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
23 MODULE_DESCRIPTION(DRV_DESC);
24 MODULE_AUTHOR("Emulex Corporation");
25 MODULE_LICENSE("GPL");
26
27 /* num_vfs module param is obsolete.
28 * Use sysfs method to enable/disable VFs.
29 */
30 static unsigned int num_vfs;
31 module_param(num_vfs, uint, 0444);
32 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
33
34 static ushort rx_frag_size = 2048;
35 module_param(rx_frag_size, ushort, 0444);
36 MODULE_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 */
41 static struct workqueue_struct *be_err_recovery_workq;
42
43 static 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 };
62 MODULE_DEVICE_TABLE(pci, be_dev_ids);
63
64 /* Workqueue used by all functions for defering cmd calls to the adapter */
65 static struct workqueue_struct *be_wq;
66
67 /* UE Status Low CSR */
68 static 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 */
104 static 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
be_queue_free(struct be_adapter * adapter,struct be_queue_info * q)144 static 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
be_queue_alloc(struct be_adapter * adapter,struct be_queue_info * q,u16 len,u16 entry_size)155 static 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
be_reg_intr_set(struct be_adapter * adapter,bool enable)171 static 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 ®);
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
be_intr_set(struct be_adapter * adapter,bool enable)190 static 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
be_rxq_notify(struct be_adapter * adapter,u16 qid,u16 posted)206 static 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
be_txq_notify(struct be_adapter * adapter,struct be_tx_obj * txo,u16 posted)220 static 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
be_eq_notify(struct be_adapter * adapter,u16 qid,bool arm,bool clear_int,u16 num_popped,u32 eq_delay_mult_enc)235 static 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
be_cq_notify(struct be_adapter * adapter,u16 qid,bool arm,u16 num_popped)257 void 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
be_dev_mac_add(struct be_adapter * adapter,const u8 * mac)274 static 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
be_dev_mac_del(struct be_adapter * adapter,int pmac_id)291 static 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
be_mac_addr_set(struct net_device * netdev,void * p)305 static 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);
370 done:
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;
374 err:
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 */
hw_stats_from_cmd(struct be_adapter * adapter)380 static 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 */
be_erx_stats_from_cmd(struct be_adapter * adapter)398 static 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
populate_be_v0_stats(struct be_adapter * adapter)415 static 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
populate_be_v1_stats(struct be_adapter * adapter)464 static 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
populate_be_v2_stats(struct be_adapter * adapter)510 static 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
populate_lancer_stats(struct be_adapter * adapter)564 static 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
accumulate_16bit_val(u32 * acc,u16 val)601 static 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
populate_erx_stats(struct be_adapter * adapter,struct be_rx_obj * rxo,u32 erx_stat)613 static 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
be_parse_stats(struct be_adapter * adapter)626 void 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
be_get_stats64(struct net_device * netdev,struct rtnl_link_stats64 * stats)652 static 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
be_link_status_update(struct be_adapter * adapter,u8 link_status)719 void 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
be_gso_hdr_len(struct sk_buff * skb)736 static 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
be_tx_stats_update(struct be_tx_obj * txo,struct sk_buff * skb)744 static 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 */
skb_wrb_cnt(struct sk_buff * skb)761 static 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
wrb_fill(struct be_eth_wrb * wrb,u64 addr,int len)767 static 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 */
wrb_fill_dummy(struct be_eth_wrb * wrb)778 static 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
be_get_tx_vlan_tag(struct be_adapter * adapter,struct sk_buff * skb)786 static 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 */
skb_inner_ip_proto(struct sk_buff * skb)803 static 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
skb_ip_proto(struct sk_buff * skb)809 static 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
be_is_txq_full(struct be_tx_obj * txo)815 static 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
be_can_txq_wake(struct be_tx_obj * txo)820 static 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
be_is_tx_compl_pending(struct be_tx_obj * txo)825 static 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
be_get_wrb_params_from_skb(struct be_adapter * adapter,struct sk_buff * skb,struct be_wrb_params * wrb_params)830 static 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
wrb_fill_hdr(struct be_adapter * adapter,struct be_eth_hdr_wrb * hdr,struct be_wrb_params * wrb_params,struct sk_buff * skb)862 static 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
unmap_tx_frag(struct device * dev,struct be_eth_wrb * wrb,bool unmap_single)899 static 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 */
be_tx_get_wrb_hdr(struct be_tx_obj * txo)917 static 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 */
be_tx_setup_wrb_hdr(struct be_adapter * adapter,struct be_tx_obj * txo,struct be_wrb_params * wrb_params,struct sk_buff * skb,u16 head)926 static 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 */
be_tx_setup_wrb_frag(struct be_tx_obj * txo,dma_addr_t busaddr,int len)947 static 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 */
be_xmit_restore(struct be_adapter * adapter,struct be_tx_obj * txo,u32 head,bool map_single,u32 copied)962 static 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 */
be_xmit_enqueue(struct be_adapter * adapter,struct be_tx_obj * txo,struct sk_buff * skb,struct be_wrb_params * wrb_params)990 static 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
1030 dma_err:
1031 adapter->drv_stats.dma_map_errors++;
1032 be_xmit_restore(adapter, txo, head, map_single, copied);
1033 return 0;
1034 }
1035
qnq_async_evt_rcvd(struct be_adapter * adapter)1036 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
1037 {
1038 return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
1039 }
1040
be_insert_vlan_in_pkt(struct be_adapter * adapter,struct sk_buff * skb,struct be_wrb_params * wrb_params)1041 static 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
be_ipv6_exthdr_check(struct sk_buff * skb)1090 static 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
be_vlan_tag_tx_chk(struct be_adapter * adapter,struct sk_buff * skb)1112 static 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
be_ipv6_tx_stall_chk(struct be_adapter * adapter,struct sk_buff * skb)1117 static 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
be_lancer_xmit_workarounds(struct be_adapter * adapter,struct sk_buff * skb,struct be_wrb_params * wrb_params)1122 static 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;
1186 tx_drop:
1187 dev_kfree_skb_any(skb);
1188 err:
1189 return NULL;
1190 }
1191
be_xmit_workarounds(struct be_adapter * adapter,struct sk_buff * skb,struct be_wrb_params * wrb_params)1192 static 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
be_xmit_flush(struct be_adapter * adapter,struct be_tx_obj * txo)1224 static 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
be_send_pkt_to_bmc(struct be_adapter * adapter,struct sk_buff ** skb)1298 static 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 }
1358 done:
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
be_xmit(struct sk_buff * skb,struct net_device * netdev)1368 static 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;
1408 drop_skb:
1409 dev_kfree_skb_any(skb);
1410 drop:
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
be_tx_timeout(struct net_device * netdev,unsigned int txqueue)1419 static 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 %u\n",
1469 ntohl(tcphdr->seq));
1470 dev_info(dev, "TCP ack_seq %u\n",
1471 ntohl(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
be_in_all_promisc(struct be_adapter * adapter)1496 static 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
be_set_vlan_promisc(struct be_adapter * adapter)1502 static 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
be_clear_vlan_promisc(struct be_adapter * adapter)1520 static 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 */
be_vid_config(struct be_adapter * adapter)1537 static 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
be_vlan_add_vid(struct net_device * netdev,__be16 proto,u16 vid)1572 static 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);
1590 done:
1591 mutex_unlock(&adapter->rx_filter_lock);
1592 return status;
1593 }
1594
be_vlan_rem_vid(struct net_device * netdev,__be16 proto,u16 vid)1595 static 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);
1613 done:
1614 mutex_unlock(&adapter->rx_filter_lock);
1615 return status;
1616 }
1617
be_set_all_promisc(struct be_adapter * adapter)1618 static 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
be_set_mc_promisc(struct be_adapter * adapter)1624 static 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
be_set_uc_promisc(struct be_adapter * adapter)1636 static 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
be_clear_uc_promisc(struct be_adapter * adapter)1648 static 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 */
be_uc_list_update(struct net_device * netdev,const unsigned char * addr)1665 static 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
be_mc_list_update(struct net_device * netdev,const unsigned char * addr)1674 static 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
be_set_mc_list(struct be_adapter * adapter)1683 static 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
be_clear_mc_list(struct be_adapter * adapter)1734 static 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
be_uc_mac_add(struct be_adapter * adapter,int uc_idx)1743 static 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
be_uc_mac_del(struct be_adapter * adapter,int pmac_id)1755 static 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
be_set_uc_list(struct be_adapter * adapter)1763 static 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
be_clear_uc_list(struct be_adapter * adapter)1811 static 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
__be_set_rx_mode(struct be_adapter * adapter)1823 static 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
be_work_set_rx_mode(struct work_struct * work)1846 static 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
be_set_vf_mac(struct net_device * netdev,int vf,u8 * mac)1855 static 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
be_get_vf_config(struct net_device * netdev,int vf,struct ifla_vf_info * vi)1895 static 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
be_set_vf_tvt(struct be_adapter * adapter,int vf,u16 vlan)1919 static 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
be_clear_vf_tvt(struct be_adapter * adapter,int vf)1948 static 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
be_set_vf_vlan(struct net_device * netdev,int vf,u16 vlan,u8 qos,__be16 vlan_proto)1975 static 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
be_set_vf_tx_rate(struct net_device * netdev,int vf,int min_tx_rate,int max_tx_rate)2009 static 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
2057 config_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
2065 err:
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
be_set_vf_link_state(struct net_device * netdev,int vf,int link_state)2071 static 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
