xref: /dpdk/drivers/net/ngbe/base/ngbe_vf.c (revision e0c29b2f6568a71372b0a0a0ee5bcaa54ec98a1b)
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2018-2025 Beijing WangXun Technology Co., Ltd.
3  * Copyright(c) 2010-2017 Intel Corporation
4  */
5 
6 #include "ngbe_type.h"
7 #include "ngbe_mbx.h"
8 #include "ngbe_vf.h"
9 
10 /* ngbe_virt_clr_reg - Set register to default (power on) state.
11  * @hw: pointer to hardware structure
12  */
13 static void ngbe_virt_clr_reg(struct ngbe_hw *hw)
14 {
15 	u32 vfsrrctl;
16 
17 	/* default values (BUF_SIZE = 2048, HDR_SIZE = 256) */
18 	vfsrrctl = NGBE_RXCFG_HDRLEN(NGBE_RX_HDR_SIZE);
19 	vfsrrctl |= NGBE_RXCFG_PKTLEN(NGBE_RX_BUF_SIZE);
20 
21 	wr32m(hw, NGBE_RXCFG(0),
22 		(NGBE_RXCFG_HDRLEN_MASK | NGBE_RXCFG_PKTLEN_MASK),
23 		vfsrrctl);
24 
25 
26 	ngbe_flush(hw);
27 }
28 
29 /**
30  *  ngbe_start_hw_vf - Prepare hardware for Tx/Rx
31  *  @hw: pointer to hardware structure
32  *
33  *  Starts the hardware by filling the bus info structure and media type, clears
34  *  all on chip counters, initializes receive address registers, multicast
35  *  table, VLAN filter table, calls routine to set up link and flow control
36  *  settings, and leaves transmit and receive units disabled and uninitialized
37  **/
38 s32 ngbe_start_hw_vf(struct ngbe_hw *hw)
39 {
40 	/* Clear adapter stopped flag */
41 	hw->adapter_stopped = false;
42 
43 	return 0;
44 }
45 
46 /**
47  *  ngbe_init_hw_vf - virtual function hardware initialization
48  *  @hw: pointer to hardware structure
49  *
50  *  Initialize the hardware by resetting the hardware and then starting
51  *  the hardware
52  **/
53 s32 ngbe_init_hw_vf(struct ngbe_hw *hw)
54 {
55 	s32 status = hw->mac.start_hw(hw);
56 
57 	hw->mac.get_mac_addr(hw, hw->mac.addr);
58 
59 	return status;
60 }
61 
62 /**
63  *  ngbe_reset_hw_vf - Performs hardware reset
64  *  @hw: pointer to hardware structure
65  *
66  *  Resets the hardware by resetting the transmit and receive units, masks and
67  *  clears all interrupts.
68  **/
69 s32 ngbe_reset_hw_vf(struct ngbe_hw *hw)
70 {
71 	struct ngbe_mbx_info *mbx = &hw->mbx;
72 	u32 timeout = NGBE_VF_INIT_TIMEOUT;
73 	s32 ret_val = NGBE_ERR_INVALID_MAC_ADDR;
74 	u32 msgbuf[NGBE_VF_PERMADDR_MSG_LEN];
75 	u8 *addr = (u8 *)(&msgbuf[1]);
76 
77 	/* Call adapter stop to disable tx/rx and clear interrupts */
78 	hw->mac.stop_hw(hw);
79 
80 	/* reset the api version */
81 	hw->api_version = ngbe_mbox_api_10;
82 
83 	/* backup msix vectors */
84 	mbx->timeout = NGBE_VF_MBX_INIT_TIMEOUT;
85 	msgbuf[0] = NGBE_VF_BACKUP;
86 	mbx->write_posted(hw, msgbuf, 1, 0);
87 	msec_delay(10);
88 
89 	DEBUGOUT("Issuing a function level reset to MAC");
90 	wr32(hw, NGBE_VFRST, NGBE_VFRST_SET);
91 	ngbe_flush(hw);
92 	msec_delay(50);
93 
94 	hw->offset_loaded = 1;
95 
96 	/* we cannot reset while the RSTI / RSTD bits are asserted */
97 	while (!mbx->check_for_rst(hw, 0) && timeout) {
98 		timeout--;
99 		usec_delay(5);
100 	}
101 
102 	if (!timeout)
