*
*/
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/string.h>
#include <linux/types.h>
#define PREFIX "ACPI: "
-#define ACPI_MAX_TABLES 256
-
-static char *acpi_table_signatures[ACPI_TABLE_COUNT] = {
- [ACPI_TABLE_UNKNOWN] = "????",
- [ACPI_APIC] = "APIC",
- [ACPI_BOOT] = "BOOT",
- [ACPI_DBGP] = "DBGP",
- [ACPI_DSDT] = "DSDT",
- [ACPI_ECDT] = "ECDT",
- [ACPI_ETDT] = "ETDT",
- [ACPI_FADT] = "FACP",
- [ACPI_FACS] = "FACS",
- [ACPI_OEMX] = "OEM",
- [ACPI_PSDT] = "PSDT",
- [ACPI_SBST] = "SBST",
- [ACPI_SLIT] = "SLIT",
- [ACPI_SPCR] = "SPCR",
- [ACPI_SRAT] = "SRAT",
- [ACPI_SSDT] = "SSDT",
- [ACPI_SPMI] = "SPMI",
- [ACPI_HPET] = "HPET",
- [ACPI_MCFG] = "MCFG",
-};
+#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" };
-/* System Description Table (RSDT/XSDT) */
-struct acpi_table_sdt {
- unsigned long pa;
- enum acpi_table_id id;
- unsigned long size;
-} __attribute__ ((packed));
+static struct acpi_table_desc initial_tables[ACPI_MAX_TABLES] __initdata;
-static unsigned long sdt_pa; /* Physical Address */
-static unsigned long sdt_count; /* Table count */
+static int acpi_apic_instance __initdata;
-static struct acpi_table_sdt sdt_entry[ACPI_MAX_TABLES];
-
-void
-acpi_table_print (
- struct acpi_table_header *header,
- unsigned long phys_addr)
-{
- char *name = NULL;
-
- if (!header)
- return;
-
- /* Some table signatures aren't good table names */
-
- if (!strncmp((char *) &header->signature,
- acpi_table_signatures[ACPI_APIC],
- sizeof(header->signature))) {
- name = "MADT";
- }
- else if (!strncmp((char *) &header->signature,
- acpi_table_signatures[ACPI_FADT],
- sizeof(header->signature))) {
- name = "FADT";
- }
- else
- name = header->signature;
-
- printk(KERN_DEBUG PREFIX "%.4s (v%3.3d %6.6s %8.8s 0x%08x %.4s 0x%08x) @ 0x%p\n",
- name, header->revision, header->oem_id,
- header->oem_table_id, header->oem_revision,
- header->asl_compiler_id, header->asl_compiler_revision,
- (void *) phys_addr);
-}
-
-
-void
-acpi_table_print_madt_entry (
- acpi_table_entry_header *header)
+void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
{
if (!header)
return;
switch (header->type) {
- case ACPI_MADT_LAPIC:
- {
- struct acpi_table_lapic *p =
- (struct acpi_table_lapic*) header;
- printk(KERN_INFO PREFIX "LAPIC (acpi_id[0x%02x] lapic_id[0x%02x] %s)\n",
- p->acpi_id, p->id, p->flags.enabled?"enabled":"disabled");
- }
+ 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_IOAPIC:
- {
- struct acpi_table_ioapic *p =
- (struct acpi_table_ioapic*) header;
- printk(KERN_INFO PREFIX "IOAPIC (id[0x%02x] address[0x%08x] gsi_base[%d])\n",
- p->id, p->address, p->global_irq_base);
- }
+ 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_INT_SRC_OVR:
- {
- struct acpi_table_int_src_ovr *p =
- (struct acpi_table_int_src_ovr*) header;
- printk(KERN_INFO PREFIX "INT_SRC_OVR (bus %d bus_irq %d global_irq %d %s %s)\n",
- p->bus, p->bus_irq, p->global_irq,
- mps_inti_flags_polarity[p->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger]);
- if(p->flags.reserved)
- printk(KERN_INFO PREFIX "INT_SRC_OVR unexpected reserved flags: 0x%x\n",
- p->flags.reserved);
+ 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_NMI_SRC:
- {
- struct acpi_table_nmi_src *p =
