ioasic_addrs.h (6475B)
1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Definitions for the address map in the JUNKIO Asic 7 * 8 * Created with Information from: 9 * 10 * "DEC 3000 300/400/500/600/700/800/900 AXP Models System Programmer's Manual" 11 * 12 * and the Mach Sources 13 * 14 * Copyright (C) 199x the Anonymous 15 * Copyright (C) 2002, 2003 Maciej W. Rozycki 16 */ 17 18#ifndef __ASM_MIPS_DEC_IOASIC_ADDRS_H 19#define __ASM_MIPS_DEC_IOASIC_ADDRS_H 20 21#define IOASIC_SLOT_SIZE 0x00040000 22 23/* 24 * Address ranges decoded by the I/O ASIC for onboard devices. 25 */ 26#define IOASIC_SYS_ROM (0*IOASIC_SLOT_SIZE) /* system board ROM */ 27#define IOASIC_IOCTL (1*IOASIC_SLOT_SIZE) /* I/O ASIC */ 28#define IOASIC_ESAR (2*IOASIC_SLOT_SIZE) /* LANCE MAC address chip */ 29#define IOASIC_LANCE (3*IOASIC_SLOT_SIZE) /* LANCE Ethernet */ 30#define IOASIC_SCC0 (4*IOASIC_SLOT_SIZE) /* SCC #0 */ 31#define IOASIC_VDAC_HI (5*IOASIC_SLOT_SIZE) /* VDAC (maxine) */ 32#define IOASIC_SCC1 (6*IOASIC_SLOT_SIZE) /* SCC #1 (3min, 3max+) */ 33#define IOASIC_VDAC_LO (7*IOASIC_SLOT_SIZE) /* VDAC (maxine) */ 34#define IOASIC_TOY (8*IOASIC_SLOT_SIZE) /* RTC */ 35#define IOASIC_ISDN (9*IOASIC_SLOT_SIZE) /* ISDN (maxine) */ 36#define IOASIC_ERRADDR (9*IOASIC_SLOT_SIZE) /* bus error address (3max+) */ 37#define IOASIC_CHKSYN (10*IOASIC_SLOT_SIZE) /* ECC syndrome (3max+) */ 38#define IOASIC_ACC_BUS (10*IOASIC_SLOT_SIZE) /* ACCESS.bus (maxine) */ 39#define IOASIC_MCR (11*IOASIC_SLOT_SIZE) /* memory control (3max+) */ 40#define IOASIC_FLOPPY (11*IOASIC_SLOT_SIZE) /* FDC (maxine) */ 41#define IOASIC_SCSI (12*IOASIC_SLOT_SIZE) /* ASC SCSI */ 42#define IOASIC_FDC_DMA (13*IOASIC_SLOT_SIZE) /* FDC DMA (maxine) */ 43#define IOASIC_SCSI_DMA (14*IOASIC_SLOT_SIZE) /* ??? */ 44#define IOASIC_RES_15 (15*IOASIC_SLOT_SIZE) /* unused? */ 45 46 47/* 48 * Offsets for I/O ASIC registers 49 * (relative to (dec_kn_slot_base + IOASIC_IOCTL)). 50 */ 51 /* all systems */ 52#define IO_REG_SCSI_DMA_P 0x00 /* SCSI DMA Pointer */ 53#define IO_REG_SCSI_DMA_BP 0x10 /* SCSI DMA Buffer Pointer */ 54#define IO_REG_LANCE_DMA_P 0x20 /* LANCE DMA Pointer */ 55#define IO_REG_SCC0A_T_DMA_P 0x30 /* SCC0A Transmit DMA Pointer */ 56#define IO_REG_SCC0A_R_DMA_P 0x40 /* SCC0A Receive DMA Pointer */ 57 58 /* except Maxine */ 59#define IO_REG_SCC1A_T_DMA_P 0x50 /* SCC1A Transmit DMA Pointer */ 60#define IO_REG_SCC1A_R_DMA_P 0x60 /* SCC1A Receive DMA Pointer */ 61 62 /* Maxine */ 63#define IO_REG_AB_T_DMA_P 0x50 /* ACCESS.bus Transmit DMA Pointer */ 64#define IO_REG_AB_R_DMA_P 0x60 /* ACCESS.bus Receive DMA Pointer */ 65#define IO_REG_FLOPPY_DMA_P 0x70 /* Floppy DMA Pointer */ 66#define IO_REG_ISDN_T_DMA_P 0x80 /* ISDN Transmit DMA Pointer */ 67#define IO_REG_ISDN_T_DMA_BP 0x90 /* ISDN Transmit DMA Buffer Pointer */ 68#define IO_REG_ISDN_R_DMA_P 0xa0 /* ISDN Receive DMA Pointer */ 69#define IO_REG_ISDN_R_DMA_BP 0xb0 /* ISDN Receive DMA Buffer Pointer */ 70 71 /* all systems */ 72#define IO_REG_DATA_0 0xc0 /* System Data Buffer 0 */ 73#define IO_REG_DATA_1 0xd0 /* System Data Buffer 1 */ 74#define IO_REG_DATA_2 0xe0 /* System Data Buffer 2 */ 75#define IO_REG_DATA_3 0xf0 /* System Data Buffer 3 */ 76 77 /* all systems */ 78#define IO_REG_SSR 0x100 /* System Support Register */ 79#define IO_REG_SIR 0x110 /* System