f0ecc46d04
- this also includes virtualization support on these devices Correct some vlan issues we were seeing in test, jumbo frames on vlans did not work correctly, this was all due to confused logic around HW filters, the new code should now work for all uses. Important fix: when mbuf resources are depeleted, it was possible to completely empty the RX ring, and then the RX engine would stall forever. This is fixed by a flag being set whenever the refresh code fails due to an mbuf shortage, also the local timer now makes sure that all queues get an interrupt when it runs, the interrupt code will then always call rxeof, and in that routine the first thing done is now to check the refresh flag and call refresh_mbufs. This has been verified to fix this type 'hang'. Similar code will follow in the other drivers. Finally, sync up shared code for the I350 support. Thanks to everyone that has been reporting issues, and helping in the debug/test process!!
765 lines
20 KiB
C
765 lines
20 KiB
C
/******************************************************************************
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Copyright (c) 2001-2010, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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******************************************************************************/
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/*$FreeBSD$*/
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#include "e1000_mbx.h"
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/**
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* e1000_null_mbx_check_for_flag - No-op function, return 0
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* @hw: pointer to the HW structure
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**/
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static s32 e1000_null_mbx_check_for_flag(struct e1000_hw *hw, u16 mbx_id)
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{
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DEBUGFUNC("e1000_null_mbx_check_flag");
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return E1000_SUCCESS;
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}
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/**
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* e1000_null_mbx_transact - No-op function, return 0
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* @hw: pointer to the HW structure
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**/
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static s32 e1000_null_mbx_transact(struct e1000_hw *hw, u32 *msg, u16 size,
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u16 mbx_id)
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{
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DEBUGFUNC("e1000_null_mbx_rw_msg");
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return E1000_SUCCESS;
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}
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/**
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* e1000_read_mbx - Reads a message from the mailbox
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* @hw: pointer to the HW structure
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* @msg: The message buffer
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* @size: Length of buffer
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* @mbx_id: id of mailbox to read
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*
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* returns SUCCESS if it successfuly read message from buffer
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**/
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s32 e1000_read_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_read_mbx");
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/* limit read to size of mailbox */
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if (size > mbx->size)
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size = mbx->size;
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if (mbx->ops.read)
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ret_val = mbx->ops.read(hw, msg, size, mbx_id);
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return ret_val;
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}
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/**
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* e1000_write_mbx - Write a message to the mailbox
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* @hw: pointer to the HW structure
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* @msg: The message buffer
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* @size: Length of buffer
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* @mbx_id: id of mailbox to write
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*
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* returns SUCCESS if it successfully copied message into the buffer
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**/
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s32 e1000_write_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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s32 ret_val = E1000_SUCCESS;
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DEBUGFUNC("e1000_write_mbx");
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if (size > mbx->size)
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ret_val = -E1000_ERR_MBX;
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else if (mbx->ops.write)
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ret_val = mbx->ops.write(hw, msg, size, mbx_id);
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return ret_val;
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}
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/**
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* e1000_check_for_msg - checks to see if someone sent us mail
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to check
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*
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* returns SUCCESS if the Status bit was found or else ERR_MBX
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**/
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s32 e1000_check_for_msg(struct e1000_hw *hw, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_check_for_msg");
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if (mbx->ops.check_for_msg)
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ret_val = mbx->ops.check_for_msg(hw, mbx_id);
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return ret_val;
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}
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/**
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* e1000_check_for_ack - checks to see if someone sent us ACK
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to check
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*
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* returns SUCCESS if the Status bit was found or else ERR_MBX
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**/
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s32 e1000_check_for_ack(struct e1000_hw *hw, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_check_for_ack");
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if (mbx->ops.check_for_ack)
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ret_val = mbx->ops.check_for_ack(hw, mbx_id);
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return ret_val;
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}
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/**
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* e1000_check_for_rst - checks to see if other side has reset
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to check
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*
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* returns SUCCESS if the Status bit was found or else ERR_MBX
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**/
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s32 e1000_check_for_rst(struct e1000_hw *hw, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_check_for_rst");
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if (mbx->ops.check_for_rst)
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ret_val = mbx->ops.check_for_rst(hw, mbx_id);
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return ret_val;
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}
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/**
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* e1000_poll_for_msg - Wait for message notification
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to write
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*
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* returns SUCCESS if it successfully received a message notification
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**/
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static s32 e1000_poll_for_msg(struct e1000_hw *hw, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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int countdown = mbx->timeout;
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DEBUGFUNC("e1000_poll_for_msg");
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if (!countdown || !mbx->ops.check_for_msg)
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goto out;
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while (countdown && mbx->ops.check_for_msg(hw, mbx_id)) {
