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Merge tag 'pm-6.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
[linux-block.git] / drivers / net / ethernet / emulex / benet / be_main.c
... / ...
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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2005 - 2016 Broadcom
4 * All rights reserved.
5 *
6 * Contact Information:
7 * linux-drivers@emulex.com
8 *
9 * Emulex
10 * 3333 Susan Street
11 * Costa Mesa, CA 92626
12 */
13
14#include <linux/prefetch.h>
15#include <linux/module.h>
16#include "be.h"
17#include "be_cmds.h"
18#include <asm/div64.h>
19#include <linux/if_bridge.h>
20#include <net/busy_poll.h>
21#include <net/vxlan.h>
22
23MODULE_DESCRIPTION(DRV_DESC);
24MODULE_AUTHOR("Emulex Corporation");
25MODULE_LICENSE("GPL");
26
27/* num_vfs module param is obsolete.
28 * Use sysfs method to enable/disable VFs.
29 */
30static unsigned int num_vfs;
31module_param(num_vfs, uint, 0444);
32MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
33
34static ushort rx_frag_size = 2048;
35module_param(rx_frag_size, ushort, 0444);
36MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
37
38/* Per-module error detection/recovery workq shared across all functions.
39 * Each function schedules its own work request on this shared workq.
40 */
41static struct workqueue_struct *be_err_recovery_workq;
42
43static const struct pci_device_id be_dev_ids[] = {
44#ifdef CONFIG_BE2NET_BE2
45 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
46 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
47#endif /* CONFIG_BE2NET_BE2 */
48#ifdef CONFIG_BE2NET_BE3
49 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
50 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
51#endif /* CONFIG_BE2NET_BE3 */
52#ifdef CONFIG_BE2NET_LANCER
53 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
54 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
55#endif /* CONFIG_BE2NET_LANCER */
56#ifdef CONFIG_BE2NET_SKYHAWK
57 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
58 { PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
59#endif /* CONFIG_BE2NET_SKYHAWK */
60 { 0 }
61};
62MODULE_DEVICE_TABLE(pci, be_dev_ids);
63
64/* Workqueue used by all functions for defering cmd calls to the adapter */
65static struct workqueue_struct *be_wq;
66
67/* UE Status Low CSR */
68static const char * const ue_status_low_desc[] = {
69 "CEV",
70 "CTX",
71 "DBUF",
72 "ERX",
73 "Host",
74 "MPU",
75 "NDMA",
76 "PTC ",
77 "RDMA ",
78 "RXF ",
79 "RXIPS ",
80 "RXULP0 ",
81 "RXULP1 ",
82 "RXULP2 ",
83 "TIM ",
84 "TPOST ",
85 "TPRE ",
86 "TXIPS ",
87 "TXULP0 ",
88 "TXULP1 ",
89 "UC ",
90 "WDMA ",
91 "TXULP2 ",
92 "HOST1 ",
93 "P0_OB_LINK ",
94 "P1_OB_LINK ",
95 "HOST_GPIO ",
96 "MBOX ",
97 "ERX2 ",
98 "SPARE ",
99 "JTAG ",
100 "MPU_INTPEND "
101};
102
103/* UE Status High CSR */
104static const char * const ue_status_hi_desc[] = {
105 "LPCMEMHOST",
106 "MGMT_MAC",
107 "PCS0ONLINE",
108 "MPU_IRAM",
109 "PCS1ONLINE",
110 "PCTL0",
111 "PCTL1",
112 "PMEM",
113 "RR",
114 "TXPB",
115 "RXPP",
116 "XAUI",
117 "TXP",
118 "ARM",
119 "IPC",
120 "HOST2",
121 "HOST3",
122 "HOST4",
123 "HOST5",
124 "HOST6",
125 "HOST7",
126 "ECRC",
127 "Poison TLP",
128 "NETC",
129 "PERIPH",
130 "LLTXULP",
131 "D2P",
132 "RCON",
133 "LDMA",
134 "LLTXP",
135 "LLTXPB",
136 "Unknown"
137};
138
139#define BE_VF_IF_EN_FLAGS (BE_IF_FLAGS_UNTAGGED | \
140 BE_IF_FLAGS_BROADCAST | \
141 BE_IF_FLAGS_MULTICAST | \
142 BE_IF_FLAGS_PASS_L3L4_ERRORS)
143
144static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
145{
146 struct be_dma_mem *mem = &q->dma_mem;
147
148 if (mem->va) {
149 dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
150 mem->dma);
151 mem->va = NULL;
152 }
153}
154
155static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
156 u16 len, u16 entry_size)
157{
158 struct be_dma_mem *mem = &q->dma_mem;
159
160 memset(q, 0, sizeof(*q));
161 q->len = len;
162 q->entry_size = entry_size;
163 mem->size = len * entry_size;
164 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
165 &mem->dma, GFP_KERNEL);
166 if (!mem->va)
167 return -ENOMEM;
168 return 0;
169}
170
171static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
172{
173 u32 reg, enabled;
174
175 pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
176 &reg);
177 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
178
179 if (!enabled && enable)
180 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
181 else if (enabled && !enable)
182 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
183 else
184 return;
185
186 pci_write_config_dword(adapter->pdev,
187 PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
188}
189
190static void be_intr_set(struct be_adapter *adapter, bool enable)
191{
192 int status = 0;
193
194 /* On lancer interrupts can't be controlled via this register */
195 if (lancer_chip(adapter))
196 return;
197
198 if (be_check_error(adapter, BE_ERROR_EEH))
199 return;
200
201 status = be_cmd_intr_set(adapter, enable);
202 if (status)
203 be_reg_intr_set(adapter, enable);
204}
205
206static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
207{
208 u32 val = 0;
209
210 if (be_check_error(adapter, BE_ERROR_HW))
211 return;
212
213 val |= qid & DB_RQ_RING_ID_MASK;
214 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
215
216 wmb();
217 iowrite32(val, adapter->db + DB_RQ_OFFSET);
218}
219
220static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
221 u16 posted)
222{
223 u32 val = 0;
224
225 if (be_check_error(adapter, BE_ERROR_HW))
226 return;
227
228 val |= txo->q.id & DB_TXULP_RING_ID_MASK;
229 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
230
231 wmb();
232 iowrite32(val, adapter->db + txo->db_offset);
233}
234
235static void be_eq_notify(struct be_adapter *adapter, u16 qid,
236 bool arm, bool clear_int, u16 num_popped,
237 u32 eq_delay_mult_enc)
238{
239 u32 val = 0;
240
241 val |= qid & DB_EQ_RING_ID_MASK;
242 val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);
243
244 if (be_check_error(adapter, BE_ERROR_HW))
245 return;
246
247 if (arm)
248 val |= 1 << DB_EQ_REARM_SHIFT;
249 if (clear_int)
250 val |= 1 << DB_EQ_CLR_SHIFT;
251 val |= 1 << DB_EQ_EVNT_SHIFT;
252 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
253 val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;
254 iowrite32(val, adapter->db + DB_EQ_OFFSET);
255}
256
257void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
258{
259 u32 val = 0;
260
261 val |= qid & DB_CQ_RING_ID_MASK;
262 val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
263 DB_CQ_RING_ID_EXT_MASK_SHIFT);
264
265 if (be_check_error(adapter, BE_ERROR_HW))
266 return;
267
268 if (arm)
269 val |= 1 << DB_CQ_REARM_SHIFT;
270 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
271 iowrite32(val, adapter->db + DB_CQ_OFFSET);
272}
273
274static int be_dev_mac_add(struct be_adapter *adapter, const u8 *mac)
275{
276 int i;
277
278 /* Check if mac has already been added as part of uc-list */
279 for (i = 0; i < adapter->uc_macs; i++) {
280 if (ether_addr_equal(adapter->uc_list[i].mac, mac)) {
281 /* mac already added, skip addition */
282 adapter->pmac_id[0] = adapter->pmac_id[i + 1];
283 return 0;
284 }
285 }
286
287 return be_cmd_pmac_add(adapter, mac, adapter->if_handle,
288 &adapter->pmac_id[0], 0);
289}
290
291static void be_dev_mac_del(struct be_adapter *adapter, int pmac_id)
292{
293 int i;
294
295 /* Skip deletion if the programmed mac is
296 * being used in uc-list
297 */
298 for (i = 0; i < adapter->uc_macs; i++) {
299 if (adapter->pmac_id[i + 1] == pmac_id)
300 return;
301 }
302 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
303}
304
305static int be_mac_addr_set(struct net_device *netdev, void *p)
306{
307 struct be_adapter *adapter = netdev_priv(netdev);
308 struct device *dev = &adapter->pdev->dev;
309 struct sockaddr *addr = p;
310 int status;
311 u8 mac[ETH_ALEN];
312 u32 old_pmac_id = adapter->pmac_id[0];
313
314 if (!is_valid_ether_addr(addr->sa_data))
315 return -EADDRNOTAVAIL;
316
317 /* Proceed further only if, User provided MAC is different
318 * from active MAC
319 */
320 if (ether_addr_equal(addr->sa_data, adapter->dev_mac))
321 return 0;
322
323 /* BE3 VFs without FILTMGMT privilege are not allowed to set its MAC
324 * address
325 */
326 if (BEx_chip(adapter) && be_virtfn(adapter) &&
327 !check_privilege(adapter, BE_PRIV_FILTMGMT))
328 return -EPERM;
329
330 /* if device is not running, copy MAC to netdev->dev_addr */
331 if (!netif_running(netdev))
332 goto done;
333
334 /* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
335 * privilege or if PF did not provision the new MAC address.
336 * On BE3, this cmd will always fail if the VF doesn't have the
337 * FILTMGMT privilege. This failure is OK, only if the PF programmed
338 * the MAC for the VF.
339 */
340 mutex_lock(&adapter->rx_filter_lock);
341 status = be_dev_mac_add(adapter, (u8 *)addr->sa_data);
342 if (!status) {
343
344 /* Delete the old programmed MAC. This call may fail if the
345 * old MAC was already deleted by the PF driver.
346 */
347 if (adapter->pmac_id[0] != old_pmac_id)
348 be_dev_mac_del(adapter, old_pmac_id);
349 }
350
351 mutex_unlock(&adapter->rx_filter_lock);
352 /* Decide if the new MAC is successfully activated only after
353 * querying the FW
354 */
355 status = be_cmd_get_active_mac(adapter, adapter->pmac_id[0], mac,
356 adapter->if_handle, true, 0);
357 if (status)
358 goto err;
359
360 /* The MAC change did not happen, either due to lack of privilege
361 * or PF didn't pre-provision.
362 */
363 if (!ether_addr_equal(addr->sa_data, mac)) {
364 status = -EPERM;
365 goto err;
366 }
367
368 /* Remember currently programmed MAC */
369 ether_addr_copy(adapter->dev_mac, addr->sa_data);
370done:
371 eth_hw_addr_set(netdev, addr->sa_data);
372 dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
373 return 0;
374err:
375 dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
376 return status;
377}
378
379/* BE2 supports only v0 cmd */
380static void *hw_stats_from_cmd(struct be_adapter *adapter)
381{
382 if (BE2_chip(adapter)) {
383 struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
384
385 return &cmd->hw_stats;
386 } else if (BE3_chip(adapter)) {
387 struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
388
389 return &cmd->hw_stats;
390 } else {
391 struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
392
393 return &cmd->hw_stats;
394 }
395}
396
397/* BE2 supports only v0 cmd */
398static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
399{
400 if (BE2_chip(adapter)) {
401 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
402
403 return &hw_stats->erx;
404 } else if (BE3_chip(adapter)) {
405 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
406
407 return &hw_stats->erx;
408 } else {
409 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
410
411 return &hw_stats->erx;
412 }
413}
414
415static void populate_be_v0_stats(struct be_adapter *adapter)
416{
417 struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
418 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
419 struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
420 struct be_port_rxf_stats_v0 *port_stats =
421 &rxf_stats->port[adapter->port_num];
422 struct be_drv_stats *drvs = &adapter->drv_stats;
423
424 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
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->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
435 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
436 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
437 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
438 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
439 drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
440 drvs->rx_dropped_header_too_small =
441 port_stats->rx_dropped_header_too_small;
442 drvs->rx_address_filtered =
443 port_stats->rx_address_filtered +
444 port_stats->rx_vlan_filtered;
445 drvs->rx_alignment_symbol_errors =
446 port_stats->rx_alignment_symbol_errors;
447
448 drvs->tx_pauseframes = port_stats->tx_pauseframes;
449 drvs->tx_controlframes = port_stats->tx_controlframes;
450
451 if (adapter->port_num)
452 drvs->jabber_events = rxf_stats->port1_jabber_events;
453 else
454 drvs->jabber_events = rxf_stats->port0_jabber_events;
455 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
456 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
457 drvs->forwarded_packets = rxf_stats->forwarded_packets;
458 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
459 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
460 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
461 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
462}
463
464static void populate_be_v1_stats(struct be_adapter *adapter)
465{
466 struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
467 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
468 struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
469 struct be_port_rxf_stats_v1 *port_stats =
470 &rxf_stats->port[adapter->port_num];
471 struct be_drv_stats *drvs = &adapter->drv_stats;
472
473 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
474 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
475 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
476 drvs->rx_pause_frames = port_stats->rx_pause_frames;
477 drvs->rx_crc_errors = port_stats->rx_crc_errors;
478 drvs->rx_control_frames = port_stats->rx_control_frames;
479 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
480 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
481 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
482 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
483 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
484 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
485 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
486 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
487 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
488 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
489 drvs->rx_dropped_header_too_small =
490 port_stats->rx_dropped_header_too_small;
491 drvs->rx_input_fifo_overflow_drop =
492 port_stats->rx_input_fifo_overflow_drop;
493 drvs->rx_address_filtered = port_stats->rx_address_filtered;
494 drvs->rx_alignment_symbol_errors =
495 port_stats->rx_alignment_symbol_errors;
496 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
497 drvs->tx_pauseframes = port_stats->tx_pauseframes;
498 drvs->tx_controlframes = port_stats->tx_controlframes;
499 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
500 drvs->jabber_events = port_stats->jabber_events;
501 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
502 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
503 drvs->forwarded_packets = rxf_stats->forwarded_packets;
504 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
505 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
506 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
507 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
508}
509
510static void populate_be_v2_stats(struct be_adapter *adapter)
511{
512 struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
513 struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
514 struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
515 struct be_port_rxf_stats_v2 *port_stats =
516 &rxf_stats->port[adapter->port_num];
517 struct be_drv_stats *drvs = &adapter->drv_stats;
518
519 be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
520 drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
521 drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
522 drvs->rx_pause_frames = port_stats->rx_pause_frames;
523 drvs->rx_crc_errors = port_stats->rx_crc_errors;
524 drvs->rx_control_frames = port_stats->rx_control_frames;
525 drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
526 drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
527 drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
528 drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
529 drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
530 drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
531 drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
532 drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
533 drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
534 drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
535 drvs->rx_dropped_header_too_small =
536 port_stats->rx_dropped_header_too_small;
537 drvs->rx_input_fifo_overflow_drop =
538 port_stats->rx_input_fifo_overflow_drop;
539 drvs->rx_address_filtered = port_stats->rx_address_filtered;
540 drvs->rx_alignment_symbol_errors =
541 port_stats->rx_alignment_symbol_errors;
542 drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
543 drvs->tx_pauseframes = port_stats->tx_pauseframes;
544 drvs->tx_controlframes = port_stats->tx_controlframes;
545 drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
546 drvs->jabber_events = port_stats->jabber_events;
547 drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
548 drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
549 drvs->forwarded_packets = rxf_stats->forwarded_packets;
550 drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
551 drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
552 drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
553 adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
554 if (be_roce_supported(adapter)) {
555 drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
556 drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
557 drvs->rx_roce_frames = port_stats->roce_frames_received;
558 drvs->roce_drops_crc = port_stats->roce_drops_crc;
559 drvs->roce_drops_payload_len =
560 port_stats->roce_drops_payload_len;
561 }
562}
563
564static void populate_lancer_stats(struct be_adapter *adapter)
565{
566 struct be_drv_stats *drvs = &adapter->drv_stats;
567 struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);
568
569 be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
570 drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
571 drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
572 drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
573 drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
574 drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
575 drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
576 drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
577 drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
578 drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
579 drvs->rx_dropped_tcp_length =
580 pport_stats->rx_dropped_invalid_tcp_length;
581 drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
582 drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
583 drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
584 drvs->rx_dropped_header_too_small =
585 pport_stats->rx_dropped_header_too_small;
586 drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
587 drvs->rx_address_filtered =
588 pport_stats->rx_address_filtered +
589 pport_stats->rx_vlan_filtered;
590 drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
591 drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
592 drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
593 drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
594 drvs->jabber_events = pport_stats->rx_jabbers;
595 drvs->forwarded_packets = pport_stats->num_forwards_lo;
596 drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
597 drvs->rx_drops_too_many_frags =
598 pport_stats->rx_drops_too_many_frags_lo;
599}
600
601static void accumulate_16bit_val(u32 *acc, u16 val)
602{
603#define lo(x) (x & 0xFFFF)
604#define hi(x) (x & 0xFFFF0000)
605 bool wrapped = val < lo(*acc);
606 u32 newacc = hi(*acc) + val;
607
608 if (wrapped)
609 newacc += 65536;
610 WRITE_ONCE(*acc, newacc);
611}
612
613static void populate_erx_stats(struct be_adapter *adapter,
614 struct be_rx_obj *rxo, u32 erx_stat)
615{
616 if (!BEx_chip(adapter))
617 rx_stats(rxo)->rx_drops_no_frags = erx_stat;
618 else
619 /* below erx HW counter can actually wrap around after
620 * 65535. Driver accumulates a 32-bit value
621 */
622 accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
623 (u16)erx_stat);
624}
625
626void be_parse_stats(struct be_adapter *adapter)
627{
628 struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
629 struct be_rx_obj *rxo;
630 int i;
631 u32 erx_stat;
632
633 if (lancer_chip(adapter)) {
634 populate_lancer_stats(adapter);
635 } else {
636 if (BE2_chip(adapter))
637 populate_be_v0_stats(adapter);
638 else if (BE3_chip(adapter))
639 /* for BE3 */
640 populate_be_v1_stats(adapter);
641 else
642 populate_be_v2_stats(adapter);
643
644 /* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
645 for_all_rx_queues(adapter, rxo, i) {
646 erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
647 populate_erx_stats(adapter, rxo, erx_stat);
648 }
649 }
650}
651
652static void be_get_stats64(struct net_device *netdev,
653 struct rtnl_link_stats64 *stats)
654{
655 struct be_adapter *adapter = netdev_priv(netdev);
656 struct be_drv_stats *drvs = &adapter->drv_stats;
657 struct be_rx_obj *rxo;
658 struct be_tx_obj *txo;
659 u64 pkts, bytes;
660 unsigned int start;
661 int i;
662
663 for_all_rx_queues(adapter, rxo, i) {
664 const struct be_rx_stats *rx_stats = rx_stats(rxo);
665
666 do {
667 start = u64_stats_fetch_begin(&rx_stats->sync);
668 pkts = rx_stats(rxo)->rx_pkts;
669 bytes = rx_stats(rxo)->rx_bytes;
670 } while (u64_stats_fetch_retry(&rx_stats->sync, start));
671 stats->rx_packets += pkts;
672 stats->rx_bytes += bytes;
673 stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
674 stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
675 rx_stats(rxo)->rx_drops_no_frags;
676 }
677
678 for_all_tx_queues(adapter, txo, i) {
679 const struct be_tx_stats *tx_stats = tx_stats(txo);
680
681 do {
682 start = u64_stats_fetch_begin(&tx_stats->sync);
683 pkts = tx_stats(txo)->tx_pkts;
684 bytes = tx_stats(txo)->tx_bytes;
685 } while (u64_stats_fetch_retry(&tx_stats->sync, start));
686 stats->tx_packets += pkts;
687 stats->tx_bytes += bytes;
688 }
689
690 /* bad pkts received */
691 stats->rx_errors = drvs->rx_crc_errors +
692 drvs->rx_alignment_symbol_errors +
693 drvs->rx_in_range_errors +
694 drvs->rx_out_range_errors +
695 drvs->rx_frame_too_long +
696 drvs->rx_dropped_too_small +
697 drvs->rx_dropped_too_short +
698 drvs->rx_dropped_header_too_small +
699 drvs->rx_dropped_tcp_length +
700 drvs->rx_dropped_runt;
701
702 /* detailed rx errors */
703 stats->rx_length_errors = drvs->rx_in_range_errors +
704 drvs->rx_out_range_errors +
705 drvs->rx_frame_too_long;
706
707 stats->rx_crc_errors = drvs->rx_crc_errors;
708
709 /* frame alignment errors */
710 stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
711
712 /* receiver fifo overrun */
713 /* drops_no_pbuf is no per i/f, it's per BE card */
714 stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
715 drvs->rx_input_fifo_overflow_drop +
716 drvs->rx_drops_no_pbuf;
717}
718
719void be_link_status_update(struct be_adapter *adapter, u8 link_status)
720{
721 struct net_device *netdev = adapter->netdev;
722
723 if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
724 netif_carrier_off(netdev);
725 adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
726 }
727
728 if (link_status)
729 netif_carrier_on(netdev);
730 else
731 netif_carrier_off(netdev);
732
733 netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
734}
735
736static int be_gso_hdr_len(struct sk_buff *skb)
737{
738 if (skb->encapsulation)
739 return skb_inner_tcp_all_headers(skb);
740
741 return skb_tcp_all_headers(skb);
742}
743
744static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
745{
746 struct be_tx_stats *stats = tx_stats(txo);
747 u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
748 /* Account for headers which get duplicated in TSO pkt */
749 u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0;
750
751 u64_stats_update_begin(&stats->sync);
752 stats->tx_reqs++;
753 stats->tx_bytes += skb->len + dup_hdr_len;
754 stats->tx_pkts += tx_pkts;
755 if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
756 stats->tx_vxlan_offload_pkts += tx_pkts;
757 u64_stats_update_end(&stats->sync);
758}
759
760/* Returns number of WRBs needed for the skb */
761static u32 skb_wrb_cnt(struct sk_buff *skb)
762{
763 /* +1 for the header wrb */
764 return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;
765}
766
767static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
768{
769 wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));
770 wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));
771 wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);
772 wrb->rsvd0 = 0;
773}
774
775/* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb
776 * to avoid the swap and shift/mask operations in wrb_fill().
777 */
778static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)
779{
780 wrb->frag_pa_hi = 0;
781 wrb->frag_pa_lo = 0;
782 wrb->frag_len = 0;
783 wrb->rsvd0 = 0;
784}
785
786static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
787 struct sk_buff *skb)
788{
789 u8 vlan_prio;
790 u16 vlan_tag;
791
792 vlan_tag = skb_vlan_tag_get(skb);
793 vlan_prio = skb_vlan_tag_get_prio(skb);
794 /* If vlan priority provided by OS is NOT in available bmap */
795 if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
796 vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
797 adapter->recommended_prio_bits;
798
799 return vlan_tag;
800}
801
802/* Used only for IP tunnel packets */
803static u16 skb_inner_ip_proto(struct sk_buff *skb)
804{
805 return (inner_ip_hdr(skb)->version == 4) ?
806 inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
807}
808
809static u16 skb_ip_proto(struct sk_buff *skb)
810{
811 return (ip_hdr(skb)->version == 4) ?
