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bootloader/u-boot_2015_04/drivers/net/lan91c96.h 22.5 KB
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  /*------------------------------------------------------------------------
   * lan91c96.h
   *
   * (C) Copyright 2002
   * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   * Rolf Offermanns <rof@sysgo.de>
   * Copyright (C) 2001 Standard Microsystems Corporation (SMSC)
   *       Developed by Simple Network Magic Corporation (SNMC)
   * Copyright (C) 1996 by Erik Stahlman (ES)
   *
   * SPDX-License-Identifier:	GPL-2.0+
   *
   * This file contains register information and access macros for
   * the LAN91C96 single chip ethernet controller.  It is a modified
   * version of the smc9111.h file.
   *
   * Information contained in this file was obtained from the LAN91C96
   * manual from SMC. To get a copy, if you really want one, you can find
   * information under www.smsc.com.
   *
   * Authors
   *	Erik Stahlman				( erik@vt.edu )
   *	Daris A Nevil				( dnevil@snmc.com )
   *
   * History
   * 04/30/03	Mathijs Haarman		Modified smc91111.h (u-boot version)
   *		                        for lan91c96
   *-------------------------------------------------------------------------
   */
  #ifndef _LAN91C96_H_
  #define _LAN91C96_H_
  
  #include <asm/types.h>
  #include <asm/io.h>
  #include <config.h>
  
  /* I want some simple types */
  
  typedef unsigned char			byte;
  typedef unsigned short			word;
  typedef unsigned long int		dword;
  
  /*
   * DEBUGGING LEVELS
   *
   * 0 for normal operation
   * 1 for slightly more details
   * >2 for various levels of increasingly useless information
   *    2 for interrupt tracking, status flags
   *    3 for packet info
   *    4 for complete packet dumps
   */
  /*#define SMC_DEBUG 0 */
  
  /* Because of bank switching, the LAN91xxx uses only 16 I/O ports */
  
  #define	SMC_IO_EXTENT	16
  
  #ifdef CONFIG_CPU_PXA25X
  
  #define	SMC_IO_SHIFT	0
  
  #define	SMCREG(edev, r)	((edev)->iobase+((r)<<SMC_IO_SHIFT))
  
  #define	SMC_inl(edev, r)	(*((volatile dword *)SMCREG(edev, r)))
  #define	SMC_inw(edev, r)	(*((volatile word *)SMCREG(edev, r)))
  #define SMC_inb(edev, p) ({ \
  	unsigned int __p = p; \
  	unsigned int __v = SMC_inw(edev, __p & ~1); \
  	if (__p & 1) __v >>= 8; \
  	else __v &= 0xff; \
  	__v; })
  
  #define	SMC_outl(edev, d, r)	(*((volatile dword *)SMCREG(edev, r)) = d)
  #define	SMC_outw(edev, d, r)	(*((volatile word *)SMCREG(edev, r)) = d)
  #define	SMC_outb(edev, d, r)	({	word __d = (byte)(d);  \
  				word __w = SMC_inw(edev, (r)&~1);  \
  				__w &= ((r)&1) ? 0x00FF : 0xFF00;  \
  				__w |= ((r)&1) ? __d<<8 : __d;  \
  				SMC_outw(edev, __w, (r)&~1);  \
  			})
  
  #define SMC_outsl(edev, r, b, l)	({	int __i; \
  					dword *__b2; \
  					__b2 = (dword *) b; \
  					for (__i = 0; __i < l; __i++) { \
  						SMC_outl(edev, *(__b2 + __i),\
  							r); \
  					} \
  				})
  
  #define SMC_outsw(edev, r, b, l)	({	int __i; \
  					word *__b2; \
  					__b2 = (word *) b; \
  					for (__i = 0; __i < l; __i++) { \
  						SMC_outw(edev, *(__b2 + __i),\
  							r); \
  					} \
  				})
  
  #define SMC_insl(edev, r, b, l)		({	int __i ;  \
  					dword *__b2;  \
  					__b2 = (dword *) b;  \
  					for (__i = 0; __i < l; __i++) {  \
  						*(__b2 + __i) = SMC_inl(edev,\
  							r);  \
  						SMC_inl(edev, 0);  \
  					};  \
  				})
  
