1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Declarations for to Hexagon Virtal Machine. 4 * 5 * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. 6 */ 7 8 #ifndef ASM_HEXAGON_VM_H 9 #define ASM_HEXAGON_VM_H 10 11 /* 12 * In principle, a Linux kernel for the VM could 13 * selectively define the virtual instructions 14 * as inline assembler macros, but for a first pass, 15 * we'll use subroutines for both the VM and the native 16 * kernels. It's costing a subroutine call/return, 17 * but it makes for a single set of entry points 18 * for tracing/debugging. 19 */ 20 21 #define HVM_TRAP1_VMVERSION 0 22 #define HVM_TRAP1_VMRTE 1 23 #define HVM_TRAP1_VMSETVEC 2 24 #define HVM_TRAP1_VMSETIE 3 25 #define HVM_TRAP1_VMGETIE 4 26 #define HVM_TRAP1_VMINTOP 5 27 #define HVM_TRAP1_VMCLRMAP 10 28 #define HVM_TRAP1_VMNEWMAP 11 29 #define HVM_TRAP1_FORMERLY_VMWIRE 12 30 #define HVM_TRAP1_VMCACHE 13 31 #define HVM_TRAP1_VMGETTIME 14 32 #define HVM_TRAP1_VMSETTIME 15 33 #define HVM_TRAP1_VMWAIT 16 34 #define HVM_TRAP1_VMYIELD 17 35 #define HVM_TRAP1_VMSTART 18 36 #define HVM_TRAP1_VMSTOP 19 37 #define HVM_TRAP1_VMVPID 20 38 #define HVM_TRAP1_VMSETREGS 21 39 #define HVM_TRAP1_VMGETREGS 22 40 #define HVM_TRAP1_VMTIMEROP 24 41 42 #ifndef __ASSEMBLY__ 43 44 enum VM_CACHE_OPS { 45 hvmc_ickill, 46 hvmc_dckill, 47 hvmc_l2kill, 48 hvmc_dccleaninva, 49 hvmc_icinva, 50 hvmc_idsync, 51 hvmc_fetch_cfg 52 }; 53 54 enum VM_INT_OPS { 55 hvmi_nop, 56 hvmi_globen, 57 hvmi_globdis, 58 hvmi_locen, 59 hvmi_locdis, 60 hvmi_affinity, 61 hvmi_get, 62 hvmi_peek, 63 hvmi_status, 64 hvmi_post, 65 hvmi_clear 66 }; 67 68 extern void _K_VM_event_vector(void); 69 70 void __vmrte(void); 71 long __vmsetvec(void *); 72 long __vmsetie(long); 73 long __vmgetie(void); 74 long __vmintop(enum VM_INT_OPS, long, long, long, long); 75 long __vmclrmap(void *, unsigned long); 76 long __vmnewmap(void *); 77 long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len); 78 unsigned long long __vmgettime(void); 79 long __vmsettime(unsigned long long); 80 long __vmstart(void *, void *); 81 void __vmstop(void); 82 long __vmwait(void); 83 void __vmyield(void); 84 long __vmvpid(void); 85 86 static inline long __vmcache_ickill(void) 87 { 88 return __vmcache(hvmc_ickill, 0, 0); 89 } 90 91 static inline long __vmcache_dckill(void) 92 { 93 return __vmcache(hvmc_dckill, 0, 0); 94 } 95 96 static inline long __vmcache_l2kill(void) 97 { 98 return __vmcache(hvmc_l2kill, 0, 0); 99 } 100 101 static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len) 102 { 103 return __vmcache(hvmc_dccleaninva, addr, len); 104 } 105 106 static inline long __vmcache_icinva(unsigned long addr, unsigned long len) 107 { 108 return __vmcache(hvmc_icinva, addr, len); 109 } 110 111 static inline long __vmcache_idsync(unsigned long addr, 112 unsigned long len) 113 { 114 return __vmcache(hvmc_idsync, addr, len); 115 } 116 117 static inline long __vmcache_fetch_cfg(unsigned long val) 118 { 119 return __vmcache(hvmc_fetch_cfg, val, 0); 120 } 121 122 /* interrupt operations */ 123 124 static inline long __vmintop_nop(void) 125 { 126 return __vmintop(hvmi_nop, 0, 0, 0, 0); 127 } 128 129 static inline long __vmintop_globen(long i) 130 { 131 return __vmintop(hvmi_globen, i, 0, 0, 0); 132 } 133 134 static inline long __vmintop_globdis(long i) 135 { 136 return __vmintop(hvmi_globdis, i, 