diff options
Diffstat (limited to 'src/dpdk22/drivers/net/e1000/base/e1000_mbx.c')
| -rw-r--r-- | src/dpdk22/drivers/net/e1000/base/e1000_mbx.c | 777 |
1 files changed, 0 insertions, 777 deletions
diff --git a/src/dpdk22/drivers/net/e1000/base/e1000_mbx.c b/src/dpdk22/drivers/net/e1000/base/e1000_mbx.c deleted file mode 100644 index 6daf16b0..00000000 --- a/src/dpdk22/drivers/net/e1000/base/e1000_mbx.c +++ /dev/null @@ -1,777 +0,0 @@ -/******************************************************************************* - -Copyright (c) 2001-2015, Intel Corporation -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - 2. Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - 3. Neither the name of the Intel Corporation nor the names of its - contributors may be used to endorse or promote products derived from - this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. - -***************************************************************************/ - -#include "e1000_mbx.h" - -/** - * e1000_null_mbx_check_for_flag - No-op function, return 0 - * @hw: pointer to the HW structure - **/ -STATIC s32 e1000_null_mbx_check_for_flag(struct e1000_hw E1000_UNUSEDARG *hw, - u16 E1000_UNUSEDARG mbx_id) -{ - DEBUGFUNC("e1000_null_mbx_check_flag"); - UNREFERENCED_2PARAMETER(hw, mbx_id); - - return E1000_SUCCESS; -} - -/** - * e1000_null_mbx_transact - No-op function, return 0 - * @hw: pointer to the HW structure - **/ -STATIC s32 e1000_null_mbx_transact(struct e1000_hw E1000_UNUSEDARG *hw, - u32 E1000_UNUSEDARG *msg, - u16 E1000_UNUSEDARG size, - u16 E1000_UNUSEDARG mbx_id) -{ - DEBUGFUNC("e1000_null_mbx_rw_msg"); - UNREFERENCED_4PARAMETER(hw, msg, size, mbx_id); - - return E1000_SUCCESS; -} - -/** - * e1000_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 - **/ -s32 e1000_read_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_read_mbx"); - - /* limit read to size of mailbox */ - if (size > mbx->size) - size = mbx->size; - - if (mbx->ops.read) - ret_val = mbx->ops.read(hw, msg, size, mbx_id); - - return ret_val; -} - -/** - * e1000_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 - **/ -s32 e1000_write_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = E1000_SUCCESS; - - DEBUGFUNC("e1000_write_mbx"); - - if (size > mbx->size) - ret_val = -E1000_ERR_MBX; - - else if (mbx->ops.write) - ret_val = mbx->ops.write(hw, msg, size, mbx_id); - - return ret_val; -} - -/** - * e1000_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 - **/ -s32 e1000_check_for_msg(struct e1000_hw *hw, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_check_for_msg"); - - if (mbx->ops.check_for_msg) - ret_val = mbx->ops.check_for_msg(hw, mbx_id); - - return ret_val; -} - -/** - * e1000_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 - **/ -s32 e1000_check_for_ack(struct e1000_hw *hw, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_check_for_ack"); - - if (mbx->ops.check_for_ack) - ret_val = mbx->ops.check_for_ack(hw, mbx_id); - - return ret_val; -} - -/** - * e1000_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 - **/ -s32 e1000_check_for_rst(struct e1000_hw *hw, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_check_for_rst"); - - if (mbx->ops.check_for_rst) - ret_val = mbx->ops.check_for_rst(hw, mbx_id); - - return ret_val; -} - -/** - * e1000_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 s32 e1000_poll_for_msg(struct e1000_hw *hw, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - int countdown = mbx->timeout; - - DEBUGFUNC("e1000_poll_for_msg"); - - if (!countdown || !mbx->ops.check_for_msg) - goto out; - - while (countdown && mbx->ops.check_for_msg(hw, mbx_id)) { - countdown--; - if (!countdown) - break; - usec_delay(mbx->usec_delay); - } - - /* if we failed, all future posted messages fail until reset */ - if (!countdown) - mbx->timeout = 0; -out: - return countdown ? E1000_SUCCESS : -E1000_ERR_MBX; -} - -/** - * e1000_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 s32 e1000_poll_for_ack(struct e1000_hw *hw, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - int countdown = mbx->timeout; - - DEBUGFUNC("e1000_poll_for_ack"); - - if (!countdown || !mbx->ops.check_for_ack) - goto