1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 2015 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, see <http://www.gnu.org/licenses/>.
18 The full GNU General Public License is included in this distribution in
19 the file called "COPYING".
22 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *******************************************************************************/
31 * ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
32 * @hw: pointer to hardware structure
34 * Starts the hardware by filling the bus info structure and media type, clears
35 * all on chip counters, initializes receive address registers, multicast
36 * table, VLAN filter table, calls routine to set up link and flow control
37 * settings, and leaves transmit and receive units disabled and uninitialized
39 static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw)
41 /* Clear adapter stopped flag */
42 hw->adapter_stopped = false;
48 * ixgbevf_init_hw_vf - virtual function hardware initialization
49 * @hw: pointer to hardware structure
51 * Initialize the hardware by resetting the hardware and then starting
54 static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw)
56 s32 status = hw->mac.ops.start_hw(hw);
58 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
64 * ixgbevf_reset_hw_vf - Performs hardware reset
65 * @hw: pointer to hardware structure
67 * Resets the hardware by resetting the transmit and receive units, masks and
68 * clears all interrupts.
70 static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
72 struct ixgbe_mbx_info *mbx = &hw->mbx;
73 u32 timeout = IXGBE_VF_INIT_TIMEOUT;
74 s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
75 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
76 u8 *addr = (u8 *)(&msgbuf[1]);
78 /* Call adapter stop to disable tx/rx and clear interrupts */
79 hw->mac.ops.stop_adapter(hw);
81 /* reset the api version */
82 hw->api_version = ixgbe_mbox_api_10;
84 IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
85 IXGBE_WRITE_FLUSH(hw);
87 /* we cannot reset while the RSTI / RSTD bits are asserted */
88 while (!mbx->ops.check_for_rst(hw) && timeout) {
94 return IXGBE_ERR_RESET_FAILED;
96 /* mailbox timeout can now become active */
97 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
99 msgbuf[0] = IXGBE_VF_RESET;
100 mbx->ops.write_posted(hw, msgbuf, 1);
104 /* set our "perm_addr" based on info provided by PF
105 * also set up the mc_filter_type which is piggy backed
106 * on the mac address in word 3
108 ret_val = mbx->ops.read_posted(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN);
112 /* New versions of the PF may NACK the reset return message
113 * to indicate that no MAC address has yet been assigned for
116 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) &&
117 msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
118 return IXGBE_ERR_INVALID_MAC_ADDR;
120 ether_addr_copy(hw->mac.perm_addr, addr);
121 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
127 * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
128 * @hw: pointer to hardware structure
130 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
131 * disables transmit and receive units. The adapter_stopped flag is used by
132 * the shared code and drivers to determine if the adapter is in a stopped
133 * state and should not touch the hardware.
135 static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw)
137 u32 number_of_queues;
141 /* Set the adapter_stopped flag so other driver functions stop touching
144 hw->adapter_stopped = true;
146 /* Disable the receive unit by stopped each queue */
147 number_of_queues = hw->mac.max_rx_queues;
148 for (i = 0; i < number_of_queues; i++) {
149 reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
150 if (reg_val & IXGBE_RXDCTL_ENABLE) {
151 reg_val &= ~IXGBE_RXDCTL_ENABLE;
152 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
156 IXGBE_WRITE_FLUSH(hw);
158 /* Clear interrupt mask to stop from interrupts being generated */
159 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
161 /* Clear any pending interrupts */
162 IXGBE_READ_REG(hw, IXGBE_VTEICR);
164 /* Disable the transmit unit. Each queue must be disabled. */
165 number_of_queues = hw->mac.max_tx_queues;
166 for (i = 0; i < number_of_queues; i++) {
167 reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
168 if (reg_val & IXGBE_TXDCTL_ENABLE) {
169 reg_val &= ~IXGBE_TXDCTL_ENABLE;
170 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val);
178 * ixgbevf_mta_vector - Determines bit-vector in multicast table to set
179 * @hw: pointer to hardware structure
180 * @mc_addr: the multicast address
182 * Extracts the 12 bits, from a multicast address, to determine which
183 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
184 * incoming Rx multicast addresses, to determine the bit-vector to check in
185 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
186 * by the MO field of the MCSTCTRL. The MO field is set during initialization
189 static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
193 switch (hw->mac.mc_filter_type) {
194 case 0: /* use bits [47:36] of the address */
195 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
197 case 1: /* use bits [46:35] of the address */
198 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
200 case 2: /* use bits [45:34] of the address */
201 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
203 case 3: /* use bits [43:32] of the address */
204 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
206 default: /* Invalid mc_filter_type */
210 /* vector can only be 12-bits or boundary will be exceeded */
216 * ixgbevf_get_mac_addr_vf - Read device MAC address
217 * @hw: pointer to the HW structure
218 * @mac_addr: pointer to storage for retrieved MAC address
220 static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
222 ether_addr_copy(mac_addr, hw->mac.perm_addr);
227 static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
229 struct ixgbe_mbx_info *mbx = &hw->mbx;
231 u8 *msg_addr = (u8 *)(&msgbuf[1]);
234 memset(msgbuf, 0, sizeof(msgbuf));
235 /* If index is one then this is the start of a new list and needs
236 * indication to the PF so it can do it's own list management.
