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numam-dpdk/drivers/net/axgbe/axgbe_mdio.c
Joyce Kong 4693ae4a74 net/axgbe: use common bit operations API 
Remove its own bit operation APIs and use the common one,
this can reduce the code duplication largely.

Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Reviewed-by: Gavin Hu <gavin.hu@arm.com>
2020-06-16 14:34:42 +02:00

1287 lines
32 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
* Copyright(c) 2018 Synopsys, Inc. All rights reserved.
*/
#include "axgbe_ethdev.h"
#include "axgbe_common.h"
#include "axgbe_phy.h"
static void axgbe_an37_clear_interrupts(struct axgbe_port *pdata)
{
int reg;
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_STAT);
reg &= ~AXGBE_AN_CL37_INT_MASK;
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_STAT, reg);
}
static void axgbe_an37_disable_interrupts(struct axgbe_port *pdata)
{
int reg;
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL);
reg &= ~AXGBE_AN_CL37_INT_MASK;
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL, reg);
reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_PCS_DIG_CTRL);
reg &= ~AXGBE_PCS_CL37_BP;
XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_PCS_DIG_CTRL, reg);
}
static void axgbe_an37_enable_interrupts(struct axgbe_port *pdata)
{
unsigned int reg;
reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_PCS_DIG_CTRL);
reg |= AXGBE_PCS_CL37_BP;
XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_PCS_DIG_CTRL, reg);
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL);
reg |= AXGBE_AN_CL37_INT_MASK;
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL, reg);
}
static void axgbe_an73_clear_interrupts(struct axgbe_port *pdata)
{
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INT, 0);
}
static void axgbe_an73_disable_interrupts(struct axgbe_port *pdata)
{
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INTMASK, 0);
}
static void axgbe_an73_enable_interrupts(struct axgbe_port *pdata)
{
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INTMASK,
AXGBE_AN_CL73_INT_MASK);
}
static void axgbe_an_enable_interrupts(struct axgbe_port *pdata)
{
switch (pdata->an_mode) {
case AXGBE_AN_MODE_CL73:
case AXGBE_AN_MODE_CL73_REDRV:
axgbe_an73_enable_interrupts(pdata);
break;
case AXGBE_AN_MODE_CL37:
case AXGBE_AN_MODE_CL37_SGMII:
axgbe_an37_enable_interrupts(pdata);
break;
default:
break;
}
}
static void axgbe_an_clear_interrupts_all(struct axgbe_port *pdata)
{
axgbe_an73_clear_interrupts(pdata);
axgbe_an37_clear_interrupts(pdata);
}
static void axgbe_an73_enable_kr_training(struct axgbe_port *pdata)
{
unsigned int reg;
reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
reg |= AXGBE_KR_TRAINING_ENABLE;
XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, reg);
}
static void axgbe_an73_disable_kr_training(struct axgbe_port *pdata)
{
unsigned int reg;
reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
reg &= ~AXGBE_KR_TRAINING_ENABLE;
XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, reg);
}
static void axgbe_kr_mode(struct axgbe_port *pdata)
{
/* Enable KR training */
axgbe_an73_enable_kr_training(pdata);
/* Set MAC to 10G speed */
pdata->hw_if.set_speed(pdata, SPEED_10000);
/* Call PHY implementation support to complete rate change */
pdata->phy_if.phy_impl.set_mode(pdata, AXGBE_MODE_KR);
}
static void axgbe_kx_2500_mode(struct axgbe_port *pdata)
{
/* Disable KR training */
axgbe_an73_disable_kr_training(pdata);
/* Set MAC to 2.5G speed */
pdata->hw_if.set_speed(pdata, SPEED_2500);
/* Call PHY implementation support to complete rate change */
pdata->phy_if.phy_impl.set_mode(pdata, AXGBE_MODE_KX_2500);
}
static void axgbe_kx_1000_mode(struct axgbe_port *pdata)
{
/* Disable KR training */
axgbe_an73_disable_kr_training(pdata);
/* Set MAC to 1G speed */
pdata->hw_if.set_speed(pdata, SPEED_1000);
/* Call PHY implementation support to complete rate change */