103 		return NGBE_ERR_RESET_FAILED;
104 
105 	/* Reset VF registers to initial values */
106 	ngbe_virt_clr_reg(hw);
107 
108 	/* mailbox timeout can now become active */
109 	mbx->timeout = NGBE_VF_MBX_INIT_TIMEOUT;
110 
111 	msgbuf[0] = NGBE_VF_RESET;
112 	mbx->write_posted(hw, msgbuf, 1, 0);
113 
114 	msec_delay(10);
115 
116 	/*
117 	 * set our "perm_addr" based on info provided by PF
118 	 * also set up the mc_filter_type which is piggy backed
119 	 * on the mac address in word 3
120 	 */
121 	ret_val = mbx->read_posted(hw, msgbuf,
122 			NGBE_VF_PERMADDR_MSG_LEN, 0);
123 	if (ret_val)
124 		return ret_val;
125 
126 	if (msgbuf[0] != (NGBE_VF_RESET | NGBE_VT_MSGTYPE_ACK) &&
127 	    msgbuf[0] != (NGBE_VF_RESET | NGBE_VT_MSGTYPE_NACK))
128 		return NGBE_ERR_INVALID_MAC_ADDR;
129 
130 	if (msgbuf[0] == (NGBE_VF_RESET | NGBE_VT_MSGTYPE_ACK))
131 		memcpy(hw->mac.perm_addr, addr, ETH_ADDR_LEN);
132 
133 	hw->mac.mc_filter_type = msgbuf[NGBE_VF_MC_TYPE_WORD];
134 
135 	return ret_val;
136 }
137 
138 /**
139  *  ngbe_stop_hw_vf - Generic stop Tx/Rx units
140  *  @hw: pointer to hardware structure
141  *
142  *  Sets the adapter_stopped flag within ngbe_hw struct. Clears interrupts,
143  *  disables transmit and receive units. The adapter_stopped flag is used by
144  *  the shared code and drivers to determine if the adapter is in a stopped
145  *  state and should not touch the hardware.
146  **/
147 s32 ngbe_stop_hw_vf(struct ngbe_hw *hw)
148 {
149 	u16 i;
150 
151 	/*
152 	 * Set the adapter_stopped flag so other driver functions stop touching
153 	 * the hardware
154 	 */
155 	hw->adapter_stopped = true;
156 
157 	/* Clear interrupt mask to stop from interrupts being generated */
158 	wr32(hw, NGBE_VFIMC, NGBE_VFIMC_MASK);
159 
160 	/* Clear any pending interrupts, flush previous writes */
161 	wr32(hw, NGBE_VFICR, NGBE_VFICR_MASK);
162 
163 	/* Disable the transmit unit.  Each queue must be disabled. */
164 	for (i = 0; i < hw->mac.max_tx_queues; i++)
165 		wr32(hw, NGBE_TXCFG(i), NGBE_TXCFG_FLUSH);
166 
167 	/* Disable the receive unit by stopping each queue */
168 	for (i = 0; i < hw->mac.max_rx_queues; i++)
169 		wr32m(hw, NGBE_RXCFG(i), NGBE_RXCFG_ENA, 0);
170 
171 	/* Clear packet split and pool config */
172 	wr32(hw, NGBE_VFPLCFG, 0);
173 	hw->rx_loaded = 1;
174 
175 	/* flush all queues disables */
176 	ngbe_flush(hw);
177 	msec_delay(2);
178 
179 	return 0;
180 }
181 
182 /**
183  *  ngbe_mta_vector - Determines bit-vector in multicast table to set
184  *  @hw: pointer to hardware structure
185  *  @mc_addr: the multicast address
186  **/
187 STATIC s32 ngbe_mta_vector(struct ngbe_hw *hw, u8 *mc_addr)
188 {
189 	u32 vector = 0;
190 
191 	switch (hw->mac.mc_filter_type) {
192 	case 0:   /* use bits [47:36] of the address */
193 		vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
194 		break;
195 	case 1:   /* use bits [46:35] of the address */
196 		vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
197 		break;
