1 /******************************************************************************
3 Copyright (c) 2001-2015, Intel Corporation
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
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21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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32 ******************************************************************************/
36 #include "ixgbe_api.h"
37 #include "ixgbe_type.h"
40 #ifndef IXGBE_VFWRITE_REG
41 #define IXGBE_VFWRITE_REG IXGBE_WRITE_REG
43 #ifndef IXGBE_VFREAD_REG
44 #define IXGBE_VFREAD_REG IXGBE_READ_REG
48 * ixgbe_init_ops_vf - Initialize the pointers for vf
49 * @hw: pointer to hardware structure
51 * This will assign function pointers, adapter-specific functions can
52 * override the assignment of generic function pointers by assigning
53 * their own adapter-specific function pointers.
54 * Does not touch the hardware.
56 s32 ixgbe_init_ops_vf(struct ixgbe_hw *hw)
59 hw->mac.ops.init_hw = ixgbe_init_hw_vf;
60 hw->mac.ops.reset_hw = ixgbe_reset_hw_vf;
61 hw->mac.ops.start_hw = ixgbe_start_hw_vf;
62 /* Cannot clear stats on VF */
63 hw->mac.ops.clear_hw_cntrs = NULL;
64 hw->mac.ops.get_media_type = NULL;
65 hw->mac.ops.get_mac_addr = ixgbe_get_mac_addr_vf;
66 hw->mac.ops.stop_adapter = ixgbe_stop_adapter_vf;
67 hw->mac.ops.get_bus_info = NULL;
70 hw->mac.ops.setup_link = ixgbe_setup_mac_link_vf;
71 hw->mac.ops.check_link = ixgbe_check_mac_link_vf;
72 hw->mac.ops.get_link_capabilities = NULL;
74 /* RAR, Multicast, VLAN */
75 hw->mac.ops.set_rar = ixgbe_set_rar_vf;
76 hw->mac.ops.set_uc_addr = ixgbevf_set_uc_addr_vf;
77 hw->mac.ops.init_rx_addrs = NULL;
78 hw->mac.ops.update_mc_addr_list = ixgbe_update_mc_addr_list_vf;
79 hw->mac.ops.enable_mc = NULL;
80 hw->mac.ops.disable_mc = NULL;
81 hw->mac.ops.clear_vfta = NULL;
82 hw->mac.ops.set_vfta = ixgbe_set_vfta_vf;
84 hw->mac.max_tx_queues = 1;
85 hw->mac.max_rx_queues = 1;
87 hw->mbx.ops.init_params = ixgbe_init_mbx_params_vf;
92 /* ixgbe_virt_clr_reg - Set register to default (power on) state.
93 * @hw: pointer to hardware structure
95 static void ixgbe_virt_clr_reg(struct ixgbe_hw *hw)
102 /* VRSRRCTL default values (BSIZEPACKET = 2048, BSIZEHEADER = 256) */
103 vfsrrctl = 0x100 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
104 vfsrrctl |= 0x800 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
106 /* DCA_RXCTRL default value */
107 vfdca_rxctrl = IXGBE_DCA_RXCTRL_DESC_RRO_EN |
108 IXGBE_DCA_RXCTRL_DATA_WRO_EN |
109 IXGBE_DCA_RXCTRL_HEAD_WRO_EN;
111 /* DCA_TXCTRL default value */
112 vfdca_txctrl = IXGBE_DCA_TXCTRL_DESC_RRO_EN |
113 IXGBE_DCA_TXCTRL_DESC_WRO_EN |
114 IXGBE_DCA_TXCTRL_DATA_RRO_EN;
116 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
118 for (i = 0; i < 7; i++) {
119 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
120 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
121 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), 0);
122 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), vfsrrctl);
123 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
124 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
125 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), 0);
126 IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAH(i), 0);
127 IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAL(i), 0);
128 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(i), vfdca_rxctrl);
129 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i), vfdca_txctrl);
132 IXGBE_WRITE_FLUSH(hw);
136 * ixgbe_start_hw_vf - Prepare hardware for Tx/Rx
137 * @hw: pointer to hardware structure
139 * Starts the hardware by filling the bus info structure and media type, clears
140 * all on chip counters, initializes receive address registers, multicast
141 * table, VLAN filter table, calls routine to set up link and flow control
142 * settings, and leaves transmit and receive units disabled and uninitialized
144 s32 ixgbe_start_hw_vf(struct ixgbe_hw *hw)
146 /* Clear adapter stopped flag */
147 hw->adapter_stopped = FALSE;
149 return IXGBE_SUCCESS;
153 * ixgbe_init_hw_vf - virtual function hardware initialization
154 * @hw: pointer to hardware structure
156 * Initialize the hardware by resetting the hardware and then starting
159 s32 ixgbe_init_hw_vf(struct ixgbe_hw *hw)
161 s32 status = hw->mac.ops.start_hw(hw);
163 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
169 * ixgbe_reset_hw_vf - Performs hardware reset
170 * @hw: pointer to hardware structure
172 * Resets the hardware by reseting the transmit and receive units, masks and
173 * clears all interrupts.
