ixgbe_phy.c revision 9da57d7b0ddd8d73b676ce12c040362132cdd538
/*
* CDDL HEADER START
*
* Copyright(c) 2007-2008 Intel Corporation. All rights reserved.
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at:
* http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When using or redistributing this file, you may do so under the
* License only. No other modification of this header is permitted.
*
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms of the CDDL.
*/
/* IntelVersion: 1.37 v2008-03-04 */
#pragma ident "%Z%%M% %I% %E% SMI"
#include "ixgbe_api.h"
#include "ixgbe_common.h"
#include "ixgbe_phy.h"
/*
* ixgbe_init_phy_ops_generic - Inits PHY function ptrs
* @hw: pointer to the hardware structure
*
* Initialize the function pointers.
*/
s32
ixgbe_init_phy_ops_generic(struct ixgbe_hw *hw)
{
struct ixgbe_phy_info *phy = &hw->phy;
/* PHY */
phy->ops.identify = &ixgbe_identify_phy_generic;
phy->ops.reset = &ixgbe_reset_phy_generic;
phy->ops.read_reg = &ixgbe_read_phy_reg_generic;
phy->ops.write_reg = &ixgbe_write_phy_reg_generic;
phy->ops.setup_link = &ixgbe_setup_phy_link_generic;
phy->ops.setup_link_speed = &ixgbe_setup_phy_link_speed_generic;
return (IXGBE_SUCCESS);
}
/*
* ixgbe_identify_phy_generic - Get physical layer module
* @hw: pointer to hardware structure
*
* Determines the physical layer module found on the current adapter.
*/
s32
ixgbe_identify_phy_generic(struct ixgbe_hw *hw)
{
s32 status = IXGBE_ERR_PHY_ADDR_INVALID;
u32 phy_addr;
if (hw->phy.type == ixgbe_phy_unknown) {
for (phy_addr = 0; phy_addr < IXGBE_MAX_PHY_ADDR; phy_addr++) {
if (ixgbe_validate_phy_addr(hw, phy_addr)) {
hw->phy.addr = phy_addr;
(void) ixgbe_get_phy_id(hw);
hw->phy.type =
ixgbe_get_phy_type_from_id(hw->phy.id);
status = IXGBE_SUCCESS;
break;
}
}
} else {
status = IXGBE_SUCCESS;
}
return (status);
}
/*
* ixgbe_validate_phy_addr - Determines phy address is valid
* @hw: pointer to hardware structure
*
*/
bool
ixgbe_validate_phy_addr(struct ixgbe_hw *hw, u32 phy_addr)
{
u16 phy_id = 0;
bool valid = FALSE;
hw->phy.addr = phy_addr;
hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_ID_HIGH,
IXGBE_MDIO_PMA_PMD_DEV_TYPE, &phy_id);
if (phy_id != 0xFFFF && phy_id != 0x0)
valid = TRUE;
return (valid);
}
/*
* ixgbe_get_phy_id - Get the phy type
* @hw: pointer to hardware structure
*
*/
s32
ixgbe_get_phy_id(struct ixgbe_hw *hw)
{
u32 status;
u16 phy_id_high = 0;
u16 phy_id_low = 0;
status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_ID_HIGH,
IXGBE_MDIO_PMA_PMD_DEV_TYPE,
&phy_id_high);
if (status == IXGBE_SUCCESS) {
hw->phy.id = (u32)(phy_id_high << 16);
status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_ID_LOW,
IXGBE_MDIO_PMA_PMD_DEV_TYPE,
&phy_id_low);
hw->phy.id |= (u32)(phy_id_low & IXGBE_PHY_REVISION_MASK);
hw->phy.revision = (u32)(phy_id_low & ~IXGBE_PHY_REVISION_MASK);
}
return (status);
}
/*
* ixgbe_get_phy_type_from_id - Get the phy type
* @hw: pointer to hardware structure
*
*/
enum ixgbe_phy_type
ixgbe_get_phy_type_from_id(u32 phy_id)
{
enum ixgbe_phy_type phy_type;
switch (phy_id) {
case QT2022_PHY_ID:
phy_type = ixgbe_phy_qt;
break;
default:
phy_type = ixgbe_phy_unknown;
break;
}
return (phy_type);
}
/*
* ixgbe_reset_phy_generic - Performs a PHY reset
* @hw: pointer to hardware structure
*/
s32
ixgbe_reset_phy_generic(struct ixgbe_hw *hw)
{
/*
* Perform soft PHY reset to the PHY_XS.
