arch/hexagon/include/asm/hexagon_vm.h

   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 #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
  57 enum VM_CACHE_OPS {
  58         ickill,
  59         dckill,
  60         l2kill,
  61         dccleaninva,
  62         icinva,
  63         idsync,
  64         fetch_cfg
  65 };
  66
  67 enum VM_INT_OPS {
  68         nop,
  69         globen,
  70         globdis,
  71         locen,
  72         locdis,
  73         affinity,
  74         get,
  75         peek,
  76         status,
  77         post,
  78         clear
  79 };
  80
  81 extern void _K_VM_event_vector(void);
  82
  83 void __vmrte(void);
  84 long __vmsetvec(void *);
  85 long __vmsetie(long);
  86 long __vmgetie(void);
  87 long __vmintop(enum VM_INT_OPS, long, long, long, long);
  88 long __vmclrmap(void *, unsigned long);
  89 long __vmnewmap(void *);
  90 long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len);
  91 unsigned long long __vmgettime(void);
  92 long __vmsettime(unsigned long long);
  93 long __vmstart(void *, void *);
  94 void __vmstop(void);
  95 long __vmwait(void);
  96 void __vmyield(void);
  97 long __vmvpid(void);
  98
  99 static inline long __vmcache_ickill(void)
 100 {
 101         return __vmcache(ickill, 0, 0);
 102 }
 103
 104 static inline long __vmcache_dckill(void)
 105 {
 106         return __vmcache(dckill, 0, 0);
 107 }
 108
 109 static inline long __vmcache_l2kill(void)
 110 {
 111         return __vmcache(l2kill, 0, 0);
 112 }
 113
 114 static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len)
 115 {
 116         return __vmcache(dccleaninva, addr, len);
 117 }
 118
 119 static inline long __vmcache_icinva(unsigned long addr, unsigned long len)
 120 {
 121         return __vmcache(icinva, addr, len);
 122 }
 123
 124 static inline long __vmcache_idsync(unsigned long addr,
 125                                            unsigned long len)
 126 {
 127         return __vmcache(idsync, addr, len);
 128 }
 129
 130 static inline long __vmcache_fetch_cfg(unsigned long val)
 131 {
 132         return __vmcache(fetch_cfg, val, 0);
 133 }
 134
 135 /* interrupt operations  */
 136
 137 static inline long __vmintop_nop(void)
 138 {
 139         return __vmintop(nop, 0, 0, 0, 0);
 140 }
 141
 142 static inline long __vmintop_globen(long i)
 143 {
 144         return __vmintop(globen, i, 0, 0, 0);
 145 }
 146
 147 static inline long __vmintop_globdis(long i)
 148 {
 149         return __vmintop(globdis, i, 0, 0, 0);
 150 }
 151
 152 static inline long __vmintop_locen(long i)
 153 {
 154         return __vmintop(locen, i, 0, 0, 0);
 155 }
 156
 157 static inline long __vmintop_locdis(long i)
 158 {
 159         return __vmintop(locdis, i, 0, 0, 0);
 160 }
 161
 162 static inline long __vmintop_affinity(long i, long cpu)
 163 {
 164         return __vmintop(locdis, i, cpu, 0, 0);
 165 }
 166
 167 static inline long __vmintop_get(void)
 168 {
 169         return __vmintop(get, 0, 0, 0, 0);
 170 }
 171
 172 static inline long __vmintop_peek(void)
 173 {
 174         return __vmintop(peek, 0, 0, 0, 0);
 175 }
 176
 177 static inline long __vmintop_status(long i)
 178 {
 179         return __vmintop(status, i, 0, 0, 0);
 180 }
 181
 182 static inline long __vmintop_post(long i)
 183 {
 184         return __vmintop(post, i, 0, 0, 0);
 185 }
 186
 187 static inline long __vmintop_clear(long i)
 188 {
 189         return __vmintop(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 /* vmsetie arguments */
 201
 202 #define VM_INT_DISABLE  0
 203 #define VM_INT_ENABLE   1
 204
 205 /* vmsetimask arguments */
 206
 207 #define VM_INT_UNMASK   0
 208 #define VM_INT_MASK     1
 209
 210 #define VM_NEWMAP_TYPE_LINEAR   0
 211 #define VM_NEWMAP_TYPE_PGTABLES 1
 212
 213
 214 /*
 215  * Event Record definitions useful to both C and Assembler
 216  */
 217
 218 /* VMEST Layout */
 219
 220 #define HVM_VMEST_UM_SFT        31
 221 #define HVM_VMEST_UM_MSK        1
 222 #define HVM_VMEST_IE_SFT        30
 223 #define HVM_VMEST_IE_MSK        1
 224 #define HVM_VMEST_SS_SFT        29
 225 #define HVM_VMEST_SS_MSK        1
 226 #define HVM_VMEST_EVENTNUM_SFT  16
 227 #define HVM_VMEST_EVENTNUM_MSK  0xff
 228 #define HVM_VMEST_CAUSE_SFT     0
 229 #define HVM_VMEST_CAUSE_MSK     0xffff
 230
 231 /*
 232  * The initial program gets to find a system environment descriptor
 233  * on its stack when it begins exection. The first word is a version
 234  * code to indicate what is there.  Zero means nothing more.
 235  */
 236
 237 #define HEXAGON_VM_SED_NULL     0
 238
 239 /*
 240  * Event numbers for vector binding
 241  */
 242
 243 #define HVM_EV_RESET            0
 244 #define HVM_EV_MACHCHECK        1
 245 #define HVM_EV_GENEX            2
 246 #define HVM_EV_TRAP             8
 247 #define HVM_EV_INTR             15
 248 /* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */
 249 #define HVM_EV_INTR_0           16
 250 #define HVM_MAX_INTR            240
 251
 252 /*
 253  * Cause values for General Exception
 254  */
 255
 256 #define HVM_GE_C_BUS    0x01
 257 #define HVM_GE_C_XPROT  0x11
 258 #define HVM_GE_C_XUSER  0x14
 259 #define HVM_GE_C_INVI   0x15
 260 #define HVM_GE_C_PRIVI  0x1B
 261 #define HVM_GE_C_XMAL   0x1C
 262 #define HVM_GE_C_WREG   0x1D
 263 #define HVM_GE_C_PCAL   0x1E
 264 #define HVM_GE_C_RMAL   0x20
 265 #define HVM_GE_C_WMAL   0x21
 266 #define HVM_GE_C_RPROT  0x22
 267 #define HVM_GE_C_WPROT  0x23
 268 #define HVM_GE_C_RUSER  0x24
 269 #define HVM_GE_C_WUSER  0x25
 270 #define HVM_GE_C_CACHE  0x28
 271
 272 /*
 273  * Cause codes for Machine Check
 274  */
 275
 276 #define HVM_MCHK_C_DOWN         0x00
 277 #define HVM_MCHK_C_BADSP        0x01
 278 #define HVM_MCHK_C_BADEX        0x02
 279 #define HVM_MCHK_C_BADPT        0x03
 280 #define HVM_MCHK_C_REGWR        0x29
 281
 282 #endif