X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Facpi%2Ftables.c;h=f336bca7c4503ec1d03d7741ee8185afae942381;hb=7bae2c4898dd6e1e4a8276e5c428c55a7ff01bdf;hp=45bd17313c4a8a9cc92a274cc5fbaa88cdee328e;hpb=cd354f1ae75e6466a7e31b727faede57a1f89ca5;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 45bd173..f336bca7 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -42,7 +42,9 @@ 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) +static int acpi_apic_instance __initdata; + +void acpi_table_print_madt_entry(struct acpi_subtable_header *header) { if (!header) return; @@ -60,6 +62,18 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header * header) } break; + case ACPI_MADT_TYPE_LOCAL_X2APIC: + { + struct acpi_madt_local_x2apic *p = + (struct acpi_madt_local_x2apic *)header; + printk(KERN_INFO PREFIX + "X2APIC (apic_id[0x%02x] uid[0x%02x] %s)\n", + p->local_apic_id, p->uid, + (p->lapic_flags & ACPI_MADT_ENABLED) ? + "enabled" : "disabled"); + } + break; + case ACPI_MADT_TYPE_IO_APIC: { struct acpi_madt_io_apic *p = @@ -114,6 +128,24 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header * header) } break; + case ACPI_MADT_TYPE_LOCAL_X2APIC_NMI: + { + u16 polarity, trigger; + struct acpi_madt_local_x2apic_nmi *p = + (struct acpi_madt_local_x2apic_nmi *)header; + + polarity = p->inti_flags & ACPI_MADT_POLARITY_MASK; + trigger = (p->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2; + + printk(KERN_INFO PREFIX + "X2APIC_NMI (uid[0x%02x] %s %s lint[0x%x])\n", + p->uid, + mps_inti_flags_polarity[polarity], + mps_inti_flags_trigger[trigger], + p->lint); + } + break; + case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: { struct acpi_madt_local_apic_override *p = @@ -169,41 +201,49 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header * header) int __init -acpi_table_parse_madt_family(char *id, - unsigned long madt_size, +acpi_table_parse_entries(char *id, + unsigned long table_size, int entry_id, - acpi_madt_entry_handler handler, + acpi_table_entry_handler handler, unsigned int max_entries) { - struct acpi_table_header *madt = NULL; + struct acpi_table_header *table_header = NULL; struct acpi_subtable_header *entry; unsigned int count = 0; - unsigned long madt_end; + unsigned long table_end; + acpi_size tbl_size; + + if (acpi_disabled) + return -ENODEV; if (!handler) return -EINVAL; - /* Locate the MADT (if exists). There should only be one. */ - acpi_get_table(id, 0, &madt); + if (strncmp(id, ACPI_SIG_MADT, 4) == 0) + acpi_get_table_with_size(id, acpi_apic_instance, &table_header, &tbl_size); + else + acpi_get_table_with_size(id, 0, &table_header, &tbl_size); - if (!madt) { + if (!table_header) { printk(KERN_WARNING PREFIX "%4.4s not present\n", id); return -ENODEV; } - madt_end = (unsigned long)madt + madt->length; + table_end = (unsigned long)table_header + table_header->length; /* Parse all entries looking for a match. */ entry = (struct acpi_subtable_header *) - ((unsigned long)madt + madt_size); + ((unsigned long)table_header + table_size); while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) < - madt_end) { + table_end) { if (entry->type == entry_id && (!max_entries || count++ < max_entries)) - if (handler(entry, madt_end)) + if (handler(entry, table_end)) { + early_acpi_os_unmap_memory((char *)table_header, tbl_size); return -EINVAL; + } entry = (struct acpi_subtable_header *) ((unsigned long)entry + entry->length); @@ -213,30 +253,77 @@ acpi_table_parse_madt_family(char *id, "%i found\n", id, entry_id, count - max_entries, count); } + early_acpi_os_unmap_memory((char *)table_header, tbl_size); return count; } int __init acpi_table_parse_madt(enum acpi_madt_type id, - acpi_madt_entry_handler handler, unsigned int max_entries) + acpi_table_entry_handler handler, unsigned int max_entries) { - return acpi_table_parse_madt_family(ACPI_SIG_MADT, + return acpi_table_parse_entries(ACPI_SIG_MADT, sizeof(struct acpi_table_madt), id, handler, max_entries); } +/** + * acpi_table_parse - find table with @id, run @handler on it + * + * @id: table id to find + * @handler: handler to run + * + * Scan the ACPI System Descriptor Table (STD) for a table matching @id, + * run @handler on it. Return 0 if table found, return on if not. + */ int __init acpi_table_parse(char *id, acpi_table_handler handler) { struct acpi_table_header *table = NULL; + acpi_size tbl_size; + + if (acpi_disabled) + return -ENODEV; + if (!handler) return -EINVAL; - acpi_get_table(id, 0, &table); + if (strncmp(id, ACPI_SIG_MADT, 4) == 0) + acpi_get_table_with_size(id, acpi_apic_instance, &table, &tbl_size); + else + acpi_get_table_with_size(id, 0, &table, &tbl_size); + if (table) { handler(table); + early_acpi_os_unmap_memory(table, tbl_size); + return 0; + } else return 1; +} + +/* + * The BIOS is supposed to supply a single APIC/MADT, + * but some report two. Provide a knob to use either. + * (don't you wish instance 0 and 1 were not the same?) + */ +static void __init check_multiple_madt(void) +{ + struct acpi_table_header *table = NULL; + acpi_size tbl_size; + + acpi_get_table_with_size(ACPI_SIG_MADT, 2, &table, &tbl_size); + if (table) { + printk(KERN_WARNING PREFIX + "BIOS bug: multiple APIC/MADT found," + " using %d\n", acpi_apic_instance); + printk(KERN_WARNING PREFIX + "If \"acpi_apic_instance=%d\" works better, " + "notify linux-acpi@vger.kernel.org\n", + acpi_apic_instance ? 0 : 2); + early_acpi_os_unmap_memory(table, tbl_size); + } else - return 0; + acpi_apic_instance = 0; + + return; } /* @@ -248,9 +335,29 @@ int __init acpi_table_parse(char *id, acpi_table_handler handler) * result: sdt_entry[] is initialized */ - int __init acpi_table_init(void) { - acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0); + acpi_status status; + + status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0); + if (ACPI_FAILURE(status)) + return 1; + + check_multiple_madt(); + return 0; +} + +static int __init acpi_parse_apic_instance(char *str) +{ + if (!str) + return -EINVAL; + + acpi_apic_instance = simple_strtoul(str, NULL, 0); + + printk(KERN_NOTICE PREFIX "Shall use APIC/MADT table %d\n", + acpi_apic_instance); + return 0; } + +early_param("acpi_apic_instance", acpi_parse_apic_instance);