drivers/net/sh_eth.h - uboot-imx - Git at Google

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * sh_eth.h - Driver for Renesas SuperH ethernet controller.
  *
  * Copyright (C) 2008 - 2012 Renesas Solutions Corp.
  * Copyright (c) 2008 - 2012 Nobuhiro Iwamatsu
  * Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>
  */

 #include <netdev.h>
 #include <asm/types.h>

 #define SHETHER_NAME "sh_eth"

 #if defined(CONFIG_SH)
 /* Malloc returns addresses in the P1 area (cacheable). However we need to
    use area P2 (non-cacheable) */
 #define ADDR_TO_P2(addr)	((((int)(addr) & ~0xe0000000) | 0xa0000000))

 /* The ethernet controller needs to use physical addresses */
 #if defined(CONFIG_SH_32BIT)
 #define ADDR_TO_PHY(addr)	((((int)(addr) & ~0xe0000000) | 0x40000000))
 #else
 #define ADDR_TO_PHY(addr)	((int)(addr) & ~0xe0000000)
 #endif
 #elif defined(CONFIG_ARM)
 #ifndef inl
 #define inl	readl
 #define outl	writel
 #endif
 #define ADDR_TO_PHY(addr)	((int)(addr))
 #define ADDR_TO_P2(addr)	(addr)
 #endif /* defined(CONFIG_SH) */

 /* base padding size is 16 */
 #ifndef CONFIG_SH_ETHER_ALIGNE_SIZE
 #define CONFIG_SH_ETHER_ALIGNE_SIZE 16
 #endif

 /* Number of supported ports */
 #define MAX_PORT_NUM	2

 /* Buffers must be big enough to hold the largest ethernet frame. Also, rx
    buffers must be a multiple of 32 bytes */
 #define MAX_BUF_SIZE	(48 * 32)

 /* The number of tx descriptors must be large enough to point to 5 or more
    frames. If each frame uses 2 descriptors, at least 10 descriptors are needed.
    We use one descriptor per frame */
 #define NUM_TX_DESC		8

 /* The size of the tx descriptor is determined by how much padding is used.
    4, 20, or 52 bytes of padding can be used */
 #define TX_DESC_PADDING	(CONFIG_SH_ETHER_ALIGNE_SIZE - 12)

 /* Tx descriptor. We always use 3 bytes of padding */
 struct tx_desc_s {
 	volatile u32 td0;
 	u32 td1;
 	u32 td2;		/* Buffer start */
 	u8 padding[TX_DESC_PADDING];	/* aligned cache line size */
 };

 /* There is no limitation in the number of rx descriptors */
 #define NUM_RX_DESC	8

 /* The size of the rx descriptor is determined by how much padding is used.
    4, 20, or 52 bytes of padding can be used */
 #define RX_DESC_PADDING	(CONFIG_SH_ETHER_ALIGNE_SIZE - 12)
 /* aligned cache line size */
 #define RX_BUF_ALIGNE_SIZE	(CONFIG_SH_ETHER_ALIGNE_SIZE > 32 ? 64 : 32)

 /* Rx descriptor. We always use 4 bytes of padding */
 struct rx_desc_s {
 	volatile u32 rd0;
 	volatile u32 rd1;
 	u32 rd2;		/* Buffer start */
 	u8 padding[TX_DESC_PADDING];	/* aligned cache line size */
 };

 struct sh_eth_info {
 	struct tx_desc_s *tx_desc_alloc;
 	struct tx_desc_s *tx_desc_base;
 	struct tx_desc_s *tx_desc_cur;
 	struct rx_desc_s *rx_desc_alloc;
 	struct rx_desc_s *rx_desc_base;
 	struct rx_desc_s *rx_desc_cur;
 	u8 *rx_buf_alloc;
 	u8 *rx_buf_base;
 	u8 mac_addr[6];
 	u8 phy_addr;
 	struct eth_device *dev;
 	struct phy_device *phydev;
 	void __iomem *iobase;
 };

 struct sh_eth_dev {
 	int port;
 	struct sh_eth_info port_info[MAX_PORT_NUM];
 };

 /* from linux/drivers/net/ethernet/renesas/sh_eth.h */
 enum {
 	/* E-DMAC registers */
 	EDSR = 0,
 	EDMR,
 	EDTRR,
 	EDRRR,
 	EESR,
 	EESIPR,
 	TDLAR,
 	TDFAR,
 	TDFXR,
 	TDFFR,
 	RDLAR,
 	RDFAR,
 	RDFXR,
 	RDFFR,
 	TRSCER,
 	RMFCR,
 	TFTR,
 	FDR,
 	RMCR,
 	EDOCR,
 	TFUCR,
 	RFOCR,
 	FCFTR,
 	RPADIR,
 	TRIMD,
 	RBWAR,
 	TBRAR,

 	/* Ether registers */
 	ECMR,
 	ECSR,
 	ECSIPR,
 	PIR,
 	PSR,
 	RDMLR,
 	PIPR,
 	RFLR,
 	IPGR,
 	APR,
 	MPR,
 	PFTCR,
 	PFRCR,
 	RFCR,
 	RFCF,
 	TPAUSER,
 	TPAUSECR,
 	BCFR,
 	BCFRR,
 	GECMR,
 	BCULR,
 	MAHR,
 	MALR,
 	TROCR,
 	CDCR,
 	LCCR,
 	CNDCR,
 	CEFCR,
 	FRECR,
 	TSFRCR,
 	TLFRCR,
 	CERCR,
 	CEECR,
 	RMIIMR, /* R8A7790 */
 	MAFCR,
 	RTRATE,
 	CSMR,
 	RMII_MII,

