include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[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 <linux/slab.h>
16 #include <asm/mvme16xhw.h>
17 #include <scsi/scsi_host.h>
18 #include <scsi/scsi_device.h>
19 #include <scsi/scsi_transport.h>
20 #include <scsi/scsi_transport_spi.h>
21
22 #include "53c700.h"
23
24 MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>");
25 MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
26 MODULE_LICENSE("GPL");
27
28 static struct scsi_host_template mvme16x_scsi_driver_template = {
29         .name                   = "MVME16x NCR53c710 SCSI",
30         .proc_name              = "MVME16x",
31         .this_id                = 7,
32         .module                 = THIS_MODULE,
33 };
34
35 static struct platform_device *mvme16x_scsi_device;
36
37 static __devinit int
38 mvme16x_probe(struct platform_device *dev)
39 {
40         struct Scsi_Host * host = NULL;
41         struct NCR_700_Host_Parameters *hostdata;
42
43         if (!MACH_IS_MVME16x)
44                 goto out;
45
46         if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
47                 printk(KERN_INFO "mvme16x-scsi: detection disabled, "
48                                  "SCSI chip not present\n");
49                 goto out;
50         }
51
52         hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
53         if (hostdata == NULL) {
54                 printk(KERN_ERR "mvme16x-scsi: "
55                                 "Failed to allocate host data\n");
56                 goto out;
57         }
58
59         /* Fill in the required pieces of hostdata */
60         hostdata->base = (void __iomem *)0xfff47000UL;
61         hostdata->clock = 50;   /* XXX - depends on the CPU clock! */
62         hostdata->chip710 = 1;
63         hostdata->dmode_extra = DMODE_FC2;
64         hostdata->dcntl_extra = EA_710;
65         hostdata->ctest7_extra = CTEST7_TT1;
66
67         /* and register the chip */
68         host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata,
69                               &dev->dev);
70         if (!host) {
71                 printk(KERN_ERR "mvme16x-scsi: No host detected; "
72                                 "board configuration problem?\n");
73                 goto out_free;
74         }
75         host->this_id = 7;
76         host->base = 0xfff47000UL;
77         host->irq = MVME16x_IRQ_SCSI;
78         if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) {
79                 printk(KERN_ERR "mvme16x-scsi: request_irq failed\n");
80                 goto out_put_host;
81         }
82
83         /* Enable scsi chip ints */
84         {
85                 volatile unsigned long v;
86
87                 /* Enable scsi interrupts at level 4 in PCCchip2 */
88                 v = in_be32(0xfff4202c);
89                 v = (v & ~0xff) | 0x10 | 4;
90                 out_be32(0xfff4202c, v);
91         }
92
93         platform_set_drvdata(dev, host);
94         scsi_scan_host(host);
95
96         return 0;
97
98  out_put_host:
99         scsi_host_put(host);
100  out_free:
101         kfree(hostdata);
102  out:
103         return -ENODEV;
104 }
105
106 static __devexit int
107 mvme16x_device_remove(struct platform_device *dev)
108 {
109         struct Scsi_Host *host = platform_get_drvdata(dev);
110         struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
111
112         /* Disable scsi chip ints */
113         {
114                 volatile unsigned long v;
115
116                 v = in_be32(0xfff4202c);
117                 v &= ~0x10;
118                 out_be32(0xfff4202c, v);
119         }
120         scsi_remove_host(host);
121         NCR_700_release(host);
122         kfree(hostdata);
123         free_irq(host->irq, host);
124
125         return 0;
126 }
127
128 static struct platform_driver mvme16x_scsi_driver = {
129         .driver = {
130                 .name           = "mvme16x-scsi",
131                 .owner          = THIS_MODULE,
132         },
133         .probe          = mvme16x_probe,
134         .remove         = __devexit_p(mvme16x_device_remove),
135 };
136
137 static int __init mvme16x_scsi_init(void)
138 {
139         int err;
140
141         err = platform_driver_register(&mvme16x_scsi_driver);
142         if (err)
143                 return err;
144
145         mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
146                                                               -1, NULL, 0);
147         if (IS_ERR(mvme16x_scsi_device)) {
148                 platform_driver_unregister(&mvme16x_scsi_driver);
149                 return PTR_ERR(mvme16x_scsi_device);
150         }
151
152         return 0;
153 }
154
155 static void __exit mvme16x_scsi_exit(void)
156 {
157         platform_device_unregister(mvme16x_scsi_device);
158         platform_driver_unregister(&mvme16x_scsi_driver);
159 }
160
161 module_init(mvme16x_scsi_init);
162 module_exit(mvme16x_scsi_exit);