block: Add Sed-opal library
This patch implements the necessary logic to bring an Opal enabled drive out of a factory-enabled into a working Opal state. This patch set also enables logic to save a password to be replayed during a resume from suspend. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Rafael Antognolli <Rafael.Antognolli@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
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11
MAINTAINERS
11
MAINTAINERS
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@ -11075,6 +11075,17 @@ L: linux-mmc@vger.kernel.org
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S: Maintained
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F: drivers/mmc/host/sdhci-spear.c
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SECURE ENCRYPTING DEVICE (SED) OPAL DRIVER
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M: Scott Bauer <scott.bauer@intel.com>
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M: Jonathan Derrick <jonathan.derrick@intel.com>
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M: Rafael Antognolli <rafael.antognolli@intel.com>
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L: linux-nvme@lists.infradead.org
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S: Supported
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F: block/sed*
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F: block/opal_proto.h
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F: include/linux/sed*
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F: include/uapi/linux/sed*
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SECURITY SUBSYSTEM
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M: James Morris <james.l.morris@oracle.com>
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M: "Serge E. Hallyn" <serge@hallyn.com>
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@ -159,6 +159,13 @@ config BLK_DEBUG_FS
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Unless you are building a kernel for a tiny system, you should
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say Y here.
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config BLK_SED_OPAL
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bool "Logic for interfacing with Opal enabled SEDs"
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---help---
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Builds Logic for interfacing with Opal enabled controllers.
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Enabling this option enables users to setup/unlock/lock
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Locking ranges for SED devices using the Opal protocol.
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menu "Partition Types"
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source "block/partitions/Kconfig"
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@ -27,3 +27,4 @@ obj-$(CONFIG_BLK_MQ_PCI) += blk-mq-pci.o
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obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o
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obj-$(CONFIG_BLK_WBT) += blk-wbt.o
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obj-$(CONFIG_BLK_DEBUG_FS) += blk-mq-debugfs.o
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obj-$(CONFIG_BLK_SED_OPAL) += sed-opal.o
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429
block/opal_proto.h
Normal file
429
block/opal_proto.h
Normal file
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@ -0,0 +1,429 @@
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/*
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* Copyright © 2016 Intel Corporation
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*
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* Authors:
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* Rafael Antognolli <rafael.antognolli@intel.com>
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* Scott Bauer <scott.bauer@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/types.h>
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#ifndef _OPAL_PROTO_H
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#define _OPAL_PROTO_H
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#define DTAERROR_NO_METHOD_STATUS 0x89
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#define GENERIC_HOST_SESSION_NUM 0x41
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#define TPER_SYNC_SUPPORTED 0x01
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#define TINY_ATOM_DATA_MASK 0x3F
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#define TINY_ATOM_SIGNED 0x40
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#define SHORT_ATOM_ID 0x80
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#define SHORT_ATOM_BYTESTRING 0x20
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#define SHORT_ATOM_SIGNED 0x10
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#define SHORT_ATOM_LEN_MASK 0xF
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#define MEDIUM_ATOM_ID 0xC0
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#define MEDIUM_ATOM_BYTESTRING 0x10
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#define MEDIUM_ATOM_SIGNED 0x8
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#define MEDIUM_ATOM_LEN_MASK 0x7
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#define LONG_ATOM_ID 0xe0
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#define LONG_ATOM_BYTESTRING 0x2
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#define LONG_ATOM_SIGNED 0x1
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/* Derived from TCG Core spec 2.01 Section:
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* 3.2.2.1
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* Data Type
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*/
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#define TINY_ATOM_BYTE 0x7F
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#define SHORT_ATOM_BYTE 0xBF
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#define MEDIUM_ATOM_BYTE 0xDF
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#define LONG_ATOM_BYTE 0xE3
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#define OPAL_INVAL_PARAM 12
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#define OPAL_MANUFACTURED_INACTIVE 0x08
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#define OPAL_DISCOVERY_COMID 0x0001
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#define LOCKING_RANGE_NON_GLOBAL 0x03
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/*
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* User IDs used in the TCG storage SSCs
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* Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
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* Section: 6.3 Assigned UIDs
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*/
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#define OPAL_UID_LENGTH 8
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#define OPAL_METHOD_LENGTH 8
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#define OPAL_MSID_KEYLEN 15
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#define OPAL_UID_LENGTH_HALF 4
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/* Enum to index OPALUID array */
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enum opal_uid {
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/* users */
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OPAL_SMUID_UID,
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OPAL_THISSP_UID,
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OPAL_ADMINSP_UID,
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OPAL_LOCKINGSP_UID,
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OPAL_ENTERPRISE_LOCKINGSP_UID,
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OPAL_ANYBODY_UID,
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OPAL_SID_UID,
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OPAL_ADMIN1_UID,
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OPAL_USER1_UID,
