diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c | 471 |
1 files changed, 0 insertions, 471 deletions
diff --git a/ANDROID_3.4.5/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c b/ANDROID_3.4.5/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c deleted file mode 100644 index 1f3e32b5..00000000 --- a/ANDROID_3.4.5/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.c +++ /dev/null @@ -1,471 +0,0 @@ -/******************************************************************************* - - Intel 10 Gigabit PCI Express Linux driver - Copyright(c) 1999 - 2012 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 <linux/pci.h> -#include <linux/delay.h> -#include "ixgbe_type.h" -#include "ixgbe_common.h" -#include "ixgbe_mbx.h" - -/** - * ixgbe_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 successfully read message from buffer - **/ -s32 ixgbe_read_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - s32 ret_val = IXGBE_ERR_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; -} - -/** - * ixgbe_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 ixgbe_write_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - s32 ret_val = 0; - - if (size > mbx->size) - ret_val = IXGBE_ERR_MBX; - - else if (mbx->ops.write) - ret_val = mbx->ops.write(hw, msg, size, mbx_id); - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_check_for_msg(struct ixgbe_hw *hw, u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - s32 ret_val = IXGBE_ERR_MBX; - - if (mbx->ops.check_for_msg) - ret_val = mbx->ops.check_for_msg(hw, mbx_id); - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_check_for_ack(struct ixgbe_hw *hw, u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - s32 ret_val = IXGBE_ERR_MBX; - - if (mbx->ops.check_for_ack) - ret_val = mbx->ops.check_for_ack(hw, mbx_id); - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_check_for_rst(struct ixgbe_hw *hw, u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - s32 ret_val = IXGBE_ERR_MBX; - - if (mbx->ops.check_for_rst) - ret_val = mbx->ops.check_for_rst(hw, mbx_id); - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_poll_for_msg(struct ixgbe_hw *hw, u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - int countdown = mbx->timeout; - - if (!countdown || !mbx->ops.check_for_msg) - goto out; - - while (countdown && mbx->ops.check_for_msg(hw, mbx_id)) { - countdown--; - if (!countdown) - break; - udelay(mbx->usec_delay); - } - -out: - return countdown ? 0 : IXGBE_ERR_MBX; -} - -/** - * ixgbe_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 ixgbe_poll_for_ack(struct ixgbe_hw *hw, u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - int countdown = mbx->timeout; - - if (!countdown || !mbx->ops.check_for_ack) - goto out; - - while (countdown && mbx->ops.check_for_ack(hw, mbx_id)) { - countdown--; - if (!countdown) - break; - udelay(mbx->usec_delay); - } - -out: - return countdown ? 0 : IXGBE_ERR_MBX; -} - -/** - * ixgbe_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 ixgbe_read_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, - u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - s32 ret_val = IXGBE_ERR_MBX; - - if (!mbx->ops.read) - goto out; - - ret_val = ixgbe_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; -} - -/** - * ixgbe_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 ixgbe_write_posted_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size, - u16 mbx_id) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - s32 ret_val = IXGBE_ERR_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 = ixgbe_poll_for_ack(hw, mbx_id); -out: - return ret_val; -} - -static s32 ixgbe_check_for_bit_pf(struct ixgbe_hw *hw, u32 mask, s32 index) -{ - u32 mbvficr = IXGBE_READ_REG(hw, IXGBE_MBVFICR(index)); - s32 ret_val = IXGBE_ERR_MBX; - - if (mbvficr & mask) { - ret_val = 0; - IXGBE_WRITE_REG(hw, IXGBE_MBVFICR(index), mask); - } - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_check_for_msg_pf(struct