
3859 if (res_mod.max_mcc_count == FIELD_MODIFIABLE)
3860 vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);
3861 }
3862
3863 static int be_clear(struct be_adapter *adapter)
3864 {
3865 struct pci_dev *pdev = adapter->pdev;
3866 struct be_resources vft_res = {0};
3867
3868 be_cancel_worker(adapter);
3869
3870 if (sriov_enabled(adapter))
3871 be_vf_clear(adapter);
3872
3873 /* Re-configure FW to distribute resources evenly across max-supported
3874 * number of VFs, only when VFs are not already enabled.
3875 */
3876 if (skyhawk_chip(adapter) && be_physfn(adapter) &&
3877 !pci_vfs_assigned(pdev)) {
3878 be_calculate_vf_res(adapter,
3879 pci_sriov_get_totalvfs(pdev),
3880 &vft_res);
3881 be_cmd_set_sriov_config(adapter, adapter->pool_res,
3882 pci_sriov_get_totalvfs(pdev),
3883 &vft_res);
3884 }
3885
3886 be_disable_vxlan_offloads(adapter);
3887 kfree(adapter->pmac_id);
3888 adapter->pmac_id = NULL;
3889
3890 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
3891
3892 be_clear_queues(adapter);
3893
3894 be_msix_disable(adapter);
3895 adapter->flags &= ~BE_FLAGS_SETUP_DONE;
3896 return 0;
3897 }
3898
3899 static int be_vfs_if_create(struct be_adapter *adapter)
3900 {
3901 struct be_resources res = {0};
3902 u32 cap_flags, en_flags, vf;
3903 struct be_vf_cfg *vf_cfg;
3904 int status;
3905
3906 /* If a FW profile exists, then cap_flags are updated */
3907 cap_flags = BE_VF_IF_EN_FLAGS;
3908
3909 for_all_vfs(adapter, vf_cfg, vf) {
3910 if (!BE3_chip(adapter)) {
3911 status = be_cmd_get_profile_config(adapter, &res, NULL,
3912 ACTIVE_PROFILE_TYPE,
3913 RESOURCE_LIMITS,
3914 vf + 1);
3915 if (!status) {
3916 cap_flags = res.if_cap_flags;
3917 /* Prevent VFs from enabling VLAN promiscuous
3918 * mode
3919 */
3920 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
3921 }
3922 }
3923
3924 /* PF should enable IF flags during proxy if_create call */
3925 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
3926 status = be_cmd_if_create(adapter, cap_flags, en_flags,
3927 &vf_cfg->if_handle, vf + 1);
3928 if (status)
3929 return status;
3930 }
3931
3932 return 0;
3933 }
3934
3935 static int be_vf_setup_init(struct be_adapter *adapter)
3936 {
3937 struct be_vf_cfg *vf_cfg;
3938 int vf;
3939
3940 adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
3941 GFP_KERNEL);
3942 if (!adapter->vf_cfg)
3943 return -ENOMEM;
3944
3945 for_all_vfs(adapter, vf_cfg, vf) {
3946 vf_cfg->if_handle = -1;
3947 vf_cfg->pmac_id = -1;
3948 }
3949 return 0;
3950 }
3951
3952 static int be_vf_setup(struct be_adapter *adapter)
3953 {
3954 struct device *dev = &adapter->pdev->dev;
3955 struct be_vf_cfg *vf_cfg;
3956 int status, old_vfs, vf;
3957 bool spoofchk;
3958
3959 old_vfs = pci_num_vf(adapter->pdev);
3960
3961 status = be_vf_setup_init(adapter);
3962 if (status)
3963 goto err;
3964
3965 if (old_vfs) {
3966 for_all_vfs(adapter, vf_cfg, vf) {
3967 status = be_cmd_get_if_id(adapter, vf_cfg, vf);
3968 if (status)
3969 goto err;
3970 }
3971
3972 status = be_vfs_mac_query(adapter);
3973 if (status)
3974 goto err;
3975 } else {
3976 status = be_vfs_if_create(adapter);
3977 if (status)
3978 goto err;
3979
3980 status = be_vf_eth_addr_config(adapter);
3981 if (status)
3982 goto err;
3983 }
3984
3985 for_all_vfs(adapter, vf_cfg, vf) {
3986 /* Allow VFs to programs MAC/VLAN filters */
3987 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
3988 vf + 1);
3989 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
3990 status = be_cmd_set_fn_privileges(adapter,
3991 vf_cfg->privileges |
3992 BE_PRIV_FILTMGMT,
3993 vf + 1);
3994 if (!status) {
3995 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
3996 dev_info(dev, "VF%d has FILTMGMT privilege\n",
3997 vf);
3998 }
3999 }
4000
4001 /* Allow full available bandwidth */
4002 if (!old_vfs)
4003 be_cmd_config_qos(adapter, 0, 0, vf + 1);
4004
4005 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
4006 vf_cfg->if_handle, NULL,
4007 &spoofchk);
4008 if (!status)
4009 vf_cfg->spoofchk = spoofchk;
4010
4011 if (!old_vfs) {
4012 be_cmd_enable_vf(adapter, vf + 1);
4013 be_cmd_set_logical_link_config(adapter,
4014 IFLA_VF_LINK_STATE_AUTO,
4015 vf+1);
4016 }
4017 }
4018
4019 if (!old_vfs) {
4020 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
4021 if (status) {
4022 dev_err(dev, "SRIOV enable failed\n");
4023 adapter->num_vfs = 0;
4024 goto err;
4025 }
4026 }
4027
4028 if (BE3_chip(adapter)) {
4029 /* On BE3, enable VEB only when SRIOV is enabled */
4030 status = be_cmd_set_hsw_config(adapter, 0, 0,
4031 adapter->if_handle,
4032 PORT_FWD_TYPE_VEB, 0);
4033 if (status)
4034 goto err;
4035 }
4036
4037 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4038 return 0;
4039 err:
4040 dev_err(dev, "VF setup failed\n");
4041 be_vf_clear(adapter);
4042 return status;
4043 }
4044
4045 /* Converting function_mode bits on BE3 to SH mc_type enums */
4046
4047 static u8 be_convert_mc_type(u32 function_mode)
4048 {
4049 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4050 return vNIC1;
4051 else if (function_mode & QNQ_MODE)
4052 return FLEX10;
4053 else if (function_mode & VNIC_MODE)
4054 return vNIC2;
4055 else if (function_mode & UMC_ENABLED)
4056 return UMC;
4057 else
4058 return MC_NONE;
4059 }
4060
4061 /* On BE2/BE3 FW does not suggest the supported limits */
4062 static void BEx_get_resources(struct be_adapter *adapter,
4063 struct be_resources *res)
4064 {
4065 bool use_sriov = adapter->num_vfs ? 1 : 0;
4066
4067 if (be_physfn(adapter))
4068 res->max_uc_mac = BE_UC_PMAC_COUNT;
4069 else
4070 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4071
4072 adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4073
4074 if (be_is_mc(adapter)) {
4075 /* Assuming that there are 4 channels per port,
4076 * when multi-channel is enabled
4077 */
4078 if (be_is_qnq_mode(adapter))
4079 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4080 else
4081 /* In a non-qnq multichannel mode, the pvid
4082 * takes up one vlan entry
4083 */
4084 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4085 } else {
4086 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4087 }
4088
4089 res->max_mcast_mac = BE_MAX_MC;
4090
4091 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4092 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4093 * *only* if it is RSS-capable.
