SED OPAL Library

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+/*
+ * Copyright ? 2016 Intel Corporation
+ *
+ * Authors:
+ *    Rafael Antognolli <rafael.antognolli at intel.com>
+ *    Scott  Bauer      <scott.bauer at 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.
+ */
+
+#ifndef _UAPI_SED_OPAL_H
+#define _UAPI_SED_OPAL_H
+
+#include <linux/types.h>
+
+#define OPAL_KEY_MAX 256
+
+enum opal_mbr {
+	OPAL_MBR_ENABLE,
+	OPAL_MBR_DISABLE,
+};
+
+enum opal_user {
+	OPAL_ADMIN1,
+	OPAL_USER1,
+	OPAL_USER2,
+	OPAL_USER3,
+	OPAL_USER4,
+	OPAL_USER5,
+	OPAL_USER6,
+	OPAL_USER7,
+	OPAL_USER8,
+	OPAL_USER9,
+};
+
+enum opal_lock_state {
+	OPAL_RO = 0x01, /* 0001 */
+	OPAL_RW = 0x02, /* 0010 */
+	OPAL_LK = 0x04, /* 0100 */
+};
+
+struct opal_key {
+	uint8_t	lr;
+	uint8_t	key_len;
+	char 	key[OPAL_KEY_MAX];
+};
+
+struct opal_session_info {
+	int sum;
+	struct opal_key opal_key;
+	enum opal_user who;
+};
+
+struct opal_user_lr_setup {
+	struct opal_session_info session;
+	size_t range_start;
+	size_t range_length;
+	int    RLE; /* Read Lock enabled */
+	int    WLE; /* Write Lock Enabled */
+};
+
+struct opal_lock_unlock {
+	struct opal_session_info session;
+	enum opal_lock_state l_state;
+};
+
+struct opal_new_pw {
+	struct opal_session_info session;
+
+	/* When we're not operating in sum, and we first set
+	 * passwords we need to set them via ADMIN authority.
+	 * After passwords are changed, we can set them via,
+	 * User authorities.
+	 * Because of this restriction we need to know about
+	 * Two different users. One in 'session' which we will use
+	 * to start the session and new_userr_pw as the user we're
+	 * chaning the pw for.
+	 */
+	struct opal_session_info new_user_pw;
+};
+
+struct opal_mbr_data {
+	u8 enable_disable;
+	struct opal_key key;
+};
+
+#define IOC_OPAL_SAVE		    _IOW('p', 220, struct opal_lock_unlock)
+#define IOC_OPAL_LOCK_UNLOCK	    _IOW('p', 221, struct opal_lock_unlock)
+#define IOC_OPAL_TAKE_OWNERSHIP	    _IOW('p', 222, struct opal_key)
+#define IOC_OPAL_ACTIVATE_LSP       _IOW('p', 223, struct opal_key)
+#define IOC_OPAL_SET_PW             _IOW('p', 224, struct opal_new_pw)
+#define IOC_OPAL_ACTIVATE_USR       _IOW('p', 225, struct opal_session_info)
+#define IOC_OPAL_REVERT_TPR         _IOW('p', 226, struct opal_key)
+#define IOC_OPAL_LR_SETUP           _IOW('p', 227, struct opal_user_lr_setup)
+#define IOC_OPAL_ADD_USR_TO_LR      _IOW('p', 228, struct opal_lock_unlock)
+#define IOC_OPAL_ENABLE_DISABLE_MBR _IOW('p', 229, struct opal_mbr_data)
+#define IOC_OPAL_ERASE_LR           _IOW('p', 230, struct opal_session_info)
+#define IOC_OPAL_SECURE_ERASE_LR    _IOW('p', 231, struct opal_session_info)
+
+#endif /* _UAPI_SED_OPAL_H */

