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| Current File : //usr/src/sys/dev/ixgbe/ixgbe_82598.c |
/******************************************************************************
Copyright (c) 2001-2012, Intel Corporation
All rights reserved.
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/*$FreeBSD: release/9.1.0/sys/dev/ixgbe/ixgbe_82598.c 238263 2012-07-08 20:39:00Z jfv $*/
#include "ixgbe_type.h"
#include "ixgbe_82598.h"
#include "ixgbe_api.h"
#include "ixgbe_common.h"
#include "ixgbe_phy.h"
static s32 ixgbe_get_link_capabilities_82598(struct ixgbe_hw *hw,
ixgbe_link_speed *speed,
bool *autoneg);
static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw);
static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw,
bool autoneg_wait_to_complete);
static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw,
ixgbe_link_speed *speed, bool *link_up,
bool link_up_wait_to_complete);
static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
bool autoneg,
bool autoneg_wait_to_complete);
static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
bool autoneg,
bool autoneg_wait_to_complete);
static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw);
static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq);
static s32 ixgbe_clear_vfta_82598(struct ixgbe_hw *hw);
static void ixgbe_set_rxpba_82598(struct ixgbe_hw *hw, int num_pb,
u32 headroom, int strategy);
/**
* ixgbe_set_pcie_completion_timeout - set pci-e completion timeout
* @hw: pointer to the HW structure
*
* The defaults for 82598 should be in the range of 50us to 50ms,
* however the hardware default for these parts is 500us to 1ms which is less
* than the 10ms recommended by the pci-e spec. To address this we need to
* increase the value to either 10ms to 250ms for capability version 1 config,
* or 16ms to 55ms for version 2.
**/
void ixgbe_set_pcie_completion_timeout(struct ixgbe_hw *hw)
{
u32 gcr = IXGBE_READ_REG(hw, IXGBE_GCR);
u16 pcie_devctl2;
/* only take action if timeout value is defaulted to 0 */
if (gcr & IXGBE_GCR_CMPL_TMOUT_MASK)
goto out;
/*
* if capababilities version is type 1 we can write the
* timeout of 10ms to 250ms through the GCR register
*/
if (!(gcr & IXGBE_GCR_CAP_VER2)) {
gcr |= IXGBE_GCR_CMPL_TMOUT_10ms;
goto out;
}
/*
* for version 2 capabilities we need to write the config space
* directly in order to set the completion timeout value for
* 16ms to 55ms
*/
pcie_devctl2 = IXGBE_READ_PCIE_WORD(hw, IXGBE_PCI_DEVICE_CONTROL2);
pcie_devctl2 |= IXGBE_PCI_DEVICE_CONTROL2_16ms;
IXGBE_WRITE_PCIE_WORD(hw, IXGBE_PCI_DEVICE_CONTROL2, pcie_devctl2);
out:
/* disable completion timeout resend */
gcr &= ~IXGBE_GCR_CMPL_TMOUT_RESEND;
IXGBE_WRITE_REG(hw, IXGBE_GCR, gcr);
}
/**
* ixgbe_init_ops_82598 - Inits func ptrs and MAC type
* @hw: pointer to hardware structure
*
* Initialize the function pointers and assign the MAC type for 82598.
* Does not touch the hardware.
**/
s32 ixgbe_init_ops_82598(struct ixgbe_hw *hw)
{
struct ixgbe_mac_info *mac = &hw->mac;
struct ixgbe_phy_info *phy = &hw->phy;
s32 ret_val;
DEBUGFUNC("ixgbe_init_ops_82598");
ret_val = ixgbe_init_phy_ops_generic(hw);
ret_val = ixgbe_init_ops_generic(hw);
/* PHY */
phy->ops.init = &ixgbe_init_phy_ops_82598;
/* MAC */
mac->ops.start_hw = &ixgbe_start_hw_82598;
mac->ops.enable_relaxed_ordering = &ixgbe_enable_relaxed_ordering_82598;
mac->ops.reset_hw = &ixgbe_reset_hw_82598;
mac->ops.get_media_type = &ixgbe_get_media_type_82598;
mac->ops.get_supported_physical_layer =
&ixgbe_get_supported_physical_layer_82598;
mac->ops.read_analog_reg8 = &ixgbe_read_analog_reg8_82598;
mac->ops.write_analog_reg8 = &ixgbe_write_analog_reg8_82598;