pdata->phy_if.phy_impl.set_mode(pdata, AXGBE_MODE_KX_1000);
}
static void axgbe_sfi_mode(struct axgbe_port *pdata)
{
/* If a KR re-driver is present, change to KR mode instead */
if (pdata->kr_redrv)
return axgbe_kr_mode(pdata);
/* Disable KR training */
axgbe_an73_disable_kr_training(pdata);
/* Set MAC to 10G speed */
pdata->hw_if.set_speed(pdata, SPEED_10000);
/* Call PHY implementation support to complete rate change */
pdata->phy_if.phy_impl.set_mode(pdata, AXGBE_MODE_SFI);
}
static void axgbe_x_mode(struct axgbe_port *pdata)
{
/* Disable KR training */
axgbe_an73_disable_kr_training(pdata);
/* Set MAC to 1G speed */
pdata->hw_if.set_speed(pdata, SPEED_1000);
/* Call PHY implementation support to complete rate change */
pdata->phy_if.phy_impl.set_mode(pdata, AXGBE_MODE_X);
}
static void axgbe_sgmii_1000_mode(struct axgbe_port *pdata)
{
/* Disable KR training */
axgbe_an73_disable_kr_training(pdata);
/* Set MAC to 1G speed */
pdata->hw_if.set_speed(pdata, SPEED_1000);
/* Call PHY implementation support to complete rate change */
pdata->phy_if.phy_impl.set_mode(pdata, AXGBE_MODE_SGMII_1000);
}
static void axgbe_sgmii_100_mode(struct axgbe_port *pdata)
{
/* Disable KR training */
axgbe_an73_disable_kr_training(pdata);
/* Set MAC to 1G speed */
pdata->hw_if.set_speed(pdata, SPEED_1000);
/* Call PHY implementation support to complete rate change */
pdata->phy_if.phy_impl.set_mode(pdata, AXGBE_MODE_SGMII_100);
}
static enum axgbe_mode axgbe_cur_mode(struct axgbe_port *pdata)
{
return pdata->phy_if.phy_impl.cur_mode(pdata);
}
static bool axgbe_in_kr_mode(struct axgbe_port *pdata)
{
return axgbe_cur_mode(pdata) == AXGBE_MODE_KR;
}
static void axgbe_change_mode(struct axgbe_port *pdata,
enum axgbe_mode mode)
{
switch (mode) {
case AXGBE_MODE_KX_1000:
axgbe_kx_1000_mode(pdata);
break;
case AXGBE_MODE_KX_2500:
axgbe_kx_2500_mode(pdata);
break;
case AXGBE_MODE_KR:
axgbe_kr_mode(pdata);
break;
case AXGBE_MODE_SGMII_100:
axgbe_sgmii_100_mode(pdata);
break;
case AXGBE_MODE_SGMII_1000:
axgbe_sgmii_1000_mode(pdata);
break;
case AXGBE_MODE_X:
axgbe_x_mode(pdata);
break;
case AXGBE_MODE_SFI:
axgbe_sfi_mode(pdata);
break;
case AXGBE_MODE_UNKNOWN:
break;
default:
PMD_DRV_LOG(ERR, "invalid operation mode requested (%u)\n", mode);
}
}
static void axgbe_switch_mode(struct axgbe_port *pdata)
{
axgbe_change_mode(pdata, pdata->phy_if.phy_impl.switch_mode(pdata));
}
static void axgbe_set_mode(struct axgbe_port *pdata,
enum axgbe_mode mode)
{
if (mode == axgbe_cur_mode(pdata))
return;
axgbe_change_mode(pdata, mode);
}
static bool axgbe_use_mode(struct axgbe_port *pdata,
enum axgbe_mode mode)
{
return pdata->phy_if.phy_impl.use_mode(pdata, mode);
}
static void axgbe_an37_set(struct axgbe_port *pdata, bool enable,
bool restart)
{
unsigned int reg;
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_CTRL1);
reg &= ~MDIO_VEND2_CTRL1_AN_ENABLE;
if (enable)
reg |= MDIO_VEND2_CTRL1_AN_ENABLE;
if (restart)
reg |= MDIO_VEND2_CTRL1_AN_RESTART;
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_CTRL1, reg);
}
static void axgbe_an37_restart(struct axgbe_port *pdata)
{
axgbe_an37_enable_interrupts(pdata);
axgbe_an37_set(pdata, true, true);
}
static void axgbe_an37_disable(struct axgbe_port *pdata)
{
axgbe_an37_set(pdata, false, false);
axgbe_an37_disable_interrupts(pdata);
}
static void axgbe_an73_set(struct axgbe_port *pdata, bool enable,
bool restart)
{
unsigned int reg;
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_CTRL1);
reg &= ~MDIO_AN_CTRL1_ENABLE;
if (enable)
reg |= MDIO_AN_CTRL1_ENABLE;
if (restart)
reg |= MDIO_AN_CTRL1_RESTART;
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_CTRL1, reg);
}
static void axgbe_an73_restart(struct axgbe_port *pdata)
{
axgbe_an73_enable_interrupts(pdata);
axgbe_an73_set(pdata, true, true);
PMD_DRV_LOG(DEBUG, "CL73 AN enabled/restarted\n");
}
static void axgbe_an73_disable(struct axgbe_port *pdata)
{
