[deliverable/linux.git] / drivers / acpi / numa.c

/*
 *  acpi_numa.c - ACPI NUMA support
 *
 *  Copyright (C) 2002 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 */
#include <linux/module.h>
#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acmacros.h>

#define ACPI_NUMA	0x80000000
#define _COMPONENT	ACPI_NUMA
ACPI_MODULE_NAME("numa")

extern int __init acpi_table_parse_madt_family(enum acpi_table_id id,
					       unsigned long madt_size,
					       int entry_id,
					       acpi_madt_entry_handler handler,
					       unsigned int max_entries);

void __init acpi_table_print_srat_entry(acpi_table_entry_header * header)
{

	ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");

	if (!header)
		return;

	switch (header->type) {

	case ACPI_SRAT_PROCESSOR_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
		{
			struct acpi_table_processor_affinity *p =
			    (struct acpi_table_processor_affinity *)header;
			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
					  "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
					  p->apic_id, p->lsapic_eid,
					  p->proximity_domain,
					  p->flags.
					  enabled ? "enabled" : "disabled"));
		}
#endif				/* ACPI_DEBUG_OUTPUT */
		break;

	case ACPI_SRAT_MEMORY_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
		{
			struct acpi_table_memory_affinity *p =
			    (struct acpi_table_memory_affinity *)header;
			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
					  "SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
					  p->base_addr_hi, p->base_addr_lo,
					  p->length_hi, p->length_lo,
					  p->memory_type, p->proximity_domain,
					  p->flags.
					  enabled ? "enabled" : "disabled",
					  p->flags.
					  hot_pluggable ? " hot-pluggable" :
					  ""));
		}
#endif				/* ACPI_DEBUG_OUTPUT */
		break;

	default:
		printk(KERN_WARNING PREFIX
		       "Found unsupported SRAT entry (type = 0x%x)\n",
		       header->type);
		break;
	}
}

static int __init acpi_parse_slit(unsigned long phys_addr, unsigned long size)
{
	struct acpi_table_slit *slit;
	u32 localities;

	if (!phys_addr || !size)
		return -EINVAL;

	slit = (struct acpi_table_slit *)__va(phys_addr);

	/* downcast just for %llu vs %lu for i386/ia64  */
	localities = (u32) slit->localities;

	acpi_numa_slit_init(slit);

	return 0;
}

static int __init
acpi_parse_processor_affinity(acpi_table_entry_header * header,
			      const unsigned long end)
{
	struct acpi_table_processor_affinity *processor_affinity;

	processor_affinity = (struct acpi_table_processor_affinity *)header;
	if (!processor_affinity)
		return -EINVAL;

	acpi_table_print_srat_entry(header);

	/* let architecture-dependent part to do it */
	acpi_numa_processor_affinity_init(processor_affinity);

	return 0;
}

static int __init
acpi_parse_memory_affinity(acpi_table_entry_header * header,
			   const unsigned long end)
{
	struct acpi_table_memory_affinity *memory_affinity;

	memory_affinity = (struct acpi_table_memory_affinity *)header;
	if (!memory_affinity)
		return -EINVAL;

	acpi_table_print_srat_entry(header);

	/* let architecture-dependent part to do it */
	acpi_numa_memory_affinity_init(memory_affinity);

	return 0;
}

static int __init acpi_parse_srat(unsigned long phys_addr, unsigned long size)
{
	struct acpi_table_srat *srat;

	if (!phys_addr || !size)
		return -EINVAL;

	srat = (struct acpi_table_srat *)__va(phys_addr);

	return 0;
}

int __init
acpi_table_parse_srat(enum acpi_srat_entry_id id,
		      acpi_madt_entry_handler handler, unsigned int max_entries)
{
	return acpi_table_parse_madt_family(ACPI_SRAT,
					    sizeof(struct acpi_table_srat), id,
					    handler, max_entries);
}

int __init acpi_numa_init(void)
{
	int result;

