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90d624af2e
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmU/vjMQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpqVcEADaNf6X7LVKKrdQ4sA38dBZYGM3kNz0SCYV vkjQAs0Fyylbu6EhYOLO/R+UCtpytLlnbr4NmFDbhaEG4OJcwoDLDxpMQ7Gda58v 4RBXAiIlhZX3g99/ebvtNtVEvQa9gF4h8k2n/gKsG+PoS+cbkKAI0Na2duI1d/pL B5nQ31VAHhsyjUv1nIPLrQS6lsL7ZTFvH8L6FLcEVM03poy8PE2H6kN7WoyXwtfo LN3KK0Nu7B0Wx2nDx0ffisxcDhbChGs7G2c9ndPTvxg6/4HW+2XSeNUwTxXYpyi2 ZCD+AHCzMB/w6GNNWFw4xfau5RrZ4c4HdBnmyR6+fPb1u6nGzjgquzFyLyLu5MkA n/NvOHP1Cbd3QIXG1TnBi2kDPkQ5FOIAjFSe9IZAGT4dUkZ63wBoDil1jCgMLuCR C+AFPLhiIg3cFvu9+fdZ6BkCuZYESd3YboBtRKeMionEexrPTKt4QWqIoVJgd/Y7 nwvR8jkIBpVgQZT8ocYqhSycLCYV2lGqEBSq4rlRiEb/W1G9Awmg8UTGuUYFSC1G vGPCwhGi+SBsbo84aPCfSdUkKDlruNWP0GwIFxo0hsiTOoHP+7UWeenJ2Jw5lNPt p0Y72TEDDaSMlE4cJx6IWdWM/B+OWzCyRyl3uVcy7bToEsVhIbBSSth7+sh2n7Cy WgH1lrtMzg== =sace -----END PGP SIGNATURE----- Merge tag 'for-6.7/block-2023-10-30' of git://git.kernel.dk/linux Pull block updates from Jens Axboe: - Improvements to the queue_rqs() support, and adding null_blk support for that as well (Chengming) - Series improving badblocks support (Coly) - Key store support for sed-opal (Greg) - IBM partition string handling improvements (Jan) - Make number of ublk devices supported configurable (Mike) - Cancelation improvements for ublk (Ming) - MD pull requests via Song: - Handle timeout in md-cluster, by Denis Plotnikov - Cleanup pers->prepare_suspend, by Yu Kuai - Rewrite mddev_suspend(), by Yu Kuai - Simplify md_seq_ops, by Yu Kuai - Reduce unnecessary locking array_state_store(), by Mariusz Tkaczyk - Make rdev add/remove independent from daemon thread, by Yu Kuai - Refactor code around quiesce() and mddev_suspend(), by Yu Kuai - NVMe pull request via Keith: - nvme-auth updates (Mark) - nvme-tcp tls (Hannes) - nvme-fc annotaions (Kees) - Misc cleanups and improvements (Jiapeng, Joel) * tag 'for-6.7/block-2023-10-30' of git://git.kernel.dk/linux: (95 commits) block: ublk_drv: Remove unused function md: cleanup pers->prepare_suspend() nvme-auth: allow mixing of secret and hash lengths nvme-auth: use transformed key size to create resp nvme-auth: alloc nvme_dhchap_key as single buffer nvmet-tcp: use 'spin_lock_bh' for state_lock() powerpc/pseries: PLPKS SED Opal keystore support block: sed-opal: keystore access for SED Opal keys block:sed-opal: SED Opal keystore ublk: simplify aborting request ublk: replace monitor with cancelable uring_cmd ublk: quiesce request queue when aborting queue ublk: rename mm_lock as lock ublk: move ublk_cancel_dev() out of ub->mutex ublk: make sure io cmd handled in submitter task context ublk: don't get ublk device reference in ublk_abort_queue() ublk: Make ublks_max configurable ublk: Limit dev_id/ub_number values md-cluster: check for timeout while a new disk adding nvme: rework NVME_AUTH Kconfig selection ...
3323 lines
77 KiB
C
3323 lines
77 KiB
C
// SPDX-License-Identifier: GPL-2.0
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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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* Scott Bauer <scott.bauer@intel.com>
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* Rafael Antognolli <rafael.antognolli@intel.com>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ":OPAL: " fmt
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/blkdev.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include <uapi/linux/sed-opal.h>
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#include <linux/sed-opal.h>
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#include <linux/sed-opal-key.h>
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#include <linux/string.h>
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#include <linux/kdev_t.h>
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#include <linux/key.h>
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#include <linux/key-type.h>
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#include <keys/user-type.h>
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#include "opal_proto.h"
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#define IO_BUFFER_LENGTH 2048
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#define MAX_TOKS 64
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/* Number of bytes needed by cmd_finalize. */
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#define CMD_FINALIZE_BYTES_NEEDED 7
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static struct key *sed_opal_keyring;
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struct opal_step {
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int (*fn)(struct opal_dev *dev, void *data);
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void *data;
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};
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typedef int (cont_fn)(struct opal_dev *dev);
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enum opal_atom_width {
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OPAL_WIDTH_TINY,
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OPAL_WIDTH_SHORT,
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OPAL_WIDTH_MEDIUM,
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OPAL_WIDTH_LONG,
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OPAL_WIDTH_TOKEN
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};
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/*
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* On the parsed response, we don't store again the toks that are already
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* stored in the response buffer. Instead, for each token, we just store a
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* pointer to the position in the buffer where the token starts, and the size
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* of the token in bytes.
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*/
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struct opal_resp_tok {
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const u8 *pos;
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size_t len;
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enum opal_response_token type;
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enum opal_atom_width width;
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union {
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u64 u;
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s64 s;
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} stored;
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};
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/*
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* From the response header it's not possible to know how many tokens there are
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* on the payload. So we hardcode that the maximum will be MAX_TOKS, and later
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* if we start dealing with messages that have more than that, we can increase
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* this number. This is done to avoid having to make two passes through the
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* response, the first one counting how many tokens we have and the second one
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* actually storing the positions.
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*/
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struct parsed_resp {
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int num;
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struct opal_resp_tok toks[MAX_TOKS];
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};
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struct opal_dev {
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u32 flags;
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void *data;
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sec_send_recv *send_recv;
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struct mutex dev_lock;
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u16 comid;
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u32 hsn;
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u32 tsn;
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u64 align; /* alignment granularity */
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u64 lowest_lba;
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u32 logical_block_size;
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u8 align_required; /* ALIGN: 0 or 1 */
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size_t pos;
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u8 *cmd;
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u8 *resp;
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struct parsed_resp parsed;
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size_t prev_d_len;
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void *prev_data;
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struct list_head unlk_lst;
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};
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static const u8 opaluid[][OPAL_UID_LENGTH] = {
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/* users */
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[OPAL_SMUID_UID] =
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff },
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[OPAL_THISSP_UID] =
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
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[OPAL_ADMINSP_UID] =
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{ 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x01 },
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[OPAL_LOCKINGSP_UID] =
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{ 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02 },
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[OPAL_ENTERPRISE_LOCKINGSP_UID] =
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{ 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x00, 0x01 },
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[OPAL_ANYBODY_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x01 },
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[OPAL_SID_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x06 },
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[OPAL_ADMIN1_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01 },
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[OPAL_USER1_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01 },
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[OPAL_USER2_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x02 },
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[OPAL_PSID_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0xff, 0x01 },
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[OPAL_ENTERPRISE_BANDMASTER0_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x80, 0x01 },
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[OPAL_ENTERPRISE_ERASEMASTER_UID] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x84, 0x01 },
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/* tables */
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[OPAL_TABLE_TABLE] =
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{ 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01 },
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[OPAL_LOCKINGRANGE_GLOBAL] =
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{ 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 },
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[OPAL_LOCKINGRANGE_ACE_START_TO_KEY] =
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{ 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xD0, 0x01 },
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[OPAL_LOCKINGRANGE_ACE_RDLOCKED] =
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{ 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 },
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[OPAL_LOCKINGRANGE_ACE_WRLOCKED] =
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{ 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 },
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[OPAL_MBRCONTROL] =
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{ 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 },
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[OPAL_MBR] =
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{ 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 },
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[OPAL_AUTHORITY_TABLE] =
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{ 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00},
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[OPAL_C_PIN_TABLE] =
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{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00},
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[OPAL_LOCKING_INFO_TABLE] =
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{ 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 },
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[OPAL_ENTERPRISE_LOCKING_INFO_TABLE] =
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{ 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 },
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[OPAL_DATASTORE] =
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{ 0x00, 0x00, 0x10, 0x01, 0x00, 0x00, 0x00, 0x00 },
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/* C_PIN_TABLE object ID's */
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[OPAL_C_PIN_MSID] =
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{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x84, 0x02},
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[OPAL_C_PIN_SID] =
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{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x01},
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[OPAL_C_PIN_ADMIN1] =
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{ 0x00, 0x00, 0x00, 0x0B, 0x00, 0x01, 0x00, 0x01},
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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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{ 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff },
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[OPAL_HALF_UID_BOOLEAN_ACE] =
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{ 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff },
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/* special value for omitted optional parameter */
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[OPAL_UID_HEXFF] =
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{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
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};
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/*
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* TCG Storage SSC Methods.
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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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static const u8 opalmethod[][OPAL_METHOD_LENGTH] = {
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[OPAL_PROPERTIES] =
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 },
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[OPAL_STARTSESSION] =
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{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 },
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[OPAL_REVERT] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 },
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[OPAL_ACTIVATE] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 },
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[OPAL_EGET] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 },
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[OPAL_ESET] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 },
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[OPAL_NEXT] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 },
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[OPAL_EAUTHENTICATE] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c },
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[OPAL_GETACL] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d },
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[OPAL_GENKEY] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 },
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[OPAL_REVERTSP] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 },
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[OPAL_GET] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 },
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[OPAL_SET] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 },
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[OPAL_AUTHENTICATE] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c },
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[OPAL_RANDOM] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 },
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[OPAL_ERASE] =
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{ 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 },
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};
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static int end_opal_session_error(struct opal_dev *dev);
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static int opal_discovery0_step(struct opal_dev *dev);
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struct opal_suspend_data {
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struct opal_lock_unlock unlk;
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u8 lr;
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struct list_head node;
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};
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/*
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* Derived from:
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* TCG_Storage_Architecture_Core_Spec_v2.01_r1.00
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* Section: 5.1.5 Method Status Codes
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*/
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static const char * const opal_errors[] = {
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"Success",
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"Not Authorized",
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"Unknown Error",
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"SP Busy",
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"SP Failed",
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"SP Disabled",
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"SP Frozen",
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"No Sessions Available",
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"Uniqueness Conflict",
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"Insufficient Space",
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"Insufficient Rows",
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"Invalid Function",
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"Invalid Parameter",
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"Invalid Reference",
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"Unknown Error",
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"TPER Malfunction",
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"Transaction Failure",
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"Response Overflow",
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"Authority Locked Out",
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};
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static const char *opal_error_to_human(int error)
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{
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if (error == 0x3f)
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return "Failed";
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if (error >= ARRAY_SIZE(opal_errors) || error < 0)
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return "Unknown Error";
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return opal_errors[error];
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}
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static void print_buffer(const u8 *ptr, u32 length)
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{
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#ifdef DEBUG
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print_hex_dump_bytes("OPAL: ", DUMP_PREFIX_OFFSET, ptr, length);
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pr_debug("\n");
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#endif
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}
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/*
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* Allocate/update a SED Opal key and add it to the SED Opal keyring.
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*/
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static int update_sed_opal_key(const char *desc, u_char *key_data, int keylen)
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{
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key_ref_t kr;
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if (!sed_opal_keyring)
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return -ENOKEY;
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kr = key_create_or_update(make_key_ref(sed_opal_keyring, true), "user",
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desc, (const void *)key_data, keylen,
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KEY_USR_VIEW | KEY_USR_SEARCH | KEY_USR_WRITE,
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KEY_ALLOC_NOT_IN_QUOTA | KEY_ALLOC_BUILT_IN |
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KEY_ALLOC_BYPASS_RESTRICTION);
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if (IS_ERR(kr)) {
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pr_err("Error adding SED key (%ld)\n", PTR_ERR(kr));
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return PTR_ERR(kr);
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}
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return 0;
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}
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|
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/*
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* Read a SED Opal key from the SED Opal keyring.
