drivers/net/ti/icss_mii_rt.h - u-boot - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */

 /* PRU-ICSS MII_RT register definitions
  *
  * Copyright (C) 2015-2024 Texas Instruments Incorporated - https://www.ti.com
  */

 #ifndef __NET_PRUSS_MII_RT_H__
 #define __NET_PRUSS_MII_RT_H__

 #include <regmap.h>

 /* PRUSS_MII_RT Registers */
 #define PRUSS_MII_RT_RXCFG0		0x0
 #define PRUSS_MII_RT_RXCFG1		0x4
 #define PRUSS_MII_RT_TXCFG0		0x10
 #define PRUSS_MII_RT_TXCFG1		0x14
 #define PRUSS_MII_RT_TX_CRC0		0x20
 #define PRUSS_MII_RT_TX_CRC1		0x24
 #define PRUSS_MII_RT_TX_IPG0		0x30
 #define PRUSS_MII_RT_TX_IPG1		0x34
 #define PRUSS_MII_RT_PRS0		0x38
 #define PRUSS_MII_RT_PRS1		0x3c
 #define PRUSS_MII_RT_RX_FRMS0		0x40
 #define PRUSS_MII_RT_RX_FRMS1		0x44
 #define PRUSS_MII_RT_RX_PCNT0		0x48
 #define PRUSS_MII_RT_RX_PCNT1		0x4c
 #define PRUSS_MII_RT_RX_ERR0		0x50
 #define PRUSS_MII_RT_RX_ERR1		0x54

 /* PRUSS_MII_RT_RXCFG0/1 bits */
 #define PRUSS_MII_RT_RXCFG_RX_ENABLE		BIT(0)
 #define PRUSS_MII_RT_RXCFG_RX_DATA_RDY_MODE_DIS	BIT(1)
 #define PRUSS_MII_RT_RXCFG_RX_CUT_PREAMBLE	BIT(2)
 #define PRUSS_MII_RT_RXCFG_RX_MUX_SEL		BIT(3)
 #define PRUSS_MII_RT_RXCFG_RX_L2_EN		BIT(4)
 #define PRUSS_MII_RT_RXCFG_RX_BYTE_SWAP		BIT(5)
 #define PRUSS_MII_RT_RXCFG_RX_AUTO_FWD_PRE	BIT(6)
 #define PRUSS_MII_RT_RXCFG_RX_L2_EOF_SCLR_DIS	BIT(9)

 /* PRUSS_MII_RT_TXCFG0/1 bits */
 #define PRUSS_MII_RT_TXCFG_TX_ENABLE		BIT(0)
 #define PRUSS_MII_RT_TXCFG_TX_AUTO_PREAMBLE	BIT(1)
 #define PRUSS_MII_RT_TXCFG_TX_EN_MODE		BIT(2)
 #define PRUSS_MII_RT_TXCFG_TX_BYTE_SWAP		BIT(3)
 #define PRUSS_MII_RT_TXCFG_TX_MUX_SEL		BIT(8)
 #define PRUSS_MII_RT_TXCFG_PRE_TX_AUTO_SEQUENCE	BIT(9)
 #define PRUSS_MII_RT_TXCFG_PRE_TX_AUTO_ESC_ERR	BIT(10)
 #define PRUSS_MII_RT_TXCFG_TX_32_MODE_EN	BIT(11)
 #define PRUSS_MII_RT_TXCFG_TX_IPG_WIRE_CLK_EN	BIT(12)	/* SR2.0 onwards */

 #define PRUSS_MII_RT_TXCFG_TX_START_DELAY_SHIFT	16
 #define PRUSS_MII_RT_TXCFG_TX_START_DELAY_MASK	GENMASK(25, 16)

 #define PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_SHIFT	28
 #define PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_MASK	GENMASK(30, 28)

 /* PRUSS_MII_RT_TX_IPG0/1 bits */
 #define PRUSS_MII_RT_TX_IPG_IPG_SHIFT	0
 #define PRUSS_MII_RT_TX_IPG_IPG_MASK	GENMASK(9, 0)

 /* PRUSS_MII_RT_PRS0/1 bits */
 #define PRUSS_MII_RT_PRS_COL	BIT(0)
 #define PRUSS_MII_RT_PRS_CRS	BIT(1)

 /* PRUSS_MII_RT_RX_FRMS0/1 bits */
 #define PRUSS_MII_RT_RX_FRMS_MIN_FRM_SHIFT	0
 #define PRUSS_MII_RT_RX_FRMS_MIN_FRM_MASK	GENMASK(15, 0)