  #define SMC_insw(edev, r, b, l)		({	int __i ;  \
  					word *__b2;  \
  					__b2 = (word *) b;  \
  					for (__i = 0; __i < l; __i++) {  \
  						*(__b2 + __i) = SMC_inw(edev,\
  							r);  \
  						SMC_inw(edev, 0);  \
  					};  \
  				})
  
  #define SMC_insb(edev, r, b, l)		({	int __i ;  \
  					byte *__b2;  \
  					__b2 = (byte *) b;  \
  					for (__i = 0; __i < l; __i++) {  \
  						*(__b2 + __i) = SMC_inb(edev,\
  							r);  \
  						SMC_inb(edev, 0);  \
  					};  \
  				})
  
  #else /* if not CONFIG_CPU_PXA25X */
  
  /*
   * We have only 16 Bit PCMCIA access on Socket 0
   */
  
  #define	SMC_inw(edev, r)	(*((volatile word *)((edev)->iobase+(r))))
  #define  SMC_inb(edev, r)	(((r)&1) ? SMC_inw(edev, (r)&~1)>>8 :\
  					SMC_inw(edev, r)&0xFF)
  
  #define	SMC_outw(edev, d, r)	(*((volatile word *)((edev)->iobase+(r))) = d)
  #define	SMC_outb(edev, d, r)	({	word __d = (byte)(d);  \
  				word __w = SMC_inw(edev, (r)&~1);  \
  				__w &= ((r)&1) ? 0x00FF : 0xFF00;  \
  				__w |= ((r)&1) ? __d<<8 : __d;  \
  				SMC_outw(edev, __w, (r)&~1);  \
  			})
  #define SMC_outsw(edev, r, b, l)	({	int __i; \
  					word *__b2; \
  					__b2 = (word *) b; \
  					for (__i = 0; __i < l; __i++) { \
  						SMC_outw(edev, *(__b2 + __i),\
  							r); \
  					} \
  				})
  
  #define SMC_insw(edev, r, b, l)	({	int __i ;  \
  					word *__b2;  \
  					__b2 = (word *) b;  \
  					for (__i = 0; __i < l; __i++) {  \
  						*(__b2 + __i) = SMC_inw(edev,\
  							r);  \
  						SMC_inw(edev, 0);  \
  					};  \
  				})
  
  #endif
  
  /*
   ****************************************************************************
   *	Bank Select Field
   ****************************************************************************
   */
  #define LAN91C96_BANK_SELECT  14       /* Bank Select Register */
  #define LAN91C96_BANKSELECT (0x3UC << 0)
  #define BANK0               0x00
  #define BANK1               0x01
  #define BANK2               0x02
  #define BANK3               0x03
  #define BANK4               0x04
  
  /*
   ****************************************************************************
   *	EEPROM Addresses.
   ****************************************************************************
   */
  #define EEPROM_MAC_OFFSET_1    0x6020
  #define EEPROM_MAC_OFFSET_2    0x6021
  #define EEPROM_MAC_OFFSET_3    0x6022
  
  /*
   ****************************************************************************
   *	Bank 0 Register Map in I/O Space
   ****************************************************************************
   */
  #define LAN91C96_TCR          0        /* Transmit Control Register */
  #define LAN91C96_EPH_STATUS   2        /* EPH Status Register */
  #define LAN91C96_RCR          4        /* Receive Control Register */
  #define LAN91C96_COUNTER      6        /* Counter Register */
  #define LAN91C96_MIR          8        /* Memory Information Register */
  #define LAN91C96_MCR          10       /* Memory Configuration Register */
  