 	/* This value must be written at last. */
 	SH_ETH_MAX_REGISTER_OFFSET,
 };

 static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
 	[EDSR]	= 0x0000,
 	[EDMR]	= 0x0400,
 	[EDTRR]	= 0x0408,
 	[EDRRR]	= 0x0410,
 	[EESR]	= 0x0428,
 	[EESIPR]	= 0x0430,
 	[TDLAR]	= 0x0010,
 	[TDFAR]	= 0x0014,
 	[TDFXR]	= 0x0018,
 	[TDFFR]	= 0x001c,
 	[RDLAR]	= 0x0030,
 	[RDFAR]	= 0x0034,
 	[RDFXR]	= 0x0038,
 	[RDFFR]	= 0x003c,
 	[TRSCER]	= 0x0438,
 	[RMFCR]	= 0x0440,
 	[TFTR]	= 0x0448,
 	[FDR]	= 0x0450,
 	[RMCR]	= 0x0458,
 	[RPADIR]	= 0x0460,
 	[FCFTR]	= 0x0468,
 	[CSMR] = 0x04E4,

 	[ECMR]	= 0x0500,
 	[ECSR]	= 0x0510,
 	[ECSIPR]	= 0x0518,
 	[PIR]	= 0x0520,
 	[PSR]	= 0x0528,
 	[PIPR]	= 0x052c,
 	[RFLR]	= 0x0508,
 	[APR]	= 0x0554,
 	[MPR]	= 0x0558,
 	[PFTCR]	= 0x055c,
 	[PFRCR]	= 0x0560,
 	[TPAUSER]	= 0x0564,
 	[GECMR]	= 0x05b0,
 	[BCULR]	= 0x05b4,
 	[MAHR]	= 0x05c0,
 	[MALR]	= 0x05c8,
 	[TROCR]	= 0x0700,
 	[CDCR]	= 0x0708,
 	[LCCR]	= 0x0710,
 	[CEFCR]	= 0x0740,
 	[FRECR]	= 0x0748,
 	[TSFRCR]	= 0x0750,
 	[TLFRCR]	= 0x0758,
 	[RFCR]	= 0x0760,
 	[CERCR]	= 0x0768,
 	[CEECR]	= 0x0770,
 	[MAFCR]	= 0x0778,
 	[RMII_MII] =  0x0790,
 };

 static const u16 sh_eth_offset_fast_sh4[SH_ETH_MAX_REGISTER_OFFSET] = {
 	[ECMR]	= 0x0100,
 	[RFLR]	= 0x0108,
 	[ECSR]	= 0x0110,
 	[ECSIPR]	= 0x0118,
 	[PIR]	= 0x0120,
 	[PSR]	= 0x0128,
 	[RDMLR]	= 0x0140,
 	[IPGR]	= 0x0150,
 	[APR]	= 0x0154,
 	[MPR]	= 0x0158,
 	[TPAUSER]	= 0x0164,
 	[RFCF]	= 0x0160,
 	[TPAUSECR]	= 0x0168,
 	[BCFRR]	= 0x016c,
 	[MAHR]	= 0x01c0,
 	[MALR]	= 0x01c8,
 	[TROCR]	= 0x01d0,
 	[CDCR]	= 0x01d4,
 	[LCCR]	= 0x01d8,
 	[CNDCR]	= 0x01dc,
 	[CEFCR]	= 0x01e4,
 	[FRECR]	= 0x01e8,
 	[TSFRCR]	= 0x01ec,
 	[TLFRCR]	= 0x01f0,
 	[RFCR]	= 0x01f4,
 	[MAFCR]	= 0x01f8,
 	[RTRATE]	= 0x01fc,

 	[EDMR]	= 0x0000,
 	[EDTRR]	= 0x0008,
 	[EDRRR]	= 0x0010,
 	[TDLAR]	= 0x0018,
 	[RDLAR]	= 0x0020,
 	[EESR]	= 0x0028,
 	[EESIPR]	= 0x0030,
 	[TRSCER]	= 0x0038,
 	[RMFCR]	= 0x0040,
 	[TFTR]	= 0x0048,
 	[FDR]	= 0x0050,
 	[RMCR]	= 0x0058,
 	[TFUCR]	= 0x0064,
 	[RFOCR]	= 0x0068,
 	[RMIIMR] = 0x006C,
 	[FCFTR]	= 0x0070,
 	[RPADIR]	= 0x0078,
 	[TRIMD]	= 0x007c,
 	[RBWAR]	= 0x00c8,
 	[RDFAR]	= 0x00cc,
 	[TBRAR]	= 0x00d4,
 	[TDFAR]	= 0x00d8,
 };

 /* Register Address */
 #if defined(CONFIG_CPU_SH7763) || defined(CONFIG_CPU_SH7734)
 #define SH_ETH_TYPE_GETHER
 #define BASE_IO_ADDR	0xfee00000
 #elif defined(CONFIG_CPU_SH7757) || \
 	defined(CONFIG_CPU_SH7752) || \
 	defined(CONFIG_CPU_SH7753)
 #if defined(CONFIG_SH_ETHER_USE_GETHER)
 #define SH_ETH_TYPE_GETHER
 #define BASE_IO_ADDR	0xfee00000
 #else
 #define SH_ETH_TYPE_ETHER
 #define BASE_IO_ADDR	0xfef00000
 #endif
 #elif defined(CONFIG_CPU_SH7724)
 #define SH_ETH_TYPE_ETHER
 #define BASE_IO_ADDR	0xA4600000
 #elif defined(CONFIG_R8A7740)
 #define SH_ETH_TYPE_GETHER
 #define BASE_IO_ADDR	0xE9A00000
 #elif defined(CONFIG_RCAR_GEN2)
 #define SH_ETH_TYPE_ETHER
 #define BASE_IO_ADDR	0xEE700200
 #elif defined(CONFIG_R7S72100)
 #define SH_ETH_TYPE_RZ
 #define BASE_IO_ADDR	0xE8203000
 #endif

 /*
  * Register's bits
  * Copy from Linux driver source code
  */
 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 /* EDSR */
 enum EDSR_BIT {
 	EDSR_ENT = 0x01, EDSR_ENR = 0x02,
 };
 #define EDSR_ENALL (EDSR_ENT|EDSR_ENR)
 #endif

