[PATCH RFC net-next v2 10/17] net: stmmac: Introduce internal PCS offset-based CSR access

Serge Semin
2024-06-24T13:28:35Z

Internal PCS module can be found on the DW GMAC v3.x and DW QoS Eth
IP-cores. The register space is almost identical except the base address
and the SGMII/RGMII/SMII Control and Status Register layout. Thus the
common PCS code could be set free from passing the PCS CSRs base address
by using the base calcultaed on the MAC-device info init stage. The same
approach has been utilized in the STMMAC MMC, PTP and EST modules.

Let's convert the PCS module to using it too by adding the PCS CSRs offset
declarations and the CSRs base address calculation for the detected
IP-core.

While at it replace the GMAC_ prefix with PCS_ to mark the common STMMAC
PCS macros in the same way as it's done in the mmc.h, stmmac_ptp.h and
stmmac_est.h for the respective common modules.

Note the phylink_pcs_ops instance has been defined empty for now. It will
be populated later upon the rest of the PCS-code movement to the
stmmac_pcs.c module.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
---
.../stmicro/stmmac/dwmac-qcom-ethqos.c | 8 +-
.../ethernet/stmicro/stmmac/dwmac1000_core.c | 11 ++-
.../net/ethernet/stmicro/stmmac/dwmac4_core.c | 12 +--
drivers/net/ethernet/stmicro/stmmac/hwif.c | 14 ++++
drivers/net/ethernet/stmicro/stmmac/hwif.h | 4 +-
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 +
.../net/ethernet/stmicro/stmmac/stmmac_pcs.c | 30 ++++---
.../net/ethernet/stmicro/stmmac/stmmac_pcs.h | 79 +++++++++----------
8 files changed, 89 insertions(+), 70 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 80eb72bc6311..d0bcebe87ee8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -633,7 +633,7 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
RGMII_IO_MACRO_CONFIG2);
ethqos_set_serdes_speed(ethqos, SPEED_2500);
- stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 0, 0, 0);
+ stmmac_pcs_ctrl_ane(priv, priv->pcsaddr, 0, 0, 0);
break;
case SPEED_1000:
val &= ~ETHQOS_MAC_CTRL_PORT_SEL;
@@ -641,12 +641,12 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
RGMII_IO_MACRO_CONFIG2);
ethqos_set_serdes_speed(ethqos, SPEED_1000);
- stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
+ stmmac_pcs_ctrl_ane(priv, priv->pcsaddr, 1, 0, 0);
break;
case SPEED_100:
val |= ETHQOS_MAC_CTRL_PORT_SEL | ETHQOS_MAC_CTRL_SPEED_MODE;
ethqos_set_serdes_speed(ethqos, SPEED_1000);
- stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
+ stmmac_pcs_ctrl_ane(priv, priv->pcsaddr, 1, 0, 0);
break;
case SPEED_10:
val |= ETHQOS_MAC_CTRL_PORT_SEL;
@@ -656,7 +656,7 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
SGMII_10M_RX_CLK_DVDR),
RGMII_IO_MACRO_CONFIG);
ethqos_set_serdes_speed(ethqos, SPEED_1000);
- stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
+ stmmac_pcs_ctrl_ane(priv, priv->pcsaddr, 1, 0, 0);
break;
}

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 3ba65ea3e46f..e525b92955b4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -296,7 +296,7 @@ static int dwmac1000_irq_status(struct mac_device_info *hw,
x->irq_rx_path_exit_lpi_mode_n++;
}

- dwmac_pcs_isr(ioaddr, GMAC_PCS_BASE, intr_status, x);
+ dwmac_pcs_isr(hw->priv->pcsaddr, intr_status, x);

if (intr_status & PCS_RGSMIIIS_IRQ) {
/* TODO Dummy-read to clear the IRQ status */
@@ -365,10 +365,10 @@ static void dwmac1000_set_eee_timer(struct mac_device_info *hw, int ls, int tw)
writel(value, ioaddr + LPI_TIMER_CTRL);
}