237 * If it is zero then that tells the PF to just clear all of
238 * this VF's macvlans and there is no new list.
240 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
241 msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
243 ether_addr_copy(msg_addr, addr);
244 ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
247 ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
249 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
253 (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
260 * ixgbevf_set_rar_vf - set device MAC address
261 * @hw: pointer to hardware structure
262 * @index: Receive address register to write
263 * @addr: Address to put into receive address register
264 * @vmdq: Unused in this implementation
266 static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
269 struct ixgbe_mbx_info *mbx = &hw->mbx;
271 u8 *msg_addr = (u8 *)(&msgbuf[1]);
274 memset(msgbuf, 0, sizeof(msgbuf));
275 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
276 ether_addr_copy(msg_addr, addr);
277 ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
280 ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
282 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
284 /* if nacked the address was rejected, use "perm_addr" */
286 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
287 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr);
292 static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
295 struct ixgbe_mbx_info *mbx = &hw->mbx;
296 u32 retmsg[IXGBE_VFMAILBOX_SIZE];
297 s32 retval = mbx->ops.write_posted(hw, msg, size);
300 mbx->ops.read_posted(hw, retmsg, size);
304 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses
305 * @hw: pointer to the HW structure
306 * @netdev: pointer to net device structure
308 * Updates the Multicast Table Array.
310 static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
311 struct net_device *netdev)
313 struct netdev_hw_addr *ha;
314 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
315 u16 *vector_list = (u16 *)&msgbuf[1];
318 /* Each entry in the list uses 1 16 bit word. We have 30
319 * 16 bit words available in our HW msg buffer (minus 1 for the
320 * msg type). That's 30 hash values if we pack 'em right. If
321 * there are more than 30 MC addresses to add then punt the
322 * extras for now and then add code to handle more than 30 later.
323 * It would be unusual for a server to request that many multi-cast
324 * addresses except for in large enterprise network environments.
327 cnt = netdev_mc_count(netdev);
330 msgbuf[0] = IXGBE_VF_SET_MULTICAST;
331 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
334 netdev_for_each_mc_addr(ha, netdev) {
337 if (is_link_local_ether_addr(ha->addr))
340 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr);
343 ixgbevf_write_msg_read_ack(hw, msgbuf, IXGBE_VFMAILBOX_SIZE);
349 * ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address
350 * @hw: pointer to the HW structure
351 * @vlan: 12 bit VLAN ID
352 * @vind: unused by VF drivers
353 * @vlan_on: if true then set bit, else clear bit
355 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
358 struct ixgbe_mbx_info *mbx = &hw->mbx;
362 msgbuf[0] = IXGBE_VF_SET_VLAN;
364 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
365 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
367 err = mbx->ops.write_posted(hw, msgbuf, 2);
371 err = mbx->ops.read_posted(hw, msgbuf, 2);
375 /* remove extra bits from the message */
376 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
377 msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT);
379 if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_ACK))
380 err = IXGBE_ERR_INVALID_ARGUMENT;
387 * ixgbevf_setup_mac_link_vf - Setup MAC link settings
388 * @hw: pointer to hardware structure
389 * @speed: Unused in this implementation
390 * @autoneg: Unused in this implementation
391 * @autoneg_wait_to_complete: Unused in this implementation
393 * Do nothing and return success. VF drivers are not allowed to change
394 * global settings. Maintained for driver compatibility.
