c9e4d25052
The function removes the range of addresses from GAS. Right now it is unused. The initial version of the patch was extracted from the stalled work for integration of DMAR and bhyve, see D25672. Having the function in the main tree would allow it to co-evolve with other active changes to the IOMMU driver. Requested by: alc Reviewed by: alc, dougm Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D36001
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2013 The FreeBSD Foundation
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*
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* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DEV_IOMMU_IOMMU_GAS_H_
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#define _DEV_IOMMU_IOMMU_GAS_H_
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/* Map flags */
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#define IOMMU_MF_CANWAIT 0x0001
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#define IOMMU_MF_CANSPLIT 0x0002
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#define IOMMU_MF_RMRR 0x0004
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#define IOMMU_PGF_WAITOK 0x0001
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#define IOMMU_PGF_ZERO 0x0002
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#define IOMMU_PGF_ALLOC 0x0004
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#define IOMMU_PGF_NOALLOC 0x0008
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#define IOMMU_PGF_OBJL 0x0010
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#define IOMMU_MAP_ENTRY_PLACE 0x0001 /* Fake entry */
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#define IOMMU_MAP_ENTRY_RMRR 0x0002 /* Permanent, not linked by
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dmamap_link */
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#define IOMMU_MAP_ENTRY_MAP 0x0004 /* Busdma created, linked by
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dmamap_link */
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#define IOMMU_MAP_ENTRY_UNMAPPED 0x0010 /* No backing pages */
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#define IOMMU_MAP_ENTRY_REMOVING 0x0020 /* In process of removal by
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iommu_gas_remove() */
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#define IOMMU_MAP_ENTRY_READ 0x1000 /* Read permitted */
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#define IOMMU_MAP_ENTRY_WRITE 0x2000 /* Write permitted */
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#define IOMMU_MAP_ENTRY_SNOOP 0x4000 /* Snoop */
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#define IOMMU_MAP_ENTRY_TM 0x8000 /* Transient */
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#endif /* !_DEV_IOMMU_IOMMU_GAS_H_ */
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