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u-boot/drivers/net/sh_eth.h
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

625 lines
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/* 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));
}
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