[Qemu-devel] [RFC 24/47] acpi: add acpi_operation_region() term

[Igor Mammedov <imammedo@redhat.com>]

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/acpi/acpi_gen_utils.c         | 14 ++++++++++++++
 include/hw/acpi/acpi_gen_utils.h |  7 +++++++
 2 files changed, 21 insertions(+)

diff --git a/hw/acpi/acpi_gen_utils.c b/hw/acpi/acpi_gen_utils.c
index 37d59d0..c69c708 100644
--- a/hw/acpi/acpi_gen_utils.c
+++ b/hw/acpi/acpi_gen_utils.c
@@ -519,3 +519,17 @@ AcpiAml acpi_package(uint8_t num_elements)
     build_append_byte(var.buf, num_elements);
     return var;
 }
+
+/* ACPI 5.0: 20.2.5.2 Named Objects Encoding: DefOpRegion */
+AcpiAml acpi_operation_region(const char *name, acpiRegionSpace rs,
+                              uint32_t offset, uint32_t len)
+{
+    AcpiAml var = aml_allocate_internal(0, NON_BLOCK);
+    build_append_byte(var.buf, 0x5B); /* ExtOpPrefix */
+    build_append_byte(var.buf, 0x80); /* OpRegionOp */
+    build_append_namestring(var.buf, "%s", name);
+    build_append_byte(var.buf, rs);
+    build_append_int(var.buf, offset);
+    build_append_int(var.buf, len);
+    return var;
+}
diff --git a/include/hw/acpi/acpi_gen_utils.h b/include/hw/acpi/acpi_gen_utils.h
index 176596e..cb45129 100644
--- a/include/hw/acpi/acpi_gen_utils.h
+++ b/include/hw/acpi/acpi_gen_utils.h
@@ -24,6 +24,11 @@ typedef enum {
     acpi_decode16 = 1,
 } acpiIODecode;
 
+typedef enum {
+    acpi_system_memory = 0x00,
+    acpi_system_io = 0x01,
+} acpiRegionSpace;
+
 void aml_append(AcpiAml *parent_ctx, AcpiAml child);
 
 /* non block ASL object primitives */
@@ -46,6 +51,8 @@ AcpiAml acpi_call4(const char *method, AcpiAml arg1, AcpiAml arg2,
                    AcpiAml arg3, AcpiAml arg4);
 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);
 
 /* Block ASL object primitives */
 AcpiAml acpi_if(AcpiAml predicate);
-- 
1.8.3.1