08872cb13a
The full authentication via the GSC requires an heci packet submission
to the GSC FW via the GSC CS. The GSC has new PXP command for this
(literally called NEW_HUC_AUTH).
The intel_huc_auth function is also updated to handle both authentication
types.
v2: check that the GuC auth for clear media has completed before
proceding with the full auth
v3: use a define for the object size (Alan)
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230531235415.1467475-6-daniele.ceraolospurio@intel.com
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/* 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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struct i915_vma;
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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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enum intel_huc_authentication_type {
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INTEL_HUC_AUTH_BY_GUC = 0,
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INTEL_HUC_AUTH_BY_GSC,
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INTEL_HUC_AUTH_MAX_MODES
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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[INTEL_HUC_AUTH_MAX_MODES];
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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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/* for load via GSCCS */
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struct i915_vma *heci_pkt;
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bool loaded_via_gsc;
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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, enum intel_huc_authentication_type type);
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int intel_huc_wait_for_auth_complete(struct intel_huc *huc,
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enum intel_huc_authentication_type type);
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bool intel_huc_is_authenticated(struct intel_huc *huc,
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enum intel_huc_authentication_type type);
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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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void intel_huc_register_gsc_notifier(struct intel_huc *huc, const struct bus_type *bus);
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void intel_huc_unregister_gsc_notifier(struct intel_huc *huc, const 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->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, INTEL_HUC_AUTH_BY_GSC);
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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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