[linux-2.6-block.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_implementation_fields	\
	unsigned ctrl;			\
	void __iomem *base;		\
	void __iomem *dma

#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 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, 0,
			  "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 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		= 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
1da177e4	33
8b801ead RK	34	#define NCR5380_implementation_fields \
	35	unsigned ctrl; \
	36	void __iomem *base; \
	37	void __iomem *dma
	38
1da177e4 LT	39	#include "../NCR5380.h"
	40
	41	void cumanascsi_setup(char str, int ints)
	42	{
	43	}
	44
	45	const char cumanascsi_info(struct Scsi_Host spnt)
	46	{
	47	return "";
	48	}
	49
8b801ead RK	50	#define CTRL 0x16fc
	51	#define STAT 0x2004
	52	#define L(v) (((v)<<16)\|((v) & 0x0000ffff))
	53	#define H(v) (((v)>>16)\|((v) & 0xffff0000))
1da177e4 LT	54
1da177e4 LT	55	static inline int
8b801ead	56	NCR5380_pwrite(struct Scsi_Host host, unsigned char addr, int len)
1da177e4	57	{
1da177e4	58	unsigned long *laddr;
8b801ead	59	void __iomem *dma = priv(host)->dma + 0x2000;
1da177e4 LT	60
	61	if(!len) return 0;
	62
8b801ead	63	writeb(0x02, priv(host)->base + CTRL);
1da177e4 LT	64	laddr = (unsigned long *)addr;
	65	while(len >= 32)
	66	{
8b801ead	67	unsigned int status;
1da177e4	68	unsigned long v;
8b801ead	69	status = readb(priv(host)->base + STAT);
1da177e4 LT	70	if(status & 0x80)
	71	goto end;
	72	if(!(status & 0x40))
	73	continue;
8b801ead RK	74	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	75	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	76	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	77	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	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);
1da177e4 LT	82	len -= 32;
	83	if(len == 0)
	84	break;
	85	}
	86
	87	addr = (unsigned char *)laddr;
8b801ead RK	88	writeb(0x12, priv(host)->base + CTRL);
8b801ead RK	89
1da177e4 LT	90	while(len > 0)
1da177e4 LT	91	{
8b801ead RK	92	unsigned int status;
8b801ead RK	93	status = readb(priv(host)->base + STAT);
1da177e4 LT	94	if(status & 0x80)
	95	goto end;
	96	if(status & 0x40)
	97	{
8b801ead	98	writeb(*addr++, dma);
1da177e4 LT	99	if(--len == 0)
	100	break;
	101	}
	102
8b801ead	103	status = readb(priv(host)->base + STAT);
1da177e4 LT	104	if(status & 0x80)
	105	goto end;
	106	if(status & 0x40)
	107	{
8b801ead	108	writeb(*addr++, dma);
1da177e4 LT	109	if(--len == 0)
	110	break;
	111	}
	112	}
	113	end:
8b801ead	114	writeb(priv(host)->ctrl \| 0x40, priv(host)->base + CTRL);
1da177e4 LT	115	return len;
	116	}
	117
	118	static inline int
8b801ead	119	NCR5380_pread(struct Scsi_Host host, unsigned char addr, int len)
1da177e4	120	{
1da177e4	121	unsigned long *laddr;
8b801ead	122	void __iomem *dma = priv(host)->dma + 0x2000;
1da177e4 LT	123
	124	if(!len) return 0;
	125
8b801ead	126	writeb(0x00, priv(host)->base + CTRL);
1da177e4 LT	127	laddr = (unsigned long *)addr;
	128	while(len >= 32)
	129	{
8b801ead RK	130	unsigned int status;
8b801ead RK	131	status = readb(priv(host)->base + STAT);
1da177e4 LT	132	if(status & 0x80)
	133	goto end;
	134	if(!(status & 0x40))
	135	continue;
8b801ead RK	136	*laddr++ = readw(dma) \| (readw(dma) << 16);
	137	*laddr++ = readw(dma) \| (readw(dma) << 16);
	138	*laddr++ = readw(dma) \| (readw(dma) << 16);
	139	*laddr++ = readw(dma) \| (readw(dma) << 16);
	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);
1da177e4 LT	144	len -= 32;
	145	if(len == 0)
	146	break;
	147	}
	148
	149	addr = (unsigned char *)laddr;
8b801ead RK	150	writeb(0x10, priv(host)->base + CTRL);
8b801ead RK	151
1da177e4 LT	152	while(len > 0)
1da177e4 LT	153	{
8b801ead RK	154	unsigned int status;
8b801ead RK	155	status = readb(priv(host)->base + STAT);
1da177e4 LT	156	if(status & 0x80)
	157	goto end;
	158	if(status & 0x40)
	159	{
8b801ead	160	*addr++ = readb(dma);
1da177e4 LT	161	if(--len == 0)
	162	break;
	163	}
	164
8b801ead	165	status = readb(priv(host)->base + STAT);
1da177e4 LT	166	if(status & 0x80)
	167	goto end;
	168	if(status & 0x40)
	169	{
8b801ead	170	*addr++ = readb(dma);
1da177e4 LT	171	if(--len == 0)
	172	break;
	173	}
	174	}
	175	end:
8b801ead	176	writeb(priv(host)->ctrl \| 0x40, priv(host)->base + CTRL);
1da177e4 LT	177	return len;
	178	}
	179
8b801ead RK	180	static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
	181	{
	182	void __iomem *base = priv(host)->base;
	183	unsigned char val;
1da177e4	184
8b801ead	185	writeb(0, base + CTRL);
