arch/powerpc/kvm/e500_emulate.c

   1 /*
   2  * Copyright (C) 2008 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/kvm_e500.h>
  18
  19 #include "booke.h"
  20 #include "e500_tlb.h"
  21
  22 #define XOP_TLBIVAX 786
  23 #define XOP_TLBSX   914
  24 #define XOP_TLBRE   946
  25 #define XOP_TLBWE   978
  26
  27 int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
  28                            unsigned int inst, int *advance)
  29 {
  30         int emulated = EMULATE_DONE;
  31         int ra;
  32         int rb;
  33
  34         switch (get_op(inst)) {
  35         case 31:
  36                 switch (get_xop(inst)) {
  37
  38                 case XOP_TLBRE:
  39                         emulated = kvmppc_e500_emul_tlbre(vcpu);
  40                         break;
  41
  42                 case XOP_TLBWE:
  43                         emulated = kvmppc_e500_emul_tlbwe(vcpu);
  44                         break;
  45
  46                 case XOP_TLBSX:
  47                         rb = get_rb(inst);
  48                         emulated = kvmppc_e500_emul_tlbsx(vcpu,rb);
  49                         break;
  50
  51                 case XOP_TLBIVAX:
  52                         ra = get_ra(inst);
  53                         rb = get_rb(inst);
  54                         emulated = kvmppc_e500_emul_tlbivax(vcpu, ra, rb);
  55                         break;
  56
  57                 default:
  58                         emulated = EMULATE_FAIL;
  59                 }
  60
  61                 break;
  62
  63         default:
  64                 emulated = EMULATE_FAIL;
  65         }
  66
  67         if (emulated == EMULATE_FAIL)
  68                 emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
  69
  70         return emulated;
  71 }
  72
  73 int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
  74 {
  75         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
  76         int emulated = EMULATE_DONE;
  77
  78         switch (sprn) {
  79         case SPRN_PID:
  80                 vcpu_e500->pid[0] = vcpu->arch.shadow_pid =
  81                         vcpu->arch.pid = vcpu->arch.gpr[rs];
  82                 break;
  83         case SPRN_PID1:
  84                 vcpu_e500->pid[1] = vcpu->arch.gpr[rs]; break;
  85         case SPRN_PID2:
  86                 vcpu_e500->pid[2] = vcpu->arch.gpr[rs]; break;
  87         case SPRN_MAS0:
  88                 vcpu_e500->mas0 = vcpu->arch.gpr[rs]; break;
  89         case SPRN_MAS1:
  90                 vcpu_e500->mas1 = vcpu->arch.gpr[rs]; break;
  91         case SPRN_MAS2:
  92                 vcpu_e500->mas2 = vcpu->arch.gpr[rs]; break;
  93         case SPRN_MAS3:
  94                 vcpu_e500->mas3 = vcpu->arch.gpr[rs]; break;
  95         case SPRN_MAS4:
  96                 vcpu_e500->mas4 = vcpu->arch.gpr[rs]; break;
  97         case SPRN_MAS6:
  98                 vcpu_e500->mas6 = vcpu->arch.gpr[rs]; break;
  99         case SPRN_MAS7:
 100                 vcpu_e500->mas7 = vcpu->arch.gpr[rs]; break;
 101         case SPRN_L1CSR1:
 102                 vcpu_e500->l1csr1 = vcpu->arch.gpr[rs]; break;
 103         case SPRN_HID0:
 104                 vcpu_e500->hid0 = vcpu->arch.gpr[rs]; break;
 105         case SPRN_HID1:
 106                 vcpu_e500->hid1 = vcpu->arch.gpr[rs]; break;
 107
 108         case SPRN_MMUCSR0:
 109                 emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500,
 110                                 vcpu->arch.gpr[rs]);
 111                 break;
 112
 113         /* extra exceptions */
 114         case SPRN_IVOR32:
 115                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = vcpu->arch.gpr[rs];
 116                 break;
 117         case SPRN_IVOR33:
 118                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] = vcpu->arch.gpr[rs];
 119                 break;
 120         case SPRN_IVOR34:
 121                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] = vcpu->arch.gpr[rs];
 122                 break;
 123         case SPRN_IVOR35:
 124                 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = vcpu->arch.gpr[rs];
 125                 break;
 126
 127         default:
 128                 emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, rs);
 129         }
 130
 131         return emulated;
 132 }
 133
 134 int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
 135 {
 136         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 137         int emulated = EMULATE_DONE;
 138
 139         switch (sprn) {
 140         case SPRN_PID:
 141                 vcpu->arch.gpr[rt] = vcpu_e500->pid[0]; break;
 142         case SPRN_PID1:
 143                 vcpu->arch.gpr[rt] = vcpu_e500->pid[1]; break;
 144         case SPRN_PID2:
 145                 vcpu->arch.gpr[rt] = vcpu_e500->pid[2]; break;
 146         case SPRN_MAS0:
 147                 vcpu->arch.gpr[rt] = vcpu_e500->mas0; break;
 148         case SPRN_MAS1:
 149                 vcpu->arch.gpr[rt] = vcpu_e500->mas1; break;
 150         case SPRN_MAS2:
 151                 vcpu->arch.gpr[rt] = vcpu_e500->mas2; break;
 152         case SPRN_MAS3:
 153                 vcpu->arch.gpr[rt] = vcpu_e500->mas3; break;
 154         case SPRN_MAS4:
 155                 vcpu->arch.gpr[rt] = vcpu_e500->mas4; break;
 156         case SPRN_MAS6:
 157                 vcpu->arch.gpr[rt] = vcpu_e500->mas6; break;
 158         case SPRN_MAS7:
 159                 vcpu->arch.gpr[rt] = vcpu_e500->mas7; break;
 160
 161         case SPRN_TLB0CFG:
 162                 vcpu->arch.gpr[rt] = mfspr(SPRN_TLB0CFG);
 163                 vcpu->arch.gpr[rt] &= ~0xfffUL;
 164                 vcpu->arch.gpr[rt] |= vcpu_e500->guest_tlb_size[0];
 165                 break;
 166
 167         case SPRN_TLB1CFG:
 168                 vcpu->arch.gpr[rt] = mfspr(SPRN_TLB1CFG);
 169                 vcpu->arch.gpr[rt] &= ~0xfffUL;
 170                 vcpu->arch.gpr[rt] |= vcpu_e500->guest_tlb_size[1];
 171                 break;
 172
 173         case SPRN_L1CSR1:
 174                 vcpu->arch.gpr[rt] = vcpu_e500->l1csr1; break;
 175         case SPRN_HID0:
 176                 vcpu->arch.gpr[rt] = vcpu_e500->hid0; break;
 177         case SPRN_HID1:
 178                 vcpu->arch.gpr[rt] = vcpu_e500->hid1; break;
 179
 180         case SPRN_MMUCSR0:
 181                 vcpu->arch.gpr[rt] = 0; break;
 182
 183         /* extra exceptions */
 184         case SPRN_IVOR32:
 185                 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];
 186                 break;
 187         case SPRN_IVOR33:
 188                 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA];
 189                 break;
 190         case SPRN_IVOR34:
 191                 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND];
 192                 break;
 193         case SPRN_IVOR35:
 194                 vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
 195                 break;
 196         default:
 197                 emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, rt);
 198         }
 199
 200         return emulated;
 201 }
 202