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thermal: fix Mediatek thermal controller build
[linux/fpc-iii.git] / arch / powerpc / kvm / book3s_pr_papr.c
blob02176fd52f84b85187f8a57a5e434bd56299a151
1 /*
2 * Copyright (C) 2011. Freescale Inc. All rights reserved.
3 *
4 * Authors:
5 * Alexander Graf <agraf@suse.de>
6 * Paul Mackerras <paulus@samba.org>
7 *
8 * Description:
9 *
10 * Hypercall handling for running PAPR guests in PR KVM on Book 3S
11 * processors.
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License, version 2, as
15 * published by the Free Software Foundation.
16 */
17
18 #include <linux/anon_inodes.h>
19
20 #include <asm/uaccess.h>
21 #include <asm/kvm_ppc.h>
22 #include <asm/kvm_book3s.h>
23
24 #define HPTE_SIZE 16 /* bytes per HPT entry */
25
26 static unsigned long get_pteg_addr(struct kvm_vcpu *vcpu, long pte_index)
27 {
28 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
29 unsigned long pteg_addr;
30
31 pte_index <<= 4;
32 pte_index &= ((1 << ((vcpu_book3s->sdr1 & 0x1f) + 11)) - 1) << 7 | 0x70;
33 pteg_addr = vcpu_book3s->sdr1 & 0xfffffffffffc0000ULL;
34 pteg_addr |= pte_index;
35
36 return pteg_addr;
37 }
38
39 static int kvmppc_h_pr_enter(struct kvm_vcpu *vcpu)
40 {
41 long flags = kvmppc_get_gpr(vcpu, 4);
42 long pte_index = kvmppc_get_gpr(vcpu, 5);
43 __be64 pteg[2 * 8];
44 __be64 *hpte;
45 unsigned long pteg_addr, i;
46 long int ret;
47
48 i = pte_index & 7;
49 pte_index &= ~7UL;
50 pteg_addr = get_pteg_addr(vcpu, pte_index);
51
52 mutex_lock(&vcpu->kvm->arch.hpt_mutex);
53 copy_from_user(pteg, (void __user *)pteg_addr, sizeof(pteg));
54 hpte = pteg;
55
56 ret = H_PTEG_FULL;
57 if (likely((flags & H_EXACT) == 0)) {
58 for (i = 0; ; ++i) {
59 if (i == 8)
60 goto done;
61 if ((be64_to_cpu(*hpte) & HPTE_V_VALID) == 0)
62 break;
63 hpte += 2;
64 }
65 } else {
66 hpte += i * 2;
67 if (*hpte & HPTE_V_VALID)
68 goto done;
69 }
70
71 hpte[0] = cpu_to_be64(kvmppc_get_gpr(vcpu, 6));
72 hpte[1] = cpu_to_be64(kvmppc_get_gpr(vcpu, 7));
73 pteg_addr += i * HPTE_SIZE;
74 copy_to_user((void __user *)pteg_addr, hpte, HPTE_SIZE);
75 kvmppc_set_gpr(vcpu, 4, pte_index | i);
76 ret = H_SUCCESS;
77
78 done:
79 mutex_unlock(&vcpu->kvm->arch.hpt_mutex);
80 kvmppc_set_gpr(vcpu, 3, ret);
81
82 return EMULATE_DONE;
83 }
84
85 static int kvmppc_h_pr_remove(struct kvm_vcpu *vcpu)
86 {
87 unsigned long flags= kvmppc_get_gpr(vcpu, 4);
88 unsigned long pte_index = kvmppc_get_gpr(vcpu, 5);
89 unsigned long avpn = kvmppc_get_gpr(vcpu, 6);
90 unsigned long v = 0, pteg, rb;
91 unsigned long pte[2];
92 long int ret;
93
94 pteg = get_pteg_addr(vcpu, pte_index);
95 mutex_lock(&vcpu->kvm->arch.hpt_mutex);
96 copy_from_user(pte, (void __user *)pteg, sizeof(pte));
97 pte[0] = be64_to_cpu((__force __be64)pte[0]);
98 pte[1] = be64_to_cpu((__force __be64)pte[1]);
99
100 ret = H_NOT_FOUND;
101 if ((pte[0] & HPTE_V_VALID) == 0 ||
102 ((flags & H_AVPN) && (pte[0] & ~0x7fUL) != avpn) ||
103 ((flags & H_ANDCOND) && (pte[0] & avpn) != 0))
104 goto done;
105
106 copy_to_user((void __user *)pteg, &v, sizeof(v));
107
108 rb = compute_tlbie_rb(pte[0], pte[1], pte_index);
