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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2022 Intel Corporation
*/
#ifndef _INTEL_GSC_UC_H_
#define _INTEL_GSC_UC_H_
#include "intel_uc_fw.h"
struct drm_printer;
struct i915_vma;
struct intel_context;
struct i915_gsc_proxy_component;
struct intel_gsc_uc {
/* Generic uC firmware management */
struct intel_uc_fw fw;
/* GSC-specific additions */
/*
* The GSC has 3 version numbers:
* - Release version (incremented with each build)
* - Security version (incremented on security fix)
* - Compatibility version (incremented on interface change)
*
* The one we care about to use the binary is the last one, so that's
* the one we save inside the intel_uc_fw structure. The other two
* versions are only used for debug/info purposes, so we save them here.
*
* Note that the release and security versions are available in the
* binary header, while the compatibility version must be queried after
* loading the binary.
*/
struct intel_uc_fw_ver release;
u32 security_version;
struct i915_vma *local; /* private memory for GSC usage */
void __iomem *local_vaddr; /* pointer to access the private memory */
struct intel_context *ce; /* for submission to GSC FW via GSC engine */
/* for delayed load and proxy handling */
struct workqueue_struct *wq;
struct work_struct work;
u32 gsc_work_actions; /* protected by gt->irq_lock */
#define GSC_ACTION_FW_LOAD BIT(0)
#define GSC_ACTION_SW_PROXY BIT(1)
struct {
struct i915_gsc_proxy_component *component;
bool component_added;
struct i915_vma *vma;
void *to_gsc;
void *to_csme;
struct mutex mutex; /* protects the tee channel binding */
} proxy;
};
void intel_gsc_uc_init_early(struct intel_gsc_uc *gsc);
int intel_gsc_uc_init(struct intel_gsc_uc *gsc);
void intel_gsc_uc_fini(struct intel_gsc_uc *gsc);
void intel_gsc_uc_suspend(struct intel_gsc_uc *gsc);
void intel_gsc_uc_resume(struct intel_gsc_uc *gsc);
void intel_gsc_uc_flush_work(struct intel_gsc_uc *gsc);
void intel_gsc_uc_load_start(struct intel_gsc_uc *gsc);
void intel_gsc_uc_load_status(struct intel_gsc_uc *gsc, struct drm_printer *p);
static inline bool intel_gsc_uc_is_supported(struct intel_gsc_uc *gsc)
{
return intel_uc_fw_is_supported(&gsc->fw);
}
static inline bool intel_gsc_uc_is_wanted(struct intel_gsc_uc *gsc)
{
return intel_uc_fw_is_enabled(&gsc->fw);
}
static inline bool intel_gsc_uc_is_used(struct intel_gsc_uc *gsc)
{
GEM_BUG_ON(__intel_uc_fw_status(&gsc->fw) == INTEL_UC_FIRMWARE_SELECTED);
return intel_uc_fw_is_available(&gsc->fw);
}
#endif
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