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/aer.h>
20 #include <linux/if_bridge.h>
21 #include <net/busy_poll.h>
22 #include <net/vxlan.h>
23 
24 MODULE_DESCRIPTION(DRV_DESC);
25 MODULE_AUTHOR("Emulex Corporation");
26 MODULE_LICENSE("GPL");
27 
28 /* num_vfs module param is obsolete.
29  * Use sysfs method to enable/disable VFs.
30  */
31 static unsigned int num_vfs;
32 module_param(num_vfs, uint, 0444);
33 MODULE_PARM_DESC(num_vfs, "Number of PCI VFs to initialize");
34 
35 static ushort rx_frag_size = 2048;
36 module_param(rx_frag_size, ushort, 0444);
37 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
38 
39 /* Per-module error detection/recovery workq shared across all functions.
40  * Each function schedules its own work request on this shared workq.
41  */
42 static struct workqueue_struct *be_err_recovery_workq;
43 
44 static const struct pci_device_id be_dev_ids[] = {
45 #ifdef CONFIG_BE2NET_BE2
46 	{ PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
47 	{ PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
48 #endif /* CONFIG_BE2NET_BE2 */
49 #ifdef CONFIG_BE2NET_BE3
50 	{ PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
51 	{ PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
52 #endif /* CONFIG_BE2NET_BE3 */
53 #ifdef CONFIG_BE2NET_LANCER
54 	{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID3)},
55 	{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID4)},
56 #endif /* CONFIG_BE2NET_LANCER */
57 #ifdef CONFIG_BE2NET_SKYHAWK
58 	{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID5)},
59 	{ PCI_DEVICE(EMULEX_VENDOR_ID, OC_DEVICE_ID6)},
60 #endif /* CONFIG_BE2NET_SKYHAWK */
61 	{ 0 }
62 };
63 MODULE_DEVICE_TABLE(pci, be_dev_ids);
64 
65 /* Workqueue used by all functions for defering cmd calls to the adapter */
66 static struct workqueue_struct *be_wq;
67 
68 /* UE Status Low CSR */
69 static const char * const ue_status_low_desc[] = {
70 	"CEV",
71 	"CTX",
72 	"DBUF",
73 	"ERX",
74 	"Host",
75 	"MPU",
76 	"NDMA",
77 	"PTC ",
78 	"RDMA ",
79 	"RXF ",
80 	"RXIPS ",
81 	"RXULP0 ",
82 	"RXULP1 ",
83 	"RXULP2 ",
84 	"TIM ",
85 	"TPOST ",
86 	"TPRE ",
87 	"TXIPS ",
88 	"TXULP0 ",
89 	"TXULP1 ",
90 	"UC ",
91 	"WDMA ",
92 	"TXULP2 ",
93 	"HOST1 ",
94 	"P0_OB_LINK ",
95 	"P1_OB_LINK ",
96 	"HOST_GPIO ",
97 	"MBOX ",
98 	"ERX2 ",
99 	"SPARE ",
100 	"JTAG ",
101 	"MPU_INTPEND "
102 };
103 
104 /* UE Status High CSR */
105 static const char * const ue_status_hi_desc[] = {
106 	"LPCMEMHOST",
107 	"MGMT_MAC",
108 	"PCS0ONLINE",
109 	"MPU_IRAM",
110 	"PCS1ONLINE",
111 	"PCTL0",
112 	"PCTL1",
113 	"PMEM",
114 	"RR",
115 	"TXPB",
116 	"RXPP",
117 	"XAUI",
118 	"TXP",
119 	"ARM",
120 	"IPC",
121 	"HOST2",
122 	"HOST3",
123 	"HOST4",
124 	"HOST5",
125 	"HOST6",
126 	"HOST7",
127 	"ECRC",
128 	"Poison TLP",
129 	"NETC",
130 	"PERIPH",
131 	"LLTXULP",
132 	"D2P",
133 	"RCON",
134 	"LDMA",
135 	"LLTXP",
136 	"LLTXPB",
137 	"Unknown"
138 };
139 
140 #define BE_VF_IF_EN_FLAGS	(BE_IF_FLAGS_UNTAGGED | \
141 				 BE_IF_FLAGS_BROADCAST | \
142 				 BE_IF_FLAGS_MULTICAST | \
143 				 BE_IF_FLAGS_PASS_L3L4_ERRORS)
144 
145 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
146 {
147 	struct be_dma_mem *mem = &q->dma_mem;
148 
149 	if (mem->va) {
150 		dma_free_coherent(&adapter->pdev->dev, mem->size, mem->va,
151 				  mem->dma);
152 		mem->va = NULL;
153 	}
154 }
155 
156 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
157 			  u16 len, u16 entry_size)
158 {
159 	struct be_dma_mem *mem = &q->dma_mem;
160 
161 	memset(q, 0, sizeof(*q));
162 	q->len = len;
163 	q->entry_size = entry_size;
164 	mem->size = len * entry_size;
165 	mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
166 				     &mem->dma, GFP_KERNEL);
167 	if (!mem->va)
168 		return -ENOMEM;
169 	return 0;
170 }
171 
172 static void be_reg_intr_set(struct be_adapter *adapter, bool enable)
173 {
174 	u32 reg, enabled;
175 
176 	pci_read_config_dword(adapter->pdev, PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET,
177 			      &reg);
178 	enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
179 
180 	if (!enabled && enable)
181 		reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
182 	else if (enabled && !enable)
183 		reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
184 	else
185 		return;
186 
187 	pci_write_config_dword(adapter->pdev,
188 			       PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET, reg);
189 }
190 
191 static void be_intr_set(struct be_adapter *adapter, bool enable)
192 {
193 	int status = 0;
194 
195 	/* On lancer interrupts can't be controlled via this register */
196 	if (lancer_chip(adapter))
197 		return;
198 
199 	if (be_check_error(adapter, BE_ERROR_EEH))
200 		return;
201 
202 	status = be_cmd_intr_set(adapter, enable);
203 	if (status)
204 		be_reg_intr_set(adapter, enable);
205 }
206 
207 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
208 {
209 	u32 val = 0;
210 
211 	if (be_check_error(adapter, BE_ERROR_HW))
212 		return;
213 
214 	val |= qid & DB_RQ_RING_ID_MASK;
215 	val |= posted << DB_RQ_NUM_POSTED_SHIFT;
216 
217 	wmb();
218 	iowrite32(val, adapter->db + DB_RQ_OFFSET);
219 }
220 
221 static void be_txq_notify(struct be_adapter *adapter, struct be_tx_obj *txo,
222 			  u16 posted)
223 {
224 	u32 val = 0;
225 
226 	if (be_check_error(adapter, BE_ERROR_HW))
227 		return;
228 
229 	val |= txo->q.id & DB_TXULP_RING_ID_MASK;
230 	val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
231 
232 	wmb();
233 	iowrite32(val, adapter->db + txo->db_offset);
234 }
235 
236 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
237 			 bool arm, bool clear_int, u16 num_popped,
238 			 u32 eq_delay_mult_enc)
239 {
240 	u32 val = 0;
241 
242 	val |= qid & DB_EQ_RING_ID_MASK;
243 	val |= ((qid & DB_EQ_RING_ID_EXT_MASK) << DB_EQ_RING_ID_EXT_MASK_SHIFT);
244 
245 	if (be_check_error(adapter, BE_ERROR_HW))
246 		return;
247 
248 	if (arm)
249 		val |= 1 << DB_EQ_REARM_SHIFT;
250 	if (clear_int)
251 		val |= 1 << DB_EQ_CLR_SHIFT;
252 	val |= 1 << DB_EQ_EVNT_SHIFT;
253 	val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
254 	val |= eq_delay_mult_enc << DB_EQ_R2I_DLY_SHIFT;
255 	iowrite32(val, adapter->db + DB_EQ_OFFSET);
256 }
257 
258 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
259 {
260 	u32 val = 0;
261 
262 	val |= qid & DB_CQ_RING_ID_MASK;
263 	val |= ((qid & DB_CQ_RING_ID_EXT_MASK) <<
264 			DB_CQ_RING_ID_EXT_MASK_SHIFT);
265 
266 	if (be_check_error(adapter, BE_ERROR_HW))
267 		return;
268 
269 	if (arm)
270 		val |= 1 << DB_CQ_REARM_SHIFT;
271 	val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
272 	iowrite32(val, adapter->db + DB_CQ_OFFSET);
273 }
274 
275 static int be_dev_mac_add(struct be_adapter *adapter, const u8 *mac)
276 {
277 	int i;
278 
279 	/* Check if mac has already been added as part of uc-list */
280 	for (i = 0; i < adapter->uc_macs; i++) {
281 		if (ether_addr_equal(adapter->uc_list[i].mac, mac)) {
282 			/* mac already added, skip addition */
283 			adapter->pmac_id[0] = adapter->pmac_id[i + 1];
284 			return 0;
285 		}
286 	}
287 
288 	return be_cmd_pmac_add(adapter, mac, adapter->if_handle,
289 			       &adapter->pmac_id[0], 0);
290 }
291 
292 static void be_dev_mac_del(struct be_adapter *adapter, int pmac_id)
293 {
294 	int i;
295 
296 	/* Skip deletion if the programmed mac is
297 	 * being used in uc-list
298 	 */
299 	for (i = 0; i < adapter->uc_macs; i++) {
300 		if (adapter->pmac_id[i + 1] == pmac_id)
301 			return;
302 	}
303 	be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
304 }
305 
306 static int be_mac_addr_set(struct net_device *netdev, void *p)
307 {
308 	struct be_adapter *adapter = netdev_priv(netdev);
309 	struct device *dev = &adapter->pdev->dev;
310 	struct sockaddr *addr = p;
311 	int status;
312 	u8 mac[ETH_ALEN];
313 	u32 old_pmac_id = adapter->pmac_id[0];
314 
315 	if (!is_valid_ether_addr(addr->sa_data))
316 		return -EADDRNOTAVAIL;
317 
318 	/* Proceed further only if, User provided MAC is different
319 	 * from active MAC
320 	 */
321 	if (ether_addr_equal(addr->sa_data, adapter->dev_mac))
322 		return 0;
323 
324 	/* BE3 VFs without FILTMGMT privilege are not allowed to set its MAC
325 	 * address
326 	 */
327 	if (BEx_chip(adapter) && be_virtfn(adapter) &&
328 	    !check_privilege(adapter, BE_PRIV_FILTMGMT))
329 		return -EPERM;
330 
331 	/* if device is not running, copy MAC to netdev->dev_addr */
332 	if (!netif_running(netdev))
333 		goto done;
334 
335 	/* The PMAC_ADD cmd may fail if the VF doesn't have FILTMGMT
336 	 * privilege or if PF did not provision the new MAC address.
337 	 * On BE3, this cmd will always fail if the VF doesn't have the
338 	 * FILTMGMT privilege. This failure is OK, only if the PF programmed
339 	 * the MAC for the VF.
340 	 */
341 	mutex_lock(&adapter->rx_filter_lock);
342 	status = be_dev_mac_add(adapter, (u8 *)addr->sa_data);
343 	if (!status) {
344 
345 		/* Delete the old programmed MAC. This call may fail if the
346 		 * old MAC was already deleted by the PF driver.
347 		 */
348 		if (adapter->pmac_id[0] != old_pmac_id)
349 			be_dev_mac_del(adapter, old_pmac_id);
350 	}
351 
352 	mutex_unlock(&adapter->rx_filter_lock);
353 	/* Decide if the new MAC is successfully activated only after
354 	 * querying the FW
355 	 */
356 	status = be_cmd_get_active_mac(adapter, adapter->pmac_id[0], mac,
357 				       adapter->if_handle, true, 0);
358 	if (status)
359 		goto err;
360 
361 	/* The MAC change did not happen, either due to lack of privilege
362 	 * or PF didn't pre-provision.
363 	 */
364 	if (!ether_addr_equal(addr->sa_data, mac)) {
365 		status = -EPERM;
366 		goto err;
367 	}
368 
369 	/* Remember currently programmed MAC */
370 	ether_addr_copy(adapter->dev_mac, addr->sa_data);
371 done:
372 	eth_hw_addr_set(netdev, addr->sa_data);
373 	dev_info(dev, "MAC address changed to %pM\n", addr->sa_data);
374 	return 0;
375 err:
376 	dev_warn(dev, "MAC address change to %pM failed\n", addr->sa_data);
377 	return status;
378 }
379 
380 /* BE2 supports only v0 cmd */
381 static void *hw_stats_from_cmd(struct be_adapter *adapter)
382 {
383 	if (BE2_chip(adapter)) {
384 		struct be_cmd_resp_get_stats_v0 *cmd = adapter->stats_cmd.va;
385 
386 		return &cmd->hw_stats;
387 	} else if (BE3_chip(adapter)) {
388 		struct be_cmd_resp_get_stats_v1 *cmd = adapter->stats_cmd.va;
389 
390 		return &cmd->hw_stats;
391 	} else {
392 		struct be_cmd_resp_get_stats_v2 *cmd = adapter->stats_cmd.va;
393 
394 		return &cmd->hw_stats;
395 	}
396 }
397 
398 /* BE2 supports only v0 cmd */
399 static void *be_erx_stats_from_cmd(struct be_adapter *adapter)
400 {
401 	if (BE2_chip(adapter)) {
402 		struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
403 
404 		return &hw_stats->erx;
405 	} else if (BE3_chip(adapter)) {
406 		struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
407 
408 		return &hw_stats->erx;
409 	} else {
410 		struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
411 
412 		return &hw_stats->erx;
413 	}
414 }
415 
416 static void populate_be_v0_stats(struct be_adapter *adapter)
417 {
418 	struct be_hw_stats_v0 *hw_stats = hw_stats_from_cmd(adapter);
419 	struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
420 	struct be_rxf_stats_v0 *rxf_stats = &hw_stats->rxf;
421 	struct be_port_rxf_stats_v0 *port_stats =
422 					&rxf_stats->port[adapter->port_num];
423 	struct be_drv_stats *drvs = &adapter->drv_stats;
424 
425 	be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
426 	drvs->rx_pause_frames = port_stats->rx_pause_frames;
427 	drvs->rx_crc_errors = port_stats->rx_crc_errors;
428 	drvs->rx_control_frames = port_stats->rx_control_frames;
429 	drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
430 	drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
431 	drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
432 	drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
433 	drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
434 	drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
435 	drvs->rxpp_fifo_overflow_drop = port_stats->rx_fifo_overflow;
436 	drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
437 	drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
438 	drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
439 	drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
440 	drvs->rx_input_fifo_overflow_drop = port_stats->rx_input_fifo_overflow;
441 	drvs->rx_dropped_header_too_small =
442 		port_stats->rx_dropped_header_too_small;
443 	drvs->rx_address_filtered =
444 					port_stats->rx_address_filtered +
445 					port_stats->rx_vlan_filtered;
446 	drvs->rx_alignment_symbol_errors =
447 		port_stats->rx_alignment_symbol_errors;
448 
449 	drvs->tx_pauseframes = port_stats->tx_pauseframes;
450 	drvs->tx_controlframes = port_stats->tx_controlframes;
451 
452 	if (adapter->port_num)
453 		drvs->jabber_events = rxf_stats->port1_jabber_events;
454 	else
455 		drvs->jabber_events = rxf_stats->port0_jabber_events;
456 	drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
457 	drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
458 	drvs->forwarded_packets = rxf_stats->forwarded_packets;
459 	drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
460 	drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
461 	drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
462 	adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
463 }
464 
465 static void populate_be_v1_stats(struct be_adapter *adapter)
466 {
467 	struct be_hw_stats_v1 *hw_stats = hw_stats_from_cmd(adapter);
468 	struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
469 	struct be_rxf_stats_v1 *rxf_stats = &hw_stats->rxf;
470 	struct be_port_rxf_stats_v1 *port_stats =
471 					&rxf_stats->port[adapter->port_num];
472 	struct be_drv_stats *drvs = &adapter->drv_stats;
473 
474 	be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
475 	drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
476 	drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
477 	drvs->rx_pause_frames = port_stats->rx_pause_frames;
478 	drvs->rx_crc_errors = port_stats->rx_crc_errors;
479 	drvs->rx_control_frames = port_stats->rx_control_frames;
480 	drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
481 	drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
482 	drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
483 	drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
484 	drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
485 	drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
486 	drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
487 	drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
488 	drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
489 	drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
490 	drvs->rx_dropped_header_too_small =
491 		port_stats->rx_dropped_header_too_small;
492 	drvs->rx_input_fifo_overflow_drop =
493 		port_stats->rx_input_fifo_overflow_drop;
494 	drvs->rx_address_filtered = port_stats->rx_address_filtered;
495 	drvs->rx_alignment_symbol_errors =
496 		port_stats->rx_alignment_symbol_errors;
497 	drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
498 	drvs->tx_pauseframes = port_stats->tx_pauseframes;
499 	drvs->tx_controlframes = port_stats->tx_controlframes;
500 	drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
501 	drvs->jabber_events = port_stats->jabber_events;
502 	drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
503 	drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
504 	drvs->forwarded_packets = rxf_stats->forwarded_packets;
505 	drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
506 	drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
507 	drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
508 	adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
509 }
510 
511 static void populate_be_v2_stats(struct be_adapter *adapter)
512 {
513 	struct be_hw_stats_v2 *hw_stats = hw_stats_from_cmd(adapter);
514 	struct be_pmem_stats *pmem_sts = &hw_stats->pmem;
515 	struct be_rxf_stats_v2 *rxf_stats = &hw_stats->rxf;
516 	struct be_port_rxf_stats_v2 *port_stats =
517 					&rxf_stats->port[adapter->port_num];
518 	struct be_drv_stats *drvs = &adapter->drv_stats;
519 
520 	be_dws_le_to_cpu(hw_stats, sizeof(*hw_stats));
521 	drvs->pmem_fifo_overflow_drop = port_stats->pmem_fifo_overflow_drop;
522 	drvs->rx_priority_pause_frames = port_stats->rx_priority_pause_frames;
523 	drvs->rx_pause_frames = port_stats->rx_pause_frames;
524 	drvs->rx_crc_errors = port_stats->rx_crc_errors;
525 	drvs->rx_control_frames = port_stats->rx_control_frames;
526 	drvs->rx_in_range_errors = port_stats->rx_in_range_errors;
527 	drvs->rx_frame_too_long = port_stats->rx_frame_too_long;
528 	drvs->rx_dropped_runt = port_stats->rx_dropped_runt;
529 	drvs->rx_ip_checksum_errs = port_stats->rx_ip_checksum_errs;
530 	drvs->rx_tcp_checksum_errs = port_stats->rx_tcp_checksum_errs;
531 	drvs->rx_udp_checksum_errs = port_stats->rx_udp_checksum_errs;
532 	drvs->rx_dropped_tcp_length = port_stats->rx_dropped_tcp_length;
533 	drvs->rx_dropped_too_small = port_stats->rx_dropped_too_small;
534 	drvs->rx_dropped_too_short = port_stats->rx_dropped_too_short;
535 	drvs->rx_out_range_errors = port_stats->rx_out_range_errors;
536 	drvs->rx_dropped_header_too_small =
537 		port_stats->rx_dropped_header_too_small;
538 	drvs->rx_input_fifo_overflow_drop =
539 		port_stats->rx_input_fifo_overflow_drop;
540 	drvs->rx_address_filtered = port_stats->rx_address_filtered;
541 	drvs->rx_alignment_symbol_errors =
542 		port_stats->rx_alignment_symbol_errors;
543 	drvs->rxpp_fifo_overflow_drop = port_stats->rxpp_fifo_overflow_drop;
544 	drvs->tx_pauseframes = port_stats->tx_pauseframes;
545 	drvs->tx_controlframes = port_stats->tx_controlframes;
546 	drvs->tx_priority_pauseframes = port_stats->tx_priority_pauseframes;
547 	drvs->jabber_events = port_stats->jabber_events;
548 	drvs->rx_drops_no_pbuf = rxf_stats->rx_drops_no_pbuf;
549 	drvs->rx_drops_no_erx_descr = rxf_stats->rx_drops_no_erx_descr;
550 	drvs->forwarded_packets = rxf_stats->forwarded_packets;
551 	drvs->rx_drops_mtu = rxf_stats->rx_drops_mtu;
552 	drvs->rx_drops_no_tpre_descr = rxf_stats->rx_drops_no_tpre_descr;
553 	drvs->rx_drops_too_many_frags = rxf_stats->rx_drops_too_many_frags;
554 	adapter->drv_stats.eth_red_drops = pmem_sts->eth_red_drops;
555 	if (be_roce_supported(adapter)) {
556 		drvs->rx_roce_bytes_lsd = port_stats->roce_bytes_received_lsd;
557 		drvs->rx_roce_bytes_msd = port_stats->roce_bytes_received_msd;
558 		drvs->rx_roce_frames = port_stats->roce_frames_received;
559 		drvs->roce_drops_crc = port_stats->roce_drops_crc;
560 		drvs->roce_drops_payload_len =
561 			port_stats->roce_drops_payload_len;
562 	}
563 }
564 
565 static void populate_lancer_stats(struct be_adapter *adapter)
566 {
567 	struct be_drv_stats *drvs = &adapter->drv_stats;
568 	struct lancer_pport_stats *pport_stats = pport_stats_from_cmd(adapter);
569 
570 	be_dws_le_to_cpu(pport_stats, sizeof(*pport_stats));
571 	drvs->rx_pause_frames = pport_stats->rx_pause_frames_lo;
572 	drvs->rx_crc_errors = pport_stats->rx_crc_errors_lo;
573 	drvs->rx_control_frames = pport_stats->rx_control_frames_lo;
574 	drvs->rx_in_range_errors = pport_stats->rx_in_range_errors;
575 	drvs->rx_frame_too_long = pport_stats->rx_frames_too_long_lo;
576 	drvs->rx_dropped_runt = pport_stats->rx_dropped_runt;
577 	drvs->rx_ip_checksum_errs = pport_stats->rx_ip_checksum_errors;
578 	drvs->rx_tcp_checksum_errs = pport_stats->rx_tcp_checksum_errors;
579 	drvs->rx_udp_checksum_errs = pport_stats->rx_udp_checksum_errors;
580 	drvs->rx_dropped_tcp_length =
581 				pport_stats->rx_dropped_invalid_tcp_length;
582 	drvs->rx_dropped_too_small = pport_stats->rx_dropped_too_small;
583 	drvs->rx_dropped_too_short = pport_stats->rx_dropped_too_short;
584 	drvs->rx_out_range_errors = pport_stats->rx_out_of_range_errors;
585 	drvs->rx_dropped_header_too_small =
586 				pport_stats->rx_dropped_header_too_small;
587 	drvs->rx_input_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
588 	drvs->rx_address_filtered =
589 					pport_stats->rx_address_filtered +
590 					pport_stats->rx_vlan_filtered;
591 	drvs->rx_alignment_symbol_errors = pport_stats->rx_symbol_errors_lo;
592 	drvs->rxpp_fifo_overflow_drop = pport_stats->rx_fifo_overflow;
593 	drvs->tx_pauseframes = pport_stats->tx_pause_frames_lo;
594 	drvs->tx_controlframes = pport_stats->tx_control_frames_lo;
595 	drvs->jabber_events = pport_stats->rx_jabbers;
596 	drvs->forwarded_packets = pport_stats->num_forwards_lo;
597 	drvs->rx_drops_mtu = pport_stats->rx_drops_mtu_lo;
598 	drvs->rx_drops_too_many_frags =
599 				pport_stats->rx_drops_too_many_frags_lo;
600 }
601 
602 static void accumulate_16bit_val(u32 *acc, u16 val)
603 {
604 #define lo(x)			(x & 0xFFFF)
605 #define hi(x)			(x & 0xFFFF0000)
606 	bool wrapped = val < lo(*acc);
607 	u32 newacc = hi(*acc) + val;
608 
609 	if (wrapped)
610 		newacc += 65536;
611 	WRITE_ONCE(*acc, newacc);
612 }
613 
614 static void populate_erx_stats(struct be_adapter *adapter,
615 			       struct be_rx_obj *rxo, u32 erx_stat)
616 {
617 	if (!BEx_chip(adapter))
618 		rx_stats(rxo)->rx_drops_no_frags = erx_stat;
619 	else
620 		/* below erx HW counter can actually wrap around after
621 		 * 65535. Driver accumulates a 32-bit value
622 		 */
623 		accumulate_16bit_val(&rx_stats(rxo)->rx_drops_no_frags,
624 				     (u16)erx_stat);
625 }
626 
627 void be_parse_stats(struct be_adapter *adapter)
628 {
629 	struct be_erx_stats_v2 *erx = be_erx_stats_from_cmd(adapter);
630 	struct be_rx_obj *rxo;
631 	int i;
632 	u32 erx_stat;
633 
634 	if (lancer_chip(adapter)) {
635 		populate_lancer_stats(adapter);
636 	} else {
637 		if (BE2_chip(adapter))
638 			populate_be_v0_stats(adapter);
639 		else if (BE3_chip(adapter))
640 			/* for BE3 */
641 			populate_be_v1_stats(adapter);
642 		else
643 			populate_be_v2_stats(adapter);
644 
645 		/* erx_v2 is longer than v0, v1. use v2 for v0, v1 access */
646 		for_all_rx_queues(adapter, rxo, i) {
647 			erx_stat = erx->rx_drops_no_fragments[rxo->q.id];
648 			populate_erx_stats(adapter, rxo, erx_stat);
649 		}
650 	}
651 }
652 
653 static void be_get_stats64(struct net_device *netdev,
654 			   struct rtnl_link_stats64 *stats)
655 {
656 	struct be_adapter *adapter = netdev_priv(netdev);
657 	struct be_drv_stats *drvs = &adapter->drv_stats;
658 	struct be_rx_obj *rxo;
659 	struct be_tx_obj *txo;
660 	u64 pkts, bytes;
661 	unsigned int start;
662 	int i;
663 
664 	for_all_rx_queues(adapter, rxo, i) {
665 		const struct be_rx_stats *rx_stats = rx_stats(rxo);
666 
667 		do {
668 			start = u64_stats_fetch_begin_irq(&rx_stats->sync);
669 			pkts = rx_stats(rxo)->rx_pkts;
670 			bytes = rx_stats(rxo)->rx_bytes;
671 		} while (u64_stats_fetch_retry_irq(&rx_stats->sync, start));
672 		stats->rx_packets += pkts;
673 		stats->rx_bytes += bytes;
674 		stats->multicast += rx_stats(rxo)->rx_mcast_pkts;
675 		stats->rx_dropped += rx_stats(rxo)->rx_drops_no_skbs +
676 					rx_stats(rxo)->rx_drops_no_frags;
677 	}
678 
679 	for_all_tx_queues(adapter, txo, i) {
680 		const struct be_tx_stats *tx_stats = tx_stats(txo);
681 
682 		do {
683 			start = u64_stats_fetch_begin_irq(&tx_stats->sync);
684 			pkts = tx_stats(txo)->tx_pkts;
685 			bytes = tx_stats(txo)->tx_bytes;
686 		} while (u64_stats_fetch_retry_irq(&tx_stats->sync, start));
687 		stats->tx_packets += pkts;
688 		stats->tx_bytes += bytes;
689 	}
690 
691 	/* bad pkts received */
692 	stats->rx_errors = drvs->rx_crc_errors +
693 		drvs->rx_alignment_symbol_errors +
694 		drvs->rx_in_range_errors +
695 		drvs->rx_out_range_errors +
696 		drvs->rx_frame_too_long +
697 		drvs->rx_dropped_too_small +
698 		drvs->rx_dropped_too_short +
699 		drvs->rx_dropped_header_too_small +
700 		drvs->rx_dropped_tcp_length +
701 		drvs->rx_dropped_runt;
702 
703 	/* detailed rx errors */
704 	stats->rx_length_errors = drvs->rx_in_range_errors +
705 		drvs->rx_out_range_errors +
706 		drvs->rx_frame_too_long;
707 
708 	stats->rx_crc_errors = drvs->rx_crc_errors;
709 
710 	/* frame alignment errors */
711 	stats->rx_frame_errors = drvs->rx_alignment_symbol_errors;
712 
713 	/* receiver fifo overrun */
714 	/* drops_no_pbuf is no per i/f, it's per BE card */
715 	stats->rx_fifo_errors = drvs->rxpp_fifo_overflow_drop +
716 				drvs->rx_input_fifo_overflow_drop +
717 				drvs->rx_drops_no_pbuf;
718 }
719 
720 void be_link_status_update(struct be_adapter *adapter, u8 link_status)
721 {
722 	struct net_device *netdev = adapter->netdev;
723 
724 	if (!(adapter->flags & BE_FLAGS_LINK_STATUS_INIT)) {
725 		netif_carrier_off(netdev);
726 		adapter->flags |= BE_FLAGS_LINK_STATUS_INIT;
727 	}
728 
729 	if (link_status)
730 		netif_carrier_on(netdev);
731 	else
732 		netif_carrier_off(netdev);
733 
734 	netdev_info(netdev, "Link is %s\n", link_status ? "Up" : "Down");
735 }
736 
737 static int be_gso_hdr_len(struct sk_buff *skb)
738 {
739 	if (skb->encapsulation)
740 		return skb_inner_tcp_all_headers(skb);
741 
742 	return skb_tcp_all_headers(skb);
743 }
744 
745 static void be_tx_stats_update(struct be_tx_obj *txo, struct sk_buff *skb)
746 {
747 	struct be_tx_stats *stats = tx_stats(txo);
748 	u32 tx_pkts = skb_shinfo(skb)->gso_segs ? : 1;
749 	/* Account for headers which get duplicated in TSO pkt */
750 	u32 dup_hdr_len = tx_pkts > 1 ? be_gso_hdr_len(skb) * (tx_pkts - 1) : 0;
751 
752 	u64_stats_update_begin(&stats->sync);
753 	stats->tx_reqs++;
754 	stats->tx_bytes += skb->len + dup_hdr_len;
755 	stats->tx_pkts += tx_pkts;
756 	if (skb->encapsulation && skb->ip_summed == CHECKSUM_PARTIAL)
757 		stats->tx_vxlan_offload_pkts += tx_pkts;
758 	u64_stats_update_end(&stats->sync);
759 }
760 
761 /* Returns number of WRBs needed for the skb */
762 static u32 skb_wrb_cnt(struct sk_buff *skb)
763 {
764 	/* +1 for the header wrb */
765 	return 1 + (skb_headlen(skb) ? 1 : 0) + skb_shinfo(skb)->nr_frags;
766 }
767 
768 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
769 {
770 	wrb->frag_pa_hi = cpu_to_le32(upper_32_bits(addr));
771 	wrb->frag_pa_lo = cpu_to_le32(lower_32_bits(addr));
772 	wrb->frag_len = cpu_to_le32(len & ETH_WRB_FRAG_LEN_MASK);
773 	wrb->rsvd0 = 0;
774 }
775 
776 /* A dummy wrb is just all zeros. Using a separate routine for dummy-wrb
777  * to avoid the swap and shift/mask operations in wrb_fill().
