2019-04-30 18:42:39 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2017-02-03 19:50:31 +00:00
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/*
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* Copyright © 2016 Intel Corporation
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*
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* Authors:
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* Rafael Antognolli <rafael.antognolli@intel.com>
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* Scott Bauer <scott.bauer@intel.com>
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*/
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#ifndef LINUX_OPAL_H
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#define LINUX_OPAL_H
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#include <uapi/linux/sed-opal.h>
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2022-12-05 19:16:48 +00:00
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#include <linux/compiler_types.h>
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#include <linux/types.h>
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2017-02-03 19:50:31 +00:00
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struct opal_dev;
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2017-02-17 12:59:39 +00:00
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typedef int (sec_send_recv)(void *data, u16 spsp, u8 secp, void *buffer,
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size_t len, bool send);
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2017-02-03 19:50:31 +00:00
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#ifdef CONFIG_BLK_SED_OPAL
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2017-02-22 17:15:06 +00:00
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void free_opal_dev(struct opal_dev *dev);
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2017-02-03 19:50:31 +00:00
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bool opal_unlock_from_suspend(struct opal_dev *dev);
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2017-02-17 12:59:39 +00:00
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struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
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2017-02-15 00:29:36 +00:00
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int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
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2017-02-03 19:50:31 +00:00
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2023-07-21 21:15:34 +00:00
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#define OPAL_AUTH_KEY "opal-boot-pin"
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#define OPAL_AUTH_KEY_PREV "opal-boot-pin-prev"
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2017-02-03 19:50:31 +00:00
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static inline bool is_sed_ioctl(unsigned int cmd)
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{
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switch (cmd) {
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case IOC_OPAL_SAVE:
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case IOC_OPAL_LOCK_UNLOCK:
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case IOC_OPAL_TAKE_OWNERSHIP:
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case IOC_OPAL_ACTIVATE_LSP:
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case IOC_OPAL_SET_PW:
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case IOC_OPAL_ACTIVATE_USR:
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case IOC_OPAL_REVERT_TPR:
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case IOC_OPAL_LR_SETUP:
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case IOC_OPAL_ADD_USR_TO_LR:
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case IOC_OPAL_ENABLE_DISABLE_MBR:
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case IOC_OPAL_ERASE_LR:
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case IOC_OPAL_SECURE_ERASE_LR:
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2019-06-27 22:30:02 +00:00
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case IOC_OPAL_PSID_REVERT_TPR:
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2019-05-21 20:46:44 +00:00
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case IOC_OPAL_MBR_DONE:
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2019-05-21 20:46:45 +00:00
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case IOC_OPAL_WRITE_SHADOW_MBR:
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2019-10-31 16:13:21 +00:00
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case IOC_OPAL_GENERIC_TABLE_RW:
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2022-08-16 14:07:13 +00:00
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case IOC_OPAL_GET_STATUS:
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2023-04-05 11:12:23 +00:00
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case IOC_OPAL_GET_LR_STATUS:
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sed-opal: geometry feature reporting command
Locking range start and locking range length
attributes may be require to satisfy restrictions
exposed by OPAL2 geometry feature reporting.
Geometry reporting feature is described in TCG OPAL SSC,
section 3.1.1.4 (ALIGN, LogicalBlockSize, AlignmentGranularity
and LowestAlignedLBA).
4.3.5.2.1.1 RangeStart Behavior:
[ StartAlignment = (RangeStart modulo AlignmentGranularity) - LowestAlignedLBA ]
When processing a Set method or CreateRow method on the Locking
table for a non-Global Range row, if:
a) the AlignmentRequired (ALIGN above) column in the LockingInfo
table is TRUE;
b) RangeStart is non-zero; and
c) StartAlignment is non-zero, then the method SHALL fail and
return an error status code INVALID_PARAMETER.
4.3.5.2.1.2 RangeLength Behavior:
If RangeStart is zero, then
[ LengthAlignment = (RangeLength modulo AlignmentGranularity) - LowestAlignedLBA ]
If RangeStart is non-zero, then
[ LengthAlignment = (RangeLength modulo AlignmentGranularity) ]
When processing a Set method or CreateRow method on the Locking
table for a non-Global Range row, if:
a) the AlignmentRequired (ALIGN above) column in the LockingInfo
table is TRUE;
b) RangeLength is non-zero; and
c) LengthAlignment is non-zero, then the method SHALL fail and
return an error status code INVALID_PARAMETER
In userspace we stuck to logical block size reported by general
block device (via sysfs or ioctl), but we can not read
'AlignmentGranularity' or 'LowestAlignedLBA' anywhere else and
we need to get those values from sed-opal interface otherwise
we will not be able to report or avoid locking range setup
INVALID_PARAMETER errors above.
Signed-off-by: Ondrej Kozina <okozina@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Tested-by: Milan Broz <gmazyland@gmail.com>
Link: https://lore.kernel.org/r/20230411090931.9193-2-okozina@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-04-11 09:09:31 +00:00
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case IOC_OPAL_GET_GEOMETRY:
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2023-07-21 21:15:32 +00:00
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case IOC_OPAL_DISCOVERY:
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2023-07-21 21:15:33 +00:00
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case IOC_OPAL_REVERT_LSP:
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2017-02-03 19:50:31 +00:00
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return true;
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}
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return false;
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}
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#else
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2017-02-22 17:15:06 +00:00
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static inline void free_opal_dev(struct opal_dev *dev)
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{
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}
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2017-02-03 19:50:31 +00:00
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static inline bool is_sed_ioctl(unsigned int cmd)
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{
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return false;
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}
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static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
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2017-02-15 00:29:36 +00:00
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void __user *ioctl_ptr)
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2017-02-03 19:50:31 +00:00
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{
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return 0;
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}
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static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
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{
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return false;
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}
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2017-02-17 12:59:39 +00:00
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#define init_opal_dev(data, send_recv) NULL
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2017-02-03 19:50:31 +00:00
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#endif /* CONFIG_BLK_SED_OPAL */
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#endif /* LINUX_OPAL_H */
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