arch/powerpc/kvm/e500_emulate.c

   1 /*
   2  * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
   3  *
   4  * Author: Yu Liu, <yu.liu@freescale.com>
   5  *
   6  * Description:
   7  * This file is derived from arch/powerpc/kvm/44x_emulate.c,
   8  * by Hollis Blanchard <hollisb@us.ibm.com>.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License, version 2, as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <asm/kvm_ppc.h>
  16 #include <asm/disassemble.h>
  17 #include <asm/dbell.h>
  18
  19 #include "booke.h"
  20 #include "e500.h"
  21
  22 #define XOP_MSGSND  206
  23 #define XOP_MSGCLR  238
  24 #define XOP_TLBIVAX 786
  25 #define XOP_TLBSX   914
  26 #define XOP_TLBRE   946
  27 #define XOP_TLBWE   978
  28 #define XOP_TLBILX  18
  29
  30 #ifdef CONFIG_KVM_E500MC
  31 static int dbell2prio(ulong param)
  32 {
  33         int msg = param & PPC_DBELL_TYPE_MASK;
  34         int prio = -1;
  35
  36         switch (msg) {
  37         case PPC_DBELL_TYPE(PPC_DBELL):
  38                 prio = BOOKE_IRQPRIO_DBELL;
  39                 break;
  40         case PPC_DBELL_TYPE(PPC_DBELL_CRIT):
  41                 prio = BOOKE_IRQPRIO_DBELL_CRIT;
  42                 break;
  43         default:
  44                 break;
  45         }
  46
  47         return prio;
  48 }
  49
  50 static int kvmppc_e500_emul_msgclr(struct kvm_vcpu *vcpu, int rb)
  51 {
  52         ulong param = vcpu->arch.gpr[rb];
  53         int prio = dbell2prio(param);
  54
  55         if (prio < 0)
  56                 return EMULATE_FAIL;
  57
  58         clear_bit(prio, &vcpu->arch.pending_exceptions);
  59         return EMULATE_DONE;
  60 }
  61
  62 static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb)
  63 {
  64         ulong param = vcpu->arch.gpr[rb];
  65         int prio = dbell2prio(rb);
  66         int pir = param & PPC_DBELL_PIR_MASK;
  67         int i;
  68         struct kvm_vcpu *cvcpu;
  69
  70         if (prio < 0)
  71                 return EMULATE_FAIL;
  72
  73         kvm_for_each_vcpu(i, cvcpu, vcpu->kvm) {
  74                 int cpir = cvcpu->arch.shared->pir;
  75                 if ((param & PPC_DBELL_MSG_BRDCAST) || (cpir == pir)) {
  76                         set_bit(prio, &cvcpu->arch.pending_exceptions);
  77                         kvm_vcpu_kick(cvcpu);
  78                 }
  79         }
  80
  81         return EMULATE_DONE;
  82 }
  83 #endif
  84
  85 int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
  86                            unsigned int inst, int *advance)
  87 {
  88         int emulated = EMULATE_DONE;
  89         int ra = get_ra(inst);
  90         int rb = get_rb(inst);
  91         int rt = get_rt(inst);
  92         gva_t ea;
  93
  94         switch (get_op(inst)) {
  95         case 31:
  96                 switch (get_xop(inst)) {
  97
  98 #ifdef CONFIG_KVM_E500MC
  99                 case XOP_MSGSND:
 100                         emulated = kvmppc_e500_emul_msgsnd(vcpu, rb);
 101                         break;
 102
 103                 case XOP_MSGCLR:
 104                         emulated = kvmppc_e500_emul_msgclr(vcpu, rb);
 105                         break;
 106 #endif
 107
 108                 case XOP_TLBRE:
 109                         emulated = kvmppc_e500_emul_tlbre(vcpu);
 110                         break;
 111
 112                 case XOP_TLBWE:
 113                         emulated = kvmppc_e500_emul_tlbwe(vcpu);
 114                         break;
 115
 116                 case XOP_TLBSX:
 117                         ea = kvmppc_get_ea_indexed(vcpu, ra, rb);
 118                         emulated = kvmppc_e500_emul_tlbsx(vcpu, ea);
 119                         break;
 120
 121                 case XOP_TLBILX: {
 122                         int type = rt & 0x3;
 123                         ea = kvmppc_get_ea_indexed(vcpu, ra, rb);
 124                         emulated = kvmppc_e500_emul_tlbilx(vcpu, type, ea);
 125                         break;
 126                 }
 127
 128                 case XOP_TLBIVAX:
 129                         ea = kvmppc_get_ea_indexed(vcpu, ra, rb);
 130                         emulated = kvmppc_e500_emul_tlbivax(vcpu, ea);
 131                         break;
 132
 133                 default:
 134                         emulated = EMULATE_FAIL;
 135                 }
 136
 137                 break;
 138
 139         default:
 140                 emulated = EMULATE_FAIL;
 141         }
 142
 143         if (emulated == EMULATE_FAIL)
 144                 emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
 145
 146         return emulated;
 147 }
 148
 149 int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
 150 {
 151         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 152         int emulated = EMULATE_DONE;
 153
 154         switch (sprn) {
 155 #ifndef CONFIG_KVM_BOOKE_HV
 156         case SPRN_PID:
 157                 kvmppc_set_pid(vcpu, spr_val);
 158                 break;
 159         case SPRN_PID1:
 160                 if (spr_val != 0)
 161                         return EMULATE_FAIL;
 162                 vcpu_e500->pid[1] = spr_val;
 163                 break;
 164         case SPRN_PID2:
 165                 if (spr_val != 0)
 166                         return EMULATE_FAIL;
 167                 vcpu_e500->pid[2] = spr_val;
 168                 break;
 169         case SPRN_MAS0:
 170                 vcpu->arch.shared->mas0 = spr_val;
 171                 break;
 172         case SPRN_MAS1:
 173                 vcpu->arch.shared->mas1 = spr_val;
 174                 break;
 175         case SPRN_MAS2:
 176                 vcpu->arch.shared->mas2 = spr_val;
 177                 break;
 178         case SPRN_MAS3:
 179                 vcpu->arch.shared->mas7_3 &= ~(u64)0xffffffff;
