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27 /* num_vfs module param is obsolete.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 deferring 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 * incorrectly 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,struct be_wrb_params * wrb_params)1298 static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
1299 struct sk_buff **skb,
1300 struct be_wrb_params *wrb_params)
1301 {
1302 struct ethhdr *eh = (struct ethhdr *)(*skb)->data;
1303 bool os2bmc = false;
1304
1305 if (!be_is_os2bmc_enabled(adapter))
1306 goto done;
1307
1308 if (!is_multicast_ether_addr(eh->h_dest))
1309 goto done;
1310
1311 if (is_mc_allowed_on_bmc(adapter, eh) ||
1312 is_bc_allowed_on_bmc(adapter, eh) ||
1313 is_arp_allowed_on_bmc(adapter, (*skb))) {
1314 os2bmc = true;
1315 goto done;
1316 }
1317
1318 if ((*skb)->protocol == htons(ETH_P_IPV6)) {
1319 struct ipv6hdr *hdr = ipv6_hdr((*skb));
1320 u8 nexthdr = hdr->nexthdr;
1321
1322 if (nexthdr == IPPROTO_ICMPV6) {
1323 struct icmp6hdr *icmp6 = icmp6_hdr((*skb));
1324
1325 switch (icmp6->icmp6_type) {
1326 case NDISC_ROUTER_ADVERTISEMENT:
1327 os2bmc = is_ipv6_ra_filt_enabled(adapter);
1328 goto done;
1329 case NDISC_NEIGHBOUR_ADVERTISEMENT:
1330 os2bmc = is_ipv6_na_filt_enabled(adapter);
1331 goto done;
1332 default:
1333 break;
1334 }
1335 }
1336 }
1337
1338 if (is_udp_pkt((*skb))) {
1339 struct udphdr *udp = udp_hdr((*skb));
1340
1341 switch (ntohs(udp->dest)) {
1342 case DHCP_CLIENT_PORT:
1343 os2bmc = is_dhcp_client_filt_enabled(adapter);
1344 goto done;
1345 case DHCP_SERVER_PORT:
1346 os2bmc = is_dhcp_srvr_filt_enabled(adapter);
1347 goto done;
1348 case NET_BIOS_PORT1:
1349 case NET_BIOS_PORT2:
1350 os2bmc = is_nbios_filt_enabled(adapter);
1351 goto done;
1352 case DHCPV6_RAS_PORT:
1353 os2bmc = is_ipv6_ras_filt_enabled(adapter);
1354 goto done;
1355 default:
1356 break;
1357 }
1358 }
1359 done:
1360 /* For packets over a vlan, which are destined
1361 * to BMC, asic expects the vlan to be inline in the packet.
1362 */
1363 if (os2bmc)
1364 *skb = be_insert_vlan_in_pkt(adapter, *skb, wrb_params);
1365
1366 return os2bmc;
1367 }
1368
be_xmit(struct sk_buff * skb,struct net_device * netdev)1369 static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
1370 {
1371 struct be_adapter *adapter = netdev_priv(netdev);
1372 u16 q_idx = skb_get_queue_mapping(skb);
1373 struct be_tx_obj *txo = &adapter->tx_obj[q_idx];
1374 struct be_wrb_params wrb_params = { 0 };
1375 bool flush = !netdev_xmit_more();
1376 u16 wrb_cnt;
1377
1378 skb = be_xmit_workarounds(adapter, skb, &wrb_params);
1379 if (unlikely(!skb))
1380 goto drop;
1381
1382 be_get_wrb_params_from_skb(adapter, skb, &wrb_params);
1383
1384 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1385 if (unlikely(!wrb_cnt))
1386 goto drop_skb;
1387
1388 /* if os2bmc is enabled and if the pkt is destined to bmc,
1389 * enqueue the pkt a 2nd time with mgmt bit set.
1390 */
1391 if (be_send_pkt_to_bmc(adapter, &skb, &wrb_params)) {
1392 BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);
1393 wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1394 if (unlikely(!wrb_cnt))
1395 goto drop_skb;
1396 else
1397 skb_get(skb);
1398 }
1399
1400 if (be_is_txq_full(txo)) {
1401 netif_stop_subqueue(netdev, q_idx);
1402 tx_stats(txo)->tx_stops++;
1403 }
1404
1405 if (flush || __netif_subqueue_stopped(netdev, q_idx))
1406 be_xmit_flush(adapter, txo);
1407
1408 return NETDEV_TX_OK;
1409 drop_skb:
1410 dev_kfree_skb_any(skb);
1411 drop:
1412 tx_stats(txo)->tx_drv_drops++;
1413 /* Flush the already enqueued tx requests */
1414 if (flush && txo->pend_wrb_cnt)
1415 be_xmit_flush(adapter, txo);
1416
1417 return NETDEV_TX_OK;
1418 }
1419
be_tx_timeout(struct net_device * netdev,unsigned int txqueue)1420 static void be_tx_timeout(struct net_device *netdev, unsigned int txqueue)
1421 {
1422 struct be_adapter *adapter = netdev_priv(netdev);
1423 struct device *dev = &adapter->pdev->dev;
1424 struct be_tx_obj *txo;
1425 struct sk_buff *skb;
1426 struct tcphdr *tcphdr;
1427 struct udphdr *udphdr;
1428 u32 *entry;
1429 int status;
1430 int i, j;
1431
1432 for_all_tx_queues(adapter, txo, i) {
1433 dev_info(dev, "TXQ Dump: %d H: %d T: %d used: %d, qid: 0x%x\n",
1434 i, txo->q.head, txo->q.tail,
1435 atomic_read(&txo->q.used), txo->q.id);
1436
1437 entry = txo->q.dma_mem.va;
1438 for (j = 0; j < TX_Q_LEN * 4; j += 4) {
1439 if (entry[j] != 0 || entry[j + 1] != 0 ||
1440 entry[j + 2] != 0 || entry[j + 3] != 0) {
1441 dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",
1442 j, entry[j], entry[j + 1],
1443 entry[j + 2], entry[j + 3]);
1444 }
1445 }
1446
1447 entry = txo->cq.dma_mem.va;
1448 dev_info(dev, "TXCQ Dump: %d H: %d T: %d used: %d\n",
1449 i, txo->cq.head, txo->cq.tail,
1450 atomic_read(&txo->cq.used));
1451 for (j = 0; j < TX_CQ_LEN * 4; j += 4) {
1452 if (entry[j] != 0 || entry[j + 1] != 0 ||
1453 entry[j + 2] != 0 || entry[j + 3] != 0) {
1454 dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",
1455 j, entry[j], entry[j + 1],
1456 entry[j + 2], entry[j + 3]);
1457 }
1458 }
1459
1460 for (j = 0; j < TX_Q_LEN; j++) {
1461 if (txo->sent_skb_list[j]) {
1462 skb = txo->sent_skb_list[j];
1463 if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
1464 tcphdr = tcp_hdr(skb);
1465 dev_info(dev, "TCP source port %d\n",
1466 ntohs(tcphdr->source));
1467 dev_info(dev, "TCP dest port %d\n",
1468 ntohs(tcphdr->dest));
1469 dev_info(dev, "TCP sequence num %u\n",
1470 ntohl(tcphdr->seq));
1471 dev_info(dev, "TCP ack_seq %u\n",
1472 ntohl(tcphdr->ack_seq));
1473 } else if (ip_hdr(skb)->protocol ==
1474 IPPROTO_UDP) {
1475 udphdr = udp_hdr(skb);
1476 dev_info(dev, "UDP source port %d\n",
1477 ntohs(udphdr->source));
1478 dev_info(dev, "UDP dest port %d\n",
1479 ntohs(udphdr->dest));
1480 }
1481 dev_info(dev, "skb[%d] %p len %d proto 0x%x\n",
1482 j, skb, skb->len, skb->protocol);
1483 }
1484 }
1485 }
1486
1487 if (lancer_chip(adapter)) {
1488 dev_info(dev, "Initiating reset due to tx timeout\n");
1489 dev_info(dev, "Resetting adapter\n");
1490 status = lancer_physdev_ctrl(adapter,
1491 PHYSDEV_CONTROL_FW_RESET_MASK);
1492 if (status)
1493 dev_err(dev, "Reset failed .. Reboot server\n");
1494 }
1495 }
1496
be_in_all_promisc(struct be_adapter * adapter)1497 static inline bool be_in_all_promisc(struct be_adapter *adapter)
1498 {
1499 return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
1500 BE_IF_FLAGS_ALL_PROMISCUOUS;
1501 }
1502
be_set_vlan_promisc(struct be_adapter * adapter)1503 static int be_set_vlan_promisc(struct be_adapter *adapter)
1504 {
1505 struct device *dev = &adapter->pdev->dev;
1506 int status;
1507
1508 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)
1509 return 0;
1510
1511 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);
1512 if (!status) {
1513 dev_info(dev, "Enabled VLAN promiscuous mode\n");
1514 adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;
1515 } else {
1516 dev_err(dev, "Failed to enable VLAN promiscuous mode\n");
1517 }
1518 return status;
1519 }
1520
be_clear_vlan_promisc(struct be_adapter * adapter)1521 static int be_clear_vlan_promisc(struct be_adapter *adapter)
1522 {
1523 struct device *dev = &adapter->pdev->dev;
1524 int status;
1525
1526 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);
1527 if (!status) {
1528 dev_info(dev, "Disabling VLAN promiscuous mode\n");
1529 adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
1530 }
1531 return status;
1532 }
1533
1534 /*
1535 * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1536 * If the user configures more, place BE in vlan promiscuous mode.
1537 */
be_vid_config(struct be_adapter * adapter)1538 static int be_vid_config(struct be_adapter *adapter)
1539 {
1540 struct device *dev = &adapter->pdev->dev;
1541 u16 vids[BE_NUM_VLANS_SUPPORTED];
1542 u16 num = 0, i = 0;
1543 int status = 0;
1544
1545 /* No need to change the VLAN state if the I/F is in promiscuous */
1546 if (adapter->netdev->flags & IFF_PROMISC)
1547 return 0;
1548
1549 if (adapter->vlans_added > be_max_vlans(adapter))
1550 return be_set_vlan_promisc(adapter);
1551
1552 if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
1553 status = be_clear_vlan_promisc(adapter);
1554 if (status)
1555 return status;
1556 }
1557 /* Construct VLAN Table to give to HW */
1558 for_each_set_bit(i, adapter->vids, VLAN_N_VID)
1559 vids[num++] = cpu_to_le16(i);
1560
1561 status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);
1562 if (status) {
1563 dev_err(dev, "Setting HW VLAN filtering failed\n");
1564 /* Set to VLAN promisc mode as setting VLAN filter failed */
1565 if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||
1566 addl_status(status) ==
1567 MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)
1568 return be_set_vlan_promisc(adapter);
1569 }
1570 return status;
1571 }
1572
be_vlan_add_vid(struct net_device * netdev,__be16 proto,u16 vid)1573 static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1574 {
1575 struct be_adapter *adapter = netdev_priv(netdev);
1576 int status = 0;
1577
1578 mutex_lock(&adapter->rx_filter_lock);
1579
1580 /* Packets with VID 0 are always received by Lancer by default */
1581 if (lancer_chip(adapter) && vid == 0)
1582 goto done;
1583
1584 if (test_bit(vid, adapter->vids))
1585 goto done;
1586
1587 set_bit(vid, adapter->vids);
1588 adapter->vlans_added++;
1589
1590 status = be_vid_config(adapter);
1591 done:
1592 mutex_unlock(&adapter->rx_filter_lock);
1593 return status;
1594 }
1595
be_vlan_rem_vid(struct net_device * netdev,__be16 proto,u16 vid)1596 static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1597 {
1598 struct be_adapter *adapter = netdev_priv(netdev);
1599 int status = 0;
1600
1601 mutex_lock(&adapter->rx_filter_lock);
1602
1603 /* Packets with VID 0 are always received by Lancer by default */
1604 if (lancer_chip(adapter) && vid == 0)
1605 goto done;
1606
1607 if (!test_bit(vid, adapter->vids))
1608 goto done;
1609
1610 clear_bit(vid, adapter->vids);
1611 adapter->vlans_added--;
1612
1613 status = be_vid_config(adapter);
1614 done:
1615 mutex_unlock(&adapter->rx_filter_lock);
1616 return status;
1617 }
1618
be_set_all_promisc(struct be_adapter * adapter)1619 static void be_set_all_promisc(struct be_adapter *adapter)
1620 {
1621 be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);
1622 adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;
1623 }
1624
be_set_mc_promisc(struct be_adapter * adapter)1625 static void be_set_mc_promisc(struct be_adapter *adapter)
1626 {
1627 int status;
1628
1629 if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)
1630 return;
1631
1632 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);
1633 if (!status)
1634 adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;
1635 }
1636
be_set_uc_promisc(struct be_adapter * adapter)1637 static void be_set_uc_promisc(struct be_adapter *adapter)
1638 {
1639 int status;
1640
1641 if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS)
1642 return;
1643
1644 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, ON);
1645 if (!status)
1646 adapter->if_flags |= BE_IF_FLAGS_PROMISCUOUS;
1647 }
1648
be_clear_uc_promisc(struct be_adapter * adapter)1649 static void be_clear_uc_promisc(struct be_adapter *adapter)
1650 {
1651 int status;
1652
1653 if (!(adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS))
1654 return;
1655
1656 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, OFF);
1657 if (!status)
1658 adapter->if_flags &= ~BE_IF_FLAGS_PROMISCUOUS;
1659 }
1660
1661 /* The below 2 functions are the callback args for __dev_mc_sync/dev_uc_sync().
1662 * We use a single callback function for both sync and unsync. We really don't
1663 * add/remove addresses through this callback. But, we use it to detect changes
1664 * to the uc/mc lists. The entire uc/mc list is programmed in be_set_rx_mode().
1665 */
be_uc_list_update(struct net_device * netdev,const unsigned char * addr)1666 static int be_uc_list_update(struct net_device *netdev,
1667 const unsigned char *addr)
1668 {
1669 struct be_adapter *adapter = netdev_priv(netdev);
1670
1671 adapter->update_uc_list = true;
1672 return 0;
1673 }
1674
be_mc_list_update(struct net_device * netdev,const unsigned char * addr)1675 static int be_mc_list_update(struct net_device *netdev,
1676 const unsigned char *addr)
1677 {
1678 struct be_adapter *adapter = netdev_priv(netdev);
1679
1680 adapter->update_mc_list = true;
1681 return 0;
1682 }
1683
be_set_mc_list(struct be_adapter * adapter)1684 static void be_set_mc_list(struct be_adapter *adapter)
1685 {
1686 struct net_device *netdev = adapter->netdev;
1687 struct netdev_hw_addr *ha;
1688 bool mc_promisc = false;
1689 int status;
1690
1691 netif_addr_lock_bh(netdev);
1692 __dev_mc_sync(netdev, be_mc_list_update, be_mc_list_update);
1693
1694 if (netdev->flags & IFF_PROMISC) {
1695 adapter->update_mc_list = false;
1696 } else if (netdev->flags & IFF_ALLMULTI ||
1697 netdev_mc_count(netdev) > be_max_mc(adapter)) {
1698 /* Enable multicast promisc if num configured exceeds
1699 * what we support
1700 */
1701 mc_promisc = true;
1702 adapter->update_mc_list = false;
1703 } else if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) {
1704 /* Update mc-list unconditionally if the iface was previously
1705 * in mc-promisc mode and now is out of that mode.
1706 */
1707 adapter->update_mc_list = true;
1708 }
1709
1710 if (adapter->update_mc_list) {
1711 int i = 0;
1712
1713 /* cache the mc-list in adapter */
1714 netdev_for_each_mc_addr(ha, netdev) {
1715 ether_addr_copy(adapter->mc_list[i].mac, ha->addr);
1716 i++;
1717 }
1718 adapter->mc_count = netdev_mc_count(netdev);
1719 }
1720 netif_addr_unlock_bh(netdev);
1721
1722 if (mc_promisc) {
1723 be_set_mc_promisc(adapter);
1724 } else if (adapter->update_mc_list) {
1725 status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);
1726 if (!status)
1727 adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;
1728 else
1729 be_set_mc_promisc(adapter);
1730
1731 adapter->update_mc_list = false;
1732 }
1733 }
1734
be_clear_mc_list(struct be_adapter * adapter)1735 static void be_clear_mc_list(struct be_adapter *adapter)
1736 {
1737 struct net_device *netdev = adapter->netdev;
1738
1739 __dev_mc_unsync(netdev, NULL);
1740 be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, OFF);
1741 adapter->mc_count = 0;
1742 }
1743
be_uc_mac_add(struct be_adapter * adapter,int uc_idx)1744 static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx)
1745 {
1746 if (ether_addr_equal(adapter->uc_list[uc_idx].mac, adapter->dev_mac)) {
1747 adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0];
1748 return 0;
1749 }
1750
1751 return be_cmd_pmac_add(adapter, adapter->uc_list[uc_idx].mac,
1752 adapter->if_handle,
1753 &adapter->pmac_id[uc_idx + 1], 0);
1754 }
1755
be_uc_mac_del(struct be_adapter * adapter,int pmac_id)1756 static void be_uc_mac_del(struct be_adapter *adapter, int pmac_id)
1757 {
1758 if (pmac_id == adapter->pmac_id[0])
1759 return;
1760
1761 be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
1762 }
1763
be_set_uc_list(struct be_adapter * adapter)1764 static void be_set_uc_list(struct be_adapter *adapter)
1765 {
1766 struct net_device *netdev = adapter->netdev;
1767 struct netdev_hw_addr *ha;
1768 bool uc_promisc = false;
1769 int curr_uc_macs = 0, i;
1770
1771 netif_addr_lock_bh(netdev);
1772 __dev_uc_sync(netdev, be_uc_list_update, be_uc_list_update);
1773
1774 if (netdev->flags & IFF_PROMISC) {
1775 adapter->update_uc_list = false;
1776 } else if (netdev_uc_count(netdev) > (be_max_uc(adapter) - 1)) {
1777 uc_promisc = true;
1778 adapter->update_uc_list = false;
1779 } else if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) {
1780 /* Update uc-list unconditionally if the iface was previously
1781 * in uc-promisc mode and now is out of that mode.
1782 */
1783 adapter->update_uc_list = true;
1784 }
1785
1786 if (adapter->update_uc_list) {
1787 /* cache the uc-list in adapter array */
1788 i = 0;
1789 netdev_for_each_uc_addr(ha, netdev) {
1790 ether_addr_copy(adapter->uc_list[i].mac, ha->addr);
1791 i++;
1792 }
1793 curr_uc_macs = netdev_uc_count(netdev);
1794 }
1795 netif_addr_unlock_bh(netdev);
1796
1797 if (uc_promisc) {
1798 be_set_uc_promisc(adapter);
1799 } else if (adapter->update_uc_list) {
1800 be_clear_uc_promisc(adapter);
1801
1802 for (i = 0; i < adapter->uc_macs; i++)
1803 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1804
1805 for (i = 0; i < curr_uc_macs; i++)
1806 be_uc_mac_add(adapter, i);
1807 adapter->uc_macs = curr_uc_macs;
1808 adapter->update_uc_list = false;
1809 }
1810 }
1811
be_clear_uc_list(struct be_adapter * adapter)1812 static void be_clear_uc_list(struct be_adapter *adapter)
1813 {
1814 struct net_device *netdev = adapter->netdev;
1815 int i;
1816
1817 __dev_uc_unsync(netdev, NULL);
1818 for (i = 0; i < adapter->uc_macs; i++)
1819 be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1820
1821 adapter->uc_macs = 0;
1822 }
1823
__be_set_rx_mode(struct be_adapter * adapter)1824 static void __be_set_rx_mode(struct be_adapter *adapter)
1825 {
1826 struct net_device *netdev = adapter->netdev;
1827
1828 mutex_lock(&adapter->rx_filter_lock);
1829
1830 if (netdev->flags & IFF_PROMISC) {
1831 if (!be_in_all_promisc(adapter))
1832 be_set_all_promisc(adapter);
1833 } else if (be_in_all_promisc(adapter)) {
1834 /* We need to re-program the vlan-list or clear
1835 * vlan-promisc mode (if needed) when the interface
1836 * comes out of promisc mode.
