Source to arch/i386/netboot/dp8390.h
/* netboot
*
* dp8390.h,v
* Revision 1.1 1993/07/08 16:03:56 brezak
* Diskless boot prom code from Jim McKim ([email protected])
*
* Revision 1.1.1.1 1993/05/28 11:41:07 mckim
* Initial version.
*
*
* source in this file came from
* the Mach ethernet boot written by Leendert van Doorn.
*
* National Semiconductor DP8390 Network Interface Controller
*/
/* page 0: for reading */
#define DP_CR 0x00 /* read side of command register */
#define DP_CLDA0 0x01 /* current local DMA address 0 */
#define DP_CLDA1 0x02 /* current local DMA address 1 */
#define DP_BNRY 0x03 /* boundary pointer */
#define DP_TSR 0x04 /* transmit status register */
#define DP_NCR 0x05 /* number of collisions register */
#define DP_FIFO 0x06 /* FIFO */
#define DP_ISR 0x07 /* interrupt status register */
#define DP_CRDA0 0x08 /* current remote DMA address 0 */
#define DP_CRDA1 0x09 /* current remote DMA address 1 */
#define DP_RSR 0x0C /* receive status register */
#define DP_CNTR0 0x0D /* tally counter 0 */
#define DP_CNTR1 0x0E /* tally counter 1 */
#define DP_CNTR2 0x0F /* tally counter 2 */
/* page 0: for writing */
#define DP_CR 0x00 /* write side of command register */
#define DP_PSTART 0x01 /* page start register */
#define DP_PSTOP 0x02 /* page stop register */
#define DP_BNRY 0x03 /* boundary pointer */
#define DP_TPSR 0x04 /* transmit page start register */
#define DP_TBCR0 0x05 /* transmit byte count register 0 */
#define DP_TBCR1 0x06 /* transmit byte count register 1 */
#define DP_ISR 0x07 /* interrupt status register */
#define DP_RSAR0 0x08 /* remote start address register 0 */
#define DP_RSAR1 0x09 /* remote start address register 1 */
#define DP_RBCR0 0x0A /* remote byte count register 0 */
#define DP_RBCR1 0x0B /* remote byte count register 1 */
#define DP_RCR 0x0C /* receive configuration register */
#define DP_TCR 0x0D /* transmit configuration register */
#define DP_DCR 0x0E /* data configuration register */
#define DP_IMR 0x0F /* interrupt mask register */
/* page 1: read/write */
#define DP_CR 0x00 /* command register */
#define DP_PAR0 0x01 /* physical address register 0 */
#define DP_PAR1 0x02 /* physical address register 1 */
#define DP_PAR2 0x03 /* physical address register 2 */
#define DP_PAR3 0x04 /* physical address register 3 */
#define DP_PAR4 0x05 /* physical address register 4 */
#define DP_PAR5 0x06 /* physical address register 5 */
#define DP_CURR 0x07 /* current page register */
#define DP_MAR0 0x08 /* multicast address register 0 */
#define DP_MAR1 0x09 /* multicast address register 1 */
#define DP_MAR2 0x0A /* multicast address register 2 */
#define DP_MAR3 0x0B /* multicast address register 3 */
#define DP_MAR4 0x0C /* multicast address register 4 */
#define DP_MAR5 0x0D /* multicast address register 5 */
#define DP_MAR6 0x0E /* multicast address register 6 */
#define DP_MAR7 0x0F /* multicast address register 7 */
/* bits in command register */
#define CR_STP 0x01 /* stop: software reset */
#define CR_STA 0x02 /* start: activate NIC */
#define CR_TXP 0x04 /* transmit packet */
#define CR_DMA 0x38 /* mask for DMA control */
# define CR_DM_NOP 0x00 /* DMA: no operation */
# define CR_DM_RR 0x08 /* DMA: remote read */
# define CR_DM_RW 0x10 /* DMA: remote write */
# define CR_DM_SP 0x18 /* DMA: send packet */
# define CR_DM_ABORT 0x20 /* DMA: abort remote DMA operation */
#define CR_PS 0xC0 /* mask for page select */
# define CR_PS_P0 0x00 /* register page 0 */
# define CR_PS_P1 0x40 /* register page 1 */
# define CR_PS_T0 0x80 /* test mode register map */
# define CR_SP_T1 0xC0 /* test mode register map */
/* bits in interrupt status register */
