1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2001-2018
7 #include "ixgbe_type.h"
10 #ifndef IXGBE_VFWRITE_REG
11 #define IXGBE_VFWRITE_REG IXGBE_WRITE_REG
13 #ifndef IXGBE_VFREAD_REG
14 #define IXGBE_VFREAD_REG IXGBE_READ_REG
18 * ixgbe_init_ops_vf - Initialize the pointers for vf
19 * @hw: pointer to hardware structure
21 * This will assign function pointers, adapter-specific functions can
22 * override the assignment of generic function pointers by assigning
23 * their own adapter-specific function pointers.
24 * Does not touch the hardware.
26 s32 ixgbe_init_ops_vf(struct ixgbe_hw *hw)
29 hw->mac.ops.init_hw = ixgbe_init_hw_vf;
30 hw->mac.ops.reset_hw = ixgbe_reset_hw_vf;
31 hw->mac.ops.start_hw = ixgbe_start_hw_vf;
32 /* Cannot clear stats on VF */
33 hw->mac.ops.clear_hw_cntrs = NULL;
34 hw->mac.ops.get_media_type = NULL;
35 hw->mac.ops.get_mac_addr = ixgbe_get_mac_addr_vf;
36 hw->mac.ops.stop_adapter = ixgbe_stop_adapter_vf;
37 hw->mac.ops.get_bus_info = NULL;
38 hw->mac.ops.negotiate_api_version = ixgbevf_negotiate_api_version;
41 hw->mac.ops.setup_link = ixgbe_setup_mac_link_vf;
42 hw->mac.ops.check_link = ixgbe_check_mac_link_vf;
43 hw->mac.ops.get_link_capabilities = NULL;
45 /* RAR, Multicast, VLAN */
46 hw->mac.ops.set_rar = ixgbe_set_rar_vf;
47 hw->mac.ops.set_uc_addr = ixgbevf_set_uc_addr_vf;
48 hw->mac.ops.init_rx_addrs = NULL;
49 hw->mac.ops.update_mc_addr_list = ixgbe_update_mc_addr_list_vf;
50 hw->mac.ops.update_xcast_mode = ixgbevf_update_xcast_mode;
51 hw->mac.ops.enable_mc = NULL;
52 hw->mac.ops.disable_mc = NULL;
53 hw->mac.ops.clear_vfta = NULL;
54 hw->mac.ops.set_vfta = ixgbe_set_vfta_vf;
55 hw->mac.ops.set_rlpml = ixgbevf_rlpml_set_vf;
57 hw->mac.max_tx_queues = 1;
58 hw->mac.max_rx_queues = 1;
60 hw->mbx.ops.init_params = ixgbe_init_mbx_params_vf;
65 /* ixgbe_virt_clr_reg - Set register to default (power on) state.
66 * @hw: pointer to hardware structure
68 static void ixgbe_virt_clr_reg(struct ixgbe_hw *hw)
75 /* VRSRRCTL default values (BSIZEPACKET = 2048, BSIZEHEADER = 256) */
76 vfsrrctl = 0x100 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
77 vfsrrctl |= 0x800 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
79 /* DCA_RXCTRL default value */
80 vfdca_rxctrl = IXGBE_DCA_RXCTRL_DESC_RRO_EN |
81 IXGBE_DCA_RXCTRL_DATA_WRO_EN |
82 IXGBE_DCA_RXCTRL_HEAD_WRO_EN;
84 /* DCA_TXCTRL default value */
85 vfdca_txctrl = IXGBE_DCA_TXCTRL_DESC_RRO_EN |
86 IXGBE_DCA_TXCTRL_DESC_WRO_EN |
87 IXGBE_DCA_TXCTRL_DATA_RRO_EN;
89 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
91 for (i = 0; i < 7; i++) {
92 IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
93 IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
94 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), 0);
95 IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), vfsrrctl);
96 IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
97 IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
98 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), 0);
99 IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAH(i), 0);
100 IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAL(i), 0);
101 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(i), vfdca_rxctrl);
102 IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i), vfdca_txctrl);
105 IXGBE_WRITE_FLUSH(hw);
109 * ixgbe_start_hw_vf - Prepare hardware for Tx/Rx
110 * @hw: pointer to hardware structure
112 * Starts the hardware by filling the bus info structure and media type, clears
113 * all on chip counters, initializes receive address registers, multicast
114 * table, VLAN filter table, calls routine to set up link and flow control
115 * settings, and leaves transmit and receive units disabled and uninitialized
117 s32 ixgbe_start_hw_vf(struct ixgbe_hw *hw)
119 /* Clear adapter stopped flag */
120 hw->adapter_stopped = false;
122 return IXGBE_SUCCESS;
126 * ixgbe_init_hw_vf - virtual function hardware initialization
127 * @hw: pointer to hardware structure
129 * Initialize the hardware by resetting the hardware and then starting
132 s32 ixgbe_init_hw_vf(struct ixgbe_hw *hw)
134 s32 status = hw->mac.ops.start_hw(hw);
136 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
142 * ixgbe_reset_hw_vf - Performs hardware reset
143 * @hw: pointer to hardware structure
145 * Resets the hardware by reseting the transmit and receive units, masks and
146 * clears all interrupts.