be_set_vf_spoofchk(struct net_device * netdev,int vf,bool enable)2095 static 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
be_aic_update(struct be_aic_obj * aic,u64 rx_pkts,u64 tx_pkts,ulong now)2128 static 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
be_get_new_eqd(struct be_eq_obj * eqo)2136 static 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 */
be_get_eq_delay_mult_enc(struct be_eq_obj * eqo)2198 static 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
be_eqd_update(struct be_adapter * adapter,bool force_update)2228 void 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
be_rx_stats_update(struct be_rx_obj * rxo,struct be_rx_compl_info * rxcp)2250 static 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
csum_passed(struct be_rx_compl_info * rxcp)2268 static 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
get_rx_page_info(struct be_rx_obj * rxo)2277 static 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 */
be_rx_compl_discard(struct be_rx_obj * rxo,struct be_rx_compl_info * rxcp)2304 static 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 */
skb_fill_rx_data(struct be_rx_obj * rxo,struct sk_buff * skb,struct be_rx_compl_info * rxcp)2321 static 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 */
be_rx_compl_process(struct be_rx_obj * rxo,struct napi_struct * napi,struct be_rx_compl_info * rxcp)2393 static 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 */
be_rx_compl_process_gro(struct be_rx_obj * rxo,struct napi_struct * napi,struct be_rx_compl_info * rxcp)2429 static 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
be_parse_rx_compl_v1(struct be_eth_rx_compl * compl,struct be_rx_compl_info * rxcp)2487 static 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
be_parse_rx_compl_v0(struct be_eth_rx_compl * compl,struct be_rx_compl_info * rxcp)2510 static 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
be_rx_compl_get(struct be_rx_obj * rxo)2532 static 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
be_alloc_pages(u32 size,gfp_t gfp)2577 static 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 */
be_post_rx_frags(struct be_rx_obj * rxo,gfp_t gfp,u32 frags_needed)2590 static 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
be_update_tx_err(struct be_tx_obj * txo,u8 status)2669 static 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
lancer_update_tx_err(struct be_tx_obj * txo,u8 status)2684 static 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
be_tx_compl_get(struct be_adapter * adapter,struct be_tx_obj * txo)2709 static 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
be_tx_compl_process(struct be_adapter * adapter,struct be_tx_obj * txo,u16 last_index)2749 static 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 */
events_get(struct be_eq_obj * eqo)2785 static 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 */
be_eq_clean(struct be_eq_obj * eqo)2805 static 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 */
be_rxq_clean(struct be_rx_obj * rxo)2813 static 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
be_rx_cq_clean(struct be_rx_obj * rxo)2828 static 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
be_tx_compl_clean(struct be_adapter * adapter)2868 static 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
be_evt_queues_destroy(struct be_adapter * adapter)2935 static 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
be_evt_queues_create(struct be_adapter * adapter)2951 static 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
be_mcc_queues_destroy(struct be_adapter * adapter)2992 static 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 */
be_mcc_queues_create(struct be_adapter * adapter)3008 static 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
3030 mcc_q_free:
3031 be_queue_free(adapter, q);
3032 mcc_cq_destroy:
3033 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
3034 mcc_cq_free:
3035 be_queue_free(adapter, cq);
3036 err:
3037 return -1;
3038 }
3039
be_tx_queues_destroy(struct be_adapter * adapter)3040 static 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
be_tx_qs_create(struct be_adapter * adapter)3059 static 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
be_rx_cqs_destroy(struct be_adapter * adapter)3104 static 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
be_rx_cqs_create(struct be_adapter * adapter)3118 static 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
be_intx(int irq,void * dev)3160 static 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
be_msix(int irq,void * dev)3192 static 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
do_gro(struct be_rx_compl_info * rxcp)3201 static inline bool do_gro(struct be_rx_compl_info *rxcp)
3202 {
3203 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
3204 }
3205
be_process_rx(struct be_rx_obj * rxo,struct napi_struct * napi,int budget)3206 static 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
3244 loop_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
be_process_tx(struct be_adapter * adapter,struct be_tx_obj * txo,int idx)3266 static 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
be_poll(struct napi_struct * napi,int budget)3294 int 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
be_detect_error(struct be_adapter * adapter)3338 void 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
be_msix_disable(struct be_adapter * adapter)3418 static 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
be_msix_enable(struct be_adapter * adapter)3427 static 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
3467 fail:
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
be_msix_vec_get(struct be_adapter * adapter,struct be_eq_obj * eqo)3476 static 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
be_msix_register(struct be_adapter * adapter)3482 static 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;
3499 err_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
be_irq_register(struct be_adapter * adapter)3510 static 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 }
3533 done:
3534 adapter->isr_registered = true;
3535 return 0;
3536 }
3537
be_irq_unregister(struct be_adapter * adapter)3538 static 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
3560 done:
3561 adapter->isr_registered = false;
3562 }
3563
be_rx_qs_destroy(struct be_adapter * adapter)3564 static 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
be_disable_if_filters(struct be_adapter * adapter)3601 static 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
be_close(struct net_device * netdev)3633 static 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
be_rx_qs_create(struct be_adapter * adapter)3682 static 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
be_enable_if_filters(struct be_adapter * adapter)3753 static 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
be_open(struct net_device * netdev)3793 static 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;
3837 err:
3838 be_close(adapter->netdev);
3839 return -EIO;
3840 }
3841
be_vf_eth_addr_generate(struct be_adapter * adapter,u8 * mac)3842 static 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 */
be_vf_eth_addr_config(struct be_adapter * adapter)3861 static 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
be_vfs_mac_query(struct be_adapter * adapter)3891 static 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
be_vf_clear(struct be_adapter * adapter)3908 static 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);
3936 done:
3937 kfree(adapter->vf_cfg);
3938 adapter->num_vfs = 0;
3939 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3940 }
3941
be_clear_queues(struct be_adapter * adapter)3942 static 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
be_cancel_worker(struct be_adapter * adapter)3950 static 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
be_cancel_err_detection(struct be_adapter * adapter)3958 static 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 */
be_vxlan_set_port(struct net_device * netdev,unsigned int table,unsigned int entry,struct udp_tunnel_info * ti)3981 static 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
be_vxlan_unset_port(struct net_device * netdev,unsigned int table,unsigned int entry,struct udp_tunnel_info * ti)4012 static 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
4031 static 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_OPEN_ONLY,
4035 .tables = {
4036 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
4037 },
4038 };
4039
be_calculate_vf_res(struct be_adapter * adapter,u16 num_vfs,struct be_resources * vft_res)4040 static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,
4041 struct be_resources *vft_res)
4042 {
4043 struct be_resources res = adapter->pool_res;
4044 u32 vf_if_cap_flags = res.vf_if_cap_flags;
4045 struct be_resources res_mod = {0};
4046 u16 num_vf_qs = 1;
4047
4048 /* Distribute the queue resources among the PF and it's VFs */
4049 if (num_vfs) {
4050 /* Divide the rx queues evenly among the VFs and the PF, capped
4051 * at VF-EQ-count. Any remainder queues belong to the PF.
4052 */
4053 num_vf_qs = min(SH_VF_MAX_NIC_EQS,
4054 res.max_rss_qs / (num_vfs + 1));
4055
4056 /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES
4057 * RSS Tables per port. Provide RSS on VFs, only if number of
4058 * VFs requested is less than it's PF Pool's RSS Tables limit.
4059 */
4060 if (num_vfs >= be_max_pf_pool_rss_tables(adapter))
4061 num_vf_qs = 1;
4062 }
4063
4064 /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,
4065 * which are modifiable using SET_PROFILE_CONFIG cmd.
4066 */
4067 be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,
4068 RESOURCE_MODIFIABLE, 0);
4069
4070 /* If RSS IFACE capability flags are modifiable for a VF, set the
4071 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if
4072 * more than 1 RSSQ is available for a VF.
4073 * Otherwise, provision only 1 queue pair for VF.
4074 */
4075 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {
4076 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4077 if (num_vf_qs > 1) {
4078 vf_if_cap_flags |= BE_IF_FLAGS_RSS;
4079 if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)
4080 vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;
4081 } else {
4082 vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |
4083 BE_IF_FLAGS_DEFQ_RSS);
4084 }
4085 } else {
4086 num_vf_qs = 1;
4087 }
4088
4089 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
4090 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4091 vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4092 }
4093
4094 vft_res->vf_if_cap_flags = vf_if_cap_flags;
4095 vft_res->max_rx_qs = num_vf_qs;
4096 vft_res->max_rss_qs = num_vf_qs;
4097 vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);
4098 vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);
4099
4100 /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally
4101 * among the PF and it's VFs, if the fields are changeable
4102 */
4103 if (res_mod.max_uc_mac == FIELD_MODIFIABLE)
4104 vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);
4105
4106 if (res_mod.max_vlans == FIELD_MODIFIABLE)
4107 vft_res->max_vlans = res.max_vlans / (num_vfs + 1);
4108
4109 if (res_mod.max_iface_count == FIELD_MODIFIABLE)
4110 vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);
4111
4112 if (res_mod.max_mcc_count == FIELD_MODIFIABLE)
4113 vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);
4114 }
4115
be_if_destroy(struct be_adapter * adapter)4116 static void be_if_destroy(struct be_adapter *adapter)
4117 {
4118 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4119
4120 kfree(adapter->pmac_id);
4121 adapter->pmac_id = NULL;
4122
4123 kfree(adapter->mc_list);
4124 adapter->mc_list = NULL;
4125
4126 kfree(adapter->uc_list);
4127 adapter->uc_list = NULL;
4128 }
4129
be_clear(struct be_adapter * adapter)4130 static int be_clear(struct be_adapter *adapter)
4131 {
4132 struct pci_dev *pdev = adapter->pdev;
4133 struct be_resources vft_res = {0};
4134
4135 be_cancel_worker(adapter);
4136
4137 flush_workqueue(be_wq);
4138
4139 if (sriov_enabled(adapter))
4140 be_vf_clear(adapter);
4141
4142 /* Re-configure FW to distribute resources evenly across max-supported
4143 * number of VFs, only when VFs are not already enabled.
