drm/i915/cnl: Allow the reg_read ioctl to read the RCS TIMESTAMP register

This enables the Mesa driver to advertise support for ARB_timer_query, and
thus an OpenGL version higher than 3.2.

Suggested-by: Ben Widawsky <ben@bwidawsk.net>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Nanley Chery <nanley.g.chery@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170905184507.30046-1-nanley.g.chery@intel.com

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 1d7b879..0529af7 100644 (file)
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1251,7 +1251,7 @@ static const struct register_whitelist {
 } whitelist[] = {
        { .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
          .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
-         .size = 8, .gen_bitmask = GEN_RANGE(4, 9) },
+         .size = 8, .gen_bitmask = GEN_RANGE(4, 10) },
 };
 
 int i915_reg_read_ioctl(struct drm_device *dev,