From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S970530AbeCSSiW (ORCPT ); Mon, 19 Mar 2018 14:38:22 -0400 Received: from mx-rz-2.rrze.uni-erlangen.de ([131.188.11.21]:35910 "EHLO mx-rz-2.rrze.uni-erlangen.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S970505AbeCSSiN (ORCPT ); Mon, 19 Mar 2018 14:38:13 -0400 Authentication-Results: mx-rz-2.rrze.uni-erlangen.de; dkim=none reason="no signature"; dkim-adsp=none (unprotected policy); dkim-atps=neutral X-Quarantine-ID: X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" X-RRZE-Flag: Not-Spam X-RRZE-Submit-IP: 2003:d5:3db:1800:60b5:55d8:d757:229 From: Jonas Rabenstein To: Jonas Rabenstein , Scott Bauer , Jonathan Derrick , Jens Axboe Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig Subject: [PATCH v2 10/11] block: sed-opal: get metadata about opal-sed tables Date: Mon, 19 Mar 2018 19:36:52 +0100 Message-Id: <623d80cb07538e630a12a1c925e9c87b8e14dd6b.1521482296.git.jonas.rabenstein@studium.uni-erlangen.de> X-Mailer: git-send-email 2.16.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Every opal-sed table is described in the OPAL_TABLE_TABLE. Provide a function to get desired metadata information out of that table. Signed-off-by: Jonas Rabenstein diff --git a/block/opal_proto.h b/block/opal_proto.h index b6e352cfe982..5e8df3245eb0 100644 --- a/block/opal_proto.h +++ b/block/opal_proto.h @@ -106,6 +106,7 @@ enum opal_uid { OPAL_ENTERPRISE_BANDMASTER0_UID, OPAL_ENTERPRISE_ERASEMASTER_UID, /* tables */ + OPAL_TABLE_TABLE, OPAL_LOCKINGRANGE_GLOBAL, OPAL_LOCKINGRANGE_ACE_RDLOCKED, OPAL_LOCKINGRANGE_ACE_WRLOCKED, @@ -160,6 +161,21 @@ enum opal_token { OPAL_STARTCOLUMN = 0x03, OPAL_ENDCOLUMN = 0x04, OPAL_VALUES = 0x01, + /* table table */ + OPAL_TABLE_UID = 0x00, + OPAL_TABLE_NAME = 0x01, + OPAL_TABLE_COMMON = 0x02, + OPAL_TABLE_TEMPLATE = 0x03, + OPAL_TABLE_KIND = 0x04, + OPAL_TABLE_COLUMN = 0x05, + OPAL_TABLE_COLUMNS = 0x06, + OPAL_TABLE_ROWS = 0x07, + OPAL_TABLE_ROWS_FREE = 0x08, + OPAL_TABLE_ROW_BYTES = 0x09, + OPAL_TABLE_LASTID = 0x0A, + OPAL_TABLE_MIN = 0x0B, + OPAL_TABLE_MAX = 0x0C, + /* authority table */ OPAL_PIN = 0x03, /* locking tokens */ diff --git a/block/sed-opal.c b/block/sed-opal.c index 5b7b23cb95a4..51f8034edbf7 100644 --- a/block/sed-opal.c +++ b/block/sed-opal.c @@ -136,6 +136,8 @@ static const u8 opaluid[][OPAL_UID_LENGTH] = { /* tables */ + [OPAL_TABLE_TABLE] + { 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01 }, [OPAL_LOCKINGRANGE_GLOBAL] = { 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 }, [OPAL_LOCKINGRANGE_ACE_RDLOCKED] = @@ -1107,6 +1109,29 @@ static int generic_get_column(struct opal_dev *dev, const u8 *table, return finalize_and_send(dev, parse_and_check_status); } +/* + * see TCG SAS 5.3.2.3 for a description of the available columns + * + * the result is provided in dev->resp->tok[4] + */ +static int generic_get_table_info(struct opal_dev *dev, enum opal_uid table, + u64 column) +{ + u8 uid[OPAL_UID_LENGTH]; + const unsigned int half = OPAL_UID_LENGTH/2; + + /* sed-opal UIDs can be split in two halfs: + * first: actual table index + * second: relative index in the table + * so we have to get the first half of the OPAL_TABLE_TABLE and use the + * first part of the target table as relative index into that table + */ + memcpy(uid, opaluid[OPAL_TABLE_TABLE], half); + memcpy(uid+half, opaluid[table], half); + + return generic_get_column(dev, uid, column); +} + static int gen_key(struct opal_dev *dev, void *data) { u8 uid[OPAL_UID_LENGTH]; -- 2.16.1