1 /**************************************************************************
3 * Copyright 2006 VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 /* Provide additional functionality on top of bufmgr buffers:
29 * - 2d semantics and blit operations
30 * - refcounting of buffers for multiple images in a buffer.
31 * - refcounting of buffer mappings.
32 * - some logic for moving the buffers to the best memory pools for
35 * Most of this is to make it easier to implement the fixed-layout
36 * mipmap tree required by intel hardware in the face of GL's
37 * programming interface where each image can be specifed in random
38 * order and it isn't clear what layout the tree should have until the
42 #include <sys/ioctl.h>
45 #include "main/hash.h"
46 #include "brw_context.h"
47 #include "intel_regions.h"
48 #include "intel_blit.h"
49 #include "intel_buffer_objects.h"
50 #include "intel_bufmgr.h"
51 #include "intel_batchbuffer.h"
53 #define FILE_DEBUG_FLAG DEBUG_REGION
55 /* This should be set to the maximum backtrace size desired.
56 * Set it to 0 to disable backtrace debugging.
58 #define DEBUG_BACKTRACE_SIZE 0
60 #if DEBUG_BACKTRACE_SIZE == 0
61 /* Use the standard debug output */
62 #define _DBG(...) DBG(__VA_ARGS__)
64 /* Use backtracing debug output */
65 #define _DBG(...) {debug_backtrace(); DBG(__VA_ARGS__);}
67 /* Backtracing debug support */
73 void *trace
[DEBUG_BACKTRACE_SIZE
];
74 char **strings
= NULL
;
78 traceSize
= backtrace(trace
, DEBUG_BACKTRACE_SIZE
);
79 strings
= backtrace_symbols(trace
, traceSize
);
80 if (strings
== NULL
) {
85 /* Spit out all the strings with a colon separator. Ignore
86 * the first, since we don't really care about the call
87 * to debug_backtrace() itself. Skip until the final "/" in
88 * the trace to avoid really long lines.
90 for (i
= 1; i
< traceSize
; i
++) {
91 char *p
= strings
[i
], *slash
= strings
[i
];
101 /* Free up the memory, and we're done */
107 static struct intel_region
*
108 intel_region_alloc_internal(struct intel_screen
*screen
,
110 GLuint width
, GLuint height
, GLuint pitch
,
111 uint32_t tiling
, drm_intel_bo
*buffer
)
113 struct intel_region
*region
;
115 region
= calloc(sizeof(*region
), 1);
120 region
->width
= width
;
121 region
->height
= height
;
122 region
->pitch
= pitch
;
123 region
->refcount
= 1;
125 region
->tiling
= tiling
;
127 _DBG("%s <-- %p\n", __FUNCTION__
, region
);
131 struct intel_region
*
132 intel_region_alloc(struct intel_screen
*screen
,
134 GLuint cpp
, GLuint width
, GLuint height
,
135 bool expect_accelerated_upload
)
137 drm_intel_bo
*buffer
;
138 unsigned long flags
= 0;
139 unsigned long aligned_pitch
;
140 struct intel_region
*region
;
142 if (expect_accelerated_upload
)
143 flags
|= BO_ALLOC_FOR_RENDER
;
145 buffer
= drm_intel_bo_alloc_tiled(screen
->bufmgr
, "region",
147 &tiling
, &aligned_pitch
, flags
);
151 region
= intel_region_alloc_internal(screen
, cpp
, width
, height
,
152 aligned_pitch
, tiling
, buffer
);
153 if (region
== NULL
) {
154 drm_intel_bo_unreference(buffer
);
162 intel_region_reference(struct intel_region
**dst
, struct intel_region
*src
)
164 _DBG("%s: %p(%d) -> %p(%d)\n", __FUNCTION__
,
165 *dst
, *dst
? (*dst
)->refcount
: 0, src
, src
? src
->refcount
: 0);
169 intel_region_release(dst
);
178 intel_region_release(struct intel_region
**region_handle
)
180 struct intel_region
*region
= *region_handle
;
182 if (region
== NULL
) {
183 _DBG("%s NULL\n", __FUNCTION__
);
187 _DBG("%s %p %d\n", __FUNCTION__
, region
, region
->refcount
- 1);
189 ASSERT(region
->refcount
> 0);
192 if (region
->refcount
== 0) {
193 drm_intel_bo_unreference(region
->bo
);
197 *region_handle
= NULL
;