[net-next-2.6.git] / drivers / acpi / tables.c

/*
 *  acpi_tables.c - ACPI Boot-Time Table Parsing
 *
 *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.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/init.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/irq.h>
#include <linux/errno.h>
#include <linux/acpi.h>
#include <linux/bootmem.h>

#define PREFIX			"ACPI: "

#define ACPI_MAX_TABLES		128

static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" };
static char *mps_inti_flags_trigger[] = { "dfl", "edge", "res", "level" };

static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;

void acpi_table_print_madt_entry(struct acpi_subtable_header * header)
{
	if (!header)
		return;

	switch (header->type) {

	case ACPI_MADT_TYPE_LOCAL_APIC:
		{
			struct acpi_madt_local_apic *p =
			    (struct acpi_madt_local_apic *)header;
			printk(KERN_INFO PREFIX
			       "LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n",
			       p->processor_id, p->id,
			       (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
		}
		break;

	case ACPI_MADT_TYPE_IO_APIC:
		{
			struct acpi_madt_io_apic *p =
			    (struct acpi_madt_io_apic *)header;
			printk(KERN_INFO PREFIX
			       "IOAPIC (id[0x%02x] address[0x%08x] gsi_base[%d])\n",
			       p->id, p->address, p->global_irq_base);
		}
		break;

	case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE:
		{
			struct acpi_madt_interrupt_override *p =
			    (struct acpi_madt_interrupt_override *)header;
			printk(KERN_INFO PREFIX
			       "INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n",
			       p->bus, p->source_irq, p->global_irq,
			       mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
			       mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2]);
			if (p->inti_flags  &
			    ~(ACPI_MADT_POLARITY_MASK | ACPI_MADT_TRIGGER_MASK))
				printk(KERN_INFO PREFIX
				       "INT_SRC_OVR unexpected reserved flags: 0x%x\n",
				       p->inti_flags  &
					~(ACPI_MADT_POLARITY_MASK | ACPI_MADT_TRIGGER_MASK));

		}
		break;

	case ACPI_MADT_TYPE_NMI_SOURCE:
		{
			struct acpi_madt_nmi_source *p =
			    (struct acpi_madt_nmi_source *)header;
			printk(KERN_INFO PREFIX
			       "NMI_SRC (%s %s global_irq %d)\n",
			       mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
			       mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
			       p->global_irq);
		}
		break;

	case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
		{
			struct acpi_madt_local_apic_nmi *p =
			    (struct acpi_madt_local_apic_nmi *)header;
			printk(KERN_INFO PREFIX
			       "LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n",
			       p->processor_id,
			       mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK	],
			       mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
			       p->lint);
		}
		break;

	case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE:
		{
			struct acpi_madt_local_apic_override *p =
			    (struct acpi_madt_local_apic_override *)header;
			printk(KERN_INFO PREFIX
			       "LAPIC_ADDR_OVR (address[%p])\n",
			       (void *)(unsigned long)p->address);
		}
		break;

	case ACPI_MADT_TYPE_IO_SAPIC:
		{
			struct acpi_madt_io_sapic *p =
			    (struct acpi_madt_io_sapic *)header;
			printk(KERN_INFO PREFIX
			       "IOSAPIC (id[0x%x] address[%p] gsi_base[%d])\n",
			       p->id, (void *)(unsigned long)p->address,
			       p->global_irq_base);
		}
		break;

	case ACPI_MADT_TYPE_LOCAL_SAPIC:
		{
			struct acpi_madt_local_sapic *p =
			    (struct acpi_madt_local_sapic *)header;
			printk(KERN_INFO PREFIX
			       "LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n",
			       p->processor_id, p->id, p->eid,
			       (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
		}
		break;

	case ACPI_MADT_TYPE_INTERRUPT_SOURCE:
		{
			struct acpi_madt_interrupt_source *p =
			    (struct acpi_madt_interrupt_source *)header;
			printk(KERN_INFO PREFIX
			       "PLAT_INT_SRC (%s %s type[0x%x] id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n",
			       mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
			       mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
			       p->type, p->id, p->eid, p->io_sapic_vector,
			       p->global_irq);
		}
		break;

