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#
| 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#
|
27#
28
29#include <sys/bus.h>
30
31#
32# The AGP interface is used internally to the agp driver to isolate the
33# differences between various AGP chipsets into chipset mini drivers. It
34# should not be used outside the AGP driver. The kernel api for accessing
35# AGP functionality is described in <dev/agp/agpvar.h>
36#
37INTERFACE agp;
38
| 27#
28
29#include <sys/bus.h>
30
31#
32# The AGP interface is used internally to the agp driver to isolate the
33# differences between various AGP chipsets into chipset mini drivers. It
34# should not be used outside the AGP driver. The kernel api for accessing
35# AGP functionality is described in <dev/agp/agpvar.h>
36#
37INTERFACE agp;
38
|
39#
40# Return the current aperture size.
41#
42METHOD u_int32_t get_aperture {
43 device_t dev;
44};
45
46#
47# Set the size of the aperture. Return EINVAL on error or 0 on success.
48#
49METHOD int set_aperture {
50 device_t dev;
51 u_int32_t aperture;
52};
53
54#
55# Bind a single page in the AGP aperture to a given physical address.
56# The offset is a byte offset within the aperture which must be
57# aligned to an AGP page boundary.
58#
59METHOD int bind_page {
60 device_t dev;
61 vm_offset_t offset;
62 vm_offset_t physical;
63};
64
65#
66# Unbind a single page in the AGP aperture.
67#
68METHOD int unbind_page {
69 device_t dev;
70 vm_offset_t offset;
71};
72
73#
74# Flush the GATT TLB. This is used after a call to bind_page to
75# ensure that any mappings cached in the chipset are discarded.
76#
77METHOD void flush_tlb {
78 device_t dev;
79};
80
81#
82# Enable the agp hardware with the relavent mode. The mode bits are
83# defined in <dev/agp/agpreg.h>
84#
85METHOD int enable {
86 device_t dev;
87 u_int32_t mode;
88};
89
90#
91# Allocate memory of a given type. The type is a chipset-specific
92# code which is used by certain integrated agp graphics chips
93# (basically just the i810 for now) to access special features of
94# the chipset. An opaque handle representing the memory region is
95# returned and can be used as an argument to free_memory, bind_memory
96# and unbind_memory.
97#
98# The size is specified in bytes but must be a multiple of the AGP
99# page size.
100#
101METHOD struct agp_memory * alloc_memory {
102 device_t dev;
103 int type;
104 vm_size_t size;
105};
106
107#
108# Free a memory region previously allocated with alloc_memory. Return
109# EBUSY if the memory is bound.
110#
111METHOD int free_memory {
112 device_t dev;
113 struct agp_memory *mem;
114};
115
116#
117# Bind a memory region to a specific byte offset within the chipset's
118# AGP aperture. This effectively defines a range of contiguous
119# physical address which alias the (possibly uncontiguous) pages in
120# the memory region.
121#
122METHOD int bind_memory {
123 device_t dev;
124 struct agp_memory *mem;
125 vm_offset_t offset;
126};
127
128#
129# Unbind a memory region bound with bind_memory.
130#
131METHOD int unbind_memory {
132 device_t dev;
133 struct agp_memory *handle;
134};
| 47#
48# Return the current aperture size.
49#
50METHOD u_int32_t get_aperture {
51 device_t dev;
52};
53
54#
55# Set the size of the aperture. Return EINVAL on error or 0 on success.
56#
57METHOD int set_aperture {
58 device_t dev;
59 u_int32_t aperture;
60};
61
62#
63# Bind a single page in the AGP aperture to a given physical address.
64# The offset is a byte offset within the aperture which must be
65# aligned to an AGP page boundary.
66#
67METHOD int bind_page {
68 device_t dev;
69 vm_offset_t offset;
70 vm_offset_t physical;
71};
72
73#
74# Unbind a single page in the AGP aperture.
75#
76METHOD int unbind_page {
77 device_t dev;
78 vm_offset_t offset;
79};
80
81#
82# Flush the GATT TLB. This is used after a call to bind_page to
83# ensure that any mappings cached in the chipset are discarded.
84#
85METHOD void flush_tlb {
86 device_t dev;
87};
88
89#
90# Enable the agp hardware with the relavent mode. The mode bits are
91# defined in <dev/agp/agpreg.h>
92#
93METHOD int enable {
94 device_t dev;
95 u_int32_t mode;
96};
97
98#
99# Allocate memory of a given type. The type is a chipset-specific
100# code which is used by certain integrated agp graphics chips
101# (basically just the i810 for now) to access special features of
102# the chipset. An opaque handle representing the memory region is
103# returned and can be used as an argument to free_memory, bind_memory
104# and unbind_memory.
105#
106# The size is specified in bytes but must be a multiple of the AGP
107# page size.
108#
109METHOD struct agp_memory * alloc_memory {
110 device_t dev;
111 int type;
112 vm_size_t size;
113};
114
115#
116# Free a memory region previously allocated with alloc_memory. Return
117# EBUSY if the memory is bound.
118#
119METHOD int free_memory {
120 device_t dev;
121 struct agp_memory *mem;
122};
123
124#
125# Bind a memory region to a specific byte offset within the chipset's
126# AGP aperture. This effectively defines a range of contiguous
127# physical address which alias the (possibly uncontiguous) pages in
128# the memory region.
129#
130METHOD int bind_memory {
131 device_t dev;
132 struct agp_memory *mem;
133 vm_offset_t offset;
134};
135
136#
137# Unbind a memory region bound with bind_memory.
138#
139METHOD int unbind_memory {
140 device_t dev;
141 struct agp_memory *handle;
142};
|