1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
new file mode 100644
index 000000000000..74602487ed67
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2014-2019 Intel Corporation
+ */
+
+#include "gt/intel_gt.h"
+#include "intel_huc_fw.h"
+#include "i915_drv.h"
+
+/**
+ * DOC: HuC Firmware
+ *
+ * Motivation:
+ * GEN9 introduces a new dedicated firmware for usage in media HEVC (High
+ * Efficiency Video Coding) operations. Userspace can use the firmware
+ * capabilities by adding HuC specific commands to batch buffers.
+ *
+ * Implementation:
+ * The same firmware loader is used as the GuC. However, the actual
+ * loading to HW is deferred until GEM initialization is done.
+ *
+ * Note that HuC firmware loading must be done before GuC loading.
+ */
+
+/**
+ * intel_huc_fw_init_early() - initializes HuC firmware struct
+ * @huc: intel_huc struct
+ *
+ * On platforms with HuC selects firmware for uploading
+ */
+void intel_huc_fw_init_early(struct intel_huc *huc)
+{
+	struct intel_gt *gt = huc_to_gt(huc);
+	struct intel_uc *uc = &gt->uc;
+	struct drm_i915_private *i915 = gt->i915;
+
+	intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC,
+			       intel_uc_uses_guc(uc),
+			       INTEL_INFO(i915)->platform, INTEL_REVID(i915));
+}
+
+/**
+ * intel_huc_fw_upload() - load HuC uCode to device
+ * @huc: intel_huc structure
+ *
+ * Called from intel_uc_init_hw() during driver load, resume from sleep and
+ * after a GPU reset. Note that HuC must be loaded before GuC.
+ *
+ * The firmware image should have already been fetched into memory, so only
+ * check that fetch succeeded, and then transfer the image to the h/w.
+ *
+ * Return:	non-zero code on error
+ */
+int intel_huc_fw_upload(struct intel_huc *huc)
+{
+	/* HW doesn't look at destination address for HuC, so set it to 0 */
+	return intel_uc_fw_upload(&huc->fw, huc_to_gt(huc), 0, HUC_UKERNEL);
+}