778  */
779 static inline void wrb_fill_dummy(struct be_eth_wrb *wrb)
780 {
781 	wrb->frag_pa_hi = 0;
782 	wrb->frag_pa_lo = 0;
783 	wrb->frag_len = 0;
784 	wrb->rsvd0 = 0;
785 }
786 
787 static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter,
788 				     struct sk_buff *skb)
789 {
790 	u8 vlan_prio;
791 	u16 vlan_tag;
792 
793 	vlan_tag = skb_vlan_tag_get(skb);
794 	vlan_prio = skb_vlan_tag_get_prio(skb);
795 	/* If vlan priority provided by OS is NOT in available bmap */
796 	if (!(adapter->vlan_prio_bmap & (1 << vlan_prio)))
797 		vlan_tag = (vlan_tag & ~VLAN_PRIO_MASK) |
798 				adapter->recommended_prio_bits;
799 
800 	return vlan_tag;
801 }
802 
803 /* Used only for IP tunnel packets */
804 static u16 skb_inner_ip_proto(struct sk_buff *skb)
805 {
806 	return (inner_ip_hdr(skb)->version == 4) ?
807 		inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr;
808 }
809 
810 static u16 skb_ip_proto(struct sk_buff *skb)
811 {
812 	return (ip_hdr(skb)->version == 4) ?
813 		ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr;
814 }
815 
816 static inline bool be_is_txq_full(struct be_tx_obj *txo)
817 {
818 	return atomic_read(&txo->q.used) + BE_MAX_TX_FRAG_COUNT >= txo->q.len;
819 }
820 
821 static inline bool be_can_txq_wake(struct be_tx_obj *txo)
822 {
823 	return atomic_read(&txo->q.used) < txo->q.len / 2;
824 }
825 
826 static inline bool be_is_tx_compl_pending(struct be_tx_obj *txo)
827 {
828 	return atomic_read(&txo->q.used) > txo->pend_wrb_cnt;
829 }
830 
831 static void be_get_wrb_params_from_skb(struct be_adapter *adapter,
832 				       struct sk_buff *skb,
833 				       struct be_wrb_params *wrb_params)
834 {
835 	u16 proto;
836 
837 	if (skb_is_gso(skb)) {
838 		BE_WRB_F_SET(wrb_params->features, LSO, 1);
839 		wrb_params->lso_mss = skb_shinfo(skb)->gso_size;
840 		if (skb_is_gso_v6(skb) && !lancer_chip(adapter))
841 			BE_WRB_F_SET(wrb_params->features, LSO6, 1);
842 	} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
843 		if (skb->encapsulation) {
844 			BE_WRB_F_SET(wrb_params->features, IPCS, 1);
845 			proto = skb_inner_ip_proto(skb);
846 		} else {
847 			proto = skb_ip_proto(skb);
848 		}
849 		if (proto == IPPROTO_TCP)
850 			BE_WRB_F_SET(wrb_params->features, TCPCS, 1);
851 		else if (proto == IPPROTO_UDP)
852 			BE_WRB_F_SET(wrb_params->features, UDPCS, 1);
853 	}
854 
855 	if (skb_vlan_tag_present(skb)) {
856 		BE_WRB_F_SET(wrb_params->features, VLAN, 1);
857 		wrb_params->vlan_tag = be_get_tx_vlan_tag(adapter, skb);
858 	}
859 
860 	BE_WRB_F_SET(wrb_params->features, CRC, 1);
861 }
862 
863 static void wrb_fill_hdr(struct be_adapter *adapter,
864 			 struct be_eth_hdr_wrb *hdr,
865 			 struct be_wrb_params *wrb_params,
866 			 struct sk_buff *skb)
867 {
868 	memset(hdr, 0, sizeof(*hdr));
869 
870 	SET_TX_WRB_HDR_BITS(crc, hdr,
871 			    BE_WRB_F_GET(wrb_params->features, CRC));
872 	SET_TX_WRB_HDR_BITS(ipcs, hdr,
873 			    BE_WRB_F_GET(wrb_params->features, IPCS));
874 	SET_TX_WRB_HDR_BITS(tcpcs, hdr,
875 			    BE_WRB_F_GET(wrb_params->features, TCPCS));
876 	SET_TX_WRB_HDR_BITS(udpcs, hdr,
877 			    BE_WRB_F_GET(wrb_params->features, UDPCS));
878 
879 	SET_TX_WRB_HDR_BITS(lso, hdr,
880 			    BE_WRB_F_GET(wrb_params->features, LSO));
881 	SET_TX_WRB_HDR_BITS(lso6, hdr,
882 			    BE_WRB_F_GET(wrb_params->features, LSO6));
883 	SET_TX_WRB_HDR_BITS(lso_mss, hdr, wrb_params->lso_mss);
884 
885 	/* Hack to skip HW VLAN tagging needs evt = 1, compl = 0. When this
886 	 * hack is not needed, the evt bit is set while ringing DB.
887 	 */
888 	SET_TX_WRB_HDR_BITS(event, hdr,
889 			    BE_WRB_F_GET(wrb_params->features, VLAN_SKIP_HW));
890 	SET_TX_WRB_HDR_BITS(vlan, hdr,
891 			    BE_WRB_F_GET(wrb_params->features, VLAN));
892 	SET_TX_WRB_HDR_BITS(vlan_tag, hdr, wrb_params->vlan_tag);
893 
894 	SET_TX_WRB_HDR_BITS(num_wrb, hdr, skb_wrb_cnt(skb));
895 	SET_TX_WRB_HDR_BITS(len, hdr, skb->len);
896 	SET_TX_WRB_HDR_BITS(mgmt, hdr,
897 			    BE_WRB_F_GET(wrb_params->features, OS2BMC));
898 }
899 
900 static void unmap_tx_frag(struct device *dev, struct be_eth_wrb *wrb,
901 			  bool unmap_single)
902 {
903 	dma_addr_t dma;
904 	u32 frag_len = le32_to_cpu(wrb->frag_len);
905 
906 
907 	dma = (u64)le32_to_cpu(wrb->frag_pa_hi) << 32 |
908 		(u64)le32_to_cpu(wrb->frag_pa_lo);
909 	if (frag_len) {
910 		if (unmap_single)
911 			dma_unmap_single(dev, dma, frag_len, DMA_TO_DEVICE);
912 		else
913 			dma_unmap_page(dev, dma, frag_len, DMA_TO_DEVICE);
914 	}
915 }
916 
917 /* Grab a WRB header for xmit */
918 static u32 be_tx_get_wrb_hdr(struct be_tx_obj *txo)
919 {
920 	u32 head = txo->q.head;
921 
922 	queue_head_inc(&txo->q);
923 	return head;
924 }
925 
926 /* Set up the WRB header for xmit */
927 static void be_tx_setup_wrb_hdr(struct be_adapter *adapter,
928 				struct be_tx_obj *txo,
929 				struct be_wrb_params *wrb_params,
930 				struct sk_buff *skb, u16 head)
931 {
932 	u32 num_frags = skb_wrb_cnt(skb);
933 	struct be_queue_info *txq = &txo->q;
934 	struct be_eth_hdr_wrb *hdr = queue_index_node(txq, head);
935 
936 	wrb_fill_hdr(adapter, hdr, wrb_params, skb);
937 	be_dws_cpu_to_le(hdr, sizeof(*hdr));
938 
939 	BUG_ON(txo->sent_skb_list[head]);
940 	txo->sent_skb_list[head] = skb;
941 	txo->last_req_hdr = head;
942 	atomic_add(num_frags, &txq->used);
943 	txo->last_req_wrb_cnt = num_frags;
944 	txo->pend_wrb_cnt += num_frags;
945 }
946 
947 /* Setup a WRB fragment (buffer descriptor) for xmit */
948 static void be_tx_setup_wrb_frag(struct be_tx_obj *txo, dma_addr_t busaddr,
949 				 int len)
950 {
951 	struct be_eth_wrb *wrb;
952 	struct be_queue_info *txq = &txo->q;
953 
954 	wrb = queue_head_node(txq);
955 	wrb_fill(wrb, busaddr, len);
956 	queue_head_inc(txq);
957 }
958 
959 /* Bring the queue back to the state it was in before be_xmit_enqueue() routine
960  * was invoked. The producer index is restored to the previous packet and the
961  * WRBs of the current packet are unmapped. Invoked to handle tx setup errors.
962  */
963 static void be_xmit_restore(struct be_adapter *adapter,
964 			    struct be_tx_obj *txo, u32 head, bool map_single,
965 			    u32 copied)
966 {
967 	struct device *dev;
968 	struct be_eth_wrb *wrb;
969 	struct be_queue_info *txq = &txo->q;
970 
971 	dev = &adapter->pdev->dev;
972 	txq->head = head;
973 
974 	/* skip the first wrb (hdr); it's not mapped */
975 	queue_head_inc(txq);
976 	while (copied) {
977 		wrb = queue_head_node(txq);
978 		unmap_tx_frag(dev, wrb, map_single);
979 		map_single = false;
980 		copied -= le32_to_cpu(wrb->frag_len);
981 		queue_head_inc(txq);
982 	}
983 
984 	txq->head = head;
985 }
986 
987 /* Enqueue the given packet for transmit. This routine allocates WRBs for the
988  * packet, dma maps the packet buffers and sets up the WRBs. Returns the number
989  * of WRBs used up by the packet.
990  */
991 static u32 be_xmit_enqueue(struct be_adapter *adapter, struct be_tx_obj *txo,
992 			   struct sk_buff *skb,
993 			   struct be_wrb_params *wrb_params)
994 {
995 	u32 i, copied = 0, wrb_cnt = skb_wrb_cnt(skb);
996 	struct device *dev = &adapter->pdev->dev;
997 	bool map_single = false;
998 	u32 head;
999 	dma_addr_t busaddr;
1000 	int len;
1001 
1002 	head = be_tx_get_wrb_hdr(txo);
1003 
1004 	if (skb->len > skb->data_len) {
1005 		len = skb_headlen(skb);
1006 
1007 		busaddr = dma_map_single(dev, skb->data, len, DMA_TO_DEVICE);
1008 		if (dma_mapping_error(dev, busaddr))
1009 			goto dma_err;
1010 		map_single = true;
1011 		be_tx_setup_wrb_frag(txo, busaddr, len);
1012 		copied += len;
1013 	}
1014 
1015 	for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1016 		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1017 		len = skb_frag_size(frag);
1018 
1019 		busaddr = skb_frag_dma_map(dev, frag, 0, len, DMA_TO_DEVICE);
1020 		if (dma_mapping_error(dev, busaddr))
1021 			goto dma_err;
1022 		be_tx_setup_wrb_frag(txo, busaddr, len);
1023 		copied += len;
1024 	}
1025 
1026 	be_tx_setup_wrb_hdr(adapter, txo, wrb_params, skb, head);
1027 
1028 	be_tx_stats_update(txo, skb);
1029 	return wrb_cnt;
1030 
1031 dma_err:
1032 	adapter->drv_stats.dma_map_errors++;
1033 	be_xmit_restore(adapter, txo, head, map_single, copied);
1034 	return 0;
1035 }
1036 
1037 static inline int qnq_async_evt_rcvd(struct be_adapter *adapter)
1038 {
1039 	return adapter->flags & BE_FLAGS_QNQ_ASYNC_EVT_RCVD;
1040 }
1041 
1042 static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
1043 					     struct sk_buff *skb,
1044 					     struct be_wrb_params
1045 					     *wrb_params)
1046 {
1047 	bool insert_vlan = false;
1048 	u16 vlan_tag = 0;
1049 
1050 	skb = skb_share_check(skb, GFP_ATOMIC);
1051 	if (unlikely(!skb))
1052 		return skb;
1053 
1054 	if (skb_vlan_tag_present(skb)) {
1055 		vlan_tag = be_get_tx_vlan_tag(adapter, skb);
1056 		insert_vlan = true;
1057 	}
1058 
1059 	if (qnq_async_evt_rcvd(adapter) && adapter->pvid) {
1060 		if (!insert_vlan) {
1061 			vlan_tag = adapter->pvid;
1062 			insert_vlan = true;
1063 		}
1064 		/* f/w workaround to set skip_hw_vlan = 1, informs the F/W to
1065 		 * skip VLAN insertion
1066 		 */
1067 		BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1068 	}
1069 
1070 	if (insert_vlan) {
1071 		skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1072 						vlan_tag);
1073 		if (unlikely(!skb))
1074 			return skb;
1075 		__vlan_hwaccel_clear_tag(skb);
1076 	}
1077 
1078 	/* Insert the outer VLAN, if any */
1079 	if (adapter->qnq_vid) {
1080 		vlan_tag = adapter->qnq_vid;
1081 		skb = vlan_insert_tag_set_proto(skb, htons(ETH_P_8021Q),
1082 						vlan_tag);
1083 		if (unlikely(!skb))
1084 			return skb;
1085 		BE_WRB_F_SET(wrb_params->features, VLAN_SKIP_HW, 1);
1086 	}
1087 
1088 	return skb;
1089 }
1090 
1091 static bool be_ipv6_exthdr_check(struct sk_buff *skb)
1092 {
1093 	struct ethhdr *eh = (struct ethhdr *)skb->data;
1094 	u16 offset = ETH_HLEN;
1095 
1096 	if (eh->h_proto == htons(ETH_P_IPV6)) {
1097 		struct ipv6hdr *ip6h = (struct ipv6hdr *)(skb->data + offset);
1098 
1099 		offset += sizeof(struct ipv6hdr);
1100 		if (ip6h->nexthdr != NEXTHDR_TCP &&
1101 		    ip6h->nexthdr != NEXTHDR_UDP) {
1102 			struct ipv6_opt_hdr *ehdr =
1103 				(struct ipv6_opt_hdr *)(skb->data + offset);
1104 
1105 			/* offending pkt: 2nd byte following IPv6 hdr is 0xff */
1106 			if (ehdr->hdrlen == 0xff)
1107 				return true;
1108 		}
1109 	}
1110 	return false;
1111 }
1112 
1113 static int be_vlan_tag_tx_chk(struct be_adapter *adapter, struct sk_buff *skb)
1114 {
1115 	return skb_vlan_tag_present(skb) || adapter->pvid || adapter->qnq_vid;
1116 }
1117 
1118 static int be_ipv6_tx_stall_chk(struct be_adapter *adapter, struct sk_buff *skb)
1119 {
1120 	return BE3_chip(adapter) && be_ipv6_exthdr_check(skb);
1121 }
1122 
1123 static struct sk_buff *be_lancer_xmit_workarounds(struct be_adapter *adapter,
1124 						  struct sk_buff *skb,
1125 						  struct be_wrb_params
1126 						  *wrb_params)
1127 {
1128 	struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
1129 	unsigned int eth_hdr_len;
1130 	struct iphdr *ip;
1131 
1132 	/* For padded packets, BE HW modifies tot_len field in IP header
1133 	 * incorrecly when VLAN tag is inserted by HW.
1134 	 * For padded packets, Lancer computes incorrect checksum.
1135 	 */
1136 	eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ?
1137 						VLAN_ETH_HLEN : ETH_HLEN;
1138 	if (skb->len <= 60 &&
1139 	    (lancer_chip(adapter) || skb_vlan_tag_present(skb)) &&
1140 	    is_ipv4_pkt(skb)) {
1141 		ip = (struct iphdr *)ip_hdr(skb);
1142 		pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len));
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 
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 
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 
1298 static bool be_send_pkt_to_bmc(struct be_adapter *adapter,
1299 			       struct sk_buff **skb)
1300 {
1301 	struct ethhdr *eh = (struct ethhdr *)(*skb)->data;
1302 	bool os2bmc = false;
1303 
1304 	if (!be_is_os2bmc_enabled(adapter))
1305 		goto done;
1306 
1307 	if (!is_multicast_ether_addr(eh->h_dest))
1308 		goto done;
1309 
1310 	if (is_mc_allowed_on_bmc(adapter, eh) ||
1311 	    is_bc_allowed_on_bmc(adapter, eh) ||
1312 	    is_arp_allowed_on_bmc(adapter, (*skb))) {
1313 		os2bmc = true;
1314 		goto done;
1315 	}
1316 
1317 	if ((*skb)->protocol == htons(ETH_P_IPV6)) {
1318 		struct ipv6hdr *hdr = ipv6_hdr((*skb));
1319 		u8 nexthdr = hdr->nexthdr;
1320 
1321 		if (nexthdr == IPPROTO_ICMPV6) {
1322 			struct icmp6hdr *icmp6 = icmp6_hdr((*skb));
1323 
1324 			switch (icmp6->icmp6_type) {
1325 			case NDISC_ROUTER_ADVERTISEMENT:
1326 				os2bmc = is_ipv6_ra_filt_enabled(adapter);
1327 				goto done;
1328 			case NDISC_NEIGHBOUR_ADVERTISEMENT:
1329 				os2bmc = is_ipv6_na_filt_enabled(adapter);
1330 				goto done;
1331 			default:
1332 				break;
1333 			}
1334 		}
1335 	}
1336 
1337 	if (is_udp_pkt((*skb))) {
1338 		struct udphdr *udp = udp_hdr((*skb));
1339 
1340 		switch (ntohs(udp->dest)) {
1341 		case DHCP_CLIENT_PORT:
1342 			os2bmc = is_dhcp_client_filt_enabled(adapter);
1343 			goto done;
1344 		case DHCP_SERVER_PORT:
1345 			os2bmc = is_dhcp_srvr_filt_enabled(adapter);
1346 			goto done;
1347 		case NET_BIOS_PORT1:
1348 		case NET_BIOS_PORT2:
1349 			os2bmc = is_nbios_filt_enabled(adapter);
1350 			goto done;
1351 		case DHCPV6_RAS_PORT:
1352 			os2bmc = is_ipv6_ras_filt_enabled(adapter);
1353 			goto done;
1354 		default:
1355 			break;
1356 		}
1357 	}
1358 done:
1359 	/* For packets over a vlan, which are destined
1360 	 * to BMC, asic expects the vlan to be inline in the packet.
1361 	 */
1362 	if (os2bmc)
1363 		*skb = be_insert_vlan_in_pkt(adapter, *skb, NULL);
1364 
1365 	return os2bmc;
1366 }
1367 
1368 static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev)
1369 {
1370 	struct be_adapter *adapter = netdev_priv(netdev);
1371 	u16 q_idx = skb_get_queue_mapping(skb);
1372 	struct be_tx_obj *txo = &adapter->tx_obj[q_idx];
1373 	struct be_wrb_params wrb_params = { 0 };
1374 	bool flush = !netdev_xmit_more();
1375 	u16 wrb_cnt;
1376 
1377 	skb = be_xmit_workarounds(adapter, skb, &wrb_params);
1378 	if (unlikely(!skb))
1379 		goto drop;
1380 
1381 	be_get_wrb_params_from_skb(adapter, skb, &wrb_params);
1382 
1383 	wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1384 	if (unlikely(!wrb_cnt)) {
1385 		dev_kfree_skb_any(skb);
1386 		goto drop;
1387 	}
1388 
1389 	/* if os2bmc is enabled and if the pkt is destined to bmc,
1390 	 * enqueue the pkt a 2nd time with mgmt bit set.
1391 	 */
1392 	if (be_send_pkt_to_bmc(adapter, &skb)) {
1393 		BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);
1394 		wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);
1395 		if (unlikely(!wrb_cnt))
1396 			goto drop;
1397 		else
1398 			skb_get(skb);
1399 	}
1400 
1401 	if (be_is_txq_full(txo)) {
1402 		netif_stop_subqueue(netdev, q_idx);
1403 		tx_stats(txo)->tx_stops++;
1404 	}
1405 
1406 	if (flush || __netif_subqueue_stopped(netdev, q_idx))
1407 		be_xmit_flush(adapter, txo);
1408 
1409 	return NETDEV_TX_OK;
1410 drop:
1411 	tx_stats(txo)->tx_drv_drops++;
1412 	/* Flush the already enqueued tx requests */
1413 	if (flush && txo->pend_wrb_cnt)
1414 		be_xmit_flush(adapter, txo);
1415 
1416 	return NETDEV_TX_OK;
1417 }
1418 
1419 static void be_tx_timeout(struct net_device *netdev, unsigned int txqueue)
1420 {
1421 	struct be_adapter *adapter = netdev_priv(netdev);
1422 	struct device *dev = &adapter->pdev->dev;
1423 	struct be_tx_obj *txo;
1424 	struct sk_buff *skb;
1425 	struct tcphdr *tcphdr;
1426 	struct udphdr *udphdr;
1427 	u32 *entry;
1428 	int status;
1429 	int i, j;
1430 
1431 	for_all_tx_queues(adapter, txo, i) {
1432 		dev_info(dev, "TXQ Dump: %d H: %d T: %d used: %d, qid: 0x%x\n",
1433 			 i, txo->q.head, txo->q.tail,
1434 			 atomic_read(&txo->q.used), txo->q.id);
1435 
1436 		entry = txo->q.dma_mem.va;
1437 		for (j = 0; j < TX_Q_LEN * 4; j += 4) {
1438 			if (entry[j] != 0 || entry[j + 1] != 0 ||
1439 			    entry[j + 2] != 0 || entry[j + 3] != 0) {
1440 				dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",
1441 					 j, entry[j], entry[j + 1],
1442 					 entry[j + 2], entry[j + 3]);
1443 			}
1444 		}
1445 
1446 		entry = txo->cq.dma_mem.va;
1447 		dev_info(dev, "TXCQ Dump: %d  H: %d T: %d used: %d\n",
1448 			 i, txo->cq.head, txo->cq.tail,
1449 			 atomic_read(&txo->cq.used));
1450 		for (j = 0; j < TX_CQ_LEN * 4; j += 4) {
1451 			if (entry[j] != 0 || entry[j + 1] != 0 ||
1452 			    entry[j + 2] != 0 || entry[j + 3] != 0) {
1453 				dev_info(dev, "Entry %d 0x%x 0x%x 0x%x 0x%x\n",
1454 					 j, entry[j], entry[j + 1],
1455 					 entry[j + 2], entry[j + 3]);
1456 			}
1457 		}
1458 
1459 		for (j = 0; j < TX_Q_LEN; j++) {
1460 			if (txo->sent_skb_list[j]) {
1461 				skb = txo->sent_skb_list[j];
1462 				if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
1463 					tcphdr = tcp_hdr(skb);
1464 					dev_info(dev, "TCP source port %d\n",
1465 						 ntohs(tcphdr->source));
1466 					dev_info(dev, "TCP dest port %d\n",
1467 						 ntohs(tcphdr->dest));
1468 					dev_info(dev, "TCP sequence num %d\n",
1469 						 ntohs(tcphdr->seq));
1470 					dev_info(dev, "TCP ack_seq %d\n",
1471 						 ntohs(tcphdr->ack_seq));
1472 				} else if (ip_hdr(skb)->protocol ==
1473 					   IPPROTO_UDP) {
1474 					udphdr = udp_hdr(skb);
1475 					dev_info(dev, "UDP source port %d\n",
1476 						 ntohs(udphdr->source));
1477 					dev_info(dev, "UDP dest port %d\n",
1478 						 ntohs(udphdr->dest));
1479 				}
1480 				dev_info(dev, "skb[%d] %p len %d proto 0x%x\n",
1481 					 j, skb, skb->len, skb->protocol);
1482 			}
1483 		}
1484 	}
1485 
1486 	if (lancer_chip(adapter)) {
1487 		dev_info(dev, "Initiating reset due to tx timeout\n");
1488 		dev_info(dev, "Resetting adapter\n");
1489 		status = lancer_physdev_ctrl(adapter,
1490 					     PHYSDEV_CONTROL_FW_RESET_MASK);
1491 		if (status)
1492 			dev_err(dev, "Reset failed .. Reboot server\n");
1493 	}
1494 }
1495 
1496 static inline bool be_in_all_promisc(struct be_adapter *adapter)
1497 {
1498 	return (adapter->if_flags & BE_IF_FLAGS_ALL_PROMISCUOUS) ==
1499 			BE_IF_FLAGS_ALL_PROMISCUOUS;
1500 }
1501 
1502 static int be_set_vlan_promisc(struct be_adapter *adapter)
1503 {
1504 	struct device *dev = &adapter->pdev->dev;
1505 	int status;
1506 
1507 	if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS)
1508 		return 0;
1509 
1510 	status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, ON);
1511 	if (!status) {
1512 		dev_info(dev, "Enabled VLAN promiscuous mode\n");
1513 		adapter->if_flags |= BE_IF_FLAGS_VLAN_PROMISCUOUS;
1514 	} else {
1515 		dev_err(dev, "Failed to enable VLAN promiscuous mode\n");
1516 	}
1517 	return status;
1518 }
1519 
1520 static int be_clear_vlan_promisc(struct be_adapter *adapter)
1521 {
1522 	struct device *dev = &adapter->pdev->dev;
1523 	int status;
1524 
1525 	status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_VLAN_PROMISCUOUS, OFF);
1526 	if (!status) {
1527 		dev_info(dev, "Disabling VLAN promiscuous mode\n");
1528 		adapter->if_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
1529 	}
1530 	return status;
1531 }
1532 
1533 /*
1534  * A max of 64 (BE_NUM_VLANS_SUPPORTED) vlans can be configured in BE.
1535  * If the user configures more, place BE in vlan promiscuous mode.
1536  */
1537 static int be_vid_config(struct be_adapter *adapter)
1538 {
1539 	struct device *dev = &adapter->pdev->dev;
1540 	u16 vids[BE_NUM_VLANS_SUPPORTED];
1541 	u16 num = 0, i = 0;
1542 	int status = 0;
1543 
1544 	/* No need to change the VLAN state if the I/F is in promiscuous */
1545 	if (adapter->netdev->flags & IFF_PROMISC)
1546 		return 0;
1547 
1548 	if (adapter->vlans_added > be_max_vlans(adapter))
1549 		return be_set_vlan_promisc(adapter);
1550 
1551 	if (adapter->if_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
1552 		status = be_clear_vlan_promisc(adapter);
1553 		if (status)
1554 			return status;
1555 	}
1556 	/* Construct VLAN Table to give to HW */
1557 	for_each_set_bit(i, adapter->vids, VLAN_N_VID)
1558 		vids[num++] = cpu_to_le16(i);
1559 
1560 	status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 0);
1561 	if (status) {
1562 		dev_err(dev, "Setting HW VLAN filtering failed\n");
1563 		/* Set to VLAN promisc mode as setting VLAN filter failed */
1564 		if (addl_status(status) == MCC_ADDL_STATUS_INSUFFICIENT_VLANS ||
1565 		    addl_status(status) ==
1566 				MCC_ADDL_STATUS_INSUFFICIENT_RESOURCES)
1567 			return be_set_vlan_promisc(adapter);
1568 	}
1569 	return status;
1570 }
1571 
1572 static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
1573 {
1574 	struct be_adapter *adapter = netdev_priv(netdev);
1575 	int status = 0;
1576 
1577 	mutex_lock(&adapter->rx_filter_lock);
1578 
1579 	/* Packets with VID 0 are always received by Lancer by default */
1580 	if (lancer_chip(adapter) && vid == 0)
1581 		goto done;
1582 
1583 	if (test_bit(vid, adapter->vids))
1584 		goto done;
1585 
1586 	set_bit(vid, adapter->vids);
1587 	adapter->vlans_added++;
1588 
1589 	status = be_vid_config(adapter);
1590 done:
1591 	mutex_unlock(&adapter->rx_filter_lock);
1592 	return status;
1593 }
1594 
1595 static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid)
1596 {
1597 	struct be_adapter *adapter = netdev_priv(netdev);
1598 	int status = 0;
1599 
1600 	mutex_lock(&adapter->rx_filter_lock);
1601 
1602 	/* Packets with VID 0 are always received by Lancer by default */
1603 	if (lancer_chip(adapter) && vid == 0)
1604 		goto done;
1605 
1606 	if (!test_bit(vid, adapter->vids))
1607 		goto done;
1608 
1609 	clear_bit(vid, adapter->vids);
1610 	adapter->vlans_added--;
1611 
1612 	status = be_vid_config(adapter);
1613 done:
1614 	mutex_unlock(&adapter->rx_filter_lock);
1615 	return status;
1616 }
1617 
1618 static void be_set_all_promisc(struct be_adapter *adapter)
1619 {
1620 	be_cmd_rx_filter(adapter, BE_IF_FLAGS_ALL_PROMISCUOUS, ON);
1621 	adapter->if_flags |= BE_IF_FLAGS_ALL_PROMISCUOUS;
1622 }
1623 
1624 static void be_set_mc_promisc(struct be_adapter *adapter)
1625 {
1626 	int status;
1627 
1628 	if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS)
1629 		return;
1630 
1631 	status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MCAST_PROMISCUOUS, ON);
1632 	if (!status)
1633 		adapter->if_flags |= BE_IF_FLAGS_MCAST_PROMISCUOUS;
1634 }
1635 
1636 static void be_set_uc_promisc(struct be_adapter *adapter)
1637 {
1638 	int status;
1639 
1640 	if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS)
1641 		return;
1642 
1643 	status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, ON);
1644 	if (!status)
1645 		adapter->if_flags |= BE_IF_FLAGS_PROMISCUOUS;
1646 }
1647 
1648 static void be_clear_uc_promisc(struct be_adapter *adapter)
1649 {
1650 	int status;
1651 
1652 	if (!(adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS))
1653 		return;
1654 
1655 	status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_PROMISCUOUS, OFF);
1656 	if (!status)
1657 		adapter->if_flags &= ~BE_IF_FLAGS_PROMISCUOUS;
1658 }
1659 
1660 /* The below 2 functions are the callback args for __dev_mc_sync/dev_uc_sync().