175 s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
177 struct ixgbe_mbx_info *mbx = &hw->mbx;
178 u32 timeout = IXGBE_VF_INIT_TIMEOUT;
179 s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
180 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
181 u8 *addr = (u8 *)(&msgbuf[1]);
183 DEBUGFUNC("ixgbevf_reset_hw_vf");
185 /* Call adapter stop to disable tx/rx and clear interrupts */
186 hw->mac.ops.stop_adapter(hw);
188 /* reset the api version */
189 hw->api_version = ixgbe_mbox_api_10;
191 DEBUGOUT("Issuing a function level reset to MAC\n");
193 IXGBE_VFWRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
194 IXGBE_WRITE_FLUSH(hw);
198 /* we cannot reset while the RSTI / RSTD bits are asserted */
199 while (!mbx->ops.check_for_rst(hw, 0) && timeout) {
205 return IXGBE_ERR_RESET_FAILED;
207 /* Reset VF registers to initial values */
208 ixgbe_virt_clr_reg(hw);
210 /* mailbox timeout can now become active */
211 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
213 msgbuf[0] = IXGBE_VF_RESET;
214 mbx->ops.write_posted(hw, msgbuf, 1, 0);
219 * set our "perm_addr" based on info provided by PF
220 * also set up the mc_filter_type which is piggy backed
221 * on the mac address in word 3
223 ret_val = mbx->ops.read_posted(hw, msgbuf,
224 IXGBE_VF_PERMADDR_MSG_LEN, 0);
228 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
230 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) &&
231 msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
232 return IXGBE_ERR_INVALID_MAC_ADDR;
234 memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
235 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
241 * ixgbe_stop_adapter_vf - Generic stop Tx/Rx units
242 * @hw: pointer to hardware structure
244 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
245 * disables transmit and receive units. The adapter_stopped flag is used by
246 * the shared code and drivers to determine if the adapter is in a stopped
247 * state and should not touch the hardware.
