1079 lines
28 KiB
C
1079 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 1999 - 2018 Intel Corporation. */
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#include "vf.h"
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#include "ixgbevf.h"
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/* On Hyper-V, to reset, we need to read from this offset
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* from the PCI config space. This is the mechanism used on
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* Hyper-V to support PF/VF communication.
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*/
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#define IXGBE_HV_RESET_OFFSET 0x201
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static inline s32 ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw, u32 *msg,
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u32 *retmsg, u16 size)
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{
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s32 retval = ixgbevf_write_mbx(hw, msg, size);
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if (retval)
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return retval;
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return ixgbevf_poll_mbx(hw, retmsg, size);
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}
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/**
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* ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
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* @hw: pointer to hardware structure
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*
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* Starts the hardware by filling the bus info structure and media type, clears
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* all on chip counters, initializes receive address registers, multicast
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* table, VLAN filter table, calls routine to set up link and flow control
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* settings, and leaves transmit and receive units disabled and uninitialized
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**/
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static s32 ixgbevf_start_hw_vf(struct ixgbe_hw *hw)
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{
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/* Clear adapter stopped flag */
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hw->adapter_stopped = false;
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return 0;
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}
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/**
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* ixgbevf_init_hw_vf - virtual function hardware initialization
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* @hw: pointer to hardware structure
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*
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* Initialize the hardware by resetting the hardware and then starting
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* the hardware
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**/
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static s32 ixgbevf_init_hw_vf(struct ixgbe_hw *hw)
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{
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s32 status = hw->mac.ops.start_hw(hw);
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hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
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return status;
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}
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/**
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* ixgbevf_reset_hw_vf - Performs hardware reset
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* @hw: pointer to hardware structure
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*
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* Resets the hardware by resetting the transmit and receive units, masks and
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* clears all interrupts.
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**/
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static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
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{
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struct ixgbe_mbx_info *mbx = &hw->mbx;
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u32 timeout = IXGBE_VF_INIT_TIMEOUT;
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u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
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u8 *addr = (u8 *)(&msgbuf[1]);
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s32 ret_val;
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/* Call adapter stop to disable tx/rx and clear interrupts */
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hw->mac.ops.stop_adapter(hw);
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/* reset the api version */
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hw->api_version = ixgbe_mbox_api_10;
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hw->mbx.ops.init_params(hw);
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memcpy(&hw->mbx.ops, &ixgbevf_mbx_ops_legacy,
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sizeof(struct ixgbe_mbx_operations));
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IXGBE_WRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
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IXGBE_WRITE_FLUSH(hw);
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/* we cannot reset while the RSTI / RSTD bits are asserted */
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while (!mbx->ops.check_for_rst(hw) && timeout) {
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timeout--;
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udelay(5);
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}
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if (!timeout)
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return IXGBE_ERR_RESET_FAILED;
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/* mailbox timeout can now become active */
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mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
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msgbuf[0] = IXGBE_VF_RESET;
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ixgbevf_write_mbx(hw, msgbuf, 1);
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mdelay(10);
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/* set our "perm_addr" based on info provided by PF
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* also set up the mc_filter_type which is piggy backed
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* on the mac address in word 3
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*/
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ret_val = ixgbevf_poll_mbx(hw, msgbuf, IXGBE_VF_PERMADDR_MSG_LEN);
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if (ret_val)
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return ret_val;
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/* New versions of the PF may NACK the reset return message
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* to indicate that no MAC address has yet been assigned for
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* the VF.
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*/
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if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_SUCCESS) &&
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msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_FAILURE))
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return IXGBE_ERR_INVALID_MAC_ADDR;
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if (msgbuf[0] == (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_SUCCESS))
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ether_addr_copy(hw->mac.perm_addr, addr);
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hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
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return 0;
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}
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/**
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* ixgbevf_hv_reset_hw_vf - reset via Hyper-V
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* @hw: pointer to private hardware struct
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*
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* Hyper-V variant; the VF/PF communication is through the PCI
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* config space.