axgbe_an73_set(pdata, false, false);
axgbe_an73_disable_interrupts(pdata);
pdata->an_start = 0;
PMD_DRV_LOG(DEBUG, "CL73 AN disabled\n");
}
static void axgbe_an_restart(struct axgbe_port *pdata)
{
if (pdata->phy_if.phy_impl.an_pre)
pdata->phy_if.phy_impl.an_pre(pdata);
switch (pdata->an_mode) {
case AXGBE_AN_MODE_CL73:
case AXGBE_AN_MODE_CL73_REDRV:
axgbe_an73_restart(pdata);
break;
case AXGBE_AN_MODE_CL37:
case AXGBE_AN_MODE_CL37_SGMII:
axgbe_an37_restart(pdata);
break;
default:
break;
}
}
static void axgbe_an_disable(struct axgbe_port *pdata)
{
if (pdata->phy_if.phy_impl.an_post)
pdata->phy_if.phy_impl.an_post(pdata);
switch (pdata->an_mode) {
case AXGBE_AN_MODE_CL73:
case AXGBE_AN_MODE_CL73_REDRV:
axgbe_an73_disable(pdata);
break;
case AXGBE_AN_MODE_CL37:
case AXGBE_AN_MODE_CL37_SGMII:
axgbe_an37_disable(pdata);
break;
default:
break;
}
}
static void axgbe_an_disable_all(struct axgbe_port *pdata)
{
axgbe_an73_disable(pdata);
axgbe_an37_disable(pdata);
}
static enum axgbe_an axgbe_an73_tx_training(struct axgbe_port *pdata,
enum axgbe_rx *state)
{
unsigned int ad_reg, lp_reg, reg;
*state = AXGBE_RX_COMPLETE;
/* If we're not in KR mode then we're done */
if (!axgbe_in_kr_mode(pdata))
return AXGBE_AN_PAGE_RECEIVED;
/* Enable/Disable FEC */
ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 2);
reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_FECCTRL);
reg &= ~(MDIO_PMA_10GBR_FECABLE_ABLE | MDIO_PMA_10GBR_FECABLE_ERRABLE);
if ((ad_reg & 0xc000) && (lp_reg & 0xc000))
reg |= pdata->fec_ability;
XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_FECCTRL, reg);
/* Start KR training */
reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
if (reg & AXGBE_KR_TRAINING_ENABLE) {
if (pdata->phy_if.phy_impl.kr_training_pre)
pdata->phy_if.phy_impl.kr_training_pre(pdata);
reg |= AXGBE_KR_TRAINING_START;
XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL,
reg);
PMD_DRV_LOG(DEBUG, "KR training initiated\n");
if (pdata->phy_if.phy_impl.kr_training_post)
pdata->phy_if.phy_impl.kr_training_post(pdata);
}
return AXGBE_AN_PAGE_RECEIVED;
}
static enum axgbe_an axgbe_an73_tx_xnp(struct axgbe_port *pdata,
enum axgbe_rx *state)
{
u16 msg;
*state = AXGBE_RX_XNP;
msg = AXGBE_XNP_MCF_NULL_MESSAGE;
msg |= AXGBE_XNP_MP_FORMATTED;
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_XNP + 2, 0);
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_XNP + 1, 0);
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_XNP, msg);
return AXGBE_AN_PAGE_RECEIVED;
}
static enum axgbe_an axgbe_an73_rx_bpa(struct axgbe_port *pdata,
enum axgbe_rx *state)
{
unsigned int link_support;
unsigned int reg, ad_reg, lp_reg;
/* Read Base Ability register 2 first */
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 1);
/* Check for a supported mode, otherwise restart in a different one */
link_support = axgbe_in_kr_mode(pdata) ? 0x80 : 0x20;
if (!(reg & link_support))
return AXGBE_AN_INCOMPAT_LINK;
/* Check Extended Next Page support */
ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA);
return ((ad_reg & AXGBE_XNP_NP_EXCHANGE) ||
(lp_reg & AXGBE_XNP_NP_EXCHANGE))
? axgbe_an73_tx_xnp(pdata, state)
: axgbe_an73_tx_training(pdata, state);
}
static enum axgbe_an axgbe_an73_rx_xnp(struct axgbe_port *pdata,
enum axgbe_rx *state)
{
unsigned int ad_reg, lp_reg;
/* Check Extended Next Page support */
ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_XNP);
lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPX);
return ((ad_reg & AXGBE_XNP_NP_EXCHANGE) ||
(lp_reg & AXGBE_XNP_NP_EXCHANGE))
? axgbe_an73_tx_xnp(pdata, state)
: axgbe_an73_tx_training(pdata, state);
}
static enum axgbe_an axgbe_an73_page_received(struct axgbe_port *pdata)
{
enum axgbe_rx *state;
unsigned long an_timeout;
enum axgbe_an ret;
unsigned long ticks;
if (!pdata->an_start) {
pdata->an_start = rte_get_timer_cycles();
} else {
an_timeout = pdata->an_start +
msecs_to_timer_cycles(AXGBE_AN_MS_TIMEOUT);
