1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  acpi.c - Architecture-Specific Low-Level ACPI Support
7  *  Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
8  *	David Mosberger-Tang <davidm@hpl.hp.com>
10  *  Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
13  *  Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
49 	[0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
60 	int vector = -1;  in acpi_request_vector()
80 /* --------------------------------------------------------------------------
81                             Boot-time Table Parsing
82    -------------------------------------------------------------------------- */
97 		return -EINVAL;  in acpi_parse_lapic_addr_ovr()
99 	if (lapic->address) {  in acpi_parse_lapic_addr_ovr()
101 		ipi_base_addr = ioremap(lapic->address, 0);  in acpi_parse_lapic_addr_ovr()
115 	if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {  in acpi_parse_lsapic()
118 		    (lsapic->id << 8) | lsapic->eid;  in acpi_parse_lsapic()
135 		return -EINVAL;  in acpi_parse_lapic_nmi()
149 		return -EINVAL;  in acpi_parse_iosapic()
151 	return iosapic_init(iosapic->address, iosapic->global_irq_base);  in acpi_parse_iosapic()
166 		return -EINVAL;  in acpi_parse_plat_int_src()
172 	vector = iosapic_register_platform_intr(plintsrc->type,  in acpi_parse_plat_int_src()
173 						plintsrc->global_irq,  in acpi_parse_plat_int_src()
174 						plintsrc->io_sapic_vector,  in acpi_parse_plat_int_src()
175 						plintsrc->eid,  in acpi_parse_plat_int_src()
176 						plintsrc->id,  in acpi_parse_plat_int_src()
177 						((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) ==  in acpi_parse_plat_int_src()
180 						((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) ==  in acpi_parse_plat_int_src()
184 	platform_intr_list[plintsrc->type] = vector;  in acpi_parse_plat_int_src()
186 		acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE;  in acpi_parse_plat_int_src()
192 	acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff;  in acpi_parse_plat_int_src()
205 	 * is present, otherwise return that its re-targettable  in can_cpei_retarget()
249 		return -EINVAL;  in acpi_parse_int_src_ovr()
251 	iosapic_override_isa_irq(p->source_irq, p->global_irq,  in acpi_parse_int_src_ovr()
252 				 ((p->inti_flags & ACPI_MADT_POLARITY_MASK) ==  in acpi_parse_int_src_ovr()
255 				 ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) ==  in acpi_parse_int_src_ovr()
269 		return -EINVAL;  in acpi_parse_nmi_src()
294 	acpi_madt_rev = acpi_madt->header.revision;  in acpi_parse_madt()
300 	has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT;  in acpi_parse_madt()
306 	if (acpi_madt->address)  in acpi_parse_madt()
307 		ipi_base_addr = ioremap(acpi_madt->address, 0);  in acpi_parse_madt()
311 	acpi_madt_oem_check(acpi_madt->header.oem_id,  in acpi_parse_madt()
312 			    acpi_madt->header.oem_table_id);  in acpi_parse_madt()
335 	pxm = pa->proximity_domain_lo;  in get_processor_proximity_domain()
337 		pxm += pa->proximity_domain_hi[0] << 8;  in get_processor_proximity_domain()
346 	pxm = ma->proximity_domain;  in get_memory_proximity_domain()
354  * ACPI 2.0 SLIT (System Locality Information Table)
362 	    + slit->locality_count * slit->locality_count;  in acpi_numa_slit_init()
363 	if (slit->header.length != len) {  in acpi_numa_slit_init()
366 		       len, slit->header.length);  in acpi_numa_slit_init()
377 	if (!(pa->flags & ACPI_SRAT_CPU_ENABLED))  in acpi_numa_processor_affinity_init()
392 	    (pa->apic_id << 8) | (pa->local_sapic_eid);  in acpi_numa_processor_affinity_init()
409 	paddr = ma->base_address;  in acpi_numa_memory_affinity_init()
410 	size = ma->length;  in acpi_numa_memory_affinity_init()
413 	if (!(ma->flags & ACPI_SRAT_MEM_ENABLED))  in acpi_numa_memory_affinity_init()
414 		return -1;  in acpi_numa_memory_affinity_init()
418 		return -EINVAL;  in acpi_numa_memory_affinity_init()
427 		if (paddr < p->start_paddr)  in acpi_numa_memory_affinity_init()
431 		for (q = pend - 1; q >= p; q--)  in acpi_numa_memory_affinity_init()
434 	p->start_paddr = paddr;  in acpi_numa_memory_affinity_init()
435 	p->size = size;  in acpi_numa_memory_affinity_init()
436 	p->nid = pxm;  in acpi_numa_memory_affinity_init()
453 	 * MCD - This can probably be dropped now.  No need for pxm ID to node ID  in acpi_numa_fixup()
495 	memset(numa_slit, -1, sizeof(numa_slit));  in acpi_numa_fixup()
496 	for (i = 0; i < slit_table->locality_count; i++) {  in acpi_numa_fixup()
500 		for (j = 0; j < slit_table->locality_count; j++) {  in acpi_numa_fixup()
505 			    slit_table->entry[i * slit_table->locality_count + j];  in acpi_numa_fixup()
510 	printk("ACPI 2.0 SLIT locality table:\n");  in acpi_numa_fixup()
560 	if (fadt_header->revision != 3)  in acpi_parse_fadt()
561 		return -ENODEV;	/* Only deal with ACPI 2.0 FADT */  in acpi_parse_fadt()
565 	acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE,  in acpi_parse_fadt()
587 		       "Error parsing MADT - no LAPIC entries\n");  in early_acpi_boot_init()
601 	/* Make boot-up look pretty */  in early_acpi_boot_init()
613 	 * ----  in acpi_boot_init()
616 	 * information -- the successor to MPS tables.  in acpi_boot_init()
640 		       "Error parsing MADT - no IOSAPIC entries\n");  in acpi_boot_init()
643 	/* System-Level Interrupt Routing */  in acpi_boot_init()
693 		if (tmp == -1)  in acpi_gsi_to_irq()
694 			return -1;  in acpi_gsi_to_irq()
703 		return -1;  in acpi_isa_irq_to_gsi()
716 	 * We don't have cpu-only-node hotadd. But if the system equips  in acpi_map_cpu2node()
728 int additional_cpus __initdata = -1;
742  * are onlined, or offlined. The reason is per-cpu data-structures
748  * - Ashok Raj
751  * - If the BIOS specified disabled CPUs in ACPI/mptables use that.
752  * - The user can overwrite it with additional_cpus=NUM
753  * - Otherwise don't reserve additional CPUs.
760 	disabled_cpus = total_cpus - available_cpus;  in prefill_possible_map()
762  	if (additional_cpus == -1) {  in prefill_possible_map()
775 		possible, max((possible - available_cpus), 0));  in prefill_possible_map()
789 		return -EINVAL;  in _acpi_map_lsapic()
812 	ia64_cpu_to_sapicid[cpu] = -1;  in acpi_unmap_cpu()
816 	/* NUMA specific cleanup's */  in acpi_unmap_cpu()
842 	if (obj->type != ACPI_TYPE_BUFFER ||  in acpi_map_iosapic()
843 	    obj->buffer.length < sizeof(*iosapic)) {  in acpi_map_iosapic()
848 	iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;  in acpi_map_iosapic()
850 	if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {  in acpi_map_iosapic()
855 	gsi_base = iosapic->global_irq_base;  in acpi_map_iosapic()
904  * acpi_suspend_lowlevel() - save kernel state and suspend.