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*/
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static int read_sed_opal_key(const char *key_name, u_char *buffer, int buflen)
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{
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int ret;
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key_ref_t kref;
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struct key *key;
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if (!sed_opal_keyring)
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return -ENOKEY;
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kref = keyring_search(make_key_ref(sed_opal_keyring, true),
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&key_type_user, key_name, true);
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if (IS_ERR(kref))
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ret = PTR_ERR(kref);
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key = key_ref_to_ptr(kref);
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down_read(&key->sem);
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ret = key_validate(key);
|
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if (ret == 0) {
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if (buflen > key->datalen)
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buflen = key->datalen;
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|
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ret = key->type->read(key, (char *)buffer, buflen);
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}
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up_read(&key->sem);
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|
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key_ref_put(kref);
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|
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return ret;
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}
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|
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static int opal_get_key(struct opal_dev *dev, struct opal_key *key)
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{
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int ret = 0;
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|
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switch (key->key_type) {
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case OPAL_INCLUDED:
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/* the key is ready to use */
|
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break;
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case OPAL_KEYRING:
|
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/* the key is in the keyring */
|
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ret = read_sed_opal_key(OPAL_AUTH_KEY, key->key, OPAL_KEY_MAX);
|
|
if (ret > 0) {
|
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if (ret > U8_MAX) {
|
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ret = -ENOSPC;
|
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goto error;
|
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}
|
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key->key_len = ret;
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key->key_type = OPAL_INCLUDED;
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}
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break;
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default:
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ret = -EINVAL;
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break;
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}
|
|
if (ret < 0)
|
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goto error;
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|
|
|
/* must have a PEK by now or it's an error */
|
|
if (key->key_type != OPAL_INCLUDED || key->key_len == 0) {
|
|
ret = -EINVAL;
|
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goto error;
|
|
}
|
|
return 0;
|
|
error:
|
|
pr_debug("Error getting password: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
static bool check_tper(const void *data)
|
|
{
|
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const struct d0_tper_features *tper = data;
|
|
u8 flags = tper->supported_features;
|
|
|
|
if (!(flags & TPER_SYNC_SUPPORTED)) {
|
|
pr_debug("TPer sync not supported. flags = %d\n",
|
|
tper->supported_features);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool check_lcksuppt(const void *data)
|
|
{
|
|
const struct d0_locking_features *lfeat = data;
|
|
u8 sup_feat = lfeat->supported_features;
|
|
|
|
return !!(sup_feat & LOCKING_SUPPORTED_MASK);
|
|
}
|
|
|
|
static bool check_lckenabled(const void *data)
|
|
{
|
|
const struct d0_locking_features *lfeat = data;
|
|
u8 sup_feat = lfeat->supported_features;
|
|
|
|
return !!(sup_feat & LOCKING_ENABLED_MASK);
|
|
}
|
|
|
|
static bool check_locked(const void *data)
|
|
{
|
|
const struct d0_locking_features *lfeat = data;
|
|
u8 sup_feat = lfeat->supported_features;
|
|
|
|
return !!(sup_feat & LOCKED_MASK);
|
|
}
|
|
|
|
static bool check_mbrenabled(const void *data)
|
|
{
|
|
const struct d0_locking_features *lfeat = data;
|
|
u8 sup_feat = lfeat->supported_features;
|
|
|
|
return !!(sup_feat & MBR_ENABLED_MASK);
|
|
}
|
|
|
|
static bool check_mbrdone(const void *data)
|
|
{
|
|
const struct d0_locking_features *lfeat = data;
|
|
u8 sup_feat = lfeat->supported_features;
|
|
|
|
return !!(sup_feat & MBR_DONE_MASK);
|
|
}
|
|
|
|
static bool check_sum(const void *data)
|
|
{
|
|
const struct d0_single_user_mode *sum = data;
|
|
u32 nlo = be32_to_cpu(sum->num_locking_objects);
|
|
|
|
if (nlo == 0) {
|
|
pr_debug("Need at least one locking object.\n");
|
|
return false;
|
|
}
|
|
|
|
pr_debug("Number of locking objects: %d\n", nlo);
|
|
|
|
return true;
|
|
}
|
|
|
|
static u16 get_comid_v100(const void *data)
|
|
{
|
|
const struct d0_opal_v100 *v100 = data;
|
|
|
|
return be16_to_cpu(v100->baseComID);
|
|
}
|
|
|
|
static u16 get_comid_v200(const void *data)
|
|
{
|
|
const struct d0_opal_v200 *v200 = data;
|
|
|
|
return be16_to_cpu(v200->baseComID);
|
|
}
|
|
|
|
static int opal_send_cmd(struct opal_dev *dev)
|
|
{
|
|
return dev->send_recv(dev->data, dev->comid, TCG_SECP_01,
|
|
dev->cmd, IO_BUFFER_LENGTH,
|
|
true);
|
|
}
|
|
|
|
static int opal_recv_cmd(struct opal_dev *dev)
|
|
{
|
|
return dev->send_recv(dev->data, dev->comid, TCG_SECP_01,
|
|
dev->resp, IO_BUFFER_LENGTH,
|
|
false);
|
|
}
|
|
|
|
static int opal_recv_check(struct opal_dev *dev)
|
|
{
|
|
size_t buflen = IO_BUFFER_LENGTH;
|
|
void *buffer = dev->resp;
|
|
struct opal_header *hdr = buffer;
|
|
int ret;
|
|
|
|
do {
|
|
pr_debug("Sent OPAL command: outstanding=%d, minTransfer=%d\n",
|
|
hdr->cp.outstandingData,
|
|
hdr->cp.minTransfer);
|
|
|
|
if (hdr->cp.outstandingData == 0 ||
|
|
hdr->cp.minTransfer != 0)
|
|
return 0;
|
|
|
|
memset(buffer, 0, buflen);
|
|
ret = opal_recv_cmd(dev);
|
|
} while (!ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_send_recv(struct opal_dev *dev, cont_fn *cont)
|
|
{
|
|
int ret;
|
|
|
|
ret = opal_send_cmd(dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = opal_recv_cmd(dev);
|
|
if (ret)
|
|
return ret;
|
|
ret = opal_recv_check(dev);
|
|
if (ret)
|
|
return ret;
|
|
return cont(dev);
|
|
}
|
|
|
|
static void check_geometry(struct opal_dev *dev, const void *data)
|
|
{
|
|
const struct d0_geometry_features *geo = data;
|
|
|
|
dev->align = be64_to_cpu(geo->alignment_granularity);
|
|
dev->lowest_lba = be64_to_cpu(geo->lowest_aligned_lba);
|
|
dev->logical_block_size = be32_to_cpu(geo->logical_block_size);
|
|
dev->align_required = geo->reserved01 & 1;
|
|
}
|
|
|
|
static int execute_step(struct opal_dev *dev,
|
|
const struct opal_step *step, size_t stepIndex)
|
|
{
|
|
int error = step->fn(dev, step->data);
|
|
|
|
if (error) {
|
|
pr_debug("Step %zu (%pS) failed with error %d: %s\n",
|
|
stepIndex, step->fn, error,
|
|
opal_error_to_human(error));
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
static int execute_steps(struct opal_dev *dev,
|
|
const struct opal_step *steps, size_t n_steps)
|
|
{
|
|
size_t state = 0;
|
|
int error;
|
|
|
|
/* first do a discovery0 */
|
|
error = opal_discovery0_step(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
for (state = 0; state < n_steps; state++) {
|
|
error = execute_step(dev, &steps[state], state);
|
|
if (error)
|
|
goto out_error;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_error:
|
|
/*
|
|
* For each OPAL command the first step in steps starts some sort of
|
|
* session. If an error occurred in the initial discovery0 or if an
|
|
* error occurred in the first step (and thus stopping the loop with
|
|
* state == 0) then there was an error before or during the attempt to
|
|
* start a session. Therefore we shouldn't attempt to terminate a
|
|
* session, as one has not yet been created.
|
|
*/
|
|
if (state > 0)
|
|
end_opal_session_error(dev);
|
|
|
|
return error;
|
|
}
|
|
|
|
static int opal_discovery0_end(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_discovery *discv_out = data; /* may be NULL */
|
|
u8 __user *buf_out;
|
|
u64 len_out;
|
|
bool found_com_id = false, supported = true, single_user = false;
|
|
const struct d0_header *hdr = (struct d0_header *)dev->resp;
|
|
const u8 *epos = dev->resp, *cpos = dev->resp;
|
|
u16 comid = 0;
|
|
u32 hlen = be32_to_cpu(hdr->length);
|
|
|
|
print_buffer(dev->resp, hlen);
|
|
dev->flags &= OPAL_FL_SUPPORTED;
|
|
|
|
if (hlen > IO_BUFFER_LENGTH - sizeof(*hdr)) {
|
|
pr_debug("Discovery length overflows buffer (%zu+%u)/%u\n",
|
|
sizeof(*hdr), hlen, IO_BUFFER_LENGTH);
|
|
return -EFAULT;
|
|
}
|
|
|
|
if (discv_out) {
|
|
buf_out = (u8 __user *)(uintptr_t)discv_out->data;
|
|
len_out = min_t(u64, discv_out->size, hlen);
|
|
if (buf_out && copy_to_user(buf_out, dev->resp, len_out))
|
|
return -EFAULT;
|
|
|
|
discv_out->size = hlen; /* actual size of data */
|
|
}
|
|
|
|
epos += hlen; /* end of buffer */
|
|
