LXR linux-old/include/asm-i386/ide.h

   1/*
   2 *  linux/include/asm-i386/ide.h
   3 *
   4 *  Copyright (C) 1994-1996  Linus Torvalds & authors
   5 */
   6
   7/*
   8 *  This file contains the i386 architecture specific IDE code.
   9 */
  10
  11#ifndef __ASMi386_IDE_H
  12#define __ASMi386_IDE_H
  13
  14#ifdef __KERNEL__
  15
  16#include <linux/config.h>
  17
  18#ifndef MAX_HWIFS
  19# ifdef CONFIG_BLK_DEV_IDEPCI
  20#define MAX_HWIFS       10
  21# else
  22#define MAX_HWIFS       6
  23# endif
  24#endif
  25
  26static __inline__ int ide_default_irq(ide_ioreg_t base)
  27{
  28        switch (base) {
  29                case 0x1f0: return 14;
  30                case 0x170: return 15;
  31                case 0x1e8: return 11;
  32                case 0x168: return 10;
  33                case 0x1e0: return 8;
  34                case 0x160: return 12;
  35                default:
  36                        return 0;
  37        }
  38}
  39
  40static __inline__ ide_ioreg_t ide_default_io_base(int index)
  41{
  42        switch (index) {
  43                case 0: return 0x1f0;
  44                case 1: return 0x170;
  45                case 2: return 0x1e8;
  46                case 3: return 0x168;
  47                case 4: return 0x1e0;
  48                case 5: return 0x160;
  49                default:
  50                        return 0;
  51        }
  52}
  53
  54static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
  55{
  56        ide_ioreg_t reg = data_port;
  57        int i;
  58
  59        for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
  60                hw->io_ports[i] = reg;
  61                reg += 1;
  62        }
  63        if (ctrl_port) {
  64                hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
  65        } else {
  66                hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
  67        }
  68        if (irq != NULL)
  69                *irq = 0;
  70        hw->io_ports[IDE_IRQ_OFFSET] = 0;
  71}
  72
  73static __inline__ void ide_init_default_hwifs(void)
  74{
  75#ifndef CONFIG_BLK_DEV_IDEPCI
  76        hw_regs_t hw;
  77        int index;
  78
  79        for(index = 0; index < MAX_HWIFS; index++) {
  80                memset(&hw, 0, sizeof hw);
  81                ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
  82                hw.irq = ide_default_irq(ide_default_io_base(index));
  83                ide_register_hw(&hw, NULL);
  84        }
  85#endif /* CONFIG_BLK_DEV_IDEPCI */
  86}
  87
  88#include <asm-generic/ide_iops.h>
  89
  90#endif /* __KERNEL__ */
  91
  92#endif /* __ASMi386_IDE_H */
  93