Edit File: agp_backend.h
/* * 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 #include <linux/list.h> 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; bool cant_use_aperture; unsigned long page_mask; const 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; struct page **pages; size_t page_count; int key; int num_scratch_pages; off_t pg_start; u32 type; u32 physical; bool is_bound; bool is_flushed; /* list of agp_memory mapped to the aperture */ struct list_head mapped_list; /* DMA-mapped addresses */ struct scatterlist *sg_list; int num_sg; }; #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 *); #endif /* _AGP_BACKEND_H */