1837 */
1838 be_vid_config(adapter);
1839 }
1840
1841 be_set_uc_list(adapter);
1842 be_set_mc_list(adapter);
1843
1844 mutex_unlock(&adapter->rx_filter_lock);
1845 }
1846
be_work_set_rx_mode(struct work_struct * work)1847 static void be_work_set_rx_mode(struct work_struct *work)
1848 {
1849 struct be_cmd_work *cmd_work =
1850 container_of(work, struct be_cmd_work, work);
1851
1852 __be_set_rx_mode(cmd_work->adapter);
1853 kfree(cmd_work);
1854 }
1855
be_set_vf_mac(struct net_device * netdev,int vf,u8 * mac)1856 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1857 {
1858 struct be_adapter *adapter = netdev_priv(netdev);
1859 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1860 int status;
1861
1862 if (!sriov_enabled(adapter))
1863 return -EPERM;
1864
1865 if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1866 return -EINVAL;
1867
1868 /* Proceed further only if user provided MAC is different
1869 * from active MAC
1870 */
1871 if (ether_addr_equal(mac, vf_cfg->mac_addr))
1872 return 0;
1873
1874 if (BEx_chip(adapter)) {
1875 be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1876 vf + 1);
1877
1878 status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1879 &vf_cfg->pmac_id, vf + 1);
1880 } else {
1881 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1882 vf + 1);
1883 }
1884
1885 if (status) {
1886 dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",
1887 mac, vf, status);
1888 return be_cmd_status(status);
1889 }
1890
1891 ether_addr_copy(vf_cfg->mac_addr, mac);
1892
1893 return 0;
1894 }
1895
be_get_vf_config(struct net_device * netdev,int vf,struct ifla_vf_info * vi)1896 static int be_get_vf_config(struct net_device *netdev, int vf,
1897 struct ifla_vf_info *vi)
1898 {
1899 struct be_adapter *adapter = netdev_priv(netdev);
1900 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1901
1902 if (!sriov_enabled(adapter))
1903 return -EPERM;
1904
1905 if (vf >= adapter->num_vfs)
1906 return -EINVAL;
1907
1908 vi->vf = vf;
1909 vi->max_tx_rate = vf_cfg->tx_rate;
1910 vi->min_tx_rate = 0;
1911 vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1912 vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1913 memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1914 vi->linkstate = adapter->vf_cfg[vf].plink_tracking;
1915 vi->spoofchk = adapter->vf_cfg[vf].spoofchk;
1916
1917 return 0;
1918 }
1919
be_set_vf_tvt(struct be_adapter * adapter,int vf,u16 vlan)1920 static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)
1921 {
1922 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1923 u16 vids[BE_NUM_VLANS_SUPPORTED];
1924 int vf_if_id = vf_cfg->if_handle;
1925 int status;
1926
1927 /* Enable Transparent VLAN Tagging */
1928 status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);
1929 if (status)
1930 return status;
1931
1932 /* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */
1933 vids[0] = 0;
1934 status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);
1935 if (!status)
1936 dev_info(&adapter->pdev->dev,
1937 "Cleared guest VLANs on VF%d", vf);
1938
1939 /* After TVT is enabled, disallow VFs to program VLAN filters */
1940 if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {
1941 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &
1942 ~BE_PRIV_FILTMGMT, vf + 1);
1943 if (!status)
1944 vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;
1945 }
1946 return 0;
1947 }
1948
be_clear_vf_tvt(struct be_adapter * adapter,int vf)1949 static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)
1950 {
1951 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1952 struct device *dev = &adapter->pdev->dev;
1953 int status;
1954
1955 /* Reset Transparent VLAN Tagging. */
1956 status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,
1957 vf_cfg->if_handle, 0, 0);
1958 if (status)
1959 return status;
1960
1961 /* Allow VFs to program VLAN filtering */
1962 if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
1963 status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |
1964 BE_PRIV_FILTMGMT, vf + 1);
1965 if (!status) {
1966 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
1967 dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);
1968 }
1969 }
1970
1971 dev_info(dev,
1972 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");
1973 return 0;
1974 }
1975
be_set_vf_vlan(struct net_device * netdev,int vf,u16 vlan,u8 qos,__be16 vlan_proto)1976 static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
1977 __be16 vlan_proto)
1978 {
1979 struct be_adapter *adapter = netdev_priv(netdev);
1980 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1981 int status;
1982
1983 if (!sriov_enabled(adapter))
1984 return -EPERM;
1985
1986 if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1987 return -EINVAL;
1988
1989 if (vlan_proto != htons(ETH_P_8021Q))
1990 return -EPROTONOSUPPORT;
1991
1992 if (vlan || qos) {
1993 vlan |= qos << VLAN_PRIO_SHIFT;
1994 status = be_set_vf_tvt(adapter, vf, vlan);
1995 } else {
1996 status = be_clear_vf_tvt(adapter, vf);
1997 }
1998
1999 if (status) {
2000 dev_err(&adapter->pdev->dev,
2001 "VLAN %d config on VF %d failed : %#x\n", vlan, vf,
2002 status);
2003 return be_cmd_status(status);
2004 }
2005
2006 vf_cfg->vlan_tag = vlan;
2007 return 0;
2008 }
2009
be_set_vf_tx_rate(struct net_device * netdev,int vf,int min_tx_rate,int max_tx_rate)2010 static int be_set_vf_tx_rate(struct net_device *netdev, int vf,
2011 int min_tx_rate, int max_tx_rate)
2012 {
2013 struct be_adapter *adapter = netdev_priv(netdev);
2014 struct device *dev = &adapter->pdev->dev;
2015 int percent_rate, status = 0;
2016 u16 link_speed = 0;
2017 u8 link_status;
2018
2019 if (!sriov_enabled(adapter))
2020 return -EPERM;
2021
2022 if (vf >= adapter->num_vfs)
2023 return -EINVAL;
2024
2025 if (min_tx_rate)
2026 return -EINVAL;
2027
2028 if (!max_tx_rate)
2029 goto config_qos;
2030
2031 status = be_cmd_link_status_query(adapter, &link_speed,
2032 &link_status, 0);
2033 if (status)
2034 goto err;
2035
2036 if (!link_status) {
2037 dev_err(dev, "TX-rate setting not allowed when link is down\n");
2038 status = -ENETDOWN;
2039 goto err;
2040 }
2041
2042 if (max_tx_rate < 100 || max_tx_rate > link_speed) {
2043 dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",
2044 link_speed);
2045 status = -EINVAL;
2046 goto err;
2047 }
2048
2049 /* On Skyhawk the QOS setting must be done only as a % value */
2050 percent_rate = link_speed / 100;
2051 if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {
2052 dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",
2053 percent_rate);
2054 status = -EINVAL;
2055 goto err;
2056 }
2057
2058 config_qos:
2059 status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);
2060 if (status)
2061 goto err;
2062
2063 adapter->vf_cfg[vf].tx_rate = max_tx_rate;
2064 return 0;
2065
2066 err:
2067 dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",
2068 max_tx_rate, vf);
2069 return be_cmd_status(status);
2070 }
2071
be_set_vf_link_state(struct net_device * netdev,int vf,int link_state)2072 static int be_set_vf_link_state(struct net_device *netdev, int vf,
2073 int link_state)
2074 {
2075 struct be_adapter *adapter = netdev_priv(netdev);
2076 int status;
2077
2078 if (!sriov_enabled(adapter))
2079 return -EPERM;
2080
2081 if (vf >= adapter->num_vfs)
2082 return -EINVAL;
2083
2084 status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);
2085 if (status) {
2086 dev_err(&adapter->pdev->dev,
2087 "Link state change on VF %d failed: %#x\n", vf, status);
2088 return be_cmd_status(status);
2089 }
2090
2091 adapter->vf_cfg[vf].plink_tracking = link_state;
2092
2093 return 0;
2094 }
2095
be_set_vf_spoofchk(struct net_device * netdev,int vf,bool enable)2096 static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
2097 {
2098 struct be_adapter *adapter = netdev_priv(netdev);
2099 struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
2100 u8 spoofchk;
2101 int status;
2102
2103 if (!sriov_enabled(adapter))
2104 return -EPERM;
2105
2106 if (vf >= adapter->num_vfs)
2107 return -EINVAL;
2108
2109 if (BEx_chip(adapter))
2110 return -EOPNOTSUPP;
2111
2112 if (enable == vf_cfg->spoofchk)
2113 return 0;
2114
2115 spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;
2116
2117 status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,
2118 0, spoofchk);
2119 if (status) {
2120 dev_err(&adapter->pdev->dev,
2121 "Spoofchk change on VF %d failed: %#x\n", vf, status);
2122 return be_cmd_status(status);
2123 }
2124
2125 vf_cfg->spoofchk = enable;
2126 return 0;
2127 }
2128
be_aic_update(struct be_aic_obj * aic,u64 rx_pkts,u64 tx_pkts,ulong now)2129 static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
2130 ulong now)
2131 {
2132 aic->rx_pkts_prev = rx_pkts;
2133 aic->tx_reqs_prev = tx_pkts;
2134 aic->jiffies = now;
2135 }
2136
be_get_new_eqd(struct be_eq_obj * eqo)2137 static int be_get_new_eqd(struct be_eq_obj *eqo)
2138 {
2139 struct be_adapter *adapter = eqo->adapter;
2140 int eqd, start;
2141 struct be_aic_obj *aic;
2142 struct be_rx_obj *rxo;
2143 struct be_tx_obj *txo;
2144 u64 rx_pkts = 0, tx_pkts = 0, pkts;
2145 ulong now;
2146 u32 pps, delta;
2147 int i;
2148
2149 aic = &adapter->aic_obj[eqo->idx];
2150 if (!adapter->aic_enabled) {
2151 if (aic->jiffies)
2152 aic->jiffies = 0;
2153 eqd = aic->et_eqd;
2154 return eqd;
2155 }
2156
2157 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
2158 do {
2159 start = u64_stats_fetch_begin(&rxo->stats.sync);
2160 pkts = rxo->stats.rx_pkts;
2161 } while (u64_stats_fetch_retry(&rxo->stats.sync, start));
2162 rx_pkts += pkts;
2163 }
2164
2165 for_all_tx_queues_on_eq(adapter, eqo, txo, i) {
2166 do {
2167 start = u64_stats_fetch_begin(&txo->stats.sync);
2168 pkts = txo->stats.tx_reqs;
2169 } while (u64_stats_fetch_retry(&txo->stats.sync, start));
2170 tx_pkts += pkts;
2171 }
2172
2173 /* Skip, if wrapped around or first calculation */
2174 now = jiffies;
2175 if (!aic->jiffies || time_before(now, aic->jiffies) ||
2176 rx_pkts < aic->rx_pkts_prev ||
2177 tx_pkts < aic->tx_reqs_prev) {
2178 be_aic_update(aic, rx_pkts, tx_pkts, now);
2179 return aic->prev_eqd;
2180 }
2181
2182 delta = jiffies_to_msecs(now - aic->jiffies);
2183 if (delta == 0)
2184 return aic->prev_eqd;
2185
2186 pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
2187 (((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
2188 eqd = (pps / 15000) << 2;
2189
2190 if (eqd < 8)
2191 eqd = 0;
2192 eqd = min_t(u32, eqd, aic->max_eqd);
2193 eqd = max_t(u32, eqd, aic->min_eqd);
2194
2195 be_aic_update(aic, rx_pkts, tx_pkts, now);
2196
2197 return eqd;
2198 }
2199
2200 /* For Skyhawk-R only */
be_get_eq_delay_mult_enc(struct be_eq_obj * eqo)2201 static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)
2202 {
2203 struct be_adapter *adapter = eqo->adapter;
2204 struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];
2205 ulong now = jiffies;
2206 int eqd;
2207 u32 mult_enc;
2208
2209 if (!adapter->aic_enabled)
2210 return 0;
2211
2212 if (jiffies_to_msecs(now - aic->jiffies) < 1)
2213 eqd = aic->prev_eqd;
2214 else
2215 eqd = be_get_new_eqd(eqo);
2216
2217 if (eqd > 100)
2218 mult_enc = R2I_DLY_ENC_1;
2219 else if (eqd > 60)
2220 mult_enc = R2I_DLY_ENC_2;
2221 else if (eqd > 20)
2222 mult_enc = R2I_DLY_ENC_3;
2223 else
2224 mult_enc = R2I_DLY_ENC_0;
2225
2226 aic->prev_eqd = eqd;
2227
2228 return mult_enc;
2229 }
2230
be_eqd_update(struct be_adapter * adapter,bool force_update)2231 void be_eqd_update(struct be_adapter *adapter, bool force_update)
2232 {
2233 struct be_set_eqd set_eqd[MAX_EVT_QS];
2234 struct be_aic_obj *aic;
2235 struct be_eq_obj *eqo;
2236 int i, num = 0, eqd;
2237
2238 for_all_evt_queues(adapter, eqo, i) {
2239 aic = &adapter->aic_obj[eqo->idx];
2240 eqd = be_get_new_eqd(eqo);
2241 if (force_update || eqd != aic->prev_eqd) {
2242 set_eqd[num].delay_multiplier = (eqd * 65)/100;
2243 set_eqd[num].eq_id = eqo->q.id;
2244 aic->prev_eqd = eqd;
2245 num++;
2246 }
2247 }
2248
2249 if (num)
2250 be_cmd_modify_eqd(adapter, set_eqd, num);
2251 }
2252
be_rx_stats_update(struct be_rx_obj * rxo,struct be_rx_compl_info * rxcp)2253 static void be_rx_stats_update(struct be_rx_obj *rxo,
2254 struct be_rx_compl_info *rxcp)
2255 {
2256 struct be_rx_stats *stats = rx_stats(rxo);
2257
2258 u64_stats_update_begin(&stats->sync);
2259 stats->rx_compl++;
2260 stats->rx_bytes += rxcp->pkt_size;
2261 stats->rx_pkts++;
2262 if (rxcp->tunneled)
2263 stats->rx_vxlan_offload_pkts++;
2264 if (rxcp->pkt_type == BE_MULTICAST_PACKET)
2265 stats->rx_mcast_pkts++;
2266 if (rxcp->err)
2267 stats->rx_compl_err++;
2268 u64_stats_update_end(&stats->sync);
2269 }
2270
csum_passed(struct be_rx_compl_info * rxcp)2271 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
2272 {
2273 /* L4 checksum is not reliable for non TCP/UDP packets.
2274 * Also ignore ipcksm for ipv6 pkts
2275 */
2276 return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
2277 (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
2278 }
2279
get_rx_page_info(struct be_rx_obj * rxo)2280 static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
2281 {
2282 struct be_adapter *adapter = rxo->adapter;
2283 struct be_rx_page_info *rx_page_info;
2284 struct be_queue_info *rxq = &rxo->q;
2285 u32 frag_idx = rxq->tail;
2286
2287 rx_page_info = &rxo->page_info_tbl[frag_idx];
2288 BUG_ON(!rx_page_info->page);
2289
2290 if (rx_page_info->last_frag) {
2291 dma_unmap_page(&adapter->pdev->dev,
2292 dma_unmap_addr(rx_page_info, bus),
2293 adapter->big_page_size, DMA_FROM_DEVICE);
2294 rx_page_info->last_frag = false;
2295 } else {
2296 dma_sync_single_for_cpu(&adapter->pdev->dev,
2297 dma_unmap_addr(rx_page_info, bus),
2298 rx_frag_size, DMA_FROM_DEVICE);
2299 }
2300
2301 queue_tail_inc(rxq);
2302 atomic_dec(&rxq->used);
2303 return rx_page_info;
2304 }
2305
2306 /* Throwaway the data in the Rx completion */
be_rx_compl_discard(struct be_rx_obj * rxo,struct be_rx_compl_info * rxcp)2307 static void be_rx_compl_discard(struct be_rx_obj *rxo,
2308 struct be_rx_compl_info *rxcp)
2309 {
2310 struct be_rx_page_info *page_info;
2311 u16 i, num_rcvd = rxcp->num_rcvd;
2312
2313 for (i = 0; i < num_rcvd; i++) {
2314 page_info = get_rx_page_info(rxo);
2315 put_page(page_info->page);
2316 memset(page_info, 0, sizeof(*page_info));
2317 }
2318 }
2319
2320 /*
2321 * skb_fill_rx_data forms a complete skb for an ether frame
2322 * indicated by rxcp.
