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1026 lines
27 KiB
1026 lines
27 KiB
// 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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|
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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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struct ixgbe_mbx_info *mbx = &hw->mbx; |
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s32 retval = mbx->ops.write_posted(hw, msg, size); |
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if (retval) |
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return retval; |
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return mbx->ops.read_posted(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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s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR; |
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u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN]; |
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u8 *addr = (u8 *)(&msgbuf[1]); |
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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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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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mbx->ops.write_posted(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 = mbx->ops.read_posted(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_ACK) && |
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msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK)) |
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return IXGBE_ERR_INVALID_MAC_ADDR; |
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if (msgbuf[0] == (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK)) |
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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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|
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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_NACK)) |
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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_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 = hw->mbx.ops.write_posted(hw, msgbuf, 1); |
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if (err) |
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return err; |
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err = hw->mbx.ops.read_posted(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_NACK)) |
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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_ACK)) |
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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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|
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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_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 = hw->mbx.ops.write_posted(hw, msgbuf, 1); |
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if (err) |
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return err; |
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err = hw->mbx.ops.read_posted(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_NACK)) |
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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_ACK)) |
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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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|
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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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|
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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_NACK))) { |
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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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|
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return ret_val; |
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} |
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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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|
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return -EOPNOTSUPP; |
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} |
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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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**/ |
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static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw, |
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struct net_device *netdev) |
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{ |
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struct netdev_hw_addr *ha; |
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u32 msgbuf[IXGBE_VFMAILBOX_SIZE]; |
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u16 *vector_list = (u16 *)&msgbuf[1]; |
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u32 cnt, i; |
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|
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/* Each entry in the list uses 1 16 bit word. We have 30 |
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* 16 bit words available in our HW msg buffer (minus 1 for the |
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* msg type). That's 30 hash values if we pack 'em right. If |
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* there are more than 30 MC addresses to add then punt the |
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* extras for now and then add code to handle more than 30 later. |
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* It would be unusual for a server to request that many multi-cast |
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* addresses except for in large enterprise network environments. |
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*/ |
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|
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cnt = netdev_mc_count(netdev); |
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if (cnt > 30) |
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cnt = 30; |
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msgbuf[0] = IXGBE_VF_SET_MULTICAST; |
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msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT; |
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|
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i = 0; |
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netdev_for_each_mc_addr(ha, netdev) { |
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if (i == cnt) |
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break; |
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if (is_link_local_ether_addr(ha->addr)) |
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continue; |
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|
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vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr); |
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} |
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|
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return ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, |
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IXGBE_VFMAILBOX_SIZE); |
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} |
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|
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/** |
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* ixgbevf_hv_update_mc_addr_list_vf - stub |
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* @hw: unused |
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* @netdev: unused |
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* |
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* Hyper-V variant - just a stub. |
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*/ |
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static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw, |
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struct net_device *netdev) |
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{ |
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return -EOPNOTSUPP; |
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} |
|
|
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/** |
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* ixgbevf_update_xcast_mode - Update Multicast mode |
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* @hw: pointer to the HW structure |
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* @xcast_mode: new multicast mode |
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* |
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* Updates the Multicast Mode of VF. |
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**/ |
|
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_14: |
|
case ixgbe_mbox_api_13: |
|
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_NACK)) |
|
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_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_ACK)) |
|
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)) |
|
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_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_NACK)) |
|
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_ACK)) { |
|
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: |
|
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_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, |
|
.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, |
|
.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, |
|
.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, |
|
};
|
|
|