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Commit | Line | Data |
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10b46525 DG |
1 | /* |
2 | * PowerPC MMU, TLB, SLB and BAT emulation helpers for QEMU. | |
3 | * | |
4 | * Copyright (c) 2003-2007 Jocelyn Mayer | |
5 | * Copyright (c) 2013 David Gibson, IBM Corporation | |
6 | * | |
7 | * This library is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2 of the License, or (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
0d75590d | 20 | #include "qemu/osdep.h" |
10b46525 | 21 | #include "cpu.h" |
63c91552 | 22 | #include "exec/exec-all.h" |
2ef6175a | 23 | #include "exec/helper-proto.h" |
cd6a9bb6 | 24 | #include "qemu/error-report.h" |
b3946626 | 25 | #include "sysemu/hw_accel.h" |
10b46525 DG |
26 | #include "kvm_ppc.h" |
27 | #include "mmu-hash64.h" | |
508127e2 | 28 | #include "exec/log.h" |
7222b94a | 29 | #include "hw/hw.h" |
b2899495 | 30 | #include "mmu-book3s-v3.h" |
10b46525 DG |
31 | |
32 | //#define DEBUG_SLB | |
33 | ||
34 | #ifdef DEBUG_SLB | |
48880da6 | 35 | # define LOG_SLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) |
10b46525 DG |
36 | #else |
37 | # define LOG_SLB(...) do { } while (0) | |
38 | #endif | |
39 | ||
40 | /* | |
41 | * SLB handling | |
42 | */ | |
43 | ||
7ef23068 | 44 | static ppc_slb_t *slb_lookup(PowerPCCPU *cpu, target_ulong eaddr) |
10b46525 | 45 | { |
7ef23068 | 46 | CPUPPCState *env = &cpu->env; |
10b46525 DG |
47 | uint64_t esid_256M, esid_1T; |
48 | int n; | |
49 | ||
50 | LOG_SLB("%s: eaddr " TARGET_FMT_lx "\n", __func__, eaddr); | |
51 | ||
52 | esid_256M = (eaddr & SEGMENT_MASK_256M) | SLB_ESID_V; | |
53 | esid_1T = (eaddr & SEGMENT_MASK_1T) | SLB_ESID_V; | |
54 | ||
67d7d66f | 55 | for (n = 0; n < cpu->hash64_opts->slb_size; n++) { |
10b46525 DG |
56 | ppc_slb_t *slb = &env->slb[n]; |
57 | ||
58 | LOG_SLB("%s: slot %d %016" PRIx64 " %016" | |
59 | PRIx64 "\n", __func__, n, slb->esid, slb->vsid); | |
60 | /* We check for 1T matches on all MMUs here - if the MMU | |
61 | * doesn't have 1T segment support, we will have prevented 1T | |
62 | * entries from being inserted in the slbmte code. */ | |
63 | if (((slb->esid == esid_256M) && | |
64 | ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_256M)) | |
65 | || ((slb->esid == esid_1T) && | |
66 | ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_1T))) { | |
67 | return slb; | |
68 | } | |
69 | } | |
70 | ||
71 | return NULL; | |
72 | } | |
73 | ||
7ef23068 | 74 | void dump_slb(FILE *f, fprintf_function cpu_fprintf, PowerPCCPU *cpu) |
10b46525 | 75 | { |
7ef23068 | 76 | CPUPPCState *env = &cpu->env; |
10b46525 DG |
77 | int i; |
78 | uint64_t slbe, slbv; | |
79 | ||
7ef23068 | 80 | cpu_synchronize_state(CPU(cpu)); |
10b46525 DG |
81 | |
82 | cpu_fprintf(f, "SLB\tESID\t\t\tVSID\n"); | |
67d7d66f | 83 | for (i = 0; i < cpu->hash64_opts->slb_size; i++) { |
10b46525 DG |
84 | slbe = env->slb[i].esid; |
85 | slbv = env->slb[i].vsid; | |