4144 */
4145 if (skyhawk_chip(adapter) && be_physfn(adapter) &&
4146 !pci_vfs_assigned(pdev)) {
4147 be_calculate_vf_res(adapter,
4148 pci_sriov_get_totalvfs(pdev),
4149 &vft_res);
4150 be_cmd_set_sriov_config(adapter, adapter->pool_res,
4151 pci_sriov_get_totalvfs(pdev),
4152 &vft_res);
4153 }
4154
4155 be_vxlan_unset_port(adapter->netdev, 0, 0, NULL);
4156
4157 be_if_destroy(adapter);
4158
4159 be_clear_queues(adapter);
4160
4161 be_msix_disable(adapter);
4162 adapter->flags &= ~BE_FLAGS_SETUP_DONE;
4163 return 0;
4164 }
4165
be_vfs_if_create(struct be_adapter * adapter)4166 static int be_vfs_if_create(struct be_adapter *adapter)
4167 {
4168 struct be_resources res = {0};
4169 u32 cap_flags, en_flags, vf;
4170 struct be_vf_cfg *vf_cfg;
4171 int status;
4172
4173 /* If a FW profile exists, then cap_flags are updated */
4174 cap_flags = BE_VF_IF_EN_FLAGS;
4175
4176 for_all_vfs(adapter, vf_cfg, vf) {
4177 if (!BE3_chip(adapter)) {
4178 status = be_cmd_get_profile_config(adapter, &res, NULL,
4179 ACTIVE_PROFILE_TYPE,
4180 RESOURCE_LIMITS,
4181 vf + 1);
4182 if (!status) {
4183 cap_flags = res.if_cap_flags;
4184 /* Prevent VFs from enabling VLAN promiscuous
4185 * mode
4186 */
4187 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4188 }
4189 }
4190
4191 /* PF should enable IF flags during proxy if_create call */
4192 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
4193 status = be_cmd_if_create(adapter, cap_flags, en_flags,
4194 &vf_cfg->if_handle, vf + 1);
4195 if (status)
4196 return status;
4197 }
4198
4199 return 0;
4200 }
4201
be_vf_setup_init(struct be_adapter * adapter)4202 static int be_vf_setup_init(struct be_adapter *adapter)
4203 {
4204 struct be_vf_cfg *vf_cfg;
4205 int vf;
4206
4207 adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
4208 GFP_KERNEL);
4209 if (!adapter->vf_cfg)
4210 return -ENOMEM;
4211
4212 for_all_vfs(adapter, vf_cfg, vf) {
4213 vf_cfg->if_handle = -1;
4214 vf_cfg->pmac_id = -1;
4215 }
4216 return 0;
4217 }
4218
be_vf_setup(struct be_adapter * adapter)4219 static int be_vf_setup(struct be_adapter *adapter)
4220 {
4221 struct device *dev = &adapter->pdev->dev;
4222 struct be_vf_cfg *vf_cfg;
4223 int status, old_vfs, vf;
4224 bool spoofchk;
4225
4226 old_vfs = pci_num_vf(adapter->pdev);
4227
4228 status = be_vf_setup_init(adapter);
4229 if (status)
4230 goto err;
4231
4232 if (old_vfs) {
4233 for_all_vfs(adapter, vf_cfg, vf) {
4234 status = be_cmd_get_if_id(adapter, vf_cfg, vf);
4235 if (status)
4236 goto err;
4237 }
4238
4239 status = be_vfs_mac_query(adapter);
4240 if (status)
4241 goto err;
4242 } else {
4243 status = be_vfs_if_create(adapter);
4244 if (status)
4245 goto err;
4246
4247 status = be_vf_eth_addr_config(adapter);
4248 if (status)
4249 goto err;
4250 }
4251
4252 for_all_vfs(adapter, vf_cfg, vf) {
4253 /* Allow VFs to programs MAC/VLAN filters */
4254 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
4255 vf + 1);
4256 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
4257 status = be_cmd_set_fn_privileges(adapter,
4258 vf_cfg->privileges |
4259 BE_PRIV_FILTMGMT,
4260 vf + 1);
4261 if (!status) {
4262 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
4263 dev_info(dev, "VF%d has FILTMGMT privilege\n",
4264 vf);
4265 }
4266 }
4267
4268 /* Allow full available bandwidth */
4269 if (!old_vfs)
4270 be_cmd_config_qos(adapter, 0, 0, vf + 1);
4271
4272 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
4273 vf_cfg->if_handle, NULL,
4274 &spoofchk);
4275 if (!status)
4276 vf_cfg->spoofchk = spoofchk;
4277
4278 if (!old_vfs) {
4279 be_cmd_enable_vf(adapter, vf + 1);
4280 be_cmd_set_logical_link_config(adapter,
4281 IFLA_VF_LINK_STATE_AUTO,
4282 vf+1);
4283 }
4284 }
4285
4286 if (!old_vfs) {
4287 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
4288 if (status) {
4289 dev_err(dev, "SRIOV enable failed\n");
4290 adapter->num_vfs = 0;
4291 goto err;
4292 }
4293 }
4294
4295 if (BE3_chip(adapter)) {
4296 /* On BE3, enable VEB only when SRIOV is enabled */
4297 status = be_cmd_set_hsw_config(adapter, 0, 0,
4298 adapter->if_handle,
4299 PORT_FWD_TYPE_VEB, 0);
4300 if (status)
4301 goto err;
4302 }
4303
4304 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4305 return 0;
4306 err:
4307 dev_err(dev, "VF setup failed\n");
4308 be_vf_clear(adapter);
4309 return status;
4310 }
4311
4312 /* Converting function_mode bits on BE3 to SH mc_type enums */
4313
be_convert_mc_type(u32 function_mode)4314 static u8 be_convert_mc_type(u32 function_mode)
4315 {
4316 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4317 return vNIC1;
4318 else if (function_mode & QNQ_MODE)
4319 return FLEX10;
4320 else if (function_mode & VNIC_MODE)
4321 return vNIC2;
4322 else if (function_mode & UMC_ENABLED)
4323 return UMC;
4324 else
4325 return MC_NONE;
4326 }
4327
4328 /* On BE2/BE3 FW does not suggest the supported limits */
BEx_get_resources(struct be_adapter * adapter,struct be_resources * res)4329 static void BEx_get_resources(struct be_adapter *adapter,
4330 struct be_resources *res)
4331 {
4332 bool use_sriov = adapter->num_vfs ? 1 : 0;
4333
4334 if (be_physfn(adapter))
4335 res->max_uc_mac = BE_UC_PMAC_COUNT;
4336 else
4337 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4338
4339 adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4340
4341 if (be_is_mc(adapter)) {
4342 /* Assuming that there are 4 channels per port,
4343 * when multi-channel is enabled
4344 */
4345 if (be_is_qnq_mode(adapter))
4346 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4347 else
4348 /* In a non-qnq multichannel mode, the pvid
4349 * takes up one vlan entry
4350 */
4351 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4352 } else {
4353 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4354 }
4355
4356 res->max_mcast_mac = BE_MAX_MC;
4357
4358 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4359 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4360 * *only* if it is RSS-capable.
4361 */
4362 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||
4363 be_virtfn(adapter) ||
4364 (be_is_mc(adapter) &&
4365 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4366 res->max_tx_qs = 1;
4367 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4368 struct be_resources super_nic_res = {0};
4369
4370 /* On a SuperNIC profile, the driver needs to use the
4371 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4372 */
4373 be_cmd_get_profile_config(adapter, &super_nic_res, NULL,
4374 ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,
4375 0);
4376 /* Some old versions of BE3 FW don't report max_tx_qs value */
4377 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4378 } else {
4379 res->max_tx_qs = BE3_MAX_TX_QS;
4380 }
4381
4382 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4383 !use_sriov && be_physfn(adapter))
4384 res->max_rss_qs = (adapter->be3_native) ?
4385 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4386 res->max_rx_qs = res->max_rss_qs + 1;
4387
4388 if (be_physfn(adapter))
4389 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4390 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4391 else
4392 res->max_evt_qs = 1;
4393
4394 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4395 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4396 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4397 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4398 }
4399
be_setup_init(struct be_adapter * adapter)4400 static void be_setup_init(struct be_adapter *adapter)
4401 {
4402 adapter->vlan_prio_bmap = 0xff;
4403 adapter->phy.link_speed = -1;
4404 adapter->if_handle = -1;
4405 adapter->be3_native = false;
4406 adapter->if_flags = 0;
4407 adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4408 if (be_physfn(adapter))
4409 adapter->cmd_privileges = MAX_PRIVILEGES;
4410 else
4411 adapter->cmd_privileges = MIN_PRIVILEGES;
4412 }
4413
4414 /* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.
4415 * However, this HW limitation is not exposed to the host via any SLI cmd.
4416 * As a result, in the case of SRIOV and in particular multi-partition configs
4417 * the driver needs to calcuate a proportional share of RSS Tables per PF-pool
4418 * for distribution between the VFs. This self-imposed limit will determine the
4419 * no: of VFs for which RSS can be enabled.
4420 */
be_calculate_pf_pool_rss_tables(struct be_adapter * adapter)4421 static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)
4422 {
4423 struct be_port_resources port_res = {0};
4424 u8 rss_tables_on_port;
4425 u16 max_vfs = be_max_vfs(adapter);
4426
4427 be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,
4428 RESOURCE_LIMITS, 0);
4429
4430 rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;
4431
4432 /* Each PF Pool's RSS Tables limit =
4433 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port
4434 */
4435 adapter->pool_res.max_rss_tables =
4436 max_vfs * rss_tables_on_port / port_res.max_vfs;
4437 }
4438
be_get_sriov_config(struct be_adapter * adapter)4439 static int be_get_sriov_config(struct be_adapter *adapter)
4440 {
4441 struct be_resources res = {0};
4442 int max_vfs, old_vfs;
4443
4444 be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,
4445 RESOURCE_LIMITS, 0);
4446
4447 /* Some old versions of BE3 FW don't report max_vfs value */
4448 if (BE3_chip(adapter) && !res.max_vfs) {
4449 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4450 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4451 }
4452
4453 adapter->pool_res = res;
4454
4455 /* If during previous unload of the driver, the VFs were not disabled,
4456 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4457 * Instead use the TotalVFs value stored in the pci-dev struct.
4458 */
4459 old_vfs = pci_num_vf(adapter->pdev);
4460 if (old_vfs) {
4461 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4462 old_vfs);
4463
4464 adapter->pool_res.max_vfs =
4465 pci_sriov_get_totalvfs(adapter->pdev);
4466 adapter->num_vfs = old_vfs;
4467 }
4468
4469 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4470 be_calculate_pf_pool_rss_tables(adapter);
4471 dev_info(&adapter->pdev->dev,
4472 "RSS can be enabled for all VFs if num_vfs <= %d\n",
4473 be_max_pf_pool_rss_tables(adapter));
4474 }
4475 return 0;
4476 }
4477
be_alloc_sriov_res(struct be_adapter * adapter)4478 static void be_alloc_sriov_res(struct be_adapter *adapter)
4479 {
4480 int old_vfs = pci_num_vf(adapter->pdev);
4481 struct be_resources vft_res = {0};
4482 int status;
4483
4484 be_get_sriov_config(adapter);
4485
4486 if (!old_vfs)
4487 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4488
4489 /* When the HW is in SRIOV capable configuration, the PF-pool
4490 * resources are given to PF during driver load, if there are no
4491 * old VFs. This facility is not available in BE3 FW.
4492 * Also, this is done by FW in Lancer chip.
4493 */
4494 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4495 be_calculate_vf_res(adapter, 0, &vft_res);
4496 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4497 &vft_res);
4498 if (status)
4499 dev_err(&adapter->pdev->dev,
4500 "Failed to optimize SRIOV resources\n");
4501 }
4502 }
4503
be_get_resources(struct be_adapter * adapter)4504 static int be_get_resources(struct be_adapter *adapter)
4505 {
4506 struct device *dev = &adapter->pdev->dev;
4507 struct be_resources res = {0};
4508 int status;
4509
4510 /* For Lancer, SH etc read per-function resource limits from FW.
4511 * GET_FUNC_CONFIG returns per function guaranteed limits.
