devices/igb/e1000_mbx-3.18-ethercat.c
author Edouard Tisserant <edouard.tisserant@gmail.com>
Wed, 12 Sep 2018 21:22:46 +0200
branchstable-1.5
changeset 2708 742c70a97622
parent 2685 740291442c05
permissions -rw-r--r--
Fix C/C++ linking problem in tool/ethercat
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/* Intel(R) Gigabit Ethernet Linux driver
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 * Copyright(c) 2007-2014 Intel Corporation.
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 *
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 * This program is free software; you can redistribute it and/or modify it
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 * under the terms and conditions of the GNU General Public License,
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 * version 2, as published by the Free Software Foundation.
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 *
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 * This program is distributed in the hope it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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 * more details.
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 *
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 * You should have received a copy of the GNU General Public License along with
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 * this program; if not, see <http://www.gnu.org/licenses/>.
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 *
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 * The full GNU General Public License is included in this distribution in
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 * the file called "COPYING".
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 *
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 * Contact Information:
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 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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 */
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#include "e1000_mbx-3.18-ethercat.h"
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/**
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 *  igb_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 successfully read message from buffer
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 **/
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s32 igb_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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	/* 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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 *  igb_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 igb_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 = 0;
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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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 *  igb_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 igb_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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	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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 *  igb_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 igb_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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	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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 *  igb_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 igb_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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	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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 *  igb_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
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   133
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   134
static s32 igb_poll_for_msg(struct e1000_hw *hw, u16 mbx_id)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   135
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   136
	struct e1000_mbx_info *mbx = &hw->mbx;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   137
	int countdown = mbx->timeout;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   138
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   139
	if (!countdown || !mbx->ops.check_for_msg)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
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parents:
diff changeset
   140
		goto out;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   141
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   142
	while (countdown && mbx->ops.check_for_msg(hw, mbx_id)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   143
		countdown--;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   144
		if (!countdown)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   145
			break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   146
		udelay(mbx->usec_delay);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   147
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   148
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   149
	/* if we failed, all future posted messages fail until reset */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   150
	if (!countdown)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   151
		mbx->timeout = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   152
out:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   153
	return countdown ? 0 : -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   154
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   155
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   156
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   157
 *  igb_poll_for_ack - Wait for message acknowledgement
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   158
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   159
 *  @mbx_id: id of mailbox to write
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   160
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   161
 *  returns SUCCESS if it successfully received a message acknowledgement
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   162
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   163
static s32 igb_poll_for_ack(struct e1000_hw *hw, u16 mbx_id)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   164
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   165
	struct e1000_mbx_info *mbx = &hw->mbx;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   166
	int countdown = mbx->timeout;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   167
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   168
	if (!countdown || !mbx->ops.check_for_ack)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   169
		goto out;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   170
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   171
	while (countdown && mbx->ops.check_for_ack(hw, mbx_id)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   172
		countdown--;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   173
		if (!countdown)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   174
			break;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   175
		udelay(mbx->usec_delay);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   176
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   177
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   178
	/* if we failed, all future posted messages fail until reset */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   179
	if (!countdown)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   180
		mbx->timeout = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   181
out:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   182
	return countdown ? 0 : -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   183
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   184
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   185
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   186
 *  igb_read_posted_mbx - Wait for message notification and receive message
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   187
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   188
 *  @msg: The message buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   189
 *  @size: Length of buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   190
 *  @mbx_id: id of mailbox to write
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   191
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   192
 *  returns SUCCESS if it successfully received a message notification and
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   193
 *  copied it into the receive buffer.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   194
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   195
static s32 igb_read_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   196
			       u16 mbx_id)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   197
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   198
	struct e1000_mbx_info *mbx = &hw->mbx;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   199
	s32 ret_val = -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   200
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   201
	if (!mbx->ops.read)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   202
		goto out;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   203
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   204
