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a030ce4477
This patch allows drm to populate an agpgart structure with pages of its own. It's needed for the new drm memory manager which dynamically flips pages in and out of AGP. The patch modifies the generic functions as well as the intel agp driver. The intel drm driver is currently the only one supporting the new memory manager. Other agp drivers may need some minor fixing up once they have a corresponding memory manager enabled drm driver. AGP memory types >= AGP_USER_TYPES are not populated by the agpgart driver, but the drm is expected to do that, as well as taking care of cache- and tlb flushing when needed. It's not possible to request these types from user space using agpgart ioctls. The Intel driver also gets a new memory type for pages that can be bound cached to the intel GTT. Signed-off-by: Thomas Hellstrom <thomas@tungstengraphics.com> Signed-off-by: Dave Jones <davej@redhat.com>
115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
/*
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* AGPGART backend specific includes. Not for userspace consumption.
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*
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* Copyright (C) 2004 Silicon Graphics, Inc.
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* Copyright (C) 2002-2003 Dave Jones
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* Copyright (C) 1999 Jeff Hartmann
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* Copyright (C) 1999 Precision Insight, Inc.
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* Copyright (C) 1999 Xi Graphics, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef _AGP_BACKEND_H
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#define _AGP_BACKEND_H 1
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#ifdef __KERNEL__
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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enum chipset_type {
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NOT_SUPPORTED,
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SUPPORTED,
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};
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struct agp_version {
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u16 major;
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u16 minor;
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};
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struct agp_kern_info {
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struct agp_version version;
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struct pci_dev *device;
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enum chipset_type chipset;
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unsigned long mode;
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unsigned long aper_base;
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size_t aper_size;
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int max_memory; /* In pages */
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int current_memory;
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int cant_use_aperture;
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unsigned long page_mask;
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struct vm_operations_struct *vm_ops;
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};
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/*
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* The agp_memory structure has information about the block of agp memory
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* allocated. A caller may manipulate the next and prev pointers to link
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* each allocated item into a list. These pointers are ignored by the backend.
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* Everything else should never be written to, but the caller may read any of
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* the items to determine the status of this block of agp memory.
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*/
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struct agp_bridge_data;
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struct agp_memory {
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struct agp_memory *next;
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struct agp_memory *prev;
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struct agp_bridge_data *bridge;
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unsigned long *memory;
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size_t page_count;
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int key;
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int num_scratch_pages;
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off_t pg_start;
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u32 type;
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u32 physical;
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u8 is_bound;
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u8 is_flushed;
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u8 vmalloc_flag;
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};
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#define AGP_NORMAL_MEMORY 0
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#define AGP_USER_TYPES (1 << 16)
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#define AGP_USER_MEMORY (AGP_USER_TYPES)
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#define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1)
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extern struct agp_bridge_data *agp_bridge;
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extern struct list_head agp_bridges;
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extern struct agp_bridge_data *(*agp_find_bridge)(struct pci_dev *);
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extern void agp_free_memory(struct agp_memory *);
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extern struct agp_memory *agp_allocate_memory(struct agp_bridge_data *, size_t, u32);
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extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *);
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extern int agp_bind_memory(struct agp_memory *, off_t);
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extern int agp_unbind_memory(struct agp_memory *);
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extern void agp_enable(struct agp_bridge_data *, u32);
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extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *);
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extern void agp_backend_release(struct agp_bridge_data *);
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#endif /* __KERNEL__ */
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#endif /* _AGP_BACKEND_H */
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