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

/*
 * 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/io.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/module.h>

#include <scsi/scsi_host.h>
#include "t128.h"
#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)
		goto out_unmap;

	instance->base = base;
	((struct NCR5380_hostdata *)instance->hostdata)->base = p;

	if (NCR5380_init(instance, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP))
		goto out_unregister;

	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;

out_unregister:
	scsi_unregister(instance);
out_unmap:
	iounmap(p);
	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 t128_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 t128_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 t128_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 t128_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",
	.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		= 32,
	.this_id		= 7,
	.sg_tablesize		= SG_ALL,
	.cmd_per_lun		= 2,
	.use_clustering		= DISABLE_CLUSTERING,
	.cmd_size		= NCR5380_CMD_SIZE,
	.max_sectors		= 128,
};
#include "scsi_module.c"
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Trantor T128/T128F/T228 driver
	3	* Note : architecturally, the T100 and T130 are different and won't
	4	* work
	5	*
	6	* Copyright 1993, Drew Eckhardt
	7	* Visionary Computing
	8	* (Unix and Linux consulting and custom programming)
	9	* drew@colorado.edu
	10	* +1 (303) 440-4894
	11	*
1da177e4 LT	12	* For more information, please consult
	13	*
	14	* Trantor Systems, Ltd.
	15	* T128/T128F/T228 SCSI Host Adapter
	16	* Hardware Specifications
	17	*
	18	* Trantor Systems, Ltd.
	19	* 5415 Randall Place
	20	* Fremont, CA 94538
	21	* 1+ (415) 770-1400, FAX 1+ (415) 770-9910
1da177e4 LT	22	*/
	23
	24	/*
1da177e4 LT	25	* The card is detected and initialized in one of several ways :
	26	* 1. Autoprobe (default) - since the board is memory mapped,
	27	* a BIOS signature is scanned for to locate the registers.
	28	* An interrupt is triggered to autoprobe for the interrupt
	29	* line.
	30	*
	31	* 2. With command line overrides - t128=address,irq may be
	32	* used on the LILO command line to override the defaults.
	33	*
	34	* 3. With the T128_OVERRIDE compile time define. This is
	35	* specified as an array of address, irq tuples. Ie, for
	36	* one board at the default 0xcc000 address, IRQ5, I could say
	37	* -DT128_OVERRIDE={{0xcc000, 5}}
	38	*
	39	* Note that if the override methods are used, place holders must
	40	* be specified for other boards in the system.
	41	*
	42	* T128/T128F jumper/dipswitch settings (note : on my sample, the switches
	43	* were epoxy'd shut, meaning I couldn't change the 0xcc000 base address) :
	44	*
	45	* T128 Sw7 Sw8 Sw6 = 0ws Sw5 = boot
	46	* T128F Sw6 Sw7 Sw5 = 0ws Sw4 = boot Sw8 = floppy disable
	47	* cc000 off off
	48	* c8000 off on
	49	* dc000 on off
	50	* d8000 on on
	51	*
	52	*