2323 */
skb_fill_rx_data(struct be_rx_obj * rxo,struct sk_buff * skb,struct be_rx_compl_info * rxcp)2324 static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
2325 struct be_rx_compl_info *rxcp)
2326 {
2327 struct be_rx_page_info *page_info;
2328 u16 i, j;
2329 u16 hdr_len, curr_frag_len, remaining;
2330 u8 *start;
2331
2332 page_info = get_rx_page_info(rxo);
2333 start = page_address(page_info->page) + page_info->page_offset;
2334 prefetch(start);
2335
2336 /* Copy data in the first descriptor of this completion */
2337 curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
2338
2339 skb->len = curr_frag_len;
2340 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
2341 memcpy(skb->data, start, curr_frag_len);
2342 /* Complete packet has now been moved to data */
2343 put_page(page_info->page);
2344 skb->data_len = 0;
2345 skb->tail += curr_frag_len;
2346 } else {
2347 hdr_len = ETH_HLEN;
2348 memcpy(skb->data, start, hdr_len);
2349 skb_shinfo(skb)->nr_frags = 1;
2350 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[0],
2351 page_info->page,
2352 page_info->page_offset + hdr_len,
2353 curr_frag_len - hdr_len);
2354 skb->data_len = curr_frag_len - hdr_len;
2355 skb->truesize += rx_frag_size;
2356 skb->tail += hdr_len;
2357 }
2358 page_info->page = NULL;
2359
2360 if (rxcp->pkt_size <= rx_frag_size) {
2361 BUG_ON(rxcp->num_rcvd != 1);
2362 return;
2363 }
2364
2365 /* More frags present for this completion */
2366 remaining = rxcp->pkt_size - curr_frag_len;
2367 for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
2368 page_info = get_rx_page_info(rxo);
2369 curr_frag_len = min(remaining, rx_frag_size);
2370
2371 /* Coalesce all frags from the same physical page in one slot */
2372 if (page_info->page_offset == 0) {
2373 /* Fresh page */
2374 j++;
2375 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[j],
2376 page_info->page,
2377 page_info->page_offset,
2378 curr_frag_len);
2379 skb_shinfo(skb)->nr_frags++;
2380 } else {
2381 put_page(page_info->page);
2382 skb_frag_size_add(&skb_shinfo(skb)->frags[j],
2383 curr_frag_len);
2384 }
2385
2386 skb->len += curr_frag_len;
2387 skb->data_len += curr_frag_len;
2388 skb->truesize += rx_frag_size;
2389 remaining -= curr_frag_len;
2390 page_info->page = NULL;
2391 }
2392 BUG_ON(j > MAX_SKB_FRAGS);
2393 }
2394
2395 /* 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)2396 static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
2397 struct be_rx_compl_info *rxcp)
2398 {
2399 struct be_adapter *adapter = rxo->adapter;
2400 struct net_device *netdev = adapter->netdev;
2401 struct sk_buff *skb;
2402
2403 skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
2404 if (unlikely(!skb)) {
2405 rx_stats(rxo)->rx_drops_no_skbs++;
2406 be_rx_compl_discard(rxo, rxcp);
2407 return;
2408 }
2409
2410 skb_fill_rx_data(rxo, skb, rxcp);
2411
2412 if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
2413 skb->ip_summed = CHECKSUM_UNNECESSARY;
2414 else
2415 skb_checksum_none_assert(skb);
2416
2417 skb->protocol = eth_type_trans(skb, netdev);
2418 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2419 if (netdev->features & NETIF_F_RXHASH)
2420 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2421
2422 skb->csum_level = rxcp->tunneled;
2423 skb_mark_napi_id(skb, napi);
2424
2425 if (rxcp->vlanf)
2426 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2427
2428 netif_receive_skb(skb);
2429 }
2430
2431 /* 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)2432 static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
2433 struct napi_struct *napi,
2434 struct be_rx_compl_info *rxcp)
2435 {
2436 struct be_adapter *adapter = rxo->adapter;
2437 struct be_rx_page_info *page_info;
2438 struct sk_buff *skb = NULL;
2439 u16 remaining, curr_frag_len;
2440 u16 i, j;
2441
2442 skb = napi_get_frags(napi);
2443 if (!skb) {
2444 be_rx_compl_discard(rxo, rxcp);
2445 return;
2446 }
2447
2448 remaining = rxcp->pkt_size;
2449 for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
2450 page_info = get_rx_page_info(rxo);
2451
2452 curr_frag_len = min(remaining, rx_frag_size);
2453
2454 /* Coalesce all frags from the same physical page in one slot */
2455 if (i == 0 || page_info->page_offset == 0) {
2456 /* First frag or Fresh page */
2457 j++;
2458 skb_frag_fill_page_desc(&skb_shinfo(skb)->frags[j],
2459 page_info->page,
2460 page_info->page_offset,
2461 curr_frag_len);
2462 } else {
2463 put_page(page_info->page);
2464 skb_frag_size_add(&skb_shinfo(skb)->frags[j],
2465 curr_frag_len);
2466 }
2467
2468 skb->truesize += rx_frag_size;
2469 remaining -= curr_frag_len;
2470 memset(page_info, 0, sizeof(*page_info));
2471 }
2472 BUG_ON(j > MAX_SKB_FRAGS);
2473
2474 skb_shinfo(skb)->nr_frags = j + 1;
2475 skb->len = rxcp->pkt_size;
2476 skb->data_len = rxcp->pkt_size;
2477 skb->ip_summed = CHECKSUM_UNNECESSARY;
2478 skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2479 if (adapter->netdev->features & NETIF_F_RXHASH)
2480 skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2481
2482 skb->csum_level = rxcp->tunneled;
2483
2484 if (rxcp->vlanf)
2485 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2486
2487 napi_gro_frags(napi);
2488 }
2489
be_parse_rx_compl_v1(struct be_eth_rx_compl * compl,struct be_rx_compl_info * rxcp)2490 static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
2491 struct be_rx_compl_info *rxcp)
2492 {
2493 rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);
2494 rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);
2495 rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);
2496 rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);
2497 rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);
2498 rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);
2499 rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);
2500 rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);
2501 rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);
2502 rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);
2503 rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);
2504 if (rxcp->vlanf) {
2505 rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);
2506 rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);
2507 }
2508 rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);
2509 rxcp->tunneled =
2510 GET_RX_COMPL_V1_BITS(tunneled, compl);
2511 }
2512
be_parse_rx_compl_v0(struct be_eth_rx_compl * compl,struct be_rx_compl_info * rxcp)2513 static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
2514 struct be_rx_compl_info *rxcp)
2515 {
2516 rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);
2517 rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);
2518 rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);
2519 rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);
2520 rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);
2521 rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);
2522 rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);
2523 rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);
2524 rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);
2525 rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);
2526 rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);
2527 if (rxcp->vlanf) {
2528 rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);
2529 rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);
2530 }
2531 rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);
2532 rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);
2533 }
2534
be_rx_compl_get(struct be_rx_obj * rxo)2535 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
2536 {
2537 struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
2538 struct be_rx_compl_info *rxcp = &rxo->rxcp;
2539 struct be_adapter *adapter = rxo->adapter;
2540
2541 /* For checking the valid bit it is Ok to use either definition as the
2542 * valid bit is at the same position in both v0 and v1 Rx compl */
2543 if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
2544 return NULL;
2545
2546 rmb();
2547 be_dws_le_to_cpu(compl, sizeof(*compl));
2548
2549 if (adapter->be3_native)
2550 be_parse_rx_compl_v1(compl, rxcp);
2551 else
2552 be_parse_rx_compl_v0(compl, rxcp);
2553
2554 if (rxcp->ip_frag)
2555 rxcp->l4_csum = 0;
2556
2557 if (rxcp->vlanf) {
2558 /* In QNQ modes, if qnq bit is not set, then the packet was
2559 * tagged only with the transparent outer vlan-tag and must
2560 * not be treated as a vlan packet by host
2561 */
2562 if (be_is_qnq_mode(adapter) && !rxcp->qnq)
2563 rxcp->vlanf = 0;
2564
2565 if (!lancer_chip(adapter))
2566 rxcp->vlan_tag = swab16(rxcp->vlan_tag);
2567
2568 if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
2569 !test_bit(rxcp->vlan_tag, adapter->vids))
2570 rxcp->vlanf = 0;
2571 }
2572
2573 /* As the compl has been parsed, reset it; we won't touch it again */
2574 compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
2575
2576 queue_tail_inc(&rxo->cq);
2577 return rxcp;
2578 }
2579
be_alloc_pages(u32 size,gfp_t gfp)2580 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
2581 {
2582 u32 order = get_order(size);
2583
2584 if (order > 0)
2585 gfp |= __GFP_COMP;
2586 return alloc_pages(gfp, order);
2587 }
2588
2589 /*
2590 * Allocate a page, split it to fragments of size rx_frag_size and post as
2591 * receive buffers to BE
2592 */
be_post_rx_frags(struct be_rx_obj * rxo,gfp_t gfp,u32 frags_needed)2593 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
2594 {
2595 struct be_adapter *adapter = rxo->adapter;
2596 struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
2597 struct be_queue_info *rxq = &rxo->q;
2598 struct page *pagep = NULL;
2599 struct device *dev = &adapter->pdev->dev;
2600 struct be_eth_rx_d *rxd;
2601 u64 page_dmaaddr = 0, frag_dmaaddr;
2602 u32 posted, page_offset = 0, notify = 0;
2603
2604 page_info = &rxo->page_info_tbl[rxq->head];
2605 for (posted = 0; posted < frags_needed && !page_info->page; posted++) {
2606 if (!pagep) {
2607 pagep = be_alloc_pages(adapter->big_page_size, gfp);
2608 if (unlikely(!pagep)) {
2609 rx_stats(rxo)->rx_post_fail++;
2610 break;
2611 }
2612 page_dmaaddr = dma_map_page(dev, pagep, 0,
2613 adapter->big_page_size,
2614 DMA_FROM_DEVICE);
2615 if (dma_mapping_error(dev, page_dmaaddr)) {
2616 put_page(pagep);
2617 pagep = NULL;
2618 adapter->drv_stats.dma_map_errors++;
2619 break;
2620 }
2621 page_offset = 0;
2622 } else {
2623 get_page(pagep);
2624 page_offset += rx_frag_size;
2625 }
2626 page_info->page_offset = page_offset;
2627 page_info->page = pagep;
2628
2629 rxd = queue_head_node(rxq);
2630 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
2631 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
2632 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
2633
2634 /* Any space left in the current big page for another frag? */
2635 if ((page_offset + rx_frag_size + rx_frag_size) >
2636 adapter->big_page_size) {
2637 pagep = NULL;
2638 page_info->last_frag = true;
2639 dma_unmap_addr_set(page_info, bus, page_dmaaddr);
2640 } else {
2641 dma_unmap_addr_set(page_info, bus, frag_dmaaddr);
2642 }
2643
2644 prev_page_info = page_info;
2645 queue_head_inc(rxq);
2646 page_info = &rxo->page_info_tbl[rxq->head];
2647 }
2648
2649 /* Mark the last frag of a page when we break out of the above loop
2650 * with no more slots available in the RXQ
2651 */
2652 if (pagep) {
2653 prev_page_info->last_frag = true;
2654 dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);
2655 }
2656
2657 if (posted) {
2658 atomic_add(posted, &rxq->used);
2659 if (rxo->rx_post_starved)
2660 rxo->rx_post_starved = false;
2661 do {
2662 notify = min(MAX_NUM_POST_ERX_DB, posted);
2663 be_rxq_notify(adapter, rxq->id, notify);
2664 posted -= notify;
2665 } while (posted);
2666 } else if (atomic_read(&rxq->used) == 0) {
2667 /* Let be_worker replenish when memory is available */
2668 rxo->rx_post_starved = true;
2669 }
2670 }
2671
be_update_tx_err(struct be_tx_obj * txo,u8 status)2672 static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)
2673 {
2674 switch (status) {
2675 case BE_TX_COMP_HDR_PARSE_ERR:
2676 tx_stats(txo)->tx_hdr_parse_err++;
2677 break;
2678 case BE_TX_COMP_NDMA_ERR:
2679 tx_stats(txo)->tx_dma_err++;
2680 break;
2681 case BE_TX_COMP_ACL_ERR:
2682 tx_stats(txo)->tx_spoof_check_err++;
2683 break;
2684 }
2685 }
2686
lancer_update_tx_err(struct be_tx_obj * txo,u8 status)2687 static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)
2688 {
2689 switch (status) {
2690 case LANCER_TX_COMP_LSO_ERR:
2691 tx_stats(txo)->tx_tso_err++;
2692 break;
2693 case LANCER_TX_COMP_HSW_DROP_MAC_ERR:
2694 case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:
2695 tx_stats(txo)->tx_spoof_check_err++;
2696 break;
2697 case LANCER_TX_COMP_QINQ_ERR:
2698 tx_stats(txo)->tx_qinq_err++;
2699 break;
2700 case LANCER_TX_COMP_PARITY_ERR:
2701 tx_stats(txo)->tx_internal_parity_err++;
2702 break;
2703 case LANCER_TX_COMP_DMA_ERR:
2704 tx_stats(txo)->tx_dma_err++;
2705 break;
2706 case LANCER_TX_COMP_SGE_ERR:
2707 tx_stats(txo)->tx_sge_err++;
2708 break;
2709 }
2710 }
2711
be_tx_compl_get(struct be_adapter * adapter,struct be_tx_obj * txo)2712 static struct be_tx_compl_info *be_tx_compl_get(struct be_adapter *adapter,
2713 struct be_tx_obj *txo)
2714 {
2715 struct be_queue_info *tx_cq = &txo->cq;
2716 struct be_tx_compl_info *txcp = &txo->txcp;
2717 struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);
2718
2719 if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
2720 return NULL;
2721
2722 /* Ensure load ordering of valid bit dword and other dwords below */
2723 rmb();
2724 be_dws_le_to_cpu(compl, sizeof(*compl));
2725
2726 txcp->status = GET_TX_COMPL_BITS(status, compl);
2727 txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);
2728
2729 if (txcp->status) {
2730 if (lancer_chip(adapter)) {
2731 lancer_update_tx_err(txo, txcp->status);
2732 /* Reset the adapter in case of TSO,
2733 * SGE or Parity error
2734 */
2735 if (txcp->status == LANCER_TX_COMP_LSO_ERR ||
2736 txcp->status == LANCER_TX_COMP_PARITY_ERR ||
2737 txcp->status == LANCER_TX_COMP_SGE_ERR)
2738 be_set_error(adapter, BE_ERROR_TX);
2739 } else {
2740 be_update_tx_err(txo, txcp->status);
2741 }
2742 }
2743
2744 if (be_check_error(adapter, BE_ERROR_TX))
2745 return NULL;
2746
2747 compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
2748 queue_tail_inc(tx_cq);
2749 return txcp;
2750 }
2751
be_tx_compl_process(struct be_adapter * adapter,struct be_tx_obj * txo,u16 last_index)2752 static u16 be_tx_compl_process(struct be_adapter *adapter,
2753 struct be_tx_obj *txo, u16 last_index)
2754 {
2755 struct sk_buff **sent_skbs = txo->sent_skb_list;
2756 struct be_queue_info *txq = &txo->q;
2757 struct sk_buff *skb = NULL;
2758 bool unmap_skb_hdr = false;
2759 struct be_eth_wrb *wrb;
2760 u16 num_wrbs = 0;
2761 u32 frag_index;
2762
2763 do {
2764 if (sent_skbs[txq->tail]) {
2765 /* Free skb from prev req */
2766 if (skb)
2767 dev_consume_skb_any(skb);
2768 skb = sent_skbs[txq->tail];
2769 sent_skbs[txq->tail] = NULL;
2770 queue_tail_inc(txq); /* skip hdr wrb */
2771 num_wrbs++;
2772 unmap_skb_hdr = true;
2773 }
2774 wrb = queue_tail_node(txq);
2775 frag_index = txq->tail;
2776 unmap_tx_frag(&adapter->pdev->dev, wrb,
2777 (unmap_skb_hdr && skb_headlen(skb)));
2778 unmap_skb_hdr = false;
2779 queue_tail_inc(txq);
2780 num_wrbs++;
2781 } while (frag_index != last_index);
2782 dev_consume_skb_any(skb);
2783
2784 return num_wrbs;
2785 }
2786
2787 /* Return the number of events in the event queue */
events_get(struct be_eq_obj * eqo)2788 static inline int events_get(struct be_eq_obj *eqo)
2789 {
2790 struct be_eq_entry *eqe;
2791 int num = 0;
2792
2793 do {
2794 eqe = queue_tail_node(&eqo->q);
2795 if (eqe->evt == 0)
2796 break;
2797
2798 rmb();
2799 eqe->evt = 0;
2800 num++;
2801 queue_tail_inc(&eqo->q);
2802 } while (true);
2803
2804 return num;
2805 }
2806
2807 /* Leaves the EQ is disarmed state */
be_eq_clean(struct be_eq_obj * eqo)2808 static void be_eq_clean(struct be_eq_obj *eqo)
2809 {
2810 int num = events_get(eqo);
2811
2812 be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
2813 }
2814
2815 /* Free posted rx buffers that were not used */
be_rxq_clean(struct be_rx_obj * rxo)2816 static void be_rxq_clean(struct be_rx_obj *rxo)
2817 {
2818 struct be_queue_info *rxq = &rxo->q;
2819 struct be_rx_page_info *page_info;
2820
2821 while (atomic_read(&rxq->used) > 0) {
2822 page_info = get_rx_page_info(rxo);
2823 put_page(page_info->page);
2824 memset(page_info, 0, sizeof(*page_info));
2825 }
2826 BUG_ON(atomic_read(&rxq->used));
2827 rxq->tail = 0;
2828 rxq->head = 0;
2829 }
2830
be_rx_cq_clean(struct be_rx_obj * rxo)2831 static void be_rx_cq_clean(struct be_rx_obj *rxo)
2832 {
2833 struct be_queue_info *rx_cq = &rxo->cq;
2834 struct be_rx_compl_info *rxcp;
2835 struct be_adapter *adapter = rxo->adapter;
2836 int flush_wait = 0;
2837
2838 /* Consume pending rx completions.
2839 * Wait for the flush completion (identified by zero num_rcvd)
2840 * to arrive. Notify CQ even when there are no more CQ entries
2841 * for HW to flush partially coalesced CQ entries.
2842 * In Lancer, there is no need to wait for flush compl.
2843 */
2844 for (;;) {
2845 rxcp = be_rx_compl_get(rxo);
2846 if (!rxcp) {
2847 if (lancer_chip(adapter))
2848 break;
2849
2850 if (flush_wait++ > 50 ||
2851 be_check_error(adapter,
2852 BE_ERROR_HW)) {
2853 dev_warn(&adapter->pdev->dev,
2854 "did not receive flush compl\n");
2855 break;
2856 }
2857 be_cq_notify(adapter, rx_cq->id, true, 0);
2858 mdelay(1);
2859 } else {
2860 be_rx_compl_discard(rxo, rxcp);
2861 be_cq_notify(adapter, rx_cq->id, false, 1);
2862 if (rxcp->num_rcvd == 0)
2863 break;
2864 }
2865 }
2866
2867 /* After cleanup, leave the CQ in unarmed state */
2868 be_cq_notify(adapter, rx_cq->id, false, 0);
2869 }
2870
be_tx_compl_clean(struct be_adapter * adapter)2871 static void be_tx_compl_clean(struct be_adapter *adapter)
2872 {
2873 struct device *dev = &adapter->pdev->dev;
2874 u16 cmpl = 0, timeo = 0, num_wrbs = 0;
2875 struct be_tx_compl_info *txcp;
2876 struct be_queue_info *txq;
2877 u32 end_idx, notified_idx;
2878 struct be_tx_obj *txo;
2879 int i, pending_txqs;
2880
2881 /* Stop polling for compls when HW has been silent for 10ms */
2882 do {
2883 pending_txqs = adapter->num_tx_qs;
2884
2885 for_all_tx_queues(adapter, txo, i) {
2886 cmpl = 0;
2887 num_wrbs = 0;
2888 txq = &txo->q;
2889 while ((txcp = be_tx_compl_get(adapter, txo))) {
2890 num_wrbs +=
2891 be_tx_compl_process(adapter, txo,
2892 txcp->end_index);
2893 cmpl++;
2894 }
2895 if (cmpl) {
2896 be_cq_notify(adapter, txo->cq.id, false, cmpl);
2897 atomic_sub(num_wrbs, &txq->used);
2898 timeo = 0;
2899 }
2900 if (!be_is_tx_compl_pending(txo))
2901 pending_txqs--;
2902 }
2903
2904 if (pending_txqs == 0 || ++timeo > 10 ||
2905 be_check_error(adapter, BE_ERROR_HW))
2906 break;
2907
2908 mdelay(1);
2909 } while (true);
2910
2911 /* Free enqueued TX that was never notified to HW */
2912 for_all_tx_queues(adapter, txo, i) {
2913 txq = &txo->q;
2914
2915 if (atomic_read(&txq->used)) {
2916 dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",
2917 i, atomic_read(&txq->used));
2918 notified_idx = txq->tail;
2919 end_idx = txq->tail;
2920 index_adv(&end_idx, atomic_read(&txq->used) - 1,
2921 txq->len);
2922 /* Use the tx-compl process logic to handle requests
2923 * that were not sent to the HW.
2924 */
2925 num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2926 atomic_sub(num_wrbs, &txq->used);
2927 BUG_ON(atomic_read(&txq->used));
2928 txo->pend_wrb_cnt = 0;
2929 /* Since hw was never notified of these requests,
2930 * reset TXQ indices
2931 */
2932 txq->head = notified_idx;
2933 txq->tail = notified_idx;
2934 }
2935 }
2936 }
2937
be_evt_queues_destroy(struct be_adapter * adapter)2938 static void be_evt_queues_destroy(struct be_adapter *adapter)
2939 {
2940 struct be_eq_obj *eqo;
2941 int i;
2942
2943 for_all_evt_queues(adapter, eqo, i) {
2944 if (eqo->q.created) {
2945 be_eq_clean(eqo);
2946 be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2947 netif_napi_del(&eqo->napi);
2948 free_cpumask_var(eqo->affinity_mask);
2949 }
2950 be_queue_free(adapter, &eqo->q);
2951 }
2952 }
2953
be_evt_queues_create(struct be_adapter * adapter)2954 static int be_evt_queues_create(struct be_adapter *adapter)
2955 {
2956 struct be_queue_info *eq;
2957 struct be_eq_obj *eqo;
2958 struct be_aic_obj *aic;
2959 int i, rc;
2960
2961 /* need enough EQs to service both RX and TX queues */
2962 adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2963 max(adapter->cfg_num_rx_irqs,
2964 adapter->cfg_num_tx_irqs));
2965
2966 adapter->aic_enabled = true;
2967
2968 for_all_evt_queues(adapter, eqo, i) {
2969 int numa_node = dev_to_node(&adapter->pdev->dev);
2970
2971 aic = &adapter->aic_obj[i];
2972 eqo->adapter = adapter;
2973 eqo->idx = i;
2974 aic->max_eqd = BE_MAX_EQD;
2975
2976 eq = &eqo->q;
2977 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2978 sizeof(struct be_eq_entry));
2979 if (rc)
2980 return rc;
2981
2982 rc = be_cmd_eq_create(adapter, eqo);
2983 if (rc)
2984 return rc;
2985
2986 if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
2987 return -ENOMEM;
2988 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
2989 eqo->affinity_mask);
2990 netif_napi_add(adapter->netdev, &eqo->napi, be_poll);
2991 }
2992 return 0;
2993 }
2994
be_mcc_queues_destroy(struct be_adapter * adapter)2995 static void be_mcc_queues_destroy(struct be_adapter *adapter)
2996 {
2997 struct be_queue_info *q;
2998
2999 q = &adapter->mcc_obj.q;
3000 if (q->created)
3001 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
3002 be_queue_free(adapter, q);
3003
3004 q = &adapter->mcc_obj.cq;
3005 if (q->created)
3006 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3007 be_queue_free(adapter, q);
3008 }
3009
3010 /* Must be called only after TX qs are created as MCC shares TX EQ */
be_mcc_queues_create(struct be_adapter * adapter)3011 static int be_mcc_queues_create(struct be_adapter *adapter)
3012 {
3013 struct be_queue_info *q, *cq;
3014
3015 cq = &adapter->mcc_obj.cq;
3016 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
3017 sizeof(struct be_mcc_compl)))
3018 goto err;
3019
3020 /* Use the default EQ for MCC completions */
3021 if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
3022 goto mcc_cq_free;
3023
3024 q = &adapter->mcc_obj.q;
3025 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3026 goto mcc_cq_destroy;
3027
3028 if (be_cmd_mccq_create(adapter, q, cq))
3029 goto mcc_q_free;
3030
3031 return 0;
3032
3033 mcc_q_free:
3034 be_queue_free(adapter, q);
3035 mcc_cq_destroy:
3036 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
3037 mcc_cq_free:
3038 be_queue_free(adapter, cq);
3039 err:
3040 return -1;
3041 }
3042
be_tx_queues_destroy(struct be_adapter * adapter)3043 static void be_tx_queues_destroy(struct be_adapter *adapter)
3044 {
3045 struct be_queue_info *q;
3046 struct be_tx_obj *txo;
3047 u8 i;
3048
3049 for_all_tx_queues(adapter, txo, i) {
3050 q = &txo->q;
3051 if (q->created)
3052 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
3053 be_queue_free(adapter, q);
3054
3055 q = &txo->cq;
3056 if (q->created)
3057 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3058 be_queue_free(adapter, q);
3059 }
3060 }
3061
be_tx_qs_create(struct be_adapter * adapter)3062 static int be_tx_qs_create(struct be_adapter *adapter)
3063 {
3064 struct be_queue_info *cq;
3065 struct be_tx_obj *txo;
3066 struct be_eq_obj *eqo;
3067 int status, i;
3068
3069 adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs);
3070
3071 for_all_tx_queues(adapter, txo, i) {
3072 cq = &txo->cq;
3073 status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
3074 sizeof(struct be_eth_tx_compl));
3075 if (status)
3076 return status;
3077
3078 u64_stats_init(&txo->stats.sync);
3079 u64_stats_init(&txo->stats.sync_compl);
3080
3081 /* If num_evt_qs is less than num_tx_qs, then more than
3082 * one txq share an eq
3083 */
3084 eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
3085 status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
3086 if (status)
3087 return status;
3088
3089 status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
3090 sizeof(struct be_eth_wrb));
3091 if (status)
3092 return status;
3093
3094 status = be_cmd_txq_create(adapter, txo);
3095 if (status)
3096 return status;
3097
3098 netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
3099 eqo->idx);
3100 }
3101
3102 dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
3103 adapter->num_tx_qs);
3104 return 0;
3105 }
3106
be_rx_cqs_destroy(struct be_adapter * adapter)3107 static void be_rx_cqs_destroy(struct be_adapter *adapter)
3108 {
3109 struct be_queue_info *q;
3110 struct be_rx_obj *rxo;
3111 int i;
3112
3113 for_all_rx_queues(adapter, rxo, i) {
3114 q = &rxo->cq;
3115 if (q->created)
3116 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3117 be_queue_free(adapter, q);
3118 }
3119 }
3120
be_rx_cqs_create(struct be_adapter * adapter)3121 static int be_rx_cqs_create(struct be_adapter *adapter)
3122 {
3123 struct be_queue_info *eq, *cq;
3124 struct be_rx_obj *rxo;
3125 int rc, i;
3126
3127 adapter->num_rss_qs =
3128 min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs);
3129
3130 /* We'll use RSS only if at least 2 RSS rings are supported. */
3131 if (adapter->num_rss_qs < 2)
3132 adapter->num_rss_qs = 0;
3133
3134 adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;
3135
3136 /* When the interface is not capable of RSS rings (and there is no
3137 * need to create a default RXQ) we'll still need one RXQ
3138 */
3139 if (adapter->num_rx_qs == 0)
3140 adapter->num_rx_qs = 1;
3141
3142 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
3143 for_all_rx_queues(adapter, rxo, i) {
3144 rxo->adapter = adapter;
3145 cq = &rxo->cq;
3146 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
3147 sizeof(struct be_eth_rx_compl));
3148 if (rc)
3149 return rc;
3150
3151 u64_stats_init(&rxo->stats.sync);
3152 eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
3153 rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
3154 if (rc)
3155 return rc;
3156 }
3157
3158 dev_info(&adapter->pdev->dev,
3159 "created %d RX queue(s)\n", adapter->num_rx_qs);
3160 return 0;
3161 }
3162
be_intx(int irq,void * dev)3163 static irqreturn_t be_intx(int irq, void *dev)
3164 {
3165 struct be_eq_obj *eqo = dev;
3166 struct be_adapter *adapter = eqo->adapter;
3167 int num_evts = 0;
3168
3169 /* IRQ is not expected when NAPI is scheduled as the EQ
3170 * will not be armed.
