include/asm-x86/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
  17 #ifndef MAX_HWIFS
  18 # ifdef CONFIG_BLK_DEV_IDEPCI
  19 #define MAX_HWIFS       10
  20 # else
  21 #define MAX_HWIFS       6
  22 # endif
  23 #endif
  24
  25 #define IDE_ARCH_OBSOLETE_DEFAULTS
  26
  27 static __inline__ int ide_default_irq(unsigned long base)
  28 {
  29         switch (base) {
  30                 case 0x1f0: return 14;
  31                 case 0x170: return 15;
  32                 case 0x1e8: return 11;
  33                 case 0x168: return 10;
  34                 case 0x1e0: return 8;
  35                 case 0x160: return 12;
  36                 default:
  37                         return 0;
  38         }
  39 }
  40
  41 static __inline__ unsigned long ide_default_io_base(int index)
  42 {
  43         /*
  44          *      If PCI is present then it is not safe to poke around
  45          *      the other legacy IDE ports. Only 0x1f0 and 0x170 are
  46          *      defined compatibility mode ports for PCI. A user can
  47          *      override this using ide= but we must default safe.
  48          */
  49         if (no_pci_devices()) {
  50                 switch(index) {
  51                         case 2: return 0x1e8;
  52                         case 3: return 0x168;
  53                         case 4: return 0x1e0;
  54                         case 5: return 0x160;
  55                 }
  56         }
  57         switch (index) {
  58                 case 0: return 0x1f0;
  59                 case 1: return 0x170;
  60                 default:
  61                         return 0;
  62         }
  63 }
  64
  65 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  66
  67 #ifdef CONFIG_BLK_DEV_IDEPCI
  68 #define ide_init_default_irq(base)      (0)
  69 #else
  70 #define ide_init_default_irq(base)      ide_default_irq(base)
  71 #endif
  72
  73 #include <asm-generic/ide_iops.h>
  74
  75 #endif /* __KERNEL__ */
  76
  77 #endif /* __ASMi386_IDE_H */