	53	* Interrupts
	54	* There is a 12 pin jumper block, jp1, numbered as follows :
	55	* T128 (JP1) T128F (J5)
	56	* 2 4 6 8 10 12 11 9 7 5 3 1
	57	* 1 3 5 7 9 11 12 10 8 6 4 2
	58	*
	59	* 3 2-4
	60	* 5 1-3
	61	* 7 3-5
	62	* T128F only
	63	* 10 8-10
	64	* 12 7-9
	65	* 14 10-12
	66	* 15 9-11
	67	*/
	68
53d5ed62	69	#include <linux/io.h>
1da177e4 LT	70	#include <linux/blkdev.h>
1da177e4 LT	71	#include <linux/interrupt.h>
1da177e4 LT	72	#include <linux/init.h>
1da177e4 LT	73	#include <linux/module.h>
1da177e4	74
1da177e4 LT	75	#include <scsi/scsi_host.h>
1da177e4 LT	76	#include "t128.h"
1da177e4 LT	77	#include "NCR5380.h"
	78
	79	static struct override {
	80	unsigned long address;
	81	int irq;
6391a113	82	} overrides
1da177e4 LT	83	#ifdef T128_OVERRIDE
	84	[] __initdata = T128_OVERRIDE;
	85	#else
6391a113	86	[4] __initdata = {{0, IRQ_AUTO}, {0, IRQ_AUTO},
1da177e4 LT	87	{0 ,IRQ_AUTO}, {0, IRQ_AUTO}};
	88	#endif
	89
6391a113	90	#define NO_OVERRIDES ARRAY_SIZE(overrides)
1da177e4 LT	91
	92	static struct base {
	93	unsigned int address;
	94	int noauto;
	95	} bases[] __initdata = {
	96	{ 0xcc000, 0}, { 0xc8000, 0}, { 0xdc000, 0}, { 0xd8000, 0}
	97	};
	98
6391a113	99	#define NO_BASES ARRAY_SIZE(bases)
1da177e4 LT	100
	101	static struct signature {
	102	const char *string;
	103	int offset;
	104	} signatures[] __initdata = {
	105	{"TSROM: SCSI BIOS, Version 1.12", 0x36},
	106	};
	107
6391a113	108	#define NO_SIGNATURES ARRAY_SIZE(signatures)
1da177e4	109
925e4610	110	#ifndef MODULE
1da177e4 LT	111	/*
	112	* Function : t128_setup(char str, int ints)
	113	*
	114	* Purpose : LILO command line initialization of the overrides array,
	115	*
	116	* Inputs : str - unused, ints - array of integer parameters with ints[0]
	117	* equal to the number of ints.
	118	*
	119	*/
	120
925e4610 FT	121	static int __init t128_setup(char *str)
925e4610 FT	122	{
d5f7e65d	123	static int commandline_current;
1da177e4	124	int i;
925e4610 FT	125	int ints[10];
	126
	127	get_options(str, ARRAY_SIZE(ints), ints);
1da177e4 LT	128	if (ints[0] != 2)
	129	printk("t128_setup : usage t128=address,irq\n");
	130	else
	131	if (commandline_current < NO_OVERRIDES) {
	132	overrides[commandline_current].address = ints[1];
	133	overrides[commandline_current].irq = ints[2];
	134	for (i = 0; i < NO_BASES; ++i)
	135	if (bases[i].address == ints[1]) {
	136	bases[i].noauto = 1;
	137	break;
	138	}
	139	++commandline_current;
	140	}
925e4610	141	return 1;
1da177e4 LT	142	}
1da177e4 LT	143
925e4610 FT	144	__setup("t128=", t128_setup);
	145	#endif
	146
1da177e4	147	/*
d0be4a7d	148	* Function : int t128_detect(struct scsi_host_template * tpnt)
1da177e4 LT	149	*
	150	* Purpose : detects and initializes T128,T128F, or T228 controllers
	151	* that were autoprobed, overridden on the LILO command line,
	152	* or specified at compile time.
	153	*
	154	* Inputs : tpnt - template for this SCSI adapter.
	155	*
	156	* Returns : 1 if a host adapter was found, 0 if not.
