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1813 | decky | 1 | /* |
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 | |||
29 | #ifndef __xen32_HYPERCALL_H__ |
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30 | #define __xen32_HYPERCALL_H__ |
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31 | |||
32 | #include <arch/types.h> |
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1816 | decky | 33 | #include <macros.h> |
1813 | decky | 34 | |
1816 | decky | 35 | |
1817 | decky | 36 | typedef uint16_t domid_t; |
37 | |||
38 | |||
1829 | decky | 39 | typedef struct { |
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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1831 | decky | 43 | void *address; /**< Code offset */ |
1829 | decky | 44 | } trap_info_t; |
45 | |||
46 | |||
1831 | decky | 47 | typedef struct { |
48 | evtchn_t port; |
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49 | } evtchn_send_t; |
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50 | |||
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 | |||
58 | |||
1829 | decky | 59 | #define XEN_SET_TRAP_TABLE 0 |
1824 | decky | 60 | #define XEN_MMU_UPDATE 1 |
1829 | decky | 61 | #define XEN_SET_CALLBACKS 4 |
1824 | decky | 62 | #define XEN_UPDATE_VA_MAPPING 14 |
1831 | decky | 63 | #define XEN_EVENT_CHANNEL_OP 16 |
1830 | decky | 64 | #define XEN_VERSION 17 |
1824 | decky | 65 | #define XEN_CONSOLE_IO 18 |
66 | #define XEN_VM_ASSIST 21 |
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67 | #define XEN_MMUEXT_OP 26 |
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1817 | decky | 68 | |
69 | |||
1816 | decky | 70 | /* |
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 | |||
76 | |||
1817 | decky | 77 | #define MMUEXT_PIN_L1_TABLE 0 |
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 | |||
93 | |||
1831 | decky | 94 | #define EVTCHNOP_SEND 4 |
95 | |||
96 | |||
1824 | decky | 97 | #define UVMF_NONE 0 /**< No flushing at all */ |
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 | |||
105 | |||
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 | |||
115 | |||
1817 | decky | 116 | #define DOMID_SELF (0x7FF0U) |
117 | #define DOMID_IO (0x7FF1U) |
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118 | |||
119 | |||
1830 | decky | 120 | #define force_evtchn_callback() ((void) xen_version(0, 0)) |
121 | |||
1813 | decky | 122 | #define hypercall0(id) \ |
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 | |||
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 | |||
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 | |||
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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1816 | decky | 173 | "3" (p3) \ |
1813 | decky | 174 | : "memory" \ |
175 | ); \ |
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176 | ret; \ |
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177 | }) |
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178 | |||
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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1816 | decky | 192 | "4" (p4) \ |
1813 | decky | 193 | : "memory" \ |
194 | ); \ |
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195 | ret; \ |
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196 | }) |
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197 | |||
198 | #define hypercall5(id, p1, p2, p3, p4, p5) \ |
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199 | ({ \ |
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1816 | decky | 200 | unative_t ret, __ign1, __ign2, __ign3, __ign4, __ign5; \ |
1813 | decky | 201 | asm volatile ( \ |
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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1816 | decky | 213 | "5" (p5) \ |
1813 | decky | 214 | : "memory" \ |
215 | ); \ |
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216 | ret; \ |
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217 | }) |
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218 | |||
219 | |||
1817 | decky | 220 | static inline int xen_console_io(const unsigned int cmd, const unsigned int count, const char *str) |
1813 | decky | 221 | { |
222 | return hypercall3(XEN_CONSOLE_IO, cmd, count, str); |
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223 | } |
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224 | |||
1824 | decky | 225 | static inline int xen_vm_assist(const unsigned int cmd, const unsigned int type) |
1817 | decky | 226 | { |
1824 | decky | 227 | return hypercall2(XEN_VM_ASSIST, cmd, type); |
1817 | decky | 228 | } |
229 | |||
1829 | decky | 230 | static inline int xen_set_callbacks(const unsigned int event_selector, const void *event_address, const unsigned int failsafe_selector, void *failsafe_address) |
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 | |||
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 | |||
1830 | decky | 240 | static inline int xen_version(const unsigned int cmd, const void *arg) |
241 | { |
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242 | return hypercall2(XEN_VERSION, cmd, arg); |
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243 | } |
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244 | |||
1831 | decky | 245 | static inline int xen_notify_remote(evtchn_t channel) |
246 | { |
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247 | evtchn_op_t op; |
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248 | |||
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 | |||
1813 | decky | 254 | #endif |