backend.c (597473720f4dc69749542bfcfed4a927a43d935e) backend.c (ffe9d02e4152ab653652717a1907d0058b764d58)
1/*
2 * AGPGART driver backend routines.
3 * Copyright (C) 2004 Silicon Graphics, Inc.
4 * Copyright (C) 2002-2003 Dave Jones.
5 * Copyright (C) 1999 Jeff Hartmann.
6 * Copyright (C) 1999 Precision Insight, Inc.
7 * Copyright (C) 1999 Xi Graphics, Inc.
8 *

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57struct agp_bridge_data *agp_bridge;
58LIST_HEAD(agp_bridges);
59EXPORT_SYMBOL(agp_bridge);
60EXPORT_SYMBOL(agp_bridges);
61EXPORT_SYMBOL(agp_find_bridge);
62
63/**
64 * agp_backend_acquire - attempt to acquire an agp backend.
1/*
2 * AGPGART driver backend routines.
3 * Copyright (C) 2004 Silicon Graphics, Inc.
4 * Copyright (C) 2002-2003 Dave Jones.
5 * Copyright (C) 1999 Jeff Hartmann.
6 * Copyright (C) 1999 Precision Insight, Inc.
7 * Copyright (C) 1999 Xi Graphics, Inc.
8 *

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57struct agp_bridge_data *agp_bridge;
58LIST_HEAD(agp_bridges);
59EXPORT_SYMBOL(agp_bridge);
60EXPORT_SYMBOL(agp_bridges);
61EXPORT_SYMBOL(agp_find_bridge);
62
63/**
64 * agp_backend_acquire - attempt to acquire an agp backend.
65 * @pdev: the PCI device
65 *
66 */
67struct agp_bridge_data *agp_backend_acquire(struct pci_dev *pdev)
68{
69 struct agp_bridge_data *bridge;
70
71 bridge = agp_find_bridge(pdev);
72

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78 atomic_inc(&bridge->agp_in_use);
79 return bridge;
80}
81EXPORT_SYMBOL(agp_backend_acquire);
82
83
84/**
85 * agp_backend_release - release the lock on the agp backend.
66 *
67 */
68struct agp_bridge_data *agp_backend_acquire(struct pci_dev *pdev)
69{
70 struct agp_bridge_data *bridge;
71
72 bridge = agp_find_bridge(pdev);
73

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79 atomic_inc(&bridge->agp_in_use);
80 return bridge;
81}
82EXPORT_SYMBOL(agp_backend_acquire);
83
84
85/**
86 * agp_backend_release - release the lock on the agp backend.
87 * @bridge: the AGP backend to release
86 *
87 * The caller must insure that the graphics aperture translation table
88 * is read for use by another entity.
89 *
90 * (Ensure that all memory it bound is unbound.)
91 */
92void agp_backend_release(struct agp_bridge_data *bridge)
93{

--- 273 unchanged lines hidden --- 		88 *
89 * The caller must insure that the graphics aperture translation table
90 * is read for use by another entity.
91 *
92 * (Ensure that all memory it bound is unbound.)
93 */
94void agp_backend_release(struct agp_bridge_data *bridge)
95{

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