249 s32 ixgbe_stop_adapter_vf(struct ixgbe_hw *hw)
255 * Set the adapter_stopped flag so other driver functions stop touching
258 hw->adapter_stopped = TRUE;
260 /* Clear interrupt mask to stop from interrupts being generated */
261 IXGBE_VFWRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
263 /* Clear any pending interrupts, flush previous writes */
264 IXGBE_VFREAD_REG(hw, IXGBE_VTEICR);
266 /* Disable the transmit unit. Each queue must be disabled. */
267 for (i = 0; i < hw->mac.max_tx_queues; i++)
268 IXGBE_VFWRITE_REG(hw, IXGBE_VFTXDCTL(i), IXGBE_TXDCTL_SWFLSH);
270 /* Disable the receive unit by stopping each queue */
271 for (i = 0; i < hw->mac.max_rx_queues; i++) {
272 reg_val = IXGBE_VFREAD_REG(hw, IXGBE_VFRXDCTL(i));
273 reg_val &= ~IXGBE_RXDCTL_ENABLE;
274 IXGBE_VFWRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
276 /* Clear packet split and pool config */
277 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
279 /* flush all queues disables */
280 IXGBE_WRITE_FLUSH(hw);
283 return IXGBE_SUCCESS;
287 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
288 * @hw: pointer to hardware structure
289 * @mc_addr: the multicast address
291 * Extracts the 12 bits, from a multicast address, to determine which
292 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
293 * incoming rx multicast addresses, to determine the bit-vector to check in
294 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
295 * by the MO field of the MCSTCTRL. The MO field is set during initialization
298 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
302 switch (hw->mac.mc_filter_type) {
303 case 0: /* use bits [47:36] of the address */
304 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
306 case 1: /* use bits [46:35] of the address */
307 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
309 case 2: /* use bits [45:34] of the address */
310 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
312 case 3: /* use bits [43:32] of the address */
313 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
315 default: /* Invalid mc_filter_type */
316 DEBUGOUT("MC filter type param set incorrectly\n");
321 /* vector can only be 12-bits or boundary will be exceeded */
326 static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
329 struct ixgbe_mbx_info *mbx = &hw->mbx;
330 u32 retmsg[IXGBE_VFMAILBOX_SIZE];
331 s32 retval = mbx->ops.write_posted(hw, msg, size, 0);
334 mbx->ops.read_posted(hw, retmsg, size, 0);
338 * ixgbe_set_rar_vf - set device MAC address
339 * @hw: pointer to hardware structure
340 * @index: Receive address register to write
341 * @addr: Address to put into receive address register
342 * @vmdq: VMDq "set" or "pool" index
343 * @enable_addr: set flag that address is active
345 s32 ixgbe_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
348 struct ixgbe_mbx_info *mbx = &hw->mbx;
350 u8 *msg_addr = (u8 *)(&msgbuf[1]);
352 UNREFERENCED_3PARAMETER(vmdq, enable_addr, index);
354 memset(msgbuf, 0, 12);
355 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
356 memcpy(msg_addr, addr, 6);
357 ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
360 ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
362 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
364 /* if nacked the address was rejected, use "perm_addr" */
366 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
367 ixgbe_get_mac_addr_vf(hw, hw->mac.addr);
373 * ixgbe_update_mc_addr_list_vf - Update Multicast addresses
374 * @hw: pointer to the HW structure
375 * @mc_addr_list: array of multicast addresses to program
376 * @mc_addr_count: number of multicast addresses to program
377 * @next: caller supplied function to return next address in list
379 * Updates the Multicast Table Array.
381 s32 ixgbe_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
382 u32 mc_addr_count, ixgbe_mc_addr_itr next,
385 struct ixgbe_mbx_info *mbx = &hw->mbx;
386 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
387 u16 *vector_list = (u16 *)&msgbuf[1];
392 UNREFERENCED_1PARAMETER(clear);
394 DEBUGFUNC("ixgbe_update_mc_addr_list_vf");
396 /* Each entry in the list uses 1 16 bit word. We have 30
397 * 16 bit words available in our HW msg buffer (minus 1 for the
398 * msg type). That's 30 hash values if we pack 'em right. If
399 * there are more than 30 MC addresses to add then punt the
400 * extras for now and then add code to handle more than 30 later.
401 * It would be unusual for a server to request that many multi-cast
402 * addresses except for in large enterprise network environments.
