[PATCH v4 06/10] qemu_validate.c: add validation for TPM Proxy model

[Daniel Henrique Barboza <danielhb413@xxxxxxxxx>]

Previous patch handled the conversion of def->tpm to the
array def->tpms. What we're missing now is the validation
code to make the VIR_DOMAIN_TPM_MODEL_SPAPR_PROXY model
exclusive to PPC64 guests and VIR_DOMAIN_TPM_TYPE_PASSTHROUGH
backend.

Signed-off-by: Daniel Henrique Barboza <danielhb413@xxxxxxxxx>
---
 src/qemu/qemu_validate.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 584d1375b8..28e02ebefc 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -3623,6 +3623,25 @@ qemuValidateDomainDeviceDefTPM(virDomainTPMDef *tpm,
     case VIR_DOMAIN_TPM_MODEL_SPAPR:
         flag = QEMU_CAPS_DEVICE_TPM_SPAPR;
         break;
+    case VIR_DOMAIN_TPM_MODEL_SPAPR_PROXY:
+        if (!ARCH_IS_PPC64(def->os.arch)) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("TPM Proxy model %s is only available for "
+                             "PPC64 guests"),
+                          virDomainTPMModelTypeToString(tpm->model));
+            return -1;
+        }
+
+        /* TPM Proxy devices have 'passthrough' backend */
+        if (tpm->type != VIR_DOMAIN_TPM_TYPE_PASSTHROUGH) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("TPM Proxy model %s requires "
+                             "'Passthrough' backend"),
+                            virDomainTPMModelTypeToString(tpm->model));
+        }
+
+        flag = QEMU_CAPS_DEVICE_SPAPR_TPM_PROXY;
+        break;
     case VIR_DOMAIN_TPM_MODEL_LAST:
     default:
         virReportEnumRangeError(virDomainTPMModel, tpm->model);
-- 
2.26.2