109 vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false);
110
111 ret = H_SUCCESS;
112 kvmppc_set_gpr(vcpu, 4, pte[0]);
113 kvmppc_set_gpr(vcpu, 5, pte[1]);
114
115 done:
116 mutex_unlock(&vcpu->kvm->arch.hpt_mutex);
117 kvmppc_set_gpr(vcpu, 3, ret);
118
119 return EMULATE_DONE;
120 }
121
122 /* Request defs for kvmppc_h_pr_bulk_remove() */
123 #define H_BULK_REMOVE_TYPE 0xc000000000000000ULL
124 #define H_BULK_REMOVE_REQUEST 0x4000000000000000ULL
125 #define H_BULK_REMOVE_RESPONSE 0x8000000000000000ULL
126 #define H_BULK_REMOVE_END 0xc000000000000000ULL
127 #define H_BULK_REMOVE_CODE 0x3000000000000000ULL
128 #define H_BULK_REMOVE_SUCCESS 0x0000000000000000ULL
129 #define H_BULK_REMOVE_NOT_FOUND 0x1000000000000000ULL
130 #define H_BULK_REMOVE_PARM 0x2000000000000000ULL
131 #define H_BULK_REMOVE_HW 0x3000000000000000ULL
132 #define H_BULK_REMOVE_RC 0x0c00000000000000ULL
133 #define H_BULK_REMOVE_FLAGS 0x0300000000000000ULL
134 #define H_BULK_REMOVE_ABSOLUTE 0x0000000000000000ULL
135 #define H_BULK_REMOVE_ANDCOND 0x0100000000000000ULL
136 #define H_BULK_REMOVE_AVPN 0x0200000000000000ULL
137 #define H_BULK_REMOVE_PTEX 0x00ffffffffffffffULL
138 #define H_BULK_REMOVE_MAX_BATCH 4
139
140 static int kvmppc_h_pr_bulk_remove(struct kvm_vcpu *vcpu)
141 {
142 int i;
143 int paramnr = 4;
144 int ret = H_SUCCESS;
145
146 mutex_lock(&vcpu->kvm->arch.hpt_mutex);
147 for (i = 0; i < H_BULK_REMOVE_MAX_BATCH; i++) {
148 unsigned long tsh = kvmppc_get_gpr(vcpu, paramnr+(2*i));
149 unsigned long tsl = kvmppc_get_gpr(vcpu, paramnr+(2*i)+1);
150 unsigned long pteg, rb, flags;
151 unsigned long pte[2];
152 unsigned long v = 0;
153
154 if ((tsh & H_BULK_REMOVE_TYPE) == H_BULK_REMOVE_END) {
155 break; /* Exit success */
156 } else if ((tsh & H_BULK_REMOVE_TYPE) !=
157 H_BULK_REMOVE_REQUEST) {
158 ret = H_PARAMETER;
159 break; /* Exit fail */
160 }
161
162 tsh &= H_BULK_REMOVE_PTEX | H_BULK_REMOVE_FLAGS;
163 tsh |= H_BULK_REMOVE_RESPONSE;
164
165 if ((tsh & H_BULK_REMOVE_ANDCOND) &&
166 (tsh & H_BULK_REMOVE_AVPN)) {
167 tsh |= H_BULK_REMOVE_PARM;
168 kvmppc_set_gpr(vcpu, paramnr+(2*i), tsh);
169 ret = H_PARAMETER;
170 break; /* Exit fail */
171 }
172
173 pteg = get_pteg_addr(vcpu, tsh & H_BULK_REMOVE_PTEX);
174 copy_from_user(pte, (void __user *)pteg, sizeof(pte));
175 pte[0] = be64_to_cpu((__force __be64)pte[0]);
176 pte[1] = be64_to_cpu((__force __be64)pte[1]);
177
178 /* tsl = AVPN */
179 flags = (tsh & H_BULK_REMOVE_FLAGS) >> 26;
180
181 if ((pte[0] & HPTE_V_VALID) == 0 ||
182 ((flags & H_AVPN) && (pte[0] & ~0x7fUL) != tsl) ||
183 ((flags & H_ANDCOND) && (pte[0] & tsl) != 0)) {
184 tsh |= H_BULK_REMOVE_NOT_FOUND;
185 } else {
186 /* Splat the pteg in (userland) hpt */
187 copy_to_user((void __user *)pteg, &v, sizeof(v));
188
189 rb = compute_tlbie_rb(pte[0], pte[1],
190 tsh & H_BULK_REMOVE_PTEX);
191 vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false);
192 tsh |= H_BULK_REMOVE_SUCCESS;
193 tsh |= (pte[1] & (HPTE_R_C | HPTE_R_R)) << 43;
194 }
195 kvmppc_set_gpr(vcpu, paramnr+(2*i), tsh);
196 }
197 mutex_unlock(&vcpu->kvm->arch.hpt_mutex);
198 kvmppc_set_gpr(vcpu, 3, ret);
199
200 return EMULATE_DONE;
201 }