148 s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
150 struct ixgbe_mbx_info *mbx = &hw->mbx;
151 u32 timeout = IXGBE_VF_INIT_TIMEOUT;
152 s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
153 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
154 u8 *addr = (u8 *)(&msgbuf[1]);
156 DEBUGFUNC("ixgbevf_reset_hw_vf");
158 /* Call adapter stop to disable tx/rx and clear interrupts */
159 hw->mac.ops.stop_adapter(hw);
161 /* reset the api version */
162 hw->api_version = ixgbe_mbox_api_10;
164 DEBUGOUT("Issuing a function level reset to MAC\n");
166 IXGBE_VFWRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
167 IXGBE_WRITE_FLUSH(hw);
171 /* we cannot reset while the RSTI / RSTD bits are asserted */
172 while (!mbx->ops.check_for_rst(hw, 0) && timeout) {
178 return IXGBE_ERR_RESET_FAILED;
180 /* Reset VF registers to initial values */
181 ixgbe_virt_clr_reg(hw);
183 /* mailbox timeout can now become active */
184 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
186 msgbuf[0] = IXGBE_VF_RESET;
187 mbx->ops.write_posted(hw, msgbuf, 1, 0);
192 * set our "perm_addr" based on info provided by PF
193 * also set up the mc_filter_type which is piggy backed
194 * on the mac address in word 3
196 ret_val = mbx->ops.read_posted(hw, msgbuf,
197 IXGBE_VF_PERMADDR_MSG_LEN, 0);
201 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) &&
202 msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
203 return IXGBE_ERR_INVALID_MAC_ADDR;
205 if (msgbuf[0] == (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK))
206 memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
208 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
214 * ixgbe_stop_adapter_vf - Generic stop Tx/Rx units
215 * @hw: pointer to hardware structure
217 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
218 * disables transmit and receive units. The adapter_stopped flag is used by
219 * the shared code and drivers to determine if the adapter is in a stopped
220 * state and should not touch the hardware.
222 s32 ixgbe_stop_adapter_vf(struct ixgbe_hw *hw)
228 * Set the adapter_stopped flag so other driver functions stop touching
231 hw->adapter_stopped = true;
233 /* Clear interrupt mask to stop from interrupts being generated */
234 IXGBE_VFWRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
236 /* Clear any pending interrupts, flush previous writes */
237 IXGBE_VFREAD_REG(hw, IXGBE_VTEICR);
239 /* Disable the transmit unit. Each queue must be disabled. */
240 for (i = 0; i < hw->mac.max_tx_queues; i++)
241 IXGBE_VFWRITE_REG(hw, IXGBE_VFTXDCTL(i), IXGBE_TXDCTL_SWFLSH);
243 /* Disable the receive unit by stopping each queue */
244 for (i = 0; i < hw->mac.max_rx_queues; i++) {
245 reg_val = IXGBE_VFREAD_REG(hw, IXGBE_VFRXDCTL(i));
246 reg_val &= ~IXGBE_RXDCTL_ENABLE;
247 IXGBE_VFWRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
249 /* Clear packet split and pool config */
250 IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
252 /* flush all queues disables */
253 IXGBE_WRITE_FLUSH(hw);
256 return IXGBE_SUCCESS;
260 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
261 * @hw: pointer to hardware structure
262 * @mc_addr: the multicast address
264 * Extracts the 12 bits, from a multicast address, to determine which
265 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
266 * incoming rx multicast addresses, to determine the bit-vector to check in
267 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
268 * by the MO field of the MCSTCTRL. The MO field is set during initialization
271 STATIC s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
275 switch (hw->mac.mc_filter_type) {
276 case 0: /* use bits [47:36] of the address */
277 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
279 case 1: /* use bits [46:35] of the address */
280 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
282 case 2: /* use bits [45:34] of the address */
283 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
285 case 3: /* use bits [43:32] of the address */
286 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
288 default: /* Invalid mc_filter_type */
