blob: 1a79e1847d17d73b564273df5c4d770f33ae6231 [file] [log] [blame]
Kars de Jong8276b582007-06-17 14:47:06 +02001/*
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
23MODULE_AUTHOR("Richard Hirst <richard@sleepie.demon.co.uk>");
24MODULE_DESCRIPTION("BVME6000 NCR53C710 driver");
25MODULE_LICENSE("GPL");
26
27static 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
34static struct platform_device *bvme6000_scsi_device;
35
36static __devinit int
37bvme6000_probe(struct device *dev)
38{
39 struct Scsi_Host * host = NULL;
40 struct NCR_700_Host_Parameters *hostdata;
41
42 if (!MACH_IS_BVME6000)
43 goto out;
44
45 hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
46 if (hostdata == NULL) {
47 printk(KERN_ERR "bvme6000-scsi: "
48 "Failed to allocate host data\n");
49 goto out;
50 }
51 memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
52
53 /* Fill in the required pieces of hostdata */
54 hostdata->base = (void __iomem *)BVME_NCR53C710_BASE;
55 hostdata->clock = 40; /* XXX - depends on the CPU clock! */
56 hostdata->chip710 = 1;
57 hostdata->dmode_extra = DMODE_FC2;
58 hostdata->dcntl_extra = EA_710;
59 hostdata->ctest7_extra = CTEST7_TT1;
60
61 /* and register the chip */
62 host = NCR_700_detect(&bvme6000_scsi_driver_template, hostdata, dev);
63 if (!host) {
64 printk(KERN_ERR "bvme6000-scsi: No host detected; "
65 "board configuration problem?\n");
66 goto out_free;
67 }
68 host->base = BVME_NCR53C710_BASE;
69 host->this_id = 7;
70 host->irq = BVME_IRQ_SCSI;
71 if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi",
72 host)) {
73 printk(KERN_ERR "bvme6000-scsi: request_irq failed\n");
74 goto out_put_host;
75 }
76
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
89static __devexit int
90bvme6000_device_remove(struct device *dev)
91{
92 struct Scsi_Host *host = dev_to_shost(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
103static 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
110static 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
128static void __exit bvme6000_scsi_exit(void)
129{
130 platform_device_unregister(bvme6000_scsi_device);
131 driver_unregister(&bvme6000_scsi_driver);
132}
133
134module_init(bvme6000_scsi_init);
135module_exit(bvme6000_scsi_exit);