| 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> |
| 15 | #include <linux/slab.h> |
| 16 | #include <asm/amigahw.h> |
| 17 | #include <asm/amigaints.h> |
| 18 | #include <scsi/scsi_host.h> |
| 19 | #include <scsi/scsi_transport_spi.h> |
| 20 | |
| 21 | #include "53c700.h" |
| 22 | |
| 23 | |
| 24 | static struct scsi_host_template a4000t_scsi_driver_template = { |
| 25 | .name = "A4000T builtin SCSI", |
| 26 | .proc_name = "A4000t", |
| 27 | .this_id = 7, |
| 28 | .module = THIS_MODULE, |
| 29 | }; |
| 30 | |
| 31 | |
| 32 | #define A4000T_SCSI_OFFSET 0x40 |
| 33 | |
| 34 | static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev) |
| 35 | { |
| 36 | struct resource *res; |
| 37 | phys_addr_t scsi_addr; |
| 38 | struct NCR_700_Host_Parameters *hostdata; |
| 39 | struct Scsi_Host *host; |
| 40 | |
| 41 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 42 | if (!res) |
| 43 | return -ENODEV; |
| 44 | |
| 45 | if (!request_mem_region(res->start, resource_size(res), |
| 46 | "A4000T builtin SCSI")) |
| 47 | return -EBUSY; |
| 48 | |
| 49 | hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), |
| 50 | GFP_KERNEL); |
| 51 | if (!hostdata) { |
| 52 | dev_err(&pdev->dev, "Failed to allocate host data\n"); |
| 53 | goto out_release; |
| 54 | } |
| 55 | |
| 56 | scsi_addr = res->start + A4000T_SCSI_OFFSET; |
| 57 | |
| 58 | /* Fill in the required pieces of hostdata */ |
| 59 | hostdata->base = ZTWO_VADDR(scsi_addr); |
| 60 | hostdata->clock = 50; |
| 61 | hostdata->chip710 = 1; |
| 62 | hostdata->dmode_extra = DMODE_FC2; |
| 63 | hostdata->dcntl_extra = EA_710; |
| 64 | |
| 65 | /* and register the chip */ |
| 66 | host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, |
| 67 | &pdev->dev); |
| 68 | if (!host) { |
| 69 | dev_err(&pdev->dev, |
| 70 | "No host detected; board configuration problem?\n"); |
| 71 | goto out_free; |
| 72 | } |
| 73 | |
| 74 | host->this_id = 7; |
| 75 | host->base = scsi_addr; |
| 76 | host->irq = IRQ_AMIGA_PORTS; |
| 77 | |
| 78 | if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi", |
| 79 | host)) { |
| 80 | dev_err(&pdev->dev, "request_irq failed\n"); |
| 81 | goto out_put_host; |
| 82 | } |
| 83 | |
| 84 | platform_set_drvdata(pdev, host); |
| 85 | scsi_scan_host(host); |
| 86 | return 0; |
| 87 | |
| 88 | out_put_host: |
| 89 | scsi_host_put(host); |
| 90 | out_free: |
| 91 | kfree(hostdata); |
| 92 | out_release: |
| 93 | release_mem_region(res->start, resource_size(res)); |
| 94 | return -ENODEV; |
| 95 | } |
| 96 | |
| 97 | static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev) |
| 98 | { |
| 99 | struct Scsi_Host *host = platform_get_drvdata(pdev); |
| 100 | struct NCR_700_Host_Parameters *hostdata = shost_priv(host); |
| 101 | struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 102 | |
| 103 | scsi_remove_host(host); |
| 104 | NCR_700_release(host); |
| 105 | kfree(hostdata); |
| 106 | free_irq(host->irq, host); |
| 107 | release_mem_region(res->start, resource_size(res)); |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static struct platform_driver amiga_a4000t_scsi_driver = { |
| 112 | .remove = __exit_p(amiga_a4000t_scsi_remove), |
| 113 | .driver = { |
| 114 | .name = "amiga-a4000t-scsi", |
| 115 | }, |
| 116 | }; |
| 117 | |
| 118 | module_platform_driver_probe(amiga_a4000t_scsi_driver, amiga_a4000t_scsi_probe); |
| 119 | |
| 120 | MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / " |
| 121 | "Kars de Jong <jongk@linux-m68k.org>"); |
| 122 | MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver"); |
| 123 | MODULE_LICENSE("GPL"); |
| 124 | MODULE_ALIAS("platform:amiga-a4000t-scsi"); |