812 ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
813}
814
815static inline bool be_is_txq_full(struct be_tx_obj *txo)
816{
817 return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;
818}
819
820static inline bool be_can_txq_wake(struct be_tx_obj *txo)
821{
822 return atomic_read(&txo->q.used) < txo->q.len / 2;
823}
824
825static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)
826{
827 return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;
828}
829
830static void be_get_wrb_params_from_skb(struct be_adapter *adapter,
831 struct sk_buff *skb,
832 struct be_wrb_params *wrb_params)
833{
834 u16 proto;
835
836 if (skb_is_gso(skb)) {
837 BE_WRB_F_SET(wrb_params->features, LSO, 1);
838 wrb_params->lso_mss = skb_shinfo(skb)->gso_size;
839 if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
840 BE_WRB_F_SET(wrb_params->features, LSO6, 1);
841 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
842 if (skb->encapsulation) {
843 BE_WRB_F_SET(wrb_params->features, IPCS, 1);
844 proto = skb_inner_ip_proto(skb);
845 } else {
846 proto = skb_ip_proto(skb);
847 }
848 if (proto == IPPROTO_TCP)
849 BE_WRB_F_SET(wrb_params->features, TCPCS, 1);
850 else if (proto == IPPROTO_UDP)
851 BE_WRB_F_SET(wrb_params->features, UDPCS, 1);
852 }
853
854 if (skb_vlan_tag_present(skb)) {
855 BE_WRB_F_SET(wrb_params->features, VLAN, 1);
856 wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);
857 }
858
859 BE_WRB_F_SET(wrb_params->features, CRC, 1);
860}
861
862static void wrb_fill_hdr(struct be_adapter *adapter,
863 struct be_eth_hdr_wrb *hdr,
864 struct be_wrb_params *wrb_params,
865 struct sk_buff *skb)
866{
867 memset(hdr, 0, sizeof(*hdr));
868
869 SET_TX_WRB_HDR_BITS(crc, hdr,
870 BE_WRB_F_GET(wrb_params->features, CRC));
871 SET_TX_WRB_HDR_BITS(ipcs, hdr,
872 BE_WRB_F_GET(wrb_params->features, IPCS));
873 SET_TX_WRB_HDR_BITS(tcpcs, hdr,
874 BE_WRB_F_GET(wrb_params->features, TCPCS));
875 SET_TX_WRB_HDR_BITS(udpcs, hdr,
876 BE_WRB_F_GET(wrb_params->features, UDPCS));
877
878 SET_TX_WRB_HDR_BITS(lso, hdr,
879 BE_WRB_F_GET(wrb_params->features, LSO));
880 SET_TX_WRB_HDR_BITS(lso6, hdr,
881 BE_WRB_F_GET(wrb_params->features, LSO6));
882 SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);
883
884 /* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this
885 * hack is not needed, the evt bit is set while ringing DB.
886 */
887 SET_TX_WRB_HDR_BITS(event, hdr,
888 BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));
889 SET_TX_WRB_HDR_BITS(vlan, hdr,
890 BE_WRB_F_GET(wrb_params->features, VLAN));
891 SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);
892
893 SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));
894 SET_TX_WRB_HDR_BITS(len, hdr, skb->len);
895 SET_TX_WRB_HDR_BITS(mgmt, hdr,
896 BE_WRB_F_GET(wrb_params->features, OS2BMC));
897}
898
899static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
900 bool unmap_single)
901{
902 dma_addr_t dma;
903 u32 frag_len = le32_to_cpu(wrb->frag_len);
904
905
906 dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |
907 (u64)le32_to_cpu(wrb->frag_pa_lo);
908 if (frag_len) {
909 if (unmap_single)
910 dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);
911 else
912 dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);
913 }
914}
915
916/* Grab a WRB header for xmit */
917static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)
918{
919 u32 head = txo->q.head;
920
921 queue_head_inc(&txo->q);
922 return head;
923}
924
925/* Set up the WRB header for xmit */
926static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,
927 struct be_tx_obj *txo,
928 struct be_wrb_params *wrb_params,
929 struct sk_buff *skb, u16 head)
930{
931 u32 num_frags = skb_wrb_cnt(skb);
932 struct be_queue_info *txq = &txo->q;
933 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);
934
935 wrb_fill_hdr(adapter, hdr, wrb_params, skb);
936 be_dws_cpu_to_le(hdr, sizeof(*hdr));
937
938 BUG_ON(txo->sent_skb_list[head]);
939 txo->sent_skb_list[head] = skb;
940 txo->last_req_hdr = head;
941 atomic_add(num_frags, &txq->used);
942 txo->last_req_wrb_cnt = num_frags;
943 txo->pend_wrb_cnt += num_frags;
944}
945
946/* Setup a WRB fragment (buffer descriptor) for xmit */
947static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,
948 int len)
949{
950 struct be_eth_wrb *wrb;
951 struct be_queue_info *txq = &txo->q;
952
953 wrb = queue_head_node(txq);
954 wrb_fill(wrb, busaddr, len);
955 queue_head_inc(txq);
956}
957
958/* Bring the queue back to the state it was in before be_xmit_enqueue() routine
959 * was invoked. The producer index is restored to the previous packet and the
960 * WRBs of the current packet are unmapped. Invoked to handle tx setup errors.
961 */
962static void be_xmit_restore(struct be_adapter *adapter,
963 struct be_tx_obj *txo, u32 head, bool map_single,
964 u32 copied)
965{
966 struct device *dev;
967 struct be_eth_wrb *wrb;
968 struct be_queue_info *txq = &txo->q;
969
970 dev = &adapter->pdev->dev;
971 txq->head = head;
972
973 /* skip the first wrb (hdr); it's not mapped */
974 queue_head_inc(txq);
975 while (copied) {
976 wrb = queue_head_node(txq);
977 unmap_tx_frag(dev, wrb, map_single);
978 map_single = false;
979 copied -= le32_to_cpu(wrb->frag_len);
980 queue_head_inc(txq);
981 }
982
983 txq->head = head;
984}
985
986/* Enqueue the given packet for transmit. This routine allocates WRBs for the
987 * packet, dma maps the packet buffers and sets up the WRBs. Returns the number
988 * of WRBs used up by the packet.
989 */
990static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,
991 struct sk_buff *skb,
992 struct be_wrb_params *wrb_params)
993{
994 u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);
995 struct device *dev = &adapter->pdev->dev;
996 bool map_single = false;
997 u32 head;
998 dma_addr_t busaddr;
999 int len;
1000
1001 head = be_tx_get_wrb_hdr(txo);
1002
1003 if (skb->len > skb->data_len) {
1004 len = skb_headlen(skb);
1005
1006 busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
1007 if (dma_mapping_error(dev, busaddr))
1008 goto dma_err;
1009 map_single = true;
1010 be_tx_setup_wrb_frag(txo, busaddr, len);
1011 copied += len;
1012 }
1013
1014 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1015 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1016 len = skb_frag_size(frag);
1017
1018 busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE);
1019 if (dma_mapping_error(dev, busaddr))
1020 goto dma_err;
1021 be_tx_setup_wrb_frag(txo, busaddr, len);
1022 copied += len;
1023 }
1024
1025 be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head);
1026
1027 be_tx_stats_update(txo, skb);
1028 return wrb_cnt;
1029
1030dma_err:
1031 adapter->drv_stats.dma_map_errors++;
1032 be_xmit_restore(adapter, txo, head, map_single, copied);
1033 return 0;
1034}
1035
1036static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
1037{
1038 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
1039}
1040
1041static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
1042 struct sk_buff *skb,
1043 struct be_wrb_params
1044 *wrb_params)
1045{
1046 bool insert_vlan = false;
1047 u16 vlan_tag = 0;
1048
1049 skb = skb_share_check(skb, GFP_ATOMIC);
1050 if (unlikely(!skb))
1051 return skb;
1052
1053 if (skb_vlan_tag_present(skb)) {
1054 vlan_tag = be_get_tx_vlan_tag(adapter, skb);
1055 insert_vlan = true;
1056 }
1057
1058 if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
1059 if (!insert_vlan) {
1060 vlan_tag = adapter->pvid;
1061 insert_vlan = true;
1062 }
1063 /* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
1064 * skip VLAN insertion
1065 */
1066 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1067 }
1068
1069 if (insert_vlan) {
1070 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1071 vlan_tag);
1072 if (unlikely(!skb))
1073 return skb;
1074 __vlan_hwaccel_clear_tag(skb);
1075 }
1076
1077 /* Insert the outer VLAN, if any */
1078 if (adapter->qnq_vid) {
1079 vlan_tag = adapter->qnq_vid;
1080 skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1081 vlan_tag);
1082 if (unlikely(!skb))
1083 return skb;
1084 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1085 }
1086
1087 return skb;
1088}
1089
1090static bool be_ipv6_exthdr_check(struct sk_buff *skb)
1091{
1092 struct ethhdr *eh = (struct ethhdr *)skb->data;
1093 u16 offset = ETH_HLEN;
1094
1095 if (eh->h_proto == htons(ETH_P_IPV6)) {
1096 struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);
1097
1098 offset += sizeof(struct ipv6hdr);
1099 if (ip6h->nexthdr != NEXTHDR_TCP &&
1100 ip6h->nexthdr != NEXTHDR_UDP) {
1101 struct ipv6_opt_hdr *ehdr =
1102 (struct ipv6_opt_hdr *)(skb->data + offset);
1103
1104 /* offending pkt: 2nd byte following IPv6 hdr is 0xff */
1105 if (ehdr->hdrlen == 0xff)
1106 return true;
1107 }
1108 }
1109 return false;
1110}
1111
1112static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)
1113{
1114 return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid;
1115}
1116
1117static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb)
1118{
1119 return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
1120}
1121
1122static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
1123 struct sk_buff *skb,
1124 struct be_wrb_params
1125 *wrb_params)
1126{
1127 struct vlan_ethhdr *veh = skb_vlan_eth_hdr(skb);
1128 unsigned int eth_hdr_len;
1129 struct iphdr *ip;
1130
1131 /* For padded packets, BE HW modifies tot_len field in IP header
1132 * incorrecly when VLAN tag is inserted by HW.
1133 * For padded packets, Lancer computes incorrect checksum.
1134 */
1135 eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
1136 VLAN_ETH_HLEN : ETH_HLEN;
1137 if (skb->len <= 60 &&
1138 (lancer_chip(adapter) || BE3_chip(adapter) ||
1139 skb_vlan_tag_present(skb)) && is_ipv4_pkt(skb)) {
1140 ip = (struct iphdr *)ip_hdr(skb);
1141 if (unlikely(pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len))))
1142 goto tx_drop;
1143 }
1144
1145 /* If vlan tag is already inlined in the packet, skip HW VLAN
1146 * tagging in pvid-tagging mode
1147 */
1148 if (be_pvid_tagging_enabled(adapter) &&
1149 veh->h_vlan_proto == htons(ETH_P_8021Q))
1150 BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1151
1152 /* HW has a bug wherein it will calculate CSUM for VLAN
1153 * pkts even though it is disabled.
1154 * Manually insert VLAN in pkt.
1155 */
1156 if (skb->ip_summed != CHECKSUM_PARTIAL &&
1157 skb_vlan_tag_present(skb)) {
1158 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1159 if (unlikely(!skb))
1160 goto err;
1161 }
1162
1163 /* HW may lockup when VLAN HW tagging is requested on
1164 * certain ipv6 packets. Drop such pkts if the HW workaround to
1165 * skip HW tagging is not enabled by FW.
1166 */
1167 if (unlikely(be_ipv6_tx_stall_chk(adapter, skb) &&
1168 (adapter->pvid || adapter->qnq_vid) &&
1169 !qnq_async_evt_rcvd(adapter)))
1170 goto tx_drop;
1171
1172 /* Manual VLAN tag insertion to prevent:
1173 * ASIC lockup when the ASIC inserts VLAN tag into
1174 * certain ipv6 packets. Insert VLAN tags in driver,
1175 * and set event, completion, vlan bits accordingly
1176 * in the Tx WRB.
1177 */
1178 if (be_ipv6_tx_stall_chk(adapter, skb) &&
1179 be_vlan_tag_tx_chk(adapter, skb)) {
1180 skb = be_insert_vlan_in_pkt(adapter, skb, wrb_params);
1181 if (unlikely(!skb))
1182 goto err;
1183 }
1184
1185 return skb;
1186tx_drop:
1187 dev_kfree_skb_any(skb);
1188err:
1189 return NULL;
1190}
1191
1192static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter,
1193 struct sk_buff *skb,
1194 struct be_wrb_params *wrb_params)
1195{
1196 int err;
1197
1198 /* Lancer, SH and BE3 in SRIOV mode have a bug wherein
1199 * packets that are 32b or less may cause a transmit stall
1200 * on that port. The workaround is to pad such packets
1201 * (len <= 32 bytes) to a minimum length of 36b.
1202 */
1203 if (skb->len <= 32) {
1204 if (skb_put_padto(skb, 36))
1205 return NULL;
1206 }
1207
1208 if (BEx_chip(adapter) || lancer_chip(adapter)) {
1209 skb = be_lancer_xmit_workarounds(adapter, skb, wrb_params);
1210 if (!skb)
1211 return NULL;
1212 }
1213
1214 /* The stack can send us skbs with length greater than
1215 * what the HW can handle. Trim the extra bytes.
1216 */
1217 WARN_ON_ONCE(skb->len > BE_MAX_GSO_SIZE);
1218 err = pskb_trim(skb, BE_MAX_GSO_SIZE);
1219 WARN_ON(err);
1220
1221 return skb;
1222}
1223
1224static void be_xmit_flush(struct be_adapter *adapter, struct be_tx_obj *txo)
1225{
1226 struct be_queue_info *txq = &txo->q;
1227 struct be_eth_hdr_wrb *hdr = queue_index_node(txq, txo->last_req_hdr);
1228
1229 /* Mark the last request eventable if it hasn't been marked already */
1230 if (!(hdr->dw[2] & cpu_to_le32(TX_HDR_WRB_EVT)))
1231 hdr->dw[2] |= cpu_to_le32(TX_HDR_WRB_EVT | TX_HDR_WRB_COMPL);
1232
1233 /* compose a dummy wrb if there are odd set of wrbs to notify */
1234 if (!lancer_chip(adapter) && (txo->pend_wrb_cnt & 1)) {
1235 wrb_fill_dummy(queue_head_node(txq));
1236 queue_head_inc(txq);
1237 atomic_inc(&txq->used);
1238 txo->pend_wrb_cnt++;
1239 hdr->dw[2] &= ~cpu_to_le32(TX_HDR_WRB_NUM_MASK <<
1240 TX_HDR_WRB_NUM_SHIFT);
1241 hdr->dw[2] |= cpu_to_le32((txo->last_req_wrb_cnt + 1) <<
1242 TX_HDR_WRB_NUM_SHIFT);
1243 }
1244 be_txq_notify(adapter, txo, txo->pend_wrb_cnt);
1245 txo->pend_wrb_cnt = 0;
1246}
1247
1248/* OS2BMC related */
1249
1250#define DHCP_CLIENT_PORT 68
1251#define DHCP_SERVER_PORT 67
1252#define NET_BIOS_PORT1 137
1253#define NET_BIOS_PORT2 138
1254#define DHCPV6_RAS_PORT 547
1255
1256#define is_mc_allowed_on_bmc(adapter, eh) \
1257 (!is_multicast_filt_enabled(adapter) && \
1258 is_multicast_ether_addr(eh->h_dest) && \
1259 !is_broadcast_ether_addr(eh->h_dest))
1260
1261#define is_bc_allowed_on_bmc(adapter, eh) \
1262 (!is_broadcast_filt_enabled(adapter) && \
1263 is_broadcast_ether_addr(eh->h_dest))
1264
1265#define is_arp_allowed_on_bmc(adapter, skb) \
1266 (is_arp(skb) && is_arp_filt_enabled(adapter))
1267
1268#define is_arp(skb) (skb->protocol == htons(ETH_P_ARP))
1269
1270#define is_arp_filt_enabled(adapter) \
1271 (adapter->bmc_filt_mask & (BMC_FILT_BROADCAST_ARP))
1272
1273#define is_dhcp_client_filt_enabled(adapter) \
1274 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_CLIENT)
1275
1276#define is_dhcp_srvr_filt_enabled(adapter) \
1277 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_DHCP_SERVER)
1278
1279#define is_nbios_filt_enabled(adapter) \
1280 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST_NET_BIOS)
1281
1282#define is_ipv6_na_filt_enabled(adapter) \
1283 (adapter->bmc_filt_mask & \
1284 BMC_FILT_MULTICAST_IPV6_NEIGH_ADVER)
1285
1286#define is_ipv6_ra_filt_enabled(adapter) \
1287 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RA)
1288
1289#define is_ipv6_ras_filt_enabled(adapter) \
1290 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST_IPV6_RAS)
1291
1292#define is_broadcast_filt_enabled(adapter) \
1293 (adapter->bmc_filt_mask & BMC_FILT_BROADCAST)
1294
1295#define is_multicast_filt_enabled(adapter) \
1296 (adapter->bmc_filt_mask & BMC_FILT_MULTICAST)
1297
1298static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
1299 struct sk_buff **skb)
1300{
1301 struct ethhdr *eh = (struct ethhdr *)(*skb)->data;
1302 bool os2bmc = false;
1303
1304 if (!be_is_os2bmc_enabled(adapter))
1305 goto done;
1306
1307 if (!is_multicast_ether_addr(eh->h_dest))
1308 goto done;
1309
1310 if (is_mc_allowed_on_bmc(adapter, eh) ||
1311 is_bc_allowed_on_bmc(adapter, eh) ||
1312 is_arp_allowed_on_bmc(adapter, (*skb))) {
1313 os2bmc = true;
1314 goto done;
1315 }
1316
1317 if ((*skb)->protocol == htons(ETH_P_IPV6)) {
1318 struct ipv6hdr *hdr = ipv6_hdr((*skb));
1319 u8 nexthdr = hdr->nexthdr;
1320
1321 if (nexthdr == IPPROTO_ICMPV6) {
1322 struct icmp6hdr *icmp6 = icmp6_hdr((*skb));
1323
1324 switch (icmp6->icmp6_type) {
1325 case NDISC_ROUTER_ADVERTISEMENT:
1326 os2bmc = is_ipv6_ra_filt_enabled(adapter);
1327 goto done;
1328 case NDISC_NEIGHBOUR_ADVERTISEMENT:
1329 os2bmc = is_ipv6_na_filt_enabled(adapter);
1330 goto done;
1331 default:
1332 break;
1333 }
1334 }
1335 }
1336
1337 if (is_udp_pkt((*skb))) {
1338 struct udphdr *udp = udp_hdr((*skb));
1339
1340 switch (ntohs(udp->dest)) {
1341 case DHCP_CLIENT_PORT:
1342 os2bmc = is_dhcp_client_filt_enabled(adapter);
1343 goto done;
1344 case DHCP_SERVER_PORT:
1345 os2bmc = is_dhcp_srvr_filt_enabled(adapter);
1346 goto done;
1347 case NET_BIOS_PORT1:
1348 case NET_BIOS_PORT2:
1349 os2bmc = is_nbios_filt_enabled(adapter);
1350 goto done;
1351 case DHCPV6_RAS_PORT:
1352 os2bmc = is_ipv6_ras_filt_enabled(adapter);
1353 goto done;
1354 default:
1355 break;
1356 }
1357 }
1358done:
1359 /* For packets over a vlan, which are destined
1360 * to BMC, asic expects the vlan to be inline in the packet.
1361 */
1362 if (os2bmc)
1363 *skb = be_insert_vlan_in_pkt(adapter, *skb, NULL);
1364
1365 return os2bmc;
1366}
1367
1368static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
1369{
1370 struct be_adapter *adapter = netdev_priv(netdev);
1371 u16 q_idx = skb_get_queue_mapping(skb);
1372 struct be_tx_obj *txo = &adapter->tx_obj[q_idx];
1373 struct be_wrb_params wrb_params = { 0 };
1374 bool flush = !netdev_xmit_more();
1375 u16 wrb_cnt;
1376
1377 skb = be_xmit_workarounds(adapter, skb, &wrb_params);
1378 if (unlikely(!skb))
1379 goto drop;
1380
1381 be_get_wrb_params_from_skb(adapter, skb, &wrb_params);
1382
1383 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1384 if (unlikely(!wrb_cnt))
1385 goto drop_skb;
1386
1387 /* if os2bmc is enabled and if the pkt is destined to bmc,
1388 * enqueue the pkt a 2nd time with mgmt bit set.
1389 */
1390 if (be_send_pkt_to_bmc(adapter, &skb)) {
1391 BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);
1392 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1393 if (unlikely(!wrb_cnt))
1394 goto drop_skb;
1395 else
1396 skb_get(skb);
1397 }
1398
1399 if (be_is_txq_full(txo)) {
1400 netif_stop_subqueue(netdev, q_idx);
1401 tx_stats(txo)->tx_stops++;
1402 }
1403
1404 if (flush || __netif_subqueue_stopped(netdev, q_idx))
1405 be_xmit_flush(adapter, txo);
1406
1407 return NETDEV_TX_OK;
1408drop_skb:
1409 dev_kfree_skb_any(skb);
1410drop:
1411 tx_stats(txo)->tx_drv_drops++;
1412 /* Flush the already enqueued tx requests */
1413 if (flush && txo->pend_wrb_cnt)
1414 be_xmit_flush(adapter, txo);
1415
1416 return NETDEV_TX_OK;
1417}
1418
1419static void be_tx_timeout(struct net_device *netdev, unsigned int txqueue)
1420{
1421 struct be_adapter *adapter = netdev_priv(netdev);
1422 struct device *dev = &adapter->pdev->dev;
1423 struct be_tx_obj *txo;
1424 struct sk_buff *skb;
1425 struct tcphdr *tcphdr;
1426 struct udphdr *udphdr;
1427 u32 *entry;
1428 int status;
1429 int i, j;
1430
1431 for_all_tx_queues(adapter, txo, i) {
1432 dev_info(dev, "TXQ Dump: %d H: %d T: %d used: %d, qid: 0x%x\n",
1433 i, txo->q.head, txo->q.tail,
1434 atomic_read(&txo->q.used), txo->q.id);
1435
1436 entry = txo->q.dma_mem.va;
1437 for (j = 0; j < TX_Q_LEN * 4; j += 4) {
1438 if (entry[j] != 0 || entry[j + 1] != 0 ||
1439 entry[j + 2] != 0 || entry[j + 3] != 0) {
1440 dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",
1441 j, entry[j], entry[j + 1],
1442 entry[j + 2], entry[j + 3]);
1443 }
1444 }
1445
1446 entry = txo->cq.dma_mem.va;
1447 dev_info(dev, "TXCQ Dump: %d H: %d T: %d used: %d\n",
1448 i, txo->cq.head, txo->cq.tail,
1449 atomic_read(&txo->cq.used));
1450 for (j = 0; j < TX_CQ_LEN * 4; j += 4) {
1451 if (entry[j] != 0 || entry[j + 1] != 0 ||
1452 entry[j + 2] != 0 || entry[j + 3] != 0) {
1453 dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",
1454 j, entry[j], entry[j + 1],
1455 entry[j + 2], entry[j + 3]);
1456 }
1457 }
1458
1459 for (j = 0; j < TX_Q_LEN; j++) {
1460 if (txo->sent_skb_list[j]) {
1461 skb = txo->sent_skb_list[j];
1462 if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
1463 tcphdr = tcp_hdr(skb);
1464 dev_info(dev, "TCP source port %d\n",
1465 ntohs(tcphdr->source));
1466 dev_info(dev, "TCP dest port %d\n",
1467 ntohs(tcphdr->dest));
1468 dev_info(dev, "TCP sequence num %d\n",
1469 ntohs(tcphdr->seq));
1470 dev_info(dev, "TCP ack_seq %d\n",
1471 ntohs(tcphdr->ack_seq));
1472 } else if (ip_hdr(skb)->protocol ==
1473 IPPROTO_UDP) {
1474 udphdr = udp_hdr(skb);
1475 dev_info(dev, "UDP source port %d\n",
1476 ntohs(udphdr->source));
1477 dev_info(dev, "UDP dest port %d\n",
1478 ntohs(udphdr->dest));
1479 }
1480 dev_info(dev, "skb[%d] %p len %d proto 0x%x\n",
1481 j, skb, skb->len, skb->protocol);
1482 }
1483 }
1484 }
1485
1486 if (lancer_chip(adapter)) {
1487 dev_info(dev, "Initiating reset due to tx timeout\n");
1488 dev_info(dev, "Resetting adapter\n");
1489 status = lancer_physdev_ctrl(adapter,
1490 PHYSDEV_CONTROL_FW_RESET_MASK);
1491 if (status)
1492 dev_err(dev, "Reset failed .. Reboot server\n");
1493 }
1494}
1495
1496static inline bool be_in_all_promisc(struct be_adapter *adapter)
1497{
1498 return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
1499 BE_IF_FLAGS_ALL_PROMISCUOUS;
1500}
1501
1502static int be_set_vlan_promisc(struct be_adapter *adapter)
1503{
1504 struct device *dev = &adapter->pdev->dev;
1505 int status;
1506
1507 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)
1508 return 0;
1509
1510 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);
1511 if (!status) {
1512 dev_info(dev, "Enabled VLAN promiscuous mode\n");
1513 adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;
1514 } else {
1515 dev_err(dev, "Failed to enable VLAN promiscuous mode\n");
1516 }
1517 return status;
1518}
1519
1520static int be_clear_vlan_promisc(struct be_adapter *adapter)
1521{
1522 struct device *dev = &adapter->pdev->dev;
1523 int status;
1524
1525 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);
1526 if (!status) {
1527 dev_info(dev, "Disabling VLAN promiscuous mode\n");
1528 adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
1529 }
1530 return status;
1531}
1532
1533/*
1534 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1535 * If the user configures more, place BE in vlan promiscuous mode.
