| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux. |
| 3 | * Amiga MacroSystemUS WarpEngine SCSI controller. |
| 4 | * Amiga Technologies A4000T SCSI controller. |
| 5 | * Amiga Technologies/DKB A4091 SCSI controller. |
| 6 | * |
| 7 | * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk> |
| 8 | * plus modifications of the 53c7xx.c driver to support the Amiga. |
| 9 | */ |
| 10 | #include <linux/types.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/blkdev.h> |
| 13 | #include <linux/sched.h> |
| 14 | #include <linux/version.h> |
| 15 | #include <linux/config.h> |
| 16 | #include <linux/zorro.h> |
| 17 | #include <linux/stat.h> |
| 18 | |
| 19 | #include <asm/setup.h> |
| 20 | #include <asm/page.h> |
| 21 | #include <asm/pgtable.h> |
| 22 | #include <asm/amigaints.h> |
| 23 | #include <asm/amigahw.h> |
| 24 | #include <asm/dma.h> |
| 25 | #include <asm/irq.h> |
| 26 | |
| 27 | #include "scsi.h" |
| 28 | #include <scsi/scsi_host.h> |
| 29 | #include "53c7xx.h" |
| 30 | #include "amiga7xx.h" |
| 31 | |
| 32 | |
| 33 | static int amiga7xx_register_one(Scsi_Host_Template *tpnt, |
| 34 | unsigned long address) |
| 35 | { |
| 36 | long long options; |
| 37 | int clock; |
| 38 | |
| 39 | if (!request_mem_region(address, 0x1000, "ncr53c710")) |
| 40 | return 0; |
| 41 | |
| 42 | address = (unsigned long)z_ioremap(address, 0x1000); |
| 43 | options = OPTION_MEMORY_MAPPED | OPTION_DEBUG_TEST1 | OPTION_INTFLY | |
| 44 | OPTION_SYNCHRONOUS | OPTION_ALWAYS_SYNCHRONOUS | |
| 45 | OPTION_DISCONNECT; |
| 46 | clock = 50000000; /* 50 MHz SCSI Clock */ |
| 47 | ncr53c7xx_init(tpnt, 0, 710, address, 0, IRQ_AMIGA_PORTS, DMA_NONE, |
| 48 | options, clock); |
| 49 | return 1; |
| 50 | } |
| 51 | |
| 52 | |
| 53 | #ifdef CONFIG_ZORRO |
| 54 | |
| 55 | static struct { |
| 56 | zorro_id id; |
| 57 | unsigned long offset; |
| 58 | int absolute; /* offset is absolute address */ |
| 59 | } amiga7xx_table[] = { |
| 60 | { .id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS, .offset = 0xf40000, |
| 61 | .absolute = 1 }, |
| 62 | { .id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx, .offset = 0x40000 }, |
| 63 | { .id = ZORRO_PROD_CBM_A4091_1, .offset = 0x800000 }, |
| 64 | { .id = ZORRO_PROD_CBM_A4091_2, .offset = 0x800000 }, |
| 65 | { .id = ZORRO_PROD_GVP_GFORCE_040_060, .offset = 0x40000 }, |
| 66 | { 0 } |
| 67 | }; |
| 68 | |
| 69 | static int __init amiga7xx_zorro_detect(Scsi_Host_Template *tpnt) |
| 70 | { |
| 71 | int num = 0, i; |
| 72 | struct zorro_dev *z = NULL; |
| 73 | unsigned long address; |
| 74 | |
| 75 | while ((z = zorro_find_device(ZORRO_WILDCARD, z))) { |
| 76 | for (i = 0; amiga7xx_table[i].id; i++) |
| 77 | if (z->id == amiga7xx_table[i].id) |
| 78 | break; |
| 79 | if (!amiga7xx_table[i].id) |
| 80 | continue; |
| 81 | if (amiga7xx_table[i].absolute) |
| 82 | address = amiga7xx_table[i].offset; |
| 83 | else |
| 84 | address = z->resource.start + amiga7xx_table[i].offset; |
| 85 | num += amiga7xx_register_one(tpnt, address); |
| 86 | } |
| 87 | return num; |
| 88 | } |
| 89 | |
| 90 | #endif /* CONFIG_ZORRO */ |
| 91 | |
| 92 | |
| 93 | int __init amiga7xx_detect(Scsi_Host_Template *tpnt) |
| 94 | { |
| 95 | static unsigned char called = 0; |
| 96 | int num = 0; |
| 97 | |
| 98 | if (called || !MACH_IS_AMIGA) |
| 99 | return 0; |
| 100 | |
| 101 | tpnt->proc_name = "Amiga7xx"; |
| 102 | |
| 103 | if (AMIGAHW_PRESENT(A4000_SCSI)) |
| 104 | num += amiga7xx_register_one(tpnt, 0xdd0040); |
| 105 | |
| 106 | #ifdef CONFIG_ZORRO |
| 107 | num += amiga7xx_zorro_detect(tpnt); |
| 108 | #endif |
| 109 | |
| 110 | called = 1; |
| 111 | return num; |
| 112 | } |
| 113 | |
| 114 | static int amiga7xx_release(struct Scsi_Host *shost) |
| 115 | { |
| 116 | if (shost->irq) |
| 117 | free_irq(shost->irq, NULL); |
| 118 | if (shost->dma_channel != 0xff) |
| 119 | free_dma(shost->dma_channel); |
| 120 | if (shost->io_port && shost->n_io_port) |
| 121 | release_region(shost->io_port, shost->n_io_port); |
| 122 | scsi_unregister(shost); |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | static Scsi_Host_Template driver_template = { |
| 127 | .name = "Amiga NCR53c710 SCSI", |
| 128 | .detect = amiga7xx_detect, |
| 129 | .release = amiga7xx_release, |
| 130 | .queuecommand = NCR53c7xx_queue_command, |
| 131 | .abort = NCR53c7xx_abort, |
| 132 | .reset = NCR53c7xx_reset, |
| 133 | .can_queue = 24, |
| 134 | .this_id = 7, |
| 135 | .sg_tablesize = 63, |
| 136 | .cmd_per_lun = 3, |
| 137 | .use_clustering = DISABLE_CLUSTERING |
| 138 | }; |
| 139 | |
| 140 | |
| 141 | #include "scsi_module.c" |