agp_backend.h 3.4 KB

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  1. /*
  2. * AGPGART backend specific includes. Not for userspace consumption.
  3. *
  4. * Copyright (C) 2004 Silicon Graphics, Inc.
  5. * Copyright (C) 2002-2003 Dave Jones
  6. * Copyright (C) 1999 Jeff Hartmann
  7. * Copyright (C) 1999 Precision Insight, Inc.
  8. * Copyright (C) 1999 Xi Graphics, Inc.
  9. *
  10. * Permission is hereby granted, free of charge, to any person obtaining a
  11. * copy of this software and associated documentation files (the "Software"),
  12. * to deal in the Software without restriction, including without limitation
  13. * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  14. * and/or sell copies of the Software, and to permit persons to whom the
  15. * Software is furnished to do so, subject to the following conditions:
  16. *
  17. * The above copyright notice and this permission notice shall be included
  18. * in all copies or substantial portions of the Software.
  19. *
  20. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21. * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  23. * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
  24. * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  25. * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  26. * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27. *
  28. */
  29. #ifndef _AGP_BACKEND_H
  30. #define _AGP_BACKEND_H 1
  31. #ifdef __KERNEL__
  32. #ifndef TRUE
  33. #define TRUE 1
  34. #endif
  35. #ifndef FALSE
  36. #define FALSE 0
  37. #endif
  38. enum chipset_type {
  39. NOT_SUPPORTED,
  40. SUPPORTED,
  41. };
  42. struct agp_version {
  43. u16 major;
  44. u16 minor;
  45. };
  46. struct agp_kern_info {
  47. struct agp_version version;
  48. struct pci_dev *device;
  49. enum chipset_type chipset;
  50. unsigned long mode;
  51. unsigned long aper_base;
  52. size_t aper_size;
  53. int max_memory; /* In pages */
  54. int current_memory;
  55. int cant_use_aperture;
  56. unsigned long page_mask;
  57. struct vm_operations_struct *vm_ops;
  58. };
  59. /*
  60. * The agp_memory structure has information about the block of agp memory
  61. * allocated. A caller may manipulate the next and prev pointers to link
  62. * each allocated item into a list. These pointers are ignored by the backend.
  63. * Everything else should never be written to, but the caller may read any of
  64. * the items to determine the status of this block of agp memory.
  65. */
  66. struct agp_bridge_data;
  67. struct agp_memory {
  68. struct agp_memory *next;
  69. struct agp_memory *prev;
  70. struct agp_bridge_data *bridge;
  71. unsigned long *memory;
  72. size_t page_count;
  73. int key;
  74. int num_scratch_pages;
  75. off_t pg_start;
  76. u32 type;
  77. u32 physical;
  78. u8 is_bound;
  79. u8 is_flushed;
  80. u8 vmalloc_flag;
  81. };
  82. #define AGP_NORMAL_MEMORY 0
  83. #define AGP_USER_TYPES (1 << 16)
  84. #define AGP_USER_MEMORY (AGP_USER_TYPES)
  85. #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1)
  86. extern struct agp_bridge_data *agp_bridge;
  87. extern struct list_head agp_bridges;
  88. extern struct agp_bridge_data *(*agp_find_bridge)(struct pci_dev *);
  89. extern void agp_free_memory(struct agp_memory *);
  90. extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, u32);
  91. extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *);
  92. extern int agp_bind_memory(struct agp_memory *, off_t);
  93. extern int agp_unbind_memory(struct agp_memory *);
  94. extern void agp_enable(struct agp_bridge_data *, u32);
  95. extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *);
  96. extern void agp_backend_release(struct agp_bridge_data *);
  97. #endif /* __KERNEL__ */
  98. #endif /* _AGP_BACKEND_H */