drivers/ide/arm/rapide.c

   1 /*
   2  * linux/drivers/ide/arm/rapide.c
   3  *
   4  * Copyright (c) 1996-2002 Russell King.
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/slab.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/errno.h>
  11 #include <linux/ide.h>
  12 #include <linux/init.h>
  13
  14 #include <asm/ecard.h>
  15
  16 static ide_hwif_t *
  17 rapide_locate_hwif(void __iomem *base, void __iomem *ctrl, unsigned int sz, int irq)
  18 {
  19         unsigned long port = (unsigned long)base;
  20         ide_hwif_t *hwif = ide_find_port(port);
  21         int i;
  22
  23         if (hwif == NULL)
  24                 goto out;
  25
  26         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
  27                 hwif->io_ports[i] = port;
  28                 port += sz;
  29         }
  30         hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
  31         hwif->irq = irq;
  32         hwif->mmio = 1;
  33         default_hwif_mmiops(hwif);
  34 out:
  35         return hwif;
  36 }
  37
  38 static int __devinit
  39 rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
  40 {
  41         ide_hwif_t *hwif;
  42         void __iomem *base;
  43         int ret;
  44         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
  45
  46         ret = ecard_request_resources(ec);
  47         if (ret)
  48                 goto out;
  49
  50         base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
  51         if (!base) {
  52                 ret = -ENOMEM;
  53                 goto release;
  54         }
  55
  56         hwif = rapide_locate_hwif(base, base + 0x818, 1 << 6, ec->irq);
  57         if (hwif) {
  58                 hwif->hwif_data = base;
  59                 hwif->gendev.parent = &ec->dev;
  60                 hwif->noprobe = 0;
  61
  62                 idx[0] = hwif->index;
  63
  64                 ide_device_add(idx);
  65
  66                 ecard_set_drvdata(ec, hwif);
  67                 goto out;
  68         }
  69
  70  release:
  71         ecard_release_resources(ec);
  72  out:
  73         return ret;
  74 }
  75
  76 static void __devexit rapide_remove(struct expansion_card *ec)
  77 {
  78         ide_hwif_t *hwif = ecard_get_drvdata(ec);
  79
  80         ecard_set_drvdata(ec, NULL);
  81
  82         /* there must be a better way */
  83         ide_unregister(hwif - ide_hwifs);
  84         ecard_release_resources(ec);
  85 }
  86
  87 static struct ecard_id rapide_ids[] = {
  88         { MANU_YELLOWSTONE, PROD_YELLOWSTONE_RAPIDE32 },
  89         { 0xffff, 0xffff }
  90 };
  91
  92 static struct ecard_driver rapide_driver = {
  93         .probe          = rapide_probe,
  94         .remove         = __devexit_p(rapide_remove),
  95         .id_table       = rapide_ids,
  96         .drv = {
  97                 .name   = "rapide",
  98         },
  99 };
 100
 101 static int __init rapide_init(void)
 102 {
 103         return ecard_register_driver(&rapide_driver);
 104 }
 105
 106 MODULE_LICENSE("GPL");
 107 MODULE_DESCRIPTION("Yellowstone RAPIDE driver");
 108
 109 module_init(rapide_init);