1 /* 2 * Declarations for to Hexagon Virtal Machine. 3 * 4 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 and 8 * only version 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18 * 02110-1301, USA. 19 */ 20 21 #ifndef ASM_HEXAGON_VM_H 22 #define ASM_HEXAGON_VM_H 23 24 /* 25 * In principle, a Linux kernel for the VM could 26 * selectively define the virtual instructions 27 * as inline assembler macros, but for a first pass, 28 * we'll use subroutines for both the VM and the native 29 * kernels. It's costing a subroutine call/return, 30 * but it makes for a single set of entry points 31 * for tracing/debugging. 32 */ 33 34 #define HVM_TRAP1_VMVERSION 0 35 #define HVM_TRAP1_VMRTE 1 36 #define HVM_TRAP1_VMSETVEC 2 37 #define HVM_TRAP1_VMSETIE 3 38 #define HVM_TRAP1_VMGETIE 4 39 #define HVM_TRAP1_VMINTOP 5 40 #define HVM_TRAP1_VMCLRMAP 10 41 #define HVM_TRAP1_VMNEWMAP 11 42 #define HVM_TRAP1_FORMERLY_VMWIRE 12 43 #define HVM_TRAP1_VMCACHE 13 44 #define HVM_TRAP1_VMGETTIME 14 45 #define HVM_TRAP1_VMSETTIME 15 46 #define HVM_TRAP1_VMWAIT 16 47 #define HVM_TRAP1_VMYIELD 17 48 #define HVM_TRAP1_VMSTART 18 49 #define HVM_TRAP1_VMSTOP 19 50 #define HVM_TRAP1_VMVPID 20 51 #define HVM_TRAP1_VMSETREGS 21 52 #define HVM_TRAP1_VMGETREGS 22 53 #define HVM_TRAP1_VMTIMEROP 24 54 55 #ifndef __ASSEMBLY__ 56 57 enum VM_CACHE_OPS { 58 hvmc_ickill, 59 hvmc_dckill, 60 hvmc_l2kill, 61 hvmc_dccleaninva, 62 hvmc_icinva, 63 hvmc_idsync, 64 hvmc_fetch_cfg 65 }; 66 67 enum VM_INT_OPS { 68 hvmi_nop, 69 hvmi_globen, 70 hvmi_globdis, 71 hvmi_locen, 72 hvmi_locdis, 73 hvmi_affinity, 74 hvmi_get, 75 hvmi_peek, 76 hvmi_status, 77 hvmi_post, 78 hvmi_clear 79 }; 80 81 extern void _K_VM_event_vector(void); 82 83 void __vmrte(void); 84 long __vmsetvec(void *); 85 long __vmsetie(long); 86 long __vmgetie(void); 87 long __vmintop(enum VM_INT_OPS, long, long, long, long); 88 long __vmclrmap(void *, unsigned long); 89 long __vmnewmap(void *); 90 long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len); 91 unsigned long long __vmgettime(void); 92 long __vmsettime(unsigned long long); 93 long __vmstart(void *, void *); 94 void __vmstop(void); 95 long __vmwait(void); 96 void __vmyield(void); 97 long __vmvpid(void); 98 99 static inline long __vmcache_ickill(void) 100 { 101 return __vmcache(hvmc_ickill, 0, 0); 102 } 103 104 static inline long __vmcache_dckill(void) 105 { 106 return __vmcache(hvmc_dckill, 0, 0); 107 } 108 109 static inline long __vmcache_l2kill(void) 110 { 111 return __vmcache(hvmc_l2kill, 0, 0); 112 } 113 114 static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len) 115 { 116 return __vmcache(hvmc_dccleaninva, addr, len); 117 } 118 119 static inline long __vmcache_icinva(unsigned long addr, unsigned long len) 120 { 121 return __vmcache(hvmc_icinva, addr, len); 122 } 123 124 static inline long __vmcache_idsync(unsigned long addr, 125 unsigned long len) 126 { 127 return __vmcache(hvmc_idsync, addr, len); 128 } 129 130 static inline long __vmcache_fetch_cfg(unsigned long val) 131 { 132 return __vmcache(hvmc_fetch_cfg, val, 0); 133 } 134 135 /* interrupt operations */ 136 137 static inline long __vmintop_nop(void) 138 { 139 return __vmintop(hvmi_nop, 0, 0, 0, 0); 140 } 141 142 static inline long __vmintop_globen(long i) 143 { 144 return __vmintop(hvmi_globen, i, 0, 0, 0); 145 } 146 147 static inline long __vmintop_globdis(long i) 148 { 