From 915757a6cbf1d77877374627a284cafe9c0de7cd Mon Sep 17 00:00:00 2001 From: Michal Wajdeczko Date: Fri, 19 May 2023 11:19:02 +0200 Subject: [PATCH] drm/xe: Change GuC interrupt data Both GUC_HOST_INTERRUPT and MED_GUC_HOST_INTERRUPT can pass additional payload data to the GuC but this capability is not used by the firmware yet. Stop using value mandated by legacy GuC interrupt register and use default notify value (zero) instead. Bspec: 49813, 63363 Signed-off-by: Michal Wajdeczko Reviewed-by: Matt Roper Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/xe/xe_guc.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c index 92d732690252..71f18b32d09b 100644 --- a/drivers/gpu/drm/xe/xe_guc.c +++ b/drivers/gpu/drm/xe/xe_guc.c @@ -598,8 +598,14 @@ int xe_guc_suspend(struct xe_guc *guc) void xe_guc_notify(struct xe_guc *guc) { struct xe_gt *gt = guc_to_gt(guc); + const u32 default_notify_data = 0; - xe_mmio_write32(gt, guc->notify_reg, GUC_SEND_TRIGGER); + /* + * Both GUC_HOST_INTERRUPT and MED_GUC_HOST_INTERRUPT can pass + * additional payload data to the GuC but this capability is not + * used by the firmware yet. Use default value in the meantime. + */ + xe_mmio_write32(gt, guc->notify_reg, default_notify_data); } int xe_guc_auth_huc(struct xe_guc *guc, u32 rsa_addr)