 #define PRUSS_MII_RT_RX_FRMS_MAX_FRM_SHIFT	16
 #define PRUSS_MII_RT_RX_FRMS_MAX_FRM_MASK	GENMASK(31, 16)

 /* Min/Max in MII_RT_RX_FRMS */
 /* For EMAC and Switch */
 #define PRUSS_MII_RT_RX_FRMS_MAX	(VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
 #define PRUSS_MII_RT_RX_FRMS_MIN_FRM	(64)

 /* for HSR and PRP */
 #define PRUSS_MII_RT_RX_FRMS_MAX_FRM_LRE	(PRUSS_MII_RT_RX_FRMS_MAX + \
 						 ICSS_LRE_TAG_RCT_SIZE)
 /* PRUSS_MII_RT_RX_PCNT0/1 bits */
 #define PRUSS_MII_RT_RX_PCNT_MIN_PCNT_SHIFT	0
 #define PRUSS_MII_RT_RX_PCNT_MIN_PCNT_MASK	GENMASK(3, 0)

 #define PRUSS_MII_RT_RX_PCNT_MAX_PCNT_SHIFT	4
 #define PRUSS_MII_RT_RX_PCNT_MAX_PCNT_MASK	GENMASK(7, 4)

 /* PRUSS_MII_RT_RX_ERR0/1 bits */
 #define PRUSS_MII_RT_RX_ERR_MIN_PCNT_ERR	BIT(0)
 #define PRUSS_MII_RT_RX_ERR_MAX_PCNT_ERR	BIT(1)
 #define PRUSS_MII_RT_RX_ERR_MIN_FRM_ERR		BIT(2)
 #define PRUSS_MII_RT_RX_ERR_MAX_FRM_ERR		BIT(3)

 #define ICSSG_CFG_OFFSET	0
 #define RGMII_CFG_OFFSET	4

 /* Constant to choose between MII0 and MII1 */
 #define ICSS_MII0	0
 #define ICSS_MII1	1

 /* ICSSG_CFG Register bits */
 #define ICSSG_CFG_SGMII_MODE	BIT(16)
 #define ICSSG_CFG_TX_PRU_EN	BIT(11)
 #define ICSSG_CFG_RX_SFD_TX_SOF_EN	BIT(10)
 #define ICSSG_CFG_RTU_PRU_PSI_SHARE_EN	BIT(9)
 #define ICSSG_CFG_IEP1_TX_EN	BIT(8)
 #define ICSSG_CFG_MII1_MODE	GENMASK(6, 5)
 #define ICSSG_CFG_MII1_MODE_SHIFT	5
 #define ICSSG_CFG_MII0_MODE	GENMASK(4, 3)
 #define ICSSG_CFG_MII0_MODE_SHIFT	3
 #define ICSSG_CFG_RX_L2_G_EN	BIT(2)
 #define ICSSG_CFG_TX_L2_EN	BIT(1)
 #define ICSSG_CFG_TX_L1_EN	BIT(0)

 enum mii_mode { MII_MODE_MII = 0, MII_MODE_RGMII, MII_MODE_SGMII };

 /* RGMII CFG Register bits */
 #define RGMII_CFG_INBAND_EN_MII0	BIT(16)
 #define RGMII_CFG_GIG_EN_MII0	BIT(17)
 #define RGMII_CFG_INBAND_EN_MII1	BIT(20)
 #define RGMII_CFG_GIG_EN_MII1	BIT(21)
 #define RGMII_CFG_FULL_DUPLEX_MII0	BIT(18)
 #define RGMII_CFG_FULL_DUPLEX_MII1	BIT(22)
 #define RGMII_CFG_SPEED_MII0	GENMASK(2, 1)
 #define RGMII_CFG_SPEED_MII1	GENMASK(6, 5)
 #define RGMII_CFG_SPEED_MII0_SHIFT	1
 #define RGMII_CFG_SPEED_MII1_SHIFT	5
 #define RGMII_CFG_FULLDUPLEX_MII0	BIT(3)
 #define RGMII_CFG_FULLDUPLEX_MII1	BIT(7)
 #define RGMII_CFG_FULLDUPLEX_MII0_SHIFT	3
 #define RGMII_CFG_FULLDUPLEX_MII1_SHIFT	7
 #define RGMII_CFG_SPEED_10M	0
 #define RGMII_CFG_SPEED_100M	1
 #define RGMII_CFG_SPEED_1G	2

 static inline void icssg_mii_update_ipg(struct regmap *mii_rt, int mii, u32 ipg)
 {
 	u32 val;

