[linux-2.6-block.git] / drivers / scsi / lasi700.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* -*- mode: c; c-basic-offset: 8 -*- */

/* PARISC LASI driver for the 53c700 chip
 *
 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
**-----------------------------------------------------------------------------
**  
**
**-----------------------------------------------------------------------------
 */

/*
 * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
 * debugging this driver on the parisc architecture and suggesting
 * many improvements and bug fixes.
 *
 * Thanks also go to Linuxcare Inc. for providing several PARISC
 * machines for me to debug the driver on.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/stat.h>
#include <linux/mm.h>
#include <linux/blkdev.h>
#include <linux/ioport.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>

#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/parisc-device.h>
#include <asm/delay.h>

#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>

#include "53c700.h"

MODULE_AUTHOR("James Bottomley");
MODULE_DESCRIPTION("lasi700 SCSI Driver");
MODULE_LICENSE("GPL");

#define LASI_700_SVERSION 0x00071
#define LASI_710_SVERSION 0x00082

#define LASI700_ID_TABLE {			\
	.hw_type	= HPHW_FIO,		\
	.sversion	= LASI_700_SVERSION,	\
	.hversion	= HVERSION_ANY_ID,	\
	.hversion_rev	= HVERSION_REV_ANY_ID,	\
}

#define LASI710_ID_TABLE {			\
	.hw_type	= HPHW_FIO,		\
	.sversion	= LASI_710_SVERSION,	\
	.hversion	= HVERSION_ANY_ID,	\
	.hversion_rev	= HVERSION_REV_ANY_ID,	\
}

#define LASI700_CLOCK	25
#define LASI710_CLOCK	40
#define LASI_SCSI_CORE_OFFSET 0x100

static const struct parisc_device_id lasi700_ids[] __initconst = {
	LASI700_ID_TABLE,
	LASI710_ID_TABLE,
	{ 0 }
};

static struct scsi_host_template lasi700_template = {
	.name		= "LASI SCSI 53c700",
	.proc_name	= "lasi700",
	.this_id	= 7,
	.module		= THIS_MODULE,
};
MODULE_DEVICE_TABLE(parisc, lasi700_ids);

static int __init
lasi700_probe(struct parisc_device *dev)
{
	unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
	struct NCR_700_Host_Parameters *hostdata;
	struct Scsi_Host *host;

	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
	if (!hostdata) {
		dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n");
		return -ENOMEM;
	}

	hostdata->dev = &dev->dev;
	dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
	hostdata->base = ioremap_nocache(base, 0x100);
	hostdata->differential = 0;

	if (dev->id.sversion == LASI_700_SVERSION) {
		hostdata->clock = LASI700_CLOCK;
		hostdata->force_le_on_be = 1;
	} else {
		hostdata->clock = LASI710_CLOCK;
		hostdata->force_le_on_be = 0;
		hostdata->chip710 = 1;
		hostdata->dmode_extra = DMODE_FC2;
		hostdata->burst_length = 8;
	}

	host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
	if (!host)
		goto out_kfree;
	host->this_id = 7;
	host->base = base;
	host->irq = dev->irq;
	if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
		printk(KERN_ERR "lasi700: request_irq failed!\n");
		goto out_put_host;
	}

	dev_set_drvdata(&dev->dev, host);
	scsi_scan_host(host);

	return 0;

 out_put_host:
	scsi_host_put(host);
 out_kfree:
	iounmap(hostdata->base);
	kfree(hostdata);
	return -ENODEV;
}

static int __exit
lasi700_driver_remove(struct parisc_device *dev)
{
	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
	struct NCR_700_Host_Parameters *hostdata = 
		(struct NCR_700_Host_Parameters *)host->hostdata[0];

	scsi_remove_host(host);
	NCR_700_release(host);
	free_irq(host->irq, host);
	iounmap(hostdata->base);
	kfree(hostdata);

	return 0;
}

static struct parisc_driver lasi700_driver __refdata = {
	.name =		"lasi_scsi",
	.id_table =	lasi700_ids,
	.probe =	lasi700_probe,
	.remove =	__exit_p(lasi700_driver_remove),
};

static int __init
lasi700_init(void)
{
	return register_parisc_driver(&lasi700_driver);
}

static void __exit
lasi700_exit(void)
{
	unregister_parisc_driver(&lasi700_driver);
}

