projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| a16efc1c KJ |
1 | /* |
| 2 | * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux. | |
| 3 | * Amiga Technologies A4000T SCSI controller. | |
| 4 | * | |
| 5 | * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk> | |
| 6 | * plus modifications of the 53c7xx.c driver to support the Amiga. | |
| 7 | * | |
| 8 | * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org> | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/module.h> | |
| 12 | #include <linux/platform_device.h> | |
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/interrupt.h> | |
| 96249cf9 | 15 | #include <asm/amigahw.h> |
| a16efc1c KJ |
16 | #include <asm/amigaints.h> |
| 17 | #include <scsi/scsi_host.h> | |
| 18 | #include <scsi/scsi_transport_spi.h> | |
| 19 | ||
| 20 | #include "53c700.h" | |
| 21 | ||
| 22 | MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>"); | |
| 23 | MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver"); | |
| 24 | MODULE_LICENSE("GPL"); | |
| 25 | ||
| 26 | ||
| 27 | static struct scsi_host_template a4000t_scsi_driver_template = { | |
| 28 | .name = "A4000T builtin SCSI", | |
| 29 | .proc_name = "A4000t", | |
| 30 | .this_id = 7, | |
| 31 | .module = THIS_MODULE, | |
| 32 | }; | |
| 33 | ||
| 34 | static struct platform_device *a4000t_scsi_device; | |
| 35 | ||
| 36 | #define A4000T_SCSI_ADDR 0xdd0040 | |
| 37 | ||
| 38 | static int __devinit a4000t_probe(struct device *dev) | |
| 39 | { | |
| 40 | struct Scsi_Host * host = NULL; | |
| 41 | struct NCR_700_Host_Parameters *hostdata; | |
| 42 | ||
| 43 | if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI))) | |
| 44 | goto out; | |
| 45 | ||
| 46 | if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000, | |
| 47 | "A4000T builtin SCSI")) | |
| 48 | goto out; | |
| 49 | ||
| 50 | hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); | |
| 51 | if (hostdata == NULL) { | |
| 52 | printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n"); | |
| 53 | goto out_release; | |
| 54 | } | |
| 55 | memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters)); | |
| 56 | ||
| 57 | /* Fill in the required pieces of hostdata */ | |
| 58 | hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR); | |
| 59 | hostdata->clock = 50; | |
| 60 | hostdata->chip710 = 1; | |
| 61 | hostdata->dmode_extra = DMODE_FC2; | |
| 62 | hostdata->dcntl_extra = EA_710; | |
| 63 | ||
| 64 | /* and register the chip */ | |
| 65 | host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev); | |
| 66 | if (!host) { | |
| 67 | printk(KERN_ERR "a4000t-scsi: No host detected; " | |
| 68 | "board configuration problem?\n"); | |
| 69 | goto out_free; | |
| 70 | } | |
| 71 | ||
| 72 | host->this_id = 7; | |
| 73 | host->base = A4000T_SCSI_ADDR; | |
| 74 | host->irq = IRQ_AMIGA_PORTS; | |
| 75 | ||
| 76 | if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi", | |
| 77 | host)) { | |
| 78 | printk(KERN_ERR "a4000t-scsi: request_irq failed\n"); | |
| 79 | goto out_put_host; | |
| 80 | } | |
| 81 | ||
| 3ac709c1 | 82 | dev_set_drvdata(dev, host); |
| a16efc1c KJ |
83 | scsi_scan_host(host); |
| 84 | ||
| 85 | return 0; | |
| 86 | ||
| 87 | out_put_host: | |
| 88 | scsi_host_put(host); | |
| 89 | out_free: | |
| 90 | kfree(hostdata); | |
| 91 | out_release: | |
| 92 | release_mem_region(A4000T_SCSI_ADDR, 0x1000); | |
| 93 | out: | |
| 94 | return -ENODEV; | |
| 95 | } | |
| 96 | ||
| 97 | static __devexit int a4000t_device_remove(struct device *dev) | |
| 98 | { | |
| 3ac709c1 | 99 | struct Scsi_Host *host = dev_get_drvdata(dev); |
| a16efc1c KJ |
100 | struct NCR_700_Host_Parameters *hostdata = shost_priv(host); |
| 101 | ||
| 102 | scsi_remove_host(host); | |
| 103 | ||
| 104 | NCR_700_release(host); | |
| 105 | kfree(hostdata); | |
| 106 | free_irq(host->irq, host); | |
| 107 | release_mem_region(A4000T_SCSI_ADDR, 0x1000); | |
| 108 | ||
| 109 | return 0; | |
| 110 | } | |
| 111 | ||
| 112 | static struct device_driver a4000t_scsi_driver = { | |
| 113 | .name = "a4000t-scsi", | |
| 114 | .bus = &platform_bus_type, | |
| 115 | .probe = a4000t_probe, | |
| 116 | .remove = __devexit_p(a4000t_device_remove), | |
| 117 | }; | |
| 118 | ||
| 119 | static int __init a4000t_scsi_init(void) | |
| 120 | { | |
| 121 | int err; | |
| 122 | ||
| 123 | err = driver_register(&a4000t_scsi_driver); | |
| 124 | if (err) | |
| 125 | return err; | |
| 126 | ||
| 127 | a4000t_scsi_device = platform_device_register_simple("a4000t-scsi", | |
| 128 | -1, NULL, 0); | |
| 129 | if (IS_ERR(a4000t_scsi_device)) { | |
| 130 | driver_unregister(&a4000t_scsi_driver); | |
| 131 | return PTR_ERR(a4000t_scsi_device); | |
| 132 | } | |
| 133 | ||
| 134 | return err; | |
| 135 | } | |
| 136 | ||
| 137 | static void __exit a4000t_scsi_exit(void) | |
| 138 | { | |
| 139 | platform_device_unregister(a4000t_scsi_device); | |
| 140 | driver_unregister(&a4000t_scsi_driver); | |
| 141 | } | |
| 142 | ||
| 143 | module_init(a4000t_scsi_init); | |
| 144 | module_exit(a4000t_scsi_exit); |