agp_backend.h
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上传日期:2009-04-28
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- /*
- * 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
- #ifdef __KERNEL__
- #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;
- };
- #define AGP_NORMAL_MEMORY 0
- 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 /* __KERNEL__ */
- #endif /* _AGP_BACKEND_H */