1 /* 2 * Declarations for to Hexagon Virtal Machine. 3 * 4 * Copyright (c) 2010-2011, 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 /* 35 * Lets make this stuff visible only if configured, 36 * so we can unconditionally include the file. 37 */ 38 39 #ifndef __ASSEMBLY__ 40 41 enum VM_CACHE_OPS { 42 ickill, 43 dckill, 44 l2kill, 45 dccleaninva, 46 icinva, 47 idsync, 48 fetch_cfg 49 }; 50 51 enum VM_INT_OPS { 52 nop, 53 globen, 54 globdis, 55 locen, 56 locdis, 57 affinity, 58 get, 59 peek, 60 status, 61 post, 62 clear 63 }; 64 65 extern void _K_VM_event_vector(void); 66 67 void __vmrte(void); 68 long __vmsetvec(void *); 69 long __vmsetie(long); 70 long __vmgetie(void); 71 long __vmintop(enum VM_INT_OPS, long, long, long, long); 72 long __vmclrmap(void *, unsigned long); 73 long __vmnewmap(void *); 74 long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len); 75 unsigned long long __vmgettime(void); 76 long __vmsettime(unsigned long long); 77 long __vmstart(void *, void *); 78 void __vmstop(void); 79 long __vmwait(void); 80 void __vmyield(void); 81 long __vmvpid(void); 82 83 static inline long __vmcache_ickill(void) 84 { 85 return __vmcache(ickill, 0, 0); 86 } 87 88 static inline long __vmcache_dckill(void) 89 { 90 return __vmcache(dckill, 0, 0); 91 } 92 93 static inline long __vmcache_l2kill(void) 94 { 95 return __vmcache(l2kill, 0, 0); 96 } 97 98 static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len) 99 { 100 return __vmcache(dccleaninva, addr, len); 101 } 102 103 static inline long __vmcache_icinva(unsigned long addr, unsigned long len) 104 { 105 return __vmcache(icinva, addr, len); 106 } 107 108 static inline long __vmcache_idsync(unsigned long addr, 109 unsigned long len) 110 { 111 return __vmcache(idsync, addr, len); 112 } 113 114 static inline long __vmcache_fetch_cfg(unsigned long val) 115 { 116 return __vmcache(fetch_cfg, val, 0); 117 } 118 119 /* interrupt operations */ 120 121 static inline long __vmintop_nop(void) 122 { 123 return __vmintop(nop, 0, 0, 0, 0); 124 } 125 126 static inline long __vmintop_globen(long i) 127 { 128 return __vmintop(globen, i, 0, 0, 0); 129 } 130 131 static inline long __vmintop_globdis(long i) 132 { 133 return __vmintop(globdis, i, 0, 0, 0); 134 } 135 136 static inline long __vmintop_locen(long i) 137 { 138 return __vmintop(locen, i, 0, 0, 0); 139 } 140 141 static inline long __vmintop_locdis(long i) 142 { 143 return __vmintop(locdis, i, 0, 0, 0); 144 } 145 146 static inline long __vmintop_affinity(long i, long cpu) 147 { 148 return __vmintop(locdis, i, cpu, 0, 0); 149 } 150 151 static inline long __vmintop_get(void) 152 { 153 return __vmintop(get, 0, 0, 0, 0); 154 } 155 156 static inline long __vmintop_peek(void) 157 { 158 return __vmintop(peek, 0, 0, 0, 0); 159 } 160 161 static inline long __vmintop_status(long i) 162 { 163 return __vmintop(status, i, 0, 0, 0); 164 } 165 166 static inline long __vmintop_post(long i) 167 { 168 return __vmintop(post, i, 0, 0, 0); 169 } 170 171 static inline long __vmintop_clear(long i) 172 { 173 return __vmintop(clear, i, 0, 0, 0); 174 } 175 176 #else /* Only assembly code should reference these */ 177 178 #define HVM_TRAP1_VMRTE 1 179 #define HVM_TRAP1_VMSETVEC 2 180 #define HVM_TRAP1_VMSETIE 3 181 #define HVM_TRAP1_VMGETIE 4 182 #define HVM_TRAP1_VMINTOP 5 183 #define HVM_TRAP1_VMCLRMAP 10 184 #define HVM_TRAP1_VMNEWMAP 11 185 #define HVM_TRAP1_FORMERLY_VMWIRE 12 186 #define HVM_TRAP1_VMCACHE 13 187 #define HVM_TRAP1_VMGETTIME 14 188 #define HVM_TRAP1_VMSETTIME 15 189 #define HVM_TRAP1_VMWAIT 16 190 #define HVM_TRAP1_VMYIELD 17 191 #define HVM_TRAP1_VMSTART 18 192 #define HVM_TRAP1_VMSTOP 19 193 #define HVM_TRAP1_VMVPID 20 194 #define HVM_TRAP1_VMSETREGS 21 195 #define HVM_TRAP1_VMGETREGS 22 196 197 #endif /* __ASSEMBLY__ */ 198 199 /* 200 * Constants for virtual instruction parameters and return values 201 */ 202 203 /* vmsetie arguments */ 204 205 #define VM_INT_DISABLE 0 206 #define VM_INT_ENABLE 1 207 208 /* vmsetimask arguments */ 209 210 #define VM_INT_UNMASK 0 211 #define VM_INT_MASK 1 212 213 #define VM_NEWMAP_TYPE_LINEAR 0 214 #define VM_NEWMAP_TYPE_PGTABLES 1 215 216 217 /* 218 * Event Record definitions useful to both C and Assembler 219 */ 220 221 /* VMEST Layout */ 222 223 #define HVM_VMEST_UM_SFT 31 224 #define HVM_VMEST_UM_MSK 1 225 #define HVM_VMEST_IE_SFT 30 226 #define HVM_VMEST_IE_MSK 1 227 #define HVM_VMEST_EVENTNUM_SFT 16 228 #define HVM_VMEST_EVENTNUM_MSK 0xff 229 #define HVM_VMEST_CAUSE_SFT 0 230 #define HVM_VMEST_CAUSE_MSK 0xffff 231 232 /* 233 * The initial program gets to find a system environment descriptor 234 * on its stack when it begins exection. The first word is a version 235 * code to indicate what is there. Zero means nothing more. 236 */ 237 238 #define HEXAGON_VM_SED_NULL 0 239 240 /* 241 * Event numbers for vector binding 242 */ 243 244 #define HVM_EV_RESET 0 245 #define HVM_EV_MACHCHECK 1 246 #define HVM_EV_GENEX 2 247 #define HVM_EV_TRAP 8 248 #define HVM_EV_INTR 15 249 /* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */ 250 #define HVM_EV_INTR_0 16 251 #define HVM_MAX_INTR 240 252 253 /* 254 * Cause values for General Exception 255 */ 256 257 #define HVM_GE_C_BUS 0x01 258 #define HVM_GE_C_XPROT 0x11 259 #define HVM_GE_C_XUSER 0x14 260 #define HVM_GE_C_INVI 0x15 261 #define HVM_GE_C_PRIVI 0x1B 262 #define HVM_GE_C_XMAL 0x1C 263 #define HVM_GE_C_RMAL 0x20 264 #define HVM_GE_C_WMAL 0x21 265 #define HVM_GE_C_RPROT 0x22 266 #define HVM_GE_C_WPROT 0x23 267 #define HVM_GE_C_RUSER 0x24 268 #define HVM_GE_C_WUSER 0x25 269 #define HVM_GE_C_CACHE 0x28 270 271 /* 272 * Cause codes for Machine Check 273 */ 274 275 #define HVM_MCHK_C_DOWN 0x00 276 #define HVM_MCHK_C_BADSP 0x01 277 #define HVM_MCHK_C_BADEX 0x02 278 #define HVM_MCHK_C_BADPT 0x03 279 #define HVM_MCHK_C_REGWR 0x29 280 281 #endif 282