1 /*
2 * Copyright © 2012 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #include "main/context.h"
25
26 #include "brw_context.h"
27
28 /**
29 * Query information about GPU resets observed by this context
30 *
31 * Called via \c dd_function_table::GetGraphicsResetStatus.
32 */
33 GLenum
brw_get_graphics_reset_status(struct gl_context * ctx)34 brw_get_graphics_reset_status(struct gl_context *ctx)
35 {
36 struct brw_context *brw = brw_context(ctx);
37 int err;
38 uint32_t reset_count;
39 uint32_t active;
40 uint32_t pending;
41
42 /* If hardware contexts are not being used (or
43 * DRM_IOCTL_I915_GET_RESET_STATS is not supported), this function should
44 * not be accessible.
45 */
46 assert(brw->hw_ctx != NULL);
47
48 /* A reset status other than NO_ERROR was returned last time. I915 returns
49 * nonzero active/pending only if reset has been encountered and completed.
50 * Return NO_ERROR from now on.
51 */
52 if (brw->reset_count != 0)
53 return GL_NO_ERROR;
54
55 err = drm_intel_get_reset_stats(brw->hw_ctx, &reset_count, &active,
56 &pending);
57 if (err)
58 return GL_NO_ERROR;
59
60 /* A reset was observed while a batch from this context was executing.
61 * Assume that this context was at fault.
62 */
63 if (active != 0) {
64 brw->reset_count = reset_count;
65 return GL_GUILTY_CONTEXT_RESET_ARB;
66 }
67
68 /* A reset was observed while a batch from this context was in progress,
69 * but the batch was not executing. In this case, assume that the context
70 * was not at fault.
71 */
72 if (pending != 0) {
73 brw->reset_count = reset_count;
74 return GL_INNOCENT_CONTEXT_RESET_ARB;
75 }
76
77 return GL_NO_ERROR;
78 }
79
80 void
brw_check_for_reset(struct brw_context * brw)81 brw_check_for_reset(struct brw_context *brw)
82 {
83 uint32_t reset_count;
84 uint32_t active;
85 uint32_t pending;
86 int err;
87
88 err = drm_intel_get_reset_stats(brw->hw_ctx, &reset_count, &active,
89 &pending);
90 if (err)
91 return;
92
93 if (active > 0 || pending > 0)
94 _mesa_set_context_lost_dispatch(&brw->ctx);
95 }
96