mac->ops.set_lan_id = &ixgbe_set_lan_id_multi_port_pcie_82598;
/* RAR, Multicast, VLAN */
mac->ops.set_vmdq = &ixgbe_set_vmdq_82598;
mac->ops.clear_vmdq = &ixgbe_clear_vmdq_82598;
mac->ops.set_vfta = &ixgbe_set_vfta_82598;
mac->ops.set_vlvf = NULL;
mac->ops.clear_vfta = &ixgbe_clear_vfta_82598;
/* Flow Control */
mac->ops.fc_enable = &ixgbe_fc_enable_82598;
mac->mcft_size = 128;
mac->vft_size = 128;
mac->num_rar_entries = 16;
mac->rx_pb_size = 512;
mac->max_tx_queues = 32;
mac->max_rx_queues = 64;
mac->max_msix_vectors = ixgbe_get_pcie_msix_count_generic(hw);
/* SFP+ Module */
phy->ops.read_i2c_eeprom = &ixgbe_read_i2c_eeprom_82598;
/* Link */
mac->ops.check_link = &ixgbe_check_mac_link_82598;
mac->ops.setup_link = &ixgbe_setup_mac_link_82598;
mac->ops.flap_tx_laser = NULL;
mac->ops.get_link_capabilities = &ixgbe_get_link_capabilities_82598;
mac->ops.setup_rxpba = &ixgbe_set_rxpba_82598;
/* Manageability interface */
mac->ops.set_fw_drv_ver = NULL;
return ret_val;
}
/**
* ixgbe_init_phy_ops_82598 - 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_82598(struct ixgbe_hw *hw)
{
struct ixgbe_mac_info *mac = &hw->mac;
struct ixgbe_phy_info *phy = &hw->phy;
s32 ret_val = IXGBE_SUCCESS;
u16 list_offset, data_offset;
DEBUGFUNC("ixgbe_init_phy_ops_82598");
/* Identify the PHY */
phy->ops.identify(hw);
/* Overwrite the link function pointers if copper PHY */
if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) {
mac->ops.setup_link = &ixgbe_setup_copper_link_82598;
mac->ops.get_link_capabilities =
&ixgbe_get_copper_link_capabilities_generic;
}
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;
case ixgbe_phy_nl:
phy->ops.reset = &ixgbe_reset_phy_nl;
/* Call SFP+ identify routine to get the SFP+ module type */
ret_val = phy->ops.identify_sfp(hw);
if (ret_val != IXGBE_SUCCESS)
goto out;
else if (hw->phy.sfp_type == ixgbe_sfp_type_unknown) {
ret_val = IXGBE_ERR_SFP_NOT_SUPPORTED;
goto out;
}
/* Check to see if SFP+ module is supported */
ret_val = ixgbe_get_sfp_init_sequence_offsets(hw,
&list_offset,
&data_offset);
if (ret_val != IXGBE_SUCCESS) {
ret_val = IXGBE_ERR_SFP_NOT_SUPPORTED;
goto out;
}
break;
default:
break;
}
out:
return ret_val;
}
/**
* ixgbe_start_hw_82598 - Prepare hardware for Tx/Rx
* @hw: pointer to hardware structure
*
* Starts the hardware using the generic start_hw function.
* Disables relaxed ordering Then set pcie completion timeout
*
**/
s32 ixgbe_start_hw_82598(struct ixgbe_hw *hw)
{
u32 regval;
u32 i;
s32 ret_val = IXGBE_SUCCESS;
DEBUGFUNC("ixgbe_start_hw_82598");
ret_val = ixgbe_start_hw_generic(hw);
/* Disable relaxed ordering */
for (i = 0; ((i < hw->mac.max_tx_queues) &&
(i < IXGBE_DCA_MAX_QUEUES_82598)); i++) {
regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(i));
regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(i), regval);
}
for (i = 0; ((i < hw->mac.max_rx_queues) &&
(i < IXGBE_DCA_MAX_QUEUES_82598)); i++) {
regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
}
/* set the completion timeout for interface */
if (ret_val == IXGBE_SUCCESS)
ixgbe_set_pcie_completion_timeout(hw);
return ret_val;
}
/**
* ixgbe_get_link_capabilities_82598 - Determines link capabilities
* @hw: pointer to hardware structure
* @speed: pointer to link speed
* @autoneg: boolean auto-negotiation value
*
* Determines the link capabilities by reading the AUTOC register.
**/
static s32 ixgbe_get_link_capabilities_82598(struct ixgbe_hw *hw,
ixgbe_link_speed *speed,
bool *autoneg)
{
s32 status = IXGBE_SUCCESS;
u32 autoc = 0;
DEBUGFUNC("ixgbe_get_link_capabilities_82598");
/*
* 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 value.