4512 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4513 */
4514 if (BEx_chip(adapter)) {
4515 BEx_get_resources(adapter, &res);
4516 } else {
4517 status = be_cmd_get_func_config(adapter, &res);
4518 if (status)
4519 return status;
4520
4521 /* If a deafault RXQ must be created, we'll use up one RSSQ*/
4522 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4523 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4524 res.max_rss_qs -= 1;
4525 }
4526
4527 /* If RoCE is supported stash away half the EQs for RoCE */
4528 res.max_nic_evt_qs = be_roce_supported(adapter) ?
4529 res.max_evt_qs / 2 : res.max_evt_qs;
4530 adapter->res = res;
4531
4532 /* If FW supports RSS default queue, then skip creating non-RSS
4533 * queue for non-IP traffic.
4534 */
4535 adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4536 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4537
4538 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4539 be_max_txqs(adapter), be_max_rxqs(adapter),
4540 be_max_rss(adapter), be_max_nic_eqs(adapter),
4541 be_max_vfs(adapter));
4542 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4543 be_max_uc(adapter), be_max_mc(adapter),
4544 be_max_vlans(adapter));
4545
4546 /* Ensure RX and TX queues are created in pairs at init time */
4547 adapter->cfg_num_rx_irqs =
4548 min_t(u16, netif_get_num_default_rss_queues(),
4549 be_max_qp_irqs(adapter));
4550 adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;
4551 return 0;
4552 }
4553
be_get_config(struct be_adapter * adapter)4554 static int be_get_config(struct be_adapter *adapter)
4555 {
4556 int status, level;
4557 u16 profile_id;
4558
4559 status = be_cmd_get_cntl_attributes(adapter);
4560 if (status)
4561 return status;
4562
4563 status = be_cmd_query_fw_cfg(adapter);
4564 if (status)
4565 return status;
4566
4567 if (!lancer_chip(adapter) && be_physfn(adapter))
4568 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4569
4570 if (BEx_chip(adapter)) {
4571 level = be_cmd_get_fw_log_level(adapter);
4572 adapter->msg_enable =
4573 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4574 }
4575
4576 be_cmd_get_acpi_wol_cap(adapter);
4577 pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);
4578 pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);
4579
4580 be_cmd_query_port_name(adapter);
4581
4582 if (be_physfn(adapter)) {
4583 status = be_cmd_get_active_profile(adapter, &profile_id);
4584 if (!status)
4585 dev_info(&adapter->pdev->dev,
4586 "Using profile 0x%x\n", profile_id);
4587 }
4588
4589 return 0;
4590 }
4591
be_mac_setup(struct be_adapter * adapter)4592 static int be_mac_setup(struct be_adapter *adapter)
4593 {
4594 u8 mac[ETH_ALEN];
4595 int status;
4596
4597 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4598 status = be_cmd_get_perm_mac(adapter, mac);
4599 if (status)
4600 return status;
4601
4602 eth_hw_addr_set(adapter->netdev, mac);
4603 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4604
4605 /* Initial MAC for BE3 VFs is already programmed by PF */
4606 if (BEx_chip(adapter) && be_virtfn(adapter))
4607 memcpy(adapter->dev_mac, mac, ETH_ALEN);
4608 }
4609
4610 return 0;
4611 }
4612
be_schedule_worker(struct be_adapter * adapter)4613 static void be_schedule_worker(struct be_adapter *adapter)
4614 {
4615 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
4616 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4617 }
4618
be_destroy_err_recovery_workq(void)4619 static void be_destroy_err_recovery_workq(void)
4620 {
4621 if (!be_err_recovery_workq)
4622 return;
4623
4624 destroy_workqueue(be_err_recovery_workq);
4625 be_err_recovery_workq = NULL;
4626 }
4627
be_schedule_err_detection(struct be_adapter * adapter,u32 delay)4628 static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4629 {
4630 struct be_error_recovery *err_rec = &adapter->error_recovery;
4631
4632 if (!be_err_recovery_workq)
4633 return;
4634
4635 queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work,
4636 msecs_to_jiffies(delay));
4637 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4638 }
4639
be_setup_queues(struct be_adapter * adapter)4640 static int be_setup_queues(struct be_adapter *adapter)
4641 {
4642 struct net_device *netdev = adapter->netdev;
4643 int status;
4644
4645 status = be_evt_queues_create(adapter);
4646 if (status)
4647 goto err;
4648
4649 status = be_tx_qs_create(adapter);
4650 if (status)
4651 goto err;
4652
4653 status = be_rx_cqs_create(adapter);
4654 if (status)
4655 goto err;
4656
4657 status = be_mcc_queues_create(adapter);
4658 if (status)
4659 goto err;
4660
4661 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4662 if (status)
4663 goto err;
4664
4665 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4666 if (status)
4667 goto err;
4668
4669 return 0;
4670 err:
4671 dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4672 return status;
4673 }
4674
be_if_create(struct be_adapter * adapter)4675 static int be_if_create(struct be_adapter *adapter)
4676 {
4677 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4678 u32 cap_flags = be_if_cap_flags(adapter);
4679
4680 /* alloc required memory for other filtering fields */
4681 adapter->pmac_id = kcalloc(be_max_uc(adapter),
4682 sizeof(*adapter->pmac_id), GFP_KERNEL);
4683 if (!adapter->pmac_id)
4684 return -ENOMEM;
4685
4686 adapter->mc_list = kcalloc(be_max_mc(adapter),
4687 sizeof(*adapter->mc_list), GFP_KERNEL);
4688 if (!adapter->mc_list)
4689 return -ENOMEM;
4690
4691 adapter->uc_list = kcalloc(be_max_uc(adapter),
4692 sizeof(*adapter->uc_list), GFP_KERNEL);
4693 if (!adapter->uc_list)
4694 return -ENOMEM;
4695
4696 if (adapter->cfg_num_rx_irqs == 1)
4697 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4698
4699 en_flags &= cap_flags;
4700 /* will enable all the needed filter flags in be_open() */
4701 return be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4702 &adapter->if_handle, 0);
4703 }
4704
be_update_queues(struct be_adapter * adapter)4705 int be_update_queues(struct be_adapter *adapter)
4706 {
4707 struct net_device *netdev = adapter->netdev;
4708 int status;
4709
4710 if (netif_running(netdev)) {
4711 /* be_tx_timeout() must not run concurrently with this
4712 * function, synchronize with an already-running dev_watchdog
4713 */
4714 netif_tx_lock_bh(netdev);
4715 /* device cannot transmit now, avoid dev_watchdog timeouts */
4716 netif_carrier_off(netdev);
4717 netif_tx_unlock_bh(netdev);
4718
4719 be_close(netdev);
4720 }
4721
4722 be_cancel_worker(adapter);
4723
4724 /* If any vectors have been shared with RoCE we cannot re-program
4725 * the MSIx table.
4726 */
4727 if (!adapter->num_msix_roce_vec)
4728 be_msix_disable(adapter);
4729
4730 be_clear_queues(adapter);
4731 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4732 if (status)
4733 return status;
4734
4735 if (!msix_enabled(adapter)) {
4736 status = be_msix_enable(adapter);
4737 if (status)
4738 return status;
4739 }
4740
4741 status = be_if_create(adapter);
4742 if (status)
4743 return status;
4744
4745 status = be_setup_queues(adapter);
4746 if (status)
4747 return status;
4748
4749 be_schedule_worker(adapter);
4750
4751 /* The IF was destroyed and re-created. We need to clear
4752 * all promiscuous flags valid for the destroyed IF.
4753 * Without this promisc mode is not restored during
4754 * be_open() because the driver thinks that it is
4755 * already enabled in HW.
4756 */
4757 adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS;
4758
4759 if (netif_running(netdev))
4760 status = be_open(netdev);
4761
4762 return status;
4763 }
4764
fw_major_num(const char * fw_ver)4765 static inline int fw_major_num(const char *fw_ver)
4766 {
4767 int fw_major = 0, i;
4768
4769 i = sscanf(fw_ver, "%d.", &fw_major);
4770 if (i != 1)
4771 return 0;
4772
4773 return fw_major;
4774 }
4775
4776 /* If it is error recovery, FLR the PF
4777 * Else if any VFs are already enabled don't FLR the PF
4778 */
be_reset_required(struct be_adapter * adapter)4779 static bool be_reset_required(struct be_adapter *adapter)
4780 {
4781 if (be_error_recovering(adapter))
4782 return true;
4783 else
4784 return pci_num_vf(adapter->pdev) == 0;
4785 }
4786
4787 /* Wait for the FW to be ready and perform the required initialization */
be_func_init(struct be_adapter * adapter)4788 static int be_func_init(struct be_adapter *adapter)
4789 {
4790 int status;
4791
4792 status = be_fw_wait_ready(adapter);
4793 if (status)
4794 return status;
4795
4796 /* FW is now ready; clear errors to allow cmds/doorbell */
4797 be_clear_error(adapter, BE_CLEAR_ALL);
4798
4799 if (be_reset_required(adapter)) {
4800 status = be_cmd_reset_function(adapter);
4801 if (status)
4802 return status;
4803
4804 /* Wait for interrupts to quiesce after an FLR */
4805 msleep(100);
4806 }
4807
4808 /* Tell FW we're ready to fire cmds */
4809 status = be_cmd_fw_init(adapter);
4810 if (status)
4811 return status;
4812
4813 /* Allow interrupts for other ULPs running on NIC function */
4814 be_intr_set(adapter, true);
4815
4816 return 0;
4817 }
4818
be_setup(struct be_adapter * adapter)4819 static int be_setup(struct be_adapter *adapter)
4820 {
4821 struct device *dev = &adapter->pdev->dev;
4822 int status;
4823
4824 status = be_func_init(adapter);
4825 if (status)
4826 return status;
4827
4828 be_setup_init(adapter);
4829
4830 if (!lancer_chip(adapter))
4831 be_cmd_req_native_mode(adapter);
4832
4833 /* invoke this cmd first to get pf_num and vf_num which are needed
4834 * for issuing profile related cmds
4835 */
4836 if (!BEx_chip(adapter)) {
4837 status = be_cmd_get_func_config(adapter, NULL);
4838 if (status)
4839 return status;
4840 }
4841
4842 status = be_get_config(adapter);
4843 if (status)
4844 goto err;
4845
4846 if (!BE2_chip(adapter) && be_physfn(adapter))
4847 be_alloc_sriov_res(adapter);
4848
4849 status = be_get_resources(adapter);
4850 if (status)
4851 goto err;
4852
4853 status = be_msix_enable(adapter);
4854 if (status)
4855 goto err;
4856
4857 /* will enable all the needed filter flags in be_open() */
4858 status = be_if_create(adapter);
4859 if (status)
4860 goto err;
4861
4862 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4863 rtnl_lock();
4864 status = be_setup_queues(adapter);
4865 rtnl_unlock();
4866 if (status)
4867 goto err;
4868
4869 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4870
4871 status = be_mac_setup(adapter);
4872 if (status)
4873 goto err;
4874
4875 be_cmd_get_fw_ver(adapter);
4876 dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4877
4878 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4879 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4880 adapter->fw_ver);
4881 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4882 }
4883
4884 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4885 adapter->rx_fc);
4886 if (status)
4887 be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4888 &adapter->rx_fc);
4889
4890 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4891 adapter->tx_fc, adapter->rx_fc);
4892
4893 if (be_physfn(adapter))
4894 be_cmd_set_logical_link_config(adapter,
4895 IFLA_VF_LINK_STATE_AUTO, 0);
4896
4897 /* BE3 EVB echoes broadcast/multicast packets back to PF's vport
4898 * confusing a linux bridge or OVS that it might be connected to.
