--- /dev/null
+/*******************************************************************************
+
+ Intel 82599 Virtual Function driver
+ Copyright(c) 1999 - 2015 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include "vf.h"
+#include "ixgbevf.h"
+
+/**
+ * ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
+ * @hw: pointer to hardware structure
+ *
+ * Starts the hardware by filling the bus info structure and media type, clears
+ * all on chip counters, initializes receive address registers, multicast
+ * table, VLAN filter table, calls routine to set up link and flow control
+ * settings, and leaves transmit and receive units disabled and uninitialized
+ **/
+static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw)
+{
+ /* Clear adapter stopped flag */
+ hw->adapter_stopped = false;
+
+ return 0;
+}
+
+/**
+ * ixgbevf_init_hw_vf - virtual function hardware initialization
+ * @hw: pointer to hardware structure
+ *
+ * Initialize the hardware by resetting the hardware and then starting
+ * the hardware
+ **/
+static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw)
+{
+ s32 status = hw->mac.ops.start_hw(hw);
+
+ hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
+
+ return status;
+}
+
+/**
+ * ixgbevf_reset_hw_vf - Performs hardware reset
+ * @hw: pointer to hardware structure
+ *
+ * Resets the hardware by resetting the transmit and receive units, masks and
+ * clears all interrupts.
+ **/
+static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ u32 timeout = IXGBE_VF_INIT_TIMEOUT;
+ s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
+ u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
+ u8 *addr = (u8 *)(&msgbuf[1]);
+
+ /* Call adapter stop to disable tx/rx and clear interrupts */
+ hw->mac.ops.stop_adapter(hw);
+
+ /* reset the api version */
+ hw->api_version = ixgbe_mbox_api_10;
+
+ IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
+ IXGBE_WRITE_FLUSH(hw);
+
+ /* we cannot reset while the RSTI / RSTD bits are asserted */
+ while (!mbx->ops.check_for_rst(hw) && timeout) {
+ timeout--;
+ udelay(5);
+ }
+
+ if (!timeout)
+ return IXGBE_ERR_RESET_FAILED;
+
+ /* mailbox timeout can now become active */
+ mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
+
+ msgbuf[0] = IXGBE_VF_RESET;
+ mbx->ops.write_posted(hw, msgbuf, 1);
+
+ mdelay(10);
+
+ /* set our "perm_addr" based on info provided by PF
+ * also set up the mc_filter_type which is piggy backed
+ * on the mac address in word 3
+ */
+ ret_val = mbx->ops.read_posted(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN);
+ if (ret_val)
+ return ret_val;
+
+ /* New versions of the PF may NACK the reset return message
+ * to indicate that no MAC address has yet been assigned for
+ * the VF.
+ */
+ if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) &&
+ msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
+ return IXGBE_ERR_INVALID_MAC_ADDR;
+
+ ether_addr_copy(hw->mac.perm_addr, addr);
+ hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
+
+ return 0;
+}
+
+/**
+ * ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
+ * @hw: pointer to hardware structure
+ *
+ * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
+ * disables transmit and receive units. The adapter_stopped flag is used by
+ * the shared code and drivers to determine if the adapter is in a stopped
+ * state and should not touch the hardware.
+ **/
+static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw)
+{
+ u32 number_of_queues;
+ u32 reg_val;
+ u16 i;
+
+ /* Set the adapter_stopped flag so other driver functions stop touching
+ * the hardware
+ */
+ hw->adapter_stopped = true;
+
+ /* Disable the receive unit by stopped each queue */
+ number_of_queues = hw->mac.max_rx_queues;
+ for (i = 0; i < number_of_queues; i++) {
+ reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
+ if (reg_val & IXGBE_RXDCTL_ENABLE) {
+ reg_val &= ~IXGBE_RXDCTL_ENABLE;
+ IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
+ }
+ }
+
+ IXGBE_WRITE_FLUSH(hw);
+
+ /* Clear interrupt mask to stop from interrupts being generated */
+ IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
+
+ /* Clear any pending interrupts */
+ IXGBE_READ_REG(hw, IXGBE_VTEICR);
+
+ /* Disable the transmit unit. Each queue must be disabled. */
+ number_of_queues = hw->mac.max_tx_queues;
+ for (i = 0; i < number_of_queues; i++) {
+ reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
+ if (reg_val & IXGBE_TXDCTL_ENABLE) {
+ reg_val &= ~IXGBE_TXDCTL_ENABLE;
+ IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val);
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * ixgbevf_mta_vector - Determines bit-vector in multicast table to set
+ * @hw: pointer to hardware structure
+ * @mc_addr: the multicast address
+ *
+ * Extracts the 12 bits, from a multicast address, to determine which
+ * bit-vector to set in the multicast table. The hardware uses 12 bits, from
+ * incoming Rx multicast addresses, to determine the bit-vector to check in
+ * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
+ * by the MO field of the MCSTCTRL. The MO field is set during initialization
+ * to mc_filter_type.
