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e500_emulate.c
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1 /*
2  * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
3  *
4  * Author: Yu Liu, <[email protected]>
5  *
6  * Description:
7  * This file is derived from arch/powerpc/kvm/44x_emulate.c,
8  * by Hollis Blanchard <[email protected]>.
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_DECAR:
273  *spr_val = vcpu->arch.decar;
274  break;
275  case SPRN_TLB0CFG:
276  *spr_val = vcpu->arch.tlbcfg[0];
277  break;
278  case SPRN_TLB1CFG:
279  *spr_val = vcpu->arch.tlbcfg[1];
280  break;
281  case SPRN_L1CSR0:
282  *spr_val = vcpu_e500->l1csr0;
283  break;
284  case SPRN_L1CSR1:
285  *spr_val = vcpu_e500->l1csr1;
286  break;
287  case SPRN_HID0:
288  *spr_val = vcpu_e500->hid0;
289  break;
290  case SPRN_HID1:
291  *spr_val = vcpu_e500->hid1;
292  break;
293  case SPRN_SVR:
294  *spr_val = vcpu_e500->svr;
295  break;
296 
297  case SPRN_MMUCSR0:
298  *spr_val = 0;
299  break;
300 
301  case SPRN_MMUCFG:
302  *spr_val = vcpu->arch.mmucfg;
303  break;
304 
305  /* extra exceptions */
306  case SPRN_IVOR32:
307  *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL];
308  break;
309  case SPRN_IVOR33:
310  *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_DATA];
311  break;
312  case SPRN_IVOR34:
313  *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_FP_ROUND];
314  break;
315  case SPRN_IVOR35:
316  *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_PERFORMANCE_MONITOR];
317  break;
318 #ifdef CONFIG_KVM_BOOKE_HV
319  case SPRN_IVOR36:
320  *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL];
321  break;
322  case SPRN_IVOR37:
323  *spr_val = vcpu->arch.ivor[BOOKE_IRQPRIO_DBELL_CRIT];
324  break;
325 #endif
326  default:
327  emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, spr_val);
328  }
329 
330  return emulated;
331 }
332 
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