| 1 | /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause */ |
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| 2 | /* |
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| 3 | * Definitions for virtio-pmem devices. |
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| 4 | * |
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| 5 | * Copyright (C) 2019 Red Hat, Inc. |
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| 6 | * |
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| 7 | * Author(s): Pankaj Gupta <pagupta@redhat.com> |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef _UAPI_LINUX_VIRTIO_PMEM_H |
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| 11 | #define _UAPI_LINUX_VIRTIO_PMEM_H |
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| 12 | |
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| 13 | #include <linux/types.h> |
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| 14 | #include <linux/virtio_ids.h> |
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| 15 | #include <linux/virtio_config.h> |
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| 16 | |
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| 17 | /* Feature bits */ |
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| 18 | /* guest physical address range will be indicated as shared memory region 0 */ |
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| 19 | #define VIRTIO_PMEM_F_SHMEM_REGION 0 |
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| 20 | |
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| 21 | /* shmid of the shared memory region corresponding to the pmem */ |
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| 22 | #define VIRTIO_PMEM_SHMEM_REGION_ID 0 |
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| 23 | |
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| 24 | struct virtio_pmem_config { |
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| 25 | __le64 start; |
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| 26 | __le64 size; |
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| 27 | }; |
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| 28 | |
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| 29 | #define VIRTIO_PMEM_REQ_TYPE_FLUSH 0 |
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| 30 | |
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| 31 | struct virtio_pmem_resp { |
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| 32 | /* Host return status corresponding to flush request */ |
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| 33 | __le32 ret; |
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| 34 | }; |
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| 35 | |
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| 36 | struct virtio_pmem_req { |
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| 37 | /* command type */ |
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| 38 | __le32 type; |
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| 39 | }; |
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| 40 | |
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| 41 | #endif |
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| 42 | |
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