* This will cause a soft reset to the PHY
*/
return hw->phy.ops.write_reg(hw, IXGBE_MDIO_PHY_XS_CONTROL,
IXGBE_MDIO_PHY_XS_DEV_TYPE,
IXGBE_MDIO_PHY_XS_RESET);
}
/*
* ixgbe_read_phy_reg_generic - Reads a value from a specified PHY register
* @hw: pointer to hardware structure
* @reg_addr: 32 bit address of PHY register to read
* @phy_data: Pointer to read data from PHY register
*/
s32
ixgbe_read_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
u32 device_type, u16 *phy_data)
{
u32 command;
u32 i;
u32 data;
s32 status = IXGBE_SUCCESS;
u16 gssr;
if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
gssr = IXGBE_GSSR_PHY1_SM;
else
gssr = IXGBE_GSSR_PHY0_SM;
if (ixgbe_acquire_swfw_sync(hw, gssr) != IXGBE_SUCCESS)
status = IXGBE_ERR_SWFW_SYNC;
if (status == IXGBE_SUCCESS) {
/* Setup and write the address cycle command */
command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
(device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
(hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
(IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND));
IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
/*
* Check every 10 usec to see if the address cycle completed.
* The MDI Command bit will clear when the operation is
* complete
*/
for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
usec_delay(10);
command = IXGBE_READ_REG(hw, IXGBE_MSCA);
if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) {
break;
}
}
if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
DEBUGOUT("PHY address command did not complete.\n");
status = IXGBE_ERR_PHY;
}
if (status == IXGBE_SUCCESS) {
/*
* Address cycle complete, setup and write the read
* command
*/
command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
(device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
(hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
(IXGBE_MSCA_READ | IXGBE_MSCA_MDI_COMMAND));
IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
/*
* Check every 10 usec to see if the address cycle
* completed. The MDI Command bit will clear when the
* operation is complete
*/
for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
usec_delay(10);
command = IXGBE_READ_REG(hw, IXGBE_MSCA);
if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
break;
}
if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
DEBUGOUT("PHY read command didn't complete\n");
status = IXGBE_ERR_PHY;
} else {
/*
* Read operation is complete. Get the data
* from MSRWD
*/
data = IXGBE_READ_REG(hw, IXGBE_MSRWD);
data >>= IXGBE_MSRWD_READ_DATA_SHIFT;
*phy_data = (u16)(data);
}
}
ixgbe_release_swfw_sync(hw, gssr);
}
return (status);
}
/*
* ixgbe_write_phy_reg_generic - Writes a value to specified PHY register
* @hw: pointer to hardware structure
* @reg_addr: 32 bit PHY register to write
* @device_type: 5 bit device type
* @phy_data: Data to write to the PHY register
*/
s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
u32 device_type, u16 phy_data)
{
u32 command;
u32 i;
s32 status = IXGBE_SUCCESS;
u16 gssr;
if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
gssr = IXGBE_GSSR_PHY1_SM;
else
gssr = IXGBE_GSSR_PHY0_SM;
if (ixgbe_acquire_swfw_sync(hw, gssr) != IXGBE_SUCCESS)
status = IXGBE_ERR_SWFW_SYNC;
if (status == IXGBE_SUCCESS) {
/*
* Put the data in the MDI single read and write data register
*/
IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data);
/* Setup and write the address cycle command */
command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
(device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
(hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
(IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND));
IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
/*
* Check every 10 usec to see if the address cycle completed.