1536 */
1537static int be_vid_config(struct be_adapter *adapter)
1538{
1539 struct device *dev = &adapter->pdev->dev;
1540 u16 vids[BE_NUM_VLANS_SUPPORTED];
1541 u16 num = 0, i = 0;
1542 int status = 0;
1543
1544 /* No need to change the VLAN state if the I/F is in promiscuous */
1545 if (adapter->netdev->flags & IFF_PROMISC)
1546 return 0;
1547
1548 if (adapter->vlans_added > be_max_vlans(adapter))
1549 return be_set_vlan_promisc(adapter);
1550
1551 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
1552 status = be_clear_vlan_promisc(adapter);
1553 if (status)
1554 return status;
1555 }
1556 /* Construct VLAN Table to give to HW */
1557 for_each_set_bit(i, adapter->vids, VLAN_N_VID)
1558 vids[num++] = cpu_to_le16(i);
1559
1560 status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);
1561 if (status) {
1562 dev_err(dev, "Setting HW VLAN filtering failed\n");
1563 /* Set to VLAN promisc mode as setting VLAN filter failed */
1564 if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||
1565 addl_status(status) ==
1566 MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)
1567 return be_set_vlan_promisc(adapter);
1568 }
1569 return status;
1570}
1571
1572static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1573{
1574 struct be_adapter *adapter = netdev_priv(netdev);
1575 int status = 0;
1576
1577 mutex_lock(&adapter->rx_filter_lock);
1578
1579 /* Packets with VID 0 are always received by Lancer by default */
1580 if (lancer_chip(adapter) && vid == 0)
1581 goto done;
1582
1583 if (test_bit(vid, adapter->vids))
1584 goto done;
1585
1586 set_bit(vid, adapter->vids);
1587 adapter->vlans_added++;
1588
1589 status = be_vid_config(adapter);
1590done:
1591 mutex_unlock(&adapter->rx_filter_lock);
1592 return status;
1593}
1594
1595static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1596{
1597 struct be_adapter *adapter = netdev_priv(netdev);
1598 int status = 0;
1599
1600 mutex_lock(&adapter->rx_filter_lock);
1601
1602 /* Packets with VID 0 are always received by Lancer by default */
1603 if (lancer_chip(adapter) && vid == 0)
1604 goto done;
1605
1606 if (!test_bit(vid, adapter->vids))
1607 goto done;
1608
1609 clear_bit(vid, adapter->vids);
1610 adapter->vlans_added--;
1611
1612 status = be_vid_config(adapter);
1613done:
1614 mutex_unlock(&adapter->rx_filter_lock);
1615 return status;
1616}
1617
1618static void be_set_all_promisc(struct be_adapter *adapter)
1619{
1620 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);
1621 adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;
1622}
1623
1624static void be_set_mc_promisc(struct be_adapter *adapter)
1625{
1626 int status;
1627
1628 if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)
1629 return;
1630
1631 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);
1632 if (!status)
1633 adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;
1634}
1635
1636static void be_set_uc_promisc(struct be_adapter *adapter)
1637{
1638 int status;
1639
1640 if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS)
1641 return;
1642
1643 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, ON);
1644 if (!status)
1645 adapter->if_flags |= BE_IF_FLAGS_PROMISCUOUS;
1646}
1647
1648static void be_clear_uc_promisc(struct be_adapter *adapter)
1649{
1650 int status;
1651
1652 if (!(adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS))
1653 return;
1654
1655 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, OFF);
1656 if (!status)
1657 adapter->if_flags &= ~BE_IF_FLAGS_PROMISCUOUS;
1658}
1659
1660/* The below 2 functions are the callback args for __dev_mc_sync/dev_uc_sync().
1661 * We use a single callback function for both sync and unsync. We really don't
1662 * add/remove addresses through this callback. But, we use it to detect changes
1663 * to the uc/mc lists. The entire uc/mc list is programmed in be_set_rx_mode().
1664 */
1665static int be_uc_list_update(struct net_device *netdev,
1666 const unsigned char *addr)
1667{
1668 struct be_adapter *adapter = netdev_priv(netdev);
1669
1670 adapter->update_uc_list = true;
1671 return 0;
1672}
1673
1674static int be_mc_list_update(struct net_device *netdev,
1675 const unsigned char *addr)
1676{
1677 struct be_adapter *adapter = netdev_priv(netdev);
1678
1679 adapter->update_mc_list = true;
1680 return 0;
1681}
1682
1683static void be_set_mc_list(struct be_adapter *adapter)
1684{
1685 struct net_device *netdev = adapter->netdev;
1686 struct netdev_hw_addr *ha;
1687 bool mc_promisc = false;
1688 int status;
1689
1690 netif_addr_lock_bh(netdev);
1691 __dev_mc_sync(netdev, be_mc_list_update, be_mc_list_update);
1692
1693 if (netdev->flags & IFF_PROMISC) {
1694 adapter->update_mc_list = false;
1695 } else if (netdev->flags & IFF_ALLMULTI ||
1696 netdev_mc_count(netdev) > be_max_mc(adapter)) {
1697 /* Enable multicast promisc if num configured exceeds
1698 * what we support
1699 */
1700 mc_promisc = true;
1701 adapter->update_mc_list = false;
1702 } else if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) {
1703 /* Update mc-list unconditionally if the iface was previously
1704 * in mc-promisc mode and now is out of that mode.
1705 */
1706 adapter->update_mc_list = true;
1707 }
1708
1709 if (adapter->update_mc_list) {
1710 int i = 0;
1711
1712 /* cache the mc-list in adapter */
1713 netdev_for_each_mc_addr(ha, netdev) {
1714 ether_addr_copy(adapter->mc_list[i].mac, ha->addr);
1715 i++;
1716 }
1717 adapter->mc_count = netdev_mc_count(netdev);
1718 }
1719 netif_addr_unlock_bh(netdev);
1720
1721 if (mc_promisc) {
1722 be_set_mc_promisc(adapter);
1723 } else if (adapter->update_mc_list) {
1724 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);
1725 if (!status)
1726 adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;
1727 else
1728 be_set_mc_promisc(adapter);
1729
1730 adapter->update_mc_list = false;
1731 }
1732}
1733
1734static void be_clear_mc_list(struct be_adapter *adapter)
1735{
1736 struct net_device *netdev = adapter->netdev;
1737
1738 __dev_mc_unsync(netdev, NULL);
1739 be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, OFF);
1740 adapter->mc_count = 0;
1741}
1742
1743static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx)
1744{
1745 if (ether_addr_equal(adapter->uc_list[uc_idx].mac, adapter->dev_mac)) {
1746 adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0];
1747 return 0;
1748 }
1749
1750 return be_cmd_pmac_add(adapter, adapter->uc_list[uc_idx].mac,
1751 adapter->if_handle,
1752 &adapter->pmac_id[uc_idx + 1], 0);
1753}
1754
1755static void be_uc_mac_del(struct be_adapter *adapter, int pmac_id)
1756{
1757 if (pmac_id == adapter->pmac_id[0])
1758 return;
1759
1760 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
1761}
1762
1763static void be_set_uc_list(struct be_adapter *adapter)
1764{
1765 struct net_device *netdev = adapter->netdev;
1766 struct netdev_hw_addr *ha;
1767 bool uc_promisc = false;
1768 int curr_uc_macs = 0, i;
1769
1770 netif_addr_lock_bh(netdev);
1771 __dev_uc_sync(netdev, be_uc_list_update, be_uc_list_update);
1772
1773 if (netdev->flags & IFF_PROMISC) {
1774 adapter->update_uc_list = false;
1775 } else if (netdev_uc_count(netdev) > (be_max_uc(adapter) - 1)) {
1776 uc_promisc = true;
1777 adapter->update_uc_list = false;
1778 } else if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) {
1779 /* Update uc-list unconditionally if the iface was previously
1780 * in uc-promisc mode and now is out of that mode.
1781 */
1782 adapter->update_uc_list = true;
1783 }
1784
1785 if (adapter->update_uc_list) {
1786 /* cache the uc-list in adapter array */
1787 i = 0;
1788 netdev_for_each_uc_addr(ha, netdev) {
1789 ether_addr_copy(adapter->uc_list[i].mac, ha->addr);
1790 i++;
1791 }
1792 curr_uc_macs = netdev_uc_count(netdev);
1793 }
1794 netif_addr_unlock_bh(netdev);
1795
1796 if (uc_promisc) {
1797 be_set_uc_promisc(adapter);
1798 } else if (adapter->update_uc_list) {
1799 be_clear_uc_promisc(adapter);
1800
1801 for (i = 0; i < adapter->uc_macs; i++)
1802 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1803
1804 for (i = 0; i < curr_uc_macs; i++)
1805 be_uc_mac_add(adapter, i);
1806 adapter->uc_macs = curr_uc_macs;
1807 adapter->update_uc_list = false;
1808 }
1809}
1810
1811static void be_clear_uc_list(struct be_adapter *adapter)
1812{
1813 struct net_device *netdev = adapter->netdev;
1814 int i;
1815
1816 __dev_uc_unsync(netdev, NULL);
1817 for (i = 0; i < adapter->uc_macs; i++)
1818 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1819
1820 adapter->uc_macs = 0;
1821}
1822
1823static void __be_set_rx_mode(struct be_adapter *adapter)
1824{
1825 struct net_device *netdev = adapter->netdev;
1826
1827 mutex_lock(&adapter->rx_filter_lock);
1828
1829 if (netdev->flags & IFF_PROMISC) {
1830 if (!be_in_all_promisc(adapter))
1831 be_set_all_promisc(adapter);
1832 } else if (be_in_all_promisc(adapter)) {
1833 /* We need to re-program the vlan-list or clear
1834 * vlan-promisc mode (if needed) when the interface
1835 * comes out of promisc mode.
1836 */
1837 be_vid_config(adapter);
1838 }
1839
1840 be_set_uc_list(adapter);
1841 be_set_mc_list(adapter);
1842
1843 mutex_unlock(&adapter->rx_filter_lock);
1844}
1845
1846static void be_work_set_rx_mode(struct work_struct *work)
1847{
1848 struct be_cmd_work *cmd_work =
1849 container_of(work, struct be_cmd_work, work);
1850
1851 __be_set_rx_mode(cmd_work->adapter);
1852 kfree(cmd_work);
1853}
1854
1855static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1856{
1857 struct be_adapter *adapter = netdev_priv(netdev);
1858 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1859 int status;
1860
1861 if (!sriov_enabled(adapter))
1862 return -EPERM;
1863
1864 if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1865 return -EINVAL;
1866
1867 /* Proceed further only if user provided MAC is different
1868 * from active MAC
1869 */
1870 if (ether_addr_equal(mac, vf_cfg->mac_addr))
1871 return 0;
1872
1873 if (BEx_chip(adapter)) {
1874 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1875 vf + 1);
1876
1877 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1878 &vf_cfg->pmac_id, vf + 1);
1879 } else {
1880 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1881 vf + 1);
1882 }
1883
1884 if (status) {
1885 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",
1886 mac, vf, status);
1887 return be_cmd_status(status);
1888 }
1889
1890 ether_addr_copy(vf_cfg->mac_addr, mac);
1891
1892 return 0;
1893}
1894
1895static int be_get_vf_config(struct net_device *netdev, int vf,
1896 struct ifla_vf_info *vi)
1897{
1898 struct be_adapter *adapter = netdev_priv(netdev);
1899 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1900
1901 if (!sriov_enabled(adapter))
1902 return -EPERM;
1903
1904 if (vf >= adapter->num_vfs)
1905 return -EINVAL;
1906
1907 vi->vf = vf;
1908 vi->max_tx_rate = vf_cfg->tx_rate;
1909 vi->min_tx_rate = 0;
1910 vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1911 vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1912 memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1913 vi->linkstate = adapter->vf_cfg[vf].plink_tracking;
1914 vi->spoofchk = adapter->vf_cfg[vf].spoofchk;
1915
1916 return 0;
1917}
1918
1919static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)
1920{
1921 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1922 u16 vids[BE_NUM_VLANS_SUPPORTED];
1923 int vf_if_id = vf_cfg->if_handle;
1924 int status;
1925
1926 /* Enable Transparent VLAN Tagging */
1927 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);
1928 if (status)
1929 return status;
1930
1931 /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */
1932 vids[0] = 0;
1933 status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);
1934 if (!status)
1935 dev_info(&adapter->pdev->dev,
1936 "Cleared guest VLANs on VF%d", vf);
1937
1938 /* After TVT is enabled, disallow VFs to program VLAN filters */
1939 if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {
1940 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &
1941 ~BE_PRIV_FILTMGMT, vf + 1);
1942 if (!status)
1943 vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;
1944 }
1945 return 0;
1946}
1947
1948static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)
1949{
1950 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1951 struct device *dev = &adapter->pdev->dev;
1952 int status;
1953
1954 /* Reset Transparent VLAN Tagging. */
1955 status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,
1956 vf_cfg->if_handle, 0, 0);
1957 if (status)
1958 return status;
1959
1960 /* Allow VFs to program VLAN filtering */
1961 if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
1962 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |
1963 BE_PRIV_FILTMGMT, vf + 1);
1964 if (!status) {
1965 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
1966 dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);
1967 }
1968 }
1969
1970 dev_info(dev,
1971 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");
1972 return 0;
1973}
1974
1975static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
1976 __be16 vlan_proto)
1977{
1978 struct be_adapter *adapter = netdev_priv(netdev);
1979 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1980 int status;
1981
1982 if (!sriov_enabled(adapter))
1983 return -EPERM;
1984
1985 if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1986 return -EINVAL;
1987
1988 if (vlan_proto != htons(ETH_P_8021Q))
1989 return -EPROTONOSUPPORT;
1990
1991 if (vlan || qos) {
1992 vlan |= qos << VLAN_PRIO_SHIFT;
1993 status = be_set_vf_tvt(adapter, vf, vlan);
1994 } else {
1995 status = be_clear_vf_tvt(adapter, vf);
1996 }
1997
1998 if (status) {
1999 dev_err(&adapter->pdev->dev,
2000 "VLAN %d config on VF %d failed : %#x\n", vlan, vf,
2001 status);
2002 return be_cmd_status(status);
2003 }
2004
2005 vf_cfg->vlan_tag = vlan;
2006 return 0;
2007}
2008
2009static int be_set_vf_tx_rate(struct net_device *netdev, int vf,
2010 int min_tx_rate, int max_tx_rate)
2011{
2012 struct be_adapter *adapter = netdev_priv(netdev);
2013 struct device *dev = &adapter->pdev->dev;
2014 int percent_rate, status = 0;
2015 u16 link_speed = 0;
2016 u8 link_status;
2017
2018 if (!sriov_enabled(adapter))
2019 return -EPERM;
2020
2021 if (vf >= adapter->num_vfs)
2022 return -EINVAL;
2023
2024 if (min_tx_rate)
2025 return -EINVAL;
2026
2027 if (!max_tx_rate)
2028 goto config_qos;
2029
2030 status = be_cmd_link_status_query(adapter, &link_speed,
2031 &link_status, 0);
2032 if (status)
2033 goto err;
2034
2035 if (!link_status) {
2036 dev_err(dev, "TX-rate setting not allowed when link is down\n");
2037 status = -ENETDOWN;
2038 goto err;
2039 }
2040
2041 if (max_tx_rate < 100 || max_tx_rate > link_speed) {
2042 dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",
2043 link_speed);
2044 status = -EINVAL;
2045 goto err;
2046 }
2047
2048 /* On Skyhawk the QOS setting must be done only as a % value */
2049 percent_rate = link_speed / 100;
2050 if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {
2051 dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",
2052 percent_rate);
2053 status = -EINVAL;
2054 goto err;
2055 }
2056
2057config_qos:
2058 status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);
2059 if (status)
2060 goto err;
2061
2062 adapter->vf_cfg[vf].tx_rate = max_tx_rate;
2063 return 0;
2064
2065err:
2066 dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",
2067 max_tx_rate, vf);
2068 return be_cmd_status(status);
2069}
2070
2071static int be_set_vf_link_state(struct net_device *netdev, int vf,
2072 int link_state)
2073{
2074 struct be_adapter *adapter = netdev_priv(netdev);
2075 int status;
2076
2077 if (!sriov_enabled(adapter))
2078 return -EPERM;
2079
2080 if (vf >= adapter->num_vfs)
2081 return -EINVAL;
2082
2083 status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);
2084 if (status) {
2085 dev_err(&adapter->pdev->dev,
2086 "Link state change on VF %d failed: %#x\n", vf, status);
2087 return be_cmd_status(status);
2088 }
2089
2090 adapter->vf_cfg[vf].plink_tracking = link_state;
2091
2092 return 0;
2093}
2094
2095static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
2096{
2097 struct be_adapter *adapter = netdev_priv(netdev);
2098 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
2099 u8 spoofchk;
2100 int status;
2101
2102 if (!sriov_enabled(adapter))
2103 return -EPERM;
2104
2105 if (vf >= adapter->num_vfs)
2106 return -EINVAL;
2107
2108 if (BEx_chip(adapter))
2109 return -EOPNOTSUPP;
2110
2111 if (enable == vf_cfg->spoofchk)
2112 return 0;
2113
2114 spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;
2115
2116 status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,
2117 0, spoofchk);
2118 if (status) {
2119 dev_err(&adapter->pdev->dev,
2120 "Spoofchk change on VF %d failed: %#x\n", vf, status);
2121 return be_cmd_status(status);
2122 }
2123
2124 vf_cfg->spoofchk = enable;
2125 return 0;
2126}
2127
2128static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
2129 ulong now)
2130{
2131 aic->rx_pkts_prev = rx_pkts;
2132 aic->tx_reqs_prev = tx_pkts;
2133 aic->jiffies = now;
2134}
2135
2136static int be_get_new_eqd(struct be_eq_obj *eqo)
2137{
2138 struct be_adapter *adapter = eqo->adapter;
2139 int eqd, start;
2140 struct be_aic_obj *aic;
2141 struct be_rx_obj *rxo;
2142 struct be_tx_obj *txo;
2143 u64 rx_pkts = 0, tx_pkts = 0;
2144 ulong now;
2145 u32 pps, delta;
2146 int i;
2147
2148 aic = &adapter->aic_obj[eqo->idx];
2149 if (!adapter->aic_enabled) {
2150 if (aic->jiffies)
2151 aic->jiffies = 0;
2152 eqd = aic->et_eqd;
2153 return eqd;
2154 }
2155
2156 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
2157 do {
2158 start = u64_stats_fetch_begin(&rxo->stats.sync);
2159 rx_pkts += rxo->stats.rx_pkts;
2160 } while (u64_stats_fetch_retry(&rxo->stats.sync, start));
2161 }
2162
2163 for_all_tx_queues_on_eq(adapter, eqo, txo, i) {
2164 do {
2165 start = u64_stats_fetch_begin(&txo->stats.sync);
2166 tx_pkts += txo->stats.tx_reqs;
2167 } while (u64_stats_fetch_retry(&txo->stats.sync, start));
2168 }
2169
2170 /* Skip, if wrapped around or first calculation */
2171 now = jiffies;
2172 if (!aic->jiffies || time_before(now, aic->jiffies) ||
2173 rx_pkts < aic->rx_pkts_prev ||
2174 tx_pkts < aic->tx_reqs_prev) {
2175 be_aic_update(aic, rx_pkts, tx_pkts, now);
2176 return aic->prev_eqd;
2177 }
2178
2179 delta = jiffies_to_msecs(now - aic->jiffies);
2180 if (delta == 0)
2181 return aic->prev_eqd;
2182
2183 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
2184 (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
2185 eqd = (pps / 15000) << 2;
2186
2187 if (eqd < 8)
2188 eqd = 0;
2189 eqd = min_t(u32, eqd, aic->max_eqd);
2190 eqd = max_t(u32, eqd, aic->min_eqd);
2191
2192 be_aic_update(aic, rx_pkts, tx_pkts, now);
2193
2194 return eqd;
2195}
2196
2197/* For Skyhawk-R only */
2198static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)
2199{
2200 struct be_adapter *adapter = eqo->adapter;
2201 struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];
2202 ulong now = jiffies;
2203 int eqd;
2204 u32 mult_enc;
2205
2206 if (!adapter->aic_enabled)
2207 return 0;
2208
2209 if (jiffies_to_msecs(now - aic->jiffies) < 1)
2210 eqd = aic->prev_eqd;
2211 else
2212 eqd = be_get_new_eqd(eqo);
2213
2214 if (eqd > 100)
2215 mult_enc = R2I_DLY_ENC_1;
2216 else if (eqd > 60)
2217 mult_enc = R2I_DLY_ENC_2;
2218 else if (eqd > 20)
2219 mult_enc = R2I_DLY_ENC_3;
2220 else
2221 mult_enc = R2I_DLY_ENC_0;
2222
2223 aic->prev_eqd = eqd;
2224
2225 return mult_enc;
2226}
2227
2228void be_eqd_update(struct be_adapter *adapter, bool force_update)
2229{
2230 struct be_set_eqd set_eqd[MAX_EVT_QS];
2231 struct be_aic_obj *aic;
2232 struct be_eq_obj *eqo;
2233 int i, num = 0, eqd;
2234
2235 for_all_evt_queues(adapter, eqo, i) {
2236 aic = &adapter->aic_obj[eqo->idx];
2237 eqd = be_get_new_eqd(eqo);
2238 if (force_update || eqd != aic->prev_eqd) {
2239 set_eqd[num].delay_multiplier = (eqd * 65)/100;
2240 set_eqd[num].eq_id = eqo->q.id;
2241 aic->prev_eqd = eqd;
2242 num++;
2243 }
2244 }
2245
2246 if (num)
2247 be_cmd_modify_eqd(adapter, set_eqd, num);
2248}
2249
2250static void be_rx_stats_update(struct be_rx_obj *rxo,
2251 struct be_rx_compl_info *rxcp)
2252{
2253 struct be_rx_stats *stats = rx_stats(rxo);
2254
2255 u64_stats_update_begin(&stats->sync);
2256 stats->rx_compl++;
2257 stats->rx_bytes += rxcp->pkt_size;
2258 stats->rx_pkts++;
2259 if (rxcp->tunneled)
2260 stats->rx_vxlan_offload_pkts++;
2261 if (rxcp->pkt_type == BE_MULTICAST_PACKET)
2262 stats->rx_mcast_pkts++;
2263 if (rxcp->err)
2264 stats->rx_compl_err++;
2265 u64_stats_update_end(&stats->sync);
2266}
2267
2268static inline bool csum_passed(struct be_rx_compl_info *rxcp)
2269{
2270 /* L4 checksum is not reliable for non TCP/UDP packets.