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countdown--;
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if (!countdown)
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break;
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usec_delay(mbx->usec_delay);
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}
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/* if we failed, all future posted messages fail until reset */
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if (!countdown)
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mbx->timeout = 0;
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out:
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return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
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}
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/**
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* e1000_poll_for_ack - Wait for message acknowledgement
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to write
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*
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* returns SUCCESS if it successfully received a message acknowledgement
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**/
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static s32 e1000_poll_for_ack(struct e1000_hw *hw, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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int countdown = mbx->timeout;
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DEBUGFUNC("e1000_poll_for_ack");
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if (!countdown || !mbx->ops.check_for_ack)
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goto out;
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while (countdown && mbx->ops.check_for_ack(hw, mbx_id)) {
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countdown--;
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if (!countdown)
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break;
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usec_delay(mbx->usec_delay);
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}
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/* if we failed, all future posted messages fail until reset */
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if (!countdown)
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mbx->timeout = 0;
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out:
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return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
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}
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/**
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* e1000_read_posted_mbx - Wait for message notification and receive message
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* @hw: pointer to the HW structure
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* @msg: The message buffer
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* @size: Length of buffer
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* @mbx_id: id of mailbox to write
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*
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* returns SUCCESS if it successfully received a message notification and
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* copied it into the receive buffer.
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**/
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s32 e1000_read_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_read_posted_mbx");
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if (!mbx->ops.read)
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goto out;
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ret_val = e1000_poll_for_msg(hw, mbx_id);
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/* if ack received read message, otherwise we timed out */
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if (!ret_val)
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ret_val = mbx->ops.read(hw, msg, size, mbx_id);
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out:
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return ret_val;
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}
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/**
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* e1000_write_posted_mbx - Write a message to the mailbox, wait for ack
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* @hw: pointer to the HW structure
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* @msg: The message buffer
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* @size: Length of buffer
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* @mbx_id: id of mailbox to write
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*
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* returns SUCCESS if it successfully copied message into the buffer and
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* received an ack to that message within delay * timeout period
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**/
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s32 e1000_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_write_posted_mbx");
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/* exit if either we can't write or there isn't a defined timeout */
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if (!mbx->ops.write || !mbx->timeout)
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goto out;
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/* send msg */
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ret_val = mbx->ops.write(hw, msg, size, mbx_id);
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/* if msg sent wait until we receive an ack */
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if (!ret_val)
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ret_val = e1000_poll_for_ack(hw, mbx_id);
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out:
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return ret_val;
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}
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/**
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* e1000_init_mbx_ops_generic - Initialize mbx function pointers
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* @hw: pointer to the HW structure
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*
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* Sets the function pointers to no-op functions
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**/
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void e1000_init_mbx_ops_generic(struct e1000_hw *hw)
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{
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struct e1000_mbx_info *mbx = &hw->mbx;
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mbx->ops.init_params = e1000_null_ops_generic;
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mbx->ops.read = e1000_null_mbx_transact;
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mbx->ops.write = e1000_null_mbx_transact;
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mbx->ops.check_for_msg = e1000_null_mbx_check_for_flag;
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mbx->ops.check_for_ack = e1000_null_mbx_check_for_flag;
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mbx->ops.check_for_rst = e1000_null_mbx_check_for_flag;
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mbx->ops.read_posted = e1000_read_posted_mbx;
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mbx->ops.write_posted = e1000_write_posted_mbx;
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}
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/**
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* e1000_read_v2p_mailbox - read v2p mailbox
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* @hw: pointer to the HW structure
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*
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* This function is used to read the v2p mailbox without losing the read to
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* clear status bits.
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**/
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static u32 e1000_read_v2p_mailbox(struct e1000_hw *hw)
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{
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u32 v2p_mailbox = E1000_READ_REG(hw, E1000_V2PMAILBOX(0));
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v2p_mailbox |= hw->dev_spec.vf.v2p_mailbox;
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hw->dev_spec.vf.v2p_mailbox |= v2p_mailbox & E1000_V2PMAILBOX_R2C_BITS;
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return v2p_mailbox;
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}
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/**
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* e1000_check_for_bit_vf - Determine if a status bit was set
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* @hw: pointer to the HW structure
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* @mask: bitmask for bits to be tested and cleared
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*
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* This function is used to check for the read to clear bits within
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* the V2P mailbox.
