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;
  90         int rb;
  91         int rt;
  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, get_rb(inst));
 100                         break;
 101
 102                 case XOP_MSGCLR:
 103                         emulated = kvmppc_e500_emul_msgclr(vcpu, get_rb(inst));
 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                         rb = get_rb(inst);
 117                         emulated = kvmppc_e500_emul_tlbsx(vcpu,rb);
 118                         break;
 119
 120                 case XOP_TLBILX:
 121                         ra = get_ra(inst);
 122                         rb = get_rb(inst);
 123                         rt = get_rt(inst);
 124                         emulated = kvmppc_e500_emul_tlbilx(vcpu, rt, ra, rb);
 125                         break;
 126
 127                 case XOP_TLBIVAX:
 128                         ra = get_ra(inst);
 129                         rb = get_rb(inst);
 130                         emulated = kvmppc_e500_emul_tlbivax(vcpu, ra, rb);
 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, int rs)
 150 {
 151         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 152         int emulated = EMULATE_DONE;
 153         ulong spr_val = kvmppc_get_gpr(vcpu, rs);
 154
 155         switch (sprn) {
 156 #ifndef CONFIG_KVM_BOOKE_HV
 157         case SPRN_PID:
 158                 kvmppc_set_pid(vcpu, spr_val);
 159                 break;
 160         case SPRN_PID1:
 161                 if (spr_val != 0)
 162                         return EMULATE_FAIL;
 163                 vcpu_e500->pid[1] = spr_val; break;
 164         case SPRN_PID2:
 165                 if (spr_val != 0)
 166                         return EMULATE_FAIL;
 167                 vcpu_e500->pid[2] = spr_val; break;
 168         case SPRN_MAS0:
 169                 vcpu->arch.shared->mas0 = spr_val; break;
 170         case SPRN_MAS1:
 171                 vcpu->arch.shared->mas1 = spr_val; break;
 172         case SPRN_MAS2:
 173                 vcpu->arch.shared->mas2 = spr_val; break;
 174         case SPRN_MAS3:
 175                 vcpu->arch.shared->mas7_3 &= ~(u64)0xffffffff;
 176                 vcpu->arch.shared->mas7_3 |= spr_val;
 177                 break;
 178         case SPRN_MAS4:
 179                 vcpu->arch.shared->mas4 = spr_val; break;
 180         case SPRN_MAS6:
 181                 vcpu->arch.shared->mas6 = spr_val; 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; break;
 193         case SPRN_HID0:
 194                 vcpu_e500->hid0 = spr_val; break;
 195         case SPRN_HID1:
 196                 vcpu_e500->hid1 = spr_val; break;
 197
 198         case SPRN_MMUCSR0:
 199                 emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500,
 200                                 spr_val);
 201                 break;
 202
 203         /* extra exceptions */
 204         case SPRN_IVOR32:
 205                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = spr_val;
 206                 break;
 207         case SPRN_IVOR33:
 208                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] = spr_val;
 209                 break;
 210         case SPRN_IVOR34:
 211                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] = spr_val;
 212                 break;
 213         case SPRN_IVOR35:
 214                 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = spr_val;
 215                 break;
 216 #ifdef CONFIG_KVM_BOOKE_HV
 217         case SPRN_IVOR36:
 218                 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL] = spr_val;
 219                 break;
 220         case SPRN_IVOR37:
 221                 vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT] = spr_val;
 222                 break;
 223 #endif
 224         default:
 225                 emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, rs);
 226         }
 227
 228         return emulated;
 229 }
 230
 231 int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
 232 {
 233         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 234         int emulated = EMULATE_DONE;
 235
 236         switch (sprn) {
 237 #ifndef CONFIG_KVM_BOOKE_HV
 238                 unsigned long val;
 239
 240         case SPRN_PID:
 241                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[0]); break;
 242         case SPRN_PID1:
 243                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[1]); break;
 244         case SPRN_PID2:
 245                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[2]); break;
 246         case SPRN_MAS0:
 247                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas0); break;
 248         case SPRN_MAS1:
 249                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas1); break;
 250         case SPRN_MAS2:
 251                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas2); break;
 252         case SPRN_MAS3:
 253                 val = (u32)vcpu->arch.shared->mas7_3;
 254                 kvmppc_set_gpr(vcpu, rt, val);
 255                 break;
 256         case SPRN_MAS4:
 257                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas4); break;
 258         case SPRN_MAS6:
 259                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas6); break;
 260         case SPRN_MAS7:
 261                 val = vcpu->arch.shared->mas7_3 >> 32;
 262                 kvmppc_set_gpr(vcpu, rt, val);
 263                 break;
 264 #endif
 265         case SPRN_TLB0CFG:
 266                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.tlbcfg[0]); break;
 267         case SPRN_TLB1CFG:
 268                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.tlbcfg[1]); break;
 269         case SPRN_L1CSR0:
 270                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr0); break;
 271         case SPRN_L1CSR1:
 272                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr1); break;
 273         case SPRN_HID0:
 274                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->hid0); break;
 275         case SPRN_HID1:
 276                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->hid1); break;
 277         case SPRN_SVR:
 278                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->svr); break;
 279
 280         case SPRN_MMUCSR0:
 281                 kvmppc_set_gpr(vcpu, rt, 0); break;
 282
 283         case SPRN_MMUCFG:
 284                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.mmucfg); break;
 285
 286         /* extra exceptions */
 287         case SPRN_IVOR32:
 288                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL]);
 289                 break;
 290         case SPRN_IVOR33:
 291                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA]);
 292                 break;
 293         case SPRN_IVOR34:
 294                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND]);
 295                 break;
 296         case SPRN_IVOR35:
 297                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR]);
 298                 break;
 299 #ifdef CONFIG_KVM_BOOKE_HV
 300         case SPRN_IVOR36:
 301                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL]);
 302                 break;
 303         case SPRN_IVOR37:
 304                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT]);
 305                 break;
 306 #endif
 307         default:
 308                 emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, rt);
 309         }
 310
 311         return emulated;
 312 }
 313