[mirror_ubuntu-bionic-kernel.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/scsi_host.h>

#include <scsi/scsicam.h>

#define PSEUDO_DMA

#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_info			cumanascsi_info

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

#include "../NCR5380.h"

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

#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;
	}

	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	15
1da177e4 LT	16	#include <scsi/scsi_host.h>
	17
	18	#include <scsi/scsicam.h>
	19
1da177e4 LT	20	#define PSEUDO_DMA
1da177e4 LT	21
8b801ead	22	#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
1da177e4 LT	23	#define NCR5380_local_declare() struct Scsi_Host *_instance
	24	#define NCR5380_setup(instance) _instance = instance
	25	#define NCR5380_read(reg) cumanascsi_read(_instance, reg)
	26	#define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
	27	#define NCR5380_intr cumanascsi_intr
	28	#define NCR5380_queue_command cumanascsi_queue_command
8c32513b	29	#define NCR5380_info cumanascsi_info
1da177e4	30
8b801ead RK	31	#define NCR5380_implementation_fields \
	32	unsigned ctrl; \
	33	void __iomem *base; \
	34	void __iomem *dma
	35
1da177e4 LT	36	#include "../NCR5380.h"
	37
	38	void cumanascsi_setup(char str, int ints)
	39	{
	40	}
	41
8b801ead RK	42	#define CTRL 0x16fc
	43	#define STAT 0x2004
	44	#define L(v) (((v)<<16)\|((v) & 0x0000ffff))
	45	#define H(v) (((v)>>16)\|((v) & 0xffff0000))
1da177e4 LT	46
1da177e4 LT	47	static inline int
8b801ead	48	NCR5380_pwrite(struct Scsi_Host host, unsigned char addr, int len)
1da177e4	49	{
1da177e4	50	unsigned long *laddr;
8b801ead	51	void __iomem *dma = priv(host)->dma + 0x2000;
1da177e4 LT	52
	53	if(!len) return 0;
	54
8b801ead	55	writeb(0x02, priv(host)->base + CTRL);
1da177e4 LT	56	laddr = (unsigned long *)addr;
	57	while(len >= 32)
	58	{
8b801ead	59	unsigned int status;
1da177e4	60	unsigned long v;
8b801ead	61	status = readb(priv(host)->base + STAT);
1da177e4 LT	62	if(status & 0x80)
	63	goto end;
	64	if(!(status & 0x40))
	65	continue;
8b801ead RK	66	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	67	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	68	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	69	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	70	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	71	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	72	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
	73	v=*laddr++; writew(L(v), dma); writew(H(v), dma);
1da177e4 LT	74	len -= 32;
	75	if(len == 0)
	76	break;
	77	}
	78
	79	addr = (unsigned char *)laddr;
8b801ead RK	80	writeb(0x12, priv(host)->base + CTRL);
8b801ead RK	81
1da177e4 LT	82	while(len > 0)
1da177e4 LT	83	{
8b801ead RK	84	unsigned int status;
8b801ead RK	85	status = readb(priv(host)->base + STAT);
1da177e4 LT	86	if(status & 0x80)
	87	goto end;
	88	if(status & 0x40)
	89	{
8b801ead	90	writeb(*addr++, dma);
1da177e4 LT	91	if(--len == 0)
	92	break;
	93	}
	94
8b801ead	95	status = readb(priv(host)->base + STAT);
1da177e4 LT	96	if(status & 0x80)
	97	goto end;
	98	if(status & 0x40)
	99	{
8b801ead	100	writeb(*addr++, dma);
1da177e4 LT	101	if(--len == 0)
