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[Qemu-devel] [PATCH v3 04/32] acpi: add aml_mutex, aml_acquire, aml_rele
From: |
Xiao Guangrong |
Subject: |
[Qemu-devel] [PATCH v3 04/32] acpi: add aml_mutex, aml_acquire, aml_release |
Date: |
Sun, 11 Oct 2015 11:52:36 +0800 |
Implement Mutex, Acquire and Release terms which are used by NVDIMM _DSM method
in later patch
Signed-off-by: Xiao Guangrong <address@hidden>
---
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
- Re: [Qemu-devel] [PATCH v3 00/32] implement vNVDIMM, (continued)
[Qemu-devel] [PATCH v3 03/32] acpi: add aml_create_field, Xiao Guangrong, 2015/10/10
[Qemu-devel] [PATCH v3 14/32] pc-dimm: drop the prefix of pc-dimm, Xiao Guangrong, 2015/10/10
[Qemu-devel] [PATCH v3 04/32] acpi: add aml_mutex, aml_acquire, aml_release,
Xiao Guangrong <=
[Qemu-devel] [PATCH v3 10/32] hostmem-file: clean up memory allocation, Xiao Guangrong, 2015/10/10
[Qemu-devel] [PATCH v3 12/32] pc-dimm: remove DEFAULT_PC_DIMMSIZE, Xiao Guangrong, 2015/10/10
[Qemu-devel] [PATCH v3 22/32] nvdimm: init the address region used by NVDIMM ACPI, Xiao Guangrong, 2015/10/10