*/
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;
*autoneg = FALSE;
break;
case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
*speed = IXGBE_LINK_SPEED_10GB_FULL;
*autoneg = FALSE;
break;
case IXGBE_AUTOC_LMS_1G_AN:
*speed = IXGBE_LINK_SPEED_1GB_FULL;
*autoneg = TRUE;
break;
case IXGBE_AUTOC_LMS_KX4_AN:
case IXGBE_AUTOC_LMS_KX4_AN_1G_AN:
*speed = IXGBE_LINK_SPEED_UNKNOWN;
if (autoc & IXGBE_AUTOC_KX4_SUPP)
*speed |= IXGBE_LINK_SPEED_10GB_FULL;
if (autoc & IXGBE_AUTOC_KX_SUPP)
*speed |= IXGBE_LINK_SPEED_1GB_FULL;
*autoneg = TRUE;
break;
default:
status = IXGBE_ERR_LINK_SETUP;
break;
}
return status;
}
/**
* ixgbe_get_media_type_82598 - Determines media type
* @hw: pointer to hardware structure
*
* Returns the media type (fiber, copper, backplane)
**/
static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw)
{
enum ixgbe_media_type media_type;
DEBUGFUNC("ixgbe_get_media_type_82598");
/* 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;
}
/* Media type for I82598 is based on device ID */
switch (hw->device_id) {
case IXGBE_DEV_ID_82598:
case IXGBE_DEV_ID_82598_BX:
/* Default device ID is mezzanine card KX/KX4 */
media_type = ixgbe_media_type_backplane;
break;
case IXGBE_DEV_ID_82598AF_DUAL_PORT:
case IXGBE_DEV_ID_82598AF_SINGLE_PORT:
case IXGBE_DEV_ID_82598_DA_DUAL_PORT:
case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM:
case IXGBE_DEV_ID_82598EB_XF_LR:
case IXGBE_DEV_ID_82598EB_SFP_LOM:
media_type = ixgbe_media_type_fiber;
break;
case IXGBE_DEV_ID_82598EB_CX4:
case IXGBE_DEV_ID_82598_CX4_DUAL_PORT:
media_type = ixgbe_media_type_cx4;
break;
case IXGBE_DEV_ID_82598AT:
case IXGBE_DEV_ID_82598AT2:
media_type = ixgbe_media_type_copper;
break;
default:
media_type = ixgbe_media_type_unknown;
break;
}
out:
return media_type;
}
/**
* ixgbe_fc_enable_82598 - Enable flow control
* @hw: pointer to hardware structure
*
* Enable flow control according to the current settings.
**/
s32 ixgbe_fc_enable_82598(struct ixgbe_hw *hw)
{
s32 ret_val = IXGBE_SUCCESS;
u32 fctrl_reg;
u32 rmcs_reg;
u32 reg;
u32 fcrtl, fcrth;
u32 link_speed = 0;
int i;
bool link_up;
DEBUGFUNC("ixgbe_fc_enable_82598");
/* Validate the water mark configuration */
if (!hw->fc.pause_time) {
ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
goto out;
}
/* Low water mark of zero causes XOFF floods */
for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
hw->fc.high_water[i]) {
if (!hw->fc.low_water[i] ||
hw->fc.low_water[i] >= hw->fc.high_water[i]) {
DEBUGOUT("Invalid water mark configuration\n");
ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
goto out;
}
}
}
/*
* On 82598 having Rx FC on causes resets while doing 1G
* so if it's on turn it off once we know link_speed. For
* more details see 82598 Specification update.
*/
hw->mac.ops.check_link(hw, &link_speed, &link_up, FALSE);
if (link_up && link_speed == IXGBE_LINK_SPEED_1GB_FULL) {
switch (hw->fc.requested_mode) {
case ixgbe_fc_full:
hw->fc.requested_mode = ixgbe_fc_tx_pause;
break;
case ixgbe_fc_rx_pause:
hw->fc.requested_mode = ixgbe_fc_none;
break;
default:
/* no change */
break;
}
}
/* Negotiate the fc mode to use */
ixgbe_fc_autoneg(hw);
/* Disable any previous flow control settings */
fctrl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
fctrl_reg &= ~(IXGBE_FCTRL_RFCE | IXGBE_FCTRL_RPFCE);
rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X);
/*
* The possible values of fc.current_mode are:
* 0: Flow control is completely disabled
* 1: Rx flow control is enabled (we can receive pause frames,
* but not send pause frames).
* 2: Tx flow control is enabled (we can send pause frames but
* we do not support receiving pause frames).
* 3: Both Rx and Tx flow control (symmetric) are enabled.
* other: Invalid.
*/
switch (hw->fc.current_mode) {
case ixgbe_fc_none:
/*
* Flow control is disabled by software override or autoneg.
* The code below will actually disable it in the HW.
*/
break;
case ixgbe_fc_rx_pause:
/*
* Rx Flow control is enabled and Tx Flow control is
* disabled by software override. Since there really
* isn't a way to advertise that we are capable of RX
* Pause ONLY, we will advertise that we support both
* symmetric and asymmetric Rx PAUSE. Later, we will
* disable the adapter's ability to send PAUSE frames.
*/
fctrl_reg |= IXGBE_FCTRL_RFCE;
break;
case ixgbe_fc_tx_pause:
/*
* Tx Flow control is enabled, and Rx Flow control is
* disabled by software override.