  /*
   ****************************************************************************
   *	Transmit Control Register - Bank 0 - Offset 0
   ****************************************************************************
   */
  #define LAN91C96_TCR_TXENA        (0x1U << 0)
  #define LAN91C96_TCR_LOOP         (0x1U << 1)
  #define LAN91C96_TCR_FORCOL       (0x1U << 2)
  #define LAN91C96_TCR_TXP_EN       (0x1U << 3)
  #define LAN91C96_TCR_PAD_EN       (0x1U << 7)
  #define LAN91C96_TCR_NOCRC        (0x1U << 8)
  #define LAN91C96_TCR_MON_CSN      (0x1U << 10)
  #define LAN91C96_TCR_FDUPLX       (0x1U << 11)
  #define LAN91C96_TCR_STP_SQET     (0x1U << 12)
  #define LAN91C96_TCR_EPH_LOOP     (0x1U << 13)
  #define LAN91C96_TCR_ETEN_TYPE    (0x1U << 14)
  #define LAN91C96_TCR_FDSE         (0x1U << 15)
  
  /*
   ****************************************************************************
   *	EPH Status Register - Bank 0 - Offset 2
   ****************************************************************************
   */
  #define LAN91C96_EPHSR_TX_SUC     (0x1U << 0)
  #define LAN91C96_EPHSR_SNGL_COL   (0x1U << 1)
  #define LAN91C96_EPHSR_MUL_COL    (0x1U << 2)
  #define LAN91C96_EPHSR_LTX_MULT   (0x1U << 3)
  #define LAN91C96_EPHSR_16COL      (0x1U << 4)
  #define LAN91C96_EPHSR_SQET       (0x1U << 5)
  #define LAN91C96_EPHSR_LTX_BRD    (0x1U << 6)
  #define LAN91C96_EPHSR_TX_DEFR    (0x1U << 7)
  #define LAN91C96_EPHSR_WAKEUP     (0x1U << 8)
  #define LAN91C96_EPHSR_LATCOL     (0x1U << 9)
  #define LAN91C96_EPHSR_LOST_CARR  (0x1U << 10)
  #define LAN91C96_EPHSR_EXC_DEF    (0x1U << 11)
  #define LAN91C96_EPHSR_CTR_ROL    (0x1U << 12)
  
  #define LAN91C96_EPHSR_LINK_OK    (0x1U << 14)
  #define LAN91C96_EPHSR_TX_UNRN    (0x1U << 15)
  
  #define LAN91C96_EPHSR_ERRORS     (LAN91C96_EPHSR_SNGL_COL  |    \
  				   LAN91C96_EPHSR_MUL_COL   |    \
  				   LAN91C96_EPHSR_16COL     |    \
  				   LAN91C96_EPHSR_SQET      |    \
  				   LAN91C96_EPHSR_TX_DEFR   |    \
  				   LAN91C96_EPHSR_LATCOL    |    \
  				   LAN91C96_EPHSR_LOST_CARR |    \
  				   LAN91C96_EPHSR_EXC_DEF   |    \
  				   LAN91C96_EPHSR_LINK_OK   |    \
  				   LAN91C96_EPHSR_TX_UNRN)
  
  /*
   ****************************************************************************
   *	Receive Control Register - Bank 0 - Offset 4
   ****************************************************************************
   */
  #define LAN91C96_RCR_RX_ABORT     (0x1U << 0)
  #define LAN91C96_RCR_PRMS         (0x1U << 1)
  #define LAN91C96_RCR_ALMUL        (0x1U << 2)
  #define LAN91C96_RCR_RXEN         (0x1U << 8)
  #define LAN91C96_RCR_STRIP_CRC    (0x1U << 9)
  #define LAN91C96_RCR_FILT_CAR     (0x1U << 14)
  #define LAN91C96_RCR_SOFT_RST     (0x1U << 15)
  
  /*
   ****************************************************************************
   *	Counter Register - Bank 0 - Offset 6
   ****************************************************************************
   */
  #define LAN91C96_ECR_SNGL_COL     (0xFU << 0)
  #define LAN91C96_ECR_MULT_COL     (0xFU << 5)
  #define LAN91C96_ECR_DEF_TX       (0xFU << 8)
  #define LAN91C96_ECR_EXC_DEF_TX   (0xFU << 12)
  
  /*
   ****************************************************************************
   *	Memory Information Register - Bank 0 - OFfset 8
   ****************************************************************************
   */
  #define LAN91C96_MIR_SIZE        (0x18 << 0)    /* 6144 bytes */
  
