sys/arch/xen/include/hypervisor.h

   1 /*      $NetBSD: hypervisor.h,v 1.30 2009/07/29 12:02:06 cegger Exp $   */
   2
   3 /*
   4  * Copyright (c) 2006 Manuel Bouyer.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  */
  27
  28 /*
  29  *
  30  * Communication to/from hypervisor.
  31  *
  32  * Copyright (c) 2002-2004, K A Fraser
  33  *
  34  * Permission is hereby granted, free of charge, to any person obtaining a copy
  35  * of this source file (the "Software"), to deal in the Software without
  36  * restriction, including without limitation the rights to use, copy, modify,
  37  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  38  * and to permit persons to whom the Software is furnished to do so, subject to
  39  * the following conditions:
  40  *
  41  * The above copyright notice and this permission notice shall be included in
  42  * all copies or substantial portions of the Software.
  43  *
  44  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  45  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  46  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  47  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  48  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  49  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  50  * IN THE SOFTWARE.
  51  */
  52
  53
  54 #ifndef _XEN_HYPERVISOR_H_
  55 #define _XEN_HYPERVISOR_H_
  56
  57 #include "opt_xen.h"
  58
  59
  60 struct hypervisor_attach_args {
  61         const char              *haa_busname;
  62 };
  63
  64 struct xencons_attach_args {
  65         const char              *xa_device;
  66 };
  67
  68 struct xen_npx_attach_args {
  69         const char              *xa_device;
  70 };
  71
  72
  73 #define u8 uint8_t
  74 #define u16 uint16_t
  75 #define u32 uint32_t
  76 #define u64 uint64_t
  77 #define s8 int8_t
  78 #define s16 int16_t
  79 #define s32 int32_t
  80 #define s64 int64_t
  81
  82 #include <xen/xen3-public/xen.h>
  83 #include <xen/xen3-public/sched.h>
  84 #include <xen/xen3-public/platform.h>
  85 #if __XEN_INTERFACE_VERSION__ < 0x00030204
  86 #include <xen/xen3-public/dom0_ops.h>
  87 #endif
  88 #include <xen/xen3-public/event_channel.h>
  89 #include <xen/xen3-public/physdev.h>
  90 #include <xen/xen3-public/memory.h>
  91 #include <xen/xen3-public/io/netif.h>
  92 #include <xen/xen3-public/io/blkif.h>
  93
  94 #include <machine/hypercalls.h>
  95
  96 #undef u8
  97 #undef u16
  98 #undef u32
  99 #undef u64
 100 #undef s8
 101 #undef s16
 102 #undef s32
 103 #undef s64
 104
 105
 106
 107 /*
 108  * a placeholder for the start of day information passed up from the hypervisor
 109  */
 110 union start_info_union
 111 {
 112     start_info_t start_info;
 113     char padding[512];
 114 };
 115 extern union start_info_union start_info_union;
 116 #define xen_start_info (start_info_union.start_info)
 117
 118 /* For use in guest OSes. */
 119 extern volatile shared_info_t *HYPERVISOR_shared_info;
 120
 121
 122 /* Structural guest handles introduced in 0x00030201. */
 123 #if __XEN_INTERFACE_VERSION__ >= 0x00030201
 124 #define xenguest_handle(hnd)    (hnd).p
 125 #else
 126 #define xenguest_handle(hnd)    hnd
 127 #endif
 128
 129 /* hypervisor.c */
 130 struct intrframe;
 131 void do_hypervisor_callback(struct intrframe *regs);
 132 void hypervisor_enable_event(unsigned int);
 133
 134 /* hypervisor_machdep.c */
 135 void hypervisor_unmask_event(unsigned int);
 136 void hypervisor_mask_event(unsigned int);
 137 void hypervisor_clear_event(unsigned int);
 138 void hypervisor_enable_ipl(unsigned int);
 139 void hypervisor_set_ipending(uint32_t, int, int);
 140 void hypervisor_machdep_attach(void);
 141
 142 /*
 143  * Force a proper event-channel callback from Xen after clearing the
 144  * callback mask. We do this in a very simple manner, by making a call
 145  * down into Xen. The pending flag will be checked by Xen on return.
 146  */
 147 static __inline void hypervisor_force_callback(void)
 148 {
 149         (void)HYPERVISOR_xen_version(0, (void*)0);
 150 } __attribute__((no_instrument_function)) /* used by mcount */
 151
 152 static __inline void
 153 hypervisor_notify_via_evtchn(unsigned int port)
 154 {
 155         evtchn_op_t op;
 156
 157         op.cmd = EVTCHNOP_send;
 158         op.u.send.port = port;
 159         (void)HYPERVISOR_event_channel_op(&op);
 160 }
 161
 162 #endif /* _XEN_HYPERVISOR_H_ */