cpos += sizeof(*hdr); /* current position on buffer */
|
|
|
|
while (cpos < epos && supported) {
|
|
const struct d0_features *body =
|
|
(const struct d0_features *)cpos;
|
|
|
|
switch (be16_to_cpu(body->code)) {
|
|
case FC_TPER:
|
|
supported = check_tper(body->features);
|
|
break;
|
|
case FC_SINGLEUSER:
|
|
single_user = check_sum(body->features);
|
|
if (single_user)
|
|
dev->flags |= OPAL_FL_SUM_SUPPORTED;
|
|
break;
|
|
case FC_GEOMETRY:
|
|
check_geometry(dev, body);
|
|
break;
|
|
case FC_LOCKING:
|
|
if (check_lcksuppt(body->features))
|
|
dev->flags |= OPAL_FL_LOCKING_SUPPORTED;
|
|
if (check_lckenabled(body->features))
|
|
dev->flags |= OPAL_FL_LOCKING_ENABLED;
|
|
if (check_locked(body->features))
|
|
dev->flags |= OPAL_FL_LOCKED;
|
|
if (check_mbrenabled(body->features))
|
|
dev->flags |= OPAL_FL_MBR_ENABLED;
|
|
if (check_mbrdone(body->features))
|
|
dev->flags |= OPAL_FL_MBR_DONE;
|
|
break;
|
|
case FC_ENTERPRISE:
|
|
case FC_DATASTORE:
|
|
/* some ignored properties */
|
|
pr_debug("Found OPAL feature description: %d\n",
|
|
be16_to_cpu(body->code));
|
|
break;
|
|
case FC_OPALV100:
|
|
comid = get_comid_v100(body->features);
|
|
found_com_id = true;
|
|
break;
|
|
case FC_OPALV200:
|
|
comid = get_comid_v200(body->features);
|
|
found_com_id = true;
|
|
break;
|
|
case 0xbfff ... 0xffff:
|
|
/* vendor specific, just ignore */
|
|
break;
|
|
default:
|
|
pr_debug("OPAL Unknown feature: %d\n",
|
|
be16_to_cpu(body->code));
|
|
|
|
}
|
|
cpos += body->length + 4;
|
|
}
|
|
|
|
if (!supported) {
|
|
pr_debug("This device is not Opal enabled. Not Supported!\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (!single_user)
|
|
pr_debug("Device doesn't support single user mode\n");
|
|
|
|
|
|
if (!found_com_id) {
|
|
pr_debug("Could not find OPAL comid for device. Returning early\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
dev->comid = comid;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int opal_discovery0(struct opal_dev *dev, void *data)
|
|
{
|
|
int ret;
|
|
|
|
memset(dev->resp, 0, IO_BUFFER_LENGTH);
|
|
dev->comid = OPAL_DISCOVERY_COMID;
|
|
ret = opal_recv_cmd(dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return opal_discovery0_end(dev, data);
|
|
}
|
|
|
|
static int opal_discovery0_step(struct opal_dev *dev)
|
|
{
|
|
const struct opal_step discovery0_step = {
|
|
opal_discovery0, NULL
|
|
};
|
|
|
|
return execute_step(dev, &discovery0_step, 0);
|
|
}
|
|
|
|
static size_t remaining_size(struct opal_dev *cmd)
|
|
{
|
|
return IO_BUFFER_LENGTH - cmd->pos;
|
|
}
|
|
|
|
static bool can_add(int *err, struct opal_dev *cmd, size_t len)
|
|
{
|
|
if (*err)
|
|
return false;
|
|
|
|
if (remaining_size(cmd) < len) {
|
|
pr_debug("Error adding %zu bytes: end of buffer.\n", len);
|
|
*err = -ERANGE;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok)
|
|
{
|
|
if (!can_add(err, cmd, 1))
|
|
return;
|
|
|
|
cmd->cmd[cmd->pos++] = tok;
|
|
}
|
|
|
|
static void add_short_atom_header(struct opal_dev *cmd, bool bytestring,
|
|
bool has_sign, int len)
|
|
{
|
|
u8 atom;
|
|
int err = 0;
|
|
|
|
atom = SHORT_ATOM_ID;
|
|
atom |= bytestring ? SHORT_ATOM_BYTESTRING : 0;
|
|
atom |= has_sign ? SHORT_ATOM_SIGNED : 0;
|
|
atom |= len & SHORT_ATOM_LEN_MASK;
|
|
|
|
add_token_u8(&err, cmd, atom);
|
|
}
|
|
|
|
static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring,
|
|
bool has_sign, int len)
|
|
{
|
|
u8 header0;
|
|
|
|
header0 = MEDIUM_ATOM_ID;
|
|
header0 |= bytestring ? MEDIUM_ATOM_BYTESTRING : 0;
|
|
header0 |= has_sign ? MEDIUM_ATOM_SIGNED : 0;
|
|
header0 |= (len >> 8) & MEDIUM_ATOM_LEN_MASK;
|
|
|
|
cmd->cmd[cmd->pos++] = header0;
|
|
cmd->cmd[cmd->pos++] = len;
|
|
}
|
|
|
|
static void add_token_u64(int *err, struct opal_dev *cmd, u64 number)
|
|
{
|
|
size_t len;
|
|
int msb;
|
|
|
|
if (!(number & ~TINY_ATOM_DATA_MASK)) {
|
|
add_token_u8(err, cmd, number);
|
|
return;
|
|
}
|
|
|
|
msb = fls64(number);
|
|
len = DIV_ROUND_UP(msb, 8);
|
|
|
|
if (!can_add(err, cmd, len + 1)) {
|
|
pr_debug("Error adding u64: end of buffer.\n");
|
|
return;
|
|
}
|
|
add_short_atom_header(cmd, false, false, len);
|
|
while (len--)
|
|
add_token_u8(err, cmd, number >> (len * 8));
|
|
}
|
|
|
|
static u8 *add_bytestring_header(int *err, struct opal_dev *cmd, size_t len)
|
|
{
|
|
size_t header_len = 1;
|
|
bool is_short_atom = true;
|
|
|
|
if (len & ~SHORT_ATOM_LEN_MASK) {
|
|
header_len = 2;
|
|
is_short_atom = false;
|
|
}
|
|
|
|
if (!can_add(err, cmd, header_len + len)) {
|
|
pr_debug("Error adding bytestring: end of buffer.\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (is_short_atom)
|
|
add_short_atom_header(cmd, true, false, len);
|
|
else
|
|
add_medium_atom_header(cmd, true, false, len);
|
|
|
|
return &cmd->cmd[cmd->pos];
|
|
}
|
|
|
|
static void add_token_bytestring(int *err, struct opal_dev *cmd,
|
|
const u8 *bytestring, size_t len)
|
|
{
|
|
u8 *start;
|
|
|
|
start = add_bytestring_header(err, cmd, len);
|
|
if (!start)
|
|
return;
|
|
memcpy(start, bytestring, len);
|
|
cmd->pos += len;
|
|
}
|
|
|
|
static int build_locking_range(u8 *buffer, size_t length, u8 lr)
|
|
{
|
|
if (length > OPAL_UID_LENGTH) {
|
|
pr_debug("Can't build locking range. Length OOB\n");
|
|
return -ERANGE;
|
|
}
|
|
|
|
memcpy(buffer, opaluid[OPAL_LOCKINGRANGE_GLOBAL], OPAL_UID_LENGTH);
|
|
|
|
if (lr == 0)
|
|
return 0;
|
|
|
|
buffer[5] = LOCKING_RANGE_NON_GLOBAL;
|
|
buffer[7] = lr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int build_locking_user(u8 *buffer, size_t length, u8 lr)
|
|
{
|
|
if (length > OPAL_UID_LENGTH) {
|
|
pr_debug("Can't build locking range user. Length OOB\n");
|
|
return -ERANGE;
|
|
}
|
|
|
|
memcpy(buffer, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
|
|
|
|
buffer[7] = lr + 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void set_comid(struct opal_dev *cmd, u16 comid)
|
|
{
|
|
struct opal_header *hdr = (struct opal_header *)cmd->cmd;
|
|
|
|
hdr->cp.extendedComID[0] = comid >> 8;
|
|
hdr->cp.extendedComID[1] = comid;
|
|
hdr->cp.extendedComID[2] = 0;
|
|
hdr->cp.extendedComID[3] = 0;
|
|
}
|
|
|
|
static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn)
|
|
{
|
|
struct opal_header *hdr;
|
|
int err = 0;
|
|
|
|
/*
|
|
* Close the parameter list opened from cmd_start.
|
|
* The number of bytes added must be equal to
|
|
* CMD_FINALIZE_BYTES_NEEDED.
|
|
*/
|
|
add_token_u8(&err, cmd, OPAL_ENDLIST);
|
|
|
|
add_token_u8(&err, cmd, OPAL_ENDOFDATA);
|
|
add_token_u8(&err, cmd, OPAL_STARTLIST);
|
|
add_token_u8(&err, cmd, 0);
|
|
add_token_u8(&err, cmd, 0);
|
|
add_token_u8(&err, cmd, 0);
|
|
add_token_u8(&err, cmd, OPAL_ENDLIST);
|
|
|
|
if (err) {
|
|
pr_debug("Error finalizing command.\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
hdr = (struct opal_header *) cmd->cmd;
|
|
|
|
hdr->pkt.tsn = cpu_to_be32(tsn);
|
|
hdr->pkt.hsn = cpu_to_be32(hsn);
|
|
|
|
hdr->subpkt.length = cpu_to_be32(cmd->pos - sizeof(*hdr));
|
|
while (cmd->pos % 4) {
|
|
if (cmd->pos >= IO_BUFFER_LENGTH) {
|
|
pr_debug("Error: Buffer overrun\n");
|
|
return -ERANGE;
|
|
}
|
|
cmd->cmd[cmd->pos++] = 0;
|
|
}
|
|
hdr->pkt.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp) -
|
|
sizeof(hdr->pkt));
|
|
hdr->cp.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct opal_resp_tok *response_get_token(
|
|
const struct parsed_resp *resp,
|
|
int n)
|
|
{
|
|
const struct opal_resp_tok *tok;
|
|
|
|
if (!resp) {
|
|
pr_debug("Response is NULL\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
if (n >= resp->num) {
|
|
pr_debug("Token number doesn't exist: %d, resp: %d\n",
|
|
n, resp->num);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
tok = &resp->toks[n];
|
|
if (tok->len == 0) {
|
|
pr_debug("Token length must be non-zero\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
return tok;
|
|
}
|
|
|
|
static ssize_t response_parse_tiny(struct opal_resp_tok *tok,
|
|
const u8 *pos)
|
|
{
|
|
tok->pos = pos;
|
|
tok->len = 1;
|
|
tok->width = OPAL_WIDTH_TINY;
|
|
|
|
if (pos[0] & TINY_ATOM_SIGNED) {
|
|
tok->type = OPAL_DTA_TOKENID_SINT;
|
|
} else {
|
|
tok->type = OPAL_DTA_TOKENID_UINT;
|
|
tok->stored.u = pos[0] & 0x3f;
|
|
}
|
|
|
|
return tok->len;
|
|
}
|
|
|
|
static ssize_t response_parse_short(struct opal_resp_tok *tok,
|
|
const u8 *pos)
|
|
{
|
|
tok->pos = pos;
|
|
tok->len = (pos[0] & SHORT_ATOM_LEN_MASK) + 1;
|
|
tok->width = OPAL_WIDTH_SHORT;
|
|
|
|
if (pos[0] & SHORT_ATOM_BYTESTRING) {
|
|
tok->type = OPAL_DTA_TOKENID_BYTESTRING;
|
|
} else if (pos[0] & SHORT_ATOM_SIGNED) {
|
|
tok->type = OPAL_DTA_TOKENID_SINT;
|
|
} else {
|
|
u64 u_integer = 0;
|
|
ssize_t i, b = 0;
|
|
|
|
tok->type = OPAL_DTA_TOKENID_UINT;
|
|
if (tok->len > 9) {
|
|
pr_debug("uint64 with more than 8 bytes\n");
|
|
return -EINVAL;
|
|
}
|
|
for (i = tok->len - 1; i > 0; i--) {
|
|
u_integer |= ((u64)pos[i] << (8 * b));
|
|
b++;
|
|
}
|
|
tok->stored.u = u_integer;
|
|
}
|
|
|
|
return tok->len;
|
|
}
|
|
|
|
static ssize_t response_parse_medium(struct opal_resp_tok *tok,
|
|
const u8 *pos)
|
|
{
|
|
tok->pos = pos;
|
|
tok->len = (((pos[0] & MEDIUM_ATOM_LEN_MASK) << 8) | pos[1]) + 2;
|
|
tok->width = OPAL_WIDTH_MEDIUM;
|
|
|
|
if (pos[0] & MEDIUM_ATOM_BYTESTRING)
|
|
tok->type = OPAL_DTA_TOKENID_BYTESTRING;
|
|
else if (pos[0] & MEDIUM_ATOM_SIGNED)
|
|
tok->type = OPAL_DTA_TOKENID_SINT;
|
|
else
|
|
tok->type = OPAL_DTA_TOKENID_UINT;
|
|
|
|
return tok->len;
|
|
}
|
|
|
|
static ssize_t response_parse_long(struct opal_resp_tok *tok,
|
|
const u8 *pos)
|
|
{
|
|
tok->pos = pos;
|
|
tok->len = ((pos[1] << 16) | (pos[2] << 8) | pos[3]) + 4;
|
|
tok->width = OPAL_WIDTH_LONG;
|
|
|
|
if (pos[0] & LONG_ATOM_BYTESTRING)
|
|
tok->type = OPAL_DTA_TOKENID_BYTESTRING;
|
|
else if (pos[0] & LONG_ATOM_SIGNED)
|
|
tok->type = OPAL_DTA_TOKENID_SINT;
|
|
else
|
|
tok->type = OPAL_DTA_TOKENID_UINT;
|
|
|
|
return tok->len;
|
|
}
|
|
|
|
static ssize_t response_parse_token(struct opal_resp_tok *tok,
|
|
const u8 *pos)
|
|
{
|
|
tok->pos = pos;
|
|
tok->len = 1;
|
|
tok->type = OPAL_DTA_TOKENID_TOKEN;
|
|
tok->width = OPAL_WIDTH_TOKEN;
|
|
|
|
return tok->len;
|