3171 * But, this can happen on Lancer INTx where it takes
3172 * a while to de-assert INTx or in BE2 where occasionally
3173 * an interrupt may be raised even when EQ is unarmed.
3174 * If NAPI is already scheduled, then counting & notifying
3175 * events will orphan them.
3176 */
3177 if (napi_schedule_prep(&eqo->napi)) {
3178 num_evts = events_get(eqo);
3179 __napi_schedule(&eqo->napi);
3180 if (num_evts)
3181 eqo->spurious_intr = 0;
3182 }
3183 be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);
3184
3185 /* Return IRQ_HANDLED only for the first spurious intr
3186 * after a valid intr to stop the kernel from branding
3187 * this irq as a bad one!
3188 */
3189 if (num_evts || eqo->spurious_intr++ == 0)
3190 return IRQ_HANDLED;
3191 else
3192 return IRQ_NONE;
3193 }
3194
be_msix(int irq,void * dev)3195 static irqreturn_t be_msix(int irq, void *dev)
3196 {
3197 struct be_eq_obj *eqo = dev;
3198
3199 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
3200 napi_schedule(&eqo->napi);
3201 return IRQ_HANDLED;
3202 }
3203
do_gro(struct be_rx_compl_info * rxcp)3204 static inline bool do_gro(struct be_rx_compl_info *rxcp)
3205 {
3206 return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
3207 }
3208
be_process_rx(struct be_rx_obj * rxo,struct napi_struct * napi,int budget)3209 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
3210 int budget)
3211 {
3212 struct be_adapter *adapter = rxo->adapter;
3213 struct be_queue_info *rx_cq = &rxo->cq;
3214 struct be_rx_compl_info *rxcp;
3215 u32 work_done;
3216 u32 frags_consumed = 0;
3217
3218 for (work_done = 0; work_done < budget; work_done++) {
3219 rxcp = be_rx_compl_get(rxo);
3220 if (!rxcp)
3221 break;
3222
3223 /* Is it a flush compl that has no data */
3224 if (unlikely(rxcp->num_rcvd == 0))
3225 goto loop_continue;
3226
3227 /* Discard compl with partial DMA Lancer B0 */
3228 if (unlikely(!rxcp->pkt_size)) {
3229 be_rx_compl_discard(rxo, rxcp);
3230 goto loop_continue;
3231 }
3232
3233 /* On BE drop pkts that arrive due to imperfect filtering in
3234 * promiscuous mode on some skews
3235 */
3236 if (unlikely(rxcp->port != adapter->port_num &&
3237 !lancer_chip(adapter))) {
3238 be_rx_compl_discard(rxo, rxcp);
3239 goto loop_continue;
3240 }
3241
3242 if (do_gro(rxcp))
3243 be_rx_compl_process_gro(rxo, napi, rxcp);
3244 else
3245 be_rx_compl_process(rxo, napi, rxcp);
3246
3247 loop_continue:
3248 frags_consumed += rxcp->num_rcvd;
3249 be_rx_stats_update(rxo, rxcp);
3250 }
3251
3252 if (work_done) {
3253 be_cq_notify(adapter, rx_cq->id, true, work_done);
3254
3255 /* When an rx-obj gets into post_starved state, just
3256 * let be_worker do the posting.
3257 */
3258 if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
3259 !rxo->rx_post_starved)
3260 be_post_rx_frags(rxo, GFP_ATOMIC,
3261 max_t(u32, MAX_RX_POST,
3262 frags_consumed));
3263 }
3264
3265 return work_done;
3266 }
3267
3268
be_process_tx(struct be_adapter * adapter,struct be_tx_obj * txo,int idx)3269 static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
3270 int idx)
3271 {
3272 int num_wrbs = 0, work_done = 0;
3273 struct be_tx_compl_info *txcp;
3274
3275 while ((txcp = be_tx_compl_get(adapter, txo))) {
3276 num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);
3277 work_done++;
3278 }
3279
3280 if (work_done) {
3281 be_cq_notify(adapter, txo->cq.id, true, work_done);
3282 atomic_sub(num_wrbs, &txo->q.used);
3283
3284 /* As Tx wrbs have been freed up, wake up netdev queue
3285 * if it was stopped due to lack of tx wrbs. */
3286 if (__netif_subqueue_stopped(adapter->netdev, idx) &&
3287 be_can_txq_wake(txo)) {
3288 netif_wake_subqueue(adapter->netdev, idx);
3289 }
3290
3291 u64_stats_update_begin(&tx_stats(txo)->sync_compl);
3292 tx_stats(txo)->tx_compl += work_done;
3293 u64_stats_update_end(&tx_stats(txo)->sync_compl);
3294 }
3295 }
3296
be_poll(struct napi_struct * napi,int budget)3297 int be_poll(struct napi_struct *napi, int budget)
3298 {
3299 struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3300 struct be_adapter *adapter = eqo->adapter;
3301 int max_work = 0, work, i, num_evts;
3302 struct be_rx_obj *rxo;
3303 struct be_tx_obj *txo;
3304 u32 mult_enc = 0;
3305
3306 num_evts = events_get(eqo);
3307
3308 for_all_tx_queues_on_eq(adapter, eqo, txo, i)
3309 be_process_tx(adapter, txo, i);
3310
3311 /* This loop will iterate twice for EQ0 in which
3312 * completions of the last RXQ (default one) are also processed
3313 * For other EQs the loop iterates only once
3314 */
3315 for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3316 work = be_process_rx(rxo, napi, budget);
3317 max_work = max(work, max_work);
3318 }
3319
3320 if (is_mcc_eqo(eqo))
3321 be_process_mcc(adapter);
3322
3323 if (max_work < budget) {
3324 napi_complete_done(napi, max_work);
3325
3326 /* Skyhawk EQ_DB has a provision to set the rearm to interrupt
3327 * delay via a delay multiplier encoding value
3328 */
3329 if (skyhawk_chip(adapter))
3330 mult_enc = be_get_eq_delay_mult_enc(eqo);
3331
3332 be_eq_notify(adapter, eqo->q.id, true, false, num_evts,
3333 mult_enc);
3334 } else {
3335 /* As we'll continue in polling mode, count and clear events */
3336 be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);
3337 }
3338 return max_work;
3339 }
3340
be_detect_error(struct be_adapter * adapter)3341 void be_detect_error(struct be_adapter *adapter)
3342 {
3343 u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
3344 u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
3345 struct device *dev = &adapter->pdev->dev;
3346 u16 val;
3347 u32 i;
3348
3349 if (be_check_error(adapter, BE_ERROR_HW))
3350 return;
3351
3352 if (lancer_chip(adapter)) {
3353 sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
3354 if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
3355 be_set_error(adapter, BE_ERROR_UE);
3356 sliport_err1 = ioread32(adapter->db +
3357 SLIPORT_ERROR1_OFFSET);
3358 sliport_err2 = ioread32(adapter->db +
3359 SLIPORT_ERROR2_OFFSET);
3360 /* Do not log error messages if its a FW reset */
3361 if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
3362 sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
3363 dev_info(dev, "Reset is in progress\n");
3364 } else {
3365 dev_err(dev, "Error detected in the card\n");
3366 dev_err(dev, "ERR: sliport status 0x%x\n",
3367 sliport_status);
3368 dev_err(dev, "ERR: sliport error1 0x%x\n",
3369 sliport_err1);
3370 dev_err(dev, "ERR: sliport error2 0x%x\n",
3371 sliport_err2);
3372 }
3373 }
3374 } else {
3375 ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);
3376 ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);
3377 ue_lo_mask = ioread32(adapter->pcicfg +
3378 PCICFG_UE_STATUS_LOW_MASK);
3379 ue_hi_mask = ioread32(adapter->pcicfg +
3380 PCICFG_UE_STATUS_HI_MASK);
3381
3382 ue_lo = (ue_lo & ~ue_lo_mask);
3383 ue_hi = (ue_hi & ~ue_hi_mask);
3384
3385 if (ue_lo || ue_hi) {
3386 /* On certain platforms BE3 hardware can indicate
3387 * spurious UEs. In case of a UE in the chip,
3388 * the POST register correctly reports either a
3389 * FAT_LOG_START state (FW is currently dumping
3390 * FAT log data) or a ARMFW_UE state. Check for the
3391 * above states to ascertain if the UE is valid or not.
3392 */
3393 if (BE3_chip(adapter)) {
3394 val = be_POST_stage_get(adapter);
3395 if ((val & POST_STAGE_FAT_LOG_START)
3396 != POST_STAGE_FAT_LOG_START &&
3397 (val & POST_STAGE_ARMFW_UE)
3398 != POST_STAGE_ARMFW_UE &&
3399 (val & POST_STAGE_RECOVERABLE_ERR)
3400 != POST_STAGE_RECOVERABLE_ERR)
3401 return;
3402 }
3403
3404 dev_err(dev, "Error detected in the adapter");
3405 be_set_error(adapter, BE_ERROR_UE);
3406
3407 for (i = 0; ue_lo; ue_lo >>= 1, i++) {
3408 if (ue_lo & 1)
3409 dev_err(dev, "UE: %s bit set\n",
3410 ue_status_low_desc[i]);
3411 }
3412 for (i = 0; ue_hi; ue_hi >>= 1, i++) {
3413 if (ue_hi & 1)
3414 dev_err(dev, "UE: %s bit set\n",
3415 ue_status_hi_desc[i]);
3416 }
3417 }
3418 }
3419 }
3420
be_msix_disable(struct be_adapter * adapter)3421 static void be_msix_disable(struct be_adapter *adapter)
3422 {
3423 if (msix_enabled(adapter)) {
3424 pci_disable_msix(adapter->pdev);
3425 adapter->num_msix_vec = 0;
3426 adapter->num_msix_roce_vec = 0;
3427 }
3428 }
3429
be_msix_enable(struct be_adapter * adapter)3430 static int be_msix_enable(struct be_adapter *adapter)
3431 {
3432 unsigned int i, max_roce_eqs;
3433 struct device *dev = &adapter->pdev->dev;
3434 int num_vec;
3435
3436 /* If RoCE is supported, program the max number of vectors that
3437 * could be used for NIC and RoCE, else, just program the number
3438 * we'll use initially.
3439 */
3440 if (be_roce_supported(adapter)) {
3441 max_roce_eqs =
3442 be_max_func_eqs(adapter) - be_max_nic_eqs(adapter);
3443 max_roce_eqs = min(max_roce_eqs, num_online_cpus());
3444 num_vec = be_max_any_irqs(adapter) + max_roce_eqs;
3445 } else {
3446 num_vec = max(adapter->cfg_num_rx_irqs,
3447 adapter->cfg_num_tx_irqs);
3448 }
3449
3450 for (i = 0; i < num_vec; i++)
3451 adapter->msix_entries[i].entry = i;
3452
3453 num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
3454 MIN_MSIX_VECTORS, num_vec);
3455 if (num_vec < 0)
3456 goto fail;
3457
3458 if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
3459 adapter->num_msix_roce_vec = num_vec / 2;
3460 dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
3461 adapter->num_msix_roce_vec);
3462 }
3463
3464 adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
3465
3466 dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
3467 adapter->num_msix_vec);
3468 return 0;
3469
3470 fail:
3471 dev_warn(dev, "MSIx enable failed\n");
3472
3473 /* INTx is not supported in VFs, so fail probe if enable_msix fails */
3474 if (be_virtfn(adapter))
3475 return num_vec;
3476 return 0;
3477 }
3478
be_msix_vec_get(struct be_adapter * adapter,struct be_eq_obj * eqo)3479 static inline int be_msix_vec_get(struct be_adapter *adapter,
3480 struct be_eq_obj *eqo)
3481 {
3482 return adapter->msix_entries[eqo->msix_idx].vector;
3483 }
3484
be_msix_register(struct be_adapter * adapter)3485 static int be_msix_register(struct be_adapter *adapter)
3486 {
3487 struct net_device *netdev = adapter->netdev;
3488 struct be_eq_obj *eqo;
3489 int status, i, vec;
3490
3491 for_all_evt_queues(adapter, eqo, i) {
3492 sprintf(eqo->desc, "%s-q%d", netdev->name, i);
3493 vec = be_msix_vec_get(adapter, eqo);
3494 status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
3495 if (status)
3496 goto err_msix;
3497
3498 irq_update_affinity_hint(vec, eqo->affinity_mask);
3499 }
3500
3501 return 0;
3502 err_msix:
3503 for (i--; i >= 0; i--) {
3504 eqo = &adapter->eq_obj[i];
3505 free_irq(be_msix_vec_get(adapter, eqo), eqo);
3506 }
3507 dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
3508 status);
3509 be_msix_disable(adapter);
3510 return status;
3511 }
3512
be_irq_register(struct be_adapter * adapter)3513 static int be_irq_register(struct be_adapter *adapter)
3514 {
3515 struct net_device *netdev = adapter->netdev;
3516 int status;
3517
3518 if (msix_enabled(adapter)) {
3519 status = be_msix_register(adapter);
3520 if (status == 0)
3521 goto done;
3522 /* INTx is not supported for VF */
3523 if (be_virtfn(adapter))
3524 return status;
3525 }
3526
3527 /* INTx: only the first EQ is used */
3528 netdev->irq = adapter->pdev->irq;
3529 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
3530 &adapter->eq_obj[0]);
3531 if (status) {
3532 dev_err(&adapter->pdev->dev,
3533 "INTx request IRQ failed - err %d\n", status);
3534 return status;
3535 }
3536 done:
3537 adapter->isr_registered = true;
3538 return 0;
3539 }
3540
be_irq_unregister(struct be_adapter * adapter)3541 static void be_irq_unregister(struct be_adapter *adapter)
3542 {
3543 struct net_device *netdev = adapter->netdev;
3544 struct be_eq_obj *eqo;
3545 int i, vec;
3546
3547 if (!adapter->isr_registered)
3548 return;
3549
3550 /* INTx */
3551 if (!msix_enabled(adapter)) {
3552 free_irq(netdev->irq, &adapter->eq_obj[0]);
3553 goto done;
3554 }
3555
3556 /* MSIx */
3557 for_all_evt_queues(adapter, eqo, i) {
3558 vec = be_msix_vec_get(adapter, eqo);
3559 irq_update_affinity_hint(vec, NULL);
3560 free_irq(vec, eqo);
3561 }
3562
3563 done:
3564 adapter->isr_registered = false;
3565 }
3566
be_rx_qs_destroy(struct be_adapter * adapter)3567 static void be_rx_qs_destroy(struct be_adapter *adapter)
3568 {
3569 struct rss_info *rss = &adapter->rss_info;
3570 struct be_queue_info *q;
3571 struct be_rx_obj *rxo;
3572 int i;
3573
3574 for_all_rx_queues(adapter, rxo, i) {
3575 q = &rxo->q;
3576 if (q->created) {
3577 /* If RXQs are destroyed while in an "out of buffer"
3578 * state, there is a possibility of an HW stall on
3579 * Lancer. So, post 64 buffers to each queue to relieve
3580 * the "out of buffer" condition.
3581 * Make sure there's space in the RXQ before posting.
3582 */
3583 if (lancer_chip(adapter)) {
3584 be_rx_cq_clean(rxo);
3585 if (atomic_read(&q->used) == 0)
3586 be_post_rx_frags(rxo, GFP_KERNEL,
3587 MAX_RX_POST);
3588 }
3589
3590 be_cmd_rxq_destroy(adapter, q);
3591 be_rx_cq_clean(rxo);
3592 be_rxq_clean(rxo);
3593 }
3594 be_queue_free(adapter, q);
3595 }
3596
3597 if (rss->rss_flags) {
3598 rss->rss_flags = RSS_ENABLE_NONE;
3599 be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3600 128, rss->rss_hkey);
3601 }
3602 }
3603
be_disable_if_filters(struct be_adapter * adapter)3604 static void be_disable_if_filters(struct be_adapter *adapter)
3605 {
3606 /* Don't delete MAC on BE3 VFs without FILTMGMT privilege */
3607 if (!BEx_chip(adapter) || !be_virtfn(adapter) ||
3608 check_privilege(adapter, BE_PRIV_FILTMGMT)) {
3609 be_dev_mac_del(adapter, adapter->pmac_id[0]);
3610 eth_zero_addr(adapter->dev_mac);
3611 }
3612
3613 be_clear_uc_list(adapter);
3614 be_clear_mc_list(adapter);
3615
3616 /* The IFACE flags are enabled in the open path and cleared
3617 * in the close path. When a VF gets detached from the host and
3618 * assigned to a VM the following happens:
3619 * - VF's IFACE flags get cleared in the detach path
3620 * - IFACE create is issued by the VF in the attach path
3621 * Due to a bug in the BE3/Skyhawk-R FW
3622 * (Lancer FW doesn't have the bug), the IFACE capability flags
3623 * specified along with the IFACE create cmd issued by a VF are not
3624 * honoured by FW. As a consequence, if a *new* driver
3625 * (that enables/disables IFACE flags in open/close)
3626 * is loaded in the host and an *old* driver is * used by a VM/VF,
3627 * the IFACE gets created *without* the needed flags.
3628 * To avoid this, disable RX-filter flags only for Lancer.