2271 * Also ignore ipcksm for ipv6 pkts
2272 */
2273 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
2274 (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
2275}
2276
2277static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
2278{
2279 struct be_adapter *adapter = rxo->adapter;
2280 struct be_rx_page_info *rx_page_info;
2281 struct be_queue_info *rxq = &rxo->q;
2282 u32 frag_idx = rxq->tail;
2283
2284 rx_page_info = &rxo->page_info_tbl[frag_idx];
2285 BUG_ON(!rx_page_info->page);
2286
2287 if (rx_page_info->last_frag) {
2288 dma_unmap_page(&adapter->pdev->dev,
2289 dma_unmap_addr(rx_page_info, bus),
2290 adapter->big_page_size, DMA_FROM_DEVICE);
2291 rx_page_info->last_frag = false;
2292 } else {
2293 dma_sync_single_for_cpu(&adapter->pdev->dev,
2294 dma_unmap_addr(rx_page_info, bus),
2295 rx_frag_size, DMA_FROM_DEVICE);
2296 }
2297
2298 queue_tail_inc(rxq);
2299 atomic_dec(&rxq->used);
2300 return rx_page_info;
2301}
2302
2303/* Throwaway the data in the Rx completion */
2304static void be_rx_compl_discard(struct be_rx_obj *rxo,
2305 struct be_rx_compl_info *rxcp)
2306{
2307 struct be_rx_page_info *page_info;
2308 u16 i, num_rcvd = rxcp->num_rcvd;
2309
2310 for (i = 0; i < num_rcvd; i++) {
2311 page_info = get_rx_page_info(rxo);
2312 put_page(page_info->page);
2313 memset(page_info, 0, sizeof(*page_info));
2314 }
2315}
2316
2317/*
2318 * skb_fill_rx_data forms a complete skb for an ether frame
2319 * indicated by rxcp.
2320 */
2321static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
2322 struct be_rx_compl_info *rxcp)
2323{
2324 struct be_rx_page_info *page_info;
2325 u16 i, j;
2326 u16 hdr_len, curr_frag_len, remaining;
2327 u8 *start;
2328
2329 page_info = get_rx_page_info(rxo);
2330 start = page_address(page_info->page) + page_info->page_offset;
2331 prefetch(start);
2332
2333 /* Copy data in the first descriptor of this completion */
2334 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
2335
2336 skb->len = curr_frag_len;
2337 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
2338 memcpy(skb->data, start, curr_frag_len);
2339 /* Complete packet has now been moved to data */
2340 put_page(page_info->page);
2341 skb->data_len = 0;
2342 skb->tail += curr_frag_len;
2343 } else {
2344 hdr_len = ETH_HLEN;
2345 memcpy(skb->data, start, hdr_len);
2346 skb_shinfo(skb)->nr_frags = 1;
2347 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[0],
2348 page_info->page,
2349 page_info->page_offset + hdr_len,
2350 curr_frag_len - hdr_len);
2351 skb->data_len = curr_frag_len - hdr_len;
2352 skb->truesize += rx_frag_size;
2353 skb->tail += hdr_len;
2354 }
2355 page_info->page = NULL;
2356
2357 if (rxcp->pkt_size <= rx_frag_size) {
2358 BUG_ON(rxcp->num_rcvd != 1);
2359 return;
2360 }
2361
2362 /* More frags present for this completion */
2363 remaining = rxcp->pkt_size - curr_frag_len;
2364 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
2365 page_info = get_rx_page_info(rxo);
2366 curr_frag_len = min(remaining, rx_frag_size);
2367
2368 /* Coalesce all frags from the same physical page in one slot */
2369 if (page_info->page_offset == 0) {
2370 /* Fresh page */
2371 j++;
2372 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[j],
2373 page_info->page,
2374 page_info->page_offset,
2375 curr_frag_len);
2376 skb_shinfo(skb)->nr_frags++;
2377 } else {
2378 put_page(page_info->page);
2379 skb_frag_size_add(&skb_shinfo(skb)->frags[j],
2380 curr_frag_len);
2381 }
2382
2383 skb->len += curr_frag_len;
2384 skb->data_len += curr_frag_len;
2385 skb->truesize += rx_frag_size;
2386 remaining -= curr_frag_len;
2387 page_info->page = NULL;
2388 }
2389 BUG_ON(j > MAX_SKB_FRAGS);
2390}
2391
2392/* Process the RX completion indicated by rxcp when GRO is disabled */
2393static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
2394 struct be_rx_compl_info *rxcp)
2395{
2396 struct be_adapter *adapter = rxo->adapter;
2397 struct net_device *netdev = adapter->netdev;
2398 struct sk_buff *skb;
2399
2400 skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
2401 if (unlikely(!skb)) {
2402 rx_stats(rxo)->rx_drops_no_skbs++;
2403 be_rx_compl_discard(rxo, rxcp);
2404 return;
2405 }
2406
2407 skb_fill_rx_data(rxo, skb, rxcp);
2408
2409 if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
2410 skb->ip_summed = CHECKSUM_UNNECESSARY;
2411 else
2412 skb_checksum_none_assert(skb);
2413
2414 skb->protocol = eth_type_trans(skb, netdev);
2415 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2416 if (netdev->features & NETIF_F_RXHASH)
2417 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2418
2419 skb->csum_level = rxcp->tunneled;
2420 skb_mark_napi_id(skb, napi);
2421
2422 if (rxcp->vlanf)
2423 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2424
2425 netif_receive_skb(skb);
2426}
2427
2428/* Process the RX completion indicated by rxcp when GRO is enabled */
2429static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
2430 struct napi_struct *napi,
2431 struct be_rx_compl_info *rxcp)
2432{
2433 struct be_adapter *adapter = rxo->adapter;
2434 struct be_rx_page_info *page_info;
2435 struct sk_buff *skb = NULL;
2436 u16 remaining, curr_frag_len;
2437 u16 i, j;
2438
2439 skb = napi_get_frags(napi);
2440 if (!skb) {
2441 be_rx_compl_discard(rxo, rxcp);
2442 return;
2443 }
2444
2445 remaining = rxcp->pkt_size;
2446 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
2447 page_info = get_rx_page_info(rxo);
2448
2449 curr_frag_len = min(remaining, rx_frag_size);
2450
2451 /* Coalesce all frags from the same physical page in one slot */
2452 if (i == 0 || page_info->page_offset == 0) {
2453 /* First frag or Fresh page */
2454 j++;
2455 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[j],
2456 page_info->page,
2457 page_info->page_offset,
2458 curr_frag_len);
2459 } else {
2460 put_page(page_info->page);
2461 skb_frag_size_add(&skb_shinfo(skb)->frags[j],
2462 curr_frag_len);
2463 }
2464
2465 skb->truesize += rx_frag_size;
2466 remaining -= curr_frag_len;
2467 memset(page_info, 0, sizeof(*page_info));
2468 }
2469 BUG_ON(j > MAX_SKB_FRAGS);
2470
2471 skb_shinfo(skb)->nr_frags = j + 1;
2472 skb->len = rxcp->pkt_size;
2473 skb->data_len = rxcp->pkt_size;
2474 skb->ip_summed = CHECKSUM_UNNECESSARY;
2475 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2476 if (adapter->netdev->features & NETIF_F_RXHASH)
2477 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2478
2479 skb->csum_level = rxcp->tunneled;
2480
2481 if (rxcp->vlanf)
2482 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2483
2484 napi_gro_frags(napi);
2485}
2486
2487static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
2488 struct be_rx_compl_info *rxcp)
2489{
2490 rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);
2491 rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);
2492 rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);
2493 rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);
2494 rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);
2495 rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);
2496 rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);
2497 rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);
2498 rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);
2499 rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);
2500 rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);
2501 if (rxcp->vlanf) {
2502 rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);
2503 rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);
2504 }
2505 rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);
2506 rxcp->tunneled =
2507 GET_RX_COMPL_V1_BITS(tunneled, compl);
2508}
2509
2510static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
2511 struct be_rx_compl_info *rxcp)
2512{
2513 rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);
2514 rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);
2515 rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);
2516 rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);
2517 rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);
2518 rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);
2519 rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);
2520 rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);
2521 rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);
2522 rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);
2523 rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);
2524 if (rxcp->vlanf) {
2525 rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);
2526 rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);
2527 }
2528 rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);
2529 rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);
2530}
2531
2532static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
2533{
2534 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
2535 struct be_rx_compl_info *rxcp = &rxo->rxcp;
2536 struct be_adapter *adapter = rxo->adapter;
2537
2538 /* For checking the valid bit it is Ok to use either definition as the
2539 * valid bit is at the same position in both v0 and v1 Rx compl */
2540 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
2541 return NULL;
2542
2543 rmb();
2544 be_dws_le_to_cpu(compl, sizeof(*compl));
2545
2546 if (adapter->be3_native)
2547 be_parse_rx_compl_v1(compl, rxcp);
2548 else
2549 be_parse_rx_compl_v0(compl, rxcp);
2550
2551 if (rxcp->ip_frag)
2552 rxcp->l4_csum = 0;
2553
2554 if (rxcp->vlanf) {
2555 /* In QNQ modes, if qnq bit is not set, then the packet was
2556 * tagged only with the transparent outer vlan-tag and must
2557 * not be treated as a vlan packet by host
2558 */
2559 if (be_is_qnq_mode(adapter) && !rxcp->qnq)
2560 rxcp->vlanf = 0;
2561
2562 if (!lancer_chip(adapter))
2563 rxcp->vlan_tag = swab16(rxcp->vlan_tag);
2564
2565 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
2566 !test_bit(rxcp->vlan_tag, adapter->vids))
2567 rxcp->vlanf = 0;
2568 }
2569
2570 /* As the compl has been parsed, reset it; we wont touch it again */
2571 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
2572
2573 queue_tail_inc(&rxo->cq);
2574 return rxcp;
2575}
2576
2577static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
2578{
2579 u32 order = get_order(size);
2580
2581 if (order > 0)
2582 gfp |= __GFP_COMP;
2583 return alloc_pages(gfp, order);
2584}
2585
2586/*
2587 * Allocate a page, split it to fragments of size rx_frag_size and post as
2588 * receive buffers to BE
2589 */
2590static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
2591{
2592 struct be_adapter *adapter = rxo->adapter;
2593 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
2594 struct be_queue_info *rxq = &rxo->q;
2595 struct page *pagep = NULL;
2596 struct device *dev = &adapter->pdev->dev;
2597 struct be_eth_rx_d *rxd;
2598 u64 page_dmaaddr = 0, frag_dmaaddr;
2599 u32 posted, page_offset = 0, notify = 0;
2600
2601 page_info = &rxo->page_info_tbl[rxq->head];
2602 for (posted = 0; posted < frags_needed && !page_info->page; posted++) {
2603 if (!pagep) {
2604 pagep = be_alloc_pages(adapter->big_page_size, gfp);
2605 if (unlikely(!pagep)) {
2606 rx_stats(rxo)->rx_post_fail++;
2607 break;
2608 }
2609 page_dmaaddr = dma_map_page(dev, pagep, 0,
2610 adapter->big_page_size,
2611 DMA_FROM_DEVICE);
2612 if (dma_mapping_error(dev, page_dmaaddr)) {
2613 put_page(pagep);
2614 pagep = NULL;
2615 adapter->drv_stats.dma_map_errors++;
2616 break;
2617 }
2618 page_offset = 0;
2619 } else {
2620 get_page(pagep);
2621 page_offset += rx_frag_size;
2622 }
2623 page_info->page_offset = page_offset;
2624 page_info->page = pagep;
2625
2626 rxd = queue_head_node(rxq);
2627 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
2628 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
2629 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
2630
2631 /* Any space left in the current big page for another frag? */
2632 if ((page_offset + rx_frag_size + rx_frag_size) >
2633 adapter->big_page_size) {
2634 pagep = NULL;
2635 page_info->last_frag = true;
2636 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
2637 } else {
2638 dma_unmap_addr_set(page_info, bus, frag_dmaaddr);
2639 }
2640
2641 prev_page_info = page_info;
2642 queue_head_inc(rxq);
2643 page_info = &rxo->page_info_tbl[rxq->head];
2644 }
2645
2646 /* Mark the last frag of a page when we break out of the above loop
2647 * with no more slots available in the RXQ
2648 */
2649 if (pagep) {
2650 prev_page_info->last_frag = true;
2651 dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);
2652 }
2653
2654 if (posted) {
2655 atomic_add(posted, &rxq->used);
2656 if (rxo->rx_post_starved)
2657 rxo->rx_post_starved = false;
2658 do {
2659 notify = min(MAX_NUM_POST_ERX_DB, posted);
2660 be_rxq_notify(adapter, rxq->id, notify);
2661 posted -= notify;
2662 } while (posted);
2663 } else if (atomic_read(&rxq->used) == 0) {
2664 /* Let be_worker replenish when memory is available */
2665 rxo->rx_post_starved = true;
2666 }
2667}
2668
2669static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)
2670{
2671 switch (status) {
2672 case BE_TX_COMP_HDR_PARSE_ERR:
2673 tx_stats(txo)->tx_hdr_parse_err++;
2674 break;
2675 case BE_TX_COMP_NDMA_ERR:
2676 tx_stats(txo)->tx_dma_err++;
2677 break;
2678 case BE_TX_COMP_ACL_ERR:
2679 tx_stats(txo)->tx_spoof_check_err++;
2680 break;
2681 }
2682}
2683
2684static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)
2685{
2686 switch (status) {
2687 case LANCER_TX_COMP_LSO_ERR:
2688 tx_stats(txo)->tx_tso_err++;
2689 break;
2690 case LANCER_TX_COMP_HSW_DROP_MAC_ERR:
2691 case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:
2692 tx_stats(txo)->tx_spoof_check_err++;
2693 break;
2694 case LANCER_TX_COMP_QINQ_ERR:
2695 tx_stats(txo)->tx_qinq_err++;
2696 break;
2697 case LANCER_TX_COMP_PARITY_ERR:
2698 tx_stats(txo)->tx_internal_parity_err++;
2699 break;
2700 case LANCER_TX_COMP_DMA_ERR:
2701 tx_stats(txo)->tx_dma_err++;
2702 break;
2703 case LANCER_TX_COMP_SGE_ERR:
2704 tx_stats(txo)->tx_sge_err++;
2705 break;
2706 }
2707}
2708
2709static struct be_tx_compl_info *be_tx_compl_get(struct be_adapter *adapter,
2710 struct be_tx_obj *txo)
2711{
2712 struct be_queue_info *tx_cq = &txo->cq;
2713 struct be_tx_compl_info *txcp = &txo->txcp;
2714 struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);
2715
2716 if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
2717 return NULL;
2718
2719 /* Ensure load ordering of valid bit dword and other dwords below */
2720 rmb();
2721 be_dws_le_to_cpu(compl, sizeof(*compl));
2722
2723 txcp->status = GET_TX_COMPL_BITS(status, compl);
2724 txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);
2725
2726 if (txcp->status) {
2727 if (lancer_chip(adapter)) {
2728 lancer_update_tx_err(txo, txcp->status);
2729 /* Reset the adapter incase of TSO,
2730 * SGE or Parity error
2731 */
2732 if (txcp->status == LANCER_TX_COMP_LSO_ERR ||
2733 txcp->status == LANCER_TX_COMP_PARITY_ERR ||
2734 txcp->status == LANCER_TX_COMP_SGE_ERR)
2735 be_set_error(adapter, BE_ERROR_TX);
2736 } else {
2737 be_update_tx_err(txo, txcp->status);
2738 }
2739 }
2740
2741 if (be_check_error(adapter, BE_ERROR_TX))
2742 return NULL;
2743
2744 compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
2745 queue_tail_inc(tx_cq);
2746 return txcp;
2747}
2748
2749static u16 be_tx_compl_process(struct be_adapter *adapter,
2750 struct be_tx_obj *txo, u16 last_index)
2751{
2752 struct sk_buff **sent_skbs = txo->sent_skb_list;
2753 struct be_queue_info *txq = &txo->q;
2754 struct sk_buff *skb = NULL;
2755 bool unmap_skb_hdr = false;
2756 struct be_eth_wrb *wrb;
2757 u16 num_wrbs = 0;
2758 u32 frag_index;
2759
2760 do {
2761 if (sent_skbs[txq->tail]) {
2762 /* Free skb from prev req */
2763 if (skb)
2764 dev_consume_skb_any(skb);
2765 skb = sent_skbs[txq->tail];
2766 sent_skbs[txq->tail] = NULL;
2767 queue_tail_inc(txq); /* skip hdr wrb */
2768 num_wrbs++;
2769 unmap_skb_hdr = true;
2770 }
2771 wrb = queue_tail_node(txq);
2772 frag_index = txq->tail;
2773 unmap_tx_frag(&adapter->pdev->dev, wrb,
2774 (unmap_skb_hdr && skb_headlen(skb)));
2775 unmap_skb_hdr = false;
2776 queue_tail_inc(txq);
2777 num_wrbs++;
2778 } while (frag_index != last_index);
2779 dev_consume_skb_any(skb);
2780
2781 return num_wrbs;
2782}
2783
2784/* Return the number of events in the event queue */
2785static inline int events_get(struct be_eq_obj *eqo)
2786{
2787 struct be_eq_entry *eqe;
2788 int num = 0;
2789
2790 do {
2791 eqe = queue_tail_node(&eqo->q);
2792 if (eqe->evt == 0)
2793 break;
2794
2795 rmb();
2796 eqe->evt = 0;
2797 num++;
2798 queue_tail_inc(&eqo->q);
2799 } while (true);
2800
2801 return num;
2802}
2803
2804/* Leaves the EQ is disarmed state */
2805static void be_eq_clean(struct be_eq_obj *eqo)
2806{
2807 int num = events_get(eqo);
2808
2809 be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
2810}
2811
2812/* Free posted rx buffers that were not used */
2813static void be_rxq_clean(struct be_rx_obj *rxo)
2814{
2815 struct be_queue_info *rxq = &rxo->q;
2816 struct be_rx_page_info *page_info;
2817
2818 while (atomic_read(&rxq->used) > 0) {
2819 page_info = get_rx_page_info(rxo);
2820 put_page(page_info->page);
2821 memset(page_info, 0, sizeof(*page_info));
2822 }
2823 BUG_ON(atomic_read(&rxq->used));
2824 rxq->tail = 0;
2825 rxq->head = 0;
2826}
2827
2828static void be_rx_cq_clean(struct be_rx_obj *rxo)
2829{
2830 struct be_queue_info *rx_cq = &rxo->cq;
2831 struct be_rx_compl_info *rxcp;
2832 struct be_adapter *adapter = rxo->adapter;
2833 int flush_wait = 0;
2834
2835 /* Consume pending rx completions.
2836 * Wait for the flush completion (identified by zero num_rcvd)
2837 * to arrive. Notify CQ even when there are no more CQ entries
2838 * for HW to flush partially coalesced CQ entries.
2839 * In Lancer, there is no need to wait for flush compl.
2840 */
2841 for (;;) {
2842 rxcp = be_rx_compl_get(rxo);
2843 if (!rxcp) {
2844 if (lancer_chip(adapter))
2845 break;
2846
2847 if (flush_wait++ > 50 ||
2848 be_check_error(adapter,
2849 BE_ERROR_HW)) {
2850 dev_warn(&adapter->pdev->dev,
2851 "did not receive flush compl\n");
2852 break;
2853 }
2854 be_cq_notify(adapter, rx_cq->id, true, 0);
2855 mdelay(1);
2856 } else {
2857 be_rx_compl_discard(rxo, rxcp);
2858 be_cq_notify(adapter, rx_cq->id, false, 1);
2859 if (rxcp->num_rcvd == 0)
2860 break;
2861 }
2862 }
2863
2864 /* After cleanup, leave the CQ in unarmed state */
2865 be_cq_notify(adapter, rx_cq->id, false, 0);
2866}
2867
2868static void be_tx_compl_clean(struct be_adapter *adapter)
2869{
2870 struct device *dev = &adapter->pdev->dev;
2871 u16 cmpl = 0, timeo = 0, num_wrbs = 0;
2872 struct be_tx_compl_info *txcp;
2873 struct be_queue_info *txq;
2874 u32 end_idx, notified_idx;
2875 struct be_tx_obj *txo;
2876 int i, pending_txqs;
2877
2878 /* Stop polling for compls when HW has been silent for 10ms */
2879 do {
2880 pending_txqs = adapter->num_tx_qs;
2881
2882 for_all_tx_queues(adapter, txo, i) {
2883 cmpl = 0;
2884 num_wrbs = 0;
2885 txq = &txo->q;
2886 while ((txcp = be_tx_compl_get(adapter, txo))) {
2887 num_wrbs +=
2888 be_tx_compl_process(adapter, txo,
2889 txcp->end_index);
2890 cmpl++;
2891 }
2892 if (cmpl) {
2893 be_cq_notify(adapter, txo->cq.id, false, cmpl);
2894 atomic_sub(num_wrbs, &txq->used);
2895 timeo = 0;
2896 }
2897 if (!be_is_tx_compl_pending(txo))
2898 pending_txqs--;
2899 }
2900
2901 if (pending_txqs == 0 || ++timeo > 10 ||
2902 be_check_error(adapter, BE_ERROR_HW))
2903 break;
2904
2905 mdelay(1);
2906 } while (true);
2907
2908 /* Free enqueued TX that was never notified to HW */
2909 for_all_tx_queues(adapter, txo, i) {
2910 txq = &txo->q;
2911
2912 if (atomic_read(&txq->used)) {
2913 dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",
2914 i, atomic_read(&txq->used));
2915 notified_idx = txq->tail;
2916 end_idx = txq->tail;
2917 index_adv(&end_idx, atomic_read(&txq->used) - 1,
2918 txq->len);
2919 /* Use the tx-compl process logic to handle requests
2920 * that were not sent to the HW.
