sni_53c710.c revision 5a0e3ad6af8660be21ca98a971cd00f331318c05 
1/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/* SNI RM driver
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 * Based on lasi700.c
27 */
28
29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/types.h>
33#include <linux/slab.h>
34#include <linux/stat.h>
35#include <linux/mm.h>
36#include <linux/blkdev.h>
37#include <linux/sched.h>
38#include <linux/ioport.h>
39#include <linux/dma-mapping.h>
40#include <linux/platform_device.h>
41
42#include <asm/page.h>
43#include <asm/pgtable.h>
44#include <asm/irq.h>
45#include <asm/delay.h>
46
47#include <scsi/scsi_host.h>
48#include <scsi/scsi_device.h>
49#include <scsi/scsi_transport.h>
50#include <scsi/scsi_transport_spi.h>
51
52#include "53c700.h"
53
54MODULE_AUTHOR("Thomas Bogend�rfer");
55MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
56MODULE_LICENSE("GPL");
57MODULE_ALIAS("platform:snirm_53c710");
58
59#define SNIRM710_CLOCK	32
60
61static struct scsi_host_template snirm710_template = {
62	.name		= "SNI RM SCSI 53c710",
63	.proc_name	= "snirm_53c710",
64	.this_id	= 7,
65	.module		= THIS_MODULE,
66};
67
68static int __devinit snirm710_probe(struct platform_device *dev)
69{
70	unsigned long base;
71	struct NCR_700_Host_Parameters *hostdata;
72	struct Scsi_Host *host;
73	struct  resource *res;
74
75	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
76	if (!res)
77		return -ENODEV;
78
79	base = res->start;
80	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
81	if (!hostdata) {
82		dev_printk(KERN_ERR, dev, "Failed to allocate host data\n");
83		return -ENOMEM;
84	}
85
86	hostdata->dev = &dev->dev;
87	dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
88	hostdata->base = ioremap_nocache(base, 0x100);
89	hostdata->differential = 0;
90
91	hostdata->clock = SNIRM710_CLOCK;
92	hostdata->force_le_on_be = 1;
93	hostdata->chip710 = 1;
94	hostdata->burst_length = 4;
95
96	host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
97	if (!host)
98		goto out_kfree;
99	host->this_id = 7;
100	host->base = base;
101	host->irq = platform_get_irq(dev, 0);
102	if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
103		printk(KERN_ERR "snirm710: request_irq failed!\n");
104		goto out_put_host;
105	}
106
107	dev_set_drvdata(&dev->dev, host);
108	scsi_scan_host(host);
109
110	return 0;
111
112 out_put_host:
113	scsi_host_put(host);
114 out_kfree:
115	iounmap(hostdata->base);
116	kfree(hostdata);
117	return -ENODEV;
118}
119
120static int __exit snirm710_driver_remove(struct platform_device *dev)
121{
122	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
123	struct NCR_700_Host_Parameters *hostdata =
124		(struct NCR_700_Host_Parameters *)host->hostdata[0];
125
126	scsi_remove_host(host);
127	NCR_700_release(host);
128	free_irq(host->irq, host);
129	iounmap(hostdata->base);
130	kfree(hostdata);
131
132	return 0;
133}
134
135static struct platform_driver snirm710_driver = {
136	.probe	= snirm710_probe,
137	.remove	= __devexit_p(snirm710_driver_remove),
138	.driver	= {
139		.name	= "snirm_53c710",
140		.owner	= THIS_MODULE,
141	},
142};
143
144static int __init snirm710_init(void)
145{
146	return platform_driver_register(&snirm710_driver);
147}
148
149static void __exit snirm710_exit(void)
150{
151	platform_driver_unregister(&snirm710_driver);
152}
153
154module_init(snirm710_init);
155module_exit(snirm710_exit);
156