| 1 | /* $NetBSD: hypervisor.h,v 1.44 2014/06/14 02:53:02 pgoyette 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/xen-public/xen.h> |
| 83 | #include <xen/xen-public/sched.h> |
| 84 | #include <xen/xen-public/platform.h> |
| 85 | #if __XEN_INTERFACE_VERSION__ < 0x00030204 |
| 86 | #include <xen/xen-public/dom0_ops.h> |
| 87 | #endif |
| 88 | #include <xen/xen-public/event_channel.h> |
| 89 | #include <xen/xen-public/physdev.h> |
| 90 | #include <xen/xen-public/memory.h> |
| 91 | #include <xen/xen-public/io/netif.h> |
| 92 | #include <xen/xen-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 | struct cpu_info; |
| 132 | void do_hypervisor_callback(struct intrframe *regs); |
| 133 | void hypervisor_enable_event(unsigned int); |
| 134 | |
| 135 | extern int xen_version; |
| 136 | #define XEN_MAJOR(x) (((x) & 0xffff0000) >> 16) |
| 137 | #define XEN_MINOR(x) ((x) & 0x0000ffff) |
| 138 | |
| 139 | /* |
| 140 | * Does the hypervisor we're running on support an api |
| 141 | * call at the requested version number ? |
| 142 | */ |
| 143 | #define XEN_VERSION_SUPPORTED(major, minor) \ |
| 144 | (XEN_MAJOR(xen_version) > (major) || \ |
| 145 | (XEN_MAJOR(xen_version) == (major) && \ |
| 146 | XEN_MINOR(xen_version) >= (minor))) |
| 147 | |
| 148 | /* hypervisor_machdep.c */ |
| 149 | void hypervisor_send_event(struct cpu_info *, unsigned int); |
| 150 | void hypervisor_unmask_event(unsigned int); |
| 151 | void hypervisor_mask_event(unsigned int); |
| 152 | void hypervisor_clear_event(unsigned int); |
| 153 | void hypervisor_enable_ipl(unsigned int); |
| 154 | void hypervisor_set_ipending(uint32_t, int, int); |
| 155 | void hypervisor_machdep_attach(void); |
| 156 | void hypervisor_machdep_resume(void); |
| 157 | |
| 158 | /* |
| 159 | * Force a proper event-channel callback from Xen after clearing the |
| 160 | * callback mask. We do this in a very simple manner, by making a call |
| 161 | * down into Xen. The pending flag will be checked by Xen on return. |
| 162 | */ |
| 163 | static __inline void hypervisor_force_callback(void) |
| 164 | { |
| 165 | (void)HYPERVISOR_xen_version(0, (void*)0); |
| 166 | } __attribute__((no_instrument_function)) /* used by mcount */ |
| 167 | |
| 168 | static __inline void |
| 169 | hypervisor_notify_via_evtchn(unsigned int port) |
| 170 | { |
| 171 | evtchn_op_t op; |
| 172 | |
| 173 | op.cmd = EVTCHNOP_send; |
| 174 | op.u.send.port = port; |
| 175 | (void)HYPERVISOR_event_channel_op(&op); |
| 176 | } |
| 177 | |
| 178 | #endif /* _XEN_HYPERVISOR_H_ */ |
| 179 | |