  /*
   ****************************************************************************
   *	Memory Configuration Register - Bank 0 - Offset 10
   ****************************************************************************
   */
  #define LAN91C96_MCR_MEM_RES      (0xFFU << 0)
  #define LAN91C96_MCR_MEM_MULT     (0x3U << 9)
  #define LAN91C96_MCR_HIGH_ID      (0x3U << 12)
  
  #define LAN91C96_MCR_TRANSMIT_PAGES 0x6
  
  /*
   ****************************************************************************
   *	Bank 1 Register Map in I/O Space
   ****************************************************************************
   */
  #define LAN91C96_CONFIG       0        /* Configuration Register */
  #define LAN91C96_BASE         2        /* Base Address Register */
  #define LAN91C96_IA0          4        /* Individual Address Register - 0 */
  #define LAN91C96_IA1          5        /* Individual Address Register - 1 */
  #define LAN91C96_IA2          6        /* Individual Address Register - 2 */
  #define LAN91C96_IA3          7        /* Individual Address Register - 3 */
  #define LAN91C96_IA4          8        /* Individual Address Register - 4 */
  #define LAN91C96_IA5          9        /* Individual Address Register - 5 */
  #define LAN91C96_GEN_PURPOSE  10       /* General Address Registers */
  #define LAN91C96_CONTROL      12       /* Control Register */
  
  /*
   ****************************************************************************
   *	Configuration Register - Bank 1 - Offset 0
   ****************************************************************************
   */
  #define LAN91C96_CR_INT_SEL0      (0x1U << 1)
  #define LAN91C96_CR_INT_SEL1      (0x1U << 2)
  #define LAN91C96_CR_RES           (0x3U << 3)
  #define LAN91C96_CR_DIS_LINK      (0x1U << 6)
  #define LAN91C96_CR_16BIT         (0x1U << 7)
  #define LAN91C96_CR_AUI_SELECT    (0x1U << 8)
  #define LAN91C96_CR_SET_SQLCH     (0x1U << 9)
  #define LAN91C96_CR_FULL_STEP     (0x1U << 10)
  #define LAN91C96_CR_NO_WAIT       (0x1U << 12)
  
  /*
   ****************************************************************************
   *	Base Address Register - Bank 1 - Offset 2
   ****************************************************************************
   */
  #define LAN91C96_BAR_RA_BITS      (0x27U << 0)
  #define LAN91C96_BAR_ROM_SIZE     (0x1U << 6)
  #define LAN91C96_BAR_A_BITS       (0xFFU << 8)
  
  /*
   ****************************************************************************
   *	Control Register - Bank 1 - Offset 12
   ****************************************************************************
   */
  #define LAN91C96_CTR_STORE        (0x1U << 0)
  #define LAN91C96_CTR_RELOAD       (0x1U << 1)
  #define LAN91C96_CTR_EEPROM       (0x1U << 2)
  #define LAN91C96_CTR_TE_ENABLE    (0x1U << 5)
  #define LAN91C96_CTR_CR_ENABLE    (0x1U << 6)
  #define LAN91C96_CTR_LE_ENABLE    (0x1U << 7)
  #define LAN91C96_CTR_BIT_8        (0x1U << 8)
  #define LAN91C96_CTR_AUTO_RELEASE (0x1U << 11)
  #define LAN91C96_CTR_WAKEUP_EN    (0x1U << 12)
  #define LAN91C96_CTR_PWRDN        (0x1U << 13)
  #define LAN91C96_CTR_RCV_BAD      (0x1U << 14)
  
  /*
   ****************************************************************************
   *	Bank 2 Register Map in I/O Space
   ****************************************************************************
   */
  #define LAN91C96_MMU            0      /* MMU Command Register */
  #define LAN91C96_AUTO_TX_START  1      /* Auto Tx Start Register */
  #define LAN91C96_PNR            2      /* Packet Number Register */
  #define LAN91C96_ARR            3      /* Allocation Result Register */
  #define LAN91C96_FIFO           4      /* FIFO Ports Register */
  #define LAN91C96_POINTER        6      /* Pointer Register */
  #define LAN91C96_DATA_HIGH      8      /* Data High Register */
  #define LAN91C96_DATA_LOW       10     /* Data Low Register */
  #define LAN91C96_INT_STATS      12     /* Interrupt Status Register - RO */
  #define LAN91C96_INT_ACK        12     /* Interrupt Acknowledge Register -WO */
  #define LAN91C96_INT_MASK       13     /* Interrupt Mask Register */
  
