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f-stack/dpdk/kernel/linux/kni/ethtool/ixgbe/ixgbe_82599.c

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// SPDX-License-Identifier: GPL-2.0
/*******************************************************************************
Intel 10 Gigabit PCI Express Linux driver
Copyright(c) 1999 - 2012 Intel Corporation.
Contact Information:
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include "ixgbe_type.h"
#include "ixgbe_82599.h"
#include "ixgbe_api.h"
#include "ixgbe_common.h"
#include "ixgbe_phy.h"
static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
bool autoneg,
bool autoneg_wait_to_complete);
static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw);
static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
u16 offset, u16 *data);
static s32 ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw *hw, u16 offset,
u16 words, u16 *data);
static s32 ixgbe_read_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
u8 dev_addr, u8 *data);
static s32 ixgbe_write_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
u8 dev_addr, u8 data);
void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw)
{
struct ixgbe_mac_info *mac = &hw->mac;
/* enable the laser control functions for SFP+ fiber */
if (mac->ops.get_media_type(hw) == ixgbe_media_type_fiber) {
mac->ops.disable_tx_laser =
&ixgbe_disable_tx_laser_multispeed_fiber;
mac->ops.enable_tx_laser =
&ixgbe_enable_tx_laser_multispeed_fiber;
mac->ops.flap_tx_laser = &ixgbe_flap_tx_laser_multispeed_fiber;
} else {
mac->ops.disable_tx_laser = NULL;
mac->ops.enable_tx_laser = NULL;
mac->ops.flap_tx_laser = NULL;
}
if (hw->phy.multispeed_fiber) {
/* Set up dual speed SFP+ support */
mac->ops.setup_link = &ixgbe_setup_mac_link_multispeed_fiber;
} else {
if ((ixgbe_get_media_type(hw) == ixgbe_media_type_backplane) &&
(hw->phy.smart_speed == ixgbe_smart_speed_auto ||
hw->phy.smart_speed == ixgbe_smart_speed_on) &&
!ixgbe_verify_lesm_fw_enabled_82599(hw)) {
mac->ops.setup_link = &ixgbe_setup_mac_link_smartspeed;
} else {
mac->ops.setup_link = &ixgbe_setup_mac_link_82599;
}
}
}
/**
* ixgbe_init_phy_ops_82599 - PHY/SFP specific init
* @hw: pointer to hardware structure
*
* Initialize any function pointers that were not able to be
* set during init_shared_code because the PHY/SFP type was
* not known. Perform the SFP init if necessary.
*
**/
s32 ixgbe_init_phy_ops_82599(struct ixgbe_hw *hw)
{
struct ixgbe_mac_info *mac = &hw->mac;
struct ixgbe_phy_info *phy = &hw->phy;
s32 ret_val = 0;
u32 esdp;
if (hw->device_id == IXGBE_DEV_ID_82599_QSFP_SF_QP) {
/* Store flag indicating I2C bus access control unit. */
hw->phy.qsfp_shared_i2c_bus = TRUE;
/* Initialize access to QSFP+ I2C bus */
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
esdp |= IXGBE_ESDP_SDP0_DIR;
esdp &= ~IXGBE_ESDP_SDP1_DIR;
esdp &= ~IXGBE_ESDP_SDP0;
esdp &= ~IXGBE_ESDP_SDP0_NATIVE;
esdp &= ~IXGBE_ESDP_SDP1_NATIVE;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
IXGBE_WRITE_FLUSH(hw);
phy->ops.read_i2c_byte = &ixgbe_read_i2c_byte_82599;
phy->ops.write_i2c_byte = &ixgbe_write_i2c_byte_82599;
}
/* Identify the PHY or SFP module */
ret_val = phy->ops.identify(hw);
if (ret_val == IXGBE_ERR_SFP_NOT_SUPPORTED)
goto init_phy_ops_out;
/* Setup function pointers based on detected SFP module and speeds */
ixgbe_init_mac_link_ops_82599(hw);
if (hw->phy.sfp_type != ixgbe_sfp_type_unknown)
hw->phy.ops.reset = NULL;
/* If copper media, overwrite with copper function pointers */
if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) {
mac->ops.setup_link = &ixgbe_setup_copper_link_82599;
mac->ops.get_link_capabilities =
&ixgbe_get_copper_link_capabilities_generic;
}
/* Set necessary function pointers based on phy type */
switch (hw->phy.type) {
case ixgbe_phy_tn:
phy->ops.setup_link = &ixgbe_setup_phy_link_tnx;
phy->ops.check_link = &ixgbe_check_phy_link_tnx;
phy->ops.get_firmware_version =
&ixgbe_get_phy_firmware_version_tnx;
break;
default:
break;
}
init_phy_ops_out:
return ret_val;
}
s32 ixgbe_setup_sfp_modules_82599(struct ixgbe_hw *hw)
{
s32 ret_val = 0;
u32 reg_anlp1 = 0;
u32 i = 0;
u16 list_offset, data_offset, data_value;
if (hw->phy.sfp_type != ixgbe_sfp_type_unknown) {
ixgbe_init_mac_link_ops_82599(hw);
hw->phy.ops.reset = NULL;
ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset,
&data_offset);
if (ret_val != 0)
goto setup_sfp_out;
/* PHY config will finish before releasing the semaphore */
ret_val = hw->mac.ops.acquire_swfw_sync(hw,
IXGBE_GSSR_MAC_CSR_SM);
if (ret_val != 0) {
ret_val = IXGBE_ERR_SWFW_SYNC;
goto setup_sfp_out;
}
hw->eeprom.ops.read(hw, ++data_offset, &data_value);
while (data_value != 0xffff) {
IXGBE_WRITE_REG(hw, IXGBE_CORECTL, data_value);
IXGBE_WRITE_FLUSH(hw);
hw->eeprom.ops.read(hw, ++data_offset, &data_value);
}
/* Release the semaphore */
hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
/* Delay obtaining semaphore again to allow FW access */
msleep(hw->eeprom.semaphore_delay);
/* Now restart DSP by setting Restart_AN and clearing LMS */
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, ((IXGBE_READ_REG(hw,
IXGBE_AUTOC) & ~IXGBE_AUTOC_LMS_MASK) |
IXGBE_AUTOC_AN_RESTART));
/* Wait for AN to leave state 0 */
for (i = 0; i < 10; i++) {
msleep(4);
reg_anlp1 = IXGBE_READ_REG(hw, IXGBE_ANLP1);
if (reg_anlp1 & IXGBE_ANLP1_AN_STATE_MASK)
break;
}
if (!(reg_anlp1 & IXGBE_ANLP1_AN_STATE_MASK)) {
hw_dbg(hw, "sfp module setup not complete\n");
ret_val = IXGBE_ERR_SFP_SETUP_NOT_COMPLETE;
goto setup_sfp_out;
}
/* Restart DSP by setting Restart_AN and return to SFI mode */
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, (IXGBE_READ_REG(hw,
IXGBE_AUTOC) | IXGBE_AUTOC_LMS_10G_SERIAL |
IXGBE_AUTOC_AN_RESTART));
}
setup_sfp_out:
return ret_val;
}
/**
* ixgbe_init_ops_82599 - Inits func ptrs and MAC type
* @hw: pointer to hardware structure
*
* Initialize the function pointers and assign the MAC type for 82599.
* Does not touch the hardware.
