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Diffstat (limited to 'include/linux/agp_backend.h')
| -rw-r--r-- | include/linux/agp_backend.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h new file mode 100644 index 000000000..eaf6cd75a --- /dev/null +++ b/include/linux/agp_backend.h @@ -0,0 +1,109 @@ +/* + * 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 */ |