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*/
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static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw)
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{
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#if IS_ENABLED(CONFIG_PCI_MMCONFIG)
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struct ixgbevf_adapter *adapter = hw->back;
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int i;
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for (i = 0; i < 6; i++)
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pci_read_config_byte(adapter->pdev,
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(i + IXGBE_HV_RESET_OFFSET),
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&hw->mac.perm_addr[i]);
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return 0;
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#else
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pr_err("PCI_MMCONFIG needs to be enabled for Hyper-V\n");
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return -EOPNOTSUPP;
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#endif
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}
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/**
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* ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
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* @hw: pointer to hardware structure
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*
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* Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
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* disables transmit and receive units. The adapter_stopped flag is used by
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* the shared code and drivers to determine if the adapter is in a stopped
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* state and should not touch the hardware.
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**/
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static s32 ixgbevf_stop_hw_vf(struct ixgbe_hw *hw)
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{
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u32 number_of_queues;
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u32 reg_val;
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u16 i;
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/* Set the adapter_stopped flag so other driver functions stop touching
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* the hardware
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*/
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hw->adapter_stopped = true;
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/* Disable the receive unit by stopped each queue */
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number_of_queues = hw->mac.max_rx_queues;
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for (i = 0; i < number_of_queues; i++) {
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reg_val = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i));
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if (reg_val & IXGBE_RXDCTL_ENABLE) {
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reg_val &= ~IXGBE_RXDCTL_ENABLE;
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IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
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}
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}
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IXGBE_WRITE_FLUSH(hw);
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/* Clear interrupt mask to stop from interrupts being generated */
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IXGBE_WRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
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/* Clear any pending interrupts */
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IXGBE_READ_REG(hw, IXGBE_VTEICR);
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/* Disable the transmit unit. Each queue must be disabled. */
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number_of_queues = hw->mac.max_tx_queues;
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for (i = 0; i < number_of_queues; i++) {
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reg_val = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i));
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if (reg_val & IXGBE_TXDCTL_ENABLE) {
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reg_val &= ~IXGBE_TXDCTL_ENABLE;
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IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), reg_val);
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}
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}
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return 0;
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}
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/**
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* ixgbevf_mta_vector - Determines bit-vector in multicast table to set
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* @hw: pointer to hardware structure
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* @mc_addr: the multicast address
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*
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* Extracts the 12 bits, from a multicast address, to determine which
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* bit-vector to set in the multicast table. The hardware uses 12 bits, from
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* incoming Rx multicast addresses, to determine the bit-vector to check in
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* the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
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* by the MO field of the MCSTCTRL. The MO field is set during initialization
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* to mc_filter_type.
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**/
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static s32 ixgbevf_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
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{
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u32 vector = 0;
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switch (hw->mac.mc_filter_type) {
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case 0: /* use bits [47:36] of the address */
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vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
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break;
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case 1: /* use bits [46:35] of the address */
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vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
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break;
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case 2: /* use bits [45:34] of the address */
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vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
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break;
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case 3: /* use bits [43:32] of the address */
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vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
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break;
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default: /* Invalid mc_filter_type */
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break;
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}
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/* vector can only be 12-bits or boundary will be exceeded */
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vector &= 0xFFF;
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return vector;
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}
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/**
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* ixgbevf_get_mac_addr_vf - Read device MAC address
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* @hw: pointer to the HW structure
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* @mac_addr: pointer to storage for retrieved MAC address
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**/
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static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
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{
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ether_addr_copy(mac_addr, hw->mac.perm_addr);
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return 0;
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}
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static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
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{
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u32 msgbuf[3], msgbuf_chk;
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u8 *msg_addr = (u8 *)(&msgbuf[1]);
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s32 ret_val;
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memset(msgbuf, 0, sizeof(msgbuf));
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/* If index is one then this is the start of a new list and needs
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* indication to the PF so it can do it's own list management.
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* If it is zero then that tells the PF to just clear all of
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* this VF's macvlans and there is no new list.