**/
s32 ixgbe_init_ops_82599(struct ixgbe_hw *hw)
{
struct ixgbe_mac_info *mac = &hw->mac;
struct ixgbe_phy_info *phy = &hw->phy;
struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
s32 ret_val;
ixgbe_init_phy_ops_generic(hw);
ret_val = ixgbe_init_ops_generic(hw);
/* PHY */
phy->ops.identify = &ixgbe_identify_phy_82599;
phy->ops.init = &ixgbe_init_phy_ops_82599;
/* MAC */
mac->ops.reset_hw = &ixgbe_reset_hw_82599;
mac->ops.get_media_type = &ixgbe_get_media_type_82599;
mac->ops.get_supported_physical_layer =
&ixgbe_get_supported_physical_layer_82599;
mac->ops.disable_sec_rx_path = &ixgbe_disable_sec_rx_path_generic;
mac->ops.enable_sec_rx_path = &ixgbe_enable_sec_rx_path_generic;
mac->ops.enable_rx_dma = &ixgbe_enable_rx_dma_82599;
mac->ops.read_analog_reg8 = &ixgbe_read_analog_reg8_82599;
mac->ops.write_analog_reg8 = &ixgbe_write_analog_reg8_82599;
mac->ops.start_hw = &ixgbe_start_hw_82599;
mac->ops.get_san_mac_addr = &ixgbe_get_san_mac_addr_generic;
mac->ops.set_san_mac_addr = &ixgbe_set_san_mac_addr_generic;
mac->ops.get_device_caps = &ixgbe_get_device_caps_generic;
mac->ops.get_wwn_prefix = &ixgbe_get_wwn_prefix_generic;
mac->ops.get_fcoe_boot_status = &ixgbe_get_fcoe_boot_status_generic;
/* RAR, Multicast, VLAN */
mac->ops.set_vmdq = &ixgbe_set_vmdq_generic;
mac->ops.set_vmdq_san_mac = &ixgbe_set_vmdq_san_mac_generic;
mac->ops.clear_vmdq = &ixgbe_clear_vmdq_generic;
mac->ops.insert_mac_addr = &ixgbe_insert_mac_addr_generic;
mac->rar_highwater = 1;
mac->ops.set_vfta = &ixgbe_set_vfta_generic;
mac->ops.set_vlvf = &ixgbe_set_vlvf_generic;
mac->ops.clear_vfta = &ixgbe_clear_vfta_generic;
mac->ops.init_uta_tables = &ixgbe_init_uta_tables_generic;
mac->ops.setup_sfp = &ixgbe_setup_sfp_modules_82599;
mac->ops.set_mac_anti_spoofing = &ixgbe_set_mac_anti_spoofing;
mac->ops.set_vlan_anti_spoofing = &ixgbe_set_vlan_anti_spoofing;
/* Link */
mac->ops.get_link_capabilities = &ixgbe_get_link_capabilities_82599;
mac->ops.check_link = &ixgbe_check_mac_link_generic;
mac->ops.setup_rxpba = &ixgbe_set_rxpba_generic;
ixgbe_init_mac_link_ops_82599(hw);
mac->mcft_size = 128;
mac->vft_size = 128;
mac->num_rar_entries = 128;
mac->rx_pb_size = 512;
mac->max_tx_queues = 128;
mac->max_rx_queues = 128;
mac->max_msix_vectors = ixgbe_get_pcie_msix_count_generic(hw);
mac->arc_subsystem_valid = (IXGBE_READ_REG(hw, IXGBE_FWSM) &
IXGBE_FWSM_MODE_MASK) ? true : false;
//hw->mbx.ops.init_params = ixgbe_init_mbx_params_pf;
/* EEPROM */
eeprom->ops.read = &ixgbe_read_eeprom_82599;
eeprom->ops.read_buffer = &ixgbe_read_eeprom_buffer_82599;
/* Manageability interface */
mac->ops.set_fw_drv_ver = &ixgbe_set_fw_drv_ver_generic;
mac->ops.get_thermal_sensor_data =
&ixgbe_get_thermal_sensor_data_generic;
mac->ops.init_thermal_sensor_thresh =
&ixgbe_init_thermal_sensor_thresh_generic;
return ret_val;
}
/**
* ixgbe_get_link_capabilities_82599 - Determines link capabilities
* @hw: pointer to hardware structure
* @speed: pointer to link speed
* @negotiation: true when autoneg or autotry is enabled
*
* Determines the link capabilities by reading the AUTOC register.
**/
s32 ixgbe_get_link_capabilities_82599(struct ixgbe_hw *hw,
ixgbe_link_speed *speed,
bool *negotiation)
{
s32 status = 0;
u32 autoc = 0;
/* Check if 1G SFP module. */
if (hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1) {
*speed = IXGBE_LINK_SPEED_1GB_FULL;
*negotiation = true;
goto out;
}
/*
* Determine link capabilities based on the stored value of AUTOC,
* which represents EEPROM defaults. If AUTOC value has not
* been stored, use the current register values.
*/
if (hw->mac.orig_link_settings_stored)
autoc = hw->mac.orig_autoc;
else
autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
switch (autoc & IXGBE_AUTOC_LMS_MASK) {
case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
*speed = IXGBE_LINK_SPEED_1GB_FULL;
*negotiation = false;
break;
case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
*speed = IXGBE_LINK_SPEED_10GB_FULL;
*negotiation = false;
break;
case IXGBE_AUTOC_LMS_1G_AN:
*speed = IXGBE_LINK_SPEED_1GB_FULL;
*negotiation = true;
break;
case IXGBE_AUTOC_LMS_10G_SERIAL:
*speed = IXGBE_LINK_SPEED_10GB_FULL;
*negotiation = false;
break;
case IXGBE_AUTOC_LMS_KX4_KX_KR:
case IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN:
*speed = IXGBE_LINK_SPEED_UNKNOWN;
if (autoc & IXGBE_AUTOC_KR_SUPP)
*speed |= IXGBE_LINK_SPEED_10GB_FULL;
if (autoc & IXGBE_AUTOC_KX4_SUPP)
*speed |= IXGBE_LINK_SPEED_10GB_FULL;
if (autoc & IXGBE_AUTOC_KX_SUPP)
*speed |= IXGBE_LINK_SPEED_1GB_FULL;
*negotiation = true;
break;
case IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII:
*speed = IXGBE_LINK_SPEED_100_FULL;
if (autoc & IXGBE_AUTOC_KR_SUPP)
*speed |= IXGBE_LINK_SPEED_10GB_FULL;
if (autoc & IXGBE_AUTOC_KX4_SUPP)
*speed |= IXGBE_LINK_SPEED_10GB_FULL;
if (autoc & IXGBE_AUTOC_KX_SUPP)
*speed |= IXGBE_LINK_SPEED_1GB_FULL;
*negotiation = true;
break;
case IXGBE_AUTOC_LMS_SGMII_1G_100M:
*speed = IXGBE_LINK_SPEED_1GB_FULL | IXGBE_LINK_SPEED_100_FULL;
*negotiation = false;
break;
default:
status = IXGBE_ERR_LINK_SETUP;
goto out;
break;
}
if (hw->phy.multispeed_fiber) {
*speed |= IXGBE_LINK_SPEED_10GB_FULL |
IXGBE_LINK_SPEED_1GB_FULL;
*negotiation = true;
}
out:
return status;
}
/**
* ixgbe_get_media_type_82599 - Get media type
* @hw: pointer to hardware structure
*
* Returns the media type (fiber, copper, backplane)
**/
enum ixgbe_media_type ixgbe_get_media_type_82599(struct ixgbe_hw *hw)
{
enum ixgbe_media_type media_type;
/* Detect if there is a copper PHY attached. */
switch (hw->phy.type) {
case ixgbe_phy_cu_unknown:
case ixgbe_phy_tn:
media_type = ixgbe_media_type_copper;
goto out;
default:
break;
}
switch (hw->device_id) {
case IXGBE_DEV_ID_82599_KX4:
case IXGBE_DEV_ID_82599_KX4_MEZZ:
case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
case IXGBE_DEV_ID_82599_KR:
case IXGBE_DEV_ID_82599_BACKPLANE_FCOE:
case IXGBE_DEV_ID_82599_XAUI_LOM:
/* Default device ID is mezzanine card KX/KX4 */
media_type = ixgbe_media_type_backplane;
break;
case IXGBE_DEV_ID_82599_SFP:
case IXGBE_DEV_ID_82599_SFP_FCOE:
case IXGBE_DEV_ID_82599_SFP_EM:
case IXGBE_DEV_ID_82599_SFP_SF2:
case IXGBE_DEV_ID_82599EN_SFP:
media_type = ixgbe_media_type_fiber;
break;
case IXGBE_DEV_ID_82599_CX4:
media_type = ixgbe_media_type_cx4;
break;
case IXGBE_DEV_ID_82599_T3_LOM:
media_type = ixgbe_media_type_copper;
break;
case IXGBE_DEV_ID_82599_LS:
media_type = ixgbe_media_type_fiber_lco;
break;
case IXGBE_DEV_ID_82599_QSFP_SF_QP:
media_type = ixgbe_media_type_fiber_qsfp;
break;
default:
media_type = ixgbe_media_type_unknown;
break;
}
out:
return media_type;
}
/**
* ixgbe_start_mac_link_82599 - Setup MAC link settings
* @hw: pointer to hardware structure
* @autoneg_wait_to_complete: true when waiting for completion is needed
*
* Configures link settings based on values in the ixgbe_hw struct.
* Restarts the link. Performs autonegotiation if needed.
**/
s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
bool autoneg_wait_to_complete)
{
u32 autoc_reg;
u32 links_reg = 0;
u32 i;
s32 status = 0;
/* Restart link */
autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
autoc_reg |= IXGBE_AUTOC_AN_RESTART;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
/* Only poll for autoneg to complete if specified to do so */
if (autoneg_wait_to_complete) {
if ((autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
IXGBE_AUTOC_LMS_KX4_KX_KR ||
(autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
(autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
if (links_reg & IXGBE_LINKS_KX_AN_COMP)
break;
msleep(100);
}
if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
hw_dbg(hw, "Autoneg did not complete.\n");
}
}
}
/* Add delay to filter out noises during initial link setup */
msleep(50);
return status;
}
/**
* ixgbe_disable_tx_laser_multispeed_fiber - Disable Tx laser
* @hw: pointer to hardware structure
*
* The base drivers may require better control over SFP+ module
* PHY states. This includes selectively shutting down the Tx
* laser on the PHY, effectively halting physical link.
**/
void ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
{
u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
/* Disable tx laser; allow 100us to go dark per spec */
esdp_reg |= IXGBE_ESDP_SDP3;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
IXGBE_WRITE_FLUSH(hw);
udelay(100);
}
/**
* ixgbe_enable_tx_laser_multispeed_fiber - Enable Tx laser
* @hw: pointer to hardware structure
*
* The base drivers may require better control over SFP+ module
* PHY states. This includes selectively turning on the Tx
* laser on the PHY, effectively starting physical link.
**/
void ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
{
u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
/* Enable tx laser; allow 100ms to light up */
esdp_reg &= ~IXGBE_ESDP_SDP3;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
IXGBE_WRITE_FLUSH(hw);
msleep(100);
}
/**
* ixgbe_flap_tx_laser_multispeed_fiber - Flap Tx laser
* @hw: pointer to hardware structure
*
* When the driver changes the link speeds that it can support,
* it sets autotry_restart to true to indicate that we need to
* initiate a new autotry session with the link partner. To do
* so, we set the speed then disable and re-enable the tx laser, to
* alert the link partner that it also needs to restart autotry on its
* end. This is consistent with true clause 37 autoneg, which also
* involves a loss of signal.
