/* * 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 1#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 propper handshaking.  *//* The Time-out Counter register is used to safe-guard against a stuck * bus (in the case of RDY driven hadnshake) 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 ASMint pas16_abort(Scsi_Cmnd *, int);int pas16_biosparam(int, int, int*);int pas16_detect(int);const char *pas16_info(void);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 {"Pro Audio Spectrum-16 SCSI", pas16_detect, pas16_info,\	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}#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 */