ticks = rte_get_timer_cycles();
if (time_after(ticks, an_timeout)) {
/* Auto-negotiation timed out, reset state */
pdata->kr_state = AXGBE_RX_BPA;
pdata->kx_state = AXGBE_RX_BPA;
pdata->an_start = rte_get_timer_cycles();
PMD_DRV_LOG(NOTICE,
"CL73 AN timed out, resetting state\n");
}
}
state = axgbe_in_kr_mode(pdata) ? &pdata->kr_state
: &pdata->kx_state;
switch (*state) {
case AXGBE_RX_BPA:
ret = axgbe_an73_rx_bpa(pdata, state);
break;
case AXGBE_RX_XNP:
ret = axgbe_an73_rx_xnp(pdata, state);
break;
default:
ret = AXGBE_AN_ERROR;
}
return ret;
}
static enum axgbe_an axgbe_an73_incompat_link(struct axgbe_port *pdata)
{
/* Be sure we aren't looping trying to negotiate */
if (axgbe_in_kr_mode(pdata)) {
pdata->kr_state = AXGBE_RX_ERROR;
if (!(pdata->phy.advertising & ADVERTISED_1000baseKX_Full) &&
!(pdata->phy.advertising & ADVERTISED_2500baseX_Full))
return AXGBE_AN_NO_LINK;
if (pdata->kx_state != AXGBE_RX_BPA)
return AXGBE_AN_NO_LINK;
} else {
pdata->kx_state = AXGBE_RX_ERROR;
if (!(pdata->phy.advertising & ADVERTISED_10000baseKR_Full))
return AXGBE_AN_NO_LINK;
if (pdata->kr_state != AXGBE_RX_BPA)
return AXGBE_AN_NO_LINK;
}
axgbe_an_disable(pdata);
axgbe_switch_mode(pdata);
axgbe_an_restart(pdata);
return AXGBE_AN_INCOMPAT_LINK;
}
static const char *axgbe_state_as_string(enum axgbe_an state)
{
switch (state) {
case AXGBE_AN_READY:
return "Ready";
case AXGBE_AN_PAGE_RECEIVED:
return "Page-Received";
case AXGBE_AN_INCOMPAT_LINK:
return "Incompatible-Link";
case AXGBE_AN_COMPLETE:
return "Complete";
case AXGBE_AN_NO_LINK:
return "No-Link";
case AXGBE_AN_ERROR:
return "Error";
default:
return "Undefined";
}
}
static void axgbe_an73_state_machine(struct axgbe_port *pdata)
{
enum axgbe_an cur_state = pdata->an_state;
if (!pdata->an_int)
return;
next_int:
if (pdata->an_int & AXGBE_AN_CL73_PG_RCV) {
pdata->an_state = AXGBE_AN_PAGE_RECEIVED;
pdata->an_int &= ~AXGBE_AN_CL73_PG_RCV;
} else if (pdata->an_int & AXGBE_AN_CL73_INC_LINK) {
pdata->an_state = AXGBE_AN_INCOMPAT_LINK;
pdata->an_int &= ~AXGBE_AN_CL73_INC_LINK;
} else if (pdata->an_int & AXGBE_AN_CL73_INT_CMPLT) {
pdata->an_state = AXGBE_AN_COMPLETE;
pdata->an_int &= ~AXGBE_AN_CL73_INT_CMPLT;
} else {
pdata->an_state = AXGBE_AN_ERROR;
}
PMD_DRV_LOG(DEBUG, "CL73 AN : %s\n",
axgbe_state_as_string(pdata->an_state));
again:
cur_state = pdata->an_state;
switch (pdata->an_state) {
case AXGBE_AN_READY:
pdata->an_supported = 0;
break;
case AXGBE_AN_PAGE_RECEIVED:
pdata->an_state = axgbe_an73_page_received(pdata);
pdata->an_supported++;
break;
case AXGBE_AN_INCOMPAT_LINK:
pdata->an_supported = 0;
pdata->parallel_detect = 0;
pdata->an_state = axgbe_an73_incompat_link(pdata);
break;
case AXGBE_AN_COMPLETE:
pdata->parallel_detect = pdata->an_supported ? 0 : 1;
break;
case AXGBE_AN_NO_LINK:
break;
default:
pdata->an_state = AXGBE_AN_ERROR;
}
if (pdata->an_state == AXGBE_AN_NO_LINK) {
pdata->an_int = 0;
axgbe_an73_clear_interrupts(pdata);
pdata->eth_dev->data->dev_link.link_status =
ETH_LINK_DOWN;
} else if (pdata->an_state == AXGBE_AN_ERROR) {
PMD_DRV_LOG(ERR, "error during auto-negotiation, state=%u\n",
cur_state);
pdata->an_int = 0;
axgbe_an73_clear_interrupts(pdata);
}
if (pdata->an_state >= AXGBE_AN_COMPLETE) {
pdata->an_result = pdata->an_state;
pdata->an_state = AXGBE_AN_READY;
pdata->kr_state = AXGBE_RX_BPA;
pdata->kx_state = AXGBE_RX_BPA;
pdata->an_start = 0;
if (pdata->phy_if.phy_impl.an_post)
pdata->phy_if.phy_impl.an_post(pdata);
PMD_DRV_LOG(DEBUG, "CL73 AN result: %s\n",
axgbe_state_as_string(pdata->an_result));
}
if (cur_state != pdata->an_state)
goto again;
if (pdata->an_int)
goto next_int;
axgbe_an73_enable_interrupts(pdata);
}
static void axgbe_an37_state_machine(struct axgbe_port *pdata)
{
enum axgbe_an cur_state = pdata->an_state;
if (!pdata->an_int)
return;
if (pdata->an_int & AXGBE_AN_CL37_INT_CMPLT) {
pdata->an_state = AXGBE_AN_COMPLETE;
pdata->an_int &= ~AXGBE_AN_CL37_INT_CMPLT;