202
203 static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu)
204 {
205 unsigned long flags = kvmppc_get_gpr(vcpu, 4);
206 unsigned long pte_index = kvmppc_get_gpr(vcpu, 5);
207 unsigned long avpn = kvmppc_get_gpr(vcpu, 6);
208 unsigned long rb, pteg, r, v;
209 unsigned long pte[2];
210 long int ret;
211
212 pteg = get_pteg_addr(vcpu, pte_index);
213 mutex_lock(&vcpu->kvm->arch.hpt_mutex);
214 copy_from_user(pte, (void __user *)pteg, sizeof(pte));
215 pte[0] = be64_to_cpu((__force __be64)pte[0]);
216 pte[1] = be64_to_cpu((__force __be64)pte[1]);
217
218 ret = H_NOT_FOUND;
219 if ((pte[0] & HPTE_V_VALID) == 0 ||
220 ((flags & H_AVPN) && (pte[0] & ~0x7fUL) != avpn))
221 goto done;
222
223 v = pte[0];
224 r = pte[1];
225 r &= ~(HPTE_R_PP0 | HPTE_R_PP | HPTE_R_N | HPTE_R_KEY_HI |
226 HPTE_R_KEY_LO);
227 r |= (flags << 55) & HPTE_R_PP0;
228 r |= (flags << 48) & HPTE_R_KEY_HI;
229 r |= flags & (HPTE_R_PP | HPTE_R_N | HPTE_R_KEY_LO);
230
231 pte[1] = r;
232
233 rb = compute_tlbie_rb(v, r, pte_index);
234 vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false);
235 pte[0] = (__force u64)cpu_to_be64(pte[0]);
236 pte[1] = (__force u64)cpu_to_be64(pte[1]);
237 copy_to_user((void __user *)pteg, pte, sizeof(pte));
238 ret = H_SUCCESS;
239
240 done:
241 mutex_unlock(&vcpu->kvm->arch.hpt_mutex);
242 kvmppc_set_gpr(vcpu, 3, ret);
243
244 return EMULATE_DONE;
245 }
246
247 static int kvmppc_h_pr_put_tce(struct kvm_vcpu *vcpu)
248 {
249 unsigned long liobn = kvmppc_get_gpr(vcpu, 4);
250 unsigned long ioba = kvmppc_get_gpr(vcpu, 5);
251 unsigned long tce = kvmppc_get_gpr(vcpu, 6);
252 long rc;
253
254 rc = kvmppc_h_put_tce(vcpu, liobn, ioba, tce);
255 if (rc == H_TOO_HARD)
256 return EMULATE_FAIL;
257 kvmppc_set_gpr(vcpu, 3, rc);
258 return EMULATE_DONE;
259 }
260
261 static int kvmppc_h_pr_logical_ci_load(struct kvm_vcpu *vcpu)
262 {
263 long rc;
264
265 rc = kvmppc_h_logical_ci_load(vcpu);
266 if (rc == H_TOO_HARD)
267 return EMULATE_FAIL;
268 kvmppc_set_gpr(vcpu, 3, rc);
269 return EMULATE_DONE;
270 }
271
272 static int kvmppc_h_pr_logical_ci_store(struct kvm_vcpu *vcpu)
273 {
274 long rc;
275
276 rc = kvmppc_h_logical_ci_store(vcpu);
277 if (rc == H_TOO_HARD)
278 return EMULATE_FAIL;
279 kvmppc_set_gpr(vcpu, 3, rc);
280 return EMULATE_DONE;
281 }
282
283 static int kvmppc_h_pr_put_tce_indirect(struct kvm_vcpu *vcpu)
284 {
285 unsigned long liobn = kvmppc_get_gpr(vcpu, 4);
286 unsigned long ioba = kvmppc_get_gpr(vcpu, 5);
287 unsigned long tce = kvmppc_get_gpr(vcpu, 6);
288 unsigned long npages = kvmppc_get_gpr(vcpu, 7);
289 long rc;
290
291 rc = kvmppc_h_put_tce_indirect(vcpu, liobn, ioba,
292 tce, npages);
293 if (rc == H_TOO_HARD)
294 return EMULATE_FAIL;
295 kvmppc_set_gpr(vcpu, 3, rc);
296 return EMULATE_DONE;
297 }
298
299 static int kvmppc_h_pr_stuff_tce(struct kvm_vcpu *vcpu)
300 {
301 unsigned long liobn = kvmppc_get_gpr(vcpu, 4);
302 unsigned long ioba = kvmppc_get_gpr(vcpu, 5);
303 unsigned long tce_value = kvmppc_get_gpr(vcpu, 6);
304 unsigned long npages = kvmppc_get_gpr(vcpu, 7);
305 long rc;
306
307 rc = kvmppc_h_stuff_tce(vcpu, liobn, ioba, tce_value, npages);
