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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
24MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>");
25MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
26MODULE_LICENSE("GPL");
27
28static 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
35static struct platform_device *mvme16x_scsi_device;
36
37static int 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
105static int mvme16x_device_remove(struct platform_device *dev)
106{
107 struct Scsi_Host *host = platform_get_drvdata(dev);
108 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
109
110 /* Disable scsi chip ints */
111 {
112 volatile unsigned long v;
113
114 v = in_be32(0xfff4202c);
115 v &= ~0x10;
116 out_be32(0xfff4202c, v);
117 }
118 scsi_remove_host(host);
119 NCR_700_release(host);
120 kfree(hostdata);
121 free_irq(host->irq, host);
122
123 return 0;
124}
125
126static struct platform_driver mvme16x_scsi_driver = {
127 .driver = {
128 .name = "mvme16x-scsi",
129 },
130 .probe = mvme16x_probe,
131 .remove = mvme16x_device_remove,
132};
133
134static int __init mvme16x_scsi_init(void)
135{
136 int err;
137
138 err = platform_driver_register(&mvme16x_scsi_driver);
139 if (err)
140 return err;
141
142 mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
143 -1, NULL, 0);
144 if (IS_ERR(mvme16x_scsi_device)) {
145 platform_driver_unregister(&mvme16x_scsi_driver);
146 return PTR_ERR(mvme16x_scsi_device);
147 }
148
149 return 0;
150}
151
152static void __exit mvme16x_scsi_exit(void)
153{
154 platform_device_unregister(mvme16x_scsi_device);
155 platform_driver_unregister(&mvme16x_scsi_driver);
156}
157
158module_init(mvme16x_scsi_init);
159module_exit(mvme16x_scsi_exit);
160

Warning: That file was not part of the compilation database. It may have many parsing errors.