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

#define PSEUDO_DMA

/*
 * Trantor T128/T128F/T228 driver
 *	Note : architecturally, the T100 and T130 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
 *
 * 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
 */

/*
 * The card is detected and initialized in one of several ways : 
 * 1.  Autoprobe (default) - since the board is memory mapped, 
 *     a BIOS signature is scanned for to locate the registers.
 *     An interrupt is triggered to autoprobe for the interrupt
 *     line.
 *
 * 2.  With command line overrides - t128=address,irq may be 
 *     used on the LILO command line to override the defaults.
 *
 * 3.  With the T128_OVERRIDE compile time define.  This is 
 *     specified as an array of address, irq tuples.  Ie, for
 *     one board at the default 0xcc000 address, IRQ5, I could say 
 *     -DT128_OVERRIDE={{0xcc000, 5}}
 *	
 *     Note that if the override methods are used, place holders must
 *     be specified for other boards in the system.
 * 
 * T128/T128F jumper/dipswitch settings (note : on my sample, the switches 
 * were epoxy'd shut, meaning I couldn't change the 0xcc000 base address) :
 *
 * T128    Sw7 Sw8 Sw6 = 0ws Sw5 = boot 
 * T128F   Sw6 Sw7 Sw5 = 0ws Sw4 = boot Sw8 = floppy disable
 * cc000   off off      
 * c8000   off on
 * dc000   on  off
 * d8000   on  on
 *
 * 
 * Interrupts 
 * There is a 12 pin jumper block, jp1, numbered as follows : 
 *   T128 (JP1)  	 T128F (J5)
 * 2 4 6 8 10 12	11 9  7 5 3 1
 * 1 3 5 7 9  11	12 10 8 6 4 2
 *
 * 3   2-4
 * 5   1-3
 * 7   3-5
 * T128F only 
 * 10 8-10
 * 12 7-9
 * 14 10-12
 * 15 9-11
 */
 
#include <linux/signal.h>
#include <linux/io.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/delay.h>

#include <scsi/scsi_host.h>
#include "t128.h"
#define AUTOPROBE_IRQ
#include "NCR5380.h"

static struct override {
    unsigned long address;
    int irq;
} overrides
#ifdef T128_OVERRIDE
    [] __initdata = T128_OVERRIDE;
#else
    [4] __initdata = {{0, IRQ_AUTO}, {0, IRQ_AUTO},
        {0 ,IRQ_AUTO}, {0, IRQ_AUTO}};
#endif

#define NO_OVERRIDES ARRAY_SIZE(overrides)

static struct base {
    unsigned int address;
    int noauto;
} bases[] __initdata = {
    { 0xcc000, 0}, { 0xc8000, 0}, { 0xdc000, 0}, { 0xd8000, 0}
};

#define NO_BASES ARRAY_SIZE(bases)

static struct signature {
    const char *string;
    int offset;
} signatures[] __initdata = {
{"TSROM: SCSI BIOS, Version 1.12", 0x36},
};

#define NO_SIGNATURES ARRAY_SIZE(signatures)

#ifndef MODULE
/*
 * Function : t128_setup(char *str, int *ints)
 *
 * Purpose : LILO command line initialization of the overrides array,
 * 
 * Inputs : str - unused, ints - array of integer parameters with ints[0]
 *	equal to the number of ints.
 *
 */

static int __init t128_setup(char *str)
{
	static int commandline_current;
    int i;
    int ints[10];

    get_options(str, ARRAY_SIZE(ints), ints);
    if (ints[0] != 2) 
	printk("t128_setup : usage t128=address,irq\n");
    else 
	if (commandline_current < NO_OVERRIDES) {
	    overrides[commandline_current].address = ints[1];
	    overrides[commandline_current].irq = ints[2];
	    for (i = 0; i < NO_BASES; ++i)
		if (bases[i].address == ints[1]) {
		    bases[i].noauto = 1;
		    break;
		}
	    ++commandline_current;
	}
    return 1;
}

