mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
b827058579
the core changes but left out the shared code, lol. Well, and a couple fixes to the core... hopefully this will all be complete now. Happy happy joy joy :)
763 lines
20 KiB
C
763 lines
20 KiB
C
/******************************************************************************
|
|
|
|
Copyright (c) 2001-2010, Intel Corporation
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
3. Neither the name of the Intel Corporation nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
******************************************************************************/
|
|
/*$FreeBSD$*/
|
|
|
|
#include "e1000_mbx.h"
|
|
|
|
/**
|
|
* e1000_null_mbx_check_for_flag - No-op function, return 0
|
|
* @hw: pointer to the HW structure
|
|
**/
|
|
static s32 e1000_null_mbx_check_for_flag(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
DEBUGFUNC("e1000_null_mbx_check_flag");
|
|
|
|
return E1000_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* e1000_null_mbx_transact - No-op function, return 0
|
|
* @hw: pointer to the HW structure
|
|
**/
|
|
static s32 e1000_null_mbx_transact(struct e1000_hw *hw, u32 *msg, u16 size,
|
|
u16 mbx_id)
|
|
{
|
|
DEBUGFUNC("e1000_null_mbx_rw_msg");
|
|
|
|
return E1000_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* e1000_read_mbx - Reads a message from the mailbox
|
|
* @hw: pointer to the HW structure
|
|
* @msg: The message buffer
|
|
* @size: Length of buffer
|
|
* @mbx_id: id of mailbox to read
|
|
*
|
|
* returns SUCCESS if it successfuly read message from buffer
|
|
**/
|
|
s32 e1000_read_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_read_mbx");
|
|
|
|
/* limit read to size of mailbox */
|
|
if (size > mbx->size)
|
|
size = mbx->size;
|
|
|
|
if (mbx->ops.read)
|
|
ret_val = mbx->ops.read(hw, msg, size, mbx_id);
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_write_mbx - Write a message to the mailbox
|
|
* @hw: pointer to the HW structure
|
|
* @msg: The message buffer
|
|
* @size: Length of buffer
|
|
* @mbx_id: id of mailbox to write
|
|
*
|
|
* returns SUCCESS if it successfully copied message into the buffer
|
|
**/
|
|
s32 e1000_write_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
s32 ret_val = E1000_SUCCESS;
|
|
|
|
DEBUGFUNC("e1000_write_mbx");
|
|
|
|
if (size > mbx->size)
|
|
ret_val = -E1000_ERR_MBX;
|
|
|
|
else if (mbx->ops.write)
|
|
ret_val = mbx->ops.write(hw, msg, size, mbx_id);
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_for_msg - checks to see if someone sent us mail
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to check
|
|
*
|
|
* returns SUCCESS if the Status bit was found or else ERR_MBX
|
|
**/
|
|
s32 e1000_check_for_msg(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_check_for_msg");
|
|
|
|
if (mbx->ops.check_for_msg)
|
|
ret_val = mbx->ops.check_for_msg(hw, mbx_id);
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_for_ack - checks to see if someone sent us ACK
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to check
|
|
*
|
|
* returns SUCCESS if the Status bit was found or else ERR_MBX
|
|
**/
|
|
s32 e1000_check_for_ack(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_check_for_ack");
|
|
|
|
if (mbx->ops.check_for_ack)
|
|
ret_val = mbx->ops.check_for_ack(hw, mbx_id);
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_for_rst - checks to see if other side has reset
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to check
|
|
*
|
|
* returns SUCCESS if the Status bit was found or else ERR_MBX
|
|
**/
|
|
s32 e1000_check_for_rst(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_check_for_rst");
|
|
|
|
if (mbx->ops.check_for_rst)
|
|
ret_val = mbx->ops.check_for_rst(hw, mbx_id);
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_poll_for_msg - Wait for message notification
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to write
|
|
*
|
|
* returns SUCCESS if it successfully received a message notification
|
|
**/
|
|
static s32 e1000_poll_for_msg(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
int countdown = mbx->timeout;
|
|
|
|
DEBUGFUNC("e1000_poll_for_msg");
|
|
|
|
if (!countdown || !mbx->ops.check_for_msg)
|
|
goto out;
|
|
|
|
while (countdown && mbx->ops.check_for_msg(hw, mbx_id)) {
|
|
countdown--;
|
|
if (!countdown)
|
|
break;
|
|
usec_delay(mbx->usec_delay);
|
|
}
|
|
|
|
/* if we failed, all future posted messages fail until reset */
|
|
if (!countdown)
|
|
mbx->timeout = 0;
|
|
out:
|
|
return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
|
|
}
|
|
|
|
/**
|
|
* e1000_poll_for_ack - Wait for message acknowledgement
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to write
|
|
*
|
|
* returns SUCCESS if it successfully received a message acknowledgement
|
|
**/
|
|
static s32 e1000_poll_for_ack(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
int countdown = mbx->timeout;
|
|
|
|
DEBUGFUNC("e1000_poll_for_ack");
|
|
|
|
if (!countdown || !mbx->ops.check_for_ack)
|
|
goto out;
|
|
|
|
while (countdown && mbx->ops.check_for_ack(hw, mbx_id)) {
|
|
countdown--;
|
|
if (!countdown)
|
|
break;
|
|
usec_delay(mbx->usec_delay);
|
|
}
|
|
|
|
/* if we failed, all future posted messages fail until reset */
|
|
if (!countdown)
|
|
mbx->timeout = 0;
|
|
out:
|
|
return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
|
|
}
|
|
|
|
/**
|
|
* e1000_read_posted_mbx - Wait for message notification and receive message
|
|
* @hw: pointer to the HW structure
|
|
* @msg: The message buffer
|
|
* @size: Length of buffer
|
|
* @mbx_id: id of mailbox to write
|
|
*
|
|
* returns SUCCESS if it successfully received a message notification and
|
|
* copied it into the receive buffer.