Interrupt Register */ 80#define IO_REG_SIMR 0x120 /* System Interrupt Mask Reg. */ 81#define IO_REG_SAR 0x130 /* System Address Register */ 82 83 /* Maxine */ 84#define IO_REG_ISDN_T_DATA 0x140 /* ISDN Xmit Data Register */ 85#define IO_REG_ISDN_R_DATA 0x150 /* ISDN Receive Data Register */ 86 87 /* all systems */ 88#define IO_REG_LANCE_SLOT 0x160 /* LANCE I/O Slot Register */ 89#define IO_REG_SCSI_SLOT 0x170 /* SCSI Slot Register */ 90#define IO_REG_SCC0A_SLOT 0x180 /* SCC0A DMA Slot Register */ 91 92 /* except Maxine */ 93#define IO_REG_SCC1A_SLOT 0x190 /* SCC1A DMA Slot Register */ 94 95 /* Maxine */ 96#define IO_REG_AB_SLOT 0x190 /* ACCESS.bus DMA Slot Register */ 97#define IO_REG_FLOPPY_SLOT 0x1a0 /* Floppy Slot Register */ 98 99 /* all systems */ 100#define IO_REG_SCSI_SCR 0x1b0 /* SCSI Partial-Word DMA Control */ 101#define IO_REG_SCSI_SDR0 0x1c0 /* SCSI DMA Partial Word 0 */ 102#define IO_REG_SCSI_SDR1 0x1d0 /* SCSI DMA Partial Word 1 */ 103#define IO_REG_FCTR 0x1e0 /* Free-Running Counter */ 104#define IO_REG_RES_31 0x1f0 /* unused */ 105 106 107/* 108 * The upper 16 bits of the System Support Register are a part of the 109 * I/O ASIC's internal DMA engine and thus are common to all I/O ASIC 110 * machines. The exception is the Maxine, which makes use of the 111 * FLOPPY and ISDN bits (otherwise unused) and has a different SCC 112 * wiring. 113 */ 114 /* all systems */ 115#define IO_SSR_SCC0A_TX_DMA_EN (1<<31) /* SCC0A transmit DMA enable */ 116#define IO_SSR_SCC0A_RX_DMA_EN (1<<30) /* SCC0A receive DMA enable */ 117#define IO_SSR_RES_27 (1<<27) /* unused */ 118#define IO_SSR_RES_26 (1<<26) /* unused */ 119#define IO_SSR_RES_25 (1<<25) /* unused */ 120#define IO_SSR_RES_24 (1<<24) /* unused */ 121#define IO_SSR_RES_23 (1<<23) /* unused */ 122#define IO_SSR_SCSI_DMA_DIR (1<<18) /* SCSI DMA direction */ 123#define IO_SSR_SCSI_DMA_EN (1<<17) /* SCSI DMA enable */ 124#define IO_SSR_LANCE_DMA_EN (1<<16) /* LANCE DMA enable */ 125 126 /* except Maxine */ 127#define IO_SSR_SCC1A_TX_DMA_EN (1<<29) /* SCC1A transmit DMA enable */ 128#define IO_SSR_SCC1A_RX_DMA_EN (1<<28) /* SCC1A receive DMA enable */ 129#define IO_SSR_RES_22 (1<<22) /* unused */ 130#define IO_SSR_RES_21 (1<<21) /* unused */ 131#define IO_SSR_RES_20 (1<<20) /* unused */ 132#define IO_SSR_RES_19 (1<<19) /* unused */ 133 134 /* Maxine */ 135#define IO_SSR_AB_TX_DMA_EN (1<<29) /* ACCESS.bus xmit DMA enable */ 136#define IO_SSR_AB_RX_DMA_EN (1<<28) /* ACCESS.bus recv DMA enable */ 137#define IO_SSR_FLOPPY_DMA_DIR (1<<22) /* Floppy DMA direction */ 138#define IO_SSR_FLOPPY_DMA_EN (1<<21) /* Floppy DMA enable */ 139#define IO_SSR_ISDN_TX_DMA_EN (1<<20) /* ISDN transmit DMA enable */ 140#define IO_SSR_ISDN_RX_DMA_EN (1<<19) /* ISDN receive DMA enable */ 141 142/* 143 * The lower 16 bits are system-specific. Bits 15,11:8 are common and 144 * defined here. The rest is defined in system-specific headers. 145 */ 146#define KN0X_IO_SSR_DIAGDN (1<<15) /* diagnostic jumper */ 147#define KN0X_IO_SSR_SCC_RST (1<<11) /* ~SCC0,1 (Z85C30) reset */ 148#define KN0X_IO_SSR_RTC_RST (1<<10) /* ~RTC (DS1287) reset */ 149#define KN0X_IO_SSR_ASC_RST (1<<9) /* ~ASC (NCR53C94) reset */ 150#define KN0X_IO_SSR_LANCE_RST (1<<8) /* ~LANCE (Am7990) reset */ 151 152#endif /* __ASM_MIPS_DEC_IOASIC_ADDRS_H */