88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
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/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2014-2019 Intel Corporation
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*/
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#ifndef _INTEL_HUC_H_
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#define _INTEL_HUC_H_
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#include "i915_reg_defs.h"
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#include "i915_sw_fence.h"
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#include "intel_uc_fw.h"
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#include "intel_huc_fw.h"
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#include <linux/notifier.h>
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#include <linux/hrtimer.h>
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struct bus_type;
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enum intel_huc_delayed_load_status {
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INTEL_HUC_WAITING_ON_GSC = 0,
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INTEL_HUC_WAITING_ON_PXP,
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INTEL_HUC_DELAYED_LOAD_ERROR,
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};
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struct intel_huc {
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/* Generic uC firmware management */
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struct intel_uc_fw fw;
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/* HuC-specific additions */
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struct {
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i915_reg_t reg;
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u32 mask;
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u32 value;
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} status;
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struct {
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struct i915_sw_fence fence;
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struct hrtimer timer;
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struct notifier_block nb;
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enum intel_huc_delayed_load_status status;
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} delayed_load;
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};
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int intel_huc_sanitize(struct intel_huc *huc);
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void intel_huc_init_early(struct intel_huc *huc);
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int intel_huc_init(struct intel_huc *huc);
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void intel_huc_fini(struct intel_huc *huc);
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void intel_huc_suspend(struct intel_huc *huc);
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int intel_huc_auth(struct intel_huc *huc);
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int intel_huc_wait_for_auth_complete(struct intel_huc *huc);
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int intel_huc_check_status(struct intel_huc *huc);
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void intel_huc_update_auth_status(struct intel_huc *huc);
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bool intel_huc_is_authenticated(struct intel_huc *huc);
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void intel_huc_register_gsc_notifier(struct intel_huc *huc, struct bus_type *bus);
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void intel_huc_unregister_gsc_notifier(struct intel_huc *huc, struct bus_type *bus);
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static inline bool intel_huc_is_supported(struct intel_huc *huc)
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{
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return intel_uc_fw_is_supported(&huc->fw);
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}
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static inline bool intel_huc_is_wanted(struct intel_huc *huc)
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{
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return intel_uc_fw_is_enabled(&huc->fw);
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}
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static inline bool intel_huc_is_used(struct intel_huc *huc)
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{
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GEM_BUG_ON(__intel_uc_fw_status(&huc->fw) == INTEL_UC_FIRMWARE_SELECTED);
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return intel_uc_fw_is_available(&huc->fw);
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}
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static inline bool intel_huc_is_loaded_by_gsc(const struct intel_huc *huc)
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{
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return huc->fw.loaded_via_gsc;
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}
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static inline bool intel_huc_wait_required(struct intel_huc *huc)
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{
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return intel_huc_is_used(huc) && intel_huc_is_loaded_by_gsc(huc) &&
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!intel_huc_is_authenticated(huc);
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}
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void intel_huc_load_status(struct intel_huc *huc, struct drm_printer *p);
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#endif
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