Check if the input Arg3 is valid then store it into dsm_in if needed
Signed-off-by: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>
---
hw/acpi/nvdimm.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
index 8412be3..69de4f6 100644
--- a/hw/acpi/nvdimm.c
+++ b/hw/acpi/nvdimm.c
@@ -524,13 +524,38 @@ static void nvdimm_build_acpi_devices(GSList *device_list, Aml *sb_scope)
method = aml_method_serialized("NCAL", 4);
{
- Aml *buffer_size = aml_local(0);
+ Aml *ifctx, *pckg, *buffer_size = aml_local(0);
aml_append(method, aml_store(aml_arg(0), aml_name("HDLE")));
aml_append(method, aml_store(aml_arg(1), aml_name("REVS")));
aml_append(method, aml_store(aml_arg(2), aml_name("FUNC")));
/*
+ * The fourth parameter (Arg3) of _DSM is a package which contains
+ * a buffer, the layout of the buffer is specified by UUID (Arg0),
+ * Revision ID (Arg1) and Function Index (Arg2) which are documented
+ * in the DSM Spec.
+ */
+ pckg = aml_arg(3);
+ ifctx = aml_if(aml_and(aml_equal(aml_object_type(pckg),
+ aml_int(4 /* Package */)),
+ aml_equal(aml_sizeof(pckg),
+ aml_int(1))));
+ {
+ Aml *pckg_index, *pckg_buf;
+
+ pckg_index = aml_local(2);
+ pckg_buf = aml_local(3);
+
+ aml_append(ifctx, aml_store(aml_index(pckg, aml_int(0)),
+ pckg_index));
+ aml_append(ifctx, aml_store(aml_derefof(pckg_index),
+ pckg_buf));
+ aml_append(ifctx, aml_store(pckg_buf, aml_name("ARG3")));
+ }
+ aml_append(method, ifctx);
+
+ /*
* transfer control to QEMU and the buffer size filled by
* QEMU is returned.
*/
--
1.8.3.1
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