+ **/
+static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
+{
+ u32 vector = 0;
+
+ switch (hw->mac.mc_filter_type) {
+ case 0: /* use bits [47:36] of the address */
+ vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
+ break;
+ case 1: /* use bits [46:35] of the address */
+ vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
+ break;
+ case 2: /* use bits [45:34] of the address */
+ vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
+ break;
+ case 3: /* use bits [43:32] of the address */
+ vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
+ break;
+ default: /* Invalid mc_filter_type */
+ break;
+ }
+
+ /* vector can only be 12-bits or boundary will be exceeded */
+ vector &= 0xFFF;
+ return vector;
+}
+
+/**
+ * ixgbevf_get_mac_addr_vf - Read device MAC address
+ * @hw: pointer to the HW structure
+ * @mac_addr: pointer to storage for retrieved MAC address
+ **/
+static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
+{
+ ether_addr_copy(mac_addr, hw->mac.perm_addr);
+
+ return 0;
+}
+
+static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[3];
+ u8 *msg_addr = (u8 *)(&msgbuf[1]);
+ s32 ret_val;
+
+ memset(msgbuf, 0, sizeof(msgbuf));
+ /* If index is one then this is the start of a new list and needs
+ * indication to the PF so it can do it's own list management.
+ * If it is zero then that tells the PF to just clear all of
+ * this VF's macvlans and there is no new list.
+ */
+ msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
+ msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
+ if (addr)
+ ether_addr_copy(msg_addr, addr);
+ ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
+
+ if (!ret_val)
+ ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+
+ msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+
+ if (!ret_val)
+ if (msgbuf[0] ==
+ (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
+ ret_val = -ENOMEM;
+
+ return ret_val;
+}
+
+/**
+ * ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents.
+ * @adapter: pointer to the port handle
+ * @reta: buffer to fill with RETA contents.
+ * @num_rx_queues: Number of Rx queues configured for this port
+ *
+ * The "reta" buffer should be big enough to contain 32 registers.
+ *
+ * Returns: 0 on success.
+ * if API doesn't support this operation - (-EOPNOTSUPP).
+ */
+int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues)
+{
+ int err, i, j;
+ u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
+ u32 *hw_reta = &msgbuf[1];
+ u32 mask = 0;
+
+ /* We have to use a mailbox for 82599 and x540 devices only.
+ * For these devices RETA has 128 entries.
+ * Also these VFs support up to 4 RSS queues. Therefore PF will compress
+ * 16 RETA entries in each DWORD giving 2 bits to each entry.
+ */
+ int dwords = IXGBEVF_82599_RETA_SIZE / 16;
+
+ /* We support the RSS querying for 82599 and x540 devices only.
+ * Thus return an error if API doesn't support RETA querying or querying
+ * is not supported for this device type.
+ */
+ if (hw->api_version != ixgbe_mbox_api_12 ||
+ hw->mac.type >= ixgbe_mac_X550_vf)
+ return -EOPNOTSUPP;
+
+ msgbuf[0] = IXGBE_VF_GET_RETA;
+
+ err = hw->mbx.ops.write_posted(hw, msgbuf, 1);
+
+ if (err)
+ return err;
+
+ err = hw->mbx.ops.read_posted(hw, msgbuf, dwords + 1);
+
+ if (err)
+ return err;
+
+ msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+
+ /* If the operation has been refused by a PF return -EPERM */
+ if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK))
+ return -EPERM;
+
+ /* If we didn't get an ACK there must have been
+ * some sort of mailbox error so we should treat it
+ * as such.
+ */
+ if (msgbuf[0] != (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_ACK))
+ return IXGBE_ERR_MBX;
+
+ /* ixgbevf doesn't support more than 2 queues at the moment */
+ if (num_rx_queues > 1)
+ mask = 0x1;
+
+ for (i = 0; i < dwords; i++)
+ for (j = 0; j < 16; j++)
+ reta[i * 16 + j] = (hw_reta[i] >> (2 * j)) & mask;
+
+ return 0;
+}
+
+/**
+ * ixgbevf_get_rss_key_locked - get the RSS Random Key
+ * @hw: pointer to the HW structure
+ * @rss_key: buffer to fill with RSS Hash Key contents.
+ *
+ * The "rss_key" buffer should be big enough to contain 10 registers.