|
}
|
|
|
|
static int response_parse(const u8 *buf, size_t length,
|
|
struct parsed_resp *resp)
|
|
{
|
|
const struct opal_header *hdr;
|
|
struct opal_resp_tok *iter;
|
|
int num_entries = 0;
|
|
int total;
|
|
ssize_t token_length;
|
|
const u8 *pos;
|
|
u32 clen, plen, slen;
|
|
|
|
if (!buf)
|
|
return -EFAULT;
|
|
|
|
if (!resp)
|
|
return -EFAULT;
|
|
|
|
hdr = (struct opal_header *)buf;
|
|
pos = buf;
|
|
pos += sizeof(*hdr);
|
|
|
|
clen = be32_to_cpu(hdr->cp.length);
|
|
plen = be32_to_cpu(hdr->pkt.length);
|
|
slen = be32_to_cpu(hdr->subpkt.length);
|
|
pr_debug("Response size: cp: %u, pkt: %u, subpkt: %u\n",
|
|
clen, plen, slen);
|
|
|
|
if (clen == 0 || plen == 0 || slen == 0 ||
|
|
slen > IO_BUFFER_LENGTH - sizeof(*hdr)) {
|
|
pr_debug("Bad header length. cp: %u, pkt: %u, subpkt: %u\n",
|
|
clen, plen, slen);
|
|
print_buffer(pos, sizeof(*hdr));
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (pos > buf + length)
|
|
return -EFAULT;
|
|
|
|
iter = resp->toks;
|
|
total = slen;
|
|
print_buffer(pos, total);
|
|
while (total > 0) {
|
|
if (pos[0] <= TINY_ATOM_BYTE) /* tiny atom */
|
|
token_length = response_parse_tiny(iter, pos);
|
|
else if (pos[0] <= SHORT_ATOM_BYTE) /* short atom */
|
|
token_length = response_parse_short(iter, pos);
|
|
else if (pos[0] <= MEDIUM_ATOM_BYTE) /* medium atom */
|
|
token_length = response_parse_medium(iter, pos);
|
|
else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */
|
|
token_length = response_parse_long(iter, pos);
|
|
else /* TOKEN */
|
|
token_length = response_parse_token(iter, pos);
|
|
|
|
if (token_length < 0)
|
|
return token_length;
|
|
|
|
pos += token_length;
|
|
total -= token_length;
|
|
iter++;
|
|
num_entries++;
|
|
}
|
|
|
|
resp->num = num_entries;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static size_t response_get_string(const struct parsed_resp *resp, int n,
|
|
const char **store)
|
|
{
|
|
u8 skip;
|
|
const struct opal_resp_tok *tok;
|
|
|
|
*store = NULL;
|
|
tok = response_get_token(resp, n);
|
|
if (IS_ERR(tok))
|
|
return 0;
|
|
|
|
if (tok->type != OPAL_DTA_TOKENID_BYTESTRING) {
|
|
pr_debug("Token is not a byte string!\n");
|
|
return 0;
|
|
}
|
|
|
|
switch (tok->width) {
|
|
case OPAL_WIDTH_TINY:
|
|
case OPAL_WIDTH_SHORT:
|
|
skip = 1;
|
|
break;
|
|
case OPAL_WIDTH_MEDIUM:
|
|
skip = 2;
|
|
break;
|
|
case OPAL_WIDTH_LONG:
|
|
skip = 4;
|
|
break;
|
|
default:
|
|
pr_debug("Token has invalid width!\n");
|
|
return 0;
|
|
}
|
|
|
|
*store = tok->pos + skip;
|
|
|
|
return tok->len - skip;
|
|
}
|
|
|
|
static u64 response_get_u64(const struct parsed_resp *resp, int n)
|
|
{
|
|
const struct opal_resp_tok *tok;
|
|
|
|
tok = response_get_token(resp, n);
|
|
if (IS_ERR(tok))
|
|
return 0;
|
|
|
|
if (tok->type != OPAL_DTA_TOKENID_UINT) {
|
|
pr_debug("Token is not unsigned int: %d\n", tok->type);
|
|
return 0;
|
|
}
|
|
|
|
if (tok->width != OPAL_WIDTH_TINY && tok->width != OPAL_WIDTH_SHORT) {
|
|
pr_debug("Atom is not short or tiny: %d\n", tok->width);
|
|
return 0;
|
|
}
|
|
|
|
return tok->stored.u;
|
|
}
|
|
|
|
static bool response_token_matches(const struct opal_resp_tok *token, u8 match)
|
|
{
|
|
if (IS_ERR(token) ||
|
|
token->type != OPAL_DTA_TOKENID_TOKEN ||
|
|
token->pos[0] != match)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static u8 response_status(const struct parsed_resp *resp)
|
|
{
|
|
const struct opal_resp_tok *tok;
|
|
|
|
tok = response_get_token(resp, 0);
|
|
if (response_token_matches(tok, OPAL_ENDOFSESSION))
|
|
return 0;
|
|
|
|
if (resp->num < 5)
|
|
return DTAERROR_NO_METHOD_STATUS;
|
|
|
|
tok = response_get_token(resp, resp->num - 5);
|
|
if (!response_token_matches(tok, OPAL_STARTLIST))
|
|
return DTAERROR_NO_METHOD_STATUS;
|
|
|
|
tok = response_get_token(resp, resp->num - 1);
|
|
if (!response_token_matches(tok, OPAL_ENDLIST))
|
|
return DTAERROR_NO_METHOD_STATUS;
|
|
|
|
return response_get_u64(resp, resp->num - 4);
|
|
}
|
|
|
|
/* Parses and checks for errors */
|
|
static int parse_and_check_status(struct opal_dev *dev)
|
|
{
|
|
int error;
|
|
|
|
print_buffer(dev->cmd, dev->pos);
|
|
|
|
error = response_parse(dev->resp, IO_BUFFER_LENGTH, &dev->parsed);
|
|
if (error) {
|
|
pr_debug("Couldn't parse response.\n");
|
|
return error;
|
|
}
|
|
|
|
return response_status(&dev->parsed);
|
|
}
|
|
|
|
static void clear_opal_cmd(struct opal_dev *dev)
|
|
{
|
|
dev->pos = sizeof(struct opal_header);
|
|
memset(dev->cmd, 0, IO_BUFFER_LENGTH);
|
|
}
|
|
|
|
static int cmd_start(struct opal_dev *dev, const u8 *uid, const u8 *method)
|
|
{
|
|
int err = 0;
|
|
|
|
clear_opal_cmd(dev);
|
|
set_comid(dev, dev->comid);
|
|
|
|
add_token_u8(&err, dev, OPAL_CALL);
|
|
add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH);
|
|
add_token_bytestring(&err, dev, method, OPAL_METHOD_LENGTH);
|
|
|
|
/*
|
|
* Every method call is followed by its parameters enclosed within
|
|
* OPAL_STARTLIST and OPAL_ENDLIST tokens. We automatically open the
|
|
* parameter list here and close it later in cmd_finalize.
|
|
*/
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int start_opal_session_cont(struct opal_dev *dev)
|
|
{
|
|
u32 hsn, tsn;
|
|
int error = 0;
|
|
|
|
error = parse_and_check_status(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
hsn = response_get_u64(&dev->parsed, 4);
|
|
tsn = response_get_u64(&dev->parsed, 5);
|
|
|
|
if (hsn != GENERIC_HOST_SESSION_NUM || tsn < FIRST_TPER_SESSION_NUM) {
|
|
pr_debug("Couldn't authenticate session\n");
|
|
return -EPERM;
|
|
}
|
|
|
|
dev->hsn = hsn;
|
|
dev->tsn = tsn;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void add_suspend_info(struct opal_dev *dev,
|
|
struct opal_suspend_data *sus)
|
|
{
|
|
struct opal_suspend_data *iter;
|
|
|
|
list_for_each_entry(iter, &dev->unlk_lst, node) {
|
|
if (iter->lr == sus->lr) {
|
|
list_del(&iter->node);
|
|
kfree(iter);
|
|
break;
|
|
}
|
|
}
|
|
list_add_tail(&sus->node, &dev->unlk_lst);
|
|
}
|
|
|
|
static int end_session_cont(struct opal_dev *dev)
|
|
{
|
|
dev->hsn = 0;
|
|
dev->tsn = 0;
|
|
|
|
return parse_and_check_status(dev);
|
|
}
|
|
|
|
static int finalize_and_send(struct opal_dev *dev, cont_fn cont)
|
|
{
|
|
int ret;
|
|
|
|
ret = cmd_finalize(dev, dev->hsn, dev->tsn);
|
|
if (ret) {
|
|
pr_debug("Error finalizing command buffer: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
print_buffer(dev->cmd, dev->pos);
|
|
|
|
return opal_send_recv(dev, cont);
|
|
}
|
|
|
|
static int generic_get_columns(struct opal_dev *dev, const u8 *table,
|
|
u64 start_column, u64 end_column)
|
|
{
|
|
int err;
|
|
|
|
err = cmd_start(dev, table, opalmethod[OPAL_GET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_STARTCOLUMN);
|
|
add_token_u64(&err, dev, start_column);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDCOLUMN);
|
|
add_token_u64(&err, dev, end_column);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
/*
|
|
* request @column from table @table on device @dev. On success, the column
|
|
* data will be available in dev->resp->tok[4]
|
|
*/
|
|
static int generic_get_column(struct opal_dev *dev, const u8 *table,
|
|
u64 column)
|
|
{
|
|
return generic_get_columns(dev, table, column, column);
|
|
}
|
|
|
|
/*
|
|
* 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, const u8 *table_uid,
|
|
u64 column)
|
|
{
|
|
u8 uid[OPAL_UID_LENGTH];
|
|
const unsigned int half = OPAL_UID_LENGTH_HALF;
|
|
|
|
/* sed-opal UIDs can be split in two halves:
|
|
* 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, table_uid, half);
|
|
|
|
return generic_get_column(dev, uid, column);
|
|
}
|
|
|
|
static int gen_key(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 uid[OPAL_UID_LENGTH];
|
|
int err;
|
|
|
|
memcpy(uid, dev->prev_data, min(sizeof(uid), dev->prev_d_len));
|
|
kfree(dev->prev_data);
|
|
dev->prev_data = NULL;
|
|
|
|
err = cmd_start(dev, uid, opalmethod[OPAL_GENKEY]);
|
|
|
|
if (err) {
|
|
pr_debug("Error building gen key command\n");
|
|
return err;
|
|
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int get_active_key_cont(struct opal_dev *dev)
|
|
{
|
|
const char *activekey;
|
|
size_t keylen;
|
|
int error = 0;
|
|
|
|
error = parse_and_check_status(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
keylen = response_get_string(&dev->parsed, 4, &activekey);
|
|
if (!activekey) {
|
|
pr_debug("%s: Couldn't extract the Activekey from the response\n",
|
|
__func__);
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
|
|
dev->prev_data = kmemdup(activekey, keylen, GFP_KERNEL);
|
|
|
|
if (!dev->prev_data)
|
|
return -ENOMEM;
|
|
|
|
dev->prev_d_len = keylen;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_active_key(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 uid[OPAL_UID_LENGTH];
|
|
int err;
|
|
u8 *lr = data;
|
|
|
|
err = build_locking_range(uid, sizeof(uid), *lr);
|
|
if (err)
|
|
return err;
|
|
|
|
err = generic_get_column(dev, uid, OPAL_ACTIVEKEY);
|
|
if (err)
|
|
return err;
|
|
|
|
return get_active_key_cont(dev);
|
|
}
|
|
|
|
static int generic_table_write_data(struct opal_dev *dev, const u64 data,
|
|
u64 offset, u64 size, const u8 *uid)
|
|
{
|
|
const u8 __user *src = (u8 __user *)(uintptr_t)data;
|
|
u8 *dst;
|
|
u64 len;
|
|
size_t off = 0;
|
|
int err;
|
|
|
|
/* do we fit in the available space? */
|
|
err = generic_get_table_info(dev, uid, OPAL_TABLE_ROWS);
|
|
if (err) {
|
|
pr_debug("Couldn't get the table size\n");
|
|
return err;
|
|
}
|
|
|
|
len = response_get_u64(&dev->parsed, 4);
|
|
if (size > len || offset > len - size) {
|
|
pr_debug("Does not fit in the table (%llu vs. %llu)\n",
|
|
offset + size, len);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
/* do the actual transmission(s) */
|
|
while (off < size) {
|
|
err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_WHERE);
|
|
add_token_u64(&err, dev, offset + off);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
|
|
/*
|
|
* The bytestring header is either 1 or 2 bytes, so assume 2.
|
|
* There also needs to be enough space to accommodate the
|
|
* trailing OPAL_ENDNAME (1 byte) and tokens added by
|
|
* cmd_finalize.