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*/
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msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
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msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
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msgbuf_chk = msgbuf[0];
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if (addr)
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ether_addr_copy(msg_addr, addr);
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ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf,
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ARRAY_SIZE(msgbuf));
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if (!ret_val) {
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msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
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if (msgbuf[0] == (msgbuf_chk | IXGBE_VT_MSGTYPE_FAILURE))
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return -ENOMEM;
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}
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return ret_val;
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}
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static s32 ixgbevf_hv_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
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{
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return -EOPNOTSUPP;
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}
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/**
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* ixgbevf_get_reta_locked - get the RSS redirection table (RETA) contents.
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* @hw: pointer to hardware structure
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* @reta: buffer to fill with RETA contents.
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* @num_rx_queues: Number of Rx queues configured for this port
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*
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* The "reta" buffer should be big enough to contain 32 registers.
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*
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* Returns: 0 on success.
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* if API doesn't support this operation - (-EOPNOTSUPP).
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*/
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int ixgbevf_get_reta_locked(struct ixgbe_hw *hw, u32 *reta, int num_rx_queues)
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{
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int err, i, j;
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u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
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u32 *hw_reta = &msgbuf[1];
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u32 mask = 0;
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/* We have to use a mailbox for 82599 and x540 devices only.
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* For these devices RETA has 128 entries.
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* Also these VFs support up to 4 RSS queues. Therefore PF will compress
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* 16 RETA entries in each DWORD giving 2 bits to each entry.
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*/
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int dwords = IXGBEVF_82599_RETA_SIZE / 16;
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/* We support the RSS querying for 82599 and x540 devices only.
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* Thus return an error if API doesn't support RETA querying or querying
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* is not supported for this device type.
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*/
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switch (hw->api_version) {
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case ixgbe_mbox_api_15:
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case ixgbe_mbox_api_14:
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case ixgbe_mbox_api_13:
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case ixgbe_mbox_api_12:
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if (hw->mac.type < ixgbe_mac_X550_vf)
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break;
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fallthrough;
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default:
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return -EOPNOTSUPP;
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}
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msgbuf[0] = IXGBE_VF_GET_RETA;
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err = ixgbevf_write_mbx(hw, msgbuf, 1);
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if (err)
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return err;
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err = ixgbevf_poll_mbx(hw, msgbuf, dwords + 1);
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if (err)
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return err;
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msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
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/* If the operation has been refused by a PF return -EPERM */
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if (msgbuf[0] == (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_FAILURE))
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return -EPERM;
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/* If we didn't get an ACK there must have been
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* some sort of mailbox error so we should treat it
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* as such.
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*/
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if (msgbuf[0] != (IXGBE_VF_GET_RETA | IXGBE_VT_MSGTYPE_SUCCESS))
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return IXGBE_ERR_MBX;
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/* ixgbevf doesn't support more than 2 queues at the moment */
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if (num_rx_queues > 1)
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mask = 0x1;
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for (i = 0; i < dwords; i++)
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for (j = 0; j < 16; j++)
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reta[i * 16 + j] = (hw_reta[i] >> (2 * j)) & mask;
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return 0;
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}
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/**
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* ixgbevf_get_rss_key_locked - get the RSS Random Key
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* @hw: pointer to the HW structure
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* @rss_key: buffer to fill with RSS Hash Key contents.
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*
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* The "rss_key" buffer should be big enough to contain 10 registers.
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*
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* Returns: 0 on success.
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* if API doesn't support this operation - (-EOPNOTSUPP).
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*/
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int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key)
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{
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int err;
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u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
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/* We currently support the RSS Random Key retrieval for 82599 and x540
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* devices only.
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*
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* Thus return an error if API doesn't support RSS Random Key retrieval
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* or if the operation is not supported for this device type.
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*/
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switch (hw->api_version) {
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case ixgbe_mbox_api_15:
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case ixgbe_mbox_api_14:
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case ixgbe_mbox_api_13:
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case ixgbe_mbox_api_12:
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if (hw->mac.type < ixgbe_mac_X550_vf)
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break;
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fallthrough;
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default:
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return -EOPNOTSUPP;
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}
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msgbuf[0] = IXGBE_VF_GET_RSS_KEY;
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err = ixgbevf_write_mbx(hw, msgbuf, 1);
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if (err)
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return err;
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err = ixgbevf_poll_mbx(hw, msgbuf, 11);
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if (err)
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return err;
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msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
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/* If the operation has been refused by a PF return -EPERM */
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if (msgbuf[0] == (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_FAILURE))
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return -EPERM;
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/* If we didn't get an ACK there must have been
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* some sort of mailbox error so we should treat it
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* as such.
