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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] ACPI: add support for x2APIC ACPI extensions
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1279284738 -3600
# Node ID fedab6367c9a0141d49853c77a23d6642ba70ff6
# Parent 1f7c2418e58c7d1d5650ea211016b30114de48f2
ACPI: add support for x2APIC ACPI extensions
All logical processors with APIC ID values of 255 and greater will
have their APIC reported through Processor X2APIC structure (type-9
entry type) and all logical processors with APIC ID less than 255 will
have their APIC reported through legacy Processor Local APIC (type-0
entry type) only. This is the same case even for NMI structure
reporting.
The Processor X2APIC Affinity structure provides the association
between the X2APIC ID of a logical processor and the proximity domain
to which the logical processor belongs.
This patch adds 2 new subtables to MADT and one new subtable to SRAT.
This patch also changes x86_acpiid_to_apicid from u8 to u32 for x2APIC
ID, and changes mp_register_lapic to accept 32-bit id. But there are
still some 8-bit apic id hardcode and assumptions in Xen code, it
needs to be fixed in future.
Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
---
xen/arch/x86/acpi/boot.c | 75 ++++++++++++++++++++++++++++++++++++-------
xen/arch/x86/mpparse.c | 2 -
xen/arch/x86/srat.c | 30 +++++++++++++++++
xen/drivers/acpi/numa.c | 44 +++++++++++++++++++++++++
xen/drivers/acpi/tables.c | 30 +++++++++++++++++
xen/include/acpi/actbl1.h | 49 +++++++++++++++++++++++++---
xen/include/asm-x86/acpi.h | 2 -
xen/include/asm-x86/mpspec.h | 2 -
xen/include/xen/acpi.h | 22 ++++++++++++
9 files changed, 237 insertions(+), 19 deletions(-)
diff -r 1f7c2418e58c -r fedab6367c9a xen/arch/x86/acpi/boot.c
--- a/xen/arch/x86/acpi/boot.c Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/arch/x86/acpi/boot.c Fri Jul 16 13:52:18 2010 +0100
@@ -81,7 +81,7 @@ u8 acpi_enable_value, acpi_disable_value
#warning ACPI uses CMPXCHG, i486 and later hardware
#endif
-u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
+u32 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
{[0 ... MAX_MADT_ENTRIES - 1] = 0xff };
EXPORT_SYMBOL(x86_acpiid_to_apicid);
@@ -156,11 +156,11 @@ static int __init acpi_parse_madt(struct
}
static int __init
-acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
-{
- struct acpi_table_lapic *processor = NULL;
-
- processor = (struct acpi_table_lapic *)header;
+acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
+{
+ struct acpi_table_x2apic *processor = NULL;
+
+ processor = (struct acpi_table_x2apic *)header;
if (BAD_MADT_ENTRY(processor, end))
return -EINVAL;
@@ -169,7 +169,7 @@ acpi_parse_lapic(struct acpi_subtable_he
/* Record local apic id only when enabled */
if (processor->flags.enabled)
- x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
+ x86_acpiid_to_apicid[processor->acpi_uid] = processor->id;
/*
* We need to register disabled CPU as well to permit
@@ -178,6 +178,35 @@ acpi_parse_lapic(struct acpi_subtable_he
* to not preallocating memory for all NR_CPUS
* when we use CPU hotplug.
*/
+ mp_register_lapic(processor->id, /* X2APIC ID */
+ processor->flags.enabled); /* Enabled? */
+
+ return 0;
+}
+
+static int __init
+acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
+{
+ struct acpi_table_lapic *processor = NULL;
+
+ processor = (struct acpi_table_lapic *)header;
+
+ if (BAD_MADT_ENTRY(processor, end))
+ return -EINVAL;
+
+ acpi_table_print_madt_entry(header);
+
+ /* Record local apic id only when enabled */
+ if (processor->flags.enabled)
+ x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
+
+ /*
+ * 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.
