[Intel-gfx] [RFC PATCH v4 2/4] drm/ipvr: drm driver for VED

Sean V Kelley seanvk at posteo.de
Wed Jan 7 16:35:18 PST 2015


From: Yao Cheng <yao.cheng at intel.com>

Probes VED and creates a new drm device for hardware accelerated
video decoding.
Currently support VP8 decoding on valleyview.

v2:
take David's comments
	- add mmap support and remove mmap_ioctl
	- remove postclose since it's deprecated
	- NULL set_busid

v3:
take David, Daniel and Jesse's comments and massive refine
	- use drm_dev_alloc+drm_dev_register to replace drm_platform_init
	- same as above in exit side
	- remove fd based explit fence
	- refine ipvr_drm.h, use __u32 series and refine paddings
	- add doc to describe ipvr/ved terminology
	- ioctl refine: remove unused code
	- use uintptr_t series for address/number conversion
	- runtime pm refine: guarantee get/put paring
	- add PRIME feature and remove USERPTR ioctl
	- implement relocation fixup in EXEC ioctl
	- call drm_gem_get_pages to replace my own implementation
	- code cleanup: remove unused code

v4:
bug fixing,
	- add missing unreference in ipvr_gem_fault()
	- add struct_mutex lock around drm_mm_insert_node_in_range_generic()
	- move ipvr_ctx_list from dev_priv to file_priv and add spinlock
	- check EAGAIN for pm_runtime_get/put and add lock
	- add mutex lock for do_execbuffer
	- put power on fence lockup
	- define all ioctls as DRM_AUTH|DRM_UNLOCKED
	- correctly set ved_busy
	- rename ipvr_misc_ioctl to ipvr_get_info_ioctl and remove unused code

Signed-off-by: Yao Cheng <yao.cheng at intel.com>
Signed-off-by: Sean V Kelley <seanvk at posteo.de>
---
 Documentation/DocBook/drm.tmpl    |   39 ++
 drivers/gpu/drm/Kconfig           |    2 +
 drivers/gpu/drm/Makefile          |    1 +
 drivers/gpu/drm/ipvr/Kconfig      |    9 +
 drivers/gpu/drm/ipvr/Makefile     |   18 +
 drivers/gpu/drm/ipvr/ipvr_bo.c    |  543 +++++++++++++++++
 drivers/gpu/drm/ipvr/ipvr_bo.h    |   80 +++
 drivers/gpu/drm/ipvr/ipvr_debug.c |  335 +++++++++++
 drivers/gpu/drm/ipvr/ipvr_debug.h |   76 +++
 drivers/gpu/drm/ipvr/ipvr_drm.h   |  259 ++++++++
 drivers/gpu/drm/ipvr/ipvr_drv.c   |  617 +++++++++++++++++++
 drivers/gpu/drm/ipvr/ipvr_drv.h   |  292 +++++++++
 drivers/gpu/drm/ipvr/ipvr_exec.c  |  613 +++++++++++++++++++
 drivers/gpu/drm/ipvr/ipvr_exec.h  |   57 ++
 drivers/gpu/drm/ipvr/ipvr_fence.c |  487 +++++++++++++++
 drivers/gpu/drm/ipvr/ipvr_fence.h |   72 +++
 drivers/gpu/drm/ipvr/ipvr_gem.c   |  297 +++++++++
 drivers/gpu/drm/ipvr/ipvr_gem.h   |   48 ++
 drivers/gpu/drm/ipvr/ipvr_mmu.c   |  752 +++++++++++++++++++++++
 drivers/gpu/drm/ipvr/ipvr_mmu.h   |  111 ++++
 drivers/gpu/drm/ipvr/ipvr_trace.c |   11 +
 drivers/gpu/drm/ipvr/ipvr_trace.h |  333 ++++++++++
 drivers/gpu/drm/ipvr/ved_cmd.c    |  882 +++++++++++++++++++++++++++
 drivers/gpu/drm/ipvr/ved_cmd.h    |   70 +++
 drivers/gpu/drm/ipvr/ved_fw.c     | 1199 +++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/ipvr/ved_fw.h     |   81 +++
 drivers/gpu/drm/ipvr/ved_msg.h    |  256 ++++++++
 drivers/gpu/drm/ipvr/ved_pm.c     |  335 +++++++++++
 drivers/gpu/drm/ipvr/ved_pm.h     |   36 ++
 drivers/gpu/drm/ipvr/ved_reg.h    |  561 +++++++++++++++++
 30 files changed, 8472 insertions(+)
 create mode 100644 drivers/gpu/drm/ipvr/Kconfig
 create mode 100644 drivers/gpu/drm/ipvr/Makefile
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_bo.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_bo.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_debug.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_debug.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_drm.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_drv.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_drv.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_exec.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_exec.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_fence.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_fence.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_gem.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_gem.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_mmu.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_mmu.h
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_trace.c
 create mode 100644 drivers/gpu/drm/ipvr/ipvr_trace.h
 create mode 100644 drivers/gpu/drm/ipvr/ved_cmd.c
 create mode 100644 drivers/gpu/drm/ipvr/ved_cmd.h
 create mode 100644 drivers/gpu/drm/ipvr/ved_fw.c
 create mode 100644 drivers/gpu/drm/ipvr/ved_fw.h
 create mode 100644 drivers/gpu/drm/ipvr/ved_msg.h
 create mode 100644 drivers/gpu/drm/ipvr/ved_pm.c
 create mode 100644 drivers/gpu/drm/ipvr/ved_pm.h
 create mode 100644 drivers/gpu/drm/ipvr/ved_reg.h

diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 9db989c..e9cadf6 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -4062,5 +4062,44 @@ int num_ioctls;</synopsis>
 
   </chapter>
 !Cdrivers/gpu/drm/i915/i915_irq.c
+  <chapter id="drmIpvr">
+    <title>drm/ipvr Intel's driver for PowerVR video core</title>
+    <para>
+      The drm/ipvr driver intends to support the PowerVR video cores
+	  integrated on Intel's platforms. The video cores can be categorized
+	  into 3 types:
+        <variablelist>
+          <varlistentry>
+            <term>VED</term>
+            <listitem>
+              <para>
+                multi-format video decoder, various video codecs are supported,
+				e.g. H.264, VP8, etc..
+              </para>
+            </listitem>
+          </varlistentry>
+          <varlistentry>
+            <term>VEC</term>
+            <listitem>
+              <para>
+                multi-format video encoder, various video codecs support like
+				VED.
+              </para>
+            </listitem>
+          </varlistentry>
+          <varlistentry>
+            <term>VSP</term>
+            <listitem>
+              <para>
+		        multi-function video processing. supports various features such
+				as color-space-conversion, sharpening, deblocking, etc..
+              </para>
+            </listitem>
+          </varlistentry>
+        </variablelist>
+	  Now ipvr only supports VED on Valleyview platform. The names "VEC"
+	  and "VSP" are reserved for possible future support.
+    </para>
+  </chapter>
 </part>
 </book>
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 24c2d7c..c79b813 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -165,6 +165,8 @@ config DRM_SAVAGE
 	  Choose this option if you have a Savage3D/4/SuperSavage/Pro/Twister
 	  chipset. If M is selected the module will be called savage.
 
+source "drivers/gpu/drm/ipvr/Kconfig"
+
 source "drivers/gpu/drm/exynos/Kconfig"
 
 source "drivers/gpu/drm/vmwgfx/Kconfig"
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 47d8986..d364ea2 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -41,6 +41,7 @@ obj-$(CONFIG_DRM_RADEON)+= radeon/
 obj-$(CONFIG_DRM_MGA)	+= mga/
 obj-$(CONFIG_DRM_I810)	+= i810/
 obj-$(CONFIG_DRM_I915)  += i915/
+obj-$(CONFIG_DRM_IPVR)  += ipvr/
 obj-$(CONFIG_DRM_MGAG200) += mgag200/
 obj-$(CONFIG_DRM_CIRRUS_QEMU) += cirrus/
 obj-$(CONFIG_DRM_SIS)   += sis/
diff --git a/drivers/gpu/drm/ipvr/Kconfig b/drivers/gpu/drm/ipvr/Kconfig
new file mode 100644
index 0000000..869bad4
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/Kconfig
@@ -0,0 +1,9 @@
+config DRM_IPVR
+       tristate "IPVR video decode driver"
+       depends on DRM
+       select SHMEM
+       select TMPFS
+       default m
+       help
+         Choose this option if you want to enable accelerated video decode with VED hardware.
+		 Currently support VP8 decoding on valleyview.
diff --git a/drivers/gpu/drm/ipvr/Makefile b/drivers/gpu/drm/ipvr/Makefile
new file mode 100644
index 0000000..280647e
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/Makefile
@@ -0,0 +1,18 @@
+ccflags-y := -Iinclude/drm
+
+ipvr-y := \
+        ipvr_drv.o \
+        ipvr_bo.o \
+        ipvr_exec.o \
+        ipvr_fence.o \
+        ipvr_gem.o \
+        ipvr_mmu.o \
+        ipvr_debug.o \
+        ipvr_trace.o \
+        ved_pm.o \
+        ved_cmd.o \
+        ved_fw.o
+
+obj-$(CONFIG_DRM_IPVR) += ipvr.o
+
+CFLAGS_ipvr_trace.o := -I$(src)
diff --git a/drivers/gpu/drm/ipvr/ipvr_bo.c b/drivers/gpu/drm/ipvr/ipvr_bo.c
new file mode 100644
index 0000000..5fccf7e
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_bo.c
@@ -0,0 +1,543 @@
+/**************************************************************************
+ * ipvr_bo.c: IPVR buffer creation/destory, import/export, map etc
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_bo.h"
+#include "ipvr_trace.h"
+#include "ipvr_debug.h"
+#include <drmP.h>
+#include <linux/dma-buf.h>
+
+static inline bool cpu_cache_is_coherent(enum ipvr_cache_level level)
+{
+	/* on valleyview no cache snooping */
+	return (level != IPVR_CACHE_WRITEBACK);
+}
+
+static inline bool clflush_object(struct drm_ipvr_gem_object *obj, bool force)
+{
+	if (obj->sg_table == NULL)
+		return false;
+
+	/* no need to flush if cache is coherent */
+	if (!force && cpu_cache_is_coherent(obj->cache_level))
+		return false;
+
+	drm_clflush_sg(obj->sg_table);
+
+	return true;
+}
+
+static void
+ipvr_object_free(struct drm_ipvr_gem_object *obj)
+{
+	struct drm_ipvr_private *dev_priv = obj->base.dev->dev_private;
+	kmem_cache_free(dev_priv->ipvr_bo_slab, obj);
+}
+
+static struct drm_ipvr_gem_object *
+ipvr_object_alloc(struct drm_ipvr_private *dev_priv, size_t size)
+{
+	struct drm_ipvr_gem_object *obj;
+
+	obj = kmem_cache_alloc(dev_priv->ipvr_bo_slab, GFP_KERNEL | __GFP_ZERO);
+	if (obj == NULL)
+		return NULL;
+	memset(obj, 0, sizeof(*obj));
+
+	return obj;
+}
+
+static int ipvr_gem_mmu_bind_object(struct drm_ipvr_gem_object *obj)
+{
+	struct drm_ipvr_private *dev_priv = obj->base.dev->dev_private;
+	const unsigned long entry = ipvr_gem_object_mmu_offset(obj);
+
+	if (IPVR_IS_ERR(entry)) {
+		return IPVR_OFFSET_ERR(entry);
+	}
+
+	IPVR_DEBUG_GENERAL("entry is 0x%lx, size is %zu, nents is %d.\n",
+			entry, obj->base.size, obj->sg_table->nents);
+
+	return ipvr_mmu_insert_pages(dev_priv->mmu->default_pd,
+		obj->pages, entry, obj->base.size >> PAGE_SHIFT,
+		0, 0, 0);
+}
+
+static void ipvr_gem_mmu_unbind_object(struct drm_ipvr_gem_object *obj)
+{
+	struct drm_ipvr_private *dev_priv = obj->base.dev->dev_private;
+	const unsigned long entry = ipvr_gem_object_mmu_offset(obj);
+	IPVR_DEBUG_GENERAL("entry is 0x%lx, size is %zu.\n",
+			entry, obj->base.size);
+	ipvr_mmu_remove_pages(dev_priv->mmu->default_pd,
+		entry, obj->base.size >> PAGE_SHIFT, 0, 0);
+}
+
+static void ipvr_gem_object_pin_pages(struct drm_ipvr_gem_object *obj)
+{
+	BUG_ON(obj->sg_table == NULL);
+	obj->pages_pin_count++;
+}
+
+static void ipvr_gem_object_unpin_pages(struct drm_ipvr_gem_object *obj)
+{
+	BUG_ON(obj->pages_pin_count == 0);
+	obj->pages_pin_count--;
+}
+
+static int ipvr_gem_bind_to_drm_mm(struct drm_ipvr_gem_object* obj,
+			struct ipvr_address_space *vm)
+{
+	int ret = 0;
+	struct drm_mm *mm;
+	unsigned long start, end;
+	/* bind to VPU address space */
+	if (obj->tiling) {
+		mm = &vm->tiling_mm;
+		start = vm->tiling_start;
+		end = vm->tiling_start + vm->tiling_total;
+	} else {
+		mm = &vm->linear_mm;
+		start = vm->linear_start;
+		end = vm->linear_start + vm->linear_total;
+	}
+	IPVR_DEBUG_GENERAL("call drm_mm_insert_node_in_range_generic.\n");
+	ret = mutex_lock_interruptible(&obj->base.dev->struct_mutex);
+	if (ret)
+		return ret;
+	ret = drm_mm_insert_node_in_range_generic(mm, &obj->mm_node, obj->base.size,
+						PAGE_SIZE, obj->cache_level,
+						start, end,
+						DRM_MM_SEARCH_DEFAULT,
+						DRM_MM_CREATE_DEFAULT);
+	if (ret) {
+		/* no shrinker implemented yet so simply return error */
+		IPVR_ERROR("failed on drm_mm_insert_node_in_range_generic: %d\n", ret);
+		goto out;
+	}
+
+	IPVR_DEBUG_GENERAL("drm_mm_insert_node_in_range_generic success: "
+		"start=0x%lx, size=%lu, color=%lu.\n",
+		obj->mm_node.start, obj->mm_node.size, obj->mm_node.color);
+
+out:
+	mutex_unlock(&obj->base.dev->struct_mutex);
+
+	return ret;
+}
+
+struct drm_ipvr_gem_object* ipvr_gem_create(struct drm_ipvr_private *dev_priv,
+			size_t size, u32 tiling, u32 cache_level)
+{
+	struct drm_ipvr_gem_object *obj;
+	int ret = 0;
+	int npages;
+	struct address_space *mapping;
+	gfp_t mask;
+
+	BUG_ON(size & (PAGE_SIZE - 1));
+	npages = size >> PAGE_SHIFT;
+	IPVR_DEBUG_GENERAL("create bo size is %zu, tiling is %u, "
+			"cache level is %u.\n",	size, tiling, cache_level);
+
+	/* Allocate the new object */
+	obj = ipvr_object_alloc(dev_priv, size);
+	if (!obj)
+		return ERR_PTR(-ENOMEM);
+
+	/* initialization */
+	ret = drm_gem_object_init(dev_priv->dev, &obj->base, size);
+	if (ret) {
+		IPVR_ERROR("failed on drm_gem_object_init: %d\n", ret);
+		goto err_free_obj;
+	}
+	init_waitqueue_head(&obj->event_queue);
+	/* todo: need set correct mask */
+	mask = GFP_HIGHUSER | __GFP_RECLAIMABLE;
+
+	/* ipvr cannot relocate objects above 4GiB. */
+	mask &= ~__GFP_HIGHMEM;
+	mask |= __GFP_DMA32;
+
+	mapping = file_inode(obj->base.filp)->i_mapping;
+	mapping_set_gfp_mask(mapping, mask);
+
+	obj->base.write_domain = IPVR_GEM_DOMAIN_CPU;
+	obj->base.read_domains = IPVR_GEM_DOMAIN_CPU;
+	obj->drv_name = "ipvr";
+	obj->fence = NULL;
+	obj->tiling = tiling;
+	obj->cache_level = cache_level;
+
+	/* get physical pages */
+	obj->pages = drm_gem_get_pages(&obj->base);
+	if (IS_ERR(obj->pages)) {
+		ret = PTR_ERR(obj->pages);
+		IPVR_ERROR("failed on drm_gem_get_pages: %d\n", ret);
+		goto err_free_obj;
+	}
+
+	obj->sg_table = drm_prime_pages_to_sg(obj->pages, obj->base.size >> PAGE_SHIFT);
+	if (IS_ERR(obj->sg_table)) {
+		ret = PTR_ERR(obj->sg_table);
+		IPVR_ERROR("failed on drm_gem_get_pages: %d\n", ret);
+		goto err_put_pages;
+	}
+
+	/* set cacheability */
+	switch (obj->cache_level) {
+	case IPVR_CACHE_UNCACHED:
+		ret = set_pages_array_uc(obj->pages, npages);
+		break;
+	case IPVR_CACHE_WRITECOMBINE:
+		ret = set_pages_array_wc(obj->pages, npages);
+		break;
+	case IPVR_CACHE_WRITEBACK:
+		ret = set_pages_array_wb(obj->pages, npages);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+	if (ret) {
+		IPVR_DEBUG_WARN("failed to set page cache: %d.\n", ret);
+		goto err_put_sg;
+	}
+
+	ipvr_gem_object_pin_pages(obj);
+
+	/* bind to VPU address space */
+	ret = ipvr_gem_bind_to_drm_mm(obj, &dev_priv->addr_space);
+	if (ret) {
+		IPVR_ERROR("failed to call ipvr_gem_bind_to_drm_mm: %d.\n", ret);
+		goto err_put_sg;
+	}
+
+	ret = ipvr_gem_mmu_bind_object(obj);
+	if (ret) {
+		IPVR_ERROR("failed to call ipvr_gem_mmu_bind_object: %d.\n", ret);
+		goto err_remove_node;
+	}
+
+	ipvr_stat_add_object(dev_priv, obj);
+	trace_ipvr_create_object(obj, ipvr_gem_object_mmu_offset(obj));
+	return obj;
+err_remove_node:
+	drm_mm_remove_node(&obj->mm_node);
+err_put_sg:
+	sg_free_table(obj->sg_table);
+	kfree(obj->sg_table);
+err_put_pages:
+	drm_gem_put_pages(&obj->base, obj->pages, false, false);
+err_free_obj:
+	ipvr_object_free(obj);
+	return ERR_PTR(ret);
+}
+
+void *ipvr_gem_object_vmap(struct drm_ipvr_gem_object *obj)
+{
+	pgprot_t pg = PAGE_KERNEL;
+	switch (obj->cache_level) {
+	case IPVR_CACHE_WRITECOMBINE:
+		pg = pgprot_writecombine(pg);
+		break;
+	case IPVR_CACHE_UNCACHED:
+		pg = pgprot_noncached(pg);
+		break;
+	default:
+		break;
+	}
+	return vmap(obj->pages, obj->base.size >> PAGE_SHIFT, VM_MAP, pg);
+}
+
+/*
+ * When the last reference to a GEM object is released the GEM core calls the
+ * drm_driver .gem_free_object() operation. That operation is mandatory for
+ * GEM-enabled drivers and must free the GEM object and all associated
+ * resources.
+ * called with struct_mutex locked.
+ */
+void ipvr_gem_free_object(struct drm_gem_object *gem_obj)
+{
+	struct drm_device *dev = gem_obj->dev;
+	struct drm_ipvr_gem_object *obj = to_ipvr_bo(gem_obj);
+	drm_ipvr_private_t *dev_priv = dev->dev_private;
+	int ret;
+	unsigned long mmu_offset;
+	int npages = gem_obj->size >> PAGE_SHIFT;
+
+	/* fixme: consider unlocked case */
+	WARN_ON(!mutex_is_locked(&dev->struct_mutex));
+
+	mmu_offset = ipvr_gem_object_mmu_offset(obj);
+	ipvr_gem_mmu_unbind_object(obj);
+
+	if (unlikely(obj->fence)) {
+		ret = ipvr_fence_wait(obj->fence, true, false);
+		if (ret)
+			IPVR_DEBUG_WARN("Failed to wait fence signaled: %d.\n", ret);
+	}
+
+	drm_mm_remove_node(&obj->mm_node);
+	ipvr_gem_object_unpin_pages(obj);
+
+	if (WARN_ON(obj->pages_pin_count))
+		obj->pages_pin_count = 0;
+
+	BUG_ON(!obj->pages || !obj->sg_table);
+	/* set back to page_wb */
+	set_pages_array_wb(obj->pages, npages);
+	if (obj->base.import_attach) {
+		IPVR_DEBUG_GENERAL("free imported object (mmu_offset 0x%lx)\n", mmu_offset);
+		drm_prime_gem_destroy(&obj->base, obj->sg_table);
+		drm_free_large(obj->pages);
+		ipvr_stat_remove_imported(dev_priv, obj);
+	}
+	else {
+		IPVR_DEBUG_GENERAL("free object (mmu_offset 0x%lx)\n", mmu_offset);
+		sg_free_table(obj->sg_table);
+		kfree(obj->sg_table);
+		drm_gem_put_pages(&obj->base, obj->pages, obj->dirty, true);
+		ipvr_stat_remove_object(dev_priv, obj);
+	}
+
+	/* mmap offset is freed by drm_gem_object_release */
+	drm_gem_object_release(&obj->base);
+
+	trace_ipvr_free_object(obj);
+
+	ipvr_object_free(obj);
+}
+
+static inline struct page *get_object_page(struct drm_ipvr_gem_object *obj, int n)
+{
+	struct sg_page_iter sg_iter;
+
+	for_each_sg_page(obj->sg_table->sgl, &sg_iter, obj->sg_table->nents, n)
+		return sg_page_iter_page(&sg_iter);
+
+	return NULL;
+}
+
+int ipvr_gem_object_apply_reloc(struct drm_ipvr_gem_object *obj,
+				u64 offset_in_bo, u32 value)
+{
+	u64 page_offset = offset_in_page(offset_in_bo);
+	char *vaddr;
+	struct page *target_page;
+
+	/* set to cpu domain */
+	target_page = get_object_page(obj,	offset_in_bo >> PAGE_SHIFT);
+	if (!target_page)
+		return -EINVAL;
+
+	/**
+	 * for efficiency we'd better record the page index,
+	 * and avoid frequent map/unmap on the same page
+	 */
+	vaddr = kmap_atomic(target_page);
+	if (!vaddr)
+		return -ENOMEM;
+	*(u32 *)(vaddr + page_offset) = value;
+
+	kunmap_atomic(vaddr);
+
+	return 0;
+}
+
+int ipvr_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+	struct drm_gem_object *obj = vma->vm_private_data;
+	struct drm_device *dev = obj->dev;
+	unsigned long pfn;
+	pgoff_t pgoff;
+	int ret;
+	struct drm_ipvr_gem_object *ipvr_obj = to_ipvr_bo(obj);
+
+	/* Make sure we don't parallel update on a fault, nor move or remove
+	 * something from beneath our feet
+	 */
+	ret = mutex_lock_interruptible(&dev->struct_mutex);
+	if (ret)
+		goto out;
+
+	if (!ipvr_obj->sg_table) {
+		ret = -ENODATA;
+		goto out_unlock;
+	}
+
+	/* We don't use vmf->pgoff since that has the fake offset: */
+	pgoff = ((unsigned long)vmf->virtual_address -
+			vma->vm_start) >> PAGE_SHIFT;
+
+	pfn = page_to_pfn(ipvr_obj->pages[pgoff]);
+
+	IPVR_DEBUG_GENERAL("Inserting %p pfn %lx, pa %lx\n", vmf->virtual_address,
+			pfn, pfn << PAGE_SHIFT);
+
+	ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn);
+
+out_unlock:
+	mutex_unlock(&dev->struct_mutex);
+out:
+	switch (ret) {
+	case -EAGAIN:
+	case 0:
+	case -ERESTARTSYS:
+	case -EINTR:
+	case -EBUSY:
+		/*
+		 * EBUSY is ok: this just means that another thread
+		 * already did the job.
+		 */
+		return VM_FAULT_NOPAGE;
+	case -ENOMEM:
+		return VM_FAULT_OOM;
+	default:
+		return VM_FAULT_SIGBUS;
+	}
+}
+
+struct sg_table *ipvr_gem_prime_get_sg_table(struct drm_gem_object *obj)
+{
+	struct drm_ipvr_gem_object *ipvr_obj = to_ipvr_bo(obj);
+	struct sg_table *sgt = NULL;
+	int ret;
+
+	if (!ipvr_obj->sg_table) {
+		ret = -ENOENT;
+		goto out;
+	}
+
+	sgt = drm_prime_pages_to_sg(ipvr_obj->pages, obj->size >> PAGE_SHIFT);
+	if (IS_ERR(sgt)) {
+		goto out;
+	}
+
+	IPVR_DEBUG_GENERAL("exported sg_table for obj (mmu_offset 0x%lx)\n",
+		ipvr_gem_object_mmu_offset(ipvr_obj));
+out:
+	return sgt;
+}
+
+struct drm_gem_object *ipvr_gem_prime_import_sg_table(struct drm_device *dev,
+		struct dma_buf_attachment *attach, struct sg_table *sg)
+{
+	struct drm_ipvr_gem_object *obj;
+	int ret = 0;
+	int i, npages;
+	unsigned long pfn;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+
+	if (!sg || !attach || (attach->dmabuf->size & (PAGE_SIZE - 1)))
+		return ERR_PTR(-EINVAL);
+
+	IPVR_DEBUG_ENTRY("enter, size=0x%zx\n", attach->dmabuf->size);
+
+	obj = ipvr_object_alloc(dev_priv, attach->dmabuf->size);
+	if (!obj)
+		return ERR_PTR(-ENOMEM);
+
+	memset(obj, 0, sizeof(*obj));
+
+	drm_gem_private_object_init(dev, &obj->base, attach->dmabuf->size);
+
+	init_waitqueue_head(&obj->event_queue);
+
+	obj->drv_name = "ipvr";
+	obj->fence = NULL;
+	obj->cache_level = IPVR_CACHE_UNCACHED;
+	obj->tiling = 0;
+
+	npages = attach->dmabuf->size >> PAGE_SHIFT;
+
+	obj->sg_table = sg;
+	obj->pages = drm_malloc_ab(npages, sizeof(struct page *));
+	if (!obj->pages) {
+		ret = -ENOMEM;
+		goto err_free_obj;
+	}
+
+	ret = drm_prime_sg_to_page_addr_arrays(sg, obj->pages, NULL, npages);
+	if (ret)
+		goto err_put_pages;
+
+	/* validate sg_table
+	 * should be under 4GiB
+	 */
+	for (i = 0; i < npages; ++i) {
+		pfn = page_to_pfn(obj->pages[i]);
+		if (pfn >= 0x00100000UL) {
+			IPVR_ERROR("cannot support pfn 0x%lx.\n", pfn);
+			ret = -EINVAL; /* what's the better err code? */
+			goto err_put_pages;
+		}
+	}
+
+	ret = ipvr_gem_bind_to_drm_mm(obj, &dev_priv->addr_space);
+	if (ret) {
+		IPVR_ERROR("failed to call ipvr_gem_bind_to_drm_mm: %d.\n", ret);
+		goto err_put_pages;
+	}
+
+	/* do we really have to set the external pages uncached?
+	 * this might causes perf issue in exporter side */
+	ret = set_pages_array_uc(obj->pages, npages);
+	if (ret)
+		IPVR_DEBUG_WARN("failed to set imported pages as uncached: %d, ignore\n", ret);
+
+	ret = ipvr_gem_mmu_bind_object(obj);
+	if (ret) {
+		IPVR_ERROR("failed to call ipvr_gem_mmu_bind_object: %d.\n", ret);
+		goto err_remove_node;
+	}
+	IPVR_DEBUG_GENERAL("imported sg_table, new bo mmu offset=0x%lx.\n",
+		ipvr_gem_object_mmu_offset(obj));
+	ipvr_stat_add_imported(dev_priv, obj);
+	ipvr_gem_object_pin_pages(obj);
+	return &obj->base;
+err_remove_node:
+	drm_mm_remove_node(&obj->mm_node);
+err_put_pages:
+	drm_free_large(obj->pages);
+err_free_obj:
+	ipvr_object_free(obj);
+	return ERR_PTR(ret);
+}
+
+int ipvr_gem_prime_pin(struct drm_gem_object *obj)
+{
+	struct drm_ipvr_private *dev_priv = obj->dev->dev_private;
+	IPVR_DEBUG_ENTRY("mmu offset 0x%lx\n", ipvr_gem_object_mmu_offset(to_ipvr_bo(obj)));
+	ipvr_stat_add_exported(dev_priv, to_ipvr_bo(obj));
+	return 0;
+}
+
+void ipvr_gem_prime_unpin(struct drm_gem_object *obj)
+{
+	struct drm_ipvr_private *dev_priv = obj->dev->dev_private;
+	IPVR_DEBUG_ENTRY("mmu offset 0x%lx\n", ipvr_gem_object_mmu_offset(to_ipvr_bo(obj)));
+	ipvr_stat_remove_exported(dev_priv, to_ipvr_bo(obj));
+}
diff --git a/drivers/gpu/drm/ipvr/ipvr_bo.h b/drivers/gpu/drm/ipvr/ipvr_bo.h
new file mode 100644
index 0000000..4981587
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_bo.h
@@ -0,0 +1,80 @@
+/**************************************************************************
+ * ipvr_bo.h: IPVR buffer creation/destory, import/export, map etc
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+
+#ifndef _IPVR_BO_H_
+#define _IPVR_BO_H_
+
+#include "ipvr_drv.h"
+#include "ipvr_drm.h"
+#include "ipvr_fence.h"
+#include <drmP.h>
+#include <drm_gem.h>
+
+struct ipvr_fence;
+
+struct drm_ipvr_gem_object {
+	struct drm_gem_object base;
+
+	/* used to disinguish between i915 and ipvr */
+	char *drv_name;
+
+	/** MM related */
+	struct drm_mm_node mm_node;
+
+	bool tiling;
+
+	enum ipvr_cache_level cache_level;
+
+	bool dirty;
+
+	struct sg_table *sg_table;
+	struct page **pages;
+	int pages_pin_count;
+
+	struct ipvr_fence *fence;
+	atomic_t reserved;
+	wait_queue_head_t event_queue;
+};
+
+struct drm_ipvr_gem_object* ipvr_gem_create(struct drm_ipvr_private *dev_priv,
+			size_t size, u32 tiling, u32 cache_level);
+void ipvr_gem_free_object(struct drm_gem_object *obj);
+void *ipvr_gem_object_vmap(struct drm_ipvr_gem_object *obj);
+int ipvr_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
+int ipvr_gem_object_apply_reloc(struct drm_ipvr_gem_object *obj,
+			u64 offset_in_bo, u32 value);
+struct sg_table *ipvr_gem_prime_get_sg_table(struct drm_gem_object *obj);
+struct drm_gem_object *ipvr_gem_prime_import_sg_table(struct drm_device *dev,
+			struct dma_buf_attachment *attach, struct sg_table *sg);
+int ipvr_gem_prime_pin(struct drm_gem_object *obj);
+void ipvr_gem_prime_unpin(struct drm_gem_object *obj);
+
+static inline unsigned long
+ipvr_gem_object_mmu_offset(struct drm_ipvr_gem_object *obj)
+{
+	return obj->mm_node.start;
+}
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_debug.c b/drivers/gpu/drm/ipvr/ipvr_debug.c
new file mode 100644
index 0000000..c30a78a
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_debug.c
@@ -0,0 +1,335 @@
+/**************************************************************************
+ * ipvr_debug.c: IPVR debugfs support to assist bug triage
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#if defined(CONFIG_DEBUG_FS)
+
+#include "ipvr_debug.h"
+#include "ipvr_drv.h"
+#include "ved_reg.h"
+#include <linux/seq_file.h>
+#include <linux/debugfs.h>
+
+union ipvr_debugfs_vars debugfs_vars;
+
+static int ipvr_debug_info(struct seq_file *m, void *data)
+{
+	seq_printf(m, "ipvr platform\n");
+	return 0;
+}
+
+/* some bookkeeping */
+void
+ipvr_stat_add_object(struct drm_ipvr_private *dev_priv, struct drm_ipvr_gem_object *obj)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.allocated_count++;
+	dev_priv->ipvr_stat.allocated_memory += obj->base.size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+void
+ipvr_stat_remove_object(struct drm_ipvr_private *dev_priv, struct drm_ipvr_gem_object *obj)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.allocated_count--;
+	dev_priv->ipvr_stat.allocated_memory -= obj->base.size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+void
+ipvr_stat_add_imported(struct drm_ipvr_private *dev_priv, struct drm_ipvr_gem_object *obj)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.imported_count++;
+	dev_priv->ipvr_stat.imported_memory += obj->base.size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+void
+ipvr_stat_remove_imported(struct drm_ipvr_private *dev_priv, struct drm_ipvr_gem_object *obj)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.imported_count--;
+	dev_priv->ipvr_stat.imported_memory -= obj->base.size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+void
+ipvr_stat_add_exported(struct drm_ipvr_private *dev_priv, struct drm_ipvr_gem_object *obj)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.exported_count++;
+	dev_priv->ipvr_stat.exported_memory += obj->base.size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+void
+ipvr_stat_remove_exported(struct drm_ipvr_private *dev_priv, struct drm_ipvr_gem_object *obj)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.exported_count--;
+	dev_priv->ipvr_stat.exported_memory -= obj->base.size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+void ipvr_stat_add_mmu_bind(struct drm_ipvr_private *dev_priv, size_t size)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.mmu_used_size += size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+void ipvr_stat_remove_mmu_bind(struct drm_ipvr_private *dev_priv, size_t size)
+{
+	spin_lock(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.mmu_used_size -= size;
+	spin_unlock(&dev_priv->ipvr_stat.object_stat_lock);
+}
+
+static int ipvr_debug_gem_object_info(struct seq_file *m, void* data)
+{
+	struct drm_info_node *node = (struct drm_info_node *) m->private;
+	struct drm_device *dev = node->minor->dev;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	int ret;
+
+	ret = mutex_lock_interruptible(&dev->struct_mutex);
+	if (ret)
+		return ret;
+
+	seq_printf(m, "total allocate %u objects, %zu bytes\n\n",
+		   dev_priv->ipvr_stat.allocated_count,
+		   dev_priv->ipvr_stat.allocated_memory);
+	seq_printf(m, "total imported %u objects, %zu bytes\n\n",
+		   dev_priv->ipvr_stat.imported_count,
+		   dev_priv->ipvr_stat.imported_memory);
+	seq_printf(m, "total exported %u objects, %zu bytes\n\n",
+		   dev_priv->ipvr_stat.exported_count,
+		   dev_priv->ipvr_stat.exported_memory);
+	seq_printf(m, "total used MMU size %zu bytes\n\n",
+		   dev_priv->ipvr_stat.mmu_used_size);
+
+	mutex_unlock(&dev->struct_mutex);
+
+	return 0;
+}
+
+static int ipvr_debug_gem_seqno_info(struct seq_file *m, void *data)
+{
+	struct drm_info_node *node = (struct drm_info_node *) m->private;
+	struct drm_device *dev = node->minor->dev;
+	drm_ipvr_private_t *dev_priv = dev->dev_private;
+	int ret;
+
+	ret = mutex_lock_interruptible(&dev->struct_mutex);
+	if (ret)
+		return ret;
+
+	seq_printf(m, "last signaled seq is %d, last emitted seq is %d\n",
+		atomic_read(&dev_priv->fence_drv.signaled_seq),
+		dev_priv->fence_drv.sync_seq);
+
+	mutex_unlock(&dev->struct_mutex);
+
+	return 0;
+}
+
+static ssize_t ipvr_debug_ved_reg_read(struct file *filp, char __user *ubuf,
+					size_t max, loff_t *ppos)
+{
+	struct drm_device *dev = filp->private_data;
+	drm_ipvr_private_t *dev_priv = dev->dev_private;
+	char buf[200], offset[20], operation[10], format[20], val[20];
+	int len = 0, ret, no_of_tokens;
+	unsigned long reg_offset, reg_to_write;
+
+	if (debugfs_vars.reg.reg_input == 0)
+		return len;
+
+	snprintf(format, sizeof(format), "%%%zus %%%zus %%%zus",
+			sizeof(operation), sizeof(offset), sizeof(val));
+
+	no_of_tokens = sscanf(debugfs_vars.reg.reg_vars,
+					format, operation, offset, val);
+
+	if (no_of_tokens < 3)
+		return len;
+
+	len = sizeof(debugfs_vars.reg.reg_vars);
+
+	if (strcmp(operation, IPVR_READ_TOKEN) == 0) {
+		ret = kstrtoul(offset, 16, &reg_offset);
+		if (ret)
+			return -EINVAL;
+
+		len = scnprintf(buf, sizeof(buf), "0x%x: 0x%x\n",
+			(u32)reg_offset,
+			IPVR_REG_READ32((u32)reg_offset));
+	} else if (strcmp(operation, IPVR_WRITE_TOKEN) == 0) {
+		ret = kstrtoul(offset, 16, &reg_offset);
+		if (ret)
+			return -EINVAL;
+
+		ret = kstrtoul(val, 16, &reg_to_write);
+		if (ret)
+			return -EINVAL;
+
+		IPVR_REG_WRITE32(reg_offset, reg_to_write);
+		len = scnprintf(buf, sizeof(buf),
+				"0x%x: 0x%x\n",
+				(u32)reg_offset,
+				(u32)IPVR_REG_READ32(reg_offset));
+	} else {
+		len = scnprintf(buf, sizeof(buf), "Operation Not Supported\n");
+	}
+
+	debugfs_vars.reg.reg_input = 0;
+
+	simple_read_from_buffer(ubuf, max, ppos, buf, len);
+
+	return len;
+}
+
+static ssize_t
+ipvr_debug_ved_reg_write(struct file *filp,const char __user *ubuf,
+			size_t cnt, loff_t *ppos)
+{
+	/* reset the string */
+	memset(debugfs_vars.reg.reg_vars, 0, IPVR_MAX_BUFFER_STR_LEN);
+
+	if (cnt > 0) {
+		if (cnt > sizeof(debugfs_vars.reg.reg_vars) - 1)
+			return -EINVAL;
+
+		if (copy_from_user(debugfs_vars.reg.reg_vars, ubuf, cnt))
+			return -EFAULT;
+
+		debugfs_vars.reg.reg_vars[cnt] = 0;
+
+		/* Enable Read */
+		debugfs_vars.reg.reg_input = 1;
+	}
+
+	return cnt;
+}
+
+/* As the drm_debugfs_init() routines are called before dev->dev_private is
+ * allocated we need to hook into the minor for release. */
+static int ipvr_add_fake_info_node(struct drm_minor *minor,
+					struct dentry *ent, const void *key)
+{
+	struct drm_info_node *node;
+
+	node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
+	if (node == NULL) {
+		debugfs_remove(ent);
+		return -ENOMEM;
+	}
+
+	node->minor = minor;
+	node->dent = ent;
+	node->info_ent = (void *) key;
+
+	mutex_lock(&minor->debugfs_lock);
+	list_add(&node->list, &minor->debugfs_list);
+	mutex_unlock(&minor->debugfs_lock);
+
+	return 0;
+}
+
+static int ipvr_debugfs_create(struct dentry *root,
+			       struct drm_minor *minor,
+			       const char *name,
+			       const struct file_operations *fops)
+{
+	struct drm_device *dev = minor->dev;
+	struct dentry *ent;
+
+	ent = debugfs_create_file(name,
+				  S_IRUGO | S_IWUSR,
+				  root, dev,
+				  fops);
+	if (IS_ERR(ent))
+		return PTR_ERR(ent);
+
+	return ipvr_add_fake_info_node(minor, ent, fops);
+}
+
+static const struct file_operations ipvr_ved_reg_fops = {
+	.owner = THIS_MODULE,
+	.open = simple_open,
+	.read = ipvr_debug_ved_reg_read,
+	.write = ipvr_debug_ved_reg_write,
+	.llseek = default_llseek,
+};
+
+static struct drm_info_list ipvr_debugfs_list[] = {
+	{"ipvr_capabilities", ipvr_debug_info, 0},
+	{"ipvr_gem_objects", ipvr_debug_gem_object_info, 0},
+	{"ipvr_gem_seqno", ipvr_debug_gem_seqno_info, 0},
+
+};
+#define IPVR_DEBUGFS_ENTRIES ARRAY_SIZE(ipvr_debugfs_list)
+
+static struct ipvr_debugfs_files {
+	const char *name;
+	const struct file_operations *fops;
+} ipvr_debugfs_files[] = {
+	{"ipvr_ved_reg_api", &ipvr_ved_reg_fops},
+};
+
+int ipvr_debugfs_init(struct drm_minor *minor)
+{
+	int ret, i;
+
+	for (i = 0; i < ARRAY_SIZE(ipvr_debugfs_files); i++) {
+		ret = ipvr_debugfs_create(minor->debugfs_root, minor,
+				   ipvr_debugfs_files[i].name,
+				   ipvr_debugfs_files[i].fops);
+		if (ret)
+			return ret;
+	}
+
+	return drm_debugfs_create_files(ipvr_debugfs_list,
+				 IPVR_DEBUGFS_ENTRIES,
+				 minor->debugfs_root, minor);
+}
+
+void ipvr_debugfs_cleanup(struct drm_minor *minor)
+{
+	int i;
+
+	drm_debugfs_remove_files(ipvr_debugfs_list,
+			  IPVR_DEBUGFS_ENTRIES, minor);
+
+	for (i = 0; i < ARRAY_SIZE(ipvr_debugfs_files); i++) {
+		struct drm_info_list *info_list =
+			(struct drm_info_list *)ipvr_debugfs_files[i].fops;
+
+		drm_debugfs_remove_files(info_list, 1, minor);
+	}
+}
+
+#endif /* CONFIG_DEBUG_FS */
diff --git a/drivers/gpu/drm/ipvr/ipvr_debug.h b/drivers/gpu/drm/ipvr/ipvr_debug.h
new file mode 100644
index 0000000..a88382e
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_debug.h
@@ -0,0 +1,76 @@
+/**************************************************************************
+ * ipvr_debug.h: IPVR debugfs support header file
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+
+#ifndef _IPVR_DEBUG_H_
+#define _IPVR_DEBUG_H_
+
+#include "ipvr_bo.h"
+#include "drmP.h"
+
+/* Operations supported */
+#define IPVR_MAX_BUFFER_STR_LEN		200
+
+#define IPVR_READ_TOKEN			"READ"
+#define IPVR_WRITE_TOKEN		"WRITE"
+
+/* DebugFS Variable declaration */
+struct ipvr_debugfs_reg_vars {
+	char reg_vars[IPVR_MAX_BUFFER_STR_LEN];
+	u32 reg_input;
+};
+
+union ipvr_debugfs_vars {
+	struct ipvr_debugfs_reg_vars reg;
+};
+
+int ipvr_debugfs_init(struct drm_minor *minor);
+void ipvr_debugfs_cleanup(struct drm_minor *minor);
+
+void ipvr_stat_add_object(struct drm_ipvr_private *dev_priv,
+			struct drm_ipvr_gem_object *obj);
+
+void ipvr_stat_remove_object(struct drm_ipvr_private *dev_priv,
+			struct drm_ipvr_gem_object *obj);
+
+void ipvr_stat_add_imported(struct drm_ipvr_private *dev_priv,
+			struct drm_ipvr_gem_object *obj);
+
+void ipvr_stat_remove_imported(struct drm_ipvr_private *dev_priv,
+			struct drm_ipvr_gem_object *obj);
+
+void ipvr_stat_add_exported(struct drm_ipvr_private *dev_priv,
+			struct drm_ipvr_gem_object *obj);
+
+void ipvr_stat_remove_exported(struct drm_ipvr_private *dev_priv,
+			struct drm_ipvr_gem_object *obj);
+
+void ipvr_stat_add_mmu_bind(struct drm_ipvr_private *dev_priv,
+			size_t size);
+
+void ipvr_stat_remove_mmu_bind(struct drm_ipvr_private *dev_priv,
+			size_t size);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_drm.h b/drivers/gpu/drm/ipvr/ipvr_drm.h
new file mode 100644
index 0000000..fade9a3
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_drm.h
@@ -0,0 +1,259 @@
+/**************************************************************************
+ * ipvr_drm.h: IPVR header file exported to user space
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+
+/* this file only define structs and macro which need export to user space */
+#ifndef _IPVR_DRM_H_
+#define _IPVR_DRM_H_
+
+#include <drm/drm.h>
+struct drm_ipvr_context_create {
+	/* passed ctx_info, including codec, profile info */
+#define IPVR_CONTEXT_TYPE_VED   (0x1)
+	__u32 ctx_type;
+	/* returned back ctx_id */
+	__u32 ctx_id;
+	/*
+	 * following tiling strides for VED are supported:
+	 * stride 0: 512 for scheme 0, 1024 for scheme 1
+	 * stride 1: 1024 for scheme 0, 2048 for scheme 1
+	 * stride 2: 2048 for scheme 0, 4096 for scheme 1
+	 * stride 3: 4096 for scheme 0
+	 */
+	__u32 tiling_stride;
+	/*
+	 * scheme 0: tile is 256x16, while minimal tile stride is 512
+	 * scheme 1: tile is 512x8, while minimal tile stride is 1024
+	 */
+	__u32 tiling_scheme;
+};
+
+struct drm_ipvr_context_destroy {
+	__u32 ctx_id;
+	__u32 pad64;
+};
+
+/* ioctl used for querying info from driver */
+enum drm_ipvr_misc_key {
+	IPVR_DEVICE_INFO,
+};
+struct drm_ipvr_get_info {
+	__u64 key;
+	__u64 value;
+};
+
+struct drm_ipvr_gem_relocation_entry {
+	/**
+	 * Handle of the buffer being pointed to by this relocation entry.
