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
|
/*
* Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
* Amiga Technologies A4000T SCSI controller.
*
* Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
* plus modifications of the 53c7xx.c driver to support the Amiga.
*
* Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_spi.h>
#include "53c700.h"
MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
MODULE_LICENSE("GPL");
static struct scsi_host_template a4000t_scsi_driver_template = {
.name = "A4000T builtin SCSI",
.proc_name = "A4000t",
.this_id = 7,
.module = THIS_MODULE,
};
static struct platform_device *a4000t_scsi_device;
#define A4000T_SCSI_ADDR 0xdd0040
static int __devinit a4000t_probe(struct device *dev)
{
struct Scsi_Host * host = NULL;
struct NCR_700_Host_Parameters *hostdata;
if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
goto out;
if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
"A4000T builtin SCSI"))
goto out;
hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
if (hostdata == NULL) {
printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
goto out_release;
}
memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
/* Fill in the required pieces of hostdata */
hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
hostdata->clock = 50;
hostdata->chip710 = 1;
hostdata->dmode_extra = DMODE_FC2;
hostdata->dcntl_extra = EA_710;
/* and register the chip */
host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev);
if (!host) {
printk(KERN_ERR "a4000t-scsi: No host detected; "
"board configuration problem?\n");
goto out_free;
}
host->this_id = 7;
host->base = A4000T_SCSI_ADDR;
host->irq = IRQ_AMIGA_PORTS;
if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
host)) {
printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
goto out_put_host;
}
dev_set_drvdata(dev, host);
scsi_scan_host(host);
return 0;
out_put_host:
scsi_host_put(host);
out_free:
kfree(hostdata);
out_release:
release_mem_region(A4000T_SCSI_ADDR, 0x1000);
out:
return -ENODEV;
}
static __devexit int a4000t_device_remove(struct device *dev)
{
struct Scsi_Host *host = dev_get_drvdata(dev);
struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
scsi_remove_host(host);
NCR_700_release(host);
kfree(hostdata);
free_irq(host->irq, host);
release_mem_region(A4000T_SCSI_ADDR, 0x1000);
return 0;
}
static struct device_driver a4000t_scsi_driver = {
.name = "a4000t-scsi",
.bus = &platform_bus_type,
.probe = a4000t_probe,
.remove = __devexit_p(a4000t_device_remove),
};
static int __init a4000t_scsi_init(void)
{
int err;
err = driver_register(&a4000t_scsi_driver);
if (err)
return err;
a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
-1, NULL, 0);
if (IS_ERR(a4000t_scsi_device)) {
driver_unregister(&a4000t_scsi_driver);
return PTR_ERR(a4000t_scsi_device);
}
return err;
}
static void __exit a4000t_scsi_exit(void)
{
platform_device_unregister(a4000t_scsi_device);
driver_unregister(&a4000t_scsi_driver);
}
module_init(a4000t_scsi_init);
module_exit(a4000t_scsi_exit);
|