+ */
mp_register_lapic(processor->id, /* APIC ID */
processor->flags.enabled); /* Enabled? */
@@ -196,6 +225,25 @@ acpi_parse_lapic_addr_ovr(struct acpi_su
return -EINVAL;
acpi_lapic_addr = lapic_addr_ovr->address;
+
+ return 0;
+}
+
+static int __init
+acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_table_x2apic_nmi *x2apic_nmi = NULL;
+
+ x2apic_nmi = (struct acpi_table_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;
}
@@ -465,7 +513,7 @@ static int __init acpi_parse_fadt(struct
*/
static int __init acpi_parse_madt_lapic_entries(void)
{
- int count;
+ int count, x2count;
if (!cpu_has_apic)
return -ENODEV;
@@ -488,11 +536,13 @@ static int __init acpi_parse_madt_lapic_
count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
MAX_APICS);
- if (!count) {
+ x2count = acpi_table_parse_madt(ACPI_MADT_X2APIC, acpi_parse_x2apic,
+ MAX_APICS);
+ 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;
@@ -500,7 +550,10 @@ static int __init acpi_parse_madt_lapic_
count =
acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0);
- if (count < 0) {
+ x2count =
+ acpi_table_parse_madt(ACPI_MADT_X2APIC_NMI,
+ acpi_parse_x2apic_nmi, 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 -r 1f7c2418e58c -r fedab6367c9a xen/arch/x86/mpparse.c
--- a/xen/arch/x86/mpparse.c Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/arch/x86/mpparse.c Fri Jul 16 13:52:18 2010 +0100
@@ -833,7 +833,7 @@ void __init mp_register_lapic_address (
int __devinit mp_register_lapic (
- u8 id,
+ u32 id,
u8 enabled)
{
struct mpc_config_processor processor;
diff -r 1f7c2418e58c -r fedab6367c9a xen/arch/x86/srat.c
--- a/xen/arch/x86/srat.c Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/arch/x86/srat.c Fri Jul 16 13:52:18 2010 +0100
@@ -163,6 +163,36 @@ void __init acpi_numa_slit_init(struct a
{
}
#endif
+
+/* 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
diff -r 1f7c2418e58c -r fedab6367c9a xen/drivers/acpi/numa.c
--- a/xen/drivers/acpi/numa.c Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/drivers/acpi/numa.c Fri Jul 16 13:52:18 2010 +0100
@@ -90,6 +90,21 @@ void __init acpi_table_print_srat_entry(
#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",
@@ -105,6 +120,33 @@ static int __init acpi_parse_slit(struct
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,
const unsigned long end)
@@ -164,6 +206,8 @@ 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_PROCESSOR_AFFINITY,
acpi_parse_processor_affinity,
NR_CPUS);
diff -r 1f7c2418e58c -r fedab6367c9a xen/drivers/acpi/tables.c
--- a/xen/drivers/acpi/tables.c Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/drivers/acpi/tables.c Fri Jul 16 13:52:18 2010 +0100
@@ -60,6 +60,18 @@ void __init acpi_table_print_madt_entry(
"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_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;
@@ -117,6 +129,24 @@ void __init acpi_table_print_madt_entry(
}
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 -r 1f7c2418e58c -r fedab6367c9a xen/include/acpi/actbl1.h
--- a/xen/include/acpi/actbl1.h Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/include/acpi/actbl1.h Fri Jul 16 13:52:18 2010 +0100
@@ -404,7 +404,9 @@ enum acpi_madt_type {
ACPI_MADT_TYPE_IO_SAPIC = 6,
ACPI_MADT_TYPE_LOCAL_SAPIC = 7,
ACPI_MADT_TYPE_INTERRUPT_SOURCE = 8,
- ACPI_MADT_TYPE_RESERVED = 9 /* 9 and greater are reserved */
+ ACPI_MADT_TYPE_LOCAL_X2APIC = 9,
+ ACPI_MADT_TYPE_LOCAL_X2APIC_NMI = 10,
+ ACPI_MADT_TYPE_RESERVED = 11 /* 11 and greater are reserved */
};
/*
@@ -504,6 +506,26 @@ struct acpi_madt_interrupt_source {
/* Flags field above */
#define ACPI_MADT_CPEI_OVERRIDE (1)
+
+/* 9: Processor Local X2APIC (ACPI 4.0) */
+
+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 lapic_flags;
+ u32 uid; /* Extended X2_APIC processor ID */
+};
+
+/* 10: Local X2APIC NMI (ACPI 4.0) */
+
+struct acpi_madt_local_x2apic_nmi {
+ struct acpi_subtable_header header;
+ u16 inti_flags;
