int intel_uc_init(struct drm_i915_private *i915)
{
struct intel_guc *guc = &i915->guc;
struct intel_huc *huc = &i915->huc;
int ret;
if (!USES_GUC(i915))
return 0;
if (!HAS_GUC(i915))
return -ENODEV;
/* XXX: GuC submission is unavailable for now */
GEM_BUG_ON(USES_GUC_SUBMISSION(i915));
ret = intel_guc_init(guc);
if (ret)
return ret;
if (USES_HUC(i915)) {
ret = intel_huc_init(huc);
if (ret)
goto err_guc;
}
if (USES_GUC_SUBMISSION(i915)) {
/*
* This is stuff we need to have available at fw load time
* if we are planning to enable submission later
*/
ret = intel_guc_submission_init(guc);
if (ret)
goto err_huc;
}
return 0;
err_huc:
if (USES_HUC(i915))
intel_huc_fini(huc);
err_guc:
intel_guc_fini(guc);
return ret;
}
int intel_guc_live_selftest(struct drm_i915_private *dev_priv)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_guc_clients),
SUBTEST(igt_guc_doorbells),
};
if (!USES_GUC_SUBMISSION(dev_priv))
return 0;
return i915_subtests(tests, dev_priv);
}
void intel_uc_fini_hw(struct drm_i915_private *i915)
{
struct intel_guc *guc = &i915->guc;
if (!intel_guc_is_loaded(guc))
return;
GEM_BUG_ON(!HAS_GUC(i915));
if (USES_GUC_SUBMISSION(i915))
intel_guc_submission_disable(guc);
guc_disable_communication(guc);
__uc_sanitize(i915);
}
void intel_uc_fini(struct drm_i915_private *i915)
{
struct intel_guc *guc = &i915->guc;
if (!USES_GUC(i915))
return;
GEM_BUG_ON(!HAS_GUC(i915));
if (USES_GUC_SUBMISSION(i915))
intel_guc_submission_fini(guc);
if (USES_HUC(i915))
intel_huc_fini(&i915->huc);
intel_guc_fini(guc);
}
/**
* intel_gvt_init - initialize GVT components
* @dev_priv: drm i915 private data
*
* This function is called at the initialization stage to create a GVT device.
*
* Returns:
* Zero on success, negative error code if failed.
*
*/
int intel_gvt_init(struct drm_i915_private *dev_priv)
{
int ret;
if (i915_inject_load_failure())
return -ENODEV;
if (!i915_modparams.enable_gvt) {
DRM_DEBUG_DRIVER("GVT-g is disabled by kernel params\n");
return 0;
}
if (USES_GUC_SUBMISSION(dev_priv)) {
DRM_ERROR("i915 GVT-g loading failed due to Graphics virtualization is not yet supported with GuC submission\n");
return -EIO;
}
/*
* We're not in host or fail to find a MPT module, disable GVT-g
*/
ret = intel_gvt_init_host();
if (ret) {
DRM_DEBUG_DRIVER("Not in host or MPT modules not found\n");
goto bail;
}
ret = intel_gvt_init_device(dev_priv);
if (ret) {
DRM_DEBUG_DRIVER("Fail to init GVT device\n");
goto bail;
}
return 0;
bail:
i915_modparams.enable_gvt = 0;
return 0;
}
int intel_uc_init_hw(struct drm_i915_private *i915)
{
struct intel_guc *guc = &i915->guc;
struct intel_huc *huc = &i915->huc;
int ret, attempts;
if (!USES_GUC(i915))
return 0;
GEM_BUG_ON(!HAS_GUC(i915));
guc_reset_interrupts(guc);
/* WaEnableuKernelHeaderValidFix:skl */
/* WaEnableGuCBootHashCheckNotSet:skl,bxt,kbl */
if (IS_GEN(i915, 9))
attempts = 3;
else
attempts = 1;
while (attempts--) {
/*
* Always reset the GuC just before (re)loading, so
* that the state and timing are fairly predictable
*/
ret = __intel_uc_reset_hw(i915);
if (ret)
goto err_out;
if (USES_HUC(i915)) {
ret = intel_huc_fw_upload(huc);
if (ret)
goto err_out;
}
intel_guc_ads_reset(guc);
intel_guc_init_params(guc);
ret = intel_guc_fw_upload(guc);
if (ret == 0)
break;
DRM_DEBUG_DRIVER("GuC fw load failed: %d; will reset and "
"retry %d more time(s)\n", ret, attempts);
}
/* Did we succeded or run out of retries? */
if (ret)
goto err_log_capture;
ret = guc_enable_communication(guc);
if (ret)
goto err_log_capture;
if (USES_HUC(i915)) {
ret = intel_huc_auth(huc);
if (ret)
goto err_communication;
}
ret = intel_guc_sample_forcewake(guc);
if (ret)
goto err_communication;
if (USES_GUC_SUBMISSION(i915)) {
ret = intel_guc_submission_enable(guc);
if (ret)
goto err_communication;
}
dev_info(i915->drm.dev, "GuC firmware version %u.%u\n",
guc->fw.major_ver_found, guc->fw.minor_ver_found);
dev_info(i915->drm.dev, "GuC submission %s\n",
enableddisabled(USES_GUC_SUBMISSION(i915)));
dev_info(i915->drm.dev, "HuC %s\n",
enableddisabled(USES_HUC(i915)));
return 0;
/*
* We've failed to load the firmware :(
*/
err_communication:
guc_disable_communication(guc);
err_log_capture:
guc_capture_load_err_log(guc);
err_out:
__uc_sanitize(i915);
/*
* Note that there is no fallback as either user explicitly asked for
* the GuC or driver default option was to run with the GuC enabled.
*/
if (GEM_WARN_ON(ret == -EIO))
ret = -EINVAL;
dev_err(i915->drm.dev, "GuC initialization failed %d\n", ret);
return ret;
}