module_init(lasi700_init);
module_exit(lasi700_exit);
Commit	Line	Data
74ba9207	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/* -- mode: c; c-basic-offset: 8 -- */
	3
	4	/* PARISC LASI driver for the 53c700 chip
	5	*
	6	* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
	7	**-----------------------------------------------------------------------------
	8	**
1da177e4 LT	9	**
	10	**-----------------------------------------------------------------------------
	11	*/
	12
	13	/*
	14	* Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
	15	* debugging this driver on the parisc architecture and suggesting
	16	* many improvements and bug fixes.
	17	*
	18	* Thanks also go to Linuxcare Inc. for providing several PARISC
	19	* machines for me to debug the driver on.
	20	*/
	21
	22	#include <linux/kernel.h>
	23	#include <linux/module.h>
	24	#include <linux/init.h>
	25	#include <linux/types.h>
	26	#include <linux/stat.h>
	27	#include <linux/mm.h>
	28	#include <linux/blkdev.h>
1da177e4 LT	29	#include <linux/ioport.h>
1da177e4 LT	30	#include <linux/dma-mapping.h>
5a0e3ad6	31	#include <linux/slab.h>
1da177e4 LT	32
	33	#include <asm/page.h>
	34	#include <asm/pgtable.h>
	35	#include <asm/irq.h>
	36	#include <asm/hardware.h>
	37	#include <asm/parisc-device.h>
	38	#include <asm/delay.h>
	39
	40	#include <scsi/scsi_host.h>
	41	#include <scsi/scsi_device.h>
	42	#include <scsi/scsi_transport.h>
	43	#include <scsi/scsi_transport_spi.h>
	44
	45	#include "53c700.h"
	46
	47	MODULE_AUTHOR("James Bottomley");
	48	MODULE_DESCRIPTION("lasi700 SCSI Driver");
	49	MODULE_LICENSE("GPL");
	50
	51	#define LASI_700_SVERSION 0x00071
	52	#define LASI_710_SVERSION 0x00082
	53
	54	#define LASI700_ID_TABLE { \
	55	.hw_type = HPHW_FIO, \
	56	.sversion = LASI_700_SVERSION, \
	57	.hversion = HVERSION_ANY_ID, \
	58	.hversion_rev = HVERSION_REV_ANY_ID, \
	59	}
	60
	61	#define LASI710_ID_TABLE { \
	62	.hw_type = HPHW_FIO, \
	63	.sversion = LASI_710_SVERSION, \
	64	.hversion = HVERSION_ANY_ID, \
	65	.hversion_rev = HVERSION_REV_ANY_ID, \
	66	}
	67
	68	#define LASI700_CLOCK 25
	69	#define LASI710_CLOCK 40
	70	#define LASI_SCSI_CORE_OFFSET 0x100
	71
6ade2a0b	72	static const struct parisc_device_id lasi700_ids[] __initconst = {
1da177e4 LT	73	LASI700_ID_TABLE,
	74	LASI710_ID_TABLE,
	75	{ 0 }
	76	};
	77
	78	static struct scsi_host_template lasi700_template = {
	79	.name = "LASI SCSI 53c700",
	80	.proc_name = "lasi700",
	81	.this_id = 7,
	82	.module = THIS_MODULE,
	83	};
	84	MODULE_DEVICE_TABLE(parisc, lasi700_ids);
	85
	86	static int __init
	87	lasi700_probe(struct parisc_device *dev)
	88	{
53f01bba	89	unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
1da177e4 LT	90	struct NCR_700_Host_Parameters *hostdata;
	91	struct Scsi_Host *host;
	92
dd00cc48	93	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
1da177e4	94	if (!hostdata) {
7f384ce7	95	dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n");
1da177e4 LT	96	return -ENOMEM;
1da177e4 LT	97	}
1da177e4 LT	98
1da177e4 LT	99	hostdata->dev = &dev->dev;
284901a9	100	dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
5076c158	101	hostdata->base = ioremap_nocache(base, 0x100);
1da177e4 LT	102	hostdata->differential = 0;
	103
	104	if (dev->id.sversion == LASI_700_SVERSION) {
	105	hostdata->clock = LASI700_CLOCK;
	106	hostdata->force_le_on_be = 1;
	107	} else {
	108	hostdata->clock = LASI710_CLOCK;
	109	hostdata->force_le_on_be = 0;
	110	hostdata->chip710 = 1;
	111	hostdata->dmode_extra = DMODE_FC2;
f67a9c15	112	hostdata->burst_length = 8;
1da177e4 LT	113	}
1da177e4 LT	114
1da177e4 LT	115	host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
	116	if (!host)
	117	goto out_kfree;
	118	host->this_id = 7;
56fece20	119	host->base = base;
1da177e4	120	host->irq = dev->irq;
1d6f359a	121	if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
1da177e4 LT	122	printk(KERN_ERR "lasi700: request_irq failed!\n");
	123	goto out_put_host;
	124	}
	125
	126	dev_set_drvdata(&dev->dev, host);
	127	scsi_scan_host(host);
	128
	129	return 0;
	130
	131	out_put_host:
	132	scsi_host_put(host);
	133	out_kfree:
	134	iounmap(hostdata->base);
	135	kfree(hostdata);
	136	return -ENODEV;
	137	}
	138
	139	static int __exit
	140	lasi700_driver_remove(struct parisc_device *dev)
	141	{
	142	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
	143	struct NCR_700_Host_Parameters *hostdata =
	144	(struct NCR_700_Host_Parameters *)host->hostdata[0];
	145
	146	scsi_remove_host(host);
	147	NCR_700_release(host);
	148	free_irq(host->irq, host);
	149	iounmap(hostdata->base);
	150	kfree(hostdata);
	151
	152	return 0;
	153	}
	154
6ade2a0b	155	static struct parisc_driver lasi700_driver __refdata = {
bdad1f83	156	.name = "lasi_scsi",
1da177e4 LT	157	.id_table = lasi700_ids,
1da177e4 LT	158	.probe = lasi700_probe,
6ade2a0b	159	.remove = __exit_p(lasi700_driver_remove),
1da177e4 LT	160	};
	161
	162	static int __init
	163	lasi700_init(void)
	164	{
	165	return register_parisc_driver(&lasi700_driver);
	166	}
	167
	168	static void __exit
	169	lasi700_exit(void)
	170	{
	171	unregister_parisc_driver(&lasi700_driver);
	172	}
	173
	174	module_init(lasi700_init);
	175	module_exit(lasi700_exit);