[deliverable/linux.git] / drivers / scsi / arm / cumana_1.c

/*
 * Generic Generic NCR5380 driver
 *
 * Copyright 1995-2002, Russell King
 */
#include <linux/module.h>
#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/blkdev.h>
#include <linux/init.h>

#include <asm/ecard.h>
#include <asm/io.h>

#include "../scsi.h"
#include <scsi/scsi_host.h>

#include <scsi/scsicam.h>

#define AUTOSENSE
#define PSEUDO_DMA

#define CUMANASCSI_PUBLIC_RELEASE 1

#define priv(host)			((struct NCR5380_hostdata *)(host)->hostdata)
#define NCR5380_local_declare()		struct Scsi_Host *_instance
#define NCR5380_setup(instance)		_instance = instance
#define NCR5380_read(reg)		cumanascsi_read(_instance, reg)
#define NCR5380_write(reg, value)	cumanascsi_write(_instance, reg, value)
#define NCR5380_intr			cumanascsi_intr
#define NCR5380_queue_command		cumanascsi_queue_command
#define NCR5380_proc_info		cumanascsi_proc_info

#define NCR5380_implementation_fields	\
	unsigned ctrl;			\
	void __iomem *base;		\
	void __iomem *dma

#define BOARD_NORMAL	0
#define BOARD_NCR53C400	1

#include "../NCR5380.h"

void cumanascsi_setup(char *str, int *ints)
{
}

const char *cumanascsi_info(struct Scsi_Host *spnt)
{
	return "";
}

#define CTRL	0x16fc
#define STAT	0x2004
#define L(v)	(((v)<<16)|((v) & 0x0000ffff))
#define H(v)	(((v)>>16)|((v) & 0xffff0000))

static inline int
NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
{
  unsigned long *laddr;
  void __iomem *dma = priv(host)->dma + 0x2000;

  if(!len) return 0;

  writeb(0x02, priv(host)->base + CTRL);
  laddr = (unsigned long *)addr;
  while(len >= 32)
  {
    unsigned int status;
    unsigned long v;
    status = readb(priv(host)->base + STAT);
    if(status & 0x80)
      goto end;
    if(!(status & 0x40))
      continue;
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    v=*laddr++; writew(L(v), dma); writew(H(v), dma);
    len -= 32;
    if(len == 0)
      break;
  }

  addr = (unsigned char *)laddr;
  writeb(0x12, priv(host)->base + CTRL);

  while(len > 0)
  {
    unsigned int status;
    status = readb(priv(host)->base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      writeb(*addr++, dma);
      if(--len == 0)
        break;
    }

    status = readb(priv(host)->base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      writeb(*addr++, dma);
      if(--len == 0)
        break;
    }
  }
end:
  writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
  return len;
}

static inline int
NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
{
  unsigned long *laddr;
  void __iomem *dma = priv(host)->dma + 0x2000;

  if(!len) return 0;

  writeb(0x00, priv(host)->base + CTRL);
  laddr = (unsigned long *)addr;
  while(len >= 32)
  {
    unsigned int status;
    status = readb(priv(host)->base + STAT);
    if(status & 0x80)
      goto end;
    if(!(status & 0x40))
      continue;
    *laddr++ = readw(dma) | (readw(dma) << 16);
    *laddr++ = readw(dma) | (readw(dma) << 16);
    *laddr++ = readw(dma) | (readw(dma) << 16);
    *laddr++ = readw(dma) | (readw(dma) << 16);
    *laddr++ = readw(dma) | (readw(dma) << 16);
    *laddr++ = readw(dma) | (readw(dma) << 16);
    *laddr++ = readw(dma) | (readw(dma) << 16);
    *laddr++ = readw(dma) | (readw(dma) << 16);
    len -= 32;
    if(len == 0)
      break;
  }

  addr = (unsigned char *)laddr;
  writeb(0x10, priv(host)->base + CTRL);

  while(len > 0)
  {
    unsigned int status;
    status = readb(priv(host)->base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      *addr++ = readb(dma);
      if(--len == 0)
        break;
    }

    status = readb(priv(host)->base + STAT);
    if(status & 0x80)
      goto end;
    if(status & 0x40)
    {
      *addr++ = readb(dma);
      if(--len == 0)
        break;
    }
  }
end:
  writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
  return len;
}

