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 57enum 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 67enum 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 81extern void _K_VM_event_vector(void); 82 83void __vmrte(void); 84long __vmsetvec(void *); 85long __vmsetie(long); 86long __vmgetie(void); 87long __vmintop(enum VM_INT_OPS, long, long, long, long); 88long __vmclrmap(void *, unsigned long); 89long __vmnewmap(void *); 90long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len); 91unsigned long long __vmgettime(void); 92long __vmsettime(unsigned long long); 93long __vmstart(void *, void *); 94void __vmstop(void); 95long __vmwait(void); 96void __vmyield(void); 97long __vmvpid(void); 98 99static inline long __vmcache_ickill(void) 100{ 101 return __vmcache(hvmc_ickill, 0, 0); 102} 103 104static inline long __vmcache_dckill(void) 105{ 106 return __vmcache(hvmc_dckill, 0, 0); 107} 108 109static inline long __vmcache_l2kill(void) 110{ 111 return __vmcache(hvmc_l2kill, 0, 0); 112} 113 114static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len) 115{ 116 return __vmcache(hvmc_dccleaninva, addr, len); 117} 118 119static inline long __vmcache_icinva(unsigned long addr, unsigned long len) 120{ 121 return __vmcache(hvmc_icinva, addr, len); 122} 123 124static inline long __vmcache_idsync(unsigned long addr, 125 unsigned long len) 126{ 127 return __vmcache(hvmc_idsync, addr, len); 128} 129 130static inline long __vmcache_fetch_cfg(unsigned long val) 131{ 132 return __vmcache(hvmc_fetch_cfg, val, 0); 133} 134 135/* interrupt operations */ 136 137static inline long __vmintop_nop(void) 138{ 139 return __vmintop(hvmi_nop, 0, 0, 0, 0); 140} 141 142static inline long __vmintop_globen(long i) 143{ 144 return __vmintop(hvmi_globen, i, 0, 0, 0); 145} 146 147static inline long __vmintop_globdis(long i) 148{ 149 return __vmintop(hvmi_globdis, i, 0, 0, 0); 150} 151 152static inline long __vmintop_locen(long i) 153{ 154 return __vmintop(hvmi_locen, i, 0, 0, 0); 155} 156 157static inline long __vmintop_locdis(long i) 158{ 159 return __vmintop(hvmi_locdis, i, 0, 0, 0); 160} 161 162static inline long __vmintop_affinity(long i, long cpu) 163{ 164 return __vmintop(hvmi_affinity, i, cpu, 0, 0); 165} 166 167static inline long __vmintop_get(void) 168{ 169 return __vmintop(hvmi_get, 0, 0, 0, 0); 170} 171 172static inline long __vmintop_peek(void) 173{ 174 return __vmintop(hvmi_peek, 0, 0, 0, 0); 175} 176 177static inline long __vmintop_status(long i) 178{ 179 return __vmintop(hvmi_status, i, 0, 0, 0); 180} 181 182static inline long __vmintop_post(long i) 183{ 184 return __vmintop(hvmi_post, i, 0, 0, 0); 185} 186 187static 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 exection. 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