119 lines
3.9 KiB
C
119 lines
3.9 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_UC_H_
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#define _INTEL_UC_H_
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#include "intel_gsc_uc.h"
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#include "intel_guc.h"
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#include "intel_guc_rc.h"
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#include "intel_guc_submission.h"
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#include "intel_guc_slpc.h"
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#include "intel_huc.h"
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#include "i915_params.h"
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struct intel_uc;
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struct intel_uc_ops {
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int (*sanitize)(struct intel_uc *uc);
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void (*init_fw)(struct intel_uc *uc);
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void (*fini_fw)(struct intel_uc *uc);
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int (*init)(struct intel_uc *uc);
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void (*fini)(struct intel_uc *uc);
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int (*init_hw)(struct intel_uc *uc);
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void (*fini_hw)(struct intel_uc *uc);
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};
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struct intel_uc {
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struct intel_uc_ops const *ops;
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struct intel_gsc_uc gsc;
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struct intel_guc guc;
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struct intel_huc huc;
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/* Snapshot of GuC log from last failed load */
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struct drm_i915_gem_object *load_err_log;
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bool reset_in_progress;
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};
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void intel_uc_init_early(struct intel_uc *uc);
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void intel_uc_init_late(struct intel_uc *uc);
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void intel_uc_driver_late_release(struct intel_uc *uc);
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void intel_uc_driver_remove(struct intel_uc *uc);
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void intel_uc_init_mmio(struct intel_uc *uc);
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void intel_uc_reset_prepare(struct intel_uc *uc);
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void intel_uc_reset(struct intel_uc *uc, intel_engine_mask_t stalled);
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void intel_uc_reset_finish(struct intel_uc *uc);
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void intel_uc_cancel_requests(struct intel_uc *uc);
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void intel_uc_suspend(struct intel_uc *uc);
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void intel_uc_runtime_suspend(struct intel_uc *uc);
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int intel_uc_resume(struct intel_uc *uc);
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int intel_uc_runtime_resume(struct intel_uc *uc);
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/*
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* We need to know as early as possible if we're going to use GuC or not to
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* take the correct setup paths. Additionally, once we've started loading the
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* GuC, it is unsafe to keep executing without it because some parts of the HW,
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* a subset of which is not cleaned on GT reset, will start expecting the GuC FW
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* to be running.
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* To solve both these requirements, we commit to using the microcontrollers if
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* the relevant modparam is set and the blobs are found on the system. At this
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* stage, the only thing that can stop us from attempting to load the blobs on
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* the HW and use them is a fundamental issue (e.g. no memory for our
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* structures); if we hit such a problem during driver load we're broken even
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* without GuC, so there is no point in trying to fall back.
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*
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* Given the above, we can be in one of 4 states, with the last one implying
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* we're committed to using the microcontroller:
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* - Not supported: not available in HW and/or firmware not defined.
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* - Supported: available in HW and firmware defined.
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* - Wanted: supported + enabled in modparam.
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* - In use: wanted + firmware found on the system and successfully fetched.
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*/
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#define __uc_state_checker(x, func, state, required) \
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static inline bool intel_uc_##state##_##func(struct intel_uc *uc) \
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{ \
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return intel_##func##_is_##required(&uc->x); \
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}
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#define uc_state_checkers(x, func) \
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__uc_state_checker(x, func, supports, supported) \
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__uc_state_checker(x, func, wants, wanted) \
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__uc_state_checker(x, func, uses, used)
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uc_state_checkers(guc, guc);
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uc_state_checkers(huc, huc);
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uc_state_checkers(guc, guc_submission);
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uc_state_checkers(guc, guc_slpc);
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uc_state_checkers(guc, guc_rc);
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uc_state_checkers(gsc, gsc_uc);
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#undef uc_state_checkers
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#undef __uc_state_checker
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static inline int intel_uc_wait_for_idle(struct intel_uc *uc, long timeout)
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{
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return intel_guc_wait_for_idle(&uc->guc, timeout);
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}
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#define intel_uc_ops_function(_NAME, _OPS, _TYPE, _RET) \
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static inline _TYPE intel_uc_##_NAME(struct intel_uc *uc) \
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{ \
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if (uc->ops->_OPS) \
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return uc->ops->_OPS(uc); \
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return _RET; \
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}
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intel_uc_ops_function(sanitize, sanitize, int, 0);
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intel_uc_ops_function(fetch_firmwares, init_fw, void, );
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intel_uc_ops_function(cleanup_firmwares, fini_fw, void, );
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intel_uc_ops_function(init, init, int, 0);
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intel_uc_ops_function(fini, fini, void, );
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intel_uc_ops_function(init_hw, init_hw, int, 0);
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intel_uc_ops_function(fini_hw, fini_hw, void, );
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#undef intel_uc_ops_function
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#endif
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