t128.h
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上传日期:2013-04-10
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- /*
- * 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_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
- int t128_abort(Scsi_Cmnd *);
- int t128_biosparam(Disk *, kdev_t, int*);
- int t128_detect(Scsi_Host_Template *);
- int t128_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
- int t128_reset(Scsi_Cmnd *, unsigned int reset_flags);
- int t128_proc_info (char *buffer, char **start, off_t offset,
- int length, int hostno, int inout);
- #ifndef NULL
- #define NULL 0
- #endif
- #ifndef CMD_PER_LUN
- #define CMD_PER_LUN 2
- #endif
- #ifndef CAN_QUEUE
- #define CAN_QUEUE 32
- #endif
- /*
- * I hadn't thought of this with the earlier drivers - but to prevent
- * macro definition conflicts, we shouldn't define all of the internal
- * macros when this is being used solely for the host stub.
- */
- #define TRANTOR_T128 {
- name: "Trantor T128/T128F/T228",
- detect: t128_detect,
- queuecommand: t128_queue_command,
- abort: t128_abort,
- reset: t128_reset,
- bios_param: t128_biosparam,
- can_queue: CAN_QUEUE,
- this_id: 7,
- sg_tablesize: SG_ALL,
- cmd_per_lun: CMD_PER_LUN,
- use_clustering: DISABLE_CLUSTERING}
- #ifndef HOSTS_C
- #define NCR5380_implementation_fields
- unsigned long base
- #define NCR5380_local_declare()
- unsigned long base
- #define NCR5380_setup(instance)
- base = (instance)->base
- #define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))
- #if !(TDEBUG & TDEBUG_TRANSFER)
- #define NCR5380_read(reg) isa_readb(T128_address(reg))
- #define NCR5380_write(reg, value) isa_writeb((value),(T128_address(reg)))
- #else
- #define NCR5380_read(reg)
- (((unsigned char) printk("scsi%d : read register %d at address %08xn"
- , instance->hostno, (reg), T128_address(reg))), isa_readb(T128_address(reg)))
- #define NCR5380_write(reg, value) {
- printk("scsi%d : write %02x to register %d at address %08xn",
- instance->hostno, (value), (reg), T128_address(reg));
- isa_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_reset t128_reset
- #define NCR5380_proc_info t128_proc_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 */