__setup("t128=", t128_setup);
#endif

/* 
 * Function : int t128_detect(struct scsi_host_template * tpnt)
 *
 * Purpose : detects and initializes T128,T128F, or T228 controllers
 *	that were autoprobed, overridden on the LILO command line, 
 *	or specified at compile time.
 *
 * Inputs : tpnt - template for this SCSI adapter.
 * 
 * Returns : 1 if a host adapter was found, 0 if not.
 *
 */

static int __init t128_detect(struct scsi_host_template *tpnt)
{
	static int current_override, current_base;
    struct Scsi_Host *instance;
    unsigned long base;
    void __iomem *p;
    int sig, count;

    for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
	base = 0;
	p = NULL;

	if (overrides[current_override].address) {
	    base = overrides[current_override].address;
	    p = ioremap(bases[current_base].address, 0x2000);
	    if (!p)
		base = 0;
	} else 
	    for (; !base && (current_base < NO_BASES); ++current_base) {
		dprintk(NDEBUG_INIT, "t128: probing address 0x%08x\n",
		        bases[current_base].address);
		if (bases[current_base].noauto)
			continue;
		p = ioremap(bases[current_base].address, 0x2000);
		if (!p)
			continue;
		for (sig = 0; sig < NO_SIGNATURES; ++sig) 
		    if (check_signature(p + signatures[sig].offset,
					signatures[sig].string,
					strlen(signatures[sig].string))) {
			base = bases[current_base].address;
			dprintk(NDEBUG_INIT, "t128: detected board\n");
			goto found;
		    }
		iounmap(p);
	    }

	dprintk(NDEBUG_INIT, "t128: base = 0x%08x\n", (unsigned int)base);

	if (!base)
	    break;

found:
	instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
	if(instance == NULL)
		break;
		
	instance->base = base;
	((struct NCR5380_hostdata *)instance->hostdata)->base = p;

	NCR5380_init(instance, 0);

	NCR5380_maybe_reset_bus(instance);

	if (overrides[current_override].irq != IRQ_AUTO)
	    instance->irq = overrides[current_override].irq;
	else 
	    instance->irq = NCR5380_probe_irq(instance, T128_IRQS);

	/* Compatibility with documented NCR5380 kernel parameters */
	if (instance->irq == 255)
		instance->irq = NO_IRQ;

	if (instance->irq != NO_IRQ)
	    if (request_irq(instance->irq, t128_intr, 0, "t128",
			    instance)) {
		printk("scsi%d : IRQ%d not free, interrupts disabled\n", 
		    instance->host_no, instance->irq);
		instance->irq = NO_IRQ;
	    } 

	if (instance->irq == NO_IRQ) {
	    printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
	    printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
	}

	dprintk(NDEBUG_INIT, "scsi%d: irq = %d\n",
	        instance->host_no, instance->irq);

	++current_override;
	++count;
    }
    return count;
}

static int t128_release(struct Scsi_Host *shost)
{
	struct NCR5380_hostdata *hostdata = shost_priv(shost);

	if (shost->irq != NO_IRQ)
		free_irq(shost->irq, shost);
	NCR5380_exit(shost);
	scsi_unregister(shost);
	iounmap(hostdata->base);
	return 0;
}

/*
 * Function : int t128_biosparam(Disk * disk, struct block_device *dev, int *ip)
 *
 * Purpose : Generates a BIOS / DOS compatible H-C-S mapping for 
 *	the specified device / size.
 * 
 * Inputs : size = size of device in sectors (512 bytes), dev = block device
 *	major / minor, ip[] = {heads, sectors, cylinders}  
 *
 * Returns : always 0 (success), initializes ip
 *	
 */

/* 
 * XXX Most SCSI boards use this mapping, I could be incorrect.  Some one
 * using hard disks on a trantor should verify that this mapping corresponds
 * to that used by the BIOS / ASPI driver by running the linux fdisk program
 * and matching the H_C_S coordinates to what DOS uses.
 */

static int t128_biosparam(struct scsi_device *sdev, struct block_device *bdev,
                          sector_t capacity, int *ip)
{
  ip[0] = 64;
  ip[1] = 32;
  ip[2] = capacity >> 11;
  return 0;
}

/*
 * Function : int NCR5380_pread (struct Scsi_Host *instance, 
 *	unsigned char *dst, int len)
 *
 * Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to 
 *	dst
 * 
 * Inputs : dst = destination, len = length in bytes
 *
 * Returns : 0 on success, non zero on a failure such as a watchdog 
 * 	timeout.
 */

static inline int
NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
{
	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	void __iomem *reg, *base = hostdata->base;
    unsigned char *d = dst;
    register int i = len;

    reg = base + T_DATA_REG_OFFSET;

