[net-next-2.6.git] / drivers / scsi / lasi700.c

/* -*- mode: c; c-basic-offset: 8 -*- */

/* PARISC LASI driver for the 53c700 chip
 *
 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
**-----------------------------------------------------------------------------
**  
**  This program is free software; you can redistribute it and/or modify
**  it under the terms of the GNU General Public License as published by
**  the Free Software Foundation; either version 2 of the License, or
**  (at your option) any later version.
**
**  This program is distributed in the hope that it will be useful,
**  but WITHOUT ANY WARRANTY; without even the implied warranty of
**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**  GNU General Public License for more details.
**
**  You should have received a copy of the GNU General Public License
**  along with this program; if not, write to the Free Software
**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**
**-----------------------------------------------------------------------------
 */

/*
 * 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 <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 struct parisc_device_id lasi700_ids[] = {
	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 = kmalloc(sizeof(*hostdata), GFP_KERNEL);
	if (!hostdata) {
		printk(KERN_ERR "%s: Failed to allocate host data\n",
		       dev->dev.bus_id);
		return -ENOMEM;
	}
	memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));

	hostdata->dev = &dev->dev;
	dma_set_mask(&dev->dev, DMA_32BIT_MASK);
	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 = {
	.name =		"lasi_scsi",
	.id_table =	lasi700_ids,
	.probe =	lasi700_probe,
	.remove =	__devexit_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
1da177e4 LT	1	/* -- mode: c; c-basic-offset: 8 -- */
	2
	3	/* PARISC LASI driver for the 53c700 chip
	4	*
	5	* Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
	6	**-----------------------------------------------------------------------------
	7	**
	8	** This program is free software; you can redistribute it and/or modify
	9	** it under the terms of the GNU General Public License as published by
	10	** the Free Software Foundation; either version 2 of the License, or
	11	** (at your option) any later version.
	12	**
	13	** This program is distributed in the hope that it will be useful,
	14	** but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	** GNU General Public License for more details.
	17	**
	18	** You should have received a copy of the GNU General Public License
	19	** along with this program; if not, write to the Free Software
	20	** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21	**
	22	**-----------------------------------------------------------------------------
	23	*/
	24
	25	/*
	26	* Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
	27	* debugging this driver on the parisc architecture and suggesting
	28	* many improvements and bug fixes.
	29	*
	30	* Thanks also go to Linuxcare Inc. for providing several PARISC
	31	* machines for me to debug the driver on.
	32	*/
	33
	34	#include <linux/kernel.h>
	35	#include <linux/module.h>
	36	#include <linux/init.h>
	37	#include <linux/types.h>
	38	#include <linux/stat.h>
	39	#include <linux/mm.h>
	40	#include <linux/blkdev.h>
1da177e4 LT	41	#include <linux/ioport.h>
	42	#include <linux/dma-mapping.h>
	43
	44	#include <asm/page.h>
	45	#include <asm/pgtable.h>
	46	#include <asm/irq.h>
	47	#include <asm/hardware.h>
	48	#include <asm/parisc-device.h>
	49	#include <asm/delay.h>
	50
	51	#include <scsi/scsi_host.h>
	52	#include <scsi/scsi_device.h>
	53	#include <scsi/scsi_transport.h>