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


int __init
acpi_table_parse_madt_family(char *id,
			     unsigned long madt_size,
			     int entry_id,
			     acpi_madt_entry_handler handler,
			     unsigned int max_entries)
{
	struct acpi_table_header *madt = NULL;
	struct acpi_subtable_header *entry;
	unsigned int count = 0;
	unsigned long madt_end;

	if (!handler)
		return -EINVAL;

	/* Locate the MADT (if exists). There should only be one. */
	acpi_get_table(id, 0, &madt);

	if (!madt) {
		printk(KERN_WARNING PREFIX "%4.4s not present\n", id);
		return -ENODEV;
	}

	madt_end = (unsigned long)madt + madt->length;

	/* Parse all entries looking for a match. */

	entry = (struct acpi_subtable_header *)
	    ((unsigned long)madt + madt_size);

	while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
	       madt_end) {
		if (entry->type == entry_id
		    && (!max_entries || count++ < max_entries))
			if (handler(entry, madt_end))
				return -EINVAL;

		entry = (struct acpi_subtable_header *)
		    ((unsigned long)entry + entry->length);
	}
	if (max_entries && count > max_entries) {
		printk(KERN_WARNING PREFIX "[%4.4s:0x%02x] ignored %i entries of "
		       "%i found\n", id, entry_id, count - max_entries, count);
	}

	return count;
}

int __init
acpi_table_parse_madt(enum acpi_madt_type id,
		      acpi_madt_entry_handler handler, unsigned int max_entries)
{
	return acpi_table_parse_madt_family(ACPI_SIG_MADT,
					    sizeof(struct acpi_table_madt), id,
					    handler, max_entries);
}

int __init acpi_table_parse(char *id, acpi_table_handler handler)
{
	struct acpi_table_header *table = NULL;
	if (!handler)
		return -EINVAL;

	acpi_get_table(id, 0, &table);
	if (table) {
		handler(table);
		return 1;
	} else
		return 0;
}

/*
 * acpi_table_init()
 *
 * find RSDP, find and checksum SDT/XSDT.
 * checksum all tables, print SDT/XSDT
 *
 * result: sdt_entry[] is initialized
 */


