mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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a24a6b2225
Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/*
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* Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
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* Amiga Technologies A4000T SCSI controller.
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*
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* Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
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* plus modifications of the 53c7xx.c driver to support the Amiga.
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*
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* Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/slab.h>
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#include <asm/amigahw.h>
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#include <asm/amigaints.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_transport_spi.h>
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#include "53c700.h"
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static struct scsi_host_template a4000t_scsi_driver_template = {
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.name = "A4000T builtin SCSI",
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.proc_name = "A4000t",
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.this_id = 7,
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.module = THIS_MODULE,
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};
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#define A4000T_SCSI_OFFSET 0x40
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static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev)
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{
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struct resource *res;
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phys_addr_t scsi_addr;
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struct NCR_700_Host_Parameters *hostdata;
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struct Scsi_Host *host;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -ENODEV;
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if (!request_mem_region(res->start, resource_size(res),
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"A4000T builtin SCSI"))
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return -EBUSY;
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hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters),
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GFP_KERNEL);
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if (!hostdata) {
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dev_err(&pdev->dev, "Failed to allocate host data\n");
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goto out_release;
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}
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scsi_addr = res->start + A4000T_SCSI_OFFSET;
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/* Fill in the required pieces of hostdata */
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hostdata->base = (void __iomem *)ZTWO_VADDR(scsi_addr);
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hostdata->clock = 50;
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hostdata->chip710 = 1;
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hostdata->dmode_extra = DMODE_FC2;
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hostdata->dcntl_extra = EA_710;
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/* and register the chip */
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host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata,
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&pdev->dev);
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if (!host) {
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dev_err(&pdev->dev,
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"No host detected; board configuration problem?\n");
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goto out_free;
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}
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host->this_id = 7;
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host->base = scsi_addr;
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host->irq = IRQ_AMIGA_PORTS;
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if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
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host)) {
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dev_err(&pdev->dev, "request_irq failed\n");
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goto out_put_host;
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}
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platform_set_drvdata(pdev, host);
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scsi_scan_host(host);
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return 0;
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out_put_host:
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scsi_host_put(host);
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out_free:
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kfree(hostdata);
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out_release:
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release_mem_region(res->start, resource_size(res));
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return -ENODEV;
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}
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static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev)
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{
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struct Scsi_Host *host = platform_get_drvdata(pdev);
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struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
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struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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scsi_remove_host(host);
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NCR_700_release(host);
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kfree(hostdata);
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free_irq(host->irq, host);
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release_mem_region(res->start, resource_size(res));
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return 0;
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}
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static struct platform_driver amiga_a4000t_scsi_driver = {
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.remove = __exit_p(amiga_a4000t_scsi_remove),
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.driver = {
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.name = "amiga-a4000t-scsi",
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.owner = THIS_MODULE,
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},
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};
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static int __init amiga_a4000t_scsi_init(void)
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{
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return platform_driver_probe(&amiga_a4000t_scsi_driver,
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amiga_a4000t_scsi_probe);
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}
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module_init(amiga_a4000t_scsi_init);
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static void __exit amiga_a4000t_scsi_exit(void)
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{
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platform_driver_unregister(&amiga_a4000t_scsi_driver);
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}
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module_exit(amiga_a4000t_scsi_exit);
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MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / "
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"Kars de Jong <jongk@linux-m68k.org>");
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MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:amiga-a4000t-scsi");
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