agppriv.h revision 61452 
1/*-
2 * Copyright (c) 2000 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$FreeBSD: head/sys/dev/agp/agppriv.h 61452 2000-06-09 16:04:30Z dfr $
27 */
28
29#ifndef _PCI_AGPPRIV_H_
30#define _PCI_AGPPRIV_H_
31
32/*
33 * This file *must not* be included by code outside the agp driver itself.
34 */
35
36#include <sys/agpio.h>
37#include <pci/agpvar.h>
38
39#define AGP_DEBUGxx
40
41#ifdef AGP_DEBUG
42#define AGP_DPF(x...) do {			\
43    printf("agp: ");				\
44    printf(##x);				\
45} while (0)
46#else
47#define AGP_DPF(x...) do {} while (0)
48#endif
49
50#include "agp_if.h"
51
52/*
53 * Data structure to describe an AGP memory allocation.
54 */
55TAILQ_HEAD(agp_memory_list, agp_memory);
56struct agp_memory {
57	TAILQ_ENTRY(agp_memory) am_link;	/* wiring for the tailq */
58	int		am_id;			/* unique id for block */
59	vm_size_t	am_size;		/* number of bytes allocated */
60	struct vm_object *am_obj;		/* VM object owning pages */
61	vm_offset_t	am_physical;		/* bogus hack for i810 */
62	vm_offset_t	am_offset;		/* page offset if bound */
63	int		am_is_bound;		/* non-zero if bound */
64};
65
66/*
67 * All chipset drivers must have this at the start of their softc.
68 */
69struct agp_softc {
70	struct resource	        *as_aperture;	/* location of aperture */
71	u_int32_t		as_maxmem;	/* allocation upper bound */
72	u_int32_t		as_allocated;	/* amount allocated */
73	enum agp_acquire_state	as_state;
74	struct agp_memory_list	as_memory;	/* list of allocated memory */
75	int			as_nextid;	/* next memory block id */
76	int			as_isopen;	/* user device is open */
77	dev_t			as_devnode;	/* from make_dev */
78	struct lock		as_lock;	/* lock for access to GATT */
79};
80
81struct agp_gatt {
82	u_int32_t	ag_entries;
83	u_int32_t      *ag_virtual;
84	vm_offset_t	ag_physical;
85};
86
87u_int8_t		agp_find_caps(device_t dev);
88struct agp_gatt	       *agp_alloc_gatt(device_t dev);
89void		        agp_free_gatt(struct agp_gatt *gatt);
90int			agp_generic_attach(device_t dev);
91int			agp_generic_detach(device_t dev);
92int			agp_generic_enable(device_t dev, u_int32_t mode);
93struct agp_memory      *agp_generic_alloc_memory(device_t dev, int type,
94						 vm_size_t size);
95int			agp_generic_free_memory(device_t dev,
96						struct agp_memory *mem);
97int			agp_generic_bind_memory(device_t dev,
98						struct agp_memory *mem,
99						vm_offset_t offset);
100int			agp_generic_unbind_memory(device_t dev,
101						  struct agp_memory *mem);
102
103#endif /* !_PCI_AGPPRIV_H_ */
104