308 if (rc == H_TOO_HARD)
309 return EMULATE_FAIL;
310 kvmppc_set_gpr(vcpu, 3, rc);
311 return EMULATE_DONE;
312 }
313
314 static int kvmppc_h_pr_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
315 {
316 long rc = kvmppc_xics_hcall(vcpu, cmd);
317 kvmppc_set_gpr(vcpu, 3, rc);
318 return EMULATE_DONE;
319 }
320
321 int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd)
322 {
323 int rc, idx;
324
325 if (cmd <= MAX_HCALL_OPCODE &&
326 !test_bit(cmd/4, vcpu->kvm->arch.enabled_hcalls))
327 return EMULATE_FAIL;
328
329 switch (cmd) {
330 case H_ENTER:
331 return kvmppc_h_pr_enter(vcpu);
332 case H_REMOVE:
333 return kvmppc_h_pr_remove(vcpu);
334 case H_PROTECT:
335 return kvmppc_h_pr_protect(vcpu);
336 case H_BULK_REMOVE:
337 return kvmppc_h_pr_bulk_remove(vcpu);
338 case H_PUT_TCE:
339 return kvmppc_h_pr_put_tce(vcpu);
340 case H_PUT_TCE_INDIRECT:
341 return kvmppc_h_pr_put_tce_indirect(vcpu);
342 case H_STUFF_TCE:
343 return kvmppc_h_pr_stuff_tce(vcpu);
344 case H_CEDE:
345 kvmppc_set_msr_fast(vcpu, kvmppc_get_msr(vcpu) | MSR_EE);
346 kvm_vcpu_block(vcpu);
347 clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
348 vcpu->stat.halt_wakeup++;
349 return EMULATE_DONE;
350 case H_LOGICAL_CI_LOAD:
351 return kvmppc_h_pr_logical_ci_load(vcpu);
352 case H_LOGICAL_CI_STORE:
353 return kvmppc_h_pr_logical_ci_store(vcpu);
354 case H_XIRR:
355 case H_CPPR:
356 case H_EOI:
357 case H_IPI:
358 case H_IPOLL:
359 case H_XIRR_X:
360 if (kvmppc_xics_enabled(vcpu))
361 return kvmppc_h_pr_xics_hcall(vcpu, cmd);
362 break;
363 case H_RTAS:
364 if (list_empty(&vcpu->kvm->arch.rtas_tokens))
365 break;
366 idx = srcu_read_lock(&vcpu->kvm->srcu);
367 rc = kvmppc_rtas_hcall(vcpu);
368 srcu_read_unlock(&vcpu->kvm->srcu, idx);
369 if (rc)
370 break;
371 kvmppc_set_gpr(vcpu, 3, 0);
372 return EMULATE_DONE;
373 }
374
375 return EMULATE_FAIL;
376 }
377
378 int kvmppc_hcall_impl_pr(unsigned long cmd)
379 {
380 switch (cmd) {
381 case H_ENTER:
382 case H_REMOVE:
383 case H_PROTECT:
384 case H_BULK_REMOVE:
385 case H_PUT_TCE:
386 case H_CEDE:
387 case H_LOGICAL_CI_LOAD:
388 case H_LOGICAL_CI_STORE:
389 #ifdef CONFIG_KVM_XICS
390 case H_XIRR:
391 case H_CPPR:
392 case H_EOI:
393 case H_IPI:
394 case H_IPOLL:
395 case H_XIRR_X:
396 #endif
397 return 1;
398 }
399 return 0;
400 }
401
402 /*
403 * List of hcall numbers to enable by default.
404 * For compatibility with old userspace, we enable by default
405 * all hcalls that were implemented before the hcall-enabling
406 * facility was added. Note this list should not include H_RTAS.
407 */
408 static unsigned int default_hcall_list[] = {
409 H_ENTER,
410 H_REMOVE,
411 H_PROTECT,
412 H_BULK_REMOVE,
413 H_PUT_TCE,
414 H_CEDE,
415 #ifdef CONFIG_KVM_XICS
416 H_XIRR,
417 H_CPPR,
418 H_EOI,
419 H_IPI,
420 H_IPOLL,
421 H_XIRR_X,
422 #endif
423 0
424 };
425
426 void kvmppc_pr_init_default_hcalls(struct kvm *kvm)
427 {
428 int i;
429 unsigned int hcall;
430
431 for (i = 0; default_hcall_list[i]; ++i) {
432 hcall = default_hcall_list[i];
433 WARN_ON(!kvmppc_hcall_impl_pr(hcall));
434 __set_bit(hcall / 4, kvm->arch.enabled_hcalls);
435 }
436 }
Linux with added FPC-III support