289 DEBUGOUT("MC filter type param set incorrectly\n");
294 /* vector can only be 12-bits or boundary will be exceeded */
299 STATIC s32 ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw, u32 *msg,
300 u32 *retmsg, u16 size)
302 struct ixgbe_mbx_info *mbx = &hw->mbx;
303 s32 retval = mbx->ops.write_posted(hw, msg, size, 0);
308 return mbx->ops.read_posted(hw, retmsg, size, 0);
312 * ixgbe_set_rar_vf - set device MAC address
313 * @hw: pointer to hardware structure
314 * @index: Receive address register to write
315 * @addr: Address to put into receive address register
316 * @vmdq: VMDq "set" or "pool" index
317 * @enable_addr: set flag that address is active
319 s32 ixgbe_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
323 u8 *msg_addr = (u8 *)(&msgbuf[1]);
325 UNREFERENCED_3PARAMETER(vmdq, enable_addr, index);
327 memset(msgbuf, 0, 12);
328 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
329 memcpy(msg_addr, addr, 6);
330 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 3);
332 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
334 /* if nacked the address was rejected, use "perm_addr" */
336 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK))) {
337 ixgbe_get_mac_addr_vf(hw, hw->mac.addr);
338 return IXGBE_ERR_MBX;
345 * ixgbe_update_mc_addr_list_vf - Update Multicast addresses
346 * @hw: pointer to the HW structure
347 * @mc_addr_list: array of multicast addresses to program
348 * @mc_addr_count: number of multicast addresses to program
349 * @next: caller supplied function to return next address in list
352 * Updates the Multicast Table Array.
354 s32 ixgbe_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
355 u32 mc_addr_count, ixgbe_mc_addr_itr next,
358 struct ixgbe_mbx_info *mbx = &hw->mbx;
359 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
360 u16 *vector_list = (u16 *)&msgbuf[1];
365 UNREFERENCED_1PARAMETER(clear);
367 DEBUGFUNC("ixgbe_update_mc_addr_list_vf");
369 /* Each entry in the list uses 1 16 bit word. We have 30
370 * 16 bit words available in our HW msg buffer (minus 1 for the
371 * msg type). That's 30 hash values if we pack 'em right. If
372 * there are more than 30 MC addresses to add then punt the
373 * extras for now and then add code to handle more than 30 later.
374 * It would be unusual for a server to request that many multi-cast
375 * addresses except for in large enterprise network environments.
378 DEBUGOUT1("MC Addr Count = %d\n", mc_addr_count);
380 cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
381 msgbuf[0] = IXGBE_VF_SET_MULTICAST;
382 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
384 for (i = 0; i < cnt; i++) {
385 vector = ixgbe_mta_vector(hw, next(hw, &mc_addr_list, &vmdq));
386 DEBUGOUT1("Hash value = 0x%03X\n", vector);
387 vector_list[i] = (u16)vector;
390 return mbx->ops.write_posted(hw, msgbuf, IXGBE_VFMAILBOX_SIZE, 0);
394 * ixgbevf_update_xcast_mode - Update Multicast mode
395 * @hw: pointer to the HW structure
396 * @xcast_mode: new multicast mode
398 * Updates the Multicast Mode of VF.
400 s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
405 switch (hw->api_version) {
406 case ixgbe_mbox_api_12:
407 /* New modes were introduced in 1.3 version */
408 if (xcast_mode > IXGBEVF_XCAST_MODE_ALLMULTI)
409 return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
411 case ixgbe_mbox_api_13:
414 return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
417 msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE;
418 msgbuf[1] = xcast_mode;
420 err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
424 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
425 if (msgbuf[0] == (IXGBE_VF_UPDATE_XCAST_MODE | IXGBE_VT_MSGTYPE_NACK))
426 return IXGBE_ERR_FEATURE_NOT_SUPPORTED;
427 return IXGBE_SUCCESS;
431 * ixgbe_set_vfta_vf - Set/Unset vlan filter table address
432 * @hw: pointer to the HW structure
433 * @vlan: 12 bit VLAN ID
434 * @vind: unused by VF drivers
435 * @vlan_on: if true then set bit, else clear bit
436 * @vlvf_bypass: boolean flag indicating updating default pool is okay
438 * Turn on/off specified VLAN in the VLAN filter table.
