/* 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 {
int (*sanitize)(struct intel_uc *uc);
void (*init_fw)(struct intel_uc *uc);
void (*fini_fw)(struct intel_uc *uc);
int (*init)(struct intel_uc *uc);
void (*fini)(struct intel_uc *uc);
int (*init_hw)(struct intel_uc *uc);
void (*fini_hw)(struct intel_uc *uc);
void (*resume_mappings)(struct intel_uc *uc);
};
struct intel_uc {
struct intel_uc_ops const *ops;
struct intel_gsc_uc gsc;
struct intel_guc guc;
struct intel_huc huc;
/* Snapshot of GuC log from last failed load */
struct drm_i915_gem_object *load_err_log;
bool reset_in_progress;
bool fw_table_invalid;
};
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(x, func, state, required) \
static inline bool intel_uc_## state## _## func(struct intel_uc *uc) \
{ \
return intel_## func## _is_## required(&uc->x); \
}
#define uc_state_checkers(x, func) \
__uc_state_checker(x, func, supports, supported) \
__uc_state_checker(x, func, wants, wanted) \
__uc_state_checker(x, func, uses, used)
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)
{
return intel_guc_wait_for_idle(&uc->guc, timeout);
}
#define intel_uc_ops_function(_NAME, _OPS, _TYPE, _RET) \
static inline _TYPE intel_uc_## _NAME(struct intel_uc *uc) \
{ \
if (uc->ops->_OPS) \
return uc->ops->_OPS(uc); \
return _RET; \
}
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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