82  * struct qcom_scm_qseecom_resp - QSEECOM SCM call response.
83  * @result:    Result or status of the SCM call. See &enum qcom_scm_qseecom_result.
297 	if (of_device_is_compatible(__scm ? __scm->dev->of_node : NULL, "qcom,scm-sc7180")) {  in __get_convention()
328  * Sends a command to the SCM and waits for the command to finish processing.
342 		pr_err("Unknown current SCM calling convention.\n");  in qcom_scm_call()
353  * Sends a command to the SCM and waits for the command to finish processing.
367 		pr_err("Unknown current SCM calling convention.\n");  in qcom_scm_call_atomic()
452  * Set the Linux entry point for the SCM to transfer control to when coming
458 		/* Fallback to old SCM call */  in qcom_scm_set_warm_boot_addr()
471 		/* Fallback to old SCM call */  in qcom_scm_set_cold_boot_addr()
552 static void qcom_scm_set_download_mode(struct qcom_scm *scm, u32 dload_mode)  in qcom_scm_set_download_mode()  argument
556 	if (scm->dload_mode_addr) {  in qcom_scm_set_download_mode()
557 		ret = qcom_scm_io_rmw(scm->dload_mode_addr, QCOM_DLOAD_MASK,  in qcom_scm_set_download_mode()
559 	} else if (__qcom_scm_is_call_available(scm->dev, QCOM_SCM_SVC_BOOT,  in qcom_scm_set_download_mode()
561 		ret = __qcom_scm_set_dload_mode(scm->dev, !!dload_mode);  in qcom_scm_set_download_mode()
563 		dev_err(scm->dev,  in qcom_scm_set_download_mode()
568 		dev_err(scm->dev, "failed to set download mode: %d\n", ret);  in qcom_scm_set_download_mode()
575 	if (scm->minidump_sram && (dload_mode & QCOM_DLOAD_MINIDUMP))  in qcom_scm_set_download_mode()
576 		writel_relaxed(minidump_dest, scm->minidump_sram);  in qcom_scm_set_download_mode()
669 	 * During the scm call memory protection will be enabled for the meta  in __qcom_scm_pas_init_image2()
1074  *				 is available via SCM or not
1478  * Return: true iff the SCM calls wrapped by qcom_scm_ice_invalidate_key() and
1495  * doesn't work on these SoCs; only this SCM call does.
1497  * It is assumed that the SoC has only one ICE instance being used, as this SCM
1530  * doesn't work on these SoCs; only this SCM call does.
1532  * It is assumed that the SoC has only one ICE instance being used, as this SCM
1811  * @resp: response buffer passed to SCM
1813  * Write HDCP register(s) through SCM.
1894  * SCM struct device as argument and uses it to pass the call as at the time
1895  * the SHM Bridge is enabled, the SCM is not yet fully set up and doesn't
2084 /* Lock for QSEECOM SCM call executions */
2094 	 * QSEECOM SCM calls should not be executed concurrently. Therefore, we  in __qcom_scm_qseecom_call()
2112  * qcom_scm_qseecom_call() - Perform a QSEECOM SCM call.
2113  * @desc: SCM call descriptor.
2114  * @res:  SCM call response (output).
2116  * Performs the QSEECOM SCM call described by @desc, returning the response in
2127 	 * Note: Multiple QSEECOM SCM calls should not be executed same time,  in qcom_scm_qseecom_call()
2141 		dev_err(__scm->dev, "qseecom: scm call failed with error %d\n", status);  in qcom_scm_qseecom_call()
2163  * Performs the QSEECOM SCM querying the QSEECOM version currently running in
2349 static int qcom_scm_qseecom_init(struct qcom_scm *scm)  in qcom_scm_qseecom_init()  argument
2370 	dev_info(scm->dev, "qseecom: found qseecom with version 0x%x\n", version);  in qcom_scm_qseecom_init()
2373 		dev_info(scm->dev, "qseecom: untested machine, skipping\n");  in qcom_scm_qseecom_init()
2385 	qseecom_dev->dev.parent = scm->dev;  in qcom_scm_qseecom_init()
