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mvme16x_scsi.c


products/sources/formale Sprachen/C/Linux/drivers/scsi/mvme16x_scsi.c

// SPDX-License-Identifier: GPL-2.0-only /* * Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux. * * Based on work by Alan Hourihane * * Rewritten to use 53c700.c by Kars de Jong */ #include #include #include #include #include #include #include #include #include #include #include #include #include "53c700.h" MODULE_AUTHOR("Kars de Jong "); MODULE_DESCRIPTION("MVME16x NCR53C710 driver"); MODULE_LICENSE("GPL"); static struct scsi_host_template mvme16x_scsi_driver_template = { .name = "MVME16x NCR53c710 SCSI", .proc_name = "MVME16x", .this_id = 7, .module = THIS_MODULE, }; static struct platform_device *mvme16x_scsi_device; static int mvme16x_probe(struct platform_device *dev) { struct Scsi_Host * host = NULL; struct NCR_700_Host_Parameters *hostdata; if (!MACH_IS_MVME16x) goto out; if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) { printk(KERN_INFO "mvme16x-scsi: detection disabled, " "SCSI chip not present\n"); goto out; } hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); if (hostdata == NULL) { printk(KERN_ERR "mvme16x-scsi: " "Failed to allocate host data\n"); goto out; } /* Fill in the required pieces of hostdata */ hostdata->base = (void __iomem *)0xfff47000UL; hostdata->clock = 50; /* XXX - depends on the CPU clock! */ hostdata->chip710 = 1; hostdata->dmode_extra = DMODE_FC2; hostdata->dcntl_extra = EA_710; hostdata->ctest7_extra = CTEST7_TT1; /* and register the chip */ host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata, &dev->dev); if (!host) { printk(KERN_ERR "mvme16x-scsi: No host detected; " "board configuration problem?\n"); goto out_free; } host->this_id = 7; host->base = 0xfff47000UL; host->irq = MVME16x_IRQ_SCSI; if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) { printk(KERN_ERR "mvme16x-scsi: request_irq failed\n"); goto out_put_host; } /* Enable scsi chip ints */ { volatile unsigned long v; /* Enable scsi interrupts at level 4 in PCCchip2 */ v = in_be32(0xfff4202c); v = (v & ~0xff) | 0x10 | 4; out_be32(0xfff4202c, v); } platform_set_drvdata(dev, host); scsi_scan_host(host); return 0; out_put_host: scsi_host_put(host); out_free: kfree(hostdata); out: return -ENODEV; } static void mvme16x_device_remove(struct platform_device *dev) { struct Scsi_Host *host = platform_get_drvdata(dev); struct NCR_700_Host_Parameters *hostdata = shost_priv(host); /* Disable scsi chip ints */ { volatile unsigned long v; v = in_be32(0xfff4202c); v &= ~0x10; out_be32(0xfff4202c, v); } scsi_remove_host(host); NCR_700_release(host); kfree(hostdata); free_irq(host->irq, host); } static struct platform_driver mvme16x_scsi_driver = { .driver = { .name = "mvme16x-scsi", }, .probe = mvme16x_probe, .remove = mvme16x_device_remove, }; static int __init mvme16x_scsi_init(void) { int err; err = platform_driver_register(&mvme16x_scsi_driver); if (err) return err; mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi", -1, NULL, 0); if (IS_ERR(mvme16x_scsi_device)) { platform_driver_unregister(&mvme16x_scsi_driver); return PTR_ERR(mvme16x_scsi_device); } return 0; } static void __exit mvme16x_scsi_exit(void) { platform_device_unregister(mvme16x_scsi_device); platform_driver_unregister(&mvme16x_scsi_driver); } module_init(mvme16x_scsi_init); module_exit(mvme16x_scsi_exit);

                                                                                                                                                                                                                                                                                                                                                                                                     

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