3 files changed, 34 insertions, 14 deletions

diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index 2b29dbe2..25172c1b 100644
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -85,6 +85,8 @@ int i915_dma_cleanup(drm_device_t * dev)
 	 * may not have been called from userspace and after dev_private
 	 * is freed, it's too late.
 	 */
+	I915_WRITE(LP_RING + RING_LEN, 0);
+
 	if (dev->irq)
 		drm_irq_uninstall(dev);
 
@@ -97,6 +99,16 @@ static int i915_initialize(drm_device_t * dev,
 			   drm_i915_init_t * init)
 {
 
+	/* reset ring pointers */
+	I915_WRITE(LP_RING + RING_LEN, 0);
+	mb();
+
+	memset((void *)(dev_priv->ring.virtual_start), 0, dev_priv->ring.Size);
+
+	I915_WRITE(LP_RING + RING_START, dev_priv->ring.Start);
+	I915_WRITE(LP_RING + RING_LEN, ((dev_priv->ring.Size - 4096) & RING_NR_PAGES) | (RING_NO_REPORT | RING_VALID));
+
+
 	dev_priv->cpp = init->cpp;
 	dev_priv->sarea_priv->pf_current_page = 0;
 
diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h
index f4343014..8c2b4817 100644
--- a/shared-core/i915_drv.h
+++ b/shared-core/i915_drv.h
@@ -93,7 +93,6 @@ typedef struct drm_i915_private {
 	drm_local_map_t *sarea;
 	drm_local_map_t *mmio_map;
 
-	unsigned long baseaddr;
 	unsigned long mmiobase;
 	unsigned long mmiolen;
 
diff --git a/shared-core/i915_init.c b/shared-core/i915_init.c
index 273a1116..2ed7a822 100644
--- a/shared-core/i915_init.c
+++ b/shared-core/i915_init.c
@@ -138,12 +138,12 @@ int i915_driver_load(drm_device_t *dev, unsigned long flags)
 	if (IS_I9XX(dev)) {
 		dev_priv->mmiobase = drm_get_resource_start(dev, 0);
 		dev_priv->mmiolen = drm_get_resource_len(dev, 0);
-		dev->mode_config.fb_base = dev_priv->baseaddr =
+		dev->mode_config.fb_base =
 			drm_get_resource_start(dev, 2) & 0xff000000;
 	} else if (drm_get_resource_start(dev, 1)) {
 		dev_priv->mmiobase = drm_get_resource_start(dev, 1);
 		dev_priv->mmiolen = drm_get_resource_len(dev, 1);
-		dev->mode_config.fb_base = dev_priv->baseaddr =
+		dev->mode_config.fb_base =
 			drm_get_resource_start(dev, 0) & 0xff000000;
 	} else {
 		DRM_ERROR("Unable to find MMIO registers\n");
@@ -178,14 +178,18 @@ int i915_driver_load(drm_device_t *dev, unsigned long flags)
 
 	i915_probe_agp(dev->pdev, &agp_size, &prealloc_size);
 	DRM_DEBUG("setting up %d bytes of PRIV0 space\n", prealloc_size);
-	drm_bo_init_mm(dev, DRM_BO_MEM_PRIV0, dev_priv->baseaddr,
+	drm_bo_init_mm(dev, DRM_BO_MEM_PRIV0, 0,
 		       prealloc_size >> PAGE_SHIFT);
 
+	I915_WRITE(LP_RING + RING_LEN, 0);
+	I915_WRITE(LP_RING + RING_HEAD, 0);
+	I915_WRITE(LP_RING + RING_TAIL, 0);
+
 	size = PRIMARY_RINGBUFFER_SIZE;
 	ret = drm_buffer_object_create(dev, size, drm_bo_type_kernel,
 				       DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE |
 				       DRM_BO_FLAG_MEM_PRIV0 |
-				       DRM_BO_FLAG_NO_MOVE,
+				       DRM_BO_FLAG_NO_EVICT,
 				       DRM_BO_HINT_DONT_FENCE, 0x1, 0,
 				       &dev_priv->ring_buffer);
 	if (ret < 0) {
@@ -194,23 +198,17 @@ int i915_driver_load(drm_device_t *dev, unsigned long flags)
 	}
 
 	/* remap the buffer object properly */
-	dev_priv->ring.Start = dev_priv->ring_buffer->offset + dev_priv->baseaddr;
+	dev_priv->ring.Start = dev_priv->ring_buffer->offset;
 	dev_priv->ring.End = dev_priv->ring.Start + size;
 	dev_priv->ring.Size = size;
 	dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
 
-
 	ret = drm_mem_reg_ioremap(dev, &dev_priv->ring_buffer->mem,
 				  &dev_priv->ring.virtual_start);
 	if (ret)
 		DRM_ERROR("error mapping ring buffer: %d\n", ret);
 
 	DRM_DEBUG("ring start %08X, %08X, %08X\n", dev_priv->ring.Start, dev_priv->ring.virtual_start, dev_priv->ring.Size);
-	I915_WRITE(LP_RING + RING_HEAD, 0);
-	I915_WRITE(LP_RING + RING_TAIL, 0);
-	I915_WRITE(LP_RING + RING_START, dev_priv->ring.Start);
-	I915_WRITE(LP_RING + RING_LEN, ((dev_priv->ring.Size - 4096) & RING_NR_PAGES) |
-		   (RING_NO_REPORT | RING_VALID));
 
 	dev_priv->sarea_priv->pf_current_page = 0;
 
@@ -294,11 +292,22 @@ int i915_driver_unload(drm_device_t *dev)
 
 	I915_WRITE(LP_RING + RING_LEN, 0);
 
-	iounmap(dev_priv->ring.virtual_start);
+	intel_modeset_cleanup(dev);
+
+	drm_mem_reg_iounmap(dev, &dev_priv->ring_buffer->mem,
+			    dev_priv->ring.virtual_start);
+
+	mutex_lock(&dev->struct_mutex);
+	drm_bo_usage_deref_locked(dev_priv->ring_buffer);
+	mutex_unlock(&dev->struct_mutex);
+
+	if (drm_bo_clean_mm(dev, DRM_BO_MEM_PRIV0)) {
+		DRM_ERROR("Memory manager type 3 not clean. "
+			  "Delaying takedown\n");
+	}
 
 	drm_bo_driver_finish(dev);
 
-	intel_modeset_cleanup(dev);
         DRM_DEBUG("%p, %p\n", dev_priv->mmio_map, dev_priv->sarea);
         drm_rmmap(dev, dev_priv->mmio_map);
         drm_rmmap(dev, dev_priv->sarea);