3629 */
3630 if (lancer_chip(adapter)) {
3631 be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
3632 adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
3633 }
3634 }
3635
be_close(struct net_device * netdev)3636 static int be_close(struct net_device *netdev)
3637 {
3638 struct be_adapter *adapter = netdev_priv(netdev);
3639 struct be_eq_obj *eqo;
3640 int i;
3641
3642 /* This protection is needed as be_close() may be called even when the
3643 * adapter is in cleared state (after eeh perm failure)
3644 */
3645 if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
3646 return 0;
3647
3648 /* Before attempting cleanup ensure all the pending cmds in the
3649 * config_wq have finished execution
3650 */
3651 flush_workqueue(be_wq);
3652
3653 be_disable_if_filters(adapter);
3654
3655 if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
3656 for_all_evt_queues(adapter, eqo, i) {
3657 napi_disable(&eqo->napi);
3658 }
3659 adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
3660 }
3661
3662 be_async_mcc_disable(adapter);
3663
3664 /* Wait for all pending tx completions to arrive so that
3665 * all tx skbs are freed.
3666 */
3667 netif_tx_disable(netdev);
3668 be_tx_compl_clean(adapter);
3669
3670 be_rx_qs_destroy(adapter);
3671
3672 for_all_evt_queues(adapter, eqo, i) {
3673 if (msix_enabled(adapter))
3674 synchronize_irq(be_msix_vec_get(adapter, eqo));
3675 else
3676 synchronize_irq(netdev->irq);
3677 be_eq_clean(eqo);
3678 }
3679
3680 be_irq_unregister(adapter);
3681
3682 return 0;
3683 }
3684
be_rx_qs_create(struct be_adapter * adapter)3685 static int be_rx_qs_create(struct be_adapter *adapter)
3686 {
3687 struct rss_info *rss = &adapter->rss_info;
3688 u8 rss_key[RSS_HASH_KEY_LEN];
3689 struct be_rx_obj *rxo;
3690 int rc, i, j;
3691
3692 for_all_rx_queues(adapter, rxo, i) {
3693 rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
3694 sizeof(struct be_eth_rx_d));
3695 if (rc)
3696 return rc;
3697 }
3698
3699 if (adapter->need_def_rxq || !adapter->num_rss_qs) {
3700 rxo = default_rxo(adapter);
3701 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3702 rx_frag_size, adapter->if_handle,
3703 false, &rxo->rss_id);
3704 if (rc)
3705 return rc;
3706 }
3707
3708 for_all_rss_queues(adapter, rxo, i) {
3709 rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3710 rx_frag_size, adapter->if_handle,
3711 true, &rxo->rss_id);
3712 if (rc)
3713 return rc;
3714 }
3715
3716 if (be_multi_rxq(adapter)) {
3717 for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {
3718 for_all_rss_queues(adapter, rxo, i) {
3719 if ((j + i) >= RSS_INDIR_TABLE_LEN)
3720 break;
3721 rss->rsstable[j + i] = rxo->rss_id;
3722 rss->rss_queue[j + i] = i;
3723 }
3724 }
3725 rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
3726 RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
3727
3728 if (!BEx_chip(adapter))
3729 rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |
3730 RSS_ENABLE_UDP_IPV6;
3731
3732 netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
3733 rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3734 RSS_INDIR_TABLE_LEN, rss_key);
3735 if (rc) {
3736 rss->rss_flags = RSS_ENABLE_NONE;
3737 return rc;
3738 }
3739
3740 memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
3741 } else {
3742 /* Disable RSS, if only default RX Q is created */
3743 rss->rss_flags = RSS_ENABLE_NONE;
3744 }
3745
3746
3747 /* Post 1 less than RXQ-len to avoid head being equal to tail,
3748 * which is a queue empty condition
3749 */
3750 for_all_rx_queues(adapter, rxo, i)
3751 be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);
3752
3753 return 0;
3754 }
3755
be_enable_if_filters(struct be_adapter * adapter)3756 static int be_enable_if_filters(struct be_adapter *adapter)
3757 {
3758 int status;
3759
3760 status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);
3761 if (status)
3762 return status;
3763
3764 /* Normally this condition usually true as the ->dev_mac is zeroed.
3765 * But on BE3 VFs the initial MAC is pre-programmed by PF and
3766 * subsequent be_dev_mac_add() can fail (after fresh boot)
3767 */
3768 if (!ether_addr_equal(adapter->dev_mac, adapter->netdev->dev_addr)) {
3769 int old_pmac_id = -1;
3770
3771 /* Remember old programmed MAC if any - can happen on BE3 VF */
3772 if (!is_zero_ether_addr(adapter->dev_mac))
3773 old_pmac_id = adapter->pmac_id[0];
3774
3775 status = be_dev_mac_add(adapter, adapter->netdev->dev_addr);
3776 if (status)
3777 return status;
3778
3779 /* Delete the old programmed MAC as we successfully programmed
3780 * a new MAC
3781 */
3782 if (old_pmac_id >= 0 && old_pmac_id != adapter->pmac_id[0])
3783 be_dev_mac_del(adapter, old_pmac_id);
3784
3785 ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr);
3786 }
3787
3788 if (adapter->vlans_added)
3789 be_vid_config(adapter);
3790
3791 __be_set_rx_mode(adapter);
3792
3793 return 0;
3794 }
3795
be_open(struct net_device * netdev)3796 static int be_open(struct net_device *netdev)
3797 {
3798 struct be_adapter *adapter = netdev_priv(netdev);
3799 struct be_eq_obj *eqo;
3800 struct be_rx_obj *rxo;
3801 struct be_tx_obj *txo;
3802 u8 link_status;
3803 int status, i;
3804
3805 status = be_rx_qs_create(adapter);
3806 if (status)
3807 goto err;
3808
3809 status = be_enable_if_filters(adapter);
3810 if (status)
3811 goto err;
3812
3813 status = be_irq_register(adapter);
3814 if (status)
3815 goto err;
3816
3817 for_all_rx_queues(adapter, rxo, i)
3818 be_cq_notify(adapter, rxo->cq.id, true, 0);
3819
3820 for_all_tx_queues(adapter, txo, i)
3821 be_cq_notify(adapter, txo->cq.id, true, 0);
3822
3823 be_async_mcc_enable(adapter);
3824
3825 for_all_evt_queues(adapter, eqo, i) {
3826 napi_enable(&eqo->napi);
3827 be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);
3828 }
3829 adapter->flags |= BE_FLAGS_NAPI_ENABLED;
3830
3831 status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
3832 if (!status)
3833 be_link_status_update(adapter, link_status);
3834
3835 netif_tx_start_all_queues(netdev);
3836
3837 udp_tunnel_nic_reset_ntf(netdev);
3838
3839 return 0;
3840 err:
3841 be_close(adapter->netdev);
3842 return -EIO;
3843 }
3844
be_vf_eth_addr_generate(struct be_adapter * adapter,u8 * mac)3845 static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
3846 {
3847 u32 addr;
3848
3849 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
3850
3851 mac[5] = (u8)(addr & 0xFF);
3852 mac[4] = (u8)((addr >> 8) & 0xFF);
3853 mac[3] = (u8)((addr >> 16) & 0xFF);
3854 /* Use the OUI from the current MAC address */
3855 memcpy(mac, adapter->netdev->dev_addr, 3);
3856 }
3857
3858 /*
3859 * Generate a seed MAC address from the PF MAC Address using jhash.
3860 * MAC Address for VFs are assigned incrementally starting from the seed.
3861 * These addresses are programmed in the ASIC by the PF and the VF driver
3862 * queries for the MAC address during its probe.
3863 */
be_vf_eth_addr_config(struct be_adapter * adapter)3864 static int be_vf_eth_addr_config(struct be_adapter *adapter)
3865 {
3866 u32 vf;
3867 int status = 0;
3868 u8 mac[ETH_ALEN];
3869 struct be_vf_cfg *vf_cfg;
3870
3871 be_vf_eth_addr_generate(adapter, mac);
3872
3873 for_all_vfs(adapter, vf_cfg, vf) {
3874 if (BEx_chip(adapter))
3875 status = be_cmd_pmac_add(adapter, mac,
3876 vf_cfg->if_handle,
3877 &vf_cfg->pmac_id, vf + 1);
3878 else
3879 status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
3880 vf + 1);
3881
3882 if (status)
3883 dev_err(&adapter->pdev->dev,
3884 "Mac address assignment failed for VF %d\n",
3885 vf);
3886 else
3887 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3888
3889 mac[5] += 1;
3890 }
3891 return status;
3892 }
3893
be_vfs_mac_query(struct be_adapter * adapter)3894 static int be_vfs_mac_query(struct be_adapter *adapter)
3895 {
3896 int status, vf;
3897 u8 mac[ETH_ALEN];
3898 struct be_vf_cfg *vf_cfg;
3899
3900 for_all_vfs(adapter, vf_cfg, vf) {
3901 status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,
3902 mac, vf_cfg->if_handle,
3903 false, vf+1);
3904 if (status)
3905 return status;
3906 memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3907 }
3908 return 0;
3909 }
3910
be_vf_clear(struct be_adapter * adapter)3911 static void be_vf_clear(struct be_adapter *adapter)
3912 {
3913 struct be_vf_cfg *vf_cfg;
3914 u32 vf;
3915
3916 if (pci_vfs_assigned(adapter->pdev)) {
3917 dev_warn(&adapter->pdev->dev,
3918 "VFs are assigned to VMs: not disabling VFs\n");
3919 goto done;
3920 }
3921
3922 pci_disable_sriov(adapter->pdev);
3923
3924 for_all_vfs(adapter, vf_cfg, vf) {
3925 if (BEx_chip(adapter))
3926 be_cmd_pmac_del(adapter, vf_cfg->if_handle,
3927 vf_cfg->pmac_id, vf + 1);
3928 else
3929 be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
3930 vf + 1);
3931
3932 be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
3933 }
3934
3935 if (BE3_chip(adapter))
3936 be_cmd_set_hsw_config(adapter, 0, 0,
3937 adapter->if_handle,
3938 PORT_FWD_TYPE_PASSTHRU, 0);
3939 done:
3940 kfree(adapter->vf_cfg);
3941 adapter->num_vfs = 0;
3942 adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3943 }
3944
be_clear_queues(struct be_adapter * adapter)3945 static void be_clear_queues(struct be_adapter *adapter)
3946 {
3947 be_mcc_queues_destroy(adapter);
3948 be_rx_cqs_destroy(adapter);
3949 be_tx_queues_destroy(adapter);
3950 be_evt_queues_destroy(adapter);
3951 }
3952
be_cancel_worker(struct be_adapter * adapter)3953 static void be_cancel_worker(struct be_adapter *adapter)
3954 {
3955 if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
3956 cancel_delayed_work_sync(&adapter->work);
3957 adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
3958 }
3959 }
3960
be_cancel_err_detection(struct be_adapter * adapter)3961 static void be_cancel_err_detection(struct be_adapter *adapter)
3962 {
3963 struct be_error_recovery *err_rec = &adapter->error_recovery;
3964
3965 if (!be_err_recovery_workq)
3966 return;
3967
3968 if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {
3969 cancel_delayed_work_sync(&err_rec->err_detection_work);
3970 adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;
3971 }
3972 }
3973
3974 /* VxLAN offload Notes:
3975 *
3976 * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't
3977 * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload
3978 * is expected to work across all types of IP tunnels once exported. Skyhawk
3979 * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN
3980 * offloads in hw_enc_features only when a VxLAN port is added. If other (non
3981 * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for
3982 * those other tunnels are unexported on the fly through ndo_features_check().
3983 */
be_vxlan_set_port(struct net_device * netdev,unsigned int table,unsigned int entry,struct udp_tunnel_info * ti)3984 static int be_vxlan_set_port(struct net_device *netdev, unsigned int table,
3985 unsigned int entry, struct udp_tunnel_info *ti)
3986 {
3987 struct be_adapter *adapter = netdev_priv(netdev);
3988 struct device *dev = &adapter->pdev->dev;
3989 int status;
3990
3991 status = be_cmd_manage_iface(adapter, adapter->if_handle,
3992 OP_CONVERT_NORMAL_TO_TUNNEL);
3993 if (status) {
3994 dev_warn(dev, "Failed to convert normal interface to tunnel\n");
3995 return status;
3996 }
3997 adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
3998
3999 status = be_cmd_set_vxlan_port(adapter, ti->port);
4000 if (status) {
4001 dev_warn(dev, "Failed to add VxLAN port\n");
4002 return status;
4003 }
4004 adapter->vxlan_port = ti->port;
4005
4006 netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
4007 NETIF_F_TSO | NETIF_F_TSO6 |
4008 NETIF_F_GSO_UDP_TUNNEL;
4009
4010 dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
4011 be16_to_cpu(ti->port));
4012 return 0;
4013 }
4014
be_vxlan_unset_port(struct net_device * netdev,unsigned int table,unsigned int entry,struct udp_tunnel_info * ti)4015 static int be_vxlan_unset_port(struct net_device *netdev, unsigned int table,
4016 unsigned int entry, struct udp_tunnel_info *ti)
4017 {
4018 struct be_adapter *adapter = netdev_priv(netdev);
4019
4020 if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
4021 be_cmd_manage_iface(adapter, adapter->if_handle,
4022 OP_CONVERT_TUNNEL_TO_NORMAL);
4023
4024 if (adapter->vxlan_port)
4025 be_cmd_set_vxlan_port(adapter, 0);
4026
4027 adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
4028 adapter->vxlan_port = 0;
4029
4030 netdev->hw_enc_features = 0;
4031 return 0;
4032 }
4033
4034 static const struct udp_tunnel_nic_info be_udp_tunnels = {
4035 .set_port = be_vxlan_set_port,
4036 .unset_port = be_vxlan_unset_port,
4037 .flags = UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
4038 .tables = {
4039 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
4040 },
4041 };
4042
be_calculate_vf_res(struct be_adapter * adapter,u16 num_vfs,struct be_resources * vft_res)4043 static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,
4044 struct be_resources *vft_res)
4045 {
4046 struct be_resources res = adapter->pool_res;
4047 u32 vf_if_cap_flags = res.vf_if_cap_flags;
4048 struct be_resources res_mod = {0};
4049 u16 num_vf_qs = 1;
4050
4051 /* Distribute the queue resources among the PF and it's VFs */
4052 if (num_vfs) {
4053 /* Divide the rx queues evenly among the VFs and the PF, capped
4054 * at VF-EQ-count. Any remainder queues belong to the PF.
4055 */
4056 num_vf_qs = min(SH_VF_MAX_NIC_EQS,
4057 res.max_rss_qs / (num_vfs + 1));
4058
4059 /* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES
4060 * RSS Tables per port. Provide RSS on VFs, only if number of
4061 * VFs requested is less than it's PF Pool's RSS Tables limit.
4062 */
4063 if (num_vfs >= be_max_pf_pool_rss_tables(adapter))
4064 num_vf_qs = 1;
4065 }
4066
4067 /* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,
4068 * which are modifiable using SET_PROFILE_CONFIG cmd.
4069 */
4070 be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,
4071 RESOURCE_MODIFIABLE, 0);
4072
4073 /* If RSS IFACE capability flags are modifiable for a VF, set the
4074 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if
4075 * more than 1 RSSQ is available for a VF.
4076 * Otherwise, provision only 1 queue pair for VF.
4077 */
4078 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {
4079 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4080 if (num_vf_qs > 1) {
4081 vf_if_cap_flags |= BE_IF_FLAGS_RSS;
4082 if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)
4083 vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;
4084 } else {
4085 vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |
4086 BE_IF_FLAGS_DEFQ_RSS);
4087 }
4088 } else {
4089 num_vf_qs = 1;
4090 }
4091
4092 if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
4093 vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4094 vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4095 }
4096
4097 vft_res->vf_if_cap_flags = vf_if_cap_flags;
4098 vft_res->max_rx_qs = num_vf_qs;
4099 vft_res->max_rss_qs = num_vf_qs;
4100 vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);
4101 vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);
4102
4103 /* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally
4104 * among the PF and it's VFs, if the fields are changeable
4105 */
4106 if (res_mod.max_uc_mac == FIELD_MODIFIABLE)
4107 vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);
4108
4109 if (res_mod.max_vlans == FIELD_MODIFIABLE)
4110 vft_res->max_vlans = res.max_vlans / (num_vfs + 1);
4111
4112 if (res_mod.max_iface_count == FIELD_MODIFIABLE)
4113 vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);
4114
4115 if (res_mod.max_mcc_count == FIELD_MODIFIABLE)
4116 vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);
4117 }
4118
be_if_destroy(struct be_adapter * adapter)4119 static void be_if_destroy(struct be_adapter *adapter)
4120 {
4121 be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4122
4123 kfree(adapter->pmac_id);
4124 adapter->pmac_id = NULL;
4125
4126 kfree(adapter->mc_list);
4127 adapter->mc_list = NULL;
4128
4129 kfree(adapter->uc_list);
4130 adapter->uc_list = NULL;
4131 }
4132
be_clear(struct be_adapter * adapter)4133 static int be_clear(struct be_adapter *adapter)
4134 {
4135 struct pci_dev *pdev = adapter->pdev;
4136 struct be_resources vft_res = {0};
4137
4138 be_cancel_worker(adapter);
4139
4140 flush_workqueue(be_wq);
4141
4142 if (sriov_enabled(adapter))
4143 be_vf_clear(adapter);
4144
4145 /* Re-configure FW to distribute resources evenly across max-supported
4146 * number of VFs, only when VFs are not already enabled.
