86 lines · c
1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2022 Intel Corporation4 */5 6#ifndef _INTEL_GSC_UC_H_7#define _INTEL_GSC_UC_H_8 9#include "intel_uc_fw.h"10 11struct drm_printer;12struct i915_vma;13struct intel_context;14struct i915_gsc_proxy_component;15 16struct intel_gsc_uc {17 /* Generic uC firmware management */18 struct intel_uc_fw fw;19 20 /* GSC-specific additions */21 22 /*23 * The GSC has 3 version numbers:24 * - Release version (incremented with each build)25 * - Security version (incremented on security fix)26 * - Compatibility version (incremented on interface change)27 *28 * The one we care about to use the binary is the last one, so that's29 * the one we save inside the intel_uc_fw structure. The other two30 * versions are only used for debug/info purposes, so we save them here.31 *32 * Note that the release and security versions are available in the33 * binary header, while the compatibility version must be queried after34 * loading the binary.35 */36 struct intel_uc_fw_ver release;37 u32 security_version;38 39 struct i915_vma *local; /* private memory for GSC usage */40 void __iomem *local_vaddr; /* pointer to access the private memory */41 struct intel_context *ce; /* for submission to GSC FW via GSC engine */42 43 /* for delayed load and proxy handling */44 struct workqueue_struct *wq;45 struct work_struct work;46 u32 gsc_work_actions; /* protected by gt->irq_lock */47#define GSC_ACTION_FW_LOAD BIT(0)48#define GSC_ACTION_SW_PROXY BIT(1)49 50 struct {51 struct i915_gsc_proxy_component *component;52 bool component_added;53 struct i915_vma *vma;54 void *to_gsc;55 void *to_csme;56 struct mutex mutex; /* protects the tee channel binding */57 } proxy;58};59 60void intel_gsc_uc_init_early(struct intel_gsc_uc *gsc);61int intel_gsc_uc_init(struct intel_gsc_uc *gsc);62void intel_gsc_uc_fini(struct intel_gsc_uc *gsc);63void intel_gsc_uc_suspend(struct intel_gsc_uc *gsc);64void intel_gsc_uc_resume(struct intel_gsc_uc *gsc);65void intel_gsc_uc_flush_work(struct intel_gsc_uc *gsc);66void intel_gsc_uc_load_start(struct intel_gsc_uc *gsc);67void intel_gsc_uc_load_status(struct intel_gsc_uc *gsc, struct drm_printer *p);68 69static inline bool intel_gsc_uc_is_supported(struct intel_gsc_uc *gsc)70{71 return intel_uc_fw_is_supported(&gsc->fw);72}73 74static inline bool intel_gsc_uc_is_wanted(struct intel_gsc_uc *gsc)75{76 return intel_uc_fw_is_enabled(&gsc->fw);77}78 79static inline bool intel_gsc_uc_is_used(struct intel_gsc_uc *gsc)80{81 GEM_BUG_ON(__intel_uc_fw_status(&gsc->fw) == INTEL_UC_FIRMWARE_SELECTED);82 return intel_uc_fw_is_available(&gsc->fw);83}84 85#endif86