1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * AGPGART backend specific includes. Not for userspace consumption. 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 2004 Silicon Graphics, Inc. 5*4882a593Smuzhiyun * Copyright (C) 2002-2003 Dave Jones 6*4882a593Smuzhiyun * Copyright (C) 1999 Jeff Hartmann 7*4882a593Smuzhiyun * Copyright (C) 1999 Precision Insight, Inc. 8*4882a593Smuzhiyun * Copyright (C) 1999 Xi Graphics, Inc. 9*4882a593Smuzhiyun * 10*4882a593Smuzhiyun * Permission is hereby granted, free of charge, to any person obtaining a 11*4882a593Smuzhiyun * copy of this software and associated documentation files (the "Software"), 12*4882a593Smuzhiyun * to deal in the Software without restriction, including without limitation 13*4882a593Smuzhiyun * the rights to use, copy, modify, merge, publish, distribute, sublicense, 14*4882a593Smuzhiyun * and/or sell copies of the Software, and to permit persons to whom the 15*4882a593Smuzhiyun * Software is furnished to do so, subject to the following conditions: 16*4882a593Smuzhiyun * 17*4882a593Smuzhiyun * The above copyright notice and this permission notice shall be included 18*4882a593Smuzhiyun * in all copies or substantial portions of the Software. 19*4882a593Smuzhiyun * 20*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 21*4882a593Smuzhiyun * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22*4882a593Smuzhiyun * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23*4882a593Smuzhiyun * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 24*4882a593Smuzhiyun * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 25*4882a593Smuzhiyun * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 26*4882a593Smuzhiyun * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27*4882a593Smuzhiyun * 28*4882a593Smuzhiyun */ 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #ifndef _AGP_BACKEND_H 31*4882a593Smuzhiyun #define _AGP_BACKEND_H 1 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #include <linux/list.h> 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun enum chipset_type { 36*4882a593Smuzhiyun NOT_SUPPORTED, 37*4882a593Smuzhiyun SUPPORTED, 38*4882a593Smuzhiyun }; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun struct agp_version { 41*4882a593Smuzhiyun u16 major; 42*4882a593Smuzhiyun u16 minor; 43*4882a593Smuzhiyun }; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun struct agp_kern_info { 46*4882a593Smuzhiyun struct agp_version version; 47*4882a593Smuzhiyun struct pci_dev *device; 48*4882a593Smuzhiyun enum chipset_type chipset; 49*4882a593Smuzhiyun unsigned long mode; 50*4882a593Smuzhiyun unsigned long aper_base; 51*4882a593Smuzhiyun size_t aper_size; 52*4882a593Smuzhiyun int max_memory; /* In pages */ 53*4882a593Smuzhiyun int current_memory; 54*4882a593Smuzhiyun bool cant_use_aperture; 55*4882a593Smuzhiyun unsigned long page_mask; 56*4882a593Smuzhiyun const struct vm_operations_struct *vm_ops; 57*4882a593Smuzhiyun }; 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun /* 60*4882a593Smuzhiyun * The agp_memory structure has information about the block of agp memory 61*4882a593Smuzhiyun * allocated. A caller may manipulate the next and prev pointers to link 62*4882a593Smuzhiyun * each allocated item into a list. These pointers are ignored by the backend. 63*4882a593Smuzhiyun * Everything else should never be written to, but the caller may read any of 64*4882a593Smuzhiyun * the items to determine the status of this block of agp memory. 65*4882a593Smuzhiyun */ 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun struct agp_bridge_data; 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun struct agp_memory { 70*4882a593Smuzhiyun struct agp_memory *next; 71*4882a593Smuzhiyun struct agp_memory *prev; 72*4882a593Smuzhiyun struct agp_bridge_data *bridge; 73*4882a593Smuzhiyun struct page **pages; 74*4882a593Smuzhiyun size_t page_count; 75*4882a593Smuzhiyun int key; 76*4882a593Smuzhiyun int num_scratch_pages; 77*4882a593Smuzhiyun off_t pg_start; 78*4882a593Smuzhiyun u32 type; 79*4882a593Smuzhiyun u32 physical; 80*4882a593Smuzhiyun bool is_bound; 81*4882a593Smuzhiyun bool is_flushed; 82*4882a593Smuzhiyun /* list of agp_memory mapped to the aperture */ 83*4882a593Smuzhiyun struct list_head mapped_list; 84*4882a593Smuzhiyun /* DMA-mapped addresses */ 85*4882a593Smuzhiyun struct scatterlist *sg_list; 86*4882a593Smuzhiyun int num_sg; 87*4882a593Smuzhiyun }; 88*4882a593Smuzhiyun 89*4882a593Smuzhiyun #define AGP_NORMAL_MEMORY 0 90*4882a593Smuzhiyun 91*4882a593Smuzhiyun #define AGP_USER_TYPES (1 << 16) 92*4882a593Smuzhiyun #define AGP_USER_MEMORY (AGP_USER_TYPES) 93*4882a593Smuzhiyun #define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1) 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun extern struct agp_bridge_data *agp_bridge; 96*4882a593Smuzhiyun extern struct list_head agp_bridges; 97*4882a593Smuzhiyun 98*4882a593Smuzhiyun extern struct agp_bridge_data *(*agp_find_bridge)(struct pci_dev *); 99*4882a593Smuzhiyun 100*4882a593Smuzhiyun extern void agp_free_memory(struct agp_memory *); 101*4882a593Smuzhiyun extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, u32); 102*4882a593Smuzhiyun extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *); 103*4882a593Smuzhiyun extern int agp_bind_memory(struct agp_memory *, off_t); 104*4882a593Smuzhiyun extern int agp_unbind_memory(struct agp_memory *); 105*4882a593Smuzhiyun extern void agp_enable(struct agp_bridge_data *, u32); 106*4882a593Smuzhiyun extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *); 107*4882a593Smuzhiyun extern void agp_backend_release(struct agp_bridge_data *); 108*4882a593Smuzhiyun 109*4882a593Smuzhiyun #endif /* _AGP_BACKEND_H */ 110