/* SPDX-License-Identifier: MIT */ /* * Copyright © 2014-2019 Intel Corporation */ #ifndef _INTEL_UC_H_ #define _INTEL_UC_H_ #include "intel_gsc_uc.h" #include "intel_guc.h" #include "intel_guc_rc.h" #include "intel_guc_submission.h" #include "intel_guc_slpc.h" #include "intel_huc.h" #include "i915_params.h" struct intel_uc; struct intel_uc_ops { … }; struct intel_uc { … }; void intel_uc_init_early(struct intel_uc *uc); void intel_uc_init_late(struct intel_uc *uc); void intel_uc_driver_late_release(struct intel_uc *uc); void intel_uc_driver_remove(struct intel_uc *uc); void intel_uc_init_mmio(struct intel_uc *uc); void intel_uc_reset_prepare(struct intel_uc *uc); void intel_uc_reset(struct intel_uc *uc, intel_engine_mask_t stalled); void intel_uc_reset_finish(struct intel_uc *uc); void intel_uc_cancel_requests(struct intel_uc *uc); void intel_uc_suspend(struct intel_uc *uc); void intel_uc_runtime_suspend(struct intel_uc *uc); int intel_uc_resume(struct intel_uc *uc); int intel_uc_runtime_resume(struct intel_uc *uc); /* * We need to know as early as possible if we're going to use GuC or not to * take the correct setup paths. Additionally, once we've started loading the * GuC, it is unsafe to keep executing without it because some parts of the HW, * a subset of which is not cleaned on GT reset, will start expecting the GuC FW * to be running. * To solve both these requirements, we commit to using the microcontrollers if * the relevant modparam is set and the blobs are found on the system. At this * stage, the only thing that can stop us from attempting to load the blobs on * the HW and use them is a fundamental issue (e.g. no memory for our * structures); if we hit such a problem during driver load we're broken even * without GuC, so there is no point in trying to fall back. * * Given the above, we can be in one of 4 states, with the last one implying * we're committed to using the microcontroller: * - Not supported: not available in HW and/or firmware not defined. * - Supported: available in HW and firmware defined. * - Wanted: supported + enabled in modparam. * - In use: wanted + firmware found on the system and successfully fetched. */ #define __uc_state_checker … #define uc_state_checkers … uc_state_checkers(guc, guc); uc_state_checkers(huc, huc); uc_state_checkers(guc, guc_submission); uc_state_checkers(guc, guc_slpc); uc_state_checkers(guc, guc_rc); uc_state_checkers(gsc, gsc_uc); #undef uc_state_checkers #undef __uc_state_checker static inline int intel_uc_wait_for_idle(struct intel_uc *uc, long timeout) { … } #define intel_uc_ops_function … intel_uc_ops_function(sanitize, sanitize, int, 0); intel_uc_ops_function(fetch_firmwares, init_fw, void, ); intel_uc_ops_function(cleanup_firmwares, fini_fw, void, ); intel_uc_ops_function(init, init, int, 0); intel_uc_ops_function(fini, fini, void, ); intel_uc_ops_function(init_hw, init_hw, int, 0); intel_uc_ops_function(fini_hw, fini_hw, void, ); intel_uc_ops_function(resume_mappings, resume_mappings, void, ); #undef intel_uc_ops_function #endif
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