/* If SGMII is enabled, check the link status */
if (pdata->an_mode == AXGBE_AN_MODE_CL37_SGMII &&
!(pdata->an_status & AXGBE_SGMII_AN_LINK_STATUS))
pdata->an_state = AXGBE_AN_NO_LINK;
}
cur_state = pdata->an_state;
switch (pdata->an_state) {
case AXGBE_AN_READY:
break;
case AXGBE_AN_COMPLETE:
break;
case AXGBE_AN_NO_LINK:
break;
default:
pdata->an_state = AXGBE_AN_ERROR;
break;
}
if (pdata->an_state == AXGBE_AN_ERROR) {
PMD_DRV_LOG(ERR, "error during auto-negotiation, state=%u\n",
cur_state);
pdata->an_int = 0;
axgbe_an37_clear_interrupts(pdata);
}
if (pdata->an_state >= AXGBE_AN_COMPLETE) {
pdata->an_result = pdata->an_state;
pdata->an_state = AXGBE_AN_READY;
if (pdata->phy_if.phy_impl.an_post)
pdata->phy_if.phy_impl.an_post(pdata);
}
axgbe_an37_enable_interrupts(pdata);
}
static void axgbe_an73_isr(struct axgbe_port *pdata)
{
/* Disable AN interrupts */
axgbe_an73_disable_interrupts(pdata);
/* Save the interrupt(s) that fired */
pdata->an_int = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_INT);
axgbe_an73_clear_interrupts(pdata);
if (pdata->an_int) {
/* Clear the interrupt(s) that fired and process them */
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INT, ~pdata->an_int);
pthread_mutex_lock(&pdata->an_mutex);
axgbe_an73_state_machine(pdata);
pthread_mutex_unlock(&pdata->an_mutex);
} else {
/* Enable AN interrupts */
axgbe_an73_enable_interrupts(pdata);
}
}
static void axgbe_an37_isr(struct axgbe_port *pdata)
{
unsigned int reg = 0;
/* Disable AN interrupts */
axgbe_an37_disable_interrupts(pdata);
/* Save the interrupt(s) that fired */
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_STAT);
pdata->an_int = reg & AXGBE_AN_CL37_INT_MASK;
pdata->an_status = reg & ~AXGBE_AN_CL37_INT_MASK;
axgbe_an37_clear_interrupts(pdata);
if (pdata->an_int & 0x01) {
/* Clear the interrupt(s) that fired and process them */
reg &= ~AXGBE_AN_CL37_INT_MASK;
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_STAT, reg);
axgbe_an37_state_machine(pdata);
} else {
/* Enable AN interrupts */
axgbe_an37_enable_interrupts(pdata);
}
}
static void axgbe_an_isr(struct axgbe_port *pdata)
{
PMD_DRV_LOG(DEBUG, "AN interrupt received\n");
switch (pdata->an_mode) {
case AXGBE_AN_MODE_CL73:
case AXGBE_AN_MODE_CL73_REDRV:
axgbe_an73_isr(pdata);
break;
case AXGBE_AN_MODE_CL37:
case AXGBE_AN_MODE_CL37_SGMII:
axgbe_an37_isr(pdata);
break;
default:
break;
}
}
static void axgbe_an_combined_isr(struct axgbe_port *pdata)
{
axgbe_an_isr(pdata);
}
static void axgbe_an37_init(struct axgbe_port *pdata)
{
unsigned int advertising;
unsigned int reg = 0;
advertising = pdata->phy_if.phy_impl.an_advertising(pdata);
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_ADVERTISE);
if (advertising & ADVERTISED_Pause)
reg |= 0x100;
else
reg &= ~0x100;
if (advertising & ADVERTISED_Asym_Pause)
reg |= 0x80;
else
reg &= ~0x80;
/* Full duplex, but not half */
reg |= AXGBE_AN_CL37_FD_MASK;
reg &= ~AXGBE_AN_CL37_HD_MASK;
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_ADVERTISE, reg);
/* Set up the Control register */
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL);
reg &= ~AXGBE_AN_CL37_TX_CONFIG_MASK;
reg &= ~AXGBE_AN_CL37_PCS_MODE_MASK;
switch (pdata->an_mode) {
case AXGBE_AN_MODE_CL37:
reg |= AXGBE_AN_CL37_PCS_MODE_BASEX;
break;
case AXGBE_AN_MODE_CL37_SGMII:
reg |= AXGBE_AN_CL37_PCS_MODE_SGMII;
break;
default:
break;
}
reg |= AXGBE_AN_CL37_MII_CTRL_8BIT;
XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL, reg);
}
static void axgbe_an73_init(struct axgbe_port *pdata)
{
unsigned int advertising, reg;
advertising = pdata->phy_if.phy_impl.an_advertising(pdata);
/* Set up Advertisement register 3 first */
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
if (advertising & ADVERTISED_10000baseR_FEC)
reg |= 0xc000;
else
reg &= ~0xc000;
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2, reg);
/* Set up Advertisement register 2 next */
