[linux.git] / drivers / scsi / pas16.h

/*
 * This driver adapted from Drew Eckhardt's Trantor T128 driver
 *
 * Copyright 1993, Drew Eckhardt
 *	Visionary Computing
 *	(Unix and Linux consulting and custom programming)
 *	[email protected]
 *      +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 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

#ifndef CMD_PER_LUN
#define CMD_PER_LUN 2
#endif

#ifndef CAN_QUEUE
#define CAN_QUEUE 32 
#endif

#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_bus_reset pas16_bus_reset
#define NCR5380_info pas16_info
#define NCR5380_show_info pas16_show_info
#define NCR5380_write_info pas16_write_info

/* 15 14 12 10 7 5 3 
   1101 0100 1010 1000 */
   
#define PAS16_IRQS 0xd4a8 

#endif /* ndef ASM */
#endif /* PAS16_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This driver adapted from Drew Eckhardt's Trantor T128 driver
	3	*
	4	* Copyright 1993, Drew Eckhardt
	5	* Visionary Computing
	6	* (Unix and Linux consulting and custom programming)
	7	* [email protected]
	8	* +1 (303) 666-5836
	9	*
	10	* ( Based on T128 - DISTRIBUTION RELEASE 3. )
	11	*
	12	* Modified to work with the Pro Audio Spectrum/Studio 16
	13	* by John Weidman.
	14	*
	15	*
	16	* For more information, please consult
	17	*
	18	* Media Vision
	19	* (510) 770-8600
	20	* (800) 348-7116
1da177e4 LT	21	*/
	22
	23
	24	#ifndef PAS16_H
	25	#define PAS16_H
	26
1da177e4 LT	27	#define PDEBUG_INIT 0x1
	28	#define PDEBUG_TRANSFER 0x2
	29
	30	#define PAS16_DEFAULT_BASE_1 0x388
	31	#define PAS16_DEFAULT_BASE_2 0x384
	32	#define PAS16_DEFAULT_BASE_3 0x38c
	33	#define PAS16_DEFAULT_BASE_4 0x288
	34
	35	#define PAS16_DEFAULT_BOARD_1_IRQ 10
	36	#define PAS16_DEFAULT_BOARD_2_IRQ 12
	37	#define PAS16_DEFAULT_BOARD_3_IRQ 14
	38	#define PAS16_DEFAULT_BOARD_4_IRQ 15
	39
	40
	41	/*
	42	* The Pro Audio Spectrum boards are I/O mapped. They use a Zilog 5380
	43	* SCSI controller, which is the equivalent of NCR's 5380. "Pseudo-DMA"
	44	* architecture is used, where a PAL drives the DMA signals on the 5380
	45	* allowing fast, blind transfers with proper handshaking.
	46	*/
	47
	48
	49	/* The Time-out Counter register is used to safe-guard against a stuck
	50	* bus (in the case of RDY driven handshake) or a stuck byte (if 16-Bit
	51	* DMA conversion is used). The counter uses a 28.224MHz clock
	52	* divided by 14 as its clock source. In the case of a stuck byte in
	53	* the holding register, an interrupt is generated (and mixed with the
	54	* one with the drive) using the CD-ROM interrupt pointer.
	55	*/
	56
	57	#define P_TIMEOUT_COUNTER_REG 0x4000
	58	#define P_TC_DISABLE 0x80 /* Set to 0 to enable timeout int. */
	59	/* Bits D6-D0 contain timeout count */
	60
	61
	62	#define P_TIMEOUT_STATUS_REG_OFFSET 0x4001
	63	#define P_TS_TIM 0x80 /* check timeout status */
	64	/* Bits D6-D4 N/U */
	65	#define P_TS_ARM_DRQ_INT 0x08 /* Arm DRQ Int. When set high,
	66	* the next rising edge will
	67	* cause a CD-ROM interrupt.
	68	* When set low, the interrupt
	69	* will be cleared. There is
	70	* no status available for
	71	* this interrupt.
	72	*/
	73	#define P_TS_ENABLE_TO_ERR_INTERRUPT /* Enable timeout error int. */
	74	#define P_TS_ENABLE_WAIT /* Enable Wait */
	75
	76	#define P_TS_CT 0x01 /* clear timeout. Note: writing
	77	* to this register clears the
	78	* timeout error int. or status
	79	*/
	80
	81
	82	/*
	83	* The data register reads/writes to/from the 5380 in pseudo-DMA mode
	84	*/
	85
	86	#define P_DATA_REG_OFFSET 0x5c00 /* rw */
	87
	88	#define P_STATUS_REG_OFFSET 0x5c01 /* ro */
	89	#define P_ST_RDY 0x80 /* 5380 DDRQ Status */
	90
91	#define P_IRQ_STATUS 0x5c03
92	#define P_IS_IRQ 0x80 /* DIRQ status */
93
94	#define PCB_CONFIG 0x803
95	#define MASTER_ADDRESS_PTR 0x9a01 /* Fixed position - no relo */
96	#define SYS_CONFIG_4 0x8003
97	#define WAIT_STATE 0xbc00
98	#define OPERATION_MODE_1 0xec03
99	#define IO_CONFIG_3 0xf002
100
101
102	#ifndef ASM
1da177e4 LT	103
	104	#ifndef CMD_PER_LUN
	105	#define CMD_PER_LUN 2
	106	#endif
	107
	108	#ifndef CAN_QUEUE
	109	#define CAN_QUEUE 32
	110	#endif
	111
1da177e4 LT	112	#define NCR5380_implementation_fields \
	113	volatile unsigned short io_port
	114
	115	#define NCR5380_local_declare() \
	116	volatile unsigned short io_port
	117
	118	#define NCR5380_setup(instance) \
	119	io_port = (instance)->io_port
	120
	121	#define PAS16_io_port(reg) ( io_port + pas16_offset[(reg)] )
	122
	123	#if !(PDEBUG & PDEBUG_TRANSFER)
	124	#define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
	125	#define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
	126	#else
	127	#define NCR5380_read(reg) \
	128	(((unsigned char) printk("scsi%d : read register %d at io_port %04x\n"\
	129	, instance->hostno, (reg), PAS16_io_port(reg))), inb( PAS16_io_port(reg)) )
	130
	131	#define NCR5380_write(reg, value) \
	132	(printk("scsi%d : write %02x to register %d at io_port %04x\n", \
	133	instance->hostno, (value), (reg), PAS16_io_port(reg)), \
	134	outb( (value),PAS16_io_port(reg) ) )
	135
	136	#endif
	137
	138
	139	#define NCR5380_intr pas16_intr
	140	#define do_NCR5380_intr do_pas16_intr
	141	#define NCR5380_queue_command pas16_queue_command
	142	#define NCR5380_abort pas16_abort
1da177e4	143	#define NCR5380_bus_reset pas16_bus_reset
8c32513b	144	#define NCR5380_info pas16_info
dd7ab71b AV	145	#define NCR5380_show_info pas16_show_info
dd7ab71b AV	146	#define NCR5380_write_info pas16_write_info
1da177e4 LT	147
	148	/* 15 14 12 10 7 5 3
	149	1101 0100 1010 1000 */
	150
	151	#define PAS16_IRQS 0xd4a8
	152
1da177e4 LT	153	#endif /* ndef ASM */
1da177e4 LT	154	#endif /* PAS16_H */