Commit ab5fe0c5 authored by Don Skidmore's avatar Don Skidmore Committed by Jeff Kirsher

ixgbe: Restore ESDP settings after MAC reset

The I2C mux control relies on the SDP setting in the ESDP register
so it is necessary to restore the value after a MAC reset.  Combine
all this functionality in to a support function.
Signed-off-by: default avatarDon Skidmore <donald.c.skidmore@intel.com>
Tested-by: default avatarKrishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 961fac88
......@@ -26,6 +26,22 @@
#include "ixgbe_common.h"
#include "ixgbe_phy.h"
/** ixgbe_setup_mux_ctl - Setup ESDP register for I2C mux control
* @hw: pointer to hardware structure
**/
static void ixgbe_setup_mux_ctl(struct ixgbe_hw *hw)
{
u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
if (hw->bus.lan_id) {
esdp &= ~(IXGBE_ESDP_SDP1_NATIVE | IXGBE_ESDP_SDP1);
esdp |= IXGBE_ESDP_SDP1_DIR;
}
esdp &= ~(IXGBE_ESDP_SDP0_NATIVE | IXGBE_ESDP_SDP0_DIR);
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
IXGBE_WRITE_FLUSH(hw);
}
/** ixgbe_identify_phy_x550em - Get PHY type based on device id
* @hw: pointer to hardware structure
*
......@@ -33,18 +49,11 @@
*/
static s32 ixgbe_identify_phy_x550em(struct ixgbe_hw *hw)
{
u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
switch (hw->device_id) {
case IXGBE_DEV_ID_X550EM_X_SFP:
/* set up for CS4227 usage */
hw->phy.phy_semaphore_mask = IXGBE_GSSR_SHARED_I2C_SM;
if (hw->bus.lan_id) {
esdp &= ~(IXGBE_ESDP_SDP1_NATIVE | IXGBE_ESDP_SDP1);
esdp |= IXGBE_ESDP_SDP1_DIR;
}
esdp &= ~(IXGBE_ESDP_SDP0_NATIVE | IXGBE_ESDP_SDP0_DIR);
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
ixgbe_setup_mux_ctl(hw);
return ixgbe_identify_module_generic(hw);
case IXGBE_DEV_ID_X550EM_X_KX4:
......@@ -1127,18 +1136,10 @@ static s32 ixgbe_init_phy_ops_X550em(struct ixgbe_hw *hw)
{
struct ixgbe_phy_info *phy = &hw->phy;
s32 ret_val;
u32 esdp;
if (hw->device_id == IXGBE_DEV_ID_X550EM_X_SFP) {
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
phy->phy_semaphore_mask = IXGBE_GSSR_SHARED_I2C_SM;
if (hw->bus.lan_id) {
esdp &= ~(IXGBE_ESDP_SDP1_NATIVE | IXGBE_ESDP_SDP1);
esdp |= IXGBE_ESDP_SDP1_DIR;
}
esdp &= ~(IXGBE_ESDP_SDP0_NATIVE | IXGBE_ESDP_SDP0_DIR);
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
ixgbe_setup_mux_ctl(hw);
}
/* Identify the PHY or SFP module */
......@@ -1366,6 +1367,9 @@ static s32 ixgbe_reset_hw_X550em(struct ixgbe_hw *hw)
hw->mac.num_rar_entries = 128;
hw->mac.ops.init_rx_addrs(hw);
if (hw->device_id == IXGBE_DEV_ID_X550EM_X_SFP)
ixgbe_setup_mux_ctl(hw);
return status;
}
......
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