+	 *
+	 * It's appealing to make this be an index into the mm_validate_entry
+	 * list to refer to the buffer, but this allows the driver to create
+	 * a relocation list for state buffers and not re-write it per
+	 * exec using the buffer.
+	 */
+	__u32 target_handle;
+
+	/**
+	 * Value to be added to the offset of the target buffer to make up
+	 * the relocation entry.
+	 */
+	__u32 delta;
+
+	/** Offset in the buffer the relocation entry will be written into */
+	__u64 offset;
+
+	/**
+	 * Offset value of the target buffer that the relocation entry was last
+	 * written as.
+	 *
+	 * If the buffer has the same offset as last time, we can skip syncing
+	 * and writing the relocation.  This value is written back out by
+	 * the execbuffer ioctl when the relocation is written.
+	 */
+	__u64 presumed_offset;
+
+	/**
+	 * Target memory domains read by this operation.
+	 */
+	__u32 read_domains;
+
+	/**
+	 * Target memory domains written by this operation.
+	 *
+	 * Note that only one domain may be written by the whole
+	 * execbuffer operation, so that where there are conflicts,
+	 * the application will get -EINVAL back.
+	 */
+	__u32 write_domain;
+};
+
+struct drm_ipvr_gem_exec_object {
+	/**
+	 * User's handle for a buffer to be bound into the MMU for this
+	 * operation.
+	 */
+	__u32 handle;
+
+	/** Number of relocations to be performed on this buffer */
+	__u32 relocation_count;
+	/**
+	 * Pointer to array of struct drm_i915_gem_relocation_entry containing
+	 * the relocations to be performed in this buffer.
+	 */
+	__u64 relocs_ptr;
+
+	/** Required alignment in graphics aperture */
+	__u64 alignment;
+
+	/**
+	 * Returned value of the updated offset of the object, for future
+	 * presumed_offset writes.
+	 */
+	__u64 offset;
+
+#define IPVR_EXEC_OBJECT_NEED_FENCE (1 << 0)
+#define IPVR_EXEC_OBJECT_SUBMIT     (1 << 1)
+	__u64 flags;
+
+	__u64 rsvd1;
+	__u64 rsvd2;
+};
+
+struct drm_ipvr_gem_execbuffer {
+	/**
+	 * List of gem_exec_object2 structs
+	 */
+	__u64 buffers_ptr;
+	__u32 buffer_count;
+
+	/** Offset in the batchbuffer to start execution from. */
+	__u32 exec_start_offset;
+	/** Bytes used in batchbuffer from batch_start_offset */
+	__u32 exec_len;
+
+	/**
+	 * ID of hardware context.
+	 */
+	__u32 ctx_id;
+
+	__u64 flags;
+	__u64 rsvd1;
+	__u64 rsvd2;
+};
+
+enum ipvr_cache_level
+{
+	IPVR_CACHE_UNCACHED,
+	IPVR_CACHE_WRITEBACK,
+	IPVR_CACHE_WRITECOMBINE,
+	IPVR_CACHE_MAX,
+};
+
+struct drm_ipvr_gem_create {
+	/*
+	 * Requested size for the object.
+	 * The (page-aligned) allocated size for the object will be returned.
+	 */
+	__u64 size;
+	__u64 rounded_size;
+	__u64 mmu_offset;
+	/*
+	 * Returned handle for the object.
+	 * Object handles are nonzero.
+	 */
+	__u32 handle;
+	__u32 tiling;
+
+	__u32 cache_level;
+	__u32 pad64;
+	/*
+	 * Handle used for user to mmap BO
+	 */
+	__u64 map_offset;
+};
+
+struct drm_ipvr_gem_busy {
+	/* Handle of the buffer to check for busy */
+	__u32 handle;
+
+	/*
+	 * Return busy status (1 if busy, 0 if idle).
+	 * The high word is used to indicate on which rings the object
+	 * currently resides:
+	 *  16:31 - busy (r or r/w) rings (16 render, 17 bsd, 18 blt, etc)
+	 */
+	__u32 busy;
+};
+
+struct drm_ipvr_gem_mmap_offset {
+	/** Handle for the object being mapped. */
+	__u32 handle;
+	__u32 pad64;
+	/**
+	 * Fake offset to use for subsequent mmap call
+	 *
+	 * This is a fixed-size type for 32/64 compatibility.
+	 */
+	__u64 offset;
+};
+
+struct drm_ipvr_gem_wait {
+	/* Handle of BO we shall wait on */
+	__u32 handle;
+	__u32 flags;
+	/** Number of nanoseconds to wait, Returns time remaining. */
+	__s64 timeout_ns;
+};
+
+/*
+ * IPVR GEM specific ioctls
+ */
+#define DRM_IPVR_CONTEXT_CREATE     0x00
+#define DRM_IPVR_CONTEXT_DESTROY    0x01
+#define DRM_IPVR_GET_INFO           0x02
+#define DRM_IPVR_GEM_EXECBUFFER     0x03
+#define DRM_IPVR_GEM_BUSY           0x04
+#define DRM_IPVR_GEM_CREATE         0x05
+#define DRM_IPVR_GEM_WAIT           0x06
+#define DRM_IPVR_GEM_MMAP_OFFSET    0x07
+
+#define DRM_IOCTL_IPVR_CONTEXT_CREATE	\
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_IPVR_CONTEXT_CREATE, struct drm_ipvr_context_create)
+#define DRM_IOCTL_IPVR_CONTEXT_DESTROY	\
+	DRM_IOW(DRM_COMMAND_BASE + DRM_IPVR_CONTEXT_DESTROY, struct drm_ipvr_context_destroy)
+#define DRM_IOCTL_IPVR_GET_INFO		\
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_IPVR_GET_INFO, struct drm_ipvr_get_info)
+#define DRM_IOCTL_IPVR_GEM_EXECBUFFER	\
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_IPVR_GEM_EXECBUFFER, struct drm_ipvr_gem_execbuffer)
+#define DRM_IOCTL_IPVR_GEM_BUSY		\
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_IPVR_GEM_BUSY, struct drm_ipvr_gem_busy)
+#define DRM_IOCTL_IPVR_GEM_CREATE	\
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_IPVR_GEM_CREATE, struct drm_ipvr_gem_create)
+#define DRM_IOCTL_IPVR_GEM_WAIT		\
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_IPVR_GEM_WAIT, struct drm_ipvr_gem_wait)
+#define DRM_IOCTL_IPVR_GEM_MMAP_OFFSET	\
+	DRM_IOWR(DRM_COMMAND_BASE + DRM_IPVR_GEM_MMAP_OFFSET, struct drm_ipvr_gem_mmap_offset)
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_drv.c b/drivers/gpu/drm/ipvr/ipvr_drv.c
new file mode 100644
index 0000000..29ffe39
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_drv.c
@@ -0,0 +1,617 @@
+/**************************************************************************
+ * ipvr_drv.c: IPVR driver common file for initialization/de-initialization
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_drv.h"
+#include "ipvr_gem.h"
+#include "ipvr_mmu.h"
+#include "ipvr_exec.h"
+#include "ipvr_bo.h"
+#include "ipvr_debug.h"
+#include "ipvr_trace.h"
+#include "ved_fw.h"
+#include "ved_pm.h"
+#include "ved_reg.h"
+#include "ved_cmd.h"
+#include <linux/device.h>
+#include <linux/version.h>
+#include <uapi/drm/drm.h>
+#include <linux/pm_runtime.h>
+#include <linux/console.h>
+#include <linux/module.h>
+#include <asm/uaccess.h>
+
+int drm_ipvr_debug = 0x80;
+int drm_ipvr_freq = 320;
+
+module_param_named(debug, drm_ipvr_debug, int, 0600);
+module_param_named(freq, drm_ipvr_freq, int, 0600);
+
+MODULE_PARM_DESC(debug,
+		"control debug info output"
+		"default: 0"
+		"0x01:IPVR_D_GENERAL, 0x02:IPVR_D_INIT, 0x04:IPVR_D_IRQ, 0x08:IPVR_D_ENTRY"
+		"0x10:IPVR_D_PM, 0x20:IPVR_D_REG, 0x40:IPVR_D_VED, 0x80:IPVR_D_WARN");
+MODULE_PARM_DESC(freq,
+		"prefered VED frequency"
+		"default: 320 MHz");
+
+static struct drm_ioctl_desc ipvr_gem_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(IPVR_CONTEXT_CREATE,
+			ipvr_context_create_ioctl, DRM_AUTH|DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(IPVR_CONTEXT_DESTROY,
+			ipvr_context_destroy_ioctl, DRM_AUTH|DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(IPVR_GET_INFO,
+			ipvr_get_info_ioctl, DRM_AUTH|DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(IPVR_GEM_EXECBUFFER,
+			ipvr_gem_execbuffer_ioctl, DRM_AUTH|DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(IPVR_GEM_BUSY,
+			ipvr_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(IPVR_GEM_CREATE,
+			ipvr_gem_create_ioctl, DRM_AUTH|DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(IPVR_GEM_WAIT,
+			ipvr_gem_wait_ioctl, DRM_AUTH|DRM_UNLOCKED),
+	DRM_IOCTL_DEF_DRV(IPVR_GEM_MMAP_OFFSET,
+			ipvr_gem_mmap_offset_ioctl, DRM_AUTH|DRM_UNLOCKED),
+};
+
+static void ipvr_gem_init(struct drm_device *dev)
+{
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+
+	dev_priv->ipvr_bo_slab = kmem_cache_create("ipvr_gem_object",
+				  sizeof(struct drm_ipvr_gem_object), 0,
+				  SLAB_HWCACHE_ALIGN, NULL);
+
+	spin_lock_init(&dev_priv->ipvr_stat.object_stat_lock);
+	dev_priv->ipvr_stat.interruptible = true;
+}
+
+static void ipvr_gem_setup_mmu(struct drm_device *dev,
+				       unsigned long linear_start,
+				       unsigned long linear_end,
+				       unsigned long tiling_start,
+				       unsigned long tiling_end)
+{
+	/* Let GEM Manage all of the aperture.
+	 */
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	struct ipvr_address_space *addr_space = &dev_priv->addr_space;
+
+	addr_space->dev = dev_priv->dev;
+
+	/* Subtract the guard page ... */
+	drm_mm_init(&addr_space->linear_mm, linear_start,
+		    linear_end - linear_start - PAGE_SIZE);
+	dev_priv->addr_space.linear_start = linear_start;
+	dev_priv->addr_space.linear_total = linear_end - linear_start;
+
+	drm_mm_init(&addr_space->tiling_mm, tiling_start,
+		    tiling_end - tiling_start - PAGE_SIZE);
+	dev_priv->addr_space.tiling_start = tiling_start;
+	dev_priv->addr_space.tiling_total = tiling_end - tiling_start;
+}
+
+int ipvr_runtime_pm_get(struct drm_ipvr_private *dev_priv)
+{
+	int ret = 0;
+	int pending;
+	unsigned long irq_flags;
+	struct platform_device *platdev = dev_priv->dev->platformdev;
+	BUG_ON(!platdev);
+	BUG_ON(atomic_read(&dev_priv->pending_events) < 0);
+	spin_lock_irqsave(&dev_priv->power_usage_lock, irq_flags);
+	if ((pending = atomic_inc_return(&dev_priv->pending_events)) == 1) {
+		do {
+			ret = pm_runtime_get_sync(&platdev->dev);
+			if (ret == -EAGAIN) {
+				IPVR_DEBUG_WARN("pm_runtime_get_sync returns EAGAIN\n");
+			}
+			else if (ret < 0) {
+				IPVR_ERROR("pm_runtime_get_sync returns %d\n", ret);
+				pending = atomic_dec_return(&dev_priv->pending_events);
+			}
+		} while (ret == -EAGAIN);
+	}
+	trace_ipvr_get_power(atomic_read(&platdev->dev.power.usage_count),
+		pending);
+	spin_unlock_irqrestore(&dev_priv->power_usage_lock, irq_flags);
+	return ret;
+}
+
+int ipvr_runtime_pm_put(struct drm_ipvr_private *dev_priv, bool async)
+{
+	int ret = 0;
+	int pending;
+	unsigned long irq_flags;
+	struct platform_device *platdev = dev_priv->dev->platformdev;
+	BUG_ON(!platdev);
+	BUG_ON(atomic_read(&dev_priv->pending_events) <= 0);
+	spin_lock_irqsave(&dev_priv->power_usage_lock, irq_flags);
+	if ((pending = atomic_dec_return(&dev_priv->pending_events)) == 0) {
+		do {
+			if (async)
+				ret = pm_runtime_put(&platdev->dev);
+			else
+				ret = pm_runtime_put_sync(&platdev->dev);
+			if (ret == -EAGAIN)
+				IPVR_DEBUG_WARN("pm_runtime_put returns EAGAIN\n");
+			else if (ret < 0)
+				IPVR_ERROR("pm_runtime_put returns %d\n", ret);
+		} while (ret == -EAGAIN);
+	}
+	trace_ipvr_put_power(atomic_read(&platdev->dev.power.usage_count),
+		pending);
+	spin_unlock_irqrestore(&dev_priv->power_usage_lock, irq_flags);
+	return ret;
+}
+
+int ipvr_runtime_pm_put_all(struct drm_ipvr_private *dev_priv, bool async)
+{
+	int ret = 0;
+	unsigned long irq_flags;
+	struct platform_device *platdev = dev_priv->dev->platformdev;
+	BUG_ON(!platdev);
+	spin_lock_irqsave(&dev_priv->power_usage_lock, irq_flags);
+	if (atomic_read(&dev_priv->pending_events) > 0) {
+		atomic_set(&dev_priv->pending_events, 0);
+		do {
+			if (async)
+				ret = pm_runtime_put(&platdev->dev);
+			else
+				ret = pm_runtime_put_sync(&platdev->dev);
+			if (ret == -EAGAIN)
+				IPVR_DEBUG_WARN("pm_runtime_put returns EAGAIN\n");
+			else if (ret < 0)
+				IPVR_ERROR("pm_runtime_put returns %d\n", ret);
+		} while (ret == -EAGAIN);
+	}
+	trace_ipvr_put_power(atomic_read(&platdev->dev.power.usage_count),
+		0);
+	spin_unlock_irqrestore(&dev_priv->power_usage_lock, irq_flags);
+	return ret;
+}
+
+static int ipvr_drm_unload(struct drm_device *dev)
+{
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	IPVR_DEBUG_ENTRY("entered.");
+	BUG_ON(!dev->platformdev);
+
+	if (dev_priv) {
+		if (dev_priv->ipvr_bo_slab)
+			kmem_cache_destroy(dev_priv->ipvr_bo_slab);
+		ipvr_fence_driver_fini(dev_priv);
+
+		if (WARN_ON(ipvr_runtime_pm_get(dev_priv) < 0))
+			IPVR_DEBUG_WARN("Error getting ipvr power\n");
+		else {
+			ved_core_deinit(dev_priv);
+			if (WARN_ON(ipvr_runtime_pm_put_all(dev_priv, false) < 0))
+				IPVR_DEBUG_WARN("Error getting ipvr power\n");
+		}
+		if (dev_priv->validate_ctx.buffers)
+			vfree(dev_priv->validate_ctx.buffers);
+
+		if (dev_priv->mmu) {
+			ipvr_mmu_driver_takedown(dev_priv->mmu);
+			dev_priv->mmu = NULL;
+		}
+
+		if (dev_priv->reg_base) {
+			iounmap(dev_priv->reg_base);
+			dev_priv->reg_base = NULL;
+		}
+
+		list_del(&dev_priv->default_ctx.head);
+		idr_remove(&dev_priv->ipvr_ctx_idr, dev_priv->default_ctx.ctx_id);
+		kfree(dev_priv);
+
+	}
+	pm_runtime_disable(&dev->platformdev->dev);
+
+	return 0;
+}
+
+static int ipvr_drm_load(struct drm_device *dev, unsigned long flags)
+{
+	struct drm_ipvr_private *dev_priv;
+	u32 ctx_id;
+	int ret = 0;
+	struct resource *res_mmio;
+	void __iomem* mmio_start;
+
+	if (!dev->platformdev)
+		return -ENODEV;
+
+	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
+	if (dev_priv == NULL)
+		return -ENOMEM;
+
+	dev->dev_private = dev_priv;
+	dev_priv->dev = dev;
+
+	INIT_LIST_HEAD(&dev_priv->validate_ctx.validate_list);
+
+	dev_priv->pci_root = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
+	if (!dev_priv->pci_root) {
+		kfree(dev_priv);
+		return -ENODEV;
+	}
+
+	dev->irq = platform_get_irq(dev->platformdev, 0);
+	if (dev->irq < 0) {
+		kfree(dev_priv);
+		return -ENODEV;
+	}
+
+	res_mmio = platform_get_resource(dev->platformdev, IORESOURCE_MEM, 0);
+	if (!res_mmio) {
+		kfree(dev_priv);
+		return -ENXIO;
+	}
+
+	mmio_start = ioremap_nocache(res_mmio->start,
+					res_mmio->end - res_mmio->start);
+	if (!mmio_start) {
+		kfree(dev_priv);
+		return -EACCES;
+	}
+
+	dev_priv->reg_base = mmio_start;
+	IPVR_DEBUG_VED("reg_base is %p - 0x%p.\n",
+		dev_priv->reg_base,
+		dev_priv->reg_base + (res_mmio->end - res_mmio->start));
+
+	atomic_set(&dev_priv->pending_events, 0);
+	spin_lock_init(&dev_priv->power_usage_lock);
+	pm_runtime_enable(&dev->platformdev->dev);
+	if (WARN_ON(ipvr_runtime_pm_get(dev_priv) < 0)) {
+		IPVR_ERROR("Error getting ipvr power\n");
+		ret = -EBUSY;
+		goto out_err;
+	}
+
+	IPVR_DEBUG_INIT("MSVDX_CORE_REV_OFFSET by readl is 0x%x.\n",
+		readl(dev_priv->reg_base + 0x640));
+	IPVR_DEBUG_INIT("MSVDX_CORE_REV_OFFSET by VED_REG_READ32 is 0x%x.\n",
+		IPVR_REG_READ32(MSVDX_CORE_REV_OFFSET));
+
+	/* mmu init */
+	dev_priv->mmu = ipvr_mmu_driver_init(NULL, 0, dev_priv);
+	if (!dev_priv->mmu) {
+		ret = -EBUSY;
+		goto out_err;
+	}
+
+	ipvr_mmu_set_pd_context(ipvr_mmu_get_default_pd(dev_priv->mmu), 0);
+
+	/*
+	 * Initialize sequence numbers for the different command
+	 * submission mechanisms.
+	 */
+	dev_priv->last_seq = 1;
+
+	ipvr_gem_init(dev);
+
+	ipvr_gem_setup_mmu(dev,
+		IPVR_MEM_MMU_LINEAR_START,
+		IPVR_MEM_MMU_LINEAR_END,
+		IPVR_MEM_MMU_TILING_START,
+		IPVR_MEM_MMU_TILING_END);
+
+	ved_core_init(dev_priv);
+
+	if (WARN_ON(ipvr_runtime_pm_put(dev_priv, false) < 0))
+		IPVR_DEBUG_WARN("Error putting ipvr power\n");
+
+	dev_priv->ved_private->ved_needs_reset = 1;
+
+	ipvr_fence_driver_init(dev_priv);
+
+	dev_priv->validate_ctx.buffers =
+		vmalloc(IPVR_NUM_VALIDATE_BUFFERS *
+			sizeof(struct ipvr_validate_buffer));
+	if (!dev_priv->validate_ctx.buffers) {
+		ret = -ENOMEM;
+		goto out_err;
+	}
+
+	/* ipvr context initialization */
+	spin_lock_init(&dev_priv->ipvr_ctx_lock);
+	idr_init(&dev_priv->ipvr_ctx_idr);
+	/* default ipvr context is used for scaling, rotation case */
+	ctx_id = idr_alloc(&dev_priv->ipvr_ctx_idr, &dev_priv->default_ctx,
+			   IPVR_MIN_CONTEXT_ID, IPVR_MAX_CONTEXT_ID,
+			   GFP_NOWAIT);
+	if (ctx_id < 0) {
+		return -ENOMEM;
+		goto out_err;
+	}
+	dev_priv->default_ctx.ctx_id = ctx_id;
+	INIT_LIST_HEAD(&dev_priv->default_ctx.head);
+	dev_priv->default_ctx.ctx_type = 0;
+	dev_priv->default_ctx.ipvr_fpriv = NULL;
+
+	/* don't need protect with spinlock during module load stage */
+	dev_priv->default_ctx.tiling_scheme = 0;
+	dev_priv->default_ctx.tiling_stride = 0;
+
+	return 0;
+out_err:
+	ipvr_drm_unload(dev);
+	return ret;
+}
+
+/*
+ * The .open() method is called every time the device is opened by an
+ * application. Drivers can allocate per-file private data in this method and
+ * store them in the struct drm_file::driver_priv field. Note that the .open()
+ * method is called before .firstopen().
+ */
+static int
+ipvr_drm_open(struct drm_device *dev, struct drm_file *file_priv)
+{
+	struct drm_ipvr_file_private *ipvr_fp;
+	IPVR_DEBUG_ENTRY("enter\n");
+
+	ipvr_fp = kzalloc(sizeof(*ipvr_fp), GFP_KERNEL);
+	if (!ipvr_fp)
+		return -ENOMEM;
+
+	file_priv->driver_priv = ipvr_fp;
+	INIT_LIST_HEAD(&ipvr_fp->ctx_list);
+	return 0;
+}
+
+/*
+ * The close operation is split into .preclose() and .postclose() methods.
+ * Since .postclose() is deprecated, all resource destruction related to file
+ * handle are now done in .preclose() method.
+ */
+static void
+ipvr_drm_preclose(struct drm_device *dev, struct drm_file *file_priv)
+{
+	/* force close all contexts not explicitly closed by user */
+	struct drm_ipvr_private *dev_priv;
+	struct drm_ipvr_file_private *ipvr_fpriv;
+	struct ved_private *ved_priv;
+	struct ipvr_context *pos = NULL, *n = NULL;
+	unsigned long irq_flags;
+
+	IPVR_DEBUG_ENTRY("enter\n");
+	dev_priv = dev->dev_private;
+	ipvr_fpriv = file_priv->driver_priv;
+	ved_priv = dev_priv->ved_private;
+
+	spin_lock_irqsave(&dev_priv->ipvr_ctx_lock, irq_flags);
+	if (ved_priv && (!list_empty(&ved_priv->ved_queue)
+			|| (atomic_read(&dev_priv->pending_events) > 0))) {
+		IPVR_DEBUG_WARN("Closing the FD while pending cmds exist!\n");
+	}
+	list_for_each_entry_safe(pos, n, &ipvr_fpriv->ctx_list, head) {
+		IPVR_DEBUG_GENERAL("Video:remove context %d type 0x%x\n",
+			pos->ctx_id, pos->ctx_type);
+		list_del(&pos->head);
+		idr_remove(&dev_priv->ipvr_ctx_idr, pos->ctx_id);
+		kfree(pos);
+	}
+
+	spin_unlock_irqrestore(&dev_priv->ipvr_ctx_lock, irq_flags);
+	kfree(ipvr_fpriv);
+}
+
+static irqreturn_t ipvr_irq_handler(int irq, void *arg)
+{
+	struct drm_device *dev = (struct drm_device *) arg;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	WARN_ON(ved_irq_handler(dev_priv->ved_private));
+	return IRQ_HANDLED;
+}
+
+static const struct file_operations ipvr_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.release = drm_release,
+	.unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = drm_ioctl,
+#endif
+	.mmap = drm_gem_mmap,
+};
+
+static int ipvr_drm_freeze(struct drm_device *dev)
+{
+	int ret;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	IPVR_DEBUG_ENTRY("enter\n");
+
+	ret = ved_check_idle(dev_priv->ved_private);
+	if (ret) {
+		IPVR_DEBUG_PM("VED check idle fail: %d, skip freezing\n", ret);
+		/**
+		 * fixme: better to schedule a delayed task?
+		 */
+		return 0;
+	}
+
+	if (dev->irq_enabled) {
+		ret = drm_irq_uninstall(dev);
+		if (ret) {
+			IPVR_ERROR("Failed to uninstall drm irq handler: %d\n", ret);
+		}
+	}
+
+	if (is_ved_on(dev_priv)) {
+		if (!ved_power_off(dev_priv)) {
+			IPVR_ERROR("Failed to power off VED\n");
+			return -EFAULT;
+		}
+		IPVR_DEBUG_PM("Successfully powered off\n");
+	} else {
+		IPVR_DEBUG_PM("Skiped power-off since already powered off\n");
+	}
+
+	return 0;
+}
+
+static int ipvr_drm_thaw(struct drm_device *dev)
+{
+	int ret;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	IPVR_DEBUG_ENTRY("enter\n");
+	if (!is_ved_on(dev_priv)) {
+		if (!ved_power_on(dev_priv)) {
+			IPVR_ERROR("Failed to power on VED\n");
+			return -EFAULT;
+		}
+		IPVR_DEBUG_PM("Successfully powered on\n");
+	} else {
+		IPVR_DEBUG_PM("Skiped power-on since already powered on\n");
+	}
+
+	if (!dev->irq_enabled) {
+		ret = drm_irq_install(dev, dev->irq);
+		if (ret) {
+			IPVR_ERROR("Failed to install drm irq handler: %d\n", ret);
+		}
+	}
+
+	return 0;
+}
+
+static int ipvr_pm_suspend(struct device *dev)
+{
+	struct platform_device *platformdev = to_platform_device(dev);
+	struct drm_device *drm_dev = platform_get_drvdata(platformdev);
+	IPVR_DEBUG_PM("PM suspend called\n");
+	return drm_dev? ipvr_drm_freeze(drm_dev): 0;
+}
+static int ipvr_pm_resume(struct device *dev)
+{
+	struct platform_device *platformdev = to_platform_device(dev);
+	struct drm_device *drm_dev = platform_get_drvdata(platformdev);
+	IPVR_DEBUG_PM("PM resume called\n");
+	return drm_dev? ipvr_drm_thaw(drm_dev): 0;
+}
+
+static const struct vm_operations_struct ipvr_gem_vm_ops = {
+	.fault = ipvr_gem_fault,
+	.open = drm_gem_vm_open,
+	.close = drm_gem_vm_close,
+};
+
+static struct drm_driver ipvr_drm_driver = {
+	.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_PRIME,
+	.load = ipvr_drm_load,
+	.unload = ipvr_drm_unload,
+	.open = ipvr_drm_open,
+	.preclose = ipvr_drm_preclose,
+	.irq_handler = ipvr_irq_handler,
+	.gem_free_object = ipvr_gem_free_object,
+	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+	.gem_prime_export	= drm_gem_prime_export,
+	.gem_prime_import	= drm_gem_prime_import,
+	.gem_prime_get_sg_table = ipvr_gem_prime_get_sg_table,
+	.gem_prime_import_sg_table = ipvr_gem_prime_import_sg_table,
+	.gem_prime_pin		= ipvr_gem_prime_pin,
+	.gem_prime_unpin	= ipvr_gem_prime_unpin,
+#ifdef CONFIG_DEBUG_FS
+	.debugfs_init = ipvr_debugfs_init,
+	.debugfs_cleanup = ipvr_debugfs_cleanup,
+#endif
+	.gem_vm_ops = &ipvr_gem_vm_ops,
+	.ioctls = ipvr_gem_ioctls,
+	.num_ioctls = ARRAY_SIZE(ipvr_gem_ioctls),
+	.fops = &ipvr_fops,
+	.name = IPVR_DRIVER_NAME,
+	.desc = IPVR_DRIVER_DESC,
+	.date = IPVR_DRIVER_DATE,
+	.major = IPVR_DRIVER_MAJOR,
+	.minor = IPVR_DRIVER_MINOR,
+	.patchlevel = IPVR_DRIVER_PATCHLEVEL,
+};
+
+static int ipvr_plat_probe(struct platform_device *device)
+{
+	struct drm_device *drm_dev;
+	int ret;
+
+	drm_dev = drm_dev_alloc(&ipvr_drm_driver, &device->dev);
+	if (!drm_dev)
+		return -ENOMEM;
+
+	drm_dev->platformdev = device;
+	platform_set_drvdata(device, drm_dev);
+	ret = drm_dev_register(drm_dev, 0);
+	if (ret)
+		goto err_free;
+
+	DRM_INFO("Initialized IPVR on minor %d\n", drm_dev->primary->index);
+
+	return 0;
+err_free:
+	drm_dev_unref(drm_dev);
+	return ret;
+}
+
+static int ipvr_plat_remove(struct platform_device *device)
+{
+	struct drm_device *drm_dev = platform_get_drvdata(device);
+	if (drm_dev) {
+		drm_dev_unregister(drm_dev);
+		drm_dev_unref(drm_dev);
+		platform_set_drvdata(device, NULL);
+	}
+	return 0;
+}
+
+static struct dev_pm_ops ipvr_pm_ops = {
+	.suspend = ipvr_pm_suspend,
+	.resume = ipvr_pm_resume,
+	.freeze = ipvr_pm_suspend,
+	.thaw = ipvr_pm_resume,
+	.poweroff = ipvr_pm_suspend,
+	.restore = ipvr_pm_resume,
+#ifdef CONFIG_PM_RUNTIME
+	.runtime_suspend = ipvr_pm_suspend,
+	.runtime_resume = ipvr_pm_resume,
+#endif
+};
+
+static struct platform_driver ipvr_vlv_plat_driver = {
+	.driver = {
+		.name = "ipvr-ved-vlv",
+		.owner = THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm = &ipvr_pm_ops,
+#endif
+	},
+	.probe = ipvr_plat_probe,
+	.remove = ipvr_plat_remove,
+};
+
+module_platform_driver(ipvr_vlv_plat_driver);
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/ipvr/ipvr_drv.h b/drivers/gpu/drm/ipvr/ipvr_drv.h
new file mode 100644
index 0000000..7f88380
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_drv.h
@@ -0,0 +1,292 @@
+/**************************************************************************
+ * ipvr_drv.h: IPVR driver common header file
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _IPVR_DRV_H_
+#define _IPVR_DRV_H_
+#include "drmP.h"
+#include "ipvr_drm.h"
+#include "ipvr_mmu.h"
+#include <linux/version.h>
+#include <linux/io-mapping.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/backlight.h>
+#include <linux/intel-iommu.h>
+#include <linux/kref.h>
+#include <linux/pm_qos.h>
+#include <linux/mmu_notifier.h>
+
+#define IPVR_DRIVER_AUTHOR		"Intel, Inc."
+#define IPVR_DRIVER_NAME		"ipvr"
+#define IPVR_DRIVER_DESC		"PowerVR video drm driver"
+#define IPVR_DRIVER_DATE		"20141113"
+#define IPVR_DRIVER_MAJOR		0
+#define IPVR_DRIVER_MINOR		1
+#define IPVR_DRIVER_PATCHLEVEL	0
+
+/* read/write domains */
+#define IPVR_GEM_DOMAIN_CPU		0x00000001
+#define IPVR_GEM_DOMAIN_VPU		0x00000002
+
+/* context ID and type */
+#define IPVR_CONTEXT_INVALID_ID 0
+#define IPVR_MIN_CONTEXT_ID 1
+#define IPVR_MAX_CONTEXT_ID 0xff
+
+/*
+ *Debug print bits setting
+ */
+#define IPVR_D_GENERAL   (1 << 0)
+#define IPVR_D_INIT      (1 << 1)
+#define IPVR_D_IRQ       (1 << 2)
+#define IPVR_D_ENTRY     (1 << 3)
+#define IPVR_D_PM        (1 << 4)
+#define IPVR_D_REG       (1 << 5)
+#define IPVR_D_VED       (1 << 6)
+#define IPVR_D_WARN      (1 << 7)
+
+#define IPVR_DEBUG_GENERAL(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_GENERAL, _fmt, ##_arg)
+#define IPVR_DEBUG_INIT(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_INIT, _fmt, ##_arg)
+#define IPVR_DEBUG_IRQ(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_IRQ, _fmt, ##_arg)
+#define IPVR_DEBUG_ENTRY(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_ENTRY, _fmt, ##_arg)
+#define IPVR_DEBUG_PM(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_PM, _fmt, ##_arg)
+#define IPVR_DEBUG_REG(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_REG, _fmt, ##_arg)
+#define IPVR_DEBUG_VED(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_VED, _fmt, ##_arg)
+#define IPVR_DEBUG_WARN(_fmt, _arg...) \
+	IPVR_DEBUG(IPVR_D_WARN, _fmt, ##_arg)
+
+#define IPVR_DEBUG(_flag, _fmt, _arg...) \
+	do { \
+		if (unlikely((_flag) & drm_ipvr_debug)) \
+			printk(KERN_INFO \
+			       "[ipvr:0x%02x:%s] " _fmt , _flag, \
+			       __func__ , ##_arg); \
+	} while (0)
+
+#define IPVR_ERROR(_fmt, _arg...) \
+	do { \
+			printk(KERN_ERR \
+			       "[ipvr:ERROR:%s] " _fmt, \
+			       __func__ , ##_arg); \
+	} while (0)
+
+#define IPVR_UDELAY(usec) \
+	do { \
+		cpu_relax(); \
+	} while (0)
+
+#define IPVR_REG_WRITE32(_val, _offs) \
+	iowrite32(_val, dev_priv->reg_base + (_offs))
+#define IPVR_REG_READ32(_offs) \
+	ioread32(dev_priv->reg_base + (_offs))
+
+typedef struct ipvr_validate_buffer ipvr_validate_buffer_t;
+
+#define to_ipvr_bo(x) container_of(x, struct drm_ipvr_gem_object, base)
+
+extern int drm_ipvr_debug;
+extern int drm_ipvr_freq;
+
+struct ipvr_validate_context {
+	ipvr_validate_buffer_t *buffers;
+	int used_buffers;
+	struct list_head validate_list;
+};
+
+struct ipvr_mmu_driver;
+struct ipvr_mmu_pd;
+
+struct ipvr_gem_stat {
+	/**
+	 * Are we in a non-interruptible section of code?