#if 0
    for (; i; --i) {
	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
#else
    while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
    for (; i; --i) {
#endif
	*d++ = readb(reg);
    }

    if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	unsigned char tmp;
	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	tmp = readb(foo);
	writeb(tmp | T_CR_CT, foo);
	writeb(tmp, foo);
	printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
	    instance->host_no);
	return -1;
    } else
	return 0;
}

/*
 * Function : int NCR5380_pwrite (struct Scsi_Host *instance, 
 *	unsigned char *src, int len)
 *
 * Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
 *	src
 * 
 * Inputs : src = source, len = length in bytes
 *
 * Returns : 0 on success, non zero on a failure such as a watchdog 
 * 	timeout.
 */

static inline int
NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
{
	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	void __iomem *reg, *base = hostdata->base;
    unsigned char *s = src;
    register int i = len;

    reg = base + T_DATA_REG_OFFSET;

#if 0
    for (; i; --i) {
	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
#else
    while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
    for (; i; --i) {
#endif
	writeb(*s++, reg);
    }

    if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	unsigned char tmp;
	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	tmp = readb(foo);
	writeb(tmp | T_CR_CT, foo);
	writeb(tmp, foo);
	printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
	    instance->host_no);
	return -1;
    } else 
	return 0;
}

MODULE_LICENSE("GPL");

#include "NCR5380.c"