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*/
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if (msgbuf[0] != (IXGBE_VF_GET_RSS_KEY | IXGBE_VT_MSGTYPE_SUCCESS))
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return IXGBE_ERR_MBX;
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memcpy(rss_key, msgbuf + 1, IXGBEVF_RSS_HASH_KEY_SIZE);
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return 0;
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}
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/**
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* ixgbevf_set_rar_vf - set device MAC address
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* @hw: pointer to hardware structure
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* @index: Receive address register to write
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* @addr: Address to put into receive address register
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* @vmdq: Unused in this implementation
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**/
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static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
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u32 vmdq)
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{
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u32 msgbuf[3];
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u8 *msg_addr = (u8 *)(&msgbuf[1]);
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s32 ret_val;
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memset(msgbuf, 0, sizeof(msgbuf));
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msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
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ether_addr_copy(msg_addr, addr);
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ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf,
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ARRAY_SIZE(msgbuf));
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msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
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/* if nacked the address was rejected, use "perm_addr" */
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if (!ret_val &&
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(msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_FAILURE))) {
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ixgbevf_get_mac_addr_vf(hw, hw->mac.addr);
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return IXGBE_ERR_MBX;
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}
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return ret_val;
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}
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/**
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* ixgbevf_hv_set_rar_vf - set device MAC address Hyper-V variant
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* @hw: pointer to hardware structure
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* @index: Receive address register to write
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* @addr: Address to put into receive address register
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* @vmdq: Unused in this implementation
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*
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* We don't really allow setting the device MAC address. However,
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* if the address being set is the permanent MAC address we will
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* permit that.
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**/
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static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
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u32 vmdq)
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{
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if (ether_addr_equal(addr, hw->mac.perm_addr))
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return 0;
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return -EOPNOTSUPP;
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}
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/**
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* ixgbevf_update_mc_addr_list_vf - Update Multicast addresses
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* @hw: pointer to the HW structure
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* @netdev: pointer to net device structure
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*
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* Updates the Multicast Table Array.
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**/
|
|
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);
|
|
}
|
|
|
|
return ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf,
|
|
IXGBE_VFMAILBOX_SIZE);
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_hv_update_mc_addr_list_vf - stub
|
|
* @hw: unused
|
|
* @netdev: unused
|
|
*
|
|
* Hyper-V variant - just a stub.
|
|
*/
|
|
static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw,
|
|
struct net_device *netdev)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_update_xcast_mode - Update Multicast mode
|
|
* @hw: pointer to the HW structure
|
|
* @xcast_mode: new multicast mode
|
|
*
|
|
* Updates the Multicast Mode of VF.
|
|
**/
|
|
static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
|
|
{
|
|
u32 msgbuf[2];
|
|
s32 err;
|
|
|
|
switch (hw->api_version) {
|
|
case ixgbe_mbox_api_12:
|
|
/* promisc introduced in 1.3 version */
|
|
if (xcast_mode == IXGBEVF_XCAST_MODE_PROMISC)
|
|
return -EOPNOTSUPP;
|
|
fallthrough;
|
|
case ixgbe_mbox_api_13:
|
|
case ixgbe_mbox_api_14:
|
|
case ixgbe_mbox_api_15:
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE;
|
|
msgbuf[1] = xcast_mode;
|
|
|
|
err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf,
|
|
ARRAY_SIZE(msgbuf));
|
|
if (err)
|
|
return err;
|
|
|
|
msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
|
|
if (msgbuf[0] == (IXGBE_VF_UPDATE_XCAST_MODE | IXGBE_VT_MSGTYPE_FAILURE))
|
|
return -EPERM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_hv_update_xcast_mode - stub
|
|
* @hw: unused
|
|
* @xcast_mode: unused
|
|
*
|
|
* Hyper-V variant - just a stub.