405 DEBUGOUT1("MC Addr Count = %d\n", mc_addr_count);
407 cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
408 msgbuf[0] = IXGBE_VF_SET_MULTICAST;
409 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
411 for (i = 0; i < cnt; i++) {
412 vector = ixgbe_mta_vector(hw, next(hw, &mc_addr_list, &vmdq));
413 DEBUGOUT1("Hash value = 0x%03X\n", vector);
414 vector_list[i] = (u16)vector;
417 return mbx->ops.write_posted(hw, msgbuf, IXGBE_VFMAILBOX_SIZE, 0);
421 * ixgbe_set_vfta_vf - Set/Unset vlan filter table address
422 * @hw: pointer to the HW structure
423 * @vlan: 12 bit VLAN ID
424 * @vind: unused by VF drivers
425 * @vlan_on: if TRUE then set bit, else clear bit
427 s32 ixgbe_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on)
429 struct ixgbe_mbx_info *mbx = &hw->mbx;
432 UNREFERENCED_1PARAMETER(vind);
434 msgbuf[0] = IXGBE_VF_SET_VLAN;
436 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
437 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
439 ret_val = mbx->ops.write_posted(hw, msgbuf, 2, 0);
441 ret_val = mbx->ops.read_posted(hw, msgbuf, 1, 0);
443 if (!ret_val && (msgbuf[0] & IXGBE_VT_MSGTYPE_ACK))
444 return IXGBE_SUCCESS;
446 return ret_val | (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK);
450 * ixgbe_get_num_of_tx_queues_vf - Get number of TX queues
451 * @hw: pointer to hardware structure
453 * Returns the number of transmit queues for the given adapter.
455 u32 ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw *hw)
457 UNREFERENCED_1PARAMETER(hw);
458 return IXGBE_VF_MAX_TX_QUEUES;
462 * ixgbe_get_num_of_rx_queues_vf - Get number of RX queues
463 * @hw: pointer to hardware structure
465 * Returns the number of receive queues for the given adapter.
467 u32 ixgbe_get_num_of_rx_queues_vf(struct ixgbe_hw *hw)
469 UNREFERENCED_1PARAMETER(hw);
470 return IXGBE_VF_MAX_RX_QUEUES;
474 * ixgbe_get_mac_addr_vf - Read device MAC address
475 * @hw: pointer to the HW structure
477 s32 ixgbe_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
481 for (i = 0; i < IXGBE_ETH_LENGTH_OF_ADDRESS; i++)
482 mac_addr[i] = hw->mac.perm_addr[i];
484 return IXGBE_SUCCESS;
487 s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
489 struct ixgbe_mbx_info *mbx = &hw->mbx;
491 u8 *msg_addr = (u8 *)(&msgbuf[1]);
494 memset(msgbuf, 0, sizeof(msgbuf));
496 * If index is one then this is the start of a new list and needs
497 * indication to the PF so it can do it's own list management.
498 * If it is zero then that tells the PF to just clear all of
499 * this VF's macvlans and there is no new list.
501 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
502 msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
504 memcpy(msg_addr, addr, 6);
505 ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
508 ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
510 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
513 if (msgbuf[0] == (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
514 ret_val = IXGBE_ERR_OUT_OF_MEM;
520 * ixgbe_setup_mac_link_vf - Setup MAC link settings
521 * @hw: pointer to hardware structure
522 * @speed: new link speed
523 * @autoneg: TRUE if autonegotiation enabled
524 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
526 * Set the link speed in the AUTOC register and restarts link.