-static void dwmac1000_ctrl_ane(void __iomem *ioaddr, bool ane, bool srgmi_ral,
+static void dwmac1000_ctrl_ane(void __iomem *pcsaddr, bool ane, bool srgmi_ral,
bool loopback)
{
- dwmac_ctrl_ane(ioaddr, GMAC_PCS_BASE, ane, srgmi_ral, loopback);
+ dwmac_ctrl_ane(pcsaddr, ane, srgmi_ral, loopback);
}

static int dwmac1000_mii_pcs_validate(struct phylink_pcs *pcs,
@@ -414,8 +414,7 @@ static int dwmac1000_mii_pcs_config(struct phylink_pcs *pcs,
{
struct mac_device_info *hw = phylink_pcs_to_mac_dev_info(pcs);

- return dwmac_pcs_config(hw, neg_mode, interface, advertising,
- GMAC_PCS_BASE);
+ return dwmac_pcs_config(hw, neg_mode, advertising, advertising);
}

static void dwmac1000_mii_pcs_get_state(struct phylink_pcs *pcs,
@@ -442,7 +441,7 @@ static void dwmac1000_mii_pcs_get_state(struct phylink_pcs *pcs,
state->duplex = status & GMAC_RGSMIIIS_LNKMOD_MASK ?
DUPLEX_FULL : DUPLEX_HALF;

- dwmac_pcs_get_state(hw, state, GMAC_PCS_BASE);
+ dwmac_pcs_get_state(hw, state);
}

static const struct phylink_pcs_ops dwmac1000_mii_pcs_ops = {
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 5cf2a6cb8f66..e51c95732bad 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -750,10 +750,10 @@ static void dwmac4_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
}
}

-static void dwmac4_ctrl_ane(void __iomem *ioaddr, bool ane, bool srgmi_ral,
+static void dwmac4_ctrl_ane(void __iomem *pcsaddr, bool ane, bool srgmi_ral,
bool loopback)
{
- dwmac_ctrl_ane(ioaddr, GMAC_PCS_BASE, ane, srgmi_ral, loopback);
+ dwmac_ctrl_ane(pcsaddr, ane, srgmi_ral, loopback);
}

static int dwmac4_mii_pcs_validate(struct phylink_pcs *pcs,
@@ -798,8 +798,7 @@ static int dwmac4_mii_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
{
struct mac_device_info *hw = phylink_pcs_to_mac_dev_info(pcs);

- return dwmac_pcs_config(hw, neg_mode, interface, advertising,
- GMAC_PCS_BASE);
+ return dwmac_pcs_config(hw, advertising, interface, advertising);
}

static void dwmac4_mii_pcs_get_state(struct phylink_pcs *pcs,
@@ -833,7 +832,7 @@ static void dwmac4_mii_pcs_get_state(struct phylink_pcs *pcs,
state->duplex = status & GMAC_PHYIF_CTRLSTATUS_LNKMOD_MASK ?
DUPLEX_FULL : DUPLEX_HALF;

- dwmac_pcs_get_state(hw, state, GMAC_PCS_BASE);
+ dwmac_pcs_get_state(hw, state);
}

static const struct phylink_pcs_ops dwmac4_mii_pcs_ops = {
@@ -924,7 +923,8 @@ static int dwmac4_irq_status(struct mac_device_info *hw,
x->irq_rx_path_exit_lpi_mode_n++;
}

- dwmac_pcs_isr(ioaddr, GMAC_PCS_BASE, intr_status, x);
+ dwmac_pcs_isr(hw->priv->pcsaddr, intr_status, x);
+
if (intr_status & PCS_RGSMIIIS_IRQ) {
/* TODO Dummy-read to clear the IRQ status */
readl(ioaddr + GMAC_PHYIF_CONTROL_STATUS);
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.c b/drivers/net/ethernet/stmicro/stmmac/hwif.c
index 84fd57b76fad..3666893acb69 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.c
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.c
@@ -6,6 +6,7 @@

#include "common.h"
#include "stmmac.h"
+#include "stmmac_pcs.h"
#include "stmmac_ptp.h"
#include "stmmac_est.h"