1661  * We use a single callback function for both sync and unsync. We really don't
1662  * add/remove addresses through this callback. But, we use it to detect changes
1663  * to the uc/mc lists. The entire uc/mc list is programmed in be_set_rx_mode().
1664  */
1665 static int be_uc_list_update(struct net_device *netdev,
1666 			     const unsigned char *addr)
1667 {
1668 	struct be_adapter *adapter = netdev_priv(netdev);
1669 
1670 	adapter->update_uc_list = true;
1671 	return 0;
1672 }
1673 
1674 static int be_mc_list_update(struct net_device *netdev,
1675 			     const unsigned char *addr)
1676 {
1677 	struct be_adapter *adapter = netdev_priv(netdev);
1678 
1679 	adapter->update_mc_list = true;
1680 	return 0;
1681 }
1682 
1683 static void be_set_mc_list(struct be_adapter *adapter)
1684 {
1685 	struct net_device *netdev = adapter->netdev;
1686 	struct netdev_hw_addr *ha;
1687 	bool mc_promisc = false;
1688 	int status;
1689 
1690 	netif_addr_lock_bh(netdev);
1691 	__dev_mc_sync(netdev, be_mc_list_update, be_mc_list_update);
1692 
1693 	if (netdev->flags & IFF_PROMISC) {
1694 		adapter->update_mc_list = false;
1695 	} else if (netdev->flags & IFF_ALLMULTI ||
1696 		   netdev_mc_count(netdev) > be_max_mc(adapter)) {
1697 		/* Enable multicast promisc if num configured exceeds
1698 		 * what we support
1699 		 */
1700 		mc_promisc = true;
1701 		adapter->update_mc_list = false;
1702 	} else if (adapter->if_flags & BE_IF_FLAGS_MCAST_PROMISCUOUS) {
1703 		/* Update mc-list unconditionally if the iface was previously
1704 		 * in mc-promisc mode and now is out of that mode.
1705 		 */
1706 		adapter->update_mc_list = true;
1707 	}
1708 
1709 	if (adapter->update_mc_list) {
1710 		int i = 0;
1711 
1712 		/* cache the mc-list in adapter */
1713 		netdev_for_each_mc_addr(ha, netdev) {
1714 			ether_addr_copy(adapter->mc_list[i].mac, ha->addr);
1715 			i++;
1716 		}
1717 		adapter->mc_count = netdev_mc_count(netdev);
1718 	}
1719 	netif_addr_unlock_bh(netdev);
1720 
1721 	if (mc_promisc) {
1722 		be_set_mc_promisc(adapter);
1723 	} else if (adapter->update_mc_list) {
1724 		status = be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, ON);
1725 		if (!status)
1726 			adapter->if_flags &= ~BE_IF_FLAGS_MCAST_PROMISCUOUS;
1727 		else
1728 			be_set_mc_promisc(adapter);
1729 
1730 		adapter->update_mc_list = false;
1731 	}
1732 }
1733 
1734 static void be_clear_mc_list(struct be_adapter *adapter)
1735 {
1736 	struct net_device *netdev = adapter->netdev;
1737 
1738 	__dev_mc_unsync(netdev, NULL);
1739 	be_cmd_rx_filter(adapter, BE_IF_FLAGS_MULTICAST, OFF);
1740 	adapter->mc_count = 0;
1741 }
1742 
1743 static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx)
1744 {
1745 	if (ether_addr_equal(adapter->uc_list[uc_idx].mac, adapter->dev_mac)) {
1746 		adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0];
1747 		return 0;
1748 	}
1749 
1750 	return be_cmd_pmac_add(adapter, adapter->uc_list[uc_idx].mac,
1751 			       adapter->if_handle,
1752 			       &adapter->pmac_id[uc_idx + 1], 0);
1753 }
1754 
1755 static void be_uc_mac_del(struct be_adapter *adapter, int pmac_id)
1756 {
1757 	if (pmac_id == adapter->pmac_id[0])
1758 		return;
1759 
1760 	be_cmd_pmac_del(adapter, adapter->if_handle, pmac_id, 0);
1761 }
1762 
1763 static void be_set_uc_list(struct be_adapter *adapter)
1764 {
1765 	struct net_device *netdev = adapter->netdev;
1766 	struct netdev_hw_addr *ha;
1767 	bool uc_promisc = false;
1768 	int curr_uc_macs = 0, i;
1769 
1770 	netif_addr_lock_bh(netdev);
1771 	__dev_uc_sync(netdev, be_uc_list_update, be_uc_list_update);
1772 
1773 	if (netdev->flags & IFF_PROMISC) {
1774 		adapter->update_uc_list = false;
1775 	} else if (netdev_uc_count(netdev) > (be_max_uc(adapter) - 1)) {
1776 		uc_promisc = true;
1777 		adapter->update_uc_list = false;
1778 	}  else if (adapter->if_flags & BE_IF_FLAGS_PROMISCUOUS) {
1779 		/* Update uc-list unconditionally if the iface was previously
1780 		 * in uc-promisc mode and now is out of that mode.
1781 		 */
1782 		adapter->update_uc_list = true;
1783 	}
1784 
1785 	if (adapter->update_uc_list) {
1786 		/* cache the uc-list in adapter array */
1787 		i = 0;
1788 		netdev_for_each_uc_addr(ha, netdev) {
1789 			ether_addr_copy(adapter->uc_list[i].mac, ha->addr);
1790 			i++;
1791 		}
1792 		curr_uc_macs = netdev_uc_count(netdev);
1793 	}
1794 	netif_addr_unlock_bh(netdev);
1795 
1796 	if (uc_promisc) {
1797 		be_set_uc_promisc(adapter);
1798 	} else if (adapter->update_uc_list) {
1799 		be_clear_uc_promisc(adapter);
1800 
1801 		for (i = 0; i < adapter->uc_macs; i++)
1802 			be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1803 
1804 		for (i = 0; i < curr_uc_macs; i++)
1805 			be_uc_mac_add(adapter, i);
1806 		adapter->uc_macs = curr_uc_macs;
1807 		adapter->update_uc_list = false;
1808 	}
1809 }
1810 
1811 static void be_clear_uc_list(struct be_adapter *adapter)
1812 {
1813 	struct net_device *netdev = adapter->netdev;
1814 	int i;
1815 
1816 	__dev_uc_unsync(netdev, NULL);
1817 	for (i = 0; i < adapter->uc_macs; i++)
1818 		be_uc_mac_del(adapter, adapter->pmac_id[i + 1]);
1819 
1820 	adapter->uc_macs = 0;
1821 }
1822 
1823 static void __be_set_rx_mode(struct be_adapter *adapter)
1824 {
1825 	struct net_device *netdev = adapter->netdev;
1826 
1827 	mutex_lock(&adapter->rx_filter_lock);
1828 
1829 	if (netdev->flags & IFF_PROMISC) {
1830 		if (!be_in_all_promisc(adapter))
1831 			be_set_all_promisc(adapter);
1832 	} else if (be_in_all_promisc(adapter)) {
1833 		/* We need to re-program the vlan-list or clear
1834 		 * vlan-promisc mode (if needed) when the interface
1835 		 * comes out of promisc mode.
1836 		 */
1837 		be_vid_config(adapter);
1838 	}
1839 
1840 	be_set_uc_list(adapter);
1841 	be_set_mc_list(adapter);
1842 
1843 	mutex_unlock(&adapter->rx_filter_lock);
1844 }
1845 
1846 static void be_work_set_rx_mode(struct work_struct *work)
1847 {
1848 	struct be_cmd_work *cmd_work =
1849 				container_of(work, struct be_cmd_work, work);
1850 
1851 	__be_set_rx_mode(cmd_work->adapter);
1852 	kfree(cmd_work);
1853 }
1854 
1855 static int be_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
1856 {
1857 	struct be_adapter *adapter = netdev_priv(netdev);
1858 	struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1859 	int status;
1860 
1861 	if (!sriov_enabled(adapter))
1862 		return -EPERM;
1863 
1864 	if (!is_valid_ether_addr(mac) || vf >= adapter->num_vfs)
1865 		return -EINVAL;
1866 
1867 	/* Proceed further only if user provided MAC is different
1868 	 * from active MAC
1869 	 */
1870 	if (ether_addr_equal(mac, vf_cfg->mac_addr))
1871 		return 0;
1872 
1873 	if (BEx_chip(adapter)) {
1874 		be_cmd_pmac_del(adapter, vf_cfg->if_handle, vf_cfg->pmac_id,
1875 				vf + 1);
1876 
1877 		status = be_cmd_pmac_add(adapter, mac, vf_cfg->if_handle,
1878 					 &vf_cfg->pmac_id, vf + 1);
1879 	} else {
1880 		status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
1881 					vf + 1);
1882 	}
1883 
1884 	if (status) {
1885 		dev_err(&adapter->pdev->dev, "MAC %pM set on VF %d Failed: %#x",
1886 			mac, vf, status);
1887 		return be_cmd_status(status);
1888 	}
1889 
1890 	ether_addr_copy(vf_cfg->mac_addr, mac);
1891 
1892 	return 0;
1893 }
1894 
1895 static int be_get_vf_config(struct net_device *netdev, int vf,
1896 			    struct ifla_vf_info *vi)
1897 {
1898 	struct be_adapter *adapter = netdev_priv(netdev);
1899 	struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1900 
1901 	if (!sriov_enabled(adapter))
1902 		return -EPERM;
1903 
1904 	if (vf >= adapter->num_vfs)
1905 		return -EINVAL;
1906 
1907 	vi->vf = vf;
1908 	vi->max_tx_rate = vf_cfg->tx_rate;
1909 	vi->min_tx_rate = 0;
1910 	vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK;
1911 	vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT;
1912 	memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN);
1913 	vi->linkstate = adapter->vf_cfg[vf].plink_tracking;
1914 	vi->spoofchk = adapter->vf_cfg[vf].spoofchk;
1915 
1916 	return 0;
1917 }
1918 
1919 static int be_set_vf_tvt(struct be_adapter *adapter, int vf, u16 vlan)
1920 {
1921 	struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1922 	u16 vids[BE_NUM_VLANS_SUPPORTED];
1923 	int vf_if_id = vf_cfg->if_handle;
1924 	int status;
1925 
1926 	/* Enable Transparent VLAN Tagging */
1927 	status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, vf_if_id, 0, 0);
1928 	if (status)
1929 		return status;
1930 
1931 	/* Clear pre-programmed VLAN filters on VF if any, if TVT is enabled */
1932 	vids[0] = 0;
1933 	status = be_cmd_vlan_config(adapter, vf_if_id, vids, 1, vf + 1);
1934 	if (!status)
1935 		dev_info(&adapter->pdev->dev,
1936 			 "Cleared guest VLANs on VF%d", vf);
1937 
1938 	/* After TVT is enabled, disallow VFs to program VLAN filters */
1939 	if (vf_cfg->privileges & BE_PRIV_FILTMGMT) {
1940 		status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges &
1941 						  ~BE_PRIV_FILTMGMT, vf + 1);
1942 		if (!status)
1943 			vf_cfg->privileges &= ~BE_PRIV_FILTMGMT;
1944 	}
1945 	return 0;
1946 }
1947 
1948 static int be_clear_vf_tvt(struct be_adapter *adapter, int vf)
1949 {
1950 	struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1951 	struct device *dev = &adapter->pdev->dev;
1952 	int status;
1953 
1954 	/* Reset Transparent VLAN Tagging. */
1955 	status = be_cmd_set_hsw_config(adapter, BE_RESET_VLAN_TAG_ID, vf + 1,
1956 				       vf_cfg->if_handle, 0, 0);
1957 	if (status)
1958 		return status;
1959 
1960 	/* Allow VFs to program VLAN filtering */
1961 	if (!(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
1962 		status = be_cmd_set_fn_privileges(adapter, vf_cfg->privileges |
1963 						  BE_PRIV_FILTMGMT, vf + 1);
1964 		if (!status) {
1965 			vf_cfg->privileges |= BE_PRIV_FILTMGMT;
1966 			dev_info(dev, "VF%d: FILTMGMT priv enabled", vf);
1967 		}
1968 	}
1969 
1970 	dev_info(dev,
1971 		 "Disable/re-enable i/f in VM to clear Transparent VLAN tag");
1972 	return 0;
1973 }
1974 
1975 static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
1976 			  __be16 vlan_proto)
1977 {
1978 	struct be_adapter *adapter = netdev_priv(netdev);
1979 	struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
1980 	int status;
1981 
1982 	if (!sriov_enabled(adapter))
1983 		return -EPERM;
1984 
1985 	if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7)
1986 		return -EINVAL;
1987 
1988 	if (vlan_proto != htons(ETH_P_8021Q))
1989 		return -EPROTONOSUPPORT;
1990 
1991 	if (vlan || qos) {
1992 		vlan |= qos << VLAN_PRIO_SHIFT;
1993 		status = be_set_vf_tvt(adapter, vf, vlan);
1994 	} else {
1995 		status = be_clear_vf_tvt(adapter, vf);
1996 	}
1997 
1998 	if (status) {
1999 		dev_err(&adapter->pdev->dev,
2000 			"VLAN %d config on VF %d failed : %#x\n", vlan, vf,
2001 			status);
2002 		return be_cmd_status(status);
2003 	}
2004 
2005 	vf_cfg->vlan_tag = vlan;
2006 	return 0;
2007 }
2008 
2009 static int be_set_vf_tx_rate(struct net_device *netdev, int vf,
2010 			     int min_tx_rate, int max_tx_rate)
2011 {
2012 	struct be_adapter *adapter = netdev_priv(netdev);
2013 	struct device *dev = &adapter->pdev->dev;
2014 	int percent_rate, status = 0;
2015 	u16 link_speed = 0;
2016 	u8 link_status;
2017 
2018 	if (!sriov_enabled(adapter))
2019 		return -EPERM;
2020 
2021 	if (vf >= adapter->num_vfs)
2022 		return -EINVAL;
2023 
2024 	if (min_tx_rate)
2025 		return -EINVAL;
2026 
2027 	if (!max_tx_rate)
2028 		goto config_qos;
2029 
2030 	status = be_cmd_link_status_query(adapter, &link_speed,
2031 					  &link_status, 0);
2032 	if (status)
2033 		goto err;
2034 
2035 	if (!link_status) {
2036 		dev_err(dev, "TX-rate setting not allowed when link is down\n");
2037 		status = -ENETDOWN;
2038 		goto err;
2039 	}
2040 
2041 	if (max_tx_rate < 100 || max_tx_rate > link_speed) {
2042 		dev_err(dev, "TX-rate must be between 100 and %d Mbps\n",
2043 			link_speed);
2044 		status = -EINVAL;
2045 		goto err;
2046 	}
2047 
2048 	/* On Skyhawk the QOS setting must be done only as a % value */
2049 	percent_rate = link_speed / 100;
2050 	if (skyhawk_chip(adapter) && (max_tx_rate % percent_rate)) {
2051 		dev_err(dev, "TX-rate must be a multiple of %d Mbps\n",
2052 			percent_rate);
2053 		status = -EINVAL;
2054 		goto err;
2055 	}
2056 
2057 config_qos:
2058 	status = be_cmd_config_qos(adapter, max_tx_rate, link_speed, vf + 1);
2059 	if (status)
2060 		goto err;
2061 
2062 	adapter->vf_cfg[vf].tx_rate = max_tx_rate;
2063 	return 0;
2064 
2065 err:
2066 	dev_err(dev, "TX-rate setting of %dMbps on VF%d failed\n",
2067 		max_tx_rate, vf);
2068 	return be_cmd_status(status);
2069 }
2070 
2071 static int be_set_vf_link_state(struct net_device *netdev, int vf,
2072 				int link_state)
2073 {
2074 	struct be_adapter *adapter = netdev_priv(netdev);
2075 	int status;
2076 
2077 	if (!sriov_enabled(adapter))
2078 		return -EPERM;
2079 
2080 	if (vf >= adapter->num_vfs)
2081 		return -EINVAL;
2082 
2083 	status = be_cmd_set_logical_link_config(adapter, link_state, vf+1);
2084 	if (status) {
2085 		dev_err(&adapter->pdev->dev,
2086 			"Link state change on VF %d failed: %#x\n", vf, status);
2087 		return be_cmd_status(status);
2088 	}
2089 
2090 	adapter->vf_cfg[vf].plink_tracking = link_state;
2091 
2092 	return 0;
2093 }
2094 
2095 static int be_set_vf_spoofchk(struct net_device *netdev, int vf, bool enable)
2096 {
2097 	struct be_adapter *adapter = netdev_priv(netdev);
2098 	struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf];
2099 	u8 spoofchk;
2100 	int status;
2101 
2102 	if (!sriov_enabled(adapter))
2103 		return -EPERM;
2104 
2105 	if (vf >= adapter->num_vfs)
2106 		return -EINVAL;
2107 
2108 	if (BEx_chip(adapter))
2109 		return -EOPNOTSUPP;
2110 
2111 	if (enable == vf_cfg->spoofchk)
2112 		return 0;
2113 
2114 	spoofchk = enable ? ENABLE_MAC_SPOOFCHK : DISABLE_MAC_SPOOFCHK;
2115 
2116 	status = be_cmd_set_hsw_config(adapter, 0, vf + 1, vf_cfg->if_handle,
2117 				       0, spoofchk);
2118 	if (status) {
2119 		dev_err(&adapter->pdev->dev,
2120 			"Spoofchk change on VF %d failed: %#x\n", vf, status);
2121 		return be_cmd_status(status);
2122 	}
2123 
2124 	vf_cfg->spoofchk = enable;
2125 	return 0;
2126 }
2127 
2128 static void be_aic_update(struct be_aic_obj *aic, u64 rx_pkts, u64 tx_pkts,
2129 			  ulong now)
2130 {
2131 	aic->rx_pkts_prev = rx_pkts;
2132 	aic->tx_reqs_prev = tx_pkts;
2133 	aic->jiffies = now;
2134 }
2135 
2136 static int be_get_new_eqd(struct be_eq_obj *eqo)
2137 {
2138 	struct be_adapter *adapter = eqo->adapter;
2139 	int eqd, start;
2140 	struct be_aic_obj *aic;
2141 	struct be_rx_obj *rxo;
2142 	struct be_tx_obj *txo;
2143 	u64 rx_pkts = 0, tx_pkts = 0;
2144 	ulong now;
2145 	u32 pps, delta;
2146 	int i;
2147 
2148 	aic = &adapter->aic_obj[eqo->idx];
2149 	if (!adapter->aic_enabled) {
2150 		if (aic->jiffies)
2151 			aic->jiffies = 0;
2152 		eqd = aic->et_eqd;
2153 		return eqd;
2154 	}
2155 
2156 	for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
2157 		do {
2158 			start = u64_stats_fetch_begin_irq(&rxo->stats.sync);
2159 			rx_pkts += rxo->stats.rx_pkts;
2160 		} while (u64_stats_fetch_retry_irq(&rxo->stats.sync, start));
2161 	}
2162 
2163 	for_all_tx_queues_on_eq(adapter, eqo, txo, i) {
2164 		do {
2165 			start = u64_stats_fetch_begin_irq(&txo->stats.sync);
2166 			tx_pkts += txo->stats.tx_reqs;
2167 		} while (u64_stats_fetch_retry_irq(&txo->stats.sync, start));
2168 	}
2169 
2170 	/* Skip, if wrapped around or first calculation */
2171 	now = jiffies;
2172 	if (!aic->jiffies || time_before(now, aic->jiffies) ||
2173 	    rx_pkts < aic->rx_pkts_prev ||
2174 	    tx_pkts < aic->tx_reqs_prev) {
2175 		be_aic_update(aic, rx_pkts, tx_pkts, now);
2176 		return aic->prev_eqd;
2177 	}
2178 
2179 	delta = jiffies_to_msecs(now - aic->jiffies);
2180 	if (delta == 0)
2181 		return aic->prev_eqd;
2182 
2183 	pps = (((u32)(rx_pkts - aic->rx_pkts_prev) * 1000) / delta) +
2184 		(((u32)(tx_pkts - aic->tx_reqs_prev) * 1000) / delta);
2185 	eqd = (pps / 15000) << 2;
2186 
2187 	if (eqd < 8)
2188 		eqd = 0;
2189 	eqd = min_t(u32, eqd, aic->max_eqd);
2190 	eqd = max_t(u32, eqd, aic->min_eqd);
2191 
2192 	be_aic_update(aic, rx_pkts, tx_pkts, now);
2193 
2194 	return eqd;
2195 }
2196 
2197 /* For Skyhawk-R only */
2198 static u32 be_get_eq_delay_mult_enc(struct be_eq_obj *eqo)
2199 {
2200 	struct be_adapter *adapter = eqo->adapter;
2201 	struct be_aic_obj *aic = &adapter->aic_obj[eqo->idx];
2202 	ulong now = jiffies;
2203 	int eqd;
2204 	u32 mult_enc;
2205 
2206 	if (!adapter->aic_enabled)
2207 		return 0;
2208 
2209 	if (jiffies_to_msecs(now - aic->jiffies) < 1)
2210 		eqd = aic->prev_eqd;
2211 	else
2212 		eqd = be_get_new_eqd(eqo);
2213 
2214 	if (eqd > 100)
2215 		mult_enc = R2I_DLY_ENC_1;
2216 	else if (eqd > 60)
2217 		mult_enc = R2I_DLY_ENC_2;
2218 	else if (eqd > 20)
2219 		mult_enc = R2I_DLY_ENC_3;
2220 	else
2221 		mult_enc = R2I_DLY_ENC_0;
2222 
2223 	aic->prev_eqd = eqd;
2224 
2225 	return mult_enc;
2226 }
2227 
2228 void be_eqd_update(struct be_adapter *adapter, bool force_update)
2229 {
2230 	struct be_set_eqd set_eqd[MAX_EVT_QS];
2231 	struct be_aic_obj *aic;
2232 	struct be_eq_obj *eqo;
2233 	int i, num = 0, eqd;
2234 
2235 	for_all_evt_queues(adapter, eqo, i) {
2236 		aic = &adapter->aic_obj[eqo->idx];
2237 		eqd = be_get_new_eqd(eqo);
2238 		if (force_update || eqd != aic->prev_eqd) {
2239 			set_eqd[num].delay_multiplier = (eqd * 65)/100;
2240 			set_eqd[num].eq_id = eqo->q.id;
2241 			aic->prev_eqd = eqd;
2242 			num++;
2243 		}
2244 	}
2245 
2246 	if (num)
2247 		be_cmd_modify_eqd(adapter, set_eqd, num);
2248 }
2249 
2250 static void be_rx_stats_update(struct be_rx_obj *rxo,
2251 			       struct be_rx_compl_info *rxcp)
2252 {
2253 	struct be_rx_stats *stats = rx_stats(rxo);
2254 
2255 	u64_stats_update_begin(&stats->sync);
2256 	stats->rx_compl++;
2257 	stats->rx_bytes += rxcp->pkt_size;
2258 	stats->rx_pkts++;
2259 	if (rxcp->tunneled)
2260 		stats->rx_vxlan_offload_pkts++;
2261 	if (rxcp->pkt_type == BE_MULTICAST_PACKET)
2262 		stats->rx_mcast_pkts++;
2263 	if (rxcp->err)
2264 		stats->rx_compl_err++;
2265 	u64_stats_update_end(&stats->sync);
2266 }
2267 
2268 static inline bool csum_passed(struct be_rx_compl_info *rxcp)
2269 {
2270 	/* L4 checksum is not reliable for non TCP/UDP packets.
2271 	 * Also ignore ipcksm for ipv6 pkts
2272 	 */
2273 	return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum &&
2274 		(rxcp->ip_csum || rxcp->ipv6) && !rxcp->err;
2275 }
2276 
2277 static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo)
2278 {
2279 	struct be_adapter *adapter = rxo->adapter;
2280 	struct be_rx_page_info *rx_page_info;
2281 	struct be_queue_info *rxq = &rxo->q;
2282 	u32 frag_idx = rxq->tail;
2283 
2284 	rx_page_info = &rxo->page_info_tbl[frag_idx];
2285 	BUG_ON(!rx_page_info->page);
2286 
2287 	if (rx_page_info->last_frag) {
2288 		dma_unmap_page(&adapter->pdev->dev,
2289 			       dma_unmap_addr(rx_page_info, bus),
2290 			       adapter->big_page_size, DMA_FROM_DEVICE);
2291 		rx_page_info->last_frag = false;
2292 	} else {
2293 		dma_sync_single_for_cpu(&adapter->pdev->dev,
2294 					dma_unmap_addr(rx_page_info, bus),
2295 					rx_frag_size, DMA_FROM_DEVICE);
2296 	}
2297 
2298 	queue_tail_inc(rxq);
2299 	atomic_dec(&rxq->used);
2300 	return rx_page_info;
2301 }
2302 
2303 /* Throwaway the data in the Rx completion */
2304 static void be_rx_compl_discard(struct be_rx_obj *rxo,
2305 				struct be_rx_compl_info *rxcp)
2306 {
2307 	struct be_rx_page_info *page_info;
2308 	u16 i, num_rcvd = rxcp->num_rcvd;
2309 
2310 	for (i = 0; i < num_rcvd; i++) {
2311 		page_info = get_rx_page_info(rxo);
2312 		put_page(page_info->page);
2313 		memset(page_info, 0, sizeof(*page_info));
2314 	}
2315 }
2316 
2317 /*
2318  * skb_fill_rx_data forms a complete skb for an ether frame
2319  * indicated by rxcp.