528 s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed speed,
529 bool autoneg_wait_to_complete)
531 UNREFERENCED_3PARAMETER(hw, speed, autoneg_wait_to_complete);
532 return IXGBE_SUCCESS;
536 * ixgbe_check_mac_link_vf - Get link/speed status
537 * @hw: pointer to hardware structure
538 * @speed: pointer to link speed
539 * @link_up: TRUE is link is up, FALSE otherwise
540 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
542 * Reads the links register to determine if link is up and the current speed
544 s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
545 bool *link_up, bool autoneg_wait_to_complete)
547 struct ixgbe_mbx_info *mbx = &hw->mbx;
548 struct ixgbe_mac_info *mac = &hw->mac;
549 s32 ret_val = IXGBE_SUCCESS;
552 UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);
554 /* If we were hit with a reset drop the link */
555 if (!mbx->ops.check_for_rst(hw, 0) || !mbx->timeout)
556 mac->get_link_status = TRUE;
558 if (!mac->get_link_status)
561 /* if link status is down no point in checking to see if pf is up */
562 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
563 if (!(links_reg & IXGBE_LINKS_UP))
566 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
567 * before the link status is correct
569 if (mac->type == ixgbe_mac_82599_vf) {
572 for (i = 0; i < 5; i++) {
574 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
576 if (!(links_reg & IXGBE_LINKS_UP))
581 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
582 case IXGBE_LINKS_SPEED_10G_82599:
583 *speed = IXGBE_LINK_SPEED_10GB_FULL;
585 case IXGBE_LINKS_SPEED_1G_82599:
586 *speed = IXGBE_LINK_SPEED_1GB_FULL;
588 case IXGBE_LINKS_SPEED_100_82599:
589 *speed = IXGBE_LINK_SPEED_100_FULL;
593 /* if the read failed it could just be a mailbox collision, best wait
594 * until we are called again and don't report an error
596 if (mbx->ops.read(hw, &in_msg, 1, 0))
599 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
600 /* msg is not CTS and is NACK we must have lost CTS status */
601 if (in_msg & IXGBE_VT_MSGTYPE_NACK)
606 /* the pf is talking, if we timed out in the past we reinit */
612 /* if we passed all the tests above then the link is up and we no
613 * longer need to check for link
615 mac->get_link_status = FALSE;
618 *link_up = !mac->get_link_status;
623 * ixgbevf_rlpml_set_vf - Set the maximum receive packet length
624 * @hw: pointer to the HW structure
625 * @max_size: value to assign to max frame size
627 void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
631 msgbuf[0] = IXGBE_VF_SET_LPE;
632 msgbuf[1] = max_size;
633 ixgbevf_write_msg_read_ack(hw, msgbuf, 2);
637 * ixgbevf_negotiate_api_version - Negotiate supported API version
638 * @hw: pointer to the HW structure
639 * @api: integer containing requested API version
641 int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
646 /* Negotiate the mailbox API version */
647 msg[0] = IXGBE_VF_API_NEGOTIATE;
650 err = hw->mbx.ops.write_posted(hw, msg, 3, 0);
653 err = hw->mbx.ops.read_posted(hw, msg, 3, 0);
656 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
658 /* Store value and return 0 on success */
659 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) {
660 hw->api_version = api;
664 err = IXGBE_ERR_INVALID_ARGUMENT;
670 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
671 unsigned int *default_tc)
676 /* do nothing if API doesn't support ixgbevf_get_queues */
677 switch (hw->api_version) {
678 case ixgbe_mbox_api_11:
684 /* Fetch queue configuration from the PF */
685 msg[0] = IXGBE_VF_GET_QUEUES;
686 msg[1] = msg[2] = msg[3] = msg[4] = 0;
687 err = hw->mbx.ops.write_posted(hw, msg, 5, 0);
690 err = hw->mbx.ops.read_posted(hw, msg, 5, 0);
693 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
696 * if we we didn't get an ACK there must have been
697 * some sort of mailbox error so we should treat it
700 if (msg[0] != (IXGBE_VF_GET_QUEUES | IXGBE_VT_MSGTYPE_ACK))
701 return IXGBE_ERR_MBX;
703 /* record and validate values from message */
704 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES];
705 if (hw->mac.max_tx_queues == 0 ||
706 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES)
707 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES;
709 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES];
710 if (hw->mac.max_rx_queues == 0 ||
711 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES)
712 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
714 *num_tcs = msg[IXGBE_VF_TRANS_VLAN];
715 /* in case of unknown state assume we cannot tag frames */
716 if (*num_tcs > hw->mac.max_rx_queues)
719 *default_tc = msg[IXGBE_VF_DEF_QUEUE];
720 /* default to queue 0 on out-of-bounds queue number */
721 if (*default_tc >= hw->mac.max_tx_queues)