	157	*
	158	*/
	159
ed8b9e7f FT	160	static int __init t128_detect(struct scsi_host_template *tpnt)
ed8b9e7f FT	161	{
d5f7e65d	162	static int current_override, current_base;
1da177e4 LT	163	struct Scsi_Host *instance;
	164	unsigned long base;
	165	void __iomem *p;
	166	int sig, count;
	167
1da177e4 LT	168	for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
	169	base = 0;
	170	p = NULL;
	171
	172	if (overrides[current_override].address) {
	173	base = overrides[current_override].address;
	174	p = ioremap(bases[current_base].address, 0x2000);
	175	if (!p)
	176	base = 0;
	177	} else
	178	for (; !base && (current_base < NO_BASES); ++current_base) {
2f7dba9f FT	179	dprintk(NDEBUG_INIT, "t128: probing address 0x%08x\n",
2f7dba9f FT	180	bases[current_base].address);
1da177e4 LT	181	if (bases[current_base].noauto)
	182	continue;
	183	p = ioremap(bases[current_base].address, 0x2000);
	184	if (!p)
	185	continue;
	186	for (sig = 0; sig < NO_SIGNATURES; ++sig)
	187	if (check_signature(p + signatures[sig].offset,
	188	signatures[sig].string,
	189	strlen(signatures[sig].string))) {
	190	base = bases[current_base].address;
2f7dba9f	191	dprintk(NDEBUG_INIT, "t128: detected board\n");
1da177e4 LT	192	goto found;
	193	}
	194	iounmap(p);
	195	}
	196
2f7dba9f	197	dprintk(NDEBUG_INIT, "t128: base = 0x%08x\n", (unsigned int)base);
1da177e4 LT	198
	199	if (!base)
	200	break;
	201
	202	found:
	203	instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
	204	if(instance == NULL)
0ad0eff9 FT	205	goto out_unmap;
0ad0eff9 FT	206
1da177e4 LT	207	instance->base = base;
	208	((struct NCR5380_hostdata *)instance->hostdata)->base = p;
	209
8053b0ee	210	if (NCR5380_init(instance, FLAG_DMA_FIXUP \| FLAG_LATE_DMA_SETUP))
0ad0eff9	211	goto out_unregister;
1da177e4	212
b6488f97 FT	213	NCR5380_maybe_reset_bus(instance);
b6488f97 FT	214
1da177e4 LT	215	if (overrides[current_override].irq != IRQ_AUTO)
	216	instance->irq = overrides[current_override].irq;
	217	else
	218	instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
	219
22f5f10d FT	220	/* Compatibility with documented NCR5380 kernel parameters */
	221	if (instance->irq == 255)
	222	instance->irq = NO_IRQ;
	223
	224	if (instance->irq != NO_IRQ)
4909cc2b	225	if (request_irq(instance->irq, t128_intr, 0, "t128",
1e641664	226	instance)) {
1da177e4 LT	227	printk("scsi%d : IRQ%d not free, interrupts disabled\n",
1da177e4 LT	228	instance->host_no, instance->irq);
22f5f10d	229	instance->irq = NO_IRQ;
1da177e4 LT	230	}
1da177e4 LT	231
22f5f10d	232	if (instance->irq == NO_IRQ) {
1da177e4 LT	233	printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
	234	printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
	235	}
	236
2f7dba9f FT	237	dprintk(NDEBUG_INIT, "scsi%d: irq = %d\n",
2f7dba9f FT	238	instance->host_no, instance->irq);
1da177e4	239
1da177e4 LT	240	++current_override;
	241	++count;
	242	}
	243	return count;
0ad0eff9 FT	244
	245	out_unregister:
	246	scsi_unregister(instance);
	247	out_unmap:
	248	iounmap(p);
	249	return count;
1da177e4 LT	250	}
	251
	252	static int t128_release(struct Scsi_Host *shost)
	253	{
54d8fe44 FT	254	struct NCR5380_hostdata *hostdata = shost_priv(shost);
54d8fe44 FT	255
22f5f10d	256	if (shost->irq != NO_IRQ)
1e641664	257	free_irq(shost->irq, shost);
1da177e4	258	NCR5380_exit(shost);
1da177e4	259	scsi_unregister(shost);
54d8fe44	260	iounmap(hostdata->base);
1da177e4 LT	261	return 0;
	262	}
	263
	264	/*
	265	* Function : int t128_biosparam(Disk * disk, struct block_device dev, int ip)
	266	*
	267	* Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
	268	* the specified device / size.
	269	*
	270	* Inputs : size = size of device in sectors (512 bytes), dev = block device
	271	* major / minor, ip[] = {heads, sectors, cylinders}
	272	*
	273	* Returns : always 0 (success), initializes ip
	274	*
	275	*/
	276
	277	/*
	278	* XXX Most SCSI boards use this mapping, I could be incorrect. Some one
	279	* using hard disks on a trantor should verify that this mapping corresponds
	280	* to that used by the BIOS / ASPI driver by running the linux fdisk program
	281	* and matching the H_C_S coordinates to what DOS uses.