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OPAL_USER2_UID,
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OPAL_PSID_UID,
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OPAL_ENTERPRISE_BANDMASTER0_UID,
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OPAL_ENTERPRISE_ERASEMASTER_UID,
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/* tables */
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OPAL_LOCKINGRANGE_GLOBAL,
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OPAL_LOCKINGRANGE_ACE_RDLOCKED,
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OPAL_LOCKINGRANGE_ACE_WRLOCKED,
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OPAL_MBRCONTROL,
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OPAL_MBR,
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OPAL_AUTHORITY_TABLE,
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OPAL_C_PIN_TABLE,
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OPAL_LOCKING_INFO_TABLE,
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OPAL_ENTERPRISE_LOCKING_INFO_TABLE,
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/* C_PIN_TABLE object ID's */
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OPAL_C_PIN_MSID,
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OPAL_C_PIN_SID,
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OPAL_C_PIN_ADMIN1,
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/* half UID's (only first 4 bytes used) */
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OPAL_HALF_UID_AUTHORITY_OBJ_REF,
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OPAL_HALF_UID_BOOLEAN_ACE,
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/* omitted optional parameter */
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OPAL_UID_HEXFF,
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};
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#define OPAL_METHOD_LENGTH 8
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/* Enum for indexing the OPALMETHOD array */
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enum opal_method {
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OPAL_PROPERTIES,
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OPAL_STARTSESSION,
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OPAL_REVERT,
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OPAL_ACTIVATE,
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OPAL_EGET,
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OPAL_ESET,
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OPAL_NEXT,
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OPAL_EAUTHENTICATE,
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OPAL_GETACL,
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OPAL_GENKEY,
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OPAL_REVERTSP,
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OPAL_GET,
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OPAL_SET,
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OPAL_AUTHENTICATE,
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OPAL_RANDOM,
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OPAL_ERASE,
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};
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enum opal_token {
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/* Boolean */
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OPAL_TRUE = 0x01,
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OPAL_FALSE = 0x00,
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OPAL_BOOLEAN_EXPR = 0x03,
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/* cellblocks */
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OPAL_TABLE = 0x00,
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OPAL_STARTROW = 0x01,
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OPAL_ENDROW = 0x02,
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OPAL_STARTCOLUMN = 0x03,
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OPAL_ENDCOLUMN = 0x04,
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OPAL_VALUES = 0x01,
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/* authority table */
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OPAL_PIN = 0x03,
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/* locking tokens */
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OPAL_RANGESTART = 0x03,
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OPAL_RANGELENGTH = 0x04,
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OPAL_READLOCKENABLED = 0x05,
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OPAL_WRITELOCKENABLED = 0x06,
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OPAL_READLOCKED = 0x07,
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OPAL_WRITELOCKED = 0x08,
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OPAL_ACTIVEKEY = 0x0A,
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/* locking info table */
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OPAL_MAXRANGES = 0x04,
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/* mbr control */
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OPAL_MBRENABLE = 0x01,
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OPAL_MBRDONE = 0x02,
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/* properties */
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OPAL_HOSTPROPERTIES = 0x00,
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/* atoms */
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OPAL_STARTLIST = 0xf0,
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OPAL_ENDLIST = 0xf1,
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OPAL_STARTNAME = 0xf2,
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OPAL_ENDNAME = 0xf3,
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OPAL_CALL = 0xf8,
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OPAL_ENDOFDATA = 0xf9,
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OPAL_ENDOFSESSION = 0xfa,
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OPAL_STARTTRANSACTON = 0xfb,
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OPAL_ENDTRANSACTON = 0xfC,
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OPAL_EMPTYATOM = 0xff,
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OPAL_WHERE = 0x00,
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};
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/* Locking state for a locking range */
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enum opal_lockingstate {
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OPAL_LOCKING_READWRITE = 0x01,
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OPAL_LOCKING_READONLY = 0x02,
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OPAL_LOCKING_LOCKED = 0x03,
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};
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/* Packets derived from:
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* TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
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* Secion: 3.2.3 ComPackets, Packets & Subpackets
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*/
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/* Comm Packet (header) for transmissions. */
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struct opal_compacket {
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__be32 reserved0;
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u8 extendedComID[4];
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__be32 outstandingData;
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__be32 minTransfer;
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__be32 length;
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};
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/* Packet structure. */
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struct opal_packet {
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__be32 tsn;
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__be32 hsn;
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__be32 seq_number;
