0e8ff7c962
IOCTL_PRIVCMD_MMAPBATCH_V2 IOCTL_PRIVCMD_MMAP_RESOURCE IOCTL_GNTDEV_MMAP_GRANT_REF IOCTL_GNTDEV_ALLOC_GRANT_REF
212 lines
5.9 KiB
C
212 lines
5.9 KiB
C
/* $NetBSD: xenio.h,v 1.12 2020/05/26 10:11:56 bouyer Exp $ */
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/******************************************************************************
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* privcmd.h
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*
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* Copyright (c) 2003-2004, K A Fraser
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*
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* This file may be distributed separately from the Linux kernel, or
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* incorporated into other software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef __XEN_XENIO_H__
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#define __XEN_XENIO_H__
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/* Interface to /proc/xen/privcmd */
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#include <sys/ioccom.h>
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typedef struct privcmd_hypercall
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{
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unsigned long op;
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unsigned long arg[5];
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long retval;
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} privcmd_hypercall_t;
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typedef struct privcmd_mmap_entry {
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unsigned long va;
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unsigned long mfn;
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unsigned long npages;
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} privcmd_mmap_entry_t;
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typedef struct privcmd_mmap {
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int num;
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domid_t dom; /* target domain */
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privcmd_mmap_entry_t *entry;
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} privcmd_mmap_t;
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typedef struct privcmd_mmapbatch {
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int num; /* number of pages to populate */
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domid_t dom; /* target domain */
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unsigned long addr; /* virtual address */
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unsigned long *arr; /* array of mfns - top nibble set on err */
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} privcmd_mmapbatch_t;
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typedef struct privcmd_mmapbatch_v2 {
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int num; /* number of pages to populate */
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domid_t dom; /* target domain */
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uint64_t addr; /* virtual address */
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const xen_pfn_t *arr; /* array of mfns */
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int *err; /* array of error codes */
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} privcmd_mmapbatch_v2_t;
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typedef struct privcmd_blkmsg
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{
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unsigned long op;
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void *buf;
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int buf_size;
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} privcmd_blkmsg_t;
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/*
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* @cmd: IOCTL_PRIVCMD_HYPERCALL
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* @arg: &privcmd_hypercall_t
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* Return: Value returned from execution of the specified hypercall.
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*/
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#define IOCTL_PRIVCMD_HYPERCALL \
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_IOWR('P', 0, privcmd_hypercall_t)
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#if defined(_KERNEL)
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/* compat */
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#define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN_OLD \
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_IO('P', 1)
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typedef struct oprivcmd_hypercall
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{
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unsigned long op;
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unsigned long arg[5];
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} oprivcmd_hypercall_t;
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#define IOCTL_PRIVCMD_HYPERCALL_OLD \
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_IOWR('P', 0, oprivcmd_hypercall_t)
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#endif /* defined(_KERNEL) */
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#define IOCTL_PRIVCMD_MMAP \
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_IOW('P', 2, privcmd_mmap_t)
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#define IOCTL_PRIVCMD_MMAPBATCH \
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_IOW('P', 3, privcmd_mmapbatch_t)
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#define IOCTL_PRIVCMD_GET_MACH2PHYS_START_MFN \
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_IOR('P', 4, unsigned long)
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/*
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* @cmd: IOCTL_PRIVCMD_INITDOMAIN_EVTCHN
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* @arg: n/a
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* Return: Port associated with domain-controller end of control event channel
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* for the initial domain.
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*/
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#define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN \
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_IOR('P', 5, int)
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#define IOCTL_PRIVCMD_MMAPBATCH_V2 \
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_IOW('P', 6, privcmd_mmapbatch_v2_t)
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/*
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* @cmd: IOCTL_PRIVCMD_MMAP_RESOURCE
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* @arg &privcmd_mmap_resource_t
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* Return:
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* map the specified resource at the provided virtual address
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*/
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typedef struct privcmd_mmap_resource {
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domid_t dom;
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uint32_t type;
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uint32_t id;
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uint32_t idx;
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uint64_t num;
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uint64_t addr;
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} privcmd_mmap_resource_t;
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#define IOCTL_PRIVCMD_MMAP_RESOURCE \
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_IOW('P', 7, privcmd_mmap_resource_t)
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/*
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* @cmd: IOCTL_GNTDEV_MMAP_GRANT_REF
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* @arg &ioctl_gntdev_mmap_grant_ref
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* Return:
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* map the grant references at the virtual address provided by caller
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* The grant ref already exists (e.g. comes from a remote domain)
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*/
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struct ioctl_gntdev_grant_ref {
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/* The domain ID of the grant to be mapped. */
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uint32_t domid;
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/* The grant reference of the grant to be mapped. */
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uint32_t ref;
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};
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struct ioctl_gntdev_grant_notify {
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ssize_t offset;
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uint32_t action;
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uint32_t event_channel_port;
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};
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#define UNMAP_NOTIFY_CLEAR_BYTE 0x1
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#define UNMAP_NOTIFY_SEND_EVENT 0x2
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struct ioctl_gntdev_mmap_grant_ref {
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/* The number of grants to be mapped. */
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uint32_t count;
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uint32_t pad;
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/* The virtual address where they should be mapped */
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void *va;
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/* notify action */
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struct ioctl_gntdev_grant_notify notify;
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/* Array of grant references, of size @count. */
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struct ioctl_gntdev_grant_ref *refs;
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};
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#define IOCTL_GNTDEV_MMAP_GRANT_REF \
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_IOW('P', 8, struct ioctl_gntdev_mmap_grant_ref)
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/*
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* @cmd: IOCTL_GNTDEV_ALLOC_GRANT_REF
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* @arg &ioctl_gntdev_alloc_grant_ref
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* Return:
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* Allocate local memory and grant it to a remote domain.
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* local memory is mmaped at the virtual address provided by caller
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*/
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struct ioctl_gntdev_alloc_grant_ref {
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/* IN parameters */
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uint16_t domid;
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uint16_t flags;
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uint32_t count;
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void *va;
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/* notify action */
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struct ioctl_gntdev_grant_notify notify;
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/* Variable OUT parameter */
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uint32_t *gref_ids;
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};
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#define IOCTL_GNTDEV_ALLOC_GRANT_REF \
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_IOW('P', 9, struct ioctl_gntdev_alloc_grant_ref)
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#define GNTDEV_ALLOC_FLAG_WRITABLE 0x01
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/* Interface to /dev/xenevt */
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/* EVTCHN_RESET: Clear and reinit the event buffer. Clear error condition. */
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#define EVTCHN_RESET _IO('E', 1)
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/* EVTCHN_BIND: Bind to the specified event-channel port. */
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#define EVTCHN_BIND _IOW('E', 2, unsigned long)
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/* EVTCHN_UNBIND: Unbind from the specified event-channel port. */
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#define EVTCHN_UNBIND _IOW('E', 3, unsigned long)
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#endif /* __XEN_XENIO_H__ */
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