*/
rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
break;
case ixgbe_fc_full:
/* Flow control (both Rx and Tx) is enabled by SW override. */
fctrl_reg |= IXGBE_FCTRL_RFCE;
rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
break;
default:
DEBUGOUT("Flow control param set incorrectly\n");
ret_val = IXGBE_ERR_CONFIG;
goto out;
break;
}
/* Set 802.3x based flow control settings. */
fctrl_reg |= IXGBE_FCTRL_DPF;
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl_reg);
IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg);
/* Set up and enable Rx high/low water mark thresholds, enable XON. */
for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
hw->fc.high_water[i]) {
fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), fcrtl);
IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), fcrth);
} else {
IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), 0);
IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), 0);
}
}
/* Configure pause time (2 TCs per register) */
reg = hw->fc.pause_time * 0x00010001;
for (i = 0; i < (IXGBE_DCB_MAX_TRAFFIC_CLASS / 2); i++)
IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
/* Configure flow control refresh threshold value */
IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
out:
return ret_val;
}
/**
* ixgbe_start_mac_link_82598 - Configures MAC link settings
* @hw: pointer to hardware structure
*
* Configures link settings based on values in the ixgbe_hw struct.
* Restarts the link. Performs autonegotiation if needed.
**/
static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw,
bool autoneg_wait_to_complete)
{
u32 autoc_reg;
u32 links_reg;
u32 i;
s32 status = IXGBE_SUCCESS;
DEBUGFUNC("ixgbe_start_mac_link_82598");
/* 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_AN ||
(autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
links_reg = 0; /* Just in case Autoneg time = 0 */
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;
msec_delay(100);
}
if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
DEBUGOUT("Autonegotiation did not complete.\n");
}
}
}
/* Add delay to filter out noises during initial link setup */
msec_delay(50);
return status;
}
/**
* ixgbe_validate_link_ready - Function looks for phy link
* @hw: pointer to hardware structure
*
* Function indicates success when phy link is available. If phy is not ready
* within 5 seconds of MAC indicating link, the function returns error.
**/
static s32 ixgbe_validate_link_ready(struct ixgbe_hw *hw)
{
u32 timeout;
u16 an_reg;
if (hw->device_id != IXGBE_DEV_ID_82598AT2)
return IXGBE_SUCCESS;
for (timeout = 0;
timeout < IXGBE_VALIDATE_LINK_READY_TIMEOUT; timeout++) {
hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &an_reg);
if ((an_reg & IXGBE_MII_AUTONEG_COMPLETE) &&
(an_reg & IXGBE_MII_AUTONEG_LINK_UP))
break;
msec_delay(100);
}
if (timeout == IXGBE_VALIDATE_LINK_READY_TIMEOUT) {
DEBUGOUT("Link was indicated but link is down\n");
return IXGBE_ERR_LINK_SETUP;
}
return IXGBE_SUCCESS;
}
/**
* ixgbe_check_mac_link_82598 - Get link/speed status
* @hw: pointer to hardware structure
* @speed: pointer to link speed
* @link_up: TRUE is link is up, FALSE otherwise
* @link_up_wait_to_complete: bool used to wait for link up or not
*
* Reads the links register to determine if link is up and the current speed
**/
static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw,
ixgbe_link_speed *speed, bool *link_up,
bool link_up_wait_to_complete)
{
u32 links_reg;
u32 i;
u16 link_reg, adapt_comp_reg;
DEBUGFUNC("ixgbe_check_mac_link_82598");
/*
* SERDES PHY requires us to read link status from undocumented
* register 0xC79F. Bit 0 set indicates link is up/ready; clear
* indicates link down. OxC00C is read to check that the XAUI lanes
* are active. Bit 0 clear indicates active; set indicates inactive.
*/
if (hw->phy.type == ixgbe_phy_nl) {
hw->phy.ops.read_reg(hw, 0xC79F, IXGBE_TWINAX_DEV, &link_reg);
hw->phy.ops.read_reg(hw, 0xC79F, IXGBE_TWINAX_DEV, &link_reg);
hw->phy.ops.read_reg(hw, 0xC00C, IXGBE_TWINAX_DEV,
&adapt_comp_reg);
if (link_up_wait_to_complete) {
for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
if ((link_reg & 1) &&
((adapt_comp_reg & 1) == 0)) {
*link_up = TRUE;
break;
} else {
*link_up = FALSE;
}
msec_delay(100);
hw->phy.ops.read_reg(hw, 0xC79F,
IXGBE_TWINAX_DEV,
&link_reg);
hw->phy.ops.read_reg(hw, 0xC00C,
IXGBE_TWINAX_DEV,
&adapt_comp_reg);
}
} else {
if ((link_reg & 1) && ((adapt_comp_reg & 1) == 0))
*link_up = TRUE;
else
*link_up = FALSE;
}
if (*link_up == FALSE)
goto out;
}
links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
if (link_up_wait_to_complete) {
for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
if (links_reg & IXGBE_LINKS_UP) {
*link_up = TRUE;
break;
} else {
*link_up = FALSE;
}
msec_delay(100);
links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
}
} else {
if (links_reg & IXGBE_LINKS_UP)
*link_up = TRUE;
else
*link_up = FALSE;
}
if (links_reg & IXGBE_LINKS_SPEED)
*speed = IXGBE_LINK_SPEED_10GB_FULL;
else
*speed = IXGBE_LINK_SPEED_1GB_FULL;
if ((hw->device_id == IXGBE_DEV_ID_82598AT2) && (*link_up == TRUE) &&
(ixgbe_validate_link_ready(hw) != IXGBE_SUCCESS))
*link_up = FALSE;
out:
return IXGBE_SUCCESS;
}
/**
* ixgbe_setup_mac_link_82598 - 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.