 /* EDMR */
 enum DMAC_M_BIT {
 	EDMR_DL1 = 0x20, EDMR_DL0 = 0x10,
 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 	EDMR_SRST	= 0x03, /* Receive/Send reset */
 	EMDR_DESC_R	= 0x30, /* Descriptor reserve size */
 	EDMR_EL		= 0x40, /* Litte endian */
 #elif defined(SH_ETH_TYPE_ETHER)
 	EDMR_SRST	= 0x01,
 	EMDR_DESC_R	= 0x30, /* Descriptor reserve size */
 	EDMR_EL		= 0x40, /* Litte endian */
 #else
 	EDMR_SRST = 0x01,
 #endif
 };

 #if CONFIG_SH_ETHER_ALIGNE_SIZE == 64
 # define EMDR_DESC EDMR_DL1
 #elif CONFIG_SH_ETHER_ALIGNE_SIZE == 32
 # define EMDR_DESC EDMR_DL0
 #elif CONFIG_SH_ETHER_ALIGNE_SIZE == 16 /* Default */
 # define EMDR_DESC 0
 #endif

 /* RFLR */
 #define RFLR_RFL_MIN	0x05EE	/* Recv Frame length 1518 byte */

 /* EDTRR */
 enum DMAC_T_BIT {
 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 	EDTRR_TRNS = 0x03,
 #else
 	EDTRR_TRNS = 0x01,
 #endif
 };

 /* GECMR */
 enum GECMR_BIT {
 #if defined(CONFIG_CPU_SH7757) || \
 	defined(CONFIG_CPU_SH7752) || \
 	defined(CONFIG_CPU_SH7753)
 	GECMR_1000B = 0x20, GECMR_100B = 0x01, GECMR_10B = 0x00,
 #else
 	GECMR_1000B = 0x01, GECMR_100B = 0x04, GECMR_10B = 0x00,
 #endif
 };

 /* EDRRR*/
 enum EDRRR_R_BIT {
 	EDRRR_R = 0x01,
 };

 /* TPAUSER */
 enum TPAUSER_BIT {
 	TPAUSER_TPAUSE = 0x0000ffff,
 	TPAUSER_UNLIMITED = 0,
 };

 /* BCFR */
 enum BCFR_BIT {
 	BCFR_RPAUSE = 0x0000ffff,
 	BCFR_UNLIMITED = 0,
 };

 /* PIR */
 enum PIR_BIT {
 	PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
 };

 /* PSR */
 enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };

 /* EESR */
 enum EESR_BIT {
 #if defined(SH_ETH_TYPE_ETHER)
 	EESR_TWB  = 0x40000000,
 #else
 	EESR_TWB  = 0xC0000000,
 	EESR_TC1  = 0x20000000,
 	EESR_TUC  = 0x10000000,
 	EESR_ROC  = 0x80000000,
 #endif
 	EESR_TABT = 0x04000000,
 	EESR_RABT = 0x02000000, EESR_RFRMER = 0x01000000,
 #if defined(SH_ETH_TYPE_ETHER)
 	EESR_ADE  = 0x00800000,
 #endif
 	EESR_ECI  = 0x00400000,
 	EESR_FTC  = 0x00200000, EESR_TDE  = 0x00100000,
 	EESR_TFE  = 0x00080000, EESR_FRC  = 0x00040000,
 	EESR_RDE  = 0x00020000, EESR_RFE  = 0x00010000,
 #if defined(SH_ETH_TYPE_ETHER)
 	EESR_CND  = 0x00000800,
 #endif
 	EESR_DLC  = 0x00000400,
 	EESR_CD   = 0x00000200, EESR_RTO  = 0x00000100,
 	EESR_RMAF = 0x00000080, EESR_CEEF = 0x00000040,
 	EESR_CELF = 0x00000020, EESR_RRF  = 0x00000010,
 	EESR_RTLF = 0x00000008, EESR_RTSF = 0x00000004,
 	EESR_PRE  = 0x00000002, EESR_CERF = 0x00000001,
 };


 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 # define TX_CHECK (EESR_TC1 | EESR_FTC)
 # define EESR_ERR_CHECK	(EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE \
 		| EESR_RFRMER | EESR_TFE | EESR_TDE | EESR_ECI)
 # define TX_ERROR_CEHCK (EESR_TWB | EESR_TABT | EESR_TDE | EESR_TFE)

 #else
 # define TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | EESR_RTO)
 # define EESR_ERR_CHECK	(EESR_TWB | EESR_TABT | EESR_RABT | EESR_RDE \
 		| EESR_RFRMER | EESR_ADE | EESR_TFE | EESR_TDE | EESR_ECI)
 # define TX_ERROR_CEHCK (EESR_TWB | EESR_TABT | EESR_ADE | EESR_TDE | EESR_TFE)
 #endif

 /* EESIPR */
 enum DMAC_IM_BIT {
 	DMAC_M_TWB = 0x40000000, DMAC_M_TABT = 0x04000000,
 	DMAC_M_RABT = 0x02000000,
 	DMAC_M_RFRMER = 0x01000000, DMAC_M_ADF = 0x00800000,
 	DMAC_M_ECI = 0x00400000, DMAC_M_FTC = 0x00200000,
 	DMAC_M_TDE = 0x00100000, DMAC_M_TFE = 0x00080000,
 	DMAC_M_FRC = 0x00040000, DMAC_M_RDE = 0x00020000,
 	DMAC_M_RFE = 0x00010000, DMAC_M_TINT4 = 0x00000800,
 	DMAC_M_TINT3 = 0x00000400, DMAC_M_TINT2 = 0x00000200,
 	DMAC_M_TINT1 = 0x00000100, DMAC_M_RINT8 = 0x00000080,
 	DMAC_M_RINT5 = 0x00000010, DMAC_M_RINT4 = 0x00000008,
 	DMAC_M_RINT3 = 0x00000004, DMAC_M_RINT2 = 0x00000002,
 	DMAC_M_RINT1 = 0x00000001,
 };

