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