198 	case 2:   /* use bits [45:34] of the address */
199 		vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
200 		break;
201 	case 3:   /* use bits [43:32] of the address */
202 		vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
203 		break;
204 	default:  /* Invalid mc_filter_type */
205 		DEBUGOUT("MC filter type param set incorrectly");
206 		ASSERT(0);
207 		break;
208 	}
209 
210 	/* vector can only be 12-bits or boundary will be exceeded */
211 	vector &= 0xFFF;
212 	return vector;
213 }
214 
215 STATIC s32 ngbevf_write_msg_read_ack(struct ngbe_hw *hw, u32 *msg,
216 				      u32 *retmsg, u16 size)
217 {
218 	struct ngbe_mbx_info *mbx = &hw->mbx;
219 	s32 retval = mbx->write_posted(hw, msg, size, 0);
220 
221 	if (retval)
222 		return retval;
223 
224 	return mbx->read_posted(hw, retmsg, size, 0);
225 }
226 
227 /**
228  *  ngbe_set_rar_vf - set device MAC address
229  *  @hw: pointer to hardware structure
230  *  @index: Receive address register to write
231  *  @addr: Address to put into receive address register
232  *  @vmdq: VMDq "set" or "pool" index
233  *  @enable_addr: set flag that address is active
234  **/
235 s32 ngbe_set_rar_vf(struct ngbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
236 		     u32 enable_addr)
237 {
238 	u32 msgbuf[3];
239 	u8 *msg_addr = (u8 *)(&msgbuf[1]);
240 	s32 ret_val;
241 
242 	UNREFERENCED_PARAMETER(vmdq, enable_addr, index);
243 
244 	memset(msgbuf, 0, 12);
245 	msgbuf[0] = NGBE_VF_SET_MAC_ADDR;
246 	memcpy(msg_addr, addr, 6);
247 	ret_val = ngbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 3);
248 
249 	msgbuf[0] &= ~NGBE_VT_MSGTYPE_CTS;
250 
251 	/* if nacked the address was rejected, use "perm_addr" */
252 	if (!ret_val &&
253 	    (msgbuf[0] == (NGBE_VF_SET_MAC_ADDR | NGBE_VT_MSGTYPE_NACK))) {
254 		ngbe_get_mac_addr_vf(hw, hw->mac.addr);
255 		return NGBE_ERR_MBX;
256 	}
257 
258 	return ret_val;
259 }
260 
261 /**
262  *  ngbe_update_mc_addr_list_vf - Update Multicast addresses
263  *  @hw: pointer to the HW structure
264  *  @mc_addr_list: array of multicast addresses to program
265  *  @mc_addr_count: number of multicast addresses to program
266  *  @next: caller supplied function to return next address in list
267  *  @clear: unused
268  *
269  *  Updates the Multicast Table Array.
270  **/
271 s32 ngbe_update_mc_addr_list_vf(struct ngbe_hw *hw, u8 *mc_addr_list,
272 				 u32 mc_addr_count, ngbe_mc_addr_itr next,
273 				 bool clear)
274 {
275 	struct ngbe_mbx_info *mbx = &hw->mbx;
276 	u32 msgbuf[NGBE_P2VMBX_SIZE];
277 	u16 *vector_list = (u16 *)&msgbuf[1];
278 	u32 vector;
279 	u32 cnt, i;
280 	u32 vmdq;
281 
282 	UNREFERENCED_PARAMETER(clear);
283 
284 	/* Each entry in the list uses 1 16 bit word.  We have 30
285 	 * 16 bit words available in our HW msg buffer (minus 1 for the
286 	 * msg type).  That's 30 hash values if we pack 'em right.  If
287 	 * there are more than 30 MC addresses to add then punt the
288 	 * extras for now and then add code to handle more than 30 later.
