linux-kernel - [PATCH V4 6/9] tools/arch/x86/intel_sdsi: Fix meter

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Message-Id: <20240411025856.2782476-7-david.e.box@linux.intel.com>
Date: Wed, 10 Apr 2024 19:58:53 -0700
From: "David E. Box" <david.e.box@...ux.intel.com>
To: david.e.box@...ux.intel.com,
	hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	sathyanarayanan.kuppuswamy@...ux.intel.com
Subject: [PATCH V4 6/9] tools/arch/x86/intel_sdsi: Fix meter_show display

Fixes sdsi_meter_cert_show() to correctly decode and display the meter
certificate output. Adds and displays a missing version field, displays the
ASCII name of the signature, and fixes the print alignment.

Fixes: 7fdc03a7370f ("tools/arch/x86: intel_sdsi: Add support for reading meter certificates")
Signed-off-by: David E. Box <david.e.box@...ux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
V4 - no changes

V3 - Change patch subject and changelog to clarify changes.
   - Use new BUNDLE_COUNT #def

V2 - Split of V1 patch 7

 tools/arch/x86/intel_sdsi/intel_sdsi.c | 29 +++++++++++++++++---------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/tools/arch/x86/intel_sdsi/intel_sdsi.c b/tools/arch/x86/intel_sdsi/intel_sdsi.c
index 7eaffcbff788..ae29214da102 100644
--- a/tools/arch/x86/intel_sdsi/intel_sdsi.c
+++ b/tools/arch/x86/intel_sdsi/intel_sdsi.c
@@ -153,11 +153,12 @@ struct bundle_encoding {
 };
 
 struct meter_certificate {
-	uint32_t block_signature;
+	uint32_t signature;
+	uint32_t version;
+	uint64_t ppin;
 	uint32_t counter_unit;
-	uint64_t ppin;
 	uint32_t bundle_length;
-	uint32_t reserved;
+	uint64_t reserved;
 	uint32_t mmrc_encoding;
 	uint32_t mmrc_counter;
 };
@@ -338,6 +339,7 @@ static int sdsi_meter_cert_show(struct sdsi_dev *s)
 	uint32_t count = 0;
 	FILE *cert_ptr;
 	int ret, size;
+	char name[4];
 
 	ret = sdsi_update_registers(s);
 	if (ret)
@@ -379,12 +381,19 @@ static int sdsi_meter_cert_show(struct sdsi_dev *s)
 	printf("\n");
 	printf("Meter certificate for device %s\n", s->dev_name);
 	printf("\n");
-	printf("Block Signature:       0x%x\n", mc->block_signature);
-	printf("Count Unit:            %dms\n", mc->counter_unit);
-	printf("PPIN:                  0x%lx\n", mc->ppin);
-	printf("Feature Bundle Length: %d\n", mc->bundle_length);
-	printf("MMRC encoding:         %d\n", mc->mmrc_encoding);
-	printf("MMRC counter:          %d\n", mc->mmrc_counter);
+
+	get_feature(mc->signature, name);
+	printf("Signature:                    %.4s\n", name);
+
+	printf("Version:                      %d\n", mc->version);
+	printf("Count Unit:                   %dms\n", mc->counter_unit);
+	printf("PPIN:                         0x%lx\n", mc->ppin);
+	printf("Feature Bundle Length:        %d\n", mc->bundle_length);
+
+	get_feature(mc->mmrc_encoding, name);
+	printf("MMRC encoding:                %.4s\n", name);
+
+	printf("MMRC counter:                 %d\n", mc->mmrc_counter);
 	if (mc->bundle_length % 8) {
 		fprintf(stderr, "Invalid bundle length\n");
 		return -1;
@@ -398,7 +407,7 @@ static int sdsi_meter_cert_show(struct sdsi_dev *s)
 
 	bec = (void *)(mc) + sizeof(mc);
 
-	printf("Number of Feature Counters:          %d\n", mc->bundle_length / 8);
+	printf("Number of Feature Counters:   %ld\n", BUNDLE_COUNT(mc->bundle_length));
 	while (count++ < mc->bundle_length / 8) {
 		char feature[5];
 
-- 
2.34.1