|
|
*/
|
|
static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_get_link_state_vf - Get VF link state from PF
|
|
* @hw: pointer to the HW structure
|
|
* @link_state: link state storage
|
|
*
|
|
* Returns state of the operation error or success.
|
|
*/
|
|
static s32 ixgbevf_get_link_state_vf(struct ixgbe_hw *hw, bool *link_state)
|
|
{
|
|
u32 msgbuf[2];
|
|
s32 ret_val;
|
|
s32 err;
|
|
|
|
msgbuf[0] = IXGBE_VF_GET_LINK_STATE;
|
|
msgbuf[1] = 0x0;
|
|
|
|
err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
|
|
|
|
if (err || (msgbuf[0] & IXGBE_VT_MSGTYPE_FAILURE)) {
|
|
ret_val = IXGBE_ERR_MBX;
|
|
} else {
|
|
ret_val = 0;
|
|
*link_state = msgbuf[1];
|
|
}
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_hv_get_link_state_vf - * Hyper-V variant - just a stub.
|
|
* @hw: unused
|
|
* @link_state: unused
|
|
*
|
|
* Hyper-V variant; there is no mailbox communication.
|
|
*/
|
|
static s32 ixgbevf_hv_get_link_state_vf(struct ixgbe_hw *hw, bool *link_state)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/**
|
|
* 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];
|
|
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 = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf,
|
|
ARRAY_SIZE(msgbuf));
|
|
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_SUCCESS))
|
|
err = IXGBE_ERR_INVALID_ARGUMENT;
|
|
|
|
mbx_err:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_hv_set_vfta_vf - * Hyper-V variant - just a stub.
|
|
* @hw: unused
|
|
* @vlan: unused
|
|
* @vind: unused
|
|
* @vlan_on: unused
|
|
*/
|
|
static s32 ixgbevf_hv_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
|
|
bool vlan_on)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/**
|
|
* 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: unused
|
|
*
|
|
* 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)) {
|
|
if (hw->api_version >= ixgbe_mbox_api_15)
|
|
mac->get_link_status = false;
|
|
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_FAILURE)
|
|
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_hv_check_mac_link_vf - check link
|
|
* @hw: pointer to private hardware struct
|
|
* @speed: pointer to link speed
|
|
* @link_up: true is link is up, false otherwise
|
|
* @autoneg_wait_to_complete: unused
|
|
*
|
|
* Hyper-V variant; there is no mailbox communication.
|
|
*/
|
|
static s32 ixgbevf_hv_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;
|
|
u32 links_reg;
|
|
|
|
/* 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 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 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_set_rlpml_vf - Set the maximum receive packet length
|
|
* @hw: pointer to the HW structure
|
|
* @max_size: value to assign to max frame size
|
|
**/
|
|
static s32 ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
|
|
{
|
|
u32 msgbuf[2];
|
|
s32 ret_val;
|
|
|
|
msgbuf[0] = IXGBE_VF_SET_LPE;
|
|
msgbuf[1] = max_size;
|
|
|
|
ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf,
|
|
ARRAY_SIZE(msgbuf));
|
|
if (ret_val)
|
|
return ret_val;
|
|
if ((msgbuf[0] & IXGBE_VF_SET_LPE) &&
|
|
(msgbuf[0] & IXGBE_VT_MSGTYPE_FAILURE))
|
|
return IXGBE_ERR_MBX;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_hv_set_rlpml_vf - Set the maximum receive packet length
|
|
* @hw: pointer to the HW structure
|
|
* @max_size: value to assign to max frame size
|
|
* Hyper-V variant.
|
|
**/
|
|
static s32 ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
|
|
{
|
|
u32 reg;
|
|
|
|
/* If we are on Hyper-V, we implement this functionality
|
|
* differently.
