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drm/xe/xe3p_lpg: Disable reporting of context switch status to GHWSP

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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 <matthew.d.roper@intel.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://patch.msgid.link/20260206-nvl-p-upstreaming-v3-7-636e1ad32688@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
This commit is contained in:
Matt Roper 2026-02-06 15:36:03 -03:00 committed by Gustavo Sousa
parent 4a0836a260
commit e5db97a305
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/xe/xe_tuning.c
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@ -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[] = {