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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | /* * 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 <jongk@linux-m68k.org> */ #include <linux/module.h> #include <linux/blkdev.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/slab.h> #include <asm/mvme16xhw.h> #include <scsi/scsi_host.h> #include <scsi/scsi_device.h> #include <scsi/scsi_transport.h> #include <scsi/scsi_transport_spi.h> #include "53c700.h" MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>"); 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 int 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); return 0; } static struct platform_driver mvme16x_scsi_driver = { .driver = { .name = "mvme16x-scsi", .owner = THIS_MODULE, }, .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); |