+	 */
+	bool interruptible;
+
+	/* accounting, useful for userland debugging */
+	spinlock_t object_stat_lock;
+	size_t allocated_memory;
+	int allocated_count;
+	size_t imported_memory;
+	int imported_count;
+	size_t exported_memory;
+	int exported_count;
+	size_t mmu_used_size;
+};
+
+struct ipvr_address_space {
+	struct drm_mm linear_mm;
+	struct drm_mm tiling_mm;
+	struct drm_device *dev;
+	unsigned long linear_start;
+	size_t linear_total;
+	unsigned long tiling_start;
+	size_t tiling_total;
+
+	/* need it during clear_range */
+	struct {
+		dma_addr_t addr;
+		struct page *page;
+	} scratch;
+};
+
+struct ipvr_fence_driver {
+	u16	sync_seq;
+	atomic_t signaled_seq;
+	unsigned long last_activity;
+	bool initialized;
+	spinlock_t fence_lock;
+};
+
+struct ipvr_context {
+	/* used to link into ipvr_ctx_list */
+	struct list_head head;
+	u32 ctx_id;
+	/* used to double check ctx when find with idr, may be removed */
+	struct drm_ipvr_file_private *ipvr_fpriv; /* DRM device file pointer */
+	u32 ctx_type;
+
+	u16 cur_seq;
+
+	/* for IMG DDK, only use tiling for 2k and 4k buffer stride */
+	/*
+	 * following tiling strides for VED are supported:
+	 * stride 0: 512 for scheme 0, 1024 for scheme 1
+	 * stride 1: 1024 for scheme 0, 2048 for scheme 1
+	 * stride 2: 2048 for scheme 0, 4096 for scheme 1
+	 * stride 3: 4096 for scheme 0
+	 */
+	u8 tiling_stride;
+	/*
+	 * scheme 0: tile is 256x16, while minimal tile stride is 512
+	 * scheme 1: tile is 512x8, while minimal tile stride is 1024
+	 */
+	u8 tiling_scheme;
+};
+
+typedef struct drm_ipvr_private {
+	struct drm_device *dev;
+	struct pci_dev *pci_root;
+
+	/* IMG video context */
+	spinlock_t ipvr_ctx_lock;
+	struct idr ipvr_ctx_idr;
+	struct ipvr_context default_ctx;
+
+	/* PM related */
+	atomic_t pending_events;
+	spinlock_t power_usage_lock;
+
+	/* exec related */
+	struct ipvr_validate_context validate_ctx;
+
+	/* IMG MMU specific */
+	struct ipvr_mmu_driver *mmu;
+	atomic_t ipvr_mmu_invaldc;
+
+	/* GEM mm related */
+	struct ipvr_gem_stat ipvr_stat;
+	struct kmem_cache *ipvr_bo_slab;
+	struct ipvr_address_space addr_space;
+
+	/* fence related */
+	u32 last_seq;
+	wait_queue_head_t fence_queue;
+	struct ipvr_fence_driver fence_drv;
+
+	/* MMIO window shared from parent device */
+	u8 __iomem* reg_base;
+
+	/*
+	 * VED specific
+	 */
+	struct ved_private *ved_private;
+}drm_ipvr_private_t;
+
+struct drm_ipvr_gem_object;
+
+/* VED private structure */
+struct ved_private {
+	struct drm_ipvr_private *dev_priv;
+
+	/* used to record seq got from irq fw-to-host msg */
+	u16 ved_cur_seq;
+
+	/*
+	 * VED Rendec Memory
+	 */
+	struct drm_ipvr_gem_object *ccb0;
+	u32 base_addr0;
+	struct drm_ipvr_gem_object *ccb1;
+	u32 base_addr1;
+	bool rendec_initialized;
+
+	/* VED firmware related */
+	struct drm_ipvr_gem_object  *fw_bo;
+	u32 fw_offset;
+	u32 mtx_mem_size;
+	bool fw_loaded_to_bo;
+	bool ved_fw_loaded;
+	void *ved_fw_ptr;
+	size_t ved_fw_size;
+
+	/*
+	 * ved command queue
+	 */
+	spinlock_t ved_lock;
+	struct mutex ved_mutex;
+	struct list_head ved_queue;
+	/* busy means cmd submitted to fw, while irq hasn't been receieved */
+	bool ved_busy;
+	u32 ved_dash_access_ctrl;
+
+	/* pm related */
+	int ved_needs_reset;
+
+	int default_tiling_stride;
+	int default_tiling_scheme;
+
+	struct page *mmu_recover_page;
+};
+
+struct drm_ipvr_file_private {
+	/**
+	 * protected by dev_priv->ipvr_ctx_lock
+	 */
+	struct list_head ctx_list;
+};
+
+/* helpers for runtime pm */
+int ipvr_runtime_pm_get(struct drm_ipvr_private *dev_priv);
+int ipvr_runtime_pm_put(struct drm_ipvr_private *dev_priv, bool async);
+int ipvr_runtime_pm_put_all(struct drm_ipvr_private *dev_priv, bool async);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_exec.c b/drivers/gpu/drm/ipvr/ipvr_exec.c
new file mode 100644
index 0000000..2e52dea
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_exec.c
@@ -0,0 +1,613 @@
+/**************************************************************************
+ * ipvr_exec.c: IPVR command buffer execution
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_exec.h"
+#include "ipvr_gem.h"
+#include "ipvr_mmu.h"
+#include "ipvr_bo.h"
+#include "ipvr_fence.h"
+#include "ipvr_trace.h"
+#include "ved_fw.h"
+#include "ved_msg.h"
+#include "ved_reg.h"
+#include "ved_pm.h"
+#include "ved_cmd.h"
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+
+static inline bool ipvr_bo_is_reserved(struct drm_ipvr_gem_object *obj)
+{
+	return atomic_read(&obj->reserved);
+}
+
+static int
+ipvr_bo_wait_unreserved(struct drm_ipvr_gem_object *obj, bool interruptible)
+{
+	if (interruptible) {
+		return wait_event_interruptible(obj->event_queue,
+					       !ipvr_bo_is_reserved(obj));
+	} else {
+		wait_event(obj->event_queue, !ipvr_bo_is_reserved(obj));
+		return 0;
+	}
+}
+
+/**
+ * ipvr_bo_reserve - reserve the given bo
+ *
+ * @obj:     The buffer object to reserve.
+ * @interruptible:     whether the waiting is interruptible or not.
+ * @no_wait:    flag to indicate returning immediately
+ *
+ * Returns: 0 if successful, error code otherwise
+ */
+int ipvr_bo_reserve(struct drm_ipvr_gem_object *obj,
+			bool interruptible, bool no_wait)
+{
+	int ret;
+
+	while (unlikely(atomic_xchg(&obj->reserved, 1) != 0)) {
+		if (no_wait)
+			return -EBUSY;
+		IPVR_DEBUG_GENERAL("wait bo unreserved, add to wait queue.\n");
+		ret = ipvr_bo_wait_unreserved(obj, interruptible);
+		if (unlikely(ret))
+			return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * ipvr_bo_unreserve - unreserve the given bo
+ *
+ * @obj:     The buffer object to reserve.
+ *
+ * No return value.
+ */
+void ipvr_bo_unreserve(struct drm_ipvr_gem_object *obj)
+{
+	atomic_set(&obj->reserved, 0);
+	wake_up_all(&obj->event_queue);
+}
+
+static void ipvr_backoff_reservation(struct list_head *list)
+{
+	struct ipvr_validate_buffer *entry;
+
+	list_for_each_entry(entry, list, head) {
+		struct drm_ipvr_gem_object *obj = entry->ipvr_gem_bo;
+		if (!atomic_read(&obj->reserved))
+			continue;
+		atomic_set(&obj->reserved, 0);
+		wake_up_all(&obj->event_queue);
+	}
+}
+
+/*
+ * ipvr_reserve_buffers - Reserve buffers for validation.
+ *
+ * @list:     points to a bo list to be backoffed
+ *
+ * If a buffer in the list is marked for CPU access, we back off and
+ * wait for that buffer to become free for VPU access.
+ *
+ * If a buffer is reserved for another validation, the validator with
+ * the highest validation sequence backs off and waits for that buffer
+ * to become unreserved. This prevents deadlocks when validating multiple
+ * buffers in different orders.
+ *
+ * Returns:
+ * 0 on success, error code on failure.
+ */
+int ipvr_reserve_buffers(struct list_head *list)
+{
+	struct ipvr_validate_buffer *entry;
+	int ret;
+
+	if (list_empty(list))
+		return 0;
+
+	list_for_each_entry(entry, list, head) {
+		struct drm_ipvr_gem_object *bo = entry->ipvr_gem_bo;
+
+		ret = ipvr_bo_reserve(bo, true, true);
+		switch (ret) {
+		case 0:
+			break;
+		case -EBUSY:
+			ret = ipvr_bo_reserve(bo, true, false);
+			if (!ret)
+				break;
+			else
+				goto err;
+		default:
+			goto err;
+		}
+	}
+
+	return 0;
+err:
+	ipvr_backoff_reservation(list);
+	return ret;
+}
+
+/**
+ * ipvr_set_tile - global setting of tiling info
+ *
+ * @dev:     the ipvr drm device
+ * @tiling_scheme:     see ipvr_drm.h for details
+ * @tiling_stride:     see ipvr_drm.h for details
+ *
+ * vxd392 hardware supports only one tile region so this configuration
+ * is global.
+ */
+void ipvr_set_tile(struct drm_ipvr_private *dev_priv,
+		u8 tiling_scheme, u8 tiling_stride)
+{
+	u32 cmd;
+	u32 start = IPVR_MEM_MMU_TILING_START;
+	u32 end = IPVR_MEM_MMU_TILING_END;
+
+	/* Enable memory tiling */
+	cmd = ((start >> 20) + (((end >> 20) - 1) << 12) +
+				((0x8 | tiling_stride) << 24));
+	IPVR_DEBUG_GENERAL("VED: MMU Tiling register0 %08x.\n", cmd);
+	IPVR_DEBUG_GENERAL("Region 0x%08x-0x%08x.\n", start, end);
+	IPVR_REG_WRITE32(cmd, MSVDX_MMU_TILE_BASE0_OFFSET);
+
+	/* we need set tile format as 512x8 on Baytrail, which is shceme 1 */
+	IPVR_REG_WRITE32(tiling_scheme << 3, MSVDX_MMU_CONTROL2_OFFSET);
+}
+
+/**
+ * ipvr_find_ctx_with_fence - lookup the context with given fence seqno
+ *
+ * @dev_priv:     the ipvr drm device
+ * @fence:     fence seqno generated by the context
+ *
+ * Returns:
+ * context pointer if found.
+ * NULL if not found.
+ */
+struct ipvr_context*
+ipvr_find_ctx_with_fence(struct drm_ipvr_private *dev_priv, u16 fence)
+{
+	struct ipvr_context *pos;
+	int id = 0;
+
+	spin_lock(&dev_priv->ipvr_ctx_lock);
+	idr_for_each_entry(&dev_priv->ipvr_ctx_idr, pos, id) {
+		if (pos->cur_seq == fence) {
+			spin_unlock(&dev_priv->ipvr_ctx_lock);
+			return pos;
+		}
+	}
+	spin_unlock(&dev_priv->ipvr_ctx_lock);
+
+	return NULL;
+}
+
+static void ipvr_unreference_buffers(struct ipvr_validate_context *context)
+{
+	struct ipvr_validate_buffer *entry, *next;
+	struct drm_ipvr_gem_object *obj;
+	struct list_head *list = &context->validate_list;
+
+	list_for_each_entry_safe(entry, next, list, head) {
+		obj = entry->ipvr_gem_bo;
+		list_del(&entry->head);
+		drm_gem_object_unreference_unlocked(&obj->base);
+		context->used_buffers--;
+	}
+}
+
+static int ipvr_update_buffers(struct drm_file *file_priv,
+					struct ipvr_validate_context *context,
+					u64 buffer_list,
+					int count)
+{
+	struct ipvr_validate_buffer *entry;
+	struct drm_ipvr_gem_exec_object __user *val_arg
+		= (struct drm_ipvr_gem_exec_object __user *)(uintptr_t)buffer_list;
+
+	if (list_empty(&context->validate_list))
+		return 0;
+
+	list_for_each_entry(entry, &context->validate_list, head) {
+		if (!val_arg) {
+			IPVR_DEBUG_WARN("unexpected end of val_arg list!!!\n");
+			return -EINVAL;
+		}
+		if (unlikely(copy_to_user(val_arg, &entry->val_req,
+					    sizeof(entry->val_req)))) {
+			IPVR_ERROR("copy_to_user fault.\n");
+			return -EFAULT;
+		}
+		val_arg ++;
+	}
+	return 0;
+}
+
+static int ipvr_reference_buffers(struct drm_file *file_priv,
+					struct ipvr_validate_context *context,
+					u64 buffer_list,
+					int count)
+{
+	struct drm_device *dev = file_priv->minor->dev;
+	struct drm_ipvr_gem_exec_object __user *val_arg
+		= (struct drm_ipvr_gem_exec_object __user *)(uintptr_t)buffer_list;
+	struct ipvr_validate_buffer *item;
+	struct drm_ipvr_gem_object *obj;
+	int ret = 0;
+	int i = 0;
+
+	for (i = 0; i < count; ++i) {
+		if (unlikely(context->used_buffers >= IPVR_NUM_VALIDATE_BUFFERS)) {
+			IPVR_ERROR("Too many buffers on validate list.\n");
+			ret = -EINVAL;
+			goto out_err;
+		}
+		item = &context->buffers[context->used_buffers];
+		if (unlikely(copy_from_user(&item->val_req, val_arg,
+					    sizeof(item->val_req)) != 0)) {
+			IPVR_ERROR("copy_from_user fault.\n");
+			ret = -EFAULT;
+			goto out_err;
+		}
+		INIT_LIST_HEAD(&item->head);
+		obj = to_ipvr_bo(drm_gem_object_lookup(dev, file_priv,
+						item->val_req.handle));
+		if (&obj->base == NULL) {
+			IPVR_ERROR("cannot find obj for handle %u at position %d.\n",
+				item->val_req.handle, i);
+			ret = -ENOENT;
+			goto out_err;
+		}
+		item->ipvr_gem_bo = obj;
+
+		list_add_tail(&item->head, &context->validate_list);
+		context->used_buffers++;
+
+		val_arg++;
+	}
+
+	return 0;
+
+out_err:
+	ipvr_unreference_buffers(context);
+	return ret;
+}
+
+static int ipvr_fixup_reloc_entries(struct drm_device *dev,
+					struct drm_file *filp,
+					struct ipvr_validate_buffer *val_obj)
+{
+	int i, ret;
+	u64 mmu_offset;
+	struct drm_ipvr_gem_object *obj, *target_obj;
+	struct drm_ipvr_gem_exec_object *exec_obj = &val_obj->val_req;
+	struct drm_ipvr_gem_relocation_entry __user *reloc_entries
+		= (struct drm_ipvr_gem_relocation_entry __user *)(uintptr_t)exec_obj->relocs_ptr;
+	struct drm_ipvr_gem_relocation_entry local_reloc_entry;
+
+	obj = val_obj->ipvr_gem_bo;
+	if (!obj)
+		return -ENOENT;
+
+	/* todo: check write access */
+
+	/* overwrite user content and update relocation entries */
+	mmu_offset = ipvr_gem_object_mmu_offset(obj);
+	if (mmu_offset != exec_obj->offset) {
+		exec_obj->offset = mmu_offset;
+		IPVR_DEBUG_GENERAL("Fixup BO %u offset to 0x%llx\n",
+			exec_obj->handle, exec_obj->offset);
+	}
+	for (i = 0; i < exec_obj->relocation_count; ++i) {
+		if (unlikely(copy_from_user(&local_reloc_entry, &reloc_entries[i],
+					    sizeof(local_reloc_entry)) != 0)) {
+			IPVR_ERROR("copy_from_user fault.\n");
+			return -EFAULT;
+		}
+		target_obj = to_ipvr_bo(drm_gem_object_lookup(dev, filp,
+						local_reloc_entry.target_handle));
+		if (&target_obj->base == NULL) {
+			IPVR_ERROR("cannot find obj for handle %u at position %d.\n",
+				local_reloc_entry.target_handle, i);
+			return -ENOENT;
+		}
+		ret = ipvr_gem_object_apply_reloc(obj,
+				local_reloc_entry.offset,
+				local_reloc_entry.delta + ipvr_gem_object_mmu_offset(target_obj));
+		if (ret) {
+			IPVR_ERROR("Failed applying reloc: %d\n", ret);
+			drm_gem_object_unreference_unlocked(&target_obj->base);
+			return ret;
+		}
+		if (unlikely(copy_to_user(&reloc_entries[i], &local_reloc_entry,
+						sizeof(local_reloc_entry)) != 0)) {
+			IPVR_DEBUG_WARN("copy_to_user fault.\n");
+		}
+		IPVR_DEBUG_GENERAL("Fixup offset %llx in BO %u to 0x%lx\n",
+			local_reloc_entry.offset, exec_obj->handle,
+			local_reloc_entry.delta + ipvr_gem_object_mmu_offset(target_obj));
+		drm_gem_object_unreference_unlocked(&target_obj->base);
+	}
+	return 0;
+}
+
+static int ipvr_fixup_relocs(struct drm_device *dev,
+					struct drm_file *filp,
+					struct ipvr_validate_context *context)
+{
+	int ret;
+	struct ipvr_validate_buffer *entry;
+
+	if (list_empty(&context->validate_list)) {
+		IPVR_DEBUG_WARN("No relocs required in validate contex, skip\n");
+		return 0;
+	}
+
+	list_for_each_entry(entry, &context->validate_list, head) {
+		IPVR_DEBUG_GENERAL("Fixing up reloc for BO handle %u\n",
+			entry->val_req.handle);
+		ret = ipvr_fixup_reloc_entries(dev, filp, entry);
+		if (ret) {
+			IPVR_ERROR("Failed to fixup reloc for BO handle %u\n",
+				entry->val_req.handle);
+			return ret;
+		}
+	}
+	return 0;
+}
+
+static int ipvr_validate_buffer_list(struct drm_file *file_priv,
+					struct ipvr_validate_context *context,
+					bool *need_fixup_relocs,
+					struct drm_ipvr_gem_object **cmd_buffer)
+{
+	struct ipvr_validate_buffer *entry;
+	struct drm_ipvr_gem_object *obj;
+	struct list_head *list = &context->validate_list;
+	int ret = 0;
+	u64 real_mmu_offset;
+
+	list_for_each_entry(entry, list, head) {
+		obj = entry->ipvr_gem_bo;
+		/**
+		 * need validate bo locate in the mmu space
+		 * check if presumed offset is correct
+		 * with ved_check_presumed, if presume is not correct,
+		 * call fixup relocs with ved_fixup_relocs.
+		 * current implementation doesn't support shrink/evict,
+		 * so needn't validate mmu offset.
+		 * need be implemented in the future if shrink/evict
+		 * is supported.
+		 */
+		real_mmu_offset = ipvr_gem_object_mmu_offset(obj);
+		if (IPVR_IS_ERR(real_mmu_offset))
+			return -ENOENT;
+		if (entry->val_req.offset != real_mmu_offset) {
+			IPVR_DEBUG_GENERAL("BO %u offset doesn't match MMU, need fixup reloc\n", entry->val_req.handle);
+			*need_fixup_relocs = true;
+		}
+		if (entry->val_req.flags & IPVR_EXEC_OBJECT_SUBMIT) {
+			if (*cmd_buffer != NULL) {
+				IPVR_ERROR("Only one BO can be submitted in one exec ioctl\n");
+				return -EINVAL;
+			}
+			*cmd_buffer = obj;
+		}
+	}
+
+	return ret;
+}
+
+/**
+ * ipvr_gem_do_execbuffer - lookup the context with given fence seqno
+ *
+ * @dev:     the ipvr drm device
+ * @file_priv:      the ipvr drm file pointer
+ * @args:      input argument passed from userland
+ * @vm:      ipvr address space for all the bo to bind to
+ *
+ * Returns: 0 on success, error code on failure
+ */
+static int ipvr_gem_do_execbuffer(struct drm_device *dev,
+					struct drm_file *file_priv,
+					struct drm_ipvr_gem_execbuffer *args,
+					struct ipvr_address_space *vm)
+{
+	drm_ipvr_private_t *dev_priv = dev->dev_private;
+	struct ipvr_validate_context *context = &dev_priv->validate_ctx;
+	struct ved_private *ved_priv = dev_priv->ved_private;
+	struct drm_ipvr_gem_object *cmd_buffer = NULL;
+	struct ipvr_context *ipvr_ctx  = NULL;
+	int ret, ctx_id;
+	bool need_fixup_relocs = false;
+
+	/* if not pass 0, use default context instead */
+	if (args->ctx_id == 0)
+		ctx_id = dev_priv->default_ctx.ctx_id;
+	else
+		ctx_id = args->ctx_id;
+
+	IPVR_DEBUG_GENERAL("try to find ctx according ctx_id %d.\n", ctx_id);
+
+	/* we're already in struct_mutex lock */
+	ipvr_ctx = (struct ipvr_context *)
+			idr_find(&dev_priv->ipvr_ctx_idr, ctx_id);
+	if (!ipvr_ctx) {
+		IPVR_DEBUG_WARN("video ctx is not found.\n");
+		return -ENOENT;
+	}
+
+	IPVR_DEBUG_GENERAL("reference all buffers passed through buffer_list.\n");
+	ret = ipvr_reference_buffers(file_priv, context,
+				args->buffers_ptr, args->buffer_count);
+	if (unlikely(ret)) {
+		IPVR_DEBUG_WARN("reference buffer failed: %d.\n", ret);
+		return ret;
+	}
+
+	IPVR_DEBUG_GENERAL("reserve all buffers to make them not accessed "
+			"by other threads.\n");
+	ret = ipvr_reserve_buffers(&context->validate_list);
+	if (unlikely(ret)) {
+		IPVR_ERROR("reserve buffers failed.\n");
+		/* -EBUSY or -ERESTARTSYS */
+		goto out_unref_buf;
+	}
+
+	IPVR_DEBUG_GENERAL("validate buffer list, mainly check "
+			"the bo mmu offset.\n");
+	ret = ipvr_validate_buffer_list(file_priv, context, &need_fixup_relocs, &cmd_buffer);
+	if (unlikely(ret)) {
+		IPVR_ERROR("validate buffers failed: %d.\n", ret);
+		goto out_backoff_reserv;
+	}
+
+	if (unlikely(cmd_buffer == NULL)) {
+		IPVR_ERROR("No cmd BO found.\n");
+		ret = -EINVAL;
+		goto out_backoff_reserv;
+	}
+
+	if (unlikely(need_fixup_relocs)) {
+		ret = ipvr_fixup_relocs(dev, file_priv, context);
+		if (ret) {
+			IPVR_ERROR("fixup relocs failed.\n");
+			goto out_backoff_reserv;
+		}
+	}
+
+#if 0
+	bo = idr_find(&file_priv->object_idr, args->cmdbuf_handle);
+	if (!bo) {
+		IPVR_DEBUG_WARN("Invalid cmd object handle 0x%x.\n",
+			args->cmdbuf_handle);
+		ret = -EINVAL;
+		goto out_backoff_reserv;
+	}
+
+	cmd_buffer = to_ipvr_bo(bo);
+#endif
+	/**
+	 * check contex id and type
+	 */
+	/*
+	 * only VED is supported currently
+	 */
+	if (ipvr_ctx->ctx_type == IPVR_CONTEXT_TYPE_VED)
+	{
+		/* fixme: should support non-zero start_offset */
+		if (unlikely(args->exec_start_offset != 0)) {
+			IPVR_ERROR("Unsupported exec_start_offset %u\n", args->exec_start_offset);
+			ret = -EINVAL;
+			goto out_backoff_reserv;
+		}
+
+		ret = mutex_lock_interruptible(&ved_priv->ved_mutex);
+		if (unlikely(ret)) {
+			IPVR_ERROR("Error get VED mutex: %d\n", ret);
+			/* -EINTR */
+			goto out_backoff_reserv;
+		}
+
+		IPVR_DEBUG_GENERAL("parse cmd buffer and send to VED.\n");
+		ret = ved_cmdbuf_video(ved_priv, cmd_buffer,
+				args->exec_len, ipvr_ctx );
+		if (unlikely(ret)) {
+			IPVR_ERROR("ved_cmdbuf_video returns %d.\n", ret);
+			/* -EINVAL, -ENOMEM, -EFAULT, -EBUSY */
+			mutex_unlock(&ved_priv->ved_mutex);
+			goto out_backoff_reserv;
+		}
+
+		mutex_unlock(&ved_priv->ved_mutex);
+	}
+
+	/**
+	 * update mmu_offsets and fence fds to user
+	 */
+	ret = ipvr_update_buffers(file_priv, context,
+				args->buffers_ptr, args->buffer_count);
+	if (unlikely(ret)) {
+		IPVR_DEBUG_WARN("ipvr_update_buffers returns error %d.\n", ret);
+		ret = 0;
+	}
+
+out_backoff_reserv:
+	IPVR_DEBUG_GENERAL("unreserve buffer list.\n");
+	ipvr_backoff_reservation(&context->validate_list);
+out_unref_buf:
+	IPVR_DEBUG_GENERAL("unref bufs which are refered during bo lookup.\n");
+	ipvr_unreference_buffers(context);
+	return ret;
+}
+
+/**
+ * ipvr_gem_do_execbuffer - lookup the context with given fence seqno
+ *
+ * ioctl entry for DRM_IPVR_GEM_EXECBUFFER
+ *
+ * Returns: 0 on success, error code on failure
+ */
+int ipvr_gem_execbuffer_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *file_priv)
+{
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	struct drm_ipvr_gem_execbuffer *args = data;
+	int ret;
+	struct ipvr_validate_context *context = &dev_priv->validate_ctx;
+
+	ret = mutex_lock_interruptible(&dev->struct_mutex);
+	if (ret)
+		return ret;
+
+	if (!context || !context->buffers) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	context->used_buffers = 0;
+
+	if (args->buffer_count < 1 ||
+		args->buffer_count >
+			(UINT_MAX / sizeof(struct ipvr_validate_buffer))) {
+		IPVR_ERROR("validate %d buffers.\n", args->buffer_count);
+		ret = -EINVAL;
+		goto out;
+	}
+
+	trace_ipvr_execbuffer(args);
+	ret = ipvr_gem_do_execbuffer(dev, file_priv, args,
+				    &dev_priv->addr_space);
+out:
+	mutex_unlock(&dev->struct_mutex);
+	return ret;
+}
diff --git a/drivers/gpu/drm/ipvr/ipvr_exec.h b/drivers/gpu/drm/ipvr/ipvr_exec.h
new file mode 100644
index 0000000..cd174a8
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_exec.h
@@ -0,0 +1,57 @@
+/**************************************************************************
+ * ipvr_exec.h: IPVR header file for command buffer execution
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _IPVR_EXEC_H_
+#define _IPVR_EXEC_H_
+
+#include "ipvr_drv.h"
+#include "ipvr_drm.h"
+#include "ipvr_gem.h"
+#include "ipvr_fence.h"
+
+struct drm_ipvr_private;
+
+#define IPVR_NUM_VALIDATE_BUFFERS 2048
+#define IPVR_MAX_RELOC_PAGES 1024
+
+struct ipvr_validate_buffer {
+	struct drm_ipvr_gem_exec_object val_req;
+	struct list_head head;
+	struct drm_ipvr_gem_object *ipvr_gem_bo;
+	struct ipvr_fence *old_fence;
+};
+
+int ipvr_bo_reserve(struct drm_ipvr_gem_object *obj,
+			bool interruptible, bool no_wait);
+
+void ipvr_bo_unreserve(struct drm_ipvr_gem_object *obj);
+
+struct ipvr_context*
+ipvr_find_ctx_with_fence(struct drm_ipvr_private *dev_priv, u16 fence);
+
+void ipvr_set_tile(struct drm_ipvr_private *dev_priv,
+			u8 tiling_scheme, u8 tiling_stride);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_fence.c b/drivers/gpu/drm/ipvr/ipvr_fence.c
new file mode 100644
index 0000000..ef8212a
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_fence.c
@@ -0,0 +1,487 @@
+/**************************************************************************
+ * ipvr_fence.c: IPVR fence handling to track command exectuion status
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_fence.h"
+#include "ipvr_exec.h"
+#include "ipvr_bo.h"
+#include "ipvr_trace.h"
+#include "ved_reg.h"
+#include "ved_fw.h"
+#include "ved_cmd.h"
+#include <linux/debugfs.h>
+#include <linux/export.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/anon_inodes.h>
+
+/**
+ * ipvr_fence_create - create and init a fence
+ *
+ * @dev_priv: drm_ipvr_private pointer
+ * @fence: ipvr fence object
+ * @fence_fd: file descriptor for exporting fence
+ *
+ * Create a fence, actually the fence is written to ipvr through msg.
+ * exporting a new file descriptor to userspace.
+ * Returns pointer on success, ERR_PTR otherwise.
+ */
+struct ipvr_fence* __must_check
+ipvr_fence_create(struct drm_ipvr_private *dev_priv)
+{
+	struct ipvr_fence *fence;
+	unsigned long irq_flags;
+	u16 old_seq;
+	struct ved_private *ved_priv;
+
+	ved_priv = dev_priv->ved_private;
+
+	fence = kzalloc(sizeof(struct ipvr_fence), GFP_KERNEL);
+	if (!fence) {
+		fence = ERR_PTR(-ENOMEM);
+		goto out;
+	}
+
+	kref_init(&fence->kref);
+	fence->dev_priv = dev_priv;
+
+	spin_lock_irqsave(&dev_priv->fence_drv.fence_lock, irq_flags);
+	/* cmds in one batch use different fence value */
+	old_seq = dev_priv->fence_drv.sync_seq;
+	dev_priv->fence_drv.sync_seq = dev_priv->last_seq++;
+	dev_priv->fence_drv.sync_seq <<= 4;
+	fence->seq = dev_priv->fence_drv.sync_seq;
+
+	spin_unlock_irqrestore(&dev_priv->fence_drv.fence_lock, irq_flags);
+
+	kref_get(&fence->kref);
+	IPVR_DEBUG_GENERAL("fence is created and its seq is %u (0x%04x).\n",
+		fence->seq, fence->seq);
+out:
+	return fence;
+}
+
+/**
+ * ipvr_fence_destroy - destroy a fence
+ *
+ * @kref: fence kref
+ *
+ * Frees the fence object (all asics).
+ */
+static void ipvr_fence_destroy(struct kref *kref)
+{
+	struct ipvr_fence *fence;
+
+	fence = container_of(kref, struct ipvr_fence, kref);
+	kfree(fence);
+}
+
+/**
+ * ipvr_fence_process - process a fence
+ *
+ * @dev_priv: drm_ipvr_private pointer
+ * @seq: indicate the fence seq has been signaled
+ * @err: indicate if err happened, for future use
+ *
+ * Checks the current fence value and wakes the fence queue
+ * if the sequence number has increased (all asics).
+ */
+void ipvr_fence_process(struct drm_ipvr_private *dev_priv, u16 seq, u8 err)
+{
+	int signaled_seq_int;
+	u16 signaled_seq;
+	u16 last_emitted;
+
+	signaled_seq_int = atomic_read(&dev_priv->fence_drv.signaled_seq);
+	signaled_seq = (u16)signaled_seq_int;
+	last_emitted = dev_priv->fence_drv.sync_seq;
+
+	if (ipvr_seq_after(seq, last_emitted)) {
+		IPVR_DEBUG_WARN("seq error, seq is %u, signaled_seq is %u, "
+				"last_emitted is %u.\n",
+				seq, signaled_seq, last_emitted);
+		return;
+	}
+	if (ipvr_seq_after(seq, signaled_seq)) {
+		atomic_xchg(&dev_priv->fence_drv.signaled_seq, seq);
+		dev_priv->fence_drv.last_activity = jiffies;
+		IPVR_DEBUG_GENERAL("last emitted seq %u is updated.\n", seq);
+		wake_up_all(&dev_priv->fence_queue);
+	}
+}
+
+/**
+ * ipvr_fence_signaled - check if a fence sequeuce number has signaled
+ *
+ * @dev_priv: ipvr device pointer
+ * @seq: sequence number
+ *
+ * Check if the last singled fence sequnce number is >= the requested
+ * sequence number (all asics).
+ * Returns true if the fence has signaled (current fence value
+ * is >= requested value) or false if it has not (current fence
+ * value is < the requested value.
+ */
+static bool ipvr_fence_signaled(struct drm_ipvr_private *dev_priv, u16 seq)
+{
+	u16 curr_seq, signaled_seq;
+	unsigned long irq_flags;
+	spin_lock_irqsave(&dev_priv->fence_drv.fence_lock, irq_flags);
+	curr_seq = dev_priv->ved_private->ved_cur_seq;
+	signaled_seq = atomic_read(&dev_priv->fence_drv.signaled_seq);
+
+	if (ipvr_seq_after(seq, signaled_seq)) {
+		/* poll new last sequence at least once */
+		ipvr_fence_process(dev_priv, curr_seq, IPVR_CMD_SUCCESS);
+		signaled_seq = atomic_read(&dev_priv->fence_drv.signaled_seq);
+		if (ipvr_seq_after(seq, signaled_seq)) {
+			spin_unlock_irqrestore(&dev_priv->fence_drv.fence_lock,
+						irq_flags);
+			return false;
+		}
+	}
+	spin_unlock_irqrestore(&dev_priv->fence_drv.fence_lock, irq_flags);
+	return true;
+}
+
+/**
+ * ipvr_fence_lockup - ipvr lockup is detected
+ *
+ * @dev_priv: ipvr device pointer
+ * @fence: lockup detected when wait the specific fence
+ *
+ * During the calling of ipvr_fence_wait, if wait to timeout,
+ * indicate lockup happened, need flush cmd queue and reset ved
+ * If ipvr_fence_wait_empty_locked encounter lockup, fence is NULL
+ */
+static void
+ipvr_fence_lockup(struct drm_ipvr_private *dev_priv, struct ipvr_fence *fence)
+{
+	unsigned long irq_flags;
+	struct ved_private *ved_priv = dev_priv->ved_private;
+
+	IPVR_DEBUG_WARN("timeout detected, flush queued cmd, maybe lockup.\n");
+	IPVR_DEBUG_WARN("MSVDX_COMMS_FW_STATUS reg is 0x%x.\n",
+			IPVR_REG_READ32(MSVDX_COMMS_FW_STATUS));
+
+	if (fence) {
+		spin_lock_irqsave(&dev_priv->fence_drv.fence_lock, irq_flags);
+		ipvr_fence_process(dev_priv, fence->seq, IPVR_CMD_LOCKUP);
+		spin_unlock_irqrestore(&dev_priv->fence_drv.fence_lock, irq_flags);
+	}
+
+	/* should behave according to ctx type in the future */
+	ved_flush_cmd_queue(dev_priv->ved_private);
+	ipvr_runtime_pm_put_all(dev_priv, false);
+
+	ved_priv->ved_needs_reset = 1;
+}
+
+/**
+ * ipvr_fence_wait_seq - wait for a specific sequence number
+ *
+ * @dev_priv: ipvr device pointer
+ * @target_seq: sequence number we want to wait for
+ * @intr: use interruptable sleep
+ *
+ * Wait for the requested sequence number to be written.
+ * @intr selects whether to use interruptable (true) or non-interruptable
+ * (false) sleep when waiting for the sequence number.
+ * Returns 0 if the sequence number has passed, error for all other cases.
+ * -EDEADLK is returned when a VPU lockup has been detected.
+ */
+static int ipvr_fence_wait_seq(struct drm_ipvr_private *dev_priv,
+					u16 target_seq, bool intr)
+{
+	struct ipvr_fence_driver	*fence_drv = &dev_priv->fence_drv;
+	unsigned long timeout, last_activity;
+	u16 signaled_seq;
+	int ret;
+	unsigned long irq_flags;
+	bool signaled;
+	spin_lock_irqsave(&dev_priv->fence_drv.fence_lock, irq_flags);
+
+	while (ipvr_seq_after(target_seq,
+			(u16)atomic_read(&fence_drv->signaled_seq))) {
+		/* seems the fence_drv->last_activity is useless? */
+		timeout = IPVR_FENCE_JIFFIES_TIMEOUT;
+		signaled_seq = atomic_read(&fence_drv->signaled_seq);
+		/* save last activity valuee, used to check for VPU lockups */
+		last_activity = fence_drv->last_activity;
+
+		spin_unlock_irqrestore(&dev_priv->fence_drv.fence_lock, irq_flags);
+		if (intr) {
+			ret = wait_event_interruptible_timeout(
+				dev_priv->fence_queue,
+				(signaled = ipvr_fence_signaled(dev_priv, target_seq)),
+				timeout);
+		} else {
+			ret = wait_event_timeout(
+				dev_priv->fence_queue,
+				(signaled = ipvr_fence_signaled(dev_priv, target_seq)),
+				timeout);
+		}
+		spin_lock_irqsave(&dev_priv->fence_drv.fence_lock, irq_flags);
+
+		if (unlikely(!signaled)) {
+			/* we were interrupted for some reason and fence
+			 * isn't signaled yet, resume waiting until timeout  */
+			if (unlikely(ret < 0)) {
+				/* should return -ERESTARTSYS,
+				 * interrupted by a signal */
+				continue;
+			}
+
+			/* check if sequence value has changed since
+			 * last_activity */
+			if (signaled_seq !=
+				atomic_read(&fence_drv->signaled_seq)) {
+				continue;
+			}
+
+			if (last_activity != fence_drv->last_activity) {
+				continue;
+			}
+
+			/* lockup happen, it is better have some reg to check */
+			IPVR_DEBUG_WARN("VPU lockup (waiting for 0x%0x last "
+					"signaled fence id 0x%x).\n",
+					target_seq, signaled_seq);
+
+			/* change last activity so nobody else
+			 * think there is a lockup */
+			fence_drv->last_activity = jiffies;
+			spin_unlock_irqrestore(&dev_priv->fence_drv.fence_lock,
+					irq_flags);
+			return -EDEADLK;
+
+		}
+	}
+	spin_unlock_irqrestore(&dev_priv->fence_drv.fence_lock, irq_flags);
+	return 0;
+}
+
+/**
+ * ipvr_fence_wait - wait for a fence to signal
+ *
+ * @fence: ipvr fence object
+ * @intr: use interruptable sleep
+ * @no_wait: not signaled, if need add into wait queue
+ *
+ * Wait for the requested fence to signal (all asics).
+ * @intr selects whether to use interruptable (true) or non-interruptable
+ * (false) sleep when waiting for the fence.
+ * Returns 0 if the fence has passed, error for all other cases.
+ */
+int ipvr_fence_wait(struct ipvr_fence *fence, bool intr, bool no_wait)
+{
+	int ret;
+	struct drm_ipvr_private *dev_priv;
+
+	if (fence == NULL || fence->seq == IPVR_FENCE_SIGNALED_SEQ) {
+		IPVR_DEBUG_GENERAL("fence is NULL or has been singaled.\n");
+		return 0;
+	}
+	dev_priv = fence->dev_priv;
+
+	IPVR_DEBUG_GENERAL("wait fence seq %u, last signaled seq is %d, "
+			"last emitted seq is %u.\n", fence->seq,
+			atomic_read(&dev_priv->fence_drv.signaled_seq),
+			dev_priv->fence_drv.sync_seq);
+	if (!no_wait)
+		trace_ipvr_fence_wait_begin(fence,
+			atomic_read(&dev_priv->fence_drv.signaled_seq),
+			dev_priv->fence_drv.sync_seq);
+
+	if (ipvr_fence_signaled(dev_priv, fence->seq)) {
+		IPVR_DEBUG_GENERAL("fence has been signaled.\n");
+		/*
+		 * compare with ttm_bo_wait, don't need create a tmp_obj
+		 * it is better we also set bo->fence = NULL
+		 */
+		if (!no_wait)
+			trace_ipvr_fence_wait_end(fence,
+				atomic_read(&dev_priv->fence_drv.signaled_seq),
+				dev_priv->fence_drv.sync_seq);
+		fence->seq = IPVR_FENCE_SIGNALED_SEQ;
+		ipvr_fence_unref(&fence);
+		return 0;
+	}
+
+	if (no_wait)
+		return -EBUSY;
+
+	ret = ipvr_fence_wait_seq(dev_priv, fence->seq, intr);
+	if (ret) {
+		if (ret == -EDEADLK) {
+			trace_ipvr_fence_wait_lockup(fence,
+					atomic_read(&dev_priv->fence_drv.signaled_seq),
+					dev_priv->fence_drv.sync_seq);
+			ipvr_fence_lockup(dev_priv, fence);
+		}
+		return ret;
+	}
+	trace_ipvr_fence_wait_end(fence,
+			atomic_read(&dev_priv->fence_drv.signaled_seq),
+			dev_priv->fence_drv.sync_seq);
+	fence->seq = IPVR_FENCE_SIGNALED_SEQ;
+
+	return 0;
+}
+
+/**
+ * ipvr_fence_driver_init - init the fence driver
+ *
+ * @dev_priv: ipvr device pointer
+ *
+ * Init the fence driver, will not fail
+ */
+void ipvr_fence_driver_init(struct drm_ipvr_private *dev_priv)
+{
+	spin_lock_init(&dev_priv->fence_drv.fence_lock);
+	init_waitqueue_head(&dev_priv->fence_queue);
+	dev_priv->fence_drv.sync_seq = 0;
+	atomic_set(&dev_priv->fence_drv.signaled_seq, 0);
+	dev_priv->fence_drv.last_activity = jiffies;
+	dev_priv->fence_drv.initialized = false;
+}
+
+/**
+ * ipvr_fence_wait_empty_locked - wait for all fences to signal
+ *
+ * @dev_priv: ipvr device pointer
+ *
+ * Wait for all fences to be signalled.
+ */
+void ipvr_fence_wait_empty_locked(struct drm_ipvr_private *dev_priv)
+{
+	u16 seq;
+
+	seq = dev_priv->fence_drv.sync_seq;
+
+	while(1) {
+		int ret;
+		ret = ipvr_fence_wait_seq(dev_priv, seq, false);
+		if (ret == 0) {
+			return;
+		} else if (ret == -EDEADLK) {
+			ipvr_fence_lockup(dev_priv, NULL);
+			IPVR_DEBUG_WARN("Lockup found waiting for seq %d.\n",
+					seq);
+			return;
+		} else {
+			continue;
+		}
+	}
+}
+
+/**
+ * ipvr_fence_driver_fini - tear down the fence driver
+ * for all possible rings.
+ *
+ * @dev_priv: ipvr device pointer
+ *
+ * Tear down the fence driver for all possible rings (all asics).
+ */
+void ipvr_fence_driver_fini(struct drm_ipvr_private *dev_priv)
+{
+	if (!dev_priv->fence_drv.initialized)
+		return;
+	ipvr_fence_wait_empty_locked(dev_priv);
+	wake_up_all(&dev_priv->fence_queue);
+	dev_priv->fence_drv.initialized = false;
+}
+
+/**
+ * ipvr_fence_ref - take a ref on a fence
+ *
+ * @fence: fence object
+ *
+ * Take a reference on a fence (all asics).
+ * Returns the fence.
+ */
+struct ipvr_fence *ipvr_fence_ref(struct ipvr_fence *fence)
+{
+	kref_get(&fence->kref);
+	return fence;
+}
+
+/**
+ * ipvr_fence_unref - remove a ref on a fence
+ *
+ * @fence: ipvr fence object
+ *
+ * Remove a reference on a fence, if ref == 0, destory the fence.
