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The virtio IOMMU is a para-virtualized device, allowing to send IOMMU requests such as map/unmap over virtio transport without emulating page tables. This implementation handles ATTACH, DETACH, MAP and UNMAP requests. The bulk of the code transforms calls coming from the IOMMU API into corresponding virtio requests. Mappings are kept in an interval tree instead of page tables. A little more work is required for modular and x86 support, so for the moment the driver depends on CONFIG_VIRTIO=y and CONFIG_ARM64. Tested-by: Bharat Bhushan <bharat.bhushan@nxp.com> Tested-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
49 lines
2.4 KiB
C
49 lines
2.4 KiB
C
#ifndef _LINUX_VIRTIO_IDS_H
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#define _LINUX_VIRTIO_IDS_H
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/*
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* Virtio IDs
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*
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* This header is BSD licensed so anyone can use the definitions to implement
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* compatible drivers/servers.
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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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* 3. Neither the name of IBM nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 IBM 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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#define VIRTIO_ID_NET 1 /* virtio net */
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#define VIRTIO_ID_BLOCK 2 /* virtio block */
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#define VIRTIO_ID_CONSOLE 3 /* virtio console */
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#define VIRTIO_ID_RNG 4 /* virtio rng */
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#define VIRTIO_ID_BALLOON 5 /* virtio balloon */
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#define VIRTIO_ID_RPMSG 7 /* virtio remote processor messaging */
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#define VIRTIO_ID_SCSI 8 /* virtio scsi */
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#define VIRTIO_ID_9P 9 /* 9p virtio console */
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#define VIRTIO_ID_RPROC_SERIAL 11 /* virtio remoteproc serial link */
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#define VIRTIO_ID_CAIF 12 /* Virtio caif */
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#define VIRTIO_ID_GPU 16 /* virtio GPU */
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#define VIRTIO_ID_INPUT 18 /* virtio input */
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#define VIRTIO_ID_VSOCK 19 /* virtio vsock transport */
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#define VIRTIO_ID_CRYPTO 20 /* virtio crypto */
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#define VIRTIO_ID_IOMMU 23 /* virtio IOMMU */
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#endif /* _LINUX_VIRTIO_IDS_H */
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