+ *
+ * Returns: 0 on success.
+ * if API doesn't support this operation - (-EOPNOTSUPP).
+ */
+int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key)
+{
+ int err;
+ u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
+
+ /* We currently support the RSS Random Key retrieval for 82599 and x540
+ * devices only.
+ *
+ * Thus return an error if API doesn't support RSS Random Key retrieval
+ * or if the operation is not supported for this device type.
+ */
+ if (hw->api_version != ixgbe_mbox_api_12 ||
+ hw->mac.type >= ixgbe_mac_X550_vf)
+ return -EOPNOTSUPP;
+
+ msgbuf[0] = IXGBE_VF_GET_RSS_KEY;
+ err = hw->mbx.ops.write_posted(hw, msgbuf, 1);
+
+ if (err)
+ return err;
+
+ err = hw->mbx.ops.read_posted(hw, msgbuf, 11);
+
+ if (err)
+ return err;
+
+ msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+
+ /* If the operation has been refused by a PF return -EPERM */
+ if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_NACK))
+ return -EPERM;
+
+ /* If we didn't get an ACK there must have been
+ * some sort of mailbox error so we should treat it
+ * as such.
+ */
+ if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_ACK))
+ return IXGBE_ERR_MBX;
+
+ memcpy(rss_key, msgbuf + 1, IXGBEVF_RSS_HASH_KEY_SIZE);
+
+ return 0;
+}
+
+/**
+ * ixgbevf_set_rar_vf - set device MAC address
+ * @hw: pointer to hardware structure
+ * @index: Receive address register to write
+ * @addr: Address to put into receive address register
+ * @vmdq: Unused in this implementation
+ **/
+static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
+ u32 vmdq)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[3];
+ u8 *msg_addr = (u8 *)(&msgbuf[1]);
+ s32 ret_val;
+
+ memset(msgbuf, 0, sizeof(msgbuf));
+ msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
+ ether_addr_copy(msg_addr, addr);
+ ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
+
+ if (!ret_val)
+ ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+
+ msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+
+ /* if nacked the address was rejected, use "perm_addr" */
+ if (!ret_val &&
+ (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
+ ixgbevf_get_mac_addr_vf(hw, hw->mac.addr);
+
+ return ret_val;
+}
+
+static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
+ u32 *msg, u16 size)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ u32 retmsg[IXGBE_VFMAILBOX_SIZE];
+ s32 retval = mbx->ops.write_posted(hw, msg, size);
+
+ if (!retval)
+ mbx->ops.read_posted(hw, retmsg, size);
+}
+
+/**
+ * ixgbevf_update_mc_addr_list_vf - Update Multicast addresses
+ * @hw: pointer to the HW structure
+ * @netdev: pointer to net device structure
+ *
+ * Updates the Multicast Table Array.
+ **/
+static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
+ struct net_device *netdev)
+{
+ struct netdev_hw_addr *ha;
+ u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
+ u16 *vector_list = (u16 *)&msgbuf[1];
+ u32 cnt, i;
+
+ /* Each entry in the list uses 1 16 bit word. We have 30
+ * 16 bit words available in our HW msg buffer (minus 1 for the
+ * msg type). That's 30 hash values if we pack 'em right. If
+ * there are more than 30 MC addresses to add then punt the
+ * extras for now and then add code to handle more than 30 later.
+ * It would be unusual for a server to request that many multi-cast
+ * addresses except for in large enterprise network environments.
+ */
+
+ cnt = netdev_mc_count(netdev);
+ if (cnt > 30)
+ cnt = 30;
+ msgbuf[0] = IXGBE_VF_SET_MULTICAST;
+ msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
+
+ i = 0;
+ netdev_for_each_mc_addr(ha, netdev) {
+ if (i == cnt)
+ break;
+ if (is_link_local_ether_addr(ha->addr))
+ continue;
+
+ vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr);
+ }
+
+ ixgbevf_write_msg_read_ack(hw, msgbuf, IXGBE_VFMAILBOX_SIZE);
+
+ return 0;
+}
+
+/**
+ * ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address
+ * @hw: pointer to the HW structure
+ * @vlan: 12 bit VLAN ID
+ * @vind: unused by VF drivers
+ * @vlan_on: if true then set bit, else clear bit
+ **/
+static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
+ bool vlan_on)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[2];
+ s32 err;
+
+ msgbuf[0] = IXGBE_VF_SET_VLAN;
+ msgbuf[1] = vlan;
+ /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
+ msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
+
+ err = mbx->ops.write_posted(hw, msgbuf, 2);
+ if (err)
+ goto mbx_err;
+
+ err = mbx->ops.read_posted(hw, msgbuf, 2);
+ if (err)
+ goto mbx_err;
+
+ /* remove extra bits from the message */
+ msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+ msgbuf[0] &= ~(0xFF << IXGBE_VT_MSGINFO_SHIFT);
+
+ if (msgbuf[0] != (IXGBE_VF_SET_VLAN | IXGBE_VT_MSGTYPE_ACK))
+ err = IXGBE_ERR_INVALID_ARGUMENT;
+
+mbx_err:
+ return err;
+}
+
+/**
+ * ixgbevf_setup_mac_link_vf - Setup MAC link settings
+ * @hw: pointer to hardware structure
+ * @speed: Unused in this implementation
+ * @autoneg: Unused in this implementation
+ * @autoneg_wait_to_complete: Unused in this implementation
+ *
+ * Do nothing and return success. VF drivers are not allowed to change
+ * global settings. Maintained for driver compatibility.