+ */
+void ipvr_fence_unref(struct ipvr_fence **fence)
+{
+	struct ipvr_fence *tmp = *fence;
+
+	*fence = NULL;
+	if (tmp) {
+		kref_put(&tmp->kref, &ipvr_fence_destroy);
+	}
+}
+
+/**
+ * ipvr_fence_buffer_objects - bind fence to buffer list
+ *
+ * @list: validation buffer list
+ * @fence: ipvr fence object
+ *
+ * bind a fence to all obj in the validation list
+ */
+void
+ipvr_fence_buffer_objects(struct list_head *list, struct ipvr_fence *fence)
+{
+	struct ipvr_validate_buffer *entry;
+	struct drm_ipvr_gem_object *obj;
+
+	if (list_empty(list))
+		return;
+
+	list_for_each_entry(entry, list, head) {
+		obj = entry->ipvr_gem_bo;
+		/**
+		 * do not update fence if val_args specifies so
+		 */
+		if (entry->val_req.flags & IPVR_EXEC_OBJECT_NEED_FENCE) {
+			entry->old_fence = obj->fence;
+			obj->fence = ipvr_fence_ref(fence);
+			if (entry->old_fence)
+				ipvr_fence_unref(&entry->old_fence);
+		}
+		else {
+			IPVR_DEBUG_GENERAL("obj 0x%lx marked as non-fence\n",
+				ipvr_gem_object_mmu_offset(obj));
+		}
+		ipvr_bo_unreserve(obj);
+	}
+}
diff --git a/drivers/gpu/drm/ipvr/ipvr_fence.h b/drivers/gpu/drm/ipvr/ipvr_fence.h
new file mode 100644
index 0000000..91c1bc6
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_fence.h
@@ -0,0 +1,72 @@
+/**************************************************************************
+ * ipvr_fence.h: IPVR header file for fence handling
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _IPVR_FENCE_H_
+#define _IPVR_FENCE_H_
+
+#include "ipvr_drv.h"
+
+/* seq_after(a,b) returns true if the seq a is after seq b.*/
+#define ipvr_seq_after(a,b) \
+    (typecheck(u16, a) && \
+     typecheck(u16, b) && \
+     ((s16)(a - b) > 0))
+
+enum ipvr_cmd_status {
+   IPVR_CMD_SUCCESS,
+   IPVR_CMD_FAILED,
+   IPVR_CMD_LOCKUP,
+   IPVR_CMD_SKIP
+};
+
+#define IPVR_FENCE_JIFFIES_TIMEOUT		(HZ / 2)
+/* fence seq are set to this number when signaled */
+#define IPVR_FENCE_SIGNALED_SEQ		0LL
+
+struct ipvr_fence {
+	struct drm_ipvr_private *dev_priv;
+	struct kref kref;
+	/* protected by dev_priv->fence_drv.fence_lock */
+	u16 seq;
+	char name[32];
+};
+
+int ipvr_fence_wait(struct ipvr_fence *fence, bool intr, bool no_wait);
+
+void ipvr_fence_process(struct drm_ipvr_private *dev_priv, u16 seq, u8 err);
+
+void ipvr_fence_driver_init(struct drm_ipvr_private *dev_priv);
+
+void ipvr_fence_driver_fini(struct drm_ipvr_private *dev_priv);
+
+struct ipvr_fence* __must_check ipvr_fence_create(struct drm_ipvr_private *dev_priv);
+
+void ipvr_fence_buffer_objects(struct list_head *list, struct ipvr_fence *fence);
+
+void ipvr_fence_unref(struct ipvr_fence **fence);
+
+void ipvr_fence_wait_empty_locked(struct drm_ipvr_private *dev_priv);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_gem.c b/drivers/gpu/drm/ipvr/ipvr_gem.c
new file mode 100644
index 0000000..94c266a
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_gem.c
@@ -0,0 +1,297 @@
+/**************************************************************************
+ * ipvr_gem.c: IPVR hook file for gem ioctls
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_gem.h"
+#include "ipvr_bo.h"
+#include "ipvr_fence.h"
+#include "ipvr_exec.h"
+#include "ipvr_trace.h"
+#include <drm_gem.h>
+#include <linux/slab.h>
+#include <linux/swap.h>
+#include <linux/pci.h>
+#include <linux/dma-buf.h>
+
+#define VLV_IPVR_DEV_ID (0xf31)
+
+int
+ipvr_context_create_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv)
+{
+	struct drm_ipvr_context_create *args = data;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	struct drm_ipvr_file_private *fpriv = file_priv->driver_priv;
+	struct ipvr_context *ipvr_ctx  = NULL;
+	unsigned long irq_flags;
+	int ctx_id, ret = 0;
+
+	IPVR_DEBUG_ENTRY("enter\n");
+	/*
+	 * todo: only one tiling region is supported now,
+	 * maybe we need create additional tiling region for rotation case,
+	 * which has different tiling stride
+	 */
+	if (!(args->tiling_scheme == 0 && args->tiling_stride <= 3) &&
+		!(args->tiling_scheme == 1 && args->tiling_stride <= 2)) {
+		IPVR_DEBUG_WARN("unsupported tiling scheme %d and stide %d.\n",
+			args->tiling_scheme, args->tiling_stride);
+		return -EINVAL;
+	}
+	/* add video decode context */
+	ipvr_ctx = kzalloc(sizeof(struct ipvr_context), GFP_KERNEL);
+	if (ipvr_ctx  == NULL)
+		return -ENOMEM;
+
+	spin_lock_irqsave(&dev_priv->ipvr_ctx_lock, irq_flags);
+	ctx_id = idr_alloc(&dev_priv->ipvr_ctx_idr, ipvr_ctx ,
+			   IPVR_MIN_CONTEXT_ID, IPVR_MAX_CONTEXT_ID,
+			   GFP_NOWAIT);
+	if (ctx_id < 0) {
+		IPVR_ERROR("idr_alloc got %d, return ENOMEM\n", ctx_id);
+		spin_unlock_irqrestore(&dev_priv->ipvr_ctx_lock, irq_flags);
+		return -ENOMEM;
+	}
+	ipvr_ctx->ctx_id = ctx_id;
+
+	INIT_LIST_HEAD(&ipvr_ctx->head);
+	ipvr_ctx->ctx_type = args->ctx_type;
+	ipvr_ctx->ipvr_fpriv = file_priv->driver_priv;
+	list_add(&ipvr_ctx ->head, &fpriv->ctx_list);
+	spin_unlock_irqrestore(&dev_priv->ipvr_ctx_lock, irq_flags);
+	args->ctx_id = ctx_id;
+	IPVR_DEBUG_INIT("add ctx type 0x%x, ctx_id is %d.\n",
+			ipvr_ctx->ctx_type, ctx_id);
+
+	ipvr_ctx->tiling_scheme = args->tiling_scheme;
+	ipvr_ctx->tiling_stride = args->tiling_stride;
+
+	return ret;
+}
+
+int
+ipvr_context_destroy_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv)
+{
+	struct drm_ipvr_context_destroy *args = data;
+	struct ved_private *ved_priv;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	struct ipvr_context *ipvr_ctx  = NULL;
+	unsigned long irq_flags;
+
+	IPVR_DEBUG_ENTRY("enter\n");
+	spin_lock_irqsave(&dev_priv->ipvr_ctx_lock, irq_flags);
+	ved_priv = dev_priv->ved_private;
+	if (ved_priv && (!list_empty(&ved_priv->ved_queue)
+			|| (atomic_read(&dev_priv->pending_events) > 0))) {
+		IPVR_DEBUG_WARN("Destroying the context while pending cmds exist!\n");
+	}
+	ipvr_ctx = (struct ipvr_context *)
+			idr_find(&dev_priv->ipvr_ctx_idr, args->ctx_id);
+	if (!ipvr_ctx) {
+		IPVR_ERROR("can not find given context %u\n", args->ctx_id);
+		spin_unlock_irqrestore(&dev_priv->ipvr_ctx_lock, irq_flags);
+		return -EINVAL;
+	}
+
+	if (ipvr_ctx->ipvr_fpriv != file_priv->driver_priv) {
+		IPVR_ERROR("given contex %u doesn't belong to the file\n", args->ctx_id);
+		spin_unlock_irqrestore(&dev_priv->ipvr_ctx_lock, irq_flags);
+		return -ENOENT;
+	}
+
+	IPVR_DEBUG_GENERAL("Video:remove context %d type 0x%x\n",
+		ipvr_ctx->ctx_id, ipvr_ctx->ctx_type);
+	list_del(&ipvr_ctx->head);
+	idr_remove(&dev_priv->ipvr_ctx_idr, ipvr_ctx->ctx_id);
+	kfree(ipvr_ctx);
+	spin_unlock_irqrestore(&dev_priv->ipvr_ctx_lock, irq_flags);
+	return 0;
+}
+
+int
+ipvr_get_info_ioctl(struct drm_device *dev, void *data,
+			struct drm_file *file_priv)
+{
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	struct drm_ipvr_get_info *args = data;
+	int ret = 0;
+
+	IPVR_DEBUG_ENTRY("enter\n");
+	if (!dev_priv) {
+		IPVR_DEBUG_WARN("called with no initialization.\n");
+		return -ENODEV;
+	}
+	switch (args->key) {
+	case IPVR_DEVICE_INFO: {
+		/* only vlv supported now
+		 */
+		args->value = VLV_IPVR_DEV_ID << 16;
+		break;
+	}
+	default:
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+int ipvr_gem_create_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *file_priv)
+{
+	int ret;
+	struct drm_ipvr_gem_create *args = data;
+	struct drm_ipvr_gem_object *obj;
+	struct drm_ipvr_private *dev_priv = dev->dev_private;
+	if (args->cache_level >= IPVR_CACHE_MAX)
+		return -EINVAL;
+	if (args->size == 0)
+		return -EINVAL;
+	args->rounded_size = roundup(args->size, PAGE_SIZE);
+	obj = ipvr_gem_create(dev_priv, args->rounded_size, args->tiling,
+			      args->cache_level);
+	if (IS_ERR(obj)) {
+		ret = PTR_ERR(obj);
+		goto out;
+	}
+	args->mmu_offset = ipvr_gem_object_mmu_offset(obj);
+	/* create handle */
+	ret = drm_gem_handle_create(file_priv, &obj->base, &args->handle);
+	if (ret) {
+		IPVR_ERROR("could not allocate mmap offset: %d\n", ret);
+		goto out_free;
+	}
+	/* drop reference from allocate - handle holds it now */
+	drm_gem_object_unreference_unlocked(&obj->base);
+	/* create map offset */
+	ret = drm_gem_create_mmap_offset(&obj->base);
+	if (ret) {
+		IPVR_ERROR("could not allocate mmap offset: %d\n", ret);
+		goto out_free;
+	}
+	args->map_offset = drm_vma_node_offset_addr(&obj->base.vma_node);
+	IPVR_DEBUG_GENERAL("bo create done, handle: %u, vpu offset: 0x%llx.\n",
+		args->handle, args->mmu_offset);
+	return 0;
+out_free:
+	ipvr_gem_free_object(&obj->base);
+out:
+	return ret;
+}
+
+int ipvr_gem_busy_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *file_priv)
+{
+	struct drm_ipvr_gem_busy *args = data;
+	struct drm_ipvr_gem_object *obj;
+	int ret = 0;
+
+	obj = to_ipvr_bo(drm_gem_object_lookup(dev, file_priv, args->handle));
+	if (!obj || &obj->base == NULL) {
+		return -ENOENT;
+	}
+	IPVR_DEBUG_GENERAL("Checking bo %p (fence %p seq %u) busy status\n",
+        obj, obj->fence, ((obj->fence)? obj->fence->seq: 0));
+
+	ret = ipvr_bo_reserve(obj, true, false);
+	if (unlikely(ret != 0))
+		goto out;
+	ret = ipvr_fence_wait(obj->fence, true, true);
+	ipvr_bo_unreserve(obj);
+
+    args->busy = ret? 1: 0;
+out:
+	drm_gem_object_unreference_unlocked(&obj->base);
+	return ret;
+}
+
+/**
+ * ipvr_gem_wait_ioctl - implements DRM_IOCTL_IPVR_GEM_WAIT
+ * @DRM_IOCTL_ARGS: standard ioctl arguments
+ *
+ * Returns 0 if successful, else an error is returned with the remaining time in
+ * the timeout parameter.
+ *  -ETIME: object is still busy after timeout
+ *  -ERESTARTSYS: signal interrupted the wait
+ *  -ENONENT: object doesn't exist
+ * Also possible, but rare:
+ *  -EAGAIN: VPU wedged
+ *  -ENOMEM: damn
+ *  -ENODEV: Internal IRQ fail
+ *  -E?: The add request failed
+ *
+ * The wait ioctl with a timeout of 0 reimplements the busy ioctl. With any
+ * non-zero timeout parameter the wait ioctl will wait for the given number of
+ * nanoseconds on an object becoming unbusy. Since the wait itself does so
+ * without holding struct_mutex the object may become re-busied before this
+ * function completes. A similar but shorter * race condition exists in the busy
+ * ioctl
+ */
+int ipvr_gem_wait_ioctl(struct drm_device *dev,
+				void *data, struct drm_file *file_priv)
+{
+	struct drm_ipvr_gem_wait *args = data;
+	struct drm_ipvr_gem_object *obj;
+	int ret = 0;
+
+	IPVR_DEBUG_ENTRY("wait %d buffer to finish execution.\n", args->handle);
+	obj = to_ipvr_bo(drm_gem_object_lookup(dev, file_priv, args->handle));
+	if (&obj->base == NULL) {
+		return -ENOENT;
+	}
+
+	ret = ipvr_bo_reserve(obj, true, false);
+	if (unlikely(ret != 0))
+		goto out;
+
+	ret = ipvr_fence_wait(obj->fence, true, false);
+
+	ipvr_bo_unreserve(obj);
+
+out:
+	drm_gem_object_unreference_unlocked(&obj->base);
+	return ret;
+}
+
+int ipvr_gem_mmap_offset_ioctl(struct drm_device *dev,
+				void *data, struct drm_file *file_priv)
+{
+	int ret = 0;
+	struct drm_ipvr_gem_mmap_offset *args = data;
+	struct drm_ipvr_gem_object *obj;
+
+	IPVR_DEBUG_ENTRY("getting mmap offset for BO %u.\n", args->handle);
+	obj = to_ipvr_bo(drm_gem_object_lookup(dev, file_priv, args->handle));
+
+	/* create map offset */
+	ret = drm_gem_create_mmap_offset(&obj->base);
+	if (ret) {
+		IPVR_ERROR("could not allocate mmap offset: %d\n", ret);
+		goto out;
+	}
+	args->offset = drm_vma_node_offset_addr(&obj->base.vma_node);
+out:
+	drm_gem_object_unreference_unlocked(&obj->base);
+	return ret;
+}
diff --git a/drivers/gpu/drm/ipvr/ipvr_gem.h b/drivers/gpu/drm/ipvr/ipvr_gem.h
new file mode 100644
index 0000000..525f630
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_gem.h
@@ -0,0 +1,48 @@
+/**************************************************************************
+ * ipvr_gem.h: IPVR header file for GEM ioctls
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _IPVR_GEM_H_
+#define _IPVR_GEM_H_
+
+#include "ipvr_drv.h"
+
+int ipvr_context_create_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv);
+int ipvr_context_destroy_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv);
+int ipvr_get_info_ioctl(struct drm_device *dev,
+			void *data,	struct drm_file *file_priv);
+int ipvr_gem_execbuffer_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv);
+int ipvr_gem_busy_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv);
+int ipvr_gem_create_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv);
+int ipvr_gem_wait_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv);
+int ipvr_gem_mmap_offset_ioctl(struct drm_device *dev,
+			void *data, struct drm_file *file_priv);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_mmu.c b/drivers/gpu/drm/ipvr/ipvr_mmu.c
new file mode 100644
index 0000000..0f8f364
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_mmu.c
@@ -0,0 +1,752 @@
+/**************************************************************************
+ * ipvr_mmu.c: IPVR MMU handling to support VED, VEC, VSP buffer access
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) Imagination Technologies Limited, UK
+ * Copyright (c) 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_mmu.h"
+#include "ipvr_debug.h"
+
+/*
+ * Code for the VED MMU
+ * Assumes system page size is same with VED (4KiB).
+ * Doesn't work for the case of page size mismatch.
+ */
+
+/*
+ * clflush on one processor only:
+ * clflush should apparently flush the cache line on all processors in an
+ * SMP system.
+ */
+
+/*
+ * kmap atomic:
+ * Usage of the slots must be completely encapsulated within a spinlock, and
+ * no other functions that may be using the locks for other purposed may be
+ * called from within the locked region.
+ * Since the slots are per processor, this will guarantee that we are the only
+ * user.
+ */
+
+/*
+ *PTE's and PDE's
+ */
+#define IPVR_PDE_MASK		0x003FFFFF
+#define IPVR_PDE_SHIFT		22
+#define IPVR_PTE_SHIFT		12
+#define IPVR_PTE_VALID		0x0001	/* PTE / PDE valid */
+#define IPVR_PTE_WO			0x0002	/* Write only */
+#define IPVR_PTE_RO			0x0004	/* Read only */
+#define IPVR_PTE_CACHED		0x0008	/* CPU cache coherent */
+
+struct ipvr_mmu_pt {
+	struct ipvr_mmu_pd *pd;
+	u32 index;
+	u32 count;
+	struct page *p;
+	u32 *v;
+};
+
+struct ipvr_mmu_pd {
+	struct ipvr_mmu_driver *driver;
+	u32 hw_context;
+	struct ipvr_mmu_pt **tables;
+	struct page *p;
+	struct page *dummy_pt;
+	struct page *dummy_page;
+	u32 pd_mask;
+	u32 invalid_pde;
+	u32 invalid_pte;
+};
+
+static inline u32 ipvr_mmu_pt_index(u32 offset)
+{
+	return (offset >> IPVR_PTE_SHIFT) & 0x3FF;
+}
+
+static inline u32 ipvr_mmu_pd_index(u32 offset)
+{
+	return offset >> IPVR_PDE_SHIFT;
+}
+
+#if defined(CONFIG_X86)
+static inline void ipvr_clflush(void *addr)
+{
+	__asm__ __volatile__("clflush (%0)\n" : : "r"(addr) : "memory");
+}
+
+static inline void
+ipvr_mmu_clflush(struct ipvr_mmu_driver *driver, void *addr)
+{
+	if (!driver->has_clflush)
+		return;
+
+	mb();
+	ipvr_clflush(addr);
+	mb();
+}
+
+static void
+ipvr_mmu_page_clflush(struct ipvr_mmu_driver *driver, struct page* page)
+{
+	u32 clflush_add = driver->clflush_add >> PAGE_SHIFT;
+	u32 clflush_count = PAGE_SIZE / clflush_add;
+	int i;
+	u8 *clf;
+
+	clf = kmap_atomic(page);
+
+	mb();
+	for (i = 0; i < clflush_count; ++i) {
+		ipvr_clflush(clf);
+		clf += clflush_add;
+	}
+	mb();
+
+	kunmap_atomic(clf);
+}
+
+static void ipvr_mmu_pages_clflush(struct ipvr_mmu_driver *driver,
+				struct page *page[], int num_pages)
+{
+	int i;
+
+	if (!driver->has_clflush)
+		return ;
+
+	for (i = 0; i < num_pages; i++)
+		ipvr_mmu_page_clflush(driver, *page++);
+}
+#else
+
+static inline void
+ipvr_mmu_clflush(struct ipvr_mmu_driver *driver, void *addr)
+{
+	;
+}
+
+static void ipvr_mmu_pages_clflush(struct ipvr_mmu_driver *driver,
+				struct page *page[], int num_pages)
+{
+	IPVR_DEBUG_GENERAL("Dumy ipvr_mmu_pages_clflush\n");
+}
+
+#endif
+
+static void
+ipvr_mmu_flush_pd_locked(struct ipvr_mmu_driver *driver, bool force)
+{
+	if (atomic_read(&driver->needs_tlbflush) || force) {
+		if (!driver->dev_priv)
+			goto out;
+
+		atomic_set(&driver->dev_priv->ipvr_mmu_invaldc, 1);
+	}
+out:
+	atomic_set(&driver->needs_tlbflush, 0);
+}
+
+static void ipvr_mmu_flush(struct ipvr_mmu_driver *driver, bool rc_prot)
+{
+	if (rc_prot)
+		down_write(&driver->sem);
+
+	if (!driver->dev_priv)
+		goto out;
+
+	atomic_set(&driver->dev_priv->ipvr_mmu_invaldc, 1);
+
+out:
+	if (rc_prot)
+		up_write(&driver->sem);
+}
+
+void ipvr_mmu_set_pd_context(struct ipvr_mmu_pd *pd, u32 hw_context)
+{
+	ipvr_mmu_pages_clflush(pd->driver, &pd->p, 1);
+	down_write(&pd->driver->sem);
+	wmb();
+	ipvr_mmu_flush_pd_locked(pd->driver, 1);
+	pd->hw_context = hw_context;
+	up_write(&pd->driver->sem);
+}
+
+static inline unsigned long
+ipvr_pd_addr_end(unsigned long addr, unsigned long end)
+{
+
+	addr = (addr + IPVR_PDE_MASK + 1) & ~IPVR_PDE_MASK;
+	return (addr < end) ? addr : end;
+}
+
+static inline u32 ipvr_mmu_mask_pte(u32 pfn, u32 type)
+{
+	u32 mask = IPVR_PTE_VALID;
+
+	if (type & IPVR_MMU_CACHED_MEMORY)
+		mask |= IPVR_PTE_CACHED;
+	if (type & IPVR_MMU_RO_MEMORY)
+		mask |= IPVR_PTE_RO;
+	if (type & IPVR_MMU_WO_MEMORY)
+		mask |= IPVR_PTE_WO;
+
+	return (pfn << PAGE_SHIFT) | mask;
+}
+
+static struct ipvr_mmu_pd* __must_check
+ipvr_mmu_alloc_pd(struct ipvr_mmu_driver *driver, u32 invalid_type)
+{
+	struct ipvr_mmu_pd *pd = kmalloc(sizeof(*pd), GFP_KERNEL);
+	u32 *v;
+	int i;
+
+	if (!pd)
+		return NULL;
+
+	pd->p = alloc_page(GFP_DMA32);
+	if (!pd->p)
+		goto out_err1;
+	pd->dummy_pt = alloc_page(GFP_DMA32);
+	if (!pd->dummy_pt)
+		goto out_err2;
+	pd->dummy_page = alloc_page(GFP_DMA32);
+	if (!pd->dummy_page)
+		goto out_err3;
+
+	pd->invalid_pde =
+		ipvr_mmu_mask_pte(page_to_pfn(pd->dummy_pt), invalid_type);
+	pd->invalid_pte =
+		ipvr_mmu_mask_pte(page_to_pfn(pd->dummy_page), invalid_type);
+
+	v = kmap(pd->dummy_pt);
+	if (!v)
+		goto out_err4;
+	for (i = 0; i < (PAGE_SIZE / sizeof(u32)); ++i)
+		v[i] = pd->invalid_pte;
+
+	kunmap(pd->dummy_pt);
+
+	v = kmap(pd->p);
+	if (!v)
+		goto out_err4;
+	for (i = 0; i < (PAGE_SIZE / sizeof(u32)); ++i)
+		v[i] = pd->invalid_pde;
+
+	kunmap(pd->p);
+
+	v = kmap(pd->dummy_page);
+	if (!v)
+		goto out_err4;
+	clear_page(v);
+	kunmap(pd->dummy_page);
+
+	pd->tables = vmalloc_user(sizeof(struct ipvr_mmu_pt *) * 1024);
+	if (!pd->tables)
+		goto out_err4;
+
+	pd->hw_context = -1;
+	pd->pd_mask = IPVR_PTE_VALID;
+	pd->driver = driver;
+
+	return pd;
+
+out_err4:
+	__free_page(pd->dummy_page);
+out_err3:
+	__free_page(pd->dummy_pt);
+out_err2:
+	__free_page(pd->p);
+out_err1:
+	kfree(pd);
+	return NULL;
+}
+
+static void ipvr_mmu_free_pt(struct ipvr_mmu_pt *pt)
+{
+	__free_page(pt->p);
+	kfree(pt);
+}
+
+static void ipvr_mmu_free_pagedir(struct ipvr_mmu_pd *pd)
+{
+	struct ipvr_mmu_driver *driver = pd->driver;
+	struct ipvr_mmu_pt *pt;
+	int i;
+
+	down_write(&driver->sem);
+	if (pd->hw_context != -1)
+		ipvr_mmu_flush_pd_locked(driver, 1);
+
+	/* Should take the spinlock here, but we don't need to do that
+	   since we have the semaphore in write mode. */
+
+	for (i = 0; i < 1024; ++i) {
+		pt = pd->tables[i];
+		if (pt)
+			ipvr_mmu_free_pt(pt);
+	}
+
+	vfree(pd->tables);
+	__free_page(pd->dummy_page);
+	__free_page(pd->dummy_pt);
+	__free_page(pd->p);
+	kfree(pd);
+	up_write(&driver->sem);
+}
+
+static struct ipvr_mmu_pt *ipvr_mmu_alloc_pt(struct ipvr_mmu_pd *pd)
+{
+	struct ipvr_mmu_pt *pt = kmalloc(sizeof(*pt), GFP_KERNEL);
+	void *v;
+	u32 clflush_add = pd->driver->clflush_add >> PAGE_SHIFT;
+	u32 clflush_count = PAGE_SIZE / clflush_add;
+	spinlock_t *lock = &pd->driver->lock;
+	u8 *clf;
+	u32 *ptes;
+	int i;
+
+	if (!pt)
+		return NULL;
+
+	pt->p = alloc_page(GFP_DMA32);
+	if (!pt->p) {
+		kfree(pt);
+		return NULL;
+	}
+
+	spin_lock(lock);
+
+	v = kmap_atomic(pt->p);
+
+	clf = (u8 *) v;
+	ptes = (u32 *) v;
+	for (i = 0; i < (PAGE_SIZE / sizeof(u32)); ++i)
+		*ptes++ = pd->invalid_pte;
+
+
+#if defined(CONFIG_X86)
+	if (pd->driver->has_clflush && pd->hw_context != -1) {
+		mb();
+		for (i = 0; i < clflush_count; ++i) {
+			ipvr_clflush(clf);
+			clf += clflush_add;
+		}
+		mb();
+	}
+#endif
+	kunmap_atomic(v);
+
+	spin_unlock(lock);
+
+	pt->count = 0;
+	pt->pd = pd;
+	pt->index = 0;
+
+	return pt;
+}
+
+static struct ipvr_mmu_pt *
+ipvr_mmu_pt_alloc_map_lock(struct ipvr_mmu_pd *pd, unsigned long addr)
+{
+	u32 index = ipvr_mmu_pd_index(addr);
+	struct ipvr_mmu_pt *pt;
+	u32 *v;
+	spinlock_t *lock = &pd->driver->lock;
+
+	spin_lock(lock);
+	pt = pd->tables[index];
+	while (!pt) {
+		spin_unlock(lock);
+		pt = ipvr_mmu_alloc_pt(pd);
+		if (!pt)
+			return NULL;
+		spin_lock(lock);
+
+		if (pd->tables[index]) {
+			spin_unlock(lock);
+			ipvr_mmu_free_pt(pt);
+			spin_lock(lock);
+			pt = pd->tables[index];
+			continue;
+		}
+
+		v = kmap_atomic(pd->p);
+
+		pd->tables[index] = pt;
+		v[index] = (page_to_pfn(pt->p) << 12) |
+			pd->pd_mask;
+
+
+		pt->index = index;
+
+		kunmap_atomic((void *) v);
+
+		if (pd->hw_context != -1) {
+			ipvr_mmu_clflush(pd->driver, (void *) &v[index]);
+			atomic_set(&pd->driver->needs_tlbflush, 1);
+		}
+	}
+
+	pt->v = kmap_atomic(pt->p);
+
+	return pt;
+}
+
+static struct ipvr_mmu_pt *
+ipvr_mmu_pt_map_lock(struct ipvr_mmu_pd *pd, unsigned long addr)
+{
+	u32 index = ipvr_mmu_pd_index(addr);
+	struct ipvr_mmu_pt *pt;
+	spinlock_t *lock = &pd->driver->lock;
+
+	spin_lock(lock);
+	pt = pd->tables[index];
+	if (!pt) {
+		spin_unlock(lock);
+		return NULL;
+	}
+
+	pt->v = kmap_atomic(pt->p);
+
+	return pt;
+}
+
+static void ipvr_mmu_pt_unmap_unlock(struct ipvr_mmu_pt *pt)
+{
+	struct ipvr_mmu_pd *pd = pt->pd;
+	u32 *v;
+
+	kunmap_atomic(pt->v);
+
+	if (pt->count == 0) {
+		v = kmap_atomic(pd->p);
+
+		v[pt->index] = pd->invalid_pde;
+		pd->tables[pt->index] = NULL;
+
+		if (pd->hw_context != -1) {
+			ipvr_mmu_clflush(pd->driver,
+					(void *) &v[pt->index]);
+			atomic_set(&pd->driver->needs_tlbflush, 1);
+		}
+
+		kunmap_atomic(pt->v);
+
+		spin_unlock(&pd->driver->lock);
+		ipvr_mmu_free_pt(pt);
+		return;
+	}
+	spin_unlock(&pd->driver->lock);
+}
+
+static inline void
+ipvr_mmu_set_pte(struct ipvr_mmu_pt *pt, unsigned long addr, u32 pte)
+{
+	pt->v[ipvr_mmu_pt_index(addr)] = pte;
+}
+
+static inline void
+ipvr_mmu_invalidate_pte(struct ipvr_mmu_pt *pt, unsigned long addr)
+{
+	pt->v[ipvr_mmu_pt_index(addr)] = pt->pd->invalid_pte;
+}
+
+struct ipvr_mmu_pd *ipvr_mmu_get_default_pd(struct ipvr_mmu_driver *driver)
+{
+	struct ipvr_mmu_pd *pd;
+
+	/* down_read(&driver->sem); */
+	pd = driver->default_pd;
+	/* up_read(&driver->sem); */
+
+	return pd;
+}
+
+/* Returns the physical address of the PD shared by sgx/msvdx */
+u32 __must_check ipvr_get_default_pd_addr32(struct ipvr_mmu_driver *driver)
+{
+	struct ipvr_mmu_pd *pd;
+	unsigned long pfn;
+	pd = ipvr_mmu_get_default_pd(driver);
+	pfn = page_to_pfn(pd->p);
+	if (pfn >= 0x00100000UL)
+		return 0;
+	return pfn << PAGE_SHIFT;
+}
+
+void ipvr_mmu_driver_takedown(struct ipvr_mmu_driver *driver)
+{
+	ipvr_mmu_free_pagedir(driver->default_pd);
+	kfree(driver);
+}
+
+struct ipvr_mmu_driver * __must_check
+ipvr_mmu_driver_init(u8 __iomem * registers, u32 invalid_type,
+			struct drm_ipvr_private *dev_priv)
+{
+	struct ipvr_mmu_driver *driver;
+
+	driver = kmalloc(sizeof(*driver), GFP_KERNEL);
+	if (!driver)
+		return NULL;
+
+	driver->dev_priv = dev_priv;
+
+	driver->default_pd =
+		ipvr_mmu_alloc_pd(driver, invalid_type);
+	if (!driver->default_pd)
+		goto out_err1;
+
+	spin_lock_init(&driver->lock);
+	init_rwsem(&driver->sem);
+	down_write(&driver->sem);
+	driver->register_map = registers;
+	atomic_set(&driver->needs_tlbflush, 1);
+
+	driver->has_clflush = false;
+
+#if defined(CONFIG_X86)
+	if (cpu_has_clflush) {
+		u32 tfms, misc, cap0, cap4, clflush_size;
+
+		/*
+		 * clflush size is determined at kernel setup for x86_64
+		 *  but not for i386. We have to do it here.
+		 */
+
+		cpuid(0x00000001, &tfms, &misc, &cap0, &cap4);
+		clflush_size = ((misc >> 8) & 0xff) * 8;
+		driver->has_clflush = true;
+		driver->clflush_add =
+			PAGE_SIZE * clflush_size / sizeof(u32);
+		driver->clflush_mask = driver->clflush_add - 1;
+		driver->clflush_mask = ~driver->clflush_mask;
+	}
+#endif
+
+	up_write(&driver->sem);
+	return driver;
+
+out_err1:
+	kfree(driver);
+	return NULL;
+}
+
+#if defined(CONFIG_X86)
+static void ipvr_mmu_flush_ptes(struct ipvr_mmu_pd *pd,
+			unsigned long address,
+			int num_pages,
+			u32 desired_tile_stride,
+			u32 hw_tile_stride)
+{
+	struct ipvr_mmu_pt *pt;
+	int rows = 1;
+	int i;
+	unsigned long addr;
+	unsigned long end;
+	unsigned long next;
+	unsigned long add;
+	unsigned long row_add;
+	unsigned long clflush_add = pd->driver->clflush_add;
+	unsigned long clflush_mask = pd->driver->clflush_mask;
+	IPVR_DEBUG_GENERAL("call x86 ipvr_mmu_flush_ptes, address is 0x%lx, "
+			"num pages is %d.\n", address, num_pages);
+	if (!pd->driver->has_clflush) {
+		IPVR_DEBUG_GENERAL("call ipvr_mmu_pages_clflush.\n");
+		ipvr_mmu_pages_clflush(pd->driver, &pd->p, num_pages);
+		return;
+	}
+
+	if (hw_tile_stride)
+		rows = num_pages / desired_tile_stride;
+	else
+		desired_tile_stride = num_pages;
+
+	add = desired_tile_stride << PAGE_SHIFT;
+	row_add = hw_tile_stride << PAGE_SHIFT;
+	mb();
+	for (i = 0; i < rows; ++i) {
+		addr = address;
+		end = addr + add;
+
+		do {
+			next = ipvr_pd_addr_end(addr, end);
+			pt = ipvr_mmu_pt_map_lock(pd, addr);
+			if (!pt)
+				continue;
+			do {
+				ipvr_clflush(&pt->v[ipvr_mmu_pt_index(addr)]);
+			} while (addr +=
+					 clflush_add,
+				 (addr & clflush_mask) < next);
+
+			ipvr_mmu_pt_unmap_unlock(pt);
+		} while (addr = next, next != end);
+		address += row_add;
+	}
+	mb();
+}
+#else
+
+static void ipvr_mmu_flush_ptes(struct ipvr_mmu_pd *pd,
+					unsigned long address,
+					int num_pages,
+					u32 desired_tile_stride,
+					u32 hw_tile_stride)
+{
+	IPVR_DEBUG_GENERAL("call non-x86 ipvr_mmu_flush_ptes.\n");
+}
+#endif
+
+void ipvr_mmu_remove_pages(struct ipvr_mmu_pd *pd, unsigned long address,
+			int num_pages, u32 desired_tile_stride,
+			u32 hw_tile_stride)
+{
+	struct ipvr_mmu_pt *pt;
+	int rows = 1;
+	int i;
+	unsigned long addr;
+	unsigned long end;
+	unsigned long next;
+	unsigned long add;
+	unsigned long row_add;
+	unsigned long f_address = address;
+
+	if (hw_tile_stride)
+		rows = num_pages / desired_tile_stride;
+	else
+		desired_tile_stride = num_pages;
+
+	add = desired_tile_stride << PAGE_SHIFT;
+	row_add = hw_tile_stride << PAGE_SHIFT;
+
+	/* down_read(&pd->driver->sem); */
+
+	/* Make sure we only need to flush this processor's cache */
+
+	for (i = 0; i < rows; ++i) {
+
+		addr = address;
+		end = addr + add;
+
+		do {
+			next = ipvr_pd_addr_end(addr, end);
+			pt = ipvr_mmu_pt_map_lock(pd, addr);
+			if (!pt)
+				continue;
+			do {
+				ipvr_mmu_invalidate_pte(pt, addr);
+				--pt->count;
+
+			} while (addr += PAGE_SIZE, addr < next);
+			ipvr_mmu_pt_unmap_unlock(pt);
+
+		} while (addr = next, next != end);
+		address += row_add;
+	}
+	if (pd->hw_context != -1)
+		ipvr_mmu_flush_ptes(pd, f_address, num_pages,
+				   desired_tile_stride, hw_tile_stride);
+
+	/* up_read(&pd->driver->sem); */
+
+	if (pd->hw_context != -1)
+		ipvr_mmu_flush(pd->driver, 0);
+	ipvr_stat_remove_mmu_bind(pd->driver->dev_priv, num_pages << PAGE_SHIFT);
+}
+
+int ipvr_mmu_insert_pages(struct ipvr_mmu_pd *pd, struct page **pages,
+			unsigned long address, int num_pages,
+			u32 desired_tile_stride,
+			u32 hw_tile_stride, u32 type)
+{
+	struct ipvr_mmu_pt *pt;
+	int rows = 1;
+	int i;
+	u32 pte;
+	unsigned long addr;
+	unsigned long end;
+	unsigned long next;
+	unsigned long add;
+	unsigned long row_add;
+	unsigned long f_address = address;
+	unsigned long pfn;
+	int ret = 0;
+
+	if (hw_tile_stride) {
+		if (num_pages % desired_tile_stride != 0)
+			return -EINVAL;
+		rows = num_pages / desired_tile_stride;
+	} else {
+		desired_tile_stride = num_pages;
+	}
+
+	add = desired_tile_stride << PAGE_SHIFT;
+	row_add = hw_tile_stride << PAGE_SHIFT;
+
+	down_read(&pd->driver->sem);
+
+	for (i = 0; i < rows; ++i) {
+
+		addr = address;
+		end = addr + add;
+
+		do {
+			next = ipvr_pd_addr_end(addr, end);
+			pt = ipvr_mmu_pt_alloc_map_lock(pd, addr);
+			if (!pt) {
+				ret = -ENOMEM;
+				goto out;
+			}
+			do {
+				pfn = page_to_pfn(*pages++);
+				/* should be under 4GiB */
+				if (pfn >= 0x00100000UL) {
+					IPVR_ERROR("cannot support pfn 0x%lx\n", pfn);
+					ret = -EINVAL;
+					goto out;
+				}
+				pte = ipvr_mmu_mask_pte(pfn, type);
+				ipvr_mmu_set_pte(pt, addr, pte);
+				pt->count++;
+			} while (addr += PAGE_SIZE, addr < next);
+			ipvr_mmu_pt_unmap_unlock(pt);
+
+		} while (addr = next, next != end);
+
+		address += row_add;
+	}
+out:
+	if (pd->hw_context != -1)
+		ipvr_mmu_flush_ptes(pd, f_address, num_pages,
+				   desired_tile_stride, hw_tile_stride);
+
+	up_read(&pd->driver->sem);
+
+	if (pd->hw_context != -1)
+		ipvr_mmu_flush(pd->driver, 1);
+
+	ipvr_stat_add_mmu_bind(pd->driver->dev_priv, num_pages << PAGE_SHIFT);
+	return ret;
+}
diff --git a/drivers/gpu/drm/ipvr/ipvr_mmu.h b/drivers/gpu/drm/ipvr/ipvr_mmu.h
new file mode 100644
index 0000000..1f524d4
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_mmu.h
@@ -0,0 +1,111 @@
+/**************************************************************************
+ * ipvr_mmu.h: IPVR header file for VED/VEC/VSP MMU handling
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) Imagination Technologies Limited, UK
+ * Copyright (c) 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Eric Anholt <eric at anholt.net>
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _IPVR_MMU_H_
+#define _IPVR_MMU_H_
+
+#include "ipvr_drv.h"
+
+static inline bool __must_check IPVR_IS_ERR(__force const unsigned long offset)
+{
+	return unlikely((offset) >= (unsigned long)-MAX_ERRNO);
+}
+
+static inline long __must_check IPVR_OFFSET_ERR(__force const unsigned long offset)
+{
+	return (long)offset;
+}
+
+static inline unsigned long __must_check IPVR_ERR_OFFSET(__force const long err)
+{
+	return (unsigned long)err;
+}
+
+/**
+ * memory access control for VPU
+ */
+#define IPVR_MMU_CACHED_MEMORY	  (1 << 0)	/* Bind to MMU only */
+#define IPVR_MMU_RO_MEMORY	  	  (1 << 1)	/* MMU RO memory */
+#define IPVR_MMU_WO_MEMORY	      (1 << 2)	/* MMU WO memory */
+
+/*
+ * linear MMU size is 512M : 0 - 512M
+ * tiling MMU size is 512M : 512M - 1024M
+ */
+#define IPVR_MEM_MMU_LINEAR_START	0x00000000
+#define IPVR_MEM_MMU_LINEAR_END		0x20000000
+#define IPVR_MEM_MMU_TILING_START	0x20000000
+#define IPVR_MEM_MMU_TILING_END		0x40000000
+
+struct ipvr_mmu_pd;
+struct ipvr_mmu_pt;
+
+struct ipvr_mmu_driver {
+	/* protects driver- and pd structures. Always take in read mode
+	 * before taking the page table spinlock.
+	 */
+	struct rw_semaphore sem;
+
+	/* protects page tables, directory tables and pt tables.
+	 * and pt structures.
