| /******************************************************************************* |
| |
| Intel 82599 Virtual Function driver |
| Copyright(c) 1999 - 2012 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, write to the Free Software Foundation, Inc., |
| 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| 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 reseting 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); |
| |
| 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); |
| |
| msleep(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; |
| |
| if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK)) |
| return IXGBE_ERR_INVALID_MAC_ADDR; |
| |
| memcpy(hw->mac.perm_addr, addr, ETH_ALEN); |
| 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) |
| { |
| memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN); |
| |
| 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) |
| memcpy(msg_addr, addr, 6); |
| 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_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; |
| memcpy(msg_addr, addr, 6); |
| 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; |
| 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) |
| { |
| u32 msgbuf[2]; |
| |
| 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; |
| |
| ixgbevf_write_msg_read_ack(hw, msgbuf, 2); |
| |
| return 0; |
| } |
| |
| /** |
| * 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) |
| { |
| u32 links_reg; |
| |
| if (!(hw->mbx.ops.check_for_rst(hw))) { |
| *link_up = false; |
| *speed = 0; |
| return -1; |
| } |
| |
| links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS); |
| |
| if (links_reg & IXGBE_LINKS_UP) |
| *link_up = true; |
| else |
| *link_up = false; |
| |
| 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; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * 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); |
| } |
| |
| 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, |
| }; |