drm/i915/bdw: HW context support

BDW context sizes varies a bit.

v2: Squash in fixup for the hw context size from Ben.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index cc619c138777..72a3df32292f 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -117,6 +117,9 @@ static int get_context_size(struct drm_device *dev)
                 else
                         ret = GEN7_CXT_TOTAL_SIZE(reg) * 64;
                 break;
+        case 8:
+                ret = GEN8_CXT_TOTAL_SIZE;
+                break;
         default:
                 BUG();
         }
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 0c5cb3cea9c6..f897a7092ce0 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1822,6 +1822,9 @@
  * on HSW) - so the final size is 66944 bytes, which rounds to 17 pages.
  */
 #define HSW_CXT_TOTAL_SIZE              (17 * PAGE_SIZE)
+/* Same as Haswell, but 72064 bytes now. */
+#define GEN8_CXT_TOTAL_SIZE             (18 * PAGE_SIZE)
+
 
 #define VLV_CLK_CTL2                    0x101104
 #define   CLK_CTL2_CZCOUNT_30NS_SHIFT   28