static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
{
	void __iomem *base = priv(host)->base;
	unsigned char val;

	writeb(0, base + CTRL);

	val = readb(base + 0x2100 + (reg << 2));

	priv(host)->ctrl = 0x40;
	writeb(0x40, base + CTRL);

	return val;
}

static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
{
	void __iomem *base = priv(host)->base;

	writeb(0, base + CTRL);

	writeb(value, base + 0x2100 + (reg << 2));

	priv(host)->ctrl = 0x40;
	writeb(0x40, base + CTRL);
}

#include "../NCR5380.c"

static struct scsi_host_template cumanascsi_template = {
	.module			= THIS_MODULE,
	.name			= "Cumana 16-bit SCSI",
	.info			= cumanascsi_info,
	.queuecommand		= cumanascsi_queue_command,
	.eh_abort_handler	= NCR5380_abort,
	.eh_bus_reset_handler	= NCR5380_bus_reset,
	.can_queue		= 16,
	.this_id		= 7,
	.sg_tablesize		= SG_ALL,
	.cmd_per_lun		= 2,
	.use_clustering		= DISABLE_CLUSTERING,
	.proc_name		= "CumanaSCSI-1",
};

static int __devinit
cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
{
	struct Scsi_Host *host;
	int ret;

	ret = ecard_request_resources(ec);
	if (ret)
		goto out;

	host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
	if (!host) {
		ret = -ENOMEM;
		goto out_release;
	}

	priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
				   ecard_resource_len(ec, ECARD_RES_IOCSLOW));
	priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
				  ecard_resource_len(ec, ECARD_RES_MEMC));
	if (!priv(host)->base || !priv(host)->dma) {
		ret = -ENOMEM;
		goto out_unmap;
	}

	host->irq = ec->irq;

	NCR5380_init(host, 0);

        priv(host)->ctrl = 0;
        writeb(0, priv(host)->base + CTRL);

	host->n_io_port = 255;
	if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
		ret = -EBUSY;
		goto out_unmap;
	}

	ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED,
			  "CumanaSCSI-1", host);
	if (ret) {
		printk("scsi%d: IRQ%d not free: %d\n",
		    host->host_no, host->irq, ret);
		goto out_unmap;
	}

	printk("scsi%d: at port 0x%08lx irq %d",
		host->host_no, host->io_port, host->irq);
	printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
		host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
	printk("\nscsi%d:", host->host_no);
	NCR5380_print_options(host);
	printk("\n");

	ret = scsi_add_host(host, &ec->dev);
	if (ret)
		goto out_free_irq;

	scsi_scan_host(host);
	goto out;

 out_free_irq:
	free_irq(host->irq, host);
 out_unmap:
	iounmap(priv(host)->base);
	iounmap(priv(host)->dma);
	scsi_host_put(host);
 out_release:
	ecard_release_resources(ec);
 out:
	return ret;
}

static void __devexit cumanascsi1_remove(struct expansion_card *ec)
{
	struct Scsi_Host *host = ecard_get_drvdata(ec);

	ecard_set_drvdata(ec, NULL);

	scsi_remove_host(host);
	free_irq(host->irq, host);
	NCR5380_exit(host);
	iounmap(priv(host)->base);
	iounmap(priv(host)->dma);
	scsi_host_put(host);
	ecard_release_resources(ec);
}

static const struct ecard_id cumanascsi1_cids[] = {
	{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
	{ 0xffff, 0xffff }
};

static struct ecard_driver cumanascsi1_driver = {
	.probe		= cumanascsi1_probe,
	.remove		= __devexit_p(cumanascsi1_remove),
	.id_table	= cumanascsi1_cids,
	.drv = {
		.name		= "cumanascsi1",
	},
};

static int __init cumanascsi_init(void)
{
	return ecard_register_driver(&cumanascsi1_driver);
}

static void __exit cumanascsi_exit(void)
{
	ecard_remove_driver(&cumanascsi1_driver);
}

module_init(cumanascsi_init);
module_exit(cumanascsi_exit);

MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Generic Generic NCR5380 driver
	3	*
	4	* Copyright 1995-2002, Russell King
	5	*/
	6	#include <linux/module.h>
	7	#include <linux/signal.h>
1da177e4 LT	8	#include <linux/ioport.h>
	9	#include <linux/delay.h>
	10	#include <linux/blkdev.h>
	11	#include <linux/init.h>
	12
	13	#include <asm/ecard.h>
	14	#include <asm/io.h>
1da177e4 LT	15
	16	#include "../scsi.h"
	17	#include <scsi/scsi_host.h>
	18
	19	#include <scsi/scsicam.h>
	20
	21	#define AUTOSENSE
	22	#define PSEUDO_DMA
	23
	24	#define CUMANASCSI_PUBLIC_RELEASE 1
	25
8b801ead	26	#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
1da177e4 LT	27	#define NCR5380_local_declare() struct Scsi_Host *_instance
	28	#define NCR5380_setup(instance) _instance = instance
	29	#define NCR5380_read(reg) cumanascsi_read(_instance, reg)
	30	#define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
	31	#define NCR5380_intr cumanascsi_intr
	32	#define NCR5380_queue_command cumanascsi_queue_command
	33	#define NCR5380_proc_info cumanascsi_proc_info
	34
8b801ead RK	35	#define NCR5380_implementation_fields \
	36	unsigned ctrl; \
	37	void __iomem *base; \
	38	void __iomem *dma
	39
1da177e4 LT	40	#define BOARD_NORMAL 0
	41	#define BOARD_NCR53C400 1
	42
	43	#include "../NCR5380.h"
	44
	45	void cumanascsi_setup(char str, int ints)
	46	{
	47	}
	48
	49	const char cumanascsi_info(struct Scsi_Host spnt)
	50	{
	51	return "";
	52	}
	53
8b801ead RK	54	#define CTRL 0x16fc
	55	#define STAT 0x2004
	56	#define L(v) (((v)<<16)\|((v) & 0x0000ffff))
	57	#define H(v) (((v)>>16)\|((v) & 0xffff0000))
1da177e4 LT	58
1da177e4 LT	59	static inline int
8b801ead	60	NCR5380_pwrite(struct Scsi_Host host, unsigned char addr, int len)
1da177e4	61	{
1da177e4	62	unsigned long *laddr;
8b801ead	63	void __iomem *dma = priv(host)->dma + 0x2000;
1da177e4 LT	64
	65	if(!len) return 0;
	66
8b801ead	67	writeb(0x02, priv(host)->base + CTRL);
1da177e4 LT	68	laddr = (unsigned long *)addr;
	69	while(len >= 32)
	70	{
8b801ead	71	unsigned int status;
1da177e4	72	unsigned long v;
8b801ead	73	status = readb(priv(host)->base + STAT);
1da177e4 LT	74	if(status & 0x80)
	75	goto end;
	76	if(!(status & 0x40))
	77	continue;
8b801ead RK	78	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	79	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	80	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	81	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	82	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	83	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	84	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	85	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
1da177e4 LT	86	len -= 32;
	87	if(len == 0)
	88	break;
	89	}
	90
	91	addr = (unsigned char *)laddr;
8b801ead RK	92	writeb(0x12, priv(host)->base + CTRL);
8b801ead RK	93
1da177e4 LT	94	while(len > 0)
1da177e4 LT	95	{
8b801ead RK	96	unsigned int status;
8b801ead RK	97	status = readb(priv(host)->base + STAT);
1da177e4 LT	98	if(status & 0x80)
	99	goto end;
	100	if(status & 0x40)
	101	{
8b801ead	102	writeb(*addr++, dma);
1da177e4 LT	103	if(--len == 0)
	104	break;
	105	}
	106
8b801ead	107	status = readb(priv(host)->base + STAT);
1da177e4 LT	108	if(status & 0x80)
	109	goto end;
	110	if(status & 0x40)
	111	{
8b801ead	112	writeb(*addr++, dma);
1da177e4 LT	113	if(--len == 0)