**/
static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw,
ixgbe_link_speed speed, bool autoneg,
bool autoneg_wait_to_complete)
{
s32 status = IXGBE_SUCCESS;
ixgbe_link_speed link_capabilities = IXGBE_LINK_SPEED_UNKNOWN;
u32 curr_autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
u32 autoc = curr_autoc;
u32 link_mode = autoc & IXGBE_AUTOC_LMS_MASK;
DEBUGFUNC("ixgbe_setup_mac_link_82598");
/* Check to see if speed passed in is supported. */
ixgbe_get_link_capabilities(hw, &link_capabilities, &autoneg);
speed &= link_capabilities;
if (speed == IXGBE_LINK_SPEED_UNKNOWN)
status = IXGBE_ERR_LINK_SETUP;
/* Set KX4/KX support according to speed requested */
else if (link_mode == IXGBE_AUTOC_LMS_KX4_AN ||
link_mode == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
autoc &= ~IXGBE_AUTOC_KX4_KX_SUPP_MASK;
if (speed & IXGBE_LINK_SPEED_10GB_FULL)
autoc |= IXGBE_AUTOC_KX4_SUPP;
if (speed & IXGBE_LINK_SPEED_1GB_FULL)
autoc |= IXGBE_AUTOC_KX_SUPP;
if (autoc != curr_autoc)
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
}
if (status == IXGBE_SUCCESS) {
/*
* Setup and restart the link based on the new values in
* ixgbe_hw This will write the AUTOC register based on the new
* stored values
*/
status = ixgbe_start_mac_link_82598(hw,
autoneg_wait_to_complete);
}
return status;
}
/**
* ixgbe_setup_copper_link_82598 - 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
*
* Sets the link speed in the AUTOC register in the MAC and restarts link.
**/
static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw,
ixgbe_link_speed speed,
bool autoneg,
bool autoneg_wait_to_complete)
{
s32 status;
DEBUGFUNC("ixgbe_setup_copper_link_82598");
/* 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_82598(hw, autoneg_wait_to_complete);
return status;
}
/**
* ixgbe_reset_hw_82598 - Performs hardware reset
* @hw: pointer to hardware structure
*
* Resets the hardware by resetting the transmit and receive units, masks and
* clears all interrupts, performing a PHY reset, and performing a link (MAC)
* reset.
**/
static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw)
{
s32 status = IXGBE_SUCCESS;
s32 phy_status = IXGBE_SUCCESS;
u32 ctrl;
u32 gheccr;
u32 i;
u32 autoc;
u8 analog_val;
DEBUGFUNC("ixgbe_reset_hw_82598");
/* Call adapter stop to disable tx/rx and clear interrupts */
status = hw->mac.ops.stop_adapter(hw);
if (status != IXGBE_SUCCESS)
goto reset_hw_out;
/*
* Power up the Atlas Tx lanes if they are currently powered down.
* Atlas Tx lanes are powered down for MAC loopback tests, but
* they are not automatically restored on reset.
*/
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) {
/* Enable Tx Atlas so packets can be transmitted again */
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
&analog_val);
analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
analog_val);
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
&analog_val);
analog_val &= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
analog_val);
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
&analog_val);
analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
analog_val);
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
&analog_val);
analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
analog_val);
}
/* Reset PHY */
if (hw->phy.reset_disable == FALSE) {
/* PHY ops must be identified and initialized prior to reset */
/* Init PHY and function pointers, perform SFP setup */
phy_status = hw->phy.ops.init(hw);
if (phy_status == IXGBE_ERR_SFP_NOT_SUPPORTED)
goto reset_hw_out;
if (phy_status == IXGBE_ERR_SFP_NOT_PRESENT)
goto mac_reset_top;
hw->phy.ops.reset(hw);
}
mac_reset_top:
/*
* Issue global reset to the MAC. This needs to be a SW reset.