4899 * Set the EVB to PASSTHRU mode which effectively disables the EVB
4900 * when SRIOV is not enabled.
4901 */
4902 if (BE3_chip(adapter))
4903 be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,
4904 PORT_FWD_TYPE_PASSTHRU, 0);
4905
4906 if (adapter->num_vfs)
4907 be_vf_setup(adapter);
4908
4909 status = be_cmd_get_phy_info(adapter);
4910 if (!status && be_pause_supported(adapter))
4911 adapter->phy.fc_autoneg = 1;
4912
4913 if (be_physfn(adapter) && !lancer_chip(adapter))
4914 be_cmd_set_features(adapter);
4915
4916 be_schedule_worker(adapter);
4917 adapter->flags |= BE_FLAGS_SETUP_DONE;
4918 return 0;
4919 err:
4920 be_clear(adapter);
4921 return status;
4922 }
4923
4924 #ifdef CONFIG_NET_POLL_CONTROLLER
be_netpoll(struct net_device * netdev)4925 static void be_netpoll(struct net_device *netdev)
4926 {
4927 struct be_adapter *adapter = netdev_priv(netdev);
4928 struct be_eq_obj *eqo;
4929 int i;
4930
4931 for_all_evt_queues(adapter, eqo, i) {
4932 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4933 napi_schedule(&eqo->napi);
4934 }
4935 }
4936 #endif
4937
be_load_fw(struct be_adapter * adapter,u8 * fw_file)4938 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4939 {
4940 const struct firmware *fw;
4941 int status;
4942
4943 if (!netif_running(adapter->netdev)) {
4944 dev_err(&adapter->pdev->dev,
4945 "Firmware load not allowed (interface is down)\n");
4946 return -ENETDOWN;
4947 }
4948
4949 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4950 if (status)
4951 goto fw_exit;
4952
4953 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4954
4955 if (lancer_chip(adapter))
4956 status = lancer_fw_download(adapter, fw);
4957 else
4958 status = be_fw_download(adapter, fw);
4959
4960 if (!status)
4961 be_cmd_get_fw_ver(adapter);
4962
4963 fw_exit:
4964 release_firmware(fw);
4965 return status;
4966 }
4967
be_ndo_bridge_setlink(struct net_device * dev,struct nlmsghdr * nlh,u16 flags,struct netlink_ext_ack * extack)4968 static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4969 u16 flags, struct netlink_ext_ack *extack)
4970 {
4971 struct be_adapter *adapter = netdev_priv(dev);
4972 struct nlattr *attr, *br_spec;
4973 int rem;
4974 int status = 0;
4975 u16 mode = 0;
4976
4977 if (!sriov_enabled(adapter))
4978 return -EOPNOTSUPP;
4979
4980 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4981 if (!br_spec)
4982 return -EINVAL;
4983
4984 nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) {
4985 mode = nla_get_u16(attr);
4986 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4987 return -EOPNOTSUPP;
4988
4989 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4990 return -EINVAL;
4991
4992 status = be_cmd_set_hsw_config(adapter, 0, 0,
4993 adapter->if_handle,
4994 mode == BRIDGE_MODE_VEPA ?
4995 PORT_FWD_TYPE_VEPA :
4996 PORT_FWD_TYPE_VEB, 0);
4997 if (status)
4998 goto err;
4999
5000 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
5001 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5002
5003 return status;
5004 }
5005 err:
5006 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
5007 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5008
5009 return status;
5010 }
5011
be_ndo_bridge_getlink(struct sk_buff * skb,u32 pid,u32 seq,struct net_device * dev,u32 filter_mask,int nlflags)5012 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
5013 struct net_device *dev, u32 filter_mask,
5014 int nlflags)
5015 {
5016 struct be_adapter *adapter = netdev_priv(dev);
5017 int status = 0;
5018 u8 hsw_mode;
5019
5020 /* BE and Lancer chips support VEB mode only */
5021 if (BEx_chip(adapter) || lancer_chip(adapter)) {
5022 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
5023 if (!pci_sriov_get_totalvfs(adapter->pdev))
5024 return 0;
5025 hsw_mode = PORT_FWD_TYPE_VEB;
5026 } else {
5027 status = be_cmd_get_hsw_config(adapter, NULL, 0,
5028 adapter->if_handle, &hsw_mode,
5029 NULL);
5030 if (status)
5031 return 0;
5032
5033 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
5034 return 0;
5035 }
5036
5037 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
5038 hsw_mode == PORT_FWD_TYPE_VEPA ?
5039 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
5040 0, 0, nlflags, filter_mask, NULL);
5041 }
5042
be_alloc_work(struct be_adapter * adapter,void (* func)(struct work_struct *))5043 static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter,
5044 void (*func)(struct work_struct *))
5045 {
5046 struct be_cmd_work *work;
5047
5048 work = kzalloc(sizeof(*work), GFP_ATOMIC);
5049 if (!work) {
5050 dev_err(&adapter->pdev->dev,
5051 "be_work memory allocation failed\n");
5052 return NULL;
5053 }
5054
5055 INIT_WORK(&work->work, func);
5056 work->adapter = adapter;
5057 return work;
5058 }
5059
be_features_check(struct sk_buff * skb,struct net_device * dev,netdev_features_t features)5060 static netdev_features_t be_features_check(struct sk_buff *skb,
5061 struct net_device *dev,
5062 netdev_features_t features)
5063 {
5064 struct be_adapter *adapter = netdev_priv(dev);
5065 u8 l4_hdr = 0;
5066
5067 if (skb_is_gso(skb)) {
5068 /* IPv6 TSO requests with extension hdrs are a problem
5069 * to Lancer and BE3 HW. Disable TSO6 feature.
5070 */
5071 if (!skyhawk_chip(adapter) && is_ipv6_ext_hdr(skb))
5072 features &= ~NETIF_F_TSO6;
5073
5074 /* Lancer cannot handle the packet with MSS less than 256.
5075 * Also it can't handle a TSO packet with a single segment
5076 * Disable the GSO support in such cases
5077 */
5078 if (lancer_chip(adapter) &&
5079 (skb_shinfo(skb)->gso_size < 256 ||
5080 skb_shinfo(skb)->gso_segs == 1))
5081 features &= ~NETIF_F_GSO_MASK;
5082 }
5083
5084 /* The code below restricts offload features for some tunneled and
5085 * Q-in-Q packets.
5086 * Offload features for normal (non tunnel) packets are unchanged.
5087 */
5088 features = vlan_features_check(skb, features);
5089 if (!skb->encapsulation ||
5090 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
5091 return features;
5092
5093 /* It's an encapsulated packet and VxLAN offloads are enabled. We
5094 * should disable tunnel offload features if it's not a VxLAN packet,
5095 * as tunnel offloads have been enabled only for VxLAN. This is done to
5096 * allow other tunneled traffic like GRE work fine while VxLAN
5097 * offloads are configured in Skyhawk-R.