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index 0000000..62adee6
@@ -0,0 +1,588 @@
+/*
+ * Copyright ? 2016 Intel Corporation
+ *
+ * Authors:
+ *    Rafael Antognolli <rafael.antognolli at intel.com>
+ *    Scott  Bauer      <scott.bauer at 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.
+ */
+
+#ifndef _OPAL_PROTO_H
+#define _OPAL_PROTO_H
+
+#define DTAERROR_NO_METHOD_STATUS 0x89
+#define GENERIC_HOST_SESSION_NUM 0x41
+
+#define TPER_SYNC_SUPPORTED BIT(0)
+
+#define TINY_ATOM_DATA_MASK GENMASK(5, 0)
+#define TINY_ATOM_SIGNED BIT(6)
+
+#define SHORT_ATOM_ID BIT(7)
+#define SHORT_ATOM_BYTESTRING BIT(5)
+#define SHORT_ATOM_SIGNED BIT(4)
+#define SHORT_ATOM_LEN_MASK GENMASK(3, 0)
+
+#define MEDIUM_ATOM_ID (BIT(7) | BIT(6))
+#define MEDIUM_ATOM_BYTESTRING BIT(4)
+#define MEDIUM_ATOM_SIGNED BIT(3)
+#define MEDIUM_ATOM_LEN_MASK GENMASK(2, 0)
+
+#define LONG_ATOM_ID (BIT(7) | BIT(6) | BIT(5))
+#define LONG_ATOM_BYTESTRING BIT(1)
+#define LONG_ATOM_SIGNED BIT(0)
+
+/* Derived from TCG Core spec 2.01 Section:
+ * 3.2.2.1
+ * Data Type
+ */
+#define TINY_ATOM_BYTE   0x7F
+#define SHORT_ATOM_BYTE  0xBF
+#define MEDIUM_ATOM_BYTE 0xDF
+#define LONG_ATOM_BYTE   0xE3
+
+#define OPAL_INVAL_PARAM 12
+#define OPAL_MANUFACTURED_INACTIVE 0x08
+#define OPAL_DISCOVERY_COMID 0x0001
+
+#define LOCKING_RANGE_NON_GLOBAL 0x03
+/*
+ * User IDs used in the TCG storage SSCs
+ * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Section: 6.3 Assigned UIDs
+ */
+static const u8 OPALUID[][8] = {
+	/* users */
+
+	/* session management  */
+	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff},
+	/* special "thisSP" syntax */
+	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
+	/* Administrative SP */
+	{ 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x01 },
+	/* Locking SP */
+	{ 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02 },
+	/* ENTERPRISE Locking SP  */
+	{ 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x00, 0x01 },
+	/* anybody */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x01 },
+	/* SID */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x06 },
+	/* ADMIN1 */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01 },
+	/* USER1 */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01 },
+	/* USER2 */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x02 },
+	/* PSID user */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0xff, 0x01 },
+	/* BandMaster 0 */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x80, 0x01 },
+	 /* EraseMaster */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x84, 0x01 },
+
+	/* tables */
+
+	/* Locking_GlobalRange */
+	{ 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 },
+	/* ACE_Locking_Range_Set_RdLocked UID */
+	{ 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 },
+	/* ACE_Locking_Range_Set_WrLocked UID */
+	{ 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 },
+	/* MBR Control */
+	{ 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 },
+	/* Shadow MBR */
+	{ 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 },
+	/* AUTHORITY_TABLE */
+	{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00},
+	/* C_PIN_TABLE */
+	{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00},
+	/* OPAL Locking Info */
+	{ 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 },
+	/* Enterprise Locking Info */
+	{ 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 },
+
+	/* C_PIN_TABLE object ID's */
+
+	/* C_PIN_MSID */