440 s32 ixgbe_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
441 bool vlan_on, bool vlvf_bypass)
445 UNREFERENCED_2PARAMETER(vind, vlvf_bypass);
447 msgbuf[0] = IXGBE_VF_SET_VLAN;
449 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
450 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
452 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
453 if (!ret_val && (msgbuf[0] & IXGBE_VT_MSGTYPE_ACK))
454 return IXGBE_SUCCESS;
456 return ret_val | (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK);
460 * ixgbe_get_num_of_tx_queues_vf - Get number of TX queues
461 * @hw: pointer to hardware structure
463 * Returns the number of transmit queues for the given adapter.
465 u32 ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw *hw)
467 UNREFERENCED_1PARAMETER(hw);
468 return IXGBE_VF_MAX_TX_QUEUES;
472 * ixgbe_get_num_of_rx_queues_vf - Get number of RX queues
473 * @hw: pointer to hardware structure
475 * Returns the number of receive queues for the given adapter.
477 u32 ixgbe_get_num_of_rx_queues_vf(struct ixgbe_hw *hw)
479 UNREFERENCED_1PARAMETER(hw);
480 return IXGBE_VF_MAX_RX_QUEUES;
484 * ixgbe_get_mac_addr_vf - Read device MAC address
485 * @hw: pointer to the HW structure
486 * @mac_addr: the MAC address
488 s32 ixgbe_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
492 for (i = 0; i < IXGBE_ETH_LENGTH_OF_ADDRESS; i++)
493 mac_addr[i] = hw->mac.perm_addr[i];
495 return IXGBE_SUCCESS;
498 s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
500 u32 msgbuf[3], msgbuf_chk;
501 u8 *msg_addr = (u8 *)(&msgbuf[1]);
504 memset(msgbuf, 0, sizeof(msgbuf));
506 * If index is one then this is the start of a new list and needs
507 * indication to the PF so it can do it's own list management.
508 * If it is zero then that tells the PF to just clear all of
509 * this VF's macvlans and there is no new list.
511 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
512 msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
513 msgbuf_chk = msgbuf[0];
515 memcpy(msg_addr, addr, 6);
517 ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 3);
519 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
521 if (msgbuf[0] == (msgbuf_chk | IXGBE_VT_MSGTYPE_NACK))
522 return IXGBE_ERR_OUT_OF_MEM;
529 * ixgbe_setup_mac_link_vf - Setup MAC link settings
530 * @hw: pointer to hardware structure
531 * @speed: new link speed
532 * @autoneg_wait_to_complete: true when waiting for completion is needed
534 * Set the link speed in the AUTOC register and restarts link.
536 s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed speed,
537 bool autoneg_wait_to_complete)
539 UNREFERENCED_3PARAMETER(hw, speed, autoneg_wait_to_complete);
540 return IXGBE_SUCCESS;
544 * ixgbe_check_mac_link_vf - Get link/speed status
545 * @hw: pointer to hardware structure
546 * @speed: pointer to link speed
547 * @link_up: true is link is up, false otherwise
548 * @autoneg_wait_to_complete: true when waiting for completion is needed
550 * Reads the links register to determine if link is up and the current speed
552 s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
553 bool *link_up, bool autoneg_wait_to_complete)
555 struct ixgbe_mbx_info *mbx = &hw->mbx;
556 struct ixgbe_mac_info *mac = &hw->mac;
557 s32 ret_val = IXGBE_SUCCESS;
560 UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);
562 /* If we were hit with a reset drop the link */
563 if (!mbx->ops.check_for_rst(hw, 0) || !mbx->timeout)
564 mac->get_link_status = true;
566 if (!mac->get_link_status)
569 /* if link status is down no point in checking to see if pf is up */
570 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
571 if (!(links_reg & IXGBE_LINKS_UP))
574 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
575 * before the link status is correct
577 if (mac->type == ixgbe_mac_82599_vf) {
580 for (i = 0; i < 5; i++) {
582 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
584 if (!(links_reg & IXGBE_LINKS_UP))