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**/
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static s32 e1000_check_for_bit_vf(struct e1000_hw *hw, u32 mask)
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{
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u32 v2p_mailbox = e1000_read_v2p_mailbox(hw);
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s32 ret_val = -E1000_ERR_MBX;
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if (v2p_mailbox & mask)
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ret_val = E1000_SUCCESS;
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hw->dev_spec.vf.v2p_mailbox &= ~mask;
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return ret_val;
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}
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/**
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* e1000_check_for_msg_vf - checks to see if the PF has sent mail
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to check
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*
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* returns SUCCESS if the PF has set the Status bit or else ERR_MBX
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**/
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static s32 e1000_check_for_msg_vf(struct e1000_hw *hw, u16 mbx_id)
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{
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_check_for_msg_vf");
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if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFSTS)) {
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ret_val = E1000_SUCCESS;
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hw->mbx.stats.reqs++;
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}
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return ret_val;
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}
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/**
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* e1000_check_for_ack_vf - checks to see if the PF has ACK'd
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to check
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*
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* returns SUCCESS if the PF has set the ACK bit or else ERR_MBX
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**/
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static s32 e1000_check_for_ack_vf(struct e1000_hw *hw, u16 mbx_id)
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{
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_check_for_ack_vf");
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if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFACK)) {
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ret_val = E1000_SUCCESS;
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hw->mbx.stats.acks++;
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}
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return ret_val;
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}
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/**
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* e1000_check_for_rst_vf - checks to see if the PF has reset
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* @hw: pointer to the HW structure
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* @mbx_id: id of mailbox to check
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*
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* returns TRUE if the PF has set the reset done bit or else FALSE
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**/
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static s32 e1000_check_for_rst_vf(struct e1000_hw *hw, u16 mbx_id)
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{
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_check_for_rst_vf");
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if (!e1000_check_for_bit_vf(hw, (E1000_V2PMAILBOX_RSTD |
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E1000_V2PMAILBOX_RSTI))) {
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ret_val = E1000_SUCCESS;
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hw->mbx.stats.rsts++;
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}
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return ret_val;
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}
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/**
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* e1000_obtain_mbx_lock_vf - obtain mailbox lock
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* @hw: pointer to the HW structure
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*
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* return SUCCESS if we obtained the mailbox lock
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**/
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static s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw)
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{
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s32 ret_val = -E1000_ERR_MBX;
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DEBUGFUNC("e1000_obtain_mbx_lock_vf");
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/* Take ownership of the buffer */
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E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_VFU);
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/* reserve mailbox for vf use */
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if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU)
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ret_val = E1000_SUCCESS;
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return ret_val;
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}
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/**
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* e1000_write_mbx_vf - Write a message to the mailbox
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* @hw: pointer to the HW structure
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* @msg: The message buffer
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* @size: Length of buffer
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* @mbx_id: id of mailbox to write
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*
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* returns SUCCESS if it successfully copied message into the buffer
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**/
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static s32 e1000_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size,
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u16 mbx_id)
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{
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s32 ret_val;
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u16 i;
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DEBUGFUNC("e1000_write_mbx_vf");
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/* lock the mailbox to prevent pf/vf race condition */
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ret_val = e1000_obtain_mbx_lock_vf(hw);
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if (ret_val)
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goto out_no_write;
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/* flush msg and acks as we are overwriting the message buffer */
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e1000_check_for_msg_vf(hw, 0);
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e1000_check_for_ack_vf(hw, 0);
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/* copy the caller specified message to the mailbox memory buffer */
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for (i = 0; i < size; i++)
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E1000_WRITE_REG_ARRAY(hw, E1000_VMBMEM(0), i, msg[i]);
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/* update stats */
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hw->mbx.stats.msgs_tx++;
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/* Drop VFU and interrupt the PF to tell it a message has been sent */
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E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_REQ);
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out_no_write:
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return ret_val;
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}
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/**
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* e1000_read_mbx_vf - Reads a message from the inbox intended for vf
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* @hw: pointer to the HW structure
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* @msg: The message buffer
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* @size: Length of buffer
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* @mbx_id: id of mailbox to read
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*
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* returns SUCCESS if it successfuly read message from buffer
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**/
|
|
static s32 e1000_read_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size,
|
|
u16 mbx_id)
|
|
{
|
|
s32 ret_val = E1000_SUCCESS;
|
|
u16 i;
|
|
|
|
DEBUGFUNC("e1000_read_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_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:
|
|
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;
|
|
}
|
|
}
|
|
|