[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
 * 
 * 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(struct scsi_host_template *);
static int pas16_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
static int pas16_bus_reset(Scsi_Cmnd *);

#ifndef CMD_PER_LUN
#define CMD_PER_LUN 2
#endif

#ifndef CAN_QUEUE
#define CAN_QUEUE 32 
#endif

#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_bus_reset pas16_bus_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 */
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
	21	*
	22	* and
	23	*
	24	* NCR 5380 Family
	25	* SCSI Protocol Controller
	26	* Databook
	27	*
	28	* NCR Microelectronics
	29	* 1635 Aeroplaza Drive
	30	* Colorado Springs, CO 80916
	31	* 1+ (719) 578-3400
	32	* 1+ (800) 334-5454
	33	*/
	34
	35
	36	#ifndef PAS16_H
	37	#define PAS16_H
	38
	39	#define PAS16_PUBLIC_RELEASE 3
	40
	41	#define PDEBUG_INIT 0x1
	42	#define PDEBUG_TRANSFER 0x2
	43
	44	#define PAS16_DEFAULT_BASE_1 0x388
	45	#define PAS16_DEFAULT_BASE_2 0x384
	46	#define PAS16_DEFAULT_BASE_3 0x38c
	47	#define PAS16_DEFAULT_BASE_4 0x288
	48
	49	#define PAS16_DEFAULT_BOARD_1_IRQ 10
	50	#define PAS16_DEFAULT_BOARD_2_IRQ 12
	51	#define PAS16_DEFAULT_BOARD_3_IRQ 14
	52	#define PAS16_DEFAULT_BOARD_4_IRQ 15
	53
	54
	55	/*
	56	* The Pro Audio Spectrum boards are I/O mapped. They use a Zilog 5380
	57	* SCSI controller, which is the equivalent of NCR's 5380. "Pseudo-DMA"
	58	* architecture is used, where a PAL drives the DMA signals on the 5380
	59	* allowing fast, blind transfers with proper handshaking.
	60	*/
	61
	62
	63	/* The Time-out Counter register is used to safe-guard against a stuck
	64	* bus (in the case of RDY driven handshake) or a stuck byte (if 16-Bit
65	* DMA conversion is used). The counter uses a 28.224MHz clock
66	* divided by 14 as its clock source. In the case of a stuck byte in
67	* the holding register, an interrupt is generated (and mixed with the
68	* one with the drive) using the CD-ROM interrupt pointer.
69	*/
70
71	#define P_TIMEOUT_COUNTER_REG 0x4000
72	#define P_TC_DISABLE 0x80 /* Set to 0 to enable timeout int. */
73	/* Bits D6-D0 contain timeout count */
74
75
76	#define P_TIMEOUT_STATUS_REG_OFFSET 0x4001
77	#define P_TS_TIM 0x80 /* check timeout status */
78	/* Bits D6-D4 N/U */
79	#define P_TS_ARM_DRQ_INT 0x08 /* Arm DRQ Int. When set high,
80	* the next rising edge will
81	* cause a CD-ROM interrupt.
82	* When set low, the interrupt
83	* will be cleared. There is
84	* no status available for
85	* this interrupt.
86	*/
87	#define P_TS_ENABLE_TO_ERR_INTERRUPT /* Enable timeout error int. */
88	#define P_TS_ENABLE_WAIT /* Enable Wait */
89
90	#define P_TS_CT 0x01 /* clear timeout. Note: writing
91	* to this register clears the
92	* timeout error int. or status
93	*/
94
95
96	/*
97	* The data register reads/writes to/from the 5380 in pseudo-DMA mode
98	*/
99
100	#define P_DATA_REG_OFFSET 0x5c00 /* rw */
101
102	#define P_STATUS_REG_OFFSET 0x5c01 /* ro */
103	#define P_ST_RDY 0x80 /* 5380 DDRQ Status */
104
105	#define P_IRQ_STATUS 0x5c03
106	#define P_IS_IRQ 0x80 /* DIRQ status */
107
108	#define PCB_CONFIG 0x803
109	#define MASTER_ADDRESS_PTR 0x9a01 /* Fixed position - no relo */
110	#define SYS_CONFIG_4 0x8003
111	#define WAIT_STATE 0xbc00
112	#define OPERATION_MODE_1 0xec03
113	#define IO_CONFIG_3 0xf002
114
115
116	#ifndef ASM
117	static int pas16_abort(Scsi_Cmnd *);
118	static int pas16_biosparam(struct scsi_device , struct block_device ,
119	sector_t, int*);
d0be4a7d	120	static int pas16_detect(struct scsi_host_template *);
f281233d	121	static int pas16_queue_command(struct Scsi_Host , struct scsi_cmnd );
1da177e4	122	static int pas16_bus_reset(Scsi_Cmnd *);
1da177e4 LT	123
	124	#ifndef CMD_PER_LUN
	125	#define CMD_PER_LUN 2
	126	#endif
	127
	128	#ifndef CAN_QUEUE
	129	#define CAN_QUEUE 32
	130	#endif
	131
	132	#ifndef HOSTS_C
	133
	134	#define NCR5380_implementation_fields \
	135	volatile unsigned short io_port
	136
	137	#define NCR5380_local_declare() \
	138	volatile unsigned short io_port
	139
	140	#define NCR5380_setup(instance) \
	141	io_port = (instance)->io_port
	142
	143	#define PAS16_io_port(reg) ( io_port + pas16_offset[(reg)] )
	144
	145	#if !(PDEBUG & PDEBUG_TRANSFER)
	146	#define NCR5380_read(reg) ( inb(PAS16_io_port(reg)) )
	147	#define NCR5380_write(reg, value) ( outb((value),PAS16_io_port(reg)) )
	148	#else
	149	#define NCR5380_read(reg) \
	150	(((unsigned char) printk("scsi%d : read register %d at io_port %04x\n"\
	151	, instance->hostno, (reg), PAS16_io_port(reg))), inb( PAS16_io_port(reg)) )
	152
	153	#define NCR5380_write(reg, value) \
	154	(printk("scsi%d : write %02x to register %d at io_port %04x\n", \
	155	instance->hostno, (value), (reg), PAS16_io_port(reg)), \
	156	outb( (value),PAS16_io_port(reg) ) )
	157
	158	#endif
	159
	160
	161	#define NCR5380_intr pas16_intr
	162	#define do_NCR5380_intr do_pas16_intr
	163	#define NCR5380_queue_command pas16_queue_command
	164	#define NCR5380_abort pas16_abort
1da177e4	165	#define NCR5380_bus_reset pas16_bus_reset
1da177e4 LT	166	#define NCR5380_proc_info pas16_proc_info
	167
	168	/* 15 14 12 10 7 5 3
	169	1101 0100 1010 1000 */
	170
	171	#define PAS16_IRQS 0xd4a8
	172
	173	#endif /* else def HOSTS_C */
	174	#endif /* ndef ASM */
	175	#endif /* PAS16_H */