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1);
if (advertising & ADVERTISED_10000baseKR_Full)
reg |= 0x80;
else
reg &= ~0x80;
if ((advertising & ADVERTISED_1000baseKX_Full) ||
(advertising & ADVERTISED_2500baseX_Full))
reg |= 0x20;
else
reg &= ~0x20;
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1, reg);
/* Set up Advertisement register 1 last */
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
if (advertising & ADVERTISED_Pause)
reg |= 0x400;
else
reg &= ~0x400;
if (advertising & ADVERTISED_Asym_Pause)
reg |= 0x800;
else
reg &= ~0x800;
/* We don't intend to perform XNP */
reg &= ~AXGBE_XNP_NP_EXCHANGE;
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE, reg);
PMD_DRV_LOG(DEBUG, "CL73 AN initialized\n");
}
static void axgbe_an_init(struct axgbe_port *pdata)
{
/* Set up advertisement registers based on current settings */
pdata->an_mode = pdata->phy_if.phy_impl.an_mode(pdata);
switch (pdata->an_mode) {
case AXGBE_AN_MODE_CL73:
case AXGBE_AN_MODE_CL73_REDRV:
axgbe_an73_init(pdata);
break;
case AXGBE_AN_MODE_CL37:
case AXGBE_AN_MODE_CL37_SGMII:
axgbe_an37_init(pdata);
break;
default:
break;
}
}
static void axgbe_phy_adjust_link(struct axgbe_port *pdata)
{
if (pdata->phy.link) {
/* Flow control support */
pdata->pause_autoneg = pdata->phy.pause_autoneg;
if (pdata->tx_pause != (unsigned int)pdata->phy.tx_pause) {
pdata->hw_if.config_tx_flow_control(pdata);
pdata->tx_pause = pdata->phy.tx_pause;
}
if (pdata->rx_pause != (unsigned int)pdata->phy.rx_pause) {
pdata->hw_if.config_rx_flow_control(pdata);
pdata->rx_pause = pdata->phy.rx_pause;
}
/* Speed support */
if (pdata->phy_speed != pdata->phy.speed)
pdata->phy_speed = pdata->phy.speed;
if (pdata->phy_link != pdata->phy.link)
pdata->phy_link = pdata->phy.link;
} else if (pdata->phy_link) {
pdata->phy_link = 0;
pdata->phy_speed = SPEED_UNKNOWN;
}
}
static int axgbe_phy_config_fixed(struct axgbe_port *pdata)
{
enum axgbe_mode mode;
PMD_DRV_LOG(DEBUG, "fixed PHY configuration\n");
/* Disable auto-negotiation */
axgbe_an_disable(pdata);
/* Set specified mode for specified speed */
mode = pdata->phy_if.phy_impl.get_mode(pdata, pdata->phy.speed);
switch (mode) {
case AXGBE_MODE_KX_1000:
case AXGBE_MODE_KX_2500:
case AXGBE_MODE_KR:
case AXGBE_MODE_SGMII_100:
case AXGBE_MODE_SGMII_1000:
case AXGBE_MODE_X:
case AXGBE_MODE_SFI:
break;
case AXGBE_MODE_UNKNOWN:
default:
return -EINVAL;
}
/* Validate duplex mode */
if (pdata->phy.duplex != DUPLEX_FULL)
return -EINVAL;
axgbe_set_mode(pdata, mode);
return 0;
}
static int __axgbe_phy_config_aneg(struct axgbe_port *pdata)
{
int ret;
rte_bit_relaxed_set32(AXGBE_LINK_INIT, &pdata->dev_state);
pdata->link_check = rte_get_timer_cycles();
ret = pdata->phy_if.phy_impl.an_config(pdata);
if (ret)
return ret;
if (pdata->phy.autoneg != AUTONEG_ENABLE) {
ret = axgbe_phy_config_fixed(pdata);
if (ret || !pdata->kr_redrv)
return ret;
PMD_DRV_LOG(DEBUG, "AN redriver support\n");
} else {
PMD_DRV_LOG(DEBUG, "AN PHY configuration\n");
}
/* Disable auto-negotiation interrupt */
rte_intr_disable(&pdata->pci_dev->intr_handle);
/* Start auto-negotiation in a supported mode */
if (axgbe_use_mode(pdata, AXGBE_MODE_KR)) {
axgbe_set_mode(pdata, AXGBE_MODE_KR);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_KX_2500)) {
axgbe_set_mode(pdata, AXGBE_MODE_KX_2500);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_KX_1000)) {
axgbe_set_mode(pdata, AXGBE_MODE_KX_1000);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_SFI)) {
axgbe_set_mode(pdata, AXGBE_MODE_SFI);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_X)) {
axgbe_set_mode(pdata, AXGBE_MODE_X);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_SGMII_1000)) {
axgbe_set_mode(pdata, AXGBE_MODE_SGMII_1000);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_SGMII_100)) {
axgbe_set_mode(pdata, AXGBE_MODE_SGMII_100);
} else {
rte_intr_enable(&pdata->pci_dev->intr_handle);
return -EINVAL;