2320  */
2321 static void skb_fill_rx_data(struct be_rx_obj *rxo, struct sk_buff *skb,
2322 			     struct be_rx_compl_info *rxcp)
2323 {
2324 	struct be_rx_page_info *page_info;
2325 	u16 i, j;
2326 	u16 hdr_len, curr_frag_len, remaining;
2327 	u8 *start;
2328 
2329 	page_info = get_rx_page_info(rxo);
2330 	start = page_address(page_info->page) + page_info->page_offset;
2331 	prefetch(start);
2332 
2333 	/* Copy data in the first descriptor of this completion */
2334 	curr_frag_len = min(rxcp->pkt_size, rx_frag_size);
2335 
2336 	skb->len = curr_frag_len;
2337 	if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
2338 		memcpy(skb->data, start, curr_frag_len);
2339 		/* Complete packet has now been moved to data */
2340 		put_page(page_info->page);
2341 		skb->data_len = 0;
2342 		skb->tail += curr_frag_len;
2343 	} else {
2344 		hdr_len = ETH_HLEN;
2345 		memcpy(skb->data, start, hdr_len);
2346 		skb_shinfo(skb)->nr_frags = 1;
2347 		skb_frag_set_page(skb, 0, page_info->page);
2348 		skb_frag_off_set(&skb_shinfo(skb)->frags[0],
2349 				 page_info->page_offset + hdr_len);
2350 		skb_frag_size_set(&skb_shinfo(skb)->frags[0],
2351 				  curr_frag_len - hdr_len);
2352 		skb->data_len = curr_frag_len - hdr_len;
2353 		skb->truesize += rx_frag_size;
2354 		skb->tail += hdr_len;
2355 	}
2356 	page_info->page = NULL;
2357 
2358 	if (rxcp->pkt_size <= rx_frag_size) {
2359 		BUG_ON(rxcp->num_rcvd != 1);
2360 		return;
2361 	}
2362 
2363 	/* More frags present for this completion */
2364 	remaining = rxcp->pkt_size - curr_frag_len;
2365 	for (i = 1, j = 0; i < rxcp->num_rcvd; i++) {
2366 		page_info = get_rx_page_info(rxo);
2367 		curr_frag_len = min(remaining, rx_frag_size);
2368 
2369 		/* Coalesce all frags from the same physical page in one slot */
2370 		if (page_info->page_offset == 0) {
2371 			/* Fresh page */
2372 			j++;
2373 			skb_frag_set_page(skb, j, page_info->page);
2374 			skb_frag_off_set(&skb_shinfo(skb)->frags[j],
2375 					 page_info->page_offset);
2376 			skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2377 			skb_shinfo(skb)->nr_frags++;
2378 		} else {
2379 			put_page(page_info->page);
2380 		}
2381 
2382 		skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2383 		skb->len += curr_frag_len;
2384 		skb->data_len += curr_frag_len;
2385 		skb->truesize += rx_frag_size;
2386 		remaining -= curr_frag_len;
2387 		page_info->page = NULL;
2388 	}
2389 	BUG_ON(j > MAX_SKB_FRAGS);
2390 }
2391 
2392 /* Process the RX completion indicated by rxcp when GRO is disabled */
2393 static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi,
2394 				struct be_rx_compl_info *rxcp)
2395 {
2396 	struct be_adapter *adapter = rxo->adapter;
2397 	struct net_device *netdev = adapter->netdev;
2398 	struct sk_buff *skb;
2399 
2400 	skb = netdev_alloc_skb_ip_align(netdev, BE_RX_SKB_ALLOC_SIZE);
2401 	if (unlikely(!skb)) {
2402 		rx_stats(rxo)->rx_drops_no_skbs++;
2403 		be_rx_compl_discard(rxo, rxcp);
2404 		return;
2405 	}
2406 
2407 	skb_fill_rx_data(rxo, skb, rxcp);
2408 
2409 	if (likely((netdev->features & NETIF_F_RXCSUM) && csum_passed(rxcp)))
2410 		skb->ip_summed = CHECKSUM_UNNECESSARY;
2411 	else
2412 		skb_checksum_none_assert(skb);
2413 
2414 	skb->protocol = eth_type_trans(skb, netdev);
2415 	skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2416 	if (netdev->features & NETIF_F_RXHASH)
2417 		skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2418 
2419 	skb->csum_level = rxcp->tunneled;
2420 	skb_mark_napi_id(skb, napi);
2421 
2422 	if (rxcp->vlanf)
2423 		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2424 
2425 	netif_receive_skb(skb);
2426 }
2427 
2428 /* Process the RX completion indicated by rxcp when GRO is enabled */
2429 static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
2430 				    struct napi_struct *napi,
2431 				    struct be_rx_compl_info *rxcp)
2432 {
2433 	struct be_adapter *adapter = rxo->adapter;
2434 	struct be_rx_page_info *page_info;
2435 	struct sk_buff *skb = NULL;
2436 	u16 remaining, curr_frag_len;
2437 	u16 i, j;
2438 
2439 	skb = napi_get_frags(napi);
2440 	if (!skb) {
2441 		be_rx_compl_discard(rxo, rxcp);
2442 		return;
2443 	}
2444 
2445 	remaining = rxcp->pkt_size;
2446 	for (i = 0, j = -1; i < rxcp->num_rcvd; i++) {
2447 		page_info = get_rx_page_info(rxo);
2448 
2449 		curr_frag_len = min(remaining, rx_frag_size);
2450 
2451 		/* Coalesce all frags from the same physical page in one slot */
2452 		if (i == 0 || page_info->page_offset == 0) {
2453 			/* First frag or Fresh page */
2454 			j++;
2455 			skb_frag_set_page(skb, j, page_info->page);
2456 			skb_frag_off_set(&skb_shinfo(skb)->frags[j],
2457 					 page_info->page_offset);
2458 			skb_frag_size_set(&skb_shinfo(skb)->frags[j], 0);
2459 		} else {
2460 			put_page(page_info->page);
2461 		}
2462 		skb_frag_size_add(&skb_shinfo(skb)->frags[j], curr_frag_len);
2463 		skb->truesize += rx_frag_size;
2464 		remaining -= curr_frag_len;
2465 		memset(page_info, 0, sizeof(*page_info));
2466 	}
2467 	BUG_ON(j > MAX_SKB_FRAGS);
2468 
2469 	skb_shinfo(skb)->nr_frags = j + 1;
2470 	skb->len = rxcp->pkt_size;
2471 	skb->data_len = rxcp->pkt_size;
2472 	skb->ip_summed = CHECKSUM_UNNECESSARY;
2473 	skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]);
2474 	if (adapter->netdev->features & NETIF_F_RXHASH)
2475 		skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
2476 
2477 	skb->csum_level = rxcp->tunneled;
2478 
2479 	if (rxcp->vlanf)
2480 		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
2481 
2482 	napi_gro_frags(napi);
2483 }
2484 
2485 static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl,
2486 				 struct be_rx_compl_info *rxcp)
2487 {
2488 	rxcp->pkt_size = GET_RX_COMPL_V1_BITS(pktsize, compl);
2489 	rxcp->vlanf = GET_RX_COMPL_V1_BITS(vtp, compl);
2490 	rxcp->err = GET_RX_COMPL_V1_BITS(err, compl);
2491 	rxcp->tcpf = GET_RX_COMPL_V1_BITS(tcpf, compl);
2492 	rxcp->udpf = GET_RX_COMPL_V1_BITS(udpf, compl);
2493 	rxcp->ip_csum = GET_RX_COMPL_V1_BITS(ipcksm, compl);
2494 	rxcp->l4_csum = GET_RX_COMPL_V1_BITS(l4_cksm, compl);
2495 	rxcp->ipv6 = GET_RX_COMPL_V1_BITS(ip_version, compl);
2496 	rxcp->num_rcvd = GET_RX_COMPL_V1_BITS(numfrags, compl);
2497 	rxcp->pkt_type = GET_RX_COMPL_V1_BITS(cast_enc, compl);
2498 	rxcp->rss_hash = GET_RX_COMPL_V1_BITS(rsshash, compl);
2499 	if (rxcp->vlanf) {
2500 		rxcp->qnq = GET_RX_COMPL_V1_BITS(qnq, compl);
2501 		rxcp->vlan_tag = GET_RX_COMPL_V1_BITS(vlan_tag, compl);
2502 	}
2503 	rxcp->port = GET_RX_COMPL_V1_BITS(port, compl);
2504 	rxcp->tunneled =
2505 		GET_RX_COMPL_V1_BITS(tunneled, compl);
2506 }
2507 
2508 static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl,
2509 				 struct be_rx_compl_info *rxcp)
2510 {
2511 	rxcp->pkt_size = GET_RX_COMPL_V0_BITS(pktsize, compl);
2512 	rxcp->vlanf = GET_RX_COMPL_V0_BITS(vtp, compl);
2513 	rxcp->err = GET_RX_COMPL_V0_BITS(err, compl);
2514 	rxcp->tcpf = GET_RX_COMPL_V0_BITS(tcpf, compl);
2515 	rxcp->udpf = GET_RX_COMPL_V0_BITS(udpf, compl);
2516 	rxcp->ip_csum = GET_RX_COMPL_V0_BITS(ipcksm, compl);
2517 	rxcp->l4_csum = GET_RX_COMPL_V0_BITS(l4_cksm, compl);
2518 	rxcp->ipv6 = GET_RX_COMPL_V0_BITS(ip_version, compl);
2519 	rxcp->num_rcvd = GET_RX_COMPL_V0_BITS(numfrags, compl);
2520 	rxcp->pkt_type = GET_RX_COMPL_V0_BITS(cast_enc, compl);
2521 	rxcp->rss_hash = GET_RX_COMPL_V0_BITS(rsshash, compl);
2522 	if (rxcp->vlanf) {
2523 		rxcp->qnq = GET_RX_COMPL_V0_BITS(qnq, compl);
2524 		rxcp->vlan_tag = GET_RX_COMPL_V0_BITS(vlan_tag, compl);
2525 	}
2526 	rxcp->port = GET_RX_COMPL_V0_BITS(port, compl);
2527 	rxcp->ip_frag = GET_RX_COMPL_V0_BITS(ip_frag, compl);
2528 }
2529 
2530 static struct be_rx_compl_info *be_rx_compl_get(struct be_rx_obj *rxo)
2531 {
2532 	struct be_eth_rx_compl *compl = queue_tail_node(&rxo->cq);
2533 	struct be_rx_compl_info *rxcp = &rxo->rxcp;
2534 	struct be_adapter *adapter = rxo->adapter;
2535 
2536 	/* For checking the valid bit it is Ok to use either definition as the
2537 	 * valid bit is at the same position in both v0 and v1 Rx compl */
2538 	if (compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] == 0)
2539 		return NULL;
2540 
2541 	rmb();
2542 	be_dws_le_to_cpu(compl, sizeof(*compl));
2543 
2544 	if (adapter->be3_native)
2545 		be_parse_rx_compl_v1(compl, rxcp);
2546 	else
2547 		be_parse_rx_compl_v0(compl, rxcp);
2548 
2549 	if (rxcp->ip_frag)
2550 		rxcp->l4_csum = 0;
2551 
2552 	if (rxcp->vlanf) {
2553 		/* In QNQ modes, if qnq bit is not set, then the packet was
2554 		 * tagged only with the transparent outer vlan-tag and must
2555 		 * not be treated as a vlan packet by host
2556 		 */
2557 		if (be_is_qnq_mode(adapter) && !rxcp->qnq)
2558 			rxcp->vlanf = 0;
2559 
2560 		if (!lancer_chip(adapter))
2561 			rxcp->vlan_tag = swab16(rxcp->vlan_tag);
2562 
2563 		if (adapter->pvid == (rxcp->vlan_tag & VLAN_VID_MASK) &&
2564 		    !test_bit(rxcp->vlan_tag, adapter->vids))
2565 			rxcp->vlanf = 0;
2566 	}
2567 
2568 	/* As the compl has been parsed, reset it; we wont touch it again */
2569 	compl->dw[offsetof(struct amap_eth_rx_compl_v1, valid) / 32] = 0;
2570 
2571 	queue_tail_inc(&rxo->cq);
2572 	return rxcp;
2573 }
2574 
2575 static inline struct page *be_alloc_pages(u32 size, gfp_t gfp)
2576 {
2577 	u32 order = get_order(size);
2578 
2579 	if (order > 0)
2580 		gfp |= __GFP_COMP;
2581 	return  alloc_pages(gfp, order);
2582 }
2583 
2584 /*
2585  * Allocate a page, split it to fragments of size rx_frag_size and post as
2586  * receive buffers to BE
2587  */
2588 static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp, u32 frags_needed)
2589 {
2590 	struct be_adapter *adapter = rxo->adapter;
2591 	struct be_rx_page_info *page_info = NULL, *prev_page_info = NULL;
2592 	struct be_queue_info *rxq = &rxo->q;
2593 	struct page *pagep = NULL;
2594 	struct device *dev = &adapter->pdev->dev;
2595 	struct be_eth_rx_d *rxd;
2596 	u64 page_dmaaddr = 0, frag_dmaaddr;
2597 	u32 posted, page_offset = 0, notify = 0;
2598 
2599 	page_info = &rxo->page_info_tbl[rxq->head];
2600 	for (posted = 0; posted < frags_needed && !page_info->page; posted++) {
2601 		if (!pagep) {
2602 			pagep = be_alloc_pages(adapter->big_page_size, gfp);
2603 			if (unlikely(!pagep)) {
2604 				rx_stats(rxo)->rx_post_fail++;
2605 				break;
2606 			}
2607 			page_dmaaddr = dma_map_page(dev, pagep, 0,
2608 						    adapter->big_page_size,
2609 						    DMA_FROM_DEVICE);
2610 			if (dma_mapping_error(dev, page_dmaaddr)) {
2611 				put_page(pagep);
2612 				pagep = NULL;
2613 				adapter->drv_stats.dma_map_errors++;
2614 				break;
2615 			}
2616 			page_offset = 0;
2617 		} else {
2618 			get_page(pagep);
2619 			page_offset += rx_frag_size;
2620 		}
2621 		page_info->page_offset = page_offset;
2622 		page_info->page = pagep;
2623 
2624 		rxd = queue_head_node(rxq);
2625 		frag_dmaaddr = page_dmaaddr + page_info->page_offset;
2626 		rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
2627 		rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
2628 
2629 		/* Any space left in the current big page for another frag? */
2630 		if ((page_offset + rx_frag_size + rx_frag_size) >
2631 					adapter->big_page_size) {
2632 			pagep = NULL;
2633 			page_info->last_frag = true;
2634 			dma_unmap_addr_set(page_info, bus, page_dmaaddr);
2635 		} else {
2636 			dma_unmap_addr_set(page_info, bus, frag_dmaaddr);
2637 		}
2638 
2639 		prev_page_info = page_info;
2640 		queue_head_inc(rxq);
2641 		page_info = &rxo->page_info_tbl[rxq->head];
2642 	}
2643 
2644 	/* Mark the last frag of a page when we break out of the above loop
2645 	 * with no more slots available in the RXQ
2646 	 */
2647 	if (pagep) {
2648 		prev_page_info->last_frag = true;
2649 		dma_unmap_addr_set(prev_page_info, bus, page_dmaaddr);
2650 	}
2651 
2652 	if (posted) {
2653 		atomic_add(posted, &rxq->used);
2654 		if (rxo->rx_post_starved)
2655 			rxo->rx_post_starved = false;
2656 		do {
2657 			notify = min(MAX_NUM_POST_ERX_DB, posted);
2658 			be_rxq_notify(adapter, rxq->id, notify);
2659 			posted -= notify;
2660 		} while (posted);
2661 	} else if (atomic_read(&rxq->used) == 0) {
2662 		/* Let be_worker replenish when memory is available */
2663 		rxo->rx_post_starved = true;
2664 	}
2665 }
2666 
2667 static inline void be_update_tx_err(struct be_tx_obj *txo, u8 status)
2668 {
2669 	switch (status) {
2670 	case BE_TX_COMP_HDR_PARSE_ERR:
2671 		tx_stats(txo)->tx_hdr_parse_err++;
2672 		break;
2673 	case BE_TX_COMP_NDMA_ERR:
2674 		tx_stats(txo)->tx_dma_err++;
2675 		break;
2676 	case BE_TX_COMP_ACL_ERR:
2677 		tx_stats(txo)->tx_spoof_check_err++;
2678 		break;
2679 	}
2680 }
2681 
2682 static inline void lancer_update_tx_err(struct be_tx_obj *txo, u8 status)
2683 {
2684 	switch (status) {
2685 	case LANCER_TX_COMP_LSO_ERR:
2686 		tx_stats(txo)->tx_tso_err++;
2687 		break;
2688 	case LANCER_TX_COMP_HSW_DROP_MAC_ERR:
2689 	case LANCER_TX_COMP_HSW_DROP_VLAN_ERR:
2690 		tx_stats(txo)->tx_spoof_check_err++;
2691 		break;
2692 	case LANCER_TX_COMP_QINQ_ERR:
2693 		tx_stats(txo)->tx_qinq_err++;
2694 		break;
2695 	case LANCER_TX_COMP_PARITY_ERR:
2696 		tx_stats(txo)->tx_internal_parity_err++;
2697 		break;
2698 	case LANCER_TX_COMP_DMA_ERR:
2699 		tx_stats(txo)->tx_dma_err++;
2700 		break;
2701 	case LANCER_TX_COMP_SGE_ERR:
2702 		tx_stats(txo)->tx_sge_err++;
2703 		break;
2704 	}
2705 }
2706 
2707 static struct be_tx_compl_info *be_tx_compl_get(struct be_adapter *adapter,
2708 						struct be_tx_obj *txo)
2709 {
2710 	struct be_queue_info *tx_cq = &txo->cq;
2711 	struct be_tx_compl_info *txcp = &txo->txcp;
2712 	struct be_eth_tx_compl *compl = queue_tail_node(tx_cq);
2713 
2714 	if (compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
2715 		return NULL;
2716 
2717 	/* Ensure load ordering of valid bit dword and other dwords below */
2718 	rmb();
2719 	be_dws_le_to_cpu(compl, sizeof(*compl));
2720 
2721 	txcp->status = GET_TX_COMPL_BITS(status, compl);
2722 	txcp->end_index = GET_TX_COMPL_BITS(wrb_index, compl);
2723 
2724 	if (txcp->status) {
2725 		if (lancer_chip(adapter)) {
2726 			lancer_update_tx_err(txo, txcp->status);
2727 			/* Reset the adapter incase of TSO,
2728 			 * SGE or Parity error
2729 			 */
2730 			if (txcp->status == LANCER_TX_COMP_LSO_ERR ||
2731 			    txcp->status == LANCER_TX_COMP_PARITY_ERR ||
2732 			    txcp->status == LANCER_TX_COMP_SGE_ERR)
2733 				be_set_error(adapter, BE_ERROR_TX);
2734 		} else {
2735 			be_update_tx_err(txo, txcp->status);
2736 		}
2737 	}
2738 
2739 	if (be_check_error(adapter, BE_ERROR_TX))
2740 		return NULL;
2741 
2742 	compl->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
2743 	queue_tail_inc(tx_cq);
2744 	return txcp;
2745 }
2746 
2747 static u16 be_tx_compl_process(struct be_adapter *adapter,
2748 			       struct be_tx_obj *txo, u16 last_index)
2749 {
2750 	struct sk_buff **sent_skbs = txo->sent_skb_list;
2751 	struct be_queue_info *txq = &txo->q;
2752 	struct sk_buff *skb = NULL;
2753 	bool unmap_skb_hdr = false;
2754 	struct be_eth_wrb *wrb;
2755 	u16 num_wrbs = 0;
2756 	u32 frag_index;
2757 
2758 	do {
2759 		if (sent_skbs[txq->tail]) {
2760 			/* Free skb from prev req */
2761 			if (skb)
2762 				dev_consume_skb_any(skb);
2763 			skb = sent_skbs[txq->tail];
2764 			sent_skbs[txq->tail] = NULL;
2765 			queue_tail_inc(txq);  /* skip hdr wrb */
2766 			num_wrbs++;
2767 			unmap_skb_hdr = true;
2768 		}
2769 		wrb = queue_tail_node(txq);
2770 		frag_index = txq->tail;
2771 		unmap_tx_frag(&adapter->pdev->dev, wrb,
2772 			      (unmap_skb_hdr && skb_headlen(skb)));
2773 		unmap_skb_hdr = false;
2774 		queue_tail_inc(txq);
2775 		num_wrbs++;
2776 	} while (frag_index != last_index);
2777 	dev_consume_skb_any(skb);
2778 
2779 	return num_wrbs;
2780 }
2781 
2782 /* Return the number of events in the event queue */
2783 static inline int events_get(struct be_eq_obj *eqo)
2784 {
2785 	struct be_eq_entry *eqe;
2786 	int num = 0;
2787 
2788 	do {
2789 		eqe = queue_tail_node(&eqo->q);
2790 		if (eqe->evt == 0)
2791 			break;
2792 
2793 		rmb();
2794 		eqe->evt = 0;
2795 		num++;
2796 		queue_tail_inc(&eqo->q);
2797 	} while (true);
2798 
2799 	return num;
2800 }
2801 
2802 /* Leaves the EQ is disarmed state */
2803 static void be_eq_clean(struct be_eq_obj *eqo)
2804 {
2805 	int num = events_get(eqo);
2806 
2807 	be_eq_notify(eqo->adapter, eqo->q.id, false, true, num, 0);
2808 }
2809 
2810 /* Free posted rx buffers that were not used */
2811 static void be_rxq_clean(struct be_rx_obj *rxo)
2812 {
2813 	struct be_queue_info *rxq = &rxo->q;
2814 	struct be_rx_page_info *page_info;
2815 
2816 	while (atomic_read(&rxq->used) > 0) {
2817 		page_info = get_rx_page_info(rxo);
2818 		put_page(page_info->page);
2819 		memset(page_info, 0, sizeof(*page_info));
2820 	}
2821 	BUG_ON(atomic_read(&rxq->used));
2822 	rxq->tail = 0;
2823 	rxq->head = 0;
2824 }
2825 
2826 static void be_rx_cq_clean(struct be_rx_obj *rxo)
2827 {
2828 	struct be_queue_info *rx_cq = &rxo->cq;
2829 	struct be_rx_compl_info *rxcp;
2830 	struct be_adapter *adapter = rxo->adapter;
2831 	int flush_wait = 0;
2832 
2833 	/* Consume pending rx completions.
2834 	 * Wait for the flush completion (identified by zero num_rcvd)
2835 	 * to arrive. Notify CQ even when there are no more CQ entries
2836 	 * for HW to flush partially coalesced CQ entries.
2837 	 * In Lancer, there is no need to wait for flush compl.
2838 	 */
2839 	for (;;) {
2840 		rxcp = be_rx_compl_get(rxo);
2841 		if (!rxcp) {
2842 			if (lancer_chip(adapter))
2843 				break;
2844 
2845 			if (flush_wait++ > 50 ||
2846 			    be_check_error(adapter,
2847 					   BE_ERROR_HW)) {
2848 				dev_warn(&adapter->pdev->dev,
2849 					 "did not receive flush compl\n");
2850 				break;
2851 			}
2852 			be_cq_notify(adapter, rx_cq->id, true, 0);
2853 			mdelay(1);
2854 		} else {
2855 			be_rx_compl_discard(rxo, rxcp);
2856 			be_cq_notify(adapter, rx_cq->id, false, 1);
2857 			if (rxcp->num_rcvd == 0)
2858 				break;
2859 		}
2860 	}
2861 
2862 	/* After cleanup, leave the CQ in unarmed state */
2863 	be_cq_notify(adapter, rx_cq->id, false, 0);
2864 }
2865 
2866 static void be_tx_compl_clean(struct be_adapter *adapter)
2867 {
2868 	struct device *dev = &adapter->pdev->dev;
2869 	u16 cmpl = 0, timeo = 0, num_wrbs = 0;
2870 	struct be_tx_compl_info *txcp;
2871 	struct be_queue_info *txq;
2872 	u32 end_idx, notified_idx;
2873 	struct be_tx_obj *txo;
2874 	int i, pending_txqs;
2875 
2876 	/* Stop polling for compls when HW has been silent for 10ms */
2877 	do {
2878 		pending_txqs = adapter->num_tx_qs;
2879 
2880 		for_all_tx_queues(adapter, txo, i) {
2881 			cmpl = 0;
2882 			num_wrbs = 0;
2883 			txq = &txo->q;
2884 			while ((txcp = be_tx_compl_get(adapter, txo))) {
2885 				num_wrbs +=
2886 					be_tx_compl_process(adapter, txo,
2887 							    txcp->end_index);
2888 				cmpl++;
2889 			}
2890 			if (cmpl) {
2891 				be_cq_notify(adapter, txo->cq.id, false, cmpl);
2892 				atomic_sub(num_wrbs, &txq->used);
2893 				timeo = 0;
2894 			}
2895 			if (!be_is_tx_compl_pending(txo))
2896 				pending_txqs--;
2897 		}
2898 
2899 		if (pending_txqs == 0 || ++timeo > 10 ||
2900 		    be_check_error(adapter, BE_ERROR_HW))
2901 			break;
2902 
2903 		mdelay(1);
2904 	} while (true);
2905 
2906 	/* Free enqueued TX that was never notified to HW */
2907 	for_all_tx_queues(adapter, txo, i) {
2908 		txq = &txo->q;
2909 
2910 		if (atomic_read(&txq->used)) {
2911 			dev_info(dev, "txq%d: cleaning %d pending tx-wrbs\n",
2912 				 i, atomic_read(&txq->used));
2913 			notified_idx = txq->tail;
2914 			end_idx = txq->tail;
2915 			index_adv(&end_idx, atomic_read(&txq->used) - 1,
2916 				  txq->len);
2917 			/* Use the tx-compl process logic to handle requests
2918 			 * that were not sent to the HW.
2919 			 */
2920 			num_wrbs = be_tx_compl_process(adapter, txo, end_idx);
2921 			atomic_sub(num_wrbs, &txq->used);
2922 			BUG_ON(atomic_read(&txq->used));
2923 			txo->pend_wrb_cnt = 0;
2924 			/* Since hw was never notified of these requests,
2925 			 * reset TXQ indices
2926 			 */
2927 			txq->head = notified_idx;
2928 			txq->tail = notified_idx;
2929 		}
2930 	}
2931 }
2932 
2933 static void be_evt_queues_destroy(struct be_adapter *adapter)
2934 {
2935 	struct be_eq_obj *eqo;
2936 	int i;
2937 
2938 	for_all_evt_queues(adapter, eqo, i) {
2939 		if (eqo->q.created) {
2940 			be_eq_clean(eqo);
2941 			be_cmd_q_destroy(adapter, &eqo->q, QTYPE_EQ);
2942 			netif_napi_del(&eqo->napi);
2943 			free_cpumask_var(eqo->affinity_mask);
2944 		}
2945 		be_queue_free(adapter, &eqo->q);
2946 	}
2947 }
2948 
2949 static int be_evt_queues_create(struct be_adapter *adapter)
2950 {
2951 	struct be_queue_info *eq;
2952 	struct be_eq_obj *eqo;
2953 	struct be_aic_obj *aic;
2954 	int i, rc;
2955 
2956 	/* need enough EQs to service both RX and TX queues */
2957 	adapter->num_evt_qs = min_t(u16, num_irqs(adapter),
2958 				    max(adapter->cfg_num_rx_irqs,
2959 					adapter->cfg_num_tx_irqs));
2960 
2961 	adapter->aic_enabled = true;
2962 
2963 	for_all_evt_queues(adapter, eqo, i) {
2964 		int numa_node = dev_to_node(&adapter->pdev->dev);
2965 
2966 		aic = &adapter->aic_obj[i];
2967 		eqo->adapter = adapter;
2968 		eqo->idx = i;
2969 		aic->max_eqd = BE_MAX_EQD;
2970 
2971 		eq = &eqo->q;
2972 		rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
2973 				    sizeof(struct be_eq_entry));
2974 		if (rc)
2975 			return rc;
2976 
2977 		rc = be_cmd_eq_create(adapter, eqo);
2978 		if (rc)
2979 			return rc;
2980 
2981 		if (!zalloc_cpumask_var(&eqo->affinity_mask, GFP_KERNEL))
2982 			return -ENOMEM;
2983 		cpumask_set_cpu(cpumask_local_spread(i, numa_node),
2984 				eqo->affinity_mask);
2985 		netif_napi_add(adapter->netdev, &eqo->napi, be_poll,
2986 			       NAPI_POLL_WEIGHT);
2987 	}
2988 	return 0;
2989 }
2990 
2991 static void be_mcc_queues_destroy(struct be_adapter *adapter)
2992 {
2993 	struct be_queue_info *q;
2994 
2995 	q = &adapter->mcc_obj.q;
2996 	if (q->created)
2997 		be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
2998 	be_queue_free(adapter, q);
2999 
3000 	q = &adapter->mcc_obj.cq;
3001 	if (q->created)
3002 		be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3003 	be_queue_free(adapter, q);
3004 }
3005 
3006 /* Must be called only after TX qs are created as MCC shares TX EQ */
3007 static int be_mcc_queues_create(struct be_adapter *adapter)
3008 {
3009 	struct be_queue_info *q, *cq;
3010 
3011 	cq = &adapter->mcc_obj.cq;
3012 	if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
3013 			   sizeof(struct be_mcc_compl)))
3014 		goto err;
3015 
3016 	/* Use the default EQ for MCC completions */
3017 	if (be_cmd_cq_create(adapter, cq, &mcc_eqo(adapter)->q, true, 0))
3018 		goto mcc_cq_free;
3019 
3020 	q = &adapter->mcc_obj.q;
3021 	if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
3022 		goto mcc_cq_destroy;
3023 
3024 	if (be_cmd_mccq_create(adapter, q, cq))
3025 		goto mcc_q_free;
3026 
3027 	return 0;
3028 
3029 mcc_q_free:
3030 	be_queue_free(adapter, q);
3031 mcc_cq_destroy:
3032 	be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
3033 mcc_cq_free:
3034 	be_queue_free(adapter, cq);
3035 err:
3036 	return -1;
3037 }
3038 
3039 static void be_tx_queues_destroy(struct be_adapter *adapter)
3040 {
3041 	struct be_queue_info *q;
3042 	struct be_tx_obj *txo;
3043 	u8 i;
3044 
3045 	for_all_tx_queues(adapter, txo, i) {
3046 		q = &txo->q;
3047 		if (q->created)
3048 			be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
3049 		be_queue_free(adapter, q);
3050 
3051 		q = &txo->cq;
3052 		if (q->created)
3053 			be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3054 		be_queue_free(adapter, q);
3055 	}
3056 }
3057 
3058 static int be_tx_qs_create(struct be_adapter *adapter)
3059 {
3060 	struct be_queue_info *cq;
3061 	struct be_tx_obj *txo;
3062 	struct be_eq_obj *eqo;
3063 	int status, i;
3064 
3065 	adapter->num_tx_qs = min(adapter->num_evt_qs, adapter->cfg_num_tx_irqs);
3066 
3067 	for_all_tx_queues(adapter, txo, i) {
3068 		cq = &txo->cq;
3069 		status = be_queue_alloc(adapter, cq, TX_CQ_LEN,
3070 					sizeof(struct be_eth_tx_compl));
3071 		if (status)
3072 			return status;
3073 
3074 		u64_stats_init(&txo->stats.sync);
3075 		u64_stats_init(&txo->stats.sync_compl);
3076 
3077 		/* If num_evt_qs is less than num_tx_qs, then more than
3078 		 * one txq share an eq
3079 		 */
3080 		eqo = &adapter->eq_obj[i % adapter->num_evt_qs];
3081 		status = be_cmd_cq_create(adapter, cq, &eqo->q, false, 3);
3082 		if (status)
3083 			return status;
3084 
3085 		status = be_queue_alloc(adapter, &txo->q, TX_Q_LEN,
3086 					sizeof(struct be_eth_wrb));
3087 		if (status)
3088 			return status;
3089 
3090 		status = be_cmd_txq_create(adapter, txo);
3091 		if (status)
3092 			return status;
3093 
3094 		netif_set_xps_queue(adapter->netdev, eqo->affinity_mask,
3095 				    eqo->idx);
3096 	}
3097 
3098 	dev_info(&adapter->pdev->dev, "created %d TX queue(s)\n",
3099 		 adapter->num_tx_qs);
3100 	return 0;
3101 }
3102 
3103 static void be_rx_cqs_destroy(struct be_adapter *adapter)
3104 {
3105 	struct be_queue_info *q;
3106 	struct be_rx_obj *rxo;
3107 	int i;
3108 
3109 	for_all_rx_queues(adapter, rxo, i) {
3110 		q = &rxo->cq;
3111 		if (q->created)
3112 			be_cmd_q_destroy(adapter, q, QTYPE_CQ);
3113 		be_queue_free(adapter, q);
3114 	}
3115 }
3116 
3117 static int be_rx_cqs_create(struct be_adapter *adapter)
3118 {
3119 	struct be_queue_info *eq, *cq;
3120 	struct be_rx_obj *rxo;
3121 	int rc, i;
3122 
3123 	adapter->num_rss_qs =
3124 			min(adapter->num_evt_qs, adapter->cfg_num_rx_irqs);
3125 
3126 	/* We'll use RSS only if atleast 2 RSS rings are supported. */
3127 	if (adapter->num_rss_qs < 2)
3128 		adapter->num_rss_qs = 0;
3129 
3130 	adapter->num_rx_qs = adapter->num_rss_qs + adapter->need_def_rxq;
3131 
3132 	/* When the interface is not capable of RSS rings (and there is no
3133 	 * need to create a default RXQ) we'll still need one RXQ
3134 	 */
3135 	if (adapter->num_rx_qs == 0)
3136 		adapter->num_rx_qs = 1;
3137 
3138 	adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
3139 	for_all_rx_queues(adapter, rxo, i) {
3140 		rxo->adapter = adapter;
3141 		cq = &rxo->cq;
3142 		rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
3143 				    sizeof(struct be_eth_rx_compl));
3144 		if (rc)
3145 			return rc;
3146 
3147 		u64_stats_init(&rxo->stats.sync);
3148 		eq = &adapter->eq_obj[i % adapter->num_evt_qs].q;
3149 		rc = be_cmd_cq_create(adapter, cq, eq, false, 3);
3150 		if (rc)
3151 			return rc;
3152 	}
3153 
3154 	dev_info(&adapter->pdev->dev,
3155 		 "created %d RX queue(s)\n", adapter->num_rx_qs);
3156 	return 0;
3157 }
3158 
3159 static irqreturn_t be_intx(int irq, void *dev)
3160 {
3161 	struct be_eq_obj *eqo = dev;
3162 	struct be_adapter *adapter = eqo->adapter;
3163 	int num_evts = 0;
3164 
3165 	/* IRQ is not expected when NAPI is scheduled as the EQ
3166 	 * will not be armed.