	102	break;
	103	}
	104	}
	105	end:
8b801ead	106	writeb(priv(host)->ctrl \| 0x40, priv(host)->base + CTRL);
1da177e4 LT	107	return len;
	108	}
	109
	110	static inline int
8b801ead	111	NCR5380_pread(struct Scsi_Host host, unsigned char addr, int len)
1da177e4	112	{
1da177e4	113	unsigned long *laddr;
8b801ead	114	void __iomem *dma = priv(host)->dma + 0x2000;
1da177e4 LT	115
	116	if(!len) return 0;
	117
8b801ead	118	writeb(0x00, priv(host)->base + CTRL);
1da177e4 LT	119	laddr = (unsigned long *)addr;
	120	while(len >= 32)
	121	{
8b801ead RK	122	unsigned int status;
8b801ead RK	123	status = readb(priv(host)->base + STAT);
1da177e4 LT	124	if(status & 0x80)
	125	goto end;
	126	if(!(status & 0x40))
	127	continue;
8b801ead RK	128	*laddr++ = readw(dma) \| (readw(dma) << 16);
	129	*laddr++ = readw(dma) \| (readw(dma) << 16);
	130	*laddr++ = readw(dma) \| (readw(dma) << 16);
	131	*laddr++ = readw(dma) \| (readw(dma) << 16);
	132	*laddr++ = readw(dma) \| (readw(dma) << 16);
	133	*laddr++ = readw(dma) \| (readw(dma) << 16);
	134	*laddr++ = readw(dma) \| (readw(dma) << 16);
	135	*laddr++ = readw(dma) \| (readw(dma) << 16);
1da177e4 LT	136	len -= 32;
	137	if(len == 0)
	138	break;
	139	}
	140
	141	addr = (unsigned char *)laddr;
8b801ead RK	142	writeb(0x10, priv(host)->base + CTRL);
8b801ead RK	143
1da177e4 LT	144	while(len > 0)
1da177e4 LT	145	{
8b801ead RK	146	unsigned int status;
8b801ead RK	147	status = readb(priv(host)->base + STAT);
1da177e4 LT	148	if(status & 0x80)
	149	goto end;
	150	if(status & 0x40)
	151	{
8b801ead	152	*addr++ = readb(dma);
1da177e4 LT	153	if(--len == 0)
	154	break;
	155	}
	156
8b801ead	157	status = readb(priv(host)->base + STAT);
1da177e4 LT	158	if(status & 0x80)
	159	goto end;
	160	if(status & 0x40)
	161	{
8b801ead	162	*addr++ = readb(dma);
1da177e4 LT	163	if(--len == 0)
	164	break;
	165	}
	166	}
	167	end:
8b801ead	168	writeb(priv(host)->ctrl \| 0x40, priv(host)->base + CTRL);
1da177e4 LT	169	return len;
	170	}
	171
8b801ead RK	172	static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
	173	{
	174	void __iomem *base = priv(host)->base;
	175	unsigned char val;
1da177e4	176
8b801ead	177	writeb(0, base + CTRL);
1da177e4	178
8b801ead	179	val = readb(base + 0x2100 + (reg << 2));
1da177e4	180
8b801ead RK	181	priv(host)->ctrl = 0x40;
8b801ead RK	182	writeb(0x40, base + CTRL);
1da177e4	183
8b801ead	184	return val;
1da177e4 LT	185	}
1da177e4 LT	186
8b801ead	187	static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
1da177e4	188	{
8b801ead	189	void __iomem *base = priv(host)->base;
1da177e4	190
8b801ead	191	writeb(0, base + CTRL);
1da177e4	192
8b801ead RK	193	writeb(value, base + 0x2100 + (reg << 2));
	194
	195	priv(host)->ctrl = 0x40;
	196	writeb(0x40, base + CTRL);
	197	}
1da177e4 LT	198
	199	#include "../NCR5380.c"
	200
d0be4a7d	201	static struct scsi_host_template cumanascsi_template = {
1da177e4 LT	202	.module = THIS_MODULE,
	203	.name = "Cumana 16-bit SCSI",
	204	.info = cumanascsi_info,
	205	.queuecommand = cumanascsi_queue_command,
	206	.eh_abort_handler = NCR5380_abort,
1da177e4	207	.eh_bus_reset_handler = NCR5380_bus_reset,
1da177e4 LT	208	.can_queue = 16,
	209	.this_id = 7,
	210	.sg_tablesize = SG_ALL,
