1 /*******************************************************************************
3 Intel 82599 Virtual Function driver
4 Copyright(c) 1999 - 2010 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 *******************************************************************************/
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 reseting 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 IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
82 IXGBE_WRITE_FLUSH(hw);
84 /* we cannot reset while the RSTI / RSTD bits are asserted */
85 while (!mbx->ops.check_for_rst(hw) && timeout) {
91 return IXGBE_ERR_RESET_FAILED;
93 /* mailbox timeout can now become active */
94 mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
96 msgbuf[0] = IXGBE_VF_RESET;
97 mbx->ops.write_posted(hw, msgbuf, 1);
101 /* set our "perm_addr" based on info provided by PF */
102 /* also set up the mc_filter_type which is piggy backed
103 * on the mac address in word 3 */
104 ret_val = mbx->ops.read_posted(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN);
108 if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK))
109 return IXGBE_ERR_INVALID_MAC_ADDR;
111 memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
112 hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
118 * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
119 * @hw: pointer to hardware structure
121 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
122 * disables transmit and receive units. The adapter_stopped flag is used by
123 * the shared code and drivers to determine if the adapter is in a stopped
124 * state and should not touch the hardware.
126 static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw)
128 u32 number_of_queues;
133 * Set the adapter_stopped flag so other driver functions stop touching
136 hw->adapter_stopped = true;
138 /* Disable the receive unit by stopped each queue */
139 number_of_queues = hw->mac.max_rx_queues;
140 for (i = 0; i < number_of_queues; i++) {
141 reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
142 if (reg_val & IXGBE_RXDCTL_ENABLE) {
143 reg_val &= ~IXGBE_RXDCTL_ENABLE;
144 IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
148 IXGBE_WRITE_FLUSH(hw);
150 /* Clear interrupt mask to stop from interrupts being generated */
151 IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
153 /* Clear any pending interrupts */
154 IXGBE_READ_REG(hw, IXGBE_VTEICR);
156 /* Disable the transmit unit. Each queue must be disabled. */
157 number_of_queues = hw->mac.max_tx_queues;
158 for (i = 0; i < number_of_queues; i++) {
159 reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
160 if (reg_val & IXGBE_TXDCTL_ENABLE) {
161 reg_val &= ~IXGBE_TXDCTL_ENABLE;
162 IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val);
170 * ixgbevf_mta_vector - Determines bit-vector in multicast table to set
171 * @hw: pointer to hardware structure
172 * @mc_addr: the multicast address
174 * Extracts the 12 bits, from a multicast address, to determine which
175 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
176 * incoming rx multicast addresses, to determine the bit-vector to check in
177 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
178 * by the MO field of the MCSTCTRL. The MO field is set during initialization
181 static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
185 switch (hw->mac.mc_filter_type) {
186 case 0: /* use bits [47:36] of the address */
187 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
189 case 1: /* use bits [46:35] of the address */
190 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
192 case 2: /* use bits [45:34] of the address */
193 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
195 case 3: /* use bits [43:32] of the address */
196 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
198 default: /* Invalid mc_filter_type */
202 /* vector can only be 12-bits or boundary will be exceeded */
208 * ixgbevf_get_mac_addr_vf - Read device MAC address
209 * @hw: pointer to the HW structure
210 * @mac_addr: pointer to storage for retrieved MAC address
212 static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
214 memcpy(mac_addr, hw->mac.perm_addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
220 * ixgbevf_set_rar_vf - set device MAC address
221 * @hw: pointer to hardware structure
222 * @index: Receive address register to write
223 * @addr: Address to put into receive address register
224 * @vmdq: Unused in this implementation
226 static s32 ixgbevf_set_rar_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 msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
236 memcpy(msg_addr, addr, 6);
237 ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
240 ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
242 msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
244 /* if nacked the address was rejected, use "perm_addr" */
246 (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
247 ixgbevf_get_mac_addr_vf(hw, hw->mac.addr);
253 * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses
254 * @hw: pointer to the HW structure
255 * @netdev: pointer to net device structure
257 * Updates the Multicast Table Array.
