| 1 | /*
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| 2 | * Copyright (C) 2006 Martin Decky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #ifndef __xen32_HYPERCALL_H__
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| 30 | #define __xen32_HYPERCALL_H__
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| 31 |
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| 32 | #include <arch/types.h>
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| 33 | #include <macros.h>
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| 34 |
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| 35 |
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| 36 | typedef uint16_t domid_t;
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| 37 |
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| 38 |
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| 39 | typedef struct {
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| 40 | uint8_t vector; /**< Exception vector */
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| 41 | uint8_t flags; /**< 0-3: privilege level; 4: clear event enable */
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| 42 | uint16_t cs; /**< Code selector */
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| 43 | void *address; /**< Code offset */
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| 44 | } trap_info_t;
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| 45 |
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| 46 |
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| 47 | typedef struct {
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| 48 | evtchn_t port;
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| 49 | } evtchn_send_t;
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| 50 |
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| 51 | typedef struct {
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| 52 | uint32_t cmd;
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| 53 | union {
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| 54 | evtchn_send_t send;
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| 55 | };
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| 56 | } evtchn_op_t;
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| 57 |
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| 58 |
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| 59 | #define XEN_SET_TRAP_TABLE 0
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| 60 | #define XEN_MMU_UPDATE 1
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| 61 | #define XEN_SET_CALLBACKS 4
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| 62 | #define XEN_UPDATE_VA_MAPPING 14
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| 63 | #define XEN_EVENT_CHANNEL_OP 16
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| 64 | #define XEN_VERSION 17
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| 65 | #define XEN_CONSOLE_IO 18
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| 66 | #define XEN_VM_ASSIST 21
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| 67 | #define XEN_MMUEXT_OP 26
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| 68 |
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| 69 |
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| 70 | /*
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| 71 | * Commands for XEN_CONSOLE_IO
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| 72 | */
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| 73 | #define CONSOLE_IO_WRITE 0
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| 74 | #define CONSOLE_IO_READ 1
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| 75 |
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| 76 |
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| 77 | #define MMUEXT_PIN_L1_TABLE 0
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| 78 | #define MMUEXT_PIN_L2_TABLE 1
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| 79 | #define MMUEXT_PIN_L3_TABLE 2
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| 80 | #define MMUEXT_PIN_L4_TABLE 3
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| 81 | #define MMUEXT_UNPIN_TABLE 4
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| 82 | #define MMUEXT_NEW_BASEPTR 5
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| 83 | #define MMUEXT_TLB_FLUSH_LOCAL 6
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| 84 | #define MMUEXT_INVLPG_LOCAL 7
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| 85 | #define MMUEXT_TLB_FLUSH_MULTI 8
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| 86 | #define MMUEXT_INVLPG_MULTI 9
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| 87 | #define MMUEXT_TLB_FLUSH_ALL 10
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| 88 | #define MMUEXT_INVLPG_ALL 11
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| 89 | #define MMUEXT_FLUSH_CACHE 12
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| 90 | #define MMUEXT_SET_LDT 13
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| 91 | #define MMUEXT_NEW_USER_BASEPTR 15
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| 92 |
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| 93 |
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| 94 | #define EVTCHNOP_SEND 4
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| 95 |
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| 96 |
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| 97 | #define UVMF_NONE 0 /**< No flushing at all */
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| 98 | #define UVMF_TLB_FLUSH 1 /**< Flush entire TLB(s) */
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| 99 | #define UVMF_INVLPG 2 /**< Flush only one entry */
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| 100 | #define UVMF_FLUSHTYPE_MASK 3
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| 101 | #define UVMF_MULTI 0 /**< Flush subset of TLBs */
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| 102 | #define UVMF_LOCAL 0 /**< Flush local TLB */
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| 103 | #define UVMF_ALL (1 << 2) /**< Flush all TLBs */
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| 104 |
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| 105 |
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| 106 | /*
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| 107 | * Commands to XEN_VM_ASSIST
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| 108 | */
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| 109 | #define VMASST_CMD_ENABLE 0
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| 110 | #define VMASST_CMD_DISABLE 1
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| 111 | #define VMASST_TYPE_4GB_SEGMENTS 0
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| 112 | #define VMASST_TYPE_4GB_SEGMENTS_NOTIFY 1
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| 113 | #define VMASST_TYPE_WRITABLE_PAGETABLES 2
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| 114 |
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| 115 |
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| 116 | #define DOMID_SELF (0x7FF0U)
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| 117 | #define DOMID_IO (0x7FF1U)
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| 118 |
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| 119 |
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| 120 | #define force_evtchn_callback() ((void) xen_version(0, 0))
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| 121 |
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| 122 | #define hypercall0(id) \
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| 123 | ({ \
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| 124 | unative_t ret; \
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| 125 | asm volatile ( \
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| 126 | "call hypercall_page + (" STRING(id) " * 32)\n" \
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| 127 | : "=a" (ret) \
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| 128 | : \
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| 129 | : "memory" \
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| 130 | ); \
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| 131 | ret; \
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| 132 | })
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| 133 |
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| 134 | #define hypercall1(id, p1) \
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| 135 | ({ \
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| 136 | unative_t ret, __ign1; \
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| 137 | asm volatile ( \
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| 138 | "call hypercall_page + (" STRING(id) " * 32)\n" \
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| 139 | : "=a" (ret), \
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| 140 | "=b" (__ign1) \
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| 141 | : "1" (p1) \