+	{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x84, 0x02},
+	/* C_PIN_SID */
+	{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x01},
+	 /* C_PIN_ADMIN1 */
+	{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x01, 0x00, 0x01},
+
+	/* half UID's (only first 4 bytes used) */
+
+	/* Half-UID ? Authority_object_ref */
+	{ 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff },
+	/* Half-UID ? Boolean ACE */
+	{ 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff },
+
+	/* special value for omitted optional parameter */
+
+	/* HEXFF for omitted */
+	{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+};
+#define OPAL_UID_LENGTH 8
+#define OPAL_MSID_KEYLEN 15
+#define OPAL_UID_LENGTH_HALF 4
+
+
+/* Enum to index OPALUID array */
+enum OPAL_UID {
+	/* users */
+	OPAL_SMUID_UID,
+	OPAL_THISSP_UID,
+	OPAL_ADMINSP_UID,
+	OPAL_LOCKINGSP_UID,
+	OPAL_ENTERPRISE_LOCKINGSP_UID,
+	OPAL_ANYBODY_UID,
+	OPAL_SID_UID,
+	OPAL_ADMIN1_UID,
+	OPAL_USER1_UID,
+	OPAL_USER2_UID,
+	OPAL_PSID_UID,
+	OPAL_ENTERPRISE_BANDMASTER0_UID,
+	OPAL_ENTERPRISE_ERASEMASTER_UID,
+	/* tables */
+	OPAL_LOCKINGRANGE_GLOBAL,
+	OPAL_LOCKINGRANGE_ACE_RDLOCKED,
+	OPAL_LOCKINGRANGE_ACE_WRLOCKED,
+	OPAL_MBRCONTROL,
+	OPAL_MBR,
+	OPAL_AUTHORITY_TABLE,
+	OPAL_C_PIN_TABLE,
+	OPAL_LOCKING_INFO_TABLE,
+	OPAL_ENTERPRISE_LOCKING_INFO_TABLE,
+	/* C_PIN_TABLE object ID's */
+	OPAL_C_PIN_MSID,
+	OPAL_C_PIN_SID,
+	OPAL_C_PIN_ADMIN1,
+	/* half UID's (only first 4 bytes used) */
+	OPAL_HALF_UID_AUTHORITY_OBJ_REF,
+	OPAL_HALF_UID_BOOLEAN_ACE,
+	/* omitted optional parameter */
+	OPAL_UID_HEXFF,
+};
+
+/*
+ * TCG Storage SSC Methods.
+ * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Section: 6.3 Assigned UIDs
+ */
+static const u8 OPALMETHOD[][8] = {
+	/* Properties */
+	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 },
+	/* STARTSESSION */
+	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 },
+	/* Revert */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 },
+	/* Activate */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 },
+	/* Enterprise Get */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 },
+	/* Enterprise Set */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 },
+	/* NEXT */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 },
+	/* Enterprise Authenticate */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c },
+	/* GetACL */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d },
+	/* GenKey */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 },
+	/* revertSP */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 },
+	/* Get */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 },
+	/* Set */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 },
+	/* Authenticate */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c },
+	/* Random */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 },
+	/* Erase */
+	{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 },
+};
+#define OPAL_METHOD_LENGTH 8
+
+/* Enum for indexing the OPALMETHOD array */
+enum OPAL_METHOD {
+	OPAL_PROPERTIES,
+	OPAL_STARTSESSION,
+	OPAL_REVERT,
+	OPAL_ACTIVATE,
+	OPAL_EGET,
+	OPAL_ESET,
+	OPAL_NEXT,
+	OPAL_EAUTHENTICATE,
+	OPAL_GETACL,
+	OPAL_GENKEY,
+	OPAL_REVERTSP,
+	OPAL_GET,
+	OPAL_SET,
+	OPAL_AUTHENTICATE,
+	OPAL_RANDOM,
+	OPAL_ERASE,
+};
+
+/*
+ * 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
+};
+
+enum OPAL_TOKEN {
+	/* Boolean */
+	OPAL_TRUE = 0x01,
+	OPAL_FALSE = 0x00,
+	OPAL_BOOLEAN_EXPR = 0x03,