static struct scsi_host_template driver_template = {
	.name           = "Trantor T128/T128F/T228",
	.detect         = t128_detect,
	.release        = t128_release,
	.proc_name      = "t128",
	.show_info      = t128_show_info,
	.write_info     = t128_write_info,
	.info           = t128_info,
	.queuecommand   = t128_queue_command,
	.eh_abort_handler = t128_abort,
	.eh_bus_reset_handler    = t128_bus_reset,
	.bios_param     = t128_biosparam,
	.can_queue      = CAN_QUEUE,
        .this_id        = 7,
	.sg_tablesize   = SG_ALL,
	.cmd_per_lun    = CMD_PER_LUN,
	.use_clustering = DISABLE_CLUSTERING,
};
#include "scsi_module.c"
Commit	Line	Data
1da177e4 LT	1	#define PSEUDO_DMA
	2
	3	/*
	4	* Trantor T128/T128F/T228 driver
	5	* Note : architecturally, the T100 and T130 are different and won't
	6	* work
	7	*
	8	* Copyright 1993, Drew Eckhardt
	9	* Visionary Computing
	10	* (Unix and Linux consulting and custom programming)
	11	* drew@colorado.edu
	12	* +1 (303) 440-4894
	13	*
1da177e4 LT	14	* For more information, please consult
	15	*
	16	* Trantor Systems, Ltd.
	17	* T128/T128F/T228 SCSI Host Adapter
	18	* Hardware Specifications
	19	*
	20	* Trantor Systems, Ltd.
	21	* 5415 Randall Place
	22	* Fremont, CA 94538
	23	* 1+ (415) 770-1400, FAX 1+ (415) 770-9910
1da177e4 LT	24	*/
	25
	26	/*
1da177e4 LT	27	* The card is detected and initialized in one of several ways :
	28	* 1. Autoprobe (default) - since the board is memory mapped,
	29	* a BIOS signature is scanned for to locate the registers.
	30	* An interrupt is triggered to autoprobe for the interrupt
	31	* line.
	32	*
	33	* 2. With command line overrides - t128=address,irq may be
	34	* used on the LILO command line to override the defaults.
	35	*
	36	* 3. With the T128_OVERRIDE compile time define. This is
	37	* specified as an array of address, irq tuples. Ie, for
	38	* one board at the default 0xcc000 address, IRQ5, I could say
	39	* -DT128_OVERRIDE={{0xcc000, 5}}
	40	*
	41	* Note that if the override methods are used, place holders must
	42	* be specified for other boards in the system.
	43	*
	44	* T128/T128F jumper/dipswitch settings (note : on my sample, the switches
	45	* were epoxy'd shut, meaning I couldn't change the 0xcc000 base address) :
	46	*
	47	* T128 Sw7 Sw8 Sw6 = 0ws Sw5 = boot
	48	* T128F Sw6 Sw7 Sw5 = 0ws Sw4 = boot Sw8 = floppy disable
	49	* cc000 off off
	50	* c8000 off on
	51	* dc000 on off
	52	* d8000 on on
	53	*
	54	*
	55	* Interrupts
	56	* There is a 12 pin jumper block, jp1, numbered as follows :
	57	* T128 (JP1) T128F (J5)
	58	* 2 4 6 8 10 12 11 9 7 5 3 1
	59	* 1 3 5 7 9 11 12 10 8 6 4 2
	60	*
	61	* 3 2-4
	62	* 5 1-3
	63	* 7 3-5
	64	* T128F only
	65	* 10 8-10
	66	* 12 7-9
	67	* 14 10-12
	68	* 15 9-11
	69	*/
	70
1da177e4	71	#include <linux/signal.h>
53d5ed62	72	#include <linux/io.h>
1da177e4 LT	73	#include <linux/blkdev.h>
	74	#include <linux/interrupt.h>
	75	#include <linux/stat.h>
	76	#include <linux/init.h>
	77	#include <linux/module.h>
	78	#include <linux/delay.h>
	79
1da177e4 LT	80	#include <scsi/scsi_host.h>
	81	#include "t128.h"
	82	#define AUTOPROBE_IRQ
	83	#include "NCR5380.h"
	84
	85	static struct override {
	86	unsigned long address;
	87	int irq;
6391a113	88	} overrides
1da177e4 LT	89	#ifdef T128_OVERRIDE
	90	[] __initdata = T128_OVERRIDE;
	91	#else
6391a113	92	[4] __initdata = {{0, IRQ_AUTO}, {0, IRQ_AUTO},
1da177e4 LT	93	{0 ,IRQ_AUTO}, {0, IRQ_AUTO}};
	94	#endif
	95
6391a113	96	#define NO_OVERRIDES ARRAY_SIZE(overrides)
1da177e4 LT	97
	98	static struct base {
	99	unsigned int address;
	100	int noauto;
	101	} bases[] __initdata = {
	102	{ 0xcc000, 0}, { 0xc8000, 0}, { 0xdc000, 0}, { 0xd8000, 0}
	103	};
	104
6391a113	105	#define NO_BASES ARRAY_SIZE(bases)
1da177e4 LT	106
	107	static struct signature {
	108	const char *string;
	109	int offset;
	110	} signatures[] __initdata = {
	111	{"TSROM: SCSI BIOS, Version 1.12", 0x36},
	112	};
	113
6391a113	114	#define NO_SIGNATURES ARRAY_SIZE(signatures)
1da177e4	115
925e4610	116	#ifndef MODULE
1da177e4 LT	117	/*
	118	* Function : t128_setup(char str, int ints)
	119	*
	120	* Purpose : LILO command line initialization of the overrides array,
	121	*
	122	* Inputs : str - unused, ints - array of integer parameters with ints[0]
	123	* equal to the number of ints.
	124	*
	125	*/
	126
925e4610 FT	127	static int __init t128_setup(char *str)
