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xpcs: SW override method for UPHY Rx lane bringup

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Bug 5087758

Change-Id: Icd75b08b4644016db21e74a5188e515b387b0899
Signed-off-by: Bhadram Varka <vbhadram@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/kernel/nvethernetrm/+/3399512
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Revanth Kumar Uppala <ruppala@nvidia.com>
Reviewed-by: Narayana Reddy P <narayanr@nvidia.com>
Reviewed-by: Srinivas Ramachandran <srinivasra@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Tested-by: Revanth Kumar Uppala <ruppala@nvidia.com>
This commit is contained in:
Bhadram Varka
2025-06-19 09:14:38 +00:00
committed by mobile promotions
parent 6f0373c303
commit b704cd863a
2 changed files with 185 additions and 138 deletions
Download Patch File Download Diff File Expand all files Collapse all files

294
osi/core/xpcs.c
View File

@@ -576,17 +576,87 @@ fail:
}
/**
* @brief xpcs_lane_bring_up - Bring up UPHY Tx/Rx lanes
* @brief perform_xpcs_rx_eq_reset_and_train - Rx EQ training via sw override
*
* Algorithm: This routine bring up the UPHY Tx/Rx lanes
* through XPCS FSM wrapper.
* Algorithm: This routine executes RX EQ training
* through SW Override method.
*
* @param[in] osi_core: OSI core data structure.
*
* @retval 0 on success
* @retval -1 on failure.
*/
nve32_t xpcs_lane_bring_up(struct osi_core_priv_data *osi_core)
static nve32_t perform_xpcs_rx_eq_reset_and_train(struct osi_core_priv_data *osi_core)
{
nveu32_t retry = 2U;
nveu32_t count;
nveu32_t val = 0;
nve32_t cond;
nve32_t ret = 0;
cond = COND_NOT_MET;
count = 0;
/* RX_EQ_RESET timeout is 2msec. Bug 5087758 */
while (cond == COND_NOT_MET) {
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + XPCS_WRAP_T26X_UPHY_RX_CONTROL_0_0);
if ((val & XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_EQ_RESET) == 0U) {
cond = COND_MET;
} else {
if (count > retry) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"RX_EQ_RESET polling timeout: ", val);
ret = -1;
goto fail;
}
count++;
osi_core->osd_ops.usleep(1000U);
}
}
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + XPCS_WRAP_T26X_UPHY_RX_CONTROL_0_0);
val |= XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_EQ_TRAIN_EN;
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + XPCS_WRAP_T26X_UPHY_RX_CONTROL_0_0);
count = 0;
cond = COND_NOT_MET;
retry = 70U;
/* EQ Training Polling timeout 70msec. Bug 5087758 */
while (cond == COND_NOT_MET) {
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + XPCS_WRAP_T26X_UPHY_RX_CONTROL_0_0);
if ((val & XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_EQ_TRAIN_EN) == 0U) {
cond = COND_MET;
} else {
if (count > retry) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"RX_EQ_TRAIN_EN polling timeout: ", val);
ret = -1;
goto fail;
}
count++;
osi_core->osd_ops.usleep(1000U);
}
}
fail:
return ret;
}
/**
* @brief sw_ovveride_method_for_uphy_rx_lane - uphy Rx lane bringup via sw override
*
* Algorithm: This routine executes uphy RX lane bringup
* through SW Override method.
*
* @param[in] osi_core: OSI core data structure.
* @param[in] uphy_rx_ctrl: UPHY Rx control register
*
* @retval 0 on success
* @retval -1 on failure.
*/
static inline nve32_t sw_ovveride_method_for_uphy_rx_lane(struct osi_core_priv_data *osi_core,
const nveu32_t uphy_rx_ctrl)
{
struct core_local *l_core = (struct core_local *)(void *)osi_core;
nveu32_t retry = 7U;
@@ -595,99 +665,45 @@ nve32_t xpcs_lane_bring_up(struct osi_core_priv_data *osi_core)
nve32_t cond;
nve32_t ret = 0;
if (xpcs_uphy_lane_bring_up(osi_core,
XPCS_WRAP_UPHY_HW_INIT_CTRL_TX_EN) < 0) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"UPHY TX lane bring-up failed\n", 0ULL);
ret = -1;
goto fail;
}
if (osi_core->mac != OSI_MAC_HW_MGBE) {
if (xpcs_uphy_lane_bring_up(osi_core,
XPCS_WRAP_UPHY_HW_INIT_CTRL_RX_EN) < 0) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"UPHY RX lane bring-up failed\n", 0ULL);
/* Peform UPHY Rx lane power down on Lane bring up failure path.