|
|
*/
|
|
len = min(remaining_size(dev) - (2+1+CMD_FINALIZE_BYTES_NEEDED),
|
|
(size_t)(size - off));
|
|
pr_debug("Write bytes %zu+%llu/%llu\n", off, len, size);
|
|
|
|
dst = add_bytestring_header(&err, dev, len);
|
|
if (!dst)
|
|
break;
|
|
|
|
if (copy_from_user(dst, src + off, len)) {
|
|
err = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
dev->pos += len;
|
|
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
if (err)
|
|
break;
|
|
|
|
err = finalize_and_send(dev, parse_and_check_status);
|
|
if (err)
|
|
break;
|
|
|
|
off += len;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int generic_lr_enable_disable(struct opal_dev *dev,
|
|
u8 *uid, bool rle, bool wle,
|
|
bool rl, bool wl)
|
|
{
|
|
int err;
|
|
|
|
err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_READLOCKENABLED);
|
|
add_token_u8(&err, dev, rle);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_WRITELOCKENABLED);
|
|
add_token_u8(&err, dev, wle);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_READLOCKED);
|
|
add_token_u8(&err, dev, rl);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_WRITELOCKED);
|
|
add_token_u8(&err, dev, wl);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
return err;
|
|
}
|
|
|
|
static inline int enable_global_lr(struct opal_dev *dev, u8 *uid,
|
|
struct opal_user_lr_setup *setup)
|
|
{
|
|
int err;
|
|
|
|
err = generic_lr_enable_disable(dev, uid, !!setup->RLE, !!setup->WLE,
|
|
0, 0);
|
|
if (err)
|
|
pr_debug("Failed to create enable global lr command\n");
|
|
|
|
return err;
|
|
}
|
|
|
|
static int setup_locking_range(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 uid[OPAL_UID_LENGTH];
|
|
struct opal_user_lr_setup *setup = data;
|
|
u8 lr;
|
|
int err;
|
|
|
|
lr = setup->session.opal_key.lr;
|
|
err = build_locking_range(uid, sizeof(uid), lr);
|
|
if (err)
|
|
return err;
|
|
|
|
if (lr == 0)
|
|
err = enable_global_lr(dev, uid, setup);
|
|
else {
|
|
err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_RANGESTART);
|
|
add_token_u64(&err, dev, setup->range_start);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_RANGELENGTH);
|
|
add_token_u64(&err, dev, setup->range_length);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_READLOCKENABLED);
|
|
add_token_u64(&err, dev, !!setup->RLE);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_WRITELOCKENABLED);
|
|
add_token_u64(&err, dev, !!setup->WLE);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
}
|
|
if (err) {
|
|
pr_debug("Error building Setup Locking range command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int response_get_column(const struct parsed_resp *resp,
|
|
int *iter,
|
|
u8 column,
|
|
u64 *value)
|
|
{
|
|
const struct opal_resp_tok *tok;
|
|
int n = *iter;
|
|
u64 val;
|
|
|
|
tok = response_get_token(resp, n);
|
|
if (IS_ERR(tok))
|
|
return PTR_ERR(tok);
|
|
|
|
if (!response_token_matches(tok, OPAL_STARTNAME)) {
|
|
pr_debug("Unexpected response token type %d.\n", n);
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
n++;
|
|
|
|
if (response_get_u64(resp, n) != column) {
|
|
pr_debug("Token %d does not match expected column %u.\n",
|
|
n, column);
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
n++;
|
|
|
|
val = response_get_u64(resp, n);
|
|
n++;
|
|
|
|
tok = response_get_token(resp, n);
|
|
if (IS_ERR(tok))
|
|
return PTR_ERR(tok);
|
|
|
|
if (!response_token_matches(tok, OPAL_ENDNAME)) {
|
|
pr_debug("Unexpected response token type %d.\n", n);
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
n++;
|
|
|
|
*value = val;
|
|
*iter = n;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int locking_range_status(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 lr_buffer[OPAL_UID_LENGTH];
|
|
u64 resp;
|
|
bool rlocked, wlocked;
|
|
int err, tok_n = 2;
|
|
struct opal_lr_status *lrst = data;
|
|
|
|
err = build_locking_range(lr_buffer, sizeof(lr_buffer),
|
|
lrst->session.opal_key.lr);
|
|
if (err)
|
|
return err;
|
|
|
|
err = generic_get_columns(dev, lr_buffer, OPAL_RANGESTART,
|
|
OPAL_WRITELOCKED);
|
|
if (err) {
|
|
pr_debug("Couldn't get lr %u table columns %d to %d.\n",
|
|
lrst->session.opal_key.lr, OPAL_RANGESTART,
|
|
OPAL_WRITELOCKED);
|
|
return err;
|
|
}
|
|
|
|
/* range start */
|
|
err = response_get_column(&dev->parsed, &tok_n, OPAL_RANGESTART,
|
|
&lrst->range_start);
|
|
if (err)
|
|
return err;
|
|
|
|
/* range length */
|
|
err = response_get_column(&dev->parsed, &tok_n, OPAL_RANGELENGTH,
|
|
&lrst->range_length);
|
|
if (err)
|
|
return err;
|
|
|
|
/* RLE */
|
|
err = response_get_column(&dev->parsed, &tok_n, OPAL_READLOCKENABLED,
|
|
&resp);
|
|
if (err)
|
|
return err;
|
|
|
|
lrst->RLE = !!resp;
|
|
|
|
/* WLE */
|
|
err = response_get_column(&dev->parsed, &tok_n, OPAL_WRITELOCKENABLED,
|
|
&resp);
|
|
if (err)
|
|
return err;
|
|
|
|
lrst->WLE = !!resp;
|
|
|
|
/* read locked */
|
|
err = response_get_column(&dev->parsed, &tok_n, OPAL_READLOCKED, &resp);
|
|
if (err)
|
|
return err;
|
|
|
|
rlocked = !!resp;
|
|
|
|
/* write locked */
|
|
err = response_get_column(&dev->parsed, &tok_n, OPAL_WRITELOCKED, &resp);
|
|
if (err)
|
|
return err;
|
|
|
|
wlocked = !!resp;
|
|
|
|
/* opal_lock_state can not map 'read locked' only state. */
|
|
lrst->l_state = OPAL_RW;
|
|
if (rlocked && wlocked)
|
|
lrst->l_state = OPAL_LK;
|
|
else if (wlocked)
|
|
lrst->l_state = OPAL_RO;
|
|
else if (rlocked) {
|
|
pr_debug("Can not report read locked only state.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int start_generic_opal_session(struct opal_dev *dev,
|
|
enum opal_uid auth,
|
|
enum opal_uid sp_type,
|
|
const char *key,
|
|
u8 key_len)
|
|
{
|
|
u32 hsn;
|
|
int err;
|
|
|
|
if (key == NULL && auth != OPAL_ANYBODY_UID)
|
|
return OPAL_INVAL_PARAM;
|
|
|
|
hsn = GENERIC_HOST_SESSION_NUM;
|
|
err = cmd_start(dev, opaluid[OPAL_SMUID_UID],
|
|
opalmethod[OPAL_STARTSESSION]);
|
|
|
|
add_token_u64(&err, dev, hsn);
|
|
add_token_bytestring(&err, dev, opaluid[sp_type], OPAL_UID_LENGTH);
|
|
add_token_u8(&err, dev, 1);
|
|
|
|
switch (auth) {
|
|
case OPAL_ANYBODY_UID:
|
|
break;
|
|
case OPAL_ADMIN1_UID:
|
|
case OPAL_SID_UID:
|
|
case OPAL_PSID_UID:
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, 0); /* HostChallenge */
|
|
add_token_bytestring(&err, dev, key, key_len);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, 3); /* HostSignAuth */
|
|
add_token_bytestring(&err, dev, opaluid[auth],
|
|
OPAL_UID_LENGTH);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
break;
|
|
default:
|
|
pr_debug("Cannot start Admin SP session with auth %d\n", auth);
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
|
|
if (err) {
|
|
pr_debug("Error building start adminsp session command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, start_opal_session_cont);
|
|
}
|
|
|
|
static int start_anybodyASP_opal_session(struct opal_dev *dev, void *data)
|
|
{
|
|
return start_generic_opal_session(dev, OPAL_ANYBODY_UID,
|
|
OPAL_ADMINSP_UID, NULL, 0);
|
|
}
|
|
|
|
static int start_SIDASP_opal_session(struct opal_dev *dev, void *data)
|
|
{
|
|
int ret;
|
|
const u8 *key = dev->prev_data;
|
|
|
|
if (!key) {
|
|
const struct opal_key *okey = data;
|
|
|
|
ret = start_generic_opal_session(dev, OPAL_SID_UID,
|
|
OPAL_ADMINSP_UID,
|
|
okey->key,
|
|
okey->key_len);
|
|
} else {
|
|
ret = start_generic_opal_session(dev, OPAL_SID_UID,
|
|
OPAL_ADMINSP_UID,
|
|
key, dev->prev_d_len);
|
|
kfree(key);
|
|
dev->prev_data = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int start_admin1LSP_opal_session(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_key *key = data;
|
|
|
|
return start_generic_opal_session(dev, OPAL_ADMIN1_UID,
|
|
OPAL_LOCKINGSP_UID,
|
|
key->key, key->key_len);
|
|
}
|
|
|
|
static int start_PSID_opal_session(struct opal_dev *dev, void *data)
|
|
{
|
|
const struct opal_key *okey = data;
|
|
|
|
return start_generic_opal_session(dev, OPAL_PSID_UID,
|
|
OPAL_ADMINSP_UID,
|
|
okey->key,
|
|
okey->key_len);
|
|
}
|
|
|
|
static int start_auth_opal_session(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_session_info *session = data;
|
|
u8 lk_ul_user[OPAL_UID_LENGTH];
|
|
size_t keylen = session->opal_key.key_len;
|
|
int err = 0;
|
|
|
|
u8 *key = session->opal_key.key;
|
|
u32 hsn = GENERIC_HOST_SESSION_NUM;
|
|
|
|
if (session->sum)
|
|
err = build_locking_user(lk_ul_user, sizeof(lk_ul_user),
|
|
session->opal_key.lr);
|
|
else if (session->who != OPAL_ADMIN1 && !session->sum)
|
|
err = build_locking_user(lk_ul_user, sizeof(lk_ul_user),
|
|
session->who - 1);
|
|
else
|
|
memcpy(lk_ul_user, opaluid[OPAL_ADMIN1_UID], OPAL_UID_LENGTH);
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
err = cmd_start(dev, opaluid[OPAL_SMUID_UID],
|
|
opalmethod[OPAL_STARTSESSION]);
|
|
|
|
add_token_u64(&err, dev, hsn);
|
|
add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID],
|
|
OPAL_UID_LENGTH);
|
|
add_token_u8(&err, dev, 1);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, 0);
|
|
add_token_bytestring(&err, dev, key, keylen);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, 3);
|
|
add_token_bytestring(&err, dev, lk_ul_user, OPAL_UID_LENGTH);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
if (err) {
|
|
pr_debug("Error building STARTSESSION command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, start_opal_session_cont);
|
|
}
|
|
|
|
static int revert_tper(struct opal_dev *dev, void *data)
|
|
{
|
|
int err;
|
|
|
|
err = cmd_start(dev, opaluid[OPAL_ADMINSP_UID],
|
|
opalmethod[OPAL_REVERT]);
|
|
if (err) {
|
|
pr_debug("Error building REVERT TPER command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int internal_activate_user(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_session_info *session = data;
|
|
u8 uid[OPAL_UID_LENGTH];
|
|
int err;
|
|
|
|
memcpy(uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
|
|
uid[7] = session->who;
|
|
|
|
err = cmd_start(dev, uid, opalmethod[OPAL_SET]);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, 5); /* Enabled */
|
|
add_token_u8(&err, dev, OPAL_TRUE);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
if (err) {
|
|
pr_debug("Error building Activate UserN command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int revert_lsp(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_revert_lsp *rev = data;
|
|
int err;
|
|
|
|
err = cmd_start(dev, opaluid[OPAL_THISSP_UID],
|
|
opalmethod[OPAL_REVERTSP]);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u64(&err, dev, OPAL_KEEP_GLOBAL_RANGE_KEY);
|
|
add_token_u8(&err, dev, (rev->options & OPAL_PRESERVE) ?
|
|
OPAL_TRUE : OPAL_FALSE);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
if (err) {
|
|
pr_debug("Error building REVERT SP command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int erase_locking_range(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_session_info *session = data;
|
|
u8 uid[OPAL_UID_LENGTH];
|
|
int err;
|
|
|
|
if (build_locking_range(uid, sizeof(uid), session->opal_key.lr) < 0)
|
|
return -ERANGE;
|
|
|
|
err = cmd_start(dev, uid, opalmethod[OPAL_ERASE]);
|
|
|
|
if (err) {
|
|
pr_debug("Error building Erase Locking Range Command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int set_mbr_done(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 *mbr_done_tf = data;
|
|
int err;
|
|
|
|
err = cmd_start(dev, opaluid[OPAL_MBRCONTROL],
|
|
opalmethod[OPAL_SET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_MBRDONE);
|
|
add_token_u8(&err, dev, *mbr_done_tf); /* Done T or F */
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
if (err) {
|
|
pr_debug("Error Building set MBR Done command\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int set_mbr_enable_disable(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 *mbr_en_dis = data;
|
|
int err;
|
|
|
|
err = cmd_start(dev, opaluid[OPAL_MBRCONTROL],
|
|
opalmethod[OPAL_SET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_MBRENABLE);
|
|
add_token_u8(&err, dev, *mbr_en_dis);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
if (err) {
|
|
pr_debug("Error Building set MBR done command\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int write_shadow_mbr(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_shadow_mbr *shadow = data;
|
|
|
|
return generic_table_write_data(dev, shadow->data, shadow->offset,
|
|
shadow->size, opaluid[OPAL_MBR]);
|
|
}
|
|
|
|
static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid,
|
|
struct opal_dev *dev)
|
|
{
|
|
int err;
|
|
|
|
err = cmd_start(dev, cpin_uid, opalmethod[OPAL_SET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_PIN);
|
|
add_token_bytestring(&err, dev, key, key_len);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int set_new_pw(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 cpin_uid[OPAL_UID_LENGTH];
|
|
struct opal_session_info *usr = data;
|
|
|
|
memcpy(cpin_uid, opaluid[OPAL_C_PIN_ADMIN1], OPAL_UID_LENGTH);
|
|
|
|
if (usr->who != OPAL_ADMIN1) {
|
|
cpin_uid[5] = 0x03;
|
|
if (usr->sum)
|
|
cpin_uid[7] = usr->opal_key.lr + 1;
|
|
else
|
|
cpin_uid[7] = usr->who;
|
|
}
|
|
|
|
if (generic_pw_cmd(usr->opal_key.key, usr->opal_key.key_len,
|
|
cpin_uid, dev)) {
|
|
pr_debug("Error building set password command.\n");
|
|
return -ERANGE;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int set_sid_cpin_pin(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 cpin_uid[OPAL_UID_LENGTH];
|
|
struct opal_key *key = data;
|
|
|
|
memcpy(cpin_uid, opaluid[OPAL_C_PIN_SID], OPAL_UID_LENGTH);
|
|
|
|
if (generic_pw_cmd(key->key, key->key_len, cpin_uid, dev)) {
|
|
pr_debug("Error building Set SID cpin\n");
|
|
return -ERANGE;
|
|
}
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static void add_authority_object_ref(int *err,
|
|
struct opal_dev *dev,
|
|
const u8 *uid,
|
|
size_t uid_len)
|
|
{
|
|
add_token_u8(err, dev, OPAL_STARTNAME);
|
|
add_token_bytestring(err, dev,
|
|
opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
|
|
OPAL_UID_LENGTH/2);
|
|
add_token_bytestring(err, dev, uid, uid_len);
|
|
add_token_u8(err, dev, OPAL_ENDNAME);
|
|
}
|
|
|
|
static void add_boolean_object_ref(int *err,
|
|
struct opal_dev *dev,
|
|
u8 boolean_op)
|
|
{
|
|
add_token_u8(err, dev, OPAL_STARTNAME);
|
|
add_token_bytestring(err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE],
|
|
OPAL_UID_LENGTH/2);
|
|
add_token_u8(err, dev, boolean_op);
|
|
add_token_u8(err, dev, OPAL_ENDNAME);
|
|
}
|
|
|
|
static int set_lr_boolean_ace(struct opal_dev *dev,
|
|
unsigned int opal_uid,
|
|
u8 lr,
|
|
const u8 *users,
|
|
size_t users_len)
|
|
{
|
|
u8 lr_buffer[OPAL_UID_LENGTH];
|
|
u8 user_uid[OPAL_UID_LENGTH];
|
|
u8 u;
|
|
int err;
|
|
|
|
memcpy(lr_buffer, opaluid[opal_uid], OPAL_UID_LENGTH);
|
|
lr_buffer[7] = lr;
|
|
|
|
err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, 3);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
|
|
for (u = 0; u < users_len; u++) {
|
|
if (users[u] == OPAL_ADMIN1)
|
|
memcpy(user_uid, opaluid[OPAL_ADMIN1_UID],
|
|
OPAL_UID_LENGTH);
|
|
else {
|
|
memcpy(user_uid, opaluid[OPAL_USER1_UID],
|
|
OPAL_UID_LENGTH);
|
|
user_uid[7] = users[u];
|
|
}
|
|
|
|
add_authority_object_ref(&err, dev, user_uid, sizeof(user_uid));
|
|
|
|
/*
|
|
* Add boolean operator in postfix only with
|
|
* two or more authorities being added in ACE
|
|
* expresion.
