From nobody Thu Apr 9 03:08:57 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19CDAC433FE for ; Sat, 19 Nov 2022 01:24:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232191AbiKSBYY (ORCPT ); Fri, 18 Nov 2022 20:24:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229470AbiKSBW6 (ORCPT ); Fri, 18 Nov 2022 20:22:58 -0500 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 098C853ED0; Fri, 18 Nov 2022 16:23:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1668817435; x=1700353435; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ELa4VyMmQa46ud+bAWUmad6+rz+mYWn3kNZACRLGq+Q=; b=iLjcAyDR8XeDWrZVfym+9vtqAjSJxuHZyJEuuoXsF8muuTk2Bi07Y39M BwwtmJ+SKknhy6V6Jojs2jbtVs5tUnm8erXHGMNw6hbCsuYe/CXSFsCnF DUpSVhOEMd8yKpUDgce4BNIslo7jZ9qXfjKW17wqGt4+66IkIuFpUUkGx 4xIc9dwxw3+7hh90Bpqr7XY0cs7tHYiYizABx46YAXd27cmMSLIFUiN9Z 0Auxv3TiBhF3sTiO5656aqZ+NCc/OZY8szlLkeZKpDuiW4llMweK8FJdu rdC5pxC9pHwrcwqOytaFa+nRAgH/ZG1BPJ7xXEvvp8wY+UXYHu7h0jaDe w==; X-IronPort-AV: E=McAfee;i="6500,9779,10535"; a="314418975" X-IronPort-AV: E=Sophos;i="5.96,175,1665471600"; d="scan'208";a="314418975" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Nov 2022 16:23:47 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10535"; a="765349184" X-IronPort-AV: E=Sophos;i="5.96,175,1665471600"; d="scan'208";a="765349184" Received: from linux.intel.com ([10.54.29.200]) by orsmga004.jf.intel.com with ESMTP; 18 Nov 2022 16:23:47 -0800 Received: from debox1-desk4.lan (unknown [10.252.138.169]) by linux.intel.com (Postfix) with ESMTP id F3A20580A6C; Fri, 18 Nov 2022 16:23:46 -0800 (PST) From: "David E. Box" To: david.e.box@linux.intel.com, hdegoede@redhat.com, markgross@kernel.org, andriy.shevchenko@linux.intel.com Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V2 9/9] tools/arch/x86: intel_sdsi: Add support for reading meter certificates Date: Fri, 18 Nov 2022 16:23:43 -0800 Message-Id: <20221119002343.1281885-10-david.e.box@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221119002343.1281885-1-david.e.box@linux.intel.com> References: <20221119002343.1281885-1-david.e.box@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add option to read and decode On Demand meter certificates. Link: https://github.com/intel/intel-sdsi/blob/master/meter-certificate.rst Signed-off-by: David E. Box Reviewed-by: Hans de Goede --- V2 - Use separate cases for state and meter switch options. tools/arch/x86/intel_sdsi/intel_sdsi.c | 110 ++++++++++++++++++++++++- 1 file changed, 108 insertions(+), 2 deletions(-) diff --git a/tools/arch/x86/intel_sdsi/intel_sdsi.c b/tools/arch/x86/intel_= sdsi/intel_sdsi.c index b42e1b6a6a1b..2cd92761f171 100644 --- a/tools/arch/x86/intel_sdsi/intel_sdsi.c +++ b/tools/arch/x86/intel_sdsi/intel_sdsi.c @@ -40,8 +40,10 @@ #define GUID_V2 0xF210D9EF #define REGS_SIZE_GUID_V2 80 #define STATE_CERT_MAX_SIZE 4096 +#define METER_CERT_MAX_SIZE 4096 #define STATE_MAX_NUM_LICENSES 16 #define STATE_MAX_NUM_IN_BUNDLE (uint32_t)8 +#define METER_MAX_NUM_BUNDLES 8 =20 #define __round_mask(x, y) ((__typeof__(x))((y) - 1)) #define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1) @@ -151,6 +153,21 @@ struct bundle_encoding { uint32_t encoding_rsvd[7]; }; =20 +struct meter_certificate { + uint32_t block_signature; + uint32_t counter_unit; + uint64_t ppin; + uint32_t bundle_length; + uint32_t reserved; + uint32_t mmrc_encoding; + uint32_t mmrc_counter; +}; + +struct bundle_encoding_counter { + uint32_t encoding; + uint32_t counter; +}; + struct sdsi_dev { struct sdsi_regs regs; struct state_certificate sc; @@ -161,6 +178,7 @@ struct sdsi_dev { =20 enum command { CMD_SOCKET_INFO, + CMD_METER_CERT, CMD_STATE_CERT, CMD_PROV_AKC, CMD_PROV_CAP, @@ -308,6 +326,86 @@ static void get_feature(uint32_t encoding, char *featu= re) feature[0] =3D name[3]; } =20 +static int sdsi_meter_cert_show(struct sdsi_dev *s) +{ + char buf[METER_CERT_MAX_SIZE] =3D {0}; + struct bundle_encoding_counter *bec; + struct meter_certificate *mc; + uint32_t count =3D 0; + FILE *cert_ptr; + int ret, size; + + ret =3D sdsi_update_registers(s); + if (ret) + return ret; + + if (!s->regs.en_features.sdsi) { + fprintf(stderr, "SDSi feature is present but not enabled.