**/
void ixgbe_flap_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
{
if (hw->mac.autotry_restart) {
ixgbe_disable_tx_laser_multispeed_fiber(hw);
ixgbe_enable_tx_laser_multispeed_fiber(hw);
hw->mac.autotry_restart = false;
}
}
/**
* ixgbe_setup_mac_link_multispeed_fiber - Set MAC link speed
* @hw: pointer to hardware structure
* @speed: new link speed
* @autoneg: true if autonegotiation enabled
* @autoneg_wait_to_complete: true when waiting for completion is needed
*
* Set the link speed in the AUTOC register and restarts link.
**/
s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
ixgbe_link_speed speed, bool autoneg,
bool autoneg_wait_to_complete)
{
s32 status = 0;
ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
ixgbe_link_speed highest_link_speed = IXGBE_LINK_SPEED_UNKNOWN;
u32 speedcnt = 0;
u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
u32 i = 0;
bool link_up = false;
bool negotiation;
/* Mask off requested but non-supported speeds */
status = ixgbe_get_link_capabilities(hw, &link_speed, &negotiation);
if (status != 0)
return status;
speed &= link_speed;
/*
* Try each speed one by one, highest priority first. We do this in
* software because 10gb fiber doesn't support speed autonegotiation.
*/
if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
speedcnt++;
highest_link_speed = IXGBE_LINK_SPEED_10GB_FULL;
/* If we already have link at this speed, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up, false);
if (status != 0)
return status;
if ((link_speed == IXGBE_LINK_SPEED_10GB_FULL) && link_up)
goto out;
/* Set the module link speed */
esdp_reg |= (IXGBE_ESDP_SDP5_DIR | IXGBE_ESDP_SDP5);
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
IXGBE_WRITE_FLUSH(hw);
/* Allow module to change analog characteristics (1G->10G) */
msleep(40);
status = ixgbe_setup_mac_link_82599(hw,
IXGBE_LINK_SPEED_10GB_FULL,
autoneg,
autoneg_wait_to_complete);
if (status != 0)
return status;
/* Flap the tx laser if it has not already been done */
ixgbe_flap_tx_laser(hw);
/*
* Wait for the controller to acquire link. Per IEEE 802.3ap,
* Section 73.10.2, we may have to wait up to 500ms if KR is
* attempted. 82599 uses the same timing for 10g SFI.
*/
for (i = 0; i < 5; i++) {
/* Wait for the link partner to also set speed */
msleep(100);
/* If we have link, just jump out */
status = ixgbe_check_link(hw, &link_speed,
&link_up, false);
if (status != 0)
return status;
if (link_up)
goto out;
}
}
if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
speedcnt++;
if (highest_link_speed == IXGBE_LINK_SPEED_UNKNOWN)
highest_link_speed = IXGBE_LINK_SPEED_1GB_FULL;
/* If we already have link at this speed, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up, false);
if (status != 0)
return status;
if ((link_speed == IXGBE_LINK_SPEED_1GB_FULL) && link_up)
goto out;
/* Set the module link speed */
esdp_reg &= ~IXGBE_ESDP_SDP5;
esdp_reg |= IXGBE_ESDP_SDP5_DIR;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
IXGBE_WRITE_FLUSH(hw);
/* Allow module to change analog characteristics (10G->1G) */
msleep(40);
status = ixgbe_setup_mac_link_82599(hw,
IXGBE_LINK_SPEED_1GB_FULL,
autoneg,
autoneg_wait_to_complete);
if (status != 0)
return status;
/* Flap the tx laser if it has not already been done */
ixgbe_flap_tx_laser(hw);
/* Wait for the link partner to also set speed */
msleep(100);
/* If we have link, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up, false);
if (status != 0)
return status;
if (link_up)
goto out;
}
/*
* We didn't get link. Configure back to the highest speed we tried,
* (if there was more than one). We call ourselves back with just the
* single highest speed that the user requested.
*/
if (speedcnt > 1)
status = ixgbe_setup_mac_link_multispeed_fiber(hw,
highest_link_speed, autoneg, autoneg_wait_to_complete);
out:
/* Set autoneg_advertised value 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;
return status;
}
/**
* ixgbe_setup_mac_link_smartspeed - Set MAC link speed using SmartSpeed
* @hw: pointer to hardware structure
* @speed: new link speed
* @autoneg: true if autonegotiation enabled
* @autoneg_wait_to_complete: true when waiting for completion is needed
*
* Implements the Intel SmartSpeed algorithm.
**/
s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
ixgbe_link_speed speed, bool autoneg,
bool autoneg_wait_to_complete)
{
s32 status = 0;
ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
s32 i, j;
bool link_up = false;
u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
/* Set autoneg_advertised value 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;
if (speed & IXGBE_LINK_SPEED_100_FULL)
hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_100_FULL;
/*
* Implement Intel SmartSpeed algorithm. SmartSpeed will reduce the
* autoneg advertisement if link is unable to be established at the
* highest negotiated rate. This can sometimes happen due to integrity
* issues with the physical media connection.
*/
/* First, try to get link with full advertisement */
hw->phy.smart_speed_active = false;
for (j = 0; j < IXGBE_SMARTSPEED_MAX_RETRIES; j++) {
status = ixgbe_setup_mac_link_82599(hw, speed, autoneg,
autoneg_wait_to_complete);
if (status != 0)
goto out;
/*
* Wait for the controller to acquire link. Per IEEE 802.3ap,
* Section 73.10.2, we may have to wait up to 500ms if KR is
* attempted, or 200ms if KX/KX4/BX/BX4 is attempted, per
* Table 9 in the AN MAS.
*/
for (i = 0; i < 5; i++) {
msleep(100);
/* If we have link, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up,
false);
if (status != 0)
goto out;
if (link_up)
goto out;
}
}
/*
* We didn't get link. If we advertised KR plus one of KX4/KX
* (or BX4/BX), then disable KR and try again.
*/
if (((autoc_reg & IXGBE_AUTOC_KR_SUPP) == 0) ||
((autoc_reg & IXGBE_AUTOC_KX4_KX_SUPP_MASK) == 0))
goto out;
/* Turn SmartSpeed on to disable KR support */
hw->phy.smart_speed_active = true;
status = ixgbe_setup_mac_link_82599(hw, speed, autoneg,
autoneg_wait_to_complete);
if (status != 0)
goto out;
/*
* Wait for the controller to acquire link. 600ms will allow for
* the AN link_fail_inhibit_timer as well for multiple cycles of
* parallel detect, both 10g and 1g. This allows for the maximum
* connect attempts as defined in the AN MAS table 73-7.
*/
for (i = 0; i < 6; i++) {
msleep(100);
/* If we have link, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up, false);
if (status != 0)
goto out;
if (link_up)
goto out;
}
/* We didn't get link. Turn SmartSpeed back off. */
hw->phy.smart_speed_active = false;
status = ixgbe_setup_mac_link_82599(hw, speed, autoneg,
autoneg_wait_to_complete);
out:
if (link_up && (link_speed == IXGBE_LINK_SPEED_1GB_FULL))
hw_dbg(hw, "Smartspeed has downgraded the link speed "
"from the maximum advertised\n");
return status;
}
/**
* ixgbe_setup_mac_link_82599 - Set MAC link speed
* @hw: pointer to hardware structure
* @speed: new link speed
* @autoneg: true if autonegotiation enabled
* @autoneg_wait_to_complete: true when waiting for completion is needed
*
* Set the link speed in the AUTOC register and restarts link.
