mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-25 00:52:45 -04:00
38e0d3fd1e
Headers in include/ should be included using the system header #include
syntax.
Fixes: 887a193b4f ("drm/i915/pxp: add huc authentication and loading command")
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Vitaly Lubart <vitaly.lubart@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221107140454.2680954-1-jani.nikula@intel.com
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright(c) 2021-2022, Intel Corporation. All rights reserved.
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*/
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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#include "gem/i915_gem_region.h"
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#include "gt/intel_gt.h"
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#include "intel_pxp.h"
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#include "intel_pxp_huc.h"
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#include "intel_pxp_tee.h"
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#include "intel_pxp_types.h"
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#include "intel_pxp_tee_interface.h"
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int intel_pxp_huc_load_and_auth(struct intel_pxp *pxp)
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{
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struct intel_gt *gt = pxp_to_gt(pxp);
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struct intel_huc *huc = >->uc.huc;
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struct pxp_tee_start_huc_auth_in huc_in = {0};
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struct pxp_tee_start_huc_auth_out huc_out = {0};
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dma_addr_t huc_phys_addr;
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u8 client_id = 0;
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u8 fence_id = 0;
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int err;
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if (!pxp->pxp_component)
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return -ENODEV;
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huc_phys_addr = i915_gem_object_get_dma_address(huc->fw.obj, 0);
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/* write the PXP message into the lmem (the sg list) */
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huc_in.header.api_version = PXP_TEE_43_APIVER;
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huc_in.header.command_id = PXP_TEE_43_START_HUC_AUTH;
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huc_in.header.status = 0;
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huc_in.header.buffer_len = sizeof(huc_in.huc_base_address);
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huc_in.huc_base_address = huc_phys_addr;
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err = intel_pxp_tee_stream_message(pxp, client_id, fence_id,
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&huc_in, sizeof(huc_in),
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&huc_out, sizeof(huc_out));
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if (err < 0) {
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drm_err(>->i915->drm,
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"Failed to send HuC load and auth command to GSC [%d]!\n",
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err);
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return err;
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}
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/*
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* HuC does sometimes survive suspend/resume (it depends on how "deep"
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* a sleep state the device reaches) so we can end up here on resume
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* with HuC already loaded, in which case the GSC will return
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* PXP_STATUS_OP_NOT_PERMITTED. We can therefore consider the GuC
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* correctly transferred in this scenario; if the same error is ever
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* returned with HuC not loaded we'll still catch it when we check the
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* authentication bit later.
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*/
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if (huc_out.header.status != PXP_STATUS_SUCCESS &&
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huc_out.header.status != PXP_STATUS_OP_NOT_PERMITTED) {
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drm_err(>->i915->drm,
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"HuC load failed with GSC error = 0x%x\n",
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huc_out.header.status);
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return -EPROTO;
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}
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return 0;
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}
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