1da177e4	186
8b801ead	187	val = readb(base + 0x2100 + (reg << 2));
1da177e4	188
8b801ead RK	189	priv(host)->ctrl = 0x40;
8b801ead RK	190	writeb(0x40, base + CTRL);
1da177e4	191
8b801ead	192	return val;
1da177e4 LT	193	}
1da177e4 LT	194
8b801ead	195	static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
1da177e4	196	{
8b801ead	197	void __iomem *base = priv(host)->base;
1da177e4	198
8b801ead	199	writeb(0, base + CTRL);
1da177e4	200
8b801ead RK	201	writeb(value, base + 0x2100 + (reg << 2));
	202
	203	priv(host)->ctrl = 0x40;
	204	writeb(0x40, base + CTRL);
	205	}
1da177e4 LT	206
	207	#include "../NCR5380.c"
	208
d0be4a7d	209	static struct scsi_host_template cumanascsi_template = {
1da177e4 LT	210	.module = THIS_MODULE,
	211	.name = "Cumana 16-bit SCSI",
	212	.info = cumanascsi_info,
	213	.queuecommand = cumanascsi_queue_command,
	214	.eh_abort_handler = NCR5380_abort,
1da177e4	215	.eh_bus_reset_handler = NCR5380_bus_reset,
1da177e4 LT	216	.can_queue = 16,
	217	.this_id = 7,
	218	.sg_tablesize = SG_ALL,
	219	.cmd_per_lun = 2,
1da177e4 LT	220	.use_clustering = DISABLE_CLUSTERING,
	221	.proc_name = "CumanaSCSI-1",
	222	};
	223
6f039790 GKH	224	static int cumanascsi1_probe(struct expansion_card *ec,
6f039790 GKH	225	const struct ecard_id *id)
1da177e4 LT	226	{
1da177e4 LT	227	struct Scsi_Host *host;
8b801ead	228	int ret;
1da177e4	229
8b801ead RK	230	ret = ecard_request_resources(ec);
8b801ead RK	231	if (ret)
1da177e4 LT	232	goto out;
1da177e4 LT	233
8b801ead RK	234	host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
	235	if (!host) {
	236	ret = -ENOMEM;
	237	goto out_release;
	238	}
	239
	240	priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
	241	ecard_resource_len(ec, ECARD_RES_IOCSLOW));
	242	priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
	243	ecard_resource_len(ec, ECARD_RES_MEMC));
	244	if (!priv(host)->base \|\| !priv(host)->dma) {
	245	ret = -ENOMEM;
	246	goto out_unmap;
	247	}
	248
1da177e4 LT	249	host->irq = ec->irq;
	250
	251	NCR5380_init(host, 0);
	252
8b801ead RK	253	priv(host)->ctrl = 0;
	254	writeb(0, priv(host)->base + CTRL);
	255
1da177e4 LT	256	host->n_io_port = 255;
	257	if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
	258	ret = -EBUSY;
8b801ead	259	goto out_unmap;
1da177e4 LT	260	}
1da177e4 LT	261
4909cc2b	262	ret = request_irq(host->irq, cumanascsi_intr, 0,
1da177e4 LT	263	"CumanaSCSI-1", host);
	264	if (ret) {
	265	printk("scsi%d: IRQ%d not free: %d\n",
	266	host->host_no, host->irq, ret);
8b801ead	267	goto out_unmap;
1da177e4 LT	268	}
	269
	270	printk("scsi%d: at port 0x%08lx irq %d",
	271	host->host_no, host->io_port, host->irq);
	272	printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
	273	host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
	274	printk("\nscsi%d:", host->host_no);
	275	NCR5380_print_options(host);
	276	printk("\n");
	277
	278	ret = scsi_add_host(host, &ec->dev);
	279	if (ret)
	280	goto out_free_irq;
	281
	282	scsi_scan_host(host);
	283	goto out;
	284
	285	out_free_irq:
	286	free_irq(host->irq, host);
8b801ead RK	287	out_unmap:
	288	iounmap(priv(host)->base);
	289	iounmap(priv(host)->dma);
1da177e4	290	scsi_host_put(host);
8b801ead RK	291	out_release:
8b801ead RK	292	ecard_release_resources(ec);
1da177e4 LT	293	out:
	294	return ret;
	295	}
	296
6f039790	297	static void cumanascsi1_remove(struct expansion_card *ec)
1da177e4 LT	298	{
	299	struct Scsi_Host *host = ecard_get_drvdata(ec);
	300
	301	ecard_set_drvdata(ec, NULL);
	302
	303	scsi_remove_host(host);
	304	free_irq(host->irq, host);
	305	NCR5380_exit(host);
8b801ead RK	306	iounmap(priv(host)->base);
8b801ead RK	307	iounmap(priv(host)->dma);
1da177e4	308	scsi_host_put(host);
8b801ead	309	ecard_release_resources(ec);
1da177e4 LT	310	}
	311
	312	static const struct ecard_id cumanascsi1_cids[] = {
	313	{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
	314	{ 0xffff, 0xffff }
	315	};
	316
	317	static struct ecard_driver cumanascsi1_driver = {
	318	.probe = cumanascsi1_probe,
6f039790	319	.remove = cumanascsi1_remove,
1da177e4 LT	320	.id_table = cumanascsi1_cids,
	321	.drv = {
	322	.name = "cumanascsi1",
	323	},
	324	};
	325
	326	static int __init cumanascsi_init(void)
	327	{
	328	return ecard_register_driver(&cumanascsi1_driver);
	329	}
	330
	331	static void __exit cumanascsi_exit(void)
	332	{
	333	ecard_remove_driver(&cumanascsi1_driver);
	334	}
	335
	336	module_init(cumanascsi_init);
	337	module_exit(cumanascsi_exit);
	338
	339	MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
	340	MODULE_LICENSE("GPL");