0, 0, 0); 137 } 138 139 static inline long __vmintop_locen(long i) 140 { 141 return __vmintop(hvmi_locen, i, 0, 0, 0); 142 } 143 144 static inline long __vmintop_locdis(long i) 145 { 146 return __vmintop(hvmi_locdis, i, 0, 0, 0); 147 } 148 149 static inline long __vmintop_affinity(long i, long cpu) 150 { 151 return __vmintop(hvmi_affinity, i, cpu, 0, 0); 152 } 153 154 static inline long __vmintop_get(void) 155 { 156 return __vmintop(hvmi_get, 0, 0, 0, 0); 157 } 158 159 static inline long __vmintop_peek(void) 160 { 161 return __vmintop(hvmi_peek, 0, 0, 0, 0); 162 } 163 164 static inline long __vmintop_status(long i) 165 { 166 return __vmintop(hvmi_status, i, 0, 0, 0); 167 } 168 169 static inline long __vmintop_post(long i) 170 { 171 return __vmintop(hvmi_post, i, 0, 0, 0); 172 } 173 174 static inline long __vmintop_clear(long i) 175 { 176 return __vmintop(hvmi_clear, i, 0, 0, 0); 177 } 178 179 #else /* Only assembly code should reference these */ 180 181 #endif /* __ASSEMBLY__ */ 182 183 /* 184 * Constants for virtual instruction parameters and return values 185 */ 186 187 /* vmnewmap arguments */ 188 189 #define VM_TRANS_TYPE_LINEAR 0 190 #define VM_TRANS_TYPE_TABLE 1 191 #define VM_TLB_INVALIDATE_FALSE 0 192 #define VM_TLB_INVALIDATE_TRUE 1 193 194 /* vmsetie arguments */ 195 196 #define VM_INT_DISABLE 0 197 #define VM_INT_ENABLE 1 198 199 /* vmsetimask arguments */ 200 201 #define VM_INT_UNMASK 0 202 #define VM_INT_MASK 1 203 204 #define VM_NEWMAP_TYPE_LINEAR 0 205 #define VM_NEWMAP_TYPE_PGTABLES 1 206 207 208 /* 209 * Event Record definitions useful to both C and Assembler 210 */ 211 212 /* VMEST Layout */ 213 214 #define HVM_VMEST_UM_SFT 31 215 #define HVM_VMEST_UM_MSK 1 216 #define HVM_VMEST_IE_SFT 30 217 #define HVM_VMEST_IE_MSK 1 218 #define HVM_VMEST_SS_SFT 29 219 #define HVM_VMEST_SS_MSK 1 220 #define HVM_VMEST_EVENTNUM_SFT 16 221 #define HVM_VMEST_EVENTNUM_MSK 0xff 222 #define HVM_VMEST_CAUSE_SFT 0 223 #define HVM_VMEST_CAUSE_MSK 0xffff 224 225 /* 226 * The initial program gets to find a system environment descriptor 227 * on its stack when it begins execution. The first word is a version 228 * code to indicate what is there. Zero means nothing more. 229 */ 230 231 #define HEXAGON_VM_SED_NULL 0 232 233 /* 234 * Event numbers for vector binding 235 */ 236 237 #define HVM_EV_RESET 0 238 #define HVM_EV_MACHCHECK 1 239 #define HVM_EV_GENEX 2 240 #define HVM_EV_TRAP 8 241 #define HVM_EV_INTR 15 242 /* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */ 243 #define HVM_EV_INTR_0 16 244 #define HVM_MAX_INTR 240 245 246 /* 247 * Cause values for General Exception 248 */ 249 250 #define HVM_GE_C_BUS 0x01 251 #define HVM_GE_C_XPROT 0x11 252 #define HVM_GE_C_XUSER 0x14 253 #define HVM_GE_C_INVI 0x15 254 #define HVM_GE_C_PRIVI 0x1B 255 #define HVM_GE_C_XMAL 0x1C 256 #define HVM_GE_C_WREG 0x1D 257 #define HVM_GE_C_PCAL 0x1E 258 #define HVM_GE_C_RMAL 0x20 259 #define HVM_GE_C_WMAL 0x21 260 #define HVM_GE_C_RPROT 0x22 261 #define HVM_GE_C_WPROT 0x23 262 #define HVM_GE_C_RUSER 0x24 263 #define HVM_GE_C_WUSER 0x25 264 #define HVM_GE_C_CACHE 0x28 265 266 /* 267 * Cause codes for Machine Check 268 */ 269 270 #define HVM_MCHK_C_DOWN 0x00 271 #define HVM_MCHK_C_BADSP 0x01 272 #define HVM_MCHK_C_BADEX 0x02 273 #define HVM_MCHK_C_BADPT 0x03 274 #define HVM_MCHK_C_REGWR 0x29 275 276 #endif 277