[PATCH] acpi: dppt: add ACPI DPPT test (mantis 1795)

[Alex Hung]

This is a dummy test because DPPT is reserved in ACPI 6.2 but the
actual spec is not defined. Tests and fwts-test sync up will be
updated after DPPT spec is released.

Signed-off-by: Alex Hung <alex.hung at canonical.com>
---
 src/Makefile.am             |  1 +
 src/acpi/dppt/dppt.c        | 73 +++++++++++++++++++++++++++++++++++++++++++++
 src/lib/include/fwts_acpi.h |  7 +++++
 3 files changed, 81 insertions(+)
 create mode 100644 src/acpi/dppt/dppt.c

diff --git a/src/Makefile.am b/src/Makefile.am
index c752682..2b08858 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -67,6 +67,7 @@ fwts_SOURCES = main.c 				\
 	acpi/dbgp/dbgp.c 			\
 	acpi/dbg2/dbg2.c 			\
 	acpi/dmar/dmar.c 			\
+	acpi/dppt/dppt.c 			\
 	acpi/drtm/drtm.c 			\
 	acpi/ecdt/ecdt.c			\
 	acpi/einj/einj.c			\
diff --git a/src/acpi/dppt/dppt.c b/src/acpi/dppt/dppt.c
new file mode 100644
index 0000000..5980ba9
--- /dev/null
+++ b/src/acpi/dppt/dppt.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2017 Canonical
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+#include "fwts.h"
+
+#if defined(FWTS_HAS_ACPI)
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <string.h>
+
+static fwts_acpi_table_info *table;
+
+static int dppt_init(fwts_framework *fw)
+{
+	if (fwts_acpi_find_table(fw, "DPPT", 0, &table) != FWTS_OK) {
+		fwts_log_error(fw, "Cannot read ACPI tables");
+		return FWTS_ERROR;
+	}
+	if (table == NULL || (table && table->length == 0)) {
+		fwts_log_error(fw, "ACPI DPPT table does not exist, skipping test");
+		return FWTS_SKIP;
+	}
+
+	return FWTS_OK;
+}
+
+static int dppt_test1(fwts_framework *fw)
+{
+	fwts_acpi_table_dppt *dppt = (fwts_acpi_table_dppt *) table->data;
+	bool passed = true;
+
+	FWTS_UNUSED(dppt);
+
+	fwts_log_info_verbatim(fw, "DPPT DMA Protection Policy Table test:");
+
+	if (passed)
+		fwts_passed(fw, "No issues found in DPPT table.");
+
+	return FWTS_OK;
+}
+
+static fwts_framework_minor_test dppt_tests[] = {
+	{ dppt_test1, "Validate DPPT table." },
+	{ NULL, NULL }
+};
+
+static fwts_framework_ops dppt_ops = {
+	.description = "DPPT DMA Protection Policy Table test",
+	.init        = dppt_init,
+	.minor_tests = dppt_tests
+};
+
+FWTS_REGISTER("dppt", &dppt_ops, FWTS_TEST_ANYTIME, FWTS_FLAG_BATCH | FWTS_FLAG_TEST_ACPI)
+
+#endif
diff --git a/src/lib/include/fwts_acpi.h b/src/lib/include/fwts_acpi.h
index 4387efd..d919aa8 100644
--- a/src/lib/include/fwts_acpi.h
+++ b/src/lib/include/fwts_acpi.h
@@ -879,6 +879,13 @@ typedef struct {
 } __attribute__ ((packed)) fwts_acpi_table_dmar_device_scope;
 
 /*
+ * ACPI DPPT (DMA Protection Policy Table)
+  */
+typedef struct {
+	fwts_acpi_table_header header;
+} __attribute__ ((packed)) fwts_acpi_table_dppt;
+
+/*
  * ACPI SLIC (Microsoft Software Licensing Table)
  *  see "OEM Activation 2.0 for Windows Vista Operating Systems"
  */
-- 
2.7.4