From: Colin Xu <colin.xu@intel.com>
Date: Mon, 11 Jun 2018 15:39:38 +0800
Subject: drm/i915/gvt: Enable dma_buf support for BXT.
Git-commit: 84eb04f6d77a824b33da11a08118ed2766038f13
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Handle dma_buf on BXT as SKL and KBL.

Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/i915/gvt/dmabuf.c     |    4 +++-
 drivers/gpu/drm/i915/gvt/fb_decoder.c |   12 +++++++++---
 2 files changed, 12 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/i915/gvt/dmabuf.c
+++ b/drivers/gpu/drm/i915/gvt/dmabuf.c
@@ -164,7 +164,9 @@ static struct drm_i915_gem_object *vgpu_
 
 	obj->read_domains = I915_GEM_DOMAIN_GTT;
 	obj->write_domain = 0;
-	if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
+	if (IS_SKYLAKE(dev_priv)
+		|| IS_KABYLAKE(dev_priv)
+		|| IS_BROXTON(dev_priv)) {
 		unsigned int tiling_mode = 0;
 		unsigned int stride = 0;
 
--- a/drivers/gpu/drm/i915/gvt/fb_decoder.c
+++ b/drivers/gpu/drm/i915/gvt/fb_decoder.c
@@ -151,7 +151,9 @@ static u32 intel_vgpu_get_stride(struct
 	u32 stride_reg = vgpu_vreg_t(vgpu, DSPSTRIDE(pipe)) & stride_mask;
 	u32 stride = stride_reg;
 
-	if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
+	if (IS_SKYLAKE(dev_priv)
+		|| IS_KABYLAKE(dev_priv)
+		|| IS_BROXTON(dev_priv)) {
 		switch (tiled) {
 		case PLANE_CTL_TILED_LINEAR:
 			stride = stride_reg * 64;
@@ -215,7 +217,9 @@ int intel_vgpu_decode_primary_plane(stru
 	if (!plane->enabled)
 		return -ENODEV;
 
-	if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
+	if (IS_SKYLAKE(dev_priv)
+		|| IS_KABYLAKE(dev_priv)
+		|| IS_BROXTON(dev_priv)) {
 		plane->tiled = (val & PLANE_CTL_TILED_MASK) >>
 		_PLANE_CTL_TILED_SHIFT;
 		fmt = skl_format_to_drm(
@@ -257,7 +261,9 @@ int intel_vgpu_decode_primary_plane(stru
 	}
 
 	plane->stride = intel_vgpu_get_stride(vgpu, pipe, (plane->tiled << 10),
-		(IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) ?
+		(IS_SKYLAKE(dev_priv)
+		|| IS_KABYLAKE(dev_priv)
+		|| IS_BROXTON(dev_priv)) ?
 			(_PRI_PLANE_STRIDE_MASK >> 6) :
 				_PRI_PLANE_STRIDE_MASK, plane->bpp);