4147 */
4148 if (skyhawk_chip(adapter) && be_physfn(adapter) &&
4149 !pci_vfs_assigned(pdev)) {
4150 be_calculate_vf_res(adapter,
4151 pci_sriov_get_totalvfs(pdev),
4152 &vft_res);
4153 be_cmd_set_sriov_config(adapter, adapter->pool_res,
4154 pci_sriov_get_totalvfs(pdev),
4155 &vft_res);
4156 }
4157
4158 be_vxlan_unset_port(adapter->netdev, 0, 0, NULL);
4159
4160 be_if_destroy(adapter);
4161
4162 be_clear_queues(adapter);
4163
4164 be_msix_disable(adapter);
4165 adapter->flags &= ~BE_FLAGS_SETUP_DONE;
4166 return 0;
4167 }
4168
be_vfs_if_create(struct be_adapter * adapter)4169 static int be_vfs_if_create(struct be_adapter *adapter)
4170 {
4171 struct be_resources res = {0};
4172 u32 cap_flags, en_flags, vf;
4173 struct be_vf_cfg *vf_cfg;
4174 int status;
4175
4176 /* If a FW profile exists, then cap_flags are updated */
4177 cap_flags = BE_VF_IF_EN_FLAGS;
4178
4179 for_all_vfs(adapter, vf_cfg, vf) {
4180 if (!BE3_chip(adapter)) {
4181 status = be_cmd_get_profile_config(adapter, &res, NULL,
4182 ACTIVE_PROFILE_TYPE,
4183 RESOURCE_LIMITS,
4184 vf + 1);
4185 if (!status) {
4186 cap_flags = res.if_cap_flags;
4187 /* Prevent VFs from enabling VLAN promiscuous
4188 * mode
4189 */
4190 cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4191 }
4192 }
4193
4194 /* PF should enable IF flags during proxy if_create call */
4195 en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
4196 status = be_cmd_if_create(adapter, cap_flags, en_flags,
4197 &vf_cfg->if_handle, vf + 1);
4198 if (status)
4199 return status;
4200 }
4201
4202 return 0;
4203 }
4204
be_vf_setup_init(struct be_adapter * adapter)4205 static int be_vf_setup_init(struct be_adapter *adapter)
4206 {
4207 struct be_vf_cfg *vf_cfg;
4208 int vf;
4209
4210 adapter->vf_cfg = kzalloc_objs(*vf_cfg, adapter->num_vfs, GFP_KERNEL);
4211 if (!adapter->vf_cfg)
4212 return -ENOMEM;
4213
4214 for_all_vfs(adapter, vf_cfg, vf) {
4215 vf_cfg->if_handle = -1;
4216 vf_cfg->pmac_id = -1;
4217 }
4218 return 0;
4219 }
4220
be_vf_setup(struct be_adapter * adapter)4221 static int be_vf_setup(struct be_adapter *adapter)
4222 {
4223 struct device *dev = &adapter->pdev->dev;
4224 struct be_vf_cfg *vf_cfg;
4225 int status, old_vfs, vf;
4226 bool spoofchk;
4227
4228 old_vfs = pci_num_vf(adapter->pdev);
4229
4230 status = be_vf_setup_init(adapter);
4231 if (status)
4232 goto err;
4233
4234 if (old_vfs) {
4235 for_all_vfs(adapter, vf_cfg, vf) {
4236 status = be_cmd_get_if_id(adapter, vf_cfg, vf);
4237 if (status)
4238 goto err;
4239 }
4240
4241 status = be_vfs_mac_query(adapter);
4242 if (status)
4243 goto err;
4244 } else {
4245 status = be_vfs_if_create(adapter);
4246 if (status)
4247 goto err;
4248
4249 status = be_vf_eth_addr_config(adapter);
4250 if (status)
4251 goto err;
4252 }
4253
4254 for_all_vfs(adapter, vf_cfg, vf) {
4255 /* Allow VFs to programs MAC/VLAN filters */
4256 status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
4257 vf + 1);
4258 if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
4259 status = be_cmd_set_fn_privileges(adapter,
4260 vf_cfg->privileges |
4261 BE_PRIV_FILTMGMT,
4262 vf + 1);
4263 if (!status) {
4264 vf_cfg->privileges |= BE_PRIV_FILTMGMT;
4265 dev_info(dev, "VF%d has FILTMGMT privilege\n",
4266 vf);
4267 }
4268 }
4269
4270 /* Allow full available bandwidth */
4271 if (!old_vfs)
4272 be_cmd_config_qos(adapter, 0, 0, vf + 1);
4273
4274 status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
4275 vf_cfg->if_handle, NULL,
4276 &spoofchk);
4277 if (!status)
4278 vf_cfg->spoofchk = spoofchk;
4279
4280 if (!old_vfs) {
4281 be_cmd_enable_vf(adapter, vf + 1);
4282 be_cmd_set_logical_link_config(adapter,
4283 IFLA_VF_LINK_STATE_AUTO,
4284 vf+1);
4285 }
4286 }
4287
4288 if (!old_vfs) {
4289 status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
4290 if (status) {
4291 dev_err(dev, "SRIOV enable failed\n");
4292 adapter->num_vfs = 0;
4293 goto err;
4294 }
4295 }
4296
4297 if (BE3_chip(adapter)) {
4298 /* On BE3, enable VEB only when SRIOV is enabled */
4299 status = be_cmd_set_hsw_config(adapter, 0, 0,
4300 adapter->if_handle,
4301 PORT_FWD_TYPE_VEB, 0);
4302 if (status)
4303 goto err;
4304 }
4305
4306 adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4307 return 0;
4308 err:
4309 dev_err(dev, "VF setup failed\n");
4310 be_vf_clear(adapter);
4311 return status;
4312 }
4313
4314 /* Converting function_mode bits on BE3 to SH mc_type enums */
4315
be_convert_mc_type(u32 function_mode)4316 static u8 be_convert_mc_type(u32 function_mode)
4317 {
4318 if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4319 return vNIC1;
4320 else if (function_mode & QNQ_MODE)
4321 return FLEX10;
4322 else if (function_mode & VNIC_MODE)
4323 return vNIC2;
4324 else if (function_mode & UMC_ENABLED)
4325 return UMC;
4326 else
4327 return MC_NONE;
4328 }
4329
4330 /* On BE2/BE3 FW does not suggest the supported limits */
BEx_get_resources(struct be_adapter * adapter,struct be_resources * res)4331 static void BEx_get_resources(struct be_adapter *adapter,
4332 struct be_resources *res)
4333 {
4334 bool use_sriov = adapter->num_vfs ? 1 : 0;
4335
4336 if (be_physfn(adapter))
4337 res->max_uc_mac = BE_UC_PMAC_COUNT;
4338 else
4339 res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4340
4341 adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4342
4343 if (be_is_mc(adapter)) {
4344 /* Assuming that there are 4 channels per port,
4345 * when multi-channel is enabled
4346 */
4347 if (be_is_qnq_mode(adapter))
4348 res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4349 else
4350 /* In a non-qnq multichannel mode, the pvid
4351 * takes up one vlan entry
4352 */
4353 res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4354 } else {
4355 res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4356 }
4357
4358 res->max_mcast_mac = BE_MAX_MC;
4359
4360 /* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4361 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4362 * *only* if it is RSS-capable.
4363 */
4364 if (BE2_chip(adapter) || use_sriov || (adapter->port_num > 1) ||
4365 be_virtfn(adapter) ||
4366 (be_is_mc(adapter) &&
4367 !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4368 res->max_tx_qs = 1;
4369 } else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4370 struct be_resources super_nic_res = {0};
4371
4372 /* On a SuperNIC profile, the driver needs to use the
4373 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4374 */
4375 be_cmd_get_profile_config(adapter, &super_nic_res, NULL,
4376 ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,
4377 0);
4378 /* Some old versions of BE3 FW don't report max_tx_qs value */
4379 res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4380 } else {
4381 res->max_tx_qs = BE3_MAX_TX_QS;
4382 }
4383
4384 if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4385 !use_sriov && be_physfn(adapter))
4386 res->max_rss_qs = (adapter->be3_native) ?
4387 BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4388 res->max_rx_qs = res->max_rss_qs + 1;
4389
4390 if (be_physfn(adapter))
4391 res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4392 BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4393 else
4394 res->max_evt_qs = 1;
4395
4396 res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4397 res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4398 if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4399 res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4400 }
4401
be_setup_init(struct be_adapter * adapter)4402 static void be_setup_init(struct be_adapter *adapter)
4403 {
4404 adapter->vlan_prio_bmap = 0xff;
4405 adapter->phy.link_speed = -1;
4406 adapter->if_handle = -1;
4407 adapter->be3_native = false;
4408 adapter->if_flags = 0;
4409 adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4410 if (be_physfn(adapter))
4411 adapter->cmd_privileges = MAX_PRIVILEGES;
4412 else
4413 adapter->cmd_privileges = MIN_PRIVILEGES;
4414 }
4415
4416 /* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.
4417 * However, this HW limitation is not exposed to the host via any SLI cmd.
4418 * As a result, in the case of SRIOV and in particular multi-partition configs
4419 * the driver needs to calculate a proportional share of RSS Tables per PF-pool
4420 * for distribution between the VFs. This self-imposed limit will determine the
4421 * no: of VFs for which RSS can be enabled.
4422 */
be_calculate_pf_pool_rss_tables(struct be_adapter * adapter)4423 static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)
4424 {
4425 struct be_port_resources port_res = {0};
4426 u8 rss_tables_on_port;
4427 u16 max_vfs = be_max_vfs(adapter);
4428
4429 be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,
4430 RESOURCE_LIMITS, 0);
4431
4432 rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;
4433
4434 /* Each PF Pool's RSS Tables limit =
4435 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port
4436 */
4437 adapter->pool_res.max_rss_tables =
4438 max_vfs * rss_tables_on_port / port_res.max_vfs;
4439 }
4440
be_get_sriov_config(struct be_adapter * adapter)4441 static int be_get_sriov_config(struct be_adapter *adapter)
4442 {
4443 struct be_resources res = {0};
4444 int max_vfs, old_vfs;
4445
4446 be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,
4447 RESOURCE_LIMITS, 0);
4448
4449 /* Some old versions of BE3 FW don't report max_vfs value */
4450 if (BE3_chip(adapter) && !res.max_vfs) {
4451 max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4452 res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4453 }
4454
4455 adapter->pool_res = res;
4456
4457 /* If during previous unload of the driver, the VFs were not disabled,
4458 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4459 * Instead use the TotalVFs value stored in the pci-dev struct.
4460 */
4461 old_vfs = pci_num_vf(adapter->pdev);
4462 if (old_vfs) {
4463 dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4464 old_vfs);
4465
4466 adapter->pool_res.max_vfs =
4467 pci_sriov_get_totalvfs(adapter->pdev);
4468 adapter->num_vfs = old_vfs;
4469 }
4470
4471 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4472 be_calculate_pf_pool_rss_tables(adapter);
4473 dev_info(&adapter->pdev->dev,
4474 "RSS can be enabled for all VFs if num_vfs <= %d\n",
4475 be_max_pf_pool_rss_tables(adapter));
4476 }
4477 return 0;
4478 }
4479
be_alloc_sriov_res(struct be_adapter * adapter)4480 static void be_alloc_sriov_res(struct be_adapter *adapter)
4481 {
4482 int old_vfs = pci_num_vf(adapter->pdev);
4483 struct be_resources vft_res = {0};
4484 int status;
4485
4486 be_get_sriov_config(adapter);
4487
4488 if (!old_vfs)
4489 pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4490
4491 /* When the HW is in SRIOV capable configuration, the PF-pool
4492 * resources are given to PF during driver load, if there are no
4493 * old VFs. This facility is not available in BE3 FW.
4494 * Also, this is done by FW in Lancer chip.
4495 */
4496 if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4497 be_calculate_vf_res(adapter, 0, &vft_res);
4498 status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4499 &vft_res);
4500 if (status)
4501 dev_err(&adapter->pdev->dev,
4502 "Failed to optimize SRIOV resources\n");
4503 }
4504 }
4505
be_get_resources(struct be_adapter * adapter)4506 static int be_get_resources(struct be_adapter *adapter)
4507 {
4508 struct device *dev = &adapter->pdev->dev;
4509 struct be_resources res = {0};
4510 int status;
4511
4512 /* For Lancer, SH etc read per-function resource limits from FW.
4513 * GET_FUNC_CONFIG returns per function guaranteed limits.
4514 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4515 */
4516 if (BEx_chip(adapter)) {
4517 BEx_get_resources(adapter, &res);
4518 } else {
4519 status = be_cmd_get_func_config(adapter, &res);
4520 if (status)
4521 return status;
4522
4523 /* If a default RXQ must be created, we'll use up one RSSQ*/
4524 if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4525 !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4526 res.max_rss_qs -= 1;
4527 }
4528
4529 /* If RoCE is supported stash away half the EQs for RoCE */
4530 res.max_nic_evt_qs = be_roce_supported(adapter) ?
4531 res.max_evt_qs / 2 : res.max_evt_qs;
4532 adapter->res = res;
4533
4534 /* If FW supports RSS default queue, then skip creating non-RSS
4535 * queue for non-IP traffic.
4536 */
4537 adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4538 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4539
4540 dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4541 be_max_txqs(adapter), be_max_rxqs(adapter),
4542 be_max_rss(adapter), be_max_nic_eqs(adapter),
4543 be_max_vfs(adapter));
4544 dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4545 be_max_uc(adapter), be_max_mc(adapter),
4546 be_max_vlans(adapter));
4547
4548 /* Ensure RX and TX queues are created in pairs at init time */
4549 adapter->cfg_num_rx_irqs =
4550 min_t(u16, netif_get_num_default_rss_queues(),
4551 be_max_qp_irqs(adapter));
4552 adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;
4553 return 0;
4554 }
4555
be_get_config(struct be_adapter * adapter)4556 static int be_get_config(struct be_adapter *adapter)
4557 {
4558 int status, level;
4559 u16 profile_id;
4560
4561 status = be_cmd_get_cntl_attributes(adapter);
4562 if (status)
4563 return status;
4564
4565 status = be_cmd_query_fw_cfg(adapter);
4566 if (status)
4567 return status;
4568
4569 if (!lancer_chip(adapter) && be_physfn(adapter))
4570 be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4571
4572 if (BEx_chip(adapter)) {
4573 level = be_cmd_get_fw_log_level(adapter);
4574 adapter->msg_enable =
4575 level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4576 }
4577
4578 be_cmd_get_acpi_wol_cap(adapter);
4579 pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);
4580 pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);
4581
4582 be_cmd_query_port_name(adapter);
4583
4584 if (be_physfn(adapter)) {
4585 status = be_cmd_get_active_profile(adapter, &profile_id);
4586 if (!status)
4587 dev_info(&adapter->pdev->dev,
4588 "Using profile 0x%x\n", profile_id);
4589 }
4590
4591 return 0;
4592 }
4593
be_mac_setup(struct be_adapter * adapter)4594 static int be_mac_setup(struct be_adapter *adapter)
4595 {
4596 u8 mac[ETH_ALEN];
4597 int status;
4598
4599 if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4600 status = be_cmd_get_perm_mac(adapter, mac);
4601 if (status)
4602 return status;
4603
4604 eth_hw_addr_set(adapter->netdev, mac);
4605 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4606
4607 /* Initial MAC for BE3 VFs is already programmed by PF */
4608 if (BEx_chip(adapter) && be_virtfn(adapter))
4609 memcpy(adapter->dev_mac, mac, ETH_ALEN);
4610 }
4611
4612 return 0;
4613 }
4614
be_schedule_worker(struct be_adapter * adapter)4615 static void be_schedule_worker(struct be_adapter *adapter)
4616 {
4617 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
4618 adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4619 }
4620
be_destroy_err_recovery_workq(void)4621 static void be_destroy_err_recovery_workq(void)
4622 {
4623 if (!be_err_recovery_workq)
4624 return;
4625
4626 destroy_workqueue(be_err_recovery_workq);
4627 be_err_recovery_workq = NULL;
4628 }
4629
be_schedule_err_detection(struct be_adapter * adapter,u32 delay)4630 static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4631 {
4632 struct be_error_recovery *err_rec = &adapter->error_recovery;
4633
4634 if (!be_err_recovery_workq)
4635 return;
4636
4637 queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work,
4638 msecs_to_jiffies(delay));
4639 adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4640 }
4641
be_setup_queues(struct be_adapter * adapter)4642 static int be_setup_queues(struct be_adapter *adapter)
4643 {
4644 struct net_device *netdev = adapter->netdev;
4645 int status;
4646
4647 status = be_evt_queues_create(adapter);
4648 if (status)
4649 goto err;
4650
4651 status = be_tx_qs_create(adapter);
4652 if (status)
4653 goto err;
4654
4655 status = be_rx_cqs_create(adapter);
4656 if (status)
4657 goto err;
4658
4659 status = be_mcc_queues_create(adapter);
4660 if (status)
4661 goto err;
4662
4663 status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4664 if (status)
4665 goto err;
4666
4667 status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4668 if (status)
4669 goto err;
4670
4671 return 0;
4672 err:
4673 dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4674 return status;
4675 }
4676
be_if_create(struct be_adapter * adapter)4677 static int be_if_create(struct be_adapter *adapter)
4678 {
4679 u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4680 u32 cap_flags = be_if_cap_flags(adapter);
4681
4682 /* alloc required memory for other filtering fields */
4683 adapter->pmac_id = kcalloc(be_max_uc(adapter),
4684 sizeof(*adapter->pmac_id), GFP_KERNEL);
4685 if (!adapter->pmac_id)
4686 return -ENOMEM;
4687
4688 adapter->mc_list = kzalloc_objs(*adapter->mc_list, be_max_mc(adapter),
4689 GFP_KERNEL);
4690 if (!adapter->mc_list)
4691 return -ENOMEM;
4692
4693 adapter->uc_list = kzalloc_objs(*adapter->uc_list, be_max_uc(adapter),
4694 GFP_KERNEL);
4695 if (!adapter->uc_list)
4696 return -ENOMEM;
4697
4698 if (adapter->cfg_num_rx_irqs == 1)
4699 cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4700
4701 en_flags &= cap_flags;
4702 /* will enable all the needed filter flags in be_open() */
4703 return be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4704 &adapter->if_handle, 0);
4705 }
4706
be_update_queues(struct be_adapter * adapter)4707 int be_update_queues(struct be_adapter *adapter)
4708 {
4709 struct net_device *netdev = adapter->netdev;
4710 int status;
4711
4712 if (netif_running(netdev)) {
4713 /* be_tx_timeout() must not run concurrently with this
4714 * function, synchronize with an already-running dev_watchdog
4715 */
4716 netif_tx_lock_bh(netdev);
4717 /* device cannot transmit now, avoid dev_watchdog timeouts */
4718 netif_carrier_off(netdev);
4719 netif_tx_unlock_bh(netdev);
4720
4721 be_close(netdev);
4722 }
4723
4724 be_cancel_worker(adapter);
4725
4726 /* If any vectors have been shared with RoCE we cannot re-program
4727 * the MSIx table.
4728 */
4729 if (!adapter->num_msix_roce_vec)
4730 be_msix_disable(adapter);
4731
4732 be_clear_queues(adapter);
4733 status = be_cmd_if_destroy(adapter, adapter->if_handle, 0);
4734 if (status)
4735 return status;
4736
4737 if (!msix_enabled(adapter)) {
4738 status = be_msix_enable(adapter);
4739 if (status)
4740 return status;
4741 }
4742
4743 status = be_if_create(adapter);
4744 if (status)
4745 return status;
4746
4747 status = be_setup_queues(adapter);
4748 if (status)
4749 return status;
4750
4751 be_schedule_worker(adapter);
4752
4753 /* The IF was destroyed and re-created. We need to clear
4754 * all promiscuous flags valid for the destroyed IF.
4755 * Without this promisc mode is not restored during
4756 * be_open() because the driver thinks that it is
4757 * already enabled in HW.
4758 */
4759 adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS;
4760
4761 if (netif_running(netdev))
4762 status = be_open(netdev);
4763
4764 return status;
4765 }
4766
fw_major_num(const char * fw_ver)4767 static inline int fw_major_num(const char *fw_ver)
4768 {
4769 int fw_major = 0, i;
4770
4771 i = sscanf(fw_ver, "%d.", &fw_major);
4772 if (i != 1)
4773 return 0;
4774
4775 return fw_major;
4776 }
4777
4778 /* If it is error recovery, FLR the PF
4779 * Else if any VFs are already enabled don't FLR the PF
4780 */
be_reset_required(struct be_adapter * adapter)4781 static bool be_reset_required(struct be_adapter *adapter)
4782 {
4783 if (be_error_recovering(adapter))
4784 return true;
4785 else
4786 return pci_num_vf(adapter->pdev) == 0;
4787 }
4788
4789 /* Wait for the FW to be ready and perform the required initialization */
be_func_init(struct be_adapter * adapter)4790 static int be_func_init(struct be_adapter *adapter)
4791 {
4792 int status;
4793
4794 status = be_fw_wait_ready(adapter);
4795 if (status)
4796 return status;
4797
4798 /* FW is now ready; clear errors to allow cmds/doorbell */
4799 be_clear_error(adapter, BE_CLEAR_ALL);
4800
4801 if (be_reset_required(adapter)) {
4802 status = be_cmd_reset_function(adapter);
4803 if (status)
4804 return status;
4805
4806 /* Wait for interrupts to quiesce after an FLR */
4807 msleep(100);
4808 }
4809
4810 /* Tell FW we're ready to fire cmds */
4811 status = be_cmd_fw_init(adapter);
4812 if (status)
4813 return status;
4814
4815 /* Allow interrupts for other ULPs running on NIC function */
4816 be_intr_set(adapter, true);
4817
4818 return 0;
4819 }
4820
be_setup(struct be_adapter * adapter)4821 static int be_setup(struct be_adapter *adapter)
4822 {
4823 struct device *dev = &adapter->pdev->dev;
4824 int status;
4825
4826 status = be_func_init(adapter);
4827 if (status)
4828 return status;
4829
4830 be_setup_init(adapter);
4831
4832 if (!lancer_chip(adapter))
4833 be_cmd_req_native_mode(adapter);
4834
4835 /* invoke this cmd first to get pf_num and vf_num which are needed
4836 * for issuing profile related cmds
4837 */
4838 if (!BEx_chip(adapter)) {
4839 status = be_cmd_get_func_config(adapter, NULL);
4840 if (status)
4841 return status;
4842 }
4843
4844 status = be_get_config(adapter);
4845 if (status)
4846 goto err;
4847
4848 if (!BE2_chip(adapter) && be_physfn(adapter))
4849 be_alloc_sriov_res(adapter);
4850
4851 status = be_get_resources(adapter);
4852 if (status)
4853 goto err;
4854
4855 status = be_msix_enable(adapter);
4856 if (status)
4857 goto err;
4858
4859 /* will enable all the needed filter flags in be_open() */
4860 status = be_if_create(adapter);
4861 if (status)
4862 goto err;
4863
4864 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4865 rtnl_lock();
4866 status = be_setup_queues(adapter);
4867 rtnl_unlock();
4868 if (status)
4869 goto err;
4870
4871 be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4872
4873 status = be_mac_setup(adapter);
4874 if (status)
4875 goto err;
4876
4877 be_cmd_get_fw_ver(adapter);
4878 dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4879
4880 if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4881 dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4882 adapter->fw_ver);
4883 dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4884 }
4885
4886 status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4887 adapter->rx_fc);
4888 if (status)
4889 be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4890 &adapter->rx_fc);
4891
4892 dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4893 adapter->tx_fc, adapter->rx_fc);
4894
4895 if (be_physfn(adapter))
4896 be_cmd_set_logical_link_config(adapter,
4897 IFLA_VF_LINK_STATE_AUTO, 0);
4898
4899 /* BE3 EVB echoes broadcast/multicast packets back to PF's vport
4900 * confusing a linux bridge or OVS that it might be connected to.
4901 * Set the EVB to PASSTHRU mode which effectively disables the EVB
4902 * when SRIOV is not enabled.