	/* SRAT: Static Resource Affinity Table */
	result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);

	if (result > 0) {
		result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
					       acpi_parse_processor_affinity,
					       NR_CPUS);
		result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS);	// IA64 specific
	}

	/* SLIT: System Locality Information Table */
	result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);

	acpi_numa_arch_fixup();
	return 0;
}

int acpi_get_pxm(acpi_handle h)
{
	unsigned long pxm;
	acpi_status status;
	acpi_handle handle;
	acpi_handle phandle = h;

	do {
		handle = phandle;
		status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
		if (ACPI_SUCCESS(status))
			return (int)pxm;
		status = acpi_get_parent(handle, &phandle);
	} while (ACPI_SUCCESS(status));
	return -1;
}

EXPORT_SYMBOL(acpi_get_pxm);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* acpi_numa.c - ACPI NUMA support
	3	*
	4	* Copyright (C) 2002 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
	5	*
	6	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	23	*
	24	*/
	25	#include <linux/module.h>
	26	#include <linux/config.h>
	27	#include <linux/init.h>
	28	#include <linux/kernel.h>
	29	#include <linux/types.h>
	30	#include <linux/errno.h>
	31	#include <linux/acpi.h>
	32	#include <acpi/acpi_bus.h>
	33	#include <acpi/acmacros.h>
	34
	35	#define ACPI_NUMA 0x80000000
	36	#define _COMPONENT ACPI_NUMA
4be44fcd	37	ACPI_MODULE_NAME("numa")
1da177e4	38
4be44fcd LB	39	extern int __init acpi_table_parse_madt_family(enum acpi_table_id id,
	40	unsigned long madt_size,
	41	int entry_id,
	42	acpi_madt_entry_handler handler,
	43	unsigned int max_entries);
1da177e4	44
4be44fcd	45	void __init acpi_table_print_srat_entry(acpi_table_entry_header * header)
1da177e4 LT	46	{
1da177e4 LT	47
4be44fcd	48	ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");
1da177e4 LT	49
	50	if (!header)
	51	return;
	52
	53	switch (header->type) {
	54
	55	case ACPI_SRAT_PROCESSOR_AFFINITY:
	56	#ifdef ACPI_DEBUG_OUTPUT
4be44fcd LB	57	{
	58	struct acpi_table_processor_affinity *p =
	59	(struct acpi_table_processor_affinity *)header;
	60	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
	61	"SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
	62	p->apic_id, p->lsapic_eid,
	63	p->proximity_domain,
	64	p->flags.
	65	enabled ? "enabled" : "disabled"));
	66	}
	67	#endif /* ACPI_DEBUG_OUTPUT */
1da177e4 LT	68	break;
	69
	70	case ACPI_SRAT_MEMORY_AFFINITY:
	71	#ifdef ACPI_DEBUG_OUTPUT
4be44fcd LB	72	{
	73	struct acpi_table_memory_affinity *p =
	74	(struct acpi_table_memory_affinity *)header;
	75	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
	76	"SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
	77	p->base_addr_hi, p->base_addr_lo,
	78	p->length_hi, p->length_lo,
	79	p->memory_type, p->proximity_domain,
	80	p->flags.
	81	enabled ? "enabled" : "disabled",
	82	p->flags.
	83	hot_pluggable ? " hot-pluggable" :
	84	""));
	85	}
	86	#endif /* ACPI_DEBUG_OUTPUT */
1da177e4 LT	87	break;
	88
	89	default:
4be44fcd LB	90	printk(KERN_WARNING PREFIX
	91	"Found unsupported SRAT entry (type = 0x%x)\n",
	92	header->type);
1da177e4 LT	93	break;
	94	}
	95	}
	96
4be44fcd	97	static int __init acpi_parse_slit(unsigned long phys_addr, unsigned long size)
1da177e4	98	{
4be44fcd LB	99	struct acpi_table_slit *slit;
