C++ (Cpp) GEM_WARN_ON Examples

Example #1

File: intel_workarounds.c Project: krzk/linux

static void whitelist_reg(struct whitelist *w, i915_reg_t reg)
{
	if (GEM_WARN_ON(w->count >= RING_MAX_NONPRIV_SLOTS))
		return;

	w->reg[w->count++] = reg;
}

Example #2

File: intel_uc.c Project: grate-driver/linux

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;
}