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 device *dev) 38 { 39 struct Scsi_Host * host = NULL; 40 struct NCR_700_Host_Parameters *hostdata; 41 42 if (!MACH_IS_BVME6000) 43 goto out; 44 45 hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); 46 if (hostdata == NULL) { 47 printk(KERN_ERR "bvme6000-scsi: " 48 "Failed to allocate host data\n"); 49 goto out; 50 } 51 memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters)); 52 53 /* Fill in the required pieces of hostdata */ 54 hostdata->base = (void __iomem *)BVME_NCR53C710_BASE; 55 hostdata->clock = 40; /* XXX - depends on the CPU clock! */ 56 hostdata->chip710 = 1; 57 hostdata->dmode_extra = DMODE_FC2; 58 hostdata->dcntl_extra = EA_710; 59 hostdata->ctest7_extra = CTEST7_TT1; 60 61 /* and register the chip */ 62 host = NCR_700_detect(&bvme6000_scsi_driver_template, hostdata, dev); 63 if (!host) { 64 printk(KERN_ERR "bvme6000-scsi: No host detected; " 65 "board configuration problem?\n"); 66 goto out_free; 67 } 68 host->base = BVME_NCR53C710_BASE; 69 host->this_id = 7; 70 host->irq = BVME_IRQ_SCSI; 71 if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi", 72 host)) { 73 printk(KERN_ERR "bvme6000-scsi: request_irq failed\n"); 74 goto out_put_host; 75 } 76 77 dev_set_drvdata(dev, host); 78 scsi_scan_host(host); 79 80 return 0; 81 82 out_put_host: 83 scsi_host_put(host); 84 out_free: 85 kfree(hostdata); 86 out: 87 return -ENODEV; 88 } 89 90 static __devexit int 91 bvme6000_device_remove(struct device *dev) 92 { 93 struct Scsi_Host *host = dev_get_drvdata(dev); 94 struct NCR_700_Host_Parameters *hostdata = shost_priv(host); 95 96 scsi_remove_host(host); 97 NCR_700_release(host); 98 kfree(hostdata); 99 free_irq(host->irq, host); 100 101 return 0; 102 } 103 104 static struct device_driver bvme6000_scsi_driver = { 105 .name = "bvme6000-scsi", 106 .bus = &platform_bus_type, 107 .probe = bvme6000_probe, 108 .remove = __devexit_p(bvme6000_device_remove), 109 }; 110 111 static int __init bvme6000_scsi_init(void) 112 { 113 int err; 114 115 err = driver_register(&bvme6000_scsi_driver); 116 if (err) 117 return err; 118 119 bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi", 120 -1, NULL, 0); 121 if (IS_ERR(bvme6000_scsi_device)) { 122 driver_unregister(&bvme6000_scsi_driver); 123 return PTR_ERR(bvme6000_scsi_device); 124 } 125 126 return 0; 127 } 128 129 static void __exit bvme6000_scsi_exit(void) 130 { 131 platform_device_unregister(bvme6000_scsi_device); 132 driver_unregister(&bvme6000_scsi_driver); 133 } 134 135 module_init(bvme6000_scsi_init); 136 module_exit(bvme6000_scsi_exit); 137