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
155
156
157
158
159
160
161
162
|
/*
* Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux.
*
* Based on work by Alan Hourihane
*
* Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
*/
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <asm/mvme16xhw.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("Kars de Jong <jongk@linux-m68k.org>");
MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
MODULE_LICENSE("GPL");
static struct scsi_host_template mvme16x_scsi_driver_template = {
.name = "MVME16x NCR53c710 SCSI",
.proc_name = "MVME16x",
.this_id = 7,
.module = THIS_MODULE,
};
static struct platform_device *mvme16x_scsi_device;
static __devinit int
mvme16x_probe(struct platform_device *dev)
{
struct Scsi_Host * host = NULL;
struct NCR_700_Host_Parameters *hostdata;
if (!MACH_IS_MVME16x)
goto out;
if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
printk(KERN_INFO "mvme16x-scsi: detection disabled, "
"SCSI chip not present\n");
goto out;
}
hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
if (hostdata == NULL) {
printk(KERN_ERR "mvme16x-scsi: "
"Failed to allocate host data\n");
goto out;
}
/* Fill in the required pieces of hostdata */
hostdata->base = (void __iomem *)0xfff47000UL;
hostdata->clock = 50; /* XXX - depends on the CPU clock! */
hostdata->chip710 = 1;
hostdata->dmode_extra = DMODE_FC2;
hostdata->dcntl_extra = EA_710;
hostdata->ctest7_extra = CTEST7_TT1;
/* and register the chip */
host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata,
&dev->dev);
if (!host) {
printk(KERN_ERR "mvme16x-scsi: No host detected; "
"board configuration problem?\n");
goto out_free;
}
host->this_id = 7;
host->base = 0xfff47000UL;
host->irq = MVME16x_IRQ_SCSI;
if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) {
printk(KERN_ERR "mvme16x-scsi: request_irq failed\n");
goto out_put_host;
}
/* Enable scsi chip ints */
{
volatile unsigned long v;
/* Enable scsi interrupts at level 4 in PCCchip2 */
v = in_be32(0xfff4202c);
v = (v & ~0xff) | 0x10 | 4;
out_be32(0xfff4202c, v);
}
platform_set_drvdata(dev, host);
scsi_scan_host(host);
return 0;
out_put_host:
scsi_host_put(host);
out_free:
kfree(hostdata);
out:
return -ENODEV;
}
static __devexit int
mvme16x_device_remove(struct platform_device *dev)
{
struct Scsi_Host *host = platform_get_drvdata(dev);
struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
/* Disable scsi chip ints */
{
volatile unsigned long v;
v = in_be32(0xfff4202c);
v &= ~0x10;
out_be32(0xfff4202c, v);
}
scsi_remove_host(host);
NCR_700_release(host);
kfree(hostdata);
free_irq(host->irq, host);
return 0;
}
static struct platform_driver mvme16x_scsi_driver = {
.driver = {
.name = "mvme16x-scsi",
.owner = THIS_MODULE,
},
.probe = mvme16x_probe,
.remove = __devexit_p(mvme16x_device_remove),
};
static int __init mvme16x_scsi_init(void)
{
int err;
err = platform_driver_register(&mvme16x_scsi_driver);
if (err)
return err;
mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
-1, NULL, 0);
if (IS_ERR(mvme16x_scsi_device)) {
platform_driver_unregister(&mvme16x_scsi_driver);
return PTR_ERR(mvme16x_scsi_device);
}
return 0;
}
static void __exit mvme16x_scsi_exit(void)
{
platform_device_unregister(mvme16x_scsi_device);
platform_driver_unregister(&mvme16x_scsi_driver);
}
module_init(mvme16x_scsi_init);
module_exit(mvme16x_scsi_exit);
|
