test: linux: zynqmp: Add ion shmem test

Add ION shared memory test to ZynqMP

Signed-off-by: Wendy Liang <wendy.liang@xilinx.com>

test/system/linux/zynqmp/CMakeLists.txt

@@ -0,0 +1,3 @@
+collect (PROJECT_LIB_TESTS ion-shmem.c)
+
+# vim: expandtab:ts=2:sw=2:smartindent

test/system/linux/zynqmp/ion-shmem.c

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "metal-test.h"
+#include <metal/log.h>
+#include <metal/scatterlist.h>
+#include <metal/shmem.h>
+#include <stdlib.h>
+
+#define MB(n) (0x100000U * (n))
+#define SHM_SIZE MB(4)
+
+static int ion_shmem(void)
+{
+	struct metal_generic_shmem *shm;
+	struct metal_scatter_list *sg;
+	char *shm_name = "ion.reserved/shm0";
+	struct metal_io_region *io;
+	size_t size;
+	int ret;
+	void *va;
+	unsigned int *a;
+
+	size = SHM_SIZE;
+	ret = metal_shmem_open(shm_name,
+			       SHM_SIZE, METAL_SHM_NOTCACHED, &shm);
+	if (ret) {
+		metal_log(METAL_LOG_ERROR,
+			  "failed to open shared memory %s.\n",
+			  shm_name);
+		return -EINVAL;
+	}
+
+	sg = metal_shmem_mmap(shm, size);
+	if (sg == NULL) {
+		metal_log(METAL_LOG_ERROR,
+			  "failed to mmap shared memory from pool.\n");
+		return -EINVAL;
+	}
+	io = sg->ios;
+	va = metal_io_virt(io, 0);
+	a = va;
+	*a = 0xdeadbeff;
+	metal_shm_sync_for_cpu(shm, METAL_SHM_DIR_DEV_RW);
+	metal_shmem_munmap(shm, sg);
+	metal_shmem_close(shm);
+	return 0;
+}
+METAL_ADD_TEST(ion_shmem);
+