\n"); + fprintf(stderr, " Unable to read meter certificate\n"); + return -1; + } + + if (!s->regs.en_features.metering) { + fprintf(stderr, "Metering not supporting on this socket.\n"); + return -1; + } + + ret =3D chdir(s->dev_path); + if (ret =3D=3D -1) { + perror("chdir"); + return ret; + } + + cert_ptr =3D fopen("meter_certificate", "r"); + if (!cert_ptr) { + perror("Could not open 'meter_certificate' file"); + return -1; + } + + size =3D fread(buf, 1, sizeof(buf), cert_ptr); + if (!size) { + fprintf(stderr, "Could not read 'meter_certificate' file\n"); + fclose(cert_ptr); + return -1; + } + fclose(cert_ptr); + + mc =3D (struct meter_certificate *)buf; + + 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); + if (mc->bundle_length % 8) { + fprintf(stderr, "Invalid bundle length\n"); + return -1; + } + + if (mc->bundle_length > METER_MAX_NUM_BUNDLES * 8) { + fprintf(stderr, "More than %d bundles: %d\n", + METER_MAX_NUM_BUNDLES, mc->bundle_length / 8); + return -1; + } + + bec =3D (void *)(mc) + sizeof(mc); + + printf("Number of Feature Counters: %d\n", mc->bundle_length / 8= ); + while (count++ < mc->bundle_length / 8) { + char feature[5]; + + feature[4] =3D '\0'; + get_feature(bec[count].encoding, feature); + printf(" %s: %d\n", feature, bec[count].counter); + } + + return 0; +} + static int sdsi_state_cert_show(struct sdsi_dev *s) { char buf[STATE_CERT_MAX_SIZE] =3D {0}; @@ -627,7 +725,7 @@ static void sdsi_free_dev(struct sdsi_dev *s) =20 static void usage(char *prog) { - printf("Usage: %s [-l] [-d DEVNO [-i] [-s] [-a FILE] [-c FILE]]\n", prog); + printf("Usage: %s [-l] [-d DEVNO [-i] [-s] [-m] [-a FILE] [-c FILE]]\n", = prog); } =20 static void show_help(void) @@ -637,6 +735,7 @@ static void show_help(void) printf(" %-18s\t%s\n", "-d, --devno DEVNO", "On Demand device number"= ); printf(" %-18s\t%s\n", "-i, --info", "show socket information"= ); printf(" %-18s\t%s\n", "-s, --state", "show state certificate"); + printf(" %-18s\t%s\n", "-m, --meter", "show meter certificate"); printf(" %-18s\t%s\n", "-a, --akc FILE", "provision socket with AK= C FILE"); printf(" %-18s\t%s\n", "-c, --cap FILE>", "provision socket with CA= P FILE"); } @@ -658,6 +757,7 @@ int main(int argc, char *argv[]) {"help", no_argument, 0, 'h'}, {"info", no_argument, 0, 'i'}, {"list", no_argument, 0, 'l'}, + {"meter", no_argument, 0, 'm'}, {"state", no_argument, 0, 's'}, {0, 0, 0, 0 } }; @@ -665,7 +765,7 @@ int main(int argc, char *argv[]) =20 progname =3D argv[0]; =20 - while ((opt =3D getopt_long_only(argc, argv, "+a:c:d:hils", long_options, + while ((opt =3D getopt_long_only(argc, argv, "+a:c:d:hilms", long_options, &option_index)) !=3D -1) { switch (opt) { case 'd': @@ -678,6 +778,9 @@ int main(int argc, char *argv[]) case 'i': command =3D CMD_SOCKET_INFO; break; + case 'm': + command =3D CMD_METER_CERT; + break; case 's': command =3D CMD_STATE_CERT; break; @@ -715,6 +818,9 @@ int main(int argc, char *argv[]) case CMD_SOCKET_INFO: ret =3D sdsi_read_reg(s); break; + case CMD_METER_CERT: + ret =3D sdsi_meter_cert_show(s); + break; case CMD_STATE_CERT: ret =3D sdsi_state_cert_show(s); break; --=20 2.34.1