1 /*
2 * Copyright © 2010 Daniel Vetter
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 DEALINGS
21 * IN THE SOFTWARE.
22 *
23 */
24
25 #include "drmP.h"
26 #include "drm.h"
27 #include "i915_drm.h"
28 #include "i915_drv.h"
29 #include "i915_trace.h"
30 #include "intel_drv.h"
31
i915_gem_restore_gtt_mappings(struct drm_device * dev)32 void i915_gem_restore_gtt_mappings(struct drm_device *dev)
33 {
34 struct drm_i915_private *dev_priv = dev->dev_private;
35 struct drm_i915_gem_object *obj;
36
37 /* First fill our portion of the GTT with scratch pages */
38 intel_gtt_clear_range(dev_priv->mm.gtt_start / PAGE_SIZE,
39 (dev_priv->mm.gtt_end - dev_priv->mm.gtt_start) / PAGE_SIZE);
40
41 list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
42 i915_gem_clflush_object(obj);
43
44 if (dev_priv->mm.gtt->needs_dmar) {
45 BUG_ON(!obj->sg_list);
46
47 intel_gtt_insert_sg_entries(obj->sg_list,
48 obj->num_sg,
49 obj->gtt_space->start
50 >> PAGE_SHIFT,
51 obj->agp_type);
52 } else
53 intel_gtt_insert_pages(obj->gtt_space->start
54 >> PAGE_SHIFT,
55 obj->base.size >> PAGE_SHIFT,
56 obj->pages,
57 obj->agp_type);
58 }
59
60 intel_gtt_chipset_flush();
61 }
62
i915_gem_gtt_bind_object(struct drm_i915_gem_object * obj)63 int i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj)
64 {
65 struct drm_device *dev = obj->base.dev;
66 struct drm_i915_private *dev_priv = dev->dev_private;
67 int ret;
68
69 if (dev_priv->mm.gtt->needs_dmar) {
70 ret = intel_gtt_map_memory(obj->pages,
71 obj->base.size >> PAGE_SHIFT,
72 &obj->sg_list,
73 &obj->num_sg);
74 if (ret != 0)
75 return ret;
76
77 intel_gtt_insert_sg_entries(obj->sg_list,
78 obj->num_sg,
79 obj->gtt_space->start >> PAGE_SHIFT,
80 obj->agp_type);
81 } else
82 intel_gtt_insert_pages(obj->gtt_space->start >> PAGE_SHIFT,
83 obj->base.size >> PAGE_SHIFT,
84 obj->pages,
85 obj->agp_type);
86
87 return 0;
88 }
89
i915_gem_gtt_unbind_object(struct drm_i915_gem_object * obj)90 void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj)
91 {
92 intel_gtt_clear_range(obj->gtt_space->start >> PAGE_SHIFT,
93 obj->base.size >> PAGE_SHIFT);
94
95 if (obj->sg_list) {
96 intel_gtt_unmap_memory(obj->sg_list, obj->num_sg);
97 obj->sg_list = NULL;
98 }
99 }
100