summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/sni_53c710.c
blob: 76278072147e20ca30444cd5d61fb4a3f5c6f124 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/* -*- mode: c; c-basic-offset: 8 -*- */

/* SNI RM driver
 *
 * 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.
**
**-----------------------------------------------------------------------------
 */

/*
 * Based on lasi700.c
 */

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

#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/irq.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("Thomas Bogendörfer");
MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:snirm_53c710");

#define SNIRM710_CLOCK	32

static struct scsi_host_template snirm710_template = {
	.name		= "SNI RM SCSI 53c710",
	.proc_name	= "snirm_53c710",
	.this_id	= 7,
	.module		= THIS_MODULE,
};

static int snirm710_probe(struct platform_device *dev)
{
	unsigned long base;
	struct NCR_700_Host_Parameters *hostdata;
	struct Scsi_Host *host;
	struct  resource *res;

	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
	if (!res)
		return -ENODEV;

	base = res->start;
	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
	if (!hostdata) {
		dev_printk(KERN_ERR, 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;

	hostdata->clock = SNIRM710_CLOCK;
	hostdata->force_le_on_be = 1;
	hostdata->chip710 = 1;
	hostdata->burst_length = 4;

	host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
	if (!host)
		goto out_kfree;
	host->this_id = 7;
	host->base = base;
	host->irq = platform_get_irq(dev, 0);
	if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
		printk(KERN_ERR "snirm710: 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 snirm710_driver_remove(struct platform_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 platform_driver snirm710_driver = {
	.probe	= snirm710_probe,
	.remove	= snirm710_driver_remove,
	.driver	= {
		.name	= "snirm_53c710",
	},
};

static int __init snirm710_init(void)
{
	return platform_driver_register(&snirm710_driver);
}

static void __exit snirm710_exit(void)
{
	platform_driver_unregister(&snirm710_driver);
}

module_init(snirm710_init);
module_exit(snirm710_exit);