+ **/
+static s32 ixgbevf_setup_mac_link_vf(struct ixgbe_hw *hw,
+ ixgbe_link_speed speed, bool autoneg,
+ bool autoneg_wait_to_complete)
+{
+ return 0;
+}
+
+/**
+ * ixgbevf_check_mac_link_vf - Get link/speed status
+ * @hw: pointer to hardware structure
+ * @speed: pointer to link speed
+ * @link_up: true is link is up, false otherwise
+ * @autoneg_wait_to_complete: true when waiting for completion is needed
+ *
+ * Reads the links register to determine if link is up and the current speed
+ **/
+static s32 ixgbevf_check_mac_link_vf(struct ixgbe_hw *hw,
+ ixgbe_link_speed *speed,
+ bool *link_up,
+ bool autoneg_wait_to_complete)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ struct ixgbe_mac_info *mac = &hw->mac;
+ s32 ret_val = 0;
+ u32 links_reg;
+ u32 in_msg = 0;
+
+ /* If we were hit with a reset drop the link */
+ if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
+ mac->get_link_status = true;
+
+ if (!mac->get_link_status)
+ goto out;
+
+ /* if link status is down no point in checking to see if pf is up */
+ links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+ if (!(links_reg & IXGBE_LINKS_UP))
+ goto out;
+
+ /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
+ * before the link status is correct
+ */
+ if (mac->type == ixgbe_mac_82599_vf) {
+ int i;
+
+ for (i = 0; i < 5; i++) {
+ udelay(100);
+ links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+
+ if (!(links_reg & IXGBE_LINKS_UP))
+ goto out;
+ }
+ }
+
+ switch (links_reg & IXGBE_LINKS_SPEED_82599) {
+ case IXGBE_LINKS_SPEED_10G_82599:
+ *speed = IXGBE_LINK_SPEED_10GB_FULL;
+ break;
+ case IXGBE_LINKS_SPEED_1G_82599:
+ *speed = IXGBE_LINK_SPEED_1GB_FULL;
+ break;
+ case IXGBE_LINKS_SPEED_100_82599:
+ *speed = IXGBE_LINK_SPEED_100_FULL;
+ break;
+ }
+
+ /* if the read failed it could just be a mailbox collision, best wait
+ * until we are called again and don't report an error
+ */
+ if (mbx->ops.read(hw, &in_msg, 1))
+ goto out;
+
+ if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
+ /* msg is not CTS and is NACK we must have lost CTS status */
+ if (in_msg & IXGBE_VT_MSGTYPE_NACK)
+ ret_val = -1;
+ goto out;
+ }
+
+ /* the pf is talking, if we timed out in the past we reinit */
+ if (!mbx->timeout) {
+ ret_val = -1;
+ goto out;
+ }
+
+ /* if we passed all the tests above then the link is up and we no
+ * longer need to check for link
+ */
+ mac->get_link_status = false;
+
+out:
+ *link_up = !mac->get_link_status;
+ return ret_val;
+}
+
+/**
+ * ixgbevf_rlpml_set_vf - Set the maximum receive packet length
+ * @hw: pointer to the HW structure
+ * @max_size: value to assign to max frame size
+ **/
+void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
+{
+ u32 msgbuf[2];
+
+ msgbuf[0] = IXGBE_VF_SET_LPE;
+ msgbuf[1] = max_size;
+ ixgbevf_write_msg_read_ack(hw, msgbuf, 2);
+}
+
+/**
+ * ixgbevf_negotiate_api_version - Negotiate supported API version
+ * @hw: pointer to the HW structure
+ * @api: integer containing requested API version
+ **/
+int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)
+{
+ int err;
+ u32 msg[3];
+
