/* * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux. * Amiga Technologies A4000T SCSI controller. * * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk> * plus modifications of the 53c7xx.c driver to support the Amiga. * * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org> */ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/slab.h> #include <asm/amigahw.h> #include <asm/amigaints.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport_spi.h> #include "53c700.h" static struct scsi_host_template a4000t_scsi_driver_template = { .name = "A4000T builtin SCSI", .proc_name = "A4000t", .this_id = 7, .module = THIS_MODULE, }; #define A4000T_SCSI_OFFSET 0x40 static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev) { struct resource *res; phys_addr_t scsi_addr; struct NCR_700_Host_Parameters *hostdata; struct Scsi_Host *host; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) return -ENODEV; if (!request_mem_region(res->start, resource_size(res), "A4000T builtin SCSI")) return -EBUSY; hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); if (!hostdata) { dev_err(&pdev->dev, "Failed to allocate host data\n"); goto out_release; } scsi_addr = res->start + A4000T_SCSI_OFFSET; /* Fill in the required pieces of hostdata */ hostdata->base = (void __iomem *)ZTWO_VADDR(scsi_addr); hostdata->clock = 50; hostdata->chip710 = 1; hostdata->dmode_extra = DMODE_FC2; hostdata->dcntl_extra = EA_710; /* and register the chip */ host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, &pdev->dev); if (!host) { dev_err(&pdev->dev, "No host detected; board configuration problem?\n"); goto out_free; } host->this_id = 7; host->base = scsi_addr; host->irq = IRQ_AMIGA_PORTS; if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi", host)) { dev_err(&pdev->dev, "request_irq failed\n"); goto out_put_host; } platform_set_drvdata(pdev, host); scsi_scan_host(host); return 0; out_put_host: scsi_host_put(host); out_free: kfree(hostdata); out_release: release_mem_region(res->start, resource_size(res)); return -ENODEV; } static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev) { struct Scsi_Host *host = platform_get_drvdata(pdev); struct NCR_700_Host_Parameters *hostdata = shost_priv(host); struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); scsi_remove_host(host); NCR_700_release(host); kfree(hostdata); free_irq(host->irq, host); release_mem_region(res->start, resource_size(res)); return 0; } static struct platform_driver amiga_a4000t_scsi_driver = { .remove = __exit_p(amiga_a4000t_scsi_remove), .driver = { .name = "amiga-a4000t-scsi", .owner = THIS_MODULE, }, }; static int __init amiga_a4000t_scsi_init(void) { return platform_driver_probe(&amiga_a4000t_scsi_driver, amiga_a4000t_scsi_probe); } module_init(amiga_a4000t_scsi_init); static void __exit amiga_a4000t_scsi_exit(void) { platform_driver_unregister(&amiga_a4000t_scsi_driver); } module_exit(amiga_a4000t_scsi_exit); MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / " "Kars de Jong <jongk@linux-m68k.org>"); MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:amiga-a4000t-scsi");