+	 */
+	spinlock_t lock;
+
+	atomic_t needs_tlbflush;
+
+	u8 __iomem *register_map;
+	struct ipvr_mmu_pd *default_pd;
+
+	bool has_clflush;
+	u32 clflush_add;
+	unsigned long clflush_mask;
+
+	struct drm_ipvr_private *dev_priv;
+};
+
+struct ipvr_mmu_driver *__must_check ipvr_mmu_driver_init(u8 __iomem *registers,
+			u32 invalid_type, struct drm_ipvr_private *dev_priv);
+
+void ipvr_mmu_driver_takedown(struct ipvr_mmu_driver *driver);
+
+struct ipvr_mmu_pd *
+ipvr_mmu_get_default_pd(struct ipvr_mmu_driver *driver);
+
+void ipvr_mmu_set_pd_context(struct ipvr_mmu_pd *pd, u32 hw_context);
+
+u32 __must_check ipvr_get_default_pd_addr32(struct ipvr_mmu_driver *driver);
+
+int ipvr_mmu_insert_pages(struct ipvr_mmu_pd *pd, struct page **pages,
+			unsigned long address, int num_pages,
+			u32 desired_tile_stride, u32 hw_tile_stride, u32 type);
+
+void ipvr_mmu_remove_pages(struct ipvr_mmu_pd *pd,
+			unsigned long address, int num_pages,
+			u32 desired_tile_stride, u32 hw_tile_stride);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_trace.c b/drivers/gpu/drm/ipvr/ipvr_trace.c
new file mode 100644
index 0000000..91c0bda
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_trace.c
@@ -0,0 +1,11 @@
+/*
+ * Copyright © 2014 Intel Corporation
+ *
+ * Authors:
+ *    Yao Cheng <yao.cheng at intel.com>>
+ */
+
+#ifndef __CHECKER__
+#define CREATE_TRACE_POINTS
+#include "ipvr_trace.h"
+#endif
diff --git a/drivers/gpu/drm/ipvr/ipvr_trace.h b/drivers/gpu/drm/ipvr/ipvr_trace.h
new file mode 100644
index 0000000..6ea8b9a
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ipvr_trace.h
@@ -0,0 +1,333 @@
+/**************************************************************************
+ * ipvr_trace.h: IPVR header file for trace support
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#if !defined(_IPVR_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
+#define _IPVR_TRACE_H_
+
+#include "ipvr_bo.h"
+#include "ipvr_fence.h"
+#include "ved_msg.h"
+#include <drm/drmP.h>
+#include <linux/stringify.h>
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM ipvr
+#define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)
+#define TRACE_INCLUDE_FILE ipvr_trace
+
+/* object tracking */
+
+TRACE_EVENT(ipvr_create_object,
+	TP_PROTO(struct drm_ipvr_gem_object *obj, u64 mmu_offset),
+	TP_ARGS(obj, mmu_offset),
+	TP_STRUCT__entry(
+		__field(struct drm_ipvr_gem_object *, obj)
+		__field(u32, size)
+		__field(bool, tiling)
+		__field(u32, cache_level)
+		__field(u64, mmu_offset)
+	),
+	TP_fast_assign(
+		__entry->obj = obj;
+		__entry->size = obj->base.size;
+		__entry->tiling = obj->tiling;
+		__entry->cache_level = obj->cache_level;
+		__entry->mmu_offset = mmu_offset;
+	),
+	TP_printk("obj=0x%p, size=%u, tiling=%u, cache=%u, mmu_offset=0x%llx",
+		__entry->obj, __entry->size, __entry->tiling,
+		__entry->cache_level, __entry->mmu_offset)
+);
+
+TRACE_EVENT(ipvr_free_object,
+	TP_PROTO(struct drm_ipvr_gem_object *obj),
+	TP_ARGS(obj),
+	TP_STRUCT__entry(
+		__field(struct drm_ipvr_gem_object *, obj)
+	),
+	TP_fast_assign(
+		__entry->obj = obj;
+	),
+	TP_printk("obj=0x%p", __entry->obj)
+);
+
+TRACE_EVENT(ipvr_fence_wait_begin,
+	TP_PROTO(struct ipvr_fence *fence,
+		u32 signaled_seq,
+		u16 sync_seq),
+	TP_ARGS(fence, signaled_seq, sync_seq),
+	TP_STRUCT__entry(
+		__field(struct ipvr_fence *, fence)
+		__field(u16, fence_seq)
+		__field(u32, signaled_seq)
+		__field(u16, sync_seq)
+	),
+	TP_fast_assign(
+		__entry->fence = fence;
+		__entry->fence_seq = fence->seq;
+		__entry->signaled_seq = signaled_seq;
+		__entry->sync_seq = sync_seq;
+	),
+	TP_printk("fence=%p, fence_seq=%d, signaled_seq=%d, sync_seq=%d",
+		__entry->fence, __entry->fence_seq,
+		__entry->signaled_seq, __entry->sync_seq)
+);
+
+TRACE_EVENT(ipvr_fence_wait_end,
+	TP_PROTO(struct ipvr_fence *fence,
+		u32 signaled_seq,
+		u16 sync_seq),
+	TP_ARGS(fence, signaled_seq, sync_seq),
+	TP_STRUCT__entry(
+		__field(struct ipvr_fence *, fence)
+		__field(u16, fence_seq)
+		__field(u32, signaled_seq)
+		__field(u16, sync_seq)
+	),
+	TP_fast_assign(
+		__entry->fence = fence;
+		__entry->fence_seq = fence->seq;
+		__entry->signaled_seq = signaled_seq;
+		__entry->sync_seq = sync_seq;
+	),
+	TP_printk("fence=%p, fence_seq=%d, signaled_seq=%d, sync_seq=%d",
+		__entry->fence, __entry->fence_seq,
+		__entry->signaled_seq, __entry->sync_seq)
+);
+
+
+TRACE_EVENT(ipvr_fence_wait_lockup,
+	TP_PROTO(struct ipvr_fence *fence,
+		u32 signaled_seq,
+		u16 sync_seq),
+	TP_ARGS(fence, signaled_seq, sync_seq),
+	TP_STRUCT__entry(
+		__field(struct ipvr_fence *, fence)
+		__field(u16, fence_seq)
+		__field(u32, signaled_seq)
+		__field(u16, sync_seq)
+	),
+	TP_fast_assign(
+		__entry->fence = fence;
+		__entry->fence_seq = fence->seq;
+		__entry->signaled_seq = signaled_seq;
+		__entry->sync_seq = sync_seq;
+	),
+	TP_printk("fence=%p, fence_seq=%d, signaled_seq=%d, sync_seq=%d",
+		__entry->fence, __entry->fence_seq,
+		__entry->signaled_seq, __entry->sync_seq)
+);
+
+TRACE_EVENT(ipvr_execbuffer,
+	TP_PROTO(struct drm_ipvr_gem_execbuffer *exec),
+	TP_ARGS(exec),
+	TP_STRUCT__entry(
+		__field(u64, buffers_ptr)
+		__field(u32, buffer_count)
+		__field(u32, exec_start_offset)
+		__field(u32, exec_len)
+		__field(u32, ctx_id)
+	),
+	TP_fast_assign(
+		__entry->buffers_ptr = exec->buffers_ptr;
+		__entry->buffer_count = exec->buffer_count;
+		__entry->exec_start_offset = exec->exec_start_offset;
+		__entry->exec_len = exec->exec_len;
+		__entry->ctx_id = exec->ctx_id;
+	),
+	TP_printk("buffers_ptr=0x%llx, buffer_count=0x%d, "
+		"exec_start_offset=0x%x, exec_len=%u, ctx_id=%d",
+		__entry->buffers_ptr, __entry->buffer_count,
+		__entry->exec_start_offset, __entry->exec_len,
+		__entry->ctx_id)
+);
+
+TRACE_EVENT(ved_cmd_send,
+	TP_PROTO(u32 ctx_id, u32 cmd_id, u32 seq),
+	TP_ARGS(ctx_id, cmd_id, seq),
+	TP_STRUCT__entry(
+		__field(u32, ctx_id)
+		__field(u32, cmd_id)
+		__field(u32, seq)
+	),
+	TP_fast_assign(
+		__entry->ctx_id = ctx_id;
+		__entry->cmd_id = cmd_id;
+		__entry->seq = seq;
+	),
+	TP_printk("ctx_id=0x%08x, cmd_id=0x%08x, seq=0x%08x",
+		__entry->ctx_id, __entry->cmd_id, __entry->seq)
+);
+
+TRACE_EVENT(ved_cmd_copy,
+	TP_PROTO(u32 ctx_id, u32 cmd_id, u32 seq),
+	TP_ARGS(ctx_id, cmd_id, seq),
+	TP_STRUCT__entry(
+		__field(u32, ctx_id)
+		__field(u32, cmd_id)
+		__field(u32, seq)
+	),
+	TP_fast_assign(
+		__entry->ctx_id = ctx_id;
+		__entry->cmd_id = cmd_id;
+		__entry->seq = seq;
+	),
+	TP_printk("ctx_id=0x%08x, cmd_id=0x%08x, seq=0x%08x",
+		__entry->ctx_id, __entry->cmd_id, __entry->seq)
+);
+
+TRACE_EVENT(ipvr_get_power,
+	TP_PROTO(int usage, int pending),
+	TP_ARGS(usage, pending),
+	TP_STRUCT__entry(
+		__field(int, usage)
+		__field(int, pending)
+	),
+	TP_fast_assign(
+		__entry->usage = usage;
+		__entry->pending = pending;
+	),
+	TP_printk("power usage %d, pending events %d",
+		__entry->usage,
+		__entry->pending)
+);
+
+TRACE_EVENT(ipvr_put_power,
+	TP_PROTO(int usage, int pending),
+	TP_ARGS(usage, pending),
+	TP_STRUCT__entry(
+		__field(int, usage)
+		__field(int, pending)
+	),
+	TP_fast_assign(
+		__entry->usage = usage;
+		__entry->pending = pending;
+	),
+	TP_printk("power usage %d, pending events %d",
+		__entry->usage,
+		__entry->pending)
+);
+
+TRACE_EVENT(ved_power_on,
+	TP_PROTO(int freq),
+	TP_ARGS(freq),
+	TP_STRUCT__entry(
+		__field(int, freq)
+	),
+	TP_fast_assign(
+		__entry->freq = freq;
+	),
+	TP_printk("frequency %d MHz", __entry->freq)
+);
+
+TRACE_EVENT(ved_power_off,
+	TP_PROTO(int freq),
+	TP_ARGS(freq),
+	TP_STRUCT__entry(
+		__field(int, freq)
+	),
+	TP_fast_assign(
+		__entry->freq = freq;
+	),
+	TP_printk("frequency %d MHz", __entry->freq)
+);
+
+TRACE_EVENT(ved_irq_completed,
+	TP_PROTO(struct ipvr_context *ctx, struct fw_completed_msg *completed_msg),
+	TP_ARGS(ctx, completed_msg),
+	TP_STRUCT__entry(
+		__field(s64, ctx_id)
+		__field(u16, seqno)
+		__field(u32, flags)
+		__field(u32, vdebcr)
+		__field(u16, start_mb)
+		__field(u16, last_mb)
+	),
+	TP_fast_assign(
+		__entry->ctx_id = ctx? ctx->ctx_id: -1;
+		__entry->seqno = completed_msg->header.bits.msg_fence;
+		__entry->flags = completed_msg->flags;
+		__entry->vdebcr = completed_msg->vdebcr;
+		__entry->start_mb = completed_msg->mb.bits.start_mb;
+		__entry->last_mb = completed_msg->mb.bits.last_mb;
+	),
+	TP_printk("ctx=%lld, seq=0x%04x, flags=0x%08x, vdebcr=0x%08x, mb=[%u, %u]",
+		__entry->ctx_id,
+		__entry->seqno,
+		__entry->flags,
+		__entry->vdebcr,
+		__entry->start_mb,
+		__entry->last_mb)
+);
+
+TRACE_EVENT(ved_irq_panic,
+	TP_PROTO(struct fw_panic_msg *panic_msg, u32 err_trig,
+		u32 irq_status, u32 mmu_status, u32 dmac_status),
+	TP_ARGS(panic_msg, err_trig, irq_status, mmu_status, dmac_status),
+	TP_STRUCT__entry(
+		__field(u16, seqno)
+		__field(u32, fe_status)
+		__field(u32, be_status)
+		__field(u16, rsvd)
+		__field(u16, last_mb)
+		__field(u32, err_trig)
+		__field(u32, irq_status)
+		__field(u32, mmu_status)
+		__field(u32, dmac_status)
+
+	),
+	TP_fast_assign(
+		__entry->seqno = panic_msg->header.bits.msg_fence;
+		__entry->fe_status = panic_msg->fe_status;
+		__entry->be_status = panic_msg->be_status;
+		__entry->rsvd = panic_msg->mb.bits.reserved2;
+		__entry->last_mb = panic_msg->mb.bits.last_mb;
+		__entry->err_trig = err_trig;
+		__entry->irq_status = irq_status;
+		__entry->mmu_status = mmu_status;
+		__entry->dmac_status = dmac_status;
+	),
+	TP_printk("seq=0x%04x, status=[fe 0x%08x be 0x%08x], rsvd=0x%04x, "
+		"last_mb=%u, err_trig=0x%08x, irq_status=0x%08x, "
+		"mmu_status=0x%08x, dmac_status=0x%08x",
+		__entry->seqno,
+		__entry->fe_status,
+		__entry->be_status,
+		__entry->rsvd,
+		__entry->last_mb,
+		__entry->err_trig,
+		__entry->irq_status,
+		__entry->mmu_status,
+		__entry->dmac_status)
+);
+
+#endif /* _IPVR_TRACE_H_ */
+
+ /* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#include <trace/define_trace.h>
diff --git a/drivers/gpu/drm/ipvr/ved_cmd.c b/drivers/gpu/drm/ipvr/ved_cmd.c
new file mode 100644
index 0000000..d9de33e
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_cmd.c
@@ -0,0 +1,882 @@
+/**************************************************************************
+ * ved_cmd.c: VED command handling between host driver and VED firmware
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) Imagination Technologies Limited, UK
+ * Copyright (c) 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_gem.h"
+#include "ipvr_mmu.h"
+#include "ipvr_bo.h"
+#include "ipvr_trace.h"
+#include "ipvr_fence.h"
+#include "ved_cmd.h"
+#include "ved_fw.h"
+#include "ved_msg.h"
+#include "ved_reg.h"
+#include "ved_pm.h"
+#include <linux/pm_runtime.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+
+#ifndef list_first_entry
+#define list_first_entry(ptr, type, member) \
+	list_entry((ptr)->next, type, member)
+#endif
+
+int ved_mtx_send(struct ved_private *ved_priv, const void *msg)
+{
+	static struct fw_padding_msg pad_msg;
+	const u32 *p_msg = (u32 *)msg;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	u32 msg_num, words_free, ridx, widx, buf_size, buf_offset;
+	int ret = 0;
+	int i;
+	union msg_header *header;
+	header = (union msg_header *)msg;
+
+	IPVR_DEBUG_ENTRY("enter.\n");
+
+	/* we need clocks enabled before we touch VEC local ram,
+	 * but fw will take care of the clock after fw is loaded
+	 */
+
+	msg_num = (header->bits.msg_size + 3) / 4;
+
+	/* debug code for msg dump */
+	IPVR_DEBUG_VED("MSVDX: ved_mtx_send is %dDW\n", msg_num);
+
+	for (i = 0; i < msg_num; i++)
+		IPVR_DEBUG_VED("   0x%08x\n", p_msg[i]);
+
+	buf_size = IPVR_REG_READ32(MSVDX_COMMS_TO_MTX_BUF_SIZE) &
+		   ((1 << 16) - 1);
+
+	if (msg_num > buf_size) {
+		ret = -EINVAL;
+		IPVR_ERROR("VED: message exceed maximum, ret:%d\n", ret);
+		goto out;
+	}
+
+	ridx = IPVR_REG_READ32(MSVDX_COMMS_TO_MTX_RD_INDEX);
+	widx = IPVR_REG_READ32(MSVDX_COMMS_TO_MTX_WRT_INDEX);
+
+
+	buf_size = IPVR_REG_READ32(MSVDX_COMMS_TO_MTX_BUF_SIZE) &
+		   ((1 << 16) - 1);
+	/*0x2000 is VEC Local Ram offset*/
+	buf_offset =
+		(IPVR_REG_READ32(MSVDX_COMMS_TO_MTX_BUF_SIZE) >> 16) + 0x2000;
+
+	/* message would wrap, need to send a pad message */
+	if (widx + msg_num > buf_size) {
+		/* Shouldn't happen for a PAD message itself */
+		if (header->bits.msg_type == MTX_MSGID_PADDING)
+			IPVR_DEBUG_WARN("VED: should not wrap pad msg, "
+				"buf_size is %d, widx is %d, msg_num is %d.\n",
+				buf_size, widx, msg_num);
+
+		/* if the read pointer is at zero then we must wait for it to
+		 * change otherwise the write pointer will equal the read
+		 * pointer,which should only happen when the buffer is empty
+		 *
+		 * This will only happens if we try to overfill the queue,
+		 * queue management should make
+		 * sure this never happens in the first place.
+		 */
+		if (0 == ridx) {
+			ret = -EINVAL;
+			IPVR_ERROR("MSVDX: RIndex=0, ret:%d\n", ret);
+			goto out;
+		}
+
+		/* Send a pad message */
+		pad_msg.header.bits.msg_size = (buf_size - widx) << 2;
+		pad_msg.header.bits.msg_type = MTX_MSGID_PADDING;
+		ved_mtx_send(ved_priv, (void *)&pad_msg);
+		widx = IPVR_REG_READ32(MSVDX_COMMS_TO_MTX_WRT_INDEX);
+	}
+
+	if (widx >= ridx)
+		words_free = buf_size - (widx - ridx) - 1;
+	else
+		words_free = ridx - widx - 1;
+
+	if (msg_num > words_free) {
+		ret = -EINVAL;
+		IPVR_ERROR("MSVDX: msg_num > words_free, ret:%d\n", ret);
+		goto out;
+	}
+	while (msg_num > 0) {
+		IPVR_REG_WRITE32(*p_msg++, buf_offset + (widx << 2));
+		msg_num--;
+		widx++;
+		if (buf_size == widx)
+			widx = 0;
+	}
+
+	IPVR_REG_WRITE32(widx, MSVDX_COMMS_TO_MTX_WRT_INDEX);
+
+	/* Make sure clocks are enabled before we kick
+	 * but fw will take care of the clock after fw is loaded
+	 */
+
+	/* signal an interrupt to let the mtx know there is a new message */
+	IPVR_REG_WRITE32(1, MTX_KICK_INPUT_OFFSET);
+
+	/* Read MSVDX Register several times in case Idle signal assert */
+	IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET);
+	IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET);
+	IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET);
+	IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET);
+
+out:
+	return ret;
+}
+
+static int ved_cmd_send(struct ved_private *ved_priv, void *cmd,
+			u32 cmd_size, struct ipvr_context *ipvr_ctx)
+{
+	int ret = 0;
+	union msg_header *header;
+	u32 cur_seq = 0xffffffff;
+
+	while (cmd_size > 0) {
+		u32 cur_cmd_size, cur_cmd_id;
+		header = (union msg_header *)cmd;
+		cur_cmd_size = header->bits.msg_size;
+		cur_cmd_id = header->bits.msg_type;
+
+		cur_seq = ((struct fw_msg_header *)cmd)->header.bits.msg_fence;
+
+		if (cur_seq != 0xffffffff) {
+			ipvr_ctx->cur_seq = cur_seq;
+		}
+
+		if (cur_cmd_size > cmd_size) {
+			ret = -EINVAL;
+			IPVR_ERROR("VED: cmd_size %u cur_cmd_size %u.\n",
+				  cmd_size, cur_cmd_size);
+			goto out;
+		}
+
+		/* Send the message to h/w */
+		trace_ved_cmd_send(ipvr_ctx->ctx_id, cur_cmd_id, cur_seq);
+		ret = ved_mtx_send(ved_priv, cmd);
+		if (ret) {
+			IPVR_DEBUG_WARN("VED: ret:%d\n", ret);
+			goto out;
+		}
+		cmd += cur_cmd_size;
+		cmd_size -= cur_cmd_size;
+		if (cur_cmd_id == MTX_MSGID_HOST_BE_OPP ||
+			cur_cmd_id == MTX_MSGID_DEBLOCK ||
+			cur_cmd_id == MTX_MSGID_INTRA_OOLD) {
+			cmd += (sizeof(struct fw_deblock_msg) - cur_cmd_size);
+			cmd_size -=
+				(sizeof(struct fw_deblock_msg) - cur_cmd_size);
+		}
+	}
+out:
+	IPVR_DEBUG_VED("VED: ret:%d\n", ret);
+	return ret;
+}
+
+int ved_cmd_dequeue_send(struct ved_private *ved_priv)
+{
+	struct ved_cmd_queue *ved_cmd = NULL;
+	int ret = 0;
+	unsigned long irq_flags;
+
+	spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+	if (list_empty(&ved_priv->ved_queue)) {
+		IPVR_DEBUG_VED("VED: ved cmd queue empty.\n");
+		ved_priv->ved_busy = false;
+		spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+		return -ENODATA;
+	}
+
+	ved_cmd = list_first_entry(&ved_priv->ved_queue,
+				     struct ved_cmd_queue, head);
+	list_del(&ved_cmd->head);
+	spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+
+	IPVR_DEBUG_VED("VED: cmd queue seq is %08x.\n", ved_cmd->cmd_seq);
+
+	ipvr_set_tile(ved_priv->dev_priv, ved_cmd->tiling_scheme,
+				   ved_cmd->tiling_stride);
+
+	ret = ved_cmd_send(ved_priv, ved_cmd->cmd,
+			   ved_cmd->cmd_size, ved_cmd->ipvr_ctx);
+	if (ret) {
+		IPVR_ERROR("VED: ved_cmd_send failed.\n");
+		ret = -EFAULT;
+	}
+
+	kfree(ved_cmd->cmd);
+	kfree(ved_cmd);
+
+	return ret;
+}
+
+void ved_flush_cmd_queue(struct ved_private *ved_priv)
+{
+	struct ved_cmd_queue *ved_cmd;
+	struct list_head *list, *next;
+	unsigned long irq_flags;
+	spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+	/* Flush the VED cmd queue and signal all fences in the queue */
+	list_for_each_safe(list, next, &ved_priv->ved_queue) {
+		ved_cmd = list_entry(list, struct ved_cmd_queue, head);
+		list_del(list);
+		IPVR_DEBUG_VED("VED: flushing sequence:0x%08x.\n",
+				  ved_cmd->cmd_seq);
+		ved_priv->ved_cur_seq = ved_cmd->cmd_seq;
+
+		ipvr_fence_process(ved_priv->dev_priv, ved_cmd->cmd_seq, IPVR_CMD_SKIP);
+		kfree(ved_cmd->cmd);
+		kfree(ved_cmd);
+	}
+	ved_priv->ved_busy = false;
+	spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+}
+
+static int
+ved_map_command(struct ved_private *ved_priv,
+				struct drm_ipvr_gem_object *cmd_buffer,
+				u32 cmd_size, void **ved_cmd,
+				u16 sequence, s32 copy_cmd,
+				struct ipvr_context *ipvr_ctx)
+{
+	int ret = 0;
+	u32 cmd_size_remain;
+	void *cmd, *cmd_copy, *cmd_start;
+	union msg_header *header;
+	struct ipvr_fence *fence = NULL;
+
+	/* command buffers may not exceed page boundary */
+	if (cmd_size > PAGE_SIZE)
+		return -EINVAL;
+
+	cmd_start = kmap(sg_page(cmd_buffer->sg_table->sgl));
+	if (!cmd_start) {
+		IPVR_ERROR("VED: kmap failed.\n");
+		return -EFAULT;
+	}
+
+	cmd = cmd_start;
+	cmd_size_remain = cmd_size;
+
+	while (cmd_size_remain > 0) {
+		u32 cur_cmd_size, cur_cmd_id, mmu_ptd, msvdx_mmu_invalid;
+		if (cmd_size_remain < MTX_GENMSG_HEADER_SIZE) {
+			ret = -EINVAL;
+			goto out;
+		}
+		header = (union msg_header *)cmd;
+		cur_cmd_size = header->bits.msg_size;
+		cur_cmd_id = header->bits.msg_type;
+		mmu_ptd = 0;
+		msvdx_mmu_invalid = 0;
+
+		IPVR_DEBUG_VED("cmd start at %p cur_cmd_size = %d"
+			       " cur_cmd_id = %02x fence = %08x\n",
+			       cmd, cur_cmd_size,
+			       cur_cmd_id, sequence);
+		if ((cur_cmd_size % sizeof(u32))
+		    || (cur_cmd_size > cmd_size_remain)) {
+			ret = -EINVAL;
+			IPVR_ERROR("VED: cmd size err, ret:%d.\n", ret);
+			goto out;
+		}
+
+		switch (cur_cmd_id) {
+		case MTX_MSGID_DECODE_FE: {
+			struct fw_decode_msg *decode_msg;
+			if (sizeof(struct fw_decode_msg) > cmd_size_remain) {
+				/* Msg size is not correct */
+				ret = -EINVAL;
+				IPVR_DEBUG_WARN("MSVDX: wrong msg size.\n");
+				goto out;
+			}
+			decode_msg = (struct fw_decode_msg *)cmd;
+			decode_msg->header.bits.msg_fence = sequence;
+
+			mmu_ptd = ipvr_get_default_pd_addr32(ved_priv->dev_priv->mmu);
+			if (mmu_ptd == 0) {
+				ret = -EINVAL;
+				IPVR_DEBUG_WARN("MSVDX: invalid PD addr32.\n");
+				goto out;
+			}
+			msvdx_mmu_invalid = atomic_cmpxchg(&ved_priv->dev_priv->ipvr_mmu_invaldc, 1, 0);
+			if (msvdx_mmu_invalid == 1) {
+				decode_msg->flag_size.bits.flags |= FW_INVALIDATE_MMU;
+				IPVR_DEBUG_VED("VED: Set MMU invalidate\n");
+			}
+			/* if ctx_id is not passed, use default id */
+			if (decode_msg->mmu_context.bits.context == 0)
+				decode_msg->mmu_context.bits.context =
+					ved_priv->dev_priv->default_ctx.ctx_id;
+
+			decode_msg->mmu_context.bits.mmu_ptd = mmu_ptd >> 8;
+			IPVR_DEBUG_VED("VED: MSGID_DECODE_FE:"
+					" - fence: %08x"
+					" - flags: %08x - buffer_size: %08x"
+					" - crtl_alloc_addr: %08x"
+					" - context: %08x - mmu_ptd: %08x"
+					" - operating_mode: %08x.\n",
+					decode_msg->header.bits.msg_fence,
+					decode_msg->flag_size.bits.flags,
+					decode_msg->flag_size.bits.buffer_size,
+					decode_msg->crtl_alloc_addr,
+					decode_msg->mmu_context.bits.context,
+					decode_msg->mmu_context.bits.mmu_ptd,
+					decode_msg->operating_mode);
+			break;
+		}
+		default:
+			/* Msg not supported */
+			ret = -EINVAL;
+			IPVR_DEBUG_WARN("VED: msg not supported.\n");
+			goto out;
+		}
+
+		cmd += cur_cmd_size;
+		cmd_size_remain -= cur_cmd_size;
+	}
+
+	fence = ipvr_fence_create(ved_priv->dev_priv);
+	if (IS_ERR(fence)) {
+		ret = PTR_ERR(fence);
+		IPVR_ERROR("Failed calling ipvr_fence_create: %d\n", ret);
+		goto out;
+	}
+
+	ipvr_fence_buffer_objects(&ved_priv->dev_priv->validate_ctx.validate_list,
+				fence);
+
+	if (copy_cmd) {
+		IPVR_DEBUG_VED("VED: copying command.\n");
+
+		cmd_copy = kzalloc(cmd_size, GFP_KERNEL);
+		if (cmd_copy == NULL) {
+			ret = -ENOMEM;
+			IPVR_ERROR("VED: fail to callc, ret=:%d\n", ret);
+			goto out;
+		}
+		memcpy(cmd_copy, cmd_start, cmd_size);
+		*ved_cmd = cmd_copy;
+	} else {
+		IPVR_DEBUG_VED("VED: did NOT copy command.\n");
+		ipvr_set_tile(ved_priv->dev_priv, ved_priv->default_tiling_scheme,
+					ved_priv->default_tiling_stride);
+
+		ret = ved_cmd_send(ved_priv, cmd_start, cmd_size, ipvr_ctx);
+		if (ret) {
+			IPVR_ERROR("VED: ved_cmd_send failed\n");
+			ret = -EINVAL;
+		}
+	}
+
+out:
+	kunmap(sg_page(cmd_buffer->sg_table->sgl));
+
+	return ret;
+}
+
+static int
+ved_submit_cmdbuf_copy(struct ved_private *ved_priv,
+				struct drm_ipvr_gem_object *cmd_buffer,
+				u32 cmd_size,
+				struct ipvr_context *ipvr_ctx,
+				u32 fence_flag)
+{
+	struct ved_cmd_queue *ved_cmd;
+	u16 sequence =  (ved_priv->dev_priv->last_seq << 4);
+	unsigned long irq_flags;
+	void *cmd = NULL;
+	int ret;
+	union msg_header *header;
+
+	/* queue the command to be sent when the h/w is ready */
+	IPVR_DEBUG_VED("VED: queueing sequence:%08x.\n",
+			  sequence);
+	ved_cmd = kzalloc(sizeof(struct ved_cmd_queue),
+			    GFP_KERNEL);
+	if (ved_cmd == NULL) {
+		IPVR_ERROR("MSVDXQUE: Out of memory...\n");
+		return -ENOMEM;
+	}
+
+	ret = ved_map_command(ved_priv, cmd_buffer, cmd_size,
+				&cmd, sequence, 1, ipvr_ctx);
+	if (ret) {
+		IPVR_ERROR("VED: Failed to extract cmd\n");
+		kfree(ved_cmd);
+		/* -EINVAL or -EFAULT or -ENOMEM */
+		return ret;
+	}
+	header = (union msg_header *)cmd;
+	ved_cmd->cmd = cmd;
+	ved_cmd->cmd_size = cmd_size;
+	ved_cmd->cmd_seq = sequence;
+
+	ved_cmd->tiling_scheme = ved_priv->default_tiling_scheme;
+	ved_cmd->tiling_stride = ved_priv->default_tiling_stride;
+	ved_cmd->ipvr_ctx = ipvr_ctx;
+	spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+	list_add_tail(&ved_cmd->head, &ved_priv->ved_queue);
+	spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+	if (!ved_priv->ved_busy) {
+		ved_priv->ved_busy = true;
+		IPVR_DEBUG_VED("VED: Need immediate dequeue.\n");
+		ved_cmd_dequeue_send(ved_priv);
+	}
+	trace_ved_cmd_copy(ipvr_ctx->ctx_id, header->bits.msg_type, sequence);
+
+	return ret;
+}
+
+int
+ved_submit_video_cmdbuf(struct ved_private *ved_priv,
+				struct drm_ipvr_gem_object *cmd_buffer,
+				u32 cmd_size,
+				struct ipvr_context *ipvr_ctx,
+				u32 fence_flag)
+{
+	unsigned long irq_flags;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	u16 sequence =  (dev_priv->last_seq << 4) & 0xffff;
+	int ret = 0;
+
+	if (sequence == IPVR_FENCE_SIGNALED_SEQ) {
+		sequence =  (++ved_priv->dev_priv->last_seq << 4) & 0xffff;
+	}
+
+	if (!ipvr_ctx) {
+		IPVR_ERROR("VED: null ctx\n");
+		return -ENOENT;
+	}
+
+	spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+
+	IPVR_DEBUG_VED("sequence is 0x%x, needs_reset is 0x%x.\n",
+			sequence, ved_priv->ved_needs_reset);
+
+	if (WARN_ON(ipvr_runtime_pm_get(ved_priv->dev_priv) < 0)) {
+		IPVR_ERROR("Failed to get ipvr power\n");
+		spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+		return -EBUSY;
+	}
+
+	if (ved_priv->ved_busy) {
+		spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+		ret = ved_submit_cmdbuf_copy(ved_priv, cmd_buffer,
+			    cmd_size, ipvr_ctx, fence_flag);
+
+		return ret;
+	}
+
+	if (ved_priv->ved_needs_reset) {
+		spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+		IPVR_DEBUG_VED("VED: will reset msvdx.\n");
+
+		if (ved_core_reset(ved_priv)) {
+			ret = -EBUSY;
+			IPVR_ERROR("VED: Reset failed.\n");
+			goto out_power_put;
+		}
+
+		ved_priv->ved_needs_reset = 0;
+		ved_priv->ved_busy = false;
+
+		if (ved_core_init(ved_priv->dev_priv)) {
+			ret = -EBUSY;
+			IPVR_DEBUG_WARN("VED: ved_core_init fail.\n");
+			goto out_power_put;
+		}
+
+		spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+	}
+
+	if (!ved_priv->ved_fw_loaded) {
+		spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+		IPVR_DEBUG_VED("VED: reload FW to MTX\n");
+		ret = ved_setup_fw(ved_priv);
+		if (ret) {
+			IPVR_ERROR("VED: fail to load FW\n");
+			/* FIXME: find a proper return value */
+			ret = -EFAULT;
+			goto out_power_put;
+		}
+		ved_priv->ved_fw_loaded = true;
+
+		IPVR_DEBUG_VED("VED: load firmware successfully\n");
+		spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+	}
+
+	ved_priv->ved_busy = true;
+	spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+	IPVR_DEBUG_VED("VED: commit command to HW,seq=0x%08x\n",
+			  sequence);
+	ret = ved_map_command(ved_priv, cmd_buffer, cmd_size,
+				NULL, sequence, 0, ipvr_ctx);
+	if (ret) {
+		IPVR_ERROR("VED: Failed to extract cmd.\n");
+		goto out_power_put;
+	}
+
+	return 0;
+out_power_put:
+	if (WARN_ON(ipvr_runtime_pm_put(ved_priv->dev_priv, false) < 0))
+		IPVR_ERROR("Failed to put ipvr power\n");
+	return ret;
+}
+
+int ved_cmdbuf_video(struct ved_private *ved_priv,
+						struct drm_ipvr_gem_object *cmd_buffer,
+						u32 cmdbuf_size,
+						struct ipvr_context *ipvr_ctx)
+{
+	return ved_submit_video_cmdbuf(ved_priv, cmd_buffer, cmdbuf_size, ipvr_ctx, 0);
+}
+
+static int ved_handle_panic_msg(struct ved_private *ved_priv,
+					struct fw_panic_msg *panic_msg)
+{
+	/* For VXD385 firmware, fence value is not validate here */
+	u32 diff = 0;
+	u16 fence;
+	u32 err_trig, irq_sts, mmu_sts, dmac_sts;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	IPVR_DEBUG_WARN("MSVDX: MSGID_CMD_HW_PANIC:"
+		  "Fault detected"
+		  " - Fence: %08x"
+		  " - fe_status mb: %08x"
+		  " - be_status mb: %08x"
+		  " - reserved2: %08x"
+		  " - last mb: %08x"
+		  " - resetting and ignoring error\n",
+		  panic_msg->header.bits.msg_fence,
+		  panic_msg->fe_status,
+		  panic_msg->be_status,
+		  panic_msg->mb.bits.reserved2,
+		  panic_msg->mb.bits.last_mb);
+	/*
+	 * If bit 8 of MSVDX_INTERRUPT_STATUS is set the fault
+	 * was caused in the DMAC. In this case you should
+	 * check bits 20:22 of MSVDX_INTERRUPT_STATUS.
+	 * If bit 20 is set there was a problem DMAing the buffer
+	 * back to host. If bit 22 is set you'll need to get the
+	 * value of MSVDX_DMAC_STREAM_STATUS (0x648).
+	 * If bit 1 is set then there was an issue DMAing
+	 * the bitstream or termination code for parsing.
+	 */
+	err_trig = IPVR_REG_READ32(MSVDX_COMMS_ERROR_TRIG);
+	irq_sts = IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET);
+	mmu_sts = IPVR_REG_READ32(MSVDX_MMU_STATUS_OFFSET);
+	dmac_sts = IPVR_REG_READ32(MSVDX_DMAC_STREAM_STATUS_OFFSET);
+	IPVR_DEBUG_WARN("MSVDX: MSVDX_COMMS_ERROR_TRIG is 0x%x,"
+		"MSVDX_INTERRUPT_STATUS is 0x%x,"
+		"MSVDX_MMU_STATUS is 0x%x,"
+		"MSVDX_DMAC_STREAM_STATUS is 0x%x.\n",
+		err_trig, irq_sts, mmu_sts, dmac_sts);
+
+	trace_ved_irq_panic(panic_msg, err_trig, irq_sts, mmu_sts, dmac_sts);
+
+	fence = panic_msg->header.bits.msg_fence;
+
+	ved_priv->ved_needs_reset = 1;
+
+	diff = ved_priv->ved_cur_seq - dev_priv->last_seq;
+	if (diff > 0x0FFFFFFF)
+		ved_priv->ved_cur_seq++;
+
+	IPVR_DEBUG_WARN("VED: Fence ID missing, assuming %08x\n",
+			ved_priv->ved_cur_seq);
+
+	ipvr_fence_process(dev_priv, ved_priv->ved_cur_seq, IPVR_CMD_FAILED);
+
+	/* Flush the command queue */
+	ved_flush_cmd_queue(ved_priv);
+	ved_priv->ved_busy = false;
+	return 0;
+}
+
+static int
+ved_handle_completed_msg(struct ved_private *ved_priv,
+				struct fw_completed_msg *completed_msg)
+{
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	u16 fence, flags;
+	int ret = 0;
+	struct ipvr_context *ipvr_ctx;
+
+	IPVR_DEBUG_VED("VED: MSGID_CMD_COMPLETED:"
+		" - Fence: %08x - flags: %08x - vdebcr: %08x"
+		" - first_mb : %d - last_mb: %d\n",
+		completed_msg->header.bits.msg_fence,
+		completed_msg->flags, completed_msg->vdebcr,
+		completed_msg->mb.bits.start_mb,
+		completed_msg->mb.bits.last_mb);
+
+	flags = completed_msg->flags;
+	fence = completed_msg->header.bits.msg_fence;
+
+	ved_priv->ved_cur_seq = fence;
+
+	ipvr_fence_process(dev_priv, fence, IPVR_CMD_SUCCESS);
+
+	ipvr_ctx = ipvr_find_ctx_with_fence(dev_priv, fence);
+	trace_ved_irq_completed(ipvr_ctx, completed_msg);
+	if (unlikely(ipvr_ctx == NULL)) {
+		IPVR_DEBUG_WARN("abnormal complete msg: seq=0x%04x.\n", fence);
+		ret = -EINVAL;
+		goto out_clear_busy;
+	}
+
+	if (flags & FW_VA_RENDER_HOST_INT) {
+		/* Now send the next command from the msvdx cmd queue */
+		if (ved_cmd_dequeue_send(ved_priv) == 0)
+			goto out;
+	}
+
+out_clear_busy:
+	ved_priv->ved_busy = false;
+out:
+	return 0;
+}
+
+/*
+ * MSVDX MTX interrupt
+ */
+static void ved_mtx_interrupt(struct ved_private *ved_priv)
+{
+	static u32 buf[128]; /* message buffer */
+	u32 ridx, widx, buf_size, buf_offset;
+	u32 num, ofs; /* message num and offset */
+	union msg_header *header;
+	int cmd_complete = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	IPVR_DEBUG_VED("VED: Got a VED MTX interrupt.\n");
+
+	/* we need clocks enabled before we touch VEC local ram,
+	 * but fw will take care of the clock after fw is loaded
+	 */
+
+loop: /* just for coding style check */
+	ridx = IPVR_REG_READ32(MSVDX_COMMS_TO_HOST_RD_INDEX);
+	widx = IPVR_REG_READ32(MSVDX_COMMS_TO_HOST_WRT_INDEX);
+
+	/* Get out of here if nothing */
+	if (ridx == widx)
+		goto done;
+
+	buf_size = IPVR_REG_READ32(MSVDX_COMMS_TO_HOST_BUF_SIZE) &
+		((1 << 16) - 1);
+	/*0x2000 is VEC Local Ram offset*/
+	buf_offset = (IPVR_REG_READ32(MSVDX_COMMS_TO_HOST_BUF_SIZE) >> 16)
+		+ 0x2000;
+
+	ofs = 0;
+	buf[ofs] = IPVR_REG_READ32(buf_offset + (ridx << 2));
+	header = (union msg_header *)buf;
+
+	/* round to nearest word */
+	num = (header->bits.msg_size + 3) / 4;
+
+	/* ASSERT(num <= sizeof(buf) / sizeof(u32)); */
+
+	if (++ridx >= buf_size)
+		ridx = 0;
+
+	for (ofs++; ofs < num; ofs++) {
+		buf[ofs] = IPVR_REG_READ32(buf_offset + (ridx << 2));
+
+		if (++ridx >= buf_size)
+			ridx = 0;
+	}
+
+	/* Update the Read index */
+	IPVR_REG_WRITE32(ridx, MSVDX_COMMS_TO_HOST_RD_INDEX);
+
+	if (ved_priv->ved_needs_reset)
+		goto loop;
+
+	switch (header->bits.msg_type) {
+	case MTX_MSGID_HW_PANIC: {
+		struct fw_panic_msg *panic_msg = (struct fw_panic_msg *)buf;
+		cmd_complete = 1;
+		ved_handle_panic_msg(ved_priv, panic_msg);
+		/**
+		 * panic msg clears all pending cmds and breaks the cmd<->irq pairing
+		 */
+		if (WARN_ON(ipvr_runtime_pm_put_all(ved_priv->dev_priv, true) < 0)) {
+			IPVR_ERROR("Error clearing pending events and put power\n");
+		}
+		goto done;
+	}
+
+	case MTX_MSGID_COMPLETED: {
+		struct fw_completed_msg *completed_msg =
+					(struct fw_completed_msg *)buf;
+		cmd_complete = 1;
+		if (ved_handle_completed_msg(ved_priv, completed_msg))
+			cmd_complete = 0;
+		/**
+		 * for VP8, cmd and COMPLETED msg are paired. we can safely call
+		 * get in execbuf_ioctl and call put here
+		 */
+		if (WARN_ON(ipvr_runtime_pm_put(ved_priv->dev_priv, true) < 0)) {
+			IPVR_ERROR("Error put power\n");
+		}
+		break;
+	}
+
+	default:
+		IPVR_ERROR("VED: unknown message from MTX, ID:0x%08x.\n",
+			header->bits.msg_type);
+		goto done;
+	}
+
+done:
+	IPVR_DEBUG_VED("VED Interrupt: finish process a message.\n");
+	if (ridx != widx) {
+		IPVR_DEBUG_VED("VED: there are more message to be read.\n");
+		goto loop;
+	}
+
+	mb();	/* TBD check this... */
+}
+
+/*
+ * MSVDX interrupt.
