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  1. /*
  2.  * ioport.h     Definitions of routines for detecting, reserving and
  3.  *              allocating system resources.
  4.  *
  5.  * Authors:     Linus Torvalds
  6.  */
  7.  
  8. #ifndef _LINUX_IOPORT_H
  9. #define _LINUX_IOPORT_H
  10.  
  11. #ifndef __ASSEMBLY__
  12. #include <linux/compiler.h>
  13. #include <linux/types.h>
  14. /*
  15.  * Resources are tree-like, allowing
  16.  * nesting etc..
  17.  */
  18. struct resource {
  19.         resource_size_t start;
  20.         resource_size_t end;
  21.         const char *name;
  22.         unsigned long flags;
  23.         struct resource *parent, *sibling, *child;
  24. };
  25.  
  26. struct resource_list {
  27.         struct resource_list *next;
  28.         struct resource *res;
  29.         struct pci_dev *dev;
  30. };
  31.  
  32. /*
  33.  * IO resources have these defined flags.
  34.  */
  35. #define IORESOURCE_BITS         0x000000ff      /* Bus-specific bits */
  36.  
  37. #define IORESOURCE_TYPE_BITS    0x00001f00      /* Resource type */
  38. #define IORESOURCE_IO           0x00000100
  39. #define IORESOURCE_MEM          0x00000200
  40. #define IORESOURCE_IRQ          0x00000400
  41. #define IORESOURCE_DMA          0x00000800
  42. #define IORESOURCE_BUS          0x00001000
  43.  
  44. #define IORESOURCE_PREFETCH     0x00002000      /* No side effects */
  45. #define IORESOURCE_READONLY     0x00004000
  46. #define IORESOURCE_CACHEABLE    0x00008000
  47. #define IORESOURCE_RANGELENGTH  0x00010000
  48. #define IORESOURCE_SHADOWABLE   0x00020000
  49.  
  50. #define IORESOURCE_SIZEALIGN    0x00040000      /* size indicates alignment */
  51. #define IORESOURCE_STARTALIGN   0x00080000      /* start field is alignment */
  52.  
  53. #define IORESOURCE_MEM_64       0x00100000
  54. #define IORESOURCE_WINDOW       0x00200000      /* forwarded by bridge */
  55. #define IORESOURCE_MUXED        0x00400000      /* Resource is software muxed */
  56.  
  57. #define IORESOURCE_EXCLUSIVE    0x08000000      /* Userland may not map this resource */
  58. #define IORESOURCE_DISABLED     0x10000000
  59. #define IORESOURCE_UNSET        0x20000000
  60. #define IORESOURCE_AUTO         0x40000000
  61. #define IORESOURCE_BUSY         0x80000000      /* Driver has marked this resource busy */
  62.  
  63. /* PnP IRQ specific bits (IORESOURCE_BITS) */
  64. #define IORESOURCE_IRQ_HIGHEDGE         (1<<0)
  65. #define IORESOURCE_IRQ_LOWEDGE          (1<<1)
  66. #define IORESOURCE_IRQ_HIGHLEVEL        (1<<2)
  67. #define IORESOURCE_IRQ_LOWLEVEL         (1<<3)
  68. #define IORESOURCE_IRQ_SHAREABLE        (1<<4)
  69. #define IORESOURCE_IRQ_OPTIONAL         (1<<5)
  70.  
  71. /* PnP DMA specific bits (IORESOURCE_BITS) */
  72. #define IORESOURCE_DMA_TYPE_MASK        (3<<0)
  73. #define IORESOURCE_DMA_8BIT             (0<<0)
  74. #define IORESOURCE_DMA_8AND16BIT        (1<<0)
  75. #define IORESOURCE_DMA_16BIT            (2<<0)
  76.  
  77. #define IORESOURCE_DMA_MASTER           (1<<2)
  78. #define IORESOURCE_DMA_BYTE             (1<<3)
  79. #define IORESOURCE_DMA_WORD             (1<<4)
  80.  
  81. #define IORESOURCE_DMA_SPEED_MASK       (3<<6)
  82. #define IORESOURCE_DMA_COMPATIBLE       (0<<6)
  83. #define IORESOURCE_DMA_TYPEA            (1<<6)
  84. #define IORESOURCE_DMA_TYPEB            (2<<6)
  85. #define IORESOURCE_DMA_TYPEF            (3<<6)
  86.  
  87. /* PnP memory I/O specific bits (IORESOURCE_BITS) */
  88. #define IORESOURCE_MEM_WRITEABLE        (1<<0)  /* dup: IORESOURCE_READONLY */
  89. #define IORESOURCE_MEM_CACHEABLE        (1<<1)  /* dup: IORESOURCE_CACHEABLE */
  90. #define IORESOURCE_MEM_RANGELENGTH      (1<<2)  /* dup: IORESOURCE_RANGELENGTH */
  91. #define IORESOURCE_MEM_TYPE_MASK        (3<<3)
  92. #define IORESOURCE_MEM_8BIT             (0<<3)
  93. #define IORESOURCE_MEM_16BIT            (1<<3)
  94. #define IORESOURCE_MEM_8AND16BIT        (2<<3)
  95. #define IORESOURCE_MEM_32BIT            (3<<3)
  96. #define IORESOURCE_MEM_SHADOWABLE       (1<<5)  /* dup: IORESOURCE_SHADOWABLE */
  97. #define IORESOURCE_MEM_EXPANSIONROM     (1<<6)
  98.  
  99. /* PnP I/O specific bits (IORESOURCE_BITS) */
  100. #define IORESOURCE_IO_16BIT_ADDR        (1<<0)
  101. #define IORESOURCE_IO_FIXED             (1<<1)
  102.  
  103. /* PCI ROM control bits (IORESOURCE_BITS) */
  104. #define IORESOURCE_ROM_ENABLE           (1<<0)  /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */
  105. #define IORESOURCE_ROM_SHADOW           (1<<1)  /* ROM is copy at C000:0 */
  106. #define IORESOURCE_ROM_COPY             (1<<2)  /* ROM is alloc'd copy, resource field overlaid */
  107. #define IORESOURCE_ROM_BIOS_COPY        (1<<3)  /* ROM is BIOS copy, resource field overlaid */
  108.  
  109. /* PCI control bits.  Shares IORESOURCE_BITS with above PCI ROM.  */
  110. #define IORESOURCE_PCI_FIXED            (1<<4)  /* Do not move resource */
  111.  
  112. /* PC/ISA/whatever - the normal PC address spaces: IO and memory */
  113. extern struct resource ioport_resource;
  114. extern struct resource iomem_resource;
  115.  
  116. static inline resource_size_t resource_size(const struct resource *res)
  117. {
  118.         return res->end - res->start + 1;
  119. }
  120. static inline unsigned long resource_type(const struct resource *res)
  121. {
  122.         return res->flags & IORESOURCE_TYPE_BITS;
  123. }
  124.  
  125.  
  126. #endif /* __ASSEMBLY__ */
  127. #endif  /* _LINUX_IOPORT_H */
  128.