 	if (mii == ICSS_MII0) {
 		regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG0, ipg);
 	} else {
 		/* Errata workaround: IEP1 is not read by h/w unless IEP0 is written */
 		regmap_read(mii_rt, PRUSS_MII_RT_TX_IPG0, &val);
 		regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG1, ipg);
 		regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG0, val);
 	}
 }

 static inline void icssg_update_rgmii_cfg(struct regmap *miig_rt, int speed,
 					  bool full_duplex, int slice, struct prueth_priv *priv)
 {
 	u32 gig_en_mask, gig_val = 0, full_duplex_mask, full_duplex_val = 0;
 	u32 inband_en_mask, inband_val = 0;

 	gig_en_mask = (slice == ICSS_MII0) ? RGMII_CFG_GIG_EN_MII0 :
 					RGMII_CFG_GIG_EN_MII1;
 	if (speed == SPEED_1000)
 		gig_val = gig_en_mask;
 	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, gig_en_mask, gig_val);

 	inband_en_mask = (slice == ICSS_MII0) ? RGMII_CFG_INBAND_EN_MII0 :
 					RGMII_CFG_INBAND_EN_MII1;
 	if (speed == SPEED_10 && phy_interface_is_rgmii(priv->phydev))
 		inband_val = inband_en_mask;
 	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, inband_en_mask, inband_val);

 	full_duplex_mask = (slice == ICSS_MII0) ? RGMII_CFG_FULL_DUPLEX_MII0 :
 					   RGMII_CFG_FULL_DUPLEX_MII1;
 	if (full_duplex)
 		full_duplex_val = full_duplex_mask;
 	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, full_duplex_mask,
 			   full_duplex_val);
 }

 static inline void icssg_miig_set_interface_mode(struct regmap *miig_rt, int mii, int phy_if)
 {
 	u32 val, mask, shift;

 	mask = mii == ICSS_MII0 ? ICSSG_CFG_MII0_MODE : ICSSG_CFG_MII1_MODE;
 	shift =  mii == ICSS_MII0 ? ICSSG_CFG_MII0_MODE_SHIFT : ICSSG_CFG_MII1_MODE_SHIFT;

 	val = MII_MODE_RGMII;
 	if (phy_if == PHY_INTERFACE_MODE_MII)
 		val = MII_MODE_MII;

 	val <<= shift;
 	regmap_update_bits(miig_rt, ICSSG_CFG_OFFSET, mask, val);
 	regmap_read(miig_rt, ICSSG_CFG_OFFSET, &val);
 }

 #endif /* __NET_PRUSS_MII_RT_H__ */
	/* SPDX-License-Identifier: GPL-2.0 */

	/* PRU-ICSS MII_RT register definitions
	*
	* Copyright (C) 2015-2024 Texas Instruments Incorporated - https://www.ti.com
	*/

	#ifndef __NET_PRUSS_MII_RT_H__
	#define __NET_PRUSS_MII_RT_H__

	#include <regmap.h>

	/* PRUSS_MII_RT Registers */
	#define PRUSS_MII_RT_RXCFG0 0x0
	#define PRUSS_MII_RT_RXCFG1 0x4
	#define PRUSS_MII_RT_TXCFG0 0x10
	#define PRUSS_MII_RT_TXCFG1 0x14
	#define PRUSS_MII_RT_TX_CRC0 0x20
	#define PRUSS_MII_RT_TX_CRC1 0x24
	#define PRUSS_MII_RT_TX_IPG0 0x30
	#define PRUSS_MII_RT_TX_IPG1 0x34
	#define PRUSS_MII_RT_PRS0 0x38
	#define PRUSS_MII_RT_PRS1 0x3c
	#define PRUSS_MII_RT_RX_FRMS0 0x40
	#define PRUSS_MII_RT_RX_FRMS1 0x44
	#define PRUSS_MII_RT_RX_PCNT0 0x48
	#define PRUSS_MII_RT_RX_PCNT1 0x4c
	#define PRUSS_MII_RT_RX_ERR0 0x50
	#define PRUSS_MII_RT_RX_ERR1 0x54

	/* PRUSS_MII_RT_RXCFG0/1 bits */
	#define PRUSS_MII_RT_RXCFG_RX_ENABLE BIT(0)
	#define PRUSS_MII_RT_RXCFG_RX_DATA_RDY_MODE_DIS BIT(1)
	#define PRUSS_MII_RT_RXCFG_RX_CUT_PREAMBLE BIT(2)
	#define PRUSS_MII_RT_RXCFG_RX_MUX_SEL BIT(3)
	#define PRUSS_MII_RT_RXCFG_RX_L2_EN BIT(4)
	#define PRUSS_MII_RT_RXCFG_RX_BYTE_SWAP BIT(5)
	#define PRUSS_MII_RT_RXCFG_RX_AUTO_FWD_PRE BIT(6)
	#define PRUSS_MII_RT_RXCFG_RX_L2_EOF_SCLR_DIS BIT(9)