* If link reset is used, it might reset the MAC when mng is using it
*/
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL) | IXGBE_CTRL_RST;
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++) {
usec_delay(1);
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
if (!(ctrl & IXGBE_CTRL_RST))
break;
}
if (ctrl & IXGBE_CTRL_RST) {
status = IXGBE_ERR_RESET_FAILED;
DEBUGOUT("Reset polling failed to complete.\n");
}
msec_delay(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;
}
gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR);
gheccr &= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr);
/*
* Store the original AUTOC value if it has not been
* stored off yet. Otherwise restore the stored original
* AUTOC value since the reset operation sets back to deaults.
*/
autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
if (hw->mac.orig_link_settings_stored == FALSE) {
hw->mac.orig_autoc = autoc;
hw->mac.orig_link_settings_stored = TRUE;
} else if (autoc != hw->mac.orig_autoc) {
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, hw->mac.orig_autoc);
}
/* 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
*/
hw->mac.ops.init_rx_addrs(hw);
reset_hw_out:
if (phy_status != IXGBE_SUCCESS)
status = phy_status;
return status;
}
/**
* ixgbe_set_vmdq_82598 - Associate a VMDq set index with a rx address
* @hw: pointer to hardware struct
* @rar: receive address register index to associate with a VMDq index
* @vmdq: VMDq set index
**/
s32 ixgbe_set_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
{
u32 rar_high;
u32 rar_entries = hw->mac.num_rar_entries;
DEBUGFUNC("ixgbe_set_vmdq_82598");
/* Make sure we are using a valid rar index range */
if (rar >= rar_entries) {
DEBUGOUT1("RAR index %d is out of range.\n", rar);
return IXGBE_ERR_INVALID_ARGUMENT;
}
rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
rar_high &= ~IXGBE_RAH_VIND_MASK;
rar_high |= ((vmdq << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK);
IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
return IXGBE_SUCCESS;
}
/**
* ixgbe_clear_vmdq_82598 - Disassociate a VMDq set index from an rx address
* @hw: pointer to hardware struct
* @rar: receive address register index to associate with a VMDq index
* @vmdq: VMDq clear index (not used in 82598, but elsewhere)
**/
static s32 ixgbe_clear_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
{
u32 rar_high;
u32 rar_entries = hw->mac.num_rar_entries;
UNREFERENCED_1PARAMETER(vmdq);
/* Make sure we are using a valid rar index range */
if (rar >= rar_entries) {
DEBUGOUT1("RAR index %d is out of range.\n", rar);
return IXGBE_ERR_INVALID_ARGUMENT;
}
rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
if (rar_high & IXGBE_RAH_VIND_MASK) {
rar_high &= ~IXGBE_RAH_VIND_MASK;
IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
}
return IXGBE_SUCCESS;
}
/**
* ixgbe_set_vfta_82598 - Set VLAN filter table
* @hw: pointer to hardware structure
* @vlan: VLAN id to write to VLAN filter
* @vind: VMDq output index that maps queue to VLAN id in VFTA
* @vlan_on: boolean flag to turn on/off VLAN in VFTA
*
* Turn on/off specified VLAN in the VLAN filter table.
**/
s32 ixgbe_set_vfta_82598(struct ixgbe_hw *hw, u32 vlan, u32 vind,
bool vlan_on)
{
u32 regindex;
u32 bitindex;
u32 bits;
u32 vftabyte;
DEBUGFUNC("ixgbe_set_vfta_82598");
if (vlan > 4095)
return IXGBE_ERR_PARAM;
/* Determine 32-bit word position in array */
regindex = (vlan >> 5) & 0x7F; /* upper seven bits */
/* Determine the location of the (VMD) queue index */
vftabyte = ((vlan >> 3) & 0x03); /* bits (4:3) indicating byte array */
bitindex = (vlan & 0x7) << 2; /* lower 3 bits indicate nibble */
/* Set the nibble for VMD queue index */
bits = IXGBE_READ_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex));
bits &= (~(0x0F << bitindex));
bits |= (vind << bitindex);
IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vftabyte, regindex), bits);
/* Determine the location of the bit for this VLAN id */
bitindex = vlan & 0x1F; /* lower five bits */
bits = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
if (vlan_on)
/* Turn on this VLAN id */
bits |= (1 << bitindex);
else
/* Turn off this VLAN id */
bits &= ~(1 << bitindex);
IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), bits);
return IXGBE_SUCCESS;
}
/**
* ixgbe_clear_vfta_82598 - Clear VLAN filter table
* @hw: pointer to hardware structure
*
* Clears the VLAN filer table, and the VMDq index associated with the filter
**/
static s32 ixgbe_clear_vfta_82598(struct ixgbe_hw *hw)
{
u32 offset;
u32 vlanbyte;
DEBUGFUNC("ixgbe_clear_vfta_82598");
for (offset = 0; offset < hw->mac.vft_size; offset++)
IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
for (vlanbyte = 0; vlanbyte < 4; vlanbyte++)
for (offset = 0; offset < hw->mac.vft_size; offset++)
IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vlanbyte, offset),
0);
return IXGBE_SUCCESS;
}
/**
* ixgbe_read_analog_reg8_82598 - Reads 8 bit Atlas analog register
* @hw: pointer to hardware structure
* @reg: analog register to read
* @val: read value
*
* Performs read operation to Atlas analog register specified.
