[PATCH 1/2][V3] acpi: Add ACPI CPEP test (LP: #1467870)

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

This checks for errors in the ACPI CPEP

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/Makefile.am      |   1 +
 src/acpi/cpep/cpep.c | 128 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 src/acpi/cpep/cpep.c

diff --git a/src/Makefile.am b/src/Makefile.am
index 3829d09..05170c1 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -36,6 +36,7 @@ fwts_SOURCES = main.c 				\
 	acpi/brightness/brightness.c 		\
 	acpi/brightness/autobrightness.c 	\
 	acpi/checksum/checksum.c 		\
+	acpi/cpep/cpep.c			\
 	acpi/crsdump/crsdump.c			\
 	acpi/crsdump/prsdump.c			\
 	acpi/cstates/cstates.c 			\
diff --git a/src/acpi/cpep/cpep.c b/src/acpi/cpep/cpep.c
new file mode 100644
index 0000000..6b717c4
--- /dev/null
+++ b/src/acpi/cpep/cpep.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2015 Canonical
+ *
+ * Portions of this code original from the Linux-ready Firmware Developer Kit
+ *
+ * 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"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <string.h>
+#include <ctype.h>
+
+static fwts_acpi_table_info *table;
+
+static int cpep_init(fwts_framework *fw)
+{
+	if (fwts_acpi_find_table(fw, "CPEP", 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 CPEP table does not exist, skipping test");
+		return FWTS_SKIP;
+	}
+	return FWTS_OK;
+}
+
+/*
+ *  CPEP Corrected Platform Error Polling Table
+ */
+static int cpep_test1(fwts_framework *fw)
+{
+	fwts_acpi_table_cpep *cpep = (fwts_acpi_table_cpep*)table->data;
+	bool passed = true;
+	uint32_t i, n;
+
+	fwts_log_info_verbatum(fw, "CPEP Corrected Platform Error Polling Table:");
+	fwts_log_info_verbatum(fw, "  Reserved:                "
+		" 0x%2.2" PRIx8 " 0x%2.2" PRIx8 " 0x%2.2" PRIx8 " 0x%2.2" PRIx8
+		" 0x%2.2" PRIx8 " 0x%2.2" PRIx8 " 0x%2.2" PRIx8 " 0x%2.2" PRIx8 ,
+		cpep->reserved[0], cpep->reserved[1], cpep->reserved[2], cpep->reserved[3],
+		cpep->reserved[4], cpep->reserved[4], cpep->reserved[6], cpep->reserved[7]);
+
+	if (cpep->reserved[0] | cpep->reserved[1] |
+	    cpep->reserved[2] | cpep->reserved[3] |
+	    cpep->reserved[4] | cpep->reserved[5] |
+            cpep->reserved[6] | cpep->reserved[7]) {
+		passed = false;
+		fwts_failed(fw, LOG_LEVEL_MEDIUM,
+			"CPEPNonZeroReserved",
+			"CPEP: Reserved field contains a non-zero value");
+	}
+	n = (table->length - sizeof(fwts_acpi_table_cpep)) /
+		sizeof(fwts_acpi_cpep_processor_info);
+
+	for (i = 0; i < n; i++) {
+		bool cpep_passed = true;
+		fwts_acpi_cpep_processor_info *info = &cpep->cpep_info[i];
+
+		if (info->type != 0) {
+			cpep_passed = false;
+			fwts_failed(fw, LOG_LEVEL_HIGH,
+				"CPEPInvalidProcStructureType",
+				"CPEP: Processor Structure %" PRIu32
+				" Type field is 0x%" PRIx8
+				" and was expected to be 0x00",
+				i, info->type);
+		}
+		if (info->length != 8) {
+			cpep_passed = false;
+			fwts_failed(fw, LOG_LEVEL_MEDIUM,
+				"CPEPInvalidProcStructureType",
+				"CPEP: Processor Structure %" PRIu32
+				" Length field is 0x%" PRIx8
+				" and was expected to be 0x08",
+				i, info->length);
+		}
+		/* Should probably sanity check processor UID, EIDs at a later date */
+
+		/* Some feedback if polling interval is very short */
+		if (info->polling_interval < 5) {
+			fwts_warning(fw, "CPEP Processor Structure %" PRIu32
+				" Polling Interval of %" PRIu32
+				" milliseconds is relatively short and may "
+				"cause excessive polling CPU load",
+				i, info->polling_interval);
+		}
+		if (cpep_passed)
+			fwts_log_info(fw, "CPEP Processor Structure %" PRIu32 " looks sane.", i);
+		passed &= cpep_passed;
+	}
+
+
+	if (passed)
+		fwts_passed(fw, "No issues found in CPEP table.");
+
+	return FWTS_OK;
+}
+
+static fwts_framework_minor_test cpep_tests[] = {
+	{ cpep_test1, "CPEP Corrected Platform Error Polling Table test." },
+	{ NULL, NULL }
+};
+
+static fwts_framework_ops cpep_ops = {
+	.description = "CPEP Corrected Platform Error Polling Table test.",
+	.init        = cpep_init,
+	.minor_tests = cpep_tests
+};
+
+FWTS_REGISTER("cpep", &cpep_ops, FWTS_TEST_ANYTIME, FWTS_FLAG_BATCH | FWTS_FLAG_TEST_ACPI)
-- 
2.1.4