Signed-off-by: Igor Mammedov <imamm...@redhat.com>
---
v2:
fix style error: line over 80 chr
---
hw/acpi/acpi-build-utils.c | 28 ++++++++++++++++++++++++++++
include/hw/acpi/acpi-build-utils.h | 6 ++++++
2 files changed, 34 insertions(+)
diff --git a/hw/acpi/acpi-build-utils.c b/hw/acpi/acpi-build-utils.c
index 9ac5a0d..8955608 100644
--- a/hw/acpi/acpi-build-utils.c
+++ b/hw/acpi/acpi-build-utils.c
@@ -225,6 +225,16 @@ 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);
@@ -558,3 +568,21 @@ AcpiAml acpi_operation_region(const char *name,
acpiRegionSpace rs,
build_append_int(var.buf, len);
return var;
}
+
+/* ACPI 5.0: 20.2.5.2 Named Objects Encoding: NamedField */
+AcpiAml acpi_named_field(const char *name, unsigned length)
+{
+ AcpiAml var = aml_allocate_internal(0, NON_BLOCK);
+ build_append_nameseg(var.buf, "%s", name);
+ build_append_pkg_length(var.buf, length, false);
+ return var;
+}
+
+/* ACPI 5.0: 20.2.5.2 Named Objects Encoding: DefField */
+AcpiAml acpi_field(const char *name, acpiFieldFlags flags)
+{
+ AcpiAml var = aml_allocate_internal(0x81 /* FieldOp */, EXT_PACKAGE);
+ build_append_namestring(var.buf, "%s", name);
+ build_append_byte(var.buf, flags);
+ return var;
+}
diff --git a/include/hw/acpi/acpi-build-utils.h
b/include/hw/acpi/acpi-build-utils.h
index cb45129..b94098a 100644
--- a/include/hw/acpi/acpi-build-utils.h
+++ b/include/hw/acpi/acpi-build-utils.h
@@ -25,6 +25,10 @@ typedef enum {
} acpiIODecode;
typedef enum {
+ acpi_byte_acc = 1,
+} acpiFieldFlags;
+
+typedef enum {
acpi_system_memory = 0x00,
acpi_system_io = 0x01,
} acpiRegionSpace;
@@ -53,6 +57,7 @@ AcpiAml acpi_io(acpiIODecode dec, uint16_t min_base, uint16_t
max_base,
uint8_t aln, uint8_t len);
AcpiAml acpi_operation_region(const char *name, acpiRegionSpace rs,
uint32_t offset, uint32_t len);
+AcpiAml acpi_named_field(const char *name, unsigned length);
/* Block ASL object primitives */
AcpiAml acpi_if(AcpiAml predicate);
@@ -62,6 +67,7 @@ AcpiAml GCC_FMT_ATTR(1, 2) acpi_device(const char
*name_format, ...);
AcpiAml acpi_buffer(void);
AcpiAml acpi_resource_template(void);
AcpiAml acpi_package(uint8_t num_elements);
+AcpiAml acpi_field(const char *name, acpiFieldFlags flags);
/* other helpers */
GArray *build_alloc_array(void);
--
1.8.3.1
