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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 13/19] hvmloader: construct SRAT
Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Cc: Jan Beulich <JBeulich@xxxxxxxx>
---
Changes in v3:
1. Remove redundant variable.
2. Coding style fix.
3. Add assertion.
Changes in v2:
1. Remove explicit zero initializers.
2. Adapt to new vNUMA retrieval routine.
3. Move SRAT very late in secondary table build.
---
tools/firmware/hvmloader/acpi/acpi2_0.h | 53 +++++++++++++++++++++++
tools/firmware/hvmloader/acpi/build.c | 72 +++++++++++++++++++++++++++++++
2 files changed, 125 insertions(+)
diff --git a/tools/firmware/hvmloader/acpi/acpi2_0.h
b/tools/firmware/hvmloader/acpi/acpi2_0.h
index 7b22d80..6169213 100644
--- a/tools/firmware/hvmloader/acpi/acpi2_0.h
+++ b/tools/firmware/hvmloader/acpi/acpi2_0.h
@@ -364,6 +364,57 @@ struct acpi_20_madt_intsrcovr {
};
/*
+ * System Resource Affinity Table header definition (SRAT)
+ */
+struct acpi_20_srat {
+ struct acpi_header header;
+ uint32_t table_revision;
+ uint32_t reserved2[2];
+};
+
+#define ACPI_SRAT_TABLE_REVISION 1
+
+/*
+ * System Resource Affinity Table structure types.
+ */
+#define ACPI_PROCESSOR_AFFINITY 0x0
+#define ACPI_MEMORY_AFFINITY 0x1
+struct acpi_20_srat_processor {
+ uint8_t type;
+ uint8_t length;
+ uint8_t domain;
+ uint8_t apic_id;
+ uint32_t flags;
+ uint8_t sapic_id;
+ uint8_t domain_hi[3];
+ uint32_t reserved;
+};
+
+/*
+ * Local APIC Affinity Flags. All other bits are reserved and must be 0.
+ */
+#define ACPI_LOCAL_APIC_AFFIN_ENABLED (1 << 0)
+
+struct acpi_20_srat_memory {
+ uint8_t type;
+ uint8_t length;
+ uint32_t domain;
+ uint16_t reserved;
+ uint64_t base_address;
+ uint64_t mem_length;
+ uint32_t reserved2;
+ uint32_t flags;
+ uint64_t reserved3;
+};
+
+/*
+ * Memory Affinity Flags. All other bits are reserved and must be 0.
+ */
+#define ACPI_MEM_AFFIN_ENABLED (1 << 0)
+#define ACPI_MEM_AFFIN_HOTPLUGGABLE (1 << 1)
+#define ACPI_MEM_AFFIN_NONVOLATILE (1 << 2)
+
+/*
* Table Signatures.
*/
#define ACPI_2_0_RSDP_SIGNATURE ASCII64('R','S','D',' ','P','T','R',' ')
@@ -375,6 +426,7 @@ struct acpi_20_madt_intsrcovr {
#define ACPI_2_0_TCPA_SIGNATURE ASCII32('T','C','P','A')
#define ACPI_2_0_HPET_SIGNATURE ASCII32('H','P','E','T')
#define ACPI_2_0_WAET_SIGNATURE ASCII32('W','A','E','T')
+#define ACPI_2_0_SRAT_SIGNATURE ASCII32('S','R','A','T')
/*
* Table revision numbers.
