Commit e67a35bc authored by Harish Chegondi's avatar Harish Chegondi Committed by Ashutosh Dixit
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drm/xe/eustall: Add workaround 22016596838 which applies to PVC. 



Add PVC workaround 22016596838 that disables EU DOP gating
during EU stall sampling.

Signed-off-by: default avatarHarish Chegondi <harish.chegondi@intel.com>
Reviewed-by: default avatarAshutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: default avatarAshutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/062a12ed9e110fea420cd47cb70fb10136ee9132.1740533885.git.harish.chegondi@intel.com
parent cd5bbb25

drivers/gpu/drm/xe/xe_eu_stall.c

+10 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/types.h>



#include <drm/drm_drv.h>

#include <generated/xe_wa_oob.h>

#include <uapi/drm/xe_drm.h>



#include "xe_bo.h"
@@ -22,6 +23,7 @@ 
#include "xe_observation.h"

#include "xe_pm.h"

#include "xe_trace.h"

#include "xe_wa.h"



#include "regs/xe_eu_stall_regs.h"

#include "regs/xe_gt_regs.h"
@@ -642,6 +644,10 @@ static int xe_eu_stall_stream_enable(struct xe_eu_stall_data_stream *stream) 
		return -ETIMEDOUT;

	}



	if (XE_WA(gt, 22016596838))

		xe_gt_mcr_multicast_write(gt, ROW_CHICKEN2,

					  _MASKED_BIT_ENABLE(DISABLE_DOP_GATING));



	for_each_dss_steering(xecore, gt, group, instance) {

		write_ptr_reg = xe_gt_mcr_unicast_read(gt, XEHPC_EUSTALL_REPORT, group, instance);

		/* Clear any drop bits set and not cleared in the previous session. */
@@ -793,6 +799,10 @@ static int xe_eu_stall_disable_locked(struct xe_eu_stall_data_stream *stream) 


	cancel_delayed_work_sync(&stream->buf_poll_work);



	if (XE_WA(gt, 22016596838))

		xe_gt_mcr_multicast_write(gt, ROW_CHICKEN2,

					  _MASKED_BIT_DISABLE(DISABLE_DOP_GATING));



	xe_force_wake_put(gt_to_fw(gt), XE_FW_RENDER);

	xe_pm_runtime_put(gt_to_xe(gt));

drivers/gpu/drm/xe/xe_wa_oob.rules

+1 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
22011391025	PLATFORM(DG2)

22012727170	SUBPLATFORM(DG2, G11)

22012727685	SUBPLATFORM(DG2, G11)

22016596838	PLATFORM(PVC)

18020744125	PLATFORM(PVC)

1509372804	PLATFORM(PVC), GRAPHICS_STEP(A0, C0)

1409600907	GRAPHICS_VERSION_RANGE(1200, 1250)