**/
s32 ixgbe_read_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 *val)
{
u32 atlas_ctl;
DEBUGFUNC("ixgbe_read_analog_reg8_82598");
IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL,
IXGBE_ATLASCTL_WRITE_CMD | (reg << 8));
IXGBE_WRITE_FLUSH(hw);
usec_delay(10);
atlas_ctl = IXGBE_READ_REG(hw, IXGBE_ATLASCTL);
*val = (u8)atlas_ctl;
return IXGBE_SUCCESS;
}
/**
* ixgbe_write_analog_reg8_82598 - Writes 8 bit Atlas analog register
* @hw: pointer to hardware structure
* @reg: atlas register to write
* @val: value to write
*
* Performs write operation to Atlas analog register specified.
**/
s32 ixgbe_write_analog_reg8_82598(struct ixgbe_hw *hw, u32 reg, u8 val)
{
u32 atlas_ctl;
DEBUGFUNC("ixgbe_write_analog_reg8_82598");
atlas_ctl = (reg << 8) | val;
IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, atlas_ctl);
IXGBE_WRITE_FLUSH(hw);
usec_delay(10);
return IXGBE_SUCCESS;
}
/**
* ixgbe_read_i2c_eeprom_82598 - Reads 8 bit word over I2C interface.
* @hw: pointer to hardware structure
* @byte_offset: EEPROM byte offset to read
* @eeprom_data: value read
*
* Performs 8 byte read operation to SFP module's EEPROM over I2C interface.
**/
s32 ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw *hw, u8 byte_offset,
u8 *eeprom_data)
{
s32 status = IXGBE_SUCCESS;
u16 sfp_addr = 0;
u16 sfp_data = 0;
u16 sfp_stat = 0;
u32 i;
DEBUGFUNC("ixgbe_read_i2c_eeprom_82598");
if (hw->phy.type == ixgbe_phy_nl) {
/*
* NetLogic phy SDA/SCL registers are at addresses 0xC30A to
* 0xC30D. These registers are used to talk to the SFP+
* module's EEPROM through the SDA/SCL (I2C) interface.
*/
sfp_addr = (IXGBE_I2C_EEPROM_DEV_ADDR << 8) + byte_offset;
sfp_addr = (sfp_addr | IXGBE_I2C_EEPROM_READ_MASK);
hw->phy.ops.write_reg(hw,
IXGBE_MDIO_PMA_PMD_SDA_SCL_ADDR,
IXGBE_MDIO_PMA_PMD_DEV_TYPE,
sfp_addr);
/* Poll status */
for (i = 0; i < 100; i++) {
hw->phy.ops.read_reg(hw,
IXGBE_MDIO_PMA_PMD_SDA_SCL_STAT,
IXGBE_MDIO_PMA_PMD_DEV_TYPE,
&sfp_stat);
sfp_stat = sfp_stat & IXGBE_I2C_EEPROM_STATUS_MASK;
if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_IN_PROGRESS)
break;
msec_delay(10);
}
if (sfp_stat != IXGBE_I2C_EEPROM_STATUS_PASS) {
DEBUGOUT("EEPROM read did not pass.\n");
status = IXGBE_ERR_SFP_NOT_PRESENT;
goto out;
}
/* Read data */
hw->phy.ops.read_reg(hw, IXGBE_MDIO_PMA_PMD_SDA_SCL_DATA,
IXGBE_MDIO_PMA_PMD_DEV_TYPE, &sfp_data);
*eeprom_data = (u8)(sfp_data >> 8);
} else {
status = IXGBE_ERR_PHY;
goto out;
}
out:
return status;
}
/**
* ixgbe_get_supported_physical_layer_82598 - Returns physical layer type
* @hw: pointer to hardware structure
*
* Determines physical layer capabilities of the current configuration.
