[deliverable/linux.git] / drivers / scsi / t128.h

/*
 * Trantor T128/T128F/T228 defines
 *	Note : architecturally, the T100 and T128 are different and won't work
 *
 * Copyright 1993, Drew Eckhardt
 *	Visionary Computing
 *	(Unix and Linux consulting and custom programming)
 *	drew@colorado.edu
 *      +1 (303) 440-4894
 *
 * DISTRIBUTION RELEASE 3. 
 *
 * For more information, please consult 
 *
 * Trantor Systems, Ltd.
 * T128/T128F/T228 SCSI Host Adapter
 * Hardware Specifications
 * 
 * Trantor Systems, Ltd. 
 * 5415 Randall Place
 * Fremont, CA 94538
 * 1+ (415) 770-1400, FAX 1+ (415) 770-9910
 * 
 * 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
 */

/*
 * $Log: t128.h,v $
 */

#ifndef T128_H
#define T128_H

#define T128_PUBLIC_RELEASE 3

#define TDEBUG_INIT	0x1
#define TDEBUG_TRANSFER 0x2

/*
 * The trantor boards are memory mapped. They use an NCR5380 or 
 * equivalent (my sample board had part second sourced from ZILOG).
 * NCR's recommended "Pseudo-DMA" architecture is used, where 
 * a PAL drives the DMA signals on the 5380 allowing fast, blind
 * transfers with proper handshaking. 
 */

/*
 * Note : a boot switch is provided for the purpose of informing the 
 * firmware to boot or not boot from attached SCSI devices.  So, I imagine
 * there are fewer people who've yanked the ROM like they do on the Seagate
 * to make bootup faster, and I'll probably use this for autodetection.
 */
#define T_ROM_OFFSET		0

/*
 * Note : my sample board *WAS NOT* populated with the SRAM, so this
 * can't be used for autodetection without a ROM present.
 */
#define T_RAM_OFFSET		0x1800

/*
 * All of the registers are allocated 32 bytes of address space, except
 * for the data register (read/write to/from the 5380 in pseudo-DMA mode)
 */ 
#define T_CONTROL_REG_OFFSET	0x1c00	/* rw */
#define T_CR_INT		0x10	/* Enable interrupts */
#define T_CR_CT			0x02	/* Reset watchdog timer */

#define T_STATUS_REG_OFFSET	0x1c20	/* ro */
#define T_ST_BOOT		0x80	/* Boot switch */
#define T_ST_S3			0x40	/* User settable switches, */
#define T_ST_S2			0x20	/* read 0 when switch is on, 1 off */
#define T_ST_S1			0x10
#define T_ST_PS2		0x08	/* Set for Microchannel 228 */
#define T_ST_RDY		0x04	/* 5380 DRQ */
#define T_ST_TIM		0x02	/* indicates 40us watchdog timer fired */
#define T_ST_ZERO		0x01	/* Always zero */

#define T_5380_OFFSET		0x1d00	/* 8 registers here, see NCR5380.h */

#define T_DATA_REG_OFFSET	0x1e00	/* rw 512 bytes long */

#ifndef ASM
static int t128_abort(Scsi_Cmnd *);
static int t128_biosparam(struct scsi_device *, struct block_device *,
			  sector_t, int*);
static int t128_detect(Scsi_Host_Template *);
static int t128_queue_command(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
static int t128_host_reset(Scsi_Cmnd *);
static int t128_bus_reset(Scsi_Cmnd *);
static int t128_device_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 \
    void __iomem *base

#define NCR5380_local_declare() \
    void __iomem *base

#define NCR5380_setup(instance) \
    base = ((struct NCR5380_hostdata *)(instance->hostdata))->base

#define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))

#if !(TDEBUG & TDEBUG_TRANSFER) 
#define NCR5380_read(reg) readb(T128_address(reg))
#define NCR5380_write(reg, value) writeb((value),(T128_address(reg)))
#else
#define NCR5380_read(reg)						\
    (((unsigned char) printk("scsi%d : read register %d at address %08x\n"\
    , instance->hostno, (reg), T128_address(reg))), readb(T128_address(reg)))

#define NCR5380_write(reg, value) {					\
    printk("scsi%d : write %02x to register %d at address %08x\n", 	\
	    instance->hostno, (value), (reg), T128_address(reg));	\
    writeb((value), (T128_address(reg)));				\
}
#endif

#define NCR5380_intr t128_intr
#define do_NCR5380_intr do_t128_intr
#define NCR5380_queue_command t128_queue_command
#define NCR5380_abort t128_abort
#define NCR5380_host_reset t128_host_reset
#define NCR5380_device_reset t128_device_reset
#define NCR5380_bus_reset t128_bus_reset
#define NCR5380_proc_info t128_proc_info

