blob: 0c758d1452baa3196010a12f266d3a67d7d17c5e [file] [log] [blame]
Kars de Jonga16efc12007-06-17 14:47:08 +02001/*
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>
Geert Uytterhoeven96249cf2007-06-19 09:47:28 +020015#include <asm/amigahw.h>
Kars de Jonga16efc12007-06-17 14:47:08 +020016#include <asm/amigaints.h>
17#include <scsi/scsi_host.h>
18#include <scsi/scsi_transport_spi.h>
19
20#include "53c700.h"
21
22MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
23MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
24MODULE_LICENSE("GPL");
25
26
27static 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
34static struct platform_device *a4000t_scsi_device;
35
36#define A4000T_SCSI_ADDR 0xdd0040
37
38static int __devinit a4000t_probe(struct device *dev)
39{
40 struct Scsi_Host * host = NULL;
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 = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
51 if (hostdata == NULL) {
52 printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
53 goto out_release;
54 }
55 memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
56
57 /* Fill in the required pieces of hostdata */
58 hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
59 hostdata->clock = 50;
60 hostdata->chip710 = 1;
61 hostdata->dmode_extra = DMODE_FC2;
62 hostdata->dcntl_extra = EA_710;
63
64 /* and register the chip */
65 host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev);
66 if (!host) {
67 printk(KERN_ERR "a4000t-scsi: No host detected; "
68 "board configuration problem?\n");
69 goto out_free;
70 }
71
72 host->this_id = 7;
73 host->base = A4000T_SCSI_ADDR;
74 host->irq = IRQ_AMIGA_PORTS;
75
76 if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
77 host)) {
78 printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
79 goto out_put_host;
80 }
81
Matthew Wilcox3ac709c2007-07-17 13:38:03 -060082 dev_set_drvdata(dev, host);
Kars de Jonga16efc12007-06-17 14:47:08 +020083 scsi_scan_host(host);
84
85 return 0;
86
87 out_put_host:
88 scsi_host_put(host);
89 out_free:
90 kfree(hostdata);
91 out_release:
92 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
93 out:
94 return -ENODEV;
95}
96
97static __devexit int a4000t_device_remove(struct device *dev)
98{
Matthew Wilcox3ac709c2007-07-17 13:38:03 -060099 struct Scsi_Host *host = dev_get_drvdata(dev);
Kars de Jonga16efc12007-06-17 14:47:08 +0200100 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
101
102 scsi_remove_host(host);
103
104 NCR_700_release(host);
105 kfree(hostdata);
106 free_irq(host->irq, host);
107 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
108
109 return 0;
110}
111
112static struct device_driver a4000t_scsi_driver = {
113 .name = "a4000t-scsi",
114 .bus = &platform_bus_type,
115 .probe = a4000t_probe,
116 .remove = __devexit_p(a4000t_device_remove),
117};
118
119static int __init a4000t_scsi_init(void)
120{
121 int err;
122
123 err = driver_register(&a4000t_scsi_driver);
124 if (err)
125 return err;
126
127 a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
128 -1, NULL, 0);
129 if (IS_ERR(a4000t_scsi_device)) {
130 driver_unregister(&a4000t_scsi_driver);
131 return PTR_ERR(a4000t_scsi_device);
132 }
133
134 return err;
135}
136
137static void __exit a4000t_scsi_exit(void)
138{
139 platform_device_unregister(a4000t_scsi_device);
140 driver_unregister(&a4000t_scsi_driver);
141}
142
143module_init(a4000t_scsi_init);
144module_exit(a4000t_scsi_exit);