* The MDI Command bit will clear when the operation is
* complete
*/
for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
usec_delay(10);
command = IXGBE_READ_REG(hw, IXGBE_MSCA);
if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
break;
}
if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
DEBUGOUT("PHY address cmd didn't complete\n");
status = IXGBE_ERR_PHY;
}
if (status == IXGBE_SUCCESS) {
/*
* Address cycle complete, setup and write the write
* command
*/
command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) |
(device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) |
(hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
(IXGBE_MSCA_WRITE | IXGBE_MSCA_MDI_COMMAND));
IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);
/*
* Check every 10 usec to see if the address cycle
* completed. The MDI Command bit will clear when the
* operation is complete
*/
for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
usec_delay(10);
command = IXGBE_READ_REG(hw, IXGBE_MSCA);
if ((command & IXGBE_MSCA_MDI_COMMAND) == 0)
break;
}
if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) {
DEBUGOUT("PHY address cmd didn't complete\n");
status = IXGBE_ERR_PHY;
}
}
ixgbe_release_swfw_sync(hw, gssr);
}
return (status);
}
/*
* ixgbe_setup_phy_link_generic - Set and restart autoneg
* @hw: pointer to hardware structure
*
* Restart autonegotiation and PHY and waits for completion.
*/
s32
ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw)
{
s32 status = IXGBE_NOT_IMPLEMENTED;
u32 time_out;
u32 max_time_out = 10;
u16 autoneg_reg = IXGBE_MII_AUTONEG_REG;
/*
* Set advertisement settings in PHY based on autoneg_advertised
* settings. If autoneg_advertised = 0, then advertise default values
* tnx devices cannot be "forced" to a autoneg 10G and fail. But can
* for a 1G.
*/
hw->phy.ops.read_reg(hw, IXGBE_MII_SPEED_SELECTION_REG,
IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &autoneg_reg);
if (hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_1GB_FULL)
autoneg_reg &= 0xEFFF; /* 0 in bit 12 is 1G operation */
else
autoneg_reg |= 0x1000; /* 1 in bit 12 is 10G/1G operation */
hw->phy.ops.write_reg(hw, IXGBE_MII_SPEED_SELECTION_REG,
IXGBE_MDIO_AUTO_NEG_DEV_TYPE, autoneg_reg);
/* Restart PHY autonegotiation and wait for completion */
hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &autoneg_reg);
autoneg_reg |= IXGBE_MII_RESTART;
hw->phy.ops.write_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
IXGBE_MDIO_AUTO_NEG_DEV_TYPE, autoneg_reg);
/* Wait for autonegotiation to finish */
for (time_out = 0; time_out < max_time_out; time_out++) {
usec_delay(10);
/* Restart PHY autonegotiation and wait for completion */
status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
&autoneg_reg);
autoneg_reg &= IXGBE_MII_AUTONEG_COMPLETE;
if (autoneg_reg == IXGBE_MII_AUTONEG_COMPLETE) {
status = IXGBE_SUCCESS;
break;
}
}
if (time_out == max_time_out)
status = IXGBE_ERR_LINK_SETUP;
return (status);
}
/*
* ixgbe_setup_phy_link_speed_generic - Sets the auto advertised capabilities
* @hw: pointer to hardware structure
* @speed: new link speed
* @autoneg: TRUE if autonegotiation enabled
*/
s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
bool autoneg,
bool autoneg_wait_to_complete)
{
UNREFERENCED_PARAMETER(autoneg);
UNREFERENCED_PARAMETER(autoneg_wait_to_complete);
/*
* Clear autoneg_advertised and set new values based on input link
* speed.
*/
hw->phy.autoneg_advertised = 0;
if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
}
if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
}
/* Setup link based on the new speed settings */
hw->phy.ops.setup_link(hw);
return (IXGBE_SUCCESS);
}