2 * Trantor T128/T128F/T228 defines
3 * Note : architecturally, the T100 and T128 are different and won't work
5 * Copyright 1993, Drew Eckhardt
7 * (Unix and Linux consulting and custom programming)
11 * For more information, please consult
13 * Trantor Systems, Ltd.
14 * T128/T128F/T228 SCSI Host Adapter
15 * Hardware Specifications
17 * Trantor Systems, Ltd.
20 * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
27 #define TDEBUG_INIT 0x1
28 #define TDEBUG_TRANSFER 0x2
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.
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.
44 #define T_ROM_OFFSET 0
47 * Note : my sample board *WAS NOT* populated with the SRAM, so this
48 * can't be used for autodetection without a ROM present.
50 #define T_RAM_OFFSET 0x1800
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)
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 */
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 */
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 */
70 #define T_5380_OFFSET 0x1d00 /* 8 registers here, see NCR5380.h */
72 #define T_DATA_REG_OFFSET 0x1e00 /* rw 512 bytes long */
84 #define NCR5380_implementation_fields \
87 #define NCR5380_local_declare() \
90 #define NCR5380_setup(instance) \
91 base = ((struct NCR5380_hostdata *)(instance->hostdata))->base
93 #define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))
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)))
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)))
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))); \
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
120 1101 0100 1010 1000 */
122 #define T128_IRQS 0xc4a8
124 #endif /* ndef ASM */