diff options
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2016-03-01 18:56:03 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-03-11 14:54:27 +0200 |
| commit | 39b6dbd8d7bbaa864ce42dcdcffe79313de9f2d6 (patch) | |
| tree | 73c48417f1ba135e9c14b2d11e835304c3aff7de | |
| parent | a648c137383d84bc4f95696e5293978d9541a26e (diff) | |
acpi: add aml_create_field()
It will be used by nvdimm acpi
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/acpi/aml-build.c | 14 | ||||
| -rw-r--r-- | include/hw/acpi/aml-build.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 667553514e..45b7f0abed 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -997,6 +997,20 @@ Aml *create_field_common(int opcode, Aml *srcbuf, Aml *index, const char *name) return var; } +/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateField */ +Aml *aml_create_field(Aml *srcbuf, Aml *bit_index, Aml *num_bits, + const char *name) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ + build_append_byte(var->buf, 0x13); /* CreateFieldOp */ + aml_append(var, srcbuf); + aml_append(var, bit_index); + aml_append(var, num_bits); + build_append_namestring(var->buf, "%s", name); + return var; +} + /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateDWordField */ Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name) { diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index d3e0c8fe87..7d26911d17 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -344,6 +344,8 @@ Aml *aml_mutex(const char *name, uint8_t sync_level); Aml *aml_acquire(Aml *mutex, uint16_t timeout); Aml *aml_release(Aml *mutex); Aml *aml_alias(const char *source_object, const char *alias_object); +Aml *aml_create_field(Aml *srcbuf, Aml *bit_index, Aml *num_bits, + const char *name); Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name); Aml *aml_create_qword_field(Aml *srcbuf, Aml *index, const char *name); Aml *aml_varpackage(uint32_t num_elements); |