linux/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2014-2019 Intel Corporation
 */

#include "gt/intel_gsc.h"
#include "gt/intel_gt.h"
#include "intel_gsc_binary_headers.h"
#include "intel_gsc_uc_heci_cmd_submit.h"
#include "intel_huc.h"
#include "intel_huc_fw.h"
#include "intel_huc_print.h"
#include "i915_drv.h"
#include "pxp/intel_pxp_huc.h"
#include "pxp/intel_pxp_cmd_interface_43.h"

struct mtl_huc_auth_msg_in { … } __packed;

struct mtl_huc_auth_msg_out { … } __packed;

int intel_huc_fw_auth_via_gsccs(struct intel_huc *huc)
{ … }

static bool css_valid(const void *data, size_t size)
{ … }

static inline u32 entry_offset(const struct intel_gsc_cpd_entry *entry)
{ … }

int intel_huc_fw_get_binary_info(struct intel_uc_fw *huc_fw, const void *data, size_t size)
{ … }

int intel_huc_fw_load_and_auth_via_gsc(struct intel_huc *huc)
{ … }

/**
 * intel_huc_fw_upload() - load HuC uCode to device via DMA transfer
 * @huc: intel_huc structure
 *
 * Called from intel_uc_init_hw() during driver load, resume from sleep and
 * after a GPU reset. Note that HuC must be loaded before GuC.
 *
 * The firmware image should have already been fetched into memory, so only
 * check that fetch succeeded, and then transfer the image to the h/w.
 *
 * Return:	non-zero code on error
 */
int intel_huc_fw_upload(struct intel_huc *huc)
{ … }