[linux-2.6-block.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/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"
#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)
		goto out_unmap;

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

	if (NCR5380_init(instance, 0))
		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 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		= 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	#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
53d5ed62	71	#include <linux/io.h>
1da177e4 LT	72	#include <linux/blkdev.h>
1da177e4 LT	73	#include <linux/interrupt.h>
1da177e4 LT	74	#include <linux/init.h>
1da177e4 LT	75	#include <linux/module.h>
1da177e4	76
1da177e4 LT	77	#include <scsi/scsi_host.h>
	78	#include "t128.h"
	79	#define AUTOPROBE_IRQ
	80	#include "NCR5380.h"
	81
	82	static struct override {
	83	unsigned long address;
	84	int irq;
6391a113	85	} overrides
1da177e4 LT	86	#ifdef T128_OVERRIDE
	87	[] __initdata = T128_OVERRIDE;
	88	#else
6391a113	89	[4] __initdata = {{0, IRQ_AUTO}, {0, IRQ_AUTO},
1da177e4 LT	90	{0 ,IRQ_AUTO}, {0, IRQ_AUTO}};
	91	#endif
	92
6391a113	93	#define NO_OVERRIDES ARRAY_SIZE(overrides)
1da177e4 LT	94
	95	static struct base {
	96	unsigned int address;
	97	int noauto;
	98	} bases[] __initdata = {
	99	{ 0xcc000, 0}, { 0xc8000, 0}, { 0xdc000, 0}, { 0xd8000, 0}
	100	};
	101
6391a113	102	#define NO_BASES ARRAY_SIZE(bases)
1da177e4 LT	103
	104	static struct signature {
	105	const char *string;
	106	int offset;
	107	} signatures[] __initdata = {
	108	{"TSROM: SCSI BIOS, Version 1.12", 0x36},
	109	};
	110
6391a113	111	#define NO_SIGNATURES ARRAY_SIZE(signatures)
1da177e4	112
925e4610	113	#ifndef MODULE
1da177e4 LT	114	/*
	115	* Function : t128_setup(char str, int ints)
	116	*
	117	* Purpose : LILO command line initialization of the overrides array,
	118	*
	119	* Inputs : str - unused, ints - array of integer parameters with ints[0]
	120	* equal to the number of ints.
	121	*
	122	*/
	123
925e4610 FT	124	static int __init t128_setup(char *str)
925e4610 FT	125	{
d5f7e65d	126	static int commandline_current;
1da177e4	127	int i;
925e4610 FT	128	int ints[10];
	129
	130	get_options(str, ARRAY_SIZE(ints), ints);
1da177e4 LT	131	if (ints[0] != 2)
	132	printk("t128_setup : usage t128=address,irq\n");
	133	else
	134	if (commandline_current < NO_OVERRIDES) {
	135	overrides[commandline_current].address = ints[1];
	136	overrides[commandline_current].irq = ints[2];
	137	for (i = 0; i < NO_BASES; ++i)
	138	if (bases[i].address == ints[1]) {
	139	bases[i].noauto = 1;
	140	break;
	141	}
	142	++commandline_current;
	143	}
925e4610	144	return 1;
1da177e4 LT	145	}
1da177e4 LT	146
925e4610 FT	147	__setup("t128=", t128_setup);
	148	#endif
	149
1da177e4	150	/*
d0be4a7d	151	* Function : int t128_detect(struct scsi_host_template * tpnt)
1da177e4 LT	152	*
	153	* Purpose : detects and initializes T128,T128F, or T228 controllers
	154	* that were autoprobed, overridden on the LILO command line,
	155	* or specified at compile time.
	156	*
	157	* Inputs : tpnt - template for this SCSI adapter.
	158	*
	159	* Returns : 1 if a host adapter was found, 0 if not.
