1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 2012 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, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
32 * ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
33 * @hw: pointer to hardware structure
35 * Starts the hardware by filling the bus info structure and media type, clears
36 * all on chip counters, initializes receive address registers, multicast
37 * table, VLAN filter table, calls routine to set up link and flow control
38 * settings, and leaves transmit and receive units disabled and uninitialized
40 static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw)
42 /* Clear adapter stopped flag */
43 hw->adapter_stopped = false;
49 * ixgbevf_init_hw_vf - virtual function hardware initialization
50 * @hw: pointer to hardware structure
52 * Initialize the hardware by resetting the hardware and then starting
55 static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw)
57 s32 status = hw->mac.ops.start_hw(hw);
59 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
65 * ixgbevf_reset_hw_vf - Performs hardware reset
66 * @hw: pointer to hardware structure
68 * Resets the hardware by reseting the transmit and receive units, masks and
69 * clears all interrupts.
71 static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
73 struct ixgbe_mbx_info *mbx = &hw->mbx;
74 u32 timeout = IXGBE_VF_INIT_TIMEOUT;
75 s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
76 u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
77 u8 *addr = (u8 *)(&msgbuf[1]);
79 /* Call adapter stop to disable tx/rx and clear interrupts */
80 hw->mac.ops.stop_adapter(hw);
82 /* reset the api version */
83 hw->api_version = ixgbe_mbox_api_10;
85 IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
86 IXGBE_WRITE_FLUSH(hw);
88 /* we cannot reset while the RSTI / RSTD bits are asserted */
89 while (!mbx->ops.check_for_rst(hw) && timeout) {
95 return IXGBE_ERR_RESET_FAILED;
97 /* mailbox timeout can now become active */
98 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
100 msgbuf[0] = IXGBE_VF_RESET;
101 mbx->ops.write_posted(hw, msgbuf, 1);
105 /* set our "perm_addr" based on info provided by PF */
106 /* also set up the mc_filter_type which is piggy backed
107 * on the mac address in word 3 */
108 ret_val = mbx->ops.read_posted(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN);
112 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK))
113 return IXGBE_ERR_INVALID_MAC_ADDR;
115 memcpy(hw->mac.perm_addr, addr, ETH_ALEN);
116 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
122 * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
123 * @hw: pointer to hardware structure
125 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
126 * disables transmit and receive units. The adapter_stopped flag is used by
127 * the shared code and drivers to determine if the adapter is in a stopped
128 * state and should not touch the hardware.
130 static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw)
132 u32 number_of_queues;
137 * Set the adapter_stopped flag so other driver functions stop touching
140 hw->adapter_stopped = true;
142 /* Disable the receive unit by stopped each queue */
143 number_of_queues = hw->mac.max_rx_queues;
144 for (i = 0; i < number_of_queues; i++) {
145 reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
146 if (reg_val & IXGBE_RXDCTL_ENABLE) {
147 reg_val &= ~IXGBE_RXDCTL_ENABLE;
148 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
152 IXGBE_WRITE_FLUSH(hw);
154 /* Clear interrupt mask to stop from interrupts being generated */
155 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
157 /* Clear any pending interrupts */
158 IXGBE_READ_REG(hw, IXGBE_VTEICR);
160 /* Disable the transmit unit. Each queue must be disabled. */
161 number_of_queues = hw->mac.max_tx_queues;
162 for (i = 0; i < number_of_queues; i++) {
163 reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
164 if (reg_val & IXGBE_TXDCTL_ENABLE) {
165 reg_val &= ~IXGBE_TXDCTL_ENABLE;
166 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val);
174 * ixgbevf_mta_vector - Determines bit-vector in multicast table to set
175 * @hw: pointer to hardware structure
176 * @mc_addr: the multicast address
178 * Extracts the 12 bits, from a multicast address, to determine which
179 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
180 * incoming rx multicast addresses, to determine the bit-vector to check in
181 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
182 * by the MO field of the MCSTCTRL. The MO field is set during initialization
185 static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
189 switch (hw->mac.mc_filter_type) {
190 case 0: /* use bits [47:36] of the address */
191 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
193 case 1: /* use bits [46:35] of the address */
194 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
196 case 2: /* use bits [45:34] of the address */
197 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
199 case 3: /* use bits [43:32] of the address */
200 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
202 default: /* Invalid mc_filter_type */
206 /* vector can only be 12-bits or boundary will be exceeded */
212 * ixgbevf_get_mac_addr_vf - Read device MAC address
213 * @hw: pointer to the HW structure
214 * @mac_addr: pointer to storage for retrieved MAC address
216 static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
218 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
223 static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
225 struct ixgbe_mbx_info *mbx = &hw->mbx;
227 u8 *msg_addr = (u8 *)(&msgbuf[1]);
230 memset(msgbuf, 0, sizeof(msgbuf));
232 * If index is one then this is the start of a new list and needs
233 * indication to the PF so it can do it's own list management.