|
|
* */
|
|
if (u > 0)
|
|
add_boolean_object_ref(&err, dev, OPAL_BOOLEAN_OR);
|
|
}
|
|
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int add_user_to_lr(struct opal_dev *dev, void *data)
|
|
{
|
|
int err;
|
|
struct opal_lock_unlock *lkul = data;
|
|
const u8 users[] = {
|
|
lkul->session.who
|
|
};
|
|
|
|
err = set_lr_boolean_ace(dev,
|
|
lkul->l_state == OPAL_RW ?
|
|
OPAL_LOCKINGRANGE_ACE_WRLOCKED :
|
|
OPAL_LOCKINGRANGE_ACE_RDLOCKED,
|
|
lkul->session.opal_key.lr, users,
|
|
ARRAY_SIZE(users));
|
|
if (err) {
|
|
pr_debug("Error building add user to locking range command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int add_user_to_lr_ace(struct opal_dev *dev, void *data)
|
|
{
|
|
int err;
|
|
struct opal_lock_unlock *lkul = data;
|
|
const u8 users[] = {
|
|
OPAL_ADMIN1,
|
|
lkul->session.who
|
|
};
|
|
|
|
err = set_lr_boolean_ace(dev, OPAL_LOCKINGRANGE_ACE_START_TO_KEY,
|
|
lkul->session.opal_key.lr, users,
|
|
ARRAY_SIZE(users));
|
|
|
|
if (err) {
|
|
pr_debug("Error building add user to locking ranges ACEs.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int lock_unlock_locking_range(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 lr_buffer[OPAL_UID_LENGTH];
|
|
struct opal_lock_unlock *lkul = data;
|
|
u8 read_locked = 1, write_locked = 1;
|
|
int err = 0;
|
|
|
|
if (build_locking_range(lr_buffer, sizeof(lr_buffer),
|
|
lkul->session.opal_key.lr) < 0)
|
|
return -ERANGE;
|
|
|
|
switch (lkul->l_state) {
|
|
case OPAL_RO:
|
|
read_locked = 0;
|
|
write_locked = 1;
|
|
break;
|
|
case OPAL_RW:
|
|
read_locked = 0;
|
|
write_locked = 0;
|
|
break;
|
|
case OPAL_LK:
|
|
/* vars are initialized to locked */
|
|
break;
|
|
default:
|
|
pr_debug("Tried to set an invalid locking state... returning to uland\n");
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
|
|
err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_VALUES);
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_READLOCKED);
|
|
add_token_u8(&err, dev, read_locked);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_WRITELOCKED);
|
|
add_token_u8(&err, dev, write_locked);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
if (err) {
|
|
pr_debug("Error building SET command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
|
|
static int lock_unlock_locking_range_sum(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 lr_buffer[OPAL_UID_LENGTH];
|
|
u8 read_locked = 1, write_locked = 1;
|
|
struct opal_lock_unlock *lkul = data;
|
|
int ret;
|
|
|
|
clear_opal_cmd(dev);
|
|
set_comid(dev, dev->comid);
|
|
|
|
if (build_locking_range(lr_buffer, sizeof(lr_buffer),
|
|
lkul->session.opal_key.lr) < 0)
|
|
return -ERANGE;
|
|
|
|
switch (lkul->l_state) {
|
|
case OPAL_RO:
|
|
read_locked = 0;
|
|
write_locked = 1;
|
|
break;
|
|
case OPAL_RW:
|
|
read_locked = 0;
|
|
write_locked = 0;
|
|
break;
|
|
case OPAL_LK:
|
|
/* vars are initialized to locked */
|
|
break;
|
|
default:
|
|
pr_debug("Tried to set an invalid locking state.\n");
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
ret = generic_lr_enable_disable(dev, lr_buffer, 1, 1,
|
|
read_locked, write_locked);
|
|
|
|
if (ret < 0) {
|
|
pr_debug("Error building SET command.\n");
|
|
return ret;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
static int activate_lsp(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_lr_act *opal_act = data;
|
|
u8 user_lr[OPAL_UID_LENGTH];
|
|
int err, i;
|
|
|
|
err = cmd_start(dev, opaluid[OPAL_LOCKINGSP_UID],
|
|
opalmethod[OPAL_ACTIVATE]);
|
|
|
|
if (opal_act->sum) {
|
|
err = build_locking_range(user_lr, sizeof(user_lr),
|
|
opal_act->lr[0]);
|
|
if (err)
|
|
return err;
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u64(&err, dev, OPAL_SUM_SET_LIST);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH);
|
|
for (i = 1; i < opal_act->num_lrs; i++) {
|
|
user_lr[7] = opal_act->lr[i];
|
|
add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH);
|
|
}
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
}
|
|
|
|
if (err) {
|
|
pr_debug("Error building Activate LockingSP command.\n");
|
|
return err;
|
|
}
|
|
|
|
return finalize_and_send(dev, parse_and_check_status);
|
|
}
|
|
|
|
/* Determine if we're in the Manufactured Inactive or Active state */
|
|
static int get_lsp_lifecycle(struct opal_dev *dev, void *data)
|
|
{
|
|
u8 lc_status;
|
|
int err;
|
|
|
|
err = generic_get_column(dev, opaluid[OPAL_LOCKINGSP_UID],
|
|
OPAL_LIFECYCLE);
|
|
if (err)
|
|
return err;
|
|
|
|
lc_status = response_get_u64(&dev->parsed, 4);
|
|
/* 0x08 is Manufactured Inactive */
|
|
/* 0x09 is Manufactured */
|
|
if (lc_status != OPAL_MANUFACTURED_INACTIVE) {
|
|
pr_debug("Couldn't determine the status of the Lifecycle state\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_msid_cpin_pin(struct opal_dev *dev, void *data)
|
|
{
|
|
const char *msid_pin;
|
|
size_t strlen;
|
|
int err;
|
|
|
|
err = generic_get_column(dev, opaluid[OPAL_C_PIN_MSID], OPAL_PIN);
|
|
if (err)
|
|
return err;
|
|
|
|
strlen = response_get_string(&dev->parsed, 4, &msid_pin);
|
|
if (!msid_pin) {
|
|
pr_debug("Couldn't extract MSID_CPIN from response\n");
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
|
|
dev->prev_data = kmemdup(msid_pin, strlen, GFP_KERNEL);
|
|
if (!dev->prev_data)
|
|
return -ENOMEM;
|
|
|
|
dev->prev_d_len = strlen;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_table_data(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_read_write_table *write_tbl = data;
|
|
|
|
return generic_table_write_data(dev, write_tbl->data, write_tbl->offset,
|
|
write_tbl->size, write_tbl->table_uid);
|
|
}
|
|
|
|
static int read_table_data_cont(struct opal_dev *dev)
|
|
{
|
|
int err;
|
|
const char *data_read;
|
|
|
|
err = parse_and_check_status(dev);
|
|
if (err)
|
|
return err;
|
|
|
|
dev->prev_d_len = response_get_string(&dev->parsed, 1, &data_read);
|
|
dev->prev_data = (void *)data_read;
|
|
if (!dev->prev_data) {
|
|
pr_debug("%s: Couldn't read data from the table.\n", __func__);
|
|
return OPAL_INVAL_PARAM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* IO_BUFFER_LENGTH = 2048
|
|
* sizeof(header) = 56
|
|
* No. of Token Bytes in the Response = 11
|
|
* MAX size of data that can be carried in response buffer
|
|
* at a time is : 2048 - (56 + 11) = 1981 = 0x7BD.
|
|
*/
|
|
#define OPAL_MAX_READ_TABLE (0x7BD)
|
|
|
|
static int read_table_data(struct opal_dev *dev, void *data)
|
|
{
|
|
struct opal_read_write_table *read_tbl = data;
|
|
int err;
|
|
size_t off = 0, max_read_size = OPAL_MAX_READ_TABLE;
|
|
u64 table_len, len;
|
|
u64 offset = read_tbl->offset, read_size = read_tbl->size - 1;
|
|
u8 __user *dst;
|
|
|
|
err = generic_get_table_info(dev, read_tbl->table_uid, OPAL_TABLE_ROWS);
|
|
if (err) {
|
|
pr_debug("Couldn't get the table size\n");
|
|
return err;
|
|
}
|
|
|
|
table_len = response_get_u64(&dev->parsed, 4);
|
|
|
|
/* Check if the user is trying to read from the table limits */
|
|
if (read_size > table_len || offset > table_len - read_size) {
|
|
pr_debug("Read size exceeds the Table size limits (%llu vs. %llu)\n",
|
|
offset + read_size, table_len);
|
|
return -EINVAL;
|
|
}
|
|
|
|
while (off < read_size) {
|
|
err = cmd_start(dev, read_tbl->table_uid, opalmethod[OPAL_GET]);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTLIST);
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_STARTROW);
|
|
add_token_u64(&err, dev, offset + off); /* start row value */
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
|
|
add_token_u8(&err, dev, OPAL_STARTNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDROW);
|
|
|
|
len = min(max_read_size, (size_t)(read_size - off));
|
|
add_token_u64(&err, dev, offset + off + len); /* end row value
|
|
*/
|
|
add_token_u8(&err, dev, OPAL_ENDNAME);
|
|
add_token_u8(&err, dev, OPAL_ENDLIST);
|
|
|
|
if (err) {
|
|
pr_debug("Error building read table data command.\n");
|
|
break;
|
|
}
|
|
|
|
err = finalize_and_send(dev, read_table_data_cont);
|
|
if (err)
|
|
break;
|
|
|
|
/* len+1: This includes the NULL terminator at the end*/
|
|
if (dev->prev_d_len > len + 1) {
|
|
err = -EOVERFLOW;
|
|
break;
|
|
}
|
|
|
|
dst = (u8 __user *)(uintptr_t)read_tbl->data;
|
|
if (copy_to_user(dst + off, dev->prev_data, dev->prev_d_len)) {
|
|
pr_debug("Error copying data to userspace\n");
|
|
err = -EFAULT;
|
|
break;
|
|
}
|
|
dev->prev_data = NULL;
|
|
|
|
off += len;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int end_opal_session(struct opal_dev *dev, void *data)
|
|
{
|
|
int err = 0;
|
|
|
|
clear_opal_cmd(dev);
|
|
set_comid(dev, dev->comid);
|
|
add_token_u8(&err, dev, OPAL_ENDOFSESSION);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return finalize_and_send(dev, end_session_cont);
|
|
}
|
|
|
|
static int end_opal_session_error(struct opal_dev *dev)
|
|
{
|
|
const struct opal_step error_end_session = {
|
|
end_opal_session,
|
|
};
|
|
|
|
return execute_step(dev, &error_end_session, 0);
|
|
}
|
|
|
|
static inline void setup_opal_dev(struct opal_dev *dev)
|
|
{
|
|
dev->tsn = 0;
|
|
dev->hsn = 0;
|
|
dev->prev_data = NULL;
|
|
}
|
|
|
|
static int check_opal_support(struct opal_dev *dev)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = opal_discovery0_step(dev);
|
|
if (!ret)
|
|
dev->flags |= OPAL_FL_SUPPORTED;
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void clean_opal_dev(struct opal_dev *dev)
|
|
{
|
|
|
|
struct opal_suspend_data *suspend, *next;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
list_for_each_entry_safe(suspend, next, &dev->unlk_lst, node) {
|
|
list_del(&suspend->node);
|
|
kfree(suspend);
|
|
}
|
|
mutex_unlock(&dev->dev_lock);
|
|
}
|
|
|
|
void free_opal_dev(struct opal_dev *dev)
|
|
{
|
|
if (!dev)
|
|
return;
|
|
|
|
clean_opal_dev(dev);
|
|
kfree(dev->resp);
|
|
kfree(dev->cmd);
|
|
kfree(dev);
|
|
}
|
|
EXPORT_SYMBOL(free_opal_dev);
|
|
|
|
struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv)
|
|
{
|
|
struct opal_dev *dev;
|
|
|
|
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (!dev)
|
|
return NULL;
|
|
|
|
/*
|
|
* Presumably DMA-able buffers must be cache-aligned. Kmalloc makes
|
|
* sure the allocated buffer is DMA-safe in that regard.