 /* Receive descriptor bit */
 enum RD_STS_BIT {
 	RD_RACT = 0x80000000, RD_RDLE = 0x40000000,
 	RD_RFP1 = 0x20000000, RD_RFP0 = 0x10000000,
 	RD_RFE = 0x08000000, RD_RFS10 = 0x00000200,
 	RD_RFS9 = 0x00000100, RD_RFS8 = 0x00000080,
 	RD_RFS7 = 0x00000040, RD_RFS6 = 0x00000020,
 	RD_RFS5 = 0x00000010, RD_RFS4 = 0x00000008,
 	RD_RFS3 = 0x00000004, RD_RFS2 = 0x00000002,
 	RD_RFS1 = 0x00000001,
 };
 #define RDF1ST	RD_RFP1
 #define RDFEND	RD_RFP0
 #define RD_RFP	(RD_RFP1|RD_RFP0)

 /* RDFFR*/
 enum RDFFR_BIT {
 	RDFFR_RDLF = 0x01,
 };

 /* FCFTR */
 enum FCFTR_BIT {
 	FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
 	FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
 	FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
 };
 #define FIFO_F_D_RFF	(FCFTR_RFF2|FCFTR_RFF1|FCFTR_RFF0)
 #define FIFO_F_D_RFD	(FCFTR_RFD2|FCFTR_RFD1|FCFTR_RFD0)

 /* Transfer descriptor bit */
 enum TD_STS_BIT {
 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_ETHER) || \
 	defined(SH_ETH_TYPE_RZ)
 	TD_TACT = 0x80000000,
 #else
 	TD_TACT = 0x7fffffff,
 #endif
 	TD_TDLE = 0x40000000, TD_TFP1 = 0x20000000,
 	TD_TFP0 = 0x10000000,
 };
 #define TDF1ST	TD_TFP1
 #define TDFEND	TD_TFP0
 #define TD_TFP	(TD_TFP1|TD_TFP0)

 /* RMCR */
 enum RECV_RST_BIT { RMCR_RST = 0x01, };
 /* ECMR */
 enum FELIC_MODE_BIT {
 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 	ECMR_TRCCM = 0x04000000, ECMR_RCSC = 0x00800000,
 	ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000,
 #endif
 	ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
 	ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
 	ECMR_PMDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
 	ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004, ECMR_DM = 0x00000002,
 	ECMR_PRM = 0x00000001,
 #ifdef CONFIG_CPU_SH7724
 	ECMR_RTM = 0x00000010,
 #elif defined(CONFIG_RCAR_GEN2)
 	ECMR_RTM = 0x00000004,
 #endif

 };

 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 #define ECMR_CHG_DM (ECMR_TRCCM | ECMR_RZPF | ECMR_ZPF | ECMR_PFR | \
 			ECMR_RXF | ECMR_TXF | ECMR_MCT)
 #elif defined(SH_ETH_TYPE_ETHER)
 #define ECMR_CHG_DM (ECMR_ZPF | ECMR_PFR | ECMR_RXF | ECMR_TXF)
 #else
 #define ECMR_CHG_DM	(ECMR_ZPF | ECMR_PFR | ECMR_RXF | ECMR_TXF | ECMR_MCT)
 #endif

 /* ECSR */
 enum ECSR_STATUS_BIT {
 #if defined(SH_ETH_TYPE_ETHER)
 	ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10,
 #endif
 	ECSR_LCHNG = 0x04,
 	ECSR_MPD = 0x02, ECSR_ICD = 0x01,
 };

 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 # define ECSR_INIT (ECSR_ICD | ECSIPR_MPDIP)
 #else
 # define ECSR_INIT (ECSR_BRCRX | ECSR_PSRTO | \
 			ECSR_LCHNG | ECSR_ICD | ECSIPR_MPDIP)
 #endif

 /* ECSIPR */
 enum ECSIPR_STATUS_MASK_BIT {
 #if defined(SH_ETH_TYPE_ETHER)
 	ECSIPR_BRCRXIP = 0x20,
 	ECSIPR_PSRTOIP = 0x10,
 #elif defined(SH_ETY_TYPE_GETHER)
 	ECSIPR_PSRTOIP = 0x10,
 	ECSIPR_PHYIP = 0x08,
 #endif
 	ECSIPR_LCHNGIP = 0x04,
 	ECSIPR_MPDIP = 0x02,
 	ECSIPR_ICDIP = 0x01,
 };

 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 # define ECSIPR_INIT (ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP)
 #else
 # define ECSIPR_INIT (ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | ECSIPR_LCHNGIP | \
 				ECSIPR_ICDIP | ECSIPR_MPDIP)
 #endif

 /* APR */
 enum APR_BIT {
 	APR_AP = 0x00000004,
 };

 /* MPR */
 enum MPR_BIT {
 	MPR_MP = 0x00000006,
 };

 /* TRSCER */
 enum DESC_I_BIT {
 	DESC_I_TINT4 = 0x0800, DESC_I_TINT3 = 0x0400, DESC_I_TINT2 = 0x0200,
 	DESC_I_TINT1 = 0x0100, DESC_I_RINT8 = 0x0080, DESC_I_RINT5 = 0x0010,
 	DESC_I_RINT4 = 0x0008, DESC_I_RINT3 = 0x0004, DESC_I_RINT2 = 0x0002,
 	DESC_I_RINT1 = 0x0001,
 };

 /* RPADIR */
 enum RPADIR_BIT {
 	RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
 	RPADIR_PADR = 0x0003f,
 };

 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 # define RPADIR_INIT (0x00)
 #else
 # define RPADIR_INIT (RPADIR_PADS1)
 #endif

 /* FDR */
 enum FIFO_SIZE_BIT {
 	FIFO_SIZE_T = 0x00000700, FIFO_SIZE_R = 0x00000007,
 };

 static inline unsigned long sh_eth_reg_addr(struct sh_eth_info *port,
 					    int enum_index)
 {
 #if defined(SH_ETH_TYPE_GETHER) || defined(SH_ETH_TYPE_RZ)
 	const u16 *reg_offset = sh_eth_offset_gigabit;
 #elif defined(SH_ETH_TYPE_ETHER)
 	const u16 *reg_offset = sh_eth_offset_fast_sh4;
 #else
 #error
 #endif
 	return (unsigned long)port->iobase + reg_offset[enum_index];
 }

 static inline void sh_eth_write(struct sh_eth_info *port, unsigned long data,
 				int enum_index)
 {
 	outl(data, sh_eth_reg_addr(port, enum_index));
 }

 static inline unsigned long sh_eth_read(struct sh_eth_info *port,
 					int enum_index)
 {
 	return inl(sh_eth_reg_addr(port, enum_index));
 }
	/* SPDX-License-Identifier: GPL-2.0+ */
	/*
	* sh_eth.h - Driver for Renesas SuperH ethernet controller.
	*
	* Copyright (C) 2008 - 2012 Renesas Solutions Corp.
	* Copyright (c) 2008 - 2012 Nobuhiro Iwamatsu
	* Copyright (c) 2007 Carlos Munoz <carlos@kenati.com>
	*/