	/* PRUSS_MII_RT_TXCFG0/1 bits */
	#define PRUSS_MII_RT_TXCFG_TX_ENABLE BIT(0)
	#define PRUSS_MII_RT_TXCFG_TX_AUTO_PREAMBLE BIT(1)
	#define PRUSS_MII_RT_TXCFG_TX_EN_MODE BIT(2)
	#define PRUSS_MII_RT_TXCFG_TX_BYTE_SWAP BIT(3)
	#define PRUSS_MII_RT_TXCFG_TX_MUX_SEL BIT(8)
	#define PRUSS_MII_RT_TXCFG_PRE_TX_AUTO_SEQUENCE BIT(9)
	#define PRUSS_MII_RT_TXCFG_PRE_TX_AUTO_ESC_ERR BIT(10)
	#define PRUSS_MII_RT_TXCFG_TX_32_MODE_EN BIT(11)
	#define PRUSS_MII_RT_TXCFG_TX_IPG_WIRE_CLK_EN BIT(12) /* SR2.0 onwards */

	#define PRUSS_MII_RT_TXCFG_TX_START_DELAY_SHIFT 16
	#define PRUSS_MII_RT_TXCFG_TX_START_DELAY_MASK GENMASK(25, 16)

	#define PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_SHIFT 28
	#define PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_MASK GENMASK(30, 28)

	/* PRUSS_MII_RT_TX_IPG0/1 bits */
	#define PRUSS_MII_RT_TX_IPG_IPG_SHIFT 0
	#define PRUSS_MII_RT_TX_IPG_IPG_MASK GENMASK(9, 0)

	/* PRUSS_MII_RT_PRS0/1 bits */
	#define PRUSS_MII_RT_PRS_COL BIT(0)
	#define PRUSS_MII_RT_PRS_CRS BIT(1)

	/* PRUSS_MII_RT_RX_FRMS0/1 bits */
	#define PRUSS_MII_RT_RX_FRMS_MIN_FRM_SHIFT 0
	#define PRUSS_MII_RT_RX_FRMS_MIN_FRM_MASK GENMASK(15, 0)

	#define PRUSS_MII_RT_RX_FRMS_MAX_FRM_SHIFT 16
	#define PRUSS_MII_RT_RX_FRMS_MAX_FRM_MASK GENMASK(31, 16)

	/* Min/Max in MII_RT_RX_FRMS */
	/* For EMAC and Switch */
	#define PRUSS_MII_RT_RX_FRMS_MAX (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
	#define PRUSS_MII_RT_RX_FRMS_MIN_FRM (64)

	/* for HSR and PRP */
	#define PRUSS_MII_RT_RX_FRMS_MAX_FRM_LRE (PRUSS_MII_RT_RX_FRMS_MAX + \
	ICSS_LRE_TAG_RCT_SIZE)
	/* PRUSS_MII_RT_RX_PCNT0/1 bits */
	#define PRUSS_MII_RT_RX_PCNT_MIN_PCNT_SHIFT 0
	#define PRUSS_MII_RT_RX_PCNT_MIN_PCNT_MASK GENMASK(3, 0)

	#define PRUSS_MII_RT_RX_PCNT_MAX_PCNT_SHIFT 4
	#define PRUSS_MII_RT_RX_PCNT_MAX_PCNT_MASK GENMASK(7, 4)

	/* PRUSS_MII_RT_RX_ERR0/1 bits */
	#define PRUSS_MII_RT_RX_ERR_MIN_PCNT_ERR BIT(0)
	#define PRUSS_MII_RT_RX_ERR_MAX_PCNT_ERR BIT(1)
	#define PRUSS_MII_RT_RX_ERR_MIN_FRM_ERR BIT(2)
	#define PRUSS_MII_RT_RX_ERR_MAX_FRM_ERR BIT(3)

	#define ICSSG_CFG_OFFSET 0
	#define RGMII_CFG_OFFSET 4

	/* Constant to choose between MII0 and MII1 */
	#define ICSS_MII0 0
	#define ICSS_MII1 1

