[PATCH 1/2] acpi: dppt: add ACPI PDTT test (mantis 1576)

[Alex Hung]

Signed-off-by: Alex Hung <alex.hung at canonical.com>
---
 src/Makefile.am             |   1 +
 src/acpi/pdtt/pdtt.c        | 104 ++++++++++++++++++++++++++++++++++++++++++++
 src/lib/include/fwts_acpi.h |  15 +++++++
 3 files changed, 120 insertions(+)
 create mode 100644 src/acpi/pdtt/pdtt.c

diff --git a/src/Makefile.am b/src/Makefile.am
index 0f47b43..cd4b591 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -107,6 +107,7 @@ fwts_SOURCES = main.c 				\
 	acpi/osilinux/osilinux.c 		\
 	acpi/pcc/pcc.c 				\
 	acpi/pcct/pcct.c			\
+	acpi/pdtt/pdtt.c			\
 	acpi/powerbutton/powerbutton.c 		\
 	acpi/plddump/plddump.c			\
 	acpi/pmtt/pmtt.c 			\
diff --git a/src/acpi/pdtt/pdtt.c b/src/acpi/pdtt/pdtt.c
new file mode 100644
index 0000000..a7e5af0
--- /dev/null
+++ b/src/acpi/pdtt/pdtt.c
@@ -0,0 +1,104 @@
+/*
+ * 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.
+ *
+ */
+#include "fwts.h"
+
+#if defined(FWTS_HAS_ACPI)
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <stdbool.h>
+
+static fwts_acpi_table_info *table;
+
+static int pdtt_init(fwts_framework *fw)
+{
+	if (fwts_acpi_find_table(fw, "PDTT", 0, &table) != FWTS_OK) {
+		fwts_log_error(fw, "Cannot load ACPI table");
+		return FWTS_ERROR;
+	}
+	if (table == NULL) {
+		fwts_log_error(fw, "ACPI PDTT table does not exist, skipping test");
+		return FWTS_SKIP;
+	}
+
+	return FWTS_OK;
+}
+
+static int pdtt_test1(fwts_framework *fw)
+{
+	fwts_acpi_table_pdtt *pdtt = (fwts_acpi_table_pdtt*) table->data;
+	fwts_acpi_table_pdtt_channel *entry;
+	uint32_t offset, count, i;
+	uint32_t reserved;
+	bool passed = true;
+
+	reserved = (uint32_t) pdtt->reserved[0] + ((uint32_t) pdtt->reserved[1] << 8) +
+		   ((uint32_t) pdtt->reserved[2] << 16);
+
+	fwts_log_info_verbatim(fw, "PDTT Platform Debug Trigger Table:");
+	fwts_log_info_verbatim(fw, "  Trigger Count:           0x%2.2" PRIx8, pdtt->trigger_count);
+	fwts_log_info_verbatim(fw, "  Reserved[3]:             0x%6.6" PRIx32, reserved);
+	fwts_log_info_verbatim(fw, "  Trigger ID Array Offset: 0x%2.2" PRIx8, pdtt->array_offset);
+
+	fwts_acpi_reserved_zero_check(fw, "PDTT", "Reserved", reserved, sizeof(reserved), &passed);
+
+	offset = pdtt->array_offset;
+	entry = (fwts_acpi_table_pdtt_channel *) (table->data + offset);
+
+	count = (pdtt->header.length - pdtt->array_offset) / sizeof(fwts_acpi_table_pdtt_channel);
+	if (count != pdtt->trigger_count) {
+			passed = false;
+			fwts_failed(fw, LOG_LEVEL_CRITICAL,
+				"PDTTBadIDCount",
+				"PDTT should have %" PRId8 " ids, got %" PRId8,
+				pdtt->trigger_count, count);
+			return FWTS_OK;
+	}
+
+	fwts_log_info_verbatim(fw, "  Platform Communication Channel IDs");
+
+	for (i = 0; i < pdtt->trigger_count; i++) {
+		fwts_log_info_verbatim(fw, "    Sub channel ID:          0x%2.2" PRIx8, entry->sub_channel_id);
+		fwts_log_info_verbatim(fw, "    Flags:                   0x%2.2" PRIx8, entry->flags);
+		fwts_acpi_reserved_bits_check(fw, "PDTT", "Flags", entry->flags, sizeof(entry->flags), 2, 7, &passed);
+		offset += sizeof(fwts_acpi_table_pdtt_channel);
+		entry = (fwts_acpi_table_pdtt_channel *) (table->data + offset);
+	}
+
+	fwts_log_nl(fw);
+
+	if (passed)
+		fwts_passed(fw, "No issues found in PDTT table.");
+
+	return FWTS_OK;
+}
+
+static fwts_framework_minor_test pdtt_tests[] = {
+	{ pdtt_test1, "Validate PDTT table." },
+	{ NULL, NULL }
+};
+
+static fwts_framework_ops pdtt_ops = {
+	.description = "PDTT Platform Debug Trigger Table test.",
+	.init        = pdtt_init,
+	.minor_tests = pdtt_tests
+};
+
+FWTS_REGISTER("pdtt", &pdtt_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 4e29816..5e08395 100644
--- a/src/lib/include/fwts_acpi.h
+++ b/src/lib/include/fwts_acpi.h
@@ -1354,6 +1354,21 @@ typedef struct {
 } __attribute__ ((packed)) fwts_acpi_table_hmat_cache;
 
 /*
+ * ACPI PPTT (Platform Debug Trigger Table), 5.2.28
+ */
+typedef struct {
+	fwts_acpi_table_header	header;
+	uint8_t		trigger_count;
+	uint8_t		reserved[3];
+	uint32_t	array_offset;
+} __attribute__ ((packed)) fwts_acpi_table_pdtt;
+
+typedef struct {
+	uint8_t		sub_channel_id;
+	uint8_t		flags;
+} __attribute__ ((packed)) fwts_acpi_table_pdtt_channel;
+
+/*
  * ACPI PPTT (Processor Properties Topology Table), 5.2.29
  */
 typedef struct {
-- 
2.7.4