	#include <netdev.h>
	#include <asm/types.h>

	#define SHETHER_NAME "sh_eth"

	#if defined(CONFIG_SH)
	/* Malloc returns addresses in the P1 area (cacheable). However we need to
	use area P2 (non-cacheable) */
	#define ADDR_TO_P2(addr) ((((int)(addr) & ~0xe0000000) \| 0xa0000000))

	/* The ethernet controller needs to use physical addresses */
	#if defined(CONFIG_SH_32BIT)
	#define ADDR_TO_PHY(addr) ((((int)(addr) & ~0xe0000000) \| 0x40000000))
	#else
	#define ADDR_TO_PHY(addr) ((int)(addr) & ~0xe0000000)
	#endif
	#elif defined(CONFIG_ARM)
	#ifndef inl
	#define inl readl
	#define outl writel
	#endif
	#define ADDR_TO_PHY(addr) ((int)(addr))
	#define ADDR_TO_P2(addr) (addr)
	#endif /* defined(CONFIG_SH) */

	/* base padding size is 16 */
	#ifndef CONFIG_SH_ETHER_ALIGNE_SIZE
	#define CONFIG_SH_ETHER_ALIGNE_SIZE 16
	#endif

	/* Number of supported ports */
	#define MAX_PORT_NUM 2

	/* Buffers must be big enough to hold the largest ethernet frame. Also, rx
	buffers must be a multiple of 32 bytes */
	#define MAX_BUF_SIZE (48 * 32)

	/* The number of tx descriptors must be large enough to point to 5 or more
	frames. If each frame uses 2 descriptors, at least 10 descriptors are needed.
	We use one descriptor per frame */
	#define NUM_TX_DESC 8

	/* The size of the tx descriptor is determined by how much padding is used.
	4, 20, or 52 bytes of padding can be used */
	#define TX_DESC_PADDING (CONFIG_SH_ETHER_ALIGNE_SIZE - 12)

	/* Tx descriptor. We always use 3 bytes of padding */
	struct tx_desc_s {
	volatile u32 td0;
	u32 td1;
	u32 td2; /* Buffer start */
	u8 padding[TX_DESC_PADDING]; /* aligned cache line size */
	};

	/* There is no limitation in the number of rx descriptors */
	#define NUM_RX_DESC 8

	/* The size of the rx descriptor is determined by how much padding is used.
	4, 20, or 52 bytes of padding can be used */
	#define RX_DESC_PADDING (CONFIG_SH_ETHER_ALIGNE_SIZE - 12)
	/* aligned cache line size */
	#define RX_BUF_ALIGNE_SIZE (CONFIG_SH_ETHER_ALIGNE_SIZE > 32 ? 64 : 32)

	/* Rx descriptor. We always use 4 bytes of padding */
	struct rx_desc_s {
	volatile u32 rd0;
	volatile u32 rd1;
	u32 rd2; /* Buffer start */
	u8 padding[TX_DESC_PADDING]; /* aligned cache line size */
	};

	struct sh_eth_info {
	struct tx_desc_s *tx_desc_alloc;
	struct tx_desc_s *tx_desc_base;
	struct tx_desc_s *tx_desc_cur;
	struct rx_desc_s *rx_desc_alloc;
	struct rx_desc_s *rx_desc_base;
	struct rx_desc_s *rx_desc_cur;
	u8 *rx_buf_alloc;
	u8 *rx_buf_base;
	u8 mac_addr[6];
	u8 phy_addr;
	struct eth_device *dev;
	struct phy_device *phydev;
	void __iomem *iobase;
	};

	struct sh_eth_dev {
	int port;
	struct sh_eth_info port_info[MAX_PORT_NUM];
	};

	/* from linux/drivers/net/ethernet/renesas/sh_eth.h */
	enum {
	/* E-DMAC registers */
	EDSR = 0,
	EDMR,
	EDTRR,
	EDRRR,
	EESR,
	EESIPR,
	TDLAR,
	TDFAR,
	TDFXR,
	TDFFR,
	RDLAR,
	RDFAR,
	RDFXR,
	RDFFR,
	TRSCER,
	RMFCR,
	TFTR,
	FDR,
	RMCR,
	EDOCR,
	TFUCR,
	RFOCR,
	FCFTR,
	RPADIR,
	TRIMD,
	RBWAR,
	TBRAR,

	/* Ether registers */
	ECMR,
	ECSR,
	ECSIPR,
	PIR,
	PSR,
	RDMLR,
	PIPR,
	RFLR,
	IPGR,
	APR,
	MPR,
	PFTCR,
	PFRCR,
	RFCR,
	RFCF,
	TPAUSER,
	TPAUSECR,
	BCFR,
	BCFRR,
	GECMR,
	BCULR,
	MAHR,
	MALR,
	TROCR,
	CDCR,
	LCCR,
	CNDCR,
	CEFCR,
	FRECR,
	TSFRCR,
	TLFRCR,
	CERCR,
	CEECR,
	RMIIMR, /* R8A7790 */
	MAFCR,
	RTRATE,
	CSMR,
	RMII_MII,