* FIXME: Discuss with HW team further whether this is necessary step or not
*/
if (xpcs_uphy_lane_bring_up(osi_core,
XPCS_WRAP_UPHY_HW_INIT_CTRL_RX_P_DN) < 0) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"UPHY Rx lane power down failed\n", 0ULL);
}
ret = -1;
goto fail;
}
} else {
if (l_core->lane_powered_up == OSI_ENABLE) {
goto step10;
}
val = osi_readla(osi_core,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step1 RX_SW_OVRD */
if (l_core->lane_powered_up == OSI_DISABLE) {
/* Step1: set RX_SW_OVRD to 1 */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val |= XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_SW_OVRD;
osi_writela(osi_core, val,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val = osi_readla(osi_core,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step2 RX_IDDQ */
val &= ~(XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_IDDQ);
osi_writela(osi_core, val,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
val = osi_readla(osi_core,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step2 AUX_RX_IDDQ */
val &= ~(XPCS_WRAP_UPHY_RX_CONTROL_0_0_AUX_RX_IDDQ);
osi_writela(osi_core, val,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step2: set AUX_RX_IDDQ to 0 and RX_IDDQ to 0 */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val &= ~(XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_IDDQ | XPCS_WRAP_UPHY_RX_CONTROL_0_0_AUX_RX_IDDQ);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
/* Step3: wait for 1usec, HW recommended value is 50nsec minimum */
osi_core->osd_ops.udelay(1U);
/* Step4 RX_SLEEP */
val = osi_readla(osi_core,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step4: set RX_SLEEP to 0 */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val &= ~(XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_SLEEP);
osi_writela(osi_core, val,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
/* Step5: wait for 1usec, HW recommended value is 500nsec minimum */
osi_core->osd_ops.udelay(1U);
/* Step6 RX_CAL_EN */
/* Step6: set RX_CAL_EN to 1 */
val = osi_readla(osi_core,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
(nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val |= XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_CAL_EN;
osi_writela(osi_core, val,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
/* Step7 poll for Rx cal enable */
cond = COND_NOT_MET;
count = 0;
while (cond == COND_NOT_MET) {
val = osi_readla(osi_core,
(nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
if ((val & XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_CAL_EN) == 0U) {
cond = COND_MET;
} else {
if (count > retry) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"RX_CAL_EN polling timeout: ", val);
ret = -1;
goto fail;
}
@@ -705,59 +721,101 @@ nve32_t xpcs_lane_bring_up(struct osi_core_priv_data *osi_core)
/* Step8: wait for 1usec, HW recommended value is 50nsec minimum */
osi_core->osd_ops.udelay(1U);
/* Step9 RX_DATA_EN */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step9: set RX_DATA_EN to 1 */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val |= XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_DATA_EN;
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
/* set lane_powered_up to OSI_ENABLE */
l_core->lane_powered_up = OSI_ENABLE;
step10:
}
/* Step10 reset RX_PCS_PHY_RDY */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val &= ~XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_PCS_PHY_RDY;
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
/* Step11: wait for 1usec, HW recommended value is 50nsec minimum */
osi_core->osd_ops.udelay(1U);
/* Step12 RX_CDR_RESET */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step12 RX_CDR_RESET and RX_EQ_RESET for Thor */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val |= XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_CDR_RESET;
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
if (osi_core->mac == OSI_MAC_HW_MGBE_T26X) {
val |= XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_EQ_RESET;
}
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
/* Step13: wait for 1usec, HW recommended value is 50nsec minimum */
osi_core->osd_ops.udelay(1U);
/* Step14 RX_PCS_PHY_RDY */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val |= XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_PCS_PHY_RDY;
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
/* Step14: wait for 30ms */
osi_core->osd_ops.usleep(OSI_DELAY_30000US);
/* Step15 RX_CDR_RESET */
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
/* Step15: Clear RX_CDR_RESET and RX_EQ_RESET for Thor*/
val = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
val &= ~(XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_CDR_RESET);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base +
XPCS_WRAP_UPHY_RX_CONTROL_0_0);
osi_writela(osi_core, val, (nveu8_t *)osi_core->xpcs_base + uphy_rx_ctrl);
if (osi_core->mac == OSI_MAC_HW_MGBE_T26X) {
ret = perform_xpcs_rx_eq_reset_and_train(osi_core);
} else {
/* Step16: wait for 30ms */
osi_core->osd_ops.usleep(OSI_DELAY_30000US);
}
fail:
return ret;
}
/**
* @brief xpcs_lane_bring_up - Bring up UPHY Tx/Rx lanes
*
* Algorithm: This routine bring up the UPHY Tx/Rx lanes
* through XPCS FSM wrapper.