	282	*/
	283
ed8b9e7f FT	284	static int t128_biosparam(struct scsi_device sdev, struct block_device bdev,
ed8b9e7f FT	285	sector_t capacity, int *ip)
1da177e4 LT	286	{
	287	ip[0] = 64;
	288	ip[1] = 32;
	289	ip[2] = capacity >> 11;
	290	return 0;
	291	}
	292
	293	/*
6c4b88ca	294	* Function : int t128_pread (struct Scsi_Host *instance,
1da177e4 LT	295	* unsigned char *dst, int len)
	296	*
	297	* Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
	298	* dst
	299	*
	300	* Inputs : dst = destination, len = length in bytes
	301	*
	302	* Returns : 0 on success, non zero on a failure such as a watchdog
	303	* timeout.
	304	*/
	305
6c4b88ca FT	306	static inline int t128_pread(struct Scsi_Host *instance,
6c4b88ca FT	307	unsigned char *dst, int len)
54d8fe44 FT	308	{
	309	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	310	void __iomem reg, base = hostdata->base;
1da177e4 LT	311	unsigned char *d = dst;
	312	register int i = len;
	313
1da177e4 LT	314	reg = base + T_DATA_REG_OFFSET;
	315
	316	#if 0
	317	for (; i; --i) {
	318	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	319	#else
	320	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	321	for (; i; --i) {
	322	#endif
	323	*d++ = readb(reg);
	324	}
	325
	326	if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	327	unsigned char tmp;
	328	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	329	tmp = readb(foo);
	330	writeb(tmp \| T_CR_CT, foo);
	331	writeb(tmp, foo);
	332	printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
	333	instance->host_no);
	334	return -1;
	335	} else
	336	return 0;
	337	}
	338
	339	/*
6c4b88ca	340	* Function : int t128_pwrite (struct Scsi_Host *instance,
1da177e4 LT	341	* unsigned char *src, int len)
	342	*
	343	* Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
	344	* src
	345	*
	346	* Inputs : src = source, len = length in bytes
	347	*
	348	* Returns : 0 on success, non zero on a failure such as a watchdog
	349	* timeout.
	350	*/
	351
6c4b88ca FT	352	static inline int t128_pwrite(struct Scsi_Host *instance,
6c4b88ca FT	353	unsigned char *src, int len)
54d8fe44 FT	354	{
	355	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	356	void __iomem reg, base = hostdata->base;
1da177e4 LT	357	unsigned char *s = src;
	358	register int i = len;
	359
1da177e4 LT	360	reg = base + T_DATA_REG_OFFSET;
	361
	362	#if 0
	363	for (; i; --i) {
	364	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	365	#else
	366	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	367	for (; i; --i) {
	368	#endif
	369	writeb(*s++, reg);
	370	}
	371
	372	if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	373	unsigned char tmp;
	374	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	375	tmp = readb(foo);
	376	writeb(tmp \| T_CR_CT, foo);
	377	writeb(tmp, foo);
	378	printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
	379	instance->host_no);
	380	return -1;
	381	} else
	382	return 0;
	383	}
	384
	385	MODULE_LICENSE("GPL");
	386
	387	#include "NCR5380.c"
	388
d0be4a7d	389	static struct scsi_host_template driver_template = {
aa2e2cb1 FT	390	.name = "Trantor T128/T128F/T228",
	391	.detect = t128_detect,
	392	.release = t128_release,
	393	.proc_name = "t128",
aa2e2cb1 FT	394	.info = t128_info,
	395	.queuecommand = t128_queue_command,
	396	.eh_abort_handler = t128_abort,
	397	.eh_bus_reset_handler = t128_bus_reset,
	398	.bios_param = t128_biosparam,
	399	.can_queue = 32,
	400	.this_id = 7,
	401	.sg_tablesize = SG_ALL,
	402	.cmd_per_lun = 2,
	403	.use_clustering = DISABLE_CLUSTERING,
32b26a10	404	.cmd_size = NCR5380_CMD_SIZE,
0a4e3612	405	.max_sectors = 128,
1da177e4 LT	406	};
1da177e4 LT	407	#include "scsi_module.c"