Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
[linux-2.6] / drivers / scsi / bvme6000_scsi.c
1 /*
2  * Detection routine for the NCR53c710 based BVME6000 SCSI Controllers for Linux.
3  *
4  * Based on work by Alan Hourihane and Kars de Jong
5  *
6  * Rewritten to use 53c700.c by Richard Hirst <richard@sleepie.demon.co.uk>
7  */
8
9 #include <linux/module.h>
10 #include <linux/blkdev.h>
11 #include <linux/device.h>
12 #include <linux/platform_device.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <asm/bvme6000hw.h>
16 #include <scsi/scsi_host.h>
17 #include <scsi/scsi_device.h>
18 #include <scsi/scsi_transport.h>
19 #include <scsi/scsi_transport_spi.h>
20
21 #include "53c700.h"
22
23 MODULE_AUTHOR("Richard Hirst <richard@sleepie.demon.co.uk>");
24 MODULE_DESCRIPTION("BVME6000 NCR53C710 driver");
25 MODULE_LICENSE("GPL");
26
27 static struct scsi_host_template bvme6000_scsi_driver_template = {
28         .name                   = "BVME6000 NCR53c710 SCSI",
29         .proc_name              = "BVME6000",
30         .this_id                = 7,
31         .module                 = THIS_MODULE,
32 };
33
34 static struct platform_device *bvme6000_scsi_device;
35
36 static __devinit int
37 bvme6000_probe(struct device *dev)
38 {
39         struct Scsi_Host *host;
40         struct NCR_700_Host_Parameters *hostdata;
41
42         if (!MACH_IS_BVME6000)
43                 goto out;
44
45         hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
46         if (!hostdata) {
47                 printk(KERN_ERR "bvme6000-scsi: "
48                                 "Failed to allocate host data\n");
49                 goto out;
50         }
51
52         /* Fill in the required pieces of hostdata */
53         hostdata->base = (void __iomem *)BVME_NCR53C710_BASE;
54         hostdata->clock = 40;   /* XXX - depends on the CPU clock! */
55         hostdata->chip710 = 1;
56         hostdata->dmode_extra = DMODE_FC2;
57         hostdata->dcntl_extra = EA_710;
58         hostdata->ctest7_extra = CTEST7_TT1;
59
60         /* and register the chip */
61         host = NCR_700_detect(&bvme6000_scsi_driver_template, hostdata, dev);
62         if (!host) {
63                 printk(KERN_ERR "bvme6000-scsi: No host detected; "
64                                 "board configuration problem?\n");
65                 goto out_free;
66         }
67         host->base = BVME_NCR53C710_BASE;
68         host->this_id = 7;
69         host->irq = BVME_IRQ_SCSI;
70         if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi",
71                         host)) {
72                 printk(KERN_ERR "bvme6000-scsi: request_irq failed\n");
73                 goto out_put_host;
74         }
75
76         dev_set_drvdata(dev, host);
77         scsi_scan_host(host);
78
79         return 0;
80
81  out_put_host:
82         scsi_host_put(host);
83  out_free:
84         kfree(hostdata);
85  out:
86         return -ENODEV;
87 }
88
89 static __devexit int
90 bvme6000_device_remove(struct device *dev)
91 {
92         struct Scsi_Host *host = dev_get_drvdata(dev);
93         struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
94
95         scsi_remove_host(host);
96         NCR_700_release(host);
97         kfree(hostdata);
98         free_irq(host->irq, host);
99
100         return 0;
101 }
102
103 static struct device_driver bvme6000_scsi_driver = {
104         .name   = "bvme6000-scsi",
105         .bus    = &platform_bus_type,
106         .probe  = bvme6000_probe,
107         .remove = __devexit_p(bvme6000_device_remove),
108 };
109
110 static int __init bvme6000_scsi_init(void)
111 {
112         int err;
113
114         err = driver_register(&bvme6000_scsi_driver);
115         if (err)
116                 return err;
117
118         bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi",
119                                                                -1, NULL, 0);
120         if (IS_ERR(bvme6000_scsi_device)) {
121                 driver_unregister(&bvme6000_scsi_driver);
122                 return PTR_ERR(bvme6000_scsi_device);
123         }
124
125         return 0;
126 }
127
128 static void __exit bvme6000_scsi_exit(void)
129 {
130         platform_device_unregister(bvme6000_scsi_device);
131         driver_unregister(&bvme6000_scsi_driver);
132 }
133
134 module_init(bvme6000_scsi_init);
135 module_exit(bvme6000_scsi_exit);