**/
s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
ixgbe_link_speed speed, bool autoneg,
bool autoneg_wait_to_complete)
{
s32 status = 0;
u32 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
u32 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
u32 start_autoc = autoc;
u32 orig_autoc = 0;
u32 link_mode = autoc & IXGBE_AUTOC_LMS_MASK;
u32 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK;
u32 pma_pmd_10g_serial = autoc2 & IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_MASK;
u32 links_reg = 0;
u32 i;
ixgbe_link_speed link_capabilities = IXGBE_LINK_SPEED_UNKNOWN;
/* Check to see if speed passed in is supported. */
status = ixgbe_get_link_capabilities(hw, &link_capabilities, &autoneg);
if (status != 0)
goto out;
speed &= link_capabilities;
if (speed == IXGBE_LINK_SPEED_UNKNOWN) {
status = IXGBE_ERR_LINK_SETUP;
goto out;
}
/* Use stored value (EEPROM defaults) of AUTOC to find KR/KX4 support*/
if (hw->mac.orig_link_settings_stored)
orig_autoc = hw->mac.orig_autoc;
else
orig_autoc = autoc;
if (link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR ||
link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
/* Set KX4/KX/KR support according to speed requested */
autoc &= ~(IXGBE_AUTOC_KX4_KX_SUPP_MASK | IXGBE_AUTOC_KR_SUPP);
if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
if (orig_autoc & IXGBE_AUTOC_KX4_SUPP)
autoc |= IXGBE_AUTOC_KX4_SUPP;
if ((orig_autoc & IXGBE_AUTOC_KR_SUPP) &&
(hw->phy.smart_speed_active == false))
autoc |= IXGBE_AUTOC_KR_SUPP;
}
if (speed & IXGBE_LINK_SPEED_1GB_FULL)
autoc |= IXGBE_AUTOC_KX_SUPP;
} else if ((pma_pmd_1g == IXGBE_AUTOC_1G_SFI) &&
(link_mode == IXGBE_AUTOC_LMS_1G_LINK_NO_AN ||
link_mode == IXGBE_AUTOC_LMS_1G_AN)) {
/* Switch from 1G SFI to 10G SFI if requested */
if ((speed == IXGBE_LINK_SPEED_10GB_FULL) &&
(pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI)) {
autoc &= ~IXGBE_AUTOC_LMS_MASK;
autoc |= IXGBE_AUTOC_LMS_10G_SERIAL;
}
} else if ((pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI) &&
(link_mode == IXGBE_AUTOC_LMS_10G_SERIAL)) {
/* Switch from 10G SFI to 1G SFI if requested */
if ((speed == IXGBE_LINK_SPEED_1GB_FULL) &&
(pma_pmd_1g == IXGBE_AUTOC_1G_SFI)) {
autoc &= ~IXGBE_AUTOC_LMS_MASK;
if (autoneg)
autoc |= IXGBE_AUTOC_LMS_1G_AN;
else
autoc |= IXGBE_AUTOC_LMS_1G_LINK_NO_AN;
}
}
if (autoc != start_autoc) {
/* Restart link */
autoc |= IXGBE_AUTOC_AN_RESTART;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
/* Only poll for autoneg to complete if specified to do so */
if (autoneg_wait_to_complete) {
if (link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR ||
link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
links_reg =
IXGBE_READ_REG(hw, IXGBE_LINKS);
if (links_reg & IXGBE_LINKS_KX_AN_COMP)
break;
msleep(100);
}
if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
status =
IXGBE_ERR_AUTONEG_NOT_COMPLETE;
hw_dbg(hw, "Autoneg did not complete.\n");
}
}
}
/* Add delay to filter out noises during initial link setup */
msleep(50);
}
out:
return status;
}
/**
* ixgbe_setup_copper_link_82599 - Set the PHY autoneg advertised field
* @hw: pointer to hardware structure
* @speed: new link speed
* @autoneg: true if autonegotiation enabled
* @autoneg_wait_to_complete: true if waiting is needed to complete
*
* Restarts link on PHY and MAC based on settings passed in.
**/
static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
bool autoneg,
bool autoneg_wait_to_complete)
{
s32 status;
/* Setup the PHY according to input speed */
status = hw->phy.ops.setup_link_speed(hw, speed, autoneg,
autoneg_wait_to_complete);
/* Set up MAC */
ixgbe_start_mac_link_82599(hw, autoneg_wait_to_complete);
return status;
}
/**
* ixgbe_reset_hw_82599 - Perform hardware reset
* @hw: pointer to hardware structure
*
* Resets the hardware by resetting the transmit and receive units, masks
* and clears all interrupts, perform a PHY reset, and perform a link (MAC)
* reset.
**/
s32 ixgbe_reset_hw_82599(struct ixgbe_hw *hw)
{
// ixgbe_link_speed link_speed;
s32 status = 0;
// u32 ctrl, i, autoc, autoc2;
// bool link_up = false;
#if 0
/* Call adapter stop to disable tx/rx and clear interrupts */
status = hw->mac.ops.stop_adapter(hw);
if (status != 0)
goto reset_hw_out;
/* flush pending Tx transactions */
ixgbe_clear_tx_pending(hw);
/* PHY ops must be identified and initialized prior to reset */
/* Identify PHY and related function pointers */
status = hw->phy.ops.init(hw);
if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
goto reset_hw_out;
/* Setup SFP module if there is one present. */
if (hw->phy.sfp_setup_needed) {
status = hw->mac.ops.setup_sfp(hw);
hw->phy.sfp_setup_needed = false;
}
if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
goto reset_hw_out;
/* Reset PHY */
if (hw->phy.reset_disable == false && hw->phy.ops.reset != NULL)
hw->phy.ops.reset(hw);
mac_reset_top:
/*
* Issue global reset to the MAC. Needs to be SW reset if link is up.
* If link reset is used when link is up, it might reset the PHY when
* mng is using it. If link is down or the flag to force full link
* reset is set, then perform link reset.
*/
ctrl = IXGBE_CTRL_LNK_RST;
if (!hw->force_full_reset) {
hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
if (link_up)
ctrl = IXGBE_CTRL_RST;
}
ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
IXGBE_WRITE_FLUSH(hw);
/* Poll for reset bit to self-clear indicating reset is complete */
for (i = 0; i < 10; i++) {
udelay(1);
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
if (!(ctrl & IXGBE_CTRL_RST_MASK))
break;
}
if (ctrl & IXGBE_CTRL_RST_MASK) {
status = IXGBE_ERR_RESET_FAILED;
hw_dbg(hw, "Reset polling failed to complete.\n");
}
msleep(50);
/*
* Double resets are required for recovery from certain error
* conditions. Between resets, it is necessary to stall to allow time
* for any pending HW events to complete.
*/
if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
goto mac_reset_top;
}
/*
* Store the original AUTOC/AUTOC2 values if they have not been
* stored off yet. Otherwise restore the stored original
* values since the reset operation sets back to defaults.
*/
autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
if (hw->mac.orig_link_settings_stored == false) {
hw->mac.orig_autoc = autoc;
hw->mac.orig_autoc2 = autoc2;
hw->mac.orig_link_settings_stored = true;
} else {
if (autoc != hw->mac.orig_autoc)
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, (hw->mac.orig_autoc |
IXGBE_AUTOC_AN_RESTART));
if ((autoc2 & IXGBE_AUTOC2_UPPER_MASK) !=
(hw->mac.orig_autoc2 & IXGBE_AUTOC2_UPPER_MASK)) {
autoc2 &= ~IXGBE_AUTOC2_UPPER_MASK;
autoc2 |= (hw->mac.orig_autoc2 &
IXGBE_AUTOC2_UPPER_MASK);
IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2);
}
}
#endif
/* Store the permanent mac address */
hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
/*
* Store MAC address from RAR0, clear receive address registers, and
* clear the multicast table. Also reset num_rar_entries to 128,
* since we modify this value when programming the SAN MAC address.
*/
hw->mac.num_rar_entries = 128;
hw->mac.ops.init_rx_addrs(hw);
/* Store the permanent SAN mac address */
hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
/* Add the SAN MAC address to the RAR only if it's a valid address */
if (ixgbe_validate_mac_addr(hw->mac.san_addr) == 0) {
hw->mac.ops.set_rar(hw, hw->mac.num_rar_entries - 1,
hw->mac.san_addr, 0, IXGBE_RAH_AV);
/* Save the SAN MAC RAR index */
hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
/* Reserve the last RAR for the SAN MAC address */
hw->mac.num_rar_entries--;
}
/* Store the alternative WWNN/WWPN prefix */
hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
&hw->mac.wwpn_prefix);
//reset_hw_out:
return status;
}
/**
* ixgbe_reinit_fdir_tables_82599 - Reinitialize Flow Director tables.
* @hw: pointer to hardware structure
**/
s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw)
{
int i;
u32 fdirctrl = IXGBE_READ_REG(hw, IXGBE_FDIRCTRL);
fdirctrl &= ~IXGBE_FDIRCTRL_INIT_DONE;
/*
* Before starting reinitialization process,
* FDIRCMD.CMD must be zero.
*/
for (i = 0; i < IXGBE_FDIRCMD_CMD_POLL; i++) {
if (!(IXGBE_READ_REG(hw, IXGBE_FDIRCMD) &
IXGBE_FDIRCMD_CMD_MASK))
break;
udelay(10);
}
if (i >= IXGBE_FDIRCMD_CMD_POLL) {
hw_dbg(hw, "Flow Director previous command isn't complete, "
"aborting table re-initialization.\n");
return IXGBE_ERR_FDIR_REINIT_FAILED;
}
IXGBE_WRITE_REG(hw, IXGBE_FDIRFREE, 0);
IXGBE_WRITE_FLUSH(hw);
/*
* 82599 adapters flow director init flow cannot be restarted,
* Workaround 82599 silicon errata by performing the following steps
* before re-writing the FDIRCTRL control register with the same value.
* - write 1 to bit 8 of FDIRCMD register &
* - write 0 to bit 8 of FDIRCMD register
*/
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
(IXGBE_READ_REG(hw, IXGBE_FDIRCMD) |
IXGBE_FDIRCMD_CLEARHT));
IXGBE_WRITE_FLUSH(hw);
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
(IXGBE_READ_REG(hw, IXGBE_FDIRCMD) &
~IXGBE_FDIRCMD_CLEARHT));
IXGBE_WRITE_FLUSH(hw);
/*
* Clear FDIR Hash register to clear any leftover hashes
* waiting to be programmed.