+ /* Negotiate the mailbox API version */
+ msg[0] = IXGBE_VF_API_NEGOTIATE;
+ msg[1] = api;
+ msg[2] = 0;
+ err = hw->mbx.ops.write_posted(hw, msg, 3);
+
+ if (!err)
+ err = hw->mbx.ops.read_posted(hw, msg, 3);
+
+ if (!err) {
+ msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+
+ /* Store value and return 0 on success */
+ if (msg[0] == (IXGBE_VF_API_NEGOTIATE | IXGBE_VT_MSGTYPE_ACK)) {
+ hw->api_version = api;
+ return 0;
+ }
+
+ err = IXGBE_ERR_INVALID_ARGUMENT;
+ }
+
+ return err;
+}
+
+int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
+ unsigned int *default_tc)
+{
+ int err;
+ u32 msg[5];
+
+ /* do nothing if API doesn't support ixgbevf_get_queues */
+ switch (hw->api_version) {
+ case ixgbe_mbox_api_11:
+ case ixgbe_mbox_api_12:
+ break;
+ default:
+ return 0;
+ }
+
+ /* Fetch queue configuration from the PF */
+ msg[0] = IXGBE_VF_GET_QUEUE;
+ msg[1] = msg[2] = msg[3] = msg[4] = 0;
+ err = hw->mbx.ops.write_posted(hw, msg, 5);
+
+ if (!err)
+ err = hw->mbx.ops.read_posted(hw, msg, 5);
+
+ if (!err) {
+ msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+
+ /* if we we didn't get an ACK there must have been
+ * some sort of mailbox error so we should treat it
+ * as such
+ */
+ if (msg[0] != (IXGBE_VF_GET_QUEUE | IXGBE_VT_MSGTYPE_ACK))
+ return IXGBE_ERR_MBX;
+
+ /* record and validate values from message */
+ hw->mac.max_tx_queues = msg[IXGBE_VF_TX_QUEUES];
+ if (hw->mac.max_tx_queues == 0 ||
+ hw->mac.max_tx_queues > IXGBE_VF_MAX_TX_QUEUES)
+ hw->mac.max_tx_queues = IXGBE_VF_MAX_TX_QUEUES;
+
+ hw->mac.max_rx_queues = msg[IXGBE_VF_RX_QUEUES];
+ if (hw->mac.max_rx_queues == 0 ||
+ hw->mac.max_rx_queues > IXGBE_VF_MAX_RX_QUEUES)
+ hw->mac.max_rx_queues = IXGBE_VF_MAX_RX_QUEUES;
+
+ *num_tcs = msg[IXGBE_VF_TRANS_VLAN];
+ /* in case of unknown state assume we cannot tag frames */
+ if (*num_tcs > hw->mac.max_rx_queues)
+ *num_tcs = 1;
+
+ *default_tc = msg[IXGBE_VF_DEF_QUEUE];
+ /* default to queue 0 on out-of-bounds queue number */
+ if (*default_tc >= hw->mac.max_tx_queues)
+ *default_tc = 0;
+ }
+
+ return err;
+}
+
+static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
+ .init_hw = ixgbevf_init_hw_vf,
+ .reset_hw = ixgbevf_reset_hw_vf,
+ .start_hw = ixgbevf_start_hw_vf,
+ .get_mac_addr = ixgbevf_get_mac_addr_vf,
+ .stop_adapter = ixgbevf_stop_hw_vf,
+ .setup_link = ixgbevf_setup_mac_link_vf,
+ .check_link = ixgbevf_check_mac_link_vf,
+ .set_rar = ixgbevf_set_rar_vf,
+ .update_mc_addr_list = ixgbevf_update_mc_addr_list_vf,
+ .set_uc_addr = ixgbevf_set_uc_addr_vf,
+ .set_vfta = ixgbevf_set_vfta_vf,
+};
+
+const struct ixgbevf_info ixgbevf_82599_vf_info = {
+ .mac = ixgbe_mac_82599_vf,
+ .mac_ops = &ixgbevf_mac_ops,
+};
+
+const struct ixgbevf_info ixgbevf_X540_vf_info = {
+ .mac = ixgbe_mac_X540_vf,
+ .mac_ops = &ixgbevf_mac_ops,
+};
+
+const struct ixgbevf_info ixgbevf_X550_vf_info = {
+ .mac = ixgbe_mac_X550_vf,
+ .mac_ops = &ixgbevf_mac_ops,
+};
+
+const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = {
+ .mac = ixgbe_mac_X550EM_x_vf,
+ .mac_ops = &ixgbevf_mac_ops,
+};
Code Review / kvmfornfv.git / blobdiff