	160	*
	161	*/
	162
ed8b9e7f FT	163	static int __init t128_detect(struct scsi_host_template *tpnt)
ed8b9e7f FT	164	{
d5f7e65d	165	static int current_override, current_base;
1da177e4 LT	166	struct Scsi_Host *instance;
	167	unsigned long base;
	168	void __iomem *p;
	169	int sig, count;
	170
1da177e4 LT	171	for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
	172	base = 0;
	173	p = NULL;
	174
	175	if (overrides[current_override].address) {
	176	base = overrides[current_override].address;
	177	p = ioremap(bases[current_base].address, 0x2000);
	178	if (!p)
	179	base = 0;
	180	} else
	181	for (; !base && (current_base < NO_BASES); ++current_base) {
2f7dba9f FT	182	dprintk(NDEBUG_INIT, "t128: probing address 0x%08x\n",
2f7dba9f FT	183	bases[current_base].address);
1da177e4 LT	184	if (bases[current_base].noauto)
	185	continue;
	186	p = ioremap(bases[current_base].address, 0x2000);
	187	if (!p)
	188	continue;
	189	for (sig = 0; sig < NO_SIGNATURES; ++sig)
	190	if (check_signature(p + signatures[sig].offset,
	191	signatures[sig].string,
	192	strlen(signatures[sig].string))) {
	193	base = bases[current_base].address;
2f7dba9f	194	dprintk(NDEBUG_INIT, "t128: detected board\n");
1da177e4 LT	195	goto found;
	196	}
	197	iounmap(p);
	198	}
	199
2f7dba9f	200	dprintk(NDEBUG_INIT, "t128: base = 0x%08x\n", (unsigned int)base);
1da177e4 LT	201
	202	if (!base)
	203	break;
	204
	205	found:
	206	instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
	207	if(instance == NULL)
0ad0eff9 FT	208	goto out_unmap;
0ad0eff9 FT	209
1da177e4 LT	210	instance->base = base;
	211	((struct NCR5380_hostdata *)instance->hostdata)->base = p;
	212
0ad0eff9 FT	213	if (NCR5380_init(instance, 0))
0ad0eff9 FT	214	goto out_unregister;
1da177e4	215
b6488f97 FT	216	NCR5380_maybe_reset_bus(instance);
b6488f97 FT	217
1da177e4 LT	218	if (overrides[current_override].irq != IRQ_AUTO)
	219	instance->irq = overrides[current_override].irq;
	220	else
	221	instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
	222
22f5f10d FT	223	/* Compatibility with documented NCR5380 kernel parameters */
	224	if (instance->irq == 255)
	225	instance->irq = NO_IRQ;
	226
	227	if (instance->irq != NO_IRQ)
4909cc2b	228	if (request_irq(instance->irq, t128_intr, 0, "t128",
1e641664	229	instance)) {
1da177e4 LT	230	printk("scsi%d : IRQ%d not free, interrupts disabled\n",
1da177e4 LT	231	instance->host_no, instance->irq);
22f5f10d	232	instance->irq = NO_IRQ;
1da177e4 LT	233	}
1da177e4 LT	234
22f5f10d	235	if (instance->irq == NO_IRQ) {
1da177e4 LT	236	printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
	237	printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
	238	}
	239
2f7dba9f FT	240	dprintk(NDEBUG_INIT, "scsi%d: irq = %d\n",
2f7dba9f FT	241	instance->host_no, instance->irq);
1da177e4	242
1da177e4 LT	243	++current_override;
	244	++count;
	245	}
	246	return count;
0ad0eff9 FT	247
	248	out_unregister:
	249	scsi_unregister(instance);
	250	out_unmap:
	251	iounmap(p);
	252	return count;
1da177e4 LT	253	}
	254
	255	static int t128_release(struct Scsi_Host *shost)
	256	{
54d8fe44 FT	257	struct NCR5380_hostdata *hostdata = shost_priv(shost);
54d8fe44 FT	258
22f5f10d	259	if (shost->irq != NO_IRQ)
1e641664	260	free_irq(shost->irq, shost);
1da177e4	261	NCR5380_exit(shost);
1da177e4	262	scsi_unregister(shost);
54d8fe44	263	iounmap(hostdata->base);
1da177e4 LT	264	return 0;
	265	}
	266
	267	/*
	268	* Function : int t128_biosparam(Disk * disk, struct block_device dev, int ip)
	269	*
	270	* Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
	271	* the specified device / size.
	272	*
	273	* Inputs : size = size of device in sectors (512 bytes), dev = block device
	274	* major / minor, ip[] = {heads, sectors, cylinders}
	275	*
	276	* Returns : always 0 (success), initializes ip
	277	*
	278	*/
	279
	280	/*
	281	* XXX Most SCSI boards use this mapping, I could be incorrect. Some one
	282	* using hard disks on a trantor should verify that this mapping corresponds
	283	* to that used by the BIOS / ASPI driver by running the linux fdisk program
	284	* and matching the H_C_S coordinates to what DOS uses.