4903 */
4904 if (BE3_chip(adapter))
4905 be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,
4906 PORT_FWD_TYPE_PASSTHRU, 0);
4907
4908 if (adapter->num_vfs)
4909 be_vf_setup(adapter);
4910
4911 status = be_cmd_get_phy_info(adapter);
4912 if (!status && be_pause_supported(adapter))
4913 adapter->phy.fc_autoneg = 1;
4914
4915 if (be_physfn(adapter) && !lancer_chip(adapter))
4916 be_cmd_set_features(adapter);
4917
4918 be_schedule_worker(adapter);
4919 adapter->flags |= BE_FLAGS_SETUP_DONE;
4920 return 0;
4921 err:
4922 be_clear(adapter);
4923 return status;
4924 }
4925
4926 #ifdef CONFIG_NET_POLL_CONTROLLER
be_netpoll(struct net_device * netdev)4927 static void be_netpoll(struct net_device *netdev)
4928 {
4929 struct be_adapter *adapter = netdev_priv(netdev);
4930 struct be_eq_obj *eqo;
4931 int i;
4932
4933 for_all_evt_queues(adapter, eqo, i) {
4934 be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4935 napi_schedule(&eqo->napi);
4936 }
4937 }
4938 #endif
4939
be_load_fw(struct be_adapter * adapter,u8 * fw_file)4940 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4941 {
4942 const struct firmware *fw;
4943 int status;
4944
4945 if (!netif_running(adapter->netdev)) {
4946 dev_err(&adapter->pdev->dev,
4947 "Firmware load not allowed (interface is down)\n");
4948 return -ENETDOWN;
4949 }
4950
4951 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4952 if (status)
4953 goto fw_exit;
4954
4955 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4956
4957 if (lancer_chip(adapter))
4958 status = lancer_fw_download(adapter, fw);
4959 else
4960 status = be_fw_download(adapter, fw);
4961
4962 if (!status)
4963 be_cmd_get_fw_ver(adapter);
4964
4965 fw_exit:
4966 release_firmware(fw);
4967 return status;
4968 }
4969
be_ndo_bridge_setlink(struct net_device * dev,struct nlmsghdr * nlh,u16 flags,struct netlink_ext_ack * extack)4970 static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4971 u16 flags, struct netlink_ext_ack *extack)
4972 {
4973 struct be_adapter *adapter = netdev_priv(dev);
4974 struct nlattr *attr, *br_spec;
4975 int rem;
4976 int status = 0;
4977 u16 mode = 0;
4978
4979 if (!sriov_enabled(adapter))
4980 return -EOPNOTSUPP;
4981
4982 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4983 if (!br_spec)
4984 return -EINVAL;
4985
4986 nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) {
4987 mode = nla_get_u16(attr);
4988 if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4989 return -EOPNOTSUPP;
4990
4991 if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4992 return -EINVAL;
4993
4994 status = be_cmd_set_hsw_config(adapter, 0, 0,
4995 adapter->if_handle,
4996 mode == BRIDGE_MODE_VEPA ?
4997 PORT_FWD_TYPE_VEPA :
4998 PORT_FWD_TYPE_VEB, 0);
4999 if (status)
5000 goto err;
5001
5002 dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
5003 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5004
5005 return status;
5006 }
5007 err:
5008 dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
5009 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5010
5011 return status;
5012 }
5013
be_ndo_bridge_getlink(struct sk_buff * skb,u32 pid,u32 seq,struct net_device * dev,u32 filter_mask,int nlflags)5014 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
5015 struct net_device *dev, u32 filter_mask,
5016 int nlflags)
5017 {
5018 struct be_adapter *adapter = netdev_priv(dev);
5019 int status = 0;
5020 u8 hsw_mode;
5021
5022 /* BE and Lancer chips support VEB mode only */
5023 if (BEx_chip(adapter) || lancer_chip(adapter)) {
5024 /* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
5025 if (!pci_sriov_get_totalvfs(adapter->pdev))
5026 return 0;
5027 hsw_mode = PORT_FWD_TYPE_VEB;
5028 } else {
5029 status = be_cmd_get_hsw_config(adapter, NULL, 0,
5030 adapter->if_handle, &hsw_mode,
5031 NULL);
5032 if (status)
5033 return 0;
5034
5035 if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
5036 return 0;
5037 }
5038
5039 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
5040 hsw_mode == PORT_FWD_TYPE_VEPA ?
5041 BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
5042 0, 0, nlflags, filter_mask, NULL);
5043 }
5044
be_alloc_work(struct be_adapter * adapter,void (* func)(struct work_struct *))5045 static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter,
5046 void (*func)(struct work_struct *))
5047 {
5048 struct be_cmd_work *work;
5049
5050 work = kzalloc_obj(*work, GFP_ATOMIC);
5051 if (!work) {
5052 dev_err(&adapter->pdev->dev,
5053 "be_work memory allocation failed\n");
5054 return NULL;
5055 }
5056
5057 INIT_WORK(&work->work, func);
5058 work->adapter = adapter;
5059 return work;
5060 }
5061
be_features_check(struct sk_buff * skb,struct net_device * dev,netdev_features_t features)5062 static netdev_features_t be_features_check(struct sk_buff *skb,
5063 struct net_device *dev,
5064 netdev_features_t features)
5065 {
5066 struct be_adapter *adapter = netdev_priv(dev);
5067 u8 l4_hdr = 0;
5068
5069 if (skb_is_gso(skb)) {
5070 /* IPv6 TSO requests with extension hdrs are a problem
5071 * to Lancer and BE3 HW. Disable TSO6 feature.
5072 */
5073 if (!skyhawk_chip(adapter) && is_ipv6_ext_hdr(skb))
5074 features &= ~NETIF_F_TSO6;
5075
5076 /* Lancer cannot handle the packet with MSS less than 256.
5077 * Also it can't handle a TSO packet with a single segment
5078 * Disable the GSO support in such cases
5079 */
5080 if (lancer_chip(adapter) &&
5081 (skb_shinfo(skb)->gso_size < 256 ||
5082 skb_shinfo(skb)->gso_segs == 1))
5083 features &= ~NETIF_F_GSO_MASK;
5084 }
5085
5086 /* The code below restricts offload features for some tunneled and
5087 * Q-in-Q packets.
5088 * Offload features for normal (non tunnel) packets are unchanged.
5089 */
5090 features = vlan_features_check(skb, features);
5091 if (!skb->encapsulation ||
5092 !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
5093 return features;
5094
5095 /* It's an encapsulated packet and VxLAN offloads are enabled. We
5096 * should disable tunnel offload features if it's not a VxLAN packet,
5097 * as tunnel offloads have been enabled only for VxLAN. This is done to
5098 * allow other tunneled traffic like GRE work fine while VxLAN
5099 * offloads are configured in Skyhawk-R.
5100 */
5101 switch (vlan_get_protocol(skb)) {
5102 case htons(ETH_P_IP):
5103 l4_hdr = ip_hdr(skb)->protocol;
5104 break;
5105 case htons(ETH_P_IPV6):
5106 l4_hdr = ipv6_hdr(skb)->nexthdr;
5107 break;
5108 default:
5109 return features;
5110 }
5111
5112 if (l4_hdr != IPPROTO_UDP ||
5113 skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
5114 skb->inner_protocol != htons(ETH_P_TEB) ||
5115 skb_inner_mac_header(skb) - skb_transport_header(skb) !=
5116 sizeof(struct udphdr) + sizeof(struct vxlanhdr) ||
5117 !adapter->vxlan_port ||
5118 udp_hdr(skb)->dest != adapter->vxlan_port)
5119 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
5120
5121 return features;
5122 }
5123
be_get_phys_port_id(struct net_device * dev,struct netdev_phys_item_id * ppid)5124 static int be_get_phys_port_id(struct net_device *dev,
5125 struct netdev_phys_item_id *ppid)
5126 {
5127 int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
5128 struct be_adapter *adapter = netdev_priv(dev);
5129 u8 *id;
5130
5131 if (MAX_PHYS_ITEM_ID_LEN < id_len)
5132 return -ENOSPC;
5133
5134 ppid->id[0] = adapter->hba_port_num + 1;
5135 id = &ppid->id[1];
5136 for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
5137 i--, id += CNTL_SERIAL_NUM_WORD_SZ)
5138 memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
5139
5140 ppid->id_len = id_len;
5141
5142 return 0;
5143 }
5144
be_set_rx_mode(struct net_device * dev)5145 static void be_set_rx_mode(struct net_device *dev)
5146 {
5147 struct be_adapter *adapter = netdev_priv(dev);
5148 struct be_cmd_work *work;
5149
5150 work = be_alloc_work(adapter, be_work_set_rx_mode);
5151 if (work)
5152 queue_work(be_wq, &work->work);
5153 }
5154
5155 static const struct net_device_ops be_netdev_ops = {
5156 .ndo_open = be_open,
5157 .ndo_stop = be_close,
5158 .ndo_start_xmit = be_xmit,
5159 .ndo_set_rx_mode = be_set_rx_mode,
5160 .ndo_set_mac_address = be_mac_addr_set,
5161 .ndo_get_stats64 = be_get_stats64,
5162 .ndo_validate_addr = eth_validate_addr,
5163 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
5164 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
5165 .ndo_set_vf_mac = be_set_vf_mac,
5166 .ndo_set_vf_vlan = be_set_vf_vlan,
5167 .ndo_set_vf_rate = be_set_vf_tx_rate,
5168 .ndo_get_vf_config = be_get_vf_config,
5169 .ndo_set_vf_link_state = be_set_vf_link_state,
5170 .ndo_set_vf_spoofchk = be_set_vf_spoofchk,
5171 .ndo_tx_timeout = be_tx_timeout,
5172 #ifdef CONFIG_NET_POLL_CONTROLLER
5173 .ndo_poll_controller = be_netpoll,
5174 #endif
5175 .ndo_bridge_setlink = be_ndo_bridge_setlink,
5176 .ndo_bridge_getlink = be_ndo_bridge_getlink,
5177 .ndo_features_check = be_features_check,
5178 .ndo_get_phys_port_id = be_get_phys_port_id,
5179 };
5180
be_netdev_init(struct net_device * netdev)5181 static void be_netdev_init(struct net_device *netdev)
5182 {
5183 struct be_adapter *adapter = netdev_priv(netdev);
5184
5185 netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5186 NETIF_F_GSO_UDP_TUNNEL |
5187 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
5188 NETIF_F_HW_VLAN_CTAG_TX;
5189 if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
5190 netdev->hw_features |= NETIF_F_RXHASH;
5191
5192 netdev->features |= netdev->hw_features |
5193 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER |
5194 NETIF_F_HIGHDMA;
5195
5196 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5197 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
5198
5199 netdev->priv_flags |= IFF_UNICAST_FLT;
5200
5201 netdev->flags |= IFF_MULTICAST;
5202
5203 netif_set_tso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
5204
5205 netdev->netdev_ops = &be_netdev_ops;
5206
5207 netdev->ethtool_ops = &be_ethtool_ops;
5208
5209 if (!lancer_chip(adapter) && !BEx_chip(adapter) && !be_is_mc(adapter))
5210 netdev->udp_tunnel_nic_info = &be_udp_tunnels;
5211
5212 /* MTU range: 256 - 9000 */
5213 netdev->min_mtu = BE_MIN_MTU;
5214 netdev->max_mtu = BE_MAX_MTU;
5215 }
5216
be_cleanup(struct be_adapter * adapter)5217 static void be_cleanup(struct be_adapter *adapter)
5218 {
5219 struct net_device *netdev = adapter->netdev;
5220
5221 rtnl_lock();
5222 netif_device_detach(netdev);
5223 if (netif_running(netdev))
5224 be_close(netdev);
5225 rtnl_unlock();
5226
5227 be_clear(adapter);
5228 }
5229
be_resume(struct be_adapter * adapter)5230 static int be_resume(struct be_adapter *adapter)
5231 {
5232 struct net_device *netdev = adapter->netdev;
5233 int status;
5234
5235 status = be_setup(adapter);
5236 if (status)
5237 return status;
5238
5239 rtnl_lock();
5240 if (netif_running(netdev))
5241 status = be_open(netdev);
5242 rtnl_unlock();
5243
5244 if (status)
5245 return status;
5246
5247 netif_device_attach(netdev);
5248
5249 return 0;
5250 }
5251
be_soft_reset(struct be_adapter * adapter)5252 static void be_soft_reset(struct be_adapter *adapter)
5253 {
5254 u32 val;
5255
5256 dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n");
5257 val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5258 val |= SLIPORT_SOFTRESET_SR_MASK;
5259 iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5260 }
5261
be_err_is_recoverable(struct be_adapter * adapter)5262 static bool be_err_is_recoverable(struct be_adapter *adapter)
5263 {
5264 struct be_error_recovery *err_rec = &adapter->error_recovery;
5265 unsigned long initial_idle_time =
5266 msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME);
5267 unsigned long recovery_interval =
5268 msecs_to_jiffies(ERR_RECOVERY_INTERVAL);
5269 u16 ue_err_code;
5270 u32 val;
5271
5272 val = be_POST_stage_get(adapter);
5273 if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR)
5274 return false;
5275 ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK;
5276 if (ue_err_code == 0)
5277 return false;
5278
5279 dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n",
5280 ue_err_code);
5281
5282 if (time_before_eq(jiffies - err_rec->probe_time, initial_idle_time)) {
5283 dev_err(&adapter->pdev->dev,
5284 "Cannot recover within %lu sec from driver load\n",
5285 jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC);
5286 return false;
5287 }
5288
5289 if (err_rec->last_recovery_time && time_before_eq(
5290 jiffies - err_rec->last_recovery_time, recovery_interval)) {
5291 dev_err(&adapter->pdev->dev,
5292 "Cannot recover within %lu sec from last recovery\n",
5293 jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC);
5294 return false;
5295 }
5296
5297 if (ue_err_code == err_rec->last_err_code) {
5298 dev_err(&adapter->pdev->dev,
5299 "Cannot recover from a consecutive TPE error\n");
5300 return false;
5301 }
5302
5303 err_rec->last_recovery_time = jiffies;
5304 err_rec->last_err_code = ue_err_code;
5305 return true;
5306 }
5307
be_tpe_recover(struct be_adapter * adapter)5308 static int be_tpe_recover(struct be_adapter *adapter)
5309 {
5310 struct be_error_recovery *err_rec = &adapter->error_recovery;
5311 int status = -EAGAIN;
5312 u32 val;
5313
5314 switch (err_rec->recovery_state) {
5315 case ERR_RECOVERY_ST_NONE:
5316 err_rec->recovery_state = ERR_RECOVERY_ST_DETECT;
5317 err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION;
5318 break;
5319
5320 case ERR_RECOVERY_ST_DETECT:
5321 val = be_POST_stage_get(adapter);
5322 if ((val & POST_STAGE_RECOVERABLE_ERR) !=
5323 POST_STAGE_RECOVERABLE_ERR) {
5324 dev_err(&adapter->pdev->dev,
5325 "Unrecoverable HW error detected: 0x%x\n", val);
5326 status = -EINVAL;
5327 err_rec->resched_delay = 0;
5328 break;
5329 }
5330
5331 dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n");
5332
5333 /* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR
5334 * milliseconds before it checks for final error status in
5335 * SLIPORT_SEMAPHORE to determine if recovery criteria is met.
5336 * If it does, then PF0 initiates a Soft Reset.
5337 */
5338 if (adapter->pf_num == 0) {
5339 err_rec->recovery_state = ERR_RECOVERY_ST_RESET;
5340 err_rec->resched_delay = err_rec->ue_to_reset_time -
5341 ERR_RECOVERY_UE_DETECT_DURATION;
5342 break;
5343 }
5344
5345 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5346 err_rec->resched_delay = err_rec->ue_to_poll_time -
5347 ERR_RECOVERY_UE_DETECT_DURATION;
5348 break;
5349
5350 case ERR_RECOVERY_ST_RESET:
5351 if (!be_err_is_recoverable(adapter)) {
5352 dev_err(&adapter->pdev->dev,
5353 "Failed to meet recovery criteria\n");
5354 status = -EIO;
5355 err_rec->resched_delay = 0;
5356 break;
5357 }
5358 be_soft_reset(adapter);
5359 err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5360 err_rec->resched_delay = err_rec->ue_to_poll_time -
5361 err_rec->ue_to_reset_time;
5362 break;
5363
5364 case ERR_RECOVERY_ST_PRE_POLL:
5365 err_rec->recovery_state = ERR_RECOVERY_ST_REINIT;
5366 err_rec->resched_delay = 0;
5367 status = 0; /* done */
5368 break;
5369
5370 default:
5371 status = -EINVAL;
5372 err_rec->resched_delay = 0;
5373 break;
5374 }
5375
5376 return status;
5377 }
5378
be_err_recover(struct be_adapter * adapter)5379 static int be_err_recover(struct be_adapter *adapter)
5380 {
5381 int status;
5382
5383 if (!lancer_chip(adapter)) {
5384 if (!adapter->error_recovery.recovery_supported ||
5385 adapter->priv_flags & BE_DISABLE_TPE_RECOVERY)
5386 return -EIO;
5387 status = be_tpe_recover(adapter);
5388 if (status)
5389 goto err;
5390 }
5391
5392 /* Wait for adapter to reach quiescent state before
5393 * destroying queues
5394 */
5395 status = be_fw_wait_ready(adapter);
5396 if (status)
5397 goto err;
5398
5399 adapter->flags |= BE_FLAGS_TRY_RECOVERY;
5400
5401 be_cleanup(adapter);
5402
5403 status = be_resume(adapter);
5404 if (status)
5405 goto err;
5406
5407 adapter->flags &= ~BE_FLAGS_TRY_RECOVERY;
5408
5409 err:
5410 return status;
5411 }
5412
be_err_detection_task(struct work_struct * work)5413 static void be_err_detection_task(struct work_struct *work)
5414 {
5415 struct be_error_recovery *err_rec =
5416 container_of(work, struct be_error_recovery,
5417 err_detection_work.work);
5418 struct be_adapter *adapter =
5419 container_of(err_rec, struct be_adapter,
5420 error_recovery);
5421 u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY;
5422 struct device *dev = &adapter->pdev->dev;
5423 int recovery_status;
5424
5425 be_detect_error(adapter);
5426 if (!be_check_error(adapter, BE_ERROR_HW))
5427 goto reschedule_task;
5428
5429 recovery_status = be_err_recover(adapter);
5430 if (!recovery_status) {
5431 err_rec->recovery_retries = 0;
5432 err_rec->recovery_state = ERR_RECOVERY_ST_NONE;
5433 dev_info(dev, "Adapter recovery successful\n");
5434 goto reschedule_task;
5435 } else if (!lancer_chip(adapter) && err_rec->resched_delay) {
5436 /* BEx/SH recovery state machine */
5437 if (adapter->pf_num == 0 &&
5438 err_rec->recovery_state > ERR_RECOVERY_ST_DETECT)
5439 dev_err(&adapter->pdev->dev,
5440 "Adapter recovery in progress\n");
5441 resched_delay = err_rec->resched_delay;
5442 goto reschedule_task;
5443 } else if (lancer_chip(adapter) && be_virtfn(adapter)) {
5444 /* For VFs, check if PF have allocated resources
5445 * every second.
5446 */
5447 dev_err(dev, "Re-trying adapter recovery\n");
5448 goto reschedule_task;
5449 } else if (lancer_chip(adapter) && err_rec->recovery_retries++ <
5450 ERR_RECOVERY_MAX_RETRY_COUNT) {
5451 /* In case of another error during recovery, it takes 30 sec
5452 * for adapter to come out of error. Retry error recovery after
5453 * this time interval.
5454 */
5455 dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
5456 resched_delay = ERR_RECOVERY_RETRY_DELAY;
5457 goto reschedule_task;
5458 } else {
5459 dev_err(dev, "Adapter recovery failed\n");
5460 dev_err(dev, "Please reboot server to recover\n");
5461 }
5462
5463 return;
5464
5465 reschedule_task:
5466 be_schedule_err_detection(adapter, resched_delay);
5467 }
5468
be_log_sfp_info(struct be_adapter * adapter)5469 static void be_log_sfp_info(struct be_adapter *adapter)
5470 {
5471 int status;
5472
5473 status = be_cmd_query_sfp_info(adapter);
5474 if (!status) {
5475 dev_err(&adapter->pdev->dev,
5476 "Port %c: %s Vendor: %s part no: %s",
5477 adapter->port_name,
5478 be_misconfig_evt_port_state[adapter->phy_state],
5479 adapter->phy.vendor_name,
5480 adapter->phy.vendor_pn);
5481 }
5482 adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
5483 }
5484
be_worker(struct work_struct * work)5485 static void be_worker(struct work_struct *work)
5486 {
5487 struct be_adapter *adapter =
5488 container_of(work, struct be_adapter, work.work);
5489 struct be_rx_obj *rxo;
5490 int i;
5491
5492 if (be_physfn(adapter) &&
5493 MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5494 be_cmd_get_die_temperature(adapter);
5495
5496 /* when interrupts are not yet enabled, just reap any pending
5497 * mcc completions
5498 */
5499 if (!netif_running(adapter->netdev)) {
5500 local_bh_disable();
5501 be_process_mcc(adapter);
5502 local_bh_enable();
5503 goto reschedule;
5504 }
5505
5506 if (!adapter->stats_cmd_sent) {
5507 if (lancer_chip(adapter))
5508 lancer_cmd_get_pport_stats(adapter,
5509 &adapter->stats_cmd);
5510 else
5511 be_cmd_get_stats(adapter, &adapter->stats_cmd);
5512 }
5513
5514 for_all_rx_queues(adapter, rxo, i) {
5515 /* Replenish RX-queues starved due to memory
5516 * allocation failures.
