2 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
3 * Amiga Technologies A4000T SCSI controller.
5 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
6 * plus modifications of the 53c7xx.c driver to support the Amiga.
8 * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
11 #include <linux/module.h>
12 #include <linux/platform_device.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <asm/amigaints.h>
16 #include <scsi/scsi_host.h>
17 #include <scsi/scsi_transport_spi.h>
21 MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
22 MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
23 MODULE_LICENSE("GPL");
26 static struct scsi_host_template a4000t_scsi_driver_template = {
27 .name = "A4000T builtin SCSI",
28 .proc_name = "A4000t",
30 .module = THIS_MODULE,
33 static struct platform_device *a4000t_scsi_device;
35 #define A4000T_SCSI_ADDR 0xdd0040
37 static int __devinit a4000t_probe(struct device *dev)
39 struct Scsi_Host * host = NULL;
40 struct NCR_700_Host_Parameters *hostdata;
42 if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
45 if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
46 "A4000T builtin SCSI"))
49 hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
50 if (hostdata == NULL) {
51 printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
54 memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
56 /* Fill in the required pieces of hostdata */
57 hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
59 hostdata->chip710 = 1;
60 hostdata->dmode_extra = DMODE_FC2;
61 hostdata->dcntl_extra = EA_710;
63 /* and register the chip */
64 host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev);
66 printk(KERN_ERR "a4000t-scsi: No host detected; "
67 "board configuration problem?\n");
72 host->base = A4000T_SCSI_ADDR;
73 host->irq = IRQ_AMIGA_PORTS;
75 if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
77 printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
90 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
95 static __devexit int a4000t_device_remove(struct device *dev)
97 struct Scsi_Host *host = dev_to_shost(dev);
98 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
100 scsi_remove_host(host);
102 NCR_700_release(host);
104 free_irq(host->irq, host);
105 release_mem_region(A4000T_SCSI_ADDR, 0x1000);
110 static struct device_driver a4000t_scsi_driver = {
111 .name = "a4000t-scsi",
112 .bus = &platform_bus_type,
113 .probe = a4000t_probe,
114 .remove = __devexit_p(a4000t_device_remove),
117 static int __init a4000t_scsi_init(void)
121 err = driver_register(&a4000t_scsi_driver);
125 a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
127 if (IS_ERR(a4000t_scsi_device)) {
128 driver_unregister(&a4000t_scsi_driver);
129 return PTR_ERR(a4000t_scsi_device);
135 static void __exit a4000t_scsi_exit(void)
137 platform_device_unregister(a4000t_scsi_device);
138 driver_unregister(&a4000t_scsi_driver);
141 module_init(a4000t_scsi_init);
142 module_exit(a4000t_scsi_exit);