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__be16 reserved0;
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__be16 ack_type;
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__be32 acknowledgment;
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__be32 length;
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};
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/* Data sub packet header */
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struct opal_data_subpacket {
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u8 reserved0[6];
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__be16 kind;
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__be32 length;
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};
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/* header of a response */
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struct opal_header {
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struct opal_compacket cp;
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struct opal_packet pkt;
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struct opal_data_subpacket subpkt;
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};
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#define FC_TPER 0x0001
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#define FC_LOCKING 0x0002
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#define FC_GEOMETRY 0x0003
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#define FC_ENTERPRISE 0x0100
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#define FC_DATASTORE 0x0202
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#define FC_SINGLEUSER 0x0201
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#define FC_OPALV100 0x0200
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#define FC_OPALV200 0x0203
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/*
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* The Discovery 0 Header. As defined in
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* Opal SSC Documentation
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* Section: 3.3.5 Capability Discovery
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*/
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struct d0_header {
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__be32 length; /* the length of the header 48 in 2.00.100 */
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__be32 revision; /**< revision of the header 1 in 2.00.100 */
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__be32 reserved01;
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__be32 reserved02;
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/*
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* the remainder of the structure is vendor specific and will not be
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* addressed now
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*/
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u8 ignored[32];
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};
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/*
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* TPer Feature Descriptor. Contains flags indicating support for the
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* TPer features described in the OPAL specification. The names match the
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* OPAL terminology
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*
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* code == 0x001 in 2.00.100
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*/
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struct d0_tper_features {
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/*
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* supported_features bits:
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* bit 7: reserved
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* bit 6: com ID management
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* bit 5: reserved
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* bit 4: streaming support
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* bit 3: buffer management
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* bit 2: ACK/NACK
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* bit 1: async
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* bit 0: sync
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*/
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u8 supported_features;
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/*
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* bytes 5 through 15 are reserved, but we represent the first 3 as
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* u8 to keep the other two 32bits integers aligned.
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*/
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u8 reserved01[3];
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__be32 reserved02;
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__be32 reserved03;
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};
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/*
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* Locking Feature Descriptor. Contains flags indicating support for the
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* locking features described in the OPAL specification. The names match the
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* OPAL terminology
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*
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* code == 0x0002 in 2.00.100
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*/
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struct d0_locking_features {
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/*
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* supported_features bits:
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* bits 6-7: reserved
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* bit 5: MBR done
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* bit 4: MBR enabled
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* bit 3: media encryption
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* bit 2: locked
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* bit 1: locking enabled
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* bit 0: locking supported
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*/
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u8 supported_features;
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/*
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* bytes 5 through 15 are reserved, but we represent the first 3 as
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* u8 to keep the other two 32bits integers aligned.
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*/
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u8 reserved01[3];
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__be32 reserved02;
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__be32 reserved03;
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};
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/*
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* Geometry Feature Descriptor. Contains flags indicating support for the
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* geometry features described in the OPAL specification. The names match the
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* OPAL terminology
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*
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* code == 0x0003 in 2.00.100
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*/
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struct d0_geometry_features {
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/*
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* skip 32 bits from header, needed to align the struct to 64 bits.
