arch/hexagon/include/asm/hexagon_vm.h

   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