+ */
+int ved_irq_handler(struct ved_private *ved_priv)
+{
+	u32 msvdx_stat;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	msvdx_stat = IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET);
+
+	/* driver only needs to handle mtx irq
+	 * For MMU fault irq, there's always a HW PANIC generated
+	 * if HW/FW is totally hang, the lockup function will handle
+	 * the reseting
+	 */
+	if (msvdx_stat & MSVDX_INTERRUPT_STATUS_MMU_FAULT_IRQ_MASK) {
+		/*Ideally we should we should never get to this */
+		IPVR_DEBUG_IRQ("VED: MMU Fault:0x%x\n", msvdx_stat);
+
+		/* Pause MMU */
+		IPVR_REG_WRITE32(MSVDX_MMU_CONTROL0_MMU_PAUSE_MASK,
+			     MSVDX_MMU_CONTROL0_OFFSET);
+		wmb();
+
+		/* Clear this interupt bit only */
+		IPVR_REG_WRITE32(MSVDX_INTERRUPT_STATUS_MMU_FAULT_IRQ_MASK,
+			     MSVDX_INTERRUPT_CLEAR_OFFSET);
+		IPVR_REG_READ32(MSVDX_INTERRUPT_CLEAR_OFFSET);
+		rmb();
+
+		ved_priv->ved_needs_reset = 1;
+	} else if (msvdx_stat & MSVDX_INTERRUPT_STATUS_MTX_IRQ_MASK) {
+		IPVR_DEBUG_IRQ("VED: msvdx_stat: 0x%x(MTX)\n", msvdx_stat);
+
+		/* Clear all interupt bits */
+		IPVR_REG_WRITE32(0xffff, MSVDX_INTERRUPT_CLEAR_OFFSET);
+
+		IPVR_REG_READ32(MSVDX_INTERRUPT_CLEAR_OFFSET);
+		rmb();
+
+		ved_mtx_interrupt(ved_priv);
+	}
+
+	return 0;
+}
+
+int ved_check_idle(struct ved_private *ved_priv)
+{
+	int loop, ret;
+	struct drm_ipvr_private *dev_priv;
+	if (!ved_priv)
+		return 0;
+
+	dev_priv = ved_priv->dev_priv;
+	if (!ved_priv->ved_fw_loaded)
+		return 0;
+
+	if (ved_priv->ved_busy) {
+		IPVR_DEBUG_PM("VED: ved_busy was set, return busy.\n");
+		return -EBUSY;
+	}
+
+	/* on some cores below 50502, there is one instance that
+	 * read requests may not go to zero is in the case of a page fault,
+	 * check core revision by reg MSVDX_CORE_REV, 385 core is 0x20001
+	 * check if mmu page fault happend by reg MSVDX_INTERRUPT_STATUS,
+	 * check was it a page table rather than a protection fault
+	 * by reg MSVDX_MMU_STATUS, for such case,
+	 * need call ved_core_reset as the work around */
+	if ((IPVR_REG_READ32(MSVDX_CORE_REV_OFFSET) < 0x00050502) &&
+		(IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET)
+			& MSVDX_INTERRUPT_STATUS_MMU_FAULT_IRQ_MASK) &&
+		(IPVR_REG_READ32(MSVDX_MMU_STATUS_OFFSET) & 1)) {
+		IPVR_DEBUG_WARN("mmu page fault, recover by core_reset.\n");
+		return 0;
+	}
+
+	/* check MSVDX_MMU_MEM_REQ to confirm there's no memory requests */
+	for (loop = 0; loop < 10; loop++)
+		ret = ved_wait_for_register(ved_priv,
+					MSVDX_MMU_MEM_REQ_OFFSET,
+					0, 0xff, 100, 1);
+	if (ret) {
+		IPVR_DEBUG_WARN("MSVDX: MSVDX_MMU_MEM_REQ reg is 0x%x,\n"
+				"indicate mem busy, prevent power off ved,"
+				"MSVDX_COMMS_FW_STATUS reg is 0x%x,"
+				"MSVDX_COMMS_ERROR_TRIG reg is 0x%x,",
+				IPVR_REG_READ32(MSVDX_MMU_MEM_REQ_OFFSET),
+				IPVR_REG_READ32(MSVDX_COMMS_FW_STATUS),
+				IPVR_REG_READ32(MSVDX_COMMS_ERROR_TRIG));
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+void ved_check_reset_fw(struct ved_private *ved_priv)
+{
+	unsigned long irq_flags;
+
+	spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+
+	/* handling fw upload here if required */
+	/* power off first, then hw_begin will power up/upload FW correctly */
+	if (ved_priv->ved_needs_reset & MSVDX_RESET_NEEDS_REUPLOAD_FW) {
+		ved_priv->ved_needs_reset &= ~MSVDX_RESET_NEEDS_REUPLOAD_FW;
+		spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+		IPVR_DEBUG_VED("VED: force power off VED due to decode err\n");
+		spin_lock_irqsave(&ved_priv->ved_lock, irq_flags);
+	}
+	spin_unlock_irqrestore(&ved_priv->ved_lock, irq_flags);
+}
diff --git a/drivers/gpu/drm/ipvr/ved_cmd.h b/drivers/gpu/drm/ipvr/ved_cmd.h
new file mode 100644
index 0000000..f604b02
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_cmd.h
@@ -0,0 +1,70 @@
+/**************************************************************************
+ * ved_cmd.h: VED header file to support command buffer handling
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) Imagination Technologies Limited, UK
+ * Copyright (c) 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _VED_CMD_H_
+#define _VED_CMD_H_
+
+#include "ipvr_drv.h"
+#include "ipvr_drm.h"
+#include "ipvr_gem.h"
+#include "ipvr_fence.h"
+#include "ipvr_exec.h"
+#include "ved_reg.h"
+#include "ved_pm.h"
+
+struct ved_cmd_queue {
+	struct list_head head;
+	void *cmd;
+	u32 cmd_size;
+	u16 cmd_seq;
+	u32 fence_flag;
+	u8 tiling_scheme;
+	u8 tiling_stride;
+	struct ipvr_context *ipvr_ctx;
+};
+
+int ved_irq_handler(struct ved_private *ved_priv);
+
+int ved_mtx_send(struct ved_private *ved_priv, const void *msg);
+
+int ved_check_idle(struct ved_private *ved_priv);
+
+void ved_check_reset_fw(struct ved_private *ved_priv);
+
+void ved_flush_cmd_queue(struct ved_private *ved_priv);
+
+int ved_cmdbuf_video(struct ved_private *ved_priv,
+			struct drm_ipvr_gem_object *cmd_buffer,
+			u32 cmdbuf_size, struct ipvr_context *ipvr_ctx);
+
+int ved_submit_video_cmdbuf(struct ved_private *ved_priv,
+			struct drm_ipvr_gem_object *cmd_buffer, u32 cmd_size,
+			struct ipvr_context *ipvr_ctx, u32 fence_flag);
+
+int ved_cmd_dequeue_send(struct ved_private *ved_priv);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ved_fw.c b/drivers/gpu/drm/ipvr/ved_fw.c
new file mode 100644
index 0000000..43682da
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_fw.c
@@ -0,0 +1,1199 @@
+/**************************************************************************
+ * ved_fw.c: VED initialization and mtx-firmware upload
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) Imagination Technologies Limited, UK
+ * Copyright (c) 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#include "ipvr_bo.h"
+#include "ipvr_mmu.h"
+#include "ipvr_gem.h"
+#include "ved_fw.h"
+#include "ved_cmd.h"
+#include "ved_msg.h"
+#include "ved_reg.h"
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <asm/cacheflush.h>
+
+#define STACKGUARDWORD			0x10101010
+#define MSVDX_MTX_DATA_LOCATION		0x82880000
+#define UNINITILISE_MEM			0xcdcdcdcd
+#define FIRMWARE_NAME "msvdx_fw_mfld_DE2.0.bin"
+
+/* VED FW header */
+struct ved_fw {
+	u32 ver;
+	u32 text_size;
+	u32 data_size;
+	u32 data_location;
+};
+
+
+void ved_clear_irq(struct ved_private *ved_priv)
+{
+	u32 mtx_int = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	/* Clear MTX interrupt */
+	REGIO_WRITE_FIELD_LITE(mtx_int, MSVDX_INTERRUPT_STATUS, MTX_IRQ, 1);
+	IPVR_REG_WRITE32(mtx_int, MSVDX_INTERRUPT_CLEAR_OFFSET);
+}
+
+/* following two functions also works for CLV and MFLD */
+/* IPVR_INT_ENABLE_R is set in ipvr_irq_(un)install_islands */
+void ved_disable_irq(struct ved_private *ved_priv)
+{
+	u32 enables = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	REGIO_WRITE_FIELD_LITE(enables, MSVDX_INTERRUPT_STATUS, MTX_IRQ, 0);
+	IPVR_REG_WRITE32(enables, MSVDX_HOST_INTERRUPT_ENABLE_OFFSET);
+}
+
+void ved_enable_irq(struct ved_private *ved_priv)
+{
+	u32 enables = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	/* Only enable the master core IRQ*/
+	REGIO_WRITE_FIELD_LITE(enables, MSVDX_INTERRUPT_STATUS, MTX_IRQ,
+			       1);
+	IPVR_REG_WRITE32(enables, MSVDX_HOST_INTERRUPT_ENABLE_OFFSET);
+}
+
+/*
+ * the original 1000 of udelay is derive from reference driver
+ * From Liu, Haiyang, changed the originial udelay value from 1000 to 5
+ * can save 3% C0 residence
+ */
+int
+ved_wait_for_register(struct ved_private *ved_priv,
+			    u32 offset, u32 value, u32 enable,
+			    u32 poll_cnt, u32 timeout)
+{
+	u32 reg_value = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	while (poll_cnt) {
+		reg_value = IPVR_REG_READ32(offset);
+		if (value == (reg_value & enable))
+			return 0;
+
+		/* Wait a bit */
+		IPVR_UDELAY(timeout);
+		poll_cnt--;
+	}
+	IPVR_DEBUG_REG("MSVDX: Timeout while waiting for register %08x:"
+		       " expecting %08x (mask %08x), got %08x\n",
+		       offset, value, enable, reg_value);
+
+	return -EFAULT;
+}
+
+void
+ved_set_clocks(struct ved_private *ved_priv, u32 clock_state)
+{
+	u32 old_clock_state = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	/* IPVR_DEBUG_VED("SetClocks to %x.\n", clock_state); */
+	old_clock_state = IPVR_REG_READ32(MSVDX_MAN_CLK_ENABLE_OFFSET);
+	if (old_clock_state == clock_state)
+		return;
+
+	if (clock_state == 0) {
+		/* Turn off clocks procedure */
+		if (old_clock_state) {
+			/* Turn off all the clocks except core */
+			IPVR_REG_WRITE32(
+				MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK,
+				MSVDX_MAN_CLK_ENABLE_OFFSET);
+
+			/* Make sure all the clocks are off except core */
+			ved_wait_for_register(ved_priv,
+				MSVDX_MAN_CLK_ENABLE_OFFSET,
+				MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK,
+				0xffffffff, 2000000, 5);
+
+			/* Turn off core clock */
+			IPVR_REG_WRITE32(0, MSVDX_MAN_CLK_ENABLE_OFFSET);
+		}
+	} else {
+		u32 clocks_en = clock_state;
+
+		/*Make sure that core clock is not accidentally turned off */
+		clocks_en |= MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK;
+
+		/* If all clocks were disable do the bring up procedure */
+		if (old_clock_state == 0) {
+			/* turn on core clock */
+			IPVR_REG_WRITE32(
+				MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK,
+				MSVDX_MAN_CLK_ENABLE_OFFSET);
+
+			/* Make sure core clock is on */
+			ved_wait_for_register(ved_priv,
+				MSVDX_MAN_CLK_ENABLE_OFFSET,
+				MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK,
+				0xffffffff, 2000000, 5);
+
+			/* turn on the other clocks as well */
+			IPVR_REG_WRITE32(clocks_en, MSVDX_MAN_CLK_ENABLE_OFFSET);
+
+			/* Make sure that all they are on */
+			ved_wait_for_register(ved_priv,
+					MSVDX_MAN_CLK_ENABLE_OFFSET,
+					clocks_en, 0xffffffff, 2000000, 5);
+		} else {
+			IPVR_REG_WRITE32(clocks_en, MSVDX_MAN_CLK_ENABLE_OFFSET);
+
+			/* Make sure that they are on */
+			ved_wait_for_register(ved_priv,
+					MSVDX_MAN_CLK_ENABLE_OFFSET,
+					clocks_en, 0xffffffff, 2000000, 5);
+		}
+	}
+}
+
+int ved_core_reset(struct ved_private *ved_priv)
+{
+	int ret = 0;
+	int loop;
+	u32 cmd;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	/* Enable Clocks */
+	IPVR_DEBUG_GENERAL("Enabling clocks.\n");
+	ved_set_clocks(ved_priv, clk_enable_all);
+
+	/* Always pause the MMU as the core may be still active
+	 * when resetting.  It is very bad to have memory
+	 * activity at the same time as a reset - Very Very bad
+	 */
+	IPVR_REG_WRITE32(2, MSVDX_MMU_CONTROL0_OFFSET);
+
+	/* BRN26106, BRN23944, BRN33671 */
+	/* This is neccessary for all cores up to Tourmaline */
+	if ((IPVR_REG_READ32(MSVDX_CORE_REV_OFFSET) < 0x00050502) &&
+		(IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET)
+			& MSVDX_INTERRUPT_STATUS_MMU_FAULT_IRQ_MASK) &&
+		(IPVR_REG_READ32(MSVDX_MMU_STATUS_OFFSET) & 1)) {
+		u32 *pptd;
+		int loop;
+		unsigned long ptd_addr;
+
+		/* do work around */
+		ptd_addr = page_to_pfn(ved_priv->mmu_recover_page) << PAGE_SHIFT;
+		/* fixme: check ptd_addr bit length */
+		pptd = kmap(ved_priv->mmu_recover_page);
+		if (!pptd) {
+			IPVR_ERROR("failed to kmap mmu recover page.\n");
+			return -ENOMEM;
+		}
+		for (loop = 0; loop < 1024; loop++)
+			pptd[loop] = ptd_addr | 0x00000003;
+		IPVR_REG_WRITE32(ptd_addr, MSVDX_MMU_DIR_LIST_BASE_OFFSET +  0);
+		IPVR_REG_WRITE32(ptd_addr, MSVDX_MMU_DIR_LIST_BASE_OFFSET +  4);
+		IPVR_REG_WRITE32(ptd_addr, MSVDX_MMU_DIR_LIST_BASE_OFFSET +  8);
+		IPVR_REG_WRITE32(ptd_addr, MSVDX_MMU_DIR_LIST_BASE_OFFSET + 12);
+
+		IPVR_REG_WRITE32(6, MSVDX_MMU_CONTROL0_OFFSET);
+		IPVR_REG_WRITE32(MSVDX_INTERRUPT_STATUS_MMU_FAULT_IRQ_MASK,
+					MSVDX_INTERRUPT_STATUS_OFFSET);
+		kunmap(ved_priv->mmu_recover_page);
+	}
+
+	/* make sure *ALL* outstanding reads have gone away */
+	for (loop = 0; loop < 10; loop++)
+		ret = ved_wait_for_register(ved_priv, MSVDX_MMU_MEM_REQ_OFFSET,
+					    0, 0xff, 100, 1);
+	if (ret) {
+		IPVR_DEBUG_WARN("MSVDX_MMU_MEM_REQ is %d,\n"
+			"indicate outstanding read request 0.\n",
+			IPVR_REG_READ32(MSVDX_MMU_MEM_REQ_OFFSET));
+		ret = -1;
+		return ret;
+	}
+	/* disconnect RENDEC decoders from memory */
+	cmd = IPVR_REG_READ32(MSVDX_RENDEC_CONTROL1_OFFSET);
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_CONTROL1, RENDEC_DEC_DISABLE, 1);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTROL1_OFFSET);
+
+	/* Issue software reset for all but core */
+	IPVR_REG_WRITE32((unsigned int)~MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK,
+			MSVDX_CONTROL_OFFSET);
+	IPVR_REG_READ32(MSVDX_CONTROL_OFFSET);
+	/* bit format is set as little endian */
+	IPVR_REG_WRITE32(0, MSVDX_CONTROL_OFFSET);
+	/* make sure read requests are zero */
+	ret = ved_wait_for_register(ved_priv, MSVDX_MMU_MEM_REQ_OFFSET,
+				    0, 0xff, 100, 100);
+	if (!ret) {
+		/* Issue software reset */
+		IPVR_REG_WRITE32(MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK,
+				MSVDX_CONTROL_OFFSET);
+
+		ret = ved_wait_for_register(ved_priv, MSVDX_CONTROL_OFFSET, 0,
+					MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK,
+					2000000, 5);
+		if (!ret) {
+			/* Clear interrupt enabled flag */
+			IPVR_REG_WRITE32(0, MSVDX_HOST_INTERRUPT_ENABLE_OFFSET);
+
+			/* Clear any pending interrupt flags */
+			IPVR_REG_WRITE32(0xFFFFFFFF, MSVDX_INTERRUPT_CLEAR_OFFSET);
+		} else {
+			IPVR_DEBUG_WARN("MSVDX_CONTROL_OFFSET is %d,\n"
+				"indicate software reset failed.\n",
+				IPVR_REG_READ32(MSVDX_CONTROL_OFFSET));
+		}
+	} else {
+		IPVR_DEBUG_WARN("MSVDX_MMU_MEM_REQ is %d,\n"
+			"indicate outstanding read request 1.\n",
+			IPVR_REG_READ32(MSVDX_MMU_MEM_REQ_OFFSET));
+	}
+	return ret;
+}
+
+/*
+ * Reset chip and disable interrupts.
+ * Return 0 success, 1 failure
+ * use ved_core_reset instead of ved_reset
+ */
+int ved_reset(struct ved_private *ved_priv)
+{
+	int ret = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	/* Issue software reset */
+	/* IPVR_REG_WRITE32(msvdx_sw_reset_all, MSVDX_CONTROL); */
+	IPVR_REG_WRITE32(MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK,
+			MSVDX_CONTROL_OFFSET);
+
+	ret = ved_wait_for_register(ved_priv, MSVDX_CONTROL_OFFSET, 0,
+			MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK, 2000000, 5);
+	if (!ret) {
+		/* Clear interrupt enabled flag */
+		IPVR_REG_WRITE32(0, MSVDX_HOST_INTERRUPT_ENABLE_OFFSET);
+
+		/* Clear any pending interrupt flags */
+		IPVR_REG_WRITE32(0xFFFFFFFF, MSVDX_INTERRUPT_CLEAR_OFFSET);
+	} else {
+		IPVR_DEBUG_WARN("MSVDX_CONTROL_OFFSET is %d,\n"
+			"indicate software reset failed.\n",
+			IPVR_REG_READ32(MSVDX_CONTROL_OFFSET));
+	}
+
+	return ret;
+}
+
+static int ved_alloc_ccb_for_rendec(struct ved_private *ved_priv,
+										int32_t ccb0_size,
+										int32_t ccb1_size)
+{
+	int ret;
+	size_t size;
+	u8 *ccb0_addr = NULL;
+	u8 *ccb1_addr = NULL;
+
+	IPVR_DEBUG_INIT("VED: setting up RENDEC, allocate CCB 0/1\n");
+
+	/*handling for ccb0*/
+	if (ved_priv->ccb0 == NULL) {
+		size = roundup(ccb0_size, PAGE_SIZE);
+		if (size == 0)
+			return -EINVAL;
+
+		/* Allocate the new object */
+		ved_priv->ccb0 = ipvr_gem_create(ved_priv->dev_priv, size, 0, 0);
+		if (IS_ERR(ved_priv->ccb0)) {
+			ret = PTR_ERR(ved_priv->ccb0);
+			IPVR_ERROR("VED: failed to allocate ccb0 buffer: %d.\n", ret);
+			ved_priv->ccb0 = NULL;
+			return -ENOMEM;
+		}
+
+		ved_priv->base_addr0 = ipvr_gem_object_mmu_offset(ved_priv->ccb0);
+
+		ccb0_addr = ipvr_gem_object_vmap(ved_priv->ccb0);
+		if (!ccb0_addr) {
+			ret = -ENOMEM;
+			IPVR_ERROR("VED: kmap failed for ccb0 buffer: %d.\n", ret);
+			goto err_free_ccb0;
+		}
+
+		memset(ccb0_addr, 0, size);
+		vunmap(ccb0_addr);
+	}
+
+	/*handling for ccb1*/
+	if (ved_priv->ccb1 == NULL) {
+		size = roundup(ccb1_size, PAGE_SIZE);
+		if (size == 0) {
+			return -EINVAL;
+			goto err_free_ccb0;
+		}
+
+		/* Allocate the new object */
+		ved_priv->ccb1 = ipvr_gem_create(ved_priv->dev_priv, size, 0, 0);
+		if (IS_ERR(ved_priv->ccb1)) {
+			ret = PTR_ERR(ved_priv->ccb1);
+			IPVR_ERROR("VED: failed to allocate ccb1 buffer: %d.\n", ret);
+			goto err_free_ccb0;
+		}
+
+		ved_priv->base_addr1 = ipvr_gem_object_mmu_offset(ved_priv->ccb1);
+
+		ccb1_addr = ipvr_gem_object_vmap(ved_priv->ccb1);
+		if (!ccb1_addr) {
+			ret = -ENOMEM;
+			IPVR_ERROR("VED: kmap failed for ccb1 buffer: %d.\n", ret);
+			goto err_free_ccb1;
+		}
+
+		memset(ccb1_addr, 0, size);
+		vunmap(ccb1_addr);
+	}
+
+	IPVR_DEBUG_INIT("VED: RENDEC A: %08x RENDEC B: %08x\n",
+			ved_priv->base_addr0, ved_priv->base_addr1);
+
+	return 0;
+err_free_ccb1:
+	drm_gem_object_unreference_unlocked(&ved_priv->ccb1->base);
+	ved_priv->ccb1 = NULL;
+err_free_ccb0:
+	drm_gem_object_unreference_unlocked(&ved_priv->ccb0->base);
+	ved_priv->ccb0 = NULL;
+	return ret;
+}
+
+static void ved_free_ccb(struct ved_private *ved_priv)
+{
+	if (ved_priv->ccb0) {
+		drm_gem_object_unreference_unlocked(&ved_priv->ccb0->base);
+		ved_priv->ccb0 = NULL;
+	}
+	if (ved_priv->ccb1) {
+		drm_gem_object_unreference_unlocked(&ved_priv->ccb1->base);
+		ved_priv->ccb1 = NULL;
+	}
+}
+
+static void ved_rendec_init_by_reg(struct ved_private *ved_priv)
+{
+	u32 cmd;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+
+	IPVR_REG_WRITE32(ved_priv->base_addr0, MSVDX_RENDEC_BASE_ADDR0_OFFSET);
+	IPVR_REG_WRITE32(ved_priv->base_addr1, MSVDX_RENDEC_BASE_ADDR1_OFFSET);
+
+	cmd = 0;
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_BUFFER_SIZE,
+			RENDEC_BUFFER_SIZE0, RENDEC_A_SIZE / 4096);
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_BUFFER_SIZE,
+			RENDEC_BUFFER_SIZE1, RENDEC_B_SIZE / 4096);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_BUFFER_SIZE_OFFSET);
+
+	cmd = 0;
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_CONTROL1,
+			RENDEC_DECODE_START_SIZE, 0);
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_CONTROL1,
+			RENDEC_BURST_SIZE_W, 1);
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_CONTROL1,
+			RENDEC_BURST_SIZE_R, 1);
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_CONTROL1,
+			RENDEC_EXTERNAL_MEMORY, 1);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTROL1_OFFSET);
+
+	cmd = 0x00101010;
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTEXT0_OFFSET);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTEXT1_OFFSET);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTEXT2_OFFSET);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTEXT3_OFFSET);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTEXT4_OFFSET);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTEXT5_OFFSET);
+
+	cmd = 0;
+	REGIO_WRITE_FIELD(cmd, MSVDX_RENDEC_CONTROL0, RENDEC_INITIALISE, 1);
+	IPVR_REG_WRITE32(cmd, MSVDX_RENDEC_CONTROL0_OFFSET);
+}
+
+int ved_rendec_init_by_msg(struct ved_private *ved_priv)
+{
+	/* at this stage, FW is uplaoded successfully,
+	 * can send RENDEC init message */
+	struct fw_init_msg init_msg;
+	init_msg.header.bits.msg_size = sizeof(struct fw_init_msg);
+	init_msg.header.bits.msg_type = MTX_MSGID_INIT;
+	init_msg.rendec_addr0 = ved_priv->base_addr0;
+	init_msg.rendec_addr1 = ved_priv->base_addr1;
+	init_msg.rendec_size.bits.rendec_size0 = RENDEC_A_SIZE / (4 * 1024);
+	init_msg.rendec_size.bits.rendec_size1 = RENDEC_B_SIZE / (4 * 1024);
+	return ved_mtx_send(ved_priv, (void *)&init_msg);
+}
+
+static void ved_get_mtx_control_from_dash(struct ved_private *ved_priv)
+{
+	int count = 0;
+	u32 reg_val = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+
+	REGIO_WRITE_FIELD(reg_val, MSVDX_MTX_DEBUG, MTX_DBG_IS_SLAVE, 1);
+	REGIO_WRITE_FIELD(reg_val, MSVDX_MTX_DEBUG, MTX_DBG_GPIO_IN, 0x02);
+	IPVR_REG_WRITE32(reg_val, MSVDX_MTX_DEBUG_OFFSET);
+
+	do {
+		reg_val = IPVR_REG_READ32(MSVDX_MTX_DEBUG_OFFSET);
+		count++;
+	} while (((reg_val & 0x18) != 0) && count < 50000);
+
+	if (count >= 50000)
+		IPVR_DEBUG_VED("VED: timeout in get_mtx_control_from_dash.\n");
+
+	/* Save the access control register...*/
+	ved_priv->ved_dash_access_ctrl = IPVR_REG_READ32(MTX_RAM_ACCESS_CONTROL_OFFSET);
+}
+
+static void
+ved_release_mtx_control_from_dash(struct ved_private *ved_priv)
+{
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	/* restore access control */
+	IPVR_REG_WRITE32(ved_priv->ved_dash_access_ctrl, MTX_RAM_ACCESS_CONTROL_OFFSET);
+	/* release bus */
+	IPVR_REG_WRITE32(0x4, MSVDX_MTX_DEBUG_OFFSET);
+}
+
+/* for future debug info of msvdx related registers */
+static void
+ved_setup_fw_dump(struct ved_private *ved_priv, u32 dma_channel)
+{
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	IPVR_DEBUG_REG("dump registers during fw upload for debug:\n");
+	/* for DMAC REGISTER */
+	IPVR_DEBUG_REG("MTX_SYSC_CDMAA is 0x%x\n",
+			IPVR_REG_READ32(MTX_SYSC_CDMAA_OFFSET));
+	IPVR_DEBUG_REG("MTX_SYSC_CDMAC value is 0x%x\n",
+			IPVR_REG_READ32(MTX_SYSC_CDMAC_OFFSET));
+	IPVR_DEBUG_REG("DMAC_SETUP value is 0x%x\n",
+			IPVR_REG_READ32(DMAC_DMAC_SETUP_OFFSET + dma_channel));
+	IPVR_DEBUG_REG("DMAC_DMAC_COUNT value is 0x%x\n",
+			IPVR_REG_READ32(DMAC_DMAC_COUNT_OFFSET + dma_channel));
+	IPVR_DEBUG_REG("DMAC_DMAC_PERIPH_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(DMAC_DMAC_PERIPH_OFFSET + dma_channel));
+	IPVR_DEBUG_REG("DMAC_DMAC_PERIPHERAL_ADDR value is 0x%x\n",
+			IPVR_REG_READ32(DMAC_DMAC_PERIPHERAL_ADDR_OFFSET +
+				       dma_channel));
+	IPVR_DEBUG_REG("MSVDX_CONTROL value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_CONTROL_OFFSET));
+	IPVR_DEBUG_REG("DMAC_DMAC_IRQ_STAT value is 0x%x\n",
+			IPVR_REG_READ32(DMAC_DMAC_IRQ_STAT_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_MMU_CONTROL0 value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_MMU_CONTROL0_OFFSET));
+	IPVR_DEBUG_REG("DMAC_DMAC_COUNT 2222 value is 0x%x\n",
+			IPVR_REG_READ32(DMAC_DMAC_COUNT_OFFSET + dma_channel));
+
+	/* for MTX REGISTER */
+	IPVR_DEBUG_REG("MTX_ENABLE_OFFSET is 0x%x\n",
+			IPVR_REG_READ32(MTX_ENABLE_OFFSET));
+	IPVR_DEBUG_REG("MTX_KICK_INPUT_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_KICK_INPUT_OFFSET));
+	IPVR_DEBUG_REG("MTX_REG_READ_WRITE_REQUEST_OFFSET value is 0x%x\n",
+		IPVR_REG_READ32(MTX_REGISTER_READ_WRITE_REQUEST_OFFSET));
+	IPVR_DEBUG_REG("MTX_RAM_ACCESS_CONTROL_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_RAM_ACCESS_CONTROL_OFFSET));
+	IPVR_DEBUG_REG("MTX_RAM_ACCESS_STATUS_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_RAM_ACCESS_STATUS_OFFSET));
+	IPVR_DEBUG_REG("MTX_SYSC_TIMERDIV_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_SYSC_TIMERDIV_OFFSET));
+	IPVR_DEBUG_REG("MTX_SYSC_CDMAC_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_SYSC_CDMAC_OFFSET));
+	IPVR_DEBUG_REG("MTX_SYSC_CDMAA_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_SYSC_CDMAA_OFFSET));
+	IPVR_DEBUG_REG("MTX_SYSC_CDMAS0_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_SYSC_CDMAS0_OFFSET));
+	IPVR_DEBUG_REG("MTX_SYSC_CDMAT_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MTX_SYSC_CDMAT_OFFSET));
+
+	/* for MSVDX CORE REGISTER */
+	IPVR_DEBUG_REG("MSVDX_CONTROL_OFFSET is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_CONTROL_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_INTERRUPT_CLEAR_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_INTERRUPT_CLEAR_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_INTERRUPT_STATUS_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_INTERRUPT_STATUS_OFFSET));
+	IPVR_DEBUG_REG("MMSVDX_HOST_INTERRUPT_ENABLE_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_HOST_INTERRUPT_ENABLE_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_MAN_CLK_ENABLE_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_MAN_CLK_ENABLE_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_CORE_ID_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_CORE_ID_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_MMU_STATUS_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_MMU_STATUS_OFFSET));
+	IPVR_DEBUG_REG("FE_MSVDX_WDT_CONTROL_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(FE_MSVDX_WDT_CONTROL_OFFSET));
+	IPVR_DEBUG_REG("FE_MSVDX_WDTIMER_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(FE_MSVDX_WDTIMER_OFFSET));
+	IPVR_DEBUG_REG("BE_MSVDX_WDT_CONTROL_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(BE_MSVDX_WDT_CONTROL_OFFSET));
+	IPVR_DEBUG_REG("BE_MSVDX_WDTIMER_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(BE_MSVDX_WDTIMER_OFFSET));
+
+	/* for MSVDX RENDEC REGISTER */
+	IPVR_DEBUG_REG("VEC_SHIFTREG_CONTROL_OFFSET is 0x%x\n",
+			IPVR_REG_READ32(VEC_SHIFTREG_CONTROL_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_RENDEC_CONTROL0_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_RENDEC_CONTROL0_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_RENDEC_BUFFER_SIZE_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_RENDEC_BUFFER_SIZE_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_RENDEC_BASE_ADDR0_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_RENDEC_BASE_ADDR0_OFFSET));
+	IPVR_DEBUG_REG("MMSVDX_RENDEC_BASE_ADDR1_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_RENDEC_BASE_ADDR1_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_RENDEC_READ_DATA_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_RENDEC_READ_DATA_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_RENDEC_CONTEXT0_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_RENDEC_CONTEXT0_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_RENDEC_CONTEXT1_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_RENDEC_CONTEXT1_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_CMDS_END_SLICE_PICTURE_OFFSET value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_CMDS_END_SLICE_PICTURE_OFFSET));
+
+	IPVR_DEBUG_REG("MSVDX_MMU_MEM_REQ value is 0x%x\n",
+			IPVR_REG_READ32(MSVDX_MMU_MEM_REQ_OFFSET));
+	IPVR_DEBUG_REG("MSVDX_SYS_MEMORY_DEBUG2 value is 0x%x\n",
+			IPVR_REG_READ32(0x6fc));
+}
+
+static void ved_upload_fw(struct ved_private *ved_priv,
+				u32 address, const u32 words)
+{
+	u32 reg_val = 0;
+	u32 cmd;
+	u32 uCountReg, offset, mmu_ptd;
+	u32 size = words * 4; /* byte count */
+	u32 dma_channel = 0; /* Setup a Simple DMA for Ch0 */
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+
+	IPVR_DEBUG_VED("VED: Upload firmware by DMA.\n");
+	ved_get_mtx_control_from_dash(ved_priv);
+
+	/*
+	 * dma transfers to/from the mtx have to be 32-bit aligned and
+	 * in multiples of 32 bits
+	 */
+	IPVR_REG_WRITE32(address, MTX_SYSC_CDMAA_OFFSET);
+
+	/* burst size in multiples of 64 bits (allowed values are 2 or 4) */
+	REGIO_WRITE_FIELD_LITE(reg_val, MTX_SYSC_CDMAC, BURSTSIZE, 4);
+	/* false means write to mtx mem, true means read from mtx mem */
+	REGIO_WRITE_FIELD_LITE(reg_val, MTX_SYSC_CDMAC, RNW, 0);
+	/* begin transfer */
+	REGIO_WRITE_FIELD_LITE(reg_val, MTX_SYSC_CDMAC, ENABLE,	1);
+	/* specifies transfer size of the DMA operation by 32-bit words */
+	REGIO_WRITE_FIELD_LITE(reg_val, MTX_SYSC_CDMAC, LENGTH,	words);
+	IPVR_REG_WRITE32(reg_val, MTX_SYSC_CDMAC_OFFSET);
+
+	/* toggle channel 0 usage between mtx and other msvdx peripherals */
+	{
+		reg_val = IPVR_REG_READ32(MSVDX_CONTROL_OFFSET);
+		REGIO_WRITE_FIELD(reg_val, MSVDX_CONTROL, DMAC_CH0_SELECT,  0);
+		IPVR_REG_WRITE32(reg_val, MSVDX_CONTROL_OFFSET);
+	}
+
+	/* Clear the DMAC Stats */
+	IPVR_REG_WRITE32(0 , DMAC_DMAC_IRQ_STAT_OFFSET + dma_channel);
+
+	offset = ved_priv->fw_offset;
+	IPVR_DEBUG_VED("fw mmu offset is 0x%x.\n", offset);
+
+	/* use bank 0 */
+	cmd = 0;
+	IPVR_REG_WRITE32(cmd, MSVDX_MMU_BANK_INDEX_OFFSET);
+
+	/* Write PTD to mmu base 0*/
+	mmu_ptd = ipvr_get_default_pd_addr32(ved_priv->dev_priv->mmu);
+	BUG_ON(mmu_ptd == 0);
+	IPVR_REG_WRITE32(mmu_ptd, MSVDX_MMU_DIR_LIST_BASE_OFFSET + 0);
+	IPVR_DEBUG_VED("mmu_ptd is %d.\n", mmu_ptd);
+
+	/* Invalidate */
+	reg_val = IPVR_REG_READ32(MSVDX_MMU_CONTROL0_OFFSET);
+	reg_val &= ~0xf;
+	REGIO_WRITE_FIELD(reg_val, MSVDX_MMU_CONTROL0, MMU_INVALDC, 1);
+	IPVR_REG_WRITE32(reg_val, MSVDX_MMU_CONTROL0_OFFSET);
+
+	IPVR_REG_WRITE32(offset, DMAC_DMAC_SETUP_OFFSET + dma_channel);
+
+	/* Only use a single dma - assert that this is valid */
+	if ((size >> 2) >= (1 << 15)) {
+		IPVR_ERROR("DMA size beyond limit, abort firmware upload.\n");
+		return;
+	}
+
+	uCountReg = IPVR_DMAC_VALUE_COUNT(IPVR_DMAC_BSWAP_NO_SWAP, 0,
+					 IPVR_DMAC_DIR_MEM_TO_PERIPH, 0, (size >> 2));
+	/* Set the number of bytes to dma*/
+	IPVR_REG_WRITE32(uCountReg, DMAC_DMAC_COUNT_OFFSET + dma_channel);
+
+	cmd = IPVR_DMAC_VALUE_PERIPH_PARAM(IPVR_DMAC_ACC_DEL_0,
+					  IPVR_DMAC_INCR_OFF,
+					  IPVR_DMAC_BURST_2);
+	IPVR_REG_WRITE32(cmd, DMAC_DMAC_PERIPH_OFFSET + dma_channel);
+
+	/* Set destination port for dma */
+	cmd = 0;
+	REGIO_WRITE_FIELD(cmd, DMAC_DMAC_PERIPHERAL_ADDR, ADDR,
+			  MTX_SYSC_CDMAT_OFFSET);
+	IPVR_REG_WRITE32(cmd, DMAC_DMAC_PERIPHERAL_ADDR_OFFSET + dma_channel);
+
+
+	/* Finally, rewrite the count register with the enable bit set */
+	IPVR_REG_WRITE32(uCountReg | DMAC_DMAC_COUNT_EN_MASK,
+			DMAC_DMAC_COUNT_OFFSET + dma_channel);
+
+	/* Wait for all to be done */
+	if (ved_wait_for_register(ved_priv,
+				  DMAC_DMAC_IRQ_STAT_OFFSET + dma_channel,
+				  DMAC_DMAC_IRQ_STAT_TRANSFER_FIN_MASK,
+				  DMAC_DMAC_IRQ_STAT_TRANSFER_FIN_MASK,
+				  2000000, 5)) {
+		ved_setup_fw_dump(ved_priv, dma_channel);
