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/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         ulong spr_val = kvmppc_get_gpr(vcpu, rs);
  78
  79         switch (sprn) {
  80         case SPRN_PID:
  81                 kvmppc_set_pid(vcpu, spr_val);
  82                 break;
  83         case SPRN_PID1:
  84                 if (spr_val != 0)
  85                         return EMULATE_FAIL;
  86                 vcpu_e500->pid[1] = spr_val; break;
  87         case SPRN_PID2:
  88                 if (spr_val != 0)
  89                         return EMULATE_FAIL;
  90                 vcpu_e500->pid[2] = spr_val; break;
  91         case SPRN_MAS0:
  92                 vcpu->arch.shared->mas0 = spr_val; break;
  93         case SPRN_MAS1:
  94                 vcpu->arch.shared->mas1 = spr_val; break;
  95         case SPRN_MAS2:
  96                 vcpu->arch.shared->mas2 = spr_val; break;
  97         case SPRN_MAS3:
  98                 vcpu->arch.shared->mas7_3 &= ~(u64)0xffffffff;
  99                 vcpu->arch.shared->mas7_3 |= spr_val;
 100                 break;
 101         case SPRN_MAS4:
 102                 vcpu->arch.shared->mas4 = spr_val; break;
 103         case SPRN_MAS6:
 104                 vcpu->arch.shared->mas6 = spr_val; break;
 105         case SPRN_MAS7:
 106                 vcpu->arch.shared->mas7_3 &= (u64)0xffffffff;
 107                 vcpu->arch.shared->mas7_3 |= (u64)spr_val << 32;
 108                 break;
 109         case SPRN_L1CSR0:
 110                 vcpu_e500->l1csr0 = spr_val;
 111                 vcpu_e500->l1csr0 &= ~(L1CSR0_DCFI | L1CSR0_CLFC);
 112                 break;
 113         case SPRN_L1CSR1:
 114                 vcpu_e500->l1csr1 = spr_val; break;
 115         case SPRN_HID0:
 116                 vcpu_e500->hid0 = spr_val; break;
 117         case SPRN_HID1:
 118                 vcpu_e500->hid1 = spr_val; break;
 119
 120         case SPRN_MMUCSR0:
 121                 emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500,
 122                                 spr_val);
 123                 break;
 124
 125         /* extra exceptions */
 126         case SPRN_IVOR32:
 127                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = spr_val;
 128                 break;
 129         case SPRN_IVOR33:
 130                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA] = spr_val;
 131                 break;
 132         case SPRN_IVOR34:
 133                 vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND] = spr_val;
 134                 break;
 135         case SPRN_IVOR35:
 136                 vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR] = spr_val;
 137                 break;
 138
 139         default:
 140                 emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, rs);
 141         }
 142
 143         return emulated;
 144 }
 145
 146 int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
 147 {
 148         struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
 149         int emulated = EMULATE_DONE;
 150         unsigned long val;
 151
 152         switch (sprn) {
 153         case SPRN_PID:
 154                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[0]); break;
 155         case SPRN_PID1:
 156                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[1]); break;
 157         case SPRN_PID2:
 158                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->pid[2]); break;
 159         case SPRN_MAS0:
 160                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas0); break;
 161         case SPRN_MAS1:
 162                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas1); break;
 163         case SPRN_MAS2:
 164                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas2); break;
 165         case SPRN_MAS3:
 166                 val = (u32)vcpu->arch.shared->mas7_3;
 167                 kvmppc_set_gpr(vcpu, rt, val);
 168                 break;
 169         case SPRN_MAS4:
 170                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas4); break;
 171         case SPRN_MAS6:
 172                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->mas6); break;
 173         case SPRN_MAS7:
 174                 val = vcpu->arch.shared->mas7_3 >> 32;
 175                 kvmppc_set_gpr(vcpu, rt, val);
 176                 break;
 177         case SPRN_TLB0CFG:
 178                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->tlb0cfg); break;
 179         case SPRN_TLB1CFG:
 180                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->tlb1cfg); break;
 181         case SPRN_L1CSR0:
 182                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr0); break;
 183         case SPRN_L1CSR1:
 184                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->l1csr1); break;
 185         case SPRN_HID0:
 186                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->hid0); break;
 187         case SPRN_HID1:
 188                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->hid1); break;
 189         case SPRN_SVR:
 190                 kvmppc_set_gpr(vcpu, rt, vcpu_e500->svr); break;
 191
 192         case SPRN_MMUCSR0:
 193                 kvmppc_set_gpr(vcpu, rt, 0); break;
 194
 195         case SPRN_MMUCFG:
 196                 kvmppc_set_gpr(vcpu, rt, mfspr(SPRN_MMUCFG)); break;
 197
 198         /* extra exceptions */
 199         case SPRN_IVOR32:
 200                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL]);
 201                 break;
 202         case SPRN_IVOR33:
 203                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA]);
 204                 break;
 205         case SPRN_IVOR34:
 206                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND]);
 207                 break;
 208         case SPRN_IVOR35:
 209                 kvmppc_set_gpr(vcpu, rt, vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR]);
 210                 break;
 211         default:
 212                 emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, rt);
 213         }
 214
 215         return emulated;
 216 }
 217