Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

[safe/jmp/linux-2.6] / drivers / gpu / drm / i915 / i915_dma.c

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 57e8eb6..81f1cff 100644 (file)
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -731,8 +731,11 @@ static int i915_getparam(struct drm_device *dev, void *data,
        case I915_PARAM_HAS_GEM:
                value = dev_priv->has_gem;
                break;
+       case I915_PARAM_NUM_FENCES_AVAIL:
+               value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
+               break;
        default:
-               DRM_ERROR("Unknown parameter %d\n", param->param);
+               DRM_DEBUG("Unknown parameter %d\n", param->param);
                return -EINVAL;
        }
 
@@ -764,8 +767,15 @@ static int i915_setparam(struct drm_device *dev, void *data,
        case I915_SETPARAM_ALLOW_BATCHBUFFER:
                dev_priv->allow_batchbuffer = param->value;
                break;
+       case I915_SETPARAM_NUM_USED_FENCES:
+               if (param->value > dev_priv->num_fence_regs ||
+                   param->value < 0)
+                       return -EINVAL;
+               /* Userspace can use first N regs */
+               dev_priv->fence_reg_start = param->value;
+               break;
        default:
-               DRM_ERROR("unknown parameter %d\n", param->param);
+               DRM_DEBUG("unknown parameter %d\n", param->param);
                return -EINVAL;
        }
 
@@ -944,11 +954,14 @@ static int i915_load_modeset_init(struct drm_device *dev)
        dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
                0xff000000;
 
-       if (IS_MOBILE(dev) || (IS_I9XX(dev) && !IS_I965G(dev) && !IS_G33(dev)))
+       if (IS_MOBILE(dev) || IS_I9XX(dev))
                dev_priv->cursor_needs_physical = true;
        else
                dev_priv->cursor_needs_physical = false;
 
+       if (IS_I965G(dev) || IS_G33(dev))
+               dev_priv->cursor_needs_physical = false;
+
        ret = i915_probe_agp(dev, &agp_size, &prealloc_size);
        if (ret)
                goto kfree_devname;
@@ -963,10 +976,6 @@ static int i915_load_modeset_init(struct drm_device *dev)
        if (ret)
                goto kfree_devname;
 
-        dev_priv->mm.gtt_mapping =
-               io_mapping_create_wc(dev->agp->base,
-                                    dev->agp->agp_info.aper_size * 1024*1024);
-
        /* Allow hardware batchbuffers unless told otherwise.
         */
        dev_priv->allow_batchbuffer = 1;
@@ -1078,6 +1087,23 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
                goto free_priv;
        }
 
+        dev_priv->mm.gtt_mapping =
+               io_mapping_create_wc(dev->agp->base,
+                                    dev->agp->agp_info.aper_size * 1024*1024);
+       /* Set up a WC MTRR for non-PAT systems.  This is more common than
+        * one would think, because the kernel disables PAT on first
+        * generation Core chips because WC PAT gets overridden by a UC
+        * MTRR if present.  Even if a UC MTRR isn't present.
+        */
+       dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
+                                        dev->agp->agp_info.aper_size *
+                                        1024 * 1024,
+                                        MTRR_TYPE_WRCOMB, 1);
+       if (dev_priv->mm.gtt_mtrr < 0) {
+               DRM_INFO("MTRR allocation failed\n.  Graphics "
+                        "performance may suffer.\n");
+       }
+
 #ifdef CONFIG_HIGHMEM64G
        /* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */
        dev_priv->has_gem = 0;
@@ -1086,6 +1112,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
        dev_priv->has_gem = 1;
 #endif
 
+       dev->driver->get_vblank_counter = i915_get_vblank_counter;
+       if (IS_GM45(dev))
+               dev->driver->get_vblank_counter = gm45_get_vblank_counter;
+
        i915_gem_load(dev);
 
        /* Init HWS */
@@ -1142,8 +1172,14 @@ int i915_driver_unload(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
+       io_mapping_free(dev_priv->mm.gtt_mapping);
+       if (dev_priv->mm.gtt_mtrr >= 0) {
+               mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
+                        dev->agp->agp_info.aper_size * 1024 * 1024);
+               dev_priv->mm.gtt_mtrr = -1;
+       }
+
        if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-               io_mapping_free(dev_priv->mm.gtt_mapping);
                drm_irq_uninstall(dev);
        }