+		ved_release_mtx_control_from_dash(ved_priv);
+		return;
+	}
+
+	/* Assert that the MTX DMA port is all done aswell */
+	if (ved_wait_for_register(ved_priv,
+			MTX_SYSC_CDMAS0_OFFSET,
+			1, 1, 2000000, 5)) {
+		ved_release_mtx_control_from_dash(ved_priv);
+		return;
+	}
+
+	ved_release_mtx_control_from_dash(ved_priv);
+
+	IPVR_DEBUG_VED("VED: Upload done\n");
+}
+
+static int ved_get_fw_bo(struct ved_private *ved_priv,
+				   const struct firmware **raw, char *name)
+{
+	int rc = 0;
+	size_t fw_size;
+	void *ptr = NULL;
+	void *fw_bo_addr = NULL;
+	u32 *last_word;
+	struct ved_fw *fw;
+
+	rc = request_firmware(raw, name, &ved_priv->dev_priv->dev->platformdev->dev);
+	if (rc)
+		return rc;
+
+	if (!*raw) {
+		rc = -ENOMEM;
+		IPVR_ERROR("VED: %s request_firmware failed: Reason %d.\n", name, rc);
+		goto out;
+	}
+
+	if ((*raw)->size < sizeof(struct ved_fw)) {
+		rc = -ENOMEM;
+		IPVR_ERROR("VED: %s is is not correct size(%zd).\n", name, (*raw)->size);
+		goto out;
+	}
+
+	ptr = (void *)((*raw))->data;
+	if (!ptr) {
+		rc = -ENOMEM;
+		IPVR_ERROR("VED: Failed to load %s.\n", name);
+		goto out;
+	}
+
+	/* another sanity check... */
+	fw_size = sizeof(struct ved_fw) +
+		  sizeof(u32) * ((struct ved_fw *) ptr)->text_size +
+		  sizeof(u32) * ((struct ved_fw *) ptr)->data_size;
+	if ((*raw)->size < fw_size) {
+		rc = -ENOMEM;
+		IPVR_ERROR("VED: %s is is not correct size(%zd).\n",
+			  name, (*raw)->size);
+		goto out;
+	}
+
+	fw_bo_addr = ipvr_gem_object_vmap(ved_priv->fw_bo);
+	if (!fw_bo_addr) {
+		rc = -ENOMEM;
+		IPVR_ERROR("VED: kmap failed for fw buffer.\n");
+		goto out;
+	}
+
+	fw = (struct ved_fw *)ptr;
+	memset(fw_bo_addr, UNINITILISE_MEM, ved_priv->mtx_mem_size);
+	memcpy(fw_bo_addr, ptr + sizeof(struct ved_fw),
+	       sizeof(u32) * fw->text_size);
+	memcpy(fw_bo_addr + (fw->data_location - MSVDX_MTX_DATA_LOCATION),
+	       (void *)ptr + sizeof(struct ved_fw) + sizeof(u32) * fw->text_size,
+	       sizeof(u32) * fw->data_size);
+	last_word = (u32 *)(fw_bo_addr + ved_priv->mtx_mem_size - 4);
+	/*
+	 * Write a know value to last word in mtx memory
+	 * Usefull for detection of stack overrun
+	 */
+	*last_word = STACKGUARDWORD;
+
+	vunmap(fw_bo_addr);
+	IPVR_DEBUG_VED("VED: releasing firmware resouces.\n");
+	IPVR_DEBUG_VED("VED: Load firmware into BO successfully.\n");
+out:
+	release_firmware(*raw);
+	return rc;
+}
+
+static u32 *
+ved_get_fw(struct ved_private *ved_priv, const struct firmware **raw, char *name)
+{
+	int rc = 0;
+	size_t fw_size;
+	void *ptr = NULL;
+	struct ved_fw *fw;
+	ved_priv->ved_fw_ptr = NULL;
+
+	rc = request_firmware(raw, name, &ved_priv->dev_priv->dev->platformdev->dev);
+	if (rc)
+		return NULL;
+
+	if (!*raw) {
+		IPVR_ERROR("VED: %s request_firmware failed: Reason %d\n",
+			  name, rc);
+		goto out;
+	}
+
+	if ((*raw)->size < sizeof(struct ved_fw)) {
+		IPVR_ERROR("VED: %s is is not correct size(%zd)\n",
+			  name, (*raw)->size);
+		goto out;
+	}
+
+	ptr = (int *)((*raw))->data;
+	if (!ptr) {
+		IPVR_ERROR("VED: Failed to load %s.\n", name);
+		goto out;
+	}
+	fw = (struct ved_fw *)ptr;
+
+	/* another sanity check... */
+	fw_size = sizeof(fw) +
+		  sizeof(u32) * fw->text_size +
+		  sizeof(u32) * fw->data_size;
+	if ((*raw)->size < fw_size) {
+		IPVR_ERROR("VED: %s is is not correct size(%zd).\n",
+			   name, (*raw)->size);
+		goto out;
+	}
+
+	ved_priv->ved_fw_ptr = kzalloc(fw_size, GFP_KERNEL);
+	if (!ved_priv->ved_fw_ptr)
+		IPVR_ERROR("VED: allocate FW buffer failed.\n");
+	else {
+		memcpy(ved_priv->ved_fw_ptr, ptr, fw_size);
+		ved_priv->ved_fw_size = fw_size;
+	}
+
+out:
+	IPVR_DEBUG_VED("VED: releasing firmware resouces.\n");
+	release_firmware(*raw);
+	return ved_priv->ved_fw_ptr;
+}
+
+static void
+ved_write_mtx_core_reg(struct ved_private *ved_priv,
+			       const u32 core_reg, const u32 val)
+{
+	u32 reg = 0;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+
+	/* Put data in MTX_RW_DATA */
+	IPVR_REG_WRITE32(val, MTX_REGISTER_READ_WRITE_DATA_OFFSET);
+
+	/* DREADY is set to 0 and request a write */
+	reg = core_reg;
+	REGIO_WRITE_FIELD_LITE(reg, MTX_REGISTER_READ_WRITE_REQUEST,
+			       MTX_RNW, 0);
+	REGIO_WRITE_FIELD_LITE(reg, MTX_REGISTER_READ_WRITE_REQUEST,
+			       MTX_DREADY, 0);
+	IPVR_REG_WRITE32(reg, MTX_REGISTER_READ_WRITE_REQUEST_OFFSET);
+
+	ved_wait_for_register(ved_priv,
+			      MTX_REGISTER_READ_WRITE_REQUEST_OFFSET,
+			      MTX_REGISTER_READ_WRITE_REQUEST_MTX_DREADY_MASK,
+			      MTX_REGISTER_READ_WRITE_REQUEST_MTX_DREADY_MASK,
+			      2000000, 5);
+}
+
+int ved_alloc_fw_bo(struct ved_private *ved_priv)
+{
+	u32 core_rev;
+	int ret;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+
+	core_rev = IPVR_REG_READ32(MSVDX_CORE_REV_OFFSET);
+
+	if ((core_rev & 0xffffff) < 0x020000)
+		ved_priv->mtx_mem_size = 16 * 1024;
+	else
+		ved_priv->mtx_mem_size = 56 * 1024;
+
+	IPVR_DEBUG_INIT("VED: MTX mem size is 0x%08x bytes,"
+			"allocate firmware BO size 0x%08x.\n",
+			ved_priv->mtx_mem_size,
+			ved_priv->mtx_mem_size + 4096);
+
+	/* Allocate the new object */
+	ved_priv->fw_bo = ipvr_gem_create(ved_priv->dev_priv,
+						ved_priv->mtx_mem_size + 4096, 0, 0);
+	if (IS_ERR(ved_priv->fw_bo)) {
+		IPVR_ERROR("VED: failed to allocate fw buffer: %ld.\n",
+			PTR_ERR(ved_priv->fw_bo));
+		ved_priv->fw_bo = NULL;
+		return -ENOMEM;
+	}
+	ved_priv->fw_offset = ipvr_gem_object_mmu_offset(ved_priv->fw_bo);
+	if (IPVR_IS_ERR(ved_priv->fw_offset)) {
+		ved_priv->fw_bo = NULL;
+		goto err_free_fw_bo;
+	}
+	return 0;
+err_free_fw_bo:
+	drm_gem_object_unreference_unlocked(&ved_priv->fw_bo->base);
+	return ret;
+}
+
+int ved_setup_fw(struct ved_private *ved_priv)
+{
+	u32 ram_bank_size;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+	int ret = 0;
+	struct ved_fw *fw;
+	u32 *fw_ptr = NULL;
+	u32 *text_ptr = NULL;
+	u32 *data_ptr = NULL;
+	const struct firmware *raw = NULL;
+
+	/* todo : Assert the clock is on - if not turn it on to upload code */
+	IPVR_DEBUG_VED("VED: ved_setup_fw.\n");
+
+	ved_set_clocks(ved_priv, clk_enable_all);
+
+	/* Reset MTX */
+	IPVR_REG_WRITE32(MTX_SOFT_RESET_MTX_RESET_MASK,
+			MTX_SOFT_RESET_OFFSET);
+
+	IPVR_REG_WRITE32(FIRMWAREID, MSVDX_COMMS_FIRMWARE_ID);
+
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_ERROR_TRIG);
+	IPVR_REG_WRITE32(199, MTX_SYSC_TIMERDIV_OFFSET); /* MTX_SYSC_TIMERDIV */
+	IPVR_REG_WRITE32(0, MSVDX_EXT_FW_ERROR_STATE); /* EXT_FW_ERROR_STATE */
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_MSG_COUNTER);
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_SIGNATURE);
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_TO_HOST_RD_INDEX);
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_TO_HOST_WRT_INDEX);
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_TO_MTX_RD_INDEX);
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_TO_MTX_WRT_INDEX);
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_FW_STATUS);
+	IPVR_REG_WRITE32(DSIABLE_IDLE_GPIO_SIG |
+			DSIABLE_Auto_CLOCK_GATING |
+			RETURN_VDEB_DATA_IN_COMPLETION |
+			NOT_ENABLE_ON_HOST_CONCEALMENT,
+			MSVDX_COMMS_OFFSET_FLAGS);
+	IPVR_REG_WRITE32(0, MSVDX_COMMS_SIGNATURE);
+
+	/* read register bank size */
+	{
+		u32 bank_size, reg;
+		reg = IPVR_REG_READ32(MSVDX_MTX_RAM_BANK_OFFSET);
+		bank_size =
+			REGIO_READ_FIELD(reg, MSVDX_MTX_RAM_BANK,
+					 MTX_RAM_BANK_SIZE);
+		ram_bank_size = (u32)(1 << (bank_size + 2));
+	}
+
+	IPVR_DEBUG_VED("VED: RAM bank size = %d bytes\n", ram_bank_size);
+
+	/* if FW already loaded from storage */
+	if (ved_priv->ved_fw_ptr) {
+		fw_ptr = ved_priv->ved_fw_ptr;
+	} else {
+		fw_ptr = ved_get_fw(ved_priv, &raw, FIRMWARE_NAME);
+		IPVR_DEBUG_VED("VED:load msvdx_fw_mfld_DE2.0.bin by udevd\n");
+	}
+	if (!fw_ptr) {
+		IPVR_ERROR("VED:load ved_fw.bin failed,is udevd running?\n");
+		ret = 1;
+		goto out;
+	}
+
+	if (!ved_priv->fw_loaded_to_bo) { /* Load firmware into BO */
+		IPVR_DEBUG_VED("MSVDX:load ved_fw.bin by udevd into BO\n");
+		ret = ved_get_fw_bo(ved_priv, &raw, FIRMWARE_NAME);
+		if (ret) {
+			IPVR_ERROR("VED: failed to call ved_get_fw_bo: %d.\n", ret);
+			goto out;
+		}
+		ved_priv->fw_loaded_to_bo = true;
+	}
+
+	fw = (struct ved_fw *) fw_ptr;
+
+	/* need check fw->ver? */
+	text_ptr = (u32 *)((u8 *) fw_ptr + sizeof(struct ved_fw));
+	data_ptr = text_ptr + fw->text_size;
+
+	/* maybe we can judge fw version according to fw text size */
+
+	IPVR_DEBUG_VED("VED: Retrieved pointers for firmware\n");
+	IPVR_DEBUG_VED("VED: text_size: %d\n", fw->text_size);
+	IPVR_DEBUG_VED("VED: data_size: %d\n", fw->data_size);
+	IPVR_DEBUG_VED("VED: data_location: 0x%x\n", fw->data_location);
+	IPVR_DEBUG_VED("VED: First 4 bytes of text: 0x%x\n", *text_ptr);
+	IPVR_DEBUG_VED("VED: First 4 bytes of data: 0x%x\n", *data_ptr);
+	IPVR_DEBUG_VED("VED: Uploading firmware\n");
+
+	ved_upload_fw(ved_priv, 0, ved_priv->mtx_mem_size / 4);
+
+	/*	-- Set starting PC address	*/
+	ved_write_mtx_core_reg(ved_priv, MTX_PC, PC_START_ADDRESS);
+
+	/*	-- Turn on the thread	*/
+	IPVR_REG_WRITE32(MTX_ENABLE_MTX_ENABLE_MASK, MTX_ENABLE_OFFSET);
+
+	/* Wait for the signature value to be written back */
+	ret = ved_wait_for_register(ved_priv, MSVDX_COMMS_SIGNATURE,
+				    MSVDX_COMMS_SIGNATURE_VALUE,
+				    0xffffffff, /* Enabled bits */
+				    2000000, 5);
+	if (ret) {
+		IPVR_ERROR("VED: firmware fails to initialize.\n");
+		goto out;
+	}
+
+	IPVR_DEBUG_VED("VED: MTX Initial indications OK.\n");
+	IPVR_DEBUG_VED("VED: MSVDX_COMMS_AREA_ADDR = %08x.\n",
+		       MSVDX_COMMS_AREA_ADDR);
+out:
+	/* no need to put fw bo, we will do it at driver unload */
+	return ret;
+}
+
+
+/* This value is hardcoded in FW */
+#define WDT_CLOCK_DIVIDER 128
+int ved_post_boot_init(struct ved_private *ved_priv)
+{
+	u32 device_node_flags =
+			DSIABLE_IDLE_GPIO_SIG | DSIABLE_Auto_CLOCK_GATING |
+			RETURN_VDEB_DATA_IN_COMPLETION |
+			NOT_ENABLE_ON_HOST_CONCEALMENT;
+	int reg_val = 0;
+
+	/* DDK set fe_wdt_clks as 0x820 and be_wdt_clks as 0x8200 */
+	u32 fe_wdt_clks = 0x334 * WDT_CLOCK_DIVIDER;
+	u32 be_wdt_clks = 0x2008 * WDT_CLOCK_DIVIDER;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+
+	IPVR_REG_WRITE32(FIRMWAREID, MSVDX_COMMS_FIRMWARE_ID);
+	IPVR_REG_WRITE32(device_node_flags, MSVDX_COMMS_OFFSET_FLAGS);
+
+	/* read register bank size */
+	{
+		u32 ram_bank_size;
+		u32 bank_size, reg;
+		reg = IPVR_REG_READ32(MSVDX_MTX_RAM_BANK_OFFSET);
+		bank_size =
+			REGIO_READ_FIELD(reg, MSVDX_MTX_RAM_BANK,
+					 MTX_RAM_BANK_SIZE);
+		ram_bank_size = (u32)(1 << (bank_size + 2));
+		IPVR_DEBUG_INIT("VED: RAM bank size = %d bytes\n",
+				ram_bank_size);
+	}
+	/* host end */
+
+	/* DDK setup tiling region here */
+	/* DDK set MMU_CONTROL2 register */
+
+	/* set watchdog timer here */
+	REGIO_WRITE_FIELD(reg_val, FE_MSVDX_WDT_CONTROL,
+			  FE_WDT_CNT_CTRL, 0x3);
+	REGIO_WRITE_FIELD(reg_val, FE_MSVDX_WDT_CONTROL,
+			  FE_WDT_ENABLE, 0);
+	REGIO_WRITE_FIELD(reg_val, FE_MSVDX_WDT_CONTROL,
+			  FE_WDT_ACTION0, 1);
+	REGIO_WRITE_FIELD(reg_val, FE_MSVDX_WDT_CONTROL,
+			  FE_WDT_CLEAR_SELECT, 1);
+	REGIO_WRITE_FIELD(reg_val, FE_MSVDX_WDT_CONTROL,
+			  FE_WDT_CLKDIV_SELECT, 7);
+	IPVR_REG_WRITE32(fe_wdt_clks / WDT_CLOCK_DIVIDER,
+			FE_MSVDX_WDT_COMPAREMATCH_OFFSET);
+	IPVR_REG_WRITE32(reg_val, FE_MSVDX_WDT_CONTROL_OFFSET);
+
+	reg_val = 0;
+	/* DDK set BE_WDT_CNT_CTRL as 0x5 and BE_WDT_CLEAR_SELECT as 0x1 */
+	REGIO_WRITE_FIELD(reg_val, BE_MSVDX_WDT_CONTROL,
+			  BE_WDT_CNT_CTRL, 0x7);
+	REGIO_WRITE_FIELD(reg_val, BE_MSVDX_WDT_CONTROL,
+			  BE_WDT_ENABLE, 0);
+	REGIO_WRITE_FIELD(reg_val, BE_MSVDX_WDT_CONTROL,
+			  BE_WDT_ACTION0, 1);
+	REGIO_WRITE_FIELD(reg_val, BE_MSVDX_WDT_CONTROL,
+			  BE_WDT_CLEAR_SELECT, 0xd);
+	REGIO_WRITE_FIELD(reg_val, BE_MSVDX_WDT_CONTROL,
+			  BE_WDT_CLKDIV_SELECT, 7);
+
+	IPVR_REG_WRITE32(be_wdt_clks / WDT_CLOCK_DIVIDER,
+			BE_MSVDX_WDT_COMPAREMATCH_OFFSET);
+	IPVR_REG_WRITE32(reg_val, BE_MSVDX_WDT_CONTROL_OFFSET);
+
+	return ved_rendec_init_by_msg(ved_priv);
+}
+
+int ved_post_init(struct ved_private *ved_priv)
+{
+	u32 cmd;
+	int ret;
+	struct drm_ipvr_private *dev_priv;
+
+	if (!ved_priv)
+		return -EINVAL;
+
+	ved_priv->ved_busy = false;
+	dev_priv = ved_priv->dev_priv;
+
+	/* Enable MMU by removing all bypass bits */
+	IPVR_REG_WRITE32(0, MSVDX_MMU_CONTROL0_OFFSET);
+
+	ved_rendec_init_by_reg(ved_priv);
+	if (!ved_priv->fw_bo) {
+		ret = ved_alloc_fw_bo(ved_priv);
+		if (ret) {
+			IPVR_ERROR("VED: ved_alloc_fw_bo failed: %d.\n", ret);
+			return ret;
+		}
+	}
+	/* move fw loading to the place receiving first cmd buffer */
+	ved_priv->ved_fw_loaded = false; /* need to load firware */
+	/* it should be set at punit post boot init phase */
+	IPVR_REG_WRITE32(820, FE_MSVDX_WDT_COMPAREMATCH_OFFSET);
+	IPVR_REG_WRITE32(8200, BE_MSVDX_WDT_COMPAREMATCH_OFFSET);
+
+	IPVR_REG_WRITE32(820, FE_MSVDX_WDT_COMPAREMATCH_OFFSET);
+	IPVR_REG_WRITE32(8200, BE_MSVDX_WDT_COMPAREMATCH_OFFSET);
+
+	ved_clear_irq(ved_priv);
+	ved_enable_irq(ved_priv);
+
+	cmd = 0;
+	cmd = IPVR_REG_READ32(VEC_SHIFTREG_CONTROL_OFFSET);
+	REGIO_WRITE_FIELD(cmd, VEC_SHIFTREG_CONTROL,
+	  SR_MASTER_SELECT, 1);  /* Host */
+	IPVR_REG_WRITE32(cmd, VEC_SHIFTREG_CONTROL_OFFSET);
+
+	return 0;
+}
+
+int __must_check ved_core_init(struct drm_ipvr_private *dev_priv)
+{
+	int ret;
+	struct ved_private *ved_priv;
+	if (!dev_priv->ved_private) {
+		ved_priv = kzalloc(sizeof(struct ved_private), GFP_KERNEL);
+		if (!ved_priv) {
+			IPVR_ERROR("VED: alloc ved_private failed.\n");
+			return -ENOMEM;
+		}
+
+		dev_priv->ved_private = ved_priv;
+		ved_priv->dev_priv = dev_priv;
+
+		/* Initialize comand ved queueing */
+		INIT_LIST_HEAD(&ved_priv->ved_queue);
+		mutex_init(&ved_priv->ved_mutex);
+		spin_lock_init(&ved_priv->ved_lock);
+		ved_priv->mmu_recover_page = alloc_page(GFP_DMA32);
+		if (!ved_priv->mmu_recover_page) {
+			ret = -ENOMEM;
+			IPVR_ERROR("VED: alloc mmu_recover_page failed: %d.\n", ret);
+			goto err_free_ved_priv;
+		}
+		IPVR_DEBUG_INIT("VED: successfully initialized ved_private.\n");
+		dev_priv->ved_private= ved_priv;
+	}
+	ved_priv = dev_priv->ved_private;
+
+	ret = ved_alloc_ccb_for_rendec(dev_priv->ved_private,
+			RENDEC_A_SIZE, RENDEC_B_SIZE);
+	if (unlikely(ret)) {
+		IPVR_ERROR("VED: msvdx_alloc_ccb_for_rendec failed: %d.\n", ret);
+		goto err_free_mmu_recover_page;
+	}
+
+	ret = ved_post_init(ved_priv);
+	if (unlikely(ret)) {
+		IPVR_ERROR("VED: ved_post_init failed: %d.\n", ret);
+		goto err_free_ccb;
+	}
+
+	return 0;
+err_free_ccb:
+	ved_free_ccb(ved_priv);
+err_free_mmu_recover_page:
+	__free_page(ved_priv->mmu_recover_page);
+err_free_ved_priv:
+	kfree(ved_priv);
+	dev_priv->ved_private = NULL;
+	return ret;
+}
+
+int ved_core_deinit(struct drm_ipvr_private *dev_priv)
+{
+	struct ved_private *ved_priv = dev_priv->ved_private;
+	if (NULL == ved_priv) {
+		IPVR_ERROR("VED: ved_priv is NULL!\n");
+		return -1;
+	}
+
+	IPVR_DEBUG_INIT("VED: set the VED clock to 0.\n");
+	ved_set_clocks(ved_priv, 0);
+
+	if (ved_priv->ccb0 || ved_priv->ccb1)
+		ved_free_ccb(ved_priv);
+
+	if (ved_priv->fw_bo) {
+		drm_gem_object_unreference_unlocked(&ved_priv->fw_bo->base);
+		ved_priv->fw_bo = NULL;
+	}
+
+	if (ved_priv->ved_fw_ptr)
+		kfree(ved_priv->ved_fw_ptr);
+
+	if (ved_priv->mmu_recover_page)
+		__free_page(ved_priv->mmu_recover_page);
+
+	kfree(ved_priv);
+	dev_priv->ved_private = NULL;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/ipvr/ved_fw.h b/drivers/gpu/drm/ipvr/ved_fw.h
new file mode 100644
index 0000000..3ced466
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_fw.h
@@ -0,0 +1,81 @@
+/**************************************************************************
+ * ved_fw.h: VED firmware support header file
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) Imagination Technologies Limited, UK
+ * Copyright (c) 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+
+#ifndef _VED_FW_H_
+#define _VED_FW_H_
+
+#include "ipvr_drv.h"
+
+#define FIRMWAREID		0x014d42ab
+
+/*  Non-Optimal Invalidation is not default */
+#define MSVDX_DEVICE_NODE_FLAGS_MMU_NONOPT_INV	2
+
+#define FW_VA_RENDER_HOST_INT		0x00004000
+#define MSVDX_DEVICE_NODE_FLAGS_MMU_HW_INVALIDATION	0x00000020
+#define FW_DEVA_ERROR_DETECTED 0x08000000
+
+/* There is no work currently underway on the hardware */
+#define MSVDX_FW_STATUS_HW_IDLE	0x00000001
+#define MSVDX_DEVICE_NODE_FLAG_BRN23154_BLOCK_ON_FE	0x00000200
+#define MSVDX_DEVICE_NODE_FLAGS_DEFAULT_D0				\
+	(MSVDX_DEVICE_NODE_FLAGS_MMU_NONOPT_INV |			\
+		MSVDX_DEVICE_NODE_FLAGS_MMU_HW_INVALIDATION |		\
+		MSVDX_DEVICE_NODE_FLAG_BRN23154_BLOCK_ON_FE)
+
+#define MSVDX_DEVICE_NODE_FLAGS_DEFAULT_D1				\
+	(MSVDX_DEVICE_NODE_FLAGS_MMU_HW_INVALIDATION |			\
+		MSVDX_DEVICE_NODE_FLAG_BRN23154_BLOCK_ON_FE)
+
+#define MTX_CODE_BASE		(0x80900000)
+#define MTX_DATA_BASE		(0x82880000)
+#define PC_START_ADDRESS	(0x80900000)
+
+#define MTX_CORE_CODE_MEM	(0x10)
+#define MTX_CORE_DATA_MEM	(0x18)
+
+#define RENDEC_A_SIZE	(4 * 1024 * 1024)
+#define RENDEC_B_SIZE	(1024 * 1024)
+
+#define TERMINATION_SIZE	48
+
+#define MSVDX_RESET_NEEDS_REUPLOAD_FW		(0x2)
+#define MSVDX_RESET_NEEDS_INIT_FW		(0x1)
+
+/* init/deinit all ved_private related */
+int __must_check ved_core_init(struct drm_ipvr_private *dev_priv);
+int ved_core_deinit(struct drm_ipvr_private *dev_priv);
+
+/* used for resetting VED after power saving */
+int ved_setup_fw(struct ved_private *ved_priv);
+int ved_core_reset(struct ved_private *ved_priv);
+int ved_wait_for_register(struct ved_private *ved_priv,
+			u32 offset, u32 value, u32 enable,
+			u32 poll_cnt, u32 timeout);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ved_msg.h b/drivers/gpu/drm/ipvr/ved_msg.h
new file mode 100644
index 0000000..1a1e89d
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_msg.h
@@ -0,0 +1,256 @@
+/**************************************************************************
+ * ved_msg.h: VED message definition
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) 2003 Imagination Technologies Limited, UK
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Li Zeng <li.zeng at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _VED_MSG_H_
+#define _VED_MSG_H_
+
+/* Start of parser specific Host->MTX messages. */
+#define	FWRK_MSGID_START_PSR_HOSTMTX_MSG	(0x80)
+
+/* Start of parser specific MTX->Host messages. */
+#define	FWRK_MSGID_START_PSR_MTXHOST_MSG	(0xC0)
+
+/* Host defined msg, just for host use, MTX not recgnize */
+#define	FWRK_MSGID_HOST_EMULATED		(0x40)
+
+/* This type defines the framework specified message ids */
+enum {
+	/* ! Sent by the VA driver on the host to the mtx firmware.
+	 */
+	MTX_MSGID_PADDING = 0,
+	MTX_MSGID_INIT = FWRK_MSGID_START_PSR_HOSTMTX_MSG,
+	MTX_MSGID_DECODE_FE,
+	MTX_MSGID_DEBLOCK,
+	MTX_MSGID_INTRA_OOLD,
+	MTX_MSGID_DECODE_BE,
+	MTX_MSGID_HOST_BE_OPP,
+
+	/*! Sent by the mtx firmware to itself.
+	 */
+	MTX_MSGID_RENDER_MC_INTERRUPT,
+
+	/* used to ditinguish mrst and mfld */
+	MTX_MSGID_DEBLOCK_MFLD = FWRK_MSGID_HOST_EMULATED,
+	MTX_MSGID_INTRA_OOLD_MFLD,
+	MTX_MSGID_DECODE_BE_MFLD,
+	MTX_MSGID_HOST_BE_OPP_MFLD,
+
+	/*! Sent by the DXVA firmware on the MTX to the host.
+	 */
+	MTX_MSGID_COMPLETED = FWRK_MSGID_START_PSR_MTXHOST_MSG,
+	MTX_MSGID_COMPLETED_BATCH,
+	MTX_MSGID_DEBLOCK_REQUIRED,
+	MTX_MSGID_TEST_RESPONCE,
+	MTX_MSGID_ACK,
+	MTX_MSGID_FAILED,
+	MTX_MSGID_CONTIGUITY_WARNING,
+	MTX_MSGID_HW_PANIC,
+};
+
+#define MTX_GENMSG_SIZE_TYPE		u8
+#define MTX_GENMSG_SIZE_MASK		(0xFF)
+#define MTX_GENMSG_SIZE_SHIFT		(0)
+#define MTX_GENMSG_SIZE_OFFSET		(0x0000)
+
+#define MTX_GENMSG_ID_TYPE		u8
+#define MTX_GENMSG_ID_MASK		(0xFF)
+#define MTX_GENMSG_ID_SHIFT		(0)
+#define MTX_GENMSG_ID_OFFSET		(0x0001)
+
+#define MTX_GENMSG_HEADER_SIZE		2
+
+#define MTX_GENMSG_FENCE_TYPE		u16
+#define MTX_GENMSG_FENCE_MASK		(0xFFFF)
+#define MTX_GENMSG_FENCE_OFFSET		(0x0002)
+#define MTX_GENMSG_FENCE_SHIFT		(0)
+
+#define FW_INVALIDATE_MMU		(0x0010)
+
+union msg_header {
+	struct {
+		u32 msg_size:8;
+		u32 msg_type:8;
+		u32 msg_fence:16;
+	} bits;
+	u32 value;
+};
+
+struct fw_init_msg {
+	union {
+		struct {
+			u32 msg_size:8;
+			u32 msg_type:8;
+			u32 reserved:16;
+		} bits;
+		u32 value;
+	} header;
+	u32 rendec_addr0;
+	u32 rendec_addr1;
+	union {
+		struct {
+			u32 rendec_size0:16;
+			u32 rendec_size1:16;
+		} bits;
+		u32 value;
+	} rendec_size;
+};
+
+struct fw_decode_msg {
+	union {
+		struct {
+			u32 msg_size:8;
+			u32 msg_type:8;
+			u32 msg_fence:16;
+		} bits;
+		u32 value;
+	} header;
+	union {
+		struct {
+			u32 flags:16;
+			u32 buffer_size:16;
+		} bits;
+		u32 value;
+	} flag_size;
+	u32 crtl_alloc_addr;
+	union {
+		struct {
+			u32 context:8;
+			u32 mmu_ptd:24;
+		} bits;
+		u32 value;
+	} mmu_context;
+	u32 operating_mode;
+};
+
+struct fw_deblock_msg {
+	union {
+		struct {
+			u32 msg_size:8;
+			u32 msg_type:8;
+			u32 msg_fence:16;
+		} bits;
+		u32 value;
+	} header;
+	union {
+		struct {
+			u32 flags:16;
+			u32 slice_field_type:2;
+			u32 reserved:14;
+		} bits;
+		u32 value;
+	} flag_type;
+	u32 operating_mode;
+	union {
+		struct {
+			u32 context:8;
+			u32 mmu_ptd:24;
+		} bits;
+		u32 value;
+	} mmu_context;
+	union {
+		struct {
+			u32 frame_height_mb:16;
+			u32 pic_width_mb:16;
+		} bits;
+		u32 value;
+	} pic_size;
+	u32 address_a0;
+	u32 address_a1;
+	u32 mb_param_address;
+	u32 ext_stride_a;
+	u32 address_b0;
+	u32 address_b1;
+	u32 alt_output_flags_b;
+	/* additional msg outside of IMG msg */
+	u32 address_c0;
+	u32 address_c1;
+};
+
+#define MTX_PADMSG_SIZE 2
+struct fw_padding_msg {
+	union {
+		struct {
+			u32 msg_size:8;
+			u32 msg_type:8;
+		} bits;
+		u16 value;
+	} header;
+};
+
+struct fw_msg_header {
+	union {
+		struct {
+			u32 msg_size:8;
+			u32 msg_type:8;
+			u32 msg_fence:16;
+		} bits;
+		u32 value;
+	} header;
+};
+
+struct fw_completed_msg {
+	union {
+		struct {
+			u32 msg_size:8;
+			u32 msg_type:8;
+			u32 msg_fence:16;
+		} bits;
+		u32 value;
+	} header;
+	union {
+		struct {
+			u32 start_mb:16;
+			u32 last_mb:16;
+		} bits;
+		u32 value;
+	} mb;
+	u32 flags;
+	u32 vdebcr;
+};
+
+struct fw_panic_msg {
+	union {
+		struct {
+			u32 msg_size:8;
+			u32 msg_type:8;
+			u32 msg_fence:16;
+		} bits;
+		u32 value;
+	} header;
+	u32 fe_status;
+	u32 be_status;
+	union {
+		struct {
+			u32 last_mb:16;
+			u32 reserved2:16;
+		} bits;
+		u32 value;
+	} mb;
+};
+
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ved_pm.c b/drivers/gpu/drm/ipvr/ved_pm.c
new file mode 100644
index 0000000..ee11c39
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_pm.c
@@ -0,0 +1,335 @@
+/**************************************************************************
+ * ved_pm.c: VED power management support
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+
+#include "ipvr_trace.h"
+#include "ved_pm.h"
+#include "ved_reg.h"
+#include "ved_cmd.h"
+#include "ved_fw.h"
+#ifdef CONFIG_INTEL_SOC_PMC
+#include <linux/intel_mid_pm.h>
+#endif
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+
+extern int drm_ipvr_freq;
+
+#define PCI_ROOT_MSGBUS_CTRL_REG      0xD0
+#define PCI_ROOT_MSGBUS_DATA_REG      0xD4
+#define PCI_ROOT_MSGBUS_CTRL_EXT_REG  0xD8
+#define PCI_ROOT_MSGBUS_READ          0x10
+#define PCI_ROOT_MSGBUS_WRITE         0x11
+#define PCI_ROOT_MSGBUS_DWORD_ENABLE  0xf0
+
+/* VED power state set/get */
+#define PUNIT_PORT			0x04
+#define VEDSSPM0 			0x32
+#define VEDSSPM1 			0x33
+#define VEDSSC				0x1
+
+/* VED frequency set/get */
+#define IP_FREQ_VALID     0x80     /* Freq is valid bit */
+
+#define IP_FREQ_SIZE         5     /* number of bits in freq fields */
+#define IP_FREQ_MASK      0x1f     /* Bit mask for freq field */
+
+/*  Positions of various frequency fields */
+#define IP_FREQ_POS          0     /* Freq control [4:0] */
+#define IP_FREQ_GUAR_POS     8     /* Freq guar   [12:8] */
+#define IP_FREQ_STAT_POS    24     /* Freq status [28:24] */
+
+enum APM_VED_STATUS {
+	VED_APM_STS_D0 = 0,
+	VED_APM_STS_D1,
+	VED_APM_STS_D2,
+	VED_APM_STS_D3
+};
+
+#define GET_FREQ_NUMBER(freq_code)	((1600 * 2)/((freq_code) + 1))
+/* valid freq code: 0x9, 0xb, 0xd, 0xf, 0x11, 0x13 */
+#define FREQ_CODE_CLAMP(code) ((code < 0x9)? 0x9: ((code > 0x13)? 0x13: code))
+#define GET_FREQ_CODE(freq_num)	FREQ_CODE_CLAMP((((1600 * 2/freq_num + 1) >> 1) << 1) - 1)
+
+#ifdef CONFIG_INTEL_SOC_PMC
+extern int pmc_nc_set_power_state(int islands, int state_type, int reg);
+extern int pmc_nc_get_power_state(int islands, int reg);
+#endif
+
+static int ved_save_context(struct ved_private *ved_priv)
+{
+	int offset;
+	int ret;
+	struct drm_ipvr_private *dev_priv = ved_priv->dev_priv;
+
+	ved_priv->ved_needs_reset = 1;
+	/* Reset MTX */
+	IPVR_REG_WRITE32(MTX_SOFT_RESET_MTXRESET, MTX_SOFT_RESET_OFFSET);
+
+	/* why need reset msvdx before power off it, need check IMG */
+	ret = ved_core_reset(ved_priv);
+	if (unlikely(ret))
+		IPVR_DEBUG_WARN("failed to call ved_core_reset: %d\n", ret);
+
+	/* Initialize VEC Local RAM */
+	for (offset = 0; offset < VEC_LOCAL_MEM_BYTE_SIZE / 4; ++offset)
+		IPVR_REG_WRITE32(0, VEC_LOCAL_MEM_OFFSET + offset * 4);
+
+	return 0;
+}
+
+static u32 ipvr_msgbus_read32(struct pci_dev *pci_root, u8 port, u32 addr)
+{
+    u32 data;
+    u32 cmd;
+    u32 cmdext;
+
+    cmd = (PCI_ROOT_MSGBUS_READ << 24) | (port << 16) |
+        ((addr & 0xff) << 8) | PCI_ROOT_MSGBUS_DWORD_ENABLE;
+    cmdext = addr & 0xffffff00;
+
+    if (cmdext) {
+        /* This resets to 0 automatically, no need to write 0 */
+        pci_write_config_dword(pci_root, PCI_ROOT_MSGBUS_CTRL_EXT_REG,
+                    cmdext);
+    }
+
+    pci_write_config_dword(pci_root, PCI_ROOT_MSGBUS_CTRL_REG, cmd);
+    pci_read_config_dword(pci_root, PCI_ROOT_MSGBUS_DATA_REG, &data);
+
+    return data;
+}
+
+static void ipvr_msgbus_write32(struct pci_dev *pci_root, u8 port, u32 addr, u32 data)
+{
+    u32 cmd;
+    u32 cmdext;
+
+    cmd = (PCI_ROOT_MSGBUS_WRITE << 24) | (port << 16) |
+        ((addr & 0xFF) << 8) | PCI_ROOT_MSGBUS_DWORD_ENABLE;
+    cmdext = addr & 0xffffff00;
+
+    pci_write_config_dword(pci_root, PCI_ROOT_MSGBUS_DATA_REG, data);
+
+    if (cmdext) {
+        /* This resets to 0 automatically, no need to write 0 */
+        pci_write_config_dword(pci_root, PCI_ROOT_MSGBUS_CTRL_EXT_REG,
+            cmdext);
+    }
+
+    pci_write_config_dword(pci_root, PCI_ROOT_MSGBUS_CTRL_REG, cmd);
+}
+
+static int ipvr_pm_cmd_freq_wait(struct pci_dev *pci_root, u32 reg_freq, u32 *freq_code_rlzd)
+{
+	int tcount;
+	u32 freq_val;
+
+	for (tcount = 0; ; tcount++) {
+		freq_val = ipvr_msgbus_read32(pci_root, PUNIT_PORT, reg_freq);
+		if ((freq_val & IP_FREQ_VALID) == 0)
+			break;
+		if (tcount > 500) {
+			IPVR_ERROR("P-Unit freq request wait timeout %x",
+				freq_val);
+			return -EBUSY;
+		}
+		udelay(1);
+	}
+
+	if (freq_code_rlzd) {
+		*freq_code_rlzd = ((freq_val >> IP_FREQ_STAT_POS) &
+			IP_FREQ_MASK);
+	}
+
+	return 0;
+}
+
+static int ipvr_pm_cmd_freq_get(struct pci_dev *pci_root, u32 reg_freq)
+{
+	u32 freq_val;
+	int freq_code = 0;
+
+	ipvr_pm_cmd_freq_wait(pci_root, reg_freq, NULL);
+
+	freq_val = ipvr_msgbus_read32(pci_root, PUNIT_PORT, reg_freq);
+	freq_code =(int)((freq_val>>IP_FREQ_STAT_POS) & ~IP_FREQ_VALID);
+	return freq_code;
+}
+
+static int ipvr_pm_cmd_freq_set(struct pci_dev *pci_root, u32 reg_freq, u32 freq_code, u32 *p_freq_code_rlzd)
+{
+	u32 freq_val;
+	u32 freq_code_realized;
+	int rva;
+
+	rva = ipvr_pm_cmd_freq_wait(pci_root, reg_freq, NULL);
+	if (rva < 0) {
+		IPVR_ERROR("pm_cmd_freq_wait 1 failed: %d\n", rva);
+		return rva;
+	}
+
+	freq_val = IP_FREQ_VALID | freq_code;
+	ipvr_msgbus_write32(pci_root, PUNIT_PORT, reg_freq, freq_val);
+
+	rva = ipvr_pm_cmd_freq_wait(pci_root, reg_freq, &freq_code_realized);
+	if (rva < 0) {
+		IPVR_ERROR("pm_cmd_freq_wait 2 failed: %d\n", rva);
+		return rva;
+	}
+
+	if (p_freq_code_rlzd)
+		*p_freq_code_rlzd = freq_code_realized;
+
+	return rva;
+}
+
+static int ved_set_freq(struct drm_ipvr_private *dev_priv, u32 freq_code)
+{
+	u32 freq_code_rlzd = 0;
+	int ret;
+
+	ret = ipvr_pm_cmd_freq_set(dev_priv->pci_root,
+		VEDSSPM1, freq_code, &freq_code_rlzd);
+	if (ret < 0) {
+		IPVR_ERROR("failed to set freqency, current is %x\n",
+			freq_code_rlzd);
+	}
+
+	return ret;
+}
+
+static int ved_get_freq(struct drm_ipvr_private *dev_priv)
+{
+	return ipvr_pm_cmd_freq_get(dev_priv->pci_root, VEDSSPM1);
+}
+
+#ifdef CONFIG_INTEL_SOC_PMC
+static inline bool do_power_on(struct drm_ipvr_private *dev_priv)
+{
+	if (pmc_nc_set_power_state(VEDSSC, 0, VEDSSPM0)) {
+		IPVR_ERROR("VED: pmu_nc_set_power_state ON fail!\n");
+		return false;
+	}
+	return true;
+}
+static inline bool do_power_off(struct drm_ipvr_private *dev_priv)
+{
+	if (pmc_nc_set_power_state(VEDSSC, 1, VEDSSPM0)) {
+		IPVR_ERROR("VED: pmu_nc_set_power_state OFF fail!\n");
+		return false;
+	}
+	return true;
+}
+#else
+static inline bool do_power_on(struct drm_ipvr_private *dev_priv)
+{
+	u32 pwr_sts;
+	do {
+		ipvr_msgbus_write32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0, VED_APM_STS_D0);
+		udelay(10);
+		pwr_sts = ipvr_msgbus_read32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0);