*/
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, 0x00);
IXGBE_WRITE_FLUSH(hw);
IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
IXGBE_WRITE_FLUSH(hw);
/* Poll init-done after we write FDIRCTRL register */
for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
IXGBE_FDIRCTRL_INIT_DONE)
break;
udelay(10);
}
if (i >= IXGBE_FDIR_INIT_DONE_POLL) {
hw_dbg(hw, "Flow Director Signature poll time exceeded!\n");
return IXGBE_ERR_FDIR_REINIT_FAILED;
}
/* Clear FDIR statistics registers (read to clear) */
IXGBE_READ_REG(hw, IXGBE_FDIRUSTAT);
IXGBE_READ_REG(hw, IXGBE_FDIRFSTAT);
IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
IXGBE_READ_REG(hw, IXGBE_FDIRLEN);
return 0;
}
/**
* ixgbe_fdir_enable_82599 - Initialize Flow Director control registers
* @hw: pointer to hardware structure
* @fdirctrl: value to write to flow director control register
**/
static void ixgbe_fdir_enable_82599(struct ixgbe_hw *hw, u32 fdirctrl)
{
int i;
/* Prime the keys for hashing */
IXGBE_WRITE_REG(hw, IXGBE_FDIRHKEY, IXGBE_ATR_BUCKET_HASH_KEY);
IXGBE_WRITE_REG(hw, IXGBE_FDIRSKEY, IXGBE_ATR_SIGNATURE_HASH_KEY);
/*
* Poll init-done after we write the register. Estimated times:
* 10G: PBALLOC = 11b, timing is 60us
* 1G: PBALLOC = 11b, timing is 600us
* 100M: PBALLOC = 11b, timing is 6ms
*
* Multiple these timings by 4 if under full Rx load
*
* So we'll poll for IXGBE_FDIR_INIT_DONE_POLL times, sleeping for
* 1 msec per poll time. If we're at line rate and drop to 100M, then
* this might not finish in our poll time, but we can live with that
* for now.
*/
IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
IXGBE_WRITE_FLUSH(hw);
for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
IXGBE_FDIRCTRL_INIT_DONE)
break;
msleep(1);
}
if (i >= IXGBE_FDIR_INIT_DONE_POLL)
hw_dbg(hw, "Flow Director poll time exceeded!\n");
}
/**
* ixgbe_init_fdir_signature_82599 - Initialize Flow Director signature filters
* @hw: pointer to hardware structure
* @fdirctrl: value to write to flow director control register, initially
* contains just the value of the Rx packet buffer allocation
**/
s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 fdirctrl)
{
/*
* Continue setup of fdirctrl register bits:
* Move the flexible bytes to use the ethertype - shift 6 words
* Set the maximum length per hash bucket to 0xA filters
* Send interrupt when 64 filters are left
*/
fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
(0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
(4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
/* write hashes and fdirctrl register, poll for completion */
ixgbe_fdir_enable_82599(hw, fdirctrl);
return 0;
}
/**
* ixgbe_init_fdir_perfect_82599 - Initialize Flow Director perfect filters
* @hw: pointer to hardware structure
* @fdirctrl: value to write to flow director control register, initially
* contains just the value of the Rx packet buffer allocation
**/
s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl)
{
/*
* Continue setup of fdirctrl register bits:
* Turn perfect match filtering on
* Report hash in RSS field of Rx wb descriptor
* Initialize the drop queue
* Move the flexible bytes to use the ethertype - shift 6 words
* Set the maximum length per hash bucket to 0xA filters
* Send interrupt when 64 (0x4 * 16) filters are left
*/
fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH |
IXGBE_FDIRCTRL_REPORT_STATUS |
(IXGBE_FDIR_DROP_QUEUE << IXGBE_FDIRCTRL_DROP_Q_SHIFT) |
(0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
(0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
(4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
/* write hashes and fdirctrl register, poll for completion */
ixgbe_fdir_enable_82599(hw, fdirctrl);
return 0;
}
/*
* These defines allow us to quickly generate all of the necessary instructions
* in the function below by simply calling out IXGBE_COMPUTE_SIG_HASH_ITERATION
* for values 0 through 15
*/
#define IXGBE_ATR_COMMON_HASH_KEY \
(IXGBE_ATR_BUCKET_HASH_KEY & IXGBE_ATR_SIGNATURE_HASH_KEY)
#define IXGBE_COMPUTE_SIG_HASH_ITERATION(_n) \
do { \
u32 n = (_n); \
if (IXGBE_ATR_COMMON_HASH_KEY & (0x01 << n)) \
common_hash ^= lo_hash_dword >> n; \
else if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << n)) \
bucket_hash ^= lo_hash_dword >> n; \
else if (IXGBE_ATR_SIGNATURE_HASH_KEY & (0x01 << n)) \
sig_hash ^= lo_hash_dword << (16 - n); \
if (IXGBE_ATR_COMMON_HASH_KEY & (0x01 << (n + 16))) \
common_hash ^= hi_hash_dword >> n; \
else if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << (n + 16))) \
bucket_hash ^= hi_hash_dword >> n; \
else if (IXGBE_ATR_SIGNATURE_HASH_KEY & (0x01 << (n + 16))) \
sig_hash ^= hi_hash_dword << (16 - n); \
} while (0);
/**
* ixgbe_atr_compute_sig_hash_82599 - Compute the signature hash
* @stream: input bitstream to compute the hash on
*
* This function is almost identical to the function above but contains
* several optomizations such as unwinding all of the loops, letting the
* compiler work out all of the conditional ifs since the keys are static
* defines, and computing two keys at once since the hashed dword stream
* will be the same for both keys.
**/
u32 ixgbe_atr_compute_sig_hash_82599(union ixgbe_atr_hash_dword input,
union ixgbe_atr_hash_dword common)
{
u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
u32 sig_hash = 0, bucket_hash = 0, common_hash = 0;
/* record the flow_vm_vlan bits as they are a key part to the hash */
flow_vm_vlan = IXGBE_NTOHL(input.dword);
/* generate common hash dword */
hi_hash_dword = IXGBE_NTOHL(common.dword);
/* low dword is word swapped version of common */
lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
/* apply flow ID/VM pool/VLAN ID bits to hash words */
hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
/* Process bits 0 and 16 */
IXGBE_COMPUTE_SIG_HASH_ITERATION(0);
/*
* apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
* delay this because bit 0 of the stream should not be processed
* so we do not add the vlan until after bit 0 was processed
*/
lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
/* Process remaining 30 bit of the key */
IXGBE_COMPUTE_SIG_HASH_ITERATION(1);
IXGBE_COMPUTE_SIG_HASH_ITERATION(2);
IXGBE_COMPUTE_SIG_HASH_ITERATION(3);
IXGBE_COMPUTE_SIG_HASH_ITERATION(4);
IXGBE_COMPUTE_SIG_HASH_ITERATION(5);
IXGBE_COMPUTE_SIG_HASH_ITERATION(6);
IXGBE_COMPUTE_SIG_HASH_ITERATION(7);
IXGBE_COMPUTE_SIG_HASH_ITERATION(8);
IXGBE_COMPUTE_SIG_HASH_ITERATION(9);
IXGBE_COMPUTE_SIG_HASH_ITERATION(10);
IXGBE_COMPUTE_SIG_HASH_ITERATION(11);
IXGBE_COMPUTE_SIG_HASH_ITERATION(12);
IXGBE_COMPUTE_SIG_HASH_ITERATION(13);
IXGBE_COMPUTE_SIG_HASH_ITERATION(14);
IXGBE_COMPUTE_SIG_HASH_ITERATION(15);
/* combine common_hash result with signature and bucket hashes */
bucket_hash ^= common_hash;
bucket_hash &= IXGBE_ATR_HASH_MASK;
sig_hash ^= common_hash << 16;
sig_hash &= IXGBE_ATR_HASH_MASK << 16;
/* return completed signature hash */
return sig_hash ^ bucket_hash;
}
/**
* ixgbe_atr_add_signature_filter_82599 - Adds a signature hash filter
* @hw: pointer to hardware structure
* @input: unique input dword
* @common: compressed common input dword
* @queue: queue index to direct traffic to
**/
s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_hash_dword input,
union ixgbe_atr_hash_dword common,
u8 queue)
{
u64 fdirhashcmd;
u32 fdircmd;
/*
* Get the flow_type in order to program FDIRCMD properly
* lowest 2 bits are FDIRCMD.L4TYPE, third lowest bit is FDIRCMD.IPV6
*/
switch (input.formatted.flow_type) {
case IXGBE_ATR_FLOW_TYPE_TCPV4:
case IXGBE_ATR_FLOW_TYPE_UDPV4:
case IXGBE_ATR_FLOW_TYPE_SCTPV4:
case IXGBE_ATR_FLOW_TYPE_TCPV6:
case IXGBE_ATR_FLOW_TYPE_UDPV6:
case IXGBE_ATR_FLOW_TYPE_SCTPV6:
break;
default:
hw_dbg(hw, " Error on flow type input\n");
return IXGBE_ERR_CONFIG;
}
/* configure FDIRCMD register */
fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
fdircmd |= input.formatted.flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
/*
* The lower 32-bits of fdirhashcmd is for FDIRHASH, the upper 32-bits
* is for FDIRCMD. Then do a 64-bit register write from FDIRHASH.
*/
fdirhashcmd = (u64)fdircmd << 32;
fdirhashcmd |= ixgbe_atr_compute_sig_hash_82599(input, common);
IXGBE_WRITE_REG64(hw, IXGBE_FDIRHASH, fdirhashcmd);
hw_dbg(hw, "Tx Queue=%x hash=%x\n", queue, (u32)fdirhashcmd);
return 0;
}
#define IXGBE_COMPUTE_BKT_HASH_ITERATION(_n) \
do { \
u32 n = (_n); \
if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << n)) \
bucket_hash ^= lo_hash_dword >> n; \
if (IXGBE_ATR_BUCKET_HASH_KEY & (0x01 << (n + 16))) \
bucket_hash ^= hi_hash_dword >> n; \
} while (0);
/**
* ixgbe_atr_compute_perfect_hash_82599 - Compute the perfect filter hash
* @atr_input: input bitstream to compute the hash on
* @input_mask: mask for the input bitstream
*
* This function serves two main purposes. First it applys the input_mask
* to the atr_input resulting in a cleaned up atr_input data stream.