289 	 * It would be unusual for a server to request that many multi-cast
290 	 * addresses except for in large enterprise network environments.
291 	 */
292 
293 	DEBUGOUT("MC Addr Count = %d", mc_addr_count);
294 
295 	cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
296 	msgbuf[0] = NGBE_VF_SET_MULTICAST;
297 	msgbuf[0] |= cnt << NGBE_VT_MSGINFO_SHIFT;
298 
299 	for (i = 0; i < cnt; i++) {
300 		vector = ngbe_mta_vector(hw, next(hw, &mc_addr_list, &vmdq));
301 		DEBUGOUT("Hash value = 0x%03X", vector);
302 		vector_list[i] = (u16)vector;
303 	}
304 
305 	return mbx->write_posted(hw, msgbuf, NGBE_P2VMBX_SIZE, 0);
306 }
307 
308 /**
309  *  ngbevf_update_xcast_mode - Update Multicast mode
310  *  @hw: pointer to the HW structure
311  *  @xcast_mode: new multicast mode
312  *
313  *  Updates the Multicast Mode of VF.
314  **/
315 s32 ngbevf_update_xcast_mode(struct ngbe_hw *hw, int xcast_mode)
316 {
317 	u32 msgbuf[2];
318 	s32 err;
319 
320 	switch (hw->api_version) {
321 	case ngbe_mbox_api_12:
322 		/* New modes were introduced in 1.3 version */
323 		if (xcast_mode > NGBEVF_XCAST_MODE_ALLMULTI)
324 			return NGBE_ERR_FEATURE_NOT_SUPPORTED;
325 		/* Fall through */
326 	case ngbe_mbox_api_13:
327 		break;
328 	default:
329 		return NGBE_ERR_FEATURE_NOT_SUPPORTED;
330 	}
331 
332 	msgbuf[0] = NGBE_VF_UPDATE_XCAST_MODE;
333 	msgbuf[1] = xcast_mode;
334 
335 	err = ngbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
336 	if (err)
337 		return err;
338 
339 	msgbuf[0] &= ~NGBE_VT_MSGTYPE_CTS;
340 	if (msgbuf[0] == (NGBE_VF_UPDATE_XCAST_MODE | NGBE_VT_MSGTYPE_NACK))
341 		return NGBE_ERR_FEATURE_NOT_SUPPORTED;
342 	return 0;
343 }
344 
345 /**
346  *  ngbe_set_vfta_vf - Set/Unset vlan filter table address
347  *  @hw: pointer to the HW structure
348  *  @vlan: 12 bit VLAN ID
349  *  @vind: unused by VF drivers
350  *  @vlan_on: if true then set bit, else clear bit
351  *  @vlvf_bypass: boolean flag indicating updating default pool is okay
352  *
353  *  Turn on/off specified VLAN in the VLAN filter table.
354  **/
355 s32 ngbe_set_vfta_vf(struct ngbe_hw *hw, u32 vlan, u32 vind,
356 		      bool vlan_on, bool vlvf_bypass)
357 {
358 	u32 msgbuf[2];
359 	s32 ret_val;
360 
361 	UNREFERENCED_PARAMETER(vind, vlvf_bypass);
362 
363 	msgbuf[0] = NGBE_VF_SET_VLAN;
364 	msgbuf[1] = vlan;
365 	/* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
366 	msgbuf[0] |= vlan_on << NGBE_VT_MSGINFO_SHIFT;
367 
368 	ret_val = ngbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
369 	if (!ret_val && (msgbuf[0] & NGBE_VT_MSGTYPE_ACK))
370 		return 0;
371 
372 	return ret_val | (msgbuf[0] & NGBE_VT_MSGTYPE_NACK);
373 }
374 
375 /**
376  * ngbe_get_mac_addr_vf - Read device MAC address
377  * @hw: pointer to the HW structure
378  * @mac_addr: the MAC address
379  **/
380 s32 ngbe_get_mac_addr_vf(struct ngbe_hw *hw, u8 *mac_addr)
381 {
382 	int i;
383 
384 	for (i = 0; i < ETH_ADDR_LEN; i++)
385 		mac_addr[i] = hw->mac.perm_addr[i];
386 
387 	return 0;
388 }
389 
390 s32 ngbevf_set_uc_addr_vf(struct ngbe_hw *hw, u32 index, u8 *addr)
391 {
392 	u32 msgbuf[3], msgbuf_chk;
393 	u8 *msg_addr = (u8 *)(&msgbuf[1]);
394 	s32 ret_val;
395 
396 	memset(msgbuf, 0, sizeof(msgbuf));
397 	/*
398 	 * If index is one then this is the start of a new list and needs
399 	 * indication to the PF so it can do it's own list management.