**/
u32 ixgbe_get_supported_physical_layer_82598(struct ixgbe_hw *hw)
{
u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
u32 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
u32 pma_pmd_10g = autoc & IXGBE_AUTOC_10G_PMA_PMD_MASK;
u32 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK;
u16 ext_ability = 0;
DEBUGFUNC("ixgbe_get_supported_physical_layer_82598");
hw->phy.ops.identify(hw);
/* Copper PHY must be checked before AUTOC LMS to determine correct
* physical layer because 10GBase-T PHYs use LMS = KX4/KX */
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)
physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_KX;
else
physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_BX;
break;
case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
if (pma_pmd_10g == IXGBE_AUTOC_10G_CX4)
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_CX4;
else if (pma_pmd_10g == IXGBE_AUTOC_10G_KX4)
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KX4;
else /* XAUI */
physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
break;
case IXGBE_AUTOC_LMS_KX4_AN:
case IXGBE_AUTOC_LMS_KX4_AN_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;
break;
default:
break;
}
if (hw->phy.type == ixgbe_phy_nl) {
hw->phy.ops.identify_sfp(hw);
switch (hw->phy.sfp_type) {
case ixgbe_sfp_type_da_cu:
physical_layer = IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU;
break;
case ixgbe_sfp_type_sr:
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR;
break;
case ixgbe_sfp_type_lr:
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR;
break;
default:
physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
break;
}
}
switch (hw->device_id) {
case IXGBE_DEV_ID_82598_DA_DUAL_PORT:
physical_layer = IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU;
break;
case IXGBE_DEV_ID_82598AF_DUAL_PORT:
case IXGBE_DEV_ID_82598AF_SINGLE_PORT:
case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM:
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR;
break;
case IXGBE_DEV_ID_82598EB_XF_LR:
physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR;
break;
default:
break;
}
out:
return physical_layer;
}
/**
* ixgbe_set_lan_id_multi_port_pcie_82598 - Set LAN id for PCIe multiple
* port devices.
* @hw: pointer to the HW structure
*
* Calls common function and corrects issue with some single port devices
* that enable LAN1 but not LAN0.
**/
void ixgbe_set_lan_id_multi_port_pcie_82598(struct ixgbe_hw *hw)
{
struct ixgbe_bus_info *bus = &hw->bus;
u16 pci_gen = 0;
u16 pci_ctrl2 = 0;
DEBUGFUNC("ixgbe_set_lan_id_multi_port_pcie_82598");
ixgbe_set_lan_id_multi_port_pcie(hw);
/* check if LAN0 is disabled */
hw->eeprom.ops.read(hw, IXGBE_PCIE_GENERAL_PTR, &pci_gen);
if ((pci_gen != 0) && (pci_gen != 0xFFFF)) {
hw->eeprom.ops.read(hw, pci_gen + IXGBE_PCIE_CTRL2, &pci_ctrl2);
/* if LAN0 is completely disabled force function to 0 */
if ((pci_ctrl2 & IXGBE_PCIE_CTRL2_LAN_DISABLE) &&
!(pci_ctrl2 & IXGBE_PCIE_CTRL2_DISABLE_SELECT) &&
!(pci_ctrl2 & IXGBE_PCIE_CTRL2_DUMMY_ENABLE)) {
bus->func = 0;
}
}
}
/**
* ixgbe_enable_relaxed_ordering_82598 - enable relaxed ordering
* @hw: pointer to hardware structure
*
**/
void ixgbe_enable_relaxed_ordering_82598(struct ixgbe_hw *hw)
{
u32 regval;
u32 i;
DEBUGFUNC("ixgbe_enable_relaxed_ordering_82598");
/* Enable relaxed ordering */
for (i = 0; ((i < hw->mac.max_tx_queues) &&
(i < IXGBE_DCA_MAX_QUEUES_82598)); i++) {
regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(i));
regval |= IXGBE_DCA_TXCTRL_DESC_WRO_EN;
IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(i), regval);
}
for (i = 0; ((i < hw->mac.max_rx_queues) &&
(i < IXGBE_DCA_MAX_QUEUES_82598)); i++) {
regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
regval |= IXGBE_DCA_RXCTRL_DATA_WRO_EN |
IXGBE_DCA_RXCTRL_HEAD_WRO_EN;
IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
}
}
/**
* ixgbe_set_rxpba_82598 - Initialize RX packet buffer
* @hw: pointer to hardware structure
* @num_pb: number of packet buffers to allocate
* @headroom: reserve n KB of headroom
* @strategy: packet buffer allocation strategy
**/
static void ixgbe_set_rxpba_82598(struct ixgbe_hw *hw, int num_pb,
u32 headroom, int strategy)
{
u32 rxpktsize = IXGBE_RXPBSIZE_64KB;
u8 i = 0;
UNREFERENCED_1PARAMETER(headroom);
if (!num_pb)
return;
/* Setup Rx packet buffer sizes */
switch (strategy) {
case PBA_STRATEGY_WEIGHTED:
/* Setup the first four at 80KB */
rxpktsize = IXGBE_RXPBSIZE_80KB;
for (; i < 4; i++)
IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
/* Setup the last four at 48KB...don't re-init i */
rxpktsize = IXGBE_RXPBSIZE_48KB;
/* Fall Through */
case PBA_STRATEGY_EQUAL:
default:
/* Divide the remaining Rx packet buffer evenly among the TCs */
for (; i < IXGBE_MAX_PACKET_BUFFERS; i++)
IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
break;
}
/* Setup Tx packet buffer sizes */
for (i = 0; i < IXGBE_MAX_PACKET_BUFFERS; i++)
IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), IXGBE_TXPBSIZE_40KB);
return;
}