1 /*
2 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
3 * Amiga Technologies A4000T SCSI controller.
4 *
5 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
6 * plus modifications of the 53c7xx.c driver to support the Amiga.
7 *
8 * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
9 */
10
11 #include <linux/module.h>
12 #include <linux/platform_device.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <asm/amigahw.h>
16 #include <asm/amigaints.h>
17 #include <scsi/scsi_host.h>
18 #include <scsi/scsi_transport_spi.h>
19
20 #include "53c700.h"
21
22 MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
23 MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
24 MODULE_LICENSE("GPL");
25
26
27 static struct scsi_host_template a4000t_scsi_driver_template = {
28 .name = "A4000T builtin SCSI",
29 .proc_name = "A4000t",
30 .this_id = 7,
31 .module = THIS_MODULE,
32 };
33
34 static struct platform_device *a4000t_scsi_device;
35
36 #define A4000T_SCSI_ADDR 0xdd0040
37
38 static int __devinit a4000t_probe(struct device *dev)
39 {
40 struct Scsi_Host *host;
41 struct NCR_700_Host_Parameters *hostdata;
42
43 if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
44 goto out;
45
46 if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
47 "A4000T builtin SCSI"))
48 goto out;
49
50 hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
51 if (!hostdata) {
52 printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
53 goto out_release;
54 }
55
56 /* Fill in the required pieces of hostdata */
57 hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
58 hostdata->clock = 50;
59 hostdata->chip710 = 1;
60 hostdata->dmode_extra = DMODE_FC2;
61 hostdata->dcntl_extra = EA_710;
62
63 /* and register the chip */
64 host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev);
65 if (!host) {
66 printk(KERN_ERR "a4000t-scsi: No host detected; "
67 "board configuration problem?\n");
68 goto out_free;
69 }
70
71 host->this_id = 7;
72 host->base = A4000T_SCSI_ADDR;
73 host->irq = IRQ_AMIGA_PORTS;
74
75 if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
76 host)) {
77 printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
78 goto out_put_host;
79 }
80
81 dev_set_drvdata(dev, host);
82 scsi_scan_host(host);
83
84 return 0;
85
86 out_put_host:
87 scsi_host_put(host);
88 out_free:
89 kfree(hostdata);
90 out_release:
91 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
92 out:
93 return -ENODEV;
94 }
95
96 static __devexit int a4000t_device_remove(struct device *dev)
97 {
98 struct Scsi_Host *host = dev_get_drvdata(dev);
99 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
100
101 scsi_remove_host(host);
102
103 NCR_700_release(host);
104 kfree(hostdata);
105 free_irq(host->irq, host);
106 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
107
108 return 0;
109 }
110
111 static struct device_driver a4000t_scsi_driver = {
112 .name = "a4000t-scsi",
113 .bus = &platform_bus_type,
114 .probe = a4000t_probe,
115 .remove = __devexit_p(a4000t_device_remove),
116 };
117
118 static int __init a4000t_scsi_init(void)
119 {
120 int err;
121
122 err = driver_register(&a4000t_scsi_driver);
123 if (err)
124 return err;
125
126 a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
127 -1, NULL, 0);
128 if (IS_ERR(a4000t_scsi_device)) {
129 driver_unregister(&a4000t_scsi_driver);
130 return PTR_ERR(a4000t_scsi_device);
131 }
132
133 return err;
134 }
135
136 static void __exit a4000t_scsi_exit(void)
137 {
138 platform_device_unregister(a4000t_scsi_device);
139 driver_unregister(&a4000t_scsi_driver);
140 }
141
142 module_init(a4000t_scsi_init);
143 module_exit(a4000t_scsi_exit);
144
|
This page was automatically generated by the
LXR engine.
|