3167 	 * But, this can happen on Lancer INTx where it takes
3168 	 * a while to de-assert INTx or in BE2 where occasionaly
3169 	 * an interrupt may be raised even when EQ is unarmed.
3170 	 * If NAPI is already scheduled, then counting & notifying
3171 	 * events will orphan them.
3172 	 */
3173 	if (napi_schedule_prep(&eqo->napi)) {
3174 		num_evts = events_get(eqo);
3175 		__napi_schedule(&eqo->napi);
3176 		if (num_evts)
3177 			eqo->spurious_intr = 0;
3178 	}
3179 	be_eq_notify(adapter, eqo->q.id, false, true, num_evts, 0);
3180 
3181 	/* Return IRQ_HANDLED only for the first spurious intr
3182 	 * after a valid intr to stop the kernel from branding
3183 	 * this irq as a bad one!
3184 	 */
3185 	if (num_evts || eqo->spurious_intr++ == 0)
3186 		return IRQ_HANDLED;
3187 	else
3188 		return IRQ_NONE;
3189 }
3190 
3191 static irqreturn_t be_msix(int irq, void *dev)
3192 {
3193 	struct be_eq_obj *eqo = dev;
3194 
3195 	be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
3196 	napi_schedule(&eqo->napi);
3197 	return IRQ_HANDLED;
3198 }
3199 
3200 static inline bool do_gro(struct be_rx_compl_info *rxcp)
3201 {
3202 	return (rxcp->tcpf && !rxcp->err && rxcp->l4_csum) ? true : false;
3203 }
3204 
3205 static int be_process_rx(struct be_rx_obj *rxo, struct napi_struct *napi,
3206 			 int budget)
3207 {
3208 	struct be_adapter *adapter = rxo->adapter;
3209 	struct be_queue_info *rx_cq = &rxo->cq;
3210 	struct be_rx_compl_info *rxcp;
3211 	u32 work_done;
3212 	u32 frags_consumed = 0;
3213 
3214 	for (work_done = 0; work_done < budget; work_done++) {
3215 		rxcp = be_rx_compl_get(rxo);
3216 		if (!rxcp)
3217 			break;
3218 
3219 		/* Is it a flush compl that has no data */
3220 		if (unlikely(rxcp->num_rcvd == 0))
3221 			goto loop_continue;
3222 
3223 		/* Discard compl with partial DMA Lancer B0 */
3224 		if (unlikely(!rxcp->pkt_size)) {
3225 			be_rx_compl_discard(rxo, rxcp);
3226 			goto loop_continue;
3227 		}
3228 
3229 		/* On BE drop pkts that arrive due to imperfect filtering in
3230 		 * promiscuous mode on some skews
3231 		 */
3232 		if (unlikely(rxcp->port != adapter->port_num &&
3233 			     !lancer_chip(adapter))) {
3234 			be_rx_compl_discard(rxo, rxcp);
3235 			goto loop_continue;
3236 		}
3237 
3238 		if (do_gro(rxcp))
3239 			be_rx_compl_process_gro(rxo, napi, rxcp);
3240 		else
3241 			be_rx_compl_process(rxo, napi, rxcp);
3242 
3243 loop_continue:
3244 		frags_consumed += rxcp->num_rcvd;
3245 		be_rx_stats_update(rxo, rxcp);
3246 	}
3247 
3248 	if (work_done) {
3249 		be_cq_notify(adapter, rx_cq->id, true, work_done);
3250 
3251 		/* When an rx-obj gets into post_starved state, just
3252 		 * let be_worker do the posting.
3253 		 */
3254 		if (atomic_read(&rxo->q.used) < RX_FRAGS_REFILL_WM &&
3255 		    !rxo->rx_post_starved)
3256 			be_post_rx_frags(rxo, GFP_ATOMIC,
3257 					 max_t(u32, MAX_RX_POST,
3258 					       frags_consumed));
3259 	}
3260 
3261 	return work_done;
3262 }
3263 
3264 
3265 static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo,
3266 			  int idx)
3267 {
3268 	int num_wrbs = 0, work_done = 0;
3269 	struct be_tx_compl_info *txcp;
3270 
3271 	while ((txcp = be_tx_compl_get(adapter, txo))) {
3272 		num_wrbs += be_tx_compl_process(adapter, txo, txcp->end_index);
3273 		work_done++;
3274 	}
3275 
3276 	if (work_done) {
3277 		be_cq_notify(adapter, txo->cq.id, true, work_done);
3278 		atomic_sub(num_wrbs, &txo->q.used);
3279 
3280 		/* As Tx wrbs have been freed up, wake up netdev queue
3281 		 * if it was stopped due to lack of tx wrbs.  */
3282 		if (__netif_subqueue_stopped(adapter->netdev, idx) &&
3283 		    be_can_txq_wake(txo)) {
3284 			netif_wake_subqueue(adapter->netdev, idx);
3285 		}
3286 
3287 		u64_stats_update_begin(&tx_stats(txo)->sync_compl);
3288 		tx_stats(txo)->tx_compl += work_done;
3289 		u64_stats_update_end(&tx_stats(txo)->sync_compl);
3290 	}
3291 }
3292 
3293 int be_poll(struct napi_struct *napi, int budget)
3294 {
3295 	struct be_eq_obj *eqo = container_of(napi, struct be_eq_obj, napi);
3296 	struct be_adapter *adapter = eqo->adapter;
3297 	int max_work = 0, work, i, num_evts;
3298 	struct be_rx_obj *rxo;
3299 	struct be_tx_obj *txo;
3300 	u32 mult_enc = 0;
3301 
3302 	num_evts = events_get(eqo);
3303 
3304 	for_all_tx_queues_on_eq(adapter, eqo, txo, i)
3305 		be_process_tx(adapter, txo, i);
3306 
3307 	/* This loop will iterate twice for EQ0 in which
3308 	 * completions of the last RXQ (default one) are also processed
3309 	 * For other EQs the loop iterates only once
3310 	 */
3311 	for_all_rx_queues_on_eq(adapter, eqo, rxo, i) {
3312 		work = be_process_rx(rxo, napi, budget);
3313 		max_work = max(work, max_work);
3314 	}
3315 
3316 	if (is_mcc_eqo(eqo))
3317 		be_process_mcc(adapter);
3318 
3319 	if (max_work < budget) {
3320 		napi_complete_done(napi, max_work);
3321 
3322 		/* Skyhawk EQ_DB has a provision to set the rearm to interrupt
3323 		 * delay via a delay multiplier encoding value
3324 		 */
3325 		if (skyhawk_chip(adapter))
3326 			mult_enc = be_get_eq_delay_mult_enc(eqo);
3327 
3328 		be_eq_notify(adapter, eqo->q.id, true, false, num_evts,
3329 			     mult_enc);
3330 	} else {
3331 		/* As we'll continue in polling mode, count and clear events */
3332 		be_eq_notify(adapter, eqo->q.id, false, false, num_evts, 0);
3333 	}
3334 	return max_work;
3335 }
3336 
3337 void be_detect_error(struct be_adapter *adapter)
3338 {
3339 	u32 ue_lo = 0, ue_hi = 0, ue_lo_mask = 0, ue_hi_mask = 0;
3340 	u32 sliport_status = 0, sliport_err1 = 0, sliport_err2 = 0;
3341 	struct device *dev = &adapter->pdev->dev;
3342 	u16 val;
3343 	u32 i;
3344 
3345 	if (be_check_error(adapter, BE_ERROR_HW))
3346 		return;
3347 
3348 	if (lancer_chip(adapter)) {
3349 		sliport_status = ioread32(adapter->db + SLIPORT_STATUS_OFFSET);
3350 		if (sliport_status & SLIPORT_STATUS_ERR_MASK) {
3351 			be_set_error(adapter, BE_ERROR_UE);
3352 			sliport_err1 = ioread32(adapter->db +
3353 						SLIPORT_ERROR1_OFFSET);
3354 			sliport_err2 = ioread32(adapter->db +
3355 						SLIPORT_ERROR2_OFFSET);
3356 			/* Do not log error messages if its a FW reset */
3357 			if (sliport_err1 == SLIPORT_ERROR_FW_RESET1 &&
3358 			    sliport_err2 == SLIPORT_ERROR_FW_RESET2) {
3359 				dev_info(dev, "Reset is in progress\n");
3360 			} else {
3361 				dev_err(dev, "Error detected in the card\n");
3362 				dev_err(dev, "ERR: sliport status 0x%x\n",
3363 					sliport_status);
3364 				dev_err(dev, "ERR: sliport error1 0x%x\n",
3365 					sliport_err1);
3366 				dev_err(dev, "ERR: sliport error2 0x%x\n",
3367 					sliport_err2);
3368 			}
3369 		}
3370 	} else {
3371 		ue_lo = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_LOW);
3372 		ue_hi = ioread32(adapter->pcicfg + PCICFG_UE_STATUS_HIGH);
3373 		ue_lo_mask = ioread32(adapter->pcicfg +
3374 				      PCICFG_UE_STATUS_LOW_MASK);
3375 		ue_hi_mask = ioread32(adapter->pcicfg +
3376 				      PCICFG_UE_STATUS_HI_MASK);
3377 
3378 		ue_lo = (ue_lo & ~ue_lo_mask);
3379 		ue_hi = (ue_hi & ~ue_hi_mask);
3380 
3381 		if (ue_lo || ue_hi) {
3382 			/* On certain platforms BE3 hardware can indicate
3383 			 * spurious UEs. In case of a UE in the chip,
3384 			 * the POST register correctly reports either a
3385 			 * FAT_LOG_START state (FW is currently dumping
3386 			 * FAT log data) or a ARMFW_UE state. Check for the
3387 			 * above states to ascertain if the UE is valid or not.
3388 			 */
3389 			if (BE3_chip(adapter)) {
3390 				val = be_POST_stage_get(adapter);
3391 				if ((val & POST_STAGE_FAT_LOG_START)
3392 				     != POST_STAGE_FAT_LOG_START &&
3393 				    (val & POST_STAGE_ARMFW_UE)
3394 				     != POST_STAGE_ARMFW_UE &&
3395 				    (val & POST_STAGE_RECOVERABLE_ERR)
3396 				     != POST_STAGE_RECOVERABLE_ERR)
3397 					return;
3398 			}
3399 
3400 			dev_err(dev, "Error detected in the adapter");
3401 			be_set_error(adapter, BE_ERROR_UE);
3402 
3403 			for (i = 0; ue_lo; ue_lo >>= 1, i++) {
3404 				if (ue_lo & 1)
3405 					dev_err(dev, "UE: %s bit set\n",
3406 						ue_status_low_desc[i]);
3407 			}
3408 			for (i = 0; ue_hi; ue_hi >>= 1, i++) {
3409 				if (ue_hi & 1)
3410 					dev_err(dev, "UE: %s bit set\n",
3411 						ue_status_hi_desc[i]);
3412 			}
3413 		}
3414 	}
3415 }
3416 
3417 static void be_msix_disable(struct be_adapter *adapter)
3418 {
3419 	if (msix_enabled(adapter)) {
3420 		pci_disable_msix(adapter->pdev);
3421 		adapter->num_msix_vec = 0;
3422 		adapter->num_msix_roce_vec = 0;
3423 	}
3424 }
3425 
3426 static int be_msix_enable(struct be_adapter *adapter)
3427 {
3428 	unsigned int i, max_roce_eqs;
3429 	struct device *dev = &adapter->pdev->dev;
3430 	int num_vec;
3431 
3432 	/* If RoCE is supported, program the max number of vectors that
3433 	 * could be used for NIC and RoCE, else, just program the number
3434 	 * we'll use initially.
3435 	 */
3436 	if (be_roce_supported(adapter)) {
3437 		max_roce_eqs =
3438 			be_max_func_eqs(adapter) - be_max_nic_eqs(adapter);
3439 		max_roce_eqs = min(max_roce_eqs, num_online_cpus());
3440 		num_vec = be_max_any_irqs(adapter) + max_roce_eqs;
3441 	} else {
3442 		num_vec = max(adapter->cfg_num_rx_irqs,
3443 			      adapter->cfg_num_tx_irqs);
3444 	}
3445 
3446 	for (i = 0; i < num_vec; i++)
3447 		adapter->msix_entries[i].entry = i;
3448 
3449 	num_vec = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
3450 					MIN_MSIX_VECTORS, num_vec);
3451 	if (num_vec < 0)
3452 		goto fail;
3453 
3454 	if (be_roce_supported(adapter) && num_vec > MIN_MSIX_VECTORS) {
3455 		adapter->num_msix_roce_vec = num_vec / 2;
3456 		dev_info(dev, "enabled %d MSI-x vector(s) for RoCE\n",
3457 			 adapter->num_msix_roce_vec);
3458 	}
3459 
3460 	adapter->num_msix_vec = num_vec - adapter->num_msix_roce_vec;
3461 
3462 	dev_info(dev, "enabled %d MSI-x vector(s) for NIC\n",
3463 		 adapter->num_msix_vec);
3464 	return 0;
3465 
3466 fail:
3467 	dev_warn(dev, "MSIx enable failed\n");
3468 
3469 	/* INTx is not supported in VFs, so fail probe if enable_msix fails */
3470 	if (be_virtfn(adapter))
3471 		return num_vec;
3472 	return 0;
3473 }
3474 
3475 static inline int be_msix_vec_get(struct be_adapter *adapter,
3476 				  struct be_eq_obj *eqo)
3477 {
3478 	return adapter->msix_entries[eqo->msix_idx].vector;
3479 }
3480 
3481 static int be_msix_register(struct be_adapter *adapter)
3482 {
3483 	struct net_device *netdev = adapter->netdev;
3484 	struct be_eq_obj *eqo;
3485 	int status, i, vec;
3486 
3487 	for_all_evt_queues(adapter, eqo, i) {
3488 		sprintf(eqo->desc, "%s-q%d", netdev->name, i);
3489 		vec = be_msix_vec_get(adapter, eqo);
3490 		status = request_irq(vec, be_msix, 0, eqo->desc, eqo);
3491 		if (status)
3492 			goto err_msix;
3493 
3494 		irq_update_affinity_hint(vec, eqo->affinity_mask);
3495 	}
3496 
3497 	return 0;
3498 err_msix:
3499 	for (i--; i >= 0; i--) {
3500 		eqo = &adapter->eq_obj[i];
3501 		free_irq(be_msix_vec_get(adapter, eqo), eqo);
3502 	}
3503 	dev_warn(&adapter->pdev->dev, "MSIX Request IRQ failed - err %d\n",
3504 		 status);
3505 	be_msix_disable(adapter);
3506 	return status;
3507 }
3508 
3509 static int be_irq_register(struct be_adapter *adapter)
3510 {
3511 	struct net_device *netdev = adapter->netdev;
3512 	int status;
3513 
3514 	if (msix_enabled(adapter)) {
3515 		status = be_msix_register(adapter);
3516 		if (status == 0)
3517 			goto done;
3518 		/* INTx is not supported for VF */
3519 		if (be_virtfn(adapter))
3520 			return status;
3521 	}
3522 
3523 	/* INTx: only the first EQ is used */
3524 	netdev->irq = adapter->pdev->irq;
3525 	status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
3526 			     &adapter->eq_obj[0]);
3527 	if (status) {
3528 		dev_err(&adapter->pdev->dev,
3529 			"INTx request IRQ failed - err %d\n", status);
3530 		return status;
3531 	}
3532 done:
3533 	adapter->isr_registered = true;
3534 	return 0;
3535 }
3536 
3537 static void be_irq_unregister(struct be_adapter *adapter)
3538 {
3539 	struct net_device *netdev = adapter->netdev;
3540 	struct be_eq_obj *eqo;
3541 	int i, vec;
3542 
3543 	if (!adapter->isr_registered)
3544 		return;
3545 
3546 	/* INTx */
3547 	if (!msix_enabled(adapter)) {
3548 		free_irq(netdev->irq, &adapter->eq_obj[0]);
3549 		goto done;
3550 	}
3551 
3552 	/* MSIx */
3553 	for_all_evt_queues(adapter, eqo, i) {
3554 		vec = be_msix_vec_get(adapter, eqo);
3555 		irq_update_affinity_hint(vec, NULL);
3556 		free_irq(vec, eqo);
3557 	}
3558 
3559 done:
3560 	adapter->isr_registered = false;
3561 }
3562 
3563 static void be_rx_qs_destroy(struct be_adapter *adapter)
3564 {
3565 	struct rss_info *rss = &adapter->rss_info;
3566 	struct be_queue_info *q;
3567 	struct be_rx_obj *rxo;
3568 	int i;
3569 
3570 	for_all_rx_queues(adapter, rxo, i) {
3571 		q = &rxo->q;
3572 		if (q->created) {
3573 			/* If RXQs are destroyed while in an "out of buffer"
3574 			 * state, there is a possibility of an HW stall on
3575 			 * Lancer. So, post 64 buffers to each queue to relieve
3576 			 * the "out of buffer" condition.
3577 			 * Make sure there's space in the RXQ before posting.
3578 			 */
3579 			if (lancer_chip(adapter)) {
3580 				be_rx_cq_clean(rxo);
3581 				if (atomic_read(&q->used) == 0)
3582 					be_post_rx_frags(rxo, GFP_KERNEL,
3583 							 MAX_RX_POST);
3584 			}
3585 
3586 			be_cmd_rxq_destroy(adapter, q);
3587 			be_rx_cq_clean(rxo);
3588 			be_rxq_clean(rxo);
3589 		}
3590 		be_queue_free(adapter, q);
3591 	}
3592 
3593 	if (rss->rss_flags) {
3594 		rss->rss_flags = RSS_ENABLE_NONE;
3595 		be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3596 				  128, rss->rss_hkey);
3597 	}
3598 }
3599 
3600 static void be_disable_if_filters(struct be_adapter *adapter)
3601 {
3602 	/* Don't delete MAC on BE3 VFs without FILTMGMT privilege  */
3603 	if (!BEx_chip(adapter) || !be_virtfn(adapter) ||
3604 	    check_privilege(adapter, BE_PRIV_FILTMGMT)) {
3605 		be_dev_mac_del(adapter, adapter->pmac_id[0]);
3606 		eth_zero_addr(adapter->dev_mac);
3607 	}
3608 
3609 	be_clear_uc_list(adapter);
3610 	be_clear_mc_list(adapter);
3611 
3612 	/* The IFACE flags are enabled in the open path and cleared
3613 	 * in the close path. When a VF gets detached from the host and
3614 	 * assigned to a VM the following happens:
3615 	 *	- VF's IFACE flags get cleared in the detach path
3616 	 *	- IFACE create is issued by the VF in the attach path
3617 	 * Due to a bug in the BE3/Skyhawk-R FW
3618 	 * (Lancer FW doesn't have the bug), the IFACE capability flags
3619 	 * specified along with the IFACE create cmd issued by a VF are not
3620 	 * honoured by FW.  As a consequence, if a *new* driver
3621 	 * (that enables/disables IFACE flags in open/close)
3622 	 * is loaded in the host and an *old* driver is * used by a VM/VF,
3623 	 * the IFACE gets created *without* the needed flags.
3624 	 * To avoid this, disable RX-filter flags only for Lancer.
3625 	 */
3626 	if (lancer_chip(adapter)) {
3627 		be_cmd_rx_filter(adapter, BE_IF_ALL_FILT_FLAGS, OFF);
3628 		adapter->if_flags &= ~BE_IF_ALL_FILT_FLAGS;
3629 	}
3630 }
3631 
3632 static int be_close(struct net_device *netdev)
3633 {
3634 	struct be_adapter *adapter = netdev_priv(netdev);
3635 	struct be_eq_obj *eqo;
3636 	int i;
3637 
3638 	/* This protection is needed as be_close() may be called even when the
3639 	 * adapter is in cleared state (after eeh perm failure)
3640 	 */
3641 	if (!(adapter->flags & BE_FLAGS_SETUP_DONE))
3642 		return 0;
3643 
3644 	/* Before attempting cleanup ensure all the pending cmds in the
3645 	 * config_wq have finished execution
3646 	 */
3647 	flush_workqueue(be_wq);
3648 
3649 	be_disable_if_filters(adapter);
3650 
3651 	if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
3652 		for_all_evt_queues(adapter, eqo, i) {
3653 			napi_disable(&eqo->napi);
3654 		}
3655 		adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
3656 	}
3657 
3658 	be_async_mcc_disable(adapter);
3659 
3660 	/* Wait for all pending tx completions to arrive so that
3661 	 * all tx skbs are freed.
3662 	 */
3663 	netif_tx_disable(netdev);
3664 	be_tx_compl_clean(adapter);
3665 
3666 	be_rx_qs_destroy(adapter);
3667 
3668 	for_all_evt_queues(adapter, eqo, i) {
3669 		if (msix_enabled(adapter))
3670 			synchronize_irq(be_msix_vec_get(adapter, eqo));
3671 		else
3672 			synchronize_irq(netdev->irq);
3673 		be_eq_clean(eqo);
3674 	}
3675 
3676 	be_irq_unregister(adapter);
3677 
3678 	return 0;
3679 }
3680 
3681 static int be_rx_qs_create(struct be_adapter *adapter)
3682 {
3683 	struct rss_info *rss = &adapter->rss_info;
3684 	u8 rss_key[RSS_HASH_KEY_LEN];
3685 	struct be_rx_obj *rxo;
3686 	int rc, i, j;
3687 
3688 	for_all_rx_queues(adapter, rxo, i) {
3689 		rc = be_queue_alloc(adapter, &rxo->q, RX_Q_LEN,
3690 				    sizeof(struct be_eth_rx_d));
3691 		if (rc)
3692 			return rc;
3693 	}
3694 
3695 	if (adapter->need_def_rxq || !adapter->num_rss_qs) {
3696 		rxo = default_rxo(adapter);
3697 		rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3698 				       rx_frag_size, adapter->if_handle,
3699 				       false, &rxo->rss_id);
3700 		if (rc)
3701 			return rc;
3702 	}
3703 
3704 	for_all_rss_queues(adapter, rxo, i) {
3705 		rc = be_cmd_rxq_create(adapter, &rxo->q, rxo->cq.id,
3706 				       rx_frag_size, adapter->if_handle,
3707 				       true, &rxo->rss_id);
3708 		if (rc)
3709 			return rc;
3710 	}
3711 
3712 	if (be_multi_rxq(adapter)) {
3713 		for (j = 0; j < RSS_INDIR_TABLE_LEN; j += adapter->num_rss_qs) {
3714 			for_all_rss_queues(adapter, rxo, i) {
3715 				if ((j + i) >= RSS_INDIR_TABLE_LEN)
3716 					break;
3717 				rss->rsstable[j + i] = rxo->rss_id;
3718 				rss->rss_queue[j + i] = i;
3719 			}
3720 		}
3721 		rss->rss_flags = RSS_ENABLE_TCP_IPV4 | RSS_ENABLE_IPV4 |
3722 			RSS_ENABLE_TCP_IPV6 | RSS_ENABLE_IPV6;
3723 
3724 		if (!BEx_chip(adapter))
3725 			rss->rss_flags |= RSS_ENABLE_UDP_IPV4 |
3726 				RSS_ENABLE_UDP_IPV6;
3727 
3728 		netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN);
3729 		rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags,
3730 				       RSS_INDIR_TABLE_LEN, rss_key);
3731 		if (rc) {
3732 			rss->rss_flags = RSS_ENABLE_NONE;
3733 			return rc;
3734 		}
3735 
3736 		memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN);
3737 	} else {
3738 		/* Disable RSS, if only default RX Q is created */
3739 		rss->rss_flags = RSS_ENABLE_NONE;
3740 	}
3741 
3742 
3743 	/* Post 1 less than RXQ-len to avoid head being equal to tail,
3744 	 * which is a queue empty condition
3745 	 */
3746 	for_all_rx_queues(adapter, rxo, i)
3747 		be_post_rx_frags(rxo, GFP_KERNEL, RX_Q_LEN - 1);
3748 
3749 	return 0;
3750 }
3751 
3752 static int be_enable_if_filters(struct be_adapter *adapter)
3753 {
3754 	int status;
3755 
3756 	status = be_cmd_rx_filter(adapter, BE_IF_FILT_FLAGS_BASIC, ON);
3757 	if (status)
3758 		return status;
3759 
3760 	/* Normally this condition usually true as the ->dev_mac is zeroed.
3761 	 * But on BE3 VFs the initial MAC is pre-programmed by PF and
3762 	 * subsequent be_dev_mac_add() can fail (after fresh boot)
3763 	 */
3764 	if (!ether_addr_equal(adapter->dev_mac, adapter->netdev->dev_addr)) {
3765 		int old_pmac_id = -1;
3766 
3767 		/* Remember old programmed MAC if any - can happen on BE3 VF */
3768 		if (!is_zero_ether_addr(adapter->dev_mac))
3769 			old_pmac_id = adapter->pmac_id[0];
3770 
3771 		status = be_dev_mac_add(adapter, adapter->netdev->dev_addr);
3772 		if (status)
3773 			return status;
3774 
3775 		/* Delete the old programmed MAC as we successfully programmed
3776 		 * a new MAC
3777 		 */
3778 		if (old_pmac_id >= 0 && old_pmac_id != adapter->pmac_id[0])
3779 			be_dev_mac_del(adapter, old_pmac_id);
3780 
3781 		ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr);
3782 	}
3783 
3784 	if (adapter->vlans_added)
3785 		be_vid_config(adapter);
3786 
3787 	__be_set_rx_mode(adapter);
3788 
3789 	return 0;
3790 }
3791 
3792 static int be_open(struct net_device *netdev)
3793 {
3794 	struct be_adapter *adapter = netdev_priv(netdev);
3795 	struct be_eq_obj *eqo;
3796 	struct be_rx_obj *rxo;
3797 	struct be_tx_obj *txo;
3798 	u8 link_status;
3799 	int status, i;
3800 
3801 	status = be_rx_qs_create(adapter);
3802 	if (status)
3803 		goto err;
3804 
3805 	status = be_enable_if_filters(adapter);
3806 	if (status)
3807 		goto err;
3808 
3809 	status = be_irq_register(adapter);
3810 	if (status)
3811 		goto err;
3812 
3813 	for_all_rx_queues(adapter, rxo, i)
3814 		be_cq_notify(adapter, rxo->cq.id, true, 0);
3815 
3816 	for_all_tx_queues(adapter, txo, i)
3817 		be_cq_notify(adapter, txo->cq.id, true, 0);
3818 
3819 	be_async_mcc_enable(adapter);
3820 
3821 	for_all_evt_queues(adapter, eqo, i) {
3822 		napi_enable(&eqo->napi);
3823 		be_eq_notify(adapter, eqo->q.id, true, true, 0, 0);
3824 	}
3825 	adapter->flags |= BE_FLAGS_NAPI_ENABLED;
3826 
3827 	status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
3828 	if (!status)
3829 		be_link_status_update(adapter, link_status);
3830 
3831 	netif_tx_start_all_queues(netdev);
3832 
3833 	udp_tunnel_nic_reset_ntf(netdev);
3834 
3835 	return 0;
3836 err:
3837 	be_close(adapter->netdev);
3838 	return -EIO;
3839 }
3840 
3841 static void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
3842 {
3843 	u32 addr;
3844 
3845 	addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
3846 
3847 	mac[5] = (u8)(addr & 0xFF);
3848 	mac[4] = (u8)((addr >> 8) & 0xFF);
3849 	mac[3] = (u8)((addr >> 16) & 0xFF);
3850 	/* Use the OUI from the current MAC address */
3851 	memcpy(mac, adapter->netdev->dev_addr, 3);
3852 }
3853 
3854 /*
3855  * Generate a seed MAC address from the PF MAC Address using jhash.
3856  * MAC Address for VFs are assigned incrementally starting from the seed.
3857  * These addresses are programmed in the ASIC by the PF and the VF driver
3858  * queries for the MAC address during its probe.
