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authorXiao Guangrong <guangrong.xiao@linux.intel.com>2016-06-07 20:22:03 +0800
committerMichael S. Tsirkin <mst@redhat.com>2016-06-24 05:13:57 +0300
commit90623ebf603168ca4ca73c7f017f926fd2f3ace2 (patch)
tree9ba02191721b22c2fa9862946f5c0aa1db74907f /hw/acpi
parent4568c948066737d116432dff8646c59f0ce67a38 (diff)
nvdimm acpi: check UUID
Check arg0 which indicates UUID to see if it is valid Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/acpi')
-rw-r--r--hw/acpi/nvdimm.c32
1 files changed, 26 insertions, 6 deletions
diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
index 95504e93f9..b01f2c6f4f 100644
--- a/hw/acpi/nvdimm.c
+++ b/hw/acpi/nvdimm.c
@@ -487,19 +487,39 @@ void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
static void nvdimm_build_common_dsm(Aml *dev)
{
- Aml *method, *ifctx, *function, *dsm_mem, *unpatched, *result_size;
+ Aml *method, *ifctx, *function, *handle, *uuid, *dsm_mem, *result_size;
+ Aml *elsectx, *unsupport, *unpatched, *expected_uuid, *uuid_invalid;
Aml *pckg, *pckg_index, *pckg_buf;
uint8_t byte_list[1];
method = aml_method(NVDIMM_COMMON_DSM, 5, AML_SERIALIZED);
+ uuid = aml_arg(0);
function = aml_arg(2);
+ handle = aml_arg(4);
dsm_mem = aml_name(NVDIMM_ACPI_MEM_ADDR);
/*
* do not support any method if DSM memory address has not been
* patched.
*/
- unpatched = aml_if(aml_equal(dsm_mem, aml_int(0x0)));
+ unpatched = aml_equal(dsm_mem, aml_int(0x0));
+
+ expected_uuid = aml_local(0);
+
+ ifctx = aml_if(aml_equal(handle, aml_int(0x0)));
+ aml_append(ifctx, aml_store(
+ aml_touuid("2F10E7A4-9E91-11E4-89D3-123B93F75CBA")
+ /* UUID for NVDIMM Root Device */, expected_uuid));
+ aml_append(method, ifctx);
+ elsectx = aml_else();
+ aml_append(elsectx, aml_store(
+ aml_touuid("4309AC30-0D11-11E4-9191-0800200C9A66")
+ /* UUID for NVDIMM Devices */, expected_uuid));
+ aml_append(method, elsectx);
+
+ uuid_invalid = aml_lnot(aml_equal(uuid, expected_uuid));
+
+ unsupport = aml_if(aml_or(unpatched, uuid_invalid, NULL));
/*
* function 0 is called to inquire what functions are supported by
@@ -508,19 +528,19 @@ static void nvdimm_build_common_dsm(Aml *dev)
ifctx = aml_if(aml_equal(function, aml_int(0)));
byte_list[0] = 0 /* No function Supported */;
aml_append(ifctx, aml_return(aml_buffer(1, byte_list)));
- aml_append(unpatched, ifctx);
+ aml_append(unsupport, ifctx);
/* No function is supported yet. */
byte_list[0] = 1 /* Not Supported */;
- aml_append(unpatched, aml_return(aml_buffer(1, byte_list)));
- aml_append(method, unpatched);
+ aml_append(unsupport, aml_return(aml_buffer(1, byte_list)));
+ aml_append(method, unsupport);
/*
* The HDLE indicates the DSM function is issued from which device,
* it reserves 0 for root device and is the handle for NVDIMM devices.
* See the comments in nvdimm_slot_to_handle().
*/
- aml_append(method, aml_store(aml_arg(4), aml_name("HDLE")));
+ aml_append(method, aml_store(handle, 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")));