1/* 2 * Declarations for to Hexagon Virtal Machine. 3 * 4 * Copyright (c) 2010-2011, Code Aurora Forum. 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 41enum VM_CACHE_OPS { 42 ickill, 43 dckill, 44 l2kill, 45 dccleaninva, 46 icinva, 47 idsync, 48 fetch_cfg 49}; 50 51enum 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 65extern void _K_VM_event_vector(void); 66 67void __vmrte(void); 68long __vmsetvec(void *); 69long __vmsetie(long); 70long __vmgetie(void); 71long __vmintop(enum VM_INT_OPS, long, long, long, long); 72long __vmclrmap(void *, unsigned long); 73long __vmnewmap(void *); 74long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len); 75unsigned long long __vmgettime(void); 76long __vmsettime(unsigned long long); 77long __vmstart(void *, void *); 78void __vmstop(void); 79long __vmwait(void); 80void __vmyield(void); 81long __vmvpid(void); 82 83static inline long __vmcache_ickill(void) 84{ 85 return __vmcache(ickill, 0, 0); 86} 87 88static inline long __vmcache_dckill(void) 89{ 90 return __vmcache(dckill, 0, 0); 91} 92 93static inline long __vmcache_l2kill(void) 94{ 95 return __vmcache(l2kill, 0, 0); 96} 97 98static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len) 99{ 100 return __vmcache(dccleaninva, addr, len); 101} 102 103static inline long __vmcache_icinva(unsigned long addr, unsigned long len) 104{ 105 return __vmcache(icinva, addr, len); 106} 107 108static inline long __vmcache_idsync(unsigned long addr, 109 unsigned long len) 110{ 111 return __vmcache(idsync, addr, len); 112} 113 114static inline long __vmcache_fetch_cfg(unsigned long val) 115{ 116 return __vmcache(fetch_cfg, val, 0); 117} 118 119/* interrupt operations */ 120 121static inline long __vmintop_nop(void) 122{ 123 return __vmintop(nop, 0, 0, 0, 0); 124} 125 126static inline long __vmintop_globen(long i) 127{ 128 return __vmintop(globen, i, 0, 0, 0); 129} 130 131static inline long __vmintop_globdis(long i) 132{ 133 return __vmintop(globdis, i, 0, 0, 0); 134} 135 136static inline long __vmintop_locen(long i) 137{ 138 return __vmintop(locen, i, 0, 0, 0); 139} 140 141static inline long __vmintop_locdis(long i) 142{ 143 return __vmintop(locdis, i, 0, 0, 0); 144} 145 146static inline long __vmintop_affinity(long i, long cpu) 147{ 148 return __vmintop(locdis, i, cpu, 0, 0); 149} 150 151static inline long __vmintop_get(void) 152{ 153 return __vmintop(get, 0, 0, 0, 0); 154} 155 156static inline long __vmintop_peek(void) 157{ 158 return __vmintop(peek, 0, 0, 0, 0); 159} 160 161static inline long __vmintop_status(long i) 162{ 163 return __vmintop(status, i, 0, 0, 0); 164} 165 166static inline long __vmintop_post(long i) 167{ 168 return __vmintop(post, i, 0, 0, 0); 169} 170 171static 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