1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt.h b/drivers/gpu/drm/xe/xe_gt.h
new file mode 100644
index 000000000000..9d710049da45
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gt.h
@@ -0,0 +1,146 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef _XE_GT_H_
+#define _XE_GT_H_
+
+#include <linux/fault-inject.h>
+
+#include <drm/drm_util.h>
+
+#include "xe_device.h"
+#include "xe_device_types.h"
+#include "xe_gt_sriov_vf.h"
+#include "xe_hw_engine.h"
+
+#define for_each_hw_engine(hwe__, gt__, id__) \
+	for ((id__) = 0; (id__) < ARRAY_SIZE((gt__)->hw_engines); (id__)++) \
+		for_each_if(((hwe__) = (gt__)->hw_engines + (id__)) && \
+			  xe_hw_engine_is_valid((hwe__)))
+
+#define CCS_MASK(gt) (((gt)->info.engine_mask & XE_HW_ENGINE_CCS_MASK) >> XE_HW_ENGINE_CCS0)
+
+#define GT_VER(gt) ({ \
+	typeof(gt) gt_ = (gt); \
+	struct xe_device *xe = gt_to_xe(gt_); \
+	xe_gt_is_media_type(gt_) ? MEDIA_VER(xe) : GRAPHICS_VER(xe); \
+})
+
+extern struct fault_attr gt_reset_failure;
+static inline bool xe_fault_inject_gt_reset(void)
+{
+	return IS_ENABLED(CONFIG_DEBUG_FS) && should_fail(&gt_reset_failure, 1);
+}
+
+struct xe_gt *xe_gt_alloc(struct xe_tile *tile);
+int xe_gt_init_early(struct xe_gt *gt);
+int xe_gt_init(struct xe_gt *gt);
+void xe_gt_mmio_init(struct xe_gt *gt);
+void xe_gt_declare_wedged(struct xe_gt *gt);
+int xe_gt_record_default_lrcs(struct xe_gt *gt);
+
+/**
+ * xe_gt_record_user_engines - save data related to engines available to
+ * userspace
+ * @gt: GT structure
+ *
+ * Walk the available HW engines from gt->info.engine_mask and calculate data
+ * related to those engines that may be used by userspace. To be used whenever
+ * available engines change in runtime (e.g. with ccs_mode) or during
+ * initialization
+ */
+void xe_gt_record_user_engines(struct xe_gt *gt);
+
+void xe_gt_suspend_prepare(struct xe_gt *gt);
+int xe_gt_suspend(struct xe_gt *gt);
+void xe_gt_shutdown(struct xe_gt *gt);
+int xe_gt_resume(struct xe_gt *gt);
+void xe_gt_reset_async(struct xe_gt *gt);
+void xe_gt_sanitize(struct xe_gt *gt);
+int xe_gt_sanitize_freq(struct xe_gt *gt);
+
+/**
+ * xe_gt_wait_for_reset - wait for gt's async reset to finalize.
+ * @gt: GT structure
+ * Return:
+ * %true if it waited for the work to finish execution,
+ * %false if there was no scheduled reset or it was done.
+ */
+static inline bool xe_gt_wait_for_reset(struct xe_gt *gt)
+{
+	return flush_work(&gt->reset.worker);
+}
+
+/**
+ * xe_gt_reset - perform synchronous reset
+ * @gt: GT structure
+ * Return:
+ * %true if it waited for the reset to finish,
+ * %false if there was no scheduled reset.
+ */
+static inline bool xe_gt_reset(struct xe_gt *gt)
+{
+	xe_gt_reset_async(gt);
+	return xe_gt_wait_for_reset(gt);
+}
+
+/**
+ * xe_gt_any_hw_engine_by_reset_domain - scan the list of engines and return the
+ * first that matches the same reset domain as @class
+ * @gt: GT structure
+ * @class: hw engine class to lookup
+ */
+struct xe_hw_engine *
+xe_gt_any_hw_engine_by_reset_domain(struct xe_gt *gt, enum xe_engine_class class);
+
+/**
+ * xe_gt_any_hw_engine - scan the list of engines and return the
+ * first available
+ * @gt: GT structure
+ */
+struct xe_hw_engine *xe_gt_any_hw_engine(struct xe_gt *gt);
+
+struct xe_hw_engine *xe_gt_hw_engine(struct xe_gt *gt,
+				     enum xe_engine_class class,
+				     u16 instance,
+				     bool logical);
+
+static inline bool xe_gt_has_indirect_ring_state(struct xe_gt *gt)
+{
+	return gt->info.has_indirect_ring_state &&
+	       xe_device_uc_enabled(gt_to_xe(gt));
+}
+
+static inline bool xe_gt_is_main_type(struct xe_gt *gt)
+{
+	return gt->info.type == XE_GT_TYPE_MAIN;
+}
+
+static inline bool xe_gt_is_media_type(struct xe_gt *gt)
+{
+	return gt->info.type == XE_GT_TYPE_MEDIA;
+}
+
+static inline bool xe_gt_is_usm_hwe(struct xe_gt *gt, struct xe_hw_engine *hwe)
+{
+	struct xe_device *xe = gt_to_xe(gt);
+
+	return xe->info.has_usm && hwe->class == XE_ENGINE_CLASS_COPY &&
+		hwe->instance == gt->usm.reserved_bcs_instance;
+}
+
+/**
+ * xe_gt_recovery_pending() - GT recovery pending
+ * @gt: the &xe_gt
+ *
+ * Return: True if GT recovery in pending, False otherwise
+ */
+static inline bool xe_gt_recovery_pending(struct xe_gt *gt)
+{
+	return IS_SRIOV_VF(gt_to_xe(gt)) &&
+		xe_gt_sriov_vf_recovery_pending(gt);
+}
+
+#endif