4094 */
4095 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||
4096 be_virtfn(adapter) ||
4097 (be_is_mc(adapter) &&
4098 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4099 res->max_tx_qs = 1;
4100 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4101 struct be_resources super_nic_res = {0};
4102
4103 /* On a SuperNIC profile, the driver needs to use the
4104 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4105 */
4106 be_cmd_get_profile_config(adapter, &super_nic_res, NULL,
4107 ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,
4108 0);
4109 /* Some old versions of BE3 FW don't report max_tx_qs value */
4110 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4111 } else {
4112 res->max_tx_qs = BE3_MAX_TX_QS;
4113 }
4114
4115 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4116 !use_sriov && be_physfn(adapter))
4117 res->max_rss_qs = (adapter->be3_native) ?
4118 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4119 res->max_rx_qs = res->max_rss_qs + 1;
4120
4121 if (be_physfn(adapter))
4122 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4123 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4124 else
4125 res->max_evt_qs = 1;
4126
4127 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4128 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4129 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4130 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4131 }
4132
4133 static void be_setup_init(struct be_adapter *adapter)
4134 {
4135 adapter->vlan_prio_bmap = 0xff;
4136 adapter->phy.link_speed = -1;
4137 adapter->if_handle = -1;
4138 adapter->be3_native = false;
4139 adapter->if_flags = 0;
4140 adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4141 if (be_physfn(adapter))
4142 adapter->cmd_privileges = MAX_PRIVILEGES;
4143 else
4144 adapter->cmd_privileges = MIN_PRIVILEGES;
4145 }
4146
4147 /* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.
4148 * However, this HW limitation is not exposed to the host via any SLI cmd.
4149 * As a result, in the case of SRIOV and in particular multi-partition configs
4150 * the driver needs to calcuate a proportional share of RSS Tables per PF-pool
4151 * for distribution between the VFs. This self-imposed limit will determine the
4152 * no: of VFs for which RSS can be enabled.
4153 */
4154 void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)
4155 {
4156 struct be_port_resources port_res = {0};
4157 u8 rss_tables_on_port;
4158 u16 max_vfs = be_max_vfs(adapter);
4159
4160 be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,
4161 RESOURCE_LIMITS, 0);
4162
4163 rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;
4164
4165 /* Each PF Pool's RSS Tables limit =
4166 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port
4167 */
4168 adapter->pool_res.max_rss_tables =
4169 max_vfs * rss_tables_on_port / port_res.max_vfs;
4170 }
4171
4172 static int be_get_sriov_config(struct be_adapter *adapter)
4173 {
4174 struct be_resources res = {0};
4175 int max_vfs, old_vfs;
4176
4177 be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,
4178 RESOURCE_LIMITS, 0);
4179
4180 /* Some old versions of BE3 FW don't report max_vfs value */
4181 if (BE3_chip(adapter) && !res.max_vfs) {
4182 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4183 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4184 }
4185
4186 adapter->pool_res = res;
4187
4188 /* If during previous unload of the driver, the VFs were not disabled,
4189 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4190 * Instead use the TotalVFs value stored in the pci-dev struct.
4191 */
4192 old_vfs = pci_num_vf(adapter->pdev);
4193 if (old_vfs) {
4194 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4195 old_vfs);
4196
4197 adapter->pool_res.max_vfs =
4198 pci_sriov_get_totalvfs(adapter->pdev);
4199 adapter->num_vfs = old_vfs;
4200 }
4201
4202 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4203 be_calculate_pf_pool_rss_tables(adapter);
4204 dev_info(&adapter->pdev->dev,
4205 "RSS can be enabled for all VFs if num_vfs <= %d\n",
4206 be_max_pf_pool_rss_tables(adapter));
4207 }
4208 return 0;
4209 }
4210
4211 static void be_alloc_sriov_res(struct be_adapter *adapter)
4212 {
4213 int old_vfs = pci_num_vf(adapter->pdev);
4214 struct be_resources vft_res = {0};
4215 int status;
4216
4217 be_get_sriov_config(adapter);
4218
4219 if (!old_vfs)
4220 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4221
4222 /* When the HW is in SRIOV capable configuration, the PF-pool
4223 * resources are given to PF during driver load, if there are no
4224 * old VFs. This facility is not available in BE3 FW.
4225 * Also, this is done by FW in Lancer chip.
4226 */
4227 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4228 be_calculate_vf_res(adapter, 0, &vft_res);
4229 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4230 &vft_res);
4231 if (status)
4232 dev_err(&adapter->pdev->dev,
4233 "Failed to optimize SRIOV resources\n");
4234 }
4235 }
4236
4237 static int be_get_resources(struct be_adapter *adapter)
4238 {
4239 struct device *dev = &adapter->pdev->dev;
4240 struct be_resources res = {0};
4241 int status;
4242
4243 /* For Lancer, SH etc read per-function resource limits from FW.
4244 * GET_FUNC_CONFIG returns per function guaranteed limits.
4245 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4246 */
4247 if (BEx_chip(adapter)) {
4248 BEx_get_resources(adapter, &res);
4249 } else {
4250 status = be_cmd_get_func_config(adapter, &res);
4251 if (status)
4252 return status;
4253
4254 /* If a deafault RXQ must be created, we'll use up one RSSQ*/
4255 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4256 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4257 res.max_rss_qs -= 1;
4258 }
4259
4260 /* If RoCE is supported stash away half the EQs for RoCE */
4261 res.max_nic_evt_qs = be_roce_supported(adapter) ?
4262 res.max_evt_qs / 2 : res.max_evt_qs;
4263 adapter->res = res;
4264
4265 /* If FW supports RSS default queue, then skip creating non-RSS
4266 * queue for non-IP traffic.
