drivers/ide/rapide.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 1996-2002 Russell King.
   4  */
   5
   6 #include <linux/module.h>
   7 #include <linux/blkdev.h>
   8 #include <linux/errno.h>
   9 #include <linux/ide.h>
  10 #include <linux/init.h>
  11
  12 #include <asm/ecard.h>
  13
  14 static const struct ide_port_info rapide_port_info = {
  15         .host_flags             = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
  16         .chipset                = ide_generic,
  17 };
  18
  19 static void rapide_setup_ports(struct ide_hw *hw, void __iomem *base,
  20                                void __iomem *ctrl, unsigned int sz, int irq)
  21 {
  22         unsigned long port = (unsigned long)base;
  23         int i;
  24
  25         for (i = 0; i <= 7; i++) {
  26                 hw->io_ports_array[i] = port;
  27                 port += sz;
  28         }
  29         hw->io_ports.ctl_addr = (unsigned long)ctrl;
  30         hw->irq = irq;
  31 }
  32
  33 static int rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
  34 {
  35         void __iomem *base;
  36         struct ide_host *host;
  37         int ret;
  38         struct ide_hw hw, *hws[] = { &hw };
  39
  40         ret = ecard_request_resources(ec);
  41         if (ret)
  42                 goto out;
  43
  44         base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
  45         if (!base) {
  46                 ret = -ENOMEM;
  47                 goto release;
  48         }
  49
  50         memset(&hw, 0, sizeof(hw));
  51         rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
  52         hw.dev = &ec->dev;
  53
  54         ret = ide_host_add(&rapide_port_info, hws, 1, &host);
  55         if (ret)
  56                 goto release;
  57
  58         ecard_set_drvdata(ec, host);
  59         goto out;
  60
  61  release:
  62         ecard_release_resources(ec);
  63  out:
  64         return ret;
  65 }
  66
  67 static void rapide_remove(struct expansion_card *ec)
  68 {
  69         struct ide_host *host = ecard_get_drvdata(ec);
  70
  71         ecard_set_drvdata(ec, NULL);
  72
  73         ide_host_remove(host);
  74
  75         ecard_release_resources(ec);
  76 }
  77
  78 static struct ecard_id rapide_ids[] = {
  79         { MANU_YELLOWSTONE, PROD_YELLOWSTONE_RAPIDE32 },
  80         { 0xffff, 0xffff }
  81 };
  82
  83 static struct ecard_driver rapide_driver = {
  84         .probe          = rapide_probe,
  85         .remove         = rapide_remove,
  86         .id_table       = rapide_ids,
  87         .drv = {
  88                 .name   = "rapide",
  89         },
  90 };
  91
  92 static int __init rapide_init(void)
  93 {
  94         return ecard_register_driver(&rapide_driver);
  95 }
  96
  97 static void __exit rapide_exit(void)
  98 {
  99         ecard_remove_driver(&rapide_driver);
 100 }
 101
 102 MODULE_LICENSE("GPL");
 103 MODULE_DESCRIPTION("Yellowstone RAPIDE driver");
 104
 105 module_init(rapide_init);
 106 module_exit(rapide_exit);