target/i386: Add HMP and QMP interfaces for SGX

The QMP and HMP interfaces can be used by monitor or QMP tools to retrieve
the SGX information from VM side when SGX is enabled on Intel platform.

Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20210910102258.46648-2-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/hw/i386/sgx.c b/hw/i386/sgx.c
index 8a18cddc3f..ea75398575 100644
--- a/hw/i386/sgx.c
+++ b/hw/i386/sgx.c
@@ -17,6 +17,37 @@
 #include "monitor/qdev.h"
 #include "qapi/error.h"
 #include "exec/address-spaces.h"
+#include "hw/i386/sgx.h"
+
+SGXInfo *sgx_get_info(Error **errp)
+{
+    SGXInfo *info = NULL;
+    X86MachineState *x86ms;
+    PCMachineState *pcms =
+        (PCMachineState *)object_dynamic_cast(qdev_get_machine(),
+                                              TYPE_PC_MACHINE);
+    if (!pcms) {
+        error_setg(errp, "SGX is only supported on PC machines");
+        return NULL;
+    }
+
+    x86ms = X86_MACHINE(pcms);
+    if (!x86ms->sgx_epc_list) {
+        error_setg(errp, "No EPC regions defined, SGX not available");
+        return NULL;
+    }
+
+    SGXEPCState *sgx_epc = &pcms->sgx_epc;
+    info = g_new0(SGXInfo, 1);
+
+    info->sgx = true;
+    info->sgx1 = true;
+    info->sgx2 = true;
+    info->flc = true;
+    info->section_size = sgx_epc->size;
+
+    return info;
+}
 
 int sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size)
 {