4267 */
4268 adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4269 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4270
4271 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4272 be_max_txqs(adapter), be_max_rxqs(adapter),
4273 be_max_rss(adapter), be_max_nic_eqs(adapter),
4274 be_max_vfs(adapter));
4275 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4276 be_max_uc(adapter), be_max_mc(adapter),
4277 be_max_vlans(adapter));
4278
4279 /* Ensure RX and TX queues are created in pairs at init time */
4280 adapter->cfg_num_rx_irqs =
4281 min_t(u16, netif_get_num_default_rss_queues(),
4282 be_max_qp_irqs(adapter));
4283 adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;
4284 return 0;
4285 }
4286
4287 static int be_get_config(struct be_adapter *adapter)
4288 {
4289 int status, level;
4290 u16 profile_id;
4291
4292 status = be_cmd_get_cntl_attributes(adapter);
4293 if (status)
4294 return status;
4295
4296 status = be_cmd_query_fw_cfg(adapter);
4297 if (status)
4298 return status;
4299
4300 if (!lancer_chip(adapter) && be_physfn(adapter))
4301 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4302
4303 if (BEx_chip(adapter)) {
4304 level = be_cmd_get_fw_log_level(adapter);
4305 adapter->msg_enable =
4306 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4307 }
4308
4309 be_cmd_get_acpi_wol_cap(adapter);
4310 pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);
4311 pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);
4312
4313 be_cmd_query_port_name(adapter);
4314
4315 if (be_physfn(adapter)) {
4316 status = be_cmd_get_active_profile(adapter, &profile_id);
4317 if (!status)
4318 dev_info(&adapter->pdev->dev,
4319 "Using profile 0x%x\n", profile_id);
4320 }
4321
4322 return 0;
4323 }
4324
4325 static int be_mac_setup(struct be_adapter *adapter)
4326 {
4327 u8 mac[ETH_ALEN];
4328 int status;
4329
4330 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4331 status = be_cmd_get_perm_mac(adapter, mac);
4332 if (status)
4333 return status;
4334
4335 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
4336 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4337 }
4338
4339 return 0;
4340 }
4341
4342 static void be_schedule_worker(struct be_adapter *adapter)
4343 {
4344 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
4345 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4346 }
4347
4348 static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4349 {
4350 schedule_delayed_work(&adapter->be_err_detection_work,
4351 msecs_to_jiffies(delay));
4352 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4353 }
4354
4355 static int be_setup_queues(struct be_adapter *adapter)
4356 {
4357 struct net_device *netdev = adapter->netdev;
4358 int status;
4359
4360 status = be_evt_queues_create(adapter);
4361 if (status)
4362 goto err;
4363
4364 status = be_tx_qs_create(adapter);
4365 if (status)
4366 goto err;
4367
4368 status = be_rx_cqs_create(adapter);
4369 if (status)
4370 goto err;
4371
4372 status = be_mcc_queues_create(adapter);
4373 if (status)
4374 goto err;
4375
4376 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4377 if (status)
4378 goto err;
4379
4380 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4381 if (status)
4382 goto err;
4383
4384 return 0;
4385 err:
4386 dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4387 return status;
4388 }
4389
4390 static int be_if_create(struct be_adapter *adapter)
4391 {
4392 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4393 u32 cap_flags = be_if_cap_flags(adapter);
4394 int status;
4395
4396 if (adapter->cfg_num_rx_irqs == 1)
4397 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4398
4399 en_flags &= cap_flags;
4400 /* will enable all the needed filter flags in be_open() */
4401 status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4402 &adapter->if_handle, 0);
4403
4404 return status;
4405 }
4406
4407 int be_update_queues(struct be_adapter *adapter)
4408 {
4409 struct net_device *netdev = adapter->netdev;
4410 int status;
4411
4412 if (netif_running(netdev))
4413 be_close(netdev);
4414
4415 be_cancel_worker(adapter);
4416
4417 /* If any vectors have been shared with RoCE we cannot re-program
4418 * the MSIx table.
4419 */
4420 if (!adapter->num_msix_roce_vec)
4421 be_msix_disable(adapter);
4422
4423 be_clear_queues(adapter);
4424 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4425 if (status)
4426 return status;
4427
4428 if (!msix_enabled(adapter)) {
4429 status = be_msix_enable(adapter);
4430 if (status)
4431 return status;
4432 }
4433
4434 status = be_if_create(adapter);
4435 if (status)
4436 return status;
4437
4438 status = be_setup_queues(adapter);
4439 if (status)
4440 return status;
4441
4442 be_schedule_worker(adapter);
4443
4444 if (netif_running(netdev))
4445 status = be_open(netdev);
4446
4447 return status;
4448 }
4449
4450 static inline int fw_major_num(const char *fw_ver)
4451 {
4452 int fw_major = 0, i;
4453
4454 i = sscanf(fw_ver, "%d.", &fw_major);
4455 if (i != 1)
4456 return 0;
4457
4458 return fw_major;
4459 }
4460
4461 /* If any VFs are already enabled don't FLR the PF */
4462 static bool be_reset_required(struct be_adapter *adapter)
4463 {
4464 return pci_num_vf(adapter->pdev) ? false : true;
4465 }
4466
4467 /* Wait for the FW to be ready and perform the required initialization */
4468 static int be_func_init(struct be_adapter *adapter)
4469 {
4470 int status;
4471
4472 status = be_fw_wait_ready(adapter);
4473 if (status)
4474 return status;
4475
4476 if (be_reset_required(adapter)) {
4477 status = be_cmd_reset_function(adapter);
4478 if (status)
4479 return status;
4480
4481 /* Wait for interrupts to quiesce after an FLR */
4482 msleep(100);
4483
4484 /* We can clear all errors when function reset succeeds */
4485 be_clear_error(adapter, BE_CLEAR_ALL);
4486 }
4487
4488 /* Tell FW we're ready to fire cmds */
4489 status = be_cmd_fw_init(adapter);
4490 if (status)
4491 return status;
4492
4493 /* Allow interrupts for other ULPs running on NIC function */
4494 be_intr_set(adapter, true);
4495
4496 return 0;
4497 }
4498
4499 static int be_setup(struct be_adapter *adapter)
4500 {
4501 struct device *dev = &adapter->pdev->dev;
4502 int status;
4503
4504 status = be_func_init(adapter);
4505 if (status)
4506 return status;
4507
4508 be_setup_init(adapter);
4509
4510 if (!lancer_chip(adapter))
4511 be_cmd_req_native_mode(adapter);
4512
4513 /* invoke this cmd first to get pf_num and vf_num which are needed
4514 * for issuing profile related cmds
4515 */
4516 if (!BEx_chip(adapter)) {
4517 status = be_cmd_get_func_config(adapter, NULL);
4518 if (status)
4519 return status;
4520 }
4521
4522 status = be_get_config(adapter);
4523 if (status)
4524 goto err;
4525
4526 if (!BE2_chip(adapter) && be_physfn(adapter))
4527 be_alloc_sriov_res(adapter);
4528
4529 status = be_get_resources(adapter);
4530 if (status)
4531 goto err;
4532
4533 adapter->pmac_id = kcalloc(be_max_uc(adapter),
4534 sizeof(*adapter->pmac_id), GFP_KERNEL);
4535 if (!adapter->pmac_id)
4536 return -ENOMEM;
4537
4538 status = be_msix_enable(adapter);
4539 if (status)
4540 goto err;
4541
4542 /* will enable all the needed filter flags in be_open() */
4543 status = be_if_create(adapter);
4544 if (status)
4545 goto err;
4546
4547 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4548 rtnl_lock();
4549 status = be_setup_queues(adapter);
4550 rtnl_unlock();
4551 if (status)
4552 goto err;
4553
4554 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4555
4556 status = be_mac_setup(adapter);
4557 if (status)
4558 goto err;
4559
4560 be_cmd_get_fw_ver(adapter);
4561 dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4562
4563 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4564 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4565 adapter->fw_ver);
4566 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4567 }
4568
4569 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4570 adapter->rx_fc);
4571 if (status)
4572 be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4573 &adapter->rx_fc);
4574
4575 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4576 adapter->tx_fc, adapter->rx_fc);
4577
4578 if (be_physfn(adapter))
4579 be_cmd_set_logical_link_config(adapter,
4580 IFLA_VF_LINK_STATE_AUTO, 0);
4581
4582 /* BE3 EVB echoes broadcast/multicast packets back to PF's vport
4583 * confusing a linux bridge or OVS that it might be connected to.