*
* @param[in] osi_core: OSI core data structure.
*
* @retval 0 on success
* @retval -1 on failure.
*/
nve32_t xpcs_lane_bring_up(struct osi_core_priv_data *osi_core)
{
struct core_local *l_core = (struct core_local *)(void *)osi_core;
const nveu32_t uphy_rx_ctrl_reg[OSI_MAX_MAC_IP_TYPES] = {
0U, XPCS_WRAP_UPHY_RX_CONTROL_0_0, XPCS_WRAP_T26X_UPHY_RX_CONTROL_0_0
};
nve32_t ret = 0;
if (xpcs_uphy_lane_bring_up(osi_core,
XPCS_WRAP_UPHY_HW_INIT_CTRL_TX_EN) < 0) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"UPHY TX lane bring-up failed\n", 0ULL);
ret = -1;
goto fail;
}
if (osi_core->mac == OSI_MAC_HW_EQOS) {
if (xpcs_uphy_lane_bring_up(osi_core,
XPCS_WRAP_UPHY_HW_INIT_CTRL_RX_EN) < 0) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"UPHY RX lane bring-up failed\n", 0ULL);
ret = -1;
goto fail;
}
} else {
ret = sw_ovveride_method_for_uphy_rx_lane(osi_core, uphy_rx_ctrl_reg[osi_core->mac]);
if (ret < 0) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
"UPHY Rx lane bringup failed with sw ovveride method", 0ULL);
goto fail;
}
}
if (xpcs_check_pcs_lock_status(osi_core) < 0) {
if (l_core->lane_status == OSI_ENABLE) {
OSI_CORE_ERR(osi_core->osd, OSI_LOG_ARG_HW_FAIL,
@@ -921,34 +979,18 @@ nve32_t xpcs_init(struct osi_core_priv_data *osi_core)
if ((osi_core->mac == OSI_MAC_HW_MGBE_T26X) &&
(osi_core->uphy_gbe_mode == OSI_GBE_MODE_10G)) {
/* Added below programming sequence from hw scripts */
value = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_CONFIG_0);
value = osi_readla(osi_core, (nveu8_t *)osi_core->xpcs_base + T26X_XPCS_WRAP_CONFIG_0);
value &= ~OSI_BIT(0);
osi_writela(osi_core, value, (nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_CONFIG_0);
osi_writela(osi_core, value, (nveu8_t *)osi_core->xpcs_base + T26X_XPCS_WRAP_CONFIG_0);
/* Program the delay values for HW method for Tx lane bringup */
osi_writela(osi_core, XPCS_10G_WRAP_UPHY_RX_CTRL_2_SLEEP_CAL_EN_DLY,
(nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_UPHY_TX_CTRL_2);
osi_writela(osi_core, XPCS_10G_WRAP_UPHY_RX_CTRL_2_SLEEP_CAL_EN_DLY,
(nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_UPHY_RX_CTRL_2);
(nveu8_t *)osi_core->xpcs_base + T26X_XPCS_WRAP_UPHY_TX_CTRL_2);
osi_writela(osi_core, XPCS_10G_WRAP_UPHY_TX_CTRL_3_DATAREADY_DATAEN_DLY,
(nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_UPHY_TX_CTRL_3);