|
|
**/
|
|
s32 e1000_read_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_read_posted_mbx");
|
|
|
|
if (!mbx->ops.read)
|
|
goto out;
|
|
|
|
ret_val = e1000_poll_for_msg(hw, mbx_id);
|
|
|
|
/* if ack received read message, otherwise we timed out */
|
|
if (!ret_val)
|
|
ret_val = mbx->ops.read(hw, msg, size, mbx_id);
|
|
out:
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_write_posted_mbx - Write a message to the mailbox, wait for ack
|
|
* @hw: pointer to the HW structure
|
|
* @msg: The message buffer
|
|
* @size: Length of buffer
|
|
* @mbx_id: id of mailbox to write
|
|
*
|
|
* returns SUCCESS if it successfully copied message into the buffer and
|
|
* received an ack to that message within delay * timeout period
|
|
**/
|
|
s32 e1000_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_write_posted_mbx");
|
|
|
|
/* exit if either we can't write or there isn't a defined timeout */
|
|
if (!mbx->ops.write || !mbx->timeout)
|
|
goto out;
|
|
|
|
/* send msg */
|
|
ret_val = mbx->ops.write(hw, msg, size, mbx_id);
|
|
|
|
/* if msg sent wait until we receive an ack */
|
|
if (!ret_val)
|
|
ret_val = e1000_poll_for_ack(hw, mbx_id);
|
|
out:
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_init_mbx_ops_generic - Initialize mbx function pointers
|
|
* @hw: pointer to the HW structure
|
|
*
|
|
* Sets the function pointers to no-op functions
|
|
**/
|
|
void e1000_init_mbx_ops_generic(struct e1000_hw *hw)
|
|
{
|
|
struct e1000_mbx_info *mbx = &hw->mbx;
|
|
mbx->ops.init_params = e1000_null_ops_generic;
|
|
mbx->ops.read = e1000_null_mbx_transact;
|
|
mbx->ops.write = e1000_null_mbx_transact;
|
|
mbx->ops.check_for_msg = e1000_null_mbx_check_for_flag;
|
|
mbx->ops.check_for_ack = e1000_null_mbx_check_for_flag;
|
|
mbx->ops.check_for_rst = e1000_null_mbx_check_for_flag;
|
|
mbx->ops.read_posted = e1000_read_posted_mbx;
|
|
mbx->ops.write_posted = e1000_write_posted_mbx;
|
|
}
|
|
|
|
/**
|
|
* e1000_read_v2p_mailbox - read v2p mailbox
|
|
* @hw: pointer to the HW structure
|
|
*
|
|
* This function is used to read the v2p mailbox without losing the read to
|
|
* clear status bits.
|
|
**/
|
|
static u32 e1000_read_v2p_mailbox(struct e1000_hw *hw)
|
|
{
|
|
u32 v2p_mailbox = E1000_READ_REG(hw, E1000_V2PMAILBOX(0));
|
|
|
|
v2p_mailbox |= hw->dev_spec.vf.v2p_mailbox;
|
|
hw->dev_spec.vf.v2p_mailbox |= v2p_mailbox & E1000_V2PMAILBOX_R2C_BITS;
|
|
|
|
return v2p_mailbox;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_for_bit_vf - Determine if a status bit was set
|
|
* @hw: pointer to the HW structure
|
|
* @mask: bitmask for bits to be tested and cleared
|
|
*
|
|
* This function is used to check for the read to clear bits within
|
|
* the V2P mailbox.
|
|
**/
|
|
static s32 e1000_check_for_bit_vf(struct e1000_hw *hw, u32 mask)
|
|
{
|
|
u32 v2p_mailbox = e1000_read_v2p_mailbox(hw);
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
if (v2p_mailbox & mask)
|
|
ret_val = E1000_SUCCESS;
|
|
|
|
hw->dev_spec.vf.v2p_mailbox &= ~mask;
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_for_msg_vf - checks to see if the PF has sent mail
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to check
|
|
*
|
|
* returns SUCCESS if the PF has set the Status bit or else ERR_MBX
|
|
**/
|
|
static s32 e1000_check_for_msg_vf(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_check_for_msg_vf");
|
|
|
|
if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFSTS)) {
|
|
ret_val = E1000_SUCCESS;
|
|
hw->mbx.stats.reqs++;
|
|
}
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_for_ack_vf - checks to see if the PF has ACK'd
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to check
|
|
*
|
|
* returns SUCCESS if the PF has set the ACK bit or else ERR_MBX
|
|
**/
|
|
static s32 e1000_check_for_ack_vf(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_check_for_ack_vf");
|
|
|
|
if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFACK)) {
|
|
ret_val = E1000_SUCCESS;
|
|
hw->mbx.stats.acks++;
|
|
}
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_for_rst_vf - checks to see if the PF has reset
|
|
* @hw: pointer to the HW structure
|
|
* @mbx_id: id of mailbox to check
|
|
*
|
|
* returns TRUE if the PF has set the reset done bit or else FALSE
|
|
**/
|
|
static s32 e1000_check_for_rst_vf(struct e1000_hw *hw, u16 mbx_id)
|
|
{
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_check_for_rst_vf");
|
|
|
|
if (!e1000_check_for_bit_vf(hw, (E1000_V2PMAILBOX_RSTD |
|
|
E1000_V2PMAILBOX_RSTI))) {
|
|
ret_val = E1000_SUCCESS;
|
|
hw->mbx.stats.rsts++;
|
|
}
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_obtain_mbx_lock_vf - obtain mailbox lock
|
|
* @hw: pointer to the HW structure
|
|
*
|
|
* return SUCCESS if we obtained the mailbox lock
|
|
**/
|
|
static s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw)
|
|
{
|
|
s32 ret_val = -E1000_ERR_MBX;
|
|
|
|
DEBUGFUNC("e1000_obtain_mbx_lock_vf");
|
|
|
|
/* Take ownership of the buffer */
|
|
E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_VFU);
|
|
|
|
/* reserve mailbox for vf use */
|
|
if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU)
|
|
ret_val = E1000_SUCCESS;
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_write_mbx_vf - Write a message to the mailbox
|
|
* @hw: pointer to the HW structure
|
|
* @msg: The message buffer
|
|
* @size: Length of buffer
|
|
* @mbx_id: id of mailbox to write
|
|
*
|
|
* returns SUCCESS if it successfully copied message into the buffer
|
|
**/
|
|
static s32 e1000_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size,
|
|
u16 mbx_id)
|
|
{
|
|
s32 ret_val;
|
|
u16 i;
|
|
|
|
|
|
DEBUGFUNC("e1000_write_mbx_vf");
|
|
|
|
/* lock the mailbox to prevent pf/vf race condition */
|
|
ret_val = e1000_obtain_mbx_lock_vf(hw);
|
|
if (ret_val)
|
|
goto out_no_write;
|
|
|
|
/* flush msg and acks as we are overwriting the message buffer */
|
|
e1000_check_for_msg_vf(hw, 0);
|
|
e1000_check_for_ack_vf(hw, 0);
|
|
|
|
/* copy the caller specified message to the mailbox memory buffer */
|
|
for (i = 0; i < size; i++)
|
|
E1000_WRITE_REG_ARRAY(hw, E1000_VMBMEM(0), i, msg[i]);
|
|
|
|
/* update stats */
|
|
hw->mbx.stats.msgs_tx++;
|
|
|
|
/* Drop VFU and interrupt the PF to tell it a message has been sent */
|
|
E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_REQ);
|
|
|
|
out_no_write:
|
|
return ret_val;
|
|
}
|
|
|
|
/**
|
|
* e1000_read_mbx_vf - Reads a message from the inbox intended for vf
|
|
* @hw: pointer to the HW structure
|
|
* @msg: The message buffer
|
|
* @size: Length of buffer
|
|
* @mbx_id: id of mailbox to read
|
|
*
|
|
* returns SUCCESS if it successfuly read message from buffer
|
|
**/
|
|
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;
|
|
|
|
if (hw->mac.type == e1000_82576) {
|
|
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;
|
|
}
|
|
|
|
return E1000_SUCCESS;
|
|
}
|
|
|