400 	 * If it is zero then that tells the PF to just clear all of
401 	 * this VF's macvlans and there is no new list.
402 	 */
403 	msgbuf[0] |= index << NGBE_VT_MSGINFO_SHIFT;
404 	msgbuf[0] |= NGBE_VF_SET_MACVLAN;
405 	msgbuf_chk = msgbuf[0];
406 	if (addr)
407 		memcpy(msg_addr, addr, 6);
408 
409 	ret_val = ngbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 3);
410 	if (!ret_val) {
411 		msgbuf[0] &= ~NGBE_VT_MSGTYPE_CTS;
412 
413 		if (msgbuf[0] == (msgbuf_chk | NGBE_VT_MSGTYPE_NACK))
414 			return NGBE_ERR_OUT_OF_MEM;
415 	}
416 
417 	return ret_val;
418 }
419 
420 /**
421  *  ngbe_check_mac_link_vf - Get link/speed status
422  *  @hw: pointer to hardware structure
423  *  @speed: pointer to link speed
424  *  @link_up: true is link is up, false otherwise
425  *  @autoneg_wait_to_complete: true when waiting for completion is needed
426  *
427  *  Reads the links register to determine if link is up and the current speed
428  **/
429 s32 ngbe_check_mac_link_vf(struct ngbe_hw *hw, u32 *speed,
430 			    bool *link_up, bool wait_to_complete)
431 {
432 	/**
433 	 * for a quick link status checking, wait_to_compelet == 0,
434 	 * skip PF link status checking
435 	 */
436 	bool no_pflink_check = 0;
437 	struct ngbe_mbx_info *mbx = &hw->mbx;
438 	struct ngbe_mac_info *mac = &hw->mac;
439 	s32 ret_val = 0;
440 	u32 links_reg;
441 	u32 in_msg = 0;
442 
443 	UNREFERENCED_PARAMETER(wait_to_complete);
444 
445 	/* If we were hit with a reset drop the link */
446 	if (!mbx->check_for_rst(hw, 0) || !mbx->timeout)
447 		mac->get_link_status = true;
448 
449 	if (!mac->get_link_status)
450 		goto out;
451 
452 	/* if link status is down no point in checking to see if pf is up */
453 	links_reg = rd32(hw, NGBE_VFSTATUS);
454 	if (!(links_reg & NGBE_VFSTATUS_BW_MASK))
455 		goto out;
456 
457 	/* for SFP+ modules and DA cables it can take up to 500usecs
458 	 * before the link status is correct
459 	 */
460 	if (mac->type == ngbe_mac_em_vf) {
461 		if (po32m(hw, NGBE_VFSTATUS, NGBE_VFSTATUS_BW_MASK,
462 			0, NULL, 5, 100))
463 			goto out;
464 	}
465 
466 	if (links_reg & NGBE_VFSTATUS_BW_1G)
467 		*speed = NGBE_LINK_SPEED_1GB_FULL;
468 	else if (links_reg & NGBE_VFSTATUS_BW_100M)
469 		*speed = NGBE_LINK_SPEED_100M_FULL;
470 	else if (links_reg & NGBE_VFSTATUS_BW_10M)
471 		*speed = NGBE_LINK_SPEED_10M_FULL;
472 	else
473 		*speed = NGBE_LINK_SPEED_UNKNOWN;
474 
475 	if (no_pflink_check) {
476 		if (*speed == NGBE_LINK_SPEED_UNKNOWN)
477 			mac->get_link_status = true;
478 		else
479 			mac->get_link_status = false;
480 
481 		goto out;
482 	}
483 
484 	/* if the read failed it could just be a mailbox collision, best wait
485 	 * until we are called again and don't report an error
