/*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file " COPYING " in the main directory of this archive
* for more details .
*
* Definitions for the address map in the JUNKIO Asic
*
* Created with Information from :
*
* " DEC 3000 300 / 400 / 500 / 600 / 700 / 800 / 900 AXP Models System Programmer ' s Manual "
*
* and the Mach Sources
*
* Copyright ( C ) 199 x the Anonymous
* Copyright ( C ) 2002 , 2003 Maciej W . Rozycki
*/
#ifndef __ASM_MIPS_DEC_IOASIC_ADDRS_H
#define __ASM_MIPS_DEC_IOASIC_ADDRS_H
#define IOASIC_SLOT_SIZE 0 x00040000
/*
* Address ranges decoded by the I / O ASIC for onboard devices .
*/
#define IOASIC_SYS_ROM (0 *IOASIC_SLOT_SIZE) /* system board ROM */
#define IOASIC_IOCTL (1 *IOASIC_SLOT_SIZE) /* I/O ASIC */
#define IOASIC_ESAR (2 *IOASIC_SLOT_SIZE) /* LANCE MAC address chip */
#define IOASIC_LANCE (3 *IOASIC_SLOT_SIZE) /* LANCE Ethernet */
#define IOASIC_SCC0 (4 *IOASIC_SLOT_SIZE) /* SCC #0 */
#define IOASIC_VDAC_HI (5 *IOASIC_SLOT_SIZE) /* VDAC (maxine) */
#define IOASIC_SCC1 (6 *IOASIC_SLOT_SIZE) /* SCC #1 (3min, 3max+) */
#define IOASIC_VDAC_LO (7 *IOASIC_SLOT_SIZE) /* VDAC (maxine) */
#define IOASIC_TOY (8 *IOASIC_SLOT_SIZE) /* RTC */
#define IOASIC_ISDN (9 *IOASIC_SLOT_SIZE) /* ISDN (maxine) */
#define IOASIC_ERRADDR (9 *IOASIC_SLOT_SIZE) /* bus error address (3max+) */
#define IOASIC_CHKSYN (10 *IOASIC_SLOT_SIZE) /* ECC syndrome (3max+) */
#define IOASIC_ACC_BUS (10 *IOASIC_SLOT_SIZE) /* ACCESS.bus (maxine) */
#define IOASIC_MCR (11 *IOASIC_SLOT_SIZE) /* memory control (3max+) */
#define IOASIC_FLOPPY (11 *IOASIC_SLOT_SIZE) /* FDC (maxine) */
#define IOASIC_SCSI (12 *IOASIC_SLOT_SIZE) /* ASC SCSI */
#define IOASIC_FDC_DMA (13 *IOASIC_SLOT_SIZE) /* FDC DMA (maxine) */
#define IOASIC_SCSI_DMA (14 *IOASIC_SLOT_SIZE) /* ??? */
#define IOASIC_RES_15 (15 *IOASIC_SLOT_SIZE) /* unused? */
/*
* Offsets for I / O ASIC registers
* ( relative to ( dec_kn_slot_base + IOASIC_IOCTL ) ) .
*/
/* all systems */
#define IO_REG_SCSI_DMA_P 0 x00 /* SCSI DMA Pointer */
#define IO_REG_SCSI_DMA_BP 0 x10 /* SCSI DMA Buffer Pointer */
#define IO_REG_LANCE_DMA_P 0 x20 /* LANCE DMA Pointer */
#define IO_REG_SCC0A_T_DMA_P 0 x30 /* SCC0A Transmit DMA Pointer */
#define IO_REG_SCC0A_R_DMA_P 0 x40 /* SCC0A Receive DMA Pointer */
/* except Maxine */
#define IO_REG_SCC1A_T_DMA_P 0 x50 /* SCC1A Transmit DMA Pointer */
#define IO_REG_SCC1A_R_DMA_P 0 x60 /* SCC1A Receive DMA Pointer */
/* Maxine */
#define IO_REG_AB_T_DMA_P 0 x50 /* ACCESS.bus Transmit DMA Pointer */
#define IO_REG_AB_R_DMA_P 0 x60 /* ACCESS.bus Receive DMA Pointer */
#define IO_REG_FLOPPY_DMA_P 0 x70 /* Floppy DMA Pointer */
#define IO_REG_ISDN_T_DMA_P 0 x80 /* ISDN Transmit DMA Pointer */
#define IO_REG_ISDN_T_DMA_BP 0 x90 /* ISDN Transmit DMA Buffer Pointer */
#define IO_REG_ISDN_R_DMA_P 0 xa0 /* ISDN Receive DMA Pointer */
#define IO_REG_ISDN_R_DMA_BP 0 xb0 /* ISDN Receive DMA Buffer Pointer */
/* all systems */
#define IO_REG_DATA_0 0 xc0 /* System Data Buffer 0 */
#define IO_REG_DATA_1 0 xd0 /* System Data Buffer 1 */
#define IO_REG_DATA_2 0 xe0 /* System Data Buffer 2 */
#define IO_REG_DATA_3 0 xf0 /* System Data Buffer 3 */
/* all systems */
#define IO_REG_SSR 0 x100 /* System Support Register */