out; - - while (countdown && mbx->ops.check_for_ack(hw, mbx_id)) { - countdown--; - if (!countdown) - break; - usec_delay(mbx->usec_delay); - } - - /* if we failed, all future posted messages fail until reset */ - if (!countdown) - mbx->timeout = 0; -out: - return countdown ? E1000_SUCCESS : -E1000_ERR_MBX; -} - -/** - * e1000_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. - **/ -s32 e1000_read_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_read_posted_mbx"); - - if (!mbx->ops.read) - goto out; - - ret_val = e1000_poll_for_msg(hw, mbx_id); - - /* if ack received read message, otherwise we timed out */ - if (!ret_val) - ret_val = mbx->ops.read(hw, msg, size, mbx_id); -out: - return ret_val; -} - -/** - * e1000_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 - **/ -s32 e1000_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_write_posted_mbx"); - - /* exit if either we can't write or there isn't a defined timeout */ - if (!mbx->ops.write || !mbx->timeout) - goto out; - - /* send msg */ - ret_val = mbx->ops.write(hw, msg, size, mbx_id); - - /* if msg sent wait until we receive an ack */ - if (!ret_val) - ret_val = e1000_poll_for_ack(hw, mbx_id); -out: - return ret_val; -} - -/** - * e1000_init_mbx_ops_generic - Initialize mbx function pointers - * @hw: pointer to the HW structure - * - * Sets the function pointers to no-op functions - **/ -void e1000_init_mbx_ops_generic(struct e1000_hw *hw) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - mbx->ops.init_params = e1000_null_ops_generic; - mbx->ops.read = e1000_null_mbx_transact; - mbx->ops.write = e1000_null_mbx_transact; - mbx->ops.check_for_msg = e1000_null_mbx_check_for_flag; - mbx->ops.check_for_ack = e1000_null_mbx_check_for_flag; - mbx->ops.check_for_rst = e1000_null_mbx_check_for_flag; - mbx->ops.read_posted = e1000_read_posted_mbx; - mbx->ops.write_posted = e1000_write_posted_mbx; -} - -/** - * e1000_read_v2p_mailbox - read v2p mailbox - * @hw: pointer to the HW structure - * - * This function is used to read the v2p mailbox without losing the read to - * clear status bits. - **/ -STATIC u32 e1000_read_v2p_mailbox(struct e1000_hw *hw) -{ - u32 v2p_mailbox = E1000_READ_REG(hw, E1000_V2PMAILBOX(0)); - - v2p_mailbox |= hw->dev_spec.vf.v2p_mailbox; - hw->dev_spec.vf.v2p_mailbox |= v2p_mailbox & E1000_V2PMAILBOX_R2C_BITS; - - return v2p_mailbox; -} - -/** - * e1000_check_for_bit_vf - Determine if a status bit was set - * @hw: pointer to the HW structure - * @mask: bitmask for bits to be tested and cleared - * - * This function is used to check for the read to clear bits within - * the V2P mailbox. - **/ -STATIC s32 e1000_check_for_bit_vf(struct e1000_hw *hw, u32 mask) -{ - u32 v2p_mailbox = e1000_read_v2p_mailbox(hw); - s32 ret_val = -E1000_ERR_MBX; - - if (v2p_mailbox & mask) - ret_val = E1000_SUCCESS; - - hw->dev_spec.vf.v2p_mailbox &= ~mask; - - return ret_val; -} - -/** - * e1000_check_for_msg_vf - checks to see if the PF has sent mail - * @hw: pointer to the HW structure - * @mbx_id: id of mailbox to check - * - * returns SUCCESS if the PF has set the Status bit or else ERR_MBX - **/ -STATIC s32 e1000_check_for_msg_vf(struct e1000_hw *hw, - u16 E1000_UNUSEDARG mbx_id) -{ - s32 ret_val = -E1000_ERR_MBX; - - UNREFERENCED_1PARAMETER(mbx_id); - DEBUGFUNC("e1000_check_for_msg_vf"); - - if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFSTS)) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.reqs++; - } - - return ret_val; -} - -/** - * e1000_check_for_ack_vf - checks to see if the PF has ACK'd - * @hw: pointer to the HW structure - * @mbx_id: id of mailbox to check - * - * returns SUCCESS if the PF has set the ACK bit or else ERR_MBX - **/ -STATIC s32 e1000_check_for_ack_vf(struct e1000_hw *hw, - u16 E1000_UNUSEDARG mbx_id) -{ - s32 ret_val = -E1000_ERR_MBX; - - UNREFERENCED_1PARAMETER(mbx_id); - DEBUGFUNC("e1000_check_for_ack_vf"); - - if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFACK)) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.acks++; - } - - return ret_val; -} - -/** - * e1000_check_for_rst_vf - checks to see if the PF has reset - * @hw: pointer to the HW