  /*
   ****************************************************************************
   *	MMU Command Register - Bank 2 - Offset 0
   ****************************************************************************
   */
  #define LAN91C96_MMUCR_NO_BUSY    (0x1U << 0)
  #define LAN91C96_MMUCR_N1         (0x1U << 1)
  #define LAN91C96_MMUCR_N2         (0x1U << 2)
  #define LAN91C96_MMUCR_COMMAND    (0xFU << 4)
  #define LAN91C96_MMUCR_ALLOC_TX   (0x2U << 4)    /* WXYZ = 0010 */
  #define LAN91C96_MMUCR_RESET_MMU  (0x4U << 4)    /* WXYZ = 0100 */
  #define LAN91C96_MMUCR_REMOVE_RX  (0x6U << 4)    /* WXYZ = 0110 */
  #define LAN91C96_MMUCR_REMOVE_TX  (0x7U << 4)    /* WXYZ = 0111 */
  #define LAN91C96_MMUCR_RELEASE_RX (0x8U << 4)    /* WXYZ = 1000 */
  #define LAN91C96_MMUCR_RELEASE_TX (0xAU << 4)    /* WXYZ = 1010 */
  #define LAN91C96_MMUCR_ENQUEUE    (0xCU << 4)    /* WXYZ = 1100 */
  #define LAN91C96_MMUCR_RESET_TX   (0xEU << 4)    /* WXYZ = 1110 */
  
  /*
   ****************************************************************************
   *	Auto Tx Start Register - Bank 2 - Offset 1
   ****************************************************************************
   */
  #define LAN91C96_AUTOTX           (0xFFU << 0)
  
  /*
   ****************************************************************************
   *	Packet Number Register - Bank 2 - Offset 2
   ****************************************************************************
   */
  #define LAN91C96_PNR_TX           (0x1FU << 0)
  
  /*
   ****************************************************************************
   *	Allocation Result Register - Bank 2 - Offset 3
   ****************************************************************************
   */
  #define LAN91C96_ARR_ALLOC_PN     (0x7FU << 0)
  #define LAN91C96_ARR_FAILED       (0x1U << 7)
  
  /*
   ****************************************************************************
   *	FIFO Ports Register - Bank 2 - Offset 4
   ****************************************************************************
   */
  #define LAN91C96_FIFO_TX_DONE_PN  (0x1FU << 0)
  #define LAN91C96_FIFO_TEMPTY      (0x1U << 7)
  #define LAN91C96_FIFO_RX_DONE_PN  (0x1FU << 8)
  #define LAN91C96_FIFO_RXEMPTY     (0x1U << 15)
  
  /*
   ****************************************************************************
   *	Pointer Register - Bank 2 - Offset 6
   ****************************************************************************
   */
  #define LAN91C96_PTR_LOW          (0xFFU << 0)
  #define LAN91C96_PTR_HIGH         (0x7U << 8)
  #define LAN91C96_PTR_AUTO_TX      (0x1U << 11)
  #define LAN91C96_PTR_ETEN         (0x1U << 12)
  #define LAN91C96_PTR_READ         (0x1U << 13)
  #define LAN91C96_PTR_AUTO_INCR    (0x1U << 14)
  #define LAN91C96_PTR_RCV          (0x1U << 15)
  
  #define LAN91C96_PTR_RX_FRAME     (LAN91C96_PTR_RCV       |    \
  				   LAN91C96_PTR_AUTO_INCR |    \
  				   LAN91C96_PTR_READ)
  
  /*
   ****************************************************************************
   *	Data Register - Bank 2 - Offset 8
   ****************************************************************************
   */
  #define LAN91C96_CONTROL_CRC      (0x1U << 4)    /* CRC bit */
  #define LAN91C96_CONTROL_ODD      (0x1U << 5)    /* ODD bit */
  
