1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/**************************************************************************
*
* Copyright � 2007 Intel Corporation
* Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/*
* Authors: Thomas Hellstr�m <thomas-at-tungstengraphics-dot-com>
* Keith Whitwell <keithw-at-tungstengraphics-dot-com>
* Eric Anholt <eric@anholt.net>
*/
#ifndef _DRI_BUFMGR_H_
#define _DRI_BUFMGR_H_
#include <xf86drm.h>
typedef struct _dri_bufmgr dri_bufmgr;
typedef struct _dri_bo dri_bo;
typedef struct _dri_fence dri_fence;
struct _dri_bo {
/** Size in bytes of the buffer object. */
unsigned long size;
/**
* Card virtual address (offset from the beginning of the aperture) for the
* object. Only valid while validated.
*/
unsigned long offset;
/**
* Virtual address for accessing the buffer data. Only valid while mapped.
*/
void *virtual;
/** Buffer manager context associated with this buffer object */
dri_bufmgr *bufmgr;
};
struct _dri_fence {
/**
* This is an ORed mask of DRM_BO_FLAG_READ, DRM_BO_FLAG_WRITE, and
* DRM_FLAG_EXE indicating the operations associated with this fence.
*
* It is constant for the life of the fence object.
*/
unsigned int type;
/** Buffer manager context associated with this fence */
dri_bufmgr *bufmgr;
};
/**
* Context for a buffer manager instance.
*
* Contains public methods followed by private storage for the buffer manager.
*/
struct _dri_bufmgr {
/**
* Allocate a buffer object.
*
* Buffer objects are not necessarily initially mapped into CPU virtual
* address space or graphics device aperture. They must be mapped using
* bo_map() to be used by the CPU, and validated for use using bo_validate()
* to be used from the graphics device.
*/
dri_bo *(*bo_alloc)(dri_bufmgr *bufmgr_ctx, const char *name,
unsigned long size, unsigned int alignment,
uint64_t location_mask);
/**
* Allocates a buffer object for a static allocation.
*
* Static allocations are ones such as the front buffer that are offered by
* the X Server, which are never evicted and never moved.
*/
dri_bo *(*bo_alloc_static)(dri_bufmgr *bufmgr_ctx, const char *name,
unsigned long offset, unsigned long size,
void *virtual, uint64_t location_mask);
/** Takes a reference on a buffer object */
void (*bo_reference)(dri_bo *bo);
/**
* Releases a reference on a buffer object, freeing the data if
* rerefences remain.
*/
void (*bo_unreference)(dri_bo *bo);
/**
* Maps the buffer into userspace.
*
* This function will block waiting for any existing fence on the buffer to
* clear, first. The resulting mapping is available at buf->virtual.
\ */
int (*bo_map)(dri_bo *buf, GLboolean write_enable);
/** Reduces the refcount on the userspace mapping of the buffer object. */
int (*bo_unmap)(dri_bo *buf);
/** Takes a reference on a fence object */
void (*fence_reference)(dri_fence *fence);
/**
* Releases a reference on a fence object, freeing the data if
* rerefences remain.
*/
void (*fence_unreference)(dri_fence *fence);
/**
* Blocks until the given fence is signaled.
*/
void (*fence_wait)(dri_fence *fence);
/**
* Tears down the buffer manager instance.
*/
void (*destroy)(dri_bufmgr *bufmgr);
/**
* Add relocation entry in reloc_buf, which will be updated with the
* target buffer's real offset on on command submission.
*
* Relocations remain in place for the lifetime of the buffer object.
*
* \param reloc_buf Buffer to write the relocation into.
* \param flags BO flags to be used in validating the target buffer.
* Applicable flags include:
* - DRM_BO_FLAG_READ: The buffer will be read in the process of
* command execution.
* - DRM_BO_FLAG_WRITE: The buffer will be written in the process of
* command execution.
* - DRM_BO_FLAG_MEM_TT: The buffer should be validated in TT memory.
* - DRM_BO_FLAG_MEM_VRAM: The buffer should be validated in video
* memory.
* \param delta Constant value to be added to the relocation target's offset.
* \param offset Byte offset within batch_buf of the relocated pointer.
* \param target Buffer whose offset should be written into the relocation
* entry.
*/
int (*emit_reloc)(dri_bo *reloc_buf, uint64_t flags, GLuint delta,
GLuint offset, dri_bo *target);
/**
* Processes the relocations, either in userland or by converting the list
* for use in batchbuffer submission.
*
* Kernel-based implementations will return a pointer to the arguments
* to be handed with batchbuffer submission to the kernel. The userland
* implementation performs the buffer validation and emits relocations
* into them the appopriate order.
*
* \param batch_buf buffer at the root of the tree of relocations
* \param count returns the number of buffers validated.
* \return relocation record for use in command submission.
* */
void *(*process_relocs)(dri_bo *batch_buf, GLuint *count);
void (*post_submit)(dri_bo *batch_buf, dri_fence **fence);
int (*check_aperture_space)(dri_bo *bo);
GLboolean debug; /**< Enables verbose debugging printouts */
};
dri_bo *dri_bo_alloc(dri_bufmgr *bufmgr, const char *name, unsigned long size,
unsigned int alignment, uint64_t location_mask);
dri_bo *dri_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
unsigned long offset, unsigned long size,
void *virtual, uint64_t location_mask);
void dri_bo_reference(dri_bo *bo);
void dri_bo_unreference(dri_bo *bo);
int dri_bo_map(dri_bo *buf, GLboolean write_enable);
int dri_bo_unmap(dri_bo *buf);
void dri_fence_wait(dri_fence *fence);
void dri_fence_reference(dri_fence *fence);
void dri_fence_unreference(dri_fence *fence);
void dri_bo_subdata(dri_bo *bo, unsigned long offset,
unsigned long size, const void *data);
void dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
unsigned long size, void *data);
void dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr);
dri_bufmgr *dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
unsigned long size,
unsigned int (*fence_emit)(void *private),
int (*fence_wait)(void *private,
unsigned int cookie),
void *driver_priv);
void dri_bufmgr_set_debug(dri_bufmgr *bufmgr, GLboolean enable_debug);
void dri_bo_fake_disable_backing_store(dri_bo *bo,
void (*invalidate_cb)(dri_bo *bo,
void *ptr),
void *ptr);
void dri_bufmgr_destroy(dri_bufmgr *bufmgr);
int dri_emit_reloc(dri_bo *reloc_buf, uint64_t flags, GLuint delta,
GLuint offset, dri_bo *target_buf);
void *dri_process_relocs(dri_bo *batch_buf, uint32_t *count);
void dri_post_process_relocs(dri_bo *batch_buf);
void dri_post_submit(dri_bo *batch_buf, dri_fence **last_fence);
int dri_bufmgr_check_aperture_space(dri_bo *bo);
#endif
|