+	/* cellblocks */
+	OPAL_TABLE = 0x00,
+	OPAL_STARTROW = 0x01,
+	OPAL_ENDROW = 0x02,
+	OPAL_STARTCOLUMN = 0x03,
+	OPAL_ENDCOLUMN = 0x04,
+	OPAL_VALUES = 0x01,
+	/* authority table */
+	OPAL_PIN = 0x03,
+	/* locking tokens */
+	OPAL_RANGESTART = 0x03,
+	OPAL_RANGELENGTH = 0x04,
+	OPAL_READLOCKENABLED = 0x05,
+	OPAL_WRITELOCKENABLED = 0x06,
+	OPAL_READLOCKED = 0x07,
+	OPAL_WRITELOCKED = 0x08,
+	OPAL_ACTIVEKEY = 0x0A,
+	/* locking info table */
+	OPAL_MAXRANGES = 0x04,
+	 /* mbr control */
+	OPAL_MBRENABLE = 0x01,
+	OPAL_MBRDONE = 0x02,
+	/* properties */
+	OPAL_HOSTPROPERTIES = 0x00,
+	/* atoms */
+	OPAL_STARTLIST = 0xf0,
+	OPAL_ENDLIST = 0xf1,
+	OPAL_STARTNAME = 0xf2,
+	OPAL_ENDNAME = 0xf3,
+	OPAL_CALL = 0xf8,
+	OPAL_ENDOFDATA = 0xf9,
+	OPAL_ENDOFSESSION = 0xfa,
+	OPAL_STARTTRANSACTON = 0xfb,
+	OPAL_ENDTRANSACTON = 0xfC,
+	OPAL_EMPTYATOM = 0xff,
+	OPAL_WHERE = 0x00,
+};
+
+/* Useful tiny atoms.
+ * Useful for table columns etc
+ */
+enum OPAL_TINY_ATOM {
+	OPAL_TINY_UINT_00 = 0x00,
+	OPAL_TINY_UINT_01 = 0x01,
+	OPAL_TINY_UINT_02 = 0x02,
+	OPAL_TINY_UINT_03 = 0x03,
+	OPAL_TINY_UINT_04 = 0x04,
+	OPAL_TINY_UINT_05 = 0x05,
+	OPAL_TINY_UINT_06 = 0x06,
+	OPAL_TINY_UINT_07 = 0x07,
+	OPAL_TINY_UINT_08 = 0x08,
+	OPAL_TINY_UINT_09 = 0x09,
+	OPAL_TINY_UINT_10 = 0x0a,
+	OPAL_TINY_UINT_11 = 0x0b,
+	OPAL_TINY_UINT_12 = 0x0c,
+	OPAL_TINY_UINT_13 = 0x0d,
+	OPAL_TINY_UINT_14 = 0x0e,
+	OPAL_TINY_UINT_15 = 0x0f,
+};
+
+enum OPAL_ATOM_WIDTH {
+	OPAL_WIDTH_TINY,
+	OPAL_WIDTH_SHORT,
+	OPAL_WIDTH_MEDIUM,
+	OPAL_WIDTH_LONG,
+	OPAL_WIDTH_TOKEN
+};
+
+/* Locking state for a locking range */
+enum OPAL_LOCKINGSTATE {
+	OPAL_LOCKING_READWRITE = 0x01,
+	OPAL_LOCKING_READONLY = 0x02,
+	OPAL_LOCKING_LOCKED = 0x03,
+};
+
+/*
+ * Structures to build and decode the Opal SSC messages
+ * fields that are NOT really numeric are defined as u8[] to
+ * help reduce the endianness issues
+ */
+
+/* Packets derived from:
+ * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
+ * Secion: 3.2.3 ComPackets, Packets & Subpackets
+ */
+
+/* Comm Packet (header) for transmissions. */
+struct opal_compacket {
+	u32 reserved0;
+	u8 extendedComID[4];
+	u32 outstandingData;
+	u32 minTransfer;
+	u32 length;
+};
+
+/* Packet structure. */
+struct opal_packet {
+	u32 tsn;
+	u32 hsn;
+	u32 seq_number;
+	u16 reserved0;
+	u16 ack_type;
+	u32 acknowledgment;
+	u32 length;
+};
+
+/* Data sub packet header */
+struct opal_data_subpacket {
+	u8 reserved0[6];
+	u16 kind;
+	u32 length;
+};
+
+/* header of a response */
+struct opal_header {
+	struct opal_compacket cp;
+	struct opal_packet pkt;
+	struct opal_data_subpacket subpkt;
+};
+
+#define FC_TPER       0x0001
+#define FC_LOCKING    0x0002
+#define FC_GEOMETRY   0x0003
+#define FC_ENTERPRISE 0x0100
+#define FC_DATASTORE  0x0202
+#define FC_SINGLEUSER 0x0201
+#define FC_OPALV100   0x0200
+#define FC_OPALV200   0x0203
+
+/*
+ * The Discovery 0 Header. As defined in
+ * Opal SSC Documentation
+ * Section: 3.3.5 Capability Discovery
+ */
+struct d0_header {
+	u32 length; /* the length of the header 48 in 2.00.100 */
+	u32 revision; /**< revision of the header 1 in 2.00.100 */
+	u32 reserved01;
+	u32 reserved02;
+	/*
+	 * the remainder of the structure is vendor specific and will not be
+	 * addressed now
+	 */
+	u8 ignored[32];
+};
+
+/*
+ * TPer Feature Descriptor. Contains flags indicating support for the
+ * TPer features described in the OPAL specification. The names match the
+ * OPAL terminology
+ *
+ * code == 0x001 in 2.00.100
