blob: 11ae6be8aeaf81ee466609eff419961d82c76d19 [file] [log] [blame]
Kars de Jonga16efc12007-06-17 14:47:08 +02001/*
2 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
3 * Amiga Technologies A4000T SCSI controller.
4 *
5 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
6 * plus modifications of the 53c7xx.c driver to support the Amiga.
7 *
8 * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
9 */
10
11#include <linux/module.h>
12#include <linux/platform_device.h>
13#include <linux/init.h>
14#include <linux/interrupt.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090015#include <linux/slab.h>
Geert Uytterhoeven96249cf2007-06-19 09:47:28 +020016#include <asm/amigahw.h>
Kars de Jonga16efc12007-06-17 14:47:08 +020017#include <asm/amigaints.h>
18#include <scsi/scsi_host.h>
19#include <scsi/scsi_transport_spi.h>
20
21#include "53c700.h"
22
23MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
24MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
25MODULE_LICENSE("GPL");
26
27
28static struct scsi_host_template a4000t_scsi_driver_template = {
29 .name = "A4000T builtin SCSI",
30 .proc_name = "A4000t",
31 .this_id = 7,
32 .module = THIS_MODULE,
33};
34
35static struct platform_device *a4000t_scsi_device;
36
37#define A4000T_SCSI_ADDR 0xdd0040
38
Ming Lei7a192ec2009-02-06 23:40:12 +080039static int __devinit a4000t_probe(struct platform_device *dev)
Kars de Jonga16efc12007-06-17 14:47:08 +020040{
Mariusz Kozlowskibbfbbbc2007-08-11 10:13:24 +020041 struct Scsi_Host *host;
Kars de Jonga16efc12007-06-17 14:47:08 +020042 struct NCR_700_Host_Parameters *hostdata;
43
44 if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
45 goto out;
46
47 if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
48 "A4000T builtin SCSI"))
49 goto out;
50
Mariusz Kozlowskibbfbbbc2007-08-11 10:13:24 +020051 hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
52 if (!hostdata) {
Kars de Jonga16efc12007-06-17 14:47:08 +020053 printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
54 goto out_release;
55 }
Kars de Jonga16efc12007-06-17 14:47:08 +020056
57 /* Fill in the required pieces of hostdata */
58 hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
59 hostdata->clock = 50;
60 hostdata->chip710 = 1;
61 hostdata->dmode_extra = DMODE_FC2;
62 hostdata->dcntl_extra = EA_710;
63
64 /* and register the chip */
Geert Uytterhoevene5779a52009-03-11 09:23:52 +010065 host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata,
66 &dev->dev);
Kars de Jonga16efc12007-06-17 14:47:08 +020067 if (!host) {
68 printk(KERN_ERR "a4000t-scsi: No host detected; "
69 "board configuration problem?\n");
70 goto out_free;
71 }
72
73 host->this_id = 7;
74 host->base = A4000T_SCSI_ADDR;
75 host->irq = IRQ_AMIGA_PORTS;
76
77 if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
78 host)) {
79 printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
80 goto out_put_host;
81 }
82
Ming Lei7a192ec2009-02-06 23:40:12 +080083 platform_set_drvdata(dev, host);
Kars de Jonga16efc12007-06-17 14:47:08 +020084 scsi_scan_host(host);
85
86 return 0;
87
88 out_put_host:
89 scsi_host_put(host);
90 out_free:
91 kfree(hostdata);
92 out_release:
93 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
94 out:
95 return -ENODEV;
96}
97
Ming Lei7a192ec2009-02-06 23:40:12 +080098static __devexit int a4000t_device_remove(struct platform_device *dev)
Kars de Jonga16efc12007-06-17 14:47:08 +020099{
Ming Lei7a192ec2009-02-06 23:40:12 +0800100 struct Scsi_Host *host = platform_get_drvdata(dev);
Kars de Jonga16efc12007-06-17 14:47:08 +0200101 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
102
103 scsi_remove_host(host);
104
105 NCR_700_release(host);
106 kfree(hostdata);
107 free_irq(host->irq, host);
108 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
109
110 return 0;
111}
112
Ming Lei7a192ec2009-02-06 23:40:12 +0800113static struct platform_driver a4000t_scsi_driver = {
114 .driver = {
115 .name = "a4000t-scsi",
116 .owner = THIS_MODULE,
117 },
118 .probe = a4000t_probe,
119 .remove = __devexit_p(a4000t_device_remove),
Kars de Jonga16efc12007-06-17 14:47:08 +0200120};
121
122static int __init a4000t_scsi_init(void)
123{
124 int err;
125
Ming Lei7a192ec2009-02-06 23:40:12 +0800126 err = platform_driver_register(&a4000t_scsi_driver);
Kars de Jonga16efc12007-06-17 14:47:08 +0200127 if (err)
128 return err;
129
130 a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
131 -1, NULL, 0);
132 if (IS_ERR(a4000t_scsi_device)) {
Geert Uytterhoeven2d138ae2009-04-09 21:22:42 +0200133 platform_driver_unregister(&a4000t_scsi_driver);
Kars de Jonga16efc12007-06-17 14:47:08 +0200134 return PTR_ERR(a4000t_scsi_device);
135 }
136
137 return err;
138}
139
140static void __exit a4000t_scsi_exit(void)
141{
142 platform_device_unregister(a4000t_scsi_device);
Ming Lei7a192ec2009-02-06 23:40:12 +0800143 platform_driver_unregister(&a4000t_scsi_driver);
Kars de Jonga16efc12007-06-17 14:47:08 +0200144}
145
146module_init(a4000t_scsi_init);
147module_exit(a4000t_scsi_exit);