ixgbe_hw *hw, u16 vf_number) -{ - s32 ret_val = IXGBE_ERR_MBX; - s32 index = IXGBE_MBVFICR_INDEX(vf_number); - u32 vf_bit = vf_number % 16; - - if (!ixgbe_check_for_bit_pf(hw, IXGBE_MBVFICR_VFREQ_VF1 << vf_bit, - index)) { - ret_val = 0; - hw->mbx.stats.reqs++; - } - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_check_for_ack_pf(struct ixgbe_hw *hw, u16 vf_number) -{ - s32 ret_val = IXGBE_ERR_MBX; - s32 index = IXGBE_MBVFICR_INDEX(vf_number); - u32 vf_bit = vf_number % 16; - - if (!ixgbe_check_for_bit_pf(hw, IXGBE_MBVFICR_VFACK_VF1 << vf_bit, - index)) { - ret_val = 0; - hw->mbx.stats.acks++; - } - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_check_for_rst_pf(struct ixgbe_hw *hw, u16 vf_number) -{ - u32 reg_offset = (vf_number < 32) ? 0 : 1; - u32 vf_shift = vf_number % 32; - u32 vflre = 0; - s32 ret_val = IXGBE_ERR_MBX; - - switch (hw->mac.type) { - case ixgbe_mac_82599EB: - vflre = IXGBE_READ_REG(hw, IXGBE_VFLRE(reg_offset)); - break; - case ixgbe_mac_X540: - vflre = IXGBE_READ_REG(hw, IXGBE_VFLREC(reg_offset)); - break; - default: - break; - } - - if (vflre & (1 << vf_shift)) { - ret_val = 0; - IXGBE_WRITE_REG(hw, IXGBE_VFLREC(reg_offset), (1 << vf_shift)); - hw->mbx.stats.rsts++; - } - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_obtain_mbx_lock_pf(struct ixgbe_hw *hw, u16 vf_number) -{ - s32 ret_val = IXGBE_ERR_MBX; - u32 p2v_mailbox; - - /* Take ownership of the buffer */ - IXGBE_WRITE_REG(hw, IXGBE_PFMAILBOX(vf_number), IXGBE_PFMAILBOX_PFU); - - /* reserve mailbox for vf use */ - p2v_mailbox = IXGBE_READ_REG(hw, IXGBE_PFMAILBOX(vf_number)); - if (p2v_mailbox & IXGBE_PFMAILBOX_PFU) - ret_val = 0; - - return ret_val; -} - -/** - * ixgbe_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 ixgbe_write_mbx_pf(struct ixgbe_hw *hw, u32 *msg, u16 size, - u16 vf_number) -{ - s32 ret_val; - u16 i; - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = ixgbe_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 */ - ixgbe_check_for_msg_pf(hw, vf_number); - ixgbe_check_for_ack_pf(hw, vf_number); - - /* copy the caller specified message to the mailbox memory buffer */ - for (i = 0; i < size; i++) - IXGBE_WRITE_REG_ARRAY(hw, IXGBE_PFMBMEM(vf_number), i, msg[i]); - - /* Interrupt VF to tell it a message has been sent and release buffer*/ - IXGBE_WRITE_REG(hw, IXGBE_PFMAILBOX(vf_number), IXGBE_PFMAILBOX_STS); - - /* update stats */ - hw->mbx.stats.msgs_tx++; - -out_no_write: - return ret_val; - -} - -/** - * ixgbe_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 ixgbe_read_mbx_pf(struct ixgbe_hw *hw, u32 *msg, u16 size, - u16 vf_number) -{ - s32 ret_val; - u16 i; - - /* lock the mailbox to prevent pf/vf race condition */ - ret_val = ixgbe_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] = IXGBE_READ_REG_ARRAY(hw, IXGBE_PFMBMEM(vf_number), i); - - /* Acknowledge the message and release buffer */ - IXGBE_WRITE_REG(hw, IXGBE_PFMAILBOX(vf_number), IXGBE_PFMAILBOX_ACK); - - /* update stats */ - hw->mbx.stats.msgs_rx++; - -out_no_read: - return ret_val; -} - -#ifdef CONFIG_PCI_IOV -/** - * ixgbe_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 - */ -void ixgbe_init_mbx_params_pf(struct ixgbe_hw *hw) -{ - struct ixgbe_mbx_info *mbx = &hw->mbx; - - if (hw->mac.type != ixgbe_mac_82599EB && - hw->mac.type != ixgbe_mac_X540) - return; - - mbx->timeout = 0; - mbx->usec_delay = 0; - - mbx->stats.msgs_tx = 0; - mbx->stats.msgs_rx = 0; - mbx->stats.reqs = 0; - mbx->stats.acks = 0; - mbx->stats.rsts = 0; - - mbx->size = IXGBE_VFMAILBOX_SIZE; -} -#endif /* CONFIG_PCI_IOV */ - -struct ixgbe_mbx_operations mbx_ops_generic = { - .read = ixgbe_read_mbx_pf, - .write = ixgbe_write_mbx_pf, - .read_posted = ixgbe_read_posted_mbx, - .write_posted = ixgbe_write_posted_mbx, - .check_for_msg = ixgbe_check_for_msg_pf, - .check_for_ack = ixgbe_check_for_ack_pf, - .check_for_rst = ixgbe_check_for_rst_pf, -}; - |