target/ppc/POWER9: Add POWER9 mmu fault handler

Add a new mmu fault handler for the POWER9 cpu and add it as the handler
for the POWER9 cpu definition.

This handler checks if the guest is radix or hash based on the value in the
partition table entry and calls the correct fault handler accordingly.

The hash fault handling code has also been updated to check if the
partition is using segment tables.

Currently only legacy hash (no segment tables) is supported.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 37 insertions, 0 deletions

diff --git a/target/ppc/mmu-book3s-v3.c b/target/ppc/mmu-book3s-v3.c
new file mode 100644
index 0000000000..005c96340a
--- /dev/null
+++ b/target/ppc/mmu-book3s-v3.c
@@ -0,0 +1,37 @@
+/*
+ *  PowerPC ISAV3 BookS emulation generic mmu helpers for qemu.
+ *
+ *  Copyright (c) 2017 Suraj Jitindar Singh, IBM Corporation
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "cpu.h"
+#include "mmu-hash64.h"
+#include "mmu-book3s-v3.h"
+#include "qemu/error-report.h"
+
+int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
+                              int mmu_idx)
+{
+    if (ppc64_radix_guest(cpu)) { /* Guest uses radix */
+        /* TODO - Unsupported */
+        error_report("Guest Radix Support Unimplemented");
+        exit(1);
+    } else { /* Guest uses hash */
+        return ppc_hash64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
+    }
+}