- (struct acpi_table_nmi_src*) header;
- printk(KERN_INFO PREFIX "NMI_SRC (%s %s global_irq %d)\n",
- mps_inti_flags_polarity[p->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger], p->global_irq);
- }
+ 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_LAPIC_NMI:
- {
- struct acpi_table_lapic_nmi *p =
- (struct acpi_table_lapic_nmi*) header;
- printk(KERN_INFO PREFIX "LAPIC_NMI (acpi_id[0x%02x] %s %s lint[0x%x])\n",
- p->acpi_id,
- mps_inti_flags_polarity[p->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger], p->lint);
- }
+ 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_LAPIC_ADDR_OVR:
- {
- struct acpi_table_lapic_addr_ovr *p =
- (struct acpi_table_lapic_addr_ovr*) header;
- printk(KERN_INFO PREFIX "LAPIC_ADDR_OVR (address[%p])\n",
- (void *) (unsigned long) p->address);
- }
+ 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_IOSAPIC:
- {
- struct acpi_table_iosapic *p =
- (struct acpi_table_iosapic*) 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);
- }
+ 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_LSAPIC:
- {
- struct acpi_table_lsapic *p =
- (struct acpi_table_lsapic*) header;
- printk(KERN_INFO PREFIX "LSAPIC (acpi_id[0x%02x] lsapic_id[0x%02x] lsapic_eid[0x%02x] %s)\n",
- p->acpi_id, p->id, p->eid, p->flags.enabled?"enabled":"disabled");
- }
+ 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_PLAT_INT_SRC:
- {
- struct acpi_table_plat_int_src *p =
- (struct acpi_table_plat_int_src*) 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->flags.polarity],
- mps_inti_flags_trigger[p->flags.trigger],
- p->type, p->id, p->eid, p->iosapic_vector, p->global_irq);
- }
+ 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);
+ printk(KERN_WARNING PREFIX
+ "Found unsupported MADT entry (type = 0x%x)\n",
+ header->type);
break;
}
}
-static int
-acpi_table_compute_checksum (
- void *table_pointer,
- unsigned long length)
-{
- u8 *p = (u8 *) table_pointer;
- unsigned long remains = length;
- unsigned long sum = 0;
-
- if (!p || !length)
- return -EINVAL;
-
- while (remains--)
- sum += *p++;
-
- return (sum & 0xFF);
-}
-
-/*
- * acpi_get_table_header_early()
- * for acpi_blacklisted(), acpi_table_get_sdt()
- */
int __init
-acpi_get_table_header_early (
- enum acpi_table_id id,
- struct acpi_table_header **header)
+acpi_table_parse_entries(char *id,
+ unsigned long table_size,
+ int entry_id,
+ acpi_table_entry_handler handler,
+ unsigned int max_entries)
{
- unsigned int i;
- enum acpi_table_id temp_id;
+ struct acpi_table_header *table_header = NULL;
+ struct acpi_subtable_header *entry;
+ unsigned int count = 0;
+ unsigned long table_end;
+ acpi_size tbl_size;
- /* DSDT is different from the rest */
- if (id == ACPI_DSDT)
- temp_id = ACPI_FADT;
- else
- temp_id = id;
-
- /* Locate the table. */
-
- for (i = 0; i < sdt_count; i++) {
- if (sdt_entry[i].id != temp_id)
- continue;
- *header = (void *)
- __acpi_map_table(sdt_entry[i].pa, sdt_entry[i].size);
- if (!*header) {
- printk(KERN_WARNING PREFIX "Unable to map %s\n",
- acpi_table_signatures[temp_id]);
- return -ENODEV;
- }
- break;
- }
-
- if (!*header) {
- printk(KERN_WARNING PREFIX "%s not present\n",
- acpi_table_signatures[id]);