  /*
   ****************************************************************************
   *	Interrupt Status Register - Bank 2 - Offset 12
   ****************************************************************************
   */
  #define LAN91C96_IST_RCV_INT      (0x1U << 0)
  #define LAN91C96_IST_TX_INT       (0x1U << 1)
  #define LAN91C96_IST_TX_EMPTY_INT (0x1U << 2)
  #define LAN91C96_IST_ALLOC_INT    (0x1U << 3)
  #define LAN91C96_IST_RX_OVRN_INT  (0x1U << 4)
  #define LAN91C96_IST_EPH_INT      (0x1U << 5)
  #define LAN91C96_IST_ERCV_INT     (0x1U << 6)
  #define LAN91C96_IST_RX_IDLE_INT  (0x1U << 7)
  
  /*
   ****************************************************************************
   *	Interrupt Acknowledge Register - Bank 2 - Offset 12
   ****************************************************************************
   */
  #define LAN91C96_ACK_TX_INT       (0x1U << 1)
  #define LAN91C96_ACK_TX_EMPTY_INT (0x1U << 2)
  #define LAN91C96_ACK_RX_OVRN_INT  (0x1U << 4)
  #define LAN91C96_ACK_ERCV_INT     (0x1U << 6)
  
  /*
   ****************************************************************************
   *	Interrupt Mask Register - Bank 2 - Offset 13
   ****************************************************************************
   */
  #define LAN91C96_MSK_RCV_INT      (0x1U << 0)
  #define LAN91C96_MSK_TX_INT       (0x1U << 1)
  #define LAN91C96_MSK_TX_EMPTY_INT (0x1U << 2)
  #define LAN91C96_MSK_ALLOC_INT    (0x1U << 3)
  #define LAN91C96_MSK_RX_OVRN_INT  (0x1U << 4)
  #define LAN91C96_MSK_EPH_INT      (0x1U << 5)
  #define LAN91C96_MSK_ERCV_INT     (0x1U << 6)
  #define LAN91C96_MSK_TX_IDLE_INT  (0x1U << 7)
  
  /*
   ****************************************************************************
   *	Bank 3 Register Map in I/O Space
   **************************************************************************
   */
  #define LAN91C96_MGMT_MDO         (0x1U << 0)
  #define LAN91C96_MGMT_MDI         (0x1U << 1)
  #define LAN91C96_MGMT_MCLK        (0x1U << 2)
  #define LAN91C96_MGMT_MDOE        (0x1U << 3)
  #define LAN91C96_MGMT_LOW_ID      (0x3U << 4)
  #define LAN91C96_MGMT_IOS0        (0x1U << 8)
  #define LAN91C96_MGMT_IOS1        (0x1U << 9)
  #define LAN91C96_MGMT_IOS2        (0x1U << 10)
  #define LAN91C96_MGMT_nXNDEC      (0x1U << 11)
  #define LAN91C96_MGMT_HIGH_ID     (0x3U << 12)
  
  /*
   ****************************************************************************
   *	Revision Register - Bank 3 - Offset 10
   ****************************************************************************
   */
  #define LAN91C96_REV_REVID        (0xFU << 0)
  #define LAN91C96_REV_CHIPID       (0xFU << 4)
  
  /*
   ****************************************************************************
   *	Early RCV Register - Bank 3 - Offset 12
   ****************************************************************************
   */
  #define LAN91C96_ERCV_THRESHOLD   (0x1FU << 0)
  #define LAN91C96_ERCV_RCV_DISCRD  (0x1U << 7)
  
  /*
   ****************************************************************************
   *	PCMCIA Configuration Registers
   ****************************************************************************
   */
  #define LAN91C96_ECOR    0x8000        /* Ethernet Configuration Register */
  #define LAN91C96_ECSR    0x8002        /* Ethernet Configuration and Status */
  