4584 * Set the EVB to PASSTHRU mode which effectively disables the EVB
4585 * when SRIOV is not enabled.
4586 */
4587 if (BE3_chip(adapter))
4588 be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,
4589 PORT_FWD_TYPE_PASSTHRU, 0);
4590
4591 if (adapter->num_vfs)
4592 be_vf_setup(adapter);
4593
4594 status = be_cmd_get_phy_info(adapter);
4595 if (!status && be_pause_supported(adapter))
4596 adapter->phy.fc_autoneg = 1;
4597
4598 be_schedule_worker(adapter);
4599 adapter->flags |= BE_FLAGS_SETUP_DONE;
4600 return 0;
4601 err:
4602 be_clear(adapter);
4603 return status;
4604 }
4605
4606 #ifdef CONFIG_NET_POLL_CONTROLLER
4607 static void be_netpoll(struct net_device *netdev)
4608 {
4609 struct be_adapter *adapter = netdev_priv(netdev);
4610 struct be_eq_obj *eqo;
4611 int i;
4612
4613 for_all_evt_queues(adapter, eqo, i) {
4614 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4615 napi_schedule(&eqo->napi);
4616 }
4617 }
4618 #endif
4619
4620 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4621 {
4622 const struct firmware *fw;
4623 int status;
4624
4625 if (!netif_running(adapter->netdev)) {
4626 dev_err(&adapter->pdev->dev,
4627 "Firmware load not allowed (interface is down)\n");
4628 return -ENETDOWN;
4629 }
4630
4631 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4632 if (status)
4633 goto fw_exit;
4634
4635 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4636
4637 if (lancer_chip(adapter))
4638 status = lancer_fw_download(adapter, fw);
4639 else
4640 status = be_fw_download(adapter, fw);
4641
4642 if (!status)
4643 be_cmd_get_fw_ver(adapter);
4644
4645 fw_exit:
4646 release_firmware(fw);
4647 return status;
4648 }
4649
4650 static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4651 u16 flags)
4652 {
4653 struct be_adapter *adapter = netdev_priv(dev);
4654 struct nlattr *attr, *br_spec;
4655 int rem;
4656 int status = 0;
4657 u16 mode = 0;
4658
4659 if (!sriov_enabled(adapter))
4660 return -EOPNOTSUPP;
4661
4662 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4663 if (!br_spec)
4664 return -EINVAL;
4665
4666 nla_for_each_nested(attr, br_spec, rem) {
4667 if (nla_type(attr) != IFLA_BRIDGE_MODE)
4668 continue;
4669
4670 if (nla_len(attr) < sizeof(mode))
4671 return -EINVAL;
4672
4673 mode = nla_get_u16(attr);
4674 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4675 return -EOPNOTSUPP;
4676
4677 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4678 return -EINVAL;
4679
4680 status = be_cmd_set_hsw_config(adapter, 0, 0,
4681 adapter->if_handle,
4682 mode == BRIDGE_MODE_VEPA ?
4683 PORT_FWD_TYPE_VEPA :
4684 PORT_FWD_TYPE_VEB, 0);
4685 if (status)
4686 goto err;
4687
4688 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
4689 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4690
4691 return status;
4692 }
4693 err:
4694 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
4695 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
4696
4697 return status;
4698 }
4699
4700 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
4701 struct net_device *dev, u32 filter_mask,
4702 int nlflags)
4703 {
4704 struct be_adapter *adapter = netdev_priv(dev);
4705 int status = 0;
4706 u8 hsw_mode;
4707
4708 /* BE and Lancer chips support VEB mode only */
4709 if (BEx_chip(adapter) || lancer_chip(adapter)) {
4710 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
4711 if (!pci_sriov_get_totalvfs(adapter->pdev))
4712 return 0;
4713 hsw_mode = PORT_FWD_TYPE_VEB;
4714 } else {
4715 status = be_cmd_get_hsw_config(adapter, NULL, 0,
4716 adapter->if_handle, &hsw_mode,
4717 NULL);
4718 if (status)
4719 return 0;
4720
4721 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
4722 return 0;
4723 }
4724
4725 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
4726 hsw_mode == PORT_FWD_TYPE_VEPA ?
4727 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
4728 0, 0, nlflags, filter_mask, NULL);
4729 }
4730
4731 /* VxLAN offload Notes:
4732 *
4733 * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't
4734 * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload
4735 * is expected to work across all types of IP tunnels once exported. Skyhawk
4736 * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN
4737 * offloads in hw_enc_features only when a VxLAN port is added. If other (non
4738 * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for
4739 * those other tunnels are unexported on the fly through ndo_features_check().
4740 *
4741 * Skyhawk supports VxLAN offloads only for one UDP dport. So, if the stack
4742 * adds more than one port, disable offloads and don't re-enable them again
4743 * until after all the tunnels are removed.
4744 */
4745 static void be_add_vxlan_port(struct net_device *netdev,
4746 struct udp_tunnel_info *ti)
4747 {
4748 struct be_adapter *adapter = netdev_priv(netdev);
4749 struct device *dev = &adapter->pdev->dev;
4750 __be16 port = ti->port;
4751 int status;
4752
4753 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
4754 return;
4755
4756 if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
4757 return;
4758
4759 if (adapter->vxlan_port == port && adapter->vxlan_port_count) {
4760 adapter->vxlan_port_aliases++;
4761 return;
4762 }
4763
4764 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) {
4765 dev_info(dev,
4766 "Only one UDP port supported for VxLAN offloads\n");
4767 dev_info(dev, "Disabling VxLAN offloads\n");
4768 adapter->vxlan_port_count++;
4769 goto err;
4770 }
4771
4772 if (adapter->vxlan_port_count++ >= 1)
4773 return;
4774
4775 status = be_cmd_manage_iface(adapter, adapter->if_handle,
4776 OP_CONVERT_NORMAL_TO_TUNNEL);
4777 if (status) {
4778 dev_warn(dev, "Failed to convert normal interface to tunnel\n");
4779 goto err;
4780 }
4781
4782 status = be_cmd_set_vxlan_port(adapter, port);
4783 if (status) {
4784 dev_warn(dev, "Failed to add VxLAN port\n");
4785 goto err;
4786 }
4787 adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
4788 adapter->vxlan_port = port;
4789
4790 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
4791 NETIF_F_TSO | NETIF_F_TSO6 |
4792 NETIF_F_GSO_UDP_TUNNEL;
4793 netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
4794 netdev->features |= NETIF_F_GSO_UDP_TUNNEL;
4795
4796 dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
4797 be16_to_cpu(port));
4798 return;
4799 err:
4800 be_disable_vxlan_offloads(adapter);
4801 }
4802
4803 static void be_del_vxlan_port(struct net_device *netdev,
4804 struct udp_tunnel_info *ti)
4805 {
4806 struct be_adapter *adapter = netdev_priv(netdev);
4807 __be16 port = ti->port;
4808
4809 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
4810 return;
4811
4812 if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter))
4813 return;
4814
4815 if (adapter->vxlan_port != port)
4816 goto done;
4817
4818 if (adapter->vxlan_port_aliases) {
4819 adapter->vxlan_port_aliases--;
4820 return;
4821 }
4822
4823 be_disable_vxlan_offloads(adapter);
4824
4825 dev_info(&adapter->pdev->dev,
4826 "Disabled VxLAN offloads for UDP port %d\n",
4827 be16_to_cpu(port));
4828 done:
4829 adapter->vxlan_port_count--;
4830 }
4831
4832 static netdev_features_t be_features_check(struct sk_buff *skb,
4833 struct net_device *dev,
4834 netdev_features_t features)
4835 {
4836 struct be_adapter *adapter = netdev_priv(dev);
4837 u8 l4_hdr = 0;
4838
4839 /* The code below restricts offload features for some tunneled packets.
