1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2023-2024, Ventana Micro Systems Inc
36 	return (elem0->type > elem1->type) - (elem0->type < elem1->type);  in irqchip_cmp_func()
40  * On RISC-V, RINTC structures in MADT should be probed before any other
42  * controller subtypes in MADT of ACPI spec for RISC-V are defined in
43  * the incremental order like RINTC(24)->IMSIC(25)->APLIC(26)->PLIC(27).
51 	if (nr == 1 || !ACPI_COMPARE_NAMESEG(ACPI_SIG_MADT, ape->id))  in arch_sort_irqchip_probe()
63 		if (gsi_base == ext_intc_element->gsi_base) {  in riscv_acpi_update_gsi_handle()
64 			ext_intc_element->handle = handle;  in riscv_acpi_update_gsi_handle()
80 		if (ext_intc_element->handle == ACPI_HANDLE_FWNODE(fwnode)) {  in riscv_acpi_get_gsi_info()
81 			*gsi_base = ext_intc_element->gsi_base;  in riscv_acpi_get_gsi_info()
82 			*id = ext_intc_element->id;  in riscv_acpi_get_gsi_info()
83 			*nr_irqs = ext_intc_element->nr_irqs;  in riscv_acpi_get_gsi_info()
85 				*nr_idcs = ext_intc_element->nr_idcs;  in riscv_acpi_get_gsi_info()
91 	return -ENODEV;  in riscv_acpi_get_gsi_info()
102 		if (gsi >= ext_intc_element->gsi_base &&  in riscv_acpi_get_gsi_domain_id()
103 		    gsi < (ext_intc_element->gsi_base + ext_intc_element->nr_irqs)) {  in riscv_acpi_get_gsi_domain_id()
104 			adev = acpi_fetch_acpi_dev(ext_intc_element->handle);  in riscv_acpi_get_gsi_domain_id()
122 		return -ENOMEM;  in riscv_acpi_register_ext_intc()
124 	ext_intc_element->gsi_base = gsi_base;  in riscv_acpi_register_ext_intc()
125 	ext_intc_element->nr_irqs = nr_irqs;  in riscv_acpi_register_ext_intc()
126 	ext_intc_element->nr_idcs = nr_idcs;  in riscv_acpi_register_ext_intc()
127 	ext_intc_element->id = id;  in riscv_acpi_register_ext_intc()
128 	list_add_tail(&ext_intc_element->list, &ext_intc_list);  in riscv_acpi_register_ext_intc()
163 	return riscv_acpi_register_ext_intc(aplic->gsi_base, aplic->num_sources, aplic->num_idcs,  in riscv_acpi_aplic_parse_madt()
164 					    aplic->id, ACPI_RISCV_IRQCHIP_APLIC);  in riscv_acpi_aplic_parse_madt()
170 	struct acpi_madt_plic *plic = (struct acpi_madt_plic *)header;  in riscv_acpi_plic_parse_madt()  local
172 	return riscv_acpi_register_ext_intc(plic->gsi_base, plic->num_irqs, 0,  in riscv_acpi_plic_parse_madt()
173 					    plic->id, ACPI_RISCV_IRQCHIP_PLIC);  in riscv_acpi_plic_parse_madt()
178 	/* There can be either PLIC or APLIC */  in riscv_acpi_init_gsi_mapping()
195 		if (gsi >= ext_intc_element->gsi_base &&  in riscv_acpi_get_gsi_handle()
196 		    gsi < (ext_intc_element->gsi_base + ext_intc_element->nr_irqs))  in riscv_acpi_get_gsi_handle()
197 			return ext_intc_element->handle;  in riscv_acpi_get_gsi_handle()
209 	switch (ares->type) {  in riscv_acpi_irq_get_parent()
211 		irq = &ares->data.irq;  in riscv_acpi_irq_get_parent()
212 		if (ctx->index >= irq->interrupt_count) {  in riscv_acpi_irq_get_parent()
213 			ctx->index -= irq->interrupt_count;  in riscv_acpi_irq_get_parent()
216 		ctx->handle = riscv_acpi_get_gsi_handle(irq->interrupts[ctx->index]);  in riscv_acpi_irq_get_parent()
219 		eirq = &ares->data.extended_irq;  in riscv_acpi_irq_get_parent()
220 		if (eirq->producer_consumer == ACPI_PRODUCER)  in riscv_acpi_irq_get_parent()
223 		if (ctx->index >= eirq->interrupt_count) {  in riscv_acpi_irq_get_parent()
224 			ctx->index -= eirq->interrupt_count;  in riscv_acpi_irq_get_parent()
229 		if (eirq->resource_source.string_length)  in riscv_acpi_irq_get_parent()
232 		ctx->handle = riscv_acpi_get_gsi_handle(eirq->interrupts[ctx->index]);  in riscv_acpi_irq_get_parent()
241 	struct acpi_irq_dep_ctx ctx = {-EINVAL, index, NULL};  in riscv_acpi_irq_get_dep()
249 		return 1;  in riscv_acpi_irq_get_dep()
272 	while (entry && (entry->length > 0)) {  in riscv_acpi_add_prt_dep()
273 		if (entry->source[0]) {  in riscv_acpi_add_prt_dep()
274 			acpi_get_handle(handle, entry->source, &link_handle);  in riscv_acpi_add_prt_dep()
275 			dep_devices.count = 1;  in riscv_acpi_add_prt_dep()
276 			dep_devices.handles = kcalloc(1, sizeof(*dep_devices.handles), GFP_KERNEL);  in riscv_acpi_add_prt_dep()
285 			gsi_handle = riscv_acpi_get_gsi_handle(entry->source_index);  in riscv_acpi_add_prt_dep()
286 			dep_devices.count = 1;  in riscv_acpi_add_prt_dep()
287 			dep_devices.handles = kcalloc(1, sizeof(*dep_devices.handles), GFP_KERNEL);  in riscv_acpi_add_prt_dep()
298 			((unsigned long)entry + entry->length);  in riscv_acpi_add_prt_dep()
315 		dep_devices.count = 1;  in riscv_acpi_add_irq_dep()
316 		dep_devices.handles = kcalloc(1, sizeof(*dep_devices.handles), GFP_KERNEL);  in riscv_acpi_add_irq_dep()