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xenio.h revision 1.8 
      1 /*	$NetBSD: xenio.h,v 1.8 2010/12/15 14:45:47 cegger Exp $	*/
      2 
      3 /******************************************************************************
      4  * privcmd.h
      5  *
      6  * Copyright (c) 2003-2004, K A Fraser
      7  *
      8  * This file may be distributed separately from the Linux kernel, or
      9  * incorporated into other software packages, subject to the following license:
     10  *
     11  * Permission is hereby granted, free of charge, to any person obtaining a copy
     12  * of this source file (the "Software"), to deal in the Software without
     13  * restriction, including without limitation the rights to use, copy, modify,
     14  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
     15  * and to permit persons to whom the Software is furnished to do so, subject to
     16  * the following conditions:
     17  *
     18  * The above copyright notice and this permission notice shall be included in
     19  * all copies or substantial portions of the Software.
     20  *
     21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     24  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     26  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     27  * IN THE SOFTWARE.
     28  */
     29 
     30 #ifndef __XEN_XENIO_H__
     31 #define __XEN_XENIO_H__
     32 
     33 /* Interface to /proc/xen/privcmd */
     34 
     35 typedef struct privcmd_hypercall
     36 {
     37     unsigned long op;
     38     unsigned long arg[5];
     39     long retval;
     40 } privcmd_hypercall_t;
     41 
     42 typedef struct privcmd_mmap_entry {
     43     unsigned long va;
     44     unsigned long mfn;
     45     unsigned long npages;
     46 } privcmd_mmap_entry_t;
     47 
     48 typedef struct privcmd_mmap {
     49     int num;
     50     domid_t dom; /* target domain */
     51     privcmd_mmap_entry_t *entry;
     52 } privcmd_mmap_t;
     53 
     54 typedef struct privcmd_mmapbatch {
     55     int num;     /* number of pages to populate */
     56     domid_t dom; /* target domain */
     57     unsigned long addr;  /* virtual address */
     58     unsigned long *arr; /* array of mfns - top nibble set on err */
     59 } privcmd_mmapbatch_t;
     60 
     61 typedef struct privcmd_mmapbatch_v2 {
     62     int num;     /* number of pages to populate */
     63     domid_t dom; /* target domain */
     64     uint64_t addr;  /* virtual address */
     65     const xen_pfn_t *arr; /* array of mfns */
     66     int *err; /* array of error codes */
     67 } privcmd_mmapbatch_v2_t;
     68 
     69 typedef struct privcmd_blkmsg
     70 {
     71     unsigned long op;
     72     void         *buf;
     73     int           buf_size;
     74 } privcmd_blkmsg_t;
     75 
     76 /*
     77  * @cmd: IOCTL_PRIVCMD_HYPERCALL
     78  * @arg: &privcmd_hypercall_t
     79  * Return: Value returned from execution of the specified hypercall.
     80  */
     81 #define IOCTL_PRIVCMD_HYPERCALL         \
     82     _IOWR('P', 0, privcmd_hypercall_t)
     83 
     84 #if defined(_KERNEL)
     85 /* compat */
     86 #define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN_OLD \
     87     _IO('P', 1)
     88 
     89 typedef struct oprivcmd_hypercall
     90 {
     91     unsigned long op;
     92     unsigned long arg[5];
     93 } oprivcmd_hypercall_t;
     94 
     95 #define IOCTL_PRIVCMD_HYPERCALL_OLD       \
     96     _IOWR('P', 0, oprivcmd_hypercall_t)
     97 #endif /* defined(_KERNEL) */
     98 
     99 #define IOCTL_PRIVCMD_MMAP             \
    100     _IOW('P', 2, privcmd_mmap_t)
    101 #define IOCTL_PRIVCMD_MMAPBATCH        \
    102     _IOW('P', 3, privcmd_mmapbatch_t)
    103 #define IOCTL_PRIVCMD_GET_MACH2PHYS_START_MFN \
    104     _IOR('P', 4, unsigned long)
    105 
    106 /*
    107  * @cmd: IOCTL_PRIVCMD_INITDOMAIN_EVTCHN
    108  * @arg: n/a
    109  * Return: Port associated with domain-controller end of control event channel
    110  *         for the initial domain.
    111  */
    112 #define IOCTL_PRIVCMD_INITDOMAIN_EVTCHN \
    113     _IOR('P', 5, int)
    114 #define IOCTL_PRIVCMD_MMAPBATCH_V2      \
    115     _IOW('P", 6, privcmd_mmapbatch_v2_t)
    116 
    117 /* Interface to /dev/xenevt */
    118 /* EVTCHN_RESET: Clear and reinit the event buffer. Clear error condition. */
    119 #define EVTCHN_RESET  _IO('E', 1)
    120 /* EVTCHN_BIND: Bind to the specified event-channel port. */
    121 #define EVTCHN_BIND   _IOW('E', 2, unsigned long)
    122 /* EVTCHN_UNBIND: Unbind from the specified event-channel port. */
    123 #define EVTCHN_UNBIND _IOW('E', 3, unsigned long)
    124 
    125 #endif /* __XEN_XENIO_H__ */
    126