4840 * Offload features for normal (non tunnel) packets are unchanged.
4841 */
4842 if (!skb->encapsulation ||
4843 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
4844 return features;
4845
4846 /* It's an encapsulated packet and VxLAN offloads are enabled. We
4847 * should disable tunnel offload features if it's not a VxLAN packet,
4848 * as tunnel offloads have been enabled only for VxLAN. This is done to
4849 * allow other tunneled traffic like GRE work fine while VxLAN
4850 * offloads are configured in Skyhawk-R.
4851 */
4852 switch (vlan_get_protocol(skb)) {
4853 case htons(ETH_P_IP):
4854 l4_hdr = ip_hdr(skb)->protocol;
4855 break;
4856 case htons(ETH_P_IPV6):
4857 l4_hdr = ipv6_hdr(skb)->nexthdr;
4858 break;
4859 default:
4860 return features;
4861 }
4862
4863 if (l4_hdr != IPPROTO_UDP ||
4864 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
4865 skb->inner_protocol != htons(ETH_P_TEB) ||
4866 skb_inner_mac_header(skb) - skb_transport_header(skb) !=
4867 sizeof(struct udphdr) + sizeof(struct vxlanhdr))
4868 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
4869
4870 return features;
4871 }
4872
4873 static int be_get_phys_port_id(struct net_device *dev,
4874 struct netdev_phys_item_id *ppid)
4875 {
4876 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
4877 struct be_adapter *adapter = netdev_priv(dev);
4878 u8 *id;
4879
4880 if (MAX_PHYS_ITEM_ID_LEN < id_len)
4881 return -ENOSPC;
4882
4883 ppid->id[0] = adapter->hba_port_num + 1;
4884 id = &ppid->id[1];
4885 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
4886 i--, id += CNTL_SERIAL_NUM_WORD_SZ)
4887 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
4888
4889 ppid->id_len = id_len;
4890
4891 return 0;
4892 }
4893
4894 static const struct net_device_ops be_netdev_ops = {
4895 .ndo_open = be_open,
4896 .ndo_stop = be_close,
4897 .ndo_start_xmit = be_xmit,
4898 .ndo_set_rx_mode = be_set_rx_mode,
4899 .ndo_set_mac_address = be_mac_addr_set,
4900 .ndo_change_mtu = be_change_mtu,
4901 .ndo_get_stats64 = be_get_stats64,
4902 .ndo_validate_addr = eth_validate_addr,
4903 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
4904 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
4905 .ndo_set_vf_mac = be_set_vf_mac,
4906 .ndo_set_vf_vlan = be_set_vf_vlan,
4907 .ndo_set_vf_rate = be_set_vf_tx_rate,
4908 .ndo_get_vf_config = be_get_vf_config,
4909 .ndo_set_vf_link_state = be_set_vf_link_state,
4910 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,
4911 #ifdef CONFIG_NET_POLL_CONTROLLER
4912 .ndo_poll_controller = be_netpoll,
4913 #endif
4914 .ndo_bridge_setlink = be_ndo_bridge_setlink,
4915 .ndo_bridge_getlink = be_ndo_bridge_getlink,
4916 #ifdef CONFIG_NET_RX_BUSY_POLL
4917 .ndo_busy_poll = be_busy_poll,
4918 #endif
4919 .ndo_udp_tunnel_add = be_add_vxlan_port,
4920 .ndo_udp_tunnel_del = be_del_vxlan_port,
4921 .ndo_features_check = be_features_check,
4922 .ndo_get_phys_port_id = be_get_phys_port_id,
4923 };
4924
4925 static void be_netdev_init(struct net_device *netdev)
4926 {
4927 struct be_adapter *adapter = netdev_priv(netdev);
4928
4929 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
4930 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
4931 NETIF_F_HW_VLAN_CTAG_TX;
4932 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
4933 netdev->hw_features |= NETIF_F_RXHASH;
4934
4935 netdev->features |= netdev->hw_features |
4936 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
4937
4938 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
4939 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
4940
4941 netdev->priv_flags |= IFF_UNICAST_FLT;
4942
4943 netdev->flags |= IFF_MULTICAST;
4944
4945 netif_set_gso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
4946
4947 netdev->netdev_ops = &be_netdev_ops;
4948
4949 netdev->ethtool_ops = &be_ethtool_ops;
4950 }
4951
4952 static void be_cleanup(struct be_adapter *adapter)
4953 {
4954 struct net_device *netdev = adapter->netdev;
4955
4956 rtnl_lock();
4957 netif_device_detach(netdev);
4958 if (netif_running(netdev))
4959 be_close(netdev);
4960 rtnl_unlock();
4961
4962 be_clear(adapter);
4963 }
4964
4965 static int be_resume(struct be_adapter *adapter)
4966 {
4967 struct net_device *netdev = adapter->netdev;
4968 int status;
4969
4970 status = be_setup(adapter);
4971 if (status)
4972 return status;
4973
4974 rtnl_lock();
4975 if (netif_running(netdev))
4976 status = be_open(netdev);
4977 rtnl_unlock();
4978
4979 if (status)
4980 return status;
4981
4982 netif_device_attach(netdev);
4983
4984 return 0;
4985 }
4986
4987 static int be_err_recover(struct be_adapter *adapter)
4988 {
4989 int status;
4990
4991 /* Error recovery is supported only Lancer as of now */
4992 if (!lancer_chip(adapter))
4993 return -EIO;
4994
4995 /* Wait for adapter to reach quiescent state before
4996 * destroying queues
4997 */
4998 status = be_fw_wait_ready(adapter);
4999 if (status)
5000 goto err;
5001
5002 be_cleanup(adapter);
5003
5004 status = be_resume(adapter);
5005 if (status)
5006 goto err;
5007
5008 return 0;
5009 err:
5010 return status;
5011 }
5012
5013 static void be_err_detection_task(struct work_struct *work)
5014 {
5015 struct be_adapter *adapter =
5016 container_of(work, struct be_adapter,
5017 be_err_detection_work.work);
5018 struct device *dev = &adapter->pdev->dev;
5019 int recovery_status;
5020 int delay = ERR_DETECTION_DELAY;
5021
5022 be_detect_error(adapter);
5023
5024 if (be_check_error(adapter, BE_ERROR_HW))
5025 recovery_status = be_err_recover(adapter);
5026 else
5027 goto reschedule_task;
5028
5029 if (!recovery_status) {
5030 adapter->recovery_retries = 0;
5031 dev_info(dev, "Adapter recovery successful\n");
5032 goto reschedule_task;
5033 } else if (be_virtfn(adapter)) {
5034 /* For VFs, check if PF have allocated resources
5035 * every second.