5098 */
5099 switch (vlan_get_protocol(skb)) {
5100 case htons(ETH_P_IP):
5101 l4_hdr = ip_hdr(skb)->protocol;
5102 break;
5103 case htons(ETH_P_IPV6):
5104 l4_hdr = ipv6_hdr(skb)->nexthdr;
5105 break;
5106 default:
5107 return features;
5108 }
5109
5110 if (l4_hdr != IPPROTO_UDP ||
5111 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
5112 skb->inner_protocol != htons(ETH_P_TEB) ||
5113 skb_inner_mac_header(skb) - skb_transport_header(skb) !=
5114 sizeof(struct udphdr) + sizeof(struct vxlanhdr) ||
5115 !adapter->vxlan_port ||
5116 udp_hdr(skb)->dest != adapter->vxlan_port)
5117 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
5118
5119 return features;
5120 }
5121
be_get_phys_port_id(struct net_device * dev,struct netdev_phys_item_id * ppid)5122 static int be_get_phys_port_id(struct net_device *dev,
5123 struct netdev_phys_item_id *ppid)
5124 {
5125 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
5126 struct be_adapter *adapter = netdev_priv(dev);
5127 u8 *id;
5128
5129 if (MAX_PHYS_ITEM_ID_LEN < id_len)
5130 return -ENOSPC;
5131
5132 ppid->id[0] = adapter->hba_port_num + 1;
5133 id = &ppid->id[1];
5134 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
5135 i--, id += CNTL_SERIAL_NUM_WORD_SZ)
5136 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
5137
5138 ppid->id_len = id_len;
5139
5140 return 0;
5141 }
5142
be_set_rx_mode(struct net_device * dev)5143 static void be_set_rx_mode(struct net_device *dev)
5144 {
5145 struct be_adapter *adapter = netdev_priv(dev);
5146 struct be_cmd_work *work;
5147
5148 work = be_alloc_work(adapter, be_work_set_rx_mode);
5149 if (work)
5150 queue_work(be_wq, &work->work);
5151 }
5152
5153 static const struct net_device_ops be_netdev_ops = {
5154 .ndo_open = be_open,
5155 .ndo_stop = be_close,
5156 .ndo_start_xmit = be_xmit,
5157 .ndo_set_rx_mode = be_set_rx_mode,
5158 .ndo_set_mac_address = be_mac_addr_set,
5159 .ndo_get_stats64 = be_get_stats64,
5160 .ndo_validate_addr = eth_validate_addr,
5161 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
5162 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
5163 .ndo_set_vf_mac = be_set_vf_mac,
5164 .ndo_set_vf_vlan = be_set_vf_vlan,
5165 .ndo_set_vf_rate = be_set_vf_tx_rate,
5166 .ndo_get_vf_config = be_get_vf_config,
5167 .ndo_set_vf_link_state = be_set_vf_link_state,
5168 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,
5169 .ndo_tx_timeout = be_tx_timeout,
5170 #ifdef CONFIG_NET_POLL_CONTROLLER
5171 .ndo_poll_controller = be_netpoll,
5172 #endif
5173 .ndo_bridge_setlink = be_ndo_bridge_setlink,
5174 .ndo_bridge_getlink = be_ndo_bridge_getlink,
5175 .ndo_features_check = be_features_check,
5176 .ndo_get_phys_port_id = be_get_phys_port_id,
5177 };
5178
be_netdev_init(struct net_device * netdev)5179 static void be_netdev_init(struct net_device *netdev)
5180 {
5181 struct be_adapter *adapter = netdev_priv(netdev);
5182
5183 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5184 NETIF_F_GSO_UDP_TUNNEL |
5185 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
5186 NETIF_F_HW_VLAN_CTAG_TX;
5187 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
5188 netdev->hw_features |= NETIF_F_RXHASH;
5189
5190 netdev->features |= netdev->hw_features |
5191 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER |
5192 NETIF_F_HIGHDMA;
5193
5194 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5195 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
5196
5197 netdev->priv_flags |= IFF_UNICAST_FLT;
5198
5199 netdev->flags |= IFF_MULTICAST;
5200
5201 netif_set_tso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
5202
5203 netdev->netdev_ops = &be_netdev_ops;
5204
5205 netdev->ethtool_ops = &be_ethtool_ops;
5206
5207 if (!lancer_chip(adapter) && !BEx_chip(adapter) && !be_is_mc(adapter))
5208 netdev->udp_tunnel_nic_info = &be_udp_tunnels;
5209
5210 /* MTU range: 256 - 9000 */
5211 netdev->min_mtu = BE_MIN_MTU;
5212 netdev->max_mtu = BE_MAX_MTU;
5213 }
5214
be_cleanup(struct be_adapter * adapter)5215 static void be_cleanup(struct be_adapter *adapter)
5216 {
5217 struct net_device *netdev = adapter->netdev;
5218
5219 rtnl_lock();
5220 netif_device_detach(netdev);
5221 if (netif_running(netdev))
5222 be_close(netdev);
5223 rtnl_unlock();
5224
5225 be_clear(adapter);
5226 }
5227
be_resume(struct be_adapter * adapter)5228 static int be_resume(struct be_adapter *adapter)
5229 {
5230 struct net_device *netdev = adapter->netdev;
5231 int status;
5232
5233 status = be_setup(adapter);
5234 if (status)
5235 return status;
5236
5237 rtnl_lock();
5238 if (netif_running(netdev))
5239 status = be_open(netdev);
5240 rtnl_unlock();
5241
5242 if (status)
5243 return status;
5244
5245 netif_device_attach(netdev);
5246
5247 return 0;
5248 }
5249
be_soft_reset(struct be_adapter * adapter)5250 static void be_soft_reset(struct be_adapter *adapter)
5251 {
5252 u32 val;
5253
5254 dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n");
5255 val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5256 val |= SLIPORT_SOFTRESET_SR_MASK;
5257 iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5258 }
5259
be_err_is_recoverable(struct be_adapter * adapter)5260 static bool be_err_is_recoverable(struct be_adapter *adapter)
5261 {
5262 struct be_error_recovery *err_rec = &adapter->error_recovery;
5263 unsigned long initial_idle_time =
5264 msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME);
5265 unsigned long recovery_interval =
5266 msecs_to_jiffies(ERR_RECOVERY_INTERVAL);
5267 u16 ue_err_code;
5268 u32 val;
5269
5270 val = be_POST_stage_get(adapter);
5271 if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR)
5272 return false;
5273 ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK;
5274 if (ue_err_code == 0)
5275 return false;
5276
5277 dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n",
5278 ue_err_code);
5279
5280 if (time_before_eq(jiffies - err_rec->probe_time, initial_idle_time)) {
5281 dev_err(&adapter->pdev->dev,
5282 "Cannot recover within %lu sec from driver load\n",
5283 jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC);
5284 return false;
5285 }
5286
5287 if (err_rec->last_recovery_time && time_before_eq(
5288 jiffies - err_rec->last_recovery_time, recovery_interval)) {
5289 dev_err(&adapter->pdev->dev,
5290 "Cannot recover within %lu sec from last recovery\n",
5291 jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC);
5292 return false;
5293 }
5294
5295 if (ue_err_code == err_rec->last_err_code) {
5296 dev_err(&adapter->pdev->dev,
5297 "Cannot recover from a consecutive TPE error\n");
5298 return false;
5299 }
5300
5301 err_rec->last_recovery_time = jiffies;
5302 err_rec->last_err_code = ue_err_code;
5303 return true;
5304 }
5305
be_tpe_recover(struct be_adapter * adapter)5306 static int be_tpe_recover(struct be_adapter *adapter)
5307 {
5308 struct be_error_recovery *err_rec = &adapter->error_recovery;
5309 int status = -EAGAIN;
5310 u32 val;
5311
5312 switch (err_rec->recovery_state) {
5313 case ERR_RECOVERY_ST_NONE:
5314 err_rec->recovery_state = ERR_RECOVERY_ST_DETECT;
5315 err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION;
5316 break;
5317
5318 case ERR_RECOVERY_ST_DETECT:
5319 val = be_POST_stage_get(adapter);
5320 if ((val & POST_STAGE_RECOVERABLE_ERR) !=
5321 POST_STAGE_RECOVERABLE_ERR) {
5322 dev_err(&adapter->pdev->dev,
5323 "Unrecoverable HW error detected: 0x%x\n", val);
5324 status = -EINVAL;
5325 err_rec->resched_delay = 0;
5326 break;
5327 }
5328
5329 dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n");
5330
5331 /* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR
5332 * milliseconds before it checks for final error status in
5333 * SLIPORT_SEMAPHORE to determine if recovery criteria is met.
5334 * If it does, then PF0 initiates a Soft Reset.
5335 */
5336 if (adapter->pf_num == 0) {
5337 err_rec->recovery_state = ERR_RECOVERY_ST_RESET;
5338 err_rec->resched_delay = err_rec->ue_to_reset_time -
5339 ERR_RECOVERY_UE_DETECT_DURATION;
5340 break;
5341 }
5342
5343 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5344 err_rec->resched_delay = err_rec->ue_to_poll_time -
5345 ERR_RECOVERY_UE_DETECT_DURATION;
5346 break;
5347
5348 case ERR_RECOVERY_ST_RESET:
5349 if (!be_err_is_recoverable(adapter)) {
5350 dev_err(&adapter->pdev->dev,
5351 "Failed to meet recovery criteria\n");
5352 status = -EIO;
5353 err_rec->resched_delay = 0;
5354 break;
5355 }
5356 be_soft_reset(adapter);
5357 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5358 err_rec->resched_delay = err_rec->ue_to_poll_time -
5359 err_rec->ue_to_reset_time;
5360 break;
5361
5362 case ERR_RECOVERY_ST_PRE_POLL:
5363 err_rec->recovery_state = ERR_RECOVERY_ST_REINIT;
5364 err_rec->resched_delay = 0;
5365 status = 0; /* done */
5366 break;
5367
5368 default:
5369 status = -EINVAL;
5370 err_rec->resched_delay = 0;
5371 break;
5372 }
5373
5374 return status;
5375 }
5376
be_err_recover(struct be_adapter * adapter)5377 static int be_err_recover(struct be_adapter *adapter)
5378 {
5379 int status;
5380
5381 if (!lancer_chip(adapter)) {
5382 if (!adapter->error_recovery.recovery_supported ||
5383 adapter->priv_flags & BE_DISABLE_TPE_RECOVERY)
5384 return -EIO;
5385 status = be_tpe_recover(adapter);
5386 if (status)
5387 goto err;
5388 }
5389
5390 /* Wait for adapter to reach quiescent state before
5391 * destroying queues
5392 */
5393 status = be_fw_wait_ready(adapter);
5394 if (status)
5395 goto err;
5396
5397 adapter->flags |= BE_FLAGS_TRY_RECOVERY;
5398
5399 be_cleanup(adapter);
5400
5401 status = be_resume(adapter);
5402 if (status)
5403 goto err;
5404
5405 adapter->flags &= ~BE_FLAGS_TRY_RECOVERY;
5406
5407 err:
5408 return status;
5409 }
5410
be_err_detection_task(struct work_struct * work)5411 static void be_err_detection_task(struct work_struct *work)
5412 {
5413 struct be_error_recovery *err_rec =
5414 container_of(work, struct be_error_recovery,
5415 err_detection_work.work);
5416 struct be_adapter *adapter =
5417 container_of(err_rec, struct be_adapter,
5418 error_recovery);
5419 u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY;
5420 struct device *dev = &adapter->pdev->dev;
5421 int recovery_status;
5422
5423 be_detect_error(adapter);
5424 if (!be_check_error(adapter, BE_ERROR_HW))
5425 goto reschedule_task;
5426
5427 recovery_status = be_err_recover(adapter);
5428 if (!recovery_status) {
5429 err_rec->recovery_retries = 0;
5430 err_rec->recovery_state = ERR_RECOVERY_ST_NONE;
5431 dev_info(dev, "Adapter recovery successful\n");
5432 goto reschedule_task;
5433 } else if (!lancer_chip(adapter) && err_rec->resched_delay) {
5434 /* BEx/SH recovery state machine */
5435 if (adapter->pf_num == 0 &&
5436 err_rec->recovery_state > ERR_RECOVERY_ST_DETECT)
5437 dev_err(&adapter->pdev->dev,
5438 "Adapter recovery in progress\n");
5439 resched_delay = err_rec->resched_delay;
5440 goto reschedule_task;
5441 } else if (lancer_chip(adapter) && be_virtfn(adapter)) {
5442 /* For VFs, check if PF have allocated resources
5443 * every second.
5444 */
5445 dev_err(dev, "Re-trying adapter recovery\n");
5446 goto reschedule_task;
5447 } else if (lancer_chip(adapter) && err_rec->recovery_retries++ <
5448 ERR_RECOVERY_MAX_RETRY_COUNT) {
5449 /* In case of another error during recovery, it takes 30 sec
5450 * for adapter to come out of error. Retry error recovery after
5451 * this time interval.
