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-rw-r--r--shared-core/i915_init.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/shared-core/i915_init.c b/shared-core/i915_init.c
index 4f2d3a4f..b21351c0 100644
--- a/shared-core/i915_init.c
+++ b/shared-core/i915_init.c
@@ -100,6 +100,32 @@ int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size,
return 0;
}
+static int
+i915_init_hws_phys(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int ret = 0;
+
+ dev_priv->status_page_dmah = drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE,
+ 0xffffffff);
+
+ if (!dev_priv->status_page_dmah) {
+ DRM_ERROR("Can not allocate hardware status page\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+ dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
+ dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
+
+ memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
+
+ I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
+ DRM_DEBUG("hws kernel virt: 0x%p\n", dev_priv->hw_status_page);
+
+out:
+ return ret;
+}
+
static int i915_load_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -113,6 +139,9 @@ static int i915_load_modeset_init(struct drm_device *dev)
/* Let GEM Manage from end of prealloc space to end of aperture */
i915_gem_do_init(dev, prealloc_size, agp_size);
+ if (!I915_NEED_GFX_HWS(dev))
+ i915_init_hws_phys(dev);
+
ret = i915_gem_init_ringbuffer(dev);
if (ret)
goto out;
@@ -354,6 +383,8 @@ int i915_driver_unload(struct drm_device *dev)
mutex_unlock(&dev->struct_mutex);
drm_mm_takedown(&dev_priv->vram);
i915_gem_lastclose(dev);
+ if (!I915_NEED_GFX_HWS(dev))
+ drm_pci_free(dev, dev_priv->status_page_dmah);
}
drm_rmmap(dev, dev_priv->mmio_map);