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*/
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u8 header[4];
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/*
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* reserved01:
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* bits 1-6: reserved
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* bit 0: align
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*/
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u8 reserved01;
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u8 reserved02[7];
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__be32 logical_block_size;
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__be64 alignment_granularity;
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__be64 lowest_aligned_lba;
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};
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/*
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* Enterprise SSC Feature
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*
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* code == 0x0100
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*/
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struct d0_enterprise_ssc {
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__be16 baseComID;
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__be16 numComIDs;
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/* range_crossing:
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* bits 1-6: reserved
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* bit 0: range crossing
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*/
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u8 range_crossing;
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u8 reserved01;
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__be16 reserved02;
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__be32 reserved03;
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__be32 reserved04;
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};
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/*
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* Opal V1 feature
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*
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* code == 0x0200
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*/
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struct d0_opal_v100 {
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__be16 baseComID;
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__be16 numComIDs;
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};
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/*
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* Single User Mode feature
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*
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* code == 0x0201
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*/
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struct d0_single_user_mode {
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__be32 num_locking_objects;
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/* reserved01:
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* bit 0: any
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* bit 1: all
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* bit 2: policy
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* bits 3-7: reserved
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*/
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u8 reserved01;
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u8 reserved02;
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__be16 reserved03;
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__be32 reserved04;
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};
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/*
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* Additonal Datastores feature
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*
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* code == 0x0202
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*/
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struct d0_datastore_table {
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__be16 reserved01;
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__be16 max_tables;
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__be32 max_size_tables;
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__be32 table_size_alignment;
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};
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/*
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* OPAL 2.0 feature
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*
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* code == 0x0203
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*/
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struct d0_opal_v200 {
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__be16 baseComID;
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__be16 numComIDs;
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/* range_crossing:
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* bits 1-6: reserved
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* bit 0: range crossing
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*/
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u8 range_crossing;
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/* num_locking_admin_auth:
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* not aligned to 16 bits, so use two u8.
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* stored in big endian:
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* 0: MSB
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* 1: LSB
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*/
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u8 num_locking_admin_auth[2];
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/* num_locking_user_auth:
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* not aligned to 16 bits, so use two u8.
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* stored in big endian:
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* 0: MSB
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* 1: LSB
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*/
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u8 num_locking_user_auth[2];
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u8 initialPIN;
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u8 revertedPIN;
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u8 reserved01;
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__be32 reserved02;
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};
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/* Union of features used to parse the discovery 0 response */
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struct d0_features {
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__be16 code;
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/*
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* r_version bits:
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* bits 4-7: version
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* bits 0-3: reserved
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*/
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u8 r_version;
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u8 length;
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u8 features[];
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};
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#endif /* _OPAL_PROTO_H */
|
2448
block/sed-opal.c
Normal file
2448
block/sed-opal.c
Normal file
File diff suppressed because it is too large
Load diff
178
include/linux/sed-opal.h
Normal file
178
include/linux/sed-opal.h
Normal file
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@ -0,0 +1,178 @@
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/*
|
||||
* Copyright © 2016 Intel Corporation
|
||||
*
|
||||
* Authors:
|
||||
* Rafael Antognolli <rafael.antognolli@intel.com>
|
||||
* Scott Bauer <scott.bauer@intel.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope 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.
|
||||
*/
|
||||
|
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#ifndef LINUX_OPAL_H
|
||||
#define LINUX_OPAL_H
|
||||
|
||||
#include <uapi/linux/sed-opal.h>
|
||||
#include <linux/kernel.h>
|
||||
|
||||
/*
|
||||
* These constant values come from:
|
||||
* SPC-4 section
|
||||
* 6.30 SECURITY PROTOCOL IN command / table 265.
|
||||
*/
|
||||
enum {
|
||||
TCG_SECP_00 = 0,
|
||||
TCG_SECP_01,
|
||||
};
|
||||
struct opal_dev;
|
||||
|
||||
#define IO_BUFFER_LENGTH 2048
|
||||
#define MAX_TOKS 64
|
||||
|
||||
typedef int (*opal_step)(struct opal_dev *dev);
|
||||
typedef int (sec_send_recv)(struct opal_dev *ctx, u16 spsp, u8 secp,
|
||||
void *buffer, size_t len, bool send);
|
||||
|
||||
|
||||
enum opal_atom_width {
|
||||
OPAL_WIDTH_TINY,
|
||||
OPAL_WIDTH_SHORT,
|
||||
OPAL_WIDTH_MEDIUM,
|
||||
OPAL_WIDTH_LONG,
|
||||
OPAL_WIDTH_TOKEN
|
||||
};
|
||||
|
||||
/*
|
||||
* Token defs derived from:
|
||||
* TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
|
||||
* 3.2.2 Data Stream Encoding
|
||||
*/
|
||||
enum opal_response_token {
|
||||
OPAL_DTA_TOKENID_BYTESTRING = 0xe0,
|
||||
OPAL_DTA_TOKENID_SINT = 0xe1,
|
||||
OPAL_DTA_TOKENID_UINT = 0xe2,
|
||||
OPAL_DTA_TOKENID_TOKEN = 0xe3, /* actual token is returned */
|
||||
OPAL_DTA_TOKENID_INVALID = 0X0
|
||||
};
|
||||
|
||||
/*
|
||||
* On the parsed response, we don't store again the toks that are already
|
||||
* stored in the response buffer. Instead, for each token, we just store a
|
||||
* pointer to the position in the buffer where the token starts, and the size
|
||||
* of the token in bytes.