	285	*/
	286
ed8b9e7f FT	287	static int t128_biosparam(struct scsi_device sdev, struct block_device bdev,
ed8b9e7f FT	288	sector_t capacity, int *ip)
1da177e4 LT	289	{
	290	ip[0] = 64;
	291	ip[1] = 32;
	292	ip[2] = capacity >> 11;
	293	return 0;
	294	}
	295
	296	/*
	297	* Function : int NCR5380_pread (struct Scsi_Host *instance,
	298	* unsigned char *dst, int len)
	299	*
	300	* Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
	301	* dst
	302	*
	303	* Inputs : dst = destination, len = length in bytes
	304	*
	305	* Returns : 0 on success, non zero on a failure such as a watchdog
	306	* timeout.
	307	*/
	308
54d8fe44 FT	309	static inline int
	310	NCR5380_pread(struct Scsi_Host instance, unsigned char dst, int len)
	311	{
	312	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	313	void __iomem reg, base = hostdata->base;
1da177e4 LT	314	unsigned char *d = dst;
	315	register int i = len;
	316
1da177e4 LT	317	reg = base + T_DATA_REG_OFFSET;
	318
	319	#if 0
	320	for (; i; --i) {
	321	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	322	#else
	323	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	324	for (; i; --i) {
	325	#endif
	326	*d++ = readb(reg);
	327	}
	328
	329	if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	330	unsigned char tmp;
	331	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	332	tmp = readb(foo);
	333	writeb(tmp \| T_CR_CT, foo);
	334	writeb(tmp, foo);
	335	printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
	336	instance->host_no);
	337	return -1;
	338	} else
	339	return 0;
	340	}
	341
	342	/*
	343	* Function : int NCR5380_pwrite (struct Scsi_Host *instance,
	344	* unsigned char *src, int len)
	345	*
	346	* Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
	347	* src
	348	*
	349	* Inputs : src = source, len = length in bytes
	350	*
	351	* Returns : 0 on success, non zero on a failure such as a watchdog
	352	* timeout.
	353	*/
	354
54d8fe44 FT	355	static inline int
	356	NCR5380_pwrite(struct Scsi_Host instance, unsigned char src, int len)
	357	{
	358	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	359	void __iomem reg, base = hostdata->base;
1da177e4 LT	360	unsigned char *s = src;
	361	register int i = len;
	362
1da177e4 LT	363	reg = base + T_DATA_REG_OFFSET;
	364
	365	#if 0
	366	for (; i; --i) {
	367	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	368	#else
	369	while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
	370	for (; i; --i) {
	371	#endif
	372	writeb(*s++, reg);
	373	}
	374
	375	if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
	376	unsigned char tmp;
	377	void __iomem *foo = base + T_CONTROL_REG_OFFSET;
	378	tmp = readb(foo);
	379	writeb(tmp \| T_CR_CT, foo);
	380	writeb(tmp, foo);
	381	printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
	382	instance->host_no);
	383	return -1;
	384	} else
	385	return 0;
	386	}
	387
	388	MODULE_LICENSE("GPL");
	389
	390	#include "NCR5380.c"
	391
d0be4a7d	392	static struct scsi_host_template driver_template = {
aa2e2cb1 FT	393	.name = "Trantor T128/T128F/T228",
	394	.detect = t128_detect,
	395	.release = t128_release,
	396	.proc_name = "t128",
	397	.show_info = t128_show_info,
	398	.write_info = t128_write_info,
	399	.info = t128_info,
	400	.queuecommand = t128_queue_command,
	401	.eh_abort_handler = t128_abort,
	402	.eh_bus_reset_handler = t128_bus_reset,
	403	.bios_param = t128_biosparam,
	404	.can_queue = 32,
	405	.this_id = 7,
	406	.sg_tablesize = SG_ALL,
	407	.cmd_per_lun = 2,
	408	.use_clustering = DISABLE_CLUSTERING,
32b26a10	409	.cmd_size = NCR5380_CMD_SIZE,
0a4e3612	410	.max_sectors = 128,
1da177e4 LT	411	};
1da177e4 LT	412	#include "scsi_module.c"