}
/* Disable and stop any in progress auto-negotiation */
axgbe_an_disable_all(pdata);
pdata->an_result = AXGBE_AN_READY;
pdata->an_state = AXGBE_AN_READY;
pdata->kr_state = AXGBE_RX_BPA;
pdata->kx_state = AXGBE_RX_BPA;
/* Re-enable auto-negotiation interrupt */
rte_intr_enable(&pdata->pci_dev->intr_handle);
axgbe_an37_enable_interrupts(pdata);
axgbe_an_init(pdata);
axgbe_an_restart(pdata);
return 0;
}
static int axgbe_phy_config_aneg(struct axgbe_port *pdata)
{
int ret;
pthread_mutex_lock(&pdata->an_mutex);
ret = __axgbe_phy_config_aneg(pdata);
if (ret)
rte_bit_relaxed_set32(AXGBE_LINK_ERR, &pdata->dev_state);
else
rte_bit_relaxed_clear32(AXGBE_LINK_ERR, &pdata->dev_state);
pthread_mutex_unlock(&pdata->an_mutex);
return ret;
}
static bool axgbe_phy_aneg_done(struct axgbe_port *pdata)
{
return pdata->an_result == AXGBE_AN_COMPLETE;
}
static void axgbe_check_link_timeout(struct axgbe_port *pdata)
{
unsigned long link_timeout;
unsigned long ticks;
link_timeout = pdata->link_check + (AXGBE_LINK_TIMEOUT *
2 * rte_get_timer_hz());
ticks = rte_get_timer_cycles();
if (time_after(ticks, link_timeout)) {
PMD_DRV_LOG(NOTICE, "AN link timeout\n");
axgbe_phy_config_aneg(pdata);
}
}
static enum axgbe_mode axgbe_phy_status_aneg(struct axgbe_port *pdata)
{
return pdata->phy_if.phy_impl.an_outcome(pdata);
}
static void axgbe_phy_status_result(struct axgbe_port *pdata)
{
enum axgbe_mode mode;
pdata->phy.lp_advertising = 0;
if ((pdata->phy.autoneg != AUTONEG_ENABLE) || pdata->parallel_detect)
mode = axgbe_cur_mode(pdata);
else
mode = axgbe_phy_status_aneg(pdata);
switch (mode) {
case AXGBE_MODE_SGMII_100:
pdata->phy.speed = SPEED_100;
break;
case AXGBE_MODE_X:
case AXGBE_MODE_KX_1000:
case AXGBE_MODE_SGMII_1000:
pdata->phy.speed = SPEED_1000;
break;
case AXGBE_MODE_KX_2500:
pdata->phy.speed = SPEED_2500;
break;
case AXGBE_MODE_KR:
case AXGBE_MODE_SFI:
pdata->phy.speed = SPEED_10000;
break;
case AXGBE_MODE_UNKNOWN:
default:
pdata->phy.speed = SPEED_UNKNOWN;
}
pdata->phy.duplex = DUPLEX_FULL;
axgbe_set_mode(pdata, mode);
}
static int autoneg_time_out(unsigned long autoneg_start_time)
{
unsigned long autoneg_timeout;
unsigned long ticks;
autoneg_timeout = autoneg_start_time + (AXGBE_LINK_TIMEOUT *
2 * rte_get_timer_hz());
ticks = rte_get_timer_cycles();
if (time_after(ticks, autoneg_timeout))
return 1;
else
return 0;
}
static void axgbe_phy_status(struct axgbe_port *pdata)
{
unsigned int link_aneg;
int an_restart, ret;
unsigned int reg = 0;
unsigned long autoneg_start_time;
if (rte_bit_relaxed_get32(AXGBE_LINK_ERR, &pdata->dev_state)) {
pdata->phy.link = 0;
goto adjust_link;
}
link_aneg = (pdata->phy.autoneg == AUTONEG_ENABLE);
pdata->phy.link = pdata->phy_if.phy_impl.link_status(pdata,
&an_restart);
if (an_restart) {
axgbe_phy_config_aneg(pdata);
return;
}
if (pdata->phy.link) {
if (link_aneg && !axgbe_phy_aneg_done(pdata)) {
if (axgbe_cur_mode(pdata) == AXGBE_MODE_SGMII_1000) {
/* autoneg not complete, so re-initializing */
/* and restarting it */
axgbe_an_init(pdata);
axgbe_an_restart(pdata);
reg = XMDIO_READ(pdata, MDIO_MMD_VEND2,
MDIO_VEND2_AN_STAT);
autoneg_start_time = rte_get_timer_cycles();
/* poll for autoneg to complete */
while (!(reg & AXGBE_AN_CL37_INT_CMPLT)) {
ret =
autoneg_time_out(autoneg_start_time);
if (ret)
break;
reg = XMDIO_READ(pdata,
MDIO_MMD_VEND2,
MDIO_VEND2_AN_STAT);
if (reg & AXGBE_AN_CL37_INT_CMPLT) {
axgbe_an37_isr(pdata);
break;
}
}
} else {
axgbe_check_link_timeout(pdata);
return;
}
}
axgbe_phy_status_result(pdata);
if (rte_bit_relaxed_get32(AXGBE_LINK_INIT, &pdata->dev_state))
rte_bit_relaxed_clear32(AXGBE_LINK_INIT,
&pdata->dev_state);
} else {
if (rte_bit_relaxed_get32(AXGBE_LINK_INIT, &pdata->dev_state)) {
axgbe_check_link_timeout(pdata);
if (link_aneg)
return;
}
axgbe_phy_status_result(pdata);
}
adjust_link:
axgbe_phy_adjust_link(pdata);
}
static void axgbe_phy_stop(struct axgbe_port *pdata)
{