	/* This value must be written at last. */
	SH_ETH_MAX_REGISTER_OFFSET,
	};

	static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
	[EDSR] = 0x0000,
	[EDMR] = 0x0400,
	[EDTRR] = 0x0408,
	[EDRRR] = 0x0410,
	[EESR] = 0x0428,
	[EESIPR] = 0x0430,
	[TDLAR] = 0x0010,
	[TDFAR] = 0x0014,
	[TDFXR] = 0x0018,
	[TDFFR] = 0x001c,
	[RDLAR] = 0x0030,
	[RDFAR] = 0x0034,
	[RDFXR] = 0x0038,
	[RDFFR] = 0x003c,
	[TRSCER] = 0x0438,
	[RMFCR] = 0x0440,
	[TFTR] = 0x0448,
	[FDR] = 0x0450,
	[RMCR] = 0x0458,
	[RPADIR] = 0x0460,
	[FCFTR] = 0x0468,
	[CSMR] = 0x04E4,

	[ECMR] = 0x0500,
	[ECSR] = 0x0510,
	[ECSIPR] = 0x0518,
	[PIR] = 0x0520,
	[PSR] = 0x0528,
	[PIPR] = 0x052c,
	[RFLR] = 0x0508,
	[APR] = 0x0554,
	[MPR] = 0x0558,
	[PFTCR] = 0x055c,
	[PFRCR] = 0x0560,
	[TPAUSER] = 0x0564,
	[GECMR] = 0x05b0,
	[BCULR] = 0x05b4,
	[MAHR] = 0x05c0,
	[MALR] = 0x05c8,
	[TROCR] = 0x0700,
	[CDCR] = 0x0708,
	[LCCR] = 0x0710,
	[CEFCR] = 0x0740,
	[FRECR] = 0x0748,
	[TSFRCR] = 0x0750,
	[TLFRCR] = 0x0758,
	[RFCR] = 0x0760,
	[CERCR] = 0x0768,
	[CEECR] = 0x0770,
	[MAFCR] = 0x0778,
	[RMII_MII] = 0x0790,
	};

	static const u16 sh_eth_offset_fast_sh4[SH_ETH_MAX_REGISTER_OFFSET] = {
	[ECMR] = 0x0100,
	[RFLR] = 0x0108,
	[ECSR] = 0x0110,
	[ECSIPR] = 0x0118,
	[PIR] = 0x0120,
	[PSR] = 0x0128,
	[RDMLR] = 0x0140,
	[IPGR] = 0x0150,
	[APR] = 0x0154,
	[MPR] = 0x0158,
	[TPAUSER] = 0x0164,
	[RFCF] = 0x0160,
	[TPAUSECR] = 0x0168,
	[BCFRR] = 0x016c,
	[MAHR] = 0x01c0,
	[MALR] = 0x01c8,
	[TROCR] = 0x01d0,
	[CDCR] = 0x01d4,
	[LCCR] = 0x01d8,
	[CNDCR] = 0x01dc,
	[CEFCR] = 0x01e4,
	[FRECR] = 0x01e8,
	[TSFRCR] = 0x01ec,
	[TLFRCR] = 0x01f0,
	[RFCR] = 0x01f4,
	[MAFCR] = 0x01f8,
	[RTRATE] = 0x01fc,

	[EDMR] = 0x0000,
	[EDTRR] = 0x0008,
	[EDRRR] = 0x0010,
	[TDLAR] = 0x0018,
	[RDLAR] = 0x0020,
	[EESR] = 0x0028,
	[EESIPR] = 0x0030,
	[TRSCER] = 0x0038,
	[RMFCR] = 0x0040,
	[TFTR] = 0x0048,
	[FDR] = 0x0050,
	[RMCR] = 0x0058,
	[TFUCR] = 0x0064,
	[RFOCR] = 0x0068,
	[RMIIMR] = 0x006C,
	[FCFTR] = 0x0070,
	[RPADIR] = 0x0078,
	[TRIMD] = 0x007c,
	[RBWAR] = 0x00c8,
	[RDFAR] = 0x00cc,
	[TBRAR] = 0x00d4,
	[TDFAR] = 0x00d8,
	};

	/* Register Address */
	#if defined(CONFIG_CPU_SH7763) \|\| defined(CONFIG_CPU_SH7734)
	#define SH_ETH_TYPE_GETHER
	#define BASE_IO_ADDR 0xfee00000
	#elif defined(CONFIG_CPU_SH7757) \|\| \
	defined(CONFIG_CPU_SH7752) \|\| \
	defined(CONFIG_CPU_SH7753)
	#if defined(CONFIG_SH_ETHER_USE_GETHER)
	#define SH_ETH_TYPE_GETHER
	#define BASE_IO_ADDR 0xfee00000
	#else
	#define SH_ETH_TYPE_ETHER
	#define BASE_IO_ADDR 0xfef00000
	#endif
	#elif defined(CONFIG_CPU_SH7724)
	#define SH_ETH_TYPE_ETHER
	#define BASE_IO_ADDR 0xA4600000
	#elif defined(CONFIG_R8A7740)
	#define SH_ETH_TYPE_GETHER
	#define BASE_IO_ADDR 0xE9A00000
	#elif defined(CONFIG_RCAR_GEN2)
	#define SH_ETH_TYPE_ETHER
	#define BASE_IO_ADDR 0xEE700200
	#elif defined(CONFIG_R7S72100)
	#define SH_ETH_TYPE_RZ
	#define BASE_IO_ADDR 0xE8203000
	#endif

	/*
	* Register's bits
	* Copy from Linux driver source code
	*/
	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	/* EDSR */
	enum EDSR_BIT {
	EDSR_ENT = 0x01, EDSR_ENR = 0x02,
	};
	#define EDSR_ENALL (EDSR_ENT\|EDSR_ENR)
	#endif

	/* EDMR */
	enum DMAC_M_BIT {
	EDMR_DL1 = 0x20, EDMR_DL0 = 0x10,
	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	EDMR_SRST = 0x03, /* Receive/Send reset */
	EMDR_DESC_R = 0x30, /* Descriptor reserve size */
	EDMR_EL = 0x40, /* Litte endian */
	#elif defined(SH_ETH_TYPE_ETHER)
	EDMR_SRST = 0x01,
	EMDR_DESC_R = 0x30, /* Descriptor reserve size */
	EDMR_EL = 0x40, /* Litte endian */
	#else
	EDMR_SRST = 0x01,
	#endif
	};

