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acpi: add aml_mutex(), aml_acquire(), aml_release()

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Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xiao Guangrong 2015-12-10 00:40:59 +01:00 committed by Michael S. Tsirkin
parent 2d3f667dc6
commit 6e1db3f263
2 changed files with 36 additions and 0 deletions
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33
hw/acpi/aml-build.c
View File

@ -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,

3
include/hw/acpi/aml-build.h
View File

@ -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);