64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
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// 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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#include "gt/intel_gsc.h"
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#include "gt/intel_gt.h"
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#include "intel_huc.h"
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#include "intel_huc_fw.h"
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#include "i915_drv.h"
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#include "pxp/intel_pxp_huc.h"
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int intel_huc_fw_load_and_auth_via_gsc(struct intel_huc *huc)
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{
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int ret;
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if (!intel_huc_is_loaded_by_gsc(huc))
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return -ENODEV;
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if (!intel_uc_fw_is_loadable(&huc->fw))
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return -ENOEXEC;
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/*
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* If we abort a suspend, HuC might still be loaded when the mei
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* component gets re-bound and this function called again. If so, just
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* mark the HuC as loaded.
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*/
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if (intel_huc_is_authenticated(huc)) {
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intel_uc_fw_change_status(&huc->fw, INTEL_UC_FIRMWARE_RUNNING);
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return 0;
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}
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GEM_WARN_ON(intel_uc_fw_is_loaded(&huc->fw));
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ret = intel_pxp_huc_load_and_auth(huc_to_gt(huc)->i915->pxp);
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if (ret)
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return ret;
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intel_uc_fw_change_status(&huc->fw, INTEL_UC_FIRMWARE_TRANSFERRED);
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return intel_huc_wait_for_auth_complete(huc);
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}
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/**
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* intel_huc_fw_upload() - load HuC uCode to device via DMA transfer
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* @huc: intel_huc structure
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*
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* Called from intel_uc_init_hw() during driver load, resume from sleep and
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* after a GPU reset. Note that HuC must be loaded before GuC.
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*
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* The firmware image should have already been fetched into memory, so only
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* check that fetch succeeded, and then transfer the image to the h/w.
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*
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* Return: non-zero code on error
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*/
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int intel_huc_fw_upload(struct intel_huc *huc)
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{
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if (intel_huc_is_loaded_by_gsc(huc))
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return -ENODEV;
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/* HW doesn't look at destination address for HuC, so set it to 0 */
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return intel_uc_fw_upload(&huc->fw, 0, HUC_UKERNEL);
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}
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