3859  */
3860 static int be_vf_eth_addr_config(struct be_adapter *adapter)
3861 {
3862 	u32 vf;
3863 	int status = 0;
3864 	u8 mac[ETH_ALEN];
3865 	struct be_vf_cfg *vf_cfg;
3866 
3867 	be_vf_eth_addr_generate(adapter, mac);
3868 
3869 	for_all_vfs(adapter, vf_cfg, vf) {
3870 		if (BEx_chip(adapter))
3871 			status = be_cmd_pmac_add(adapter, mac,
3872 						 vf_cfg->if_handle,
3873 						 &vf_cfg->pmac_id, vf + 1);
3874 		else
3875 			status = be_cmd_set_mac(adapter, mac, vf_cfg->if_handle,
3876 						vf + 1);
3877 
3878 		if (status)
3879 			dev_err(&adapter->pdev->dev,
3880 				"Mac address assignment failed for VF %d\n",
3881 				vf);
3882 		else
3883 			memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3884 
3885 		mac[5] += 1;
3886 	}
3887 	return status;
3888 }
3889 
3890 static int be_vfs_mac_query(struct be_adapter *adapter)
3891 {
3892 	int status, vf;
3893 	u8 mac[ETH_ALEN];
3894 	struct be_vf_cfg *vf_cfg;
3895 
3896 	for_all_vfs(adapter, vf_cfg, vf) {
3897 		status = be_cmd_get_active_mac(adapter, vf_cfg->pmac_id,
3898 					       mac, vf_cfg->if_handle,
3899 					       false, vf+1);
3900 		if (status)
3901 			return status;
3902 		memcpy(vf_cfg->mac_addr, mac, ETH_ALEN);
3903 	}
3904 	return 0;
3905 }
3906 
3907 static void be_vf_clear(struct be_adapter *adapter)
3908 {
3909 	struct be_vf_cfg *vf_cfg;
3910 	u32 vf;
3911 
3912 	if (pci_vfs_assigned(adapter->pdev)) {
3913 		dev_warn(&adapter->pdev->dev,
3914 			 "VFs are assigned to VMs: not disabling VFs\n");
3915 		goto done;
3916 	}
3917 
3918 	pci_disable_sriov(adapter->pdev);
3919 
3920 	for_all_vfs(adapter, vf_cfg, vf) {
3921 		if (BEx_chip(adapter))
3922 			be_cmd_pmac_del(adapter, vf_cfg->if_handle,
3923 					vf_cfg->pmac_id, vf + 1);
3924 		else
3925 			be_cmd_set_mac(adapter, NULL, vf_cfg->if_handle,
3926 				       vf + 1);
3927 
3928 		be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1);
3929 	}
3930 
3931 	if (BE3_chip(adapter))
3932 		be_cmd_set_hsw_config(adapter, 0, 0,
3933 				      adapter->if_handle,
3934 				      PORT_FWD_TYPE_PASSTHRU, 0);
3935 done:
3936 	kfree(adapter->vf_cfg);
3937 	adapter->num_vfs = 0;
3938 	adapter->flags &= ~BE_FLAGS_SRIOV_ENABLED;
3939 }
3940 
3941 static void be_clear_queues(struct be_adapter *adapter)
3942 {
3943 	be_mcc_queues_destroy(adapter);
3944 	be_rx_cqs_destroy(adapter);
3945 	be_tx_queues_destroy(adapter);
3946 	be_evt_queues_destroy(adapter);
3947 }
3948 
3949 static void be_cancel_worker(struct be_adapter *adapter)
3950 {
3951 	if (adapter->flags & BE_FLAGS_WORKER_SCHEDULED) {
3952 		cancel_delayed_work_sync(&adapter->work);
3953 		adapter->flags &= ~BE_FLAGS_WORKER_SCHEDULED;
3954 	}
3955 }
3956 
3957 static void be_cancel_err_detection(struct be_adapter *adapter)
3958 {
3959 	struct be_error_recovery *err_rec = &adapter->error_recovery;
3960 
3961 	if (!be_err_recovery_workq)
3962 		return;
3963 
3964 	if (adapter->flags & BE_FLAGS_ERR_DETECTION_SCHEDULED) {
3965 		cancel_delayed_work_sync(&err_rec->err_detection_work);
3966 		adapter->flags &= ~BE_FLAGS_ERR_DETECTION_SCHEDULED;
3967 	}
3968 }
3969 
3970 /* VxLAN offload Notes:
3971  *
3972  * The stack defines tunnel offload flags (hw_enc_features) for IP and doesn't
3973  * distinguish various types of transports (VxLAN, GRE, NVGRE ..). So, offload
3974  * is expected to work across all types of IP tunnels once exported. Skyhawk
3975  * supports offloads for either VxLAN or NVGRE, exclusively. So we export VxLAN
3976  * offloads in hw_enc_features only when a VxLAN port is added. If other (non
3977  * VxLAN) tunnels are configured while VxLAN offloads are enabled, offloads for
3978  * those other tunnels are unexported on the fly through ndo_features_check().
3979  */
3980 static int be_vxlan_set_port(struct net_device *netdev, unsigned int table,
3981 			     unsigned int entry, struct udp_tunnel_info *ti)
3982 {
3983 	struct be_adapter *adapter = netdev_priv(netdev);
3984 	struct device *dev = &adapter->pdev->dev;
3985 	int status;
3986 
3987 	status = be_cmd_manage_iface(adapter, adapter->if_handle,
3988 				     OP_CONVERT_NORMAL_TO_TUNNEL);
3989 	if (status) {
3990 		dev_warn(dev, "Failed to convert normal interface to tunnel\n");
3991 		return status;
3992 	}
3993 	adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS;
3994 
3995 	status = be_cmd_set_vxlan_port(adapter, ti->port);
3996 	if (status) {
3997 		dev_warn(dev, "Failed to add VxLAN port\n");
3998 		return status;
3999 	}
4000 	adapter->vxlan_port = ti->port;
4001 
4002 	netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
4003 				   NETIF_F_TSO | NETIF_F_TSO6 |
4004 				   NETIF_F_GSO_UDP_TUNNEL;
4005 
4006 	dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n",
4007 		 be16_to_cpu(ti->port));
4008 	return 0;
4009 }
4010 
4011 static int be_vxlan_unset_port(struct net_device *netdev, unsigned int table,
4012 			       unsigned int entry, struct udp_tunnel_info *ti)
4013 {
4014 	struct be_adapter *adapter = netdev_priv(netdev);
4015 
4016 	if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)
4017 		be_cmd_manage_iface(adapter, adapter->if_handle,
4018 				    OP_CONVERT_TUNNEL_TO_NORMAL);
4019 
4020 	if (adapter->vxlan_port)
4021 		be_cmd_set_vxlan_port(adapter, 0);
4022 
4023 	adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS;
4024 	adapter->vxlan_port = 0;
4025 
4026 	netdev->hw_enc_features = 0;
4027 	return 0;
4028 }
4029 
4030 static const struct udp_tunnel_nic_info be_udp_tunnels = {
4031 	.set_port	= be_vxlan_set_port,
4032 	.unset_port	= be_vxlan_unset_port,
4033 	.flags		= UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
4034 			  UDP_TUNNEL_NIC_INFO_OPEN_ONLY,
4035 	.tables		= {
4036 		{ .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
4037 	},
4038 };
4039 
4040 static void be_calculate_vf_res(struct be_adapter *adapter, u16 num_vfs,
4041 				struct be_resources *vft_res)
4042 {
4043 	struct be_resources res = adapter->pool_res;
4044 	u32 vf_if_cap_flags = res.vf_if_cap_flags;
4045 	struct be_resources res_mod = {0};
4046 	u16 num_vf_qs = 1;
4047 
4048 	/* Distribute the queue resources among the PF and it's VFs */
4049 	if (num_vfs) {
4050 		/* Divide the rx queues evenly among the VFs and the PF, capped
4051 		 * at VF-EQ-count. Any remainder queues belong to the PF.
4052 		 */
4053 		num_vf_qs = min(SH_VF_MAX_NIC_EQS,
4054 				res.max_rss_qs / (num_vfs + 1));
4055 
4056 		/* Skyhawk-R chip supports only MAX_PORT_RSS_TABLES
4057 		 * RSS Tables per port. Provide RSS on VFs, only if number of
4058 		 * VFs requested is less than it's PF Pool's RSS Tables limit.
4059 		 */
4060 		if (num_vfs >= be_max_pf_pool_rss_tables(adapter))
4061 			num_vf_qs = 1;
4062 	}
4063 
4064 	/* Resource with fields set to all '1's by GET_PROFILE_CONFIG cmd,
4065 	 * which are modifiable using SET_PROFILE_CONFIG cmd.
4066 	 */
4067 	be_cmd_get_profile_config(adapter, &res_mod, NULL, ACTIVE_PROFILE_TYPE,
4068 				  RESOURCE_MODIFIABLE, 0);
4069 
4070 	/* If RSS IFACE capability flags are modifiable for a VF, set the
4071 	 * capability flag as valid and set RSS and DEFQ_RSS IFACE flags if
4072 	 * more than 1 RSSQ is available for a VF.
4073 	 * Otherwise, provision only 1 queue pair for VF.
4074 	 */
4075 	if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_RSS) {
4076 		vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4077 		if (num_vf_qs > 1) {
4078 			vf_if_cap_flags |= BE_IF_FLAGS_RSS;
4079 			if (res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS)
4080 				vf_if_cap_flags |= BE_IF_FLAGS_DEFQ_RSS;
4081 		} else {
4082 			vf_if_cap_flags &= ~(BE_IF_FLAGS_RSS |
4083 					     BE_IF_FLAGS_DEFQ_RSS);
4084 		}
4085 	} else {
4086 		num_vf_qs = 1;
4087 	}
4088 
4089 	if (res_mod.vf_if_cap_flags & BE_IF_FLAGS_VLAN_PROMISCUOUS) {
4090 		vft_res->flags |= BIT(IF_CAPS_FLAGS_VALID_SHIFT);
4091 		vf_if_cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4092 	}
4093 
4094 	vft_res->vf_if_cap_flags = vf_if_cap_flags;
4095 	vft_res->max_rx_qs = num_vf_qs;
4096 	vft_res->max_rss_qs = num_vf_qs;
4097 	vft_res->max_tx_qs = res.max_tx_qs / (num_vfs + 1);
4098 	vft_res->max_cq_count = res.max_cq_count / (num_vfs + 1);
4099 
4100 	/* Distribute unicast MACs, VLANs, IFACE count and MCCQ count equally
4101 	 * among the PF and it's VFs, if the fields are changeable
4102 	 */
4103 	if (res_mod.max_uc_mac == FIELD_MODIFIABLE)
4104 		vft_res->max_uc_mac = res.max_uc_mac / (num_vfs + 1);
4105 
4106 	if (res_mod.max_vlans == FIELD_MODIFIABLE)
4107 		vft_res->max_vlans = res.max_vlans / (num_vfs + 1);
4108 
4109 	if (res_mod.max_iface_count == FIELD_MODIFIABLE)
4110 		vft_res->max_iface_count = res.max_iface_count / (num_vfs + 1);
4111 
4112 	if (res_mod.max_mcc_count == FIELD_MODIFIABLE)
4113 		vft_res->max_mcc_count = res.max_mcc_count / (num_vfs + 1);
4114 }
4115 
4116 static void be_if_destroy(struct be_adapter *adapter)
4117 {
4118 	be_cmd_if_destroy(adapter, adapter->if_handle,  0);
4119 
4120 	kfree(adapter->pmac_id);
4121 	adapter->pmac_id = NULL;
4122 
4123 	kfree(adapter->mc_list);
4124 	adapter->mc_list = NULL;
4125 
4126 	kfree(adapter->uc_list);
4127 	adapter->uc_list = NULL;
4128 }
4129 
4130 static int be_clear(struct be_adapter *adapter)
4131 {
4132 	struct pci_dev *pdev = adapter->pdev;
4133 	struct  be_resources vft_res = {0};
4134 
4135 	be_cancel_worker(adapter);
4136 
4137 	flush_workqueue(be_wq);
4138 
4139 	if (sriov_enabled(adapter))
4140 		be_vf_clear(adapter);
4141 
4142 	/* Re-configure FW to distribute resources evenly across max-supported
4143 	 * number of VFs, only when VFs are not already enabled.
4144 	 */
4145 	if (skyhawk_chip(adapter) && be_physfn(adapter) &&
4146 	    !pci_vfs_assigned(pdev)) {
4147 		be_calculate_vf_res(adapter,
4148 				    pci_sriov_get_totalvfs(pdev),
4149 				    &vft_res);
4150 		be_cmd_set_sriov_config(adapter, adapter->pool_res,
4151 					pci_sriov_get_totalvfs(pdev),
4152 					&vft_res);
4153 	}
4154 
4155 	be_vxlan_unset_port(adapter->netdev, 0, 0, NULL);
4156 
4157 	be_if_destroy(adapter);
4158 
4159 	be_clear_queues(adapter);
4160 
4161 	be_msix_disable(adapter);
4162 	adapter->flags &= ~BE_FLAGS_SETUP_DONE;
4163 	return 0;
4164 }
4165 
4166 static int be_vfs_if_create(struct be_adapter *adapter)
4167 {
4168 	struct be_resources res = {0};
4169 	u32 cap_flags, en_flags, vf;
4170 	struct be_vf_cfg *vf_cfg;
4171 	int status;
4172 
4173 	/* If a FW profile exists, then cap_flags are updated */
4174 	cap_flags = BE_VF_IF_EN_FLAGS;
4175 
4176 	for_all_vfs(adapter, vf_cfg, vf) {
4177 		if (!BE3_chip(adapter)) {
4178 			status = be_cmd_get_profile_config(adapter, &res, NULL,
4179 							   ACTIVE_PROFILE_TYPE,
4180 							   RESOURCE_LIMITS,
4181 							   vf + 1);
4182 			if (!status) {
4183 				cap_flags = res.if_cap_flags;
4184 				/* Prevent VFs from enabling VLAN promiscuous
4185 				 * mode
4186 				 */
4187 				cap_flags &= ~BE_IF_FLAGS_VLAN_PROMISCUOUS;
4188 			}
4189 		}
4190 
4191 		/* PF should enable IF flags during proxy if_create call */
4192 		en_flags = cap_flags & BE_VF_IF_EN_FLAGS;
4193 		status = be_cmd_if_create(adapter, cap_flags, en_flags,
4194 					  &vf_cfg->if_handle, vf + 1);
4195 		if (status)
4196 			return status;
4197 	}
4198 
4199 	return 0;
4200 }
4201 
4202 static int be_vf_setup_init(struct be_adapter *adapter)
4203 {
4204 	struct be_vf_cfg *vf_cfg;
4205 	int vf;
4206 
4207 	adapter->vf_cfg = kcalloc(adapter->num_vfs, sizeof(*vf_cfg),
4208 				  GFP_KERNEL);
4209 	if (!adapter->vf_cfg)
4210 		return -ENOMEM;
4211 
4212 	for_all_vfs(adapter, vf_cfg, vf) {
4213 		vf_cfg->if_handle = -1;
4214 		vf_cfg->pmac_id = -1;
4215 	}
4216 	return 0;
4217 }
4218 
4219 static int be_vf_setup(struct be_adapter *adapter)
4220 {
4221 	struct device *dev = &adapter->pdev->dev;
4222 	struct be_vf_cfg *vf_cfg;
4223 	int status, old_vfs, vf;
4224 	bool spoofchk;
4225 
4226 	old_vfs = pci_num_vf(adapter->pdev);
4227 
4228 	status = be_vf_setup_init(adapter);
4229 	if (status)
4230 		goto err;
4231 
4232 	if (old_vfs) {
4233 		for_all_vfs(adapter, vf_cfg, vf) {
4234 			status = be_cmd_get_if_id(adapter, vf_cfg, vf);
4235 			if (status)
4236 				goto err;
4237 		}
4238 
4239 		status = be_vfs_mac_query(adapter);
4240 		if (status)
4241 			goto err;
4242 	} else {
4243 		status = be_vfs_if_create(adapter);
4244 		if (status)
4245 			goto err;
4246 
4247 		status = be_vf_eth_addr_config(adapter);
4248 		if (status)
4249 			goto err;
4250 	}
4251 
4252 	for_all_vfs(adapter, vf_cfg, vf) {
4253 		/* Allow VFs to programs MAC/VLAN filters */
4254 		status = be_cmd_get_fn_privileges(adapter, &vf_cfg->privileges,
4255 						  vf + 1);
4256 		if (!status && !(vf_cfg->privileges & BE_PRIV_FILTMGMT)) {
4257 			status = be_cmd_set_fn_privileges(adapter,
4258 							  vf_cfg->privileges |
4259 							  BE_PRIV_FILTMGMT,
4260 							  vf + 1);
4261 			if (!status) {
4262 				vf_cfg->privileges |= BE_PRIV_FILTMGMT;
4263 				dev_info(dev, "VF%d has FILTMGMT privilege\n",
4264 					 vf);
4265 			}
4266 		}
4267 
4268 		/* Allow full available bandwidth */
4269 		if (!old_vfs)
4270 			be_cmd_config_qos(adapter, 0, 0, vf + 1);
4271 
4272 		status = be_cmd_get_hsw_config(adapter, NULL, vf + 1,
4273 					       vf_cfg->if_handle, NULL,
4274 					       &spoofchk);
4275 		if (!status)
4276 			vf_cfg->spoofchk = spoofchk;
4277 
4278 		if (!old_vfs) {
4279 			be_cmd_enable_vf(adapter, vf + 1);
4280 			be_cmd_set_logical_link_config(adapter,
4281 						       IFLA_VF_LINK_STATE_AUTO,
4282 						       vf+1);
4283 		}
4284 	}
4285 
4286 	if (!old_vfs) {
4287 		status = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
4288 		if (status) {
4289 			dev_err(dev, "SRIOV enable failed\n");
4290 			adapter->num_vfs = 0;
4291 			goto err;
4292 		}
4293 	}
4294 
4295 	if (BE3_chip(adapter)) {
4296 		/* On BE3, enable VEB only when SRIOV is enabled */
4297 		status = be_cmd_set_hsw_config(adapter, 0, 0,
4298 					       adapter->if_handle,
4299 					       PORT_FWD_TYPE_VEB, 0);
4300 		if (status)
4301 			goto err;
4302 	}
4303 
4304 	adapter->flags |= BE_FLAGS_SRIOV_ENABLED;
4305 	return 0;
4306 err:
4307 	dev_err(dev, "VF setup failed\n");
4308 	be_vf_clear(adapter);
4309 	return status;
4310 }
4311 
4312 /* Converting function_mode bits on BE3 to SH mc_type enums */
4313 
4314 static u8 be_convert_mc_type(u32 function_mode)
4315 {
4316 	if (function_mode & VNIC_MODE && function_mode & QNQ_MODE)
4317 		return vNIC1;
4318 	else if (function_mode & QNQ_MODE)
4319 		return FLEX10;
4320 	else if (function_mode & VNIC_MODE)
4321 		return vNIC2;
4322 	else if (function_mode & UMC_ENABLED)
4323 		return UMC;
4324 	else
4325 		return MC_NONE;
4326 }
4327 
4328 /* On BE2/BE3 FW does not suggest the supported limits */
4329 static void BEx_get_resources(struct be_adapter *adapter,
4330 			      struct be_resources *res)
4331 {
4332 	bool use_sriov = adapter->num_vfs ? 1 : 0;
4333 
4334 	if (be_physfn(adapter))
4335 		res->max_uc_mac = BE_UC_PMAC_COUNT;
4336 	else
4337 		res->max_uc_mac = BE_VF_UC_PMAC_COUNT;
4338 
4339 	adapter->mc_type = be_convert_mc_type(adapter->function_mode);
4340 
4341 	if (be_is_mc(adapter)) {
4342 		/* Assuming that there are 4 channels per port,
4343 		 * when multi-channel is enabled
4344 		 */
4345 		if (be_is_qnq_mode(adapter))
4346 			res->max_vlans = BE_NUM_VLANS_SUPPORTED/8;
4347 		else
4348 			/* In a non-qnq multichannel mode, the pvid
4349 			 * takes up one vlan entry
4350 			 */
4351 			res->max_vlans = (BE_NUM_VLANS_SUPPORTED / 4) - 1;
4352 	} else {
4353 		res->max_vlans = BE_NUM_VLANS_SUPPORTED;
4354 	}
4355 
4356 	res->max_mcast_mac = BE_MAX_MC;
4357 
4358 	/* 1) For BE3 1Gb ports, FW does not support multiple TXQs
4359 	 * 2) Create multiple TX rings on a BE3-R multi-channel interface
4360 	 *    *only* if it is RSS-capable.
4361 	 */
4362 	if (BE2_chip(adapter) || use_sriov ||  (adapter->port_num > 1) ||
4363 	    be_virtfn(adapter) ||
4364 	    (be_is_mc(adapter) &&
4365 	     !(adapter->function_caps & BE_FUNCTION_CAPS_RSS))) {
4366 		res->max_tx_qs = 1;
4367 	} else if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) {
4368 		struct be_resources super_nic_res = {0};
4369 
4370 		/* On a SuperNIC profile, the driver needs to use the
4371 		 * GET_PROFILE_CONFIG cmd to query the per-function TXQ limits
4372 		 */
4373 		be_cmd_get_profile_config(adapter, &super_nic_res, NULL,
4374 					  ACTIVE_PROFILE_TYPE, RESOURCE_LIMITS,
4375 					  0);
4376 		/* Some old versions of BE3 FW don't report max_tx_qs value */
4377 		res->max_tx_qs = super_nic_res.max_tx_qs ? : BE3_MAX_TX_QS;
4378 	} else {
4379 		res->max_tx_qs = BE3_MAX_TX_QS;
4380 	}
4381 
4382 	if ((adapter->function_caps & BE_FUNCTION_CAPS_RSS) &&
4383 	    !use_sriov && be_physfn(adapter))
4384 		res->max_rss_qs = (adapter->be3_native) ?
4385 					   BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
4386 	res->max_rx_qs = res->max_rss_qs + 1;
4387 
4388 	if (be_physfn(adapter))
4389 		res->max_evt_qs = (be_max_vfs(adapter) > 0) ?
4390 					BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
4391 	else
4392 		res->max_evt_qs = 1;
4393 
4394 	res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
4395 	res->if_cap_flags &= ~BE_IF_FLAGS_DEFQ_RSS;
4396 	if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))
4397 		res->if_cap_flags &= ~BE_IF_FLAGS_RSS;
4398 }
4399 
4400 static void be_setup_init(struct be_adapter *adapter)
4401 {
4402 	adapter->vlan_prio_bmap = 0xff;
4403 	adapter->phy.link_speed = -1;
4404 	adapter->if_handle = -1;
4405 	adapter->be3_native = false;
4406 	adapter->if_flags = 0;
4407 	adapter->phy_state = BE_UNKNOWN_PHY_STATE;
4408 	if (be_physfn(adapter))
4409 		adapter->cmd_privileges = MAX_PRIVILEGES;
4410 	else
4411 		adapter->cmd_privileges = MIN_PRIVILEGES;
4412 }
4413 
4414 /* HW supports only MAX_PORT_RSS_TABLES RSS Policy Tables per port.
4415  * However, this HW limitation is not exposed to the host via any SLI cmd.
4416  * As a result, in the case of SRIOV and in particular multi-partition configs
4417  * the driver needs to calcuate a proportional share of RSS Tables per PF-pool
4418  * for distribution between the VFs. This self-imposed limit will determine the
4419  * no: of VFs for which RSS can be enabled.
4420  */
4421 static void be_calculate_pf_pool_rss_tables(struct be_adapter *adapter)
4422 {
4423 	struct be_port_resources port_res = {0};
4424 	u8 rss_tables_on_port;
4425 	u16 max_vfs = be_max_vfs(adapter);
4426 
4427 	be_cmd_get_profile_config(adapter, NULL, &port_res, SAVED_PROFILE_TYPE,
4428 				  RESOURCE_LIMITS, 0);
4429 
4430 	rss_tables_on_port = MAX_PORT_RSS_TABLES - port_res.nic_pfs;
4431 
4432 	/* Each PF Pool's RSS Tables limit =
4433 	 * PF's Max VFs / Total_Max_VFs on Port * RSS Tables on Port
4434 	 */
4435 	adapter->pool_res.max_rss_tables =
4436 		max_vfs * rss_tables_on_port / port_res.max_vfs;
4437 }
4438 
4439 static int be_get_sriov_config(struct be_adapter *adapter)
4440 {
4441 	struct be_resources res = {0};
4442 	int max_vfs, old_vfs;
4443 
4444 	be_cmd_get_profile_config(adapter, &res, NULL, ACTIVE_PROFILE_TYPE,
4445 				  RESOURCE_LIMITS, 0);
4446 
4447 	/* Some old versions of BE3 FW don't report max_vfs value */
4448 	if (BE3_chip(adapter) && !res.max_vfs) {
4449 		max_vfs = pci_sriov_get_totalvfs(adapter->pdev);
4450 		res.max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
4451 	}
4452 
4453 	adapter->pool_res = res;
4454 
4455 	/* If during previous unload of the driver, the VFs were not disabled,
4456 	 * then we cannot rely on the PF POOL limits for the TotalVFs value.
4457 	 * Instead use the TotalVFs value stored in the pci-dev struct.
4458 	 */
4459 	old_vfs = pci_num_vf(adapter->pdev);
4460 	if (old_vfs) {
4461 		dev_info(&adapter->pdev->dev, "%d VFs are already enabled\n",
4462 			 old_vfs);
4463 
4464 		adapter->pool_res.max_vfs =
4465 			pci_sriov_get_totalvfs(adapter->pdev);
4466 		adapter->num_vfs = old_vfs;
4467 	}
4468 
4469 	if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4470 		be_calculate_pf_pool_rss_tables(adapter);
4471 		dev_info(&adapter->pdev->dev,
4472 			 "RSS can be enabled for all VFs if num_vfs <= %d\n",
4473 			 be_max_pf_pool_rss_tables(adapter));
4474 	}
4475 	return 0;
4476 }
4477 
4478 static void be_alloc_sriov_res(struct be_adapter *adapter)
4479 {
4480 	int old_vfs = pci_num_vf(adapter->pdev);
4481 	struct  be_resources vft_res = {0};
4482 	int status;
4483 
4484 	be_get_sriov_config(adapter);
4485 
4486 	if (!old_vfs)
4487 		pci_sriov_set_totalvfs(adapter->pdev, be_max_vfs(adapter));
4488 
4489 	/* When the HW is in SRIOV capable configuration, the PF-pool
4490 	 * resources are given to PF during driver load, if there are no
4491 	 * old VFs. This facility is not available in BE3 FW.
4492 	 * Also, this is done by FW in Lancer chip.
4493 	 */
4494 	if (skyhawk_chip(adapter) && be_max_vfs(adapter) && !old_vfs) {
4495 		be_calculate_vf_res(adapter, 0, &vft_res);
4496 		status = be_cmd_set_sriov_config(adapter, adapter->pool_res, 0,
4497 						 &vft_res);
4498 		if (status)
4499 			dev_err(&adapter->pdev->dev,
4500 				"Failed to optimize SRIOV resources\n");
4501 	}
4502 }
4503 
4504 static int be_get_resources(struct be_adapter *adapter)
4505 {
4506 	struct device *dev = &adapter->pdev->dev;
4507 	struct be_resources res = {0};
4508 	int status;
4509 
4510 	/* For Lancer, SH etc read per-function resource limits from FW.
4511 	 * GET_FUNC_CONFIG returns per function guaranteed limits.
4512 	 * GET_PROFILE_CONFIG returns PCI-E related limits PF-pool limits
4513 	 */
4514 	if (BEx_chip(adapter)) {
4515 		BEx_get_resources(adapter, &res);
4516 	} else {
4517 		status = be_cmd_get_func_config(adapter, &res);
4518 		if (status)
4519 			return status;
4520 
4521 		/* If a deafault RXQ must be created, we'll use up one RSSQ*/
4522 		if (res.max_rss_qs && res.max_rss_qs == res.max_rx_qs &&
4523 		    !(res.if_cap_flags & BE_IF_FLAGS_DEFQ_RSS))
4524 			res.max_rss_qs -= 1;
4525 	}
4526 
4527 	/* If RoCE is supported stash away half the EQs for RoCE */
4528 	res.max_nic_evt_qs = be_roce_supported(adapter) ?
4529 				res.max_evt_qs / 2 : res.max_evt_qs;
4530 	adapter->res = res;
4531 
4532 	/* If FW supports RSS default queue, then skip creating non-RSS
4533 	 * queue for non-IP traffic.
