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authorThomas Bogendoerfer <tsbogend@alpha.franken.de>2006-12-25 15:32:04 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-01-13 14:49:58 -0500
commitc27d85f3f3c5c663d6b6295730e8a7c0c3f9a296 (patch)
tree445b42c21663caa9902e2431ee4b167c03b963ce /drivers/scsi/sni_53c710.c
parent3b1ca5a12ce9849a794019c4b51cdbd456c1e8e7 (diff)
[SCSI] SNI RM 53c710 driver
This patch adds a SCSI driver for the onboard 53c710 chip of some SNI RM machines. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/sni_53c710.c')
-rw-r--r--drivers/scsi/sni_53c710.c159
1 files changed, 159 insertions, 0 deletions
diff --git a/drivers/scsi/sni_53c710.c b/drivers/scsi/sni_53c710.c
new file mode 100644
index 000000000000..6bc505115841
--- /dev/null
+++ b/drivers/scsi/sni_53c710.c
@@ -0,0 +1,159 @@
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/stat.h>
34#include <linux/mm.h>
35#include <linux/blkdev.h>
36#include <linux/sched.h>
37#include <linux/ioport.h>
38#include <linux/dma-mapping.h>
39#include <linux/platform_device.h>
40
41#include <asm/page.h>
42#include <asm/pgtable.h>
43#include <asm/irq.h>
44#include <asm/delay.h>
45
46#include <scsi/scsi_host.h>
47#include <scsi/scsi_device.h>
48#include <scsi/scsi_transport.h>
49#include <scsi/scsi_transport_spi.h>
50
51#include "53c700.h"
52
53MODULE_AUTHOR("Thomas Bogendörfer");
54MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
55MODULE_LICENSE("GPL");
56
57#define SNIRM710_CLOCK 32
58
59static struct scsi_host_template snirm710_template = {
60 .name = "SNI RM SCSI 53c710",
61 .proc_name = "snirm_53c710",
62 .this_id = 7,
63 .module = THIS_MODULE,
64};
65
66static int __init snirm710_probe(struct platform_device *dev)
67{
68 unsigned long base;
69 struct NCR_700_Host_Parameters *hostdata;
70 struct Scsi_Host *host;
71 struct resource *res;
72
73 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
74 if (!res)
75 return -ENODEV;
76
77 base = res->start;
78 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
79 if (!hostdata) {
80 printk(KERN_ERR "%s: Failed to allocate host data\n",
81 dev->dev.bus_id);
82 return -ENOMEM;
83 }
84
85 hostdata->dev = &dev->dev;
86 dma_set_mask(&dev->dev, DMA_32BIT_MASK);
87 hostdata->base = ioremap_nocache(CPHYSADDR(base), 0x100);
88 hostdata->differential = 0;
89
90 hostdata->clock = SNIRM710_CLOCK;
91 hostdata->force_le_on_be = 1;
92 hostdata->chip710 = 1;
93 hostdata->burst_length = 4;
94
95 host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
96 if (!host)
97 goto out_kfree;
98 host->this_id = 7;
99 host->base = base;
100 host->irq = platform_get_irq(dev, 0);
101 if(request_irq(host->irq, NCR_700_intr, SA_SHIRQ, "snirm710", host)) {
102 printk(KERN_ERR "snirm710: request_irq failed!\n");
103 goto out_put_host;
104 }
105
106 dev_set_drvdata(&dev->dev, host);
107 scsi_scan_host(host);
108
109 return 0;
110
111 out_put_host:
112 scsi_host_put(host);
113 out_kfree:
114 iounmap(hostdata->base);
115 kfree(hostdata);
116 return -ENODEV;
117}
118
119static int __exit snirm710_driver_remove(struct platform_device *dev)
120{
121 struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
122 struct NCR_700_Host_Parameters *hostdata =
123 (struct NCR_700_Host_Parameters *)host->hostdata[0];
124
125 scsi_remove_host(host);
126 NCR_700_release(host);
127 free_irq(host->irq, host);
128 iounmap(hostdata->base);
129 kfree(hostdata);
130
131 return 0;
132}
133
134static struct platform_driver snirm710_driver = {
135 .probe = snirm710_probe,
136 .remove = __devexit_p(snirm710_driver_remove),
137 .driver = {
138 .name = "snirm_53c710",
139 },
140};
141
142static int __init snirm710_init(void)
143{
144 int err;
145
146 if ((err = platform_driver_register(&snirm710_driver))) {
147 printk(KERN_ERR "Driver registration failed\n");
148 return err;
149 }
150 return 0;
151}
152
153static void __exit snirm710_exit(void)
154{
155 platform_driver_unregister(&snirm710_driver);
156}
157
158module_init(snirm710_init);
159module_exit(snirm710_exit);