2393 	return devm_add_action_or_reset(scm->dev, qcom_scm_qseecom_free, qseecom_dev);  in qcom_scm_qseecom_init()
2398 static int qcom_scm_qseecom_init(struct qcom_scm *scm)  in qcom_scm_qseecom_init()  argument
2497 static void qcom_scm_gunyah_wdt_init(struct qcom_scm *scm)  in qcom_scm_gunyah_wdt_init()  argument
2531 		dev_err(scm->dev, "Failed to register Gunyah watchdog device: %ld\n",  in qcom_scm_gunyah_wdt_init()
2536 	devm_add_action_or_reset(scm->dev, qcom_scm_gunyah_wdt_free,  in qcom_scm_gunyah_wdt_init()
2547 static void qcom_scm_qtee_init(struct qcom_scm *scm)  in qcom_scm_qtee_init()  argument
2563 	qtee_dev = platform_device_register_data(scm->dev, "qcomtee",  in qcom_scm_qtee_init()
2568 	devm_add_action_or_reset(scm->dev, qcom_scm_qtee_free, qtee_dev);  in qcom_scm_qtee_init()
2572  * qcom_scm_is_available() - Checks if SCM is available
2600 static int qcom_scm_query_waitq_count(struct qcom_scm *scm)  in qcom_scm_query_waitq_count()  argument
2610 	ret = qcom_scm_call_atomic(scm->dev, &desc, &res);  in qcom_scm_query_waitq_count()
2617 static int qcom_scm_get_waitq_irq(struct qcom_scm *scm)  in qcom_scm_get_waitq_irq()  argument
2630 	ret = qcom_scm_call_atomic(scm->dev, &desc, &res);  in qcom_scm_get_waitq_irq()
2639 	parent_irq_node = of_irq_find_parent(scm->dev->of_node);  in qcom_scm_get_waitq_irq()
2648 static struct completion *qcom_scm_get_completion(struct qcom_scm *scm, u32 wq_ctx)  in qcom_scm_get_completion()  argument
2650 	if (WARN_ON_ONCE(wq_ctx >= scm->wq_cnt))  in qcom_scm_get_completion()
2653 	return &scm->waitq_comps[wq_ctx];  in qcom_scm_get_completion()
2658 	struct qcom_scm *scm = dev_get_drvdata(dev);  in qcom_scm_wait_for_wq_completion()  local
2661 	wq = qcom_scm_get_completion(scm, wq_ctx);  in qcom_scm_wait_for_wq_completion()
2670 static int qcom_scm_waitq_wakeup(struct qcom_scm *scm, unsigned int wq_ctx)  in qcom_scm_waitq_wakeup()  argument
2674 	wq = qcom_scm_get_completion(scm, wq_ctx);  in qcom_scm_waitq_wakeup()
2686 	struct qcom_scm *scm = data;  in qcom_scm_irq_handler()  local
2692 			dev_err(scm->dev, "GET_WQ_CTX SMC call failed: %d\n", ret);  in qcom_scm_irq_handler()
2697 			dev_err(scm->dev, "Invalid flags received for wq_ctx: %u\n", flags);  in qcom_scm_irq_handler()
2701 		ret = qcom_scm_waitq_wakeup(scm, wq_ctx);  in qcom_scm_irq_handler()
2720 	struct qcom_scm *scm;  in set_download_mode()  local
2737 	scm = smp_load_acquire(&__scm);  in set_download_mode()
2738 	if (scm)  in set_download_mode()
2739 		qcom_scm_set_download_mode(scm, download_mode);  in set_download_mode()
2765 	struct qcom_scm *scm;  in set_minidump_dest()  local
2778 	scm = smp_load_acquire(&__scm);  in set_minidump_dest()
2779 	if (scm && scm->minidump_sram && (download_mode & QCOM_DLOAD_MINIDUMP))  in set_minidump_dest()
2780 		writel_relaxed(minidump_dest, scm->minidump_sram);  in set_minidump_dest()
2796 	struct qcom_scm *scm;  in qcom_scm_probe()  local
2800 	scm = devm_kzalloc(&pdev->dev, sizeof(*scm), GFP_KERNEL);  in qcom_scm_probe()
2801 	if (!scm)  in qcom_scm_probe()
2804 	scm->dev = &pdev->dev;  in qcom_scm_probe()
2805 	platform_set_drvdata(pdev, scm);  in qcom_scm_probe()
2806 	ret = qcom_scm_find_dload_address(&pdev->dev, &scm->dload_mode_addr);  in qcom_scm_probe()
2811 	ret = qcom_scm_map_minidump_sram(&pdev->dev, &scm->minidump_sram);  in qcom_scm_probe()
2816 	mutex_init(&scm->scm_bw_lock);  in qcom_scm_probe()
2818 	scm->path = devm_of_icc_get(&pdev->dev, NULL);  in qcom_scm_probe()