4534 	 */
4535 	adapter->need_def_rxq = (be_if_cap_flags(adapter) &
4536 				 BE_IF_FLAGS_DEFQ_RSS) ? 0 : 1;
4537 
4538 	dev_info(dev, "Max: txqs %d, rxqs %d, rss %d, eqs %d, vfs %d\n",
4539 		 be_max_txqs(adapter), be_max_rxqs(adapter),
4540 		 be_max_rss(adapter), be_max_nic_eqs(adapter),
4541 		 be_max_vfs(adapter));
4542 	dev_info(dev, "Max: uc-macs %d, mc-macs %d, vlans %d\n",
4543 		 be_max_uc(adapter), be_max_mc(adapter),
4544 		 be_max_vlans(adapter));
4545 
4546 	/* Ensure RX and TX queues are created in pairs at init time */
4547 	adapter->cfg_num_rx_irqs =
4548 				min_t(u16, netif_get_num_default_rss_queues(),
4549 				      be_max_qp_irqs(adapter));
4550 	adapter->cfg_num_tx_irqs = adapter->cfg_num_rx_irqs;
4551 	return 0;
4552 }
4553 
4554 static int be_get_config(struct be_adapter *adapter)
4555 {
4556 	int status, level;
4557 	u16 profile_id;
4558 
4559 	status = be_cmd_get_cntl_attributes(adapter);
4560 	if (status)
4561 		return status;
4562 
4563 	status = be_cmd_query_fw_cfg(adapter);
4564 	if (status)
4565 		return status;
4566 
4567 	if (!lancer_chip(adapter) && be_physfn(adapter))
4568 		be_cmd_get_fat_dump_len(adapter, &adapter->fat_dump_len);
4569 
4570 	if (BEx_chip(adapter)) {
4571 		level = be_cmd_get_fw_log_level(adapter);
4572 		adapter->msg_enable =
4573 			level <= FW_LOG_LEVEL_DEFAULT ? NETIF_MSG_HW : 0;
4574 	}
4575 
4576 	be_cmd_get_acpi_wol_cap(adapter);
4577 	pci_enable_wake(adapter->pdev, PCI_D3hot, adapter->wol_en);
4578 	pci_enable_wake(adapter->pdev, PCI_D3cold, adapter->wol_en);
4579 
4580 	be_cmd_query_port_name(adapter);
4581 
4582 	if (be_physfn(adapter)) {
4583 		status = be_cmd_get_active_profile(adapter, &profile_id);
4584 		if (!status)
4585 			dev_info(&adapter->pdev->dev,
4586 				 "Using profile 0x%x\n", profile_id);
4587 	}
4588 
4589 	return 0;
4590 }
4591 
4592 static int be_mac_setup(struct be_adapter *adapter)
4593 {
4594 	u8 mac[ETH_ALEN];
4595 	int status;
4596 
4597 	if (is_zero_ether_addr(adapter->netdev->dev_addr)) {
4598 		status = be_cmd_get_perm_mac(adapter, mac);
4599 		if (status)
4600 			return status;
4601 
4602 		eth_hw_addr_set(adapter->netdev, mac);
4603 		memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
4604 
4605 		/* Initial MAC for BE3 VFs is already programmed by PF */
4606 		if (BEx_chip(adapter) && be_virtfn(adapter))
4607 			memcpy(adapter->dev_mac, mac, ETH_ALEN);
4608 	}
4609 
4610 	return 0;
4611 }
4612 
4613 static void be_schedule_worker(struct be_adapter *adapter)
4614 {
4615 	queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
4616 	adapter->flags |= BE_FLAGS_WORKER_SCHEDULED;
4617 }
4618 
4619 static void be_destroy_err_recovery_workq(void)
4620 {
4621 	if (!be_err_recovery_workq)
4622 		return;
4623 
4624 	destroy_workqueue(be_err_recovery_workq);
4625 	be_err_recovery_workq = NULL;
4626 }
4627 
4628 static void be_schedule_err_detection(struct be_adapter *adapter, u32 delay)
4629 {
4630 	struct be_error_recovery *err_rec = &adapter->error_recovery;
4631 
4632 	if (!be_err_recovery_workq)
4633 		return;
4634 
4635 	queue_delayed_work(be_err_recovery_workq, &err_rec->err_detection_work,
4636 			   msecs_to_jiffies(delay));
4637 	adapter->flags |= BE_FLAGS_ERR_DETECTION_SCHEDULED;
4638 }
4639 
4640 static int be_setup_queues(struct be_adapter *adapter)
4641 {
4642 	struct net_device *netdev = adapter->netdev;
4643 	int status;
4644 
4645 	status = be_evt_queues_create(adapter);
4646 	if (status)
4647 		goto err;
4648 
4649 	status = be_tx_qs_create(adapter);
4650 	if (status)
4651 		goto err;
4652 
4653 	status = be_rx_cqs_create(adapter);
4654 	if (status)
4655 		goto err;
4656 
4657 	status = be_mcc_queues_create(adapter);
4658 	if (status)
4659 		goto err;
4660 
4661 	status = netif_set_real_num_rx_queues(netdev, adapter->num_rx_qs);
4662 	if (status)
4663 		goto err;
4664 
4665 	status = netif_set_real_num_tx_queues(netdev, adapter->num_tx_qs);
4666 	if (status)
4667 		goto err;
4668 
4669 	return 0;
4670 err:
4671 	dev_err(&adapter->pdev->dev, "queue_setup failed\n");
4672 	return status;
4673 }
4674 
4675 static int be_if_create(struct be_adapter *adapter)
4676 {
4677 	u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS;
4678 	u32 cap_flags = be_if_cap_flags(adapter);
4679 
4680 	/* alloc required memory for other filtering fields */
4681 	adapter->pmac_id = kcalloc(be_max_uc(adapter),
4682 				   sizeof(*adapter->pmac_id), GFP_KERNEL);
4683 	if (!adapter->pmac_id)
4684 		return -ENOMEM;
4685 
4686 	adapter->mc_list = kcalloc(be_max_mc(adapter),
4687 				   sizeof(*adapter->mc_list), GFP_KERNEL);
4688 	if (!adapter->mc_list)
4689 		return -ENOMEM;
4690 
4691 	adapter->uc_list = kcalloc(be_max_uc(adapter),
4692 				   sizeof(*adapter->uc_list), GFP_KERNEL);
4693 	if (!adapter->uc_list)
4694 		return -ENOMEM;
4695 
4696 	if (adapter->cfg_num_rx_irqs == 1)
4697 		cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS);
4698 
4699 	en_flags &= cap_flags;
4700 	/* will enable all the needed filter flags in be_open() */
4701 	return be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags,
4702 				  &adapter->if_handle, 0);
4703 }
4704 
4705 int be_update_queues(struct be_adapter *adapter)
4706 {
4707 	struct net_device *netdev = adapter->netdev;
4708 	int status;
4709 
4710 	if (netif_running(netdev)) {
4711 		/* be_tx_timeout() must not run concurrently with this
4712 		 * function, synchronize with an already-running dev_watchdog
4713 		 */
4714 		netif_tx_lock_bh(netdev);
4715 		/* device cannot transmit now, avoid dev_watchdog timeouts */
4716 		netif_carrier_off(netdev);
4717 		netif_tx_unlock_bh(netdev);
4718 
4719 		be_close(netdev);
4720 	}
4721 
4722 	be_cancel_worker(adapter);
4723 
4724 	/* If any vectors have been shared with RoCE we cannot re-program
4725 	 * the MSIx table.
4726 	 */
4727 	if (!adapter->num_msix_roce_vec)
4728 		be_msix_disable(adapter);
4729 
4730 	be_clear_queues(adapter);
4731 	status = be_cmd_if_destroy(adapter, adapter->if_handle,  0);
4732 	if (status)
4733 		return status;
4734 
4735 	if (!msix_enabled(adapter)) {
4736 		status = be_msix_enable(adapter);
4737 		if (status)
4738 			return status;
4739 	}
4740 
4741 	status = be_if_create(adapter);
4742 	if (status)
4743 		return status;
4744 
4745 	status = be_setup_queues(adapter);
4746 	if (status)
4747 		return status;
4748 
4749 	be_schedule_worker(adapter);
4750 
4751 	/* The IF was destroyed and re-created. We need to clear
4752 	 * all promiscuous flags valid for the destroyed IF.
4753 	 * Without this promisc mode is not restored during
4754 	 * be_open() because the driver thinks that it is
4755 	 * already enabled in HW.
4756 	 */
4757 	adapter->if_flags &= ~BE_IF_FLAGS_ALL_PROMISCUOUS;
4758 
4759 	if (netif_running(netdev))
4760 		status = be_open(netdev);
4761 
4762 	return status;
4763 }
4764 
4765 static inline int fw_major_num(const char *fw_ver)
4766 {
4767 	int fw_major = 0, i;
4768 
4769 	i = sscanf(fw_ver, "%d.", &fw_major);
4770 	if (i != 1)
4771 		return 0;
4772 
4773 	return fw_major;
4774 }
4775 
4776 /* If it is error recovery, FLR the PF
4777  * Else if any VFs are already enabled don't FLR the PF
4778  */
4779 static bool be_reset_required(struct be_adapter *adapter)
4780 {
4781 	if (be_error_recovering(adapter))
4782 		return true;
4783 	else
4784 		return pci_num_vf(adapter->pdev) == 0;
4785 }
4786 
4787 /* Wait for the FW to be ready and perform the required initialization */
4788 static int be_func_init(struct be_adapter *adapter)
4789 {
4790 	int status;
4791 
4792 	status = be_fw_wait_ready(adapter);
4793 	if (status)
4794 		return status;
4795 
4796 	/* FW is now ready; clear errors to allow cmds/doorbell */
4797 	be_clear_error(adapter, BE_CLEAR_ALL);
4798 
4799 	if (be_reset_required(adapter)) {
4800 		status = be_cmd_reset_function(adapter);
4801 		if (status)
4802 			return status;
4803 
4804 		/* Wait for interrupts to quiesce after an FLR */
4805 		msleep(100);
4806 	}
4807 
4808 	/* Tell FW we're ready to fire cmds */
4809 	status = be_cmd_fw_init(adapter);
4810 	if (status)
4811 		return status;
4812 
4813 	/* Allow interrupts for other ULPs running on NIC function */
4814 	be_intr_set(adapter, true);
4815 
4816 	return 0;
4817 }
4818 
4819 static int be_setup(struct be_adapter *adapter)
4820 {
4821 	struct device *dev = &adapter->pdev->dev;
4822 	int status;
4823 
4824 	status = be_func_init(adapter);
4825 	if (status)
4826 		return status;
4827 
4828 	be_setup_init(adapter);
4829 
4830 	if (!lancer_chip(adapter))
4831 		be_cmd_req_native_mode(adapter);
4832 
4833 	/* invoke this cmd first to get pf_num and vf_num which are needed
4834 	 * for issuing profile related cmds
4835 	 */
4836 	if (!BEx_chip(adapter)) {
4837 		status = be_cmd_get_func_config(adapter, NULL);
4838 		if (status)
4839 			return status;
4840 	}
4841 
4842 	status = be_get_config(adapter);
4843 	if (status)
4844 		goto err;
4845 
4846 	if (!BE2_chip(adapter) && be_physfn(adapter))
4847 		be_alloc_sriov_res(adapter);
4848 
4849 	status = be_get_resources(adapter);
4850 	if (status)
4851 		goto err;
4852 
4853 	status = be_msix_enable(adapter);
4854 	if (status)
4855 		goto err;
4856 
4857 	/* will enable all the needed filter flags in be_open() */
4858 	status = be_if_create(adapter);
4859 	if (status)
4860 		goto err;
4861 
4862 	/* Updating real_num_tx/rx_queues() requires rtnl_lock() */
4863 	rtnl_lock();
4864 	status = be_setup_queues(adapter);
4865 	rtnl_unlock();
4866 	if (status)
4867 		goto err;
4868 
4869 	be_cmd_get_fn_privileges(adapter, &adapter->cmd_privileges, 0);
4870 
4871 	status = be_mac_setup(adapter);
4872 	if (status)
4873 		goto err;
4874 
4875 	be_cmd_get_fw_ver(adapter);
4876 	dev_info(dev, "FW version is %s\n", adapter->fw_ver);
4877 
4878 	if (BE2_chip(adapter) && fw_major_num(adapter->fw_ver) < 4) {
4879 		dev_err(dev, "Firmware on card is old(%s), IRQs may not work",
4880 			adapter->fw_ver);
4881 		dev_err(dev, "Please upgrade firmware to version >= 4.0\n");
4882 	}
4883 
4884 	status = be_cmd_set_flow_control(adapter, adapter->tx_fc,
4885 					 adapter->rx_fc);
4886 	if (status)
4887 		be_cmd_get_flow_control(adapter, &adapter->tx_fc,
4888 					&adapter->rx_fc);
4889 
4890 	dev_info(&adapter->pdev->dev, "HW Flow control - TX:%d RX:%d\n",
4891 		 adapter->tx_fc, adapter->rx_fc);
4892 
4893 	if (be_physfn(adapter))
4894 		be_cmd_set_logical_link_config(adapter,
4895 					       IFLA_VF_LINK_STATE_AUTO, 0);
4896 
4897 	/* BE3 EVB echoes broadcast/multicast packets back to PF's vport
4898 	 * confusing a linux bridge or OVS that it might be connected to.
4899 	 * Set the EVB to PASSTHRU mode which effectively disables the EVB
4900 	 * when SRIOV is not enabled.
4901 	 */
4902 	if (BE3_chip(adapter))
4903 		be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle,
4904 				      PORT_FWD_TYPE_PASSTHRU, 0);
4905 
4906 	if (adapter->num_vfs)
4907 		be_vf_setup(adapter);
4908 
4909 	status = be_cmd_get_phy_info(adapter);
4910 	if (!status && be_pause_supported(adapter))
4911 		adapter->phy.fc_autoneg = 1;
4912 
4913 	if (be_physfn(adapter) && !lancer_chip(adapter))
4914 		be_cmd_set_features(adapter);
4915 
4916 	be_schedule_worker(adapter);
4917 	adapter->flags |= BE_FLAGS_SETUP_DONE;
4918 	return 0;
4919 err:
4920 	be_clear(adapter);
4921 	return status;
4922 }
4923 
4924 #ifdef CONFIG_NET_POLL_CONTROLLER
4925 static void be_netpoll(struct net_device *netdev)
4926 {
4927 	struct be_adapter *adapter = netdev_priv(netdev);
4928 	struct be_eq_obj *eqo;
4929 	int i;
4930 
4931 	for_all_evt_queues(adapter, eqo, i) {
4932 		be_eq_notify(eqo->adapter, eqo->q.id, false, true, 0, 0);
4933 		napi_schedule(&eqo->napi);
4934 	}
4935 }
4936 #endif
4937 
4938 int be_load_fw(struct be_adapter *adapter, u8 *fw_file)
4939 {
4940 	const struct firmware *fw;
4941 	int status;
4942 
4943 	if (!netif_running(adapter->netdev)) {
4944 		dev_err(&adapter->pdev->dev,
4945 			"Firmware load not allowed (interface is down)\n");
4946 		return -ENETDOWN;
4947 	}
4948 
4949 	status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
4950 	if (status)
4951 		goto fw_exit;
4952 
4953 	dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
4954 
4955 	if (lancer_chip(adapter))
4956 		status = lancer_fw_download(adapter, fw);
4957 	else
4958 		status = be_fw_download(adapter, fw);
4959 
4960 	if (!status)
4961 		be_cmd_get_fw_ver(adapter);
4962 
4963 fw_exit:
4964 	release_firmware(fw);
4965 	return status;
4966 }
4967 
4968 static int be_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
4969 				 u16 flags, struct netlink_ext_ack *extack)
4970 {
4971 	struct be_adapter *adapter = netdev_priv(dev);
4972 	struct nlattr *attr, *br_spec;
4973 	int rem;
4974 	int status = 0;
4975 	u16 mode = 0;
4976 
4977 	if (!sriov_enabled(adapter))
4978 		return -EOPNOTSUPP;
4979 
4980 	br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
4981 	if (!br_spec)
4982 		return -EINVAL;
4983 
4984 	nla_for_each_nested(attr, br_spec, rem) {
4985 		if (nla_type(attr) != IFLA_BRIDGE_MODE)
4986 			continue;
4987 
4988 		if (nla_len(attr) < sizeof(mode))
4989 			return -EINVAL;
4990 
4991 		mode = nla_get_u16(attr);
4992 		if (BE3_chip(adapter) && mode == BRIDGE_MODE_VEPA)
4993 			return -EOPNOTSUPP;
4994 
4995 		if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
4996 			return -EINVAL;
4997 
4998 		status = be_cmd_set_hsw_config(adapter, 0, 0,
4999 					       adapter->if_handle,
5000 					       mode == BRIDGE_MODE_VEPA ?
5001 					       PORT_FWD_TYPE_VEPA :
5002 					       PORT_FWD_TYPE_VEB, 0);
5003 		if (status)
5004 			goto err;
5005 
5006 		dev_info(&adapter->pdev->dev, "enabled switch mode: %s\n",
5007 			 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5008 
5009 		return status;
5010 	}
5011 err:
5012 	dev_err(&adapter->pdev->dev, "Failed to set switch mode %s\n",
5013 		mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5014 
5015 	return status;
5016 }
5017 
5018 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
5019 				 struct net_device *dev, u32 filter_mask,
5020 				 int nlflags)
5021 {
5022 	struct be_adapter *adapter = netdev_priv(dev);
5023 	int status = 0;
5024 	u8 hsw_mode;
5025 
5026 	/* BE and Lancer chips support VEB mode only */
5027 	if (BEx_chip(adapter) || lancer_chip(adapter)) {
5028 		/* VEB is disabled in non-SR-IOV profiles on BE3/Lancer */
5029 		if (!pci_sriov_get_totalvfs(adapter->pdev))
5030 			return 0;
5031 		hsw_mode = PORT_FWD_TYPE_VEB;
5032 	} else {
5033 		status = be_cmd_get_hsw_config(adapter, NULL, 0,
5034 					       adapter->if_handle, &hsw_mode,
5035 					       NULL);
5036 		if (status)
5037 			return 0;
5038 
5039 		if (hsw_mode == PORT_FWD_TYPE_PASSTHRU)
5040 			return 0;
5041 	}
5042 
5043 	return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
5044 				       hsw_mode == PORT_FWD_TYPE_VEPA ?
5045 				       BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
5046 				       0, 0, nlflags, filter_mask, NULL);
5047 }
5048 
5049 static struct be_cmd_work *be_alloc_work(struct be_adapter *adapter,
5050 					 void (*func)(struct work_struct *))
5051 {
5052 	struct be_cmd_work *work;
5053 
5054 	work = kzalloc(sizeof(*work), GFP_ATOMIC);
5055 	if (!work) {
5056 		dev_err(&adapter->pdev->dev,
5057 			"be_work memory allocation failed\n");
5058 		return NULL;
5059 	}
5060 
5061 	INIT_WORK(&work->work, func);
5062 	work->adapter = adapter;
5063 	return work;
5064 }
5065 
5066 static netdev_features_t be_features_check(struct sk_buff *skb,
5067 					   struct net_device *dev,
5068 					   netdev_features_t features)
5069 {
5070 	struct be_adapter *adapter = netdev_priv(dev);
5071 	u8 l4_hdr = 0;
5072 
5073 	if (skb_is_gso(skb)) {
5074 		/* IPv6 TSO requests with extension hdrs are a problem
5075 		 * to Lancer and BE3 HW. Disable TSO6 feature.
5076 		 */
5077 		if (!skyhawk_chip(adapter) && is_ipv6_ext_hdr(skb))
5078 			features &= ~NETIF_F_TSO6;
5079 
5080 		/* Lancer cannot handle the packet with MSS less than 256.
5081 		 * Also it can't handle a TSO packet with a single segment
5082 		 * Disable the GSO support in such cases
5083 		 */
5084 		if (lancer_chip(adapter) &&
5085 		    (skb_shinfo(skb)->gso_size < 256 ||
5086 		     skb_shinfo(skb)->gso_segs == 1))
5087 			features &= ~NETIF_F_GSO_MASK;
5088 	}
5089 
5090 	/* The code below restricts offload features for some tunneled and
5091 	 * Q-in-Q packets.
5092 	 * Offload features for normal (non tunnel) packets are unchanged.
5093 	 */
5094 	features = vlan_features_check(skb, features);
5095 	if (!skb->encapsulation ||
5096 	    !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS))
5097 		return features;
5098 
5099 	/* It's an encapsulated packet and VxLAN offloads are enabled. We
5100 	 * should disable tunnel offload features if it's not a VxLAN packet,
5101 	 * as tunnel offloads have been enabled only for VxLAN. This is done to
5102 	 * allow other tunneled traffic like GRE work fine while VxLAN
5103 	 * offloads are configured in Skyhawk-R.
5104 	 */
5105 	switch (vlan_get_protocol(skb)) {
5106 	case htons(ETH_P_IP):
5107 		l4_hdr = ip_hdr(skb)->protocol;
5108 		break;
5109 	case htons(ETH_P_IPV6):
5110 		l4_hdr = ipv6_hdr(skb)->nexthdr;
5111 		break;
5112 	default:
5113 		return features;
5114 	}
5115 
5116 	if (l4_hdr != IPPROTO_UDP ||
5117 	    skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
5118 	    skb->inner_protocol != htons(ETH_P_TEB) ||
5119 	    skb_inner_mac_header(skb) - skb_transport_header(skb) !=
5120 		sizeof(struct udphdr) + sizeof(struct vxlanhdr) ||
5121 	    !adapter->vxlan_port ||
5122 	    udp_hdr(skb)->dest != adapter->vxlan_port)
5123 		return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
5124 
5125 	return features;
5126 }
5127 
5128 static int be_get_phys_port_id(struct net_device *dev,
5129 			       struct netdev_phys_item_id *ppid)
5130 {
5131 	int i, id_len = CNTL_SERIAL_NUM_WORDS * CNTL_SERIAL_NUM_WORD_SZ + 1;
5132 	struct be_adapter *adapter = netdev_priv(dev);
5133 	u8 *id;
5134 
5135 	if (MAX_PHYS_ITEM_ID_LEN < id_len)
5136 		return -ENOSPC;
5137 
5138 	ppid->id[0] = adapter->hba_port_num + 1;
5139 	id = &ppid->id[1];
5140 	for (i = CNTL_SERIAL_NUM_WORDS - 1; i >= 0;
5141 	     i--, id += CNTL_SERIAL_NUM_WORD_SZ)
5142 		memcpy(id, &adapter->serial_num[i], CNTL_SERIAL_NUM_WORD_SZ);
5143 
5144 	ppid->id_len = id_len;
5145 
5146 	return 0;
5147 }
5148 
5149 static void be_set_rx_mode(struct net_device *dev)
5150 {
5151 	struct be_adapter *adapter = netdev_priv(dev);
5152 	struct be_cmd_work *work;
5153 
5154 	work = be_alloc_work(adapter, be_work_set_rx_mode);
5155 	if (work)
5156 		queue_work(be_wq, &work->work);
5157 }
5158 
5159 static const struct net_device_ops be_netdev_ops = {
5160 	.ndo_open		= be_open,
5161 	.ndo_stop		= be_close,
5162 	.ndo_start_xmit		= be_xmit,
5163 	.ndo_set_rx_mode	= be_set_rx_mode,
5164 	.ndo_set_mac_address	= be_mac_addr_set,
5165 	.ndo_get_stats64	= be_get_stats64,
5166 	.ndo_validate_addr	= eth_validate_addr,
5167 	.ndo_vlan_rx_add_vid	= be_vlan_add_vid,
5168 	.ndo_vlan_rx_kill_vid	= be_vlan_rem_vid,
5169 	.ndo_set_vf_mac		= be_set_vf_mac,
5170 	.ndo_set_vf_vlan	= be_set_vf_vlan,
5171 	.ndo_set_vf_rate	= be_set_vf_tx_rate,
5172 	.ndo_get_vf_config	= be_get_vf_config,
5173 	.ndo_set_vf_link_state  = be_set_vf_link_state,
5174 	.ndo_set_vf_spoofchk    = be_set_vf_spoofchk,
5175 	.ndo_tx_timeout		= be_tx_timeout,
5176 #ifdef CONFIG_NET_POLL_CONTROLLER
5177 	.ndo_poll_controller	= be_netpoll,
5178 #endif
5179 	.ndo_bridge_setlink	= be_ndo_bridge_setlink,
5180 	.ndo_bridge_getlink	= be_ndo_bridge_getlink,
5181 	.ndo_features_check	= be_features_check,
5182 	.ndo_get_phys_port_id   = be_get_phys_port_id,
5183 };
5184 
5185 static void be_netdev_init(struct net_device *netdev)
5186 {
5187 	struct be_adapter *adapter = netdev_priv(netdev);
5188 
5189 	netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5190 		NETIF_F_GSO_UDP_TUNNEL |
5191 		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM |
5192 		NETIF_F_HW_VLAN_CTAG_TX;
5193 	if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS))
5194 		netdev->hw_features |= NETIF_F_RXHASH;
5195 
5196 	netdev->features |= netdev->hw_features |
5197 		NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER |
5198 		NETIF_F_HIGHDMA;
5199 
5200 	netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
5201 		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
5202 
5203 	netdev->priv_flags |= IFF_UNICAST_FLT;
5204 
5205 	netdev->flags |= IFF_MULTICAST;
5206 
5207 	netif_set_tso_max_size(netdev, BE_MAX_GSO_SIZE - ETH_HLEN);
5208 
5209 	netdev->netdev_ops = &be_netdev_ops;
5210 
5211 	netdev->ethtool_ops = &be_ethtool_ops;
5212 
5213 	if (!lancer_chip(adapter) && !BEx_chip(adapter) && !be_is_mc(adapter))
5214 		netdev->udp_tunnel_nic_info = &be_udp_tunnels;
5215 
5216 	/* MTU range: 256 - 9000 */
5217 	netdev->min_mtu = BE_MIN_MTU;
5218 	netdev->max_mtu = BE_MAX_MTU;
5219 }
5220 
5221 static void be_cleanup(struct be_adapter *adapter)
5222 {
5223 	struct net_device *netdev = adapter->netdev;
5224 
5225 	rtnl_lock();
5226 	netif_device_detach(netdev);
5227 	if (netif_running(netdev))
5228 		be_close(netdev);
5229 	rtnl_unlock();
5230 
5231 	be_clear(adapter);
5232 }
5233 
5234 static int be_resume(struct be_adapter *adapter)
5235 {
5236 	struct net_device *netdev = adapter->netdev;
5237 	int status;
5238 
5239 	status = be_setup(adapter);
5240 	if (status)
5241 		return status;
5242 
5243 	rtnl_lock();
5244 	if (netif_running(netdev))
5245 		status = be_open(netdev);
5246 	rtnl_unlock();
5247 
5248 	if (status)
5249 		return status;
5250 
5251 	netif_device_attach(netdev);
5252 
5253 	return 0;
5254 }
5255 
5256 static void be_soft_reset(struct be_adapter *adapter)
5257 {
5258 	u32 val;
5259 
5260 	dev_info(&adapter->pdev->dev, "Initiating chip soft reset\n");
5261 	val = ioread32(adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5262 	val |= SLIPORT_SOFTRESET_SR_MASK;
5263 	iowrite32(val, adapter->pcicfg + SLIPORT_SOFTRESET_OFFSET);
5264 }
5265 
5266 static bool be_err_is_recoverable(struct be_adapter *adapter)
5267 {
5268 	struct be_error_recovery *err_rec = &adapter->error_recovery;
5269 	unsigned long initial_idle_time =
5270 		msecs_to_jiffies(ERR_RECOVERY_IDLE_TIME);
5271 	unsigned long recovery_interval =
5272 		msecs_to_jiffies(ERR_RECOVERY_INTERVAL);
5273 	u16 ue_err_code;
5274 	u32 val;
5275 
5276 	val = be_POST_stage_get(adapter);
5277 	if ((val & POST_STAGE_RECOVERABLE_ERR) != POST_STAGE_RECOVERABLE_ERR)
5278 		return false;
5279 	ue_err_code = val & POST_ERR_RECOVERY_CODE_MASK;
5280 	if (ue_err_code == 0)
5281 		return false;
5282 
5283 	dev_err(&adapter->pdev->dev, "Recoverable HW error code: 0x%x\n",
5284 		ue_err_code);
5285 
5286 	if (time_before_eq(jiffies - err_rec->probe_time, initial_idle_time)) {
5287 		dev_err(&adapter->pdev->dev,
5288 			"Cannot recover within %lu sec from driver load\n",
5289 			jiffies_to_msecs(initial_idle_time) / MSEC_PER_SEC);
5290 		return false;
5291 	}
5292 
5293 	if (err_rec->last_recovery_time && time_before_eq(
5294 		jiffies - err_rec->last_recovery_time, recovery_interval)) {
5295 		dev_err(&adapter->pdev->dev,
5296 			"Cannot recover within %lu sec from last recovery\n",
5297 			jiffies_to_msecs(recovery_interval) / MSEC_PER_SEC);
5298 		return false;
5299 	}
5300 
5301 	if (ue_err_code == err_rec->last_err_code) {
5302 		dev_err(&adapter->pdev->dev,
5303 			"Cannot recover from a consecutive TPE error\n");
5304 		return false;
5305 	}
5306 
5307 	err_rec->last_recovery_time = jiffies;
5308 	err_rec->last_err_code = ue_err_code;
5309 	return true;
5310 }
5311 
5312 static int be_tpe_recover(struct be_adapter *adapter)
5313 {
5314 	struct be_error_recovery *err_rec = &adapter->error_recovery;
5315 	int status = -EAGAIN;
5316 	u32 val;
5317 
5318 	switch (err_rec->recovery_state) {
5319 	case ERR_RECOVERY_ST_NONE:
5320 		err_rec->recovery_state = ERR_RECOVERY_ST_DETECT;
5321 		err_rec->resched_delay = ERR_RECOVERY_UE_DETECT_DURATION;
5322 		break;
5323 
5324 	case ERR_RECOVERY_ST_DETECT:
5325 		val = be_POST_stage_get(adapter);
5326 		if ((val & POST_STAGE_RECOVERABLE_ERR) !=
5327 		    POST_STAGE_RECOVERABLE_ERR) {
5328 			dev_err(&adapter->pdev->dev,
5329 				"Unrecoverable HW error detected: 0x%x\n", val);
5330 			status = -EINVAL;
5331 			err_rec->resched_delay = 0;
5332 			break;
5333 		}
5334 
5335 		dev_err(&adapter->pdev->dev, "Recoverable HW error detected\n");
5336 
5337 		/* Only PF0 initiates Chip Soft Reset. But PF0 must wait UE2SR
5338 		 * milliseconds before it checks for final error status in
5339 		 * SLIPORT_SEMAPHORE to determine if recovery criteria is met.
5340 		 * If it does, then PF0 initiates a Soft Reset.
