drivers/ide/legacy/falconide.c

   1 /*
   2  *  linux/drivers/ide/legacy/falconide.c -- Atari Falcon IDE Driver
   3  *
   4  *     Created 12 Jul 1997 by Geert Uytterhoeven
   5  *
   6  *  This file is subject to the terms and conditions of the GNU General Public
   7  *  License.  See the file COPYING in the main directory of this archive for
   8  *  more details.
   9  */
  10
  11 #include <linux/types.h>
  12 #include <linux/mm.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/blkdev.h>
  15 #include <linux/hdreg.h>
  16 #include <linux/ide.h>
  17 #include <linux/init.h>
  18
  19 #include <asm/setup.h>
  20 #include <asm/atarihw.h>
  21 #include <asm/atariints.h>
  22 #include <asm/atari_stdma.h>
  23
  24
  25     /*
  26      *  Base of the IDE interface
  27      */
  28
  29 #define ATA_HD_BASE     0xfff00000
  30
  31     /*
  32      *  Offsets from the above base
  33      */
  34
  35 #define ATA_HD_DATA     0x00
  36 #define ATA_HD_ERROR    0x05            /* see err-bits */
  37 #define ATA_HD_NSECTOR  0x09            /* nr of sectors to read/write */
  38 #define ATA_HD_SECTOR   0x0d            /* starting sector */
  39 #define ATA_HD_LCYL     0x11            /* starting cylinder */
  40 #define ATA_HD_HCYL     0x15            /* high byte of starting cyl */
  41 #define ATA_HD_SELECT   0x19            /* 101dhhhh , d=drive, hhhh=head */
  42 #define ATA_HD_STATUS   0x1d            /* see status-bits */
  43 #define ATA_HD_CONTROL  0x39
  44
  45 static int falconide_offsets[IDE_NR_PORTS] __initdata = {
  46     ATA_HD_DATA, ATA_HD_ERROR, ATA_HD_NSECTOR, ATA_HD_SECTOR, ATA_HD_LCYL,
  47     ATA_HD_HCYL, ATA_HD_SELECT, ATA_HD_STATUS, ATA_HD_CONTROL, -1
  48 };
  49
  50
  51     /*
  52      *  falconide_intr_lock is used to obtain access to the IDE interrupt,
  53      *  which is shared between several drivers.
  54      */
  55
  56 int falconide_intr_lock;
  57
  58
  59     /*
  60      *  Probe for a Falcon IDE interface
  61      */
  62
  63 void __init falconide_init(void)
  64 {
  65     if (MACH_IS_ATARI && ATARIHW_PRESENT(IDE)) {
  66         hw_regs_t hw;
  67         int index;
  68
  69         ide_setup_ports(&hw, ATA_HD_BASE, falconide_offsets,
  70                         0, 0, NULL,
  71 //                      falconide_iops,
  72                         IRQ_MFP_IDE);
  73         index = ide_register_hw(&hw, NULL);
  74
  75         if (index != -1)
  76             printk("ide%d: Falcon IDE interface\n", index);
  77     }
  78 }