scsi/m68k: Kill NCR_700_detect() warnings
[linux-2.6.git] / drivers / scsi / mvme16x_scsi.c
1 /*
2  * Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux.
3  *
4  * Based on work by Alan Hourihane
5  *
6  * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
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/mvme16xhw.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("Kars de Jong <jongk@linux-m68k.org>");
24 MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
25 MODULE_LICENSE("GPL");
26
27 static struct scsi_host_template mvme16x_scsi_driver_template = {
28         .name                   = "MVME16x NCR53c710 SCSI",
29         .proc_name              = "MVME16x",
30         .this_id                = 7,
31         .module                 = THIS_MODULE,
32 };
33
34 static struct platform_device *mvme16x_scsi_device;
35
36 static __devinit int
37 mvme16x_probe(struct platform_device *dev)
38 {
39         struct Scsi_Host * host = NULL;
40         struct NCR_700_Host_Parameters *hostdata;
41
42         if (!MACH_IS_MVME16x)
43                 goto out;
44
45         if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
46                 printk(KERN_INFO "mvme16x-scsi: detection disabled, "
47                                  "SCSI chip not present\n");
48                 goto out;
49         }
50
51         hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
52         if (hostdata == NULL) {
53                 printk(KERN_ERR "mvme16x-scsi: "
54                                 "Failed to allocate host data\n");
55                 goto out;
56         }
57
58         /* Fill in the required pieces of hostdata */
59         hostdata->base = (void __iomem *)0xfff47000UL;
60         hostdata->clock = 50;   /* XXX - depends on the CPU clock! */
61         hostdata->chip710 = 1;
62         hostdata->dmode_extra = DMODE_FC2;
63         hostdata->dcntl_extra = EA_710;
64         hostdata->ctest7_extra = CTEST7_TT1;
65
66         /* and register the chip */
67         host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata,
68                               &dev->dev);
69         if (!host) {
70                 printk(KERN_ERR "mvme16x-scsi: No host detected; "
71                                 "board configuration problem?\n");
72                 goto out_free;
73         }
74         host->this_id = 7;
75         host->base = 0xfff47000UL;
76         host->irq = MVME16x_IRQ_SCSI;
77         if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) {
78                 printk(KERN_ERR "mvme16x-scsi: request_irq failed\n");
79                 goto out_put_host;
80         }
81
82         /* Enable scsi chip ints */
83         {
84                 volatile unsigned long v;
85
86                 /* Enable scsi interrupts at level 4 in PCCchip2 */
87                 v = in_be32(0xfff4202c);
88                 v = (v & ~0xff) | 0x10 | 4;
89                 out_be32(0xfff4202c, v);
90         }
91
92         platform_set_drvdata(dev, host);
93         scsi_scan_host(host);
94
95         return 0;
96
97  out_put_host:
98         scsi_host_put(host);
99  out_free:
100         kfree(hostdata);
101  out:
102         return -ENODEV;
103 }
104
105 static __devexit int
106 mvme16x_device_remove(struct platform_device *dev)
107 {
108         struct Scsi_Host *host = platform_get_drvdata(dev);
109         struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
110
111         /* Disable scsi chip ints */
112         {
113                 volatile unsigned long v;
114
115                 v = in_be32(0xfff4202c);
116                 v &= ~0x10;
117                 out_be32(0xfff4202c, v);
118         }
119         scsi_remove_host(host);
120         NCR_700_release(host);
121         kfree(hostdata);
122         free_irq(host->irq, host);
123
124         return 0;
125 }
126
127 static struct platform_driver mvme16x_scsi_driver = {
128         .driver = {
129                 .name           = "mvme16x-scsi",
130                 .owner          = THIS_MODULE,
131         },
132         .probe          = mvme16x_probe,
133         .remove         = __devexit_p(mvme16x_device_remove),
134 };
135
136 static int __init mvme16x_scsi_init(void)
137 {
138         int err;
139
140         err = platform_driver_register(&mvme16x_scsi_driver);
141         if (err)
142                 return err;
143
144         mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
145                                                               -1, NULL, 0);
146         if (IS_ERR(mvme16x_scsi_device)) {
147                 platform_driver_unregister(&mvme16x_scsi_driver);
148                 return PTR_ERR(mvme16x_scsi_device);
149         }
150
151         return 0;
152 }
153
154 static void __exit mvme16x_scsi_exit(void)
155 {
156         platform_device_unregister(mvme16x_scsi_device);
157         platform_driver_unregister(&mvme16x_scsi_driver);
158 }
159
160 module_init(mvme16x_scsi_init);
161 module_exit(mvme16x_scsi_exit);