diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/igbvf/igbvf_mbx.c')
-rw-r--r-- | qemu/roms/ipxe/src/drivers/net/igbvf/igbvf_mbx.c | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/igbvf/igbvf_mbx.c b/qemu/roms/ipxe/src/drivers/net/igbvf/igbvf_mbx.c deleted file mode 100644 index 658093898..000000000 --- a/qemu/roms/ipxe/src/drivers/net/igbvf/igbvf_mbx.c +++ /dev/null @@ -1,404 +0,0 @@ -/******************************************************************************* - - Intel(R) 82576 Virtual Function Linux driver - Copyright(c) 1999 - 2008 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: - Linux NICS <linux.nics@intel.com> - e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> - Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - -*******************************************************************************/ - -FILE_LICENCE ( GPL2_ONLY ); - -#include "igbvf_mbx.h" - -/** - * igbvf_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 igbvf_poll_for_msg(struct e1000_hw *hw, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - int countdown = mbx->timeout; - - DEBUGFUNC("igbvf_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; -} - -/** - * igbvf_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 igbvf_poll_for_ack(struct e1000_hw *hw, u16 mbx_id) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - int countdown = mbx->timeout; - - DEBUGFUNC("igbvf_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; -} - -/** - * igbvf_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. - **/ -static s32 igbvf_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("igbvf_read_posted_mbx"); - - if (!mbx->ops.read) - goto out; - - ret_val = igbvf_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; -} - -/** - * igbvf_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 - **/ -static s32 igbvf_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("igbvf_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 = igbvf_poll_for_ack(hw, mbx_id); -out: - return ret_val; -} - -/** - * igbvf_init_mbx_ops_generic - Initialize NVM function pointers - * @hw: pointer to the HW structure - * - * Setups up the function pointers to no-op functions - **/ -void igbvf_init_mbx_ops_generic(struct e1000_hw *hw) -{ - struct e1000_mbx_info *mbx = &hw->mbx; - mbx->ops.read_posted = igbvf_read_posted_mbx; - mbx->ops.write_posted = igbvf_write_posted_mbx; -} - -/** - * igbvf_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 igbvf_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; -} - -/** - * igbvf_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 igbvf_check_for_bit_vf(struct e1000_hw *hw, u32 mask) -{ - u32 v2p_mailbox = igbvf_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; -} - -/** - * igbvf_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 igbvf_check_for_msg_vf(struct e1000_hw *hw, u16 mbx_id __unused) -{ - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("igbvf_check_for_msg_vf"); - - if (!igbvf_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFSTS)) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.reqs++; - } - - return ret_val; -} - -/** - * igbvf_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 igbvf_check_for_ack_vf(struct e1000_hw *hw, u16 mbx_id __unused) -{ - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("igbvf_check_for_ack_vf"); - - if (!igbvf_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFACK)) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.acks++; - } - - return ret_val; -} - -/** - * igbvf_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 igbvf_check_for_rst_vf(struct e1000_hw *hw, u16 mbx_id __unused) -{ - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("igbvf_check_for_rst_vf"); - - if (!igbvf_check_for_bit_vf(hw, (E1000_V2PMAILBOX_RSTD | - E1000_V2PMAILBOX_RSTI))) { - ret_val = E1000_SUCCESS; - hw->mbx.stats.rsts++; - } - - return ret_val; -} - -/** - * igbvf_obtain_mbx_lock_vf - obtain mailbox lock - * @hw: pointer to the HW structure - * - * return SUCCESS if we obtained the mailbox lock - **/ -static s32 igbvf_obtain_mbx_lock_vf(struct e1000_hw *hw) -{ - s32 ret_val = -E1000_ERR_MBX; - - DEBUGFUNC("igbvf_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 (igbvf_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU) - ret_val = E1000_SUCCESS; - - return ret_val; -} - -/** - * igbvf_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 igbvf_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size, - u16 mbx_id __unused) -{ - s32 ret_val; - u16 i; - - - DEBUGFUNC("igbvf_write_mbx_vf"); - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = igbvf_obtain_mbx_lock_vf(hw); - if (ret_val) - goto out_no_write; - - /* flush msg and acks as we are overwriting the message buffer */ - igbvf_check_for_msg_vf(hw, 0); - igbvf_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; -} - -/** - * igbvf_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 igbvf_read_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size, - u16 mbx_id __unused) -{ - s32 ret_val = E1000_SUCCESS; - u16 i; - - DEBUGFUNC("igbvf_read_mbx_vf"); - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = igbvf_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; -} - -/** - * igbvf_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 igbvf_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 = igbvf_read_mbx_vf; - mbx->ops.write = igbvf_write_mbx_vf; - mbx->ops.read_posted = igbvf_read_posted_mbx; - mbx->ops.write_posted = igbvf_write_posted_mbx; - mbx->ops.check_for_msg = igbvf_check_for_msg_vf; - mbx->ops.check_for_ack = igbvf_check_for_ack_vf; - mbx->ops.check_for_rst = igbvf_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; -} - |