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
  26 #define IDE_ARCH_OBSOLETE_DEFAULTS
  27
  28 static __inline__ int ide_default_irq(unsigned long base)
  29 {
  30         switch (base) {
  31                 case 0x1f0: return 14;
  32                 case 0x170: return 15;
  33                 case 0x1e8: return 11;
  34                 case 0x168: return 10;
  35                 case 0x1e0: return 8;
  36                 case 0x160: return 12;
  37                 default:
  38                         return 0;
  39         }
  40 }
  41
  42 static __inline__ unsigned long ide_default_io_base(int index)
  43 {
  44         /*
  45          *      If PCI is present then it is not safe to poke around
  46          *      the other legacy IDE ports. Only 0x1f0 and 0x170 are
  47          *      defined compatibility mode ports for PCI. A user can
  48          *      override this using ide= but we must default safe.
  49          */
  50         if (pci_find_device(PCI_ANY_ID, PCI_ANY_ID, NULL) == NULL) {
  51                 switch(index) {
  52                         case 2: return 0x1e8;
  53                         case 3: return 0x168;
  54                         case 4: return 0x1e0;
  55                         case 5: return 0x160;
  56                 }
  57         }
  58         switch (index) {
  59                 case 0: return 0x1f0;
  60                 case 1: return 0x170;
  61                 default:
  62                         return 0;
  63         }
  64 }
  65
  66 #define IDE_ARCH_OBSOLETE_INIT
  67 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  68
  69 #ifdef CONFIG_BLK_DEV_IDEPCI
  70 #define ide_init_default_irq(base)      (0)
  71 #else
  72 #define ide_init_default_irq(base)      ide_default_irq(base)
  73 #endif
  74
  75 #include <asm-generic/ide_iops.h>
  76
  77 #endif /* __KERNEL__ */
  78
  79 #endif /* __ASMi386_IDE_H */