* Secondly it computes the hash and stores it in the bkt_hash field at
* the end of the input byte stream. This way it will be available for
* future use without needing to recompute the hash.
**/
void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
union ixgbe_atr_input *input_mask)
{
u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
u32 bucket_hash = 0;
/* Apply masks to input data */
input->dword_stream[0] &= input_mask->dword_stream[0];
input->dword_stream[1] &= input_mask->dword_stream[1];
input->dword_stream[2] &= input_mask->dword_stream[2];
input->dword_stream[3] &= input_mask->dword_stream[3];
input->dword_stream[4] &= input_mask->dword_stream[4];
input->dword_stream[5] &= input_mask->dword_stream[5];
input->dword_stream[6] &= input_mask->dword_stream[6];
input->dword_stream[7] &= input_mask->dword_stream[7];
input->dword_stream[8] &= input_mask->dword_stream[8];
input->dword_stream[9] &= input_mask->dword_stream[9];
input->dword_stream[10] &= input_mask->dword_stream[10];
/* record the flow_vm_vlan bits as they are a key part to the hash */
flow_vm_vlan = IXGBE_NTOHL(input->dword_stream[0]);
/* generate common hash dword */
hi_hash_dword = IXGBE_NTOHL(input->dword_stream[1] ^
input->dword_stream[2] ^
input->dword_stream[3] ^
input->dword_stream[4] ^
input->dword_stream[5] ^
input->dword_stream[6] ^
input->dword_stream[7] ^
input->dword_stream[8] ^
input->dword_stream[9] ^
input->dword_stream[10]);
/* low dword is word swapped version of common */
lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
/* apply flow ID/VM pool/VLAN ID bits to hash words */
hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
/* Process bits 0 and 16 */
IXGBE_COMPUTE_BKT_HASH_ITERATION(0);
/*
* apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
* delay this because bit 0 of the stream should not be processed
* so we do not add the vlan until after bit 0 was processed
*/
lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
/* Process remaining 30 bit of the key */
IXGBE_COMPUTE_BKT_HASH_ITERATION(1);
IXGBE_COMPUTE_BKT_HASH_ITERATION(2);
IXGBE_COMPUTE_BKT_HASH_ITERATION(3);
IXGBE_COMPUTE_BKT_HASH_ITERATION(4);
IXGBE_COMPUTE_BKT_HASH_ITERATION(5);
IXGBE_COMPUTE_BKT_HASH_ITERATION(6);
IXGBE_COMPUTE_BKT_HASH_ITERATION(7);
IXGBE_COMPUTE_BKT_HASH_ITERATION(8);
IXGBE_COMPUTE_BKT_HASH_ITERATION(9);
IXGBE_COMPUTE_BKT_HASH_ITERATION(10);
IXGBE_COMPUTE_BKT_HASH_ITERATION(11);
IXGBE_COMPUTE_BKT_HASH_ITERATION(12);
IXGBE_COMPUTE_BKT_HASH_ITERATION(13);
IXGBE_COMPUTE_BKT_HASH_ITERATION(14);
IXGBE_COMPUTE_BKT_HASH_ITERATION(15);
/*
* Limit hash to 13 bits since max bucket count is 8K.
* Store result at the end of the input stream.
*/
input->formatted.bkt_hash = bucket_hash & 0x1FFF;
}
/**
* ixgbe_get_fdirtcpm_82599 - generate a tcp port from atr_input_masks
* @input_mask: mask to be bit swapped
*
* The source and destination port masks for flow director are bit swapped
* in that bit 15 effects bit 0, 14 effects 1, 13, 2 etc. In order to
* generate a correctly swapped value we need to bit swap the mask and that
* is what is accomplished by this function.
**/
static u32 ixgbe_get_fdirtcpm_82599(union ixgbe_atr_input *input_mask)
{
u32 mask = IXGBE_NTOHS(input_mask->formatted.dst_port);
mask <<= IXGBE_FDIRTCPM_DPORTM_SHIFT;
mask |= IXGBE_NTOHS(input_mask->formatted.src_port);
mask = ((mask & 0x55555555) << 1) | ((mask & 0xAAAAAAAA) >> 1);
mask = ((mask & 0x33333333) << 2) | ((mask & 0xCCCCCCCC) >> 2);
mask = ((mask & 0x0F0F0F0F) << 4) | ((mask & 0xF0F0F0F0) >> 4);
return ((mask & 0x00FF00FF) << 8) | ((mask & 0xFF00FF00) >> 8);
}
/*
* These two macros are meant to address the fact that we have registers
* that are either all or in part big-endian. As a result on big-endian
* systems we will end up byte swapping the value to little-endian before
* it is byte swapped again and written to the hardware in the original
* big-endian format.
*/
#define IXGBE_STORE_AS_BE32(_value) \
(((u32)(_value) >> 24) | (((u32)(_value) & 0x00FF0000) >> 8) | \
(((u32)(_value) & 0x0000FF00) << 8) | ((u32)(_value) << 24))
#define IXGBE_WRITE_REG_BE32(a, reg, value) \
IXGBE_WRITE_REG((a), (reg), IXGBE_STORE_AS_BE32(IXGBE_NTOHL(value)))
#define IXGBE_STORE_AS_BE16(_value) \
IXGBE_NTOHS(((u16)(_value) >> 8) | ((u16)(_value) << 8))
s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input_mask)
{
/* mask IPv6 since it is currently not supported */
u32 fdirm = IXGBE_FDIRM_DIPv6;
u32 fdirtcpm;
/*
* Program the relevant mask registers. If src/dst_port or src/dst_addr
* are zero, then assume a full mask for that field. Also assume that
* a VLAN of 0 is unspecified, so mask that out as well. L4type
* cannot be masked out in this implementation.
*
* This also assumes IPv4 only. IPv6 masking isn't supported at this
* point in time.
*/
/* verify bucket hash is cleared on hash generation */
if (input_mask->formatted.bkt_hash)
hw_dbg(hw, " bucket hash should always be 0 in mask\n");
/* Program FDIRM and verify partial masks */
switch (input_mask->formatted.vm_pool & 0x7F) {
case 0x0:
fdirm |= IXGBE_FDIRM_POOL;
case 0x7F:
break;
default:
hw_dbg(hw, " Error on vm pool mask\n");
return IXGBE_ERR_CONFIG;
}
switch (input_mask->formatted.flow_type & IXGBE_ATR_L4TYPE_MASK) {
case 0x0:
fdirm |= IXGBE_FDIRM_L4P;
if (input_mask->formatted.dst_port ||
input_mask->formatted.src_port) {
hw_dbg(hw, " Error on src/dst port mask\n");
return IXGBE_ERR_CONFIG;
}
case IXGBE_ATR_L4TYPE_MASK:
break;
default:
hw_dbg(hw, " Error on flow type mask\n");
return IXGBE_ERR_CONFIG;
}
switch (IXGBE_NTOHS(input_mask->formatted.vlan_id) & 0xEFFF) {
case 0x0000:
/* mask VLAN ID, fall through to mask VLAN priority */
fdirm |= IXGBE_FDIRM_VLANID;
case 0x0FFF:
/* mask VLAN priority */
fdirm |= IXGBE_FDIRM_VLANP;
break;
case 0xE000:
/* mask VLAN ID only, fall through */
fdirm |= IXGBE_FDIRM_VLANID;
case 0xEFFF:
/* no VLAN fields masked */
break;
default:
hw_dbg(hw, " Error on VLAN mask\n");
return IXGBE_ERR_CONFIG;
}
switch (input_mask->formatted.flex_bytes & 0xFFFF) {
case 0x0000:
/* Mask Flex Bytes, fall through */
fdirm |= IXGBE_FDIRM_FLEX;
case 0xFFFF:
break;
default:
hw_dbg(hw, " Error on flexible byte mask\n");
return IXGBE_ERR_CONFIG;
}
/* Now mask VM pool and destination IPv6 - bits 5 and 2 */
IXGBE_WRITE_REG(hw, IXGBE_FDIRM, fdirm);
/* store the TCP/UDP port masks, bit reversed from port layout */
fdirtcpm = ixgbe_get_fdirtcpm_82599(input_mask);
/* write both the same so that UDP and TCP use the same mask */
IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM, ~fdirtcpm);
IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM, ~fdirtcpm);
/* store source and destination IP masks (big-enian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIP4M,
~input_mask->formatted.src_ip[0]);
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRDIP4M,
~input_mask->formatted.dst_ip[0]);
return 0;
}
s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input,
u16 soft_id, u8 queue)
{
u32 fdirport, fdirvlan, fdirhash, fdircmd;
/* currently IPv6 is not supported, must be programmed with 0 */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(0),
input->formatted.src_ip[0]);
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(1),
input->formatted.src_ip[1]);
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(2),
input->formatted.src_ip[2]);
/* record the source address (big-endian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPSA, input->formatted.src_ip[0]);
/* record the first 32 bits of the destination address (big-endian) */
IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPDA, input->formatted.dst_ip[0]);
/* record source and destination port (little-endian)*/
fdirport = IXGBE_NTOHS(input->formatted.dst_port);
fdirport <<= IXGBE_FDIRPORT_DESTINATION_SHIFT;
fdirport |= IXGBE_NTOHS(input->formatted.src_port);
IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, fdirport);
/* record vlan (little-endian) and flex_bytes(big-endian) */
fdirvlan = IXGBE_STORE_AS_BE16(input->formatted.flex_bytes);
fdirvlan <<= IXGBE_FDIRVLAN_FLEX_SHIFT;
fdirvlan |= IXGBE_NTOHS(input->formatted.vlan_id);
IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, fdirvlan);
/* configure FDIRHASH register */
fdirhash = input->formatted.bkt_hash;
fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
/*
* flush all previous writes to make certain registers are
* programmed prior to issuing the command
*/
IXGBE_WRITE_FLUSH(hw);
/* configure FDIRCMD register */
fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
if (queue == IXGBE_FDIR_DROP_QUEUE)
fdircmd |= IXGBE_FDIRCMD_DROP;
fdircmd |= input->formatted.flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
fdircmd |= (u32)input->formatted.vm_pool << IXGBE_FDIRCMD_VT_POOL_SHIFT;
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, fdircmd);
return 0;
}
s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input,
u16 soft_id)
{
u32 fdirhash;
u32 fdircmd = 0;
u32 retry_count;
s32 err = 0;
/* configure FDIRHASH register */
fdirhash = input->formatted.bkt_hash;
fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
/* flush hash to HW */
IXGBE_WRITE_FLUSH(hw);
/* Query if filter is present */
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, IXGBE_FDIRCMD_CMD_QUERY_REM_FILT);
for (retry_count = 10; retry_count; retry_count--) {
/* allow 10us for query to process */
udelay(10);
/* verify query completed successfully */
fdircmd = IXGBE_READ_REG(hw, IXGBE_FDIRCMD);
if (!(fdircmd & IXGBE_FDIRCMD_CMD_MASK))
break;
}
if (!retry_count)
err = IXGBE_ERR_FDIR_REINIT_FAILED;
/* if filter exists in hardware then remove it */
if (fdircmd & IXGBE_FDIRCMD_FILTER_VALID) {
IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
IXGBE_WRITE_FLUSH(hw);
IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
IXGBE_FDIRCMD_CMD_REMOVE_FLOW);
}
return err;
}
/**
* ixgbe_fdir_add_perfect_filter_82599 - Adds a perfect filter
* @hw: pointer to hardware structure
* @input: input bitstream
* @input_mask: mask for the input bitstream
* @soft_id: software index for the filters
* @queue: queue index to direct traffic to
*
* Note that the caller to this function must lock before calling, since the
* hardware writes must be protected from one another.