5341 		 */
5342 		if (adapter->pf_num == 0) {
5343 			err_rec->recovery_state = ERR_RECOVERY_ST_RESET;
5344 			err_rec->resched_delay = err_rec->ue_to_reset_time -
5345 					ERR_RECOVERY_UE_DETECT_DURATION;
5346 			break;
5347 		}
5348 
5349 		err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5350 		err_rec->resched_delay = err_rec->ue_to_poll_time -
5351 					ERR_RECOVERY_UE_DETECT_DURATION;
5352 		break;
5353 
5354 	case ERR_RECOVERY_ST_RESET:
5355 		if (!be_err_is_recoverable(adapter)) {
5356 			dev_err(&adapter->pdev->dev,
5357 				"Failed to meet recovery criteria\n");
5358 			status = -EIO;
5359 			err_rec->resched_delay = 0;
5360 			break;
5361 		}
5362 		be_soft_reset(adapter);
5363 		err_rec->recovery_state = ERR_RECOVERY_ST_PRE_POLL;
5364 		err_rec->resched_delay = err_rec->ue_to_poll_time -
5365 					err_rec->ue_to_reset_time;
5366 		break;
5367 
5368 	case ERR_RECOVERY_ST_PRE_POLL:
5369 		err_rec->recovery_state = ERR_RECOVERY_ST_REINIT;
5370 		err_rec->resched_delay = 0;
5371 		status = 0;			/* done */
5372 		break;
5373 
5374 	default:
5375 		status = -EINVAL;
5376 		err_rec->resched_delay = 0;
5377 		break;
5378 	}
5379 
5380 	return status;
5381 }
5382 
5383 static int be_err_recover(struct be_adapter *adapter)
5384 {
5385 	int status;
5386 
5387 	if (!lancer_chip(adapter)) {
5388 		if (!adapter->error_recovery.recovery_supported ||
5389 		    adapter->priv_flags & BE_DISABLE_TPE_RECOVERY)
5390 			return -EIO;
5391 		status = be_tpe_recover(adapter);
5392 		if (status)
5393 			goto err;
5394 	}
5395 
5396 	/* Wait for adapter to reach quiescent state before
5397 	 * destroying queues
5398 	 */
5399 	status = be_fw_wait_ready(adapter);
5400 	if (status)
5401 		goto err;
5402 
5403 	adapter->flags |= BE_FLAGS_TRY_RECOVERY;
5404 
5405 	be_cleanup(adapter);
5406 
5407 	status = be_resume(adapter);
5408 	if (status)
5409 		goto err;
5410 
5411 	adapter->flags &= ~BE_FLAGS_TRY_RECOVERY;
5412 
5413 err:
5414 	return status;
5415 }
5416 
5417 static void be_err_detection_task(struct work_struct *work)
5418 {
5419 	struct be_error_recovery *err_rec =
5420 			container_of(work, struct be_error_recovery,
5421 				     err_detection_work.work);
5422 	struct be_adapter *adapter =
5423 			container_of(err_rec, struct be_adapter,
5424 				     error_recovery);
5425 	u32 resched_delay = ERR_RECOVERY_DETECTION_DELAY;
5426 	struct device *dev = &adapter->pdev->dev;
5427 	int recovery_status;
5428 
5429 	be_detect_error(adapter);
5430 	if (!be_check_error(adapter, BE_ERROR_HW))
5431 		goto reschedule_task;
5432 
5433 	recovery_status = be_err_recover(adapter);
5434 	if (!recovery_status) {
5435 		err_rec->recovery_retries = 0;
5436 		err_rec->recovery_state = ERR_RECOVERY_ST_NONE;
5437 		dev_info(dev, "Adapter recovery successful\n");
5438 		goto reschedule_task;
5439 	} else if (!lancer_chip(adapter) && err_rec->resched_delay) {
5440 		/* BEx/SH recovery state machine */
5441 		if (adapter->pf_num == 0 &&
5442 		    err_rec->recovery_state > ERR_RECOVERY_ST_DETECT)
5443 			dev_err(&adapter->pdev->dev,
5444 				"Adapter recovery in progress\n");
5445 		resched_delay = err_rec->resched_delay;
5446 		goto reschedule_task;
5447 	} else if (lancer_chip(adapter) && be_virtfn(adapter)) {
5448 		/* For VFs, check if PF have allocated resources
5449 		 * every second.
5450 		 */
5451 		dev_err(dev, "Re-trying adapter recovery\n");
5452 		goto reschedule_task;
5453 	} else if (lancer_chip(adapter) && err_rec->recovery_retries++ <
5454 		   ERR_RECOVERY_MAX_RETRY_COUNT) {
5455 		/* In case of another error during recovery, it takes 30 sec
5456 		 * for adapter to come out of error. Retry error recovery after
5457 		 * this time interval.
5458 		 */
5459 		dev_err(&adapter->pdev->dev, "Re-trying adapter recovery\n");
5460 		resched_delay = ERR_RECOVERY_RETRY_DELAY;
5461 		goto reschedule_task;
5462 	} else {
5463 		dev_err(dev, "Adapter recovery failed\n");
5464 		dev_err(dev, "Please reboot server to recover\n");
5465 	}
5466 
5467 	return;
5468 
5469 reschedule_task:
5470 	be_schedule_err_detection(adapter, resched_delay);
5471 }
5472 
5473 static void be_log_sfp_info(struct be_adapter *adapter)
5474 {
5475 	int status;
5476 
5477 	status = be_cmd_query_sfp_info(adapter);
5478 	if (!status) {
5479 		dev_err(&adapter->pdev->dev,
5480 			"Port %c: %s Vendor: %s part no: %s",
5481 			adapter->port_name,
5482 			be_misconfig_evt_port_state[adapter->phy_state],
5483 			adapter->phy.vendor_name,
5484 			adapter->phy.vendor_pn);
5485 	}
5486 	adapter->flags &= ~BE_FLAGS_PHY_MISCONFIGURED;
5487 }
5488 
5489 static void be_worker(struct work_struct *work)
5490 {
5491 	struct be_adapter *adapter =
5492 		container_of(work, struct be_adapter, work.work);
5493 	struct be_rx_obj *rxo;
5494 	int i;
5495 
5496 	if (be_physfn(adapter) &&
5497 	    MODULO(adapter->work_counter, adapter->be_get_temp_freq) == 0)
5498 		be_cmd_get_die_temperature(adapter);
5499 
5500 	/* when interrupts are not yet enabled, just reap any pending
5501 	 * mcc completions
5502 	 */
5503 	if (!netif_running(adapter->netdev)) {
5504 		local_bh_disable();
5505 		be_process_mcc(adapter);
5506 		local_bh_enable();
5507 		goto reschedule;
5508 	}
5509 
5510 	if (!adapter->stats_cmd_sent) {
5511 		if (lancer_chip(adapter))
5512 			lancer_cmd_get_pport_stats(adapter,
5513 						   &adapter->stats_cmd);
5514 		else
5515 			be_cmd_get_stats(adapter, &adapter->stats_cmd);
5516 	}
5517 
5518 	for_all_rx_queues(adapter, rxo, i) {
5519 		/* Replenish RX-queues starved due to memory
5520 		 * allocation failures.
5521 		 */
5522 		if (rxo->rx_post_starved)
5523 			be_post_rx_frags(rxo, GFP_KERNEL, MAX_RX_POST);
5524 	}
5525 
5526 	/* EQ-delay update for Skyhawk is done while notifying EQ */
5527 	if (!skyhawk_chip(adapter))
5528 		be_eqd_update(adapter, false);
5529 
5530 	if (adapter->flags & BE_FLAGS_PHY_MISCONFIGURED)
5531 		be_log_sfp_info(adapter);
5532 
5533 reschedule:
5534 	adapter->work_counter++;
5535 	queue_delayed_work(be_wq, &adapter->work, msecs_to_jiffies(1000));
5536 }
5537 
5538 static void be_unmap_pci_bars(struct be_adapter *adapter)
5539 {
5540 	if (adapter->csr)
5541 		pci_iounmap(adapter->pdev, adapter->csr);
5542 	if (adapter->db)
5543 		pci_iounmap(adapter->pdev, adapter->db);
5544 	if (adapter->pcicfg && adapter->pcicfg_mapped)
5545 		pci_iounmap(adapter->pdev, adapter->pcicfg);
5546 }
5547 
5548 static int db_bar(struct be_adapter *adapter)
5549 {
5550 	if (lancer_chip(adapter) || be_virtfn(adapter))
5551 		return 0;
5552 	else
5553 		return 4;
5554 }
5555 
5556 static int be_roce_map_pci_bars(struct be_adapter *adapter)
5557 {
5558 	if (skyhawk_chip(adapter)) {
5559 		adapter->roce_db.size = 4096;
5560 		adapter->roce_db.io_addr = pci_resource_start(adapter->pdev,
5561 							      db_bar(adapter));
5562 		adapter->roce_db.total_size = pci_resource_len(adapter->pdev,
5563 							       db_bar(adapter));
5564 	}
5565 	return 0;
5566 }
5567 
5568 static int be_map_pci_bars(struct be_adapter *adapter)
5569 {
5570 	struct pci_dev *pdev = adapter->pdev;
5571 	u8 __iomem *addr;
5572 	u32 sli_intf;
5573 
5574 	pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
5575 	adapter->sli_family = (sli_intf & SLI_INTF_FAMILY_MASK) >>
5576 				SLI_INTF_FAMILY_SHIFT;
5577 	adapter->virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
5578 
5579 	if (BEx_chip(adapter) && be_physfn(adapter)) {
5580 		adapter->csr = pci_iomap(pdev, 2, 0);
5581 		if (!adapter->csr)
5582 			return -ENOMEM;
5583 	}
5584 
5585 	addr = pci_iomap(pdev, db_bar(adapter), 0);
5586 	if (!addr)
5587 		goto pci_map_err;
5588 	adapter->db = addr;
5589 
5590 	if (skyhawk_chip(adapter) || BEx_chip(adapter)) {
5591 		if (be_physfn(adapter)) {
5592 			/* PCICFG is the 2nd BAR in BE2 */
5593 			addr = pci_iomap(pdev, BE2_chip(adapter) ? 1 : 0, 0);
5594 			if (!addr)
5595 				goto pci_map_err;
5596 			adapter->pcicfg = addr;
5597 			adapter->pcicfg_mapped = true;
5598 		} else {
5599 			adapter->pcicfg = adapter->db + SRIOV_VF_PCICFG_OFFSET;
5600 			adapter->pcicfg_mapped = false;
5601 		}
5602 	}
5603 
5604 	be_roce_map_pci_bars(adapter);
5605 	return 0;
5606 
5607 pci_map_err:
5608 	dev_err(&pdev->dev, "Error in mapping PCI BARs\n");
5609 	be_unmap_pci_bars(adapter);
5610 	return -ENOMEM;
5611 }
5612 
5613 static void be_drv_cleanup(struct be_adapter *adapter)
5614 {
5615 	struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
5616 	struct device *dev = &adapter->pdev->dev;
5617 
5618 	if (mem->va)
5619 		dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5620 
5621 	mem = &adapter->rx_filter;
5622 	if (mem->va)
5623 		dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5624 
5625 	mem = &adapter->stats_cmd;
5626 	if (mem->va)
5627 		dma_free_coherent(dev, mem->size, mem->va, mem->dma);
5628 }
5629 
5630 /* Allocate and initialize various fields in be_adapter struct */
5631 static int be_drv_init(struct be_adapter *adapter)
5632 {
5633 	struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
5634 	struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
5635 	struct be_dma_mem *rx_filter = &adapter->rx_filter;
5636 	struct be_dma_mem *stats_cmd = &adapter->stats_cmd;
5637 	struct device *dev = &adapter->pdev->dev;
5638 	int status = 0;
5639 
5640 	mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
5641 	mbox_mem_alloc->va = dma_alloc_coherent(dev, mbox_mem_alloc->size,
5642 						&mbox_mem_alloc->dma,
5643 						GFP_KERNEL);
5644 	if (!mbox_mem_alloc->va)
5645 		return -ENOMEM;
5646 
5647 	mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
5648 	mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
5649 	mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
5650 
5651 	rx_filter->size = sizeof(struct be_cmd_req_rx_filter);
5652 	rx_filter->va = dma_alloc_coherent(dev, rx_filter->size,
5653 					   &rx_filter->dma, GFP_KERNEL);
5654 	if (!rx_filter->va) {
5655 		status = -ENOMEM;
5656 		goto free_mbox;
5657 	}
5658 
5659 	if (lancer_chip(adapter))
5660 		stats_cmd->size = sizeof(struct lancer_cmd_req_pport_stats);
5661 	else if (BE2_chip(adapter))
5662 		stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v0);
5663 	else if (BE3_chip(adapter))
5664 		stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v1);
5665 	else
5666 		stats_cmd->size = sizeof(struct be_cmd_req_get_stats_v2);
5667 	stats_cmd->va = dma_alloc_coherent(dev, stats_cmd->size,
5668 					   &stats_cmd->dma, GFP_KERNEL);
5669 	if (!stats_cmd->va) {
5670 		status = -ENOMEM;
5671 		goto free_rx_filter;
5672 	}
5673 
5674 	mutex_init(&adapter->mbox_lock);
5675 	mutex_init(&adapter->mcc_lock);
5676 	mutex_init(&adapter->rx_filter_lock);
5677 	spin_lock_init(&adapter->mcc_cq_lock);
5678 	init_completion(&adapter->et_cmd_compl);
5679 
5680 	pci_save_state(adapter->pdev);
5681 
5682 	INIT_DELAYED_WORK(&adapter->work, be_worker);
5683 
5684 	adapter->error_recovery.recovery_state = ERR_RECOVERY_ST_NONE;
5685 	adapter->error_recovery.resched_delay = 0;
5686 	INIT_DELAYED_WORK(&adapter->error_recovery.err_detection_work,
5687 			  be_err_detection_task);
5688 
5689 	adapter->rx_fc = true;
5690 	adapter->tx_fc = true;
5691 
5692 	/* Must be a power of 2 or else MODULO will BUG_ON */
5693 	adapter->be_get_temp_freq = 64;
5694 
5695 	return 0;
5696 
5697 free_rx_filter:
5698 	dma_free_coherent(dev, rx_filter->size, rx_filter->va, rx_filter->dma);
5699 free_mbox:
5700 	dma_free_coherent(dev, mbox_mem_alloc->size, mbox_mem_alloc->va,
5701 			  mbox_mem_alloc->dma);
5702 	return status;
5703 }
5704 
5705 static void be_remove(struct pci_dev *pdev)
5706 {
5707 	struct be_adapter *adapter = pci_get_drvdata(pdev);
5708 
5709 	if (!adapter)
5710 		return;
5711 
5712 	be_roce_dev_remove(adapter);
5713 	be_intr_set(adapter, false);
5714 
5715 	be_cancel_err_detection(adapter);
5716 
5717 	unregister_netdev(adapter->netdev);
5718 
5719 	be_clear(adapter);
5720 
5721 	if (!pci_vfs_assigned(adapter->pdev))
5722 		be_cmd_reset_function(adapter);
5723 
5724 	/* tell fw we're done with firing cmds */
5725 	be_cmd_fw_clean(adapter);
5726 
5727 	be_unmap_pci_bars(adapter);
5728 	be_drv_cleanup(adapter);
5729 
5730 	pci_disable_pcie_error_reporting(pdev);
5731 
5732 	pci_release_regions(pdev);
5733 	pci_disable_device(pdev);
5734 
5735 	free_netdev(adapter->netdev);
5736 }
5737 
5738 static ssize_t be_hwmon_show_temp(struct device *dev,
5739 				  struct device_attribute *dev_attr,
5740 				  char *buf)
5741 {
5742 	struct be_adapter *adapter = dev_get_drvdata(dev);
5743 
5744 	/* Unit: millidegree Celsius */
5745 	if (adapter->hwmon_info.be_on_die_temp == BE_INVALID_DIE_TEMP)
5746 		return -EIO;
5747 	else
5748 		return sprintf(buf, "%u\n",
5749 			       adapter->hwmon_info.be_on_die_temp * 1000);
5750 }
5751 
5752 static SENSOR_DEVICE_ATTR(temp1_input, 0444,
5753 			  be_hwmon_show_temp, NULL, 1);
5754 
5755 static struct attribute *be_hwmon_attrs[] = {
5756 	&sensor_dev_attr_temp1_input.dev_attr.attr,
5757 	NULL
5758 };
5759 
5760 ATTRIBUTE_GROUPS(be_hwmon);
5761 
5762 static char *mc_name(struct be_adapter *adapter)
5763 {
5764 	char *str = "";	/* default */
5765 
5766 	switch (adapter->mc_type) {
5767 	case UMC:
5768 		str = "UMC";
5769 		break;
5770 	case FLEX10:
5771 		str = "FLEX10";
5772 		break;
5773 	case vNIC1:
5774 		str = "vNIC-1";
5775 		break;
5776 	case nPAR:
5777 		str = "nPAR";
5778 		break;
5779 	case UFP:
5780 		str = "UFP";
5781 		break;
5782 	case vNIC2:
5783 		str = "vNIC-2";
5784 		break;
5785 	default:
5786 		str = "";
5787 	}
5788 
5789 	return str;
5790 }
5791 
5792 static inline char *func_name(struct be_adapter *adapter)
5793 {
5794 	return be_physfn(adapter) ? "PF" : "VF";
5795 }
5796 
5797 static inline char *nic_name(struct pci_dev *pdev)
5798 {
5799 	switch (pdev->device) {
5800 	case OC_DEVICE_ID1:
5801 		return OC_NAME;
5802 	case OC_DEVICE_ID2:
5803 		return OC_NAME_BE;
5804 	case OC_DEVICE_ID3:
5805 	case OC_DEVICE_ID4:
5806 		return OC_NAME_LANCER;
5807 	case BE_DEVICE_ID2:
5808 		return BE3_NAME;
5809 	case OC_DEVICE_ID5:
5810 	case OC_DEVICE_ID6:
5811 		return OC_NAME_SH;
5812 	default:
5813 		return BE_NAME;
5814 	}
5815 }
5816 
5817 static int be_probe(struct pci_dev *pdev, const struct pci_device_id *pdev_id)
5818 {
5819 	struct be_adapter *adapter;
5820 	struct net_device *netdev;
5821 	int status = 0;
5822 
5823 	status = pci_enable_device(pdev);
5824 	if (status)
5825 		goto do_none;
5826 
5827 	status = pci_request_regions(pdev, DRV_NAME);
5828 	if (status)
5829 		goto disable_dev;
5830 	pci_set_master(pdev);
5831 
5832 	netdev = alloc_etherdev_mqs(sizeof(*adapter), MAX_TX_QS, MAX_RX_QS);
5833 	if (!netdev) {
5834 		status = -ENOMEM;
5835 		goto rel_reg;
5836 	}
5837 	adapter = netdev_priv(netdev);
5838 	adapter->pdev = pdev;
5839 	pci_set_drvdata(pdev, adapter);
5840 	adapter->netdev = netdev;
5841 	SET_NETDEV_DEV(netdev, &pdev->dev);
5842 
5843 	status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
5844 	if (status) {
5845 		dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
5846 		goto free_netdev;
5847 	}
5848 
5849 	status = pci_enable_pcie_error_reporting(pdev);
5850 	if (!status)
5851 		dev_info(&pdev->dev, "PCIe error reporting enabled\n");
5852 
5853 	status = be_map_pci_bars(adapter);
5854 	if (status)
5855 		goto free_netdev;
5856 
5857 	status = be_drv_init(adapter);
5858 	if (status)
5859 		goto unmap_bars;
5860 
5861 	status = be_setup(adapter);
5862 	if (status)
5863 		goto drv_cleanup;
5864 
5865 	be_netdev_init(netdev);
5866 	status = register_netdev(netdev);
5867 	if (status != 0)
5868 		goto unsetup;
5869 
5870 	be_roce_dev_add(adapter);
5871 
5872 	be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5873 	adapter->error_recovery.probe_time = jiffies;
5874 
5875 	/* On Die temperature not supported for VF. */
5876 	if (be_physfn(adapter) && IS_ENABLED(CONFIG_BE2NET_HWMON)) {
5877 		adapter->hwmon_info.hwmon_dev =
5878 			devm_hwmon_device_register_with_groups(&pdev->dev,
5879 							       DRV_NAME,
5880 							       adapter,
5881 							       be_hwmon_groups);
5882 		adapter->hwmon_info.be_on_die_temp = BE_INVALID_DIE_TEMP;
5883 	}
5884 
5885 	dev_info(&pdev->dev, "%s: %s %s port %c\n", nic_name(pdev),
5886 		 func_name(adapter), mc_name(adapter), adapter->port_name);
5887 
5888 	return 0;
5889 
5890 unsetup:
5891 	be_clear(adapter);
5892 drv_cleanup:
5893 	be_drv_cleanup(adapter);
5894 unmap_bars:
5895 	be_unmap_pci_bars(adapter);
5896 free_netdev:
5897 	pci_disable_pcie_error_reporting(pdev);
5898 	free_netdev(netdev);
5899 rel_reg:
5900 	pci_release_regions(pdev);
5901 disable_dev:
5902 	pci_disable_device(pdev);
5903 do_none:
5904 	dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
5905 	return status;
5906 }
5907 
5908 static int __maybe_unused be_suspend(struct device *dev_d)
5909 {
5910 	struct be_adapter *adapter = dev_get_drvdata(dev_d);
5911 
5912 	be_intr_set(adapter, false);
5913 	be_cancel_err_detection(adapter);
5914 
5915 	be_cleanup(adapter);
5916 
5917 	return 0;
5918 }
5919 
5920 static int __maybe_unused be_pci_resume(struct device *dev_d)
5921 {
5922 	struct be_adapter *adapter = dev_get_drvdata(dev_d);
5923 	int status = 0;
5924 
5925 	status = be_resume(adapter);
5926 	if (status)
5927 		return status;
5928 
5929 	be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
5930 
5931 	return 0;
5932 }
5933 
5934 /*
5935  * An FLR will stop BE from DMAing any data.
5936  */
5937 static void be_shutdown(struct pci_dev *pdev)
5938 {
5939 	struct be_adapter *adapter = pci_get_drvdata(pdev);
5940 
5941 	if (!adapter)
5942 		return;
5943 
5944 	be_roce_dev_shutdown(adapter);
5945 	cancel_delayed_work_sync(&adapter->work);
5946 	be_cancel_err_detection(adapter);
5947 
5948 	netif_device_detach(adapter->netdev);
5949 
5950 	be_cmd_reset_function(adapter);
5951 
5952 	pci_disable_device(pdev);
5953 }
5954 
5955 static pci_ers_result_t be_eeh_err_detected(struct pci_dev *pdev,
5956 					    pci_channel_state_t state)
5957 {
5958 	struct be_adapter *adapter = pci_get_drvdata(pdev);
5959 
5960 	dev_err(&adapter->pdev->dev, "EEH error detected\n");
5961 
5962 	be_roce_dev_remove(adapter);
5963 
5964 	if (!be_check_error(adapter, BE_ERROR_EEH)) {
5965 		be_set_error(adapter, BE_ERROR_EEH);
5966 
5967 		be_cancel_err_detection(adapter);
5968 
5969 		be_cleanup(adapter);
5970 	}
5971 
5972 	if (state == pci_channel_io_perm_failure)
5973 		return PCI_ERS_RESULT_DISCONNECT;
5974 
5975 	pci_disable_device(pdev);
5976 
5977 	/* The error could cause the FW to trigger a flash debug dump.
5978 	 * Resetting the card while flash dump is in progress
5979 	 * can cause it not to recover; wait for it to finish.
5980 	 * Wait only for first function as it is needed only once per
5981 	 * adapter.
5982 	 */
5983 	if (pdev->devfn == 0)
5984 		ssleep(30);
5985 
5986 	return PCI_ERS_RESULT_NEED_RESET;
5987 }
5988 
5989 static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev)
5990 {
5991 	struct be_adapter *adapter = pci_get_drvdata(pdev);
5992 	int status;
5993 
5994 	dev_info(&adapter->pdev->dev, "EEH reset\n");
5995 
5996 	status = pci_enable_device(pdev);
5997 	if (status)
5998 		return PCI_ERS_RESULT_DISCONNECT;
5999 
6000 	pci_set_master(pdev);
6001 	pci_restore_state(pdev);
6002 
6003 	/* Check if card is ok and fw is ready */
6004 	dev_info(&adapter->pdev->dev,
6005 		 "Waiting for FW to be ready after EEH reset\n");
6006 	status = be_fw_wait_ready(adapter);
6007 	if (status)
6008 		return PCI_ERS_RESULT_DISCONNECT;
6009 
6010 	be_clear_error(adapter, BE_CLEAR_ALL);
6011 	return PCI_ERS_RESULT_RECOVERED;
6012 }
6013 
6014 static void be_eeh_resume(struct pci_dev *pdev)
6015 {
6016 	int status = 0;
6017 	struct be_adapter *adapter = pci_get_drvdata(pdev);
6018 
6019 	dev_info(&adapter->pdev->dev, "EEH resume\n");
6020 
6021 	pci_save_state(pdev);
6022 
6023 	status = be_resume(adapter);
6024 	if (status)
6025 		goto err;
6026 
6027 	be_roce_dev_add(adapter);
6028 
6029 	be_schedule_err_detection(adapter, ERR_DETECTION_DELAY);
6030 	return;
6031 err:
6032 	dev_err(&adapter->pdev->dev, "EEH resume failed\n");
6033 }
6034 
6035 static int be_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
6036 {
6037 	struct be_adapter *adapter = pci_get_drvdata(pdev);
6038 	struct be_resources vft_res = {0};
6039 	int status;
6040 
6041 	if (!num_vfs)
6042 		be_vf_clear(adapter);
6043 
6044 	adapter->num_vfs = num_vfs;
6045 
6046 	if (adapter->num_vfs == 0 && pci_vfs_assigned(pdev)) {
6047 		dev_warn(&pdev->dev,
6048 			 "Cannot disable VFs while they are assigned\n");
6049 		return -EBUSY;
6050 	}
6051 
6052 	/* When the HW is in SRIOV capable configuration, the PF-pool resources
6053 	 * are equally distributed across the max-number of VFs. The user may
6054 	 * request only a subset of the max-vfs to be enabled.
6055 	 * Based on num_vfs, redistribute the resources across num_vfs so that
6056 	 * each VF will have access to more number of resources.
6057 	 * This facility is not available in BE3 FW.
6058 	 * Also, this is done by FW in Lancer chip.
6059 	 */
6060 	if (skyhawk_chip(adapter) && !pci_num_vf(pdev)) {
6061 		be_calculate_vf_res(adapter, adapter->num_vfs,
6062 				    &vft_res);
6063 		status = be_cmd_set_sriov_config(adapter, adapter->pool_res,
6064 						 adapter->num_vfs, &vft_res);
6065 		if (status)
6066 			dev_err(&pdev->dev,
6067 				"Failed to optimize SR-IOV resources\n");
6068 	}
6069 
6070 	status = be_get_resources(adapter);
6071 	if (status)
6072 		return be_cmd_status(status);
6073 
6074 	/* Updating real_num_tx/rx_queues() requires rtnl_lock() */
6075 	rtnl_lock();
6076 	status = be_update_queues(adapter);
6077 	rtnl_unlock();
6078 	if (status)
6079 		return be_cmd_status(status);
6080 
6081 	if (adapter->num_vfs)
6082 		status = be_vf_setup(adapter);
6083 
6084 	if (!status)
6085 		return adapter->num_vfs;
6086 
6087 	return 0;
6088 }
6089 
6090 static const struct pci_error_handlers be_eeh_handlers = {
6091 	.error_detected = be_eeh_err_detected,
6092 	.slot_reset = be_eeh_reset,
6093 	.resume = be_eeh_resume,
6094 };
6095 
6096 static SIMPLE_DEV_PM_OPS(be_pci_pm_ops, be_suspend, be_pci_resume);
6097 
6098 static struct pci_driver be_driver = {
6099 	.name = DRV_NAME,
6100 	.id_table = be_dev_ids,
6101 	.probe = be_probe,
6102 	.remove = be_remove,
6103 	.driver.pm = &be_pci_pm_ops,
6104 	.shutdown = be_shutdown,
6105 	.sriov_configure = be_pci_sriov_configure,
6106 	.err_handler = &be_eeh_handlers
6107 };
6108 
6109 static int __init be_init_module(void)
6110 {
6111 	int status;
6112 
6113 	if (rx_frag_size != 8192 && rx_frag_size != 4096 &&
6114 	    rx_frag_size != 2048) {
6115 		printk(KERN_WARNING DRV_NAME
6116 			" : Module param rx_frag_size must be 2048/4096/8192."
6117 			" Using 2048\n");
6118 		rx_frag_size = 2048;
6119 	}
6120 
6121 	if (num_vfs > 0) {
6122 		pr_info(DRV_NAME " : Module param num_vfs is obsolete.");
6123 		pr_info(DRV_NAME " : Use sysfs method to enable VFs\n");
6124 	}
6125 
6126 	be_wq = create_singlethread_workqueue("be_wq");
6127 	if (!be_wq) {
6128 		pr_warn(DRV_NAME "workqueue creation failed\n");
6129 		return -1;
6130 	}
6131 
6132 	be_err_recovery_workq =
6133 		create_singlethread_workqueue("be_err_recover");
6134 	if (!be_err_recovery_workq)
6135 		pr_warn(DRV_NAME "Could not create error recovery workqueue\n");
6136 
6137 	status = pci_register_driver(&be_driver);
6138 	if (status) {
6139 		destroy_workqueue(be_wq);
6140 		be_destroy_err_recovery_workq();
6141 	}
6142 	return status;
6143 }
6144 module_init(be_init_module);
6145 
6146 static void __exit be_exit_module(void)
6147 {
6148 	pci_unregister_driver(&be_driver);
6149 
6150 	be_destroy_err_recovery_workq();
6151 
6152 	if (be_wq)
6153 		destroy_workqueue(be_wq);
6154 }
6155 module_exit(be_exit_module);
6156