2921 */
2922 num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2923 atomic_sub(num_wrbs, &txq->used);
2924 BUG_ON(atomic_read(&txq->used));
2925 txo->pend_wrb_cnt = 0;
2926 /* Since hw was never notified of these requests,
2927 * reset TXQ indices
2928 */
2929 txq->head = notified_idx;
2930 txq->tail = notified_idx;
2931 }
2932 }
2933}
2934
2935static void be_evt_queues_destroy(struct be_adapter *adapter)
2936{
2937 struct be_eq_obj *eqo;
2938 int i;
2939
2940 for_all_evt_queues(adapter, eqo, i) {
2941 if (eqo->q.created) {
2942 be_eq_clean(eqo);
2943 be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2944 netif_napi_del(&eqo->napi);
2945 free_cpumask_var(eqo->affinity_mask);
2946 }
2947 be_queue_free(adapter, &eqo->q);
2948 }
2949}
2950
2951static int be_evt_queues_create(struct be_adapter *adapter)
2952{
2953 struct be_queue_info *eq;
2954 struct be_eq_obj *eqo;
2955 struct be_aic_obj *aic;
2956 int i, rc;
2957
2958 /* need enough EQs to service both RX and TX queues */
2959 adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2960 max(adapter->cfg_num_rx_irqs,
2961 adapter->cfg_num_tx_irqs));
2962
2963 adapter->aic_enabled = true;
2964
2965 for_all_evt_queues(adapter, eqo, i) {
2966 int numa_node = dev_to_node(&adapter->pdev->dev);
2967
2968 aic = &adapter->aic_obj[i];
2969 eqo->adapter = adapter;
2970 eqo->idx = i;
2971 aic->max_eqd = BE_MAX_EQD;
2972
2973 eq = &eqo->q;
2974 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2975 sizeof(struct be_eq_entry));
2976 if (rc)
2977 return rc;
2978
2979 rc = be_cmd_eq_create(adapter, eqo);
2980 if (rc)
2981 return rc;
2982
2983 if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
2984 return -ENOMEM;
2985 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
2986 eqo->affinity_mask);
2987 netif_napi_add(adapter->netdev, &eqo->napi, be_poll);
2988 }
2989 return 0;
2990}
2991
2992static void be_mcc_queues_destroy(struct be_adapter *adapter)
2993{
2994 struct be_queue_info *q;
2995
2996 q = &adapter->mcc_obj.q;
2997 if (q->created)
2998 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
2999 be_queue_free(adapter, q);
3000
3001 q = &adapter->mcc_obj.cq;
3002 if (q->created)
3003 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3004 be_queue_free(adapter, q);
3005}
3006
3007/* Must be called only after TX qs are created as MCC shares TX EQ */
3008static int be_mcc_queues_create(struct be_adapter *adapter)
3009{
3010 struct be_queue_info *q, *cq;
3011
3012 cq = &adapter->mcc_obj.cq;
3013 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
3014 sizeof(struct be_mcc_compl)))
3015 goto err;
3016
3017 /* Use the default EQ for MCC completions */
3018 if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
3019 goto mcc_cq_free;
3020
3021 q = &adapter->mcc_obj.q;
3022 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3023 goto mcc_cq_destroy;
3024
3025 if (be_cmd_mccq_create(adapter, q, cq))
3026 goto mcc_q_free;
3027
3028 return 0;
3029
3030mcc_q_free:
3031 be_queue_free(adapter, q);
3032mcc_cq_destroy:
3033 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
3034mcc_cq_free:
3035 be_queue_free(adapter, cq);
3036err:
3037 return -1;
3038}
3039
3040static void be_tx_queues_destroy(struct be_adapter *adapter)
3041{
3042 struct be_queue_info *q;
3043 struct be_tx_obj *txo;
3044 u8 i;
3045
3046 for_all_tx_queues(adapter, txo, i) {
3047 q = &txo->q;
3048 if (q->created)
3049 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
3050 be_queue_free(adapter, q);
3051
3052 q = &txo->cq;
3053 if (q->created)
3054 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3055 be_queue_free(adapter, q);
3056 }
3057}
3058
3059static int be_tx_qs_create(struct be_adapter *adapter)
3060{
3061 struct be_queue_info *cq;
3062 struct be_tx_obj *txo;
3063 struct be_eq_obj *eqo;
3064 int status, i;
3065
3066 adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs);
3067
3068 for_all_tx_queues(adapter, txo, i) {
3069 cq = &txo->cq;
3070 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
3071 sizeof(struct be_eth_tx_compl));
3072 if (status)
3073 return status;
3074
3075 u64_stats_init(&txo->stats.sync);
3076 u64_stats_init(&txo->stats.sync_compl);
3077
3078 /* If num_evt_qs is less than num_tx_qs, then more than
3079 * one txq share an eq
3080 */
3081 eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
3082 status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
3083 if (status)
3084 return status;
3085
3086 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
3087 sizeof(struct be_eth_wrb));
3088 if (status)
3089 return status;
3090
3091 status = be_cmd_txq_create(adapter, txo);
3092 if (status)
3093 return status;
3094
3095 netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
3096 eqo->idx);
3097 }
3098
3099 dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
3100 adapter->num_tx_qs);
3101 return 0;
3102}
3103
3104static void be_rx_cqs_destroy(struct be_adapter *adapter)
3105{
3106 struct be_queue_info *q;
3107 struct be_rx_obj *rxo;
3108 int i;
3109
3110 for_all_rx_queues(adapter, rxo, i) {
3111 q = &rxo->cq;
3112 if (q->created)
3113 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3114 be_queue_free(adapter, q);
3115 }
3116}
3117
3118static int be_rx_cqs_create(struct be_adapter *adapter)
3119{
3120 struct be_queue_info *eq, *cq;
3121 struct be_rx_obj *rxo;
3122 int rc, i;
3123
3124 adapter->num_rss_qs =
3125 min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs);
3126
3127 /* We'll use RSS only if atleast 2 RSS rings are supported. */
3128 if (adapter->num_rss_qs < 2)
3129 adapter->num_rss_qs = 0;
3130
3131 adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;
3132
3133 /* When the interface is not capable of RSS rings (and there is no
3134 * need to create a default RXQ) we'll still need one RXQ
3135 */
3136 if (adapter->num_rx_qs == 0)
3137 adapter->num_rx_qs = 1;
3138
3139 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
3140 for_all_rx_queues(adapter, rxo, i) {
3141 rxo->adapter = adapter;
3142 cq = &rxo->cq;
3143 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
3144 sizeof(struct be_eth_rx_compl));
3145 if (rc)
3146 return rc;
3147
3148 u64_stats_init(&rxo->stats.sync);
3149 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
3150 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
3151 if (rc)
3152 return rc;
3153 }
3154
3155 dev_info(&adapter->pdev->dev,
3156 "created %d RX queue(s)\n", adapter->num_rx_qs);
3157 return 0;
3158}
3159
3160static irqreturn_t be_intx(int irq, void *dev)
3161{
3162 struct be_eq_obj *eqo = dev;
3163 struct be_adapter *adapter = eqo->adapter;
3164 int num_evts = 0;
3165
3166 /* IRQ is not expected when NAPI is scheduled as the EQ
3167 * will not be armed.
3168 * But, this can happen on Lancer INTx where it takes
3169 * a while to de-assert INTx or in BE2 where occasionaly
3170 * an interrupt may be raised even when EQ is unarmed.
3171 * If NAPI is already scheduled, then counting & notifying
3172 * events will orphan them.
3173 */
3174 if (napi_schedule_prep(&eqo->napi)) {
3175 num_evts = events_get(eqo);
3176 __napi_schedule(&eqo->napi);
3177 if (num_evts)
3178 eqo->spurious_intr = 0;
3179 }
3180 be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);
3181
3182 /* Return IRQ_HANDLED only for the first spurious intr
3183 * after a valid intr to stop the kernel from branding
3184 * this irq as a bad one!
3185 */
3186 if (num_evts || eqo->spurious_intr++ == 0)
3187 return IRQ_HANDLED;
3188 else
3189 return IRQ_NONE;
3190}
3191
3192static irqreturn_t be_msix(int irq, void *dev)
3193{
3194 struct be_eq_obj *eqo = dev;
3195
3196 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
3197 napi_schedule(&eqo->napi);
3198 return IRQ_HANDLED;
3199}
3200
3201static inline bool do_gro(struct be_rx_compl_info *rxcp)
3202{
3203 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
3204}
3205
3206static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
3207 int budget)
3208{
3209 struct be_adapter *adapter = rxo->adapter;
3210 struct be_queue_info *rx_cq = &rxo->cq;
3211 struct be_rx_compl_info *rxcp;
3212 u32 work_done;
3213 u32 frags_consumed = 0;
3214
3215 for (work_done = 0; work_done < budget; work_done++) {
3216 rxcp = be_rx_compl_get(rxo);
3217 if (!rxcp)
3218 break;
3219
3220 /* Is it a flush compl that has no data */
3221 if (unlikely(rxcp->num_rcvd == 0))
3222 goto loop_continue;
3223
3224 /* Discard compl with partial DMA Lancer B0 */
3225 if (unlikely(!rxcp->pkt_size)) {
3226 be_rx_compl_discard(rxo, rxcp);
3227 goto loop_continue;
3228 }
3229
3230 /* On BE drop pkts that arrive due to imperfect filtering in
3231 * promiscuous mode on some skews
3232 */
3233 if (unlikely(rxcp->port != adapter->port_num &&
3234 !lancer_chip(adapter))) {
3235 be_rx_compl_discard(rxo, rxcp);
3236 goto loop_continue;
3237 }
3238
3239 if (do_gro(rxcp))
3240 be_rx_compl_process_gro(rxo, napi, rxcp);
3241 else
3242 be_rx_compl_process(rxo, napi, rxcp);
3243
3244loop_continue:
3245 frags_consumed += rxcp->num_rcvd;
3246 be_rx_stats_update(rxo, rxcp);
3247 }
3248
3249 if (work_done) {
3250 be_cq_notify(adapter, rx_cq->id, true, work_done);
3251
3252 /* When an rx-obj gets into post_starved state, just
3253 * let be_worker do the posting.
3254 */
3255 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
3256 !rxo->rx_post_starved)
3257 be_post_rx_frags(rxo, GFP_ATOMIC,
3258 max_t(u32, MAX_RX_POST,
3259 frags_consumed));
3260 }
3261
3262 return work_done;
3263}
3264
3265
3266static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
3267 int idx)
3268{
3269 int num_wrbs = 0, work_done = 0;
3270 struct be_tx_compl_info *txcp;
3271
3272 while ((txcp = be_tx_compl_get(adapter, txo))) {
3273 num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);
3274 work_done++;
3275 }
3276
3277 if (work_done) {
3278 be_cq_notify(adapter, txo->cq.id, true, work_done);
3279 atomic_sub(num_wrbs, &txo->q.used);
3280
3281 /* As Tx wrbs have been freed up, wake up netdev queue
3282 * if it was stopped due to lack of tx wrbs. */
3283 if (__netif_subqueue_stopped(adapter->netdev, idx) &&
3284 be_can_txq_wake(txo)) {
3285 netif_wake_subqueue(adapter->netdev, idx);
3286 }
3287
3288 u64_stats_update_begin(&tx_stats(txo)->sync_compl);
3289 tx_stats(txo)->tx_compl += work_done;
3290 u64_stats_update_end(&tx_stats(txo)->sync_compl);
3291 }
3292}
3293
3294int be_poll(struct napi_struct *napi, int budget)
3295{
3296 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3297 struct be_adapter *adapter = eqo->adapter;
3298 int max_work = 0, work, i, num_evts;
3299 struct be_rx_obj *rxo;
3300 struct be_tx_obj *txo;
3301 u32 mult_enc = 0;
3302
3303 num_evts = events_get(eqo);
3304
3305 for_all_tx_queues_on_eq(adapter, eqo, txo, i)
3306 be_process_tx(adapter, txo, i);
3307
3308 /* This loop will iterate twice for EQ0 in which
3309 * completions of the last RXQ (default one) are also processed
3310 * For other EQs the loop iterates only once
3311 */
3312 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3313 work = be_process_rx(rxo, napi, budget);
3314 max_work = max(work, max_work);
3315 }
3316
3317 if (is_mcc_eqo(eqo))
3318 be_process_mcc(adapter);
3319
3320 if (max_work < budget) {
3321 napi_complete_done(napi, max_work);
3322
3323 /* Skyhawk EQ_DB has a provision to set the rearm to interrupt
3324 * delay via a delay multiplier encoding value
3325 */
3326 if (skyhawk_chip(adapter))
3327 mult_enc = be_get_eq_delay_mult_enc(eqo);
3328
3329 be_eq_notify(adapter, eqo->q.id, true, false, num_evts,
3330 mult_enc);
3331 } else {
3332 /* As we'll continue in polling mode, count and clear events */
3333 be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);
3334 }
3335 return max_work;
3336}
3337
3338void be_detect_error(struct be_adapter *adapter)
3339{
3340 u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
3341 u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
3342 struct device *dev = &adapter->pdev->dev;
3343 u16 val;
3344 u32 i;
3345
3346 if (be_check_error(adapter, BE_ERROR_HW))
3347 return;
3348
3349 if (lancer_chip(adapter)) {
3350 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
3351 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
3352 be_set_error(adapter, BE_ERROR_UE);
3353 sliport_err1 = ioread32(adapter->db +
3354 SLIPORT_ERROR1_OFFSET);
3355 sliport_err2 = ioread32(adapter->db +
3356 SLIPORT_ERROR2_OFFSET);
3357 /* Do not log error messages if its a FW reset */
3358 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
3359 sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
3360 dev_info(dev, "Reset is in progress\n");
3361 } else {
3362 dev_err(dev, "Error detected in the card\n");
3363 dev_err(dev, "ERR: sliport status 0x%x\n",
3364 sliport_status);
3365 dev_err(dev, "ERR: sliport error1 0x%x\n",
3366 sliport_err1);
3367 dev_err(dev, "ERR: sliport error2 0x%x\n",
3368 sliport_err2);
3369 }
3370 }
3371 } else {
3372 ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);
3373 ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);
3374 ue_lo_mask = ioread32(adapter->pcicfg +
3375 PCICFG_UE_STATUS_LOW_MASK);
3376 ue_hi_mask = ioread32(adapter->pcicfg +
3377 PCICFG_UE_STATUS_HI_MASK);
3378
3379 ue_lo = (ue_lo & ~ue_lo_mask);
3380 ue_hi = (ue_hi & ~ue_hi_mask);
3381
3382 if (ue_lo || ue_hi) {
3383 /* On certain platforms BE3 hardware can indicate
3384 * spurious UEs. In case of a UE in the chip,
3385 * the POST register correctly reports either a
3386 * FAT_LOG_START state (FW is currently dumping
3387 * FAT log data) or a ARMFW_UE state. Check for the
3388 * above states to ascertain if the UE is valid or not.
3389 */
3390 if (BE3_chip(adapter)) {
3391 val = be_POST_stage_get(adapter);
3392 if ((val & POST_STAGE_FAT_LOG_START)
3393 != POST_STAGE_FAT_LOG_START &&
3394 (val & POST_STAGE_ARMFW_UE)
3395 != POST_STAGE_ARMFW_UE &&
3396 (val & POST_STAGE_RECOVERABLE_ERR)
3397 != POST_STAGE_RECOVERABLE_ERR)
3398 return;
3399 }
3400
3401 dev_err(dev, "Error detected in the adapter");
3402 be_set_error(adapter, BE_ERROR_UE);
3403
3404 for (i = 0; ue_lo; ue_lo >>= 1, i++) {
3405 if (ue_lo & 1)
3406 dev_err(dev, "UE: %s bit set\n",
3407 ue_status_low_desc[i]);
3408 }
3409 for (i = 0; ue_hi; ue_hi >>= 1, i++) {
3410 if (ue_hi & 1)
3411 dev_err(dev, "UE: %s bit set\n",
3412 ue_status_hi_desc[i]);
3413 }
3414 }
3415 }
3416}
3417
3418static void be_msix_disable(struct be_adapter *adapter)
3419{
3420 if (msix_enabled(adapter)) {
3421 pci_disable_msix(adapter->pdev);
3422 adapter->num_msix_vec = 0;
3423 adapter->num_msix_roce_vec = 0;
3424 }
3425}
3426
3427static int be_msix_enable(struct be_adapter *adapter)
3428{
3429 unsigned int i, max_roce_eqs;
3430 struct device *dev = &adapter->pdev->dev;
3431 int num_vec;
3432
3433 /* If RoCE is supported, program the max number of vectors that
3434 * could be used for NIC and RoCE, else, just program the number
3435 * we'll use initially.
3436 */
3437 if (be_roce_supported(adapter)) {
3438 max_roce_eqs =
3439 be_max_func_eqs(adapter) - be_max_nic_eqs(adapter);
3440 max_roce_eqs = min(max_roce_eqs, num_online_cpus());
3441 num_vec = be_max_any_irqs(adapter) + max_roce_eqs;
3442 } else {
3443 num_vec = max(adapter->cfg_num_rx_irqs,
3444 adapter->cfg_num_tx_irqs);
3445 }
3446
3447 for (i = 0; i < num_vec; i++)
3448 adapter->msix_entries[i].entry = i;
3449
3450 num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
3451 MIN_MSIX_VECTORS, num_vec);
3452 if (num_vec < 0)
3453 goto fail;
3454
3455 if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
3456 adapter->num_msix_roce_vec = num_vec / 2;
3457 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
3458 adapter->num_msix_roce_vec);
3459 }
3460
3461 adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
3462
3463 dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
3464 adapter->num_msix_vec);
3465 return 0;
3466
3467fail:
3468 dev_warn(dev, "MSIx enable failed\n");
3469
3470 /* INTx is not supported in VFs, so fail probe if enable_msix fails */
3471 if (be_virtfn(adapter))
3472 return num_vec;
3473 return 0;
3474}
3475
3476static inline int be_msix_vec_get(struct be_adapter *adapter,
3477 struct be_eq_obj *eqo)
3478{
3479 return adapter->msix_entries[eqo->msix_idx].vector;
3480}
3481
3482static int be_msix_register(struct be_adapter *adapter)
3483{
3484 struct net_device *netdev = adapter->netdev;
3485 struct be_eq_obj *eqo;
3486 int status, i, vec;
3487
3488 for_all_evt_queues(adapter, eqo, i) {
3489 sprintf(eqo->desc, "%s-q%d", netdev->name, i);
3490 vec = be_msix_vec_get(adapter, eqo);
3491 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
3492 if (status)
3493 goto err_msix;
3494
3495 irq_update_affinity_hint(vec, eqo->affinity_mask);
3496 }
3497
3498 return 0;
3499err_msix:
3500 for (i--; i >= 0; i--) {
3501 eqo = &adapter->eq_obj[i];
3502 free_irq(be_msix_vec_get(adapter, eqo), eqo);
3503 }
3504 dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
3505 status);
3506 be_msix_disable(adapter);
3507 return status;
3508}
3509
3510static int be_irq_register(struct be_adapter *adapter)
3511{
3512 struct net_device *netdev = adapter->netdev;
3513 int status;
3514
3515 if (msix_enabled(adapter)) {
3516 status = be_msix_register(adapter);
3517 if (status == 0)
3518 goto done;
3519 /* INTx is not supported for VF */
3520 if (be_virtfn(adapter))
3521 return status;
3522 }
3523
3524 /* INTx: only the first EQ is used */
3525 netdev->irq = adapter->pdev->irq;
3526 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
3527 &adapter->eq_obj[0]);
3528 if (status) {
3529 dev_err(&adapter->pdev->dev,
3530 "INTx request IRQ failed - err %d\n", status);
3531 return status;
3532 }
3533done:
3534 adapter->isr_registered = true;
3535 return 0;
3536}
3537
3538static void be_irq_unregister(struct be_adapter *adapter)
3539{
3540 struct net_device *netdev = adapter->netdev;
3541 struct be_eq_obj *eqo;
3542 int i, vec;
3543
3544 if (!adapter->isr_registered)
3545 return;
3546
3547 /* INTx */
3548 if (!msix_enabled(adapter)) {
3549 free_irq(netdev->irq, &adapter->eq_obj[0]);
3550 goto done;
3551 }
3552
3553 /* MSIx */
3554 for_all_evt_queues(adapter, eqo, i) {
3555 vec = be_msix_vec_get(adapter, eqo);
3556 irq_update_affinity_hint(vec, NULL);
3557 free_irq(vec, eqo);
3558 }
3559
3560done:
3561 adapter->isr_registered = false;
3562}
3563
3564static void be_rx_qs_destroy(struct be_adapter *adapter)
3565{
3566 struct rss_info *rss = &adapter->rss_info;
3567 struct be_queue_info *q;
3568 struct be_rx_obj *rxo;
3569 int i;
3570
3571 for_all_rx_queues(adapter, rxo, i) {
3572 q = &rxo->q;
3573 if (q->created) {
3574 /* If RXQs are destroyed while in an "out of buffer"
3575 * state, there is a possibility of an HW stall on
3576 * Lancer. So, post 64 buffers to each queue to relieve
3577 * the "out of buffer" condition.
3578 * Make sure there's space in the RXQ before posting.
3579 */
3580 if (lancer_chip(adapter)) {
3581 be_rx_cq_clean(rxo);
3582 if (atomic_read(&q->used) == 0)
3583 be_post_rx_frags(rxo, GFP_KERNEL,
3584 MAX_RX_POST);
3585 }
3586
3587 be_cmd_rxq_destroy(adapter, q);
3588 be_rx_cq_clean(rxo);
3589 be_rxq_clean(rxo);
3590 }
3591 be_queue_free(adapter, q);
3592 }
3593
3594 if (rss->rss_flags) {
3595 rss->rss_flags = RSS_ENABLE_NONE;
3596 be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3597 128, rss->rss_hkey);
3598 }
3599}
3600
3601static void be_disable_if_filters(struct be_adapter *adapter)
3602{
3603 /* Don't delete MAC on BE3 VFs without FILTMGMT privilege */
3604 if (!BEx_chip(adapter) || !be_virtfn(adapter) ||
3605 check_privilege(adapter, BE_PRIV_FILTMGMT)) {
3606 be_dev_mac_del(adapter, adapter->pmac_id[0]);
3607 eth_zero_addr(adapter->dev_mac);
3608 }
3609
3610 be_clear_uc_list(adapter);
3611 be_clear_mc_list(adapter);
3612
3613 /* The IFACE flags are enabled in the open path and cleared
3614 * in the close path. When a VF gets detached from the host and
3615 * assigned to a VM the following happens:
3616 * - VF's IFACE flags get cleared in the detach path
3617 * - IFACE create is issued by the VF in the attach path
3618 * Due to a bug in the BE3/Skyhawk-R FW
3619 * (Lancer FW doesn't have the bug), the IFACE capability flags
3620 * specified along with the IFACE create cmd issued by a VF are not
3621 * honoured by FW. As a consequence, if a *new* driver
3622 * (that enables/disables IFACE flags in open/close)
3623 * is loaded in the host and an *old* driver is * used by a VM/VF,
3624 * the IFACE gets created *without* the needed flags.
3625 * To avoid this, disable RX-filter flags only for Lancer.
3626 */
3627 if (lancer_chip(adapter)) {
3628 be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
3629 adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
3630 }
3631}
3632
3633static int be_close(struct net_device *netdev)
3634{
3635 struct be_adapter *adapter = netdev_priv(netdev);
3636 struct be_eq_obj *eqo;
3637 int i;
3638
3639 /* This protection is needed as be_close() may be called even when the
3640 * adapter is in cleared state (after eeh perm failure)
3641 */
3642 if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
3643 return 0;
3644
3645 /* Before attempting cleanup ensure all the pending cmds in the
3646 * config_wq have finished execution
3647 */
3648 flush_workqueue(be_wq);
3649
3650 be_disable_if_filters(adapter);
3651
3652 if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
3653 for_all_evt_queues(adapter, eqo, i) {
3654 napi_disable(&eqo->napi);
3655 }
3656 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
3657 }
3658
3659 be_async_mcc_disable(adapter);
3660
3661 /* Wait for all pending tx completions to arrive so that
3662 * all tx skbs are freed.
3663 */
3664 netif_tx_disable(netdev);
3665 be_tx_compl_clean(adapter);
3666
3667 be_rx_qs_destroy(adapter);
3668
3669 for_all_evt_queues(adapter, eqo, i) {
3670 if (msix_enabled(adapter))
3671 synchronize_irq(be_msix_vec_get(adapter, eqo));
3672 else
3673 synchronize_irq(netdev->irq);
3674 be_eq_clean(eqo);
3675 }
3676
3677 be_irq_unregister(adapter);
3678
3679 return 0;
3680}
3681
3682static int be_rx_qs_create(struct be_adapter *adapter)
3683{
3684 struct rss_info *rss = &adapter->rss_info;
3685 u8 rss_key[RSS_HASH_KEY_LEN];
3686 struct be_rx_obj *rxo;
3687 int rc, i, j;
3688
3689 for_all_rx_queues(adapter, rxo, i) {
3690 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
3691 sizeof(struct be_eth_rx_d));
3692 if (rc)
3693 return rc;
3694 }
3695
3696 if (adapter->need_def_rxq || !adapter->num_rss_qs) {
3697 rxo = default_rxo(adapter);
3698 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3699 rx_frag_size, adapter->if_handle,
3700 false, &rxo->rss_id);
3701 if (rc)
3702 return rc;
3703 }
3704
3705 for_all_rss_queues(adapter, rxo, i) {
3706 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3707 rx_frag_size, adapter->if_handle,
3708 true, &rxo->rss_id);
3709 if (rc)
3710 return rc;
3711 }
3712
3713 if (be_multi_rxq(adapter)) {
3714 for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {
3715 for_all_rss_queues(adapter, rxo, i) {
3716 if ((j + i) >= RSS_INDIR_TABLE_LEN)
3717 break;
3718 rss->rsstable[j + i] = rxo->rss_id;
3719 rss->rss_queue[j + i] = i;
3720 }
3721 }
3722 rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
3723 RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
3724
3725 if (!BEx_chip(adapter))
3726 rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |
3727 RSS_ENABLE_UDP_IPV6;
3728
3729 netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
3730 rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3731 RSS_INDIR_TABLE_LEN, rss_key);
3732 if (rc) {
3733 rss->rss_flags = RSS_ENABLE_NONE;
3734 return rc;
3735 }
3736
3737 memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
3738 } else {
3739 /* Disable RSS, if only default RX Q is created */
3740 rss->rss_flags = RSS_ENABLE_NONE;
3741 }
3742
3743
3744 /* Post 1 less than RXQ-len to avoid head being equal to tail,
3745 * which is a queue empty condition
3746 */
3747 for_all_rx_queues(adapter, rxo, i)
3748 be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);
3749
3750 return 0;
3751}
3752
3753static int be_enable_if_filters(struct be_adapter *adapter)
3754{
3755 int status;
3756
3757 status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);
3758 if (status)
3759 return status;
3760
3761 /* Normally this condition usually true as the ->dev_mac is zeroed.