	#if CONFIG_SH_ETHER_ALIGNE_SIZE == 64
	# define EMDR_DESC EDMR_DL1
	#elif CONFIG_SH_ETHER_ALIGNE_SIZE == 32
	# define EMDR_DESC EDMR_DL0
	#elif CONFIG_SH_ETHER_ALIGNE_SIZE == 16 /* Default */
	# define EMDR_DESC 0
	#endif

	/* RFLR */
	#define RFLR_RFL_MIN 0x05EE /* Recv Frame length 1518 byte */

	/* EDTRR */
	enum DMAC_T_BIT {
	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	EDTRR_TRNS = 0x03,
	#else
	EDTRR_TRNS = 0x01,
	#endif
	};

	/* GECMR */
	enum GECMR_BIT {
	#if defined(CONFIG_CPU_SH7757) \|\| \
	defined(CONFIG_CPU_SH7752) \|\| \
	defined(CONFIG_CPU_SH7753)
	GECMR_1000B = 0x20, GECMR_100B = 0x01, GECMR_10B = 0x00,
	#else
	GECMR_1000B = 0x01, GECMR_100B = 0x04, GECMR_10B = 0x00,
	#endif
	};

	/* EDRRR*/
	enum EDRRR_R_BIT {
	EDRRR_R = 0x01,
	};

	/* TPAUSER */
	enum TPAUSER_BIT {
	TPAUSER_TPAUSE = 0x0000ffff,
	TPAUSER_UNLIMITED = 0,
	};

	/* BCFR */
	enum BCFR_BIT {
	BCFR_RPAUSE = 0x0000ffff,
	BCFR_UNLIMITED = 0,
	};

	/* PIR */
	enum PIR_BIT {
	PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
	};

	/* PSR */
	enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };

	/* EESR */
	enum EESR_BIT {
	#if defined(SH_ETH_TYPE_ETHER)
	EESR_TWB = 0x40000000,
	#else
	EESR_TWB = 0xC0000000,
	EESR_TC1 = 0x20000000,
	EESR_TUC = 0x10000000,
	EESR_ROC = 0x80000000,
	#endif
	EESR_TABT = 0x04000000,
	EESR_RABT = 0x02000000, EESR_RFRMER = 0x01000000,
	#if defined(SH_ETH_TYPE_ETHER)
	EESR_ADE = 0x00800000,
	#endif
	EESR_ECI = 0x00400000,
	EESR_FTC = 0x00200000, EESR_TDE = 0x00100000,
	EESR_TFE = 0x00080000, EESR_FRC = 0x00040000,
	EESR_RDE = 0x00020000, EESR_RFE = 0x00010000,
	#if defined(SH_ETH_TYPE_ETHER)
	EESR_CND = 0x00000800,
	#endif
	EESR_DLC = 0x00000400,
	EESR_CD = 0x00000200, EESR_RTO = 0x00000100,
	EESR_RMAF = 0x00000080, EESR_CEEF = 0x00000040,
	EESR_CELF = 0x00000020, EESR_RRF = 0x00000010,
	EESR_RTLF = 0x00000008, EESR_RTSF = 0x00000004,
	EESR_PRE = 0x00000002, EESR_CERF = 0x00000001,
	};


	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	# define TX_CHECK (EESR_TC1 \| EESR_FTC)
	# define EESR_ERR_CHECK (EESR_TWB \| EESR_TABT \| EESR_RABT \| EESR_RDE \
	\| EESR_RFRMER \| EESR_TFE \| EESR_TDE \| EESR_ECI)
	# define TX_ERROR_CEHCK (EESR_TWB \| EESR_TABT \| EESR_TDE \| EESR_TFE)

	#else
	# define TX_CHECK (EESR_FTC \| EESR_CND \| EESR_DLC \| EESR_CD \| EESR_RTO)
	# define EESR_ERR_CHECK (EESR_TWB \| EESR_TABT \| EESR_RABT \| EESR_RDE \
	\| EESR_RFRMER \| EESR_ADE \| EESR_TFE \| EESR_TDE \| EESR_ECI)
	# define TX_ERROR_CEHCK (EESR_TWB \| EESR_TABT \| EESR_ADE \| EESR_TDE \| EESR_TFE)
	#endif

	/* EESIPR */
	enum DMAC_IM_BIT {
	DMAC_M_TWB = 0x40000000, DMAC_M_TABT = 0x04000000,
	DMAC_M_RABT = 0x02000000,
	DMAC_M_RFRMER = 0x01000000, DMAC_M_ADF = 0x00800000,
	DMAC_M_ECI = 0x00400000, DMAC_M_FTC = 0x00200000,
	DMAC_M_TDE = 0x00100000, DMAC_M_TFE = 0x00080000,
	DMAC_M_FRC = 0x00040000, DMAC_M_RDE = 0x00020000,
	DMAC_M_RFE = 0x00010000, DMAC_M_TINT4 = 0x00000800,
	DMAC_M_TINT3 = 0x00000400, DMAC_M_TINT2 = 0x00000200,
	DMAC_M_TINT1 = 0x00000100, DMAC_M_RINT8 = 0x00000080,
	DMAC_M_RINT5 = 0x00000010, DMAC_M_RINT4 = 0x00000008,
	DMAC_M_RINT3 = 0x00000004, DMAC_M_RINT2 = 0x00000002,
	DMAC_M_RINT1 = 0x00000001,
	};

	/* Receive descriptor bit */
	enum RD_STS_BIT {
	RD_RACT = 0x80000000, RD_RDLE = 0x40000000,
	RD_RFP1 = 0x20000000, RD_RFP0 = 0x10000000,
	RD_RFE = 0x08000000, RD_RFS10 = 0x00000200,
	RD_RFS9 = 0x00000100, RD_RFS8 = 0x00000080,
	RD_RFS7 = 0x00000040, RD_RFS6 = 0x00000020,
	RD_RFS5 = 0x00000010, RD_RFS4 = 0x00000008,
	RD_RFS3 = 0x00000004, RD_RFS2 = 0x00000002,
	RD_RFS1 = 0x00000001,
	};
	#define RDF1ST RD_RFP1
	#define RDFEND RD_RFP0
	#define RD_RFP (RD_RFP1\|RD_RFP0)