@@ -388,6 +440,7 @@ struct acpi_20_madt_intsrcovr {
#define ACPI_2_0_HPET_REVISION 0x01
#define ACPI_2_0_WAET_REVISION 0x01
#define ACPI_1_0_FADT_REVISION 0x01
+#define ACPI_2_0_SRAT_REVISION 0x01
#pragma pack ()
diff --git a/tools/firmware/hvmloader/acpi/build.c
b/tools/firmware/hvmloader/acpi/build.c
index 1431296..3e96c23 100644
--- a/tools/firmware/hvmloader/acpi/build.c
+++ b/tools/firmware/hvmloader/acpi/build.c
@@ -23,6 +23,7 @@
#include "ssdt_pm.h"
#include "../config.h"
#include "../util.h"
+#include "../vnuma.h"
#include <xen/hvm/hvm_xs_strings.h>
#include <xen/hvm/params.h>
@@ -203,6 +204,66 @@ static struct acpi_20_waet *construct_waet(void)
return waet;
}
+static struct acpi_20_srat *construct_srat(void)
+{
+ struct acpi_20_srat *srat;
+ struct acpi_20_srat_processor *processor;
+ struct acpi_20_srat_memory *memory;
+ unsigned int size;
+ void *p;
+ int i;
+
+ size = sizeof(*srat) + sizeof(*processor) * hvm_info->nr_vcpus +
+ sizeof(*memory) * nr_vmemranges;
+
+ p = mem_alloc(size, 16);
+ if ( !p )
+ return NULL;
+
+ srat = p;
+ memset(srat, 0, sizeof(*srat));
+ srat->header.signature = ACPI_2_0_SRAT_SIGNATURE;
+ srat->header.revision = ACPI_2_0_SRAT_REVISION;
+ fixed_strcpy(srat->header.oem_id, ACPI_OEM_ID);
+ fixed_strcpy(srat->header.oem_table_id, ACPI_OEM_TABLE_ID);
+ srat->header.oem_revision = ACPI_OEM_REVISION;
+ srat->header.creator_id = ACPI_CREATOR_ID;
+ srat->header.creator_revision = ACPI_CREATOR_REVISION;
+ srat->table_revision = ACPI_SRAT_TABLE_REVISION;
+
+ processor = (struct acpi_20_srat_processor *)(srat + 1);
+ for ( i = 0; i < hvm_info->nr_vcpus; i++ )
+ {
+ memset(processor, 0, sizeof(*processor));
+ processor->type = ACPI_PROCESSOR_AFFINITY;
+ processor->length = sizeof(*processor);
+ processor->domain = vcpu_to_vnode[i];
+ processor->apic_id = LAPIC_ID(i);
+ processor->flags = ACPI_LOCAL_APIC_AFFIN_ENABLED;
+ processor++;
+ }
+
+ memory = (struct acpi_20_srat_memory *)processor;
+ for ( i = 0; i < nr_vmemranges; i++ )
+ {
+ memset(memory, 0, sizeof(*memory));
+ memory->type = ACPI_MEMORY_AFFINITY;
+ memory->length = sizeof(*memory);
+ memory->domain = vmemrange[i].nid;
+ memory->flags = ACPI_MEM_AFFIN_ENABLED;
+ memory->base_address = vmemrange[i].start;
+ memory->mem_length = vmemrange[i].end - vmemrange[i].start;
+ memory++;
+ }
+
+ ASSERT(((unsigned long)memory) - ((unsigned long)p) == size);
+
+ srat->header.length = size;
+ set_checksum(srat, offsetof(struct acpi_header, checksum), size);
+
+ return srat;
+}
+
static int construct_passthrough_tables(unsigned long *table_ptrs,
int nr_tables)
{
@@ -257,6 +318,7 @@ static int construct_secondary_tables(unsigned long
*table_ptrs,
struct acpi_20_hpet *hpet;
struct acpi_20_waet *waet;
struct acpi_20_tcpa *tcpa;
+ struct acpi_20_srat *srat;
unsigned char *ssdt;
static const uint16_t tis_signature[] = {0x0001, 0x0001, 0x0001};
uint16_t *tis_hdr;
@@ -346,6 +408,16 @@ static int construct_secondary_tables(unsigned long
*table_ptrs,
}
}
+ /* SRAT */
+ if ( nr_vnodes > 0 )
+ {
+ srat = construct_srat();
+ if ( srat )
+ table_ptrs[nr_tables++] = (unsigned long)srat;
+ else
+ printf("Failed to build SRAT, skipping...\n");
+ }
+
/* Load any additional tables passed through. */
nr_tables += construct_passthrough_tables(table_ptrs, nr_tables);
--
1.7.10.4
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