	ret_val = igb_poll_for_msg(hw, mbx_id);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   205
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   206
	if (!ret_val)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   207
		ret_val = mbx->ops.read(hw, msg, size, mbx_id);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   208
out:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   209
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   210
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   211
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   212
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   213
 *  igb_write_posted_mbx - Write a message to the mailbox, wait for ack
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   214
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   215
 *  @msg: The message buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   216
 *  @size: Length of buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   217
 *  @mbx_id: id of mailbox to write
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   218
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   219
 *  returns SUCCESS if it successfully copied message into the buffer and
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   220
 *  received an ack to that message within delay * timeout period
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   221
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   222
static s32 igb_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   223
				u16 mbx_id)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   224
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   225
	struct e1000_mbx_info *mbx = &hw->mbx;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   226
	s32 ret_val = -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   227
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   228
	/* exit if either we can't write or there isn't a defined timeout */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   229
	if (!mbx->ops.write || !mbx->timeout)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   230
		goto out;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   231
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   232
	/* send msg */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   233
	ret_val = mbx->ops.write(hw, msg, size, mbx_id);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   234
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   235
	/* if msg sent wait until we receive an ack */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   236
	if (!ret_val)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   237
		ret_val = igb_poll_for_ack(hw, mbx_id);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   238
out:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   239
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   240
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   241
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   242
static s32 igb_check_for_bit_pf(struct e1000_hw *hw, u32 mask)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   243
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   244
	u32 mbvficr = rd32(E1000_MBVFICR);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   245
	s32 ret_val = -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   246
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   247
	if (mbvficr & mask) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   248
		ret_val = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   249
		wr32(E1000_MBVFICR, mask);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   250
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   251
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   252
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   253
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   254
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   255
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   256
 *  igb_check_for_msg_pf - checks to see if the VF has sent mail
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   257
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   258
 *  @vf_number: the VF index
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   259
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   260
 *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   261
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   262
static s32 igb_check_for_msg_pf(struct e1000_hw *hw, u16 vf_number)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   263
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   264
	s32 ret_val = -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   265
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   266
	if (!igb_check_for_bit_pf(hw, E1000_MBVFICR_VFREQ_VF1 << vf_number)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   267
		ret_val = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   268
		hw->mbx.stats.reqs++;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   269
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   270
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   271
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   272
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   273
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   274
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   275
 *  igb_check_for_ack_pf - checks to see if the VF has ACKed
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   276
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   277
 *  @vf_number: the VF index
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   278
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   279
 *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   280
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   281
static s32 igb_check_for_ack_pf(struct e1000_hw *hw, u16 vf_number)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   282
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   283
	s32 ret_val = -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   284
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   285
	if (!igb_check_for_bit_pf(hw, E1000_MBVFICR_VFACK_VF1 << vf_number)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   286
		ret_val = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   287
		hw->mbx.stats.acks++;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   288
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   289
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   290
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   291
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   292
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   293
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   294
 *  igb_check_for_rst_pf - checks to see if the VF has reset
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   295
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   296
 *  @vf_number: the VF index
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   297
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   298
 *  returns SUCCESS if the VF has set the Status bit or else ERR_MBX
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   299
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   300
static s32 igb_check_for_rst_pf(struct e1000_hw *hw, u16 vf_number)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   301
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   302
	u32 vflre = rd32(E1000_VFLRE);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   303
	s32 ret_val = -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   304
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   305
	if (vflre & (1 << vf_number)) {
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   306
		ret_val = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   307
		wr32(E1000_VFLRE, (1 << vf_number));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   308
		hw->mbx.stats.rsts++;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   309
	}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   310
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   311
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   312
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   313
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   314
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   315
 *  igb_obtain_mbx_lock_pf - obtain mailbox lock
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   316
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   317
 *  @vf_number: the VF index
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   318
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   319
 *  return SUCCESS if we obtained the mailbox lock
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   320
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   321
static s32 igb_obtain_mbx_lock_pf(struct e1000_hw *hw, u16 vf_number)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   322
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   323
	s32 ret_val = -E1000_ERR_MBX;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   324
	u32 p2v_mailbox;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   325
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   326
	/* Take ownership of the buffer */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   327
	wr32(E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_PFU);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   328