  /*
   ****************************************************************************
   *	PCMCIA Ethernet Configuration Option Register (ECOR)
   ****************************************************************************
   */
  #define LAN91C96_ECOR_ENABLE       (0x1U << 0)
  #define LAN91C96_ECOR_WR_ATTRIB    (0x1U << 2)
  #define LAN91C96_ECOR_LEVEL_REQ    (0x1U << 6)
  #define LAN91C96_ECOR_SRESET       (0x1U << 7)
  
  /*
   ****************************************************************************
   *	PCMCIA Ethernet Configuration and Status Register (ECSR)
   ****************************************************************************
   */
  #define LAN91C96_ECSR_INTR        (0x1U << 1)
  #define LAN91C96_ECSR_PWRDWN      (0x1U << 2)
  #define LAN91C96_ECSR_IOIS8       (0x1U << 5)
  
  /*
   ****************************************************************************
   *	Receive Frame Status Word - See page 38 of the LAN91C96 specification.
   ****************************************************************************
   */
  #define LAN91C96_TOO_SHORT        (0x1U << 10)
  #define LAN91C96_TOO_LONG         (0x1U << 11)
  #define LAN91C96_ODD_FRM          (0x1U << 12)
  #define LAN91C96_BAD_CRC          (0x1U << 13)
  #define LAN91C96_BROD_CAST        (0x1U << 14)
  #define LAN91C96_ALGN_ERR         (0x1U << 15)
  
  #define FRAME_FILTER              (LAN91C96_TOO_SHORT | LAN91C96_TOO_LONG  | LAN91C96_BAD_CRC   | LAN91C96_ALGN_ERR)
  
  /*
   ****************************************************************************
   *	Default MAC Address
   ****************************************************************************
   */
  #define MAC_DEF_HI  0x0800
  #define MAC_DEF_MED 0x3333
  #define MAC_DEF_LO  0x0100
  
  /*
   ****************************************************************************
   *	Default I/O Signature - 0x33
   ****************************************************************************
   */
  #define LAN91C96_LOW_SIGNATURE        (0x33U << 0)
  #define LAN91C96_HIGH_SIGNATURE       (0x33U << 8)
  #define LAN91C96_SIGNATURE (LAN91C96_HIGH_SIGNATURE | LAN91C96_LOW_SIGNATURE)
  
  #define LAN91C96_MAX_PAGES     6        /* Maximum number of 256 pages. */
  #define ETHERNET_MAX_LENGTH 1514
  
  
  /*-------------------------------------------------------------------------
   *  I define some macros to make it easier to do somewhat common
   * or slightly complicated, repeated tasks.
   *-------------------------------------------------------------------------
   */
  
  /* select a register bank, 0 to 3  */
  
  #define SMC_SELECT_BANK(edev, x)  { SMC_outw(edev, x, LAN91C96_BANK_SELECT); }
  
  /* this enables an interrupt in the interrupt mask register */
  #define SMC_ENABLE_INT(edev, x) {\
  		unsigned char mask;\
  		SMC_SELECT_BANK(edev, 2);\
  		mask = SMC_inb(edev, LAN91C96_INT_MASK);\
  		mask |= (x);\
  		SMC_outb(edev, mask, LAN91C96_INT_MASK); \
  }
  
  /* this disables an interrupt from the interrupt mask register */
  
  #define SMC_DISABLE_INT(edev, x) {\
  		unsigned char mask;\
  		SMC_SELECT_BANK(edev, 2);\
  		mask = SMC_inb(edev, LAN91C96_INT_MASK);\
  		mask &= ~(x);\
  		SMC_outb(edev, mask, LAN91C96_INT_MASK); \
  }
  
  /*----------------------------------------------------------------------
   * Define the interrupts that I want to receive from the card
   *
   * I want:
   *  LAN91C96_IST_EPH_INT, for nasty errors
   *  LAN91C96_IST_RCV_INT, for happy received packets
   *  LAN91C96_IST_RX_OVRN_INT, because I have to kick the receiver
   *-------------------------------------------------------------------------
   */
  #define SMC_INTERRUPT_MASK   (LAN91C96_IST_EPH_INT | LAN91C96_IST_RX_OVRN_INT | LAN91C96_IST_RCV_INT)
  
  #endif  /* _LAN91C96_H_ */