| /* |
| * AGPGART backend specific includes. Not for userspace consumption. |
| * |
| * Copyright (C) 2004 Silicon Graphics, Inc. |
| * Copyright (C) 2002-2003 Dave Jones |
| * Copyright (C) 1999 Jeff Hartmann |
| * Copyright (C) 1999 Precision Insight, Inc. |
| * Copyright (C) 1999 Xi Graphics, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE |
| * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| |
| #ifndef _AGP_BACKEND_H |
| #define _AGP_BACKEND_H 1 |
| |
| #ifndef TRUE |
| #define TRUE 1 |
| #endif |
| |
| #ifndef FALSE |
| #define FALSE 0 |
| #endif |
| |
| enum chipset_type { |
| NOT_SUPPORTED, |
| SUPPORTED, |
| }; |
| |
| struct agp_version { |
| u16 major; |
| u16 minor; |
| }; |
| |
| struct agp_kern_info { |
| struct agp_version version; |
| struct pci_dev *device; |
| enum chipset_type chipset; |
| unsigned long mode; |
| unsigned long aper_base; |
| size_t aper_size; |
| int max_memory; /* In pages */ |
| int current_memory; |
| int cant_use_aperture; |
| unsigned long page_mask; |
| struct vm_operations_struct *vm_ops; |
| }; |
| |
| /* |
| * The agp_memory structure has information about the block of agp memory |
| * allocated. A caller may manipulate the next and prev pointers to link |
| * each allocated item into a list. These pointers are ignored by the backend. |
| * Everything else should never be written to, but the caller may read any of |
| * the items to determine the status of this block of agp memory. |
| */ |
| |
| struct agp_bridge_data; |
| |
| struct agp_memory { |
| struct agp_memory *next; |
| struct agp_memory *prev; |
| struct agp_bridge_data *bridge; |
| unsigned long *memory; |
| size_t page_count; |
| int key; |
| int num_scratch_pages; |
| off_t pg_start; |
| u32 type; |
| u32 physical; |
| u8 is_bound; |
| u8 is_flushed; |
| u8 vmalloc_flag; |
| }; |
| |
| #define AGP_NORMAL_MEMORY 0 |
| |
| #define AGP_USER_TYPES (1 << 16) |
| #define AGP_USER_MEMORY (AGP_USER_TYPES) |
| #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) |
| |
| extern struct agp_bridge_data *agp_bridge; |
| extern struct list_head agp_bridges; |
| |
| extern struct agp_bridge_data *(*agp_find_bridge)(struct pci_dev *); |
| |
| extern void agp_free_memory(struct agp_memory *); |
| extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, u32); |
| extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *); |
| extern int agp_bind_memory(struct agp_memory *, off_t); |
| extern int agp_unbind_memory(struct agp_memory *); |
| extern void agp_enable(struct agp_bridge_data *, u32); |
| extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *); |
| extern void agp_backend_release(struct agp_bridge_data *); |
| extern void agp_flush_chipset(struct agp_bridge_data *); |
| |
| #endif /* _AGP_BACKEND_H */ |