int __init acpi_table_init(void)
{
	acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* acpi_tables.c - ACPI Boot-Time Table Parsing
	3	*
	4	* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.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
1da177e4 LT	26	#include <linux/init.h>
1da177e4 LT	27	#include <linux/kernel.h>
1da177e4 LT	28	#include <linux/smp.h>
	29	#include <linux/string.h>
	30	#include <linux/types.h>
	31	#include <linux/irq.h>
	32	#include <linux/errno.h>
	33	#include <linux/acpi.h>
	34	#include <linux/bootmem.h>
	35
	36	#define PREFIX "ACPI: "
	37
04348e69	38	#define ACPI_MAX_TABLES 128
1da177e4	39
1da177e4 LT	40	static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" };
	41	static char *mps_inti_flags_trigger[] = { "dfl", "edge", "res", "level" };
	42
ad71860a	43	static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;
1da177e4	44
5f3b1a8b	45	void acpi_table_print_madt_entry(struct acpi_subtable_header * header)
1da177e4 LT	46	{
	47	if (!header)
	48	return;
	49
	50	switch (header->type) {
	51
5f3b1a8b	52	case ACPI_MADT_TYPE_LOCAL_APIC:
4be44fcd	53	{
5f3b1a8b AS	54	struct acpi_madt_local_apic *p =
5f3b1a8b AS	55	(struct acpi_madt_local_apic *)header;
4be44fcd LB	56	printk(KERN_INFO PREFIX
4be44fcd LB	57	"LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n",
5f3b1a8b AS	58	p->processor_id, p->id,
5f3b1a8b AS	59	(p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
4be44fcd	60	}
1da177e4 LT	61	break;
1da177e4 LT	62
5f3b1a8b	63	case ACPI_MADT_TYPE_IO_APIC:
4be44fcd	64	{
5f3b1a8b AS	65	struct acpi_madt_io_apic *p =
5f3b1a8b AS	66	(struct acpi_madt_io_apic *)header;
4be44fcd LB	67	printk(KERN_INFO PREFIX
	68	"IOAPIC (id[0x%02x] address[0x%08x] gsi_base[%d])\n",
	69	p->id, p->address, p->global_irq_base);
	70	}
1da177e4 LT	71	break;
1da177e4 LT	72
5f3b1a8b	73	case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE:
4be44fcd	74	{
5f3b1a8b AS	75	struct acpi_madt_interrupt_override *p =
5f3b1a8b AS	76	(struct acpi_madt_interrupt_override *)header;
4be44fcd LB	77	printk(KERN_INFO PREFIX
4be44fcd LB	78	"INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n",
5f3b1a8b AS	79	p->bus, p->source_irq, p->global_irq,
	80	mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
	81	mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2]);
	82	if (p->inti_flags &
	83	~(ACPI_MADT_POLARITY_MASK \| ACPI_MADT_TRIGGER_MASK))
4be44fcd LB	84	printk(KERN_INFO PREFIX
4be44fcd LB	85	"INT_SRC_OVR unexpected reserved flags: 0x%x\n",
5f3b1a8b AS	86	p->inti_flags &
5f3b1a8b AS	87	~(ACPI_MADT_POLARITY_MASK \| ACPI_MADT_TRIGGER_MASK));
1da177e4	88
4be44fcd	89	}
1da177e4 LT	90	break;
1da177e4 LT	91
5f3b1a8b	92	case ACPI_MADT_TYPE_NMI_SOURCE:
4be44fcd	93	{
5f3b1a8b AS	94	struct acpi_madt_nmi_source *p =
5f3b1a8b AS	95	(struct acpi_madt_nmi_source *)header;
4be44fcd LB	96	printk(KERN_INFO PREFIX
4be44fcd LB	97	"NMI_SRC (%s %s global_irq %d)\n",
5f3b1a8b AS	98	mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
5f3b1a8b AS	99	mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
4be44fcd LB	100	p->global_irq);
4be44fcd LB	101	}
1da177e4 LT	102	break;
1da177e4 LT	103
5f3b1a8b	104	case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
4be44fcd	105	{
5f3b1a8b AS	106	struct acpi_madt_local_apic_nmi *p =
5f3b1a8b AS	107	(struct acpi_madt_local_apic_nmi *)header;
4be44fcd LB	108	printk(KERN_INFO PREFIX
4be44fcd LB	109	"LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n",
5f3b1a8b AS	110	p->processor_id,
	111	mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK ],
	112	mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
4be44fcd LB	113	p->lint);
4be44fcd LB	114	}
1da177e4 LT	115	break;
1da177e4 LT	116
5f3b1a8b	117	case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE:
4be44fcd	118	{
5f3b1a8b AS	119	struct acpi_madt_local_apic_override *p =
5f3b1a8b AS	120	(struct acpi_madt_local_apic_override *)header;
4be44fcd LB	121	printk(KERN_INFO PREFIX
	122	"LAPIC_ADDR_OVR (address[%p])\n",
	123	(void *)(unsigned long)p->address);
	124	}
1da177e4 LT	125	break;
1da177e4 LT	126
5f3b1a8b	127	case ACPI_MADT_TYPE_IO_SAPIC:
4be44fcd	128	{
5f3b1a8b AS	129	struct acpi_madt_io_sapic *p =
5f3b1a8b AS	130	(struct acpi_madt_io_sapic *)header;