|
|
*/
|
|
reg = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0));
|
|
/* CRC == 4 */
|
|
reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_negotiate_api_version_vf - Negotiate supported API version
|
|
* @hw: pointer to the HW structure
|
|
* @api: integer containing requested API version
|
|
**/
|
|
static int ixgbevf_negotiate_api_version_vf(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 = ixgbevf_write_msg_read_ack(hw, msg, msg, ARRAY_SIZE(msg));
|
|
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_SUCCESS)) {
|
|
hw->api_version = api;
|
|
return 0;
|
|
}
|
|
|
|
err = IXGBE_ERR_INVALID_ARGUMENT;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* ixgbevf_hv_negotiate_api_version_vf - Negotiate supported API version
|
|
* @hw: pointer to the HW structure
|
|
* @api: integer containing requested API version
|
|
* Hyper-V version - only ixgbe_mbox_api_10 supported.
|
|
**/
|
|
static int ixgbevf_hv_negotiate_api_version_vf(struct ixgbe_hw *hw, int api)
|
|
{
|
|
/* Hyper-V only supports api version ixgbe_mbox_api_10 */
|
|
if (api != ixgbe_mbox_api_10)
|
|
return IXGBE_ERR_INVALID_ARGUMENT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
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:
|
|
case ixgbe_mbox_api_13:
|
|
case ixgbe_mbox_api_14:
|
|
case ixgbe_mbox_api_15:
|
|
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 = ixgbevf_write_msg_read_ack(hw, msg, msg, ARRAY_SIZE(msg));
|
|
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_SUCCESS))
|
|
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,
|
|
.negotiate_api_version = ixgbevf_negotiate_api_version_vf,
|
|
.set_rar = ixgbevf_set_rar_vf,
|
|
.update_mc_addr_list = ixgbevf_update_mc_addr_list_vf,
|
|
.update_xcast_mode = ixgbevf_update_xcast_mode,
|
|
.get_link_state = ixgbevf_get_link_state_vf,
|
|
.set_uc_addr = ixgbevf_set_uc_addr_vf,
|
|
.set_vfta = ixgbevf_set_vfta_vf,
|
|
.set_rlpml = ixgbevf_set_rlpml_vf,
|
|
};
|
|
|
|
static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = {
|
|
.init_hw = ixgbevf_init_hw_vf,
|
|
.reset_hw = ixgbevf_hv_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_hv_check_mac_link_vf,
|
|
.negotiate_api_version = ixgbevf_hv_negotiate_api_version_vf,
|
|
.set_rar = ixgbevf_hv_set_rar_vf,
|
|
.update_mc_addr_list = ixgbevf_hv_update_mc_addr_list_vf,
|
|
.update_xcast_mode = ixgbevf_hv_update_xcast_mode,
|
|
.get_link_state = ixgbevf_hv_get_link_state_vf,
|
|
.set_uc_addr = ixgbevf_hv_set_uc_addr_vf,
|
|
.set_vfta = ixgbevf_hv_set_vfta_vf,
|
|
.set_rlpml = ixgbevf_hv_set_rlpml_vf,
|
|
};
|
|
|
|
const struct ixgbevf_info ixgbevf_82599_vf_info = {
|
|
.mac = ixgbe_mac_82599_vf,
|
|
.mac_ops = &ixgbevf_mac_ops,
|
|
};
|
|
|
|
const struct ixgbevf_info ixgbevf_82599_vf_hv_info = {
|
|
.mac = ixgbe_mac_82599_vf,
|
|
.mac_ops = &ixgbevf_hv_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_X540_vf_hv_info = {
|
|
.mac = ixgbe_mac_X540_vf,
|
|
.mac_ops = &ixgbevf_hv_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_X550_vf_hv_info = {
|
|
.mac = ixgbe_mac_X550_vf,
|
|
.mac_ops = &ixgbevf_hv_mac_ops,
|
|
};
|
|
|
|
const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = {
|
|
.mac = ixgbe_mac_X550EM_x_vf,
|
|
.mac_ops = &ixgbevf_mac_ops,
|
|
};
|
|
|
|
const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = {
|
|
.mac = ixgbe_mac_X550EM_x_vf,
|
|
.mac_ops = &ixgbevf_hv_mac_ops,
|
|
};
|
|
|
|
const struct ixgbevf_info ixgbevf_x550em_a_vf_info = {
|
|
.mac = ixgbe_mac_x550em_a_vf,
|
|
.mac_ops = &ixgbevf_mac_ops,
|
|
};
|