149 return __vmintop(hvmi_globdis, i, 0, 0, 0); 150 } 151 152 static inline long __vmintop_locen(long i) 153 { 154 return __vmintop(hvmi_locen, i, 0, 0, 0); 155 } 156 157 static inline long __vmintop_locdis(long i) 158 { 159 return __vmintop(hvmi_locdis, i, 0, 0, 0); 160 } 161 162 static inline long __vmintop_affinity(long i, long cpu) 163 { 164 return __vmintop(hvmi_affinity, i, cpu, 0, 0); 165 } 166 167 static inline long __vmintop_get(void) 168 { 169 return __vmintop(hvmi_get, 0, 0, 0, 0); 170 } 171 172 static inline long __vmintop_peek(void) 173 { 174 return __vmintop(hvmi_peek, 0, 0, 0, 0); 175 } 176 177 static inline long __vmintop_status(long i) 178 { 179 return __vmintop(hvmi_status, i, 0, 0, 0); 180 } 181 182 static inline long __vmintop_post(long i) 183 { 184 return __vmintop(hvmi_post, i, 0, 0, 0); 185 } 186 187 static inline long __vmintop_clear(long i) 188 { 189 return __vmintop(hvmi_clear, i, 0, 0, 0); 190 } 191 192 #else /* Only assembly code should reference these */ 193 194 #endif /* __ASSEMBLY__ */ 195 196 /* 197 * Constants for virtual instruction parameters and return values 198 */ 199 200 /* vmnewmap arguments */ 201 202 #define VM_TRANS_TYPE_LINEAR 0 203 #define VM_TRANS_TYPE_TABLE 1 204 #define VM_TLB_INVALIDATE_FALSE 0 205 #define VM_TLB_INVALIDATE_TRUE 1 206 207 /* vmsetie arguments */ 208 209 #define VM_INT_DISABLE 0 210 #define VM_INT_ENABLE 1 211 212 /* vmsetimask arguments */ 213 214 #define VM_INT_UNMASK 0 215 #define VM_INT_MASK 1 216 217 #define VM_NEWMAP_TYPE_LINEAR 0 218 #define VM_NEWMAP_TYPE_PGTABLES 1 219 220 221 /* 222 * Event Record definitions useful to both C and Assembler 223 */ 224 225 /* VMEST Layout */ 226 227 #define HVM_VMEST_UM_SFT 31 228 #define HVM_VMEST_UM_MSK 1 229 #define HVM_VMEST_IE_SFT 30 230 #define HVM_VMEST_IE_MSK 1 231 #define HVM_VMEST_SS_SFT 29 232 #define HVM_VMEST_SS_MSK 1 233 #define HVM_VMEST_EVENTNUM_SFT 16 234 #define HVM_VMEST_EVENTNUM_MSK 0xff 235 #define HVM_VMEST_CAUSE_SFT 0 236 #define HVM_VMEST_CAUSE_MSK 0xffff 237 238 /* 239 * The initial program gets to find a system environment descriptor 240 * on its stack when it begins execution. The first word is a version 241 * code to indicate what is there. Zero means nothing more. 242 */ 243 244 #define HEXAGON_VM_SED_NULL 0 245 246 /* 247 * Event numbers for vector binding 248 */ 249 250 #define HVM_EV_RESET 0 251 #define HVM_EV_MACHCHECK 1 252 #define HVM_EV_GENEX 2 253 #define HVM_EV_TRAP 8 254 #define HVM_EV_INTR 15 255 /* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */ 256 #define HVM_EV_INTR_0 16 257 #define HVM_MAX_INTR 240 258 259 /* 260 * Cause values for General Exception 261 */ 262 263 #define HVM_GE_C_BUS 0x01 264 #define HVM_GE_C_XPROT 0x11 265 #define HVM_GE_C_XUSER 0x14 266 #define HVM_GE_C_INVI 0x15 267 #define HVM_GE_C_PRIVI 0x1B 268 #define HVM_GE_C_XMAL 0x1C 269 #define HVM_GE_C_WREG 0x1D 270 #define HVM_GE_C_PCAL 0x1E 271 #define HVM_GE_C_RMAL 0x20 272 #define HVM_GE_C_WMAL 0x21 273 #define HVM_GE_C_RPROT 0x22 274 #define HVM_GE_C_WPROT 0x23 275 #define HVM_GE_C_RUSER 0x24 276 #define HVM_GE_C_WUSER 0x25 277 #define HVM_GE_C_CACHE 0x28 278 279 /* 280 * Cause codes for Machine Check 281 */ 282 283 #define HVM_MCHK_C_DOWN 0x00 284 #define HVM_MCHK_C_BADSP 0x01 285 #define HVM_MCHK_C_BADEX 0x02 286 #define HVM_MCHK_C_BADPT 0x03 287 #define HVM_MCHK_C_REGWR 0x29 288 289 #endif 290