486 	 */
487 	if (mbx->read(hw, &in_msg, 1, 0))
488 		goto out;
489 
490 	if (!(in_msg & NGBE_VT_MSGTYPE_CTS)) {
491 		/* msg is not CTS and is NACK we must have lost CTS status */
492 		if (in_msg & NGBE_VT_MSGTYPE_NACK)
493 			ret_val = -1;
494 		goto out;
495 	}
496 
497 	/* the pf is talking, if we timed out in the past we reinit */
498 	if (!mbx->timeout) {
499 		ret_val = -1;
500 		goto out;
501 	}
502 
503 	/* if we passed all the tests above then the link is up and we no
504 	 * longer need to check for link
505 	 */
506 	mac->get_link_status = false;
507 
508 out:
509 	*link_up = !mac->get_link_status;
510 	return ret_val;
511 }
512 
513 /**
514  *  ngbevf_rlpml_set_vf - Set the maximum receive packet length
515  *  @hw: pointer to the HW structure
516  *  @max_size: value to assign to max frame size
517  **/
518 s32 ngbevf_rlpml_set_vf(struct ngbe_hw *hw, u16 max_size)
519 {
520 	u32 msgbuf[2];
521 	s32 retval;
522 
523 	msgbuf[0] = NGBE_VF_SET_LPE;
524 	msgbuf[1] = max_size;
525 
526 	retval = ngbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
527 	if (retval)
528 		return retval;
529 	if ((msgbuf[0] & NGBE_VF_SET_LPE) &&
530 	    (msgbuf[0] & NGBE_VT_MSGTYPE_NACK))
531 		return NGBE_ERR_MBX;
532 
533 	return 0;
534 }
535 
536 /**
537  *  ngbevf_negotiate_api_version - Negotiate supported API version
538  *  @hw: pointer to the HW structure
539  *  @api: integer containing requested API version
540  **/
541 int ngbevf_negotiate_api_version(struct ngbe_hw *hw, int api)
542 {
543 	int err;
544 	u32 msg[3];
545 
546 	/* Negotiate the mailbox API version */
547 	msg[0] = NGBE_VF_API_NEGOTIATE;
548 	msg[1] = api;
549 	msg[2] = 0;
550 
551 	err = ngbevf_write_msg_read_ack(hw, msg, msg, 3);
552 	if (!err) {
553 		msg[0] &= ~NGBE_VT_MSGTYPE_CTS;
554 
555 		/* Store value and return 0 on success */
556 		if (msg[0] == (NGBE_VF_API_NEGOTIATE | NGBE_VT_MSGTYPE_ACK)) {
557 			hw->api_version = api;
558 			return 0;
559 		}
560 
561 		err = NGBE_ERR_INVALID_ARGUMENT;
562 	}
563 
564 	return err;
565 }
566 
567 int ngbevf_get_queues(struct ngbe_hw *hw, unsigned int *num_tcs,
568 		       unsigned int *default_tc)
569 {
570 	int err, i;
571 	u32 msg[5];
572 
573 	/* do nothing if API doesn't support ngbevf_get_queues */
574 	switch (hw->api_version) {
575 	case ngbe_mbox_api_11:
576 	case ngbe_mbox_api_12:
577 	case ngbe_mbox_api_13:
578 		break;
579 	default:
580 		return 0;
581 	}
582 
583 	/* Fetch queue configuration from the PF */
584 	msg[0] = NGBE_VF_GET_QUEUES;
585 	for (i = 1; i < 5; i++)
586 		msg[i] = 0;
587 
588 	err = ngbevf_write_msg_read_ack(hw, msg, msg, 5);
589 	if (!err) {
590 		msg[0] &= ~NGBE_VT_MSGTYPE_CTS;
591 
592 		/*
