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path: root/drivers/gpu/drm/i915/i915_dma.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
-rw-r--r--drivers/gpu/drm/i915/i915_dma.c60
1 files changed, 50 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index ee64b7301f67..6d21b9e48b89 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -202,7 +202,7 @@ static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
dev_priv->ring.map.flags = 0;
dev_priv->ring.map.mtrr = 0;
- drm_core_ioremap(&dev_priv->ring.map, dev);
+ drm_core_ioremap_wc(&dev_priv->ring.map, dev);
if (dev_priv->ring.map.handle == NULL) {
i915_dma_cleanup(dev);
@@ -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;
}
@@ -801,7 +811,7 @@ static int i915_set_status_page(struct drm_device *dev, void *data,
dev_priv->hws_map.flags = 0;
dev_priv->hws_map.mtrr = 0;
- drm_core_ioremap(&dev_priv->hws_map, dev);
+ drm_core_ioremap_wc(&dev_priv->hws_map, dev);
if (dev_priv->hws_map.handle == NULL) {
i915_dma_cleanup(dev);
dev_priv->status_gfx_addr = 0;
@@ -966,10 +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;
@@ -1081,6 +1087,28 @@ 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);
+ if (dev_priv->mm.gtt_mapping == NULL) {
+ ret = -EIO;
+ goto out_rmmap;
+ }
+
+ /* 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. 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;
@@ -1089,13 +1117,17 @@ 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 */
if (!I915_NEED_GFX_HWS(dev)) {
ret = i915_init_phys_hws(dev);
if (ret != 0)
- goto out_rmmap;
+ goto out_iomapfree;
}
/* On the 945G/GM, the chipset reports the MSI capability on the
@@ -1134,6 +1166,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
return 0;
+out_iomapfree:
+ io_mapping_free(dev_priv->mm.gtt_mapping);
out_rmmap:
iounmap(dev_priv->regs);
free_priv:
@@ -1145,8 +1179,14 @@ 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);
}