	114	break;
	115	}
	116	}
	117	end:
8b801ead	118	writeb(priv(host)->ctrl \| 0x40, priv(host)->base + CTRL);
1da177e4 LT	119	return len;
	120	}
	121
	122	static inline int
8b801ead	123	NCR5380_pread(struct Scsi_Host host, unsigned char addr, int len)
1da177e4	124	{
1da177e4	125	unsigned long *laddr;
8b801ead	126	void __iomem *dma = priv(host)->dma + 0x2000;
1da177e4 LT	127
	128	if(!len) return 0;
	129
8b801ead	130	writeb(0x00, priv(host)->base + CTRL);
1da177e4 LT	131	laddr = (unsigned long *)addr;
	132	while(len >= 32)
	133	{
8b801ead RK	134	unsigned int status;
8b801ead RK	135	status = readb(priv(host)->base + STAT);
1da177e4 LT	136	if(status & 0x80)
	137	goto end;
	138	if(!(status & 0x40))
	139	continue;
8b801ead RK	140	*laddr++ = readw(dma) \| (readw(dma) << 16);
	141	*laddr++ = readw(dma) \| (readw(dma) << 16);
	142	*laddr++ = readw(dma) \| (readw(dma) << 16);
	143	*laddr++ = readw(dma) \| (readw(dma) << 16);
	144	*laddr++ = readw(dma) \| (readw(dma) << 16);
	145	*laddr++ = readw(dma) \| (readw(dma) << 16);
	146	*laddr++ = readw(dma) \| (readw(dma) << 16);
	147	*laddr++ = readw(dma) \| (readw(dma) << 16);
1da177e4 LT	148	len -= 32;
	149	if(len == 0)
	150	break;
	151	}
	152
	153	addr = (unsigned char *)laddr;
8b801ead RK	154	writeb(0x10, priv(host)->base + CTRL);
8b801ead RK	155
1da177e4 LT	156	while(len > 0)
1da177e4 LT	157	{
8b801ead RK	158	unsigned int status;
8b801ead RK	159	status = readb(priv(host)->base + STAT);
1da177e4 LT	160	if(status & 0x80)
	161	goto end;
	162	if(status & 0x40)
	163	{
8b801ead	164	*addr++ = readb(dma);
1da177e4 LT	165	if(--len == 0)
	166	break;
	167	}
	168
8b801ead	169	status = readb(priv(host)->base + STAT);
1da177e4 LT	170	if(status & 0x80)
	171	goto end;
	172	if(status & 0x40)
	173	{
8b801ead	174	*addr++ = readb(dma);
1da177e4 LT	175	if(--len == 0)
	176	break;
	177	}
	178	}
	179	end:
8b801ead	180	writeb(priv(host)->ctrl \| 0x40, priv(host)->base + CTRL);
1da177e4 LT	181	return len;
	182	}
	183
8b801ead RK	184	static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
	185	{
	186	void __iomem *base = priv(host)->base;
	187	unsigned char val;
1da177e4	188
8b801ead	189	writeb(0, base + CTRL);
1da177e4	190
8b801ead	191	val = readb(base + 0x2100 + (reg << 2));
1da177e4	192
8b801ead RK	193	priv(host)->ctrl = 0x40;
8b801ead RK	194	writeb(0x40, base + CTRL);
1da177e4	195
8b801ead	196	return val;
1da177e4 LT	197	}
1da177e4 LT	198
8b801ead	199	static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
1da177e4	200	{
8b801ead	201	void __iomem *base = priv(host)->base;
1da177e4	202
8b801ead	203	writeb(0, base + CTRL);
1da177e4	204
8b801ead RK	205	writeb(value, base + 0x2100 + (reg << 2));
	206
	207	priv(host)->ctrl = 0x40;
	208	writeb(0x40, base + CTRL);
	209	}
1da177e4 LT	210
	211	#include "../NCR5380.c"
	212
d0be4a7d	213	static struct scsi_host_template cumanascsi_template = {
1da177e4 LT	214	.module = THIS_MODULE,
	215	.name = "Cumana 16-bit SCSI",
	216	.info = cumanascsi_info,
	217	.queuecommand = cumanascsi_queue_command,
	218	.eh_abort_handler = NCR5380_abort,
1da177e4	219	.eh_bus_reset_handler = NCR5380_bus_reset,
1da177e4 LT	220	.can_queue = 16,
	221	.this_id = 7,
	222	.sg_tablesize = SG_ALL,
	223	.cmd_per_lun = 2,
1da177e4 LT	224	.use_clustering = DISABLE_CLUSTERING,
	225	.proc_name = "CumanaSCSI-1",
	226	};
	227
