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ixgbe: Add function ixgbe_reset_pipeline_82599 

This patch adds a function that forces a full pipeline reset.  This
function will be used in following patches to completely reset the PHY
during resets.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Don Skidmore 2012-09-11 06:58:19 +00:00 committed by Jeff Kirsher
parent 505e371808
commit de52a12c29
2 changed files with 45 additions and 0 deletions
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44
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
View File

@ -2080,6 +2080,50 @@ static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
return ret_val;
}
/**
* ixgbe_reset_pipeline_82599 - perform pipeline reset
*
* @hw: pointer to hardware structure
*
* Reset pipeline by asserting Restart_AN together with LMS change to ensure
* full pipeline reset. Note - We must hold the SW/FW semaphore before writing
* to AUTOC, so this function assumes the semaphore is held.
**/
s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw)
{
s32 i, autoc_reg, ret_val;
s32 anlp1_reg = 0;
autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
autoc_reg |= IXGBE_AUTOC_AN_RESTART;
/* Write AUTOC register with toggled LMS[2] bit and Restart_AN */
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg ^ IXGBE_AUTOC_LMS_1G_AN);
/* Wait for AN to leave state 0 */
for (i = 0; i < 10; i++) {
usleep_range(4000, 8000);
anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
if (anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)
break;
}
if (!(anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)) {
hw_dbg(hw, "auto negotiation not completed\n");
ret_val = IXGBE_ERR_RESET_FAILED;
goto reset_pipeline_out;
}
ret_val = 0;
reset_pipeline_out:
/* Write AUTOC register with original LMS field and Restart_AN */
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
IXGBE_WRITE_FLUSH(hw);
return ret_val;
}
static struct ixgbe_mac_operations mac_ops_82599 = {
.init_hw = &ixgbe_init_hw_generic,
.reset_hw = &ixgbe_reset_hw_82599,

1
drivers/net/ethernet/intel/ixgbe/ixgbe_common.h
View File

@ -107,6 +107,7 @@ void ixgbe_clear_tx_pending(struct ixgbe_hw *hw);
void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw, int num_pb,
u32 headroom, int strategy);
s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw);
#define IXGBE_I2C_THERMAL_SENSOR_ADDR 0xF8
#define IXGBE_EMC_INTERNAL_DATA 0x00