925e4610 FT	128	{
d5f7e65d	129	static int commandline_current;
1da177e4	130	int i;
925e4610 FT	131	int ints[10];
	132
	133	get_options(str, ARRAY_SIZE(ints), ints);
1da177e4 LT	134	if (ints[0] != 2)
	135	printk("t128_setup : usage t128=address,irq\n");
	136	else
	137	if (commandline_current < NO_OVERRIDES) {
	138	overrides[commandline_current].address = ints[1];
	139	overrides[commandline_current].irq = ints[2];
	140	for (i = 0; i < NO_BASES; ++i)
	141	if (bases[i].address == ints[1]) {
	142	bases[i].noauto = 1;
	143	break;
	144	}
	145	++commandline_current;
	146	}
925e4610	147	return 1;
1da177e4 LT	148	}
1da177e4 LT	149
925e4610 FT	150	__setup("t128=", t128_setup);
	151	#endif
	152
1da177e4	153	/*
d0be4a7d	154	* Function : int t128_detect(struct scsi_host_template * tpnt)
1da177e4 LT	155	*
	156	* Purpose : detects and initializes T128,T128F, or T228 controllers
	157	* that were autoprobed, overridden on the LILO command line,
	158	* or specified at compile time.
	159	*
	160	* Inputs : tpnt - template for this SCSI adapter.
	161	*
	162	* Returns : 1 if a host adapter was found, 0 if not.
	163	*
	164	*/
	165
ed8b9e7f FT	166	static int __init t128_detect(struct scsi_host_template *tpnt)
ed8b9e7f FT	167	{
d5f7e65d	168	static int current_override, current_base;
1da177e4 LT	169	struct Scsi_Host *instance;
	170	unsigned long base;
	171	void __iomem *p;
	172	int sig, count;
	173
1da177e4 LT	174	for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
	175	base = 0;
	176	p = NULL;
	177
	178	if (overrides[current_override].address) {
	179	base = overrides[current_override].address;
	180	p = ioremap(bases[current_base].address, 0x2000);
	181	if (!p)
	182	base = 0;
	183	} else
	184	for (; !base && (current_base < NO_BASES); ++current_base) {
2f7dba9f FT	185	dprintk(NDEBUG_INIT, "t128: probing address 0x%08x\n",
2f7dba9f FT	186	bases[current_base].address);
1da177e4 LT	187	if (bases[current_base].noauto)
	188	continue;
	189	p = ioremap(bases[current_base].address, 0x2000);
	190	if (!p)
	191	continue;
	192	for (sig = 0; sig < NO_SIGNATURES; ++sig)
	193	if (check_signature(p + signatures[sig].offset,
	194	signatures[sig].string,
	195	strlen(signatures[sig].string))) {
	196	base = bases[current_base].address;
2f7dba9f	197	dprintk(NDEBUG_INIT, "t128: detected board\n");
1da177e4 LT	198	goto found;
	199	}
	200	iounmap(p);
	201	}
	202
2f7dba9f	203	dprintk(NDEBUG_INIT, "t128: base = 0x%08x\n", (unsigned int)base);
1da177e4 LT	204
	205	if (!base)
	206	break;
	207
	208	found:
	209	instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
	210	if(instance == NULL)
	211	break;
	212
	213	instance->base = base;
	214	((struct NCR5380_hostdata *)instance->hostdata)->base = p;
	215
	216	NCR5380_init(instance, 0);
	217
b6488f97 FT	218	NCR5380_maybe_reset_bus(instance);
b6488f97 FT	219
1da177e4 LT	220	if (overrides[current_override].irq != IRQ_AUTO)
	221	instance->irq = overrides[current_override].irq;
	222	else
	223	instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
	224
22f5f10d FT	225	/* Compatibility with documented NCR5380 kernel parameters */
	226	if (instance->irq == 255)
	227	instance->irq = NO_IRQ;
	228
	229	if (instance->irq != NO_IRQ)
4909cc2b	230	if (request_irq(instance->irq, t128_intr, 0, "t128",
1e641664	231	instance)) {
1da177e4 LT	232	printk("scsi%d : IRQ%d not free, interrupts disabled\n",
1da177e4 LT	233	instance->host_no, instance->irq);
22f5f10d	234	instance->irq = NO_IRQ;
1da177e4 LT	235	}
1da177e4 LT	236
22f5f10d	237	if (instance->irq == NO_IRQ) {
1da177e4 LT	238	printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
	239	printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
	240	}
	241
2f7dba9f FT	242	dprintk(NDEBUG_INIT, "scsi%d: irq = %d\n",
2f7dba9f FT	243	instance->host_no, instance->irq);
1da177e4	244
1da177e4 LT	245	++current_override;
	246	++count;
	247	}
	248	return count;
	249	}
	250
	251	static int t128_release(struct Scsi_Host *shost)
	252	{
54d8fe44 FT	253	struct NCR5380_hostdata *hostdata = shost_priv(shost);
54d8fe44 FT	254
22f5f10d	255	if (shost->irq != NO_IRQ)
1e641664	256	free_irq(shost->irq, shost);
1da177e4	257	NCR5380_exit(shost);
1da177e4	258	scsi_unregister(shost);
54d8fe44	259	iounmap(hostdata->base);
1da177e4 LT	260	return 0;
	261	}
	262
	263	/*