	228	static int __devinit
	229	cumanascsi1_probe(struct expansion_card ec, const struct ecard_id id)
	230	{
	231	struct Scsi_Host *host;
8b801ead	232	int ret;
1da177e4	233
8b801ead RK	234	ret = ecard_request_resources(ec);
8b801ead RK	235	if (ret)
1da177e4 LT	236	goto out;
1da177e4 LT	237
8b801ead RK	238	host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
	239	if (!host) {
	240	ret = -ENOMEM;
	241	goto out_release;
	242	}
	243
	244	priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
	245	ecard_resource_len(ec, ECARD_RES_IOCSLOW));
	246	priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
	247	ecard_resource_len(ec, ECARD_RES_MEMC));
	248	if (!priv(host)->base \|\| !priv(host)->dma) {
	249	ret = -ENOMEM;
	250	goto out_unmap;
	251	}
	252
1da177e4 LT	253	host->irq = ec->irq;
	254
	255	NCR5380_init(host, 0);
	256
8b801ead RK	257	priv(host)->ctrl = 0;
	258	writeb(0, priv(host)->base + CTRL);
	259
1da177e4 LT	260	host->n_io_port = 255;
	261	if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
	262	ret = -EBUSY;
8b801ead	263	goto out_unmap;
1da177e4 LT	264	}
1da177e4 LT	265
1d6f359a	266	ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED,
1da177e4 LT	267	"CumanaSCSI-1", host);
	268	if (ret) {
	269	printk("scsi%d: IRQ%d not free: %d\n",
	270	host->host_no, host->irq, ret);
8b801ead	271	goto out_unmap;
1da177e4 LT	272	}
	273
	274	printk("scsi%d: at port 0x%08lx irq %d",
	275	host->host_no, host->io_port, host->irq);
	276	printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
	277	host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
	278	printk("\nscsi%d:", host->host_no);
	279	NCR5380_print_options(host);
	280	printk("\n");
	281
	282	ret = scsi_add_host(host, &ec->dev);
	283	if (ret)
	284	goto out_free_irq;
	285
	286	scsi_scan_host(host);
	287	goto out;
	288
	289	out_free_irq:
	290	free_irq(host->irq, host);
8b801ead RK	291	out_unmap:
	292	iounmap(priv(host)->base);
	293	iounmap(priv(host)->dma);
1da177e4	294	scsi_host_put(host);
8b801ead RK	295	out_release:
8b801ead RK	296	ecard_release_resources(ec);
1da177e4 LT	297	out:
	298	return ret;
	299	}
	300
	301	static void __devexit cumanascsi1_remove(struct expansion_card *ec)
	302	{
	303	struct Scsi_Host *host = ecard_get_drvdata(ec);
	304
	305	ecard_set_drvdata(ec, NULL);
	306
	307	scsi_remove_host(host);
	308	free_irq(host->irq, host);
	309	NCR5380_exit(host);
8b801ead RK	310	iounmap(priv(host)->base);
8b801ead RK	311	iounmap(priv(host)->dma);
1da177e4	312	scsi_host_put(host);
8b801ead	313	ecard_release_resources(ec);
1da177e4 LT	314	}
	315
	316	static const struct ecard_id cumanascsi1_cids[] = {
	317	{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
	318	{ 0xffff, 0xffff }
	319	};
	320
	321	static struct ecard_driver cumanascsi1_driver = {
	322	.probe = cumanascsi1_probe,
	323	.remove = __devexit_p(cumanascsi1_remove),
	324	.id_table = cumanascsi1_cids,
	325	.drv = {
	326	.name = "cumanascsi1",
	327	},
	328	};
	329
	330	static int __init cumanascsi_init(void)
	331	{
	332	return ecard_register_driver(&cumanascsi1_driver);
	333	}
	334
	335	static void __exit cumanascsi_exit(void)
	336	{
	337	ecard_remove_driver(&cumanascsi1_driver);
	338	}
	339
	340	module_init(cumanascsi_init);
	341	module_exit(cumanascsi_exit);
	342
	343	MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
	344	MODULE_LICENSE("GPL");