summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/x86/kernel/acpi/boot.c63
-rw-r--r--arch/x86/mm/srat_64.c30
-rw-r--r--drivers/acpi/numa.c46
-rw-r--r--drivers/acpi/processor_core.c26
-rw-r--r--drivers/acpi/tables.c30
-rw-r--r--include/acpi/actbl1.h6
-rw-r--r--include/linux/acpi.h1
7 files changed, 194 insertions, 8 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 7678f10c4568..565e70c7ca93 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -260,6 +260,35 @@ static void __cpuinit acpi_register_lapic(int id, u8 enabled)
}
static int __init
+acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
+{
+ struct acpi_madt_local_x2apic *processor = NULL;
+
+ processor = (struct acpi_madt_local_x2apic *)header;
+
+ if (BAD_MADT_ENTRY(processor, end))
+ return -EINVAL;
+
+ acpi_table_print_madt_entry(header);
+
+#ifdef CONFIG_X86_X2APIC
+ /*
+ * We need to register disabled CPU as well to permit
+ * counting disabled CPUs. This allows us to size
+ * cpus_possible_map more accurately, to permit
+ * to not preallocating memory for all NR_CPUS
+ * when we use CPU hotplug.
+ */
+ acpi_register_lapic(processor->local_apic_id, /* APIC ID */
+ processor->lapic_flags & ACPI_MADT_ENABLED);
+#else
+ printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
+#endif
+
+ return 0;
+}
+
+static int __init
acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
{
struct acpi_madt_local_apic *processor = NULL;
@@ -319,6 +348,25 @@ acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header,
}
static int __init
+acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_madt_local_x2apic_nmi *x2apic_nmi = NULL;
+
+ x2apic_nmi = (struct acpi_madt_local_x2apic_nmi *)header;
+
+ if (BAD_MADT_ENTRY(x2apic_nmi, end))
+ return -EINVAL;
+
+ acpi_table_print_madt_entry(header);
+
+ if (x2apic_nmi->lint != 1)
+ printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
+
+ return 0;
+}
+
+static int __init
acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end)
{
struct acpi_madt_local_apic_nmi *lapic_nmi = NULL;
@@ -823,6 +871,7 @@ static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
static int __init acpi_parse_madt_lapic_entries(void)
{
int count;
+ int x2count = 0;
if (!cpu_has_apic)
return -ENODEV;
@@ -846,22 +895,28 @@ static int __init acpi_parse_madt_lapic_entries(void)
count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
acpi_parse_sapic, MAX_APICS);
- if (!count)
+ if (!count) {
+ x2count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC,
+ acpi_parse_x2apic, MAX_APICS);
count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC,
acpi_parse_lapic, MAX_APICS);
- if (!count) {
+ }
+ if (!count && !x2count) {
printk(KERN_ERR PREFIX "No LAPIC entries present\n");
/* TBD: Cleanup to allow fallback to MPS */
return -ENODEV;
- } else if (count < 0) {
+ } else if (count < 0 || x2count < 0) {
printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
+ x2count =
+ acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_X2APIC_NMI,
+ acpi_parse_x2apic_nmi, 0);
count =
acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
- if (count < 0) {
+ if (count < 0 || x2count < 0) {
printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index 09737c8af074..13d56f5b1349 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -115,6 +115,36 @@ void __init acpi_numa_slit_init(struct acpi_table_slit *slit)
reserve_early(phys, phys + length, "ACPI SLIT");
}
+/* Callback for Proximity Domain -> x2APIC mapping */
+void __init
+acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
+{
+ int pxm, node;
+ int apic_id;
+
+ if (srat_disabled())
+ return;
+ if (pa->header.length < sizeof(struct acpi_srat_x2apic_cpu_affinity)) {
+ bad_srat();
+ return;
+ }
+ if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0)
+ return;
+ pxm = pa->proximity_domain;
+ node = setup_node(pxm);
+ if (node < 0) {
+ printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm);
+ bad_srat();
+ return;
+ }
+
+ apic_id = pa->apic_id;
+ apicid_to_node[apic_id] = node;
+ acpi_numa = 1;
+ printk(KERN_INFO "SRAT: PXM %u -> APIC %u -> Node %u\n",
+ pxm, apic_id, node);
+}
+
/* Callback for Proximity Domain -> LAPIC mapping */
void __init
acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 3a0d8ef25c75..d440ccd27d91 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -131,6 +131,21 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
#endif /* ACPI_DEBUG_OUTPUT */
break;
+ case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY:
+#ifdef ACPI_DEBUG_OUTPUT
+ {
+ struct acpi_srat_x2apic_cpu_affinity *p =
+ (struct acpi_srat_x2apic_cpu_affinity *)header;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "SRAT Processor (x2apicid[0x%08x]) in"
+ " proximity domain %d %s\n",
+ p->apic_id,
+ p->proximity_domain,
+ (p->flags & ACPI_SRAT_CPU_ENABLED) ?