|
|
*/
|
|
dev->cmd = kmalloc(IO_BUFFER_LENGTH, GFP_KERNEL);
|
|
if (!dev->cmd)
|
|
goto err_free_dev;
|
|
|
|
dev->resp = kmalloc(IO_BUFFER_LENGTH, GFP_KERNEL);
|
|
if (!dev->resp)
|
|
goto err_free_cmd;
|
|
|
|
INIT_LIST_HEAD(&dev->unlk_lst);
|
|
mutex_init(&dev->dev_lock);
|
|
dev->flags = 0;
|
|
dev->data = data;
|
|
dev->send_recv = send_recv;
|
|
if (check_opal_support(dev) != 0) {
|
|
pr_debug("Opal is not supported on this device\n");
|
|
goto err_free_resp;
|
|
}
|
|
|
|
return dev;
|
|
|
|
err_free_resp:
|
|
kfree(dev->resp);
|
|
|
|
err_free_cmd:
|
|
kfree(dev->cmd);
|
|
|
|
err_free_dev:
|
|
kfree(dev);
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(init_opal_dev);
|
|
|
|
static int opal_secure_erase_locking_range(struct opal_dev *dev,
|
|
struct opal_session_info *opal_session)
|
|
{
|
|
const struct opal_step erase_steps[] = {
|
|
{ start_auth_opal_session, opal_session },
|
|
{ get_active_key, &opal_session->opal_key.lr },
|
|
{ gen_key, },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
ret = opal_get_key(dev, &opal_session->opal_key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_get_discv(struct opal_dev *dev, struct opal_discovery *discv)
|
|
{
|
|
const struct opal_step discovery0_step = {
|
|
opal_discovery0, discv
|
|
};
|
|
int ret = 0;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_step(dev, &discovery0_step, 0);
|
|
mutex_unlock(&dev->dev_lock);
|
|
if (ret)
|
|
return ret;
|
|
return discv->size; /* modified to actual length of data */
|
|
}
|
|
|
|
static int opal_revertlsp(struct opal_dev *dev, struct opal_revert_lsp *rev)
|
|
{
|
|
/* controller will terminate session */
|
|
const struct opal_step steps[] = {
|
|
{ start_admin1LSP_opal_session, &rev->key },
|
|
{ revert_lsp, rev }
|
|
};
|
|
int ret;
|
|
|
|
ret = opal_get_key(dev, &rev->key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, steps, ARRAY_SIZE(steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_erase_locking_range(struct opal_dev *dev,
|
|
struct opal_session_info *opal_session)
|
|
{
|
|
const struct opal_step erase_steps[] = {
|
|
{ start_auth_opal_session, opal_session },
|
|
{ erase_locking_range, opal_session },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
ret = opal_get_key(dev, &opal_session->opal_key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_enable_disable_shadow_mbr(struct opal_dev *dev,
|
|
struct opal_mbr_data *opal_mbr)
|
|
{
|
|
u8 enable_disable = opal_mbr->enable_disable == OPAL_MBR_ENABLE ?
|
|
OPAL_TRUE : OPAL_FALSE;
|
|
|
|
const struct opal_step mbr_steps[] = {
|
|
{ start_admin1LSP_opal_session, &opal_mbr->key },
|
|
{ set_mbr_done, &enable_disable },
|
|
{ end_opal_session, },
|
|
{ start_admin1LSP_opal_session, &opal_mbr->key },
|
|
{ set_mbr_enable_disable, &enable_disable },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
if (opal_mbr->enable_disable != OPAL_MBR_ENABLE &&
|
|
opal_mbr->enable_disable != OPAL_MBR_DISABLE)
|
|
return -EINVAL;
|
|
|
|
ret = opal_get_key(dev, &opal_mbr->key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_set_mbr_done(struct opal_dev *dev,
|
|
struct opal_mbr_done *mbr_done)
|
|
{
|
|
u8 mbr_done_tf = mbr_done->done_flag == OPAL_MBR_DONE ?
|
|
OPAL_TRUE : OPAL_FALSE;
|
|
|
|
const struct opal_step mbr_steps[] = {
|
|
{ start_admin1LSP_opal_session, &mbr_done->key },
|
|
{ set_mbr_done, &mbr_done_tf },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
if (mbr_done->done_flag != OPAL_MBR_DONE &&
|
|
mbr_done->done_flag != OPAL_MBR_NOT_DONE)
|
|
return -EINVAL;
|
|
|
|
ret = opal_get_key(dev, &mbr_done->key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_write_shadow_mbr(struct opal_dev *dev,
|
|
struct opal_shadow_mbr *info)
|
|
{
|
|
const struct opal_step mbr_steps[] = {
|
|
{ start_admin1LSP_opal_session, &info->key },
|
|
{ write_shadow_mbr, info },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
if (info->size == 0)
|
|
return 0;
|
|
|
|
ret = opal_get_key(dev, &info->key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk)
|
|
{
|
|
struct opal_suspend_data *suspend;
|
|
|
|
suspend = kzalloc(sizeof(*suspend), GFP_KERNEL);
|
|
if (!suspend)
|
|
return -ENOMEM;
|
|
|
|
suspend->unlk = *lk_unlk;
|
|
suspend->lr = lk_unlk->session.opal_key.lr;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
add_suspend_info(dev, suspend);
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int opal_add_user_to_lr(struct opal_dev *dev,
|
|
struct opal_lock_unlock *lk_unlk)
|
|
{
|
|
const struct opal_step steps[] = {
|
|
{ start_admin1LSP_opal_session, &lk_unlk->session.opal_key },
|
|
{ add_user_to_lr, lk_unlk },
|
|
{ add_user_to_lr_ace, lk_unlk },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
if (lk_unlk->l_state != OPAL_RO &&
|
|
lk_unlk->l_state != OPAL_RW) {
|
|
pr_debug("Locking state was not RO or RW\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (lk_unlk->session.who < OPAL_USER1 ||
|
|
lk_unlk->session.who > OPAL_USER9) {
|
|
pr_debug("Authority was not within the range of users: %d\n",
|
|
lk_unlk->session.who);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (lk_unlk->session.sum) {
|
|
pr_debug("%s not supported in sum. Use setup locking range\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = opal_get_key(dev, &lk_unlk->session.opal_key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, steps, ARRAY_SIZE(steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal, bool psid)
|
|
{
|
|
/* controller will terminate session */
|
|
const struct opal_step revert_steps[] = {
|
|
{ start_SIDASP_opal_session, opal },
|
|
{ revert_tper, }
|
|
};
|
|
const struct opal_step psid_revert_steps[] = {
|
|
{ start_PSID_opal_session, opal },
|
|
{ revert_tper, }
|
|
};
|
|
|
|
int ret;
|
|
|
|
ret = opal_get_key(dev, opal);
|
|
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
if (psid)
|
|
ret = execute_steps(dev, psid_revert_steps,
|
|
ARRAY_SIZE(psid_revert_steps));
|
|
else
|
|
ret = execute_steps(dev, revert_steps,
|
|
ARRAY_SIZE(revert_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
/*
|
|
* If we successfully reverted lets clean
|
|
* any saved locking ranges.
|
|
*/
|
|
if (!ret)
|
|
clean_opal_dev(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __opal_lock_unlock(struct opal_dev *dev,
|
|
struct opal_lock_unlock *lk_unlk)
|
|
{
|
|
const struct opal_step unlock_steps[] = {
|
|
{ start_auth_opal_session, &lk_unlk->session },
|
|
{ lock_unlock_locking_range, lk_unlk },
|
|
{ end_opal_session, }
|
|
};
|
|
const struct opal_step unlock_sum_steps[] = {
|
|
{ start_auth_opal_session, &lk_unlk->session },
|
|
{ lock_unlock_locking_range_sum, lk_unlk },
|
|
{ end_opal_session, }
|
|
};
|
|
|
|
if (lk_unlk->session.sum)
|
|
return execute_steps(dev, unlock_sum_steps,
|
|
ARRAY_SIZE(unlock_sum_steps));
|
|
else
|
|
return execute_steps(dev, unlock_steps,
|
|
ARRAY_SIZE(unlock_steps));
|
|
}
|
|
|
|
static int __opal_set_mbr_done(struct opal_dev *dev, struct opal_key *key)
|
|
{
|
|
u8 mbr_done_tf = OPAL_TRUE;
|
|
const struct opal_step mbrdone_step[] = {
|
|
{ start_admin1LSP_opal_session, key },
|
|
{ set_mbr_done, &mbr_done_tf },
|
|
{ end_opal_session, }
|
|
};
|
|
|
|
return execute_steps(dev, mbrdone_step, ARRAY_SIZE(mbrdone_step));
|
|
}
|
|
|
|
static void opal_lock_check_for_saved_key(struct opal_dev *dev,
|
|
struct opal_lock_unlock *lk_unlk)
|
|
{
|
|
struct opal_suspend_data *iter;
|
|
|
|
if (lk_unlk->l_state != OPAL_LK ||
|
|
lk_unlk->session.opal_key.key_len > 0)
|
|
return;
|
|
|
|
/*
|
|
* Usually when closing a crypto device (eg: dm-crypt with LUKS) the
|
|
* volume key is not required, as it requires root privileges anyway,
|
|
* and root can deny access to a disk in many ways regardless.
|
|
* Requiring the volume key to lock the device is a peculiarity of the
|
|
* OPAL specification. Given we might already have saved the key if
|
|
* the user requested it via the 'IOC_OPAL_SAVE' ioctl, we can use
|
|
* that key to lock the device if no key was provided here, the
|
|
* locking range matches and the appropriate flag was passed with
|
|
* 'IOC_OPAL_SAVE'.
|
|
* This allows integrating OPAL with tools and libraries that are used
|
|
* to the common behaviour and do not ask for the volume key when
|
|
* closing a device.