234 * If it is zero then that tells the PF to just clear all of
235 * this VF's macvlans and there is no new list.
237 msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
238 msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
240 memcpy(msg_addr, addr, 6);
241 ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
244 ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
246 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
250 (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
257 * ixgbevf_set_rar_vf - set device MAC address
258 * @hw: pointer to hardware structure
259 * @index: Receive address register to write
260 * @addr: Address to put into receive address register
261 * @vmdq: Unused in this implementation
263 static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
266 struct ixgbe_mbx_info *mbx = &hw->mbx;
268 u8 *msg_addr = (u8 *)(&msgbuf[1]);
271 memset(msgbuf, 0, sizeof(msgbuf));
272 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
273 memcpy(msg_addr, addr, 6);
274 ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
277 ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
279 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
281 /* if nacked the address was rejected, use "perm_addr" */
283 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
284 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr);
289 static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
292 struct ixgbe_mbx_info *mbx = &hw->mbx;
293 u32 retmsg[IXGBE_VFMAILBOX_SIZE];
294 s32 retval = mbx->ops.write_posted(hw, msg, size);
297 mbx->ops.read_posted(hw, retmsg, size);
301 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses
302 * @hw: pointer to the HW structure
303 * @netdev: pointer to net device structure
305 * Updates the Multicast Table Array.
307 static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
308 struct net_device *netdev)
310 struct netdev_hw_addr *ha;
311 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
312 u16 *vector_list = (u16 *)&msgbuf[1];
315 /* Each entry in the list uses 1 16 bit word. We have 30
316 * 16 bit words available in our HW msg buffer (minus 1 for the
317 * msg type). That's 30 hash values if we pack 'em right. If
318 * there are more than 30 MC addresses to add then punt the
319 * extras for now and then add code to handle more than 30 later.
320 * It would be unusual for a server to request that many multi-cast
321 * addresses except for in large enterprise network environments.
324 cnt = netdev_mc_count(netdev);
327 msgbuf[0] = IXGBE_VF_SET_MULTICAST;
328 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
331 netdev_for_each_mc_addr(ha, netdev) {
334 if (is_link_local_ether_addr(ha->addr))
337 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr);
340 ixgbevf_write_msg_read_ack(hw, msgbuf, IXGBE_VFMAILBOX_SIZE);
346 * ixgbevf_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
352 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
355 struct ixgbe_mbx_info *mbx = &hw->mbx;
359 msgbuf[0] = IXGBE_VF_SET_VLAN;
361 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
362 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
364 err = mbx->ops.write_posted(hw, msgbuf, 2);
368 err = mbx->ops.read_posted(hw, msgbuf, 2);
372 /* remove extra bits from the message */
373 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
374 msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT);
376 if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_ACK))
377 err = IXGBE_ERR_INVALID_ARGUMENT;
384 * ixgbevf_setup_mac_link_vf - Setup MAC link settings
385 * @hw: pointer to hardware structure
386 * @speed: Unused in this implementation
387 * @autoneg: Unused in this implementation
388 * @autoneg_wait_to_complete: Unused in this implementation
390 * Do nothing and return success. VF drivers are not allowed to change
391 * global settings. Maintained for driver compatibility.