	54	#include <scsi/scsi_transport_spi.h>
	55
	56	#include "53c700.h"
	57
	58	MODULE_AUTHOR("James Bottomley");
	59	MODULE_DESCRIPTION("lasi700 SCSI Driver");
	60	MODULE_LICENSE("GPL");
	61
	62	#define LASI_700_SVERSION 0x00071
	63	#define LASI_710_SVERSION 0x00082
	64
	65	#define LASI700_ID_TABLE { \
	66	.hw_type = HPHW_FIO, \
	67	.sversion = LASI_700_SVERSION, \
	68	.hversion = HVERSION_ANY_ID, \
	69	.hversion_rev = HVERSION_REV_ANY_ID, \
	70	}
	71
	72	#define LASI710_ID_TABLE { \
	73	.hw_type = HPHW_FIO, \
	74	.sversion = LASI_710_SVERSION, \
	75	.hversion = HVERSION_ANY_ID, \
	76	.hversion_rev = HVERSION_REV_ANY_ID, \
	77	}
	78
	79	#define LASI700_CLOCK 25
	80	#define LASI710_CLOCK 40
	81	#define LASI_SCSI_CORE_OFFSET 0x100
	82
	83	static struct parisc_device_id lasi700_ids[] = {
	84	LASI700_ID_TABLE,
	85	LASI710_ID_TABLE,
	86	{ 0 }
	87	};
	88
	89	static struct scsi_host_template lasi700_template = {
	90	.name = "LASI SCSI 53c700",
	91	.proc_name = "lasi700",
	92	.this_id = 7,
	93	.module = THIS_MODULE,
	94	};
	95	MODULE_DEVICE_TABLE(parisc, lasi700_ids);
	96
	97	static int __init
	98	lasi700_probe(struct parisc_device *dev)
	99	{
53f01bba	100	unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
1da177e4 LT	101	struct NCR_700_Host_Parameters *hostdata;
	102	struct Scsi_Host *host;
	103
	104	hostdata = kmalloc(sizeof(*hostdata), GFP_KERNEL);
	105	if (!hostdata) {
	106	printk(KERN_ERR "%s: Failed to allocate host data\n",
	107	dev->dev.bus_id);
	108	return -ENOMEM;
	109	}
	110	memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
	111
	112	hostdata->dev = &dev->dev;
	113	dma_set_mask(&dev->dev, DMA_32BIT_MASK);
5076c158	114	hostdata->base = ioremap_nocache(base, 0x100);
1da177e4 LT	115	hostdata->differential = 0;
	116
	117	if (dev->id.sversion == LASI_700_SVERSION) {
	118	hostdata->clock = LASI700_CLOCK;
	119	hostdata->force_le_on_be = 1;
	120	} else {
	121	hostdata->clock = LASI710_CLOCK;
	122	hostdata->force_le_on_be = 0;
	123	hostdata->chip710 = 1;
	124	hostdata->dmode_extra = DMODE_FC2;
f67a9c15	125	hostdata->burst_length = 8;
1da177e4 LT	126	}
1da177e4 LT	127
1da177e4 LT	128	host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
	129	if (!host)
	130	goto out_kfree;
	131	host->this_id = 7;
56fece20	132	host->base = base;
1da177e4	133	host->irq = dev->irq;
1d6f359a	134	if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
1da177e4 LT	135	printk(KERN_ERR "lasi700: request_irq failed!\n");
	136	goto out_put_host;
	137	}
	138
	139	dev_set_drvdata(&dev->dev, host);
	140	scsi_scan_host(host);
	141
	142	return 0;
	143
	144	out_put_host:
	145	scsi_host_put(host);
	146	out_kfree:
	147	iounmap(hostdata->base);
	148	kfree(hostdata);
	149	return -ENODEV;
	150	}
	151
	152	static int __exit
	153	lasi700_driver_remove(struct parisc_device *dev)
	154	{
	155	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
	156	struct NCR_700_Host_Parameters *hostdata =
	157	(struct NCR_700_Host_Parameters *)host->hostdata[0];
	158
	159	scsi_remove_host(host);
	160	NCR_700_release(host);
	161	free_irq(host->irq, host);
	162	iounmap(hostdata->base);
	163	kfree(hostdata);
	164
	165	return 0;
	166	}
	167
	168	static struct parisc_driver lasi700_driver = {
bdad1f83	169	.name = "lasi_scsi",
1da177e4 LT	170	.id_table = lasi700_ids,
	171	.probe = lasi700_probe,
	172	.remove = __devexit_p(lasi700_driver_remove),
	173	};
	174
	175	static int __init
	176	lasi700_init(void)
	177	{
	178	return register_parisc_driver(&lasi700_driver);
	179	}
	180
	181	static void __exit
	182	lasi700_exit(void)
	183	{
	184	unregister_parisc_driver(&lasi700_driver);
	185	}
	186
	187	module_init(lasi700_init);
	188	module_exit(lasi700_exit);