Extend TPM TIS interface to support TPM 2

Following the recent upgrade to version 1.3, extend the TPM TIS
interface with capabilities introduced for support of a TPM 2.

TPM TIS for TPM 2 introduced the following extensions beyond the
TPM TIS 1.3 (used for TPM 1.2):

- A new 32bit interface Id register was introduced.
- New flags for the status (STS) register were defined.
- New flags for the capability flags were defined.

Support the above if a TPM TIS 1.3 for TPM 2 is used with a TPM 2
on the backend side. Support the old TPM TIS 1.3 configuration if a
TPM 1.2 is being used. A subsequent patch will then determine which
TPM version is being used in the backend.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
index 9b81ce9..848df41 100644
--- a/include/sysemu/tpm.h
+++ b/include/sysemu/tpm.h
@@ -20,6 +20,12 @@ int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
 int tpm_init(void);
 void tpm_cleanup(void);
 
+typedef enum  TPMVersion {
+    TPM_VERSION_UNSPEC = 0,
+    TPM_VERSION_1_2 = 1,
+    TPM_VERSION_2_0 = 2,
+} TPMVersion;
+
 #define TYPE_TPM_TIS                "tpm-tis"
 
 static inline bool tpm_find(void)