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| 142 | : "memory" \
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| 143 | ); \
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| 144 | ret; \
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| 145 | })
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| 146 |
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| 147 | #define hypercall2(id, p1, p2) \
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| 148 | ({ \
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| 149 | unative_t ret, __ign1, __ign2; \
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| 150 | asm volatile ( \
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| 151 | "call hypercall_page + (" STRING(id) " * 32)\n" \
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| 152 | : "=a" (ret), \
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| 153 | "=b" (__ign1), \
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| 154 | "=c" (__ign2) \
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| 155 | : "1" (p1), \
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| 156 | "2" (p2) \
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| 157 | : "memory" \
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| 158 | ); \
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| 159 | ret; \
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| 160 | })
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| 161 |
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| 162 | #define hypercall3(id, p1, p2, p3) \
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| 163 | ({ \
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| 164 | unative_t ret, __ign1, __ign2, __ign3; \
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| 165 | asm volatile ( \
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| 166 | "call hypercall_page + (" STRING(id) " * 32)\n" \
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| 167 | : "=a" (ret), \
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| 168 | "=b" (__ign1), \
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| 169 | "=c" (__ign2), \
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| 170 | "=d" (__ign3) \
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| 171 | : "1" (p1), \
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| 172 | "2" (p2), \
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| 173 | "3" (p3) \
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| 174 | : "memory" \
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| 175 | ); \
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| 176 | ret; \
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| 177 | })
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| 178 |
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| 179 | #define hypercall4(id, p1, p2, p3, p4) \
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| 180 | ({ \
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| 181 | unative_t ret, __ign1, __ign2, __ign3, __ign4; \
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| 182 | asm volatile ( \
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| 183 | "call hypercall_page + (" STRING(id) " * 32)\n" \
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| 184 | : "=a" (ret), \
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| 185 | "=b" (__ign1), \
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| 186 | "=c" (__ign2), \
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| 187 | "=d" (__ign3), \
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| 188 | "=S" (__ign4) \
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| 189 | : "1" (p1), \
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| 190 | "2" (p2), \
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| 191 | "3" (p3), \
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| 192 | "4" (p4) \
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| 193 | : "memory" \
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| 194 | ); \
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| 195 | ret; \
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| 196 | })
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| 197 |
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| 198 | #define hypercall5(id, p1, p2, p3, p4, p5) \
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| 199 | ({ \
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| 200 | unative_t ret, __ign1, __ign2, __ign3, __ign4, __ign5; \
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| 201 | asm volatile ( \
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| 202 | "call hypercall_page + (" STRING(id) " * 32)\n" \
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| 203 | : "=a" (ret), \
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| 204 | "=b" (__ign1), \
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| 205 | "=c" (__ign2), \
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| 206 | "=d" (__ign3), \
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| 207 | "=S" (__ign4), \
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| 208 | "=D" (__ign5) \
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| 209 | : "1" (p1), \
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| 210 | "2" (p2), \
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| 211 | "3" (p3), \
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| 212 | "4" (p4), \
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| 213 | "5" (p5) \
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| 214 | : "memory" \
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| 215 | ); \
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| 216 | ret; \
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| 217 | })
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| 218 |
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| 219 |
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| 220 | static inline int xen_console_io(const unsigned int cmd, const unsigned int count, const char *str)
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| 221 | {
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| 222 | return hypercall3(XEN_CONSOLE_IO, cmd, count, str);
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| 223 | }
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| 224 |
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| 225 | static inline int xen_vm_assist(const unsigned int cmd, const unsigned int type)
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| 226 | {
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| 227 | return hypercall2(XEN_VM_ASSIST, cmd, type);
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| 228 | }
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| 229 |
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| 230 | static inline int xen_set_callbacks(const unsigned int event_selector, const void *event_address, const unsigned int failsafe_selector, void *failsafe_address)
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| 231 | {
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| 232 | return hypercall4(XEN_SET_CALLBACKS, event_selector, event_address, failsafe_selector, failsafe_address);
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| 233 | }
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| 234 |
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| 235 | static inline int xen_set_trap_table(const trap_info_t *table)
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| 236 | {
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| 237 | return hypercall1(XEN_SET_TRAP_TABLE, table);
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| 238 | }
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| 239 |
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| 240 | static inline int xen_version(const unsigned int cmd, const void *arg)
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| 241 | {
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| 242 | return hypercall2(XEN_VERSION, cmd, arg);
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| 243 | }
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| 244 |
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| 245 | static inline int xen_notify_remote(evtchn_t channel)
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| 246 | {
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| 247 | evtchn_op_t op;
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| 248 |
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| 249 | op.cmd = EVTCHNOP_SEND;
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| 250 | op.send.port = channel;
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| 251 | return hypercall1(XEN_EVENT_CHANNEL_OP, &op);
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| 252 | }
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| 253 |
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| 254 | #endif
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