+ "enabled" : "disabled"));
+ }
+#endif /* ACPI_DEBUG_OUTPUT */
+ break;
default:
printk(KERN_WARNING PREFIX
"Found unsupported SRAT entry (type = 0x%x)\n",
@@ -180,8 +195,35 @@ static int __init acpi_parse_slit(struct acpi_table_header *table)
return 0;
}
+void __init __attribute__ ((weak))
+acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
+{
+ printk(KERN_WARNING PREFIX
+ "Found unsupported x2apic [0x%08x] SRAT entry\n", pa->apic_id);
+ return;
+}
+
+
+static int __init
+acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_srat_x2apic_cpu_affinity *processor_affinity;
+
+ processor_affinity = (struct acpi_srat_x2apic_cpu_affinity *)header;
+ if (!processor_affinity)
+ return -EINVAL;
+
+ acpi_table_print_srat_entry(header);
+
+ /* let architecture-dependent part to do it */
+ acpi_numa_x2apic_affinity_init(processor_affinity);
+
+ return 0;
+}
+
static int __init
-acpi_parse_processor_affinity(struct acpi_subtable_header * header,
+acpi_parse_processor_affinity(struct acpi_subtable_header *header,
const unsigned long end)
{
struct acpi_srat_cpu_affinity *processor_affinity;
@@ -241,6 +283,8 @@ int __init acpi_numa_init(void)
{
/* SRAT: Static Resource Affinity Table */
if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
+ acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY,
+ acpi_parse_x2apic_affinity, NR_CPUS);
acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
acpi_parse_processor_affinity, NR_CPUS);
acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 0cc2fd31e376..775324e34ffa 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -427,6 +427,29 @@ static int map_lapic_id(struct acpi_subtable_header *entry,
return 0;
}
+static int map_x2apic_id(struct acpi_subtable_header *entry,
+ int device_declaration, u32 acpi_id, int *apic_id)
+{
+ struct acpi_madt_local_x2apic *apic =
+ (struct acpi_madt_local_x2apic *)entry;
+ u32 tmp = apic->local_apic_id;
+
+ /* Only check enabled APICs*/
+ if (!(apic->lapic_flags & ACPI_MADT_ENABLED))
+ return 0;
+
+ /* Device statement declaration type */
+ if (device_declaration) {
+ if (apic->uid == acpi_id)
+ goto found;
+ }
+
+ return 0;
+found:
+ *apic_id = tmp;
+ return 1;
+}
+
static int map_lsapic_id(struct acpi_subtable_header *entry,
int device_declaration, u32 acpi_id, int *apic_id)
{
@@ -476,6 +499,9 @@ static int map_madt_entry(int type, u32 acpi_id)
if (header->type == ACPI_MADT_TYPE_LOCAL_APIC) {
if (map_lapic_id(header, acpi_id, &apic_id))
break;
+ } else if (header->type == ACPI_MADT_TYPE_LOCAL_X2APIC) {
+ if (map_x2apic_id(header, type, acpi_id, &apic_id))
+ break;
} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
if (map_lsapic_id(header, type, acpi_id, &apic_id))
break;
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index a8852952fac4..991c006a301b 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -62,6 +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 =
@@ -116,6 +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 =
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 18963b968114..59ade0752473 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -1016,9 +1016,9 @@ struct acpi_madt_interrupt_source {
struct acpi_madt_local_x2apic {
struct acpi_subtable_header header;
u16 reserved; /* Reserved - must be zero */
- u32 local_apic_id; /* Processor X2_APIC ID */
+ u32 local_apic_id; /* Processor x2APIC ID */
u32 lapic_flags;
- u32 uid; /* Extended X2_APIC processor ID */
+ u32 uid; /* ACPI processor UID */
};
/* 10: Local X2APIC NMI (07/2008) */
@@ -1026,7 +1026,7 @@ struct acpi_madt_local_x2apic {
struct acpi_madt_local_x2apic_nmi {
struct acpi_subtable_header header;
u16 inti_flags;
- u32 uid; /* Processor X2_APIC ID */
+ u32 uid; /* ACPI processor UID */
u8 lint; /* LINTn to which NMI is connected */
u8 reserved[3];
};
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 6fce2fc2d124..a6989e517549 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -96,6 +96,7 @@ void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
/* the following four functions are architecture-dependent */
void acpi_numa_slit_init (struct acpi_table_slit *slit);
void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
+void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
void acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
void acpi_numa_arch_fixup(void);
OpenPOWER on IntegriCloud