5036 */
5037 dev_err(dev, "Re-trying adapter recovery\n");
5038 goto reschedule_task;
5039 } else if (adapter->recovery_retries++ <
5040 MAX_ERR_RECOVERY_RETRY_COUNT) {
5041 /* In case of another error during recovery, it takes 30 sec
5042 * for adapter to come out of error. Retry error recovery after
5043 * this time interval.
5044 */
5045 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
5046 delay = ERR_RECOVERY_RETRY_DELAY;
5047 goto reschedule_task;
5048 } else {
5049 dev_err(dev, "Adapter recovery failed\n");
5050 }
5051
5052 return;
5053 reschedule_task:
5054 be_schedule_err_detection(adapter, delay);
5055 }
5056
5057 static void be_log_sfp_info(struct be_adapter *adapter)
5058 {
5059 int status;
5060
5061 status = be_cmd_query_sfp_info(adapter);
5062 if (!status) {
5063 dev_err(&adapter->pdev->dev,
5064 "Port %c: %s Vendor: %s part no: %s",
5065 adapter->port_name,
5066 be_misconfig_evt_port_state[adapter->phy_state],
5067 adapter->phy.vendor_name,
5068 adapter->phy.vendor_pn);
5069 }
5070 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
5071 }
5072
5073 static void be_worker(struct work_struct *work)
5074 {
5075 struct be_adapter *adapter =
5076 container_of(work, struct be_adapter, work.work);
5077 struct be_rx_obj *rxo;
5078 int i;
5079
5080 if (be_physfn(adapter) &&
5081 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5082 be_cmd_get_die_temperature(adapter);
5083
5084 /* when interrupts are not yet enabled, just reap any pending
5085 * mcc completions
5086 */
5087 if (!netif_running(adapter->netdev)) {
5088 local_bh_disable();
5089 be_process_mcc(adapter);
5090 local_bh_enable();
5091 goto reschedule;
5092 }
5093
5094 if (!adapter->stats_cmd_sent) {
5095 if (lancer_chip(adapter))
5096 lancer_cmd_get_pport_stats(adapter,
5097 &adapter->stats_cmd);
5098 else
5099 be_cmd_get_stats(adapter, &adapter->stats_cmd);
5100 }
5101
5102 for_all_rx_queues(adapter, rxo, i) {
5103 /* Replenish RX-queues starved due to memory
5104 * allocation failures.
5105 */
5106 if (rxo->rx_post_starved)
5107 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5108 }
5109
5110 /* EQ-delay update for Skyhawk is done while notifying EQ */
5111 if (!skyhawk_chip(adapter))
5112 be_eqd_update(adapter, false);
5113
5114 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5115 be_log_sfp_info(adapter);
5116
5117 reschedule:
5118 adapter->work_counter++;
5119 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
5120 }
5121
5122 static void be_unmap_pci_bars(struct be_adapter *adapter)
5123 {
5124 if (adapter->csr)
5125 pci_iounmap(adapter->pdev, adapter->csr);
5126 if (adapter->db)
5127 pci_iounmap(adapter->pdev, adapter->db);
5128 if (adapter->pcicfg && adapter->pcicfg_mapped)
5129 pci_iounmap(adapter->pdev, adapter->pcicfg);
5130 }
5131
5132 static int db_bar(struct be_adapter *adapter)
5133 {
5134 if (lancer_chip(adapter) || be_virtfn(adapter))
5135 return 0;
5136 else
5137 return 4;
5138 }
5139
5140 static int be_roce_map_pci_bars(struct be_adapter *adapter)
5141 {
5142 if (skyhawk_chip(adapter)) {
5143 adapter->roce_db.size = 4096;
5144 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5145 db_bar(adapter));
5146 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5147 db_bar(adapter));
5148 }
5149 return 0;
5150 }
5151
5152 static int be_map_pci_bars(struct be_adapter *adapter)
5153 {
5154 struct pci_dev *pdev = adapter->pdev;
5155 u8 __iomem *addr;
5156 u32 sli_intf;
5157
5158 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5159 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5160 SLI_INTF_FAMILY_SHIFT;
5161 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5162
5163 if (BEx_chip(adapter) && be_physfn(adapter)) {
5164 adapter->csr = pci_iomap(pdev, 2, 0);
5165 if (!adapter->csr)
5166 return -ENOMEM;
5167 }
5168
5169 addr = pci_iomap(pdev, db_bar(adapter), 0);
5170 if (!addr)
5171 goto pci_map_err;
5172 adapter->db = addr;
5173
5174 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5175 if (be_physfn(adapter)) {
5176 /* PCICFG is the 2nd BAR in BE2 */
5177 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5178 if (!addr)
5179 goto pci_map_err;
5180 adapter->pcicfg = addr;
5181 adapter->pcicfg_mapped = true;
5182 } else {
5183 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5184 adapter->pcicfg_mapped = false;
5185 }
5186 }
5187
5188 be_roce_map_pci_bars(adapter);
5189 return 0;
5190
5191 pci_map_err:
5192 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5193 be_unmap_pci_bars(adapter);
5194 return -ENOMEM;
5195 }
5196
5197 static void be_drv_cleanup(struct be_adapter *adapter)
5198 {
5199 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5200 struct device *dev = &adapter->pdev->dev;
5201
5202 if (mem->va)
5203 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5204
5205 mem = &adapter->rx_filter;
5206 if (mem->va)
5207 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5208
5209 mem = &adapter->stats_cmd;
5210 if (mem->va)
5211 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5212 }
5213
5214 /* Allocate and initialize various fields in be_adapter struct */
5215 static int be_drv_init(struct be_adapter *adapter)
5216 {
5217 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5218 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5219 struct be_dma_mem *rx_filter = &adapter->rx_filter;
5220 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5221 struct device *dev = &adapter->pdev->dev;
5222 int status = 0;
5223
5224 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5225 mbox_mem_alloc->va = dma_zalloc_coherent(dev, mbox_mem_alloc->size,
5226 &mbox_mem_alloc->dma,
5227 GFP_KERNEL);
5228 if (!mbox_mem_alloc->va)
5229 return -ENOMEM;
5230
5231 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5232 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5233 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5234
5235 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5236 rx_filter->va = dma_zalloc_coherent(dev, rx_filter->size,
5237 &rx_filter->dma, GFP_KERNEL);
5238 if (!rx_filter->va) {
5239 status = -ENOMEM;
5240 goto free_mbox;
5241 }
5242
5243 if (lancer_chip(adapter))
5244 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5245 else if (BE2_chip(adapter))
5246 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5247 else if (BE3_chip(adapter))
5248 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5249 else
5250 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5251 stats_cmd->va = dma_zalloc_coherent(dev, stats_cmd->size,
5252 &stats_cmd->dma, GFP_KERNEL);
