drm/i915/perf: Use GTT when saving/restoring engine GPR

commit aee62e02c48bd62b9b07f5e297ecfc9aaa964937 upstream.

MI_STORE_REGISTER_MEM and MI_LOAD_REGISTER_MEM need to know which
translation to use when saving restoring the engine general purpose
registers to and from the GT scratch. Since GT scratch is mapped to
ggtt, we need to set an additional bit in the command to use GTT.

Fixes: daed3e44396d17 ("drm/i915/perf: implement active wait for noa configurations")
Suggested-by: Prathap Kumar Valsan <prathap.kumar.valsan@intel.com>
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200709224504.11345-1-chris@chris-wilson.co.uk
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit e43ff99c8deda85234e6233e0f4af6cb09566a37)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index cf2c01f17da837235dd8f79e1614cf896e814299..803983d9a05ddd1babee6890f1ac672feed67051 100644 (file)
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -1645,6 +1645,7 @@ static u32 *save_restore_register(struct i915_perf_stream *stream, u32 *cs,
        u32 d;
 
        cmd = save ? MI_STORE_REGISTER_MEM : MI_LOAD_REGISTER_MEM;
+       cmd |= MI_SRM_LRM_GLOBAL_GTT;
        if (INTEL_GEN(stream->perf->i915) >= 8)
                cmd++;