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

   1 // SPDX-License-Identifier: MIT
   2 /*
   3  * Copyright © 2014-2019 Intel Corporation
   4  */
   5
   6 #include "gt/intel_gt.h"
   7 #include "intel_huc_fw.h"
   8 #include "i915_drv.h"
   9
  10 /**
  11  * intel_huc_fw_init_early() - initializes HuC firmware struct
  12  * @huc: intel_huc struct
  13  *
  14  * On platforms with HuC selects firmware for uploading
  15  */
  16 void intel_huc_fw_init_early(struct intel_huc *huc)
  17 {
  18         struct intel_gt *gt = huc_to_gt(huc);
  19         struct intel_uc *uc = &gt->uc;
  20         struct drm_i915_private *i915 = gt->i915;
  21
  22         intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC,
  23                                intel_uc_uses_guc(uc),
  24                                INTEL_INFO(i915)->platform, INTEL_REVID(i915));
  25 }
  26
  27 /**
  28  * intel_huc_fw_upload() - load HuC uCode to device
  29  * @huc: intel_huc structure
  30  *
  31  * Called from intel_uc_init_hw() during driver load, resume from sleep and
  32  * after a GPU reset. Note that HuC must be loaded before GuC.
  33  *
  34  * The firmware image should have already been fetched into memory, so only
  35  * check that fetch succeeded, and then transfer the image to the h/w.
  36  *
  37  * Return:      non-zero code on error
  38  */
  39 int intel_huc_fw_upload(struct intel_huc *huc)
  40 {
  41         /* HW doesn't look at destination address for HuC, so set it to 0 */
  42         return intel_uc_fw_upload(&huc->fw, 0, HUC_UKERNEL);
  43 }