2819 	if (IS_ERR(scm->path))  in qcom_scm_probe()
2820 		return dev_err_probe(&pdev->dev, PTR_ERR(scm->path),  in qcom_scm_probe()
2823 	scm->core_clk = devm_clk_get_optional(&pdev->dev, "core");  in qcom_scm_probe()
2824 	if (IS_ERR(scm->core_clk))  in qcom_scm_probe()
2825 		return PTR_ERR(scm->core_clk);  in qcom_scm_probe()
2827 	scm->iface_clk = devm_clk_get_optional(&pdev->dev, "iface");  in qcom_scm_probe()
2828 	if (IS_ERR(scm->iface_clk))  in qcom_scm_probe()
2829 		return PTR_ERR(scm->iface_clk);  in qcom_scm_probe()
2831 	scm->bus_clk = devm_clk_get_optional(&pdev->dev, "bus");  in qcom_scm_probe()
2832 	if (IS_ERR(scm->bus_clk))  in qcom_scm_probe()
2833 		return PTR_ERR(scm->bus_clk);  in qcom_scm_probe()
2835 	scm->reset.ops = &qcom_scm_pas_reset_ops;  in qcom_scm_probe()
2836 	scm->reset.nr_resets = 1;  in qcom_scm_probe()
2837 	scm->reset.of_node = pdev->dev.of_node;  in qcom_scm_probe()
2838 	ret = devm_reset_controller_register(&pdev->dev, &scm->reset);  in qcom_scm_probe()
2843 	ret = clk_set_rate(scm->core_clk, INT_MAX);  in qcom_scm_probe()
2847 	ret = of_reserved_mem_device_init(scm->dev);  in qcom_scm_probe()
2849 		return dev_err_probe(scm->dev, ret,  in qcom_scm_probe()
2852 	ret = qcom_tzmem_enable(scm->dev);  in qcom_scm_probe()
2854 		ret = dev_err_probe(scm->dev, ret,  in qcom_scm_probe()
2864 	scm->mempool = devm_qcom_tzmem_pool_new(scm->dev, &pool_config);  in qcom_scm_probe()
2865 	if (IS_ERR(scm->mempool)) {  in qcom_scm_probe()
2866 		ret = dev_err_probe(scm->dev, PTR_ERR(scm->mempool),  in qcom_scm_probe()
2867 				    "Failed to create the SCM memory pool\n");  in qcom_scm_probe()
2871 	ret = qcom_scm_query_waitq_count(scm);  in qcom_scm_probe()
2872 	scm->wq_cnt = ret < 0 ? QCOM_SCM_DEFAULT_WAITQ_COUNT : ret;  in qcom_scm_probe()
2873 	scm->waitq_comps = devm_kcalloc(&pdev->dev, scm->wq_cnt, sizeof(*scm->waitq_comps),  in qcom_scm_probe()
2875 	if (!scm->waitq_comps)  in qcom_scm_probe()
2878 	for (i = 0; i < scm->wq_cnt; i++)  in qcom_scm_probe()
2879 		init_completion(&scm->waitq_comps[i]);  in qcom_scm_probe()
2881 	irq = qcom_scm_get_waitq_irq(scm);  in qcom_scm_probe()
2889 		ret = devm_request_threaded_irq(scm->dev, irq, NULL, qcom_scm_irq_handler,  in qcom_scm_probe()
2890 						IRQF_ONESHOT, "qcom-scm", scm);  in qcom_scm_probe()
2892 			return dev_err_probe(scm->dev, ret,  in qcom_scm_probe()
2893 					     "Failed to request qcom-scm irq\n");  in qcom_scm_probe()
2899 	 * This marks the SCM API as ready to accept user calls and can only  in qcom_scm_probe()
2903 	smp_store_release(&__scm, scm);  in qcom_scm_probe()
2908 		qcom_pas_ops_scm.dev = scm->dev;  in qcom_scm_probe()
2917 	qcom_scm_set_download_mode(scm, download_mode);  in qcom_scm_probe()
2932 	 * This means that there is no need to bring down the whole SCM driver.  in qcom_scm_probe()
2933 	 * Just log the error instead and let SCM live.  in qcom_scm_probe()
2935 	ret = qcom_scm_qseecom_init(scm);  in qcom_scm_probe()
2939 	qcom_scm_qtee_init(scm);  in qcom_scm_probe()
2942 	qcom_scm_gunyah_wdt_init(scm);  in qcom_scm_probe()
2947 	of_reserved_mem_device_release(scm->dev);  in qcom_scm_probe()
2959 	{ .compatible = "qcom,scm" },
2962 	{ .compatible = "qcom,scm-apq8064" },
2963 	{ .compatible = "qcom,scm-apq8084" },
2964 	{ .compatible = "qcom,scm-ipq4019" },
2965 	{ .compatible = "qcom,scm-msm8953" },
2966 	{ .compatible = "qcom,scm-msm8974" },
2967 	{ .compatible = "qcom,scm-msm8996" },
2988 MODULE_DESCRIPTION("Qualcomm Technologies, Inc. SCM driver");