589 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
590 case IXGBE_LINKS_SPEED_10G_82599:
591 *speed = IXGBE_LINK_SPEED_10GB_FULL;
592 if (hw->mac.type >= ixgbe_mac_X550) {
593 if (links_reg & IXGBE_LINKS_SPEED_NON_STD)
594 *speed = IXGBE_LINK_SPEED_2_5GB_FULL;
597 case IXGBE_LINKS_SPEED_1G_82599:
598 *speed = IXGBE_LINK_SPEED_1GB_FULL;
600 case IXGBE_LINKS_SPEED_100_82599:
601 *speed = IXGBE_LINK_SPEED_100_FULL;
602 if (hw->mac.type == ixgbe_mac_X550) {
603 if (links_reg & IXGBE_LINKS_SPEED_NON_STD)
604 *speed = IXGBE_LINK_SPEED_5GB_FULL;
607 case IXGBE_LINKS_SPEED_10_X550EM_A:
608 *speed = IXGBE_LINK_SPEED_UNKNOWN;
609 /* Since Reserved in older MAC's */
610 if (hw->mac.type >= ixgbe_mac_X550)
611 *speed = IXGBE_LINK_SPEED_10_FULL;
614 *speed = IXGBE_LINK_SPEED_UNKNOWN;
617 /* if the read failed it could just be a mailbox collision, best wait
618 * until we are called again and don't report an error
620 if (mbx->ops.read(hw, &in_msg, 1, 0))
623 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
624 /* msg is not CTS and is NACK we must have lost CTS status */
625 if (in_msg & IXGBE_VT_MSGTYPE_NACK)
630 /* the pf is talking, if we timed out in the past we reinit */
636 /* if we passed all the tests above then the link is up and we no
637 * longer need to check for link
639 mac->get_link_status = false;
642 *link_up = !mac->get_link_status;
647 * ixgbevf_rlpml_set_vf - Set the maximum receive packet length
648 * @hw: pointer to the HW structure
649 * @max_size: value to assign to max frame size
651 s32 ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
656 msgbuf[0] = IXGBE_VF_SET_LPE;
657 msgbuf[1] = max_size;
659 retval = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
662 if ((msgbuf[0] & IXGBE_VF_SET_LPE) &&
663 (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK))
664 return IXGBE_ERR_MBX;
670 * ixgbevf_negotiate_api_version - Negotiate supported API version
671 * @hw: pointer to the HW structure
672 * @api: integer containing requested API version
674 int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
679 /* Negotiate the mailbox API version */
680 msg[0] = IXGBE_VF_API_NEGOTIATE;
684 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 3);
686 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
688 /* Store value and return 0 on success */
689 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) {
690 hw->api_version = api;
694 err = IXGBE_ERR_INVALID_ARGUMENT;
700 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
701 unsigned int *default_tc)
706 /* do nothing if API doesn't support ixgbevf_get_queues */
707 switch (hw->api_version) {
708 case ixgbe_mbox_api_11:
709 case ixgbe_mbox_api_12:
710 case ixgbe_mbox_api_13:
716 /* Fetch queue configuration from the PF */
717 msg[0] = IXGBE_VF_GET_QUEUES;
718 msg[1] = msg[2] = msg[3] = msg[4] = 0;
720 err = ixgbevf_write_msg_read_ack(hw, msg, msg, 5);
722 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
725 * if we we didn't get an ACK there must have been
726 * some sort of mailbox error so we should treat it
729 if (msg[0] != (IXGBE_VF_GET_QUEUES | IXGBE_VT_MSGTYPE_ACK))
730 return IXGBE_ERR_MBX;
732 /* record and validate values from message */
733 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES];
734 if (hw->mac.max_tx_queues == 0 ||
735 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES)
736 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES;
738 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES];
739 if (hw->mac.max_rx_queues == 0 ||
740 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES)
741 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
743 *num_tcs = msg[IXGBE_VF_TRANS_VLAN];
744 /* in case of unknown state assume we cannot tag frames */
745 if (*num_tcs > hw->mac.max_rx_queues)
748 *default_tc = msg[IXGBE_VF_DEF_QUEUE];
749 /* default to queue 0 on out-of-bounds queue number */
750 if (*default_tc >= hw->mac.max_tx_queues)