3762 * But on BE3 VFs the initial MAC is pre-programmed by PF and
3763 * subsequent be_dev_mac_add() can fail (after fresh boot)
3764 */
3765 if (!ether_addr_equal(adapter->dev_mac, adapter->netdev->dev_addr)) {
3766 int old_pmac_id = -1;
3767
3768 /* Remember old programmed MAC if any - can happen on BE3 VF */
3769 if (!is_zero_ether_addr(adapter->dev_mac))
3770 old_pmac_id = adapter->pmac_id[0];
3771
3772 status = be_dev_mac_add(adapter, adapter->netdev->dev_addr);
3773 if (status)
3774 return status;
3775
3776 /* Delete the old programmed MAC as we successfully programmed
3777 * a new MAC
3778 */
3779 if (old_pmac_id >= 0 && old_pmac_id != adapter->pmac_id[0])
3780 be_dev_mac_del(adapter, old_pmac_id);
3781
3782 ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr);
3783 }
3784
3785 if (adapter->vlans_added)
3786 be_vid_config(adapter);
3787
3788 __be_set_rx_mode(adapter);
3789
3790 return 0;
3791}
3792
3793static int be_open(struct net_device *netdev)
3794{
3795 struct be_adapter *adapter = netdev_priv(netdev);
3796 struct be_eq_obj *eqo;
3797 struct be_rx_obj *rxo;
3798 struct be_tx_obj *txo;
3799 u8 link_status;
3800 int status, i;
3801
3802 status = be_rx_qs_create(adapter);
3803 if (status)
3804 goto err;
3805
3806 status = be_enable_if_filters(adapter);
3807 if (status)
3808 goto err;
3809
3810 status = be_irq_register(adapter);
3811 if (status)
3812 goto err;
3813
3814 for_all_rx_queues(adapter, rxo, i)
3815 be_cq_notify(adapter, rxo->cq.id, true, 0);
3816
3817 for_all_tx_queues(adapter, txo, i)
3818 be_cq_notify(adapter, txo->cq.id, true, 0);
3819
3820 be_async_mcc_enable(adapter);
3821
3822 for_all_evt_queues(adapter, eqo, i) {
3823 napi_enable(&eqo->napi);
3824 be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);
3825 }
3826 adapter->flags |= BE_FLAGS_NAPI_ENABLED;
3827
3828 status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
3829 if (!status)
3830 be_link_status_update(adapter, link_status);
3831
3832 netif_tx_start_all_queues(netdev);
3833
3834 udp_tunnel_nic_reset_ntf(netdev);
3835
3836 return 0;
3837err:
3838 be_close(adapter->netdev);
3839 return -EIO;
3840}
3841
3842static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
3843{
3844 u32 addr;
3845
3846 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
3847
3848 mac[5] = (u8)(addr & 0xFF);
3849 mac[4] = (u8)((addr >> 8) & 0xFF);
3850 mac[3] = (u8)((addr >> 16) & 0xFF);
3851 /* Use the OUI from the current MAC address */
3852 memcpy(mac, adapter->netdev->dev_addr, 3);
3853}
3854
3855/*
3856 * Generate a seed MAC address from the PF MAC Address using jhash.
3857 * MAC Address for VFs are assigned incrementally starting from the seed.
3858 * These addresses are programmed in the ASIC by the PF and the VF driver
3859 * queries for the MAC address during its probe.
3860 */
3861static int be_vf_eth_addr_config(struct be_adapter *adapter)
3862{
3863 u32 vf;
3864 int status = 0;
3865 u8 mac[ETH_ALEN];
3866 struct be_vf_cfg *vf_cfg;
3867
3868 be_vf_eth_addr_generate(adapter, mac);
3869
3870 for_all_vfs(adapter, vf_cfg, vf) {
3871 if (BEx_chip(adapter))
3872 status = be_cmd_pmac_add(adapter, mac,
3873 vf_cfg->if_handle,
3874 &vf_cfg->pmac_id, vf + 1);
3875 else
3876 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
3877 vf + 1);
3878
3879 if (status)
3880 dev_err(&adapter->pdev->dev,
3881 "Mac address assignment failed for VF %d\n",
3882 vf);
3883 else
3884 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3885
3886 mac[5] += 1;
3887 }
3888 return status;
3889}
3890
3891static int be_vfs_mac_query(struct be_adapter *adapter)
3892{
3893 int status, vf;
3894 u8 mac[ETH_ALEN];
3895 struct be_vf_cfg *vf_cfg;
3896
3897 for_all_vfs(adapter, vf_cfg, vf) {
3898 status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,
3899 mac, vf_cfg->if_handle,
3900 false, vf+1);
3901 if (status)
3902 return status;
3903 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3904 }
3905 return 0;
3906}
3907
3908static void be_vf_clear(struct be_adapter *adapter)
3909{
3910 struct be_vf_cfg *vf_cfg;
3911 u32 vf;
3912
3913 if (pci_vfs_assigned(adapter->pdev)) {
3914 dev_warn(&adapter->pdev->dev,
3915 "VFs are assigned to VMs: not disabling VFs\n");
3916 goto done;
3917 }
3918
3919 pci_disable_sriov(adapter->pdev);
3920
3921 for_all_vfs(adapter, vf_cfg, vf) {
3922 if (BEx_chip(adapter))
3923 be_cmd_pmac_del(adapter, vf_cfg->if_handle,
3924 vf_cfg->pmac_id, vf + 1);
3925 else
3926 be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
3927 vf + 1);
3928
3929 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
3930 }
3931
3932 if (BE3_chip(adapter))
3933 be_cmd_set_hsw_config(adapter, 0, 0,
3934 adapter->if_handle,
3935 PORT_FWD_TYPE_PASSTHRU, 0);
3936done:
3937 kfree(adapter->vf_cfg);
3938 adapter->num_vfs = 0;
3939 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3940}
3941
3942static void be_clear_queues(struct be_adapter *adapter)
3943{
3944 be_mcc_queues_destroy(adapter);
3945 be_rx_cqs_destroy(adapter);
3946 be_tx_queues_destroy(adapter);
3947 be_evt_queues_destroy(adapter);
3948}
3949
3950static void be_cancel_worker(struct be_adapter *adapter)
3951{
3952 if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
3953 cancel_delayed_work_sync(&adapter->work);
3954 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
3955 }
3956}
3957
3958static void be_cancel_err_detection(struct be_adapter *adapter)
3959{
3960 struct be_error_recovery *err_rec = &adapter->error_recovery;
3961
3962 if (!be_err_recovery_workq)
3963 return;
3964
3965 if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {
3966 cancel_delayed_work_sync(&err_rec->err_detection_work);
3967 adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;
3968 }
3969}
3970
3971/* VxLAN offload Notes:
3972 *
3973 * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't
3974 * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload
3975 * is expected to work across all types of IP tunnels once exported. Skyhawk
3976 * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN
3977 * offloads in hw_enc_features only when a VxLAN port is added. If other (non
3978 * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for
3979 * those other tunnels are unexported on the fly through ndo_features_check().
3980 */
3981static int be_vxlan_set_port(struct net_device *netdev, unsigned int table,
3982 unsigned int entry, struct udp_tunnel_info *ti)
3983{
3984 struct be_adapter *adapter = netdev_priv(netdev);
3985 struct device *dev = &adapter->pdev->dev;
3986 int status;
3987
3988 status = be_cmd_manage_iface(adapter, adapter->if_handle,
3989 OP_CONVERT_NORMAL_TO_TUNNEL);
3990 if (status) {
3991 dev_warn(dev, "Failed to convert normal interface to tunnel\n");
3992 return status;
3993 }
3994 adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
3995
3996 status = be_cmd_set_vxlan_port(adapter, ti->port);
3997 if (status) {
3998 dev_warn(dev, "Failed to add VxLAN port\n");
3999 return status;
4000 }
4001 adapter->vxlan_port = ti->port;
4002
4003 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
4004 NETIF_F_TSO | NETIF_F_TSO6 |
4005 NETIF_F_GSO_UDP_TUNNEL;
4006
4007 dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
4008 be16_to_cpu(ti->port));
4009 return 0;
4010}
4011
4012static int be_vxlan_unset_port(struct net_device *netdev, unsigned int table,
4013 unsigned int entry, struct udp_tunnel_info *ti)
4014{
4015 struct be_adapter *adapter = netdev_priv(netdev);
4016
4017 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
4018 be_cmd_manage_iface(adapter, adapter->if_handle,
4019 OP_CONVERT_TUNNEL_TO_NORMAL);
4020
4021 if (adapter->vxlan_port)
4022 be_cmd_set_vxlan_port(adapter, 0);
4023
4024 adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
4025 adapter->vxlan_port = 0;
4026
4027 netdev->hw_enc_features = 0;
4028 return 0;
4029}
4030
4031static const struct udp_tunnel_nic_info be_udp_tunnels = {
4032 .set_port = be_vxlan_set_port,
4033 .unset_port = be_vxlan_unset_port,
4034 .flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
4035 UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
4036 .tables = {
4037 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
4038 },
4039};
4040
4041static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,
4042 struct be_resources *vft_res)
4043{
4044 struct be_resources res = adapter->pool_res;
4045 u32 vf_if_cap_flags = res.vf_if_cap_flags;
4046 struct be_resources res_mod = {0};
4047 u16 num_vf_qs = 1;
4048
4049 /* Distribute the queue resources among the PF and it's VFs */
4050 if (num_vfs) {
4051 /* Divide the rx queues evenly among the VFs and the PF, capped
4052 * at VF-EQ-count. Any remainder queues belong to the PF.
4053 */
4054 num_vf_qs = min(SH_VF_MAX_NIC_EQS,
4055 res.max_rss_qs / (num_vfs + 1));
4056
4057 /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES
4058 * RSS Tables per port. Provide RSS on VFs, only if number of
4059 * VFs requested is less than it's PF Pool's RSS Tables limit.
4060 */
4061 if (num_vfs >= be_max_pf_pool_rss_tables(adapter))
4062 num_vf_qs = 1;
4063 }
4064
4065 /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,
4066 * which are modifiable using SET_PROFILE_CONFIG cmd.
4067 */
4068 be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,
4069 RESOURCE_MODIFIABLE, 0);
4070
4071 /* If RSS IFACE capability flags are modifiable for a VF, set the
4072 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if
4073 * more than 1 RSSQ is available for a VF.
4074 * Otherwise, provision only 1 queue pair for VF.
4075 */
4076 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {
4077 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4078 if (num_vf_qs > 1) {
4079 vf_if_cap_flags |= BE_IF_FLAGS_RSS;
4080 if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)
4081 vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;
4082 } else {
4083 vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |
4084 BE_IF_FLAGS_DEFQ_RSS);
4085 }
4086 } else {
4087 num_vf_qs = 1;
4088 }
4089
4090 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
4091 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4092 vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4093 }
4094
4095 vft_res->vf_if_cap_flags = vf_if_cap_flags;
4096 vft_res->max_rx_qs = num_vf_qs;
4097 vft_res->max_rss_qs = num_vf_qs;
4098 vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);
4099 vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);
4100
4101 /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally
4102 * among the PF and it's VFs, if the fields are changeable
4103 */
4104 if (res_mod.max_uc_mac == FIELD_MODIFIABLE)
4105 vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);
4106
4107 if (res_mod.max_vlans == FIELD_MODIFIABLE)
4108 vft_res->max_vlans = res.max_vlans / (num_vfs + 1);
4109
4110 if (res_mod.max_iface_count == FIELD_MODIFIABLE)
4111 vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);
4112
4113 if (res_mod.max_mcc_count == FIELD_MODIFIABLE)
4114 vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);
4115}
4116
4117static void be_if_destroy(struct be_adapter *adapter)
4118{
4119 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4120
4121 kfree(adapter->pmac_id);
4122 adapter->pmac_id = NULL;
4123
4124 kfree(adapter->mc_list);
4125 adapter->mc_list = NULL;
4126
4127 kfree(adapter->uc_list);
4128 adapter->uc_list = NULL;
4129}
4130
4131static int be_clear(struct be_adapter *adapter)
4132{
4133 struct pci_dev *pdev = adapter->pdev;
4134 struct be_resources vft_res = {0};
4135
4136 be_cancel_worker(adapter);
4137
4138 flush_workqueue(be_wq);
4139
4140 if (sriov_enabled(adapter))
4141 be_vf_clear(adapter);
4142
4143 /* Re-configure FW to distribute resources evenly across max-supported
4144 * number of VFs, only when VFs are not already enabled.
4145 */
4146 if (skyhawk_chip(adapter) && be_physfn(adapter) &&
4147 !pci_vfs_assigned(pdev)) {
4148 be_calculate_vf_res(adapter,
4149 pci_sriov_get_totalvfs(pdev),
4150 &vft_res);
4151 be_cmd_set_sriov_config(adapter, adapter->pool_res,
4152 pci_sriov_get_totalvfs(pdev),
4153 &vft_res);
4154 }
4155
4156 be_vxlan_unset_port(adapter->netdev, 0, 0, NULL);
4157
4158 be_if_destroy(adapter);
4159
4160 be_clear_queues(adapter);
4161
4162 be_msix_disable(adapter);
4163 adapter->flags &= ~BE_FLAGS_SETUP_DONE;
4164 return 0;
4165}
4166
4167static int be_vfs_if_create(struct be_adapter *adapter)
4168{
4169 struct be_resources res = {0};
4170 u32 cap_flags, en_flags, vf;
4171 struct be_vf_cfg *vf_cfg;
4172 int status;
4173
4174 /* If a FW profile exists, then cap_flags are updated */
4175 cap_flags = BE_VF_IF_EN_FLAGS;
4176
4177 for_all_vfs(adapter, vf_cfg, vf) {
4178 if (!BE3_chip(adapter)) {
4179 status = be_cmd_get_profile_config(adapter, &res, NULL,
4180 ACTIVE_PROFILE_TYPE,
4181 RESOURCE_LIMITS,
4182 vf + 1);
4183 if (!status) {
4184 cap_flags = res.if_cap_flags;
4185 /* Prevent VFs from enabling VLAN promiscuous
4186 * mode
4187 */
4188 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4189 }
4190 }
4191
4192 /* PF should enable IF flags during proxy if_create call */
4193 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
4194 status = be_cmd_if_create(adapter, cap_flags, en_flags,
4195 &vf_cfg->if_handle, vf + 1);
4196 if (status)
4197 return status;
4198 }
4199
4200 return 0;
4201}
4202
4203static int be_vf_setup_init(struct be_adapter *adapter)
4204{
4205 struct be_vf_cfg *vf_cfg;
4206 int vf;
4207
4208 adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
4209 GFP_KERNEL);
4210 if (!adapter->vf_cfg)
4211 return -ENOMEM;
4212
4213 for_all_vfs(adapter, vf_cfg, vf) {
4214 vf_cfg->if_handle = -1;
4215 vf_cfg->pmac_id = -1;
4216 }
4217 return 0;
4218}
4219
4220static int be_vf_setup(struct be_adapter *adapter)
4221{
4222 struct device *dev = &adapter->pdev->dev;
4223 struct be_vf_cfg *vf_cfg;
4224 int status, old_vfs, vf;
4225 bool spoofchk;
4226
4227 old_vfs = pci_num_vf(adapter->pdev);
4228
4229 status = be_vf_setup_init(adapter);
4230 if (status)
4231 goto err;
4232
4233 if (old_vfs) {
4234 for_all_vfs(adapter, vf_cfg, vf) {
4235 status = be_cmd_get_if_id(adapter, vf_cfg, vf);
4236 if (status)
4237 goto err;
4238 }
4239
4240 status = be_vfs_mac_query(adapter);
4241 if (status)
4242 goto err;
4243 } else {
4244 status = be_vfs_if_create(adapter);
4245 if (status)
4246 goto err;
4247
4248 status = be_vf_eth_addr_config(adapter);
4249 if (status)
4250 goto err;
4251 }
4252
4253 for_all_vfs(adapter, vf_cfg, vf) {
4254 /* Allow VFs to programs MAC/VLAN filters */
4255 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
4256 vf + 1);
4257 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
4258 status = be_cmd_set_fn_privileges(adapter,
4259 vf_cfg->privileges |
4260 BE_PRIV_FILTMGMT,
4261 vf + 1);
4262 if (!status) {
4263 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
4264 dev_info(dev, "VF%d has FILTMGMT privilege\n",
4265 vf);
4266 }
4267 }
4268
4269 /* Allow full available bandwidth */
4270 if (!old_vfs)
4271 be_cmd_config_qos(adapter, 0, 0, vf + 1);
4272
4273 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
4274 vf_cfg->if_handle, NULL,
4275 &spoofchk);
4276 if (!status)
4277 vf_cfg->spoofchk = spoofchk;
4278
4279 if (!old_vfs) {
4280 be_cmd_enable_vf(adapter, vf + 1);
4281 be_cmd_set_logical_link_config(adapter,
4282 IFLA_VF_LINK_STATE_AUTO,
4283 vf+1);
4284 }
4285 }
4286
4287 if (!old_vfs) {
4288 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
4289 if (status) {
4290 dev_err(dev, "SRIOV enable failed\n");
4291 adapter->num_vfs = 0;
4292 goto err;
4293 }
4294 }
4295
4296 if (BE3_chip(adapter)) {
4297 /* On BE3, enable VEB only when SRIOV is enabled */
4298 status = be_cmd_set_hsw_config(adapter, 0, 0,
4299 adapter->if_handle,
4300 PORT_FWD_TYPE_VEB, 0);
4301 if (status)
4302 goto err;
4303 }
4304
4305 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4306 return 0;
4307err:
4308 dev_err(dev, "VF setup failed\n");
4309 be_vf_clear(adapter);
4310 return status;
4311}
4312
4313/* Converting function_mode bits on BE3 to SH mc_type enums */
4314
4315static u8 be_convert_mc_type(u32 function_mode)
4316{
4317 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4318 return vNIC1;
4319 else if (function_mode & QNQ_MODE)
4320 return FLEX10;
4321 else if (function_mode & VNIC_MODE)
4322 return vNIC2;
4323 else if (function_mode & UMC_ENABLED)
4324 return UMC;
4325 else
4326 return MC_NONE;
4327}
4328
4329/* On BE2/BE3 FW does not suggest the supported limits */
4330static void BEx_get_resources(struct be_adapter *adapter,
4331 struct be_resources *res)
4332{
4333 bool use_sriov = adapter->num_vfs ? 1 : 0;
4334
4335 if (be_physfn(adapter))
4336 res->max_uc_mac = BE_UC_PMAC_COUNT;
4337 else
4338 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4339
4340 adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4341
4342 if (be_is_mc(adapter)) {
4343 /* Assuming that there are 4 channels per port,
4344 * when multi-channel is enabled
4345 */
4346 if (be_is_qnq_mode(adapter))
4347 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4348 else
4349 /* In a non-qnq multichannel mode, the pvid
4350 * takes up one vlan entry
4351 */
4352 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4353 } else {
4354 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4355 }
4356
4357 res->max_mcast_mac = BE_MAX_MC;
4358
4359 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4360 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4361 * *only* if it is RSS-capable.
4362 */
4363 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||
4364 be_virtfn(adapter) ||
4365 (be_is_mc(adapter) &&
4366 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4367 res->max_tx_qs = 1;
4368 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4369 struct be_resources super_nic_res = {0};
4370
4371 /* On a SuperNIC profile, the driver needs to use the
4372 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4373 */
4374 be_cmd_get_profile_config(adapter, &super_nic_res, NULL,
4375 ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,
4376 0);
4377 /* Some old versions of BE3 FW don't report max_tx_qs value */
4378 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4379 } else {
4380 res->max_tx_qs = BE3_MAX_TX_QS;
4381 }
4382
4383 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4384 !use_sriov && be_physfn(adapter))
4385 res->max_rss_qs = (adapter->be3_native) ?
4386 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4387 res->max_rx_qs = res->max_rss_qs + 1;
4388
4389 if (be_physfn(adapter))
4390 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4391 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4392 else
4393 res->max_evt_qs = 1;
4394
4395 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4396 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4397 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4398 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4399}
4400
4401static void be_setup_init(struct be_adapter *adapter)
4402{
4403 adapter->vlan_prio_bmap = 0xff;
4404 adapter->phy.link_speed = -1;
4405 adapter->if_handle = -1;
4406 adapter->be3_native = false;
4407 adapter->if_flags = 0;
4408 adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4409 if (be_physfn(adapter))
4410 adapter->cmd_privileges = MAX_PRIVILEGES;
4411 else
4412 adapter->cmd_privileges = MIN_PRIVILEGES;
4413}
4414
4415/* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.
4416 * However, this HW limitation is not exposed to the host via any SLI cmd.
4417 * As a result, in the case of SRIOV and in particular multi-partition configs
4418 * the driver needs to calcuate a proportional share of RSS Tables per PF-pool
4419 * for distribution between the VFs. This self-imposed limit will determine the
4420 * no: of VFs for which RSS can be enabled.
4421 */
4422static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)
4423{
4424 struct be_port_resources port_res = {0};
4425 u8 rss_tables_on_port;
4426 u16 max_vfs = be_max_vfs(adapter);
4427
4428 be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,
4429 RESOURCE_LIMITS, 0);
4430
4431 rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;
4432
4433 /* Each PF Pool's RSS Tables limit =
4434 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port
4435 */
4436 adapter->pool_res.max_rss_tables =
4437 max_vfs * rss_tables_on_port / port_res.max_vfs;
4438}
4439
4440static int be_get_sriov_config(struct be_adapter *adapter)
4441{
4442 struct be_resources res = {0};
4443 int max_vfs, old_vfs;
4444
4445 be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,
4446 RESOURCE_LIMITS, 0);
4447
4448 /* Some old versions of BE3 FW don't report max_vfs value */
4449 if (BE3_chip(adapter) && !res.max_vfs) {
4450 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4451 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4452 }
4453
4454 adapter->pool_res = res;
4455
4456 /* If during previous unload of the driver, the VFs were not disabled,
4457 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4458 * Instead use the TotalVFs value stored in the pci-dev struct.
4459 */
4460 old_vfs = pci_num_vf(adapter->pdev);
4461 if (old_vfs) {
4462 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4463 old_vfs);
4464
4465 adapter->pool_res.max_vfs =
4466 pci_sriov_get_totalvfs(adapter->pdev);
4467 adapter->num_vfs = old_vfs;
4468 }
4469
4470 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4471 be_calculate_pf_pool_rss_tables(adapter);
4472 dev_info(&adapter->pdev->dev,
4473 "RSS can be enabled for all VFs if num_vfs <= %d\n",
4474 be_max_pf_pool_rss_tables(adapter));
4475 }
4476 return 0;
4477}
4478
4479static void be_alloc_sriov_res(struct be_adapter *adapter)
4480{
4481 int old_vfs = pci_num_vf(adapter->pdev);
4482 struct be_resources vft_res = {0};
4483 int status;
4484
4485 be_get_sriov_config(adapter);
4486
4487 if (!old_vfs)
4488 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4489
4490 /* When the HW is in SRIOV capable configuration, the PF-pool
4491 * resources are given to PF during driver load, if there are no
4492 * old VFs. This facility is not available in BE3 FW.
4493 * Also, this is done by FW in Lancer chip.
4494 */
4495 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4496 be_calculate_vf_res(adapter, 0, &vft_res);
4497 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4498 &vft_res);
4499 if (status)
4500 dev_err(&adapter->pdev->dev,
4501 "Failed to optimize SRIOV resources\n");
4502 }
4503}
4504
4505static int be_get_resources(struct be_adapter *adapter)
4506{
4507 struct device *dev = &adapter->pdev->dev;
4508 struct be_resources res = {0};
4509 int status;
4510
4511 /* For Lancer, SH etc read per-function resource limits from FW.
4512 * GET_FUNC_CONFIG returns per function guaranteed limits.
4513 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4514 */
4515 if (BEx_chip(adapter)) {
4516 BEx_get_resources(adapter, &res);
4517 } else {
4518 status = be_cmd_get_func_config(adapter, &res);
4519 if (status)
4520 return status;
4521
4522 /* If a deafault RXQ must be created, we'll use up one RSSQ*/
4523 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4524 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4525 res.max_rss_qs -= 1;
4526 }
4527
4528 /* If RoCE is supported stash away half the EQs for RoCE */
4529 res.max_nic_evt_qs = be_roce_supported(adapter) ?
4530 res.max_evt_qs / 2 : res.max_evt_qs;
4531 adapter->res = res;
4532
4533 /* If FW supports RSS default queue, then skip creating non-RSS
4534 * queue for non-IP traffic.
