[PATCH] sysctl: move CTL_FRV into sysctl.h where it belongs
[linux-2.6/linux-2.6-openrd.git] / drivers / acpi / tables.c
blob45bd17313c4a8a9cc92a274cc5fbaa88cdee328e
1 /*
2 * acpi_tables.c - ACPI Boot-Time Table Parsing
4 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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
22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #include <linux/init.h>
27 #include <linux/kernel.h>
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>
36 #define PREFIX "ACPI: "
38 #define ACPI_MAX_TABLES 128
40 static char *mps_inti_flags_polarity[] = { "dfl", "high", "res", "low" };
41 static char *mps_inti_flags_trigger[] = { "dfl", "edge", "res", "level" };
43 static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;
45 void acpi_table_print_madt_entry(struct acpi_subtable_header * header)
47 if (!header)
48 return;
50 switch (header->type) {
52 case ACPI_MADT_TYPE_LOCAL_APIC:
54 struct acpi_madt_local_apic *p =
55 (struct acpi_madt_local_apic *)header;
56 printk(KERN_INFO PREFIX
57 "LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n",
58 p->processor_id, p->id,
59 (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
61 break;
63 case ACPI_MADT_TYPE_IO_APIC:
65 struct acpi_madt_io_apic *p =
66 (struct acpi_madt_io_apic *)header;
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);
71 break;
73 case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE:
75 struct acpi_madt_interrupt_override *p =
76 (struct acpi_madt_interrupt_override *)header;
77 printk(KERN_INFO PREFIX
78 "INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n",
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))
84 printk(KERN_INFO PREFIX
85 "INT_SRC_OVR unexpected reserved flags: 0x%x\n",
86 p->inti_flags &
87 ~(ACPI_MADT_POLARITY_MASK | ACPI_MADT_TRIGGER_MASK));
90 break;
92 case ACPI_MADT_TYPE_NMI_SOURCE:
94 struct acpi_madt_nmi_source *p =
95 (struct acpi_madt_nmi_source *)header;
96 printk(KERN_INFO PREFIX
97 "NMI_SRC (%s %s global_irq %d)\n",
98 mps_inti_flags_polarity[p->inti_flags & ACPI_MADT_POLARITY_MASK],
99 mps_inti_flags_trigger[(p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2],
100 p->global_irq);
102 break;
104 case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
106 struct acpi_madt_local_apic_nmi *p =
107 (struct acpi_madt_local_apic_nmi *)header;
108 printk(KERN_INFO PREFIX
109 "LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n",
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],
113 p->lint);
115 break;
117 case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE:
119 struct acpi_madt_local_apic_override *p =
120 (struct acpi_madt_local_apic_override *)header;
121 printk(KERN_INFO PREFIX
122 "LAPIC_ADDR_OVR (address[%p])\n",
123 (void *)(unsigned long)p->address);
125 break;
127 case ACPI_MADT_TYPE_IO_SAPIC:
129 struct acpi_madt_io_sapic *p =
130 (struct acpi_madt_io_sapic *)header;
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);
136 break;
138 case ACPI_MADT_TYPE_LOCAL_SAPIC:
140 struct acpi_madt_local_sapic *p =
141 (struct acpi_madt_local_sapic *)header;
142 printk(KERN_INFO PREFIX
143 "LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n",
144 p->processor_id, p->id, p->eid,
145 (p->lapic_flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
147 break;
149 case ACPI_MADT_TYPE_INTERRUPT_SOURCE:
151 struct acpi_madt_interrupt_source *p =
152 (struct acpi_madt_interrupt_source *)header;
153 printk(KERN_INFO PREFIX
154 "PLAT_INT_SRC (%s %s type[0x%x] id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n",
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,
158 p->global_irq);
160 break;
162 default:
163 printk(KERN_WARNING PREFIX
164 "Found unsupported MADT entry (type = 0x%x)\n",
165 header->type);
166 break;
171 int __init
172 acpi_table_parse_madt_family(char *id,
173 unsigned long madt_size,
174 int entry_id,
175 acpi_madt_entry_handler handler,
176 unsigned int max_entries)
178 struct acpi_table_header *madt = NULL;
179 struct acpi_subtable_header *entry;
180 unsigned int count = 0;
181 unsigned long madt_end;
183 if (!handler)
184 return -EINVAL;
186 /* Locate the MADT (if exists). There should only be one. */
187 acpi_get_table(id, 0, &madt);
189 if (!madt) {
190 printk(KERN_WARNING PREFIX "%4.4s not present\n", id);
191 return -ENODEV;
194 madt_end = (unsigned long)madt + madt->length;
196 /* Parse all entries looking for a match. */
198 entry = (struct acpi_subtable_header *)
199 ((unsigned long)madt + madt_size);
201 while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
202 madt_end) {
203 if (entry->type == entry_id
204 && (!max_entries || count++ < max_entries))
205 if (handler(entry, madt_end))
206 return -EINVAL;
208 entry = (struct acpi_subtable_header *)
209 ((unsigned long)entry + entry->length);
211 if (max_entries && count > max_entries) {
212 printk(KERN_WARNING PREFIX "[%4.4s:0x%02x] ignored %i entries of "
213 "%i found\n", id, entry_id, count - max_entries, count);
216 return count;
219 int __init
220 acpi_table_parse_madt(enum acpi_madt_type id,
221 acpi_madt_entry_handler handler, unsigned int max_entries)
223 return acpi_table_parse_madt_family(ACPI_SIG_MADT,
224 sizeof(struct acpi_table_madt), id,
225 handler, max_entries);
228 int __init acpi_table_parse(char *id, acpi_table_handler handler)
230 struct acpi_table_header *table = NULL;
231 if (!handler)
232 return -EINVAL;
234 acpi_get_table(id, 0, &table);
235 if (table) {
236 handler(table);
237 return 1;
238 } else
239 return 0;
243 * acpi_table_init()
245 * find RSDP, find and checksum SDT/XSDT.
246 * checksum all tables, print SDT/XSDT
248 * result: sdt_entry[] is initialized
252 int __init acpi_table_init(void)
254 acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
255 return 0;