+ if (acpi_disabled && !acpi_ht)
return -ENODEV;
- }
-
- /* Map the DSDT header via the pointer in the FADT */
- if (id == ACPI_DSDT) {
- struct fadt_descriptor_rev2 *fadt = (struct fadt_descriptor_rev2 *) *header;
-
- if (fadt->revision == 3 && fadt->Xdsdt) {
- *header = (void *) __acpi_map_table(fadt->Xdsdt,
- sizeof(struct acpi_table_header));
- } else if (fadt->V1_dsdt) {
- *header = (void *) __acpi_map_table(fadt->V1_dsdt,
- sizeof(struct acpi_table_header));
- } else
- *header = NULL;
-
- if (!*header) {
- printk(KERN_WARNING PREFIX "Unable to map DSDT\n");
- return -ENODEV;
- }
- }
-
- return 0;
-}
-
-
-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 *madt = NULL;
- acpi_table_entry_header *entry;
- unsigned int count = 0;
- unsigned long madt_end;
- unsigned int i;
if (!handler)
return -EINVAL;
- /* Locate the MADT (if exists). There should only be one. */
-
- for (i = 0; i < sdt_count; i++) {
- if (sdt_entry[i].id != id)
- continue;
- madt = (void *)
- __acpi_map_table(sdt_entry[i].pa, sdt_entry[i].size);
- if (!madt) {
- printk(KERN_WARNING PREFIX "Unable to map %s\n",
- acpi_table_signatures[id]);
- return -ENODEV;
- }
- break;
- }
+ 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) {
- printk(KERN_WARNING PREFIX "%s not present\n",
- acpi_table_signatures[id]);
+ if (!table_header) {
+ printk(KERN_WARNING PREFIX "%4.4s not present\n", id);
return -ENODEV;
}
- madt_end = (unsigned long) madt + sdt_entry[i].size;
+ table_end = (unsigned long)table_header + table_header->length;
/* Parse all entries looking for a match. */
- entry = (acpi_table_entry_header *)
- ((unsigned long) madt + madt_size);
+ entry = (struct acpi_subtable_header *)
+ ((unsigned long)table_header + table_size);
- while (((unsigned long) entry) + sizeof(acpi_table_entry_header) < madt_end) {
- if (entry->type == entry_id &&
- (!max_entries || count++ < max_entries))
- if (handler(entry, madt_end))
+ while (((unsigned long)entry) + sizeof(struct acpi_subtable_header) <
+ table_end) {
+ if (entry->type == entry_id
+ && (!max_entries || count++ < max_entries))
+ if (handler(entry, table_end)) {
+ early_acpi_os_unmap_memory((char *)table_header, tbl_size);
return -EINVAL;
+ }
- entry = (acpi_table_entry_header *)
- ((unsigned long) entry + entry->length);
+ entry = (struct acpi_subtable_header *)
+ ((unsigned long)entry + entry->length);
}
if (max_entries && count > max_entries) {
- printk(KERN_WARNING PREFIX "[%s:0x%02x] ignored %i entries of "
- "%i found\n", acpi_table_signatures[id], entry_id,
- count - max_entries, count);
+ printk(KERN_WARNING PREFIX "[%4.4s:0x%02x] ignored %i entries of "
+ "%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_entry_id id,
- acpi_madt_entry_handler handler,
- unsigned int max_entries)
+acpi_table_parse_madt(enum acpi_madt_type id,
+ acpi_table_entry_handler handler, unsigned int max_entries)
{
- return acpi_table_parse_madt_family(ACPI_APIC, sizeof(struct acpi_table_madt),
- id, handler, max_entries);
+ return acpi_table_parse_entries(ACPI_SIG_MADT,
+ sizeof(struct acpi_table_madt), id,
+ handler, max_entries);
}
-
-int __init
-acpi_table_parse (
- enum acpi_table_id id,
- acpi_table_handler handler)
+/**
