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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-04-07 07:42:33 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-10 20:03:27 -0700
commitdee1ad47f2ee75f5146d83ca757c1b7861c34c3b (patch)
tree47cbdefe3d0f9b729724e378ad6a96eaddfd5fbc /drivers/net/igbvf/mbx.c
parentf7917c009c28c941ba151ee66f04dc7f6a2e1e0b (diff)
downloadlinux-dee1ad47f2ee75f5146d83ca757c1b7861c34c3b.tar.bz2
intel: Move the Intel wired LAN drivers
Moves the Intel wired LAN drivers into drivers/net/ethernet/intel/ and the necessary Kconfig and Makefile changes. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/igbvf/mbx.c')
-rw-r--r--drivers/net/igbvf/mbx.c350
1 files changed, 0 insertions, 350 deletions
diff --git a/drivers/net/igbvf/mbx.c b/drivers/net/igbvf/mbx.c
deleted file mode 100644
index 3d6f4cc3998a..000000000000
--- a/drivers/net/igbvf/mbx.c
+++ /dev/null
@@ -1,350 +0,0 @@
-/*******************************************************************************
-
- Intel(R) 82576 Virtual Function Linux driver
- Copyright(c) 2009 - 2010 Intel Corporation.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms and conditions of the GNU General Public License,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
-
- Contact Information:
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-#include "mbx.h"
-
-/**
- * e1000_poll_for_msg - Wait for message notification
- * @hw: pointer to the HW structure
- *
- * returns SUCCESS if it successfully received a message notification
- **/
-static s32 e1000_poll_for_msg(struct e1000_hw *hw)
-{
- struct e1000_mbx_info *mbx = &hw->mbx;
- int countdown = mbx->timeout;
-
- if (!mbx->ops.check_for_msg)
- goto out;
-
- while (countdown && mbx->ops.check_for_msg(hw)) {
- countdown--;
- udelay(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
- *
- * returns SUCCESS if it successfully received a message acknowledgement
- **/
-static s32 e1000_poll_for_ack(struct e1000_hw *hw)
-{
- struct e1000_mbx_info *mbx = &hw->mbx;
- int countdown = mbx->timeout;
-
- if (!mbx->ops.check_for_ack)
- goto out;
-
- while (countdown && mbx->ops.check_for_ack(hw)) {
- countdown--;
- udelay(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
- *
- * returns SUCCESS if it successfully received a message notification and
- * copied it into the receive buffer.
- **/
-static s32 e1000_read_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size)
-{
- struct e1000_mbx_info *mbx = &hw->mbx;
- s32 ret_val = -E1000_ERR_MBX;
-
- if (!mbx->ops.read)
- goto out;
-
- ret_val = e1000_poll_for_msg(hw);
-
- /* if ack received read message, otherwise we timed out */
- if (!ret_val)
- ret_val = mbx->ops.read(hw, msg, size);
-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
- *
- * returns SUCCESS if it successfully copied message into the buffer and
- * received an ack to that message within delay * timeout period
- **/
-static s32 e1000_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size)
-{
- struct e1000_mbx_info *mbx = &hw->mbx;
- s32 ret_val = -E1000_ERR_MBX;
-
- /* exit if we either 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);
-
- /* if msg sent wait until we receive an ack */
- if (!ret_val)
- ret_val = e1000_poll_for_ack(hw);
-out:
- return ret_val;
-}
-
-/**
- * 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 = er32(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
- *
- * 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)
-{
- s32 ret_val = -E1000_ERR_MBX;
-
- 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
- *
- * 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)
-{
- s32 ret_val = -E1000_ERR_MBX;
-
- 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
- *
- * 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)
-{
- s32 ret_val = -E1000_ERR_MBX;
-
- 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;
-
- /* Take ownership of the buffer */
- ew32(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
- *
- * returns SUCCESS if it successfully copied message into the buffer
- **/
-static s32 e1000_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size)
-{
- s32 err;
- u16 i;
-
- /* lock the mailbox to prevent pf/vf race condition */
- err = e1000_obtain_mbx_lock_vf(hw);
- if (err)
- goto out_no_write;
-
- /* flush any ack or msg as we are going to overwrite mailbox */
- e1000_check_for_ack_vf(hw);
- e1000_check_for_msg_vf(hw);
-
- /* copy the caller specified message to the mailbox memory buffer */
- for (i = 0; i < size; i++)
- array_ew32(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 */
- ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_REQ);
-
-out_no_write:
- return err;
-}
-
-/**
- * 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
- *
- * returns SUCCESS if it successfuly read message from buffer
- **/
-static s32 e1000_read_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size)
-{
- s32 err;
- u16 i;
-
- /* lock the mailbox to prevent pf/vf race condition */
- err = e1000_obtain_mbx_lock_vf(hw);
- if (err)
- goto out_no_read;
-
- /* copy the message from the mailbox memory buffer */
- for (i = 0; i < size; i++)
- msg[i] = array_er32(VMBMEM(0), i);
-
- /* Acknowledge receipt and release mailbox, then we're done */
- ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_ACK);
-
- /* update stats */
- hw->mbx.stats.msgs_rx++;
-
-out_no_read:
- return err;
-}
-
-/**
- * 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 being 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;
-}
-