**/
s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
union ixgbe_atr_input *input,
union ixgbe_atr_input *input_mask,
u16 soft_id, u8 queue)
{
s32 err = IXGBE_ERR_CONFIG;
/*
* Check flow_type formatting, and bail out before we touch the hardware
* if there's a configuration issue
*/
switch (input->formatted.flow_type) {
case IXGBE_ATR_FLOW_TYPE_IPV4:
input_mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK;
if (input->formatted.dst_port || input->formatted.src_port) {
hw_dbg(hw, " Error on src/dst port\n");
return IXGBE_ERR_CONFIG;
}
break;
case IXGBE_ATR_FLOW_TYPE_SCTPV4:
if (input->formatted.dst_port || input->formatted.src_port) {
hw_dbg(hw, " Error on src/dst port\n");
return IXGBE_ERR_CONFIG;
}
case IXGBE_ATR_FLOW_TYPE_TCPV4:
case IXGBE_ATR_FLOW_TYPE_UDPV4:
input_mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK |
IXGBE_ATR_L4TYPE_MASK;
break;
default:
hw_dbg(hw, " Error on flow type input\n");
return err;
}
/* program input mask into the HW */
err = ixgbe_fdir_set_input_mask_82599(hw, input_mask);
if (err)
return err;
/* apply mask and compute/store hash */
ixgbe_atr_compute_perfect_hash_82599(input, input_mask);
/* program filters to filter memory */
return ixgbe_fdir_write_perfect_filter_82599(hw, input,
soft_id, queue);
}
/**
* ixgbe_read_analog_reg8_82599 - Reads 8 bit Omer analog register
* @hw: pointer to hardware structure
* @reg: analog register to read
* @val: read value
*
* Performs read operation to Omer analog register specified.
**/
s32 ixgbe_read_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 *val)
{
u32 core_ctl;
IXGBE_WRITE_REG(hw, IXGBE_CORECTL, IXGBE_CORECTL_WRITE_CMD |
(reg << 8));
IXGBE_WRITE_FLUSH(hw);
udelay(10);
core_ctl = IXGBE_READ_REG(hw, IXGBE_CORECTL);
*val = (u8)core_ctl;
return 0;
}
/**
* ixgbe_write_analog_reg8_82599 - Writes 8 bit Omer analog register
* @hw: pointer to hardware structure
* @reg: atlas register to write
* @val: value to write
*
* Performs write operation to Omer analog register specified.
**/
s32 ixgbe_write_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 val)
{
u32 core_ctl;
core_ctl = (reg << 8) | val;
IXGBE_WRITE_REG(hw, IXGBE_CORECTL, core_ctl);
IXGBE_WRITE_FLUSH(hw);
udelay(10);
return 0;
}
/**
* ixgbe_start_hw_82599 - Prepare hardware for Tx/Rx
* @hw: pointer to hardware structure
*
* Starts the hardware using the generic start_hw function
* and the generation start_hw function.
* Then performs revision-specific operations, if any.
**/
s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw)
{
s32 ret_val = 0;
ret_val = ixgbe_start_hw_generic(hw);
if (ret_val != 0)
goto out;
ret_val = ixgbe_start_hw_gen2(hw);
if (ret_val != 0)
goto out;
/* We need to run link autotry after the driver loads */
hw->mac.autotry_restart = true;
if (ret_val == 0)
ret_val = ixgbe_verify_fw_version_82599(hw);
out:
return ret_val;
}
/**
* ixgbe_identify_phy_82599 - Get physical layer module
* @hw: pointer to hardware structure
*
* Determines the physical layer module found on the current adapter.
* If PHY already detected, maintains current PHY type in hw struct,
* otherwise executes the PHY detection routine.
**/
s32 ixgbe_identify_phy_82599(struct ixgbe_hw *hw)
{
s32 status = IXGBE_ERR_PHY_ADDR_INVALID;
/* Detect PHY if not unknown - returns success if already detected. */
status = ixgbe_identify_phy_generic(hw);
if (status != 0) {
/* 82599 10GBASE-T requires an external PHY */
if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_copper)
goto out;
else
status = ixgbe_identify_module_generic(hw);
}
/* Set PHY type none if no PHY detected */
if (hw->phy.type == ixgbe_phy_unknown) {
hw->phy.type = ixgbe_phy_none;
status = 0;
}
/* Return error if SFP module has been detected but is not supported */
if (hw->phy.type == ixgbe_phy_sfp_unsupported)
status = IXGBE_ERR_SFP_NOT_SUPPORTED;
out:
return status;
}
/**
* ixgbe_get_supported_physical_layer_82599 - Returns physical layer type
* @hw: pointer to hardware structure
*
* Determines physical layer capabilities of the current configuration.
**/
u32 ixgbe_get_supported_physical_layer_82599(struct ixgbe_hw *hw)
{
u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
u32 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
u32 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
u32 pma_pmd_10g_serial = autoc2 & IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_MASK;
u32 pma_pmd_10g_parallel = autoc & IXGBE_AUTOC_10G_PMA_PMD_MASK;
u32 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK;
u16 ext_ability = 0;
u8 comp_codes_10g = 0;
u8 comp_codes_1g = 0;
hw->phy.ops.identify(hw);
switch (hw->phy.type) {
case ixgbe_phy_tn:
case ixgbe_phy_cu_unknown:
hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY,
IXGBE_MDIO_PMA_PMD_DEV_TYPE, &ext_ability);
if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY)
physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY)
physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
if (ext_ability & IXGBE_MDIO_PHY_100BASETX_ABILITY)
physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
goto out;
default:
break;
}
switch (autoc & IXGBE_AUTOC_LMS_MASK) {
case IXGBE_AUTOC_LMS_1G_AN:
case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
if (pma_pmd_1g == IXGBE_AUTOC_1G_KX_BX) {
physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_KX |
IXGBE_PHYSICAL_LAYER_1000BASE_BX;
goto out;
} else
/* SFI mode so read SFP module */
goto sfp_check;
break;
case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
if (pma_pmd_10g_parallel == IXGBE_AUTOC_10G_CX4)
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_CX4;
else if (pma_pmd_10g_parallel == IXGBE_AUTOC_10G_KX4)
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KX4;
else if (pma_pmd_10g_parallel == IXGBE_AUTOC_10G_XAUI)
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_XAUI;
goto out;
break;
case IXGBE_AUTOC_LMS_10G_SERIAL:
if (pma_pmd_10g_serial == IXGBE_AUTOC2_10G_KR) {
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KR;
goto out;
} else if (pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI)
goto sfp_check;
break;
case IXGBE_AUTOC_LMS_KX4_KX_KR:
case IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN:
if (autoc & IXGBE_AUTOC_KX_SUPP)
physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_KX;
if (autoc & IXGBE_AUTOC_KX4_SUPP)
physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_KX4;
if (autoc & IXGBE_AUTOC_KR_SUPP)
physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_KR;
goto out;
break;
default:
goto out;
break;
}
sfp_check:
/* SFP check must be done last since DA modules are sometimes used to
* test KR mode - we need to id KR mode correctly before SFP module.
