Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
branch: master
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 154 lines (128 sloc) 4.276 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153
/*
* Trantor T128/T128F/T228 defines
* Note : architecturally, the T100 and T128 are different and won't work
*
* Copyright 1993, Drew Eckhardt
* Visionary Computing
* (Unix and Linux consulting and custom programming)
* drew@colorado.edu
* +1 (303) 440-4894
*
* DISTRIBUTION RELEASE 3.
*
* For more information, please consult
*
* Trantor Systems, Ltd.
* T128/T128F/T228 SCSI Host Adapter
* Hardware Specifications
*
* Trantor Systems, Ltd.
* 5415 Randall Place
* Fremont, CA 94538
* 1+ (415) 770-1400, FAX 1+ (415) 770-9910
*
* and
*
* NCR 5380 Family
* SCSI Protocol Controller
* Databook
*
* NCR Microelectronics
* 1635 Aeroplaza Drive
* Colorado Springs, CO 80916
* 1+ (719) 578-3400
* 1+ (800) 334-5454
*/

/*
* $Log: t128.h,v $
*/

#ifndef T128_H
#define T128_H

#define T128_PUBLIC_RELEASE 3

#define TDEBUG 0
#define TDEBUG_INIT 0x1
#define TDEBUG_TRANSFER 0x2

/*
* The trantor boards are memory mapped. They use an NCR5380 or
* equivalent (my sample board had part second sourced from ZILOG).
* NCR's recommended "Pseudo-DMA" architecture is used, where
* a PAL drives the DMA signals on the 5380 allowing fast, blind
* transfers with proper handshaking.
*/

/*
* Note : a boot switch is provided for the purpose of informing the
* firmware to boot or not boot from attached SCSI devices. So, I imagine
* there are fewer people who've yanked the ROM like they do on the Seagate
* to make bootup faster, and I'll probably use this for autodetection.
*/
#define T_ROM_OFFSET 0

/*
* Note : my sample board *WAS NOT* populated with the SRAM, so this
* can't be used for autodetection without a ROM present.
*/
#define T_RAM_OFFSET 0x1800

/*
* All of the registers are allocated 32 bytes of address space, except
* for the data register (read/write to/from the 5380 in pseudo-DMA mode)
*/
#define T_CONTROL_REG_OFFSET 0x1c00 /* rw */
#define T_CR_INT 0x10 /* Enable interrupts */
#define T_CR_CT 0x02 /* Reset watchdog timer */

#define T_STATUS_REG_OFFSET 0x1c20 /* ro */
#define T_ST_BOOT 0x80 /* Boot switch */
#define T_ST_S3 0x40 /* User settable switches, */
#define T_ST_S2 0x20 /* read 0 when switch is on, 1 off */
#define T_ST_S1 0x10
#define T_ST_PS2 0x08 /* Set for Microchannel 228 */
#define T_ST_RDY 0x04 /* 5380 DRQ */
#define T_ST_TIM 0x02 /* indicates 40us watchdog timer fired */
#define T_ST_ZERO 0x01 /* Always zero */

#define T_5380_OFFSET 0x1d00 /* 8 registers here, see NCR5380.h */

#define T_DATA_REG_OFFSET 0x1e00 /* rw 512 bytes long */

#ifndef ASM
static int t128_abort(struct scsi_cmnd *);
static int t128_biosparam(struct scsi_device *, struct block_device *,
sector_t, int*);
static int t128_detect(struct scsi_host_template *);
static int t128_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
static int t128_bus_reset(struct scsi_cmnd *);

#ifndef CMD_PER_LUN
#define CMD_PER_LUN 2
#endif

#ifndef CAN_QUEUE
#define CAN_QUEUE 32
#endif

#ifndef HOSTS_C

#define NCR5380_implementation_fields \
void __iomem *base

#define NCR5380_local_declare() \
void __iomem *base

#define NCR5380_setup(instance) \
base = ((struct NCR5380_hostdata *)(instance->hostdata))->base

#define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))

#if !(TDEBUG & TDEBUG_TRANSFER)
#define NCR5380_read(reg) readb(T128_address(reg))
#define NCR5380_write(reg, value) writeb((value),(T128_address(reg)))
#else
#define NCR5380_read(reg) \
(((unsigned char) printk("scsi%d : read register %d at address %08x\n"\
, instance->hostno, (reg), T128_address(reg))), readb(T128_address(reg)))

#define NCR5380_write(reg, value) { \
printk("scsi%d : write %02x to register %d at address %08x\n", \
instance->hostno, (value), (reg), T128_address(reg)); \
writeb((value), (T128_address(reg))); \
}
#endif

#define NCR5380_intr t128_intr
#define do_NCR5380_intr do_t128_intr
#define NCR5380_queue_command t128_queue_command
#define NCR5380_abort t128_abort
#define NCR5380_bus_reset t128_bus_reset
#define NCR5380_show_info t128_show_info
#define NCR5380_write_info t128_write_info

/* 15 14 12 10 7 5 3
1101 0100 1010 1000 */

#define T128_IRQS 0xc4a8

#endif /* else def HOSTS_C */
#endif /* ndef ASM */
#endif /* T128_H */
Something went wrong with that request. Please try again.