4535 */
4536 adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4537 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4538
4539 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4540 be_max_txqs(adapter), be_max_rxqs(adapter),
4541 be_max_rss(adapter), be_max_nic_eqs(adapter),
4542 be_max_vfs(adapter));
4543 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4544 be_max_uc(adapter), be_max_mc(adapter),
4545 be_max_vlans(adapter));
4546
4547 /* Ensure RX and TX queues are created in pairs at init time */
4548 adapter->cfg_num_rx_irqs =
4549 min_t(u16, netif_get_num_default_rss_queues(),
4550 be_max_qp_irqs(adapter));
4551 adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;
4552 return 0;
4553}
4554
4555static int be_get_config(struct be_adapter *adapter)
4556{
4557 int status, level;
4558 u16 profile_id;
4559
4560 status = be_cmd_get_cntl_attributes(adapter);
4561 if (status)
4562 return status;
4563
4564 status = be_cmd_query_fw_cfg(adapter);
4565 if (status)
4566 return status;
4567
4568 if (!lancer_chip(adapter) && be_physfn(adapter))
4569 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4570
4571 if (BEx_chip(adapter)) {
4572 level = be_cmd_get_fw_log_level(adapter);
4573 adapter->msg_enable =
4574 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4575 }
4576
4577 be_cmd_get_acpi_wol_cap(adapter);
4578 pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);
4579 pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);
4580
4581 be_cmd_query_port_name(adapter);
4582
4583 if (be_physfn(adapter)) {
4584 status = be_cmd_get_active_profile(adapter, &profile_id);
4585 if (!status)
4586 dev_info(&adapter->pdev->dev,
4587 "Using profile 0x%x\n", profile_id);
4588 }
4589
4590 return 0;
4591}
4592
4593static int be_mac_setup(struct be_adapter *adapter)
4594{
4595 u8 mac[ETH_ALEN];
4596 int status;
4597
4598 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4599 status = be_cmd_get_perm_mac(adapter, mac);
4600 if (status)
4601 return status;
4602
4603 eth_hw_addr_set(adapter->netdev, mac);
4604 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4605
4606 /* Initial MAC for BE3 VFs is already programmed by PF */
4607 if (BEx_chip(adapter) && be_virtfn(adapter))
4608 memcpy(adapter->dev_mac, mac, ETH_ALEN);
4609 }
4610
4611 return 0;
4612}
4613
4614static void be_schedule_worker(struct be_adapter *adapter)
4615{
4616 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
4617 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4618}
4619
4620static void be_destroy_err_recovery_workq(void)
4621{
4622 if (!be_err_recovery_workq)
4623 return;
4624
4625 destroy_workqueue(be_err_recovery_workq);
4626 be_err_recovery_workq = NULL;
4627}
4628
4629static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4630{
4631 struct be_error_recovery *err_rec = &adapter->error_recovery;
4632
4633 if (!be_err_recovery_workq)
4634 return;
4635
4636 queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work,
4637 msecs_to_jiffies(delay));
4638 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4639}
4640
4641static int be_setup_queues(struct be_adapter *adapter)
4642{
4643 struct net_device *netdev = adapter->netdev;
4644 int status;
4645
4646 status = be_evt_queues_create(adapter);
4647 if (status)
4648 goto err;
4649
4650 status = be_tx_qs_create(adapter);
4651 if (status)
4652 goto err;
4653
4654 status = be_rx_cqs_create(adapter);
4655 if (status)
4656 goto err;
4657
4658 status = be_mcc_queues_create(adapter);
4659 if (status)
4660 goto err;
4661
4662 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4663 if (status)
4664 goto err;
4665
4666 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4667 if (status)
4668 goto err;
4669
4670 return 0;
4671err:
4672 dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4673 return status;
4674}
4675
4676static int be_if_create(struct be_adapter *adapter)
4677{
4678 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4679 u32 cap_flags = be_if_cap_flags(adapter);
4680
4681 /* alloc required memory for other filtering fields */
4682 adapter->pmac_id = kcalloc(be_max_uc(adapter),
4683 sizeof(*adapter->pmac_id), GFP_KERNEL);
4684 if (!adapter->pmac_id)
4685 return -ENOMEM;
4686
4687 adapter->mc_list = kcalloc(be_max_mc(adapter),
4688 sizeof(*adapter->mc_list), GFP_KERNEL);
4689 if (!adapter->mc_list)
4690 return -ENOMEM;
4691
4692 adapter->uc_list = kcalloc(be_max_uc(adapter),
4693 sizeof(*adapter->uc_list), GFP_KERNEL);
4694 if (!adapter->uc_list)
4695 return -ENOMEM;
4696
4697 if (adapter->cfg_num_rx_irqs == 1)
4698 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4699
4700 en_flags &= cap_flags;
4701 /* will enable all the needed filter flags in be_open() */
4702 return be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4703 &adapter->if_handle, 0);
4704}
4705
4706int be_update_queues(struct be_adapter *adapter)
4707{
4708 struct net_device *netdev = adapter->netdev;
4709 int status;
4710
4711 if (netif_running(netdev)) {
4712 /* be_tx_timeout() must not run concurrently with this
4713 * function, synchronize with an already-running dev_watchdog
4714 */
4715 netif_tx_lock_bh(netdev);
4716 /* device cannot transmit now, avoid dev_watchdog timeouts */
4717 netif_carrier_off(netdev);
4718 netif_tx_unlock_bh(netdev);
4719
4720 be_close(netdev);
4721 }
4722
4723 be_cancel_worker(adapter);
4724
4725 /* If any vectors have been shared with RoCE we cannot re-program
4726 * the MSIx table.
4727 */
4728 if (!adapter->num_msix_roce_vec)
4729 be_msix_disable(adapter);
4730
4731 be_clear_queues(adapter);
4732 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4733 if (status)
4734 return status;
4735
4736 if (!msix_enabled(adapter)) {
4737 status = be_msix_enable(adapter);
4738 if (status)
4739 return status;
4740 }
4741
4742 status = be_if_create(adapter);
4743 if (status)
4744 return status;
4745
4746 status = be_setup_queues(adapter);
4747 if (status)
4748 return status;
4749
4750 be_schedule_worker(adapter);
4751
4752 /* The IF was destroyed and re-created. We need to clear
4753 * all promiscuous flags valid for the destroyed IF.
4754 * Without this promisc mode is not restored during
4755 * be_open() because the driver thinks that it is
4756 * already enabled in HW.
4757 */
4758 adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS;
4759
4760 if (netif_running(netdev))
4761 status = be_open(netdev);
4762
4763 return status;
4764}
4765
4766static inline int fw_major_num(const char *fw_ver)
4767{
4768 int fw_major = 0, i;
4769
4770 i = sscanf(fw_ver, "%d.", &fw_major);
4771 if (i != 1)
4772 return 0;
4773
4774 return fw_major;
4775}
4776
4777/* If it is error recovery, FLR the PF
4778 * Else if any VFs are already enabled don't FLR the PF
4779 */
4780static bool be_reset_required(struct be_adapter *adapter)
4781{
4782 if (be_error_recovering(adapter))
4783 return true;
4784 else
4785 return pci_num_vf(adapter->pdev) == 0;
4786}
4787
4788/* Wait for the FW to be ready and perform the required initialization */
4789static int be_func_init(struct be_adapter *adapter)
4790{
4791 int status;
4792
4793 status = be_fw_wait_ready(adapter);
4794 if (status)
4795 return status;
4796
4797 /* FW is now ready; clear errors to allow cmds/doorbell */
4798 be_clear_error(adapter, BE_CLEAR_ALL);
4799
4800 if (be_reset_required(adapter)) {
4801 status = be_cmd_reset_function(adapter);
4802 if (status)
4803 return status;
4804
4805 /* Wait for interrupts to quiesce after an FLR */
4806 msleep(100);
4807 }
4808
4809 /* Tell FW we're ready to fire cmds */
4810 status = be_cmd_fw_init(adapter);
4811 if (status)
4812 return status;
4813
4814 /* Allow interrupts for other ULPs running on NIC function */
4815 be_intr_set(adapter, true);
4816
4817 return 0;
4818}
4819
4820static int be_setup(struct be_adapter *adapter)
4821{
4822 struct device *dev = &adapter->pdev->dev;
4823 int status;
4824
4825 status = be_func_init(adapter);
4826 if (status)
4827 return status;
4828
4829 be_setup_init(adapter);
4830
4831 if (!lancer_chip(adapter))
4832 be_cmd_req_native_mode(adapter);
4833
4834 /* invoke this cmd first to get pf_num and vf_num which are needed
4835 * for issuing profile related cmds
4836 */
4837 if (!BEx_chip(adapter)) {
4838 status = be_cmd_get_func_config(adapter, NULL);
4839 if (status)
4840 return status;
4841 }
4842
4843 status = be_get_config(adapter);
4844 if (status)
4845 goto err;
4846
4847 if (!BE2_chip(adapter) && be_physfn(adapter))
4848 be_alloc_sriov_res(adapter);
4849
4850 status = be_get_resources(adapter);
4851 if (status)
4852 goto err;
4853
4854 status = be_msix_enable(adapter);
4855 if (status)
4856 goto err;
4857
4858 /* will enable all the needed filter flags in be_open() */
4859 status = be_if_create(adapter);
4860 if (status)
4861 goto err;
4862
4863 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4864 rtnl_lock();
4865 status = be_setup_queues(adapter);
4866 rtnl_unlock();
4867 if (status)
4868 goto err;
4869
4870 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4871
4872 status = be_mac_setup(adapter);
4873 if (status)
4874 goto err;
4875
4876 be_cmd_get_fw_ver(adapter);
4877 dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4878
4879 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4880 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4881 adapter->fw_ver);
4882 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4883 }
4884
4885 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4886 adapter->rx_fc);
4887 if (status)
4888 be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4889 &adapter->rx_fc);
4890
4891 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4892 adapter->tx_fc, adapter->rx_fc);
4893
4894 if (be_physfn(adapter))
4895 be_cmd_set_logical_link_config(adapter,
4896 IFLA_VF_LINK_STATE_AUTO, 0);
4897
4898 /* BE3 EVB echoes broadcast/multicast packets back to PF's vport
4899 * confusing a linux bridge or OVS that it might be connected to.
4900 * Set the EVB to PASSTHRU mode which effectively disables the EVB
4901 * when SRIOV is not enabled.
4902 */
4903 if (BE3_chip(adapter))
4904 be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,
4905 PORT_FWD_TYPE_PASSTHRU, 0);
4906
4907 if (adapter->num_vfs)
4908 be_vf_setup(adapter);
4909
4910 status = be_cmd_get_phy_info(adapter);
4911 if (!status && be_pause_supported(adapter))
4912 adapter->phy.fc_autoneg = 1;
4913
4914 if (be_physfn(adapter) && !lancer_chip(adapter))
4915 be_cmd_set_features(adapter);
4916
4917 be_schedule_worker(adapter);
4918 adapter->flags |= BE_FLAGS_SETUP_DONE;
4919 return 0;
4920err:
4921 be_clear(adapter);
4922 return status;
4923}
4924
4925#ifdef CONFIG_NET_POLL_CONTROLLER
4926static void be_netpoll(struct net_device *netdev)
4927{
4928 struct be_adapter *adapter = netdev_priv(netdev);
4929 struct be_eq_obj *eqo;
4930 int i;
4931
4932 for_all_evt_queues(adapter, eqo, i) {
4933 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4934 napi_schedule(&eqo->napi);
4935 }
4936}
4937#endif
4938
4939int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4940{
4941 const struct firmware *fw;
4942 int status;
4943
4944 if (!netif_running(adapter->netdev)) {
4945 dev_err(&adapter->pdev->dev,
4946 "Firmware load not allowed (interface is down)\n");
4947 return -ENETDOWN;
4948 }
4949
4950 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4951 if (status)
4952 goto fw_exit;
4953
4954 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4955
4956 if (lancer_chip(adapter))
4957 status = lancer_fw_download(adapter, fw);
4958 else
4959 status = be_fw_download(adapter, fw);
4960
4961 if (!status)
4962 be_cmd_get_fw_ver(adapter);
4963
4964fw_exit:
4965 release_firmware(fw);
4966 return status;
4967}
4968
4969static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4970 u16 flags, struct netlink_ext_ack *extack)
4971{
4972 struct be_adapter *adapter = netdev_priv(dev);
4973 struct nlattr *attr, *br_spec;
4974 int rem;
4975 int status = 0;
4976 u16 mode = 0;
4977
4978 if (!sriov_enabled(adapter))
4979 return -EOPNOTSUPP;
4980
4981 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4982 if (!br_spec)
4983 return -EINVAL;
4984
4985 nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) {
4986 mode = nla_get_u16(attr);
4987 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4988 return -EOPNOTSUPP;
4989
4990 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4991 return -EINVAL;
4992
4993 status = be_cmd_set_hsw_config(adapter, 0, 0,
4994 adapter->if_handle,
4995 mode == BRIDGE_MODE_VEPA ?
4996 PORT_FWD_TYPE_VEPA :
4997 PORT_FWD_TYPE_VEB, 0);
4998 if (status)
4999 goto err;
5000
5001 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
5002 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5003
5004 return status;
5005 }
5006err:
5007 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
5008 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5009
5010 return status;
5011}
5012
5013static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
5014 struct net_device *dev, u32 filter_mask,
5015 int nlflags)
5016{
5017 struct be_adapter *adapter = netdev_priv(dev);
5018 int status = 0;
5019 u8 hsw_mode;
5020
5021 /* BE and Lancer chips support VEB mode only */
5022 if (BEx_chip(adapter) || lancer_chip(adapter)) {
5023 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
5024 if (!pci_sriov_get_totalvfs(adapter->pdev))
5025 return 0;
5026 hsw_mode = PORT_FWD_TYPE_VEB;
5027 } else {
5028 status = be_cmd_get_hsw_config(adapter, NULL, 0,
5029 adapter->if_handle, &hsw_mode,
5030 NULL);
5031 if (status)
5032 return 0;
5033
5034 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
5035 return 0;
5036 }
5037
5038 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
5039 hsw_mode == PORT_FWD_TYPE_VEPA ?
5040 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
5041 0, 0, nlflags, filter_mask, NULL);
5042}
5043
5044static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter,
5045 void (*func)(struct work_struct *))
5046{
5047 struct be_cmd_work *work;
5048
5049 work = kzalloc(sizeof(*work), GFP_ATOMIC);
5050 if (!work) {
5051 dev_err(&adapter->pdev->dev,
5052 "be_work memory allocation failed\n");
5053 return NULL;
5054 }
5055
5056 INIT_WORK(&work->work, func);
5057 work->adapter = adapter;
5058 return work;
5059}
5060
5061static netdev_features_t be_features_check(struct sk_buff *skb,
5062 struct net_device *dev,
5063 netdev_features_t features)
5064{
5065 struct be_adapter *adapter = netdev_priv(dev);
5066 u8 l4_hdr = 0;
5067
5068 if (skb_is_gso(skb)) {
5069 /* IPv6 TSO requests with extension hdrs are a problem
5070 * to Lancer and BE3 HW. Disable TSO6 feature.
5071 */
5072 if (!skyhawk_chip(adapter) && is_ipv6_ext_hdr(skb))
5073 features &= ~NETIF_F_TSO6;
5074
5075 /* Lancer cannot handle the packet with MSS less than 256.
5076 * Also it can't handle a TSO packet with a single segment
5077 * Disable the GSO support in such cases
5078 */
5079 if (lancer_chip(adapter) &&
5080 (skb_shinfo(skb)->gso_size < 256 ||
5081 skb_shinfo(skb)->gso_segs == 1))
5082 features &= ~NETIF_F_GSO_MASK;
5083 }
5084
5085 /* The code below restricts offload features for some tunneled and
5086 * Q-in-Q packets.
5087 * Offload features for normal (non tunnel) packets are unchanged.
5088 */
5089 features = vlan_features_check(skb, features);
5090 if (!skb->encapsulation ||
5091 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
5092 return features;
5093
5094 /* It's an encapsulated packet and VxLAN offloads are enabled. We
5095 * should disable tunnel offload features if it's not a VxLAN packet,
5096 * as tunnel offloads have been enabled only for VxLAN. This is done to
5097 * allow other tunneled traffic like GRE work fine while VxLAN
5098 * offloads are configured in Skyhawk-R.
5099 */
5100 switch (vlan_get_protocol(skb)) {
5101 case htons(ETH_P_IP):
5102 l4_hdr = ip_hdr(skb)->protocol;
5103 break;
5104 case htons(ETH_P_IPV6):
5105 l4_hdr = ipv6_hdr(skb)->nexthdr;
5106 break;
5107 default:
5108 return features;
5109 }
5110
5111 if (l4_hdr != IPPROTO_UDP ||
5112 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
5113 skb->inner_protocol != htons(ETH_P_TEB) ||
5114 skb_inner_mac_header(skb) - skb_transport_header(skb) !=
5115 sizeof(struct udphdr) + sizeof(struct vxlanhdr) ||
5116 !adapter->vxlan_port ||
5117 udp_hdr(skb)->dest != adapter->vxlan_port)
5118 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
5119
5120 return features;
5121}
5122
5123static int be_get_phys_port_id(struct net_device *dev,
5124 struct netdev_phys_item_id *ppid)
5125{
5126 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
5127 struct be_adapter *adapter = netdev_priv(dev);
5128 u8 *id;
5129
5130 if (MAX_PHYS_ITEM_ID_LEN < id_len)
5131 return -ENOSPC;
5132
5133 ppid->id[0] = adapter->hba_port_num + 1;
5134 id = &ppid->id[1];
5135 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
5136 i--, id += CNTL_SERIAL_NUM_WORD_SZ)
5137 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
5138
5139 ppid->id_len = id_len;
5140
5141 return 0;
5142}
5143
5144static void be_set_rx_mode(struct net_device *dev)
5145{
5146 struct be_adapter *adapter = netdev_priv(dev);
5147 struct be_cmd_work *work;
5148
5149 work = be_alloc_work(adapter, be_work_set_rx_mode);
5150 if (work)
5151 queue_work(be_wq, &work->work);
5152}
5153
5154static const struct net_device_ops be_netdev_ops = {
5155 .ndo_open = be_open,
5156 .ndo_stop = be_close,
5157 .ndo_start_xmit = be_xmit,
5158 .ndo_set_rx_mode = be_set_rx_mode,
5159 .ndo_set_mac_address = be_mac_addr_set,
5160 .ndo_get_stats64 = be_get_stats64,
5161 .ndo_validate_addr = eth_validate_addr,
5162 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
5163 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
5164 .ndo_set_vf_mac = be_set_vf_mac,
5165 .ndo_set_vf_vlan = be_set_vf_vlan,
5166 .ndo_set_vf_rate = be_set_vf_tx_rate,
5167 .ndo_get_vf_config = be_get_vf_config,
5168 .ndo_set_vf_link_state = be_set_vf_link_state,
5169 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,
5170 .ndo_tx_timeout = be_tx_timeout,
5171#ifdef CONFIG_NET_POLL_CONTROLLER
5172 .ndo_poll_controller = be_netpoll,
5173#endif
5174 .ndo_bridge_setlink = be_ndo_bridge_setlink,
5175 .ndo_bridge_getlink = be_ndo_bridge_getlink,
5176 .ndo_features_check = be_features_check,
5177 .ndo_get_phys_port_id = be_get_phys_port_id,
5178};
5179
5180static void be_netdev_init(struct net_device *netdev)
5181{
5182 struct be_adapter *adapter = netdev_priv(netdev);
5183
5184 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5185 NETIF_F_GSO_UDP_TUNNEL |
5186 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
5187 NETIF_F_HW_VLAN_CTAG_TX;
5188 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
5189 netdev->hw_features |= NETIF_F_RXHASH;
5190
5191 netdev->features |= netdev->hw_features |
5192 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER |
5193 NETIF_F_HIGHDMA;
5194
5195 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5196 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
5197
5198 netdev->priv_flags |= IFF_UNICAST_FLT;
5199
5200 netdev->flags |= IFF_MULTICAST;
5201
5202 netif_set_tso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
5203
5204 netdev->netdev_ops = &be_netdev_ops;
5205
5206 netdev->ethtool_ops = &be_ethtool_ops;
5207
5208 if (!lancer_chip(adapter) && !BEx_chip(adapter) && !be_is_mc(adapter))
5209 netdev->udp_tunnel_nic_info = &be_udp_tunnels;
5210
5211 /* MTU range: 256 - 9000 */
5212 netdev->min_mtu = BE_MIN_MTU;
5213 netdev->max_mtu = BE_MAX_MTU;
5214}
5215
5216static void be_cleanup(struct be_adapter *adapter)
5217{
5218 struct net_device *netdev = adapter->netdev;
5219
5220 rtnl_lock();
5221 netif_device_detach(netdev);
5222 if (netif_running(netdev))
5223 be_close(netdev);
5224 rtnl_unlock();
5225
5226 be_clear(adapter);
5227}
5228
5229static int be_resume(struct be_adapter *adapter)
5230{
5231 struct net_device *netdev = adapter->netdev;
5232 int status;
5233
5234 status = be_setup(adapter);
5235 if (status)
5236 return status;
5237
5238 rtnl_lock();
5239 if (netif_running(netdev))
5240 status = be_open(netdev);
5241 rtnl_unlock();
5242
5243 if (status)
5244 return status;
5245
5246 netif_device_attach(netdev);
5247
5248 return 0;
5249}
5250
5251static void be_soft_reset(struct be_adapter *adapter)
5252{
5253 u32 val;
5254
5255 dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n");
5256 val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5257 val |= SLIPORT_SOFTRESET_SR_MASK;
5258 iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5259}
5260
5261static bool be_err_is_recoverable(struct be_adapter *adapter)
5262{
5263 struct be_error_recovery *err_rec = &adapter->error_recovery;
5264 unsigned long initial_idle_time =
5265 msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME);
5266 unsigned long recovery_interval =
5267 msecs_to_jiffies(ERR_RECOVERY_INTERVAL);
5268 u16 ue_err_code;
5269 u32 val;
5270
5271 val = be_POST_stage_get(adapter);
5272 if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR)
5273 return false;
5274 ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK;
5275 if (ue_err_code == 0)
5276 return false;
5277
5278 dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n",
5279 ue_err_code);
5280
5281 if (time_before_eq(jiffies - err_rec->probe_time, initial_idle_time)) {
5282 dev_err(&adapter->pdev->dev,
5283 "Cannot recover within %lu sec from driver load\n",
5284 jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC);
5285 return false;
5286 }
5287
5288 if (err_rec->last_recovery_time && time_before_eq(
5289 jiffies - err_rec->last_recovery_time, recovery_interval)) {
5290 dev_err(&adapter->pdev->dev,
5291 "Cannot recover within %lu sec from last recovery\n",
5292 jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC);
5293 return false;
5294 }
5295
5296 if (ue_err_code == err_rec->last_err_code) {
5297 dev_err(&adapter->pdev->dev,
5298 "Cannot recover from a consecutive TPE error\n");
5299 return false;
5300 }
5301
5302 err_rec->last_recovery_time = jiffies;
5303 err_rec->last_err_code = ue_err_code;
5304 return true;
5305}
5306
5307static int be_tpe_recover(struct be_adapter *adapter)
5308{
5309 struct be_error_recovery *err_rec = &adapter->error_recovery;
5310 int status = -EAGAIN;
5311 u32 val;
5312
5313 switch (err_rec->recovery_state) {
5314 case ERR_RECOVERY_ST_NONE:
5315 err_rec->recovery_state = ERR_RECOVERY_ST_DETECT;
5316 err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION;
5317 break;
5318
5319 case ERR_RECOVERY_ST_DETECT:
5320 val = be_POST_stage_get(adapter);
5321 if ((val & POST_STAGE_RECOVERABLE_ERR) !=
5322 POST_STAGE_RECOVERABLE_ERR) {
5323 dev_err(&adapter->pdev->dev,
5324 "Unrecoverable HW error detected: 0x%x\n", val);
5325 status = -EINVAL;
5326 err_rec->resched_delay = 0;
5327 break;
5328 }
5329
5330 dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n");
5331
5332 /* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR
5333 * milliseconds before it checks for final error status in
5334 * SLIPORT_SEMAPHORE to determine if recovery criteria is met.
5335 * If it does, then PF0 initiates a Soft Reset.
