// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 1999 - 2018 Intel Corporation. */ #include <linux/pci.h> #include <linux/delay.h> #include "ixgbe.h" #include "ixgbe_mbx.h" /** * ixgbe_read_mbx - Reads a message from the mailbox * @hw: pointer to the HW structure * @msg: The message buffer * @size: Length of buffer * @mbx_id: id of mailbox to read * * returns SUCCESS if it successfully read message from buffer **/ int ixgbe_read_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id) { … } /** * ixgbe_write_mbx - Write a message to the mailbox * @hw: pointer to the HW structure * @msg: The message buffer * @size: Length of buffer * @mbx_id: id of mailbox to write * * returns SUCCESS if it successfully copied message into the buffer **/ int ixgbe_write_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id) { … } /** * ixgbe_check_for_msg - checks to see if someone sent us mail * @hw: pointer to the HW structure * @mbx_id: id of mailbox to check * * returns SUCCESS if the Status bit was found or else ERR_MBX **/ int ixgbe_check_for_msg(struct ixgbe_hw *hw, u16 mbx_id) { … } /** * ixgbe_check_for_ack - checks to see if someone sent us ACK * @hw: pointer to the HW structure * @mbx_id: id of mailbox to check * * returns SUCCESS if the Status bit was found or else ERR_MBX **/ int ixgbe_check_for_ack(struct ixgbe_hw *hw, u16 mbx_id) { … } /** * ixgbe_check_for_rst - checks to see if other side has reset * @hw: pointer to the HW structure * @mbx_id: id of mailbox to check * * returns SUCCESS if the Status bit was found or else ERR_MBX **/ int ixgbe_check_for_rst(struct ixgbe_hw *hw, u16 mbx_id) { … } /** * ixgbe_poll_for_msg - Wait for message notification * @hw: pointer to the HW structure * @mbx_id: id of mailbox to write * * returns SUCCESS if it successfully received a message notification **/ static int ixgbe_poll_for_msg(struct ixgbe_hw *hw, u16 mbx_id) { … } /** * ixgbe_poll_for_ack - Wait for message acknowledgement * @hw: pointer to the HW structure * @mbx_id: id of mailbox to write * * returns SUCCESS if it successfully received a message acknowledgement **/ static int ixgbe_poll_for_ack(struct ixgbe_hw *hw, u16 mbx_id) { … } /** * ixgbe_read_posted_mbx - Wait for message notification and receive message * @hw: pointer to the HW structure * @msg: The message buffer * @size: Length of buffer * @mbx_id: id of mailbox to write * * returns SUCCESS if it successfully received a message notification and * copied it into the receive buffer. **/ static int ixgbe_read_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id) { … } /** * ixgbe_write_posted_mbx - Write a message to the mailbox, wait for ack * @hw: pointer to the HW structure * @msg: The message buffer * @size: Length of buffer * @mbx_id: id of mailbox to write * * returns SUCCESS if it successfully copied message into the buffer and * received an ack to that message within delay * timeout period **/ static int ixgbe_write_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id) { … } static int ixgbe_check_for_bit_pf(struct ixgbe_hw *hw, u32 mask, s32 index) { … } /** * ixgbe_check_for_msg_pf - checks to see if the VF has sent mail * @hw: pointer to the HW structure * @vf_number: the VF index * * returns SUCCESS if the VF has set the Status bit or else ERR_MBX **/ static int ixgbe_check_for_msg_pf(struct ixgbe_hw *hw, u16 vf_number) { … } /** * ixgbe_check_for_ack_pf - checks to see if the VF has ACKed * @hw: pointer to the HW structure * @vf_number: the VF index * * returns SUCCESS if the VF has set the Status bit or else ERR_MBX **/ static int ixgbe_check_for_ack_pf(struct ixgbe_hw *hw, u16 vf_number) { … } /** * ixgbe_check_for_rst_pf - checks to see if the VF has reset * @hw: pointer to the HW structure * @vf_number: the VF index * * returns SUCCESS if the VF has set the Status bit or else ERR_MBX **/ static int ixgbe_check_for_rst_pf(struct ixgbe_hw *hw, u16 vf_number) { … } /** * ixgbe_obtain_mbx_lock_pf - obtain mailbox lock * @hw: pointer to the HW structure * @vf_number: the VF index * * return SUCCESS if we obtained the mailbox lock **/ static int ixgbe_obtain_mbx_lock_pf(struct ixgbe_hw *hw, u16 vf_number) { … } /** * ixgbe_write_mbx_pf - Places a message in the mailbox * @hw: pointer to the HW structure * @msg: The message buffer * @size: Length of buffer * @vf_number: the VF index * * returns SUCCESS if it successfully copied message into the buffer **/ static int ixgbe_write_mbx_pf(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 vf_number) { … } /** * ixgbe_read_mbx_pf - Read a message from the mailbox * @hw: pointer to the HW structure * @msg: The message buffer * @size: Length of buffer * @vf_number: the VF index * * This function copies a message from the mailbox buffer to the caller's * memory buffer. The presumption is that the caller knows that there was * a message due to a VF request so no polling for message is needed. **/ static int ixgbe_read_mbx_pf(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 vf_number) { … } #ifdef CONFIG_PCI_IOV /** * ixgbe_init_mbx_params_pf - set initial values for pf mailbox * @hw: pointer to the HW structure * * Initializes the hw->mbx struct to correct values for pf mailbox */ void ixgbe_init_mbx_params_pf(struct ixgbe_hw *hw) { … } #endif /* CONFIG_PCI_IOV */ const struct ixgbe_mbx_operations mbx_ops_generic = …;
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