396 static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw,
397 ixgbe_link_speed speed, bool autoneg,
398 bool autoneg_wait_to_complete)
404 * ixgbevf_check_mac_link_vf - Get link/speed status
405 * @hw: pointer to hardware structure
406 * @speed: pointer to link speed
407 * @link_up: true is link is up, false otherwise
408 * @autoneg_wait_to_complete: true when waiting for completion is needed
410 * Reads the links register to determine if link is up and the current speed
412 static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw,
413 ixgbe_link_speed *speed,
415 bool autoneg_wait_to_complete)
417 struct ixgbe_mbx_info *mbx = &hw->mbx;
418 struct ixgbe_mac_info *mac = &hw->mac;
423 /* If we were hit with a reset drop the link */
424 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
425 mac->get_link_status = true;
427 if (!mac->get_link_status)
430 /* if link status is down no point in checking to see if pf is up */
431 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
432 if (!(links_reg & IXGBE_LINKS_UP))
435 /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
436 * before the link status is correct
438 if (mac->type == ixgbe_mac_82599_vf) {
441 for (i = 0; i < 5; i++) {
443 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
445 if (!(links_reg & IXGBE_LINKS_UP))
450 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
451 case IXGBE_LINKS_SPEED_10G_82599:
452 *speed = IXGBE_LINK_SPEED_10GB_FULL;
454 case IXGBE_LINKS_SPEED_1G_82599:
455 *speed = IXGBE_LINK_SPEED_1GB_FULL;
457 case IXGBE_LINKS_SPEED_100_82599:
458 *speed = IXGBE_LINK_SPEED_100_FULL;
462 /* if the read failed it could just be a mailbox collision, best wait
463 * until we are called again and don't report an error
465 if (mbx->ops.read(hw, &in_msg, 1))
468 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
469 /* msg is not CTS and is NACK we must have lost CTS status */
470 if (in_msg & IXGBE_VT_MSGTYPE_NACK)
475 /* the pf is talking, if we timed out in the past we reinit */
481 /* if we passed all the tests above then the link is up and we no
482 * longer need to check for link
484 mac->get_link_status = false;
487 *link_up = !mac->get_link_status;
492 * ixgbevf_rlpml_set_vf - Set the maximum receive packet length
493 * @hw: pointer to the HW structure
494 * @max_size: value to assign to max frame size
496 void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
500 msgbuf[0] = IXGBE_VF_SET_LPE;
501 msgbuf[1] = max_size;
502 ixgbevf_write_msg_read_ack(hw, msgbuf, 2);
506 * ixgbevf_negotiate_api_version - Negotiate supported API version
507 * @hw: pointer to the HW structure
508 * @api: integer containing requested API version
510 int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
515 /* Negotiate the mailbox API version */
516 msg[0] = IXGBE_VF_API_NEGOTIATE;
519 err = hw->mbx.ops.write_posted(hw, msg, 3);
522 err = hw->mbx.ops.read_posted(hw, msg, 3);
525 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
527 /* Store value and return 0 on success */
528 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) {
529 hw->api_version = api;
533 err = IXGBE_ERR_INVALID_ARGUMENT;
539 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
540 unsigned int *default_tc)
545 /* do nothing if API doesn't support ixgbevf_get_queues */
546 switch (hw->api_version) {
547 case ixgbe_mbox_api_11:
553 /* Fetch queue configuration from the PF */
554 msg[0] = IXGBE_VF_GET_QUEUE;
555 msg[1] = msg[2] = msg[3] = msg[4] = 0;
556 err = hw->mbx.ops.write_posted(hw, msg, 5);
559 err = hw->mbx.ops.read_posted(hw, msg, 5);
562 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
564 /* if we we didn't get an ACK there must have been
565 * some sort of mailbox error so we should treat it
568 if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK))
569 return IXGBE_ERR_MBX;
571 /* record and validate values from message */
572 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES];
573 if (hw->mac.max_tx_queues == 0 ||
574 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES)
575 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES;
577 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES];
578 if (hw->mac.max_rx_queues == 0 ||
579 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES)
580 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
582 *num_tcs = msg[IXGBE_VF_TRANS_VLAN];
583 /* in case of unknown state assume we cannot tag frames */
584 if (*num_tcs > hw->mac.max_rx_queues)
587 *default_tc = msg[IXGBE_VF_DEF_QUEUE];
588 /* default to queue 0 on out-of-bounds queue number */
589 if (*default_tc >= hw->mac.max_tx_queues)
596 static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
597 .init_hw = ixgbevf_init_hw_vf,
598 .reset_hw = ixgbevf_reset_hw_vf,
599 .start_hw = ixgbevf_start_hw_vf,
600 .get_mac_addr = ixgbevf_get_mac_addr_vf,
601 .stop_adapter = ixgbevf_stop_hw_vf,
602 .setup_link = ixgbevf_setup_mac_link_vf,
603 .check_link = ixgbevf_check_mac_link_vf,
604 .set_rar = ixgbevf_set_rar_vf,
605 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf,
606 .set_uc_addr = ixgbevf_set_uc_addr_vf,
607 .set_vfta = ixgbevf_set_vfta_vf,
610 const struct ixgbevf_info ixgbevf_82599_vf_info = {
611 .mac = ixgbe_mac_82599_vf,
612 .mac_ops = &ixgbevf_mac_ops,
615 const struct ixgbevf_info ixgbevf_X540_vf_info = {
616 .mac = ixgbe_mac_X540_vf,
617 .mac_ops = &ixgbevf_mac_ops,
620 const struct ixgbevf_info ixgbevf_X550_vf_info = {
621 .mac = ixgbe_mac_X550_vf,
622 .mac_ops = &ixgbevf_mac_ops,
625 const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = {
626 .mac = ixgbe_mac_X550EM_x_vf,
627 .mac_ops = &ixgbevf_mac_ops,