1 // SPDX-License-Identifier: MIT
2 /*
3  * Copyright © 2014-2019 Intel Corporation
4  */
5 
6 #include "gt/intel_gt.h"
7 #include "intel_huc_fw.h"
8 #include "i915_drv.h"
9 
10 /**
11  * intel_huc_fw_init_early() - initializes HuC firmware struct
12  * @huc: intel_huc struct
13  *
14  * On platforms with HuC selects firmware for uploading
15  */
16 void intel_huc_fw_init_early(struct intel_huc *huc)
17 {
18 	struct intel_gt *gt = huc_to_gt(huc);
19 	struct intel_uc *uc = &gt->uc;
20 	struct drm_i915_private *i915 = gt->i915;
21 
22 	intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC,
23 			       intel_uc_uses_guc(uc),
24 			       INTEL_INFO(i915)->platform, INTEL_REVID(i915));
25 }
26 
27 /**
28  * intel_huc_fw_upload() - load HuC uCode to device
29  * @huc: intel_huc structure
30  *
31  * Called from intel_uc_init_hw() during driver load, resume from sleep and
32  * after a GPU reset. Note that HuC must be loaded before GuC.
33  *
34  * The firmware image should have already been fetched into memory, so only
35  * check that fetch succeeded, and then transfer the image to the h/w.
36  *
37  * Return:	non-zero code on error
38  */
39 int intel_huc_fw_upload(struct intel_huc *huc)
40 {
41 	/* HW doesn't look at destination address for HuC, so set it to 0 */
42 	return intel_uc_fw_upload(&huc->fw, huc_to_gt(huc), 0, HUC_UKERNEL);
43 }
44