|
||||
*/
|
||||
struct opal_resp_tok {
|
||||
const u8 *pos;
|
||||
size_t len;
|
||||
enum opal_response_token type;
|
||||
enum opal_atom_width width;
|
||||
union {
|
||||
u64 u;
|
||||
s64 s;
|
||||
} stored;
|
||||
};
|
||||
|
||||
/*
|
||||
* From the response header it's not possible to know how many tokens there are
|
||||
* on the payload. So we hardcode that the maximum will be MAX_TOKS, and later
|
||||
* if we start dealing with messages that have more than that, we can increase
|
||||
* this number. This is done to avoid having to make two passes through the
|
||||
* response, the first one counting how many tokens we have and the second one
|
||||
* actually storing the positions.
|
||||
*/
|
||||
struct parsed_resp {
|
||||
int num;
|
||||
struct opal_resp_tok toks[MAX_TOKS];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct opal_dev - The structure representing a OPAL enabled SED.
|
||||
* @supported: Whether or not OPAL is supported on this controller.
|
||||
* @send_recv: The combined sec_send/sec_recv function pointer.
|
||||
* @opal_step: A series of opal methods that are necessary to complete a command.
|
||||
* @func_data: An array of parameters for the opal methods above.
|
||||
* @state: Describes the current opal_step we're working on.
|
||||
* @dev_lock: Locks the entire opal_dev structure.
|
||||
* @parsed: Parsed response from controller.
|
||||
* @prev_data: Data returned from a method to the controller.
|
||||
* @unlk_lst: A list of Locking ranges to unlock on this device during a resume.
|
||||
*/
|
||||
struct opal_dev {
|
||||
bool initialized;
|
||||
bool supported;
|
||||
sec_send_recv *send_recv;
|
||||
|
||||
const opal_step *funcs;
|
||||
void **func_data;
|
||||
int state;
|
||||
struct mutex dev_lock;
|
||||
u16 comid;
|
||||
u32 hsn;
|
||||
u32 tsn;
|
||||
u64 align;
|
||||
u64 lowest_lba;
|
||||
|
||||
size_t pos;
|
||||
u8 cmd[IO_BUFFER_LENGTH];
|
||||
u8 resp[IO_BUFFER_LENGTH];
|
||||
|
||||
struct parsed_resp parsed;
|
||||
size_t prev_d_len;
|
||||
void *prev_data;
|
||||
|
||||
struct list_head unlk_lst;
|
||||
};
|
||||
|
||||
#ifdef CONFIG_BLK_SED_OPAL
|
||||
bool opal_unlock_from_suspend(struct opal_dev *dev);
|
||||
void init_opal_dev(struct opal_dev *opal_dev, sec_send_recv *send_recv);
|
||||
int sed_ioctl(struct opal_dev *dev, unsigned int cmd, unsigned long ptr);
|
||||
|
||||
static inline bool is_sed_ioctl(unsigned int cmd)
|
||||
{
|
||||
switch (cmd) {
|
||||
case IOC_OPAL_SAVE:
|
||||
case IOC_OPAL_LOCK_UNLOCK:
|
||||
case IOC_OPAL_TAKE_OWNERSHIP:
|
||||
case IOC_OPAL_ACTIVATE_LSP:
|
||||
case IOC_OPAL_SET_PW:
|
||||
case IOC_OPAL_ACTIVATE_USR:
|
||||
case IOC_OPAL_REVERT_TPR:
|
||||
case IOC_OPAL_LR_SETUP:
|
||||
case IOC_OPAL_ADD_USR_TO_LR:
|
||||
case IOC_OPAL_ENABLE_DISABLE_MBR:
|
||||
case IOC_OPAL_ERASE_LR:
|
||||
case IOC_OPAL_SECURE_ERASE_LR:
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
#else
|
||||
static inline bool is_sed_ioctl(unsigned int cmd)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
|
||||
unsigned long ptr)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
static inline void init_opal_dev(struct opal_dev *opal_dev,
|
||||
sec_send_recv *send_recv)
|
||||
{
|
||||
opal_dev->supported = false;
|
||||
opal_dev->initialized = true;
|
||||
}
|
||||
#endif /* CONFIG_BLK_SED_OPAL */
|
||||
#endif /* LINUX_OPAL_H */
|
Loading…
Reference in a new issue