[PATCH] drm/xe: Mark reserved engines in snapshot

[Lucas De Marchi <lucas.demarchi@intel.com>]

When printing <debufs>/gt*/hw_engines, it's useful to mark
what engines are reserved so it doesn't mislead developers
while debugging.

Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 drivers/gpu/drm/xe/xe_hw_engine.c       | 3 +++
 drivers/gpu/drm/xe/xe_hw_engine_types.h | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index c9c3beb3ce8d..ce180faf2592 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -903,6 +903,7 @@ xe_hw_engine_snapshot_capture(struct xe_hw_engine *hwe)
 	snapshot->forcewake.ref = xe_force_wake_ref(gt_to_fw(hwe->gt),
 						    hwe->domain);
 	snapshot->mmio_base = hwe->mmio_base;
+	snapshot->kernel_reserved = xe_hw_engine_is_reserved(hwe);
 
 	/* no more VF accessible data below this point */
 	if (IS_SRIOV_VF(gt_to_xe(hwe->gt)))
@@ -1025,6 +1026,8 @@ void xe_hw_engine_snapshot_print(struct xe_hw_engine_snapshot *snapshot,
 		   snapshot->logical_instance);
 	drm_printf(p, "\tForcewake: domain 0x%x, ref %d\n",
 		   snapshot->forcewake.domain, snapshot->forcewake.ref);
+	drm_printf(p, "\tReserved: %s\n",
+		   str_yes_no(snapshot->kernel_reserved));
 	drm_printf(p, "\tHWSTAM: 0x%08x\n", snapshot->reg.ring_hwstam);
 	drm_printf(p, "\tRING_HWS_PGA: 0x%08x\n", snapshot->reg.ring_hws_pga);
 	drm_printf(p, "\tRING_EXECLIST_STATUS: 0x%016llx\n",
diff --git a/drivers/gpu/drm/xe/xe_hw_engine_types.h b/drivers/gpu/drm/xe/xe_hw_engine_types.h
index 8be6d420ece4..be60edb3e673 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine_types.h
+++ b/drivers/gpu/drm/xe/xe_hw_engine_types.h
@@ -173,6 +173,8 @@ struct xe_hw_engine_snapshot {
 	} forcewake;
 	/** @mmio_base: MMIO base address of this hw engine*/
 	u32 mmio_base;
+	/** @kernel_reserved: Engine reserved, can't be used by userspace */
+	bool kernel_reserved;
 	/** @reg: Useful MMIO register snapshot */
 	struct {
 		/** @reg.ring_execlist_status: RING_EXECLIST_STATUS */
-- 
2.43.0