From: Matt Roper <[email protected]> By default the hardware reports context switch status into the global hardware status page. The Xe driver doesn't use this information for anything, and as of Xe3p, leaving this setting enabled will prevent other hardware optimizations from being enabled. Disable this reporting as suggested by the tuning guide.
Bspec: 72161 Signed-off-by: Matt Roper <[email protected]> Signed-off-by: Gustavo Sousa <[email protected]> --- drivers/gpu/drm/xe/xe_tuning.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_tuning.c b/drivers/gpu/drm/xe/xe_tuning.c index 5766fa7742d3..a97872b3214b 100644 --- a/drivers/gpu/drm/xe/xe_tuning.c +++ b/drivers/gpu/drm/xe/xe_tuning.c @@ -10,6 +10,7 @@ #include <drm/drm_managed.h> #include <drm/drm_print.h> +#include "regs/xe_engine_regs.h" #include "regs/xe_gt_regs.h" #include "xe_gt_types.h" #include "xe_platform_types.h" @@ -107,6 +108,12 @@ static const struct xe_rtp_entry_sr engine_tunings[] = { FUNC(xe_rtp_match_first_render_or_compute)), XE_RTP_ACTIONS(SET(RT_CTRL, DIS_NULL_QUERY)) }, + { XE_RTP_NAME("Tuning: disable HW reporting of ctx switch to GHWSP"), + XE_RTP_RULES(GRAPHICS_VERSION_RANGE(3500, XE_RTP_END_VERSION_UNDEFINED)), + XE_RTP_ACTIONS(SET(CSFE_CHICKEN1(0), + GHWSP_CSB_REPORT_DIS, + XE_RTP_ACTION_FLAG(ENGINE_BASE))) + }, }; static const struct xe_rtp_entry_sr lrc_tunings[] = { -- 2.52.0