5336 */
5337 if (adapter->pf_num == 0) {
5338 err_rec->recovery_state = ERR_RECOVERY_ST_RESET;
5339 err_rec->resched_delay = err_rec->ue_to_reset_time -
5340 ERR_RECOVERY_UE_DETECT_DURATION;
5341 break;
5342 }
5343
5344 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5345 err_rec->resched_delay = err_rec->ue_to_poll_time -
5346 ERR_RECOVERY_UE_DETECT_DURATION;
5347 break;
5348
5349 case ERR_RECOVERY_ST_RESET:
5350 if (!be_err_is_recoverable(adapter)) {
5351 dev_err(&adapter->pdev->dev,
5352 "Failed to meet recovery criteria\n");
5353 status = -EIO;
5354 err_rec->resched_delay = 0;
5355 break;
5356 }
5357 be_soft_reset(adapter);
5358 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5359 err_rec->resched_delay = err_rec->ue_to_poll_time -
5360 err_rec->ue_to_reset_time;
5361 break;
5362
5363 case ERR_RECOVERY_ST_PRE_POLL:
5364 err_rec->recovery_state = ERR_RECOVERY_ST_REINIT;
5365 err_rec->resched_delay = 0;
5366 status = 0; /* done */
5367 break;
5368
5369 default:
5370 status = -EINVAL;
5371 err_rec->resched_delay = 0;
5372 break;
5373 }
5374
5375 return status;
5376}
5377
5378static int be_err_recover(struct be_adapter *adapter)
5379{
5380 int status;
5381
5382 if (!lancer_chip(adapter)) {
5383 if (!adapter->error_recovery.recovery_supported ||
5384 adapter->priv_flags & BE_DISABLE_TPE_RECOVERY)
5385 return -EIO;
5386 status = be_tpe_recover(adapter);
5387 if (status)
5388 goto err;
5389 }
5390
5391 /* Wait for adapter to reach quiescent state before
5392 * destroying queues
5393 */
5394 status = be_fw_wait_ready(adapter);
5395 if (status)
5396 goto err;
5397
5398 adapter->flags |= BE_FLAGS_TRY_RECOVERY;
5399
5400 be_cleanup(adapter);
5401
5402 status = be_resume(adapter);
5403 if (status)
5404 goto err;
5405
5406 adapter->flags &= ~BE_FLAGS_TRY_RECOVERY;
5407
5408err:
5409 return status;
5410}
5411
5412static void be_err_detection_task(struct work_struct *work)
5413{
5414 struct be_error_recovery *err_rec =
5415 container_of(work, struct be_error_recovery,
5416 err_detection_work.work);
5417 struct be_adapter *adapter =
5418 container_of(err_rec, struct be_adapter,
5419 error_recovery);
5420 u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY;
5421 struct device *dev = &adapter->pdev->dev;
5422 int recovery_status;
5423
5424 be_detect_error(adapter);
5425 if (!be_check_error(adapter, BE_ERROR_HW))
5426 goto reschedule_task;
5427
5428 recovery_status = be_err_recover(adapter);
5429 if (!recovery_status) {
5430 err_rec->recovery_retries = 0;
5431 err_rec->recovery_state = ERR_RECOVERY_ST_NONE;
5432 dev_info(dev, "Adapter recovery successful\n");
5433 goto reschedule_task;
5434 } else if (!lancer_chip(adapter) && err_rec->resched_delay) {
5435 /* BEx/SH recovery state machine */
5436 if (adapter->pf_num == 0 &&
5437 err_rec->recovery_state > ERR_RECOVERY_ST_DETECT)
5438 dev_err(&adapter->pdev->dev,
5439 "Adapter recovery in progress\n");
5440 resched_delay = err_rec->resched_delay;
5441 goto reschedule_task;
5442 } else if (lancer_chip(adapter) && be_virtfn(adapter)) {
5443 /* For VFs, check if PF have allocated resources
5444 * every second.
5445 */
5446 dev_err(dev, "Re-trying adapter recovery\n");
5447 goto reschedule_task;
5448 } else if (lancer_chip(adapter) && err_rec->recovery_retries++ <
5449 ERR_RECOVERY_MAX_RETRY_COUNT) {
5450 /* In case of another error during recovery, it takes 30 sec
5451 * for adapter to come out of error. Retry error recovery after
5452 * this time interval.
5453 */
5454 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
5455 resched_delay = ERR_RECOVERY_RETRY_DELAY;
5456 goto reschedule_task;
5457 } else {
5458 dev_err(dev, "Adapter recovery failed\n");
5459 dev_err(dev, "Please reboot server to recover\n");
5460 }
5461
5462 return;
5463
5464reschedule_task:
5465 be_schedule_err_detection(adapter, resched_delay);
5466}
5467
5468static void be_log_sfp_info(struct be_adapter *adapter)
5469{
5470 int status;
5471
5472 status = be_cmd_query_sfp_info(adapter);
5473 if (!status) {
5474 dev_err(&adapter->pdev->dev,
5475 "Port %c: %s Vendor: %s part no: %s",
5476 adapter->port_name,
5477 be_misconfig_evt_port_state[adapter->phy_state],
5478 adapter->phy.vendor_name,
5479 adapter->phy.vendor_pn);
5480 }
5481 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
5482}
5483
5484static void be_worker(struct work_struct *work)
5485{
5486 struct be_adapter *adapter =
5487 container_of(work, struct be_adapter, work.work);
5488 struct be_rx_obj *rxo;
5489 int i;
5490
5491 if (be_physfn(adapter) &&
5492 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5493 be_cmd_get_die_temperature(adapter);
5494
5495 /* when interrupts are not yet enabled, just reap any pending
5496 * mcc completions
5497 */
5498 if (!netif_running(adapter->netdev)) {
5499 local_bh_disable();
5500 be_process_mcc(adapter);
5501 local_bh_enable();
5502 goto reschedule;
5503 }
5504
5505 if (!adapter->stats_cmd_sent) {
5506 if (lancer_chip(adapter))
5507 lancer_cmd_get_pport_stats(adapter,
5508 &adapter->stats_cmd);
5509 else
5510 be_cmd_get_stats(adapter, &adapter->stats_cmd);
5511 }
5512
5513 for_all_rx_queues(adapter, rxo, i) {
5514 /* Replenish RX-queues starved due to memory
5515 * allocation failures.
5516 */
5517 if (rxo->rx_post_starved)
5518 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5519 }
5520
5521 /* EQ-delay update for Skyhawk is done while notifying EQ */
5522 if (!skyhawk_chip(adapter))
5523 be_eqd_update(adapter, false);
5524
5525 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5526 be_log_sfp_info(adapter);
5527
5528reschedule:
5529 adapter->work_counter++;
5530 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
5531}
5532
5533static void be_unmap_pci_bars(struct be_adapter *adapter)
5534{
5535 if (adapter->csr)
5536 pci_iounmap(adapter->pdev, adapter->csr);
5537 if (adapter->db)
5538 pci_iounmap(adapter->pdev, adapter->db);
5539 if (adapter->pcicfg && adapter->pcicfg_mapped)
5540 pci_iounmap(adapter->pdev, adapter->pcicfg);
5541}
5542
5543static int db_bar(struct be_adapter *adapter)
5544{
5545 if (lancer_chip(adapter) || be_virtfn(adapter))
5546 return 0;
5547 else
5548 return 4;
5549}
5550
5551static int be_roce_map_pci_bars(struct be_adapter *adapter)
5552{
5553 if (skyhawk_chip(adapter)) {
5554 adapter->roce_db.size = 4096;
5555 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5556 db_bar(adapter));
5557 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5558 db_bar(adapter));
5559 }
5560 return 0;
5561}
5562
5563static int be_map_pci_bars(struct be_adapter *adapter)
5564{
5565 struct pci_dev *pdev = adapter->pdev;
5566 u8 __iomem *addr;
5567 u32 sli_intf;
5568
5569 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5570 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5571 SLI_INTF_FAMILY_SHIFT;
5572 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5573
5574 if (BEx_chip(adapter) && be_physfn(adapter)) {
5575 adapter->csr = pci_iomap(pdev, 2, 0);
5576 if (!adapter->csr)
5577 return -ENOMEM;
5578 }
5579
5580 addr = pci_iomap(pdev, db_bar(adapter), 0);
5581 if (!addr)
5582 goto pci_map_err;
5583 adapter->db = addr;
5584
5585 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5586 if (be_physfn(adapter)) {
5587 /* PCICFG is the 2nd BAR in BE2 */
5588 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5589 if (!addr)
5590 goto pci_map_err;
5591 adapter->pcicfg = addr;
5592 adapter->pcicfg_mapped = true;
5593 } else {
5594 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5595 adapter->pcicfg_mapped = false;
5596 }
5597 }
5598
5599 be_roce_map_pci_bars(adapter);
5600 return 0;
5601
5602pci_map_err:
5603 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5604 be_unmap_pci_bars(adapter);
5605 return -ENOMEM;
5606}
5607
5608static void be_drv_cleanup(struct be_adapter *adapter)
5609{
5610 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5611 struct device *dev = &adapter->pdev->dev;
5612
5613 if (mem->va)
5614 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5615
5616 mem = &adapter->rx_filter;
5617 if (mem->va)
5618 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5619
5620 mem = &adapter->stats_cmd;
5621 if (mem->va)
5622 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5623}
5624
5625/* Allocate and initialize various fields in be_adapter struct */
5626static int be_drv_init(struct be_adapter *adapter)
5627{
5628 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5629 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5630 struct be_dma_mem *rx_filter = &adapter->rx_filter;
5631 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5632 struct device *dev = &adapter->pdev->dev;
5633 int status = 0;
5634
5635 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5636 mbox_mem_alloc->va = dma_alloc_coherent(dev, mbox_mem_alloc->size,
5637 &mbox_mem_alloc->dma,
5638 GFP_KERNEL);
5639 if (!mbox_mem_alloc->va)
5640 return -ENOMEM;
5641
5642 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5643 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5644 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5645
5646 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5647 rx_filter->va = dma_alloc_coherent(dev, rx_filter->size,
5648 &rx_filter->dma, GFP_KERNEL);
5649 if (!rx_filter->va) {
5650 status = -ENOMEM;
5651 goto free_mbox;
5652 }
5653
5654 if (lancer_chip(adapter))
5655 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5656 else if (BE2_chip(adapter))
5657 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5658 else if (BE3_chip(adapter))
5659 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5660 else
5661 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5662 stats_cmd->va = dma_alloc_coherent(dev, stats_cmd->size,
5663 &stats_cmd->dma, GFP_KERNEL);
5664 if (!stats_cmd->va) {
5665 status = -ENOMEM;
5666 goto free_rx_filter;
5667 }
5668
5669 mutex_init(&adapter->mbox_lock);
5670 mutex_init(&adapter->rx_filter_lock);
5671 spin_lock_init(&adapter->mcc_lock);
5672 spin_lock_init(&adapter->mcc_cq_lock);
5673 init_completion(&adapter->et_cmd_compl);
5674
5675 pci_save_state(adapter->pdev);
5676
5677 INIT_DELAYED_WORK(&adapter->work, be_worker);
5678
5679 adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE;
5680 adapter->error_recovery.resched_delay = 0;
5681 INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work,
5682 be_err_detection_task);
5683
5684 adapter->rx_fc = true;
5685 adapter->tx_fc = true;
5686
5687 /* Must be a power of 2 or else MODULO will BUG_ON */
5688 adapter->be_get_temp_freq = 64;
5689
5690 return 0;
5691
5692free_rx_filter:
5693 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5694free_mbox:
5695 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5696 mbox_mem_alloc->dma);
5697 return status;
5698}
5699
5700static void be_remove(struct pci_dev *pdev)
5701{
5702 struct be_adapter *adapter = pci_get_drvdata(pdev);
5703
5704 if (!adapter)
5705 return;
5706
5707 be_roce_dev_remove(adapter);
5708 be_intr_set(adapter, false);
5709
5710 be_cancel_err_detection(adapter);
5711
5712 unregister_netdev(adapter->netdev);
5713
5714 be_clear(adapter);
5715
5716 if (!pci_vfs_assigned(adapter->pdev))
5717 be_cmd_reset_function(adapter);
5718
5719 /* tell fw we're done with firing cmds */
5720 be_cmd_fw_clean(adapter);
5721
5722 be_unmap_pci_bars(adapter);
5723 be_drv_cleanup(adapter);
5724
5725 pci_release_regions(pdev);
5726 pci_disable_device(pdev);
5727
5728 free_netdev(adapter->netdev);
5729}
5730
5731static ssize_t be_hwmon_show_temp(struct device *dev,
5732 struct device_attribute *dev_attr,
5733 char *buf)
5734{
5735 struct be_adapter *adapter = dev_get_drvdata(dev);
5736
5737 /* Unit: millidegree Celsius */
5738 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5739 return -EIO;
5740 else
5741 return sprintf(buf, "%u\n",
5742 adapter->hwmon_info.be_on_die_temp * 1000);
5743}
5744
5745static SENSOR_DEVICE_ATTR(temp1_input, 0444,
5746 be_hwmon_show_temp, NULL, 1);
5747
5748static struct attribute *be_hwmon_attrs[] = {
5749 &sensor_dev_attr_temp1_input.dev_attr.attr,
5750 NULL
5751};
5752
5753ATTRIBUTE_GROUPS(be_hwmon);
5754
5755static char *mc_name(struct be_adapter *adapter)
5756{
5757 char *str = ""; /* default */
5758
5759 switch (adapter->mc_type) {
5760 case UMC:
5761 str = "UMC";
5762 break;
5763 case FLEX10:
5764 str = "FLEX10";
5765 break;
5766 case vNIC1:
5767 str = "vNIC-1";
5768 break;
5769 case nPAR:
5770 str = "nPAR";
5771 break;
5772 case UFP:
5773 str = "UFP";
5774 break;
5775 case vNIC2:
5776 str = "vNIC-2";
5777 break;
5778 default:
5779 str = "";
5780 }
5781
5782 return str;
5783}
5784
5785static inline char *func_name(struct be_adapter *adapter)
5786{
5787 return be_physfn(adapter) ? "PF" : "VF";
5788}
5789
5790static inline char *nic_name(struct pci_dev *pdev)
5791{
5792 switch (pdev->device) {
5793 case OC_DEVICE_ID1:
5794 return OC_NAME;
5795 case OC_DEVICE_ID2:
5796 return OC_NAME_BE;
5797 case OC_DEVICE_ID3:
5798 case OC_DEVICE_ID4:
5799 return OC_NAME_LANCER;
5800 case BE_DEVICE_ID2:
5801 return BE3_NAME;
5802 case OC_DEVICE_ID5:
5803 case OC_DEVICE_ID6:
5804 return OC_NAME_SH;
5805 default:
5806 return BE_NAME;
5807 }
5808}
5809
5810static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5811{
5812 struct be_adapter *adapter;
5813 struct net_device *netdev;
5814 int status = 0;
5815
5816 status = pci_enable_device(pdev);
5817 if (status)
5818 goto do_none;
5819
5820 status = pci_request_regions(pdev, DRV_NAME);
5821 if (status)
5822 goto disable_dev;
5823 pci_set_master(pdev);
5824
5825 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5826 if (!netdev) {
5827 status = -ENOMEM;
5828 goto rel_reg;
5829 }
5830 adapter = netdev_priv(netdev);
5831 adapter->pdev = pdev;
5832 pci_set_drvdata(pdev, adapter);
5833 adapter->netdev = netdev;
5834 SET_NETDEV_DEV(netdev, &pdev->dev);
5835
5836 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5837 if (status) {
5838 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5839 goto free_netdev;
5840 }
5841
5842 status = be_map_pci_bars(adapter);
5843 if (status)
5844 goto free_netdev;
5845
5846 status = be_drv_init(adapter);
5847 if (status)
5848 goto unmap_bars;
5849
5850 status = be_setup(adapter);
5851 if (status)
5852 goto drv_cleanup;
5853
5854 be_netdev_init(netdev);
5855 status = register_netdev(netdev);
5856 if (status != 0)
5857 goto unsetup;
5858
5859 be_roce_dev_add(adapter);
5860
5861 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5862 adapter->error_recovery.probe_time = jiffies;
5863
5864 /* On Die temperature not supported for VF. */
5865 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5866 adapter->hwmon_info.hwmon_dev =
5867 devm_hwmon_device_register_with_groups(&pdev->dev,
5868 DRV_NAME,
5869 adapter,
5870 be_hwmon_groups);
5871 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5872 }
5873
5874 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5875 func_name(adapter), mc_name(adapter), adapter->port_name);
5876
5877 return 0;
5878
5879unsetup:
5880 be_clear(adapter);
5881drv_cleanup:
5882 be_drv_cleanup(adapter);
5883unmap_bars:
5884 be_unmap_pci_bars(adapter);
5885free_netdev:
5886 free_netdev(netdev);
5887rel_reg:
5888 pci_release_regions(pdev);
5889disable_dev:
5890 pci_disable_device(pdev);
5891do_none:
5892 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5893 return status;
5894}
5895
5896static int __maybe_unused be_suspend(struct device *dev_d)
5897{
5898 struct be_adapter *adapter = dev_get_drvdata(dev_d);
5899
5900 be_intr_set(adapter, false);
5901 be_cancel_err_detection(adapter);
5902
5903 be_cleanup(adapter);
5904
5905 return 0;
5906}
5907
5908static int __maybe_unused be_pci_resume(struct device *dev_d)
5909{
5910 struct be_adapter *adapter = dev_get_drvdata(dev_d);
5911 int status = 0;
5912
5913 status = be_resume(adapter);
5914 if (status)
5915 return status;
5916
5917 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5918
5919 return 0;
5920}
5921
5922/*
5923 * An FLR will stop BE from DMAing any data.
5924 */
5925static void be_shutdown(struct pci_dev *pdev)
5926{
5927 struct be_adapter *adapter = pci_get_drvdata(pdev);
5928
5929 if (!adapter)
5930 return;
5931
5932 be_roce_dev_shutdown(adapter);
5933 cancel_delayed_work_sync(&adapter->work);
5934 be_cancel_err_detection(adapter);
5935
5936 netif_device_detach(adapter->netdev);
5937
5938 be_cmd_reset_function(adapter);
5939
5940 pci_disable_device(pdev);
5941}
5942
5943static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
5944 pci_channel_state_t state)
5945{
5946 struct be_adapter *adapter = pci_get_drvdata(pdev);
5947
5948 dev_err(&adapter->pdev->dev, "EEH error detected\n");
5949
5950 be_roce_dev_remove(adapter);
5951
5952 if (!be_check_error(adapter, BE_ERROR_EEH)) {
5953 be_set_error(adapter, BE_ERROR_EEH);
5954
5955 be_cancel_err_detection(adapter);
5956
5957 be_cleanup(adapter);
5958 }
5959
5960 if (state == pci_channel_io_perm_failure)
5961 return PCI_ERS_RESULT_DISCONNECT;
5962
5963 pci_disable_device(pdev);
5964
5965 /* The error could cause the FW to trigger a flash debug dump.
5966 * Resetting the card while flash dump is in progress
5967 * can cause it not to recover; wait for it to finish.
5968 * Wait only for first function as it is needed only once per
5969 * adapter.
5970 */
5971 if (pdev->devfn == 0)
5972 ssleep(30);
5973
5974 return PCI_ERS_RESULT_NEED_RESET;
5975}
5976
5977static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
5978{
5979 struct be_adapter *adapter = pci_get_drvdata(pdev);
5980 int status;
5981
5982 dev_info(&adapter->pdev->dev, "EEH reset\n");
5983
5984 status = pci_enable_device(pdev);
5985 if (status)
5986 return PCI_ERS_RESULT_DISCONNECT;
5987
5988 pci_set_master(pdev);
5989 pci_restore_state(pdev);
5990
5991 /* Check if card is ok and fw is ready */
5992 dev_info(&adapter->pdev->dev,
5993 "Waiting for FW to be ready after EEH reset\n");
5994 status = be_fw_wait_ready(adapter);
5995 if (status)
5996 return PCI_ERS_RESULT_DISCONNECT;
5997
5998 be_clear_error(adapter, BE_CLEAR_ALL);
5999 return PCI_ERS_RESULT_RECOVERED;
6000}
6001
6002static void be_eeh_resume(struct pci_dev *pdev)
6003{
6004 int status = 0;
6005 struct be_adapter *adapter = pci_get_drvdata(pdev);
6006
6007 dev_info(&adapter->pdev->dev, "EEH resume\n");
6008
6009 pci_save_state(pdev);
6010
6011 status = be_resume(adapter);
6012 if (status)
6013 goto err;
6014
6015 be_roce_dev_add(adapter);
6016
6017 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
6018 return;
6019err:
6020 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
6021}
6022
6023static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
6024{
6025 struct be_adapter *adapter = pci_get_drvdata(pdev);
6026 struct be_resources vft_res = {0};
6027 int status;
6028
6029 if (!num_vfs)
6030 be_vf_clear(adapter);
6031
6032 adapter->num_vfs = num_vfs;
6033
6034 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
6035 dev_warn(&pdev->dev,
6036 "Cannot disable VFs while they are assigned\n");
6037 return -EBUSY;
6038 }
6039
6040 /* When the HW is in SRIOV capable configuration, the PF-pool resources
6041 * are equally distributed across the max-number of VFs. The user may
6042 * request only a subset of the max-vfs to be enabled.
6043 * Based on num_vfs, redistribute the resources across num_vfs so that
6044 * each VF will have access to more number of resources.
6045 * This facility is not available in BE3 FW.
6046 * Also, this is done by FW in Lancer chip.
6047 */
6048 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
6049 be_calculate_vf_res(adapter, adapter->num_vfs,
6050 &vft_res);
6051 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
6052 adapter->num_vfs, &vft_res);
6053 if (status)
6054 dev_err(&pdev->dev,
6055 "Failed to optimize SR-IOV resources\n");
6056 }
6057
6058 status = be_get_resources(adapter);
6059 if (status)
6060 return be_cmd_status(status);
6061
6062 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
6063 rtnl_lock();
6064 status = be_update_queues(adapter);
6065 rtnl_unlock();
6066 if (status)
6067 return be_cmd_status(status);
6068
6069 if (adapter->num_vfs)
6070 status = be_vf_setup(adapter);
6071
6072 if (!status)
6073 return adapter->num_vfs;
6074
6075 return 0;
6076}
6077
6078static const struct pci_error_handlers be_eeh_handlers = {
6079 .error_detected = be_eeh_err_detected,
6080 .slot_reset = be_eeh_reset,
6081 .resume = be_eeh_resume,
6082};
6083
6084static SIMPLE_DEV_PM_OPS(be_pci_pm_ops, be_suspend, be_pci_resume);
6085
6086static struct pci_driver be_driver = {
6087 .name = DRV_NAME,
6088 .id_table = be_dev_ids,
6089 .probe = be_probe,
6090 .remove = be_remove,
6091 .driver.pm = &be_pci_pm_ops,
6092 .shutdown = be_shutdown,
6093 .sriov_configure = be_pci_sriov_configure,
6094 .err_handler = &be_eeh_handlers
6095};
6096
6097static int __init be_init_module(void)
6098{
6099 int status;
6100
6101 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
6102 rx_frag_size != 2048) {
6103 printk(KERN_WARNING DRV_NAME
6104 " : Module param rx_frag_size must be 2048/4096/8192."
6105 " Using 2048\n");
6106 rx_frag_size = 2048;
6107 }
6108
6109 if (num_vfs > 0) {
6110 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
6111 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
6112 }
6113
6114 be_wq = create_singlethread_workqueue("be_wq");
6115 if (!be_wq) {
6116 pr_warn(DRV_NAME "workqueue creation failed\n");
6117 return -1;
6118 }
6119
6120 be_err_recovery_workq =
6121 create_singlethread_workqueue("be_err_recover");
6122 if (!be_err_recovery_workq)
6123 pr_warn(DRV_NAME "Could not create error recovery workqueue\n");
6124
6125 status = pci_register_driver(&be_driver);
6126 if (status) {
6127 destroy_workqueue(be_wq);
6128 be_destroy_err_recovery_workq();
6129 }
6130 return status;
6131}
6132module_init(be_init_module);
6133
6134static void __exit be_exit_module(void)
6135{
6136 pci_unregister_driver(&be_driver);
6137
6138 be_destroy_err_recovery_workq();
6139
6140 if (be_wq)
6141 destroy_workqueue(be_wq);
6142}
6143module_exit(be_exit_module);
Linux 6.x block layer and io_uring tree(s)