5253 if (!stats_cmd->va) {
5254 status = -ENOMEM;
5255 goto free_rx_filter;
5256 }
5257
5258 mutex_init(&adapter->mbox_lock);
5259 spin_lock_init(&adapter->mcc_lock);
5260 spin_lock_init(&adapter->mcc_cq_lock);
5261 init_completion(&adapter->et_cmd_compl);
5262
5263 pci_save_state(adapter->pdev);
5264
5265 INIT_DELAYED_WORK(&adapter->work, be_worker);
5266 INIT_DELAYED_WORK(&adapter->be_err_detection_work,
5267 be_err_detection_task);
5268
5269 adapter->rx_fc = true;
5270 adapter->tx_fc = true;
5271
5272 /* Must be a power of 2 or else MODULO will BUG_ON */
5273 adapter->be_get_temp_freq = 64;
5274
5275 return 0;
5276
5277 free_rx_filter:
5278 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5279 free_mbox:
5280 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5281 mbox_mem_alloc->dma);
5282 return status;
5283 }
5284
5285 static void be_remove(struct pci_dev *pdev)
5286 {
5287 struct be_adapter *adapter = pci_get_drvdata(pdev);
5288
5289 if (!adapter)
5290 return;
5291
5292 be_roce_dev_remove(adapter);
5293 be_intr_set(adapter, false);
5294
5295 be_cancel_err_detection(adapter);
5296
5297 unregister_netdev(adapter->netdev);
5298
5299 be_clear(adapter);
5300
5301 /* tell fw we're done with firing cmds */
5302 be_cmd_fw_clean(adapter);
5303
5304 be_unmap_pci_bars(adapter);
5305 be_drv_cleanup(adapter);
5306
5307 pci_disable_pcie_error_reporting(pdev);
5308
5309 pci_release_regions(pdev);
5310 pci_disable_device(pdev);
5311
5312 free_netdev(adapter->netdev);
5313 }
5314
5315 static ssize_t be_hwmon_show_temp(struct device *dev,
5316 struct device_attribute *dev_attr,
5317 char *buf)
5318 {
5319 struct be_adapter *adapter = dev_get_drvdata(dev);
5320
5321 /* Unit: millidegree Celsius */
5322 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5323 return -EIO;
5324 else
5325 return sprintf(buf, "%u\n",
5326 adapter->hwmon_info.be_on_die_temp * 1000);
5327 }
5328
5329 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
5330 be_hwmon_show_temp, NULL, 1);
5331
5332 static struct attribute *be_hwmon_attrs[] = {
5333 &sensor_dev_attr_temp1_input.dev_attr.attr,
5334 NULL
5335 };
5336
5337 ATTRIBUTE_GROUPS(be_hwmon);
5338
5339 static char *mc_name(struct be_adapter *adapter)
5340 {
5341 char *str = ""; /* default */
5342
5343 switch (adapter->mc_type) {
5344 case UMC:
5345 str = "UMC";
5346 break;
5347 case FLEX10:
5348 str = "FLEX10";
5349 break;
5350 case vNIC1:
5351 str = "vNIC-1";
5352 break;
5353 case nPAR:
5354 str = "nPAR";
5355 break;
5356 case UFP:
5357 str = "UFP";
5358 break;
5359 case vNIC2:
5360 str = "vNIC-2";
5361 break;
5362 default:
5363 str = "";
5364 }
5365
5366 return str;
5367 }
5368
5369 static inline char *func_name(struct be_adapter *adapter)
5370 {
5371 return be_physfn(adapter) ? "PF" : "VF";
5372 }
5373
5374 static inline char *nic_name(struct pci_dev *pdev)
5375 {
5376 switch (pdev->device) {
5377 case OC_DEVICE_ID1:
5378 return OC_NAME;
5379 case OC_DEVICE_ID2:
5380 return OC_NAME_BE;
5381 case OC_DEVICE_ID3:
5382 case OC_DEVICE_ID4:
5383 return OC_NAME_LANCER;
5384 case BE_DEVICE_ID2:
5385 return BE3_NAME;
5386 case OC_DEVICE_ID5:
5387 case OC_DEVICE_ID6:
5388 return OC_NAME_SH;
5389 default:
5390 return BE_NAME;
5391 }
5392 }
5393
5394 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5395 {
5396 struct be_adapter *adapter;
5397 struct net_device *netdev;
5398 int status = 0;
5399
5400 dev_info(&pdev->dev, "%s version is %s\n", DRV_NAME, DRV_VER);
5401
5402 status = pci_enable_device(pdev);
5403 if (status)
5404 goto do_none;
5405
5406 status = pci_request_regions(pdev, DRV_NAME);
5407 if (status)
5408 goto disable_dev;
5409 pci_set_master(pdev);
5410
5411 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5412 if (!netdev) {
5413 status = -ENOMEM;
5414 goto rel_reg;
5415 }
5416 adapter = netdev_priv(netdev);
5417 adapter->pdev = pdev;
5418 pci_set_drvdata(pdev, adapter);
5419 adapter->netdev = netdev;
5420 SET_NETDEV_DEV(netdev, &pdev->dev);
5421
5422 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5423 if (!status) {
5424 netdev->features |= NETIF_F_HIGHDMA;
5425 } else {
5426 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
5427 if (status) {
5428 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5429 goto free_netdev;
5430 }
5431 }
5432
5433 status = pci_enable_pcie_error_reporting(pdev);
5434 if (!status)
5435 dev_info(&pdev->dev, "PCIe error reporting enabled\n");
5436
5437 status = be_map_pci_bars(adapter);
5438 if (status)
5439 goto free_netdev;
5440
5441 status = be_drv_init(adapter);
5442 if (status)
5443 goto unmap_bars;
5444
5445 status = be_setup(adapter);
5446 if (status)
5447 goto drv_cleanup;
5448
5449 be_netdev_init(netdev);
5450 status = register_netdev(netdev);
5451 if (status != 0)
5452 goto unsetup;
5453
5454 be_roce_dev_add(adapter);
5455
5456 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5457
5458 /* On Die temperature not supported for VF. */
5459 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5460 adapter->hwmon_info.hwmon_dev =
5461 devm_hwmon_device_register_with_groups(&pdev->dev,
5462 DRV_NAME,
5463 adapter,
5464 be_hwmon_groups);
5465 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5466 }
5467
5468 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5469 func_name(adapter), mc_name(adapter), adapter->port_name);
5470
5471 return 0;
5472
5473 unsetup:
5474 be_clear(adapter);
5475 drv_cleanup:
5476 be_drv_cleanup(adapter);
5477 unmap_bars:
5478 be_unmap_pci_bars(adapter);
5479 free_netdev:
5480 free_netdev(netdev);
5481 rel_reg:
5482 pci_release_regions(pdev);
5483 disable_dev:
5484 pci_disable_device(pdev);
5485 do_none:
5486 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5487 return status;
5488 }
5489
5490 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
5491 {
5492 struct be_adapter *adapter = pci_get_drvdata(pdev);
5493
5494 be_intr_set(adapter, false);
5495 be_cancel_err_detection(adapter);
5496
5497 be_cleanup(adapter);
5498
5499 pci_save_state(pdev);
5500 pci_disable_device(pdev);
5501 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5502 return 0;
5503 }
5504
5505 static int be_pci_resume(struct pci_dev *pdev)
5506 {
5507 struct be_adapter *adapter = pci_get_drvdata(pdev);
5508 int status = 0;
5509
5510 status = pci_enable_device(pdev);
5511 if (status)
5512 return status;
5513
5514 pci_restore_state(pdev);
5515
5516 status = be_resume(adapter);
5517 if (status)
5518 return status;
5519
5520 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5521
5522 return 0;
5523 }
5524
5525 /*
5526 * An FLR will stop BE from DMAing any data.