	/* ICSSG_CFG Register bits */
	#define ICSSG_CFG_SGMII_MODE BIT(16)
	#define ICSSG_CFG_TX_PRU_EN BIT(11)
	#define ICSSG_CFG_RX_SFD_TX_SOF_EN BIT(10)
	#define ICSSG_CFG_RTU_PRU_PSI_SHARE_EN BIT(9)
	#define ICSSG_CFG_IEP1_TX_EN BIT(8)
	#define ICSSG_CFG_MII1_MODE GENMASK(6, 5)
	#define ICSSG_CFG_MII1_MODE_SHIFT 5
	#define ICSSG_CFG_MII0_MODE GENMASK(4, 3)
	#define ICSSG_CFG_MII0_MODE_SHIFT 3
	#define ICSSG_CFG_RX_L2_G_EN BIT(2)
	#define ICSSG_CFG_TX_L2_EN BIT(1)
	#define ICSSG_CFG_TX_L1_EN BIT(0)

	enum mii_mode { MII_MODE_MII = 0, MII_MODE_RGMII, MII_MODE_SGMII };

	/* RGMII CFG Register bits */
	#define RGMII_CFG_INBAND_EN_MII0 BIT(16)
	#define RGMII_CFG_GIG_EN_MII0 BIT(17)
	#define RGMII_CFG_INBAND_EN_MII1 BIT(20)
	#define RGMII_CFG_GIG_EN_MII1 BIT(21)
	#define RGMII_CFG_FULL_DUPLEX_MII0 BIT(18)
	#define RGMII_CFG_FULL_DUPLEX_MII1 BIT(22)
	#define RGMII_CFG_SPEED_MII0 GENMASK(2, 1)
	#define RGMII_CFG_SPEED_MII1 GENMASK(6, 5)
	#define RGMII_CFG_SPEED_MII0_SHIFT 1
	#define RGMII_CFG_SPEED_MII1_SHIFT 5
	#define RGMII_CFG_FULLDUPLEX_MII0 BIT(3)
	#define RGMII_CFG_FULLDUPLEX_MII1 BIT(7)
	#define RGMII_CFG_FULLDUPLEX_MII0_SHIFT 3
	#define RGMII_CFG_FULLDUPLEX_MII1_SHIFT 7
	#define RGMII_CFG_SPEED_10M 0
	#define RGMII_CFG_SPEED_100M 1
	#define RGMII_CFG_SPEED_1G 2

	static inline void icssg_mii_update_ipg(struct regmap *mii_rt, int mii, u32 ipg)
	{
	u32 val;

	if (mii == ICSS_MII0) {
	regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG0, ipg);
	} else {
	/* Errata workaround: IEP1 is not read by h/w unless IEP0 is written */
	regmap_read(mii_rt, PRUSS_MII_RT_TX_IPG0, &val);
	regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG1, ipg);
	regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG0, val);
	}
	}

	static inline void icssg_update_rgmii_cfg(struct regmap *miig_rt, int speed,
	bool full_duplex, int slice, struct prueth_priv *priv)
	{
	u32 gig_en_mask, gig_val = 0, full_duplex_mask, full_duplex_val = 0;
	u32 inband_en_mask, inband_val = 0;

	gig_en_mask = (slice == ICSS_MII0) ? RGMII_CFG_GIG_EN_MII0 :
	RGMII_CFG_GIG_EN_MII1;
	if (speed == SPEED_1000)
	gig_val = gig_en_mask;
	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, gig_en_mask, gig_val);

	inband_en_mask = (slice == ICSS_MII0) ? RGMII_CFG_INBAND_EN_MII0 :
	RGMII_CFG_INBAND_EN_MII1;
	if (speed == SPEED_10 && phy_interface_is_rgmii(priv->phydev))
	inband_val = inband_en_mask;
	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, inband_en_mask, inband_val);

	full_duplex_mask = (slice == ICSS_MII0) ? RGMII_CFG_FULL_DUPLEX_MII0 :
	RGMII_CFG_FULL_DUPLEX_MII1;
	if (full_duplex)
	full_duplex_val = full_duplex_mask;
	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, full_duplex_mask,
	full_duplex_val);
	}

	static inline void icssg_miig_set_interface_mode(struct regmap *miig_rt, int mii, int phy_if)
	{
	u32 val, mask, shift;

	mask = mii == ICSS_MII0 ? ICSSG_CFG_MII0_MODE : ICSSG_CFG_MII1_MODE;
	shift = mii == ICSS_MII0 ? ICSSG_CFG_MII0_MODE_SHIFT : ICSSG_CFG_MII1_MODE_SHIFT;

	val = MII_MODE_RGMII;
	if (phy_if == PHY_INTERFACE_MODE_MII)
	val = MII_MODE_MII;

	val <<= shift;
	regmap_update_bits(miig_rt, ICSSG_CFG_OFFSET, mask, val);
	regmap_read(miig_rt, ICSSG_CFG_OFFSET, &val);
	}

	#endif /* __NET_PRUSS_MII_RT_H__ */