+ */
+struct d0_tper_features {
+	/*
+	 * supported_features bits:
+	 * bit 7: reserved
+	 * bit 6: com ID management
+	 * bit 5: reserved
+	 * bit 4: streaming support
+	 * bit 3: buffer management
+	 * bit 2: ACK/NACK
+	 * bit 1: async
+	 * bit 0: sync
+	 */
+	u8 supported_features;
+	/*
+	 * bytes 5 through 15 are reserved, but we represent the first 3 as
+	 * u8 to keep the other two 32bits integers aligned.
+	 */
+	u8 reserved01[3];
+	u32 reserved02;
+	u32 reserved03;
+};
+
+/*
+ * Locking Feature Descriptor. Contains flags indicating support for the
+ * locking features described in the OPAL specification. The names match the
+ * OPAL terminology
+ *
+ * code == 0x0002 in 2.00.100
+ */
+struct d0_locking_features {
+	/*
+	 * supported_features bits:
+	 * bits 6-7: reserved
+	 * bit 5: MBR done
+	 * bit 4: MBR enabled
+	 * bit 3: media encryption
+	 * bit 2: locked
+	 * bit 1: locking enabled
+	 * bit 0: locking supported
+	 */
+	u8 supported_features;
+	/*
+	 * bytes 5 through 15 are reserved, but we represent the first 3 as
+	 * u8 to keep the other two 32bits integers aligned.
+	 */
+	u8 reserved01[3];
+	u32 reserved02;
+	u32 reserved03;
+};
+
+/*
+ * Geometry Feature Descriptor. Contains flags indicating support for the
+ * geometry features described in the OPAL specification. The names match the
+ * OPAL terminology
+ *
+ * code == 0x0003 in 2.00.100
+ */
+struct d0_geometry_features {
+	/*
+	 * skip 32 bits from header, needed to align the struct to 64 bits.
+	 */
+	u8 header[4];
+	/*
+	 * reserved01:
+	 * bits 1-6: reserved
+	 * bit 0: align
+	 */
+	u8 reserved01;
+	u8 reserved02[7];
+	u32 logical_block_size;
+	u64 alignment_granularity;
+	u64 lowest_aligned_lba;
+};
+
+/*
+ * Enterprise SSC Feature
+ *
+ * code == 0x0100
+ */
+struct d0_enterprise_ssc {
+	u16 baseComID;
+	u16 numComIDs;
+	/* range_crossing:
+	 * bits 1-6: reserved
+	 * bit 0: range crossing
+	 */
+	u8 range_crossing;
+	u8 reserved01;
+	u16 reserved02;
+	u32 reserved03;
+	u32 reserved04;
+};
+
+/*
+ * Opal V1 feature
+ *
+ * code == 0x0200
+ */
+struct d0_opal_v100 {
+	u16 baseComID;
+	u16 numComIDs;
+};
+
+/*
+ * Single User Mode feature
+ *
+ * code == 0x0201
+ */
+struct d0_single_user_mode {
+	u32 num_locking_objects;
+	/* reserved01:
+	 * bit 0: any
+	 * bit 1: all
+	 * bit 2: policy
+	 * bits 3-7: reserved
+	 */
+	u8 reserved01;
+	u8 reserved02;
+	u16 reserved03;
+	u32 reserved04;
+};
+
+/*
+ * Additonal Datastores feature
+ *
+ * code == 0x0202
+ */
+struct d0_datastore_table {
+	u16 reserved01;
+	u16 max_tables;
+	u32 max_size_tables;
+	u32 table_size_alignment;
+};
+
+/*
+ * OPAL 2.0 feature
+ *
+ * code == 0x0203
+ */
+struct d0_opal_v200 {
+	u16 baseComID;
+	u16 numComIDs;
+	/* range_crossing:
+	 * bits 1-6: reserved
+	 * bit 0: range crossing
+	 */
+	u8 range_crossing;
+	/* num_locking_admin_auth:
+	 * not aligned to 16 bits, so use two u8.
+	 * stored in big endian:
+	 * 0: MSB
+	 * 1: LSB
+	 */
+	u8 num_locking_admin_auth[2];
+	/* num_locking_user_auth:
+	 * not aligned to 16 bits, so use two u8.
+	 * stored in big endian:
+	 * 0: MSB
+	 * 1: LSB
+	 */
+	u8 num_locking_user_auth[2];
+	u8 initialPIN;
+	u8 revertedPIN;
+	u8 reserved01;
+	u32 reserved02;
+};
+
+/* Union of features used to parse the discovery 0 response */
+struct d0_features {
+	u16 code;
+	/*
+	 * r_version bits:
+	 * bits 4-7: version
+	 * bits 0-3: reserved
+	 */
+	u8 r_version;
+	u8 length;
+	u8 features[];
+};
+
+#endif /* _OPAL_PROTO_H */