PMD_DRV_LOG(DEBUG, "stopping PHY\n");
if (!pdata->phy_started)
return;
/* Indicate the PHY is down */
pdata->phy_started = 0;
/* Disable auto-negotiation */
axgbe_an_disable_all(pdata);
pdata->phy_if.phy_impl.stop(pdata);
pdata->phy.link = 0;
axgbe_phy_adjust_link(pdata);
}
static int axgbe_phy_start(struct axgbe_port *pdata)
{
int ret;
PMD_DRV_LOG(DEBUG, "starting PHY\n");
ret = pdata->phy_if.phy_impl.start(pdata);
if (ret)
return ret;
/* Set initial mode - call the mode setting routines
* directly to insure we are properly configured
*/
if (axgbe_use_mode(pdata, AXGBE_MODE_KR)) {
axgbe_kr_mode(pdata);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_KX_2500)) {
axgbe_kx_2500_mode(pdata);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_KX_1000)) {
axgbe_kx_1000_mode(pdata);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_SFI)) {
axgbe_sfi_mode(pdata);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_X)) {
axgbe_x_mode(pdata);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_SGMII_1000)) {
axgbe_sgmii_1000_mode(pdata);
} else if (axgbe_use_mode(pdata, AXGBE_MODE_SGMII_100)) {
axgbe_sgmii_100_mode(pdata);
} else {
ret = -EINVAL;
goto err_stop;
}
/* Indicate the PHY is up and running */
pdata->phy_started = 1;
axgbe_an_init(pdata);
axgbe_an_enable_interrupts(pdata);
return axgbe_phy_config_aneg(pdata);
err_stop:
pdata->phy_if.phy_impl.stop(pdata);
return ret;
}
static int axgbe_phy_reset(struct axgbe_port *pdata)
{
int ret;
ret = pdata->phy_if.phy_impl.reset(pdata);
if (ret)
return ret;
/* Disable auto-negotiation for now */
axgbe_an_disable_all(pdata);
/* Clear auto-negotiation interrupts */
axgbe_an_clear_interrupts_all(pdata);
return 0;
}
static int axgbe_phy_best_advertised_speed(struct axgbe_port *pdata)
{
if (pdata->phy.advertising & ADVERTISED_10000baseKR_Full)
return SPEED_10000;
else if (pdata->phy.advertising & ADVERTISED_10000baseT_Full)
return SPEED_10000;
else if (pdata->phy.advertising & ADVERTISED_2500baseX_Full)
return SPEED_2500;
else if (pdata->phy.advertising & ADVERTISED_1000baseKX_Full)
return SPEED_1000;
else if (pdata->phy.advertising & ADVERTISED_1000baseT_Full)
return SPEED_1000;
else if (pdata->phy.advertising & ADVERTISED_100baseT_Full)
return SPEED_100;
return SPEED_UNKNOWN;
}
static int axgbe_phy_init(struct axgbe_port *pdata)
{
int ret;
pdata->mdio_mmd = MDIO_MMD_PCS;
/* Check for FEC support */
pdata->fec_ability = XMDIO_READ(pdata, MDIO_MMD_PMAPMD,
MDIO_PMA_10GBR_FECABLE);
pdata->fec_ability &= (MDIO_PMA_10GBR_FECABLE_ABLE |
MDIO_PMA_10GBR_FECABLE_ERRABLE);
/* Setup the phy (including supported features) */
ret = pdata->phy_if.phy_impl.init(pdata);
if (ret)
return ret;
pdata->phy.advertising = pdata->phy.supported;
pdata->phy.address = 0;
if (pdata->phy.advertising & ADVERTISED_Autoneg) {
pdata->phy.autoneg = AUTONEG_ENABLE;
pdata->phy.speed = SPEED_UNKNOWN;
pdata->phy.duplex = DUPLEX_UNKNOWN;
} else {
pdata->phy.autoneg = AUTONEG_DISABLE;
pdata->phy.speed = axgbe_phy_best_advertised_speed(pdata);
pdata->phy.duplex = DUPLEX_FULL;
}
pdata->phy.link = 0;
pdata->phy.pause_autoneg = pdata->pause_autoneg;
pdata->phy.tx_pause = pdata->tx_pause;
pdata->phy.rx_pause = pdata->rx_pause;
/* Fix up Flow Control advertising */
pdata->phy.advertising &= ~ADVERTISED_Pause;
pdata->phy.advertising &= ~ADVERTISED_Asym_Pause;
if (pdata->rx_pause) {
pdata->phy.advertising |= ADVERTISED_Pause;
pdata->phy.advertising |= ADVERTISED_Asym_Pause;
}
if (pdata->tx_pause)
pdata->phy.advertising ^= ADVERTISED_Asym_Pause;
return 0;
}
void axgbe_init_function_ptrs_phy(struct axgbe_phy_if *phy_if)
{
phy_if->phy_init = axgbe_phy_init;
phy_if->phy_reset = axgbe_phy_reset;
phy_if->phy_start = axgbe_phy_start;
phy_if->phy_stop = axgbe_phy_stop;
phy_if->phy_status = axgbe_phy_status;
phy_if->phy_config_aneg = axgbe_phy_config_aneg;
phy_if->an_isr = axgbe_an_combined_isr;
}
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