* Call identify_sfp because the pluggable module may have changed */
hw->phy.ops.identify_sfp(hw);
if (hw->phy.sfp_type == ixgbe_sfp_type_not_present)
goto out;
switch (hw->phy.type) {
case ixgbe_phy_sfp_passive_tyco:
case ixgbe_phy_sfp_passive_unknown:
physical_layer = IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU;
break;
case ixgbe_phy_sfp_ftl_active:
case ixgbe_phy_sfp_active_unknown:
physical_layer = IXGBE_PHYSICAL_LAYER_SFP_ACTIVE_DA;
break;
case ixgbe_phy_sfp_avago:
case ixgbe_phy_sfp_ftl:
case ixgbe_phy_sfp_intel:
case ixgbe_phy_sfp_unknown:
hw->phy.ops.read_i2c_eeprom(hw,
IXGBE_SFF_1GBE_COMP_CODES, &comp_codes_1g);
hw->phy.ops.read_i2c_eeprom(hw,
IXGBE_SFF_10GBE_COMP_CODES, &comp_codes_10g);
if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR;
else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR;
else if (comp_codes_1g & IXGBE_SFF_1GBASET_CAPABLE)
physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_T;
else if (comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE)
physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_SX;
break;
default:
break;
}
out:
return physical_layer;
}
/**
* ixgbe_enable_rx_dma_82599 - Enable the Rx DMA unit on 82599
* @hw: pointer to hardware structure
* @regval: register value to write to RXCTRL
*
* Enables the Rx DMA unit for 82599
**/
s32 ixgbe_enable_rx_dma_82599(struct ixgbe_hw *hw, u32 regval)
{
/*
* Workaround for 82599 silicon errata when enabling the Rx datapath.
* If traffic is incoming before we enable the Rx unit, it could hang
* the Rx DMA unit. Therefore, make sure the security engine is
* completely disabled prior to enabling the Rx unit.
*/
hw->mac.ops.disable_sec_rx_path(hw);
IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
hw->mac.ops.enable_sec_rx_path(hw);
return 0;
}
/**
* ixgbe_verify_fw_version_82599 - verify fw version for 82599
* @hw: pointer to hardware structure
*
* Verifies that installed the firmware version is 0.6 or higher
* for SFI devices. All 82599 SFI devices should have version 0.6 or higher.
*
* Returns IXGBE_ERR_EEPROM_VERSION if the FW is not present or
* if the FW version is not supported.
**/
static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw)
{
s32 status = IXGBE_ERR_EEPROM_VERSION;
u16 fw_offset, fw_ptp_cfg_offset;
u16 fw_version = 0;
/* firmware check is only necessary for SFI devices */
if (hw->phy.media_type != ixgbe_media_type_fiber) {
status = 0;
goto fw_version_out;
}
/* get the offset to the Firmware Module block */
hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset);
if ((fw_offset == 0) || (fw_offset == 0xFFFF))
goto fw_version_out;
/* get the offset to the Pass Through Patch Configuration block */
hw->eeprom.ops.read(hw, (fw_offset +
IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR),
&fw_ptp_cfg_offset);
if ((fw_ptp_cfg_offset == 0) || (fw_ptp_cfg_offset == 0xFFFF))
goto fw_version_out;
/* get the firmware version */
hw->eeprom.ops.read(hw, (fw_ptp_cfg_offset +
IXGBE_FW_PATCH_VERSION_4), &fw_version);
if (fw_version > 0x5)
status = 0;
fw_version_out:
return status;
}
/**
* ixgbe_verify_lesm_fw_enabled_82599 - Checks LESM FW module state.
* @hw: pointer to hardware structure
*
* Returns true if the LESM FW module is present and enabled. Otherwise
* returns false. Smart Speed must be disabled if LESM FW module is enabled.
**/
bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw)
{
bool lesm_enabled = false;
u16 fw_offset, fw_lesm_param_offset, fw_lesm_state;
s32 status;
/* get the offset to the Firmware Module block */
status = hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset);
if ((status != 0) ||
(fw_offset == 0) || (fw_offset == 0xFFFF))
goto out;
/* get the offset to the LESM Parameters block */
status = hw->eeprom.ops.read(hw, (fw_offset +
IXGBE_FW_LESM_PARAMETERS_PTR),
&fw_lesm_param_offset);
if ((status != 0) ||
(fw_lesm_param_offset == 0) || (fw_lesm_param_offset == 0xFFFF))
goto out;
/* get the lesm state word */
status = hw->eeprom.ops.read(hw, (fw_lesm_param_offset +
IXGBE_FW_LESM_STATE_1),
&fw_lesm_state);
if ((status == 0) &&
(fw_lesm_state & IXGBE_FW_LESM_STATE_ENABLED))
lesm_enabled = true;
out:
return lesm_enabled;
}
/**
* ixgbe_read_eeprom_buffer_82599 - Read EEPROM word(s) using
* fastest available method
*
* @hw: pointer to hardware structure
* @offset: offset of word in EEPROM to read
* @words: number of words
* @data: word(s) read from the EEPROM
*
* Retrieves 16 bit word(s) read from EEPROM
**/
static s32 ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw *hw, u16 offset,
u16 words, u16 *data)
{
struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
s32 ret_val = IXGBE_ERR_CONFIG;
/*
* If EEPROM is detected and can be addressed using 14 bits,
* use EERD otherwise use bit bang
*/
if ((eeprom->type == ixgbe_eeprom_spi) &&
(offset + (words - 1) <= IXGBE_EERD_MAX_ADDR))
ret_val = ixgbe_read_eerd_buffer_generic(hw, offset, words,
data);
else
ret_val = ixgbe_read_eeprom_buffer_bit_bang_generic(hw, offset,
words,
data);
return ret_val;
}
/**
* ixgbe_read_eeprom_82599 - Read EEPROM word using
* fastest available method
*
* @hw: pointer to hardware structure
* @offset: offset of word in the EEPROM to read
* @data: word read from the EEPROM
*
* Reads a 16 bit word from the EEPROM
**/
static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
u16 offset, u16 *data)
{
struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
s32 ret_val = IXGBE_ERR_CONFIG;
/*
* If EEPROM is detected and can be addressed using 14 bits,
* use EERD otherwise use bit bang
*/
if ((eeprom->type == ixgbe_eeprom_spi) &&
(offset <= IXGBE_EERD_MAX_ADDR))
ret_val = ixgbe_read_eerd_generic(hw, offset, data);
else
ret_val = ixgbe_read_eeprom_bit_bang_generic(hw, offset, data);
return ret_val;
}
/**
* ixgbe_read_i2c_byte_82599 - Reads 8 bit word over I2C
* @hw: pointer to hardware structure
* @byte_offset: byte offset to read
* @data: value read
*
* Performs byte read operation to SFP module's EEPROM over I2C interface at
* a specified device address.
**/
static s32 ixgbe_read_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
u8 dev_addr, u8 *data)
{
u32 esdp;
s32 status;
s32 timeout = 200;
if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
/* Acquire I2C bus ownership. */
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
esdp |= IXGBE_ESDP_SDP0;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
IXGBE_WRITE_FLUSH(hw);
while (timeout) {
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
if (esdp & IXGBE_ESDP_SDP1)
break;
msleep(5);
timeout--;
}
if (!timeout) {
hw_dbg(hw, "Driver can't access resource,"
" acquiring I2C bus timeout.\n");
status = IXGBE_ERR_I2C;
goto release_i2c_access;
}
}
status = ixgbe_read_i2c_byte_generic(hw, byte_offset, dev_addr, data);
release_i2c_access:
if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
/* Release I2C bus ownership. */
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
esdp &= ~IXGBE_ESDP_SDP0;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
IXGBE_WRITE_FLUSH(hw);
}
return status;
}
/**
* ixgbe_write_i2c_byte_82599 - Writes 8 bit word over I2C
* @hw: pointer to hardware structure
* @byte_offset: byte offset to write
* @data: value to write
*
* Performs byte write operation to SFP module's EEPROM over I2C interface at
* a specified device address.
**/
static s32 ixgbe_write_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
u8 dev_addr, u8 data)
{
u32 esdp;
s32 status;
s32 timeout = 200;
if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
/* Acquire I2C bus ownership. */
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
esdp |= IXGBE_ESDP_SDP0;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
IXGBE_WRITE_FLUSH(hw);
while (timeout) {
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
if (esdp & IXGBE_ESDP_SDP1)
break;
msleep(5);
timeout--;
}
if (!timeout) {
hw_dbg(hw, "Driver can't access resource,"
" acquiring I2C bus timeout.\n");
status = IXGBE_ERR_I2C;
goto release_i2c_access;
}
}
status = ixgbe_write_i2c_byte_generic(hw, byte_offset, dev_addr, data);
release_i2c_access:
if (hw->phy.qsfp_shared_i2c_bus == TRUE) {
/* Release I2C bus ownership. */
esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
esdp &= ~IXGBE_ESDP_SDP0;
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
IXGBE_WRITE_FLUSH(hw);
}
return status;
}
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