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/*
* 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
*/
#ifndef PAS16_H
#define PAS16_H
#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
#define NCR5380_implementation_fields /* none */
#define PAS16_io_port(reg) (instance->io_port + pas16_offset[(reg)])
#define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
#define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
#define NCR5380_dma_recv_setup pas16_pread
#define NCR5380_dma_send_setup pas16_pwrite
#define NCR5380_dma_residual(instance) (0)
#define NCR5380_intr pas16_intr
#define NCR5380_queue_command pas16_queue_command
#define NCR5380_abort pas16_abort
#define NCR5380_bus_reset pas16_bus_reset
#define NCR5380_info pas16_info
/* 15 14 12 10 7 5 3
1101 0100 1010 1000 */
#define PAS16_IRQS 0xd4a8
#endif /* PAS16_H */
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