include/asm-mips/mach-generic/ide.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1994-1996  Linus Torvalds & authors
   7  *
   8  * Copied from i386; many of the especially older MIPS or ISA-based platforms
   9  * are basically identical.  Using this file probably implies i8259 PIC
  10  * support in a system but the very least interrupt numbers 0 - 15 need to
  11  * be put aside for legacy devices.
  12  */
  13 #ifndef __ASM_MACH_GENERIC_IDE_H
  14 #define __ASM_MACH_GENERIC_IDE_H
  15
  16 #ifdef __KERNEL__
  17
  18 #include <linux/config.h>
  19 #include <linux/pci.h>
  20 #include <linux/stddef.h>
  21
  22 #ifndef MAX_HWIFS
  23 # ifdef CONFIG_BLK_DEV_IDEPCI
  24 #define MAX_HWIFS       10
  25 # else
  26 #define MAX_HWIFS       6
  27 # endif
  28 #endif
  29
  30 #define IDE_ARCH_OBSOLETE_DEFAULTS
  31
  32 static __inline__ int ide_probe_legacy(void)
  33 {
  34 #ifdef CONFIG_PCI
  35         struct pci_dev *dev;
  36         if ((dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL)) != NULL ||
  37             (dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL)) != NULL) {
  38                 pci_dev_put(dev);
  39
  40                 return 1;
  41         }
  42         return 0;
  43 #elif defined(CONFIG_EISA) || defined(CONFIG_ISA)
  44         return 1;
  45 #else
  46         return 0;
  47 #endif
  48 }
  49
  50 static __inline__ int ide_default_irq(unsigned long base)
  51 {
  52         if (ide_probe_legacy())
  53                 switch (base) {
  54                 case 0x1f0:
  55                         return 14;
  56                 case 0x170:
  57                         return 15;
  58                 case 0x1e8:
  59                         return 11;
  60                 case 0x168:
  61                         return 10;
  62                 case 0x1e0:
  63                         return 8;
  64                 case 0x160:
  65                         return 12;
  66                 default:
  67                         return 0;
  68                 }
  69         else
  70                 return 0;
  71 }
  72
  73 static __inline__ unsigned long ide_default_io_base(int index)
  74 {
  75         if (ide_probe_legacy())
  76                 switch (index) {
  77                 case 0:
  78                         return 0x1f0;
  79                 case 1:
  80                         return 0x170;
  81                 case 2:
  82                         return 0x1e8;
  83                 case 3:
  84                         return 0x168;
  85                 case 4:
  86                         return 0x1e0;
  87                 case 5:
  88                         return 0x160;
  89                 default:
  90                         return 0;
  91                 }
  92         else
  93                 return 0;
  94 }
  95
  96 #define IDE_ARCH_OBSOLETE_INIT
  97 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  98
  99 #ifdef CONFIG_BLK_DEV_IDEPCI
 100 #define ide_init_default_irq(base)      (0)
 101 #else
 102 #define ide_init_default_irq(base)      ide_default_irq(base)
 103 #endif
 104
 105 /* MIPS port and memory-mapped I/O string operations.  */
 106
 107 #define __ide_insw      insw
 108 #define __ide_insl      insl
 109 #define __ide_outsw     outsw
 110 #define __ide_outsl     outsl
 111
 112 #define __ide_mm_insw   readsw
 113 #define __ide_mm_insl   readsl
 114 #define __ide_mm_outsw  writesw
 115 #define __ide_mm_outsl  writesl
 116
 117 #endif /* __KERNEL__ */
 118
 119 #endif /* __ASM_MACH_GENERIC_IDE_H */