|
|
*/
|
|
setup_opal_dev(dev);
|
|
list_for_each_entry(iter, &dev->unlk_lst, node) {
|
|
if ((iter->unlk.flags & OPAL_SAVE_FOR_LOCK) &&
|
|
iter->lr == lk_unlk->session.opal_key.lr &&
|
|
iter->unlk.session.opal_key.key_len > 0) {
|
|
lk_unlk->session.opal_key.key_len =
|
|
iter->unlk.session.opal_key.key_len;
|
|
memcpy(lk_unlk->session.opal_key.key,
|
|
iter->unlk.session.opal_key.key,
|
|
iter->unlk.session.opal_key.key_len);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int opal_lock_unlock(struct opal_dev *dev,
|
|
struct opal_lock_unlock *lk_unlk)
|
|
{
|
|
int ret;
|
|
|
|
if (lk_unlk->session.who > OPAL_USER9)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
opal_lock_check_for_saved_key(dev, lk_unlk);
|
|
ret = opal_get_key(dev, &lk_unlk->session.opal_key);
|
|
if (!ret)
|
|
ret = __opal_lock_unlock(dev, lk_unlk);
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal)
|
|
{
|
|
const struct opal_step owner_steps[] = {
|
|
{ start_anybodyASP_opal_session, },
|
|
{ get_msid_cpin_pin, },
|
|
{ end_opal_session, },
|
|
{ start_SIDASP_opal_session, opal },
|
|
{ set_sid_cpin_pin, opal },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
ret = opal_get_key(dev, opal);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, owner_steps, ARRAY_SIZE(owner_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_activate_lsp(struct opal_dev *dev,
|
|
struct opal_lr_act *opal_lr_act)
|
|
{
|
|
const struct opal_step active_steps[] = {
|
|
{ start_SIDASP_opal_session, &opal_lr_act->key },
|
|
{ get_lsp_lifecycle, },
|
|
{ activate_lsp, opal_lr_act },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS)
|
|
return -EINVAL;
|
|
|
|
ret = opal_get_key(dev, &opal_lr_act->key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, active_steps, ARRAY_SIZE(active_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_setup_locking_range(struct opal_dev *dev,
|
|
struct opal_user_lr_setup *opal_lrs)
|
|
{
|
|
const struct opal_step lr_steps[] = {
|
|
{ start_auth_opal_session, &opal_lrs->session },
|
|
{ setup_locking_range, opal_lrs },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
ret = opal_get_key(dev, &opal_lrs->session.opal_key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_locking_range_status(struct opal_dev *dev,
|
|
struct opal_lr_status *opal_lrst,
|
|
void __user *data)
|
|
{
|
|
const struct opal_step lr_steps[] = {
|
|
{ start_auth_opal_session, &opal_lrst->session },
|
|
{ locking_range_status, opal_lrst },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
/* skip session info when copying back to uspace */
|
|
if (!ret && copy_to_user(data + offsetof(struct opal_lr_status, range_start),
|
|
(void *)opal_lrst + offsetof(struct opal_lr_status, range_start),
|
|
sizeof(*opal_lrst) - offsetof(struct opal_lr_status, range_start))) {
|
|
pr_debug("Error copying status to userspace\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw)
|
|
{
|
|
const struct opal_step pw_steps[] = {
|
|
{ start_auth_opal_session, &opal_pw->session },
|
|
{ set_new_pw, &opal_pw->new_user_pw },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
if (opal_pw->session.who > OPAL_USER9 ||
|
|
opal_pw->new_user_pw.who > OPAL_USER9)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, pw_steps, ARRAY_SIZE(pw_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* update keyring and key store with new password */
|
|
ret = sed_write_key(OPAL_AUTH_KEY,
|
|
opal_pw->new_user_pw.opal_key.key,
|
|
opal_pw->new_user_pw.opal_key.key_len);
|
|
if (ret != -EOPNOTSUPP)
|
|
pr_warn("error updating SED key: %d\n", ret);
|
|
|
|
ret = update_sed_opal_key(OPAL_AUTH_KEY,
|
|
opal_pw->new_user_pw.opal_key.key,
|
|
opal_pw->new_user_pw.opal_key.key_len);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_activate_user(struct opal_dev *dev,
|
|
struct opal_session_info *opal_session)
|
|
{
|
|
const struct opal_step act_steps[] = {
|
|
{ start_admin1LSP_opal_session, &opal_session->opal_key },
|
|
{ internal_activate_user, opal_session },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret;
|
|
|
|
/* We can't activate Admin1 it's active as manufactured */
|
|
if (opal_session->who < OPAL_USER1 ||
|
|
opal_session->who > OPAL_USER9) {
|
|
pr_debug("Who was not a valid user: %d\n", opal_session->who);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = opal_get_key(dev, &opal_session->opal_key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
ret = execute_steps(dev, act_steps, ARRAY_SIZE(act_steps));
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool opal_unlock_from_suspend(struct opal_dev *dev)
|
|
{
|
|
struct opal_suspend_data *suspend;
|
|
bool was_failure = false;
|
|
int ret = 0;
|
|
|
|
if (!dev)
|
|
return false;
|
|
|
|
if (!(dev->flags & OPAL_FL_SUPPORTED))
|
|
return false;
|
|
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
|
|
list_for_each_entry(suspend, &dev->unlk_lst, node) {
|
|
dev->tsn = 0;
|
|
dev->hsn = 0;
|
|
|
|
ret = __opal_lock_unlock(dev, &suspend->unlk);
|
|
if (ret) {
|
|
pr_debug("Failed to unlock LR %hhu with sum %d\n",
|
|
suspend->unlk.session.opal_key.lr,
|
|
suspend->unlk.session.sum);
|
|
was_failure = true;
|
|
}
|
|
|
|
if (dev->flags & OPAL_FL_MBR_ENABLED) {
|
|
ret = __opal_set_mbr_done(dev, &suspend->unlk.session.opal_key);
|
|
if (ret)
|
|
pr_debug("Failed to set MBR Done in S3 resume\n");
|
|
}
|
|
}
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return was_failure;
|
|
}
|
|
EXPORT_SYMBOL(opal_unlock_from_suspend);
|
|
|
|
static int opal_read_table(struct opal_dev *dev,
|
|
struct opal_read_write_table *rw_tbl)
|
|
{
|
|
const struct opal_step read_table_steps[] = {
|
|
{ start_admin1LSP_opal_session, &rw_tbl->key },
|
|
{ read_table_data, rw_tbl },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret = 0;
|
|
|
|
if (!rw_tbl->size)
|
|
return ret;
|
|
|
|
return execute_steps(dev, read_table_steps,
|
|
ARRAY_SIZE(read_table_steps));
|
|
}
|
|
|
|
static int opal_write_table(struct opal_dev *dev,
|
|
struct opal_read_write_table *rw_tbl)
|
|
{
|
|
const struct opal_step write_table_steps[] = {
|
|
{ start_admin1LSP_opal_session, &rw_tbl->key },
|
|
{ write_table_data, rw_tbl },
|
|
{ end_opal_session, }
|
|
};
|
|
int ret = 0;
|
|
|
|
if (!rw_tbl->size)
|
|
return ret;
|
|
|
|
return execute_steps(dev, write_table_steps,
|
|
ARRAY_SIZE(write_table_steps));
|
|
}
|
|
|
|
static int opal_generic_read_write_table(struct opal_dev *dev,
|
|
struct opal_read_write_table *rw_tbl)
|
|
{
|
|
int ret, bit_set;
|
|
|
|
ret = opal_get_key(dev, &rw_tbl->key);
|
|
if (ret)
|
|
return ret;
|
|
mutex_lock(&dev->dev_lock);
|
|
setup_opal_dev(dev);
|
|
|
|
bit_set = fls64(rw_tbl->flags) - 1;
|
|
switch (bit_set) {
|
|
case OPAL_READ_TABLE:
|
|
ret = opal_read_table(dev, rw_tbl);
|
|
break;
|
|
case OPAL_WRITE_TABLE:
|
|
ret = opal_write_table(dev, rw_tbl);
|
|
break;
|
|
default:
|
|
pr_debug("Invalid bit set in the flag (%016llx).\n",
|
|
rw_tbl->flags);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&dev->dev_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int opal_get_status(struct opal_dev *dev, void __user *data)
|
|
{
|
|
struct opal_status sts = {0};
|
|
|
|
/*
|
|
* check_opal_support() error is not fatal,
|
|
* !dev->supported is a valid condition
|
|
*/
|
|
if (!check_opal_support(dev))
|
|
sts.flags = dev->flags;
|
|
if (copy_to_user(data, &sts, sizeof(sts))) {
|
|
pr_debug("Error copying status to userspace\n");
|
|
return -EFAULT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int opal_get_geometry(struct opal_dev *dev, void __user *data)
|
|
{
|
|
struct opal_geometry geo = {0};
|
|
|
|
if (check_opal_support(dev))
|
|
return -EINVAL;
|
|
|
|
geo.align = dev->align_required;
|
|
geo.logical_block_size = dev->logical_block_size;
|
|
geo.alignment_granularity = dev->align;
|
|
geo.lowest_aligned_lba = dev->lowest_lba;
|
|
|
|
if (copy_to_user(data, &geo, sizeof(geo))) {
|
|
pr_debug("Error copying geometry data to userspace\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
|
|
{
|
|
void *p;
|
|
int ret = -ENOTTY;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EACCES;
|
|
if (!dev)
|
|
return -EOPNOTSUPP;
|
|
if (!(dev->flags & OPAL_FL_SUPPORTED))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (cmd & IOC_IN) {
|
|
p = memdup_user(arg, _IOC_SIZE(cmd));
|
|
if (IS_ERR(p))
|
|
return PTR_ERR(p);
|
|
}
|
|
|
|
switch (cmd) {
|
|
case IOC_OPAL_SAVE:
|
|
ret = opal_save(dev, p);
|
|
break;
|
|
case IOC_OPAL_LOCK_UNLOCK:
|
|
ret = opal_lock_unlock(dev, p);
|
|
break;
|
|
case IOC_OPAL_TAKE_OWNERSHIP:
|
|
ret = opal_take_ownership(dev, p);
|
|
break;
|
|
case IOC_OPAL_ACTIVATE_LSP:
|
|
ret = opal_activate_lsp(dev, p);
|
|
break;
|
|
case IOC_OPAL_SET_PW:
|
|
ret = opal_set_new_pw(dev, p);
|
|
break;
|
|
case IOC_OPAL_ACTIVATE_USR:
|
|
ret = opal_activate_user(dev, p);
|
|
break;
|
|
case IOC_OPAL_REVERT_TPR:
|
|
ret = opal_reverttper(dev, p, false);
|
|
break;
|
|
case IOC_OPAL_LR_SETUP:
|
|
ret = opal_setup_locking_range(dev, p);
|
|
break;
|
|
case IOC_OPAL_ADD_USR_TO_LR:
|
|
ret = opal_add_user_to_lr(dev, p);
|
|
break;
|
|
case IOC_OPAL_ENABLE_DISABLE_MBR:
|
|
ret = opal_enable_disable_shadow_mbr(dev, p);
|
|
break;
|
|
case IOC_OPAL_MBR_DONE:
|
|
ret = opal_set_mbr_done(dev, p);
|
|
break;
|
|
case IOC_OPAL_WRITE_SHADOW_MBR:
|
|
ret = opal_write_shadow_mbr(dev, p);
|
|
break;
|
|
case IOC_OPAL_ERASE_LR:
|
|
ret = opal_erase_locking_range(dev, p);
|
|
break;
|
|
case IOC_OPAL_SECURE_ERASE_LR:
|
|
ret = opal_secure_erase_locking_range(dev, p);
|
|
break;
|
|
case IOC_OPAL_PSID_REVERT_TPR:
|
|
ret = opal_reverttper(dev, p, true);
|
|
break;
|
|
case IOC_OPAL_GENERIC_TABLE_RW:
|
|
ret = opal_generic_read_write_table(dev, p);
|
|
break;
|
|
case IOC_OPAL_GET_STATUS:
|
|
ret = opal_get_status(dev, arg);
|
|
break;
|
|
case IOC_OPAL_GET_LR_STATUS:
|
|
ret = opal_locking_range_status(dev, p, arg);
|
|
break;
|
|
case IOC_OPAL_GET_GEOMETRY:
|
|
ret = opal_get_geometry(dev, arg);
|
|
break;
|
|
case IOC_OPAL_REVERT_LSP:
|
|
ret = opal_revertlsp(dev, p);
|
|
break;
|
|
case IOC_OPAL_DISCOVERY:
|
|
ret = opal_get_discv(dev, p);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (cmd & IOC_IN)
|
|
kfree(p);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(sed_ioctl);
|
|
|
|
static int __init sed_opal_init(void)
|
|
{
|
|
struct key *kr;
|
|
char init_sed_key[OPAL_KEY_MAX];
|
|
int keylen = OPAL_KEY_MAX - 1;
|
|
|
|
kr = keyring_alloc(".sed_opal",
|
|
GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, current_cred(),
|
|
(KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW |
|
|
KEY_USR_READ | KEY_USR_SEARCH | KEY_USR_WRITE,
|
|
KEY_ALLOC_NOT_IN_QUOTA,
|
|
NULL, NULL);
|
|
if (IS_ERR(kr))
|
|
return PTR_ERR(kr);
|
|
|
|
sed_opal_keyring = kr;
|
|
|
|
if (sed_read_key(OPAL_AUTH_KEY, init_sed_key, &keylen) < 0) {
|
|
memset(init_sed_key, '\0', sizeof(init_sed_key));
|
|
keylen = OPAL_KEY_MAX - 1;
|
|
}
|
|
|
|
return update_sed_opal_key(OPAL_AUTH_KEY, init_sed_key, keylen);
|
|
}
|
|
late_initcall(sed_opal_init);
|