diff options
| -rw-r--r-- | hw/acpi/aml-build.c | 33 | ||||
| -rw-r--r-- | include/hw/acpi/aml-build.h | 3 |
2 files changed, 36 insertions, 0 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 60246eb9c2..c4120ef609 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -1267,6 +1267,39 @@ Aml *aml_sizeof(Aml *arg) return var; } +/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefMutex */ +Aml *aml_mutex(const char *name, uint8_t sync_level) +{ + 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); + assert(!(sync_level & 0xF0)); + build_append_byte(var->buf, sync_level); + 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 fba8f2537d..4831c5536f 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -304,6 +304,9 @@ Aml *aml_package(uint8_t num_elements); Aml *aml_buffer(int buffer_size, uint8_t *byte_list); Aml *aml_resource_template(void); Aml *aml_field(const char *name, AmlAccessType type, AmlUpdateRule rule); +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_create_dword_field(Aml *srcbuf, Aml *index, const char *name); Aml *aml_varpackage(uint32_t num_elements); Aml *aml_touuid(const char *uuid); |