1 // SPDX-License-Identifier: GPL-2.0-only
12  * Returns the hart ID of the given device tree node, or -ENODEV if the node
13  * isn't an enabled and valid RISC-V hart node.
15 int riscv_of_processor_hartid(struct device_node *node)  in riscv_of_processor_hartid()  argument
20 	if (!of_device_is_compatible(node, "riscv")) {  in riscv_of_processor_hartid()
22 		return -ENODEV;  in riscv_of_processor_hartid()
25 	if (of_property_read_u32(node, "reg", &hart)) {  in riscv_of_processor_hartid()
27 		return -ENODEV;  in riscv_of_processor_hartid()
30 	if (!of_device_is_available(node)) {  in riscv_of_processor_hartid()
32 		return -ENODEV;  in riscv_of_processor_hartid()
35 	if (of_property_read_string(node, "riscv,isa", &isa)) {  in riscv_of_processor_hartid()
37 		return -ENODEV;  in riscv_of_processor_hartid()
41 		return -ENODEV;  in riscv_of_processor_hartid()
48  * Find hart ID of the CPU DT node under which given DT node falls.
50  * To achieve this, we walk up the DT tree until we find an active
51  * RISC-V core (HART) node and extract the cpuid from it.
53 int riscv_of_parent_hartid(struct device_node *node)  in riscv_of_parent_hartid()  argument
55 	for (; node; node = node->parent) {  in riscv_of_parent_hartid()
56 		if (of_device_is_compatible(node, "riscv"))  in riscv_of_parent_hartid()
57 			return riscv_of_processor_hartid(node);  in riscv_of_parent_hartid()
60 	return -1;  in riscv_of_parent_hartid()
89 	*pos = cpumask_next(*pos - 1, cpu_online_mask);  in c_start()
107 	unsigned long cpu_id = (unsigned long)v - 1;  in c_show()
108 	struct device_node *node = of_get_cpu_node(cpu_id, NULL);  in c_show()  local
113 	if (!of_property_read_string(node, "riscv,isa", &isa))  in c_show()
115 	if (!of_property_read_string(node, "mmu-type", &mmu))  in c_show()
117 	if (!of_property_read_string(node, "compatible", &compat)  in c_show()
121 	of_node_put(node);  in c_show()