/* $NetBSD: xenio.h,v 1.11.22.1 2020/05/31 10:39:35 martin Exp $ */
/******************************************************************************
* privcmd.h
*
* Copyright (c) 2003-2004, K A Fraser
*
* This file may be distributed separately from the Linux kernel, or
* incorporated into other software packages, subject to the following license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this source file (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef __XEN_XENIO_H__
#define __XEN_XENIO_H__
/* Interface to /proc/xen/privcmd */
#include <sys/ioccom.h>
typedef struct privcmd_hypercall
{
unsigned long op;
unsigned long arg[5];
long retval;
} privcmd_hypercall_t;
typedef struct privcmd_mmap_entry {
unsigned long va;
unsigned long mfn;
unsigned long npages;
} privcmd_mmap_entry_t;
typedef struct privcmd_mmap {
int num;
domid_t dom; /* target domain */
privcmd_mmap_entry_t *entry;
} privcmd_mmap_t;
typedef struct privcmd_mmapbatch {
int num; /* number of pages to populate */
domid_t dom; /* target domain */
unsigned long addr; /* virtual address */
unsigned long *arr; /* array of mfns - top nibble set on err */
} privcmd_mmapbatch_t;
typedef struct privcmd_mmapbatch_v2 {
int num; /* number of pages to populate */
domid_t dom; /* target domain */
uint64_t addr; /* virtual address */
const xen_pfn_t *arr; /* array of mfns */
int *err; /* array of error codes */
} privcmd_mmapbatch_v2_t;
typedef struct privcmd_blkmsg
{
unsigned long op;
void *buf;
int buf_size;
} privcmd_blkmsg_t;
/*
* @cmd: IOCTL_PRIVCMD_HYPERCALL
* @arg: &privcmd_hypercall_t
* Return: Value returned from execution of the specified hypercall.
*/
#define IOCTL_PRIVCMD_HYPERCALL \
_IOWR('P', 0, privcmd_hypercall_t)
#if defined(_KERNEL)
/* compat */
#define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN_OLD \
_IO('P', 1)
typedef struct oprivcmd_hypercall
{
unsigned long op;
unsigned long arg[5];
} oprivcmd_hypercall_t;
#define IOCTL_PRIVCMD_HYPERCALL_OLD \
_IOWR('P', 0, oprivcmd_hypercall_t)
#endif /* defined(_KERNEL) */
#define IOCTL_PRIVCMD_MMAP \
_IOW('P', 2, privcmd_mmap_t)
#define IOCTL_PRIVCMD_MMAPBATCH \
_IOW('P', 3, privcmd_mmapbatch_t)
#define IOCTL_PRIVCMD_GET_MACH2PHYS_START_MFN \
_IOR('P', 4, unsigned long)
/*
* @cmd: IOCTL_PRIVCMD_INITDOMAIN_EVTCHN
* @arg: n/a
* Return: Port associated with domain-controller end of control event channel
* for the initial domain.
*/
#define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN \
_IOR('P', 5, int)
#define IOCTL_PRIVCMD_MMAPBATCH_V2 \
_IOW('P', 6, privcmd_mmapbatch_v2_t)
/*
* @cmd: IOCTL_PRIVCMD_MMAP_RESOURCE
* @arg &privcmd_mmap_resource_t
* Return:
* map the specified resource at the provided virtual address
*/
typedef struct privcmd_mmap_resource {
domid_t dom;
uint32_t type;
uint32_t id;
uint32_t idx;
uint64_t num;
uint64_t addr;
} privcmd_mmap_resource_t;
#define IOCTL_PRIVCMD_MMAP_RESOURCE \
_IOW('P', 7, privcmd_mmap_resource_t)
/*
* @cmd: IOCTL_GNTDEV_MMAP_GRANT_REF
* @arg &ioctl_gntdev_mmap_grant_ref
* Return:
* map the grant references at the virtual address provided by caller
* The grant ref already exists (e.g. comes from a remote domain)
*/
struct ioctl_gntdev_grant_ref {
/* The domain ID of the grant to be mapped. */
uint32_t domid;
/* The grant reference of the grant to be mapped. */
uint32_t ref;
};
struct ioctl_gntdev_grant_notify {
ssize_t offset;
uint32_t action;
uint32_t event_channel_port;
};
#define UNMAP_NOTIFY_CLEAR_BYTE 0x1
#define UNMAP_NOTIFY_SEND_EVENT 0x2
struct ioctl_gntdev_mmap_grant_ref {
/* The number of grants to be mapped. */
uint32_t count;
uint32_t pad;
/* The virtual address where they should be mapped */
void *va;
/* notify action */
struct ioctl_gntdev_grant_notify notify;
/* Array of grant references, of size @count. */
struct ioctl_gntdev_grant_ref *refs;
};
#define IOCTL_GNTDEV_MMAP_GRANT_REF \
_IOW('P', 8, struct ioctl_gntdev_mmap_grant_ref)
/*
* @cmd: IOCTL_GNTDEV_ALLOC_GRANT_REF
* @arg &ioctl_gntdev_alloc_grant_ref
* Return:
* Allocate local memory and grant it to a remote domain.
* local memory is mmaped at the virtual address provided by caller
*/
struct ioctl_gntdev_alloc_grant_ref {
/* IN parameters */
uint16_t domid;
uint16_t flags;
uint32_t count;
void *va;
/* notify action */
struct ioctl_gntdev_grant_notify notify;
/* Variable OUT parameter */
uint32_t *gref_ids;
};
#define IOCTL_GNTDEV_ALLOC_GRANT_REF \
_IOW('P', 9, struct ioctl_gntdev_alloc_grant_ref)
#define GNTDEV_ALLOC_FLAG_WRITABLE 0x01
/* Interface to /dev/xenevt */
/* EVTCHN_RESET: Clear and reinit the event buffer. Clear error condition. */
#define EVTCHN_RESET _IO('E', 1)
/* EVTCHN_BIND: Bind to the specified event-channel port. */
#define EVTCHN_BIND _IOW('E', 2, unsigned long)
/* EVTCHN_UNBIND: Unbind from the specified event-channel port. */
#define EVTCHN_UNBIND _IOW('E', 3, unsigned long)
#endif /* __XEN_XENIO_H__ */