5452 */
5453 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
5454 resched_delay = ERR_RECOVERY_RETRY_DELAY;
5455 goto reschedule_task;
5456 } else {
5457 dev_err(dev, "Adapter recovery failed\n");
5458 dev_err(dev, "Please reboot server to recover\n");
5459 }
5460
5461 return;
5462
5463 reschedule_task:
5464 be_schedule_err_detection(adapter, resched_delay);
5465 }
5466
be_log_sfp_info(struct be_adapter * adapter)5467 static void be_log_sfp_info(struct be_adapter *adapter)
5468 {
5469 int status;
5470
5471 status = be_cmd_query_sfp_info(adapter);
5472 if (!status) {
5473 dev_err(&adapter->pdev->dev,
5474 "Port %c: %s Vendor: %s part no: %s",
5475 adapter->port_name,
5476 be_misconfig_evt_port_state[adapter->phy_state],
5477 adapter->phy.vendor_name,
5478 adapter->phy.vendor_pn);
5479 }
5480 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
5481 }
5482
be_worker(struct work_struct * work)5483 static void be_worker(struct work_struct *work)
5484 {
5485 struct be_adapter *adapter =
5486 container_of(work, struct be_adapter, work.work);
5487 struct be_rx_obj *rxo;
5488 int i;
5489
5490 if (be_physfn(adapter) &&
5491 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5492 be_cmd_get_die_temperature(adapter);
5493
5494 /* when interrupts are not yet enabled, just reap any pending
5495 * mcc completions
5496 */
5497 if (!netif_running(adapter->netdev)) {
5498 local_bh_disable();
5499 be_process_mcc(adapter);
5500 local_bh_enable();
5501 goto reschedule;
5502 }
5503
5504 if (!adapter->stats_cmd_sent) {
5505 if (lancer_chip(adapter))
5506 lancer_cmd_get_pport_stats(adapter,
5507 &adapter->stats_cmd);
5508 else
5509 be_cmd_get_stats(adapter, &adapter->stats_cmd);
5510 }
5511
5512 for_all_rx_queues(adapter, rxo, i) {
5513 /* Replenish RX-queues starved due to memory
5514 * allocation failures.
5515 */
5516 if (rxo->rx_post_starved)
5517 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5518 }
5519
5520 /* EQ-delay update for Skyhawk is done while notifying EQ */
5521 if (!skyhawk_chip(adapter))
5522 be_eqd_update(adapter, false);
5523
5524 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5525 be_log_sfp_info(adapter);
5526
5527 reschedule:
5528 adapter->work_counter++;
5529 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
5530 }
5531
be_unmap_pci_bars(struct be_adapter * adapter)5532 static void be_unmap_pci_bars(struct be_adapter *adapter)
5533 {
5534 if (adapter->csr)
5535 pci_iounmap(adapter->pdev, adapter->csr);
5536 if (adapter->db)
5537 pci_iounmap(adapter->pdev, adapter->db);
5538 if (adapter->pcicfg && adapter->pcicfg_mapped)
5539 pci_iounmap(adapter->pdev, adapter->pcicfg);
5540 }
5541
db_bar(struct be_adapter * adapter)5542 static int db_bar(struct be_adapter *adapter)
5543 {
5544 if (lancer_chip(adapter) || be_virtfn(adapter))
5545 return 0;
5546 else
5547 return 4;
5548 }
5549
be_roce_map_pci_bars(struct be_adapter * adapter)5550 static int be_roce_map_pci_bars(struct be_adapter *adapter)
5551 {
5552 if (skyhawk_chip(adapter)) {
5553 adapter->roce_db.size = 4096;
5554 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5555 db_bar(adapter));
5556 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5557 db_bar(adapter));
5558 }
5559 return 0;
5560 }
5561
be_map_pci_bars(struct be_adapter * adapter)5562 static int be_map_pci_bars(struct be_adapter *adapter)
5563 {
5564 struct pci_dev *pdev = adapter->pdev;
5565 u8 __iomem *addr;
5566 u32 sli_intf;
5567
5568 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5569 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5570 SLI_INTF_FAMILY_SHIFT;
5571 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5572
5573 if (BEx_chip(adapter) && be_physfn(adapter)) {
5574 adapter->csr = pci_iomap(pdev, 2, 0);
5575 if (!adapter->csr)
5576 return -ENOMEM;
5577 }
5578
5579 addr = pci_iomap(pdev, db_bar(adapter), 0);
5580 if (!addr)
5581 goto pci_map_err;
5582 adapter->db = addr;
5583
5584 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5585 if (be_physfn(adapter)) {
5586 /* PCICFG is the 2nd BAR in BE2 */
5587 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5588 if (!addr)
5589 goto pci_map_err;
5590 adapter->pcicfg = addr;
5591 adapter->pcicfg_mapped = true;
5592 } else {
5593 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5594 adapter->pcicfg_mapped = false;
5595 }
5596 }
5597
5598 be_roce_map_pci_bars(adapter);
5599 return 0;
5600
5601 pci_map_err:
5602 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5603 be_unmap_pci_bars(adapter);
5604 return -ENOMEM;
5605 }
5606
be_drv_cleanup(struct be_adapter * adapter)5607 static void be_drv_cleanup(struct be_adapter *adapter)
5608 {
5609 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5610 struct device *dev = &adapter->pdev->dev;
5611
5612 if (mem->va)
5613 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5614
5615 mem = &adapter->rx_filter;
5616 if (mem->va)
5617 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5618
5619 mem = &adapter->stats_cmd;
5620 if (mem->va)
5621 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5622 }
5623
5624 /* Allocate and initialize various fields in be_adapter struct */
be_drv_init(struct be_adapter * adapter)5625 static int be_drv_init(struct be_adapter *adapter)
5626 {
5627 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5628 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5629 struct be_dma_mem *rx_filter = &adapter->rx_filter;
5630 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5631 struct device *dev = &adapter->pdev->dev;
5632 int status = 0;
5633
5634 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5635 mbox_mem_alloc->va = dma_alloc_coherent(dev, mbox_mem_alloc->size,
5636 &mbox_mem_alloc->dma,
5637 GFP_KERNEL);
5638 if (!mbox_mem_alloc->va)
5639 return -ENOMEM;
5640
5641 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5642 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5643 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5644
5645 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5646 rx_filter->va = dma_alloc_coherent(dev, rx_filter->size,
5647 &rx_filter->dma, GFP_KERNEL);
5648 if (!rx_filter->va) {
5649 status = -ENOMEM;
5650 goto free_mbox;
5651 }
5652
5653 if (lancer_chip(adapter))
5654 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5655 else if (BE2_chip(adapter))
5656 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5657 else if (BE3_chip(adapter))
5658 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5659 else
5660 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5661 stats_cmd->va = dma_alloc_coherent(dev, stats_cmd->size,
5662 &stats_cmd->dma, GFP_KERNEL);
5663 if (!stats_cmd->va) {
5664 status = -ENOMEM;
5665 goto free_rx_filter;
5666 }
5667
5668 mutex_init(&adapter->mbox_lock);
5669 mutex_init(&adapter->rx_filter_lock);
5670 spin_lock_init(&adapter->mcc_lock);
5671 spin_lock_init(&adapter->mcc_cq_lock);
5672 init_completion(&adapter->et_cmd_compl);
5673
5674 pci_save_state(adapter->pdev);
5675
5676 INIT_DELAYED_WORK(&adapter->work, be_worker);
5677
5678 adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE;
5679 adapter->error_recovery.resched_delay = 0;
5680 INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work,
5681 be_err_detection_task);
5682
5683 adapter->rx_fc = true;
5684 adapter->tx_fc = true;
5685
5686 /* Must be a power of 2 or else MODULO will BUG_ON */
5687 adapter->be_get_temp_freq = 64;
5688
5689 return 0;
5690
5691 free_rx_filter:
5692 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5693 free_mbox:
5694 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5695 mbox_mem_alloc->dma);
5696 return status;
5697 }
5698
be_remove(struct pci_dev * pdev)5699 static void be_remove(struct pci_dev *pdev)
5700 {
5701 struct be_adapter *adapter = pci_get_drvdata(pdev);
5702
5703 if (!adapter)
5704 return;
5705
5706 be_roce_dev_remove(adapter);
5707 be_intr_set(adapter, false);
5708
5709 be_cancel_err_detection(adapter);
5710
5711 unregister_netdev(adapter->netdev);
5712
5713 be_clear(adapter);
5714
5715 if (!pci_vfs_assigned(adapter->pdev))
5716 be_cmd_reset_function(adapter);
5717
5718 /* tell fw we're done with firing cmds */
5719 be_cmd_fw_clean(adapter);
5720
5721 be_unmap_pci_bars(adapter);
5722 be_drv_cleanup(adapter);
5723
5724 pci_release_regions(pdev);
5725 pci_disable_device(pdev);
5726
5727 free_netdev(adapter->netdev);
5728 }
5729
be_hwmon_show_temp(struct device * dev,struct device_attribute * dev_attr,char * buf)5730 static ssize_t be_hwmon_show_temp(struct device *dev,
5731 struct device_attribute *dev_attr,
5732 char *buf)
5733 {
5734 struct be_adapter *adapter = dev_get_drvdata(dev);
5735
5736 /* Unit: millidegree Celsius */
5737 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5738 return -EIO;
5739 else
5740 return sprintf(buf, "%u\n",
5741 adapter->hwmon_info.be_on_die_temp * 1000);
5742 }
5743
5744 static SENSOR_DEVICE_ATTR(temp1_input, 0444,
5745 be_hwmon_show_temp, NULL, 1);
5746
5747 static struct attribute *be_hwmon_attrs[] = {
5748 &sensor_dev_attr_temp1_input.dev_attr.attr,
5749 NULL
5750 };
5751
5752 ATTRIBUTE_GROUPS(be_hwmon);
5753
mc_name(struct be_adapter * adapter)5754 static char *mc_name(struct be_adapter *adapter)
5755 {
5756 char *str = ""; /* default */
5757
5758 switch (adapter->mc_type) {
5759 case UMC:
5760 str = "UMC";
5761 break;
5762 case FLEX10:
5763 str = "FLEX10";
5764 break;
5765 case vNIC1:
5766 str = "vNIC-1";
5767 break;
5768 case nPAR:
5769 str = "nPAR";
5770 break;
5771 case UFP:
5772 str = "UFP";
5773 break;
5774 case vNIC2:
5775 str = "vNIC-2";
5776 break;
5777 default:
5778 str = "";
5779 }
5780
5781 return str;
5782 }
5783
func_name(struct be_adapter * adapter)5784 static inline char *func_name(struct be_adapter *adapter)
5785 {
5786 return be_physfn(adapter) ? "PF" : "VF";
