/* * 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 int pas16_abort(Scsi_Cmnd *); int pas16_biosparam(Disk *, int, int*); int pas16_detect(Scsi_Host_Template *); int pas16_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *)); int pas16_reset(Scsi_Cmnd *); #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. */ #ifdef HOSTS_C #define MV_PAS16 {NULL, NULL, "Pro Audio Spectrum-16 SCSI", \ pas16_detect, NULL, NULL, \ NULL, pas16_queue_command, pas16_abort, pas16_reset, NULL, \ pas16_biosparam, \ /* can queue */ CAN_QUEUE, /* id */ 7, SG_ALL, \ /* cmd per lun */ CMD_PER_LUN , 0, 0, DISABLE_CLUSTERING} #else #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 NCR5380_queue_command pas16_queue_command #define NCR5380_abort pas16_abort #define NCR5380_reset pas16_reset /* 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 */