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 <linux/slab.h>
16 #include <asm/amigahw.h>
17 #include <asm/amigaints.h>
18 #include <scsi/scsi_host.h>
19 #include <scsi/scsi_transport_spi.h>
24 static struct scsi_host_template a4000t_scsi_driver_template = {
25 .name = "A4000T builtin SCSI",
26 .proc_name = "A4000t",
28 .module = THIS_MODULE,
32 #define A4000T_SCSI_OFFSET 0x40
34 static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev)
37 phys_addr_t scsi_addr;
38 struct NCR_700_Host_Parameters *hostdata;
39 struct Scsi_Host *host;
41 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
45 if (!request_mem_region(res->start, resource_size(res),
46 "A4000T builtin SCSI"))
49 hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters),
52 dev_err(&pdev->dev, "Failed to allocate host data\n");
56 scsi_addr = res->start + A4000T_SCSI_OFFSET;
58 /* Fill in the required pieces of hostdata */
59 hostdata->base = ZTWO_VADDR(scsi_addr);
61 hostdata->chip710 = 1;
62 hostdata->dmode_extra = DMODE_FC2;
63 hostdata->dcntl_extra = EA_710;
65 /* and register the chip */
66 host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata,
70 "No host detected; board configuration problem?\n");
75 host->base = scsi_addr;
76 host->irq = IRQ_AMIGA_PORTS;
78 if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
80 dev_err(&pdev->dev, "request_irq failed\n");
84 platform_set_drvdata(pdev, host);
93 release_mem_region(res->start, resource_size(res));
97 static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev)
99 struct Scsi_Host *host = platform_get_drvdata(pdev);
100 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
101 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
103 scsi_remove_host(host);
104 NCR_700_release(host);
106 free_irq(host->irq, host);
107 release_mem_region(res->start, resource_size(res));
111 static struct platform_driver amiga_a4000t_scsi_driver = {
112 .remove = __exit_p(amiga_a4000t_scsi_remove),
114 .name = "amiga-a4000t-scsi",
118 module_platform_driver_probe(amiga_a4000t_scsi_driver, amiga_a4000t_scsi_probe);
120 MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / "
121 "Kars de Jong <jongk@linux-m68k.org>");
122 MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
123 MODULE_LICENSE("GPL");
124 MODULE_ALIAS("platform:amiga-a4000t-scsi");