 180                 vcpu->arch.shared->mas7_3 |= spr_val;
 181                 break;
 182         case SPRN_MAS4:
 183                 vcpu->arch.shared->mas4 = spr_val;
 184                 break;
 185         case SPRN_MAS6:
 186                 vcpu->arch.shared->mas6 = spr_val;
 187                 break;
 188         case SPRN_MAS7:
 189                 vcpu->arch.shared->mas7_3 &= (u64)0xffffffff;
 190                 vcpu->arch.shared->mas7_3 |= (u64)spr_val << 32;
 191                 break;
 192 #endif
 193         case SPRN_L1CSR0:
 194                 vcpu_e500->l1csr0 = spr_val;
 195                 vcpu_e500->l1csr0 &= ~(L1CSR0_DCFI | L1CSR0_CLFC);
 196                 break;
 197         case SPRN_L1CSR1:
 198                 vcpu_e500->l1csr1 = spr_val;
 199                 break;
 200         case SPRN_HID0:
 201                 vcpu_e500->hid0 = spr_val;
 202                 break;
 203         case SPRN_HID1:
 204                 vcpu_e500->hid1 = spr_val;
 205                 break;
 206
 207         case SPRN_MMUCSR0:
 208                 emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500,
 209                                 spr_val);
 210                 break;
 211
 212         /* extra exceptions */
 213         case SPRN_IVOR32:
 214                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = spr_val;
 215                 break;
 216         case SPRN_IVOR33:
 217                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] = spr_val;
 218                 break;
 219         case SPRN_IVOR34:
 220                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] = spr_val;
 221                 break;
 222         case SPRN_IVOR35:
 223                 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = spr_val;
 224                 break;
 225 #ifdef CONFIG_KVM_BOOKE_HV
 226         case SPRN_IVOR36:
 227                 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] = spr_val;
 228                 break;
 229         case SPRN_IVOR37:
 230                 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] = spr_val;
 231                 break;
 232 #endif
 233         default:
 234                 emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, spr_val);
 235         }
 236
 237         return emulated;
 238 }
 239
 240 int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
 241 {
 242         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 243         int emulated = EMULATE_DONE;
 244
 245         switch (sprn) {
 246 #ifndef CONFIG_KVM_BOOKE_HV
 247         case SPRN_PID:
 248                 *spr_val = vcpu_e500->pid[0];
 249                 break;
 250         case SPRN_PID1:
 251                 *spr_val = vcpu_e500->pid[1];
 252                 break;
 253         case SPRN_PID2:
 254                 *spr_val = vcpu_e500->pid[2];
 255                 break;
 256         case SPRN_MAS0:
 257                 *spr_val = vcpu->arch.shared->mas0;
 258                 break;
 259         case SPRN_MAS1:
 260                 *spr_val = vcpu->arch.shared->mas1;
 261                 break;
 262         case SPRN_MAS2:
 263                 *spr_val = vcpu->arch.shared->mas2;
 264                 break;
 265         case SPRN_MAS3:
 266                 *spr_val = (u32)vcpu->arch.shared->mas7_3;
 267                 break;
 268         case SPRN_MAS4:
 269                 *spr_val = vcpu->arch.shared->mas4;
 270                 break;
 271         case SPRN_MAS6:
 272                 *spr_val = vcpu->arch.shared->mas6;
 273                 break;
 274         case SPRN_MAS7:
 275                 *spr_val = vcpu->arch.shared->mas7_3 >> 32;
 276                 break;
 277 #endif
 278         case SPRN_DECAR:
 279                 *spr_val = vcpu->arch.decar;
 280                 break;
 281         case SPRN_TLB0CFG:
 282                 *spr_val = vcpu->arch.tlbcfg[0];
 283                 break;
 284         case SPRN_TLB1CFG:
 285                 *spr_val = vcpu->arch.tlbcfg[1];
 286                 break;
 287         case SPRN_L1CSR0:
 288                 *spr_val = vcpu_e500->l1csr0;
 289                 break;
 290         case SPRN_L1CSR1:
 291                 *spr_val = vcpu_e500->l1csr1;
 292                 break;
 293         case SPRN_HID0:
 294                 *spr_val = vcpu_e500->hid0;
 295                 break;
 296         case SPRN_HID1:
 297                 *spr_val = vcpu_e500->hid1;
 298                 break;
 299         case SPRN_SVR:
 300                 *spr_val = vcpu_e500->svr;
 301                 break;
 302
 303         case SPRN_MMUCSR0:
 304                 *spr_val = 0;
 305                 break;
 306
 307         case SPRN_MMUCFG:
 308                 *spr_val = vcpu->arch.mmucfg;
 309                 break;
 310
 311         /* extra exceptions */
 312         case SPRN_IVOR32:
 313                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];
 314                 break;
 315         case SPRN_IVOR33:
 316                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA];
 317                 break;
 318         case SPRN_IVOR34:
 319                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND];
 320                 break;
 321         case SPRN_IVOR35:
 322                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
 323                 break;
 324 #ifdef CONFIG_KVM_BOOKE_HV
 325         case SPRN_IVOR36:
 326                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
 327                 break;
 328         case SPRN_IVOR37:
 329                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
 330                 break;
 331 #endif
 332         default:
 333                 emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, spr_val);
 334         }
 335
 336         return emulated;
 337 }
 338