@@ -116,6 +117,7 @@ static const struct stmmac_hwif_entry {
const void *tc;
const void *mmc;
const void *est;
+ const void *pcs;
int (*setup)(struct stmmac_priv *priv);
int (*quirks)(struct stmmac_priv *priv);
} stmmac_hw[] = {
@@ -144,12 +146,14 @@ static const struct stmmac_hwif_entry {
.xgmac = false,
.min_id = 0,
.regs = {
+ .pcs_off = PCS_GMAC3_X_OFFSET,
.ptp_off = PTP_GMAC3_X_OFFSET,
.mmc_off = MMC_GMAC3_X_OFFSET,
},
.desc = NULL,
.dma = &dwmac1000_dma_ops,
.mac = &dwmac1000_ops,
+ .pcs = &dwmac_pcs_ops,
.hwtimestamp = &stmmac_ptp,
.mode = NULL,
.tc = NULL,
@@ -162,6 +166,7 @@ static const struct stmmac_hwif_entry {
.xgmac = false,
.min_id = 0,
.regs = {
+ .pcs_off = PCS_GMAC4_OFFSET,
.ptp_off = PTP_GMAC4_OFFSET,
.mmc_off = MMC_GMAC4_OFFSET,
.est_off = EST_GMAC4_OFFSET,
@@ -169,6 +174,7 @@ static const struct stmmac_hwif_entry {
.desc = &dwmac4_desc_ops,
.dma = &dwmac4_dma_ops,
.mac = &dwmac4_ops,
+ .pcs = &dwmac_pcs_ops,
.hwtimestamp = &stmmac_ptp,
.mode = NULL,
.tc = &dwmac510_tc_ops,
@@ -182,6 +188,7 @@ static const struct stmmac_hwif_entry {
.xgmac = false,
.min_id = DWMAC_CORE_4_00,
.regs = {
+ .pcs_off = PCS_GMAC4_OFFSET,
.ptp_off = PTP_GMAC4_OFFSET,
.mmc_off = MMC_GMAC4_OFFSET,
.est_off = EST_GMAC4_OFFSET,
@@ -189,6 +196,7 @@ static const struct stmmac_hwif_entry {
.desc = &dwmac4_desc_ops,
.dma = &dwmac4_dma_ops,
.mac = &dwmac410_ops,
+ .pcs = &dwmac_pcs_ops,
.hwtimestamp = &stmmac_ptp,
.mode = &dwmac4_ring_mode_ops,
.tc = &dwmac510_tc_ops,
@@ -202,6 +210,7 @@ static const struct stmmac_hwif_entry {
.xgmac = false,
.min_id = DWMAC_CORE_4_10,
.regs = {
+ .pcs_off = PCS_GMAC4_OFFSET,
.ptp_off = PTP_GMAC4_OFFSET,
.mmc_off = MMC_GMAC4_OFFSET,
.est_off = EST_GMAC4_OFFSET,
@@ -209,6 +218,7 @@ static const struct stmmac_hwif_entry {
.desc = &dwmac4_desc_ops,
.dma = &dwmac410_dma_ops,
.mac = &dwmac410_ops,
+ .pcs = &dwmac_pcs_ops,
.hwtimestamp = &stmmac_ptp,
.mode = &dwmac4_ring_mode_ops,
.tc = &dwmac510_tc_ops,
@@ -222,6 +232,7 @@ static const struct stmmac_hwif_entry {
.xgmac = false,
.min_id = DWMAC_CORE_5_10,
.regs = {
+ .pcs_off = PCS_GMAC4_OFFSET,
.ptp_off = PTP_GMAC4_OFFSET,
.mmc_off = MMC_GMAC4_OFFSET,
.est_off = EST_GMAC4_OFFSET,
@@ -229,6 +240,7 @@ static const struct stmmac_hwif_entry {
.desc = &dwmac4_desc_ops,
.dma = &dwmac410_dma_ops,
.mac = &dwmac510_ops,
+ .pcs = &dwmac_pcs_ops,
.hwtimestamp = &stmmac_ptp,
.mode = &dwmac4_ring_mode_ops,
.tc = &dwmac510_tc_ops,
@@ -356,6 +368,8 @@ int stmmac_hwif_init(struct stmmac_priv *priv)
priv->hw = mac;
priv->ptpaddr = priv->ioaddr + entry->regs.ptp_off;
priv->mmcaddr = priv->ioaddr + entry->regs.mmc_off;
+ if (entry->pcs)
+ priv->pcsaddr = priv->ioaddr + entry->regs.pcs_off;
if (entry->est)
priv->estaddr = priv->ioaddr + entry->regs.est_off;

diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 8a17e7d6e37d..ba930a87b71a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -376,7 +376,7 @@ struct stmmac_ops {
struct stmmac_extra_stats *x, u32 rx_queues,
u32 tx_queues);
/* PCS calls */
- void (*pcs_ctrl_ane)(void __iomem *ioaddr, bool ane, bool srgmi_ral,
+ void (*pcs_ctrl_ane)(void __iomem *pcsaddr, bool ane, bool srgmi_ral,
bool loopback);
/* Safety Features */
int (*safety_feat_config)(void __iomem *ioaddr, unsigned int asp,
@@ -670,6 +670,7 @@ struct stmmac_est_ops {
stmmac_do_void_callback(__priv, est, irq_status, __args)

struct stmmac_regs_off {
+ u32 pcs_off;
u32 ptp_off;
u32 mmc_off;
u32 est_off;
@@ -692,6 +693,7 @@ extern const struct stmmac_desc_ops dwxgmac210_desc_ops;
extern const struct stmmac_mmc_ops dwmac_mmc_ops;
extern const struct stmmac_mmc_ops dwxgmac_mmc_ops;
extern const struct stmmac_est_ops dwmac510_est_ops;
+extern const struct phylink_pcs_ops dwmac_pcs_ops;

#define GMAC_VERSION 0x00000020 /* GMAC CORE Version */
#define GMAC4_VERSION 0x00000110 /* GMAC4+ CORE Version */
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index b23b920eedb1..8091d162545a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -312,6 +312,7 @@ struct stmmac_priv {
struct mutex aux_ts_lock;
wait_queue_head_t tstamp_busy_wait;

+ void __iomem *pcsaddr;
void __iomem *mmcaddr;
void __iomem *ptpaddr;
void __iomem *estaddr;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c
index 849e6f121505..41b99f7e36e6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.c
@@ -3,35 +3,35 @@

int dwmac_pcs_config(struct mac_device_info *hw, unsigned int neg_mode,
phy_interface_t interface,
- const unsigned long *advertising,
- unsigned int reg_base)
+ const unsigned long *advertising)
{
+ struct stmmac_priv *priv = hw->priv;
u32 val;

- val = readl(hw->pcsr + GMAC_AN_CTRL(reg_base));
+ val = readl(priv->pcsaddr + PCS_AN_CTRL);

- val |= GMAC_AN_CTRL_ANE | GMAC_AN_CTRL_RAN;
+ val |= PCS_AN_CTRL_ANE | PCS_AN_CTRL_RAN;

if (hw->ps)
- val |= GMAC_AN_CTRL_SGMRAL;
+ val |= PCS_AN_CTRL_SGMRAL;

- writel(val, hw->pcsr + GMAC_AN_CTRL(reg_base));
+ writel(val, priv->pcsaddr + PCS_AN_CTRL);

return 0;
}

void dwmac_pcs_get_state(struct mac_device_info *hw,
- struct phylink_link_state *state,
- unsigned int reg_base)
+ struct phylink_link_state *state)
{
+ struct stmmac_priv *priv = hw->priv;
u32 val;

- val = readl(hw->pcsr + GMAC_ANE_LPA(reg_base));
+ val = readl(priv->pcsaddr + PCS_ANE_LPA);

linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
state->lp_advertising);

- if (val & GMAC_ANE_FD) {
+ if (val & PCS_ANE_FD) {
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
state->lp_advertising);
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
@@ -40,7 +40,7 @@ void dwmac_pcs_get_state(struct mac_device_info *hw,
state->lp_advertising);
}

- if (val & GMAC_ANE_HD) {
+ if (val & PCS_ANE_HD) {
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
state->lp_advertising);
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
@@ -49,10 +49,14 @@ void dwmac_pcs_get_state(struct mac_device_info *hw,
state->lp_advertising);
}