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new file mode 100644
index 0000000..d17a84f
@@ -0,0 +1,164 @@
+/*
+ * Copyright ? 2016 Intel Corporation
+ *
+ * Authors:
+ *    Rafael Antognolli <rafael.antognolli at intel.com>
+ *    Scott  Bauer      <scott.bauer at 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.
+ */
+
+#include <linux/blkdev.h>
+#include <linux/sed.h>
+#include <linux/sed-opal.h>
+#include <asm/uaccess.h>
+
+static int sed_opal_save(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_lock_unlock lk_unlk;
+
+	if (copy_from_user(&lk_unlk, arg, sizeof(lk_unlk)))
+	    return -EFAULT;
+	return opal_save(sed_ctx, &lk_unlk);
+}
+
+static int sed_opal_lock_unlock(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_lock_unlock lk_unlk;
+
+	if (copy_from_user(&lk_unlk, arg, sizeof(lk_unlk)))
+		return -EFAULT;
+	return opal_lock_unlock(sed_ctx, &lk_unlk);
+}
+
+static int sed_opal_take_ownership(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_key opal_key;
+
+	if (copy_from_user(&opal_key, arg, sizeof(opal_key)))
+		return -EFAULT;
+	return opal_take_ownership(sed_ctx, &opal_key);
+}
+
+static int sed_opal_activate_lsp(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_key opal_key;
+
+	if (copy_from_user(&opal_key, arg, sizeof(opal_key)))
+		return -EFAULT;
+	return opal_activate_lsp(sed_ctx, &opal_key);
+}
+
+static int sed_opal_set_pw(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_new_pw opal_pw;
+	if (copy_from_user(&opal_pw, arg, sizeof(opal_pw)))
+		return -EFAULT;
+	return opal_set_new_pw(sed_ctx, &opal_pw);
+}
+
+static int sed_opal_activate_user(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_session_info session;
+	if (copy_from_user(&session, arg, sizeof(session)))
+		return -EFAULT;
+	return opal_activate_user(sed_ctx, &session);
+}
+
+static int sed_opal_reverttper(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_key opal_key;
+
+	if (copy_from_user(&opal_key, arg, sizeof(opal_key)))
+		return -EFAULT;
+	return opal_reverttper(sed_ctx, &opal_key);
+}
+
+static int sed_opal_setup_locking_range(struct sed_context *sed_ctx,
+					void __user *arg)
+{
+	struct opal_user_lr_setup lrs;
+	if (copy_from_user(&lrs, arg, sizeof(lrs)))
+		return -EFAULT;
+	return opal_setup_locking_range(sed_ctx, &lrs);
+}
+
+static int sed_opal_adduser_to_lr(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_lock_unlock lk_unlk;
+
+	if (copy_from_user(&lk_unlk, arg, sizeof(lk_unlk)))
+		return -EFAULT;
+	return opal_add_user_to_lr(sed_ctx, &lk_unlk);
+}
+
+static int sed_opal_do_mbr(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_mbr_data mbr;
+	if (copy_from_user(&mbr, arg, sizeof(mbr)))
+		return -EFAULT;
+	return opal_enable_disable_shadow_mbr(sed_ctx, &mbr);
+}
+
+static int sed_opal_erase_lr(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_session_info session;
+	if (copy_from_user(&session, arg, sizeof(session)))
+		return -EFAULT;
+	return opal_erase_locking_range(sed_ctx, &session);
+}
+
+static int sed_opal_secure_erase_lr(struct sed_context *sed_ctx, void __user *arg)
+{
+	struct opal_session_info session;
+	if (copy_from_user(&session, arg, sizeof(session)))
+		return -EFAULT;
+	return opal_secure_erase_locking_range(sed_ctx, &session);
+}
+
+int sed_ioctl(struct sed_context *sed_ctx, unsigned int cmd, unsigned long arg)
+{
+	void __user *ptr = (void __user *)arg;
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+	if (!sed_ctx->supported) {
+		pr_err("Not supported\n");
+		return -ENOTSUPP;
+	}
+
+	switch (cmd) {
+	case IOC_OPAL_SAVE:
+		return sed_opal_save(sed_ctx, ptr);
+	case IOC_OPAL_LOCK_UNLOCK:
+		return sed_opal_lock_unlock(sed_ctx, ptr);
+	case IOC_OPAL_TAKE_OWNERSHIP:
+		return sed_opal_take_ownership(sed_ctx, ptr);
+	case IOC_OPAL_ACTIVATE_LSP:
+		return sed_opal_activate_lsp(sed_ctx, ptr);
+	case IOC_OPAL_SET_PW:
+		return sed_opal_set_pw(sed_ctx, ptr);
+	case IOC_OPAL_ACTIVATE_USR:
+		return sed_opal_activate_user(sed_ctx, ptr);
+	case IOC_OPAL_REVERT_TPR:
+		return sed_opal_reverttper(sed_ctx, ptr);
+	case IOC_OPAL_LR_SETUP:
+		return sed_opal_setup_locking_range(sed_ctx, ptr);
+	case IOC_OPAL_ADD_USR_TO_LR:
+		return sed_opal_adduser_to_lr(sed_ctx, ptr);
+	case IOC_OPAL_ENABLE_DISABLE_MBR:
+		return sed_opal_do_mbr(sed_ctx, ptr);
+	case IOC_OPAL_ERASE_LR:
+		return sed_opal_erase_lr(sed_ctx, ptr);
+	case IOC_OPAL_SECURE_ERASE_LR:
+		return sed_opal_secure_erase_lr(sed_ctx, ptr);
+	}
+	return -ENOTTY;
+}
+EXPORT_SYMBOL_GPL(sed_ioctl);

