1/* 2 * Trantor T128/T128F/T228 defines 3 * Note : architecturally, the T100 and T128 are different and won't work 4 * 5 * Copyright 1993, Drew Eckhardt 6 * Visionary Computing 7 * (Unix and Linux consulting and custom programming) 8 * drew@colorado.edu 9 * +1 (303) 440-4894 10 * 11 * For more information, please consult 12 * 13 * Trantor Systems, Ltd. 14 * T128/T128F/T228 SCSI Host Adapter 15 * Hardware Specifications 16 * 17 * Trantor Systems, Ltd. 18 * 5415 Randall Place 19 * Fremont, CA 94538 20 * 1+ (415) 770-1400, FAX 1+ (415) 770-9910 21 */ 22 23#ifndef T128_H 24#define T128_H 25 26#define TDEBUG 0 27#define TDEBUG_INIT 0x1 28#define TDEBUG_TRANSFER 0x2 29 30/* 31 * The trantor boards are memory mapped. They use an NCR5380 or 32 * equivalent (my sample board had part second sourced from ZILOG). 33 * NCR's recommended "Pseudo-DMA" architecture is used, where 34 * a PAL drives the DMA signals on the 5380 allowing fast, blind 35 * transfers with proper handshaking. 36 */ 37 38/* 39 * Note : a boot switch is provided for the purpose of informing the 40 * firmware to boot or not boot from attached SCSI devices. So, I imagine 41 * there are fewer people who've yanked the ROM like they do on the Seagate 42 * to make bootup faster, and I'll probably use this for autodetection. 43 */ 44#define T_ROM_OFFSET 0 45 46/* 47 * Note : my sample board *WAS NOT* populated with the SRAM, so this 48 * can't be used for autodetection without a ROM present. 49 */ 50#define T_RAM_OFFSET 0x1800 51 52/* 53 * All of the registers are allocated 32 bytes of address space, except 54 * for the data register (read/write to/from the 5380 in pseudo-DMA mode) 55 */ 56#define T_CONTROL_REG_OFFSET 0x1c00 /* rw */ 57#define T_CR_INT 0x10 /* Enable interrupts */ 58#define T_CR_CT 0x02 /* Reset watchdog timer */ 59 60#define T_STATUS_REG_OFFSET 0x1c20 /* ro */ 61#define T_ST_BOOT 0x80 /* Boot switch */ 62#define T_ST_S3 0x40 /* User settable switches, */ 63#define T_ST_S2 0x20 /* read 0 when switch is on, 1 off */ 64#define T_ST_S1 0x10 65#define T_ST_PS2 0x08 /* Set for Microchannel 228 */ 66#define T_ST_RDY 0x04 /* 5380 DRQ */ 67#define T_ST_TIM 0x02 /* indicates 40us watchdog timer fired */ 68#define T_ST_ZERO 0x01 /* Always zero */ 69 70#define T_5380_OFFSET 0x1d00 /* 8 registers here, see NCR5380.h */ 71 72#define T_DATA_REG_OFFSET 0x1e00 /* rw 512 bytes long */ 73 74#ifndef ASM 75 76#ifndef CMD_PER_LUN 77#define CMD_PER_LUN 2 78#endif 79 80#ifndef CAN_QUEUE 81#define CAN_QUEUE 32 82#endif 83 84#define NCR5380_implementation_fields \ 85 void __iomem *base 86 87#define NCR5380_local_declare() \ 88 void __iomem *base 89 90#define NCR5380_setup(instance) \ 91 base = ((struct NCR5380_hostdata *)(instance->hostdata))->base 92 93#define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20)) 94 95#if !(TDEBUG & TDEBUG_TRANSFER) 96#define NCR5380_read(reg) readb(T128_address(reg)) 97#define NCR5380_write(reg, value) writeb((value),(T128_address(reg))) 98#else 99#define NCR5380_read(reg) \ 100 (((unsigned char) printk("scsi%d : read register %d at address %08x\n"\ 101 , instance->hostno, (reg), T128_address(reg))), readb(T128_address(reg))) 102 103#define NCR5380_write(reg, value) { \ 104 printk("scsi%d : write %02x to register %d at address %08x\n", \ 105 instance->hostno, (value), (reg), T128_address(reg)); \ 106 writeb((value), (T128_address(reg))); \ 107} 108#endif 109 110#define NCR5380_intr t128_intr 111#define do_NCR5380_intr do_t128_intr 112#define NCR5380_queue_command t128_queue_command 113#define NCR5380_abort t128_abort 114#define NCR5380_bus_reset t128_bus_reset 115#define NCR5380_info t128_info 116#define NCR5380_show_info t128_show_info 117#define NCR5380_write_info t128_write_info 118 119/* 15 14 12 10 7 5 3 120 1101 0100 1010 1000 */ 121 122#define T128_IRQS 0xc4a8 123 124#endif /* ndef ASM */ 125#endif /* T128_H */ 126