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drm/xe/eustall: Add workaround 22016596838 which applies to PVC.

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

Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/062a12ed9e110fea420cd47cb70fb10136ee9132.1740533885.git.harish.chegondi@intel.com
This commit is contained in:
Harish Chegondi 2025-02-25 17:47:12 -08:00 committed by Ashutosh Dixit
parent cd5bbb2532
commit e67a35bc95
2 changed files with 11 additions and 0 deletions
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10
drivers/gpu/drm/xe/xe_eu_stall.c
View File

@ -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));

1
drivers/gpu/drm/xe/xe_wa_oob.rules
View File

@ -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)