259 static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
260 struct net_device *netdev)
262 struct netdev_hw_addr *ha;
263 struct ixgbe_mbx_info *mbx = &hw->mbx;
264 u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
265 u16 *vector_list = (u16 *)&msgbuf[1];
268 /* Each entry in the list uses 1 16 bit word. We have 30
269 * 16 bit words available in our HW msg buffer (minus 1 for the
270 * msg type). That's 30 hash values if we pack 'em right. If
271 * there are more than 30 MC addresses to add then punt the
272 * extras for now and then add code to handle more than 30 later.
273 * It would be unusual for a server to request that many multi-cast
274 * addresses except for in large enterprise network environments.
277 cnt = netdev_mc_count(netdev);
280 msgbuf[0] = IXGBE_VF_SET_MULTICAST;
281 msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
284 netdev_for_each_mc_addr(ha, netdev) {
287 vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr);
290 mbx->ops.write_posted(hw, msgbuf, IXGBE_VFMAILBOX_SIZE);
296 * ixgbevf_set_vfta_vf - Set/Unset vlan filter table address
297 * @hw: pointer to the HW structure
298 * @vlan: 12 bit VLAN ID
299 * @vind: unused by VF drivers
300 * @vlan_on: if true then set bit, else clear bit
302 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
305 struct ixgbe_mbx_info *mbx = &hw->mbx;
308 msgbuf[0] = IXGBE_VF_SET_VLAN;
310 /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
311 msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
313 return mbx->ops.write_posted(hw, msgbuf, 2);
317 * ixgbevf_setup_mac_link_vf - Setup MAC link settings
318 * @hw: pointer to hardware structure
319 * @speed: Unused in this implementation
320 * @autoneg: Unused in this implementation
321 * @autoneg_wait_to_complete: Unused in this implementation
323 * Do nothing and return success. VF drivers are not allowed to change
324 * global settings. Maintained for driver compatibility.
326 static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw,
327 ixgbe_link_speed speed, bool autoneg,
328 bool autoneg_wait_to_complete)
334 * ixgbevf_check_mac_link_vf - Get link/speed status
335 * @hw: pointer to hardware structure
336 * @speed: pointer to link speed
337 * @link_up: true is link is up, false otherwise
338 * @autoneg_wait_to_complete: true when waiting for completion is needed
340 * Reads the links register to determine if link is up and the current speed
342 static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw,
343 ixgbe_link_speed *speed,
345 bool autoneg_wait_to_complete)
349 if (!(hw->mbx.ops.check_for_rst(hw))) {
355 links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
357 if (links_reg & IXGBE_LINKS_UP)
362 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
363 IXGBE_LINKS_SPEED_10G_82599)
364 *speed = IXGBE_LINK_SPEED_10GB_FULL;
366 *speed = IXGBE_LINK_SPEED_1GB_FULL;
371 static struct ixgbe_mac_operations ixgbevf_mac_ops = {
372 .init_hw = ixgbevf_init_hw_vf,
373 .reset_hw = ixgbevf_reset_hw_vf,
374 .start_hw = ixgbevf_start_hw_vf,
375 .get_mac_addr = ixgbevf_get_mac_addr_vf,
376 .stop_adapter = ixgbevf_stop_hw_vf,
377 .setup_link = ixgbevf_setup_mac_link_vf,
378 .check_link = ixgbevf_check_mac_link_vf,
379 .set_rar = ixgbevf_set_rar_vf,
380 .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf,
381 .set_vfta = ixgbevf_set_vfta_vf,
384 struct ixgbevf_info ixgbevf_82599_vf_info = {
385 .mac = ixgbe_mac_82599_vf,
386 .mac_ops = &ixgbevf_mac_ops,
389 struct ixgbevf_info ixgbevf_X540_vf_info = {
390 .mac = ixgbe_mac_X540_vf,
391 .mac_ops = &ixgbevf_mac_ops,