1 /* 2 * Detection routine for the NCR53c710 based BVME6000 SCSI Controllers for Linux. 3 * 4 * Based on work by Alan Hourihane and Kars de Jong 5 * 6 * Rewritten to use 53c700.c by Richard Hirst <richard@sleepie.demon.co.uk> 7 */ 8 9 #include <linux/module.h> 10 #include <linux/blkdev.h> 11 #include <linux/device.h> 12 #include <linux/platform_device.h> 13 #include <linux/init.h> 14 #include <linux/interrupt.h> 15 #include <asm/bvme6000hw.h> 16 #include <scsi/scsi_host.h> 17 #include <scsi/scsi_device.h> 18 #include <scsi/scsi_transport.h> 19 #include <scsi/scsi_transport_spi.h> 20 21 #include "53c700.h" 22 23 MODULE_AUTHOR("Richard Hirst <richard@sleepie.demon.co.uk>"); 24 MODULE_DESCRIPTION("BVME6000 NCR53C710 driver"); 25 MODULE_LICENSE("GPL"); 26 27 static struct scsi_host_template bvme6000_scsi_driver_template = { 28 .name = "BVME6000 NCR53c710 SCSI", 29 .proc_name = "BVME6000", 30 .this_id = 7, 31 .module = THIS_MODULE, 32 }; 33 34 static struct platform_device *bvme6000_scsi_device; 35 36 static __devinit int 37 bvme6000_probe(struct platform_device *dev) 38 { 39 struct Scsi_Host *host; 40 struct NCR_700_Host_Parameters *hostdata; 41 42 if (!MACH_IS_BVME6000) 43 goto out; 44 45 hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); 46 if (!hostdata) { 47 printk(KERN_ERR "bvme6000-scsi: " 48 "Failed to allocate host data\n"); 49 goto out; 50 } 51 52 /* Fill in the required pieces of hostdata */ 53 hostdata->base = (void __iomem *)BVME_NCR53C710_BASE; 54 hostdata->clock = 40; /* XXX - depends on the CPU clock! */ 55 hostdata->chip710 = 1; 56 hostdata->dmode_extra = DMODE_FC2; 57 hostdata->dcntl_extra = EA_710; 58 hostdata->ctest7_extra = CTEST7_TT1; 59 60 /* and register the chip */ 61 host = NCR_700_detect(&bvme6000_scsi_driver_template, hostdata, dev); 62 if (!host) { 63 printk(KERN_ERR "bvme6000-scsi: No host detected; " 64 "board configuration problem?\n"); 65 goto out_free; 66 } 67 host->base = BVME_NCR53C710_BASE; 68 host->this_id = 7; 69 host->irq = BVME_IRQ_SCSI; 70 if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi", 71 host)) { 72 printk(KERN_ERR "bvme6000-scsi: request_irq failed\n"); 73 goto out_put_host; 74 } 75 76 platform_set_drvdata(dev, host); 77 scsi_scan_host(host); 78 79 return 0; 80 81 out_put_host: 82 scsi_host_put(host); 83 out_free: 84 kfree(hostdata); 85 out: 86 return -ENODEV; 87 } 88 89 static __devexit int 90 bvme6000_device_remove(struct platform_device *dev) 91 { 92 struct Scsi_Host *host = platform_get_drvdata(dev); 93 struct NCR_700_Host_Parameters *hostdata = shost_priv(host); 94 95 scsi_remove_host(host); 96 NCR_700_release(host); 97 kfree(hostdata); 98 free_irq(host->irq, host); 99 100 return 0; 101 } 102 103 static struct platform_driver bvme6000_scsi_driver = { 104 .driver = { 105 .name = "bvme6000-scsi", 106 .owner = THIS_MODULE, 107 }, 108 .probe = bvme6000_probe, 109 .remove = __devexit_p(bvme6000_device_remove), 110 }; 111 112 static int __init bvme6000_scsi_init(void) 113 { 114 int err; 115 116 err = platform_driver_register(&bvme6000_scsi_driver); 117 if (err) 118 return err; 119 120 bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi", 121 -1, NULL, 0); 122 if (IS_ERR(bvme6000_scsi_device)) { 123 platform_driver_unregister(&bvme6000_scsi_driver); 124 return PTR_ERR(bvme6000_scsi_device); 125 } 126 127 return 0; 128 } 129 130 static void __exit bvme6000_scsi_exit(void) 131 { 132 platform_device_unregister(bvme6000_scsi_device); 133 platform_driver_unregister(&bvme6000_scsi_driver); 134 } 135 136 module_init(bvme6000_scsi_init); 137 module_exit(bvme6000_scsi_exit); 138