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acpi: add aml_field() & aml_named_field() terms

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Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2015-02-18 19:14:35 +00:00 committed by Michael S. Tsirkin
parent 31127938f4
commit 214ae59f8e
2 changed files with 34 additions and 0 deletions
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28
hw/acpi/aml-build.c
View File

@ -216,6 +216,16 @@ build_prepend_package_length(GArray *package, unsigned length, bool incl_self)
build_prepend_byte(package, byte);
}
static void
build_append_pkg_length(GArray *array, unsigned length, bool incl_self)
{
GArray *tmp = build_alloc_array();
build_prepend_package_length(tmp, length, incl_self);
build_append_array(array, tmp);
build_free_array(tmp);
}
void build_package(GArray *package, uint8_t op)
{
build_prepend_package_length(package, package->len, true);
@ -568,3 +578,21 @@ Aml *aml_operation_region(const char *name, AmlRegionSpace rs,
build_append_int(var->buf, len);
return var;
}
/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: NamedField */
Aml *aml_named_field(const char *name, unsigned length)
{
Aml *var = aml_alloc();
build_append_nameseg(var->buf, name);
build_append_pkg_length(var->buf, length, false);
return var;
}
/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefField */
Aml *aml_field(const char *name, AmlFieldFlags flags)
{
Aml *var = aml_bundle(0x81 /* FieldOp */, AML_EXT_PACKAGE);
build_append_namestring(var->buf, "%s", name);
build_append_byte(var->buf, flags);
return var;
}

6
include/hw/acpi/aml-build.h
View File

@ -28,6 +28,10 @@ typedef enum {
aml_decode16 = 1,
} AmlIODecode;
typedef enum {
aml_byte_acc = 1,
} AmlFieldFlags;
typedef enum {
aml_system_memory = 0x00,
aml_system_io = 0x01,
@ -86,6 +90,7 @@ Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base,
uint8_t aln, uint8_t len);
Aml *aml_operation_region(const char *name, AmlRegionSpace rs,
uint32_t offset, uint32_t len);
Aml *aml_named_field(const char *name, unsigned length);
/* Block AML object primitives */
Aml *aml_scope(const char *name_format, ...) GCC_FMT_ATTR(1, 2);
@ -95,6 +100,7 @@ Aml *aml_if(Aml *predicate);
Aml *aml_package(uint8_t num_elements);
Aml *aml_buffer(void);
Aml *aml_resource_template(void);
Aml *aml_field(const char *name, AmlFieldFlags flags);
/* other helpers */
GArray *build_alloc_array(void);