{
struct drm_i915_private *dev_priv = dev->dev_private;
struct pci_dev *pdev = dev_priv->bridge_dev;
+ struct resource *r;
u32 base;
/* On the machines I have tested the Graphics Base of Stolen Memory
#endif
}
+ if (base == 0)
+ return 0;
+
+ /* Verify that nothing else uses this physical address. Stolen
+ * memory should be reserved by the BIOS and hidden from the
+ * kernel. So if the region is already marked as busy, something
+ * is seriously wrong.
+ */
+ r = devm_request_mem_region(dev->dev, base, dev_priv->gtt.stolen_size,
+ "Graphics Stolen Memory");
+ if (r == NULL) {
+ DRM_ERROR("conflict detected with stolen region: [0x%08x - 0x%08x]\n",
+ base, base + (uint32_t)dev_priv->gtt.stolen_size);
+ base = 0;
+ }
+
return base;
}
if (!compressed_llb)
goto err_fb;
- dev_priv->compressed_llb = compressed_llb;
+ dev_priv->fbc.compressed_llb = compressed_llb;
I915_WRITE(FBC_CFB_BASE,
dev_priv->mm.stolen_base + compressed_fb->start);
dev_priv->mm.stolen_base + compressed_llb->start);
}
- dev_priv->compressed_fb = compressed_fb;
- dev_priv->cfb_size = size;
+ dev_priv->fbc.compressed_fb = compressed_fb;
+ dev_priv->fbc.size = size;
DRM_DEBUG_KMS("reserved %d bytes of contiguous stolen space for FBC\n",
size);
if (!drm_mm_initialized(&dev_priv->mm.stolen))
return -ENODEV;
- if (size < dev_priv->cfb_size)
+ if (size < dev_priv->fbc.size)
return 0;
/* Release any current block */
{
struct drm_i915_private *dev_priv = dev->dev_private;
- if (dev_priv->cfb_size == 0)
+ if (dev_priv->fbc.size == 0)
return;
- if (dev_priv->compressed_fb)
- drm_mm_put_block(dev_priv->compressed_fb);
+ if (dev_priv->fbc.compressed_fb)
+ drm_mm_put_block(dev_priv->fbc.compressed_fb);
- if (dev_priv->compressed_llb)
- drm_mm_put_block(dev_priv->compressed_llb);
+ if (dev_priv->fbc.compressed_llb)
+ drm_mm_put_block(dev_priv->fbc.compressed_llb);
- dev_priv->cfb_size = 0;
+ dev_priv->fbc.size = 0;
}
void i915_gem_cleanup_stolen(struct drm_device *dev)
if (IS_VALLEYVIEW(dev))
bios_reserved = 1024*1024; /* top 1M on VLV/BYT */
+ if (WARN_ON(bios_reserved > dev_priv->gtt.stolen_size))
+ return 0;
+
/* Basic memrange allocator for stolen space */
drm_mm_init(&dev_priv->mm.stolen, 0, dev_priv->gtt.stolen_size -
bios_reserved);
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj;
struct drm_mm_node *stolen;
+ int ret;
if (!drm_mm_initialized(&dev_priv->mm.stolen))
return NULL;
if (WARN_ON(size == 0))
return NULL;
- stolen = drm_mm_create_block(&dev_priv->mm.stolen,
- stolen_offset, size,
- false);
- if (stolen == NULL) {
+ stolen = kzalloc(sizeof(*stolen), GFP_KERNEL);
+ if (!stolen)
+ return NULL;
+
+ stolen->start = stolen_offset;
+ stolen->size = size;
+ ret = drm_mm_reserve_node(&dev_priv->mm.stolen, stolen);
+ if (ret) {
DRM_DEBUG_KMS("failed to allocate stolen space\n");
+ kfree(stolen);
return NULL;
}
}
/* Some objects just need physical mem from stolen space */
- if (gtt_offset == -1)
+ if (gtt_offset == I915_GTT_OFFSET_NONE)
return obj;
/* To simplify the initialisation sequence between KMS and GTT,
* setting up the GTT space. The actual reservation will occur
* later.
*/
+ obj->gtt_space.start = gtt_offset;
+ obj->gtt_space.size = size;
if (drm_mm_initialized(&dev_priv->mm.gtt_space)) {
- obj->gtt_space = drm_mm_create_block(&dev_priv->mm.gtt_space,
- gtt_offset, size,
- false);
- if (obj->gtt_space == NULL) {
+ ret = drm_mm_reserve_node(&dev_priv->mm.gtt_space,
+ &obj->gtt_space);
+ if (ret) {
DRM_DEBUG_KMS("failed to allocate stolen GTT space\n");
- drm_gem_object_unreference(&obj->base);
- return NULL;
+ goto unref_out;
}
- } else
- obj->gtt_space = I915_GTT_RESERVED;
+ }
- obj->gtt_offset = gtt_offset;
obj->has_global_gtt_mapping = 1;
list_add_tail(&obj->global_list, &dev_priv->mm.bound_list);
list_add_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
return obj;
+
+unref_out:
+ drm_gem_object_unreference(&obj->base);
+ return NULL;
}
void