blob: b5fbfd6ce870af0294bb909fa3ea42455bf8a8ae [file] [log] [blame]
Kars de Jong506c7bb2007-06-17 14:47:07 +02001/*
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
23MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>");
24MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
25MODULE_LICENSE("GPL");
26
27static 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
34static struct platform_device *mvme16x_scsi_device;
35
36static __devinit int
Ming Lei7a192ec2009-02-06 23:40:12 +080037mvme16x_probe(struct platform_device *dev)
Kars de Jong506c7bb2007-06-17 14:47:07 +020038{
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
Mariusz Kozlowskibbfbbbc2007-08-11 10:13:24 +020051 hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
Kars de Jong506c7bb2007-06-17 14:47:07 +020052 if (hostdata == NULL) {
53 printk(KERN_ERR "mvme16x-scsi: "
54 "Failed to allocate host data\n");
55 goto out;
56 }
Kars de Jong506c7bb2007-06-17 14:47:07 +020057
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 */
Geert Uytterhoevene5779a52009-03-11 09:23:52 +010067 host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata,
68 &dev->dev);
Kars de Jong506c7bb2007-06-17 14:47:07 +020069 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
Ming Lei7a192ec2009-02-06 23:40:12 +080092 platform_set_drvdata(dev, host);
Kars de Jong506c7bb2007-06-17 14:47:07 +020093 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 __devexit int
Ming Lei7a192ec2009-02-06 23:40:12 +0800106mvme16x_device_remove(struct platform_device *dev)
Kars de Jong506c7bb2007-06-17 14:47:07 +0200107{
Ming Lei7a192ec2009-02-06 23:40:12 +0800108 struct Scsi_Host *host = platform_get_drvdata(dev);
Kars de Jong506c7bb2007-06-17 14:47:07 +0200109 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
Ming Lei7a192ec2009-02-06 23:40:12 +0800127static 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),
Kars de Jong506c7bb2007-06-17 14:47:07 +0200134};
135
136static int __init mvme16x_scsi_init(void)
137{
138 int err;
139
Ming Lei7a192ec2009-02-06 23:40:12 +0800140 err = platform_driver_register(&mvme16x_scsi_driver);
Kars de Jong506c7bb2007-06-17 14:47:07 +0200141 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)) {
Ming Lei7a192ec2009-02-06 23:40:12 +0800147 platform_driver_unregister(&mvme16x_scsi_driver);
Kars de Jong506c7bb2007-06-17 14:47:07 +0200148 return PTR_ERR(mvme16x_scsi_device);
149 }
150
151 return 0;
152}
153
154static void __exit mvme16x_scsi_exit(void)
155{
156 platform_device_unregister(mvme16x_scsi_device);
Ming Lei7a192ec2009-02-06 23:40:12 +0800157 platform_driver_unregister(&mvme16x_scsi_driver);
Kars de Jong506c7bb2007-06-17 14:47:07 +0200158}
159
160module_init(mvme16x_scsi_init);
161module_exit(mvme16x_scsi_exit);