+ u32 uid; /* Processor X2_APIC ID */
+ u8 lint; /* LINTn to which NMI is connected */
+ u8 reserved[3];
+};
/*
* Common flags fields for MADT subtables
@@ -646,10 +668,13 @@ enum acpi_srat_type {
enum acpi_srat_type {
ACPI_SRAT_TYPE_CPU_AFFINITY = 0,
ACPI_SRAT_TYPE_MEMORY_AFFINITY = 1,
- ACPI_SRAT_TYPE_RESERVED = 2
+ ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY = 2,
+ ACPI_SRAT_TYPE_RESERVED = 3 /* 3 and greater are reserved */
};
/* SRAT sub-tables */
+
+/* 0: Processor Local APIC/SAPIC Affinity */
struct acpi_srat_cpu_affinity {
struct acpi_subtable_header header;
@@ -661,9 +686,7 @@ struct acpi_srat_cpu_affinity {
u32 reserved; /* Reserved, must be zero */
};
-/* Flags */
-
-#define ACPI_SRAT_CPU_ENABLED (1) /* 00: Use affinity structure */
+/* 1: Memory Affinity */
struct acpi_srat_mem_affinity {
struct acpi_subtable_header header;
@@ -681,6 +704,22 @@ struct acpi_srat_mem_affinity {
#define ACPI_SRAT_MEM_ENABLED (1) /* 00: Use affinity structure */
#define ACPI_SRAT_MEM_HOT_PLUGGABLE (1<<1) /* 01: Memory region is hot
pluggable */
#define ACPI_SRAT_MEM_NON_VOLATILE (1<<2) /* 02: Memory region is
non-volatile */
+
+/* 2: Processor Local X2_APIC Affinity (ACPI 4.0) */
+
+struct acpi_srat_x2apic_cpu_affinity {
+ struct acpi_subtable_header header;
+ u16 reserved; /* Reserved, must be zero */
+ u32 proximity_domain;
+ u32 apic_id;
+ u32 flags;
+ u32 clock_domain;
+ u32 reserved2;
+};
+
+/* Flags for struct acpi_srat_cpu_affinity and struct
acpi_srat_x2apic_cpu_affinity */
+
+#define ACPI_SRAT_CPU_ENABLED (1) /* 00: Use affinity structure */
/*******************************************************************************
*
diff -r 1f7c2418e58c -r fedab6367c9a xen/include/asm-x86/acpi.h
--- a/xen/include/asm-x86/acpi.h Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/include/asm-x86/acpi.h Fri Jul 16 13:52:18 2010 +0100
@@ -151,7 +151,7 @@ struct acpi_sleep_info {
#endif /* CONFIG_ACPI_SLEEP */
#define MAX_MADT_ENTRIES 256
-extern u8 x86_acpiid_to_apicid[];
+extern u32 x86_acpiid_to_apicid[];
#define MAX_LOCAL_APIC 256
extern u32 pmtmr_ioport;
diff -r 1f7c2418e58c -r fedab6367c9a xen/include/asm-x86/mpspec.h
--- a/xen/include/asm-x86/mpspec.h Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/include/asm-x86/mpspec.h Fri Jul 16 13:52:18 2010 +0100
@@ -24,7 +24,7 @@ extern int using_apic_timer;
extern int using_apic_timer;
#ifdef CONFIG_ACPI
-extern int mp_register_lapic (u8 id, u8 enabled);
+extern int mp_register_lapic (u32 id, u8 enabled);
extern void mp_unregister_lapic(uint32_t apic_id, uint32_t cpu);
extern void mp_register_lapic_address (u64 address);
extern void mp_register_ioapic (u8 id, u32 address, u32 gsi_base);
diff -r 1f7c2418e58c -r fedab6367c9a xen/include/xen/acpi.h
--- a/xen/include/xen/acpi.h Fri Jul 16 13:51:27 2010 +0100
+++ b/xen/include/xen/acpi.h Fri Jul 16 13:52:18 2010 +0100
@@ -57,6 +57,8 @@ enum acpi_madt_entry_id {
ACPI_MADT_IOSAPIC,
ACPI_MADT_LSAPIC,
ACPI_MADT_PLAT_INT_SRC,
+ ACPI_MADT_X2APIC,
+ ACPI_MADT_X2APIC_NMI,
ACPI_MADT_ENTRY_COUNT
};
@@ -76,6 +78,17 @@ struct acpi_table_lapic {
} flags;
} __attribute__ ((packed));
+struct acpi_table_x2apic {
+ struct acpi_subtable_header header;
+ u16 reserved;
+ u32 id;
+ struct {
+ u32 enabled:1;
+ u32 reserved:31;
+ } flags;
+ u32 acpi_uid;
+} __attribute__ ((packed));
+
struct acpi_table_ioapic {
struct acpi_subtable_header header;
u8 id;
@@ -103,6 +116,14 @@ struct acpi_table_lapic_nmi {
u8 acpi_id;
acpi_interrupt_flags flags;
u8 lint;
+} __attribute__ ((packed));
+
+struct acpi_table_x2apic_nmi {
+ struct acpi_subtable_header header;
+ acpi_interrupt_flags flags;
+ u32 acpi_uid;
+ u8 lint;
+ u8 reserved[3];
} __attribute__ ((packed));
struct acpi_table_lapic_addr_ovr {
@@ -280,6 +301,7 @@ void acpi_table_print_srat_entry (struct
/* 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);
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