4be44fcd LB	131	printk(KERN_INFO PREFIX
	132	"IOSAPIC (id[0x%x] address[%p] gsi_base[%d])\n",
	133	p->id, (void *)(unsigned long)p->address,
	134	p->global_irq_base);
	135	}
1da177e4 LT	136	break;
1da177e4 LT	137
5f3b1a8b	138	case ACPI_MADT_TYPE_LOCAL_SAPIC:
4be44fcd	139	{
5f3b1a8b AS	140	struct acpi_madt_local_sapic *p =
5f3b1a8b AS	141	(struct acpi_madt_local_sapic *)header;
4be44fcd LB	142	printk(KERN_INFO PREFIX
4be44fcd LB	143	"LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n",
5f3b1a8b AS	144	p->processor_id, p->id, p->eid,
5f3b1a8b AS	145	(p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
4be44fcd	146	}
1da177e4 LT	147	break;
1da177e4 LT	148
5f3b1a8b	149	case ACPI_MADT_TYPE_INTERRUPT_SOURCE:
4be44fcd	150	{
5f3b1a8b AS	151	struct acpi_madt_interrupt_source *p =
5f3b1a8b AS	152	(struct acpi_madt_interrupt_source *)header;
4be44fcd LB	153	printk(KERN_INFO PREFIX
4be44fcd LB	154	"PLAT_INT_SRC (%s %s type[0x%x] id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n",
5f3b1a8b AS	155	mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
	156	mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
	157	p->type, p->id, p->eid, p->io_sapic_vector,
4be44fcd LB	158	p->global_irq);
4be44fcd LB	159	}
1da177e4 LT	160	break;
	161
	162	default:
4be44fcd LB	163	printk(KERN_WARNING PREFIX
	164	"Found unsupported MADT entry (type = 0x%x)\n",
	165	header->type);
1da177e4 LT	166	break;
	167	}
	168	}
	169
1da177e4 LT	170
1da177e4 LT	171	int __init
ceb6c468	172	acpi_table_parse_madt_family(char *id,
4be44fcd LB	173	unsigned long madt_size,
	174	int entry_id,
	175	acpi_madt_entry_handler handler,
	176	unsigned int max_entries)
1da177e4	177	{
ceb6c468	178	struct acpi_table_header *madt = NULL;
5f3b1a8b	179	struct acpi_subtable_header *entry;
4be44fcd LB	180	unsigned int count = 0;
4be44fcd LB	181	unsigned long madt_end;
1da177e4 LT	182
	183	if (!handler)
	184	return -EINVAL;
	185
	186	/* Locate the MADT (if exists). There should only be one. */
ceb6c468	187	acpi_get_table(id, 0, &madt);
1da177e4 LT	188
1da177e4 LT	189	if (!madt) {
ceb6c468	190	printk(KERN_WARNING PREFIX "%4.4s not present\n", id);
1da177e4 LT	191	return -ENODEV;
	192	}
	193
ceb6c468	194	madt_end = (unsigned long)madt + madt->length;
1da177e4 LT	195
	196	/* Parse all entries looking for a match. */
	197
5f3b1a8b	198	entry = (struct acpi_subtable_header *)
4be44fcd	199	((unsigned long)madt + madt_size);
1da177e4	200
5f3b1a8b	201	while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
4be44fcd LB	202	madt_end) {
	203	if (entry->type == entry_id
	204	&& (!max_entries \|\| count++ < max_entries))
1da177e4 LT	205	if (handler(entry, madt_end))
	206	return -EINVAL;
	207
5f3b1a8b	208	entry = (struct acpi_subtable_header *)
4be44fcd	209	((unsigned long)entry + entry->length);
1da177e4 LT	210	}
1da177e4 LT	211	if (max_entries && count > max_entries) {
ceb6c468 AS	212	printk(KERN_WARNING PREFIX "[%4.4s:0x%02x] ignored %i entries of "
ceb6c468 AS	213	"%i found\n", id, entry_id, count - max_entries, count);
1da177e4 LT	214	}
	215
	216	return count;
	217	}
	218
1da177e4	219	int __init
5f3b1a8b	220	acpi_table_parse_madt(enum acpi_madt_type id,
4be44fcd	221	acpi_madt_entry_handler handler, unsigned int max_entries)
1da177e4	222	{
5f3b1a8b	223	return acpi_table_parse_madt_family(ACPI_SIG_MADT,
4be44fcd LB	224	sizeof(struct acpi_table_madt), id,
4be44fcd LB	225	handler, max_entries);
1da177e4 LT	226	}
1da177e4 LT	227
ceb6c468	228	int __init acpi_table_parse(char *id, acpi_table_handler handler)
1da177e4	229	{
ceb6c468	230	struct acpi_table_header *table = NULL;
1da177e4 LT	231	if (!handler)
	232	return -EINVAL;
	233
ceb6c468 AS	234	acpi_get_table(id, 0, &table);
	235	if (table) {
	236	handler(table);
	237	return 1;
	238	} else
	239	return 0;
1da177e4 LT	240	}
	241
	242	/*
	243	* acpi_table_init()
	244	*
	245	* find RSDP, find and checksum SDT/XSDT.
	246	* checksum all tables, print SDT/XSDT
5f3b1a8b	247	*
1da177e4 LT	248	* result: sdt_entry[] is initialized
	249	*/
	250
5f3b1a8b	251
4be44fcd	252	int __init acpi_table_init(void)
1da177e4	253	{
ad71860a	254	acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
1da177e4 LT	255	return 0;
1da177e4 LT	256	}