4be44fcd LB	100	u32 localities;
1da177e4 LT	101
	102	if (!phys_addr \|\| !size)
	103	return -EINVAL;
	104
4be44fcd	105	slit = (struct acpi_table_slit *)__va(phys_addr);
1da177e4 LT	106
	107	/* downcast just for %llu vs %lu for i386/ia64 */
	108	localities = (u32) slit->localities;
	109
	110	acpi_numa_slit_init(slit);
	111
	112	return 0;
	113	}
	114
1da177e4	115	static int __init
4be44fcd LB	116	acpi_parse_processor_affinity(acpi_table_entry_header * header,
4be44fcd LB	117	const unsigned long end)
1da177e4 LT	118	{
	119	struct acpi_table_processor_affinity *processor_affinity;
	120
4be44fcd	121	processor_affinity = (struct acpi_table_processor_affinity *)header;
1da177e4 LT	122	if (!processor_affinity)
	123	return -EINVAL;
	124
	125	acpi_table_print_srat_entry(header);
	126
	127	/* let architecture-dependent part to do it */
	128	acpi_numa_processor_affinity_init(processor_affinity);
	129
	130	return 0;
	131	}
	132
1da177e4	133	static int __init
4be44fcd LB	134	acpi_parse_memory_affinity(acpi_table_entry_header * header,
4be44fcd LB	135	const unsigned long end)
1da177e4 LT	136	{
	137	struct acpi_table_memory_affinity *memory_affinity;
	138
4be44fcd	139	memory_affinity = (struct acpi_table_memory_affinity *)header;
1da177e4 LT	140	if (!memory_affinity)
	141	return -EINVAL;
	142
	143	acpi_table_print_srat_entry(header);
	144
	145	/* let architecture-dependent part to do it */
	146	acpi_numa_memory_affinity_init(memory_affinity);
	147
	148	return 0;
	149	}
	150
4be44fcd	151	static int __init acpi_parse_srat(unsigned long phys_addr, unsigned long size)
1da177e4	152	{
4be44fcd	153	struct acpi_table_srat *srat;
1da177e4 LT	154
	155	if (!phys_addr \|\| !size)
	156	return -EINVAL;
	157
4be44fcd	158	srat = (struct acpi_table_srat *)__va(phys_addr);
1da177e4 LT	159
	160	return 0;
	161	}
	162
1da177e4	163	int __init
4be44fcd LB	164	acpi_table_parse_srat(enum acpi_srat_entry_id id,
4be44fcd LB	165	acpi_madt_entry_handler handler, unsigned int max_entries)
1da177e4	166	{
4be44fcd LB	167	return acpi_table_parse_madt_family(ACPI_SRAT,
	168	sizeof(struct acpi_table_srat), id,
	169	handler, max_entries);
1da177e4 LT	170	}
1da177e4 LT	171
4be44fcd	172	int __init acpi_numa_init(void)
1da177e4	173	{
4be44fcd	174	int result;
1da177e4 LT	175
	176	/* SRAT: Static Resource Affinity Table */
	177	result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
	178
	179	if (result > 0) {
	180	result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
	181	acpi_parse_processor_affinity,
	182	NR_CPUS);
4be44fcd	183	result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS); // IA64 specific
1da177e4 LT	184	}
	185
	186	/* SLIT: System Locality Information Table */
	187	result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
	188
	189	acpi_numa_arch_fixup();
	190	return 0;
	191	}
	192
4be44fcd	193	int acpi_get_pxm(acpi_handle h)
1da177e4 LT	194	{
	195	unsigned long pxm;
	196	acpi_status status;
	197	acpi_handle handle;
	198	acpi_handle phandle = h;
	199
	200	do {
	201	handle = phandle;
	202	status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
	203	if (ACPI_SUCCESS(status))
	204	return (int)pxm;
	205	status = acpi_get_parent(handle, &phandle);
4be44fcd	206	} while (ACPI_SUCCESS(status));
1da177e4 LT	207	return -1;
1da177e4 LT	208	}
4be44fcd	209
1da177e4	210	EXPORT_SYMBOL(acpi_get_pxm);