osi_writela(osi_core, XPCS_10G_WRAP_UPHY_RX_CTRL_3_CAL_DONE_DATA_EN_DLY,
(nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_UPHY_RX_CTRL_3);
osi_writela(osi_core,
XLGPCS_WRAP_UPHY_TO_CTRL2_EQ_DONE_TOV,
(nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_UPHY_T0_CTRL_2_0);
value = osi_readla(osi_core,
(nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_UPHY_RX_CTRL_5_0);
value |= XLGPCS_WRAP_UPHY_RX_CTRL5_RX_EQ_ENABLE;
osi_writela(osi_core, value,
(nveu8_t *)osi_core->xpcs_base +
T26X_XPCS_WRAP_UPHY_RX_CTRL_5_0);
(nveu8_t *)osi_core->xpcs_base + T26X_XPCS_WRAP_UPHY_TX_CTRL_3);
osi_writela(osi_core, XPCS_WRAP_UPHY_RX_CTRL_12_EQ_RESET_WIDTH_PCLK,
(nveu8_t *)osi_core->xpcs_base + T26X_XPCS_WRAP_UPHY_RX_CTRL_12);
}
if (xpcs_lane_bring_up(osi_core) < 0) {

5
osi/core/xpcs.h
View File

@@ -45,6 +45,7 @@
#define XPCS_WRAP_UPHY_HW_INIT_CTRL 0x8020
#define XPCS_WRAP_UPHY_STATUS 0x8044
#define XPCS_WRAP_UPHY_RX_CONTROL_0_0 0x801C
#define XPCS_WRAP_T26X_UPHY_RX_CONTROL_0_0 0x8034
#define XPCS_WRAP_INTERRUPT_STATUS 0x8050
#define T26X_XPCS_WRAP_UPHY_HW_INIT_CTRL 0x8038
#define T26X_XPCS_WRAP_UPHY_STATUS 0x8080
@@ -71,6 +72,7 @@
#define T26X_XPCS_WRAP_UPHY_RX_CTRL_2 0x8040
#define T26X_XPCS_WRAP_UPHY_RX_CTRL_3 0x8044
#define T26X_XPCS_WRAP_UPHY_TIMEOUT_CONTROL_0_0 0x8070
#define T26X_XPCS_WRAP_UPHY_RX_CTRL_12 0x8058
/** @} */
@@ -135,6 +137,7 @@
#define XPCS_10G_WRAP_UPHY_TX_CTRL_3_DATAREADY_DATAEN_DLY 0x50U
#define XPCS_10G_WRAP_UPHY_RX_CTRL_3_CAL_DONE_DATA_EN_DLY 0x32U
#define XPCS_WRAP_UPHY_TIMEOUT_CONTROL_0_0_VALUE 0x3FFFD90
#define XPCS_WRAP_UPHY_RX_CTRL_12_EQ_RESET_WIDTH_PCLK 0x200U
#define EQOS_XPCS_WRAP_UPHY_HW_INIT_CTRL 0x8038
#define EQOS_XPCS_WRAP_UPHY_STATUS 0x8064
@@ -188,8 +191,10 @@
OSI_BIT(7))
#define XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_CAL_EN OSI_BIT(8)
#define XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_CDR_RESET OSI_BIT(9)
#define XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_EQ_RESET OSI_BIT(12)
#define XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_PCS_PHY_RDY OSI_BIT(10)
#define XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_SW_OVRD OSI_BIT(31)
#define XPCS_WRAP_UPHY_RX_CONTROL_0_0_RX_EQ_TRAIN_EN OSI_BIT(11)
#define XPCS_WRAP_UPHY_STATUS_TX_P_UP_STATUS OSI_BIT(0)
#define XPCS_WRAP_UPHY_STATUS_RX_P_UP_STATUS OSI_BIT(2)
#define XPCS_SR_PMA_KR_FEC_CTRL_FEC_EN OSI_BIT(0)