593 		 * if we didn't get an ACK there must have been
594 		 * some sort of mailbox error so we should treat it
595 		 * as such
596 		 */
597 		if (msg[0] != (NGBE_VF_GET_QUEUES | NGBE_VT_MSGTYPE_ACK))
598 			return NGBE_ERR_MBX;
599 
600 		/* record and validate values from message */
601 		hw->mac.max_tx_queues = msg[NGBE_VF_TX_QUEUES];
602 		if (hw->mac.max_tx_queues == 0 ||
603 		    hw->mac.max_tx_queues > NGBE_VF_MAX_TX_QUEUES)
604 			hw->mac.max_tx_queues = NGBE_VF_MAX_TX_QUEUES;
605 
606 		hw->mac.max_rx_queues = msg[NGBE_VF_RX_QUEUES];
607 		if (hw->mac.max_rx_queues == 0 ||
608 		    hw->mac.max_rx_queues > NGBE_VF_MAX_RX_QUEUES)
609 			hw->mac.max_rx_queues = NGBE_VF_MAX_RX_QUEUES;
610 
611 		*num_tcs = msg[NGBE_VF_TRANS_VLAN];
612 		/* in case of unknown state assume we cannot tag frames */
613 		if (*num_tcs > hw->mac.max_rx_queues)
614 			*num_tcs = 1;
615 
616 		*default_tc = msg[NGBE_VF_DEF_QUEUE];
617 		/* default to queue 0 on out-of-bounds queue number */
618 		if (*default_tc >= hw->mac.max_tx_queues)
619 			*default_tc = 0;
620 	}
621 
622 	return err;
623 }
624 
625 /**
626  *  ngbe_init_ops_vf - Initialize the pointers for vf
627  *  @hw: pointer to hardware structure
628  *
629  *  This will assign function pointers, adapter-specific functions can
630  *  override the assignment of generic function pointers by assigning
631  *  their own adapter-specific function pointers.
632  *  Does not touch the hardware.
633  **/
634 s32 ngbe_init_ops_vf(struct ngbe_hw *hw)
635 {
636 	struct ngbe_mac_info *mac = &hw->mac;
637 	struct ngbe_mbx_info *mbx = &hw->mbx;
638 
639 	/* MAC */
640 	mac->init_hw = ngbe_init_hw_vf;
641 	mac->reset_hw = ngbe_reset_hw_vf;
642 	mac->start_hw = ngbe_start_hw_vf;
643 	mac->stop_hw = ngbe_stop_hw_vf;
644 	mac->get_mac_addr = ngbe_get_mac_addr_vf;
645 	mac->negotiate_api_version = ngbevf_negotiate_api_version;
646 
647 	/* Link */
648 	mac->check_link = ngbe_check_mac_link_vf;
649 
650 	/* RAR, Multicast, VLAN */
651 	mac->set_rar = ngbe_set_rar_vf;
652 	mac->set_uc_addr = ngbevf_set_uc_addr_vf;
653 	mac->update_mc_addr_list = ngbe_update_mc_addr_list_vf;
654 	mac->update_xcast_mode = ngbevf_update_xcast_mode;
655 	mac->set_vfta = ngbe_set_vfta_vf;
656 	mac->set_rlpml = ngbevf_rlpml_set_vf;
657 
658 	mac->max_tx_queues = 1;
659 	mac->max_rx_queues = 1;
660 
661 	mbx->init_params = ngbe_init_mbx_params_vf;
662 	mbx->read = ngbe_read_mbx_vf;
663 	mbx->write = ngbe_write_mbx_vf;
664 	mbx->read_posted = ngbe_read_posted_mbx;
665 	mbx->write_posted = ngbe_write_posted_mbx;
666 	mbx->check_for_msg = ngbe_check_for_msg_vf;
667 	mbx->check_for_ack = ngbe_check_for_ack_vf;
668 	mbx->check_for_rst = ngbe_check_for_rst_vf;
669 
670 	return 0;
671 }
672