5787 }
5788
nic_name(struct pci_dev * pdev)5789 static inline char *nic_name(struct pci_dev *pdev)
5790 {
5791 switch (pdev->device) {
5792 case OC_DEVICE_ID1:
5793 return OC_NAME;
5794 case OC_DEVICE_ID2:
5795 return OC_NAME_BE;
5796 case OC_DEVICE_ID3:
5797 case OC_DEVICE_ID4:
5798 return OC_NAME_LANCER;
5799 case BE_DEVICE_ID2:
5800 return BE3_NAME;
5801 case OC_DEVICE_ID5:
5802 case OC_DEVICE_ID6:
5803 return OC_NAME_SH;
5804 default:
5805 return BE_NAME;
5806 }
5807 }
5808
be_probe(struct pci_dev * pdev,const struct pci_device_id * pdev_id)5809 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5810 {
5811 struct be_adapter *adapter;
5812 struct net_device *netdev;
5813 int status = 0;
5814
5815 status = pci_enable_device(pdev);
5816 if (status)
5817 goto do_none;
5818
5819 status = pci_request_regions(pdev, DRV_NAME);
5820 if (status)
5821 goto disable_dev;
5822 pci_set_master(pdev);
5823
5824 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5825 if (!netdev) {
5826 status = -ENOMEM;
5827 goto rel_reg;
5828 }
5829 adapter = netdev_priv(netdev);
5830 adapter->pdev = pdev;
5831 pci_set_drvdata(pdev, adapter);
5832 adapter->netdev = netdev;
5833 SET_NETDEV_DEV(netdev, &pdev->dev);
5834
5835 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5836 if (status) {
5837 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5838 goto free_netdev;
5839 }
5840
5841 status = be_map_pci_bars(adapter);
5842 if (status)
5843 goto free_netdev;
5844
5845 status = be_drv_init(adapter);
5846 if (status)
5847 goto unmap_bars;
5848
5849 status = be_setup(adapter);
5850 if (status)
5851 goto drv_cleanup;
5852
5853 be_netdev_init(netdev);
5854 status = register_netdev(netdev);
5855 if (status != 0)
5856 goto unsetup;
5857
5858 be_roce_dev_add(adapter);
5859
5860 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5861 adapter->error_recovery.probe_time = jiffies;
5862
5863 /* On Die temperature not supported for VF. */
5864 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5865 adapter->hwmon_info.hwmon_dev =
5866 devm_hwmon_device_register_with_groups(&pdev->dev,
5867 DRV_NAME,
5868 adapter,
5869 be_hwmon_groups);
5870 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5871 }
5872
5873 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5874 func_name(adapter), mc_name(adapter), adapter->port_name);
5875
5876 return 0;
5877
5878 unsetup:
5879 be_clear(adapter);
5880 drv_cleanup:
5881 be_drv_cleanup(adapter);
5882 unmap_bars:
5883 be_unmap_pci_bars(adapter);
5884 free_netdev:
5885 free_netdev(netdev);
5886 rel_reg:
5887 pci_release_regions(pdev);
5888 disable_dev:
5889 pci_disable_device(pdev);
5890 do_none:
5891 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5892 return status;
5893 }
5894
be_suspend(struct device * dev_d)5895 static int __maybe_unused be_suspend(struct device *dev_d)
5896 {
5897 struct be_adapter *adapter = dev_get_drvdata(dev_d);
5898
5899 be_intr_set(adapter, false);
5900 be_cancel_err_detection(adapter);
5901
5902 be_cleanup(adapter);
5903
5904 return 0;
5905 }
5906
be_pci_resume(struct device * dev_d)5907 static int __maybe_unused be_pci_resume(struct device *dev_d)
5908 {
5909 struct be_adapter *adapter = dev_get_drvdata(dev_d);
5910 int status = 0;
5911
5912 status = be_resume(adapter);
5913 if (status)
5914 return status;
5915
5916 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5917
5918 return 0;
5919 }
5920
5921 /*
5922 * An FLR will stop BE from DMAing any data.
5923 */
be_shutdown(struct pci_dev * pdev)5924 static void be_shutdown(struct pci_dev *pdev)
5925 {
5926 struct be_adapter *adapter = pci_get_drvdata(pdev);
5927
5928 if (!adapter)
5929 return;
5930
5931 be_roce_dev_shutdown(adapter);
5932 cancel_delayed_work_sync(&adapter->work);
5933 be_cancel_err_detection(adapter);
5934
5935 netif_device_detach(adapter->netdev);
5936
5937 be_cmd_reset_function(adapter);
5938
5939 pci_disable_device(pdev);
5940 }
5941
be_eeh_err_detected(struct pci_dev * pdev,pci_channel_state_t state)5942 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
5943 pci_channel_state_t state)
5944 {
5945 struct be_adapter *adapter = pci_get_drvdata(pdev);
5946
5947 dev_err(&adapter->pdev->dev, "EEH error detected\n");
5948
5949 be_roce_dev_remove(adapter);
5950
5951 if (!be_check_error(adapter, BE_ERROR_EEH)) {
5952 be_set_error(adapter, BE_ERROR_EEH);
5953
5954 be_cancel_err_detection(adapter);
5955
5956 be_cleanup(adapter);
5957 }
5958
5959 if (state == pci_channel_io_perm_failure)
5960 return PCI_ERS_RESULT_DISCONNECT;
5961
5962 pci_disable_device(pdev);
5963
5964 /* The error could cause the FW to trigger a flash debug dump.
5965 * Resetting the card while flash dump is in progress
5966 * can cause it not to recover; wait for it to finish.
5967 * Wait only for first function as it is needed only once per
5968 * adapter.
5969 */
5970 if (pdev->devfn == 0)
5971 ssleep(30);
5972
5973 return PCI_ERS_RESULT_NEED_RESET;
5974 }
5975
be_eeh_reset(struct pci_dev * pdev)5976 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
5977 {
5978 struct be_adapter *adapter = pci_get_drvdata(pdev);
5979 int status;
5980
5981 dev_info(&adapter->pdev->dev, "EEH reset\n");
5982
5983 status = pci_enable_device(pdev);
5984 if (status)
5985 return PCI_ERS_RESULT_DISCONNECT;
5986
5987 pci_set_master(pdev);
5988 pci_restore_state(pdev);
5989
5990 /* Check if card is ok and fw is ready */
5991 dev_info(&adapter->pdev->dev,
5992 "Waiting for FW to be ready after EEH reset\n");
5993 status = be_fw_wait_ready(adapter);
5994 if (status)
5995 return PCI_ERS_RESULT_DISCONNECT;
5996
5997 be_clear_error(adapter, BE_CLEAR_ALL);
5998 return PCI_ERS_RESULT_RECOVERED;
5999 }
6000
be_eeh_resume(struct pci_dev * pdev)6001 static void be_eeh_resume(struct pci_dev *pdev)
6002 {
6003 int status = 0;
6004 struct be_adapter *adapter = pci_get_drvdata(pdev);
6005
6006 dev_info(&adapter->pdev->dev, "EEH resume\n");
6007
6008 pci_save_state(pdev);
6009
6010 status = be_resume(adapter);
6011 if (status)
6012 goto err;
6013
6014 be_roce_dev_add(adapter);
6015
6016 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
6017 return;
6018 err:
6019 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
6020 }
6021
be_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)6022 static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
6023 {
6024 struct be_adapter *adapter = pci_get_drvdata(pdev);
6025 struct be_resources vft_res = {0};
6026 int status;
6027
6028 if (!num_vfs)
6029 be_vf_clear(adapter);
6030
6031 adapter->num_vfs = num_vfs;
6032
6033 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
6034 dev_warn(&pdev->dev,
6035 "Cannot disable VFs while they are assigned\n");
6036 return -EBUSY;
6037 }
6038
6039 /* When the HW is in SRIOV capable configuration, the PF-pool resources
6040 * are equally distributed across the max-number of VFs. The user may
6041 * request only a subset of the max-vfs to be enabled.
6042 * Based on num_vfs, redistribute the resources across num_vfs so that
6043 * each VF will have access to more number of resources.
6044 * This facility is not available in BE3 FW.
6045 * Also, this is done by FW in Lancer chip.
6046 */
6047 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
6048 be_calculate_vf_res(adapter, adapter->num_vfs,
6049 &vft_res);
6050 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
6051 adapter->num_vfs, &vft_res);
6052 if (status)
6053 dev_err(&pdev->dev,
6054 "Failed to optimize SR-IOV resources\n");
6055 }
6056
6057 status = be_get_resources(adapter);
6058 if (status)
6059 return be_cmd_status(status);
6060
6061 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
6062 rtnl_lock();
6063 status = be_update_queues(adapter);
6064 rtnl_unlock();
6065 if (status)
6066 return be_cmd_status(status);
6067
6068 if (adapter->num_vfs)
6069 status = be_vf_setup(adapter);
6070
6071 if (!status)
6072 return adapter->num_vfs;
6073
6074 return 0;
6075 }
6076
6077 static const struct pci_error_handlers be_eeh_handlers = {
6078 .error_detected = be_eeh_err_detected,
6079 .slot_reset = be_eeh_reset,
6080 .resume = be_eeh_resume,
6081 };
6082
6083 static SIMPLE_DEV_PM_OPS(be_pci_pm_ops, be_suspend, be_pci_resume);
6084
6085 static struct pci_driver be_driver = {
6086 .name = DRV_NAME,
6087 .id_table = be_dev_ids,
6088 .probe = be_probe,
6089 .remove = be_remove,
6090 .driver.pm = &be_pci_pm_ops,
6091 .shutdown = be_shutdown,
6092 .sriov_configure = be_pci_sriov_configure,
6093 .err_handler = &be_eeh_handlers
6094 };
6095
be_init_module(void)6096 static int __init be_init_module(void)
6097 {
6098 int status;
6099
6100 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
6101 rx_frag_size != 2048) {
6102 printk(KERN_WARNING DRV_NAME
6103 " : Module param rx_frag_size must be 2048/4096/8192."
6104 " Using 2048\n");
6105 rx_frag_size = 2048;
6106 }
6107
6108 if (num_vfs > 0) {
6109 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
6110 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
6111 }
6112
6113 be_wq = create_singlethread_workqueue("be_wq");
6114 if (!be_wq) {
6115 pr_warn(DRV_NAME "workqueue creation failed\n");
6116 return -1;
6117 }
6118
6119 be_err_recovery_workq =
6120 create_singlethread_workqueue("be_err_recover");
6121 if (!be_err_recovery_workq)
6122 pr_warn(DRV_NAME "Could not create error recovery workqueue\n");
6123
6124 status = pci_register_driver(&be_driver);
6125 if (status) {
6126 destroy_workqueue(be_wq);
6127 be_destroy_err_recovery_workq();
6128 }
6129 return status;
6130 }
6131 module_init(be_init_module);
6132
be_exit_module(void)6133 static void __exit be_exit_module(void)
6134 {
6135 pci_unregister_driver(&be_driver);
6136
6137 be_destroy_err_recovery_workq();
6138
6139 if (be_wq)
6140 destroy_workqueue(be_wq);
6141 }
6142 module_exit(be_exit_module);
6143