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[v2,11/15] nvdimm acpi: check revision

Message ID 1463732412-99212-12-git-send-email-guangrong.xiao@linux.intel.com
State New, archived
Headers show

Commit Message

Xiao Guangrong May 20, 2016, 8:20 a.m. UTC
Cuurently only revision 1 is supported

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
---
 hw/acpi/nvdimm.c | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
index 897d0a6..7af428f 100644
--- a/hw/acpi/nvdimm.c
+++ b/hw/acpi/nvdimm.c
@@ -483,6 +483,13 @@  nvdimm_dsm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
     nvdimm_debug("Revision %#x Handler %#x Function %#x.\n", in->revision,
                  in->handle, in->function);
 
+    if (in->revision != 0x1 /* Currently we only support DSM Spec Rev1. */) {
+        nvdimm_debug("Revision %#x is not supported, expect %#x.\n",
+                     in->revision, 0x1);
+        nvdimm_dsm_no_payload(1 /* Not Supported */, dsm_mem_addr);
+        goto exit;
+    }
+
      /* Handle 0 is reserved for NVDIMM Root Device. */
     if (!in->handle) {
         nvdimm_dsm_root(in, dsm_mem_addr);