#define ISR_PRX 0x01 /* packet received with no errors */
#define ISR_PTX 0x02 /* packet transmitted with no errors */
#define ISR_RXE 0x04 /* receive error */
#define ISR_TXE 0x08 /* transmit error */
#define ISR_OVW 0x10 /* overwrite warning */
#define ISR_CNT 0x20 /* counter overflow */
#define ISR_RDC 0x40 /* remote DMA complete */
#define ISR_RST 0x80 /* reset status */
/* bits in interrupt mask register */
#define IMR_PRXE 0x01 /* packet received ienable */
#define IMR_PTXE 0x02 /* packet transmitted ienable */
#define IMR_RXEE 0x04 /* receive error ienable */
#define IMR_TXEE 0x08 /* transmit error ienable */
#define IMR_OVWE 0x10 /* overwrite warning ienable */
#define IMR_CNTE 0x20 /* counter overflow ienable */
#define IMR_RDCE 0x40 /* DMA complete ienable */
/* bits in data control register */
#define DCR_WTS 0x01 /* word transfer select */
# define DCR_BYTEWIDE 0x00 /* WTS: byte wide transfers */
# define DCR_WORDWIDE 0x01 /* WTS: word wide transfers */
#define DCR_BOS 0x02 /* byte order select */
# define DCR_LTLENDIAN 0x00 /* BOS: little endian */
# define DCR_BIGENDIAN 0x02 /* BOS: big endian */
#define DCR_LAS 0x04 /* long address select */
#define DCR_BMS 0x08 /* burst mode select */
#define DCR_AR 0x10 /* autoinitialize remote */
#define DCR_FTS 0x60 /* FIFO threshold select */
# define DCR_2BYTES 0x00 /* 2 bytes */
# define DCR_4BYTES 0x40 /* 4 bytes */
# define DCR_8BYTES 0x20 /* 8 bytes */
# define DCR_12BYTES 0x60 /* 12 bytes */
/* bits in transmit configuration register */
#define TCR_CRC 0x01 /* inhibit CRC */
#define TCR_ELC 0x06 /* encoded loopback control */
# define TCR_NORMAL 0x00 /* ELC: normal operation */
# define TCR_INTERNAL 0x02 /* ELC: internal loopback */
# define TCR_0EXTERNAL 0x04 /* ELC: external loopback LPBK=0 */
# define TCR_1EXTERNAL 0x06 /* ELC: external loopback LPBK=1 */
#define TCR_ATD 0x08 /* auto transmit */
#define TCR_OFST 0x10 /* collision offset enable (be nice) */
/* bits in transmit status register */
#define TSR_PTX 0x01 /* packet transmitted (without error)*/
#define TSR_DFR 0x02 /* transmit deferred */
#define TSR_COL 0x04 /* transmit collided */
#define TSR_ABT 0x08 /* transmit aborted */
#define TSR_CRS 0x10 /* carrier sense lost */
#define TSR_FU 0x20 /* fifo underrun */
#define TSR_CDH 0x40 /* CD heartbeat */
#define TSR_OWC 0x80 /* out of window collision */
/* bits in receive configuration register */
#define RCR_SEP 0x01 /* save errored packets */
#define RCR_AR 0x02 /* accept runt packets */
#define RCR_AB 0x04 /* accept broadcast */
#define RCR_AM 0x08 /* accept multicast */
#define RCR_PRO 0x10 /* physical promiscuous */
#define RCR_MON 0x20 /* monitor mode */
/* bits in receive status register */
#define RSR_PRX 0x01 /* packet received intact */
#define RSR_CRC 0x02 /* CRC error */
#define RSR_FAE 0x04 /* frame alignment error */
#define RSR_FO 0x08 /* FIFO overrun */
#define RSR_MPA 0x10 /* missed packet */
#define RSR_PHY 0x20 /* multicast address match !! */
#define RSR_DIS 0x40 /* receiver disabled */
/* dp8390 configuration information */
typedef struct {
u_short dc_reg; /* dp8390 base address */
u_long dc_mem; /* base memory */
u_char dc_tpsr; /* transmit start page */
u_char dc_pstart; /* receive start page */
u_char dc_pstop; /* receive end page */
} dpconf_t;
/* dp8390 receive header */
typedef struct {
u_char dh_status; /* copy of rsr */
u_char dh_next; /* pointer to next packet */
u_char dh_rbcl; /* receive byte count low */
u_char dh_rbch; /* receive byte count high */
} dphdr_t;