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acpi: Add HMAT to generic parsing tables 

The Heterogeneous Memory Attribute Table (HMAT) header has different
field lengths than the existing parsing uses. Add the HMAT type to the
parsing rules so it may be generically parsed.

Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Tested-by: Brice Goglin <Brice.Goglin@inria.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Keith Busch 2019-03-11 14:55:58 -06:00 committed by Greg Kroah-Hartman
parent 60574d1e05
commit 3bc0e8eb17
2 changed files with 10 additions and 0 deletions
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9
drivers/acpi/tables.c
View File

@ -51,6 +51,7 @@ static int acpi_apic_instance __initdata;
enum acpi_subtable_type {
ACPI_SUBTABLE_COMMON,
ACPI_SUBTABLE_HMAT,
};
struct acpi_subtable_entry {
@ -232,6 +233,8 @@ acpi_get_entry_type(struct acpi_subtable_entry *entry)
switch (entry->type) {
case ACPI_SUBTABLE_COMMON:
return entry->hdr->common.type;
case ACPI_SUBTABLE_HMAT:
return entry->hdr->hmat.type;
}
return 0;
}
@ -242,6 +245,8 @@ acpi_get_entry_length(struct acpi_subtable_entry *entry)
switch (entry->type) {
case ACPI_SUBTABLE_COMMON:
return entry->hdr->common.length;
case ACPI_SUBTABLE_HMAT:
return entry->hdr->hmat.length;
}
return 0;
}
@ -252,6 +257,8 @@ acpi_get_subtable_header_length(struct acpi_subtable_entry *entry)
switch (entry->type) {
case ACPI_SUBTABLE_COMMON:
return sizeof(entry->hdr->common);
case ACPI_SUBTABLE_HMAT:
return sizeof(entry->hdr->hmat);
}
return 0;
}
@ -259,6 +266,8 @@ acpi_get_subtable_header_length(struct acpi_subtable_entry *entry)
static enum acpi_subtable_type __init
acpi_get_subtable_type(char *id)
{
if (strncmp(id, ACPI_SIG_HMAT, 4) == 0)
return ACPI_SUBTABLE_HMAT;
return ACPI_SUBTABLE_COMMON;
}

1
include/linux/acpi.h
View File

@ -143,6 +143,7 @@ enum acpi_address_range_id {
/* Table Handlers */
union acpi_subtable_headers {
struct acpi_subtable_header common;
struct acpi_hmat_structure hmat;
};
typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);