3 files changed, 38 insertions, 0 deletions

diff --git a/drivers/gpu/drm/xe/xe_configfs.c b/drivers/gpu/drm/xe/xe_configfs.c
index cb9f175c89a1..8320d57ef5a8 100644
--- a/drivers/gpu/drm/xe/xe_configfs.c
+++ b/drivers/gpu/drm/xe/xe_configfs.c
@@ -226,6 +226,21 @@ void xe_configfs_clear_survivability_mode(struct pci_dev *pdev)
 	config_item_put(&dev->group.cg_item);
 }
 
+/**
+ * xe_configfs_get_engines_allowed - get engine allowed mask from configfs
+ * @pdev: pci device
+ *
+ * Find the configfs group that belongs to the pci device and return
+ * the mask of engines allowed to be used.
+ *
+ * Return: engine mask with allowed engines
+ */
+u64 xe_configfs_get_engines_allowed(struct pci_dev *pdev)
+{
+	/* dummy implementation */
+	return U64_MAX;
+}
+
 int __init xe_configfs_init(void)
 {
 	struct config_group *root = &xe_configfs.su_group;
diff --git a/drivers/gpu/drm/xe/xe_configfs.h b/drivers/gpu/drm/xe/xe_configfs.h
index ef6d231b3024..fb8764008089 100644
--- a/drivers/gpu/drm/xe/xe_configfs.h
+++ b/drivers/gpu/drm/xe/xe_configfs.h
@@ -5,6 +5,7 @@
 #ifndef _XE_CONFIGFS_H_
 #define _XE_CONFIGFS_H_
 
+#include <linux/limits.h>
 #include <linux/types.h>
 
 struct pci_dev;
@@ -14,11 +15,13 @@ int xe_configfs_init(void);
 void xe_configfs_exit(void);
 bool xe_configfs_get_survivability_mode(struct pci_dev *pdev);
 void xe_configfs_clear_survivability_mode(struct pci_dev *pdev);
+u64 xe_configfs_get_engines_allowed(struct pci_dev *pdev);
 #else
 static inline int xe_configfs_init(void) { return 0; }
 static inline void xe_configfs_exit(void) { }
 static inline bool xe_configfs_get_survivability_mode(struct pci_dev *pdev) { return false; }
 static inline void xe_configfs_clear_survivability_mode(struct pci_dev *pdev) { }
+static inline u64 xe_configfs_get_engines_allowed(struct pci_dev *pdev) { return U64_MAX; }
 #endif
 
 #endif
diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index 33681169b857..3439c8522d01 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -17,6 +17,7 @@
 #include "regs/xe_irq_regs.h"
 #include "xe_assert.h"
 #include "xe_bo.h"
+#include "xe_configfs.h"
 #include "xe_device.h"
 #include "xe_execlist.h"
 #include "xe_force_wake.h"
@@ -805,6 +806,24 @@ static void check_gsc_availability(struct xe_gt *gt)
 	}
 }
 
+static void check_sw_disable(struct xe_gt *gt)
+{
+	struct xe_device *xe = gt_to_xe(gt);
+	u64 sw_allowed = xe_configfs_get_engines_allowed(to_pci_dev(xe->drm.dev));
+	enum xe_hw_engine_id id;
+
+	for (id = 0; id < XE_NUM_HW_ENGINES; ++id) {
+		if (!(gt->info.engine_mask & BIT(id)))
+			continue;
+
+		if (!(sw_allowed & BIT(id))) {
+			gt->info.engine_mask &= ~BIT(id);
+			xe_gt_info(gt, "%s disabled via configfs\n",
+				   engine_infos[id].name);
+		}
+	}
+}
+
 int xe_hw_engines_init_early(struct xe_gt *gt)
 {
 	int i;
@@ -813,6 +832,7 @@ int xe_hw_engines_init_early(struct xe_gt *gt)
 	read_copy_fuses(gt);
 	read_compute_fuses(gt);
 	check_gsc_availability(gt);
+	check_sw_disable(gt);
 
 	BUILD_BUG_ON(XE_HW_ENGINE_PREEMPT_TIMEOUT < XE_HW_ENGINE_PREEMPT_TIMEOUT_MIN);
 	BUILD_BUG_ON(XE_HW_ENGINE_PREEMPT_TIMEOUT > XE_HW_ENGINE_PREEMPT_TIMEOUT_MAX);