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 "i915_sw_fence.h" 11 #include "intel_uc_fw.h" 12 #include "intel_huc_fw.h" 13 14 #include <linux/notifier.h> 15 #include <linux/hrtimer.h> 16 17 struct bus_type; 18 struct i915_vma; 19 20 enum intel_huc_delayed_load_status { 21 INTEL_HUC_WAITING_ON_GSC = 0, 22 INTEL_HUC_WAITING_ON_PXP, 23 INTEL_HUC_DELAYED_LOAD_ERROR, 24 }; 25 26 enum intel_huc_authentication_type { 27 INTEL_HUC_AUTH_BY_GUC = 0, 28 INTEL_HUC_AUTH_BY_GSC, 29 INTEL_HUC_AUTH_MAX_MODES 30 }; 31 32 struct intel_huc { 33 /* Generic uC firmware management */ 34 struct intel_uc_fw fw; 35 36 /* HuC-specific additions */ 37 struct { 38 i915_reg_t reg; 39 u32 mask; 40 u32 value; 41 } status[INTEL_HUC_AUTH_MAX_MODES]; 42 43 struct { 44 struct i915_sw_fence fence; 45 struct hrtimer timer; 46 struct notifier_block nb; 47 enum intel_huc_delayed_load_status status; 48 } delayed_load; 49 50 /* for load via GSCCS */ 51 struct i915_vma *heci_pkt; 52 53 bool loaded_via_gsc; 54 }; 55 56 int intel_huc_sanitize(struct intel_huc *huc); 57 void intel_huc_init_early(struct intel_huc *huc); 58 int intel_huc_init(struct intel_huc *huc); 59 void intel_huc_fini(struct intel_huc *huc); 60 int intel_huc_auth(struct intel_huc *huc, enum intel_huc_authentication_type type); 61 int intel_huc_wait_for_auth_complete(struct intel_huc *huc, 62 enum intel_huc_authentication_type type); 63 bool intel_huc_is_authenticated(struct intel_huc *huc, 64 enum intel_huc_authentication_type type); 65 int intel_huc_check_status(struct intel_huc *huc); 66 void intel_huc_update_auth_status(struct intel_huc *huc); 67 68 void intel_huc_register_gsc_notifier(struct intel_huc *huc, const struct bus_type *bus); 69 void intel_huc_unregister_gsc_notifier(struct intel_huc *huc, const struct bus_type *bus); 70 71 static inline bool intel_huc_is_supported(struct intel_huc *huc) 72 { 73 return intel_uc_fw_is_supported(&huc->fw); 74 } 75 76 static inline bool intel_huc_is_wanted(struct intel_huc *huc) 77 { 78 return intel_uc_fw_is_enabled(&huc->fw); 79 } 80 81 static inline bool intel_huc_is_used(struct intel_huc *huc) 82 { 83 GEM_BUG_ON(__intel_uc_fw_status(&huc->fw) == INTEL_UC_FIRMWARE_SELECTED); 84 return intel_uc_fw_is_available(&huc->fw); 85 } 86 87 static inline bool intel_huc_is_loaded_by_gsc(const struct intel_huc *huc) 88 { 89 return huc->loaded_via_gsc; 90 } 91 92 static inline bool intel_huc_wait_required(struct intel_huc *huc) 93 { 94 return intel_huc_is_used(huc) && intel_huc_is_loaded_by_gsc(huc) && 95 !intel_huc_is_authenticated(huc, INTEL_HUC_AUTH_BY_GSC); 96 } 97 98 void intel_huc_load_status(struct intel_huc *huc, struct drm_printer *p); 99 100 #endif 101