	211	.cmd_per_lun = 2,
1da177e4 LT	212	.use_clustering = DISABLE_CLUSTERING,
	213	.proc_name = "CumanaSCSI-1",
	214	};
	215
6f039790 GKH	216	static int cumanascsi1_probe(struct expansion_card *ec,
6f039790 GKH	217	const struct ecard_id *id)
1da177e4 LT	218	{
1da177e4 LT	219	struct Scsi_Host *host;
8b801ead	220	int ret;
1da177e4	221
8b801ead RK	222	ret = ecard_request_resources(ec);
8b801ead RK	223	if (ret)
1da177e4 LT	224	goto out;
1da177e4 LT	225
8b801ead RK	226	host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
	227	if (!host) {
	228	ret = -ENOMEM;
	229	goto out_release;
	230	}
	231
	232	priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
	233	ecard_resource_len(ec, ECARD_RES_IOCSLOW));
	234	priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
	235	ecard_resource_len(ec, ECARD_RES_MEMC));
	236	if (!priv(host)->base \|\| !priv(host)->dma) {
	237	ret = -ENOMEM;
	238	goto out_unmap;
	239	}
	240
1da177e4 LT	241	host->irq = ec->irq;
	242
	243	NCR5380_init(host, 0);
	244
8b801ead RK	245	priv(host)->ctrl = 0;
	246	writeb(0, priv(host)->base + CTRL);
	247
1da177e4 LT	248	host->n_io_port = 255;
	249	if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
	250	ret = -EBUSY;
8b801ead	251	goto out_unmap;
1da177e4 LT	252	}
1da177e4 LT	253
4909cc2b	254	ret = request_irq(host->irq, cumanascsi_intr, 0,
1da177e4 LT	255	"CumanaSCSI-1", host);
	256	if (ret) {
	257	printk("scsi%d: IRQ%d not free: %d\n",
	258	host->host_no, host->irq, ret);
8b801ead	259	goto out_unmap;
1da177e4 LT	260	}
1da177e4 LT	261
1da177e4 LT	262	ret = scsi_add_host(host, &ec->dev);
	263	if (ret)
	264	goto out_free_irq;
	265
	266	scsi_scan_host(host);
	267	goto out;
	268
	269	out_free_irq:
	270	free_irq(host->irq, host);
8b801ead RK	271	out_unmap:
	272	iounmap(priv(host)->base);
	273	iounmap(priv(host)->dma);
1da177e4	274	scsi_host_put(host);
8b801ead RK	275	out_release:
8b801ead RK	276	ecard_release_resources(ec);
1da177e4 LT	277	out:
	278	return ret;
	279	}
	280
6f039790	281	static void cumanascsi1_remove(struct expansion_card *ec)
1da177e4 LT	282	{
	283	struct Scsi_Host *host = ecard_get_drvdata(ec);
	284
	285	ecard_set_drvdata(ec, NULL);
	286
	287	scsi_remove_host(host);
	288	free_irq(host->irq, host);
	289	NCR5380_exit(host);
8b801ead RK	290	iounmap(priv(host)->base);
8b801ead RK	291	iounmap(priv(host)->dma);
1da177e4	292	scsi_host_put(host);
8b801ead	293	ecard_release_resources(ec);
1da177e4 LT	294	}
	295
	296	static const struct ecard_id cumanascsi1_cids[] = {
	297	{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
	298	{ 0xffff, 0xffff }
	299	};
	300
	301	static struct ecard_driver cumanascsi1_driver = {
	302	.probe = cumanascsi1_probe,
6f039790	303	.remove = cumanascsi1_remove,
1da177e4 LT	304	.id_table = cumanascsi1_cids,
	305	.drv = {
	306	.name = "cumanascsi1",
	307	},
	308	};
	309
	310	static int __init cumanascsi_init(void)
	311	{
	312	return ecard_register_driver(&cumanascsi1_driver);
	313	}
	314
	315	static void __exit cumanascsi_exit(void)
	316	{
	317	ecard_remove_driver(&cumanascsi1_driver);
	318	}
	319
	320	module_init(cumanascsi_init);
	321	module_exit(cumanascsi_exit);
	322
	323	MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
	324	MODULE_LICENSE("GPL");