structure - * @mbx_id: id of mailbox to check - * - * returns true if the PF has set the reset done bit or else false - **/ -STATIC s32 e1000_check_for_rst_vf(struct e1000_hw *hw, - u16 E1000_UNUSEDARG mbx_id) -{ - s32 ret_val = -E1000_ERR_MBX; - - UNREFERENCED_1PARAMETER(mbx_id); - DEBUGFUNC("e1000_check_for_rst_vf"); - - if (!e1000_check_for_bit_vf(hw, (E1000_V2PMAILBOX_RSTD | - E1000_V2PMAILBOX_RSTI))) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.rsts++; - } - - return ret_val; -} - -/** - * e1000_obtain_mbx_lock_vf - obtain mailbox lock - * @hw: pointer to the HW structure - * - * return SUCCESS if we obtained the mailbox lock - **/ -STATIC s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw) -{ - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_obtain_mbx_lock_vf"); - - /* Take ownership of the buffer */ - E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_VFU); - - /* reserve mailbox for vf use */ - if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU) - ret_val = E1000_SUCCESS; - - return ret_val; -} - -/** - * e1000_write_mbx_vf - 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 - **/ -STATIC s32 e1000_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size, - u16 E1000_UNUSEDARG mbx_id) -{ - s32 ret_val; - u16 i; - - UNREFERENCED_1PARAMETER(mbx_id); - - DEBUGFUNC("e1000_write_mbx_vf"); - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = e1000_obtain_mbx_lock_vf(hw); - if (ret_val) - goto out_no_write; - - /* flush msg and acks as we are overwriting the message buffer */ - e1000_check_for_msg_vf(hw, 0); - e1000_check_for_ack_vf(hw, 0); - - /* copy the caller specified message to the mailbox memory buffer */ - for (i = 0; i < size; i++) - E1000_WRITE_REG_ARRAY(hw, E1000_VMBMEM(0), i, msg[i]); - - /* update stats */ - hw->mbx.stats.msgs_tx++; - - /* Drop VFU and interrupt the PF to tell it a message has been sent */ - E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_REQ); - -out_no_write: - return ret_val; -} - -/** - * e1000_read_mbx_vf - Reads a message from the inbox intended for vf - * @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 - **/ -STATIC s32 e1000_read_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size, - u16 E1000_UNUSEDARG mbx_id) -{ - s32 ret_val = E1000_SUCCESS; - u16 i; - - DEBUGFUNC("e1000_read_mbx_vf"); - UNREFERENCED_1PARAMETER(mbx_id); - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = e1000_obtain_mbx_lock_vf(hw); - if (ret_val) - goto out_no_read; - - /* copy the message from the mailbox memory buffer */ - for (i = 0; i < size; i++) - msg[i] = E1000_READ_REG_ARRAY(hw, E1000_VMBMEM(0), i); - - /* Acknowledge receipt and release mailbox, then we're done */ - E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_ACK); - - /* update stats */ - hw->mbx.stats.msgs_rx++; - -out_no_read: - return ret_val; -} - -/** - * e1000_init_mbx_params_vf - set initial values for vf mailbox - * @hw: pointer to the HW structure - * - * Initializes the hw->mbx struct to correct values for vf mailbox - */ -s32 e1000_init_mbx_params_vf(struct e1000_hw *hw) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - - /* start mailbox as timed out and let the reset_hw call set the timeout - * value to begin communications */ - mbx->timeout = 0; - mbx->usec_delay = E1000_VF_MBX_INIT_DELAY; - - mbx->size = E1000_VFMAILBOX_SIZE; - - mbx->ops.read = e1000_read_mbx_vf; - mbx->ops.write = e1000_write_mbx_vf; - mbx->ops.read_posted = e1000_read_posted_mbx; - mbx->ops.write_posted = e1000_write_posted_mbx; - mbx->ops.check_for_msg = e1000_check_for_msg_vf; - mbx->ops.check_for_ack = e1000_check_for_ack_vf; - mbx->ops.check_for_rst = e1000_check_for_rst_vf; - - mbx->stats.msgs_tx = 0; - mbx->stats.msgs_rx = 0; - mbx->stats.reqs = 0; - mbx->stats.acks = 0; - mbx->stats.rsts = 0; - - return E1000_SUCCESS; -} - -STATIC s32 e1000_check_for_bit_pf(struct e1000_hw *hw, u32 mask) -{ - u32 mbvficr = E1000_READ_REG(hw, E1000_MBVFICR); - s32 ret_val = -E1000_ERR_MBX; - - if (mbvficr & mask) { - ret_val = E1000_SUCCESS; - E1000_WRITE_REG(hw, E1000_MBVFICR, mask); - } - - return ret_val; -} - -/** - * e1000_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 