5527 */
5528 static void be_shutdown(struct pci_dev *pdev)
5529 {
5530 struct be_adapter *adapter = pci_get_drvdata(pdev);
5531
5532 if (!adapter)
5533 return;
5534
5535 be_roce_dev_shutdown(adapter);
5536 cancel_delayed_work_sync(&adapter->work);
5537 be_cancel_err_detection(adapter);
5538
5539 netif_device_detach(adapter->netdev);
5540
5541 be_cmd_reset_function(adapter);
5542
5543 pci_disable_device(pdev);
5544 }
5545
5546 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
5547 pci_channel_state_t state)
5548 {
5549 struct be_adapter *adapter = pci_get_drvdata(pdev);
5550
5551 dev_err(&adapter->pdev->dev, "EEH error detected\n");
5552
5553 be_roce_dev_remove(adapter);
5554
5555 if (!be_check_error(adapter, BE_ERROR_EEH)) {
5556 be_set_error(adapter, BE_ERROR_EEH);
5557
5558 be_cancel_err_detection(adapter);
5559
5560 be_cleanup(adapter);
5561 }
5562
5563 if (state == pci_channel_io_perm_failure)
5564 return PCI_ERS_RESULT_DISCONNECT;
5565
5566 pci_disable_device(pdev);
5567
5568 /* The error could cause the FW to trigger a flash debug dump.
5569 * Resetting the card while flash dump is in progress
5570 * can cause it not to recover; wait for it to finish.
5571 * Wait only for first function as it is needed only once per
5572 * adapter.
5573 */
5574 if (pdev->devfn == 0)
5575 ssleep(30);
5576
5577 return PCI_ERS_RESULT_NEED_RESET;
5578 }
5579
5580 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
5581 {
5582 struct be_adapter *adapter = pci_get_drvdata(pdev);
5583 int status;
5584
5585 dev_info(&adapter->pdev->dev, "EEH reset\n");
5586
5587 status = pci_enable_device(pdev);
5588 if (status)
5589 return PCI_ERS_RESULT_DISCONNECT;
5590
5591 pci_set_master(pdev);
5592 pci_restore_state(pdev);
5593
5594 /* Check if card is ok and fw is ready */
5595 dev_info(&adapter->pdev->dev,
5596 "Waiting for FW to be ready after EEH reset\n");
5597 status = be_fw_wait_ready(adapter);
5598 if (status)
5599 return PCI_ERS_RESULT_DISCONNECT;
5600
5601 pci_cleanup_aer_uncorrect_error_status(pdev);
5602 be_clear_error(adapter, BE_CLEAR_ALL);
5603 return PCI_ERS_RESULT_RECOVERED;
5604 }
5605
5606 static void be_eeh_resume(struct pci_dev *pdev)
5607 {
5608 int status = 0;
5609 struct be_adapter *adapter = pci_get_drvdata(pdev);
5610
5611 dev_info(&adapter->pdev->dev, "EEH resume\n");
5612
5613 pci_save_state(pdev);
5614
5615 status = be_resume(adapter);
5616 if (status)
5617 goto err;
5618
5619 be_roce_dev_add(adapter);
5620
5621 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5622 return;
5623 err:
5624 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
5625 }
5626
5627 static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
5628 {
5629 struct be_adapter *adapter = pci_get_drvdata(pdev);
5630 struct be_resources vft_res = {0};
5631 int status;
5632
5633 if (!num_vfs)
5634 be_vf_clear(adapter);
5635
5636 adapter->num_vfs = num_vfs;
5637
5638 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
5639 dev_warn(&pdev->dev,
5640 "Cannot disable VFs while they are assigned\n");
5641 return -EBUSY;
5642 }
5643
5644 /* When the HW is in SRIOV capable configuration, the PF-pool resources
5645 * are equally distributed across the max-number of VFs. The user may
5646 * request only a subset of the max-vfs to be enabled.
5647 * Based on num_vfs, redistribute the resources across num_vfs so that
5648 * each VF will have access to more number of resources.
5649 * This facility is not available in BE3 FW.
5650 * Also, this is done by FW in Lancer chip.
5651 */
5652 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
5653 be_calculate_vf_res(adapter, adapter->num_vfs,
5654 &vft_res);
5655 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
5656 adapter->num_vfs, &vft_res);
5657 if (status)
5658 dev_err(&pdev->dev,
5659 "Failed to optimize SR-IOV resources\n");
5660 }
5661
5662 status = be_get_resources(adapter);
5663 if (status)
5664 return be_cmd_status(status);
5665
5666 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
5667 rtnl_lock();
5668 status = be_update_queues(adapter);
5669 rtnl_unlock();
5670 if (status)
5671 return be_cmd_status(status);
5672
5673 if (adapter->num_vfs)
5674 status = be_vf_setup(adapter);
5675
5676 if (!status)
5677 return adapter->num_vfs;
5678
5679 return 0;
5680 }
5681
5682 static const struct pci_error_handlers be_eeh_handlers = {
5683 .error_detected = be_eeh_err_detected,
5684 .slot_reset = be_eeh_reset,
5685 .resume = be_eeh_resume,
5686 };
5687
5688 static struct pci_driver be_driver = {
5689 .name = DRV_NAME,
5690 .id_table = be_dev_ids,
5691 .probe = be_probe,
5692 .remove = be_remove,
5693 .suspend = be_suspend,
5694 .resume = be_pci_resume,
5695 .shutdown = be_shutdown,
5696 .sriov_configure = be_pci_sriov_configure,
5697 .err_handler = &be_eeh_handlers
5698 };
5699
5700 static int __init be_init_module(void)
5701 {
5702 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
5703 rx_frag_size != 2048) {
5704 printk(KERN_WARNING DRV_NAME
5705 " : Module param rx_frag_size must be 2048/4096/8192."
5706 " Using 2048\n");
5707 rx_frag_size = 2048;
5708 }
5709
5710 if (num_vfs > 0) {
5711 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
5712 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
5713 }
5714
5715 return pci_register_driver(&be_driver);
5716 }
5717 module_init(be_init_module);
5718
5719 static void __exit be_exit_module(void)
5720 {
5721 pci_unregister_driver(&be_driver);
5722 }
5723 module_exit(be_exit_module);
Linux kernel - Deliverables
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