+ * 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)
{
- int count = 0;
- unsigned int i = 0;
+ struct acpi_table_header *table = NULL;
+ acpi_size tbl_size;
+
+ if (acpi_disabled && !acpi_ht)
+ return -ENODEV;
if (!handler)
return -EINVAL;
- for (i = 0; i < sdt_count; i++) {
- if (sdt_entry[i].id != id)
- continue;
- count++;
- if (count == 1)
- handler(sdt_entry[i].pa, sdt_entry[i].size);
-
- else
- printk(KERN_WARNING PREFIX "%d duplicate %s table ignored.\n",
- count, acpi_table_signatures[id]);
- }
-
- return count;
+ 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;
}
-
-static int __init
-acpi_table_get_sdt (
- struct acpi_table_rsdp *rsdp)
+/*
+ * 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 *header = NULL;
- unsigned int i, id = 0;
-
- if (!rsdp)
- return -EINVAL;
-
- /* First check XSDT (but only on ACPI 2.0-compatible systems) */
-
- if ((rsdp->revision >= 2) &&
- (((struct acpi20_table_rsdp*)rsdp)->xsdt_address)) {
-
- struct acpi_table_xsdt *mapped_xsdt = NULL;
-
- sdt_pa = ((struct acpi20_table_rsdp*)rsdp)->xsdt_address;
-
- /* map in just the header */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_pa, sizeof(struct acpi_table_header));
-
- if (!header) {
- printk(KERN_WARNING PREFIX "Unable to map XSDT header\n");
- return -ENODEV;
- }
-
- /* remap in the entire table before processing */
- mapped_xsdt = (struct acpi_table_xsdt *)
- __acpi_map_table(sdt_pa, header->length);
- if (!mapped_xsdt) {
- printk(KERN_WARNING PREFIX "Unable to map XSDT\n");
- return -ENODEV;
- }
- header = &mapped_xsdt->header;
-
- if (strncmp(header->signature, "XSDT", 4)) {
- printk(KERN_WARNING PREFIX "XSDT signature incorrect\n");
- return -ENODEV;
- }
-
- if (acpi_table_compute_checksum(header, header->length)) {
- printk(KERN_WARNING PREFIX "Invalid XSDT checksum\n");
- return -ENODEV;
- }
-
- sdt_count = (header->length - sizeof(struct acpi_table_header)) >> 3;
- if (sdt_count > ACPI_MAX_TABLES) {
- printk(KERN_WARNING PREFIX "Truncated %lu XSDT entries\n",
- (sdt_count - ACPI_MAX_TABLES));
- sdt_count = ACPI_MAX_TABLES;
- }
-
- for (i = 0; i < sdt_count; i++)
- sdt_entry[i].pa = (unsigned long) mapped_xsdt->entry[i];
- }
-
- /* Then check RSDT */
-
- else if (rsdp->rsdt_address) {
-
- struct acpi_table_rsdt *mapped_rsdt = NULL;
-
- sdt_pa = rsdp->rsdt_address;
-
- /* map in just the header */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_pa, sizeof(struct acpi_table_header));
- if (!header) {
- printk(KERN_WARNING PREFIX "Unable to map RSDT header\n");
- return -ENODEV;
- }
-
- /* remap in the entire table before processing */
- mapped_rsdt = (struct acpi_table_rsdt *)
- __acpi_map_table(sdt_pa, header->length);
- if (!mapped_rsdt) {
- printk(KERN_WARNING PREFIX "Unable to map RSDT\n");
- return -ENODEV;
- }
- header = &mapped_rsdt->header;
-
- if (strncmp(header->signature, "RSDT", 4)) {
- printk(KERN_WARNING PREFIX "RSDT signature incorrect\n");
- return -ENODEV;
- }
-
- if (acpi_table_compute_checksum(header, header->length)) {
- printk(KERN_WARNING PREFIX "Invalid RSDT checksum\n");
- return -ENODEV;
- }
-
- sdt_count = (header->length - sizeof(struct acpi_table_header)) >> 2;
- if (sdt_count > ACPI_MAX_TABLES) {
