Merge commit 'v2.6.34-rc6' into core/locking
[pandora-kernel.git] / drivers / scsi / a4000t.c
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 <linux/slab.h>
16 #include <asm/amigahw.h>
17 #include <asm/amigaints.h>
18 #include <scsi/scsi_host.h>
19 #include <scsi/scsi_transport_spi.h>
20
21 #include "53c700.h"
22
23 MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
24 MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
25 MODULE_LICENSE("GPL");
26
27
28 static struct scsi_host_template a4000t_scsi_driver_template = {
29         .name           = "A4000T builtin SCSI",
30         .proc_name      = "A4000t",
31         .this_id        = 7,
32         .module         = THIS_MODULE,
33 };
34
35 static struct platform_device *a4000t_scsi_device;
36
37 #define A4000T_SCSI_ADDR 0xdd0040
38
39 static int __devinit a4000t_probe(struct platform_device *dev)
40 {
41         struct Scsi_Host *host;
42         struct NCR_700_Host_Parameters *hostdata;
43
44         if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
45                 goto out;
46
47         if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
48                                 "A4000T builtin SCSI"))
49                 goto out;
50
51         hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
52         if (!hostdata) {
53                 printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
54                 goto out_release;
55         }
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,
66                               &dev->dev);
67         if (!host) {
68                 printk(KERN_ERR "a4000t-scsi: No host detected; "
69                                 "board configuration problem?\n");
70                 goto out_free;
71         }
72
73         host->this_id = 7;
74         host->base = A4000T_SCSI_ADDR;
75         host->irq = IRQ_AMIGA_PORTS;
76
77         if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
78                         host)) {
79                 printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
80                 goto out_put_host;
81         }
82
83         platform_set_drvdata(dev, host);
84         scsi_scan_host(host);
85
86         return 0;
87
88  out_put_host:
89         scsi_host_put(host);
90  out_free:
91         kfree(hostdata);
92  out_release:
93         release_mem_region(A4000T_SCSI_ADDR, 0x1000);
94  out:
95         return -ENODEV;
96 }
97
98 static __devexit int a4000t_device_remove(struct platform_device *dev)
99 {
100         struct Scsi_Host *host = platform_get_drvdata(dev);
101         struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
102
103         scsi_remove_host(host);
104
105         NCR_700_release(host);
106         kfree(hostdata);
107         free_irq(host->irq, host);
108         release_mem_region(A4000T_SCSI_ADDR, 0x1000);
109
110         return 0;
111 }
112
113 static struct platform_driver a4000t_scsi_driver = {
114         .driver = {
115                 .name           = "a4000t-scsi",
116                 .owner          = THIS_MODULE,
117         },
118         .probe          = a4000t_probe,
119         .remove         = __devexit_p(a4000t_device_remove),
120 };
121
122 static int __init a4000t_scsi_init(void)
123 {
124         int err;
125
126         err = platform_driver_register(&a4000t_scsi_driver);
127         if (err)
128                 return err;
129
130         a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
131                         -1, NULL, 0);
132         if (IS_ERR(a4000t_scsi_device)) {
133                 platform_driver_unregister(&a4000t_scsi_driver);
134                 return PTR_ERR(a4000t_scsi_device);
135         }
136
137         return err;
138 }
139
140 static void __exit a4000t_scsi_exit(void)
141 {
142         platform_device_unregister(a4000t_scsi_device);
143         platform_driver_unregister(&a4000t_scsi_driver);
144 }
145
146 module_init(a4000t_scsi_init);
147 module_exit(a4000t_scsi_exit);