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   329
	/* reserve mailbox for vf use */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   330
	p2v_mailbox = rd32(E1000_P2VMAILBOX(vf_number));
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   331
	if (p2v_mailbox & E1000_P2VMAILBOX_PFU)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   332
		ret_val = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   333
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   334
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   335
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   336
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   337
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   338
 *  igb_write_mbx_pf - Places a message in the mailbox
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   339
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   340
 *  @msg: The message buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   341
 *  @size: Length of buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   342
 *  @vf_number: the VF index
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   343
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   344
 *  returns SUCCESS if it successfully copied message into the buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   345
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   346
static s32 igb_write_mbx_pf(struct e1000_hw *hw, u32 *msg, u16 size,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   347
			    u16 vf_number)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   348
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   349
	s32 ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   350
	u16 i;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   351
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   352
	/* lock the mailbox to prevent pf/vf race condition */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   353
	ret_val = igb_obtain_mbx_lock_pf(hw, vf_number);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   354
	if (ret_val)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   355
		goto out_no_write;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   356
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   357
	/* flush msg and acks as we are overwriting the message buffer */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   358
	igb_check_for_msg_pf(hw, vf_number);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   359
	igb_check_for_ack_pf(hw, vf_number);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   360
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   361
	/* copy the caller specified message to the mailbox memory buffer */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   362
	for (i = 0; i < size; i++)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   363
		array_wr32(E1000_VMBMEM(vf_number), i, msg[i]);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   364
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   365
	/* Interrupt VF to tell it a message has been sent and release buffer*/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   366
	wr32(E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_STS);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   367
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   368
	/* update stats */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   369
	hw->mbx.stats.msgs_tx++;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   370
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   371
out_no_write:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   372
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   373
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   374
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   375
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   376
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   377
 *  igb_read_mbx_pf - Read a message from the mailbox
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   378
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   379
 *  @msg: The message buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   380
 *  @size: Length of buffer
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   381
 *  @vf_number: the VF index
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   382
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   383
 *  This function copies a message from the mailbox buffer to the caller's
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   384
 *  memory buffer.  The presumption is that the caller knows that there was
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   385
 *  a message due to a VF request so no polling for message is needed.
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   386
 **/
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   387
static s32 igb_read_mbx_pf(struct e1000_hw *hw, u32 *msg, u16 size,
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   388
			   u16 vf_number)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   389
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   390
	s32 ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   391
	u16 i;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   392
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   393
	/* lock the mailbox to prevent pf/vf race condition */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   394
	ret_val = igb_obtain_mbx_lock_pf(hw, vf_number);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   395
	if (ret_val)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   396
		goto out_no_read;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   397
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   398
	/* copy the message to the mailbox memory buffer */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   399
	for (i = 0; i < size; i++)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   400
		msg[i] = array_rd32(E1000_VMBMEM(vf_number), i);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   401
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   402
	/* Acknowledge the message and release buffer */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   403
	wr32(E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_ACK);
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   404
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   405
	/* update stats */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   406
	hw->mbx.stats.msgs_rx++;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   407
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   408
out_no_read:
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   409
	return ret_val;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   410
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   411
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   412
/**
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   413
 *  e1000_init_mbx_params_pf - set initial values for pf mailbox
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   414
 *  @hw: pointer to the HW structure
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   415
 *
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   416
 *  Initializes the hw->mbx struct to correct values for pf mailbox
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   417
 */
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   418
s32 igb_init_mbx_params_pf(struct e1000_hw *hw)
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   419
{
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   420
	struct e1000_mbx_info *mbx = &hw->mbx;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   421
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   422
	mbx->timeout = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   423
	mbx->usec_delay = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   424
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   425
	mbx->size = E1000_VFMAILBOX_SIZE;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   426
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   427
	mbx->ops.read = igb_read_mbx_pf;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   428
	mbx->ops.write = igb_write_mbx_pf;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   429
	mbx->ops.read_posted = igb_read_posted_mbx;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   430
	mbx->ops.write_posted = igb_write_posted_mbx;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   431
	mbx->ops.check_for_msg = igb_check_for_msg_pf;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   432
	mbx->ops.check_for_ack = igb_check_for_ack_pf;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   433
	mbx->ops.check_for_rst = igb_check_for_rst_pf;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   434
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   435
	mbx->stats.msgs_tx = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   436
	mbx->stats.msgs_rx = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   437
	mbx->stats.reqs = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   438
	mbx->stats.acks = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   439
	mbx->stats.rsts = 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   440
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   441
	return 0;
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   442
}
740291442c05 Added clean igb driver from kernel 3.18 (no EtherCAT yet).
Florian Pose <fp@igh.de>
parents:
diff changeset
   443