[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
	37	ACPI_MODULE_NAME ("numa")
	38
	39	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);
	40
	41	void __init
	42	acpi_table_print_srat_entry (
	43	acpi_table_entry_header *header)
	44	{
	45
	46	ACPI_FUNCTION_NAME ("acpi_table_print_srat_entry");
	47
	48	if (!header)
	49	return;
	50
	51	switch (header->type) {
	52
	53	case ACPI_SRAT_PROCESSOR_AFFINITY:
	54	#ifdef ACPI_DEBUG_OUTPUT
	55	{
	56	struct acpi_table_processor_affinity *p =
	57	(struct acpi_table_processor_affinity*) header;
	58	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
	59	p->apic_id, p->lsapic_eid, p->proximity_domain,
	60	p->flags.enabled?"enabled":"disabled"));
	61	}
	62	#endif /* ACPI_DEBUG_OUTPUT */
	63	break;
	64
65	case ACPI_SRAT_MEMORY_AFFINITY:
66	#ifdef ACPI_DEBUG_OUTPUT
67	{
68	struct acpi_table_memory_affinity *p =
69	(struct acpi_table_memory_affinity*) header;
70	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",
71	p->base_addr_hi, p->base_addr_lo, p->length_hi, p->length_lo,
72	p->memory_type, p->proximity_domain,
73	p->flags.enabled ? "enabled" : "disabled",
74	p->flags.hot_pluggable ? " hot-pluggable" : ""));
75	}
76	#endif /* ACPI_DEBUG_OUTPUT */
77	break;
78
79	default:
80	printk(KERN_WARNING PREFIX "Found unsupported SRAT entry (type = 0x%x)\n",
81	header->type);
82	break;
83	}
84	}
85
86
87	static int __init
88	acpi_parse_slit (unsigned long phys_addr, unsigned long size)
89	{
90	struct acpi_table_slit *slit;
91	u32 localities;
92
93	if (!phys_addr \|\| !size)
94	return -EINVAL;
95
96	slit = (struct acpi_table_slit *) __va(phys_addr);
97
98	/* downcast just for %llu vs %lu for i386/ia64 */
99	localities = (u32) slit->localities;
100
101	acpi_numa_slit_init(slit);
102
103	return 0;
104	}
105
106
107	static int __init
108	acpi_parse_processor_affinity (
109	acpi_table_entry_header *header,
110	const unsigned long end)
111	{
112	struct acpi_table_processor_affinity *processor_affinity;
113
114	processor_affinity = (struct acpi_table_processor_affinity*) header;
115	if (!processor_affinity)
116	return -EINVAL;
117
118	acpi_table_print_srat_entry(header);
119
120	/* let architecture-dependent part to do it */
121	acpi_numa_processor_affinity_init(processor_affinity);
122
123	return 0;
124	}
125
126
127	static int __init
128	acpi_parse_memory_affinity (
129	acpi_table_entry_header *header,
130	const unsigned long end)
131	{
132	struct acpi_table_memory_affinity *memory_affinity;
133
134	memory_affinity = (struct acpi_table_memory_affinity*) header;
135	if (!memory_affinity)
136	return -EINVAL;
137
138	acpi_table_print_srat_entry(header);
139
140	/* let architecture-dependent part to do it */
141	acpi_numa_memory_affinity_init(memory_affinity);
142
143	return 0;
144	}
145
146
147	static int __init
148	acpi_parse_srat (unsigned long phys_addr, unsigned long size)
149	{
150	struct acpi_table_srat *srat;
151
152	if (!phys_addr \|\| !size)
153	return -EINVAL;
154
155	srat = (struct acpi_table_srat *) __va(phys_addr);
156
157	return 0;
158	}
159
160
161	int __init
162	acpi_table_parse_srat (
163	enum acpi_srat_entry_id id,
164	acpi_madt_entry_handler handler,
165	unsigned int max_entries)
166	{
167	return acpi_table_parse_madt_family(ACPI_SRAT, sizeof(struct acpi_table_srat),
168	id, handler, max_entries);
169	}
170
171
172	int __init
173	acpi_numa_init(void)
174	{
175	int result;
176
177	/* SRAT: Static Resource Affinity Table */
178	result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
179
180	if (result > 0) {
181	result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
182	acpi_parse_processor_affinity,
183	NR_CPUS);
184	result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY,
185	acpi_parse_memory_affinity,
186	NR_NODE_MEMBLKS); // IA64 specific
187	}
188
189	/* SLIT: System Locality Information Table */
190	result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
191
192	acpi_numa_arch_fixup();
193	return 0;
194	}
195
196	int
197	acpi_get_pxm(acpi_handle h)
198	{
199	unsigned long pxm;
200	acpi_status status;
201	acpi_handle handle;
202	acpi_handle phandle = h;
203
204	do {
205	handle = phandle;
206	status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
207	if (ACPI_SUCCESS(status))
208	return (int)pxm;
209	status = acpi_get_parent(handle, &phandle);
210	} while(ACPI_SUCCESS(status));
211	return -1;
212	}
213	EXPORT_SYMBOL(acpi_get_pxm);