blob: e3e6d2d609282acb91c10b2fa1f7702f923a3daf [file] [log] [blame]
/*
* This driver adapted from Drew Eckhardt's Trantor T128 driver
*
* Copyright 1993, Drew Eckhardt
* Visionary Computing
* (Unix and Linux consulting and custom programming)
* drew@colorado.edu
* +1 (303) 666-5836
*
* ( Based on T128 - DISTRIBUTION RELEASE 3. )
*
* Modified to work with the Pro Audio Spectrum/Studio 16
* by John Weidman.
*
*
* For more information, please consult
*
* Media Vision
* (510) 770-8600
* (800) 348-7116
*
* 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
*/
#ifndef PAS16_H
#define PAS16_H
#define PAS16_PUBLIC_RELEASE 3
#define PDEBUG_INIT 0x1
#define PDEBUG_TRANSFER 0x2
#define PAS16_DEFAULT_BASE_1 0x388
#define PAS16_DEFAULT_BASE_2 0x384
#define PAS16_DEFAULT_BASE_3 0x38c
#define PAS16_DEFAULT_BASE_4 0x288
#define PAS16_DEFAULT_BOARD_1_IRQ 10
#define PAS16_DEFAULT_BOARD_2_IRQ 12
#define PAS16_DEFAULT_BOARD_3_IRQ 14
#define PAS16_DEFAULT_BOARD_4_IRQ 15
/*
* The Pro Audio Spectrum boards are I/O mapped. They use a Zilog 5380
* SCSI controller, which is the equivalent of NCR's 5380. "Pseudo-DMA"
* architecture is used, where a PAL drives the DMA signals on the 5380
* allowing fast, blind transfers with proper handshaking.
*/
/* The Time-out Counter register is used to safe-guard against a stuck
* bus (in the case of RDY driven handshake) or a stuck byte (if 16-Bit
* DMA conversion is used). The counter uses a 28.224MHz clock
* divided by 14 as its clock source. In the case of a stuck byte in
* the holding register, an interrupt is generated (and mixed with the
* one with the drive) using the CD-ROM interrupt pointer.
*/
#define P_TIMEOUT_COUNTER_REG 0x4000
#define P_TC_DISABLE 0x80 /* Set to 0 to enable timeout int. */
/* Bits D6-D0 contain timeout count */
#define P_TIMEOUT_STATUS_REG_OFFSET 0x4001
#define P_TS_TIM 0x80 /* check timeout status */
/* Bits D6-D4 N/U */
#define P_TS_ARM_DRQ_INT 0x08 /* Arm DRQ Int. When set high,
* the next rising edge will
* cause a CD-ROM interrupt.
* When set low, the interrupt
* will be cleared. There is
* no status available for
* this interrupt.
*/
#define P_TS_ENABLE_TO_ERR_INTERRUPT /* Enable timeout error int. */
#define P_TS_ENABLE_WAIT /* Enable Wait */
#define P_TS_CT 0x01 /* clear timeout. Note: writing
* to this register clears the
* timeout error int. or status
*/
/*
* The data register reads/writes to/from the 5380 in pseudo-DMA mode
*/
#define P_DATA_REG_OFFSET 0x5c00 /* rw */
#define P_STATUS_REG_OFFSET 0x5c01 /* ro */
#define P_ST_RDY 0x80 /* 5380 DDRQ Status */
#define P_IRQ_STATUS 0x5c03
#define P_IS_IRQ 0x80 /* DIRQ status */
#define PCB_CONFIG 0x803
#define MASTER_ADDRESS_PTR 0x9a01 /* Fixed position - no relo */
#define SYS_CONFIG_4 0x8003
#define WAIT_STATE 0xbc00
#define OPERATION_MODE_1 0xec03
#define IO_CONFIG_3 0xf002
#ifndef ASM
static int pas16_abort(Scsi_Cmnd *);
static int pas16_biosparam(struct scsi_device *, struct block_device *,
sector_t, int*);
static int pas16_detect(Scsi_Host_Template *);
static int pas16_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
static int pas16_bus_reset(Scsi_Cmnd *);
static int pas16_host_reset(Scsi_Cmnd *);
static int pas16_device_reset(Scsi_Cmnd *);
static int pas16_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 MV_PAS16 { \
.name = "Pro Audio Spectrum-16 SCSI", \
.detect = pas16_detect, \
.queuecommand = pas16_queue_command, \
.eh_abort_handler = pas16_abort, \
.eh_bus_reset_handler = pas16_bus_reset, \
.eh_device_reset_handler = pas16_device_reset, \
.eh_host_reset_handler = pas16_host_reset, \
.bios_param = pas16_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 \
volatile unsigned short io_port
#define NCR5380_local_declare() \
volatile unsigned short io_port
#define NCR5380_setup(instance) \
io_port = (instance)->io_port
#define PAS16_io_port(reg) ( io_port + pas16_offset[(reg)] )
#if !(PDEBUG & PDEBUG_TRANSFER)
#define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
#define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
#else
#define NCR5380_read(reg) \
(((unsigned char) printk("scsi%d : read register %d at io_port %04x\n"\
, instance->hostno, (reg), PAS16_io_port(reg))), inb( PAS16_io_port(reg)) )
#define NCR5380_write(reg, value) \
(printk("scsi%d : write %02x to register %d at io_port %04x\n", \
instance->hostno, (value), (reg), PAS16_io_port(reg)), \
outb( (value),PAS16_io_port(reg) ) )
#endif
#define NCR5380_intr pas16_intr
#define do_NCR5380_intr do_pas16_intr
#define NCR5380_queue_command pas16_queue_command
#define NCR5380_abort pas16_abort
#define NCR5380_device_reset pas16_device_reset
#define NCR5380_bus_reset pas16_bus_reset
#define NCR5380_host_reset pas16_host_reset
#define NCR5380_proc_info pas16_proc_info
/* 15 14 12 10 7 5 3
1101 0100 1010 1000 */
#define PAS16_IRQS 0xd4a8
#endif /* else def HOSTS_C */
#endif /* ndef ASM */
#endif /* PAS16_H */