- printk(KERN_WARNING PREFIX "Truncated %lu RSDT entries\n",
- (sdt_count - ACPI_MAX_TABLES));
- sdt_count = ACPI_MAX_TABLES;
- }
-
- for (i = 0; i < sdt_count; i++)
- sdt_entry[i].pa = (unsigned long) mapped_rsdt->entry[i];
- }
-
- else {
- printk(KERN_WARNING PREFIX "No System Description Table (RSDT/XSDT) specified in RSDP\n");
- return -ENODEV;
- }
-
- acpi_table_print(header, sdt_pa);
-
- for (i = 0; i < sdt_count; i++) {
-
- /* map in just the header */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_entry[i].pa,
- sizeof(struct acpi_table_header));
- if (!header)
- continue;
-
- /* remap in the entire table before processing */
- header = (struct acpi_table_header *)
- __acpi_map_table(sdt_entry[i].pa,
- header->length);
- if (!header)
- continue;
-
- acpi_table_print(header, sdt_entry[i].pa);
-
- if (acpi_table_compute_checksum(header, header->length)) {
- printk(KERN_WARNING " >>> ERROR: Invalid checksum\n");
- continue;
- }
-
- sdt_entry[i].size = header->length;
-
- for (id = 0; id < ACPI_TABLE_COUNT; id++) {
- if (!strncmp((char *) &header->signature,
- acpi_table_signatures[id],
- sizeof(header->signature))) {
- sdt_entry[i].id = id;
- }
- }
- }
-
- /*
- * The DSDT is *not* in the RSDT (why not? no idea.) but we want
- * to print its info, because this is what people usually blacklist
- * against. Unfortunately, we don't know the phys_addr, so just
- * print 0. Maybe no one will notice.
- */
- if(!acpi_get_table_header_early(ACPI_DSDT, &header))
- acpi_table_print(header, 0);
-
- return 0;
+ 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
+ acpi_apic_instance = 0;
+
+ return;
}
/*
*
* find RSDP, find and checksum SDT/XSDT.
* checksum all tables, print SDT/XSDT
- *
+ *
* result: sdt_entry[] is initialized
*/
-int __init
-acpi_table_init (void)
+int __init acpi_table_init(void)
{
- struct acpi_table_rsdp *rsdp = NULL;
- unsigned long rsdp_phys = 0;
- int result = 0;
-
- /* Locate and map the Root System Description Table (RSDP) */
-
- rsdp_phys = acpi_find_rsdp();
- if (!rsdp_phys) {
- printk(KERN_ERR PREFIX "Unable to locate RSDP\n");
- return -ENODEV;
- }
-
- rsdp = (struct acpi_table_rsdp *) __va(rsdp_phys);
- if (!rsdp) {
- printk(KERN_WARNING PREFIX "Unable to map RSDP\n");
- return -ENODEV;
- }
+ acpi_status status;
- printk(KERN_DEBUG PREFIX "RSDP (v%3.3d %6.6s ) @ 0x%p\n",
- rsdp->revision, rsdp->oem_id, (void *) rsdp_phys);
+ status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
+ if (ACPI_FAILURE(status))
+ return 1;
- if (rsdp->revision < 2)
- result = acpi_table_compute_checksum(rsdp, sizeof(struct acpi_table_rsdp));
- else
- result = acpi_table_compute_checksum(rsdp, ((struct acpi20_table_rsdp *)rsdp)->length);
+ check_multiple_madt();
+ return 0;
+}
- if (result) {
- printk(KERN_WARNING " >>> ERROR: Invalid checksum\n");
- return -ENODEV;
- }
+static int __init acpi_parse_apic_instance(char *str)
+{
+ if (!str)
+ return -EINVAL;
- /* Locate and map the System Description table (RSDT/XSDT) */
+ acpi_apic_instance = simple_strtoul(str, NULL, 0);
- if (acpi_table_get_sdt(rsdp))
- return -ENODEV;
+ 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);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff