include/asm-x86/ide.h

   1 /*
   2  *  Copyright (C) 1994-1996  Linus Torvalds & authors
   3  */
   4
   5 /*
   6  *  This file contains the i386 architecture specific IDE code.
   7  */
   8
   9 #ifndef __ASMi386_IDE_H
  10 #define __ASMi386_IDE_H
  11
  12 #ifdef __KERNEL__
  13
  14
  15 #ifndef MAX_HWIFS
  16 # ifdef CONFIG_BLK_DEV_IDEPCI
  17 #define MAX_HWIFS       10
  18 # else
  19 #define MAX_HWIFS       6
  20 # endif
  21 #endif
  22
  23 #define IDE_ARCH_OBSOLETE_DEFAULTS
  24
  25 static __inline__ int ide_default_irq(unsigned long base)
  26 {
  27         switch (base) {
  28                 case 0x1f0: return 14;
  29                 case 0x170: return 15;
  30                 case 0x1e8: return 11;
  31                 case 0x168: return 10;
  32                 case 0x1e0: return 8;
  33                 case 0x160: return 12;
  34                 default:
  35                         return 0;
  36         }
  37 }
  38
  39 static __inline__ unsigned long ide_default_io_base(int index)
  40 {
  41         /*
  42          *      If PCI is present then it is not safe to poke around
  43          *      the other legacy IDE ports. Only 0x1f0 and 0x170 are
  44          *      defined compatibility mode ports for PCI. A user can
  45          *      override this using ide= but we must default safe.
  46          */
  47         if (no_pci_devices()) {
  48                 switch(index) {
  49                         case 2: return 0x1e8;
  50                         case 3: return 0x168;
  51                         case 4: return 0x1e0;
  52                         case 5: return 0x160;
  53                 }
  54         }
  55         switch (index) {
  56                 case 0: return 0x1f0;
  57                 case 1: return 0x170;
  58                 default:
  59                         return 0;
  60         }
  61 }
  62
  63 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  64
  65 #ifdef CONFIG_BLK_DEV_IDEPCI
  66 #define ide_init_default_irq(base)      (0)
  67 #else
  68 #define ide_init_default_irq(base)      ide_default_irq(base)
  69 #endif
  70
  71 #include <asm-generic/ide_iops.h>
  72
  73 #endif /* __KERNEL__ */
  74
  75 #endif /* __ASMi386_IDE_H */