108 lines not on this page · raw message

index bd53214..1f18c53 100644
@@ -19,6 +19,7 @@
 #include <linux/kref.h>
 #include <linux/blk-mq.h>
 #include <linux/lightnvm.h>
+#include <linux/sed.h>
 
 enum {
 	/*

@@ -188,6 +189,10 @@ struct nvme_ns {
 
 	u64 mode_select_num_blocks;
 	u32 mode_select_block_len;
+
+#ifdef CONFIG_BLK_SED_OPAL
+	struct sed_context sed_ctx;
+#endif
 };
 
 struct nvme_ctrl_ops {

@@ -256,7 +261,8 @@ static inline int nvme_error_status(u16 status)
 
 static inline bool nvme_req_needs_retry(struct request *req, u16 status)
 {
-	return !(status & NVME_SC_DNR || blk_noretry_request(req)) &&
+	return !(status & NVME_SC_DNR || status & NVME_SC_ACCESS_DENIED ||
+		 blk_noretry_request(req)) &&
 		(jiffies - req->start_time) < req->timeout &&
 		req->retries < nvme_max_retries;
 }

@@ -275,6 +281,7 @@ int nvme_init_identify(struct nvme_ctrl *ctrl);
 
 void nvme_queue_scan(struct nvme_ctrl *ctrl);
 void nvme_remove_namespaces(struct nvme_ctrl *ctrl);
+void nvme_unlock_from_suspend(struct nvme_ctrl *ctrl);
 
 #define NVME_NR_AERS	1
 void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,

index 3d21a15..dbf7818 100644
@@ -1764,6 +1764,7 @@ static void nvme_remove_dead_ctrl(struct nvme_dev *dev, int status)
 static void nvme_reset_work(struct work_struct *work)
 {
 	struct nvme_dev *dev = container_of(work, struct nvme_dev, reset_work);
+	bool was_suspend = !!(dev->ctrl.ctrl_config & NVME_CC_SHN_NORMAL);
 	int result = -ENODEV;
 
 	if (WARN_ON(dev->ctrl.state == NVME_CTRL_RESETTING))

@@ -1796,6 +1797,9 @@ static void nvme_reset_work(struct work_struct *work)
 	if (result)
 		goto out;
 
+	if (was_suspend)
+		nvme_unlock_from_suspend(&dev->ctrl);
+
 	result = nvme_setup_io_queues(dev);
 	if (result)
 		goto out;