+ /* TODO Make sure that STMMAC_PCS_PAUSE STMMAC_PCS_ASYM_PAUSE usage is legitimate */
linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT,
state->lp_advertising,
- FIELD_GET(GMAC_ANE_PSE, val) & STMMAC_PCS_PAUSE);
+ FIELD_GET(PCS_ANE_PSE, val) & STMMAC_PCS_PAUSE);
linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
state->lp_advertising,
- FIELD_GET(GMAC_ANE_PSE, val) & STMMAC_PCS_ASYM_PAUSE);
+ FIELD_GET(PCS_ANE_PSE, val) & STMMAC_PCS_ASYM_PAUSE);
}
+
+const struct phylink_pcs_ops dwmac_pcs_ops = {
+};
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h
index 27ea7f4d789d..62be3921ac91 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pcs.h
@@ -13,61 +13,63 @@
#include <linux/io.h>
#include "common.h"

+#define PCS_GMAC4_OFFSET 0x000000e0
+#define PCS_GMAC3_X_OFFSET 0x000000c0
+
/* PCS registers (AN/TBI/SGMII/RGMII) offsets */
-#define GMAC_AN_CTRL(x) (x) /* AN control */
-#define GMAC_AN_STATUS(x) (x + 0x4) /* AN status */
-#define GMAC_ANE_ADV(x) (x + 0x8) /* ANE Advertisement */
-#define GMAC_ANE_LPA(x) (x + 0xc) /* ANE link partener ability */
-#define GMAC_ANE_EXP(x) (x + 0x10) /* ANE expansion */
-#define GMAC_TBI(x) (x + 0x14) /* TBI extend status */
+#define PCS_AN_CTRL 0x00 /* AN control */
+#define PCS_AN_STATUS 0x04 /* AN status */
+#define PCS_ANE_ADV 0x08 /* ANE Advertisement */
+#define PCS_ANE_LPA 0x0c /* ANE link partener ability */
+#define PCS_ANE_EXP 0x10 /* ANE expansion */
+#define PCS_TBI_EXT 0x14 /* TBI extended status */

/* AN Configuration defines */
-#define GMAC_AN_CTRL_RAN BIT(9) /* Restart Auto-Negotiation */
-#define GMAC_AN_CTRL_ANE BIT(12) /* Auto-Negotiation Enable */
-#define GMAC_AN_CTRL_ELE BIT(14) /* External Loopback Enable */
-#define GMAC_AN_CTRL_ECD BIT(16) /* Enable Comma Detect */
-#define GMAC_AN_CTRL_LR BIT(17) /* Lock to Reference */
-#define GMAC_AN_CTRL_SGMRAL BIT(18) /* SGMII RAL Control */
+#define PCS_AN_CTRL_RAN BIT(9) /* Restart Auto-Negotiation */
+#define PCS_AN_CTRL_ANE BIT(12) /* Auto-Negotiation Enable */
+#define PCS_AN_CTRL_ELE BIT(14) /* External Loopback Enable */
+#define PCS_AN_CTRL_ECD BIT(16) /* Enable Comma Detect */
+#define PCS_AN_CTRL_LR BIT(17) /* Lock to Reference */
+#define PCS_AN_CTRL_SGMRAL BIT(18) /* SGMII RAL Control */

/* AN Status defines */
-#define GMAC_AN_STATUS_LS BIT(2) /* Link Status 0:down 1:up */
-#define GMAC_AN_STATUS_ANA BIT(3) /* Auto-Negotiation Ability */
-#define GMAC_AN_STATUS_ANC BIT(5) /* Auto-Negotiation Complete */
-#define GMAC_AN_STATUS_ES BIT(8) /* Extended Status */
+#define PCS_AN_STATUS_LS BIT(2) /* Link Status 0:down 1:up */
+#define PCS_AN_STATUS_ANA BIT(3) /* Auto-Negotiation Ability */
+#define PCS_AN_STATUS_ANC BIT(5) /* Auto-Negotiation Complete */
+#define PCS_AN_STATUS_ES BIT(8) /* Extended Status Ability */

/* ADV and LPA defines */
-#define GMAC_ANE_FD BIT(5)
-#define GMAC_ANE_HD BIT(6)
-#define GMAC_ANE_PSE GENMASK(8, 7)
-#define GMAC_ANE_PSE_SHIFT 7
-#define GMAC_ANE_RFE GENMASK(13, 12)
-#define GMAC_ANE_RFE_SHIFT 12
-#define GMAC_ANE_ACK BIT(14)
+#define PCS_ANE_FD BIT(5) /* AN Full-duplex flag */
+#define PCS_ANE_HD BIT(6) /* AN Half-duplex flag */
+#define PCS_ANE_PSE GENMASK(8, 7) /* AN Pause Encoding */
+#define PCS_ANE_PSE_SHIFT 7
+#define PCS_ANE_RFE GENMASK(13, 12) /* AN Remote Fault Encoding */
+#define PCS_ANE_RFE_SHIFT 12
+#define PCS_ANE_ACK BIT(14) /* AN Base-page acknowledge */

