1 /* SPDX-License-Identifier: MIT */
2 /*
3  * Copyright © 2014-2019 Intel Corporation
4  */
5 
6 #ifndef _INTEL_HUC_H_
7 #define _INTEL_HUC_H_
8 
9 #include "i915_reg_defs.h"
10 #include "intel_uc_fw.h"
11 #include "intel_huc_fw.h"
12 
13 struct intel_huc {
14 	/* Generic uC firmware management */
15 	struct intel_uc_fw fw;
16 
17 	/* HuC-specific additions */
18 	struct {
19 		i915_reg_t reg;
20 		u32 mask;
21 		u32 value;
22 	} status;
23 };
24 
25 void intel_huc_init_early(struct intel_huc *huc);
26 int intel_huc_init(struct intel_huc *huc);
27 void intel_huc_fini(struct intel_huc *huc);
28 int intel_huc_auth(struct intel_huc *huc);
29 int intel_huc_check_status(struct intel_huc *huc);
30 void intel_huc_update_auth_status(struct intel_huc *huc);
31 
intel_huc_sanitize(struct intel_huc * huc)32 static inline int intel_huc_sanitize(struct intel_huc *huc)
33 {
34 	intel_uc_fw_sanitize(&huc->fw);
35 	return 0;
36 }
37 
intel_huc_is_supported(struct intel_huc * huc)38 static inline bool intel_huc_is_supported(struct intel_huc *huc)
39 {
40 	return intel_uc_fw_is_supported(&huc->fw);
41 }
42 
intel_huc_is_wanted(struct intel_huc * huc)43 static inline bool intel_huc_is_wanted(struct intel_huc *huc)
44 {
45 	return intel_uc_fw_is_enabled(&huc->fw);
46 }
47 
intel_huc_is_used(struct intel_huc * huc)48 static inline bool intel_huc_is_used(struct intel_huc *huc)
49 {
50 	GEM_BUG_ON(__intel_uc_fw_status(&huc->fw) == INTEL_UC_FIRMWARE_SELECTED);
51 	return intel_uc_fw_is_available(&huc->fw);
52 }
53 
intel_huc_is_loaded_by_gsc(const struct intel_huc * huc)54 static inline bool intel_huc_is_loaded_by_gsc(const struct intel_huc *huc)
55 {
56 	return huc->fw.loaded_via_gsc;
57 }
58 
59 void intel_huc_load_status(struct intel_huc *huc, struct drm_printer *p);
60 
61 #endif
62