Implement Mutex, Acquire and Release terms which are used by NVDIMM _DSM method in later patch
Signed-off-by: Xiao Guangrong <guangrong.x...@linux.intel.com> --- hw/acpi/aml-build.c | 32 ++++++++++++++++++++++++++++++++ include/hw/acpi/aml-build.h | 3 +++ 2 files changed, 35 insertions(+) diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 9fe5e7b..ab52692 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -1164,6 +1164,38 @@ Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name) return var; } +/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefMutex */ +Aml *aml_mutex(const char *name, uint8_t flags) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ + build_append_byte(var->buf, 0x01); /* MutexOp */ + build_append_namestring(var->buf, "%s", name); + build_append_byte(var->buf, flags); + return var; +} + +/* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefAcquire */ +Aml *aml_acquire(Aml *mutex, uint16_t timeout) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ + build_append_byte(var->buf, 0x23); /* AcquireOp */ + aml_append(var, mutex); + build_append_int_noprefix(var->buf, timeout, sizeof(timeout)); + return var; +} + +/* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefRelease */ +Aml *aml_release(Aml *mutex) +{ + Aml *var = aml_alloc(); + build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ + build_append_byte(var->buf, 0x27); /* ReleaseOp */ + aml_append(var, mutex); + return var; +} + void build_header(GArray *linker, GArray *table_data, AcpiTableHeader *h, const char *sig, int len, uint8_t rev) diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index 7e1c43b..d494c0c 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -277,6 +277,9 @@ Aml *aml_unicode(const char *str); Aml *aml_derefof(Aml *arg); Aml *aml_sizeof(Aml *arg); Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name); +Aml *aml_mutex(const char *name, uint8_t flags); +Aml *aml_acquire(Aml *mutex, uint16_t timeout); +Aml *aml_release(Aml *mutex); void build_header(GArray *linker, GArray *table_data, -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html