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
  93         switch (get_op(inst)) {
  94         case 31:
  95                 switch (get_xop(inst)) {
  96
  97 #ifdef CONFIG_KVM_E500MC
  98                 case XOP_MSGSND:
  99                         emulated = kvmppc_e500_emul_msgsnd(vcpu, rb);
 100                         break;
 101
 102                 case XOP_MSGCLR:
 103                         emulated = kvmppc_e500_emul_msgclr(vcpu, rb);
 104                         break;
 105 #endif
 106
 107                 case XOP_TLBRE:
 108                         emulated = kvmppc_e500_emul_tlbre(vcpu);
 109                         break;
 110
 111                 case XOP_TLBWE:
 112                         emulated = kvmppc_e500_emul_tlbwe(vcpu);
 113                         break;
 114
 115                 case XOP_TLBSX:
 116                         emulated = kvmppc_e500_emul_tlbsx(vcpu,rb);
 117                         break;
 118
 119                 case XOP_TLBILX:
 120                         emulated = kvmppc_e500_emul_tlbilx(vcpu, rt, ra, rb);
 121                         break;
 122
 123                 case XOP_TLBIVAX:
 124                         emulated = kvmppc_e500_emul_tlbivax(vcpu, ra, rb);
 125                         break;
 126
 127                 default:
 128                         emulated = EMULATE_FAIL;
 129                 }
 130
 131                 break;
 132
 133         default:
 134                 emulated = EMULATE_FAIL;
 135         }
 136
 137         if (emulated == EMULATE_FAIL)
 138                 emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
 139
 140         return emulated;
 141 }
 142
 143 int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
 144 {
 145         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 146         int emulated = EMULATE_DONE;
 147
 148         switch (sprn) {
 149 #ifndef CONFIG_KVM_BOOKE_HV
 150         case SPRN_PID:
 151                 kvmppc_set_pid(vcpu, spr_val);
 152                 break;
 153         case SPRN_PID1:
 154                 if (spr_val != 0)
 155                         return EMULATE_FAIL;
 156                 vcpu_e500->pid[1] = spr_val;
 157                 break;
 158         case SPRN_PID2:
 159                 if (spr_val != 0)
 160                         return EMULATE_FAIL;
 161                 vcpu_e500->pid[2] = spr_val;
 162                 break;
 163         case SPRN_MAS0:
 164                 vcpu->arch.shared->mas0 = spr_val;
 165                 break;
 166         case SPRN_MAS1:
 167                 vcpu->arch.shared->mas1 = spr_val;
 168                 break;
 169         case SPRN_MAS2:
 170                 vcpu->arch.shared->mas2 = spr_val;
 171                 break;
 172         case SPRN_MAS3:
 173                 vcpu->arch.shared->mas7_3 &= ~(u64)0xffffffff;
 174                 vcpu->arch.shared->mas7_3 |= spr_val;
 175                 break;
 176         case SPRN_MAS4:
 177                 vcpu->arch.shared->mas4 = spr_val;
 178                 break;
 179         case SPRN_MAS6:
 180                 vcpu->arch.shared->mas6 = spr_val;
 181                 break;
 182         case SPRN_MAS7:
 183                 vcpu->arch.shared->mas7_3 &= (u64)0xffffffff;
 184                 vcpu->arch.shared->mas7_3 |= (u64)spr_val << 32;
 185                 break;
 186 #endif
 187         case SPRN_L1CSR0:
 188                 vcpu_e500->l1csr0 = spr_val;
 189                 vcpu_e500->l1csr0 &= ~(L1CSR0_DCFI | L1CSR0_CLFC);
 190                 break;
 191         case SPRN_L1CSR1:
 192                 vcpu_e500->l1csr1 = spr_val;
 193                 break;
 194         case SPRN_HID0:
 195                 vcpu_e500->hid0 = spr_val;
 196                 break;
 197         case SPRN_HID1:
 198                 vcpu_e500->hid1 = spr_val;
 199                 break;
 200
 201         case SPRN_MMUCSR0:
 202                 emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500,
 203                                 spr_val);
 204                 break;
 205
 206         /* extra exceptions */
 207         case SPRN_IVOR32:
 208                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = spr_val;
 209                 break;
 210         case SPRN_IVOR33:
 211                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] = spr_val;
 212                 break;
 213         case SPRN_IVOR34:
 214                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] = spr_val;
 215                 break;
 216         case SPRN_IVOR35:
 217                 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = spr_val;
 218                 break;
 219 #ifdef CONFIG_KVM_BOOKE_HV
 220         case SPRN_IVOR36:
 221                 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] = spr_val;
 222                 break;
 223         case SPRN_IVOR37:
 224                 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] = spr_val;
 225                 break;
 226 #endif
 227         default:
 228                 emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, spr_val);
 229         }
 230
 231         return emulated;
 232 }
 233
 234 int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
 235 {
 236         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 237         int emulated = EMULATE_DONE;
 238
 239         switch (sprn) {
 240 #ifndef CONFIG_KVM_BOOKE_HV
 241         case SPRN_PID:
 242                 *spr_val = vcpu_e500->pid[0];
 243                 break;
 244         case SPRN_PID1:
 245                 *spr_val = vcpu_e500->pid[1];
 246                 break;
 247         case SPRN_PID2:
 248                 *spr_val = vcpu_e500->pid[2];
 249                 break;
 250         case SPRN_MAS0:
 251                 *spr_val = vcpu->arch.shared->mas0;
 252                 break;
 253         case SPRN_MAS1:
 254                 *spr_val = vcpu->arch.shared->mas1;
 255                 break;
 256         case SPRN_MAS2:
 257                 *spr_val = vcpu->arch.shared->mas2;
 258                 break;
 259         case SPRN_MAS3:
 260                 *spr_val = (u32)vcpu->arch.shared->mas7_3;
 261                 break;
 262         case SPRN_MAS4:
 263                 *spr_val = vcpu->arch.shared->mas4;
 264                 break;
 265         case SPRN_MAS6:
 266                 *spr_val = vcpu->arch.shared->mas6;
 267                 break;
 268         case SPRN_MAS7:
 269                 *spr_val = vcpu->arch.shared->mas7_3 >> 32;
 270                 break;
 271 #endif
 272         case SPRN_TLB0CFG:
 273                 *spr_val = vcpu->arch.tlbcfg[0];
 274                 break;
 275         case SPRN_TLB1CFG:
 276                 *spr_val = vcpu->arch.tlbcfg[1];
 277                 break;
 278         case SPRN_L1CSR0:
 279                 *spr_val = vcpu_e500->l1csr0;
 280                 break;
 281         case SPRN_L1CSR1:
 282                 *spr_val = vcpu_e500->l1csr1;
 283                 break;
 284         case SPRN_HID0:
 285                 *spr_val = vcpu_e500->hid0;
 286                 break;
 287         case SPRN_HID1:
 288                 *spr_val = vcpu_e500->hid1;
 289                 break;
 290         case SPRN_SVR:
 291                 *spr_val = vcpu_e500->svr;
 292                 break;
 293
 294         case SPRN_MMUCSR0:
 295                 *spr_val = 0;
 296                 break;
 297
 298         case SPRN_MMUCFG:
 299                 *spr_val = vcpu->arch.mmucfg;
 300                 break;
 301
 302         /* extra exceptions */
 303         case SPRN_IVOR32:
 304                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];
 305                 break;
 306         case SPRN_IVOR33:
 307                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA];
 308                 break;
 309         case SPRN_IVOR34:
 310                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND];
 311                 break;
 312         case SPRN_IVOR35:
 313                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
 314                 break;
 315 #ifdef CONFIG_KVM_BOOKE_HV
 316         case SPRN_IVOR36:
 317                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
 318                 break;
 319         case SPRN_IVOR37:
 320                 *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
 321                 break;
 322 #endif
 323         default:
 324                 emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, spr_val);
 325         }
 326
 327         return emulated;
 328 }
 329