/**
* dwmac_pcs_isr - TBI, RTBI, or SGMII PHY ISR
* @ioaddr: IO registers pointer
- * @reg: Base address of the AN Control Register.
* @intr_status: GMAC core interrupt status
* @x: pointer to log these events as stats
* Description: it is the ISR for PCS events: Auto-Negotiation Completed and
* Link status.
*/
-static inline void dwmac_pcs_isr(void __iomem *ioaddr, u32 reg,
+static inline void dwmac_pcs_isr(void __iomem *pcsaddr,
unsigned int intr_status,
struct stmmac_extra_stats *x)
{
- u32 val = readl(ioaddr + GMAC_AN_STATUS(reg));
+ u32 val = readl(pcsaddr + PCS_AN_STATUS);

if (intr_status & PCS_ANE_IRQ) {
x->irq_pcs_ane_n++;
- if (val & GMAC_AN_STATUS_ANC)
+ if (val & PCS_AN_STATUS_ANC)
pr_info("stmmac_pcs: ANE process completed\n");
}

if (intr_status & PCS_LINK_IRQ) {
x->irq_pcs_link_n++;
- if (val & GMAC_AN_STATUS_LS)
+ if (val & PCS_AN_STATUS_LS)
pr_info("stmmac_pcs: Link Up\n");
else
pr_info("stmmac_pcs: Link Down\n");
@@ -77,7 +79,6 @@ static inline void dwmac_pcs_isr(void __iomem *ioaddr, u32 reg,
/**
* dwmac_ctrl_ane - To program the AN Control Register.
* @ioaddr: IO registers pointer
- * @reg: Base address of the AN Control Register.
* @ane: to enable the auto-negotiation
* @srgmi_ral: to manage MAC-2-MAC SGMII connections.
* @loopback: to cause the PHY to loopback tx data into rx path.
@@ -85,36 +86,34 @@ static inline void dwmac_pcs_isr(void __iomem *ioaddr, u32 reg,
* and init the ANE, select loopback (usually for debugging purpose) and
* configure SGMII RAL.
*/
-static inline void dwmac_ctrl_ane(void __iomem *ioaddr, u32 reg, bool ane,
+static inline void dwmac_ctrl_ane(void __iomem *pcsaddr, bool ane,
bool srgmi_ral, bool loopback)
{
- u32 value = readl(ioaddr + GMAC_AN_CTRL(reg));
+ u32 value = readl(pcsaddr + PCS_AN_CTRL);

/* Enable and restart the Auto-Negotiation */
if (ane)
- value |= GMAC_AN_CTRL_ANE | GMAC_AN_CTRL_RAN;
+ value |= PCS_AN_CTRL_ANE | PCS_AN_CTRL_RAN;
else
- value &= ~GMAC_AN_CTRL_ANE;
+ value &= ~PCS_AN_CTRL_ANE;

/* In case of MAC-2-MAC connection, block is configured to operate
* according to MAC conf register.
*/
if (srgmi_ral)
- value |= GMAC_AN_CTRL_SGMRAL;
+ value |= PCS_AN_CTRL_SGMRAL;

if (loopback)
- value |= GMAC_AN_CTRL_ELE;
+ value |= PCS_AN_CTRL_ELE;

- writel(value, ioaddr + GMAC_AN_CTRL(reg));
+ writel(value, pcsaddr + PCS_AN_CTRL);
}

int dwmac_pcs_config(struct mac_device_info *hw, unsigned int neg_mode,
phy_interface_t interface,
- const unsigned long *advertising,
- unsigned int reg_base);
+ const unsigned long *advertising);

void dwmac_pcs_get_state(struct mac_device_info *hw,
- struct phylink_link_state *state,
- unsigned int reg_base);
+ struct phylink_link_state *state);

#endif /* __STMMAC_PCS_H__ */
--
2.43.0