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 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 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 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