	264	* Function : int t128_biosparam(Disk * disk, struct block_device dev, int ip)
	265	*
	266	* Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
	267	* the specified device / size.
	268	*
	269	* Inputs : size = size of device in sectors (512 bytes), dev = block device
	270	* major / minor, ip[] = {heads, sectors, cylinders}
	271	*
	272	* Returns : always 0 (success), initializes ip
	273	*
	274	*/
	275
	276	/*
	277	* XXX Most SCSI boards use this mapping, I could be incorrect. Some one
	278	* using hard disks on a trantor should verify that this mapping corresponds
	279	* to that used by the BIOS / ASPI driver by running the linux fdisk program
	280	* and matching the H_C_S coordinates to what DOS uses.
	281	*/
	282
ed8b9e7f FT	283	static int t128_biosparam(struct scsi_device sdev, struct block_device bdev,
ed8b9e7f FT	284	sector_t capacity, int *ip)
1da177e4 LT	285	{
	286	ip[0] = 64;
	287	ip[1] = 32;
	288	ip[2] = capacity >> 11;
	289	return 0;
	290	}
	291
	292	/*
	293	* Function : int NCR5380_pread (struct Scsi_Host *instance,
	294	* unsigned char *dst, int len)
	295	*
	296	* Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
	297	* dst
	298	*
	299	* Inputs : dst = destination, len = length in bytes
	300	*
	301	* Returns : 0 on success, non zero on a failure such as a watchdog
	302	* timeout.
	303	*/
	304
54d8fe44 FT	305	static inline int
	306	NCR5380_pread(struct Scsi_Host instance, unsigned char dst, int len)
	307	{
	308	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	309	void __iomem reg, base = hostdata->base;
1da177e4 LT	310	unsigned char *d = dst;
	311	register int i = len;
	312
1da177e4 LT	313	reg = base + T_DATA_REG_OFFSET;
	314
	315	#if 0
	316	for (; i; --i) {
	317	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	318	#else
	319	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	320	for (; i; --i) {
	321	#endif
	322	*d++ = readb(reg);
	323	}
	324
	325	if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	326	unsigned char tmp;
	327	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	328	tmp = readb(foo);
	329	writeb(tmp \| T_CR_CT, foo);
	330	writeb(tmp, foo);
	331	printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
	332	instance->host_no);
	333	return -1;
	334	} else
	335	return 0;
	336	}
	337
	338	/*
	339	* Function : int NCR5380_pwrite (struct Scsi_Host *instance,
	340	* unsigned char *src, int len)
	341	*
	342	* Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
	343	* src
	344	*
	345	* Inputs : src = source, len = length in bytes
	346	*
	347	* Returns : 0 on success, non zero on a failure such as a watchdog
	348	* timeout.
	349	*/
	350
54d8fe44 FT	351	static inline int
	352	NCR5380_pwrite(struct Scsi_Host instance, unsigned char src, int len)
	353	{
	354	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	355	void __iomem reg, base = hostdata->base;
1da177e4 LT	356	unsigned char *s = src;
	357	register int i = len;
	358
1da177e4 LT	359	reg = base + T_DATA_REG_OFFSET;
	360
	361	#if 0
	362	for (; i; --i) {
	363	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	364	#else
	365	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	366	for (; i; --i) {
	367	#endif
	368	writeb(*s++, reg);
	369	}
	370
	371	if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	372	unsigned char tmp;
	373	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	374	tmp = readb(foo);
	375	writeb(tmp \| T_CR_CT, foo);
	376	writeb(tmp, foo);
	377	printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
	378	instance->host_no);
	379	return -1;
	380	} else
	381	return 0;
	382	}
	383
	384	MODULE_LICENSE("GPL");
	385
	386	#include "NCR5380.c"
	387
d0be4a7d	388	static struct scsi_host_template driver_template = {
1da177e4 LT	389	.name = "Trantor T128/T128F/T228",
	390	.detect = t128_detect,
	391	.release = t128_release,
4d3d2a54 FT	392	.proc_name = "t128",
	393	.show_info = t128_show_info,
	394	.write_info = t128_write_info,
8c32513b	395	.info = t128_info,
1da177e4 LT	396	.queuecommand = t128_queue_command,
	397	.eh_abort_handler = t128_abort,
	398	.eh_bus_reset_handler = t128_bus_reset,
1da177e4 LT	399	.bios_param = t128_biosparam,
	400	.can_queue = CAN_QUEUE,
	401	.this_id = 7,
	402	.sg_tablesize = SG_ALL,
	403	.cmd_per_lun = CMD_PER_LUN,
	404	.use_clustering = DISABLE_CLUSTERING,
	405	};
	406	#include "scsi_module.c"