s32 e1000_check_for_msg_pf(struct e1000_hw *hw, u16 vf_number) -{ - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_check_for_msg_pf"); - - if (!e1000_check_for_bit_pf(hw, E1000_MBVFICR_VFREQ_VF1 << vf_number)) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.reqs++; - } - - return ret_val; -} - -/** - * e1000_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 s32 e1000_check_for_ack_pf(struct e1000_hw *hw, u16 vf_number) -{ - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_check_for_ack_pf"); - - if (!e1000_check_for_bit_pf(hw, E1000_MBVFICR_VFACK_VF1 << vf_number)) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.acks++; - } - - return ret_val; -} - -/** - * e1000_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 s32 e1000_check_for_rst_pf(struct e1000_hw *hw, u16 vf_number) -{ - u32 vflre = E1000_READ_REG(hw, E1000_VFLRE); - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("e1000_check_for_rst_pf"); - - if (vflre & (1 << vf_number)) { - ret_val = E1000_SUCCESS; - E1000_WRITE_REG(hw, E1000_VFLRE, (1 << vf_number)); - hw->mbx.stats.rsts++; - } - - return ret_val; -} - -/** - * e1000_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 s32 e1000_obtain_mbx_lock_pf(struct e1000_hw *hw, u16 vf_number) -{ - s32 ret_val = -E1000_ERR_MBX; - u32 p2v_mailbox; - - DEBUGFUNC("e1000_obtain_mbx_lock_pf"); - - /* Take ownership of the buffer */ - E1000_WRITE_REG(hw, E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_PFU); - - /* reserve mailbox for vf use */ - p2v_mailbox = E1000_READ_REG(hw, E1000_P2VMAILBOX(vf_number)); - if (p2v_mailbox & E1000_P2VMAILBOX_PFU) - ret_val = E1000_SUCCESS; - - return ret_val; -} - -/** - * e1000_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 s32 e1000_write_mbx_pf(struct e1000_hw *hw, u32 *msg, u16 size, - u16 vf_number) -{ - s32 ret_val; - u16 i; - - DEBUGFUNC("e1000_write_mbx_pf"); - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = e1000_obtain_mbx_lock_pf(hw, vf_number); - if (ret_val) - goto out_no_write; - - /* flush msg and acks as we are overwriting the message buffer */ - e1000_check_for_msg_pf(hw, vf_number); - e1000_check_for_ack_pf(hw, vf_number); - - /* copy the caller specified message to the mailbox memory buffer */ - for (i = 0; i < size; i++) - E1000_WRITE_REG_ARRAY(hw, E1000_VMBMEM(vf_number), i, msg[i]); - - /* Interrupt VF to tell it a message has been sent and release buffer*/ - E1000_WRITE_REG(hw, E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_STS); - - /* update stats */ - hw->mbx.stats.msgs_tx++; - -out_no_write: - return ret_val; - -} - -/** - * e1000_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 s32 e1000_read_mbx_pf(struct e1000_hw *hw, u32 *msg, u16 size, - u16 vf_number) -{ - s32 ret_val; - u16 i; - - DEBUGFUNC("e1000_read_mbx_pf"); - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = e1000_obtain_mbx_lock_pf(hw, vf_number); - if (ret_val) - goto out_no_read; - - /* copy the message to the mailbox memory buffer */ - for (i = 0; i < size; i++) - msg[i] = E1000_READ_REG_ARRAY(hw, E1000_VMBMEM(vf_number), i); - - /* Acknowledge the message and release buffer */ - E1000_WRITE_REG(hw, E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_ACK); - - /* update stats */ - hw->mbx.stats.msgs_rx++; - -out_no_read: - return ret_val; -} - -/** - * e1000_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 - */ -s32 e1000_init_mbx_params_pf(struct e1000_hw *hw) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - - switch (hw->mac.type) { - case e1000_82576: - case e1000_i350: - case e1000_i354: - mbx->timeout = 0; - mbx->usec_delay = 0; - - mbx->size = E1000_VFMAILBOX_SIZE; - - mbx->ops.read = e1000_read_mbx_pf; - mbx->ops.write = e1000_write_mbx_pf; - mbx->ops.read_posted = e1000_read_posted_mbx; - mbx->ops.write_posted = e1000_write_posted_mbx; - mbx->ops.check_for_msg = e1000_check_for_msg_pf; - mbx->ops.check_for_ack = e1000_check_for_ack_pf; - mbx->ops.check_for_rst = e1000_check_for_rst_pf; - - mbx->stats.msgs_tx = 0; - mbx->stats.msgs_rx = 0; - mbx->stats.reqs = 0; - mbx->stats.acks = 0; - mbx->stats.rsts = 0; - default: - return E1000_SUCCESS; - } -} - |