393 static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw,
394 ixgbe_link_speed speed, bool autoneg,
395 bool autoneg_wait_to_complete)
401 * ixgbevf_check_mac_link_vf - Get link/speed status
402 * @hw: pointer to hardware structure
403 * @speed: pointer to link speed
404 * @link_up: true is link is up, false otherwise
405 * @autoneg_wait_to_complete: true when waiting for completion is needed
407 * Reads the links register to determine if link is up and the current speed
409 static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw,
410 ixgbe_link_speed *speed,
412 bool autoneg_wait_to_complete)
414 struct ixgbe_mbx_info *mbx = &hw->mbx;
415 struct ixgbe_mac_info *mac = &hw->mac;
420 /* If we were hit with a reset drop the link */
421 if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
422 mac->get_link_status = true;
424 if (!mac->get_link_status)
427 /* if link status is down no point in checking to see if pf is up */
428 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
429 if (!(links_reg & IXGBE_LINKS_UP))
432 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
433 case IXGBE_LINKS_SPEED_10G_82599:
434 *speed = IXGBE_LINK_SPEED_10GB_FULL;
436 case IXGBE_LINKS_SPEED_1G_82599:
437 *speed = IXGBE_LINK_SPEED_1GB_FULL;
439 case IXGBE_LINKS_SPEED_100_82599:
440 *speed = IXGBE_LINK_SPEED_100_FULL;
444 /* if the read failed it could just be a mailbox collision, best wait
445 * until we are called again and don't report an error */
446 if (mbx->ops.read(hw, &in_msg, 1))
449 if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
450 /* msg is not CTS and is NACK we must have lost CTS status */
451 if (in_msg & IXGBE_VT_MSGTYPE_NACK)
456 /* the pf is talking, if we timed out in the past we reinit */
462 /* if we passed all the tests above then the link is up and we no
463 * longer need to check for link */
464 mac->get_link_status = false;
467 *link_up = !mac->get_link_status;
472 * ixgbevf_rlpml_set_vf - Set the maximum receive packet length
473 * @hw: pointer to the HW structure
474 * @max_size: value to assign to max frame size
476 void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
480 msgbuf[0] = IXGBE_VF_SET_LPE;
481 msgbuf[1] = max_size;
482 ixgbevf_write_msg_read_ack(hw, msgbuf, 2);
486 * ixgbevf_negotiate_api_version - Negotiate supported API version
487 * @hw: pointer to the HW structure
488 * @api: integer containing requested API version
490 int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
495 /* Negotiate the mailbox API version */
496 msg[0] = IXGBE_VF_API_NEGOTIATE;
499 err = hw->mbx.ops.write_posted(hw, msg, 3);
502 err = hw->mbx.ops.read_posted(hw, msg, 3);
505 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
507 /* Store value and return 0 on success */
508 if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) {
509 hw->api_version = api;
513 err = IXGBE_ERR_INVALID_ARGUMENT;
519 int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
520 unsigned int *default_tc)
525 /* do nothing if API doesn't support ixgbevf_get_queues */
526 switch (hw->api_version) {
527 case ixgbe_mbox_api_11:
533 /* Fetch queue configuration from the PF */
534 msg[0] = IXGBE_VF_GET_QUEUE;
535 msg[1] = msg[2] = msg[3] = msg[4] = 0;
536 err = hw->mbx.ops.write_posted(hw, msg, 5);
539 err = hw->mbx.ops.read_posted(hw, msg, 5);
542 msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
545 * if we we didn't get an ACK there must have been
546 * some sort of mailbox error so we should treat it
549 if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK))
550 return IXGBE_ERR_MBX;
552 /* record and validate values from message */
553 hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES];
554 if (hw->mac.max_tx_queues == 0 ||
555 hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES)
556 hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES;
558 hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES];
559 if (hw->mac.max_rx_queues == 0 ||
560 hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES)
561 hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
563 *num_tcs = msg[IXGBE_VF_TRANS_VLAN];
564 /* in case of unknown state assume we cannot tag frames */
565 if (*num_tcs > hw->mac.max_rx_queues)
568 *default_tc = msg[IXGBE_VF_DEF_QUEUE];
569 /* default to queue 0 on out-of-bounds queue number */
570 if (*default_tc >= hw->mac.max_tx_queues)
577 static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
578 .init_hw = ixgbevf_init_hw_vf,
579 .reset_hw = ixgbevf_reset_hw_vf,
580 .start_hw = ixgbevf_start_hw_vf,
581 .get_mac_addr = ixgbevf_get_mac_addr_vf,
582 .stop_adapter = ixgbevf_stop_hw_vf,
583 .setup_link = ixgbevf_setup_mac_link_vf,
584 .check_link = ixgbevf_check_mac_link_vf,
585 .set_rar = ixgbevf_set_rar_vf,
586 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf,
587 .set_uc_addr = ixgbevf_set_uc_addr_vf,
588 .set_vfta = ixgbevf_set_vfta_vf,
591 const struct ixgbevf_info ixgbevf_82599_vf_info = {
592 .mac = ixgbe_mac_82599_vf,
593 .mac_ops = &ixgbevf_mac_ops,
596 const struct ixgbevf_info ixgbevf_X540_vf_info = {
597 .mac = ixgbe_mac_X540_vf,
598 .mac_ops = &ixgbevf_mac_ops,