#define IO_REG_SIR 0 x110 /* System Interrupt Register */
#define IO_REG_SIMR 0 x120 /* System Interrupt Mask Reg. */
#define IO_REG_SAR 0 x130 /* System Address Register */
/* Maxine */
#define IO_REG_ISDN_T_DATA 0 x140 /* ISDN Xmit Data Register */
#define IO_REG_ISDN_R_DATA 0 x150 /* ISDN Receive Data Register */
/* all systems */
#define IO_REG_LANCE_SLOT 0 x160 /* LANCE I/O Slot Register */
#define IO_REG_SCSI_SLOT 0 x170 /* SCSI Slot Register */
#define IO_REG_SCC0A_SLOT 0 x180 /* SCC0A DMA Slot Register */
/* except Maxine */
#define IO_REG_SCC1A_SLOT 0 x190 /* SCC1A DMA Slot Register */
/* Maxine */
#define IO_REG_AB_SLOT 0 x190 /* ACCESS.bus DMA Slot Register */
#define IO_REG_FLOPPY_SLOT 0 x1a0 /* Floppy Slot Register */
/* all systems */
#define IO_REG_SCSI_SCR 0 x1b0 /* SCSI Partial-Word DMA Control */
#define IO_REG_SCSI_SDR0 0 x1c0 /* SCSI DMA Partial Word 0 */
#define IO_REG_SCSI_SDR1 0 x1d0 /* SCSI DMA Partial Word 1 */
#define IO_REG_FCTR 0 x1e0 /* Free-Running Counter */
#define IO_REG_RES_31 0 x1f0 /* unused */
/*
* The upper 16 bits of the System Support Register are a part of the
* I / O ASIC ' s internal DMA engine and thus are common to all I / O ASIC
* machines . The exception is the Maxine , which makes use of the
* FLOPPY and ISDN bits ( otherwise unused ) and has a different SCC
* wiring .
*/
/* all systems */
#define IO_SSR_SCC0A_TX_DMA_EN (1 <<31 ) /* SCC0A transmit DMA enable */
#define IO_SSR_SCC0A_RX_DMA_EN (1 <<30 ) /* SCC0A receive DMA enable */
#define IO_SSR_RES_27 (1 <<27 ) /* unused */
#define IO_SSR_RES_26 (1 <<26 ) /* unused */
#define IO_SSR_RES_25 (1 <<25 ) /* unused */
#define IO_SSR_RES_24 (1 <<24 ) /* unused */
#define IO_SSR_RES_23 (1 <<23 ) /* unused */
#define IO_SSR_SCSI_DMA_DIR (1 <<18 ) /* SCSI DMA direction */
#define IO_SSR_SCSI_DMA_EN (1 <<17 ) /* SCSI DMA enable */
#define IO_SSR_LANCE_DMA_EN (1 <<16 ) /* LANCE DMA enable */
/* except Maxine */
#define IO_SSR_SCC1A_TX_DMA_EN (1 <<29 ) /* SCC1A transmit DMA enable */
#define IO_SSR_SCC1A_RX_DMA_EN (1 <<28 ) /* SCC1A receive DMA enable */
#define IO_SSR_RES_22 (1 <<22 ) /* unused */
#define IO_SSR_RES_21 (1 <<21 ) /* unused */
#define IO_SSR_RES_20 (1 <<20 ) /* unused */
#define IO_SSR_RES_19 (1 <<19 ) /* unused */
/* Maxine */
#define IO_SSR_AB_TX_DMA_EN (1 <<29 ) /* ACCESS.bus xmit DMA enable */
#define IO_SSR_AB_RX_DMA_EN (1 <<28 ) /* ACCESS.bus recv DMA enable */
#define IO_SSR_FLOPPY_DMA_DIR (1 <<22 ) /* Floppy DMA direction */
#define IO_SSR_FLOPPY_DMA_EN (1 <<21 ) /* Floppy DMA enable */
#define IO_SSR_ISDN_TX_DMA_EN (1 <<20 ) /* ISDN transmit DMA enable */
#define IO_SSR_ISDN_RX_DMA_EN (1 <<19 ) /* ISDN receive DMA enable */
/*
* The lower 16 bits are system - specific . Bits 15 , 11 : 8 are common and
* defined here . The rest is defined in system - specific headers .
*/
#define KN0X_IO_SSR_DIAGDN (1 <<15 ) /* diagnostic jumper */
#define KN0X_IO_SSR_SCC_RST (1 <<11 ) /* ~SCC0,1 (Z85C30) reset */
#define KN0X_IO_SSR_RTC_RST (1 <<10 ) /* ~RTC (DS1287) reset */
#define KN0X_IO_SSR_ASC_RST (1 <<9 ) /* ~ASC (NCR53C94) reset */
#define KN0X_IO_SSR_LANCE_RST (1 <<8 ) /* ~LANCE (Am7990) reset */
#endif /* __ASM_MIPS_DEC_IOASIC_ADDRS_H */
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