5517 */
5518 if (rxo->rx_post_starved)
5519 be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5520 }
5521
5522 /* EQ-delay update for Skyhawk is done while notifying EQ */
5523 if (!skyhawk_chip(adapter))
5524 be_eqd_update(adapter, false);
5525
5526 if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5527 be_log_sfp_info(adapter);
5528
5529 reschedule:
5530 adapter->work_counter++;
5531 queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
5532 }
5533
be_unmap_pci_bars(struct be_adapter * adapter)5534 static void be_unmap_pci_bars(struct be_adapter *adapter)
5535 {
5536 if (adapter->csr)
5537 pci_iounmap(adapter->pdev, adapter->csr);
5538 if (adapter->db)
5539 pci_iounmap(adapter->pdev, adapter->db);
5540 if (adapter->pcicfg && adapter->pcicfg_mapped)
5541 pci_iounmap(adapter->pdev, adapter->pcicfg);
5542 }
5543
db_bar(struct be_adapter * adapter)5544 static int db_bar(struct be_adapter *adapter)
5545 {
5546 if (lancer_chip(adapter) || be_virtfn(adapter))
5547 return 0;
5548 else
5549 return 4;
5550 }
5551
be_roce_map_pci_bars(struct be_adapter * adapter)5552 static int be_roce_map_pci_bars(struct be_adapter *adapter)
5553 {
5554 if (skyhawk_chip(adapter)) {
5555 adapter->roce_db.size = 4096;
5556 adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5557 db_bar(adapter));
5558 adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5559 db_bar(adapter));
5560 }
5561 return 0;
5562 }
5563
be_map_pci_bars(struct be_adapter * adapter)5564 static int be_map_pci_bars(struct be_adapter *adapter)
5565 {
5566 struct pci_dev *pdev = adapter->pdev;
5567 u8 __iomem *addr;
5568 u32 sli_intf;
5569
5570 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5571 adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5572 SLI_INTF_FAMILY_SHIFT;
5573 adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5574
5575 if (BEx_chip(adapter) && be_physfn(adapter)) {
5576 adapter->csr = pci_iomap(pdev, 2, 0);
5577 if (!adapter->csr)
5578 return -ENOMEM;
5579 }
5580
5581 addr = pci_iomap(pdev, db_bar(adapter), 0);
5582 if (!addr)
5583 goto pci_map_err;
5584 adapter->db = addr;
5585
5586 if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5587 if (be_physfn(adapter)) {
5588 /* PCICFG is the 2nd BAR in BE2 */
5589 addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5590 if (!addr)
5591 goto pci_map_err;
5592 adapter->pcicfg = addr;
5593 adapter->pcicfg_mapped = true;
5594 } else {
5595 adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5596 adapter->pcicfg_mapped = false;
5597 }
5598 }
5599
5600 be_roce_map_pci_bars(adapter);
5601 return 0;
5602
5603 pci_map_err:
5604 dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5605 be_unmap_pci_bars(adapter);
5606 return -ENOMEM;
5607 }
5608
be_drv_cleanup(struct be_adapter * adapter)5609 static void be_drv_cleanup(struct be_adapter *adapter)
5610 {
5611 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5612 struct device *dev = &adapter->pdev->dev;
5613
5614 if (mem->va)
5615 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5616
5617 mem = &adapter->rx_filter;
5618 if (mem->va)
5619 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5620
5621 mem = &adapter->stats_cmd;
5622 if (mem->va)
5623 dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5624 }
5625
5626 /* Allocate and initialize various fields in be_adapter struct */
be_drv_init(struct be_adapter * adapter)5627 static int be_drv_init(struct be_adapter *adapter)
5628 {
5629 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5630 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5631 struct be_dma_mem *rx_filter = &adapter->rx_filter;
5632 struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5633 struct device *dev = &adapter->pdev->dev;
5634 int status = 0;
5635
5636 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5637 mbox_mem_alloc->va = dma_alloc_coherent(dev, mbox_mem_alloc->size,
5638 &mbox_mem_alloc->dma,
5639 GFP_KERNEL);
5640 if (!mbox_mem_alloc->va)
5641 return -ENOMEM;
5642
5643 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5644 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5645 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5646
5647 rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5648 rx_filter->va = dma_alloc_coherent(dev, rx_filter->size,
5649 &rx_filter->dma, GFP_KERNEL);
5650 if (!rx_filter->va) {
5651 status = -ENOMEM;
5652 goto free_mbox;
5653 }
5654
5655 if (lancer_chip(adapter))
5656 stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5657 else if (BE2_chip(adapter))
5658 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5659 else if (BE3_chip(adapter))
5660 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5661 else
5662 stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5663 stats_cmd->va = dma_alloc_coherent(dev, stats_cmd->size,
5664 &stats_cmd->dma, GFP_KERNEL);
5665 if (!stats_cmd->va) {
5666 status = -ENOMEM;
5667 goto free_rx_filter;
5668 }
5669
5670 mutex_init(&adapter->mbox_lock);
5671 mutex_init(&adapter->rx_filter_lock);
5672 spin_lock_init(&adapter->mcc_lock);
5673 spin_lock_init(&adapter->mcc_cq_lock);
5674 init_completion(&adapter->et_cmd_compl);
5675
5676 pci_save_state(adapter->pdev);
5677
5678 INIT_DELAYED_WORK(&adapter->work, be_worker);
5679
5680 adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE;
5681 adapter->error_recovery.resched_delay = 0;
5682 INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work,
5683 be_err_detection_task);
5684
5685 adapter->rx_fc = true;
5686 adapter->tx_fc = true;
5687
5688 /* Must be a power of 2 or else MODULO will BUG_ON */
5689 adapter->be_get_temp_freq = 64;
5690
5691 return 0;
5692
5693 free_rx_filter:
5694 dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5695 free_mbox:
5696 dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5697 mbox_mem_alloc->dma);
5698 return status;
5699 }
5700
be_remove(struct pci_dev * pdev)5701 static void be_remove(struct pci_dev *pdev)
5702 {
5703 struct be_adapter *adapter = pci_get_drvdata(pdev);
5704
5705 if (!adapter)
5706 return;
5707
5708 be_roce_dev_remove(adapter);
5709 be_intr_set(adapter, false);
5710
5711 be_cancel_err_detection(adapter);
5712
5713 unregister_netdev(adapter->netdev);
5714
5715 be_clear(adapter);
5716
5717 if (!pci_vfs_assigned(adapter->pdev))
5718 be_cmd_reset_function(adapter);
5719
5720 /* tell fw we're done with firing cmds */
5721 be_cmd_fw_clean(adapter);
5722
5723 be_unmap_pci_bars(adapter);
5724 be_drv_cleanup(adapter);
5725
5726 pci_release_regions(pdev);
5727 pci_disable_device(pdev);
5728
5729 free_netdev(adapter->netdev);
5730 }
5731
be_hwmon_show_temp(struct device * dev,struct device_attribute * dev_attr,char * buf)5732 static ssize_t be_hwmon_show_temp(struct device *dev,
5733 struct device_attribute *dev_attr,
5734 char *buf)
5735 {
5736 struct be_adapter *adapter = dev_get_drvdata(dev);
5737
5738 /* Unit: millidegree Celsius */
5739 if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5740 return -EIO;
5741 else
5742 return sprintf(buf, "%u\n",
5743 adapter->hwmon_info.be_on_die_temp * 1000);
5744 }
5745
5746 static SENSOR_DEVICE_ATTR(temp1_input, 0444,
5747 be_hwmon_show_temp, NULL, 1);
5748
5749 static struct attribute *be_hwmon_attrs[] = {
5750 &sensor_dev_attr_temp1_input.dev_attr.attr,
5751 NULL
5752 };
5753
5754 ATTRIBUTE_GROUPS(be_hwmon);
5755
mc_name(struct be_adapter * adapter)5756 static char *mc_name(struct be_adapter *adapter)
5757 {
5758 char *str = ""; /* default */
5759
5760 switch (adapter->mc_type) {
5761 case UMC:
5762 str = "UMC";
5763 break;
5764 case FLEX10:
5765 str = "FLEX10";
5766 break;
5767 case vNIC1:
5768 str = "vNIC-1";
5769 break;
5770 case nPAR:
5771 str = "nPAR";
5772 break;
5773 case UFP:
5774 str = "UFP";
5775 break;
5776 case vNIC2:
5777 str = "vNIC-2";
5778 break;
5779 default:
5780 str = "";
5781 }
5782
5783 return str;
5784 }
5785
func_name(struct be_adapter * adapter)5786 static inline char *func_name(struct be_adapter *adapter)
5787 {
5788 return be_physfn(adapter) ? "PF" : "VF";
5789 }
5790
nic_name(struct pci_dev * pdev)5791 static inline char *nic_name(struct pci_dev *pdev)
5792 {
5793 switch (pdev->device) {
5794 case OC_DEVICE_ID1:
5795 return OC_NAME;
5796 case OC_DEVICE_ID2:
5797 return OC_NAME_BE;
5798 case OC_DEVICE_ID3:
5799 case OC_DEVICE_ID4:
5800 return OC_NAME_LANCER;
5801 case BE_DEVICE_ID2:
5802 return BE3_NAME;
5803 case OC_DEVICE_ID5:
5804 case OC_DEVICE_ID6:
5805 return OC_NAME_SH;
5806 default:
5807 return BE_NAME;
5808 }
5809 }
5810
be_probe(struct pci_dev * pdev,const struct pci_device_id * pdev_id)5811 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5812 {
5813 struct be_adapter *adapter;
5814 struct net_device *netdev;
5815 int status = 0;
5816
5817 status = pci_enable_device(pdev);
5818 if (status)
5819 goto do_none;
5820
5821 status = pci_request_regions(pdev, DRV_NAME);
5822 if (status)
5823 goto disable_dev;
5824 pci_set_master(pdev);
5825
5826 netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5827 if (!netdev) {
5828 status = -ENOMEM;
5829 goto rel_reg;
5830 }
5831 adapter = netdev_priv(netdev);
5832 adapter->pdev = pdev;
5833 pci_set_drvdata(pdev, adapter);
5834 adapter->netdev = netdev;
5835 SET_NETDEV_DEV(netdev, &pdev->dev);
5836
5837 status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5838 if (status) {
5839 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5840 goto free_netdev;
5841 }
5842
5843 status = be_map_pci_bars(adapter);
5844 if (status)
5845 goto free_netdev;
5846
5847 status = be_drv_init(adapter);
5848 if (status)
5849 goto unmap_bars;
5850
5851 status = be_setup(adapter);
5852 if (status)
5853 goto drv_cleanup;
5854
5855 be_netdev_init(netdev);
5856 status = register_netdev(netdev);
5857 if (status != 0)
5858 goto unsetup;
5859
5860 be_roce_dev_add(adapter);
5861
5862 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5863 adapter->error_recovery.probe_time = jiffies;
5864
5865 /* On Die temperature not supported for VF. */
5866 if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5867 adapter->hwmon_info.hwmon_dev =
5868 devm_hwmon_device_register_with_groups(&pdev->dev,
5869 DRV_NAME,
5870 adapter,
5871 be_hwmon_groups);
5872 adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5873 }
5874
5875 dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5876 func_name(adapter), mc_name(adapter), adapter->port_name);
5877
5878 return 0;
5879
5880 unsetup:
5881 be_clear(adapter);
5882 drv_cleanup:
5883 be_drv_cleanup(adapter);
5884 unmap_bars:
5885 be_unmap_pci_bars(adapter);
5886 free_netdev:
5887 free_netdev(netdev);
5888 rel_reg:
5889 pci_release_regions(pdev);
5890 disable_dev:
5891 pci_disable_device(pdev);
5892 do_none:
5893 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5894 return status;
5895 }
5896
be_suspend(struct device * dev_d)5897 static int __maybe_unused be_suspend(struct device *dev_d)
5898 {
5899 struct be_adapter *adapter = dev_get_drvdata(dev_d);
5900
5901 be_intr_set(adapter, false);
5902 be_cancel_err_detection(adapter);
5903
5904 be_cleanup(adapter);
5905
5906 return 0;
5907 }
5908
be_pci_resume(struct device * dev_d)5909 static int __maybe_unused be_pci_resume(struct device *dev_d)
5910 {
5911 struct be_adapter *adapter = dev_get_drvdata(dev_d);
5912 int status = 0;
5913
5914 status = be_resume(adapter);
5915 if (status)
5916 return status;
5917
5918 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5919
5920 return 0;
5921 }
5922
5923 /*
5924 * An FLR will stop BE from DMAing any data.
5925 */
be_shutdown(struct pci_dev * pdev)5926 static void be_shutdown(struct pci_dev *pdev)
5927 {
5928 struct be_adapter *adapter = pci_get_drvdata(pdev);
5929
5930 if (!adapter)
5931 return;
5932
5933 be_roce_dev_shutdown(adapter);
5934 cancel_delayed_work_sync(&adapter->work);
5935 be_cancel_err_detection(adapter);
5936
5937 netif_device_detach(adapter->netdev);
5938
5939 be_cmd_reset_function(adapter);
5940
5941 pci_disable_device(pdev);
5942 }
5943
be_eeh_err_detected(struct pci_dev * pdev,pci_channel_state_t state)5944 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
5945 pci_channel_state_t state)
5946 {
5947 struct be_adapter *adapter = pci_get_drvdata(pdev);
5948
5949 dev_err(&adapter->pdev->dev, "EEH error detected\n");
5950
5951 be_roce_dev_remove(adapter);
5952
5953 if (!be_check_error(adapter, BE_ERROR_EEH)) {
5954 be_set_error(adapter, BE_ERROR_EEH);
5955
5956 be_cancel_err_detection(adapter);
5957
5958 be_cleanup(adapter);
5959 }
5960
5961 if (state == pci_channel_io_perm_failure)
5962 return PCI_ERS_RESULT_DISCONNECT;
5963
5964 pci_disable_device(pdev);
5965
5966 /* The error could cause the FW to trigger a flash debug dump.
5967 * Resetting the card while flash dump is in progress
5968 * can cause it not to recover; wait for it to finish.
5969 * Wait only for first function as it is needed only once per
5970 * adapter.
5971 */
5972 if (pdev->devfn == 0)
5973 ssleep(30);
5974
5975 return PCI_ERS_RESULT_NEED_RESET;
5976 }
5977
be_eeh_reset(struct pci_dev * pdev)5978 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
5979 {
5980 struct be_adapter *adapter = pci_get_drvdata(pdev);
5981 int status;
5982
5983 dev_info(&adapter->pdev->dev, "EEH reset\n");
5984
5985 status = pci_enable_device(pdev);
5986 if (status)
5987 return PCI_ERS_RESULT_DISCONNECT;
5988
5989 pci_set_master(pdev);
5990 pci_restore_state(pdev);
5991
5992 /* Check if card is ok and fw is ready */
5993 dev_info(&adapter->pdev->dev,
5994 "Waiting for FW to be ready after EEH reset\n");
5995 status = be_fw_wait_ready(adapter);
5996 if (status)
5997 return PCI_ERS_RESULT_DISCONNECT;
5998
5999 be_clear_error(adapter, BE_CLEAR_ALL);
6000 return PCI_ERS_RESULT_RECOVERED;
6001 }
6002
be_eeh_resume(struct pci_dev * pdev)6003 static void be_eeh_resume(struct pci_dev *pdev)
6004 {
6005 int status = 0;
6006 struct be_adapter *adapter = pci_get_drvdata(pdev);
6007
6008 dev_info(&adapter->pdev->dev, "EEH resume\n");
6009
6010 pci_save_state(pdev);
6011
6012 status = be_resume(adapter);
6013 if (status)
6014 goto err;
6015
6016 be_roce_dev_add(adapter);
6017
6018 be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
6019 return;
6020 err:
6021 dev_err(&adapter->pdev->dev, "EEH resume failed\n");
6022 }
6023
be_pci_sriov_configure(struct pci_dev * pdev,int num_vfs)6024 static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
6025 {
6026 struct be_adapter *adapter = pci_get_drvdata(pdev);
6027 struct be_resources vft_res = {0};
6028 int status;
6029
6030 if (!num_vfs)
6031 be_vf_clear(adapter);
6032
6033 adapter->num_vfs = num_vfs;
6034
6035 if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
6036 dev_warn(&pdev->dev,
6037 "Cannot disable VFs while they are assigned\n");
6038 return -EBUSY;
6039 }
6040
6041 /* When the HW is in SRIOV capable configuration, the PF-pool resources
6042 * are equally distributed across the max-number of VFs. The user may
6043 * request only a subset of the max-vfs to be enabled.
6044 * Based on num_vfs, redistribute the resources across num_vfs so that
6045 * each VF will have access to more number of resources.
6046 * This facility is not available in BE3 FW.
6047 * Also, this is done by FW in Lancer chip.
6048 */
6049 if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
6050 be_calculate_vf_res(adapter, adapter->num_vfs,
6051 &vft_res);
6052 status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
6053 adapter->num_vfs, &vft_res);
6054 if (status)
6055 dev_err(&pdev->dev,
6056 "Failed to optimize SR-IOV resources\n");
6057 }
6058
6059 status = be_get_resources(adapter);
6060 if (status)
6061 return be_cmd_status(status);
6062
6063 /* Updating real_num_tx/rx_queues() requires rtnl_lock() */
6064 rtnl_lock();
6065 status = be_update_queues(adapter);
6066 rtnl_unlock();
6067 if (status)
6068 return be_cmd_status(status);
6069
6070 if (adapter->num_vfs)
6071 status = be_vf_setup(adapter);
6072
6073 if (!status)
6074 return adapter->num_vfs;
6075
6076 return 0;
6077 }
6078
6079 static const struct pci_error_handlers be_eeh_handlers = {
6080 .error_detected = be_eeh_err_detected,
6081 .slot_reset = be_eeh_reset,
6082 .resume = be_eeh_resume,
6083 };
6084
6085 static SIMPLE_DEV_PM_OPS(be_pci_pm_ops, be_suspend, be_pci_resume);
6086
6087 static struct pci_driver be_driver = {
6088 .name = DRV_NAME,
6089 .id_table = be_dev_ids,
6090 .probe = be_probe,
6091 .remove = be_remove,
6092 .driver.pm = &be_pci_pm_ops,
6093 .shutdown = be_shutdown,
6094 .sriov_configure = be_pci_sriov_configure,
6095 .err_handler = &be_eeh_handlers
6096 };
6097
be_init_module(void)6098 static int __init be_init_module(void)
6099 {
6100 int status;
6101
6102 if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
6103 rx_frag_size != 2048) {
6104 printk(KERN_WARNING DRV_NAME
6105 " : Module param rx_frag_size must be 2048/4096/8192."
6106 " Using 2048\n");
6107 rx_frag_size = 2048;
6108 }
6109
6110 if (num_vfs > 0) {
6111 pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
6112 pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
6113 }
6114
6115 be_wq = create_singlethread_workqueue("be_wq");
6116 if (!be_wq) {
6117 pr_warn(DRV_NAME "workqueue creation failed\n");
6118 return -1;
6119 }
6120
6121 be_err_recovery_workq =
6122 create_singlethread_workqueue("be_err_recover");
6123 if (!be_err_recovery_workq)
6124 pr_warn(DRV_NAME "Could not create error recovery workqueue\n");
6125
6126 status = pci_register_driver(&be_driver);
6127 if (status) {
6128 destroy_workqueue(be_wq);
6129 be_destroy_err_recovery_workq();
6130 }
6131 return status;
6132 }
6133 module_init(be_init_module);
6134
be_exit_module(void)6135 static void __exit be_exit_module(void)
6136 {
6137 pci_unregister_driver(&be_driver);
6138
6139 be_destroy_err_recovery_workq();
6140
6141 if (be_wq)
6142 destroy_workqueue(be_wq);
6143 }
6144 module_exit(be_exit_module);
6145