	/* RDFFR*/
	enum RDFFR_BIT {
	RDFFR_RDLF = 0x01,
	};

	/* FCFTR */
	enum FCFTR_BIT {
	FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
	FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
	FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
	};
	#define FIFO_F_D_RFF (FCFTR_RFF2\|FCFTR_RFF1\|FCFTR_RFF0)
	#define FIFO_F_D_RFD (FCFTR_RFD2\|FCFTR_RFD1\|FCFTR_RFD0)

	/* Transfer descriptor bit */
	enum TD_STS_BIT {
	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_ETHER) \|\| \
	defined(SH_ETH_TYPE_RZ)
	TD_TACT = 0x80000000,
	#else
	TD_TACT = 0x7fffffff,
	#endif
	TD_TDLE = 0x40000000, TD_TFP1 = 0x20000000,
	TD_TFP0 = 0x10000000,
	};
	#define TDF1ST TD_TFP1
	#define TDFEND TD_TFP0
	#define TD_TFP (TD_TFP1\|TD_TFP0)

	/* RMCR */
	enum RECV_RST_BIT { RMCR_RST = 0x01, };
	/* ECMR */
	enum FELIC_MODE_BIT {
	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	ECMR_TRCCM = 0x04000000, ECMR_RCSC = 0x00800000,
	ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000,
	#endif
	ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
	ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
	ECMR_PMDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
	ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004, ECMR_DM = 0x00000002,
	ECMR_PRM = 0x00000001,
	#ifdef CONFIG_CPU_SH7724
	ECMR_RTM = 0x00000010,
	#elif defined(CONFIG_RCAR_GEN2)
	ECMR_RTM = 0x00000004,
	#endif

	};

	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	#define ECMR_CHG_DM (ECMR_TRCCM \| ECMR_RZPF \| ECMR_ZPF \| ECMR_PFR \| \
	ECMR_RXF \| ECMR_TXF \| ECMR_MCT)
	#elif defined(SH_ETH_TYPE_ETHER)
	#define ECMR_CHG_DM (ECMR_ZPF \| ECMR_PFR \| ECMR_RXF \| ECMR_TXF)
	#else
	#define ECMR_CHG_DM (ECMR_ZPF \| ECMR_PFR \| ECMR_RXF \| ECMR_TXF \| ECMR_MCT)
	#endif

	/* ECSR */
	enum ECSR_STATUS_BIT {
	#if defined(SH_ETH_TYPE_ETHER)
	ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10,
	#endif
	ECSR_LCHNG = 0x04,
	ECSR_MPD = 0x02, ECSR_ICD = 0x01,
	};

	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	# define ECSR_INIT (ECSR_ICD \| ECSIPR_MPDIP)
	#else
	# define ECSR_INIT (ECSR_BRCRX \| ECSR_PSRTO \| \
	ECSR_LCHNG \| ECSR_ICD \| ECSIPR_MPDIP)
	#endif

	/* ECSIPR */
	enum ECSIPR_STATUS_MASK_BIT {
	#if defined(SH_ETH_TYPE_ETHER)
	ECSIPR_BRCRXIP = 0x20,
	ECSIPR_PSRTOIP = 0x10,
	#elif defined(SH_ETY_TYPE_GETHER)
	ECSIPR_PSRTOIP = 0x10,
	ECSIPR_PHYIP = 0x08,
	#endif
	ECSIPR_LCHNGIP = 0x04,
	ECSIPR_MPDIP = 0x02,
	ECSIPR_ICDIP = 0x01,
	};

	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	# define ECSIPR_INIT (ECSIPR_LCHNGIP \| ECSIPR_ICDIP \| ECSIPR_MPDIP)
	#else
	# define ECSIPR_INIT (ECSIPR_BRCRXIP \| ECSIPR_PSRTOIP \| ECSIPR_LCHNGIP \| \
	ECSIPR_ICDIP \| ECSIPR_MPDIP)
	#endif

	/* APR */
	enum APR_BIT {
	APR_AP = 0x00000004,
	};

	/* MPR */
	enum MPR_BIT {
	MPR_MP = 0x00000006,
	};

	/* TRSCER */
	enum DESC_I_BIT {
	DESC_I_TINT4 = 0x0800, DESC_I_TINT3 = 0x0400, DESC_I_TINT2 = 0x0200,
	DESC_I_TINT1 = 0x0100, DESC_I_RINT8 = 0x0080, DESC_I_RINT5 = 0x0010,
	DESC_I_RINT4 = 0x0008, DESC_I_RINT3 = 0x0004, DESC_I_RINT2 = 0x0002,
	DESC_I_RINT1 = 0x0001,
	};

	/* RPADIR */
	enum RPADIR_BIT {
	RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
	RPADIR_PADR = 0x0003f,
	};

	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	# define RPADIR_INIT (0x00)
	#else
	# define RPADIR_INIT (RPADIR_PADS1)
	#endif

	/* FDR */
	enum FIFO_SIZE_BIT {
	FIFO_SIZE_T = 0x00000700, FIFO_SIZE_R = 0x00000007,
	};

	static inline unsigned long sh_eth_reg_addr(struct sh_eth_info *port,
	int enum_index)
	{
	#if defined(SH_ETH_TYPE_GETHER) \|\| defined(SH_ETH_TYPE_RZ)
	const u16 *reg_offset = sh_eth_offset_gigabit;
	#elif defined(SH_ETH_TYPE_ETHER)
	const u16 *reg_offset = sh_eth_offset_fast_sh4;
	#else
	#error
	#endif
	return (unsigned long)port->iobase + reg_offset[enum_index];
	}

	static inline void sh_eth_write(struct sh_eth_info *port, unsigned long data,
	int enum_index)
	{
	outl(data, sh_eth_reg_addr(port, enum_index));
	}

	static inline unsigned long sh_eth_read(struct sh_eth_info *port,
	int enum_index)
	{
	return inl(sh_eth_reg_addr(port, enum_index));
	}