/* 15 14 12 10 7 5 3 
   1101 0100 1010 1000 */
   
#define T128_IRQS 0xc4a8 

#endif /* else def HOSTS_C */
#endif /* ndef ASM */
#endif /* T128_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Trantor T128/T128F/T228 defines
	3	* Note : architecturally, the T100 and T128 are different and won't work
	4	*
	5	* Copyright 1993, Drew Eckhardt
	6	* Visionary Computing
	7	* (Unix and Linux consulting and custom programming)
	8	* drew@colorado.edu
	9	* +1 (303) 440-4894
	10	*
	11	* DISTRIBUTION RELEASE 3.
	12	*
	13	* For more information, please consult
	14	*
	15	* Trantor Systems, Ltd.
	16	* T128/T128F/T228 SCSI Host Adapter
	17	* Hardware Specifications
	18	*
	19	* Trantor Systems, Ltd.
	20	* 5415 Randall Place
	21	* Fremont, CA 94538
	22	* 1+ (415) 770-1400, FAX 1+ (415) 770-9910
	23	*
	24	* and
	25	*
	26	* NCR 5380 Family
	27	* SCSI Protocol Controller
	28	* Databook
	29	*
	30	* NCR Microelectronics
	31	* 1635 Aeroplaza Drive
	32	* Colorado Springs, CO 80916
	33	* 1+ (719) 578-3400
	34	* 1+ (800) 334-5454
	35	*/
	36
	37	/*
	38	* $Log: t128.h,v $
	39	*/
	40
	41	#ifndef T128_H
	42	#define T128_H
	43
	44	#define T128_PUBLIC_RELEASE 3
	45
	46	#define TDEBUG_INIT 0x1
	47	#define TDEBUG_TRANSFER 0x2
	48
	49	/*
	50	* The trantor boards are memory mapped. They use an NCR5380 or
	51	* equivalent (my sample board had part second sourced from ZILOG).
	52	* NCR's recommended "Pseudo-DMA" architecture is used, where
	53	* a PAL drives the DMA signals on the 5380 allowing fast, blind
	54	* transfers with proper handshaking.
	55	*/
	56
	57	/*
	58	* Note : a boot switch is provided for the purpose of informing the
	59	* firmware to boot or not boot from attached SCSI devices. So, I imagine
	60	* there are fewer people who've yanked the ROM like they do on the Seagate
	61	* to make bootup faster, and I'll probably use this for autodetection.
	62	*/
	63	#define T_ROM_OFFSET 0
	64
65	/*
66	* Note : my sample board WAS NOT populated with the SRAM, so this
67	* can't be used for autodetection without a ROM present.
68	*/
69	#define T_RAM_OFFSET 0x1800
70
71	/*
72	* All of the registers are allocated 32 bytes of address space, except
73	* for the data register (read/write to/from the 5380 in pseudo-DMA mode)
74	*/
75	#define T_CONTROL_REG_OFFSET 0x1c00 /* rw */
76	#define T_CR_INT 0x10 /* Enable interrupts */
77	#define T_CR_CT 0x02 /* Reset watchdog timer */
78
79	#define T_STATUS_REG_OFFSET 0x1c20 /* ro */
80	#define T_ST_BOOT 0x80 /* Boot switch */
81	#define T_ST_S3 0x40 /* User settable switches, */
82	#define T_ST_S2 0x20 /* read 0 when switch is on, 1 off */
83	#define T_ST_S1 0x10
84	#define T_ST_PS2 0x08 /* Set for Microchannel 228 */
85	#define T_ST_RDY 0x04 /* 5380 DRQ */
86	#define T_ST_TIM 0x02 /* indicates 40us watchdog timer fired */
87	#define T_ST_ZERO 0x01 /* Always zero */
88
89	#define T_5380_OFFSET 0x1d00 /* 8 registers here, see NCR5380.h */
90
91	#define T_DATA_REG_OFFSET 0x1e00 /* rw 512 bytes long */
92
93	#ifndef ASM
94	static int t128_abort(Scsi_Cmnd *);
95	static int t128_biosparam(struct scsi_device , struct block_device ,
96	sector_t, int*);
97	static int t128_detect(Scsi_Host_Template *);
98	static int t128_queue_command(Scsi_Cmnd , void (done)(Scsi_Cmnd *));
99	static int t128_host_reset(Scsi_Cmnd *);
100	static int t128_bus_reset(Scsi_Cmnd *);
101	static int t128_device_reset(Scsi_Cmnd *);
102
103	#ifndef CMD_PER_LUN
104	#define CMD_PER_LUN 2
105	#endif
106
107	#ifndef CAN_QUEUE
108	#define CAN_QUEUE 32
109	#endif
110
111	#ifndef HOSTS_C
112
113	#define NCR5380_implementation_fields \
114	void __iomem *base
115
116	#define NCR5380_local_declare() \
117	void __iomem *base
118
119	#define NCR5380_setup(instance) \
120	base = ((struct NCR5380_hostdata *)(instance->hostdata))->base
121
122	#define T128_address(reg) (base + T_5380_OFFSET + ((reg) * 0x20))
123
124	#if !(TDEBUG & TDEBUG_TRANSFER)
125	#define NCR5380_read(reg) readb(T128_address(reg))
126	#define NCR5380_write(reg, value) writeb((value),(T128_address(reg)))
127	#else
128	#define NCR5380_read(reg) \
129	(((unsigned char) printk("scsi%d : read register %d at address %08x\n"\
130	, instance->hostno, (reg), T128_address(reg))), readb(T128_address(reg)))
131
132	#define NCR5380_write(reg, value) { \
133	printk("scsi%d : write %02x to register %d at address %08x\n", \
134	instance->hostno, (value), (reg), T128_address(reg)); \
135	writeb((value), (T128_address(reg))); \
136	}
137	#endif
138
139	#define NCR5380_intr t128_intr
140	#define do_NCR5380_intr do_t128_intr
141	#define NCR5380_queue_command t128_queue_command
142	#define NCR5380_abort t128_abort
143	#define NCR5380_host_reset t128_host_reset
144	#define NCR5380_device_reset t128_device_reset
145	#define NCR5380_bus_reset t128_bus_reset
146	#define NCR5380_proc_info t128_proc_info
147
148	/* 15 14 12 10 7 5 3
149	1101 0100 1010 1000 */
150
151	#define T128_IRQS 0xc4a8
152
153	#endif /* else def HOSTS_C */
154	#endif /* ndef ASM */
155	#endif /* T128_H */