+	} while (pwr_sts != 0x0);
+	do {
+		ipvr_msgbus_write32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0, VED_APM_STS_D3);
+		udelay(10);
+		pwr_sts = ipvr_msgbus_read32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0);
+	} while (pwr_sts != 0x03000003);
+	do {
+		ipvr_msgbus_write32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0, VED_APM_STS_D0);
+		udelay(10);
+		pwr_sts = ipvr_msgbus_read32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0);
+	} while (pwr_sts != 0x0);
+	return true;
+}
+static inline bool do_power_off(struct drm_ipvr_private *dev_priv)
+{
+	u32 pwr_sts;
+	do {
+		ipvr_msgbus_write32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0, VED_APM_STS_D3);
+		udelay(10);
+		pwr_sts = ipvr_msgbus_read32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0);
+	} while (pwr_sts != 0x03000003);
+	return true;
+}
+#endif
+
+bool ved_power_on(struct drm_ipvr_private *dev_priv)
+{
+	int ved_freq_code_before, ved_freq_code_requested, ved_freq_code_after;
+	IPVR_DEBUG_PM("VED: power on msvdx.\n");
+
+	if (dev_priv->ved_private)
+		dev_priv->ved_private->ved_busy = false;
+	if (!do_power_on(dev_priv))
+		return false;
+
+	ved_freq_code_before = ved_get_freq(dev_priv);
+	ved_freq_code_requested = GET_FREQ_CODE(drm_ipvr_freq);
+	if (ved_set_freq(dev_priv, ved_freq_code_requested)) {
+		IPVR_ERROR("Failed to set VED frequency\n");
+	}
+
+	ved_freq_code_after = ved_get_freq(dev_priv);
+	IPVR_DEBUG_PM("VED freqency requested %dMHz: actual %dMHz => %dMHz\n",
+		drm_ipvr_freq, GET_FREQ_NUMBER(ved_freq_code_before),
+		GET_FREQ_NUMBER(ved_freq_code_after));
+	drm_ipvr_freq = GET_FREQ_NUMBER(ved_freq_code_after);
+
+	trace_ved_power_on(drm_ipvr_freq);
+	return true;
+}
+
+bool ved_power_off(struct drm_ipvr_private *dev_priv)
+{
+	int ved_freq_code;
+	int ret;
+	IPVR_DEBUG_PM("VED: power off msvdx.\n");
+
+	if (dev_priv->ved_private) {
+		ret = ved_save_context(dev_priv->ved_private);
+		if (unlikely(ret)) {
+			IPVR_ERROR("Failed to save VED context: %d, stop powering off\n", ret);
+			return false;
+		}
+		dev_priv->ved_private->ved_busy = false;
+	}
+
+	ved_freq_code = ved_get_freq(dev_priv);
+	drm_ipvr_freq = GET_FREQ_NUMBER(ved_freq_code);
+	IPVR_DEBUG_PM("VED freqency: code %d (%dMHz)\n", ved_freq_code, drm_ipvr_freq);
+
+	if (!do_power_off(dev_priv))
+		return false;
+
+	trace_ved_power_off(drm_ipvr_freq);
+	return true;
+}
+
+bool is_ved_on(struct drm_ipvr_private *dev_priv)
+{
+	u32 pwr_sts;
+	pwr_sts = ipvr_msgbus_read32(dev_priv->pci_root, PUNIT_PORT, VEDSSPM0);
+	return (pwr_sts == VED_APM_STS_D0);
+}
diff --git a/drivers/gpu/drm/ipvr/ved_pm.h b/drivers/gpu/drm/ipvr/ved_pm.h
new file mode 100644
index 0000000..4ed1485
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_pm.h
@@ -0,0 +1,36 @@
+/**************************************************************************
+ * ved_pm.h: VED power management header file
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _VED_PM_H_
+#define _VED_PM_H_
+
+#include "ipvr_drv.h"
+
+bool is_ved_on(struct drm_ipvr_private *dev_priv);
+
+bool __must_check ved_power_on(struct drm_ipvr_private *dev_priv);
+
+bool ved_power_off(struct drm_ipvr_private *dev_priv);
+
+#endif
diff --git a/drivers/gpu/drm/ipvr/ved_reg.h b/drivers/gpu/drm/ipvr/ved_reg.h
new file mode 100644
index 0000000..b7c69cf
--- /dev/null
+++ b/drivers/gpu/drm/ipvr/ved_reg.h
@@ -0,0 +1,561 @@
+/**************************************************************************
+ * ved_reg.h: VED register definition
+ *
+ * Copyright (c) 2014 Intel Corporation, Hillsboro, OR, USA
+ * Copyright (c) Imagination Technologies Limited, UK
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors:
+ *    Fei Jiang <fei.jiang at intel.com>
+ *    Yao Cheng <yao.cheng at intel.com>
+ *
+ **************************************************************************/
+
+#ifndef _VED_REG_H_
+#define _VED_REG_H_
+
+#include "ipvr_drv.h"
+
+#define REGISTER(__group__, __reg__) (__group__##_##__reg__##_OFFSET)
+
+#define MTX_INTERNAL_REG(R_SPECIFIER , U_SPECIFIER)	\
+	(((R_SPECIFIER)<<4) | (U_SPECIFIER))
+#define MTX_PC		MTX_INTERNAL_REG(0, 5)
+
+#define MEMIO_READ_FIELD(vpMem, field)						\
+	((u32)(((*((field##_TYPE*)(((u32)vpMem) + field##_OFFSET))) \
+			& field##_MASK) >> field##_SHIFT))			\
+
+#define MEMIO_WRITE_FIELD(vpMem, field, value)					\
+do { 										\
+	((*((field##_TYPE*)(((u32)vpMem) + field##_OFFSET))) =	\
+		((*((field##_TYPE*)(((u32)vpMem) + field##_OFFSET)))	\
+			& (field##_TYPE)~field##_MASK) |			\
+	(field##_TYPE)(((u32)(value) << field##_SHIFT) & field##_MASK)); \
+} while (0)
+
+#define MEMIO_WRITE_FIELD_LITE(vpMem, field, value)				\
+do {										\
+	 (*((field##_TYPE*)(((u32)vpMem) + field##_OFFSET))) =		\
+	((*((field##_TYPE*)(((u32)vpMem) + field##_OFFSET))) |		\
+		(field##_TYPE)(((u32)(value) << field##_SHIFT)));	\
+} while (0)
+
+#define REGIO_READ_FIELD(reg_val, reg, field)					\
+	((reg_val & reg##_##field##_MASK) >> reg##_##field##_SHIFT)
+
+#define REGIO_WRITE_FIELD(reg_val, reg, field, value)				\
+do {										\
+	(reg_val) =								\
+	((reg_val) & ~(reg##_##field##_MASK)) |				\
+	(((value) << (reg##_##field##_SHIFT)) & (reg##_##field##_MASK));	\
+} while (0)
+
+
+#define REGIO_WRITE_FIELD_LITE(reg_val, reg, field, value)			\
+do {										\
+	(reg_val) = ((reg_val) | ((value) << (reg##_##field##_SHIFT)));	\
+} while (0)
+
+/****** MSVDX.Technical Reference Manual.2.0.2.4.External VXD38x **************
+Offset address 			Name 			Identifier
+0x0000 - 0x03FF (1024B)		MTX Register		REG_MSVDX_MTX
+0x0400 - 0x047F (128B)		VDMC Register		REG_MSVDX _VDMC
+0x0480 - 0x04FF (128B)		VDEB Register		REG_MSVDX _VDEB
+0x0500 - 0x05FF (256B)		DMAC Register		REG_MSVDX _DMAC
+0x0600 - 0x06FF (256B)		MSVDX Core Register	REG_MSVDX _SYS
+0x0700 - 0x07FF (256B)		VEC iQ Matrix RAM 	REG_MSVDX_VEC_IQRAM
+0x0800 - 0x0FFF (2048B)		VEC Registers		REG_MSVDX _VEC
+0x1000 - 0x1FFF (4kB)		Command Register	REG_MSVDX _CMD
+0x2000 - 0x2FFF (4kB)		VEC Local RAM		REG_MSVDX _VEC_RAM
+0x3000 - 0x4FFF (8kB)		VEC VLC Table		RAM REG_MSVDX _VEC_VLC
+0x5000 - 0x5FFF (4kB)		AXI Register		REG_MSVDX _AXI
+******************************************************************************/
+
+/*************** MTX registers start: 0x0000 - 0x03FF (1024B) ****************/
+#define MTX_ENABLE_OFFSET				(0x0000)
+#define MTX_ENABLE_MTX_ENABLE_MASK				(0x00000001)
+#define MTX_ENABLE_MTX_ENABLE_SHIFT				(0)
+
+#define MTX_KICK_INPUT_OFFSET				(0x0080)
+
+#define MTX_REGISTER_READ_WRITE_REQUEST_OFFSET		(0x00FC)
+#define MTX_REGISTER_READ_WRITE_REQUEST_MTX_DREADY_MASK	(0x80000000)
+#define MTX_REGISTER_READ_WRITE_REQUEST_MTX_DREADY_SHIFT	(31)
+#define MTX_REGISTER_READ_WRITE_REQUEST_MTX_RNW_MASK		(0x00010000)
+#define MTX_REGISTER_READ_WRITE_REQUEST_MTX_RNW_SHIFT		(16)
+
+#define MTX_REGISTER_READ_WRITE_DATA_OFFSET		(0x00F8)
+
+#define MTX_RAM_ACCESS_DATA_TRANSFER_OFFSET		(0x0104)
+
+#define MTX_RAM_ACCESS_CONTROL_OFFSET			(0x0108)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCMID_MASK			(0x0FF00000)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCMID_SHIFT			(20)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCM_ADDR_MASK		(0x000FFFFC)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCM_ADDR_SHIFT		(2)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCMAI_MASK			(0x00000002)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCMAI_SHIFT			(1)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCMR_MASK			(0x00000001)
+#define MTX_RAM_ACCESS_CONTROL_MTX_MCMR_SHIFT			(0)
+
+#define MTX_RAM_ACCESS_STATUS_OFFSET			(0x010C)
+
+#define MTX_SOFT_RESET_OFFSET				(0x0200)
+#define MTX_SOFT_RESET_MTX_RESET_MASK				(0x00000001)
+#define MTX_SOFT_RESET_MTX_RESET_SHIFT				(0)
+#define	MTX_SOFT_RESET_MTXRESET				(0x00000001)
+
+#define MTX_SYSC_TIMERDIV_OFFSET			(0x0208)
+
+#define MTX_SYSC_CDMAC_OFFSET				(0x0340)
+#define MTX_SYSC_CDMAC_BURSTSIZE_MASK				(0x07000000)
+#define MTX_SYSC_CDMAC_BURSTSIZE_SHIFT				(24)
+#define MTX_SYSC_CDMAC_RNW_MASK				(0x00020000)
+#define MTX_SYSC_CDMAC_RNW_SHIFT				(17)
+#define MTX_SYSC_CDMAC_ENABLE_MASK				(0x00010000)
+#define MTX_SYSC_CDMAC_ENABLE_SHIFT				(16)
+#define MTX_SYSC_CDMAC_LENGTH_MASK				(0x0000FFFF)
+#define MTX_SYSC_CDMAC_LENGTH_SHIFT				(0)
+
+#define MTX_SYSC_CDMAA_OFFSET				(0x0344)
+
+#define MTX_SYSC_CDMAS0_OFFSET      			(0x0348)
+
+#define MTX_SYSC_CDMAT_OFFSET				(0x0350)
+/************************** MTX registers end **************************/
+
+/**************** DMAC Registers: 0x0500 - 0x05FF (256B) ***************/
+#define DMAC_DMAC_COUNT_EN_MASK         		(0x00010000)
+#define DMAC_DMAC_IRQ_STAT_TRANSFER_FIN_MASK            (0x00020000)
+
+#define DMAC_DMAC_SETUP_OFFSET				(0x0500)
+
+#define DMAC_DMAC_COUNT_OFFSET				(0x0504)
+#define DMAC_DMAC_COUNT_BSWAP_LSBMASK           		(0x00000001)
+#define DMAC_DMAC_COUNT_BSWAP_SHIFT            		(30)
+#define DMAC_DMAC_COUNT_PW_LSBMASK				(0x00000003)
+#define DMAC_DMAC_COUNT_PW_SHIFT                		(27)
+#define DMAC_DMAC_COUNT_DIR_LSBMASK				(0x00000001)
+#define DMAC_DMAC_COUNT_DIR_SHIFT				(26)
+#define DMAC_DMAC_COUNT_PI_LSBMASK				(0x00000003)
+#define DMAC_DMAC_COUNT_PI_SHIFT				(24)
+#define DMAC_DMAC_COUNT_CNT_LSBMASK				(0x0000FFFF)
+#define DMAC_DMAC_COUNT_CNT_SHIFT				(0)
+#define DMAC_DMAC_COUNT_EN_MASK				(0x00010000)
+#define DMAC_DMAC_COUNT_EN_SHIFT				(16)
+
+#define DMAC_DMAC_PERIPH_OFFSET				(0x0508)
+#define DMAC_DMAC_PERIPH_ACC_DEL_LSBMASK			(0x00000007)
+#define DMAC_DMAC_PERIPH_ACC_DEL_SHIFT				(29)
+#define DMAC_DMAC_PERIPH_INCR_LSBMASK				(0x00000001)
+#define DMAC_DMAC_PERIPH_INCR_SHIFT				(27)
+#define DMAC_DMAC_PERIPH_BURST_LSBMASK				(0x00000007)
+#define DMAC_DMAC_PERIPH_BURST_SHIFT				(24)
+
+#define DMAC_DMAC_IRQ_STAT_OFFSET			(0x050C)
+#define DMAC_DMAC_IRQ_STAT_TRANSFER_FIN_MASK			(0x00020000)
+
+#define DMAC_DMAC_PERIPHERAL_ADDR_OFFSET		(0x0514)
+#define DMAC_DMAC_PERIPHERAL_ADDR_ADDR_MASK			(0x007FFFFF)
+#define DMAC_DMAC_PERIPHERAL_ADDR_ADDR_LSBMASK			(0x007FFFFF)
+#define DMAC_DMAC_PERIPHERAL_ADDR_ADDR_SHIFT			(0)
+
+/* DMAC control */
+#define IPVR_DMAC_VALUE_COUNT(BSWAP, PW, DIR, PERIPH_INCR, COUNT) 	\
+		((((BSWAP) & DMAC_DMAC_COUNT_BSWAP_LSBMASK) <<	\
+			DMAC_DMAC_COUNT_BSWAP_SHIFT) | 		\
+		(((PW) & DMAC_DMAC_COUNT_PW_LSBMASK) <<		\
+			DMAC_DMAC_COUNT_PW_SHIFT) | 			\
+		(((DIR) & DMAC_DMAC_COUNT_DIR_LSBMASK) <<		\
+			DMAC_DMAC_COUNT_DIR_SHIFT) |			\
+		(((PERIPH_INCR) & DMAC_DMAC_COUNT_PI_LSBMASK) <<	\
+			DMAC_DMAC_COUNT_PI_SHIFT) |			\
+		(((COUNT) & DMAC_DMAC_COUNT_CNT_LSBMASK) <<		\
+			DMAC_DMAC_COUNT_CNT_SHIFT))
+
+#define IPVR_DMAC_VALUE_PERIPH_PARAM(ACC_DEL, INCR, BURST)		\
+		((((ACC_DEL) & DMAC_DMAC_PERIPH_ACC_DEL_LSBMASK) <<	\
+			DMAC_DMAC_PERIPH_ACC_DEL_SHIFT) | 		\
+		(((INCR) & DMAC_DMAC_PERIPH_INCR_LSBMASK) <<		\
+			DMAC_DMAC_PERIPH_INCR_SHIFT) | 		\
+		(((BURST) & DMAC_DMAC_PERIPH_BURST_LSBMASK) <<		\
+			DMAC_DMAC_PERIPH_BURST_SHIFT))
+
+typedef enum {
+	/* !< No byte swapping will be performed. */
+	IPVR_DMAC_BSWAP_NO_SWAP = 0x0,
+	/* !< Byte order will be reversed. */
+	IPVR_DMAC_BSWAP_REVERSE = 0x1,
+} DMAC_eBSwap;
+
+typedef enum {
+	/* !< Data from memory to peripheral. */
+	IPVR_DMAC_DIR_MEM_TO_PERIPH = 0x0,
+	/* !< Data from peripheral to memory. */
+	IPVR_DMAC_DIR_PERIPH_TO_MEM = 0x1,
+} DMAC_eDir;
+
+typedef enum {
+	IPVR_DMAC_ACC_DEL_0	= 0x0,	/* !< Access delay zero clock cycles */
+	IPVR_DMAC_ACC_DEL_256    = 0x1,	/* !< Access delay 256 clock cycles */
+	IPVR_DMAC_ACC_DEL_512    = 0x2,	/* !< Access delay 512 clock cycles */
+	IPVR_DMAC_ACC_DEL_768    = 0x3,	/* !< Access delay 768 clock cycles */
+	IPVR_DMAC_ACC_DEL_1024   = 0x4,	/* !< Access delay 1024 clock cycles */
+	IPVR_DMAC_ACC_DEL_1280   = 0x5,	/* !< Access delay 1280 clock cycles */
+	IPVR_DMAC_ACC_DEL_1536   = 0x6,	/* !< Access delay 1536 clock cycles */
+	IPVR_DMAC_ACC_DEL_1792   = 0x7,	/* !< Access delay 1792 clock cycles */
+} DMAC_eAccDel;
+
+typedef enum {
+	IPVR_DMAC_INCR_OFF	= 0,	/* !< Static peripheral address. */
+	IPVR_DMAC_INCR_ON	= 1,	/* !< Incrementing peripheral address. */
+} DMAC_eIncr;
+
+typedef enum {
+	IPVR_DMAC_BURST_0	= 0x0,	/* !< burst size of 0 */
+	IPVR_DMAC_BURST_1        = 0x1,	/* !< burst size of 1 */
+	IPVR_DMAC_BURST_2        = 0x2,	/* !< burst size of 2 */
+	IPVR_DMAC_BURST_3        = 0x3,	/* !< burst size of 3 */
+	IPVR_DMAC_BURST_4        = 0x4,	/* !< burst size of 4 */
+	IPVR_DMAC_BURST_5        = 0x5,	/* !< burst size of 5 */
+	IPVR_DMAC_BURST_6        = 0x6,	/* !< burst size of 6 */
+	IPVR_DMAC_BURST_7        = 0x7,	/* !< burst size of 7 */
+} DMAC_eBurst;
+/************************** DMAC Registers end **************************/
+
+/**************** MSVDX Core Registers: 0x0600 - 0x06FF (256B) ***************/
+#define MSVDX_CONTROL_OFFSET					(0x0600)
+#define MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK			(0x00000100)
+#define MSVDX_CONTROL_MSVDX_SOFT_RESET_SHIFT			(8)
+#define MSVDX_CONTROL_DMAC_CH0_SELECT_MASK			(0x00001000)
+#define MSVDX_CONTROL_DMAC_CH0_SELECT_SHIFT			(12)
+#define MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK			(0x00000100)
+#define MSVDX_CONTROL_MSVDX_SOFT_RESET_SHIFT			(8)
+#define MSVDX_CONTROL_MSVDX_FE_SOFT_RESET_MASK			(0x00010000)
+#define MSVDX_CONTROL_MSVDX_BE_SOFT_RESET_MASK			(0x00100000)
+#define MSVDX_CONTROL_MSVDX_VEC_MEMIF_SOFT_RESET_MASK		(0x01000000)
+#define MSVDX_CONTROL_MSVDX_VEC_RENDEC_DEC_SOFT_RESET_MASK 	(0x10000000)
+#define msvdx_sw_reset_all \
+	(MSVDX_CONTROL_MSVDX_SOFT_RESET_MASK |	  		\
+	MSVDX_CONTROL_MSVDX_FE_SOFT_RESET_MASK |		\
+	MSVDX_CONTROL_MSVDX_BE_SOFT_RESET_MASK	|		\
+	MSVDX_CONTROL_MSVDX_VEC_MEMIF_SOFT_RESET_MASK |	\
+	MSVDX_CONTROL_MSVDX_VEC_RENDEC_DEC_SOFT_RESET_MASK)
+
+#define MSVDX_INTERRUPT_CLEAR_OFFSET			(0x060C)
+
+#define MSVDX_INTERRUPT_STATUS_OFFSET			(0x0608)
+#define MSVDX_INTERRUPT_STATUS_MMU_FAULT_IRQ_MASK		(0x00000F00)
+#define MSVDX_INTERRUPT_STATUS_MMU_FAULT_IRQ_SHIFT		(8)
+#define MSVDX_INTERRUPT_STATUS_MTX_IRQ_MASK			(0x00004000)
+#define MSVDX_INTERRUPT_STATUS_MTX_IRQ_SHIFT			(14)
+
+#define MSVDX_HOST_INTERRUPT_ENABLE_OFFSET		(0x0610)
+
+#define MSVDX_MAN_CLK_ENABLE_OFFSET			(0x0620)
+#define MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK		(0x00000001)
+#define MSVDX_MAN_CLK_ENABLE_VDEB_PROCESS_MAN_CLK_ENABLE_MASK 	(0x00000002)
+#define MSVDX_MAN_CLK_ENABLE_VDEB_ACCESS_MAN_CLK_ENABLE_MASK 	(0x00000004)
+#define MSVDX_MAN_CLK_ENABLE_VDMC_MAN_CLK_ENABLE_MASK 		(0x00000008)
+#define MSVDX_MAN_CLK_ENABLE_VEC_ENTDEC_MAN_CLK_ENABLE_MASK 	(0x00000010)
+#define MSVDX_MAN_CLK_ENABLE_VEC_ITRANS_MAN_CLK_ENABLE_MASK 	(0x00000020)
+#define MSVDX_MAN_CLK_ENABLE_MTX_MAN_CLK_ENABLE_MASK		(0x00000040)
+#define MSVDX_MAN_CLK_ENABLE_VDEB_PROCESS_AUTO_CLK_ENABLE_MASK (0x00020000)
+#define MSVDX_MAN_CLK_ENABLE_VDEB_ACCESS_AUTO_CLK_ENABLE_MASK	(0x00040000)
+#define MSVDX_MAN_CLK_ENABLE_VDMC_AUTO_CLK_ENABLE_MASK 	(0x00080000)
+#define MSVDX_MAN_CLK_ENABLE_VEC_ENTDEC_AUTO_CLK_ENABLE_MASK 	(0x00100000)
+#define MSVDX_MAN_CLK_ENABLE_VEC_ITRANS_AUTO_CLK_ENABLE_MASK 	(0x00200000)
+
+#define clk_enable_all	\
+	(MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK			| \
+	MSVDX_MAN_CLK_ENABLE_VDEB_PROCESS_MAN_CLK_ENABLE_MASK 		| \
+	MSVDX_MAN_CLK_ENABLE_VDEB_ACCESS_MAN_CLK_ENABLE_MASK 		| \
+	MSVDX_MAN_CLK_ENABLE_VDMC_MAN_CLK_ENABLE_MASK	 		| \
+	MSVDX_MAN_CLK_ENABLE_VEC_ENTDEC_MAN_CLK_ENABLE_MASK 		| \
+	MSVDX_MAN_CLK_ENABLE_VEC_ITRANS_MAN_CLK_ENABLE_MASK 		| \
+	MSVDX_MAN_CLK_ENABLE_MTX_MAN_CLK_ENABLE_MASK)
+
+#define clk_enable_minimal \
+	(MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK | \
+	MSVDX_MAN_CLK_ENABLE_MTX_MAN_CLK_ENABLE_MASK)
+
+#define clk_enable_auto	\
+	(MSVDX_MAN_CLK_ENABLE_VDEB_PROCESS_AUTO_CLK_ENABLE_MASK	| \
+	MSVDX_MAN_CLK_ENABLE_VDEB_ACCESS_AUTO_CLK_ENABLE_MASK		| \
+	MSVDX_MAN_CLK_ENABLE_VDMC_AUTO_CLK_ENABLE_MASK			| \
+	MSVDX_MAN_CLK_ENABLE_VEC_ENTDEC_AUTO_CLK_ENABLE_MASK		| \
+	MSVDX_MAN_CLK_ENABLE_VEC_ITRANS_AUTO_CLK_ENABLE_MASK		| \
+	MSVDX_MAN_CLK_ENABLE_CORE_MAN_CLK_ENABLE_MASK			| \
+	MSVDX_MAN_CLK_ENABLE_MTX_MAN_CLK_ENABLE_MASK)
+
+#define MSVDX_CORE_ID_OFFSET				(0x0630)
+#define MSVDX_CORE_REV_OFFSET				(0x0640)
+
+#define MSVDX_DMAC_STREAM_STATUS_OFFSET			(0x0648)
+
+#define MSVDX_MMU_CONTROL0_OFFSET			(0x0680)
+#define MSVDX_MMU_CONTROL0_MMU_PAUSE_MASK			(0x00000002)
+#define MSVDX_MMU_CONTROL0_MMU_PAUSE_SHIFT			(1)
+#define MSVDX_MMU_CONTROL0_MMU_INVALDC_MASK          		(0x00000008)
+#define MSVDX_MMU_CONTROL0_MMU_INVALDC_SHIFT         		(3)
+
+#define MSVDX_MMU_BANK_INDEX_OFFSET			(0x0688)
+
+#define MSVDX_MMU_STATUS_OFFSET				(0x068C)
+
+#define MSVDX_MMU_CONTROL2_OFFSET			(0x0690)
+
+#define MSVDX_MMU_DIR_LIST_BASE_OFFSET			(0x0694)
+
+#define MSVDX_MMU_MEM_REQ_OFFSET			(0x06D0)
+
+#define MSVDX_MMU_TILE_BASE0_OFFSET			(0x06D4)
+
+#define MSVDX_MMU_TILE_BASE1_OFFSET			(0x06D8)
+
+#define MSVDX_MTX_RAM_BANK_OFFSET			(0x06F0)
+#define MSVDX_MTX_RAM_BANK_MTX_RAM_BANK_SIZE_MASK		(0x000F0000)
+#define MSVDX_MTX_RAM_BANK_MTX_RAM_BANK_SIZE_SHIFT		(16)
+
+#define MSVDX_MTX_DEBUG_OFFSET				MSVDX_MTX_RAM_BANK_OFFSET
+#define MSVDX_MTX_DEBUG_MTX_DBG_IS_SLAVE_MASK			(0x00000004)
+#define MSVDX_MTX_DEBUG_MTX_DBG_IS_SLAVE_LSBMASK		(0x00000001)
+#define MSVDX_MTX_DEBUG_MTX_DBG_IS_SLAVE_SHIFT			(2)
+#define MSVDX_MTX_DEBUG_MTX_DBG_GPIO_IN_MASK			(0x00000003)
+#define MSVDX_MTX_DEBUG_MTX_DBG_GPIO_IN_LSBMASK		(0x00000003)
+#define MSVDX_MTX_DEBUG_MTX_DBG_GPIO_IN_SHIFT			(0)
+
+/*watch dog for FE and BE*/
+#define FE_MSVDX_WDT_CONTROL_OFFSET			(0x0664)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_CONTROL, FE_WDT_CNT_CTRL */
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CNT_CTRL_MASK		(0x00060000)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CNT_CTRL_LSBMASK		(0x00000003)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CNT_CTRL_SHIFT		(17)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_CONTROL, FE_WDT_ENABLE */
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ENABLE_MASK		(0x00010000)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ENABLE_LSBMASK		(0x00000001)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ENABLE_SHIFT		(16)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_CONTROL, FE_WDT_ACTION1 */
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ACTION1_MASK		(0x00003000)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ACTION1_LSBMASK		(0x00000003)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ACTION1_SHIFT		(12)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_CONTROL, FE_WDT_ACTION0 */
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ACTION0_MASK		(0x00000100)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ACTION0_LSBMASK		(0x00000001)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_ACTION0_SHIFT		(8)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_CONTROL, FE_WDT_CLEAR_SELECT */
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CLEAR_SELECT_MASK		(0x00000030)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CLEAR_SELECT_LSBMASK	(0x00000003)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CLEAR_SELECT_SHIFT		(4)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_CONTROL, FE_WDT_CLKDIV_SELECT */
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CLKDIV_SELECT_MASK		(0x00000007)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CLKDIV_SELECT_LSBMASK	(0x00000007)
+#define FE_MSVDX_WDT_CONTROL_FE_WDT_CLKDIV_SELECT_SHIFT	(0)
+
+#define FE_MSVDX_WDTIMER_OFFSET				(0x0668)
+/* MSVDX_CORE, CR_FE_MSVDX_WDTIMER, FE_WDT_COUNTER */
+#define FE_MSVDX_WDTIMER_FE_WDT_COUNTER_MASK			(0x0000FFFF)
+#define FE_MSVDX_WDTIMER_FE_WDT_COUNTER_LSBMASK		(0x0000FFFF)
+#define FE_MSVDX_WDTIMER_FE_WDT_COUNTER_SHIFT			(0)
+
+#define FE_MSVDX_WDT_COMPAREMATCH_OFFSET		(0x066c)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_COMPAREMATCH, FE_WDT_CM1 */
+#define FE_MSVDX_WDT_COMPAREMATCH_FE_WDT_CM1_MASK		(0xFFFF0000)
+#define FE_MSVDX_WDT_COMPAREMATCH_FE_WDT_CM1_LSBMASK		(0x0000FFFF)
+#define FE_MSVDX_WDT_COMPAREMATCH_FE_WDT_CM1_SHIFT		(16)
+/* MSVDX_CORE, CR_FE_MSVDX_WDT_COMPAREMATCH, FE_WDT_CM0 */
+#define FE_MSVDX_WDT_COMPAREMATCH_FE_WDT_CM0_MASK		(0x0000FFFF)
+#define FE_MSVDX_WDT_COMPAREMATCH_FE_WDT_CM0_LSBMASK		(0x0000FFFF)
+#define FE_MSVDX_WDT_COMPAREMATCH_FE_WDT_CM0_SHIFT		(0)
+
+#define BE_MSVDX_WDT_CONTROL_OFFSET			(0x0670)
+/* MSVDX_CORE, CR_BE_MSVDX_WDT_CONTROL, BE_WDT_CNT_CTRL */
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CNT_CTRL_MASK		(0x001E0000)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CNT_CTRL_LSBMASK		(0x0000000F)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CNT_CTRL_SHIFT		(17)
+/* MSVDX_CORE, CR_BE_MSVDX_WDT_CONTROL, BE_WDT_ENABLE */
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_ENABLE_MASK		(0x00010000)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_ENABLE_LSBMASK		(0x00000001)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_ENABLE_SHIFT		(16)
+/* MSVDX_CORE, CR_BE_MSVDX_WDT_CONTROL, BE_WDT_ACTION0 */
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_ACTION0_MASK		(0x00000100)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_ACTION0_LSBMASK		(0x00000001)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_ACTION0_SHIFT		(8)
+/* MSVDX_CORE, CR_BE_MSVDX_WDT_CONTROL, BE_WDT_CLEAR_SELECT */
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CLEAR_SELECT_MASK		(0x000000F0)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CLEAR_SELECT_LSBMASK	(0x0000000F)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CLEAR_SELECT_SHIFT		(4)
+/* MSVDX_CORE, CR_BE_MSVDX_WDT_CONTROL, BE_WDT_CLKDIV_SELECT */
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CLKDIV_SELECT_MASK		(0x00000007)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CLKDIV_SELECT_LSBMASK	(0x00000007)
+#define BE_MSVDX_WDT_CONTROL_BE_WDT_CLKDIV_SELECT_SHIFT	(0)
+
+#define BE_MSVDX_WDTIMER_OFFSET				(0x0674)
+/* MSVDX_CORE, CR_BE_MSVDX_WDTIMER, BE_WDT_COUNTER */
+#define BE_MSVDX_WDTIMER_BE_WDT_COUNTER_MASK			(0x0000FFFF)
+#define BE_MSVDX_WDTIMER_BE_WDT_COUNTER_LSBMASK		(0x0000FFFF)
+#define BE_MSVDX_WDTIMER_BE_WDT_COUNTER_SHIFT			(0)
+
+#define BE_MSVDX_WDT_COMPAREMATCH_OFFSET		(0x678)
+/* MSVDX_CORE, CR_BE_MSVDX_WDT_COMPAREMATCH, BE_WDT_CM0 */
+#define BE_MSVDX_WDT_COMPAREMATCH_BE_WDT_CM0_MASK		(0x0000FFFF)
+#define BE_MSVDX_WDT_COMPAREMATCH_BE_WDT_CM0_LSBMASK		(0x0000FFFF)
+#define BE_MSVDX_WDT_COMPAREMATCH_BE_WDT_CM0_SHIFT		(0)
+
+/*watch dog end*/
+/************************** MSVDX Core Registers end *************************/
+
+/******************* VEC Registers: 0x0800 - 0x0FFF (2048B) ******************/
+#define VEC_SHIFTREG_CONTROL_OFFSET			(0x0818)
+#define VEC_SHIFTREG_CONTROL_SR_MASTER_SELECT_MASK		(0x00000300)
+#define VEC_SHIFTREG_CONTROL_SR_MASTER_SELECT_SHIFT		(8)
+/************************** VEC Registers end **************************/
+
+/************************** RENDEC Registers **************************/
+#define MSVDX_RENDEC_CONTROL0_OFFSET			(0x0868)
+#define MSVDX_RENDEC_CONTROL0_RENDEC_INITIALISE_MASK		(0x00000001)
+#define MSVDX_RENDEC_CONTROL0_RENDEC_INITIALISE_SHIFT		(0)
+
+#define MSVDX_RENDEC_CONTROL1_OFFSET			(0x086C)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_DECODE_START_SIZE_MASK	(0x000000FF)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_DECODE_START_SIZE_SHIFT	(0)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_BURST_SIZE_W_MASK		(0x000C0000)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_BURST_SIZE_W_SHIFT		(18)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_BURST_SIZE_R_MASK		(0x00030000)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_BURST_SIZE_R_SHIFT		(16)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_EXTERNAL_MEMORY_MASK	(0x01000000)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_EXTERNAL_MEMORY_SHIFT	(24)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_DEC_DISABLE_MASK		(0x08000000)
+#define MSVDX_RENDEC_CONTROL1_RENDEC_DEC_DISABLE_SHIFT		(27)
+
+#define MSVDX_RENDEC_BUFFER_SIZE_OFFSET			(0x0870)
+#define MSVDX_RENDEC_BUFFER_SIZE_RENDEC_BUFFER_SIZE0_MASK	(0x0000FFFF)
+#define MSVDX_RENDEC_BUFFER_SIZE_RENDEC_BUFFER_SIZE0_SHIFT	(0)
+#define MSVDX_RENDEC_BUFFER_SIZE_RENDEC_BUFFER_SIZE1_MASK	(0xFFFF0000)
+#define MSVDX_RENDEC_BUFFER_SIZE_RENDEC_BUFFER_SIZE1_SHIFT	(16)
+
+#define MSVDX_RENDEC_BASE_ADDR0_OFFSET			(0x0874)
+
+#define MSVDX_RENDEC_BASE_ADDR1_OFFSET			(0x0878)
+
+#define MSVDX_RENDEC_READ_DATA_OFFSET			(0x0898)
+
+#define MSVDX_RENDEC_CONTEXT0_OFFSET			(0x0950)
+
+#define MSVDX_RENDEC_CONTEXT1_OFFSET			(0x0954)
+
+#define MSVDX_RENDEC_CONTEXT2_OFFSET			(0x0958)
+
+#define MSVDX_RENDEC_CONTEXT3_OFFSET			(0x095C)
+
+#define MSVDX_RENDEC_CONTEXT4_OFFSET			(0x0960)
+
+#define MSVDX_RENDEC_CONTEXT5_OFFSET			(0x0964)
+/*************************** RENDEC registers end ****************************/
+
+/******************** CMD Register: 0x1000 - 0x1FFF (4kB) ********************/
+#define MSVDX_CMDS_END_SLICE_PICTURE_OFFSET		(0x1404)
+/****************************** CMD Register end *****************************/
+
+/******************** VEC Local RAM: 0x2000 - 0x2FFF (4kB) *******************/
+/* vec local MEM save/restore */
+#define VEC_LOCAL_MEM_BYTE_SIZE (4 * 1024)
+#define VEC_LOCAL_MEM_OFFSET 0x2000
+
+#define MSVDX_EXT_FW_ERROR_STATE 		(0x2CC4)
+/* Decode operations in progress or not complete */
+#define MSVDX_FW_STATUS_IN_PROGRESS			0x00000000
+/* there's no work underway on the hardware, idle, can be powered down */
+#define MSVDX_FW_STATUS_HW_IDLE				0x00000001
+/* Panic, waiting to be reloaded */
+#define MSVDX_FW_STATUS_HW_PANIC			0x00000003
+
+/*
+ * This defines the MSVDX communication buffer
+ */
+#define MSVDX_COMMS_SIGNATURE_VALUE	(0xA5A5A5A5)	/*!< Signature value */
+/*!< Host buffer size (in 32-bit words) */
+#define NUM_WORDS_HOST_BUF		(100)
+/*!< MTX buffer size (in 32-bit words) */
+#define NUM_WORDS_MTX_BUF		(100)
+
+#define MSVDX_COMMS_AREA_ADDR			(0x02fe0)
+#define MSVDX_COMMS_CORE_WTD			(MSVDX_COMMS_AREA_ADDR - 0x08)
+#define MSVDX_COMMS_ERROR_TRIG			(MSVDX_COMMS_AREA_ADDR - 0x08)
+#define MSVDX_COMMS_FIRMWARE_ID			(MSVDX_COMMS_AREA_ADDR - 0x0C)
+#define MSVDX_COMMS_OFFSET_FLAGS		(MSVDX_COMMS_AREA_ADDR + 0x18)
+#define	MSVDX_COMMS_MSG_COUNTER			(MSVDX_COMMS_AREA_ADDR - 0x04)
+#define MSVDX_COMMS_FW_STATUS			(MSVDX_COMMS_AREA_ADDR - 0x10)
+#define	MSVDX_COMMS_SIGNATURE			(MSVDX_COMMS_AREA_ADDR + 0x00)
+#define	MSVDX_COMMS_TO_HOST_BUF_SIZE		(MSVDX_COMMS_AREA_ADDR + 0x04)
+#define MSVDX_COMMS_TO_HOST_RD_INDEX		(MSVDX_COMMS_AREA_ADDR + 0x08)
+#define MSVDX_COMMS_TO_HOST_WRT_INDEX		(MSVDX_COMMS_AREA_ADDR + 0x0C)
+#define MSVDX_COMMS_TO_MTX_BUF_SIZE		(MSVDX_COMMS_AREA_ADDR + 0x10)
+#define MSVDX_COMMS_TO_MTX_RD_INDEX		(MSVDX_COMMS_AREA_ADDR + 0x14)
+#define MSVDX_COMMS_TO_MTX_CB_RD_INDEX		(MSVDX_COMMS_AREA_ADDR + 0x18)
+#define MSVDX_COMMS_TO_MTX_WRT_INDEX		(MSVDX_COMMS_AREA_ADDR + 0x1C)
+#define MSVDX_COMMS_TO_HOST_BUF			(MSVDX_COMMS_AREA_ADDR + 0x20)
+#define MSVDX_COMMS_TO_MTX_BUF	\
+			(MSVDX_COMMS_TO_HOST_BUF + (NUM_WORDS_HOST_BUF << 2))
+
+/*
+ * FW FLAGs: it shall be written by the host prior to starting the Firmware.
+ */
+/* Disable Firmware based Watch dog timers. */
+#define DSIABLE_FW_WDT				0x0008
+	/* Abort Immediately on errors */
+#define ABORT_ON_ERRORS_IMMEDIATE		0x0010
+	/* Aborts faulted slices as soon as possible. Allows non faulted slices
+	 * to reach backend but faulted slice will not be allowed to start. */
+#define ABORT_FAULTED_SLICE_IMMEDIATE		0x0020
+	/* Flush faulted slices - Debug option */
+#define FLUSH_FAULTED_SLICES			0x0080
+	/* Don't interrupt host when to host buffer becomes full.
+	 * Stall until space is freed up by host on it's own. */
+#define NOT_INTERRUPT_WHEN_HOST_IS_FULL		0x0200
+	/* Contiguity warning msg will be send to host for stream with
+         * FW_ERROR_DETECTION_AND_RECOVERY flag set if non-contiguous
+	 * macroblocks are detected. */
+#define NOT_ENABLE_ON_HOST_CONCEALMENT		0x0400
+	/* Return VDEB Signature Value in Completion message.
+	 * This requires a VDEB data flush every slice for constant results.*/
+#define RETURN_VDEB_DATA_IN_COMPLETION		0x0800
+	/* Disable Auto Clock Gating. */
+#define DSIABLE_Auto_CLOCK_GATING		0x1000
+	/* Disable Idle GPIO signal. */
+#define DSIABLE_IDLE_GPIO_SIG			0x2000
+	/* Enable Setup, FE and BE Time stamps in completion message.
+	 * Used by IMG only for firmware profiling. */
+#define ENABLE_TIMESTAMPS_IN_COMPLETE_MSG	0x4000
+	/* Disable off-host 2nd pass Deblocking in Firmware.  */
+#define DSIABLE_OFFHOST_SECOND_DEBLOCK		0x20000
+	/* Sum address signature to data signature
+	 * when returning VDEB signature values. */
+#define SUM_ADD_SIG_TO_DATA_SIGNATURE		0x80000
+
+/*
+#define MSVDX_COMMS_AREA_END	\
+  (MSVDX_COMMS_TO_MTX_BUF + (NUM_WORDS_HOST_BUF << 2))
+*/
+#define MSVDX_COMMS_AREA_END 0x03000
+
+#if (MSVDX_COMMS_AREA_END != 0x03000)
+#error
+#endif
+/***************************** VEC Local RAM end *****************************/
+
+#endif
-- 
2.1.0



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