86 | if (slbe == 0 && slbv == 0) { | |
87 | continue; | |
88 | } | |
89 | cpu_fprintf(f, "%d\t0x%016" PRIx64 "\t0x%016" PRIx64 "\n", | |
90 | i, slbe, slbv); | |
91 | } | |
92 | } | |
93 | ||
94 | void helper_slbia(CPUPPCState *env) | |
95 | { | |
67d7d66f | 96 | PowerPCCPU *cpu = ppc_env_get_cpu(env); |
cd0c6f47 | 97 | int n; |
10b46525 | 98 | |
10b46525 | 99 | /* XXX: Warning: slbia never invalidates the first segment */ |
67d7d66f | 100 | for (n = 1; n < cpu->hash64_opts->slb_size; n++) { |
10b46525 DG |
101 | ppc_slb_t *slb = &env->slb[n]; |
102 | ||
103 | if (slb->esid & SLB_ESID_V) { | |
104 | slb->esid &= ~SLB_ESID_V; | |
105 | /* XXX: given the fact that segment size is 256 MB or 1TB, | |
106 | * and we still don't have a tlb_flush_mask(env, n, mask) | |
107 | * in QEMU, we just invalidate all TLBs | |
108 | */ | |
a8a6d53e | 109 | env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; |
10b46525 DG |
110 | } |
111 | } | |
10b46525 DG |
112 | } |
113 | ||
a63f1dfc ND |
114 | static void __helper_slbie(CPUPPCState *env, target_ulong addr, |
115 | target_ulong global) | |
10b46525 | 116 | { |
00c8cb0a | 117 | PowerPCCPU *cpu = ppc_env_get_cpu(env); |
10b46525 DG |
118 | ppc_slb_t *slb; |
119 | ||
7ef23068 | 120 | slb = slb_lookup(cpu, addr); |
10b46525 DG |
121 | if (!slb) { |
122 | return; | |
123 | } | |
124 | ||
125 | if (slb->esid & SLB_ESID_V) { | |
126 | slb->esid &= ~SLB_ESID_V; | |
127 | ||
128 | /* XXX: given the fact that segment size is 256 MB or 1TB, | |
129 | * and we still don't have a tlb_flush_mask(env, n, mask) | |
130 | * in QEMU, we just invalidate all TLBs | |
131 | */ | |
a63f1dfc ND |
132 | env->tlb_need_flush |= |
133 | (global == false ? TLB_NEED_LOCAL_FLUSH : TLB_NEED_GLOBAL_FLUSH); | |
10b46525 DG |
134 | } |
135 | } | |
136 | ||
a63f1dfc ND |
137 | void helper_slbie(CPUPPCState *env, target_ulong addr) |
138 | { | |
139 | __helper_slbie(env, addr, false); | |
140 | } | |
141 | ||
142 | void helper_slbieg(CPUPPCState *env, target_ulong addr) | |
143 | { | |
144 | __helper_slbie(env, addr, true); | |
145 | } | |
146 | ||
bcd81230 DG |
147 | int ppc_store_slb(PowerPCCPU *cpu, target_ulong slot, |
148 | target_ulong esid, target_ulong vsid) | |
10b46525 | 149 | { |
7ef23068 | 150 | CPUPPCState *env = &cpu->env; |
10b46525 | 151 | ppc_slb_t *slb = &env->slb[slot]; |
b07c59f7 | 152 | const PPCHash64SegmentPageSizes *sps = NULL; |
cd6a9bb6 | 153 | int i; |
10b46525 | 154 | |
67d7d66f | 155 | if (slot >= cpu->hash64_opts->slb_size) { |
bcd81230 DG |
156 | return -1; /* Bad slot number */ |
157 | } | |
158 | if (esid & ~(SLB_ESID_ESID | SLB_ESID_V)) { | |
159 | return -1; /* Reserved bits set */ | |
10b46525 | 160 | } |
bcd81230 | 161 | if (vsid & (SLB_VSID_B & ~SLB_VSID_B_1T)) { |
10b46525 DG |
162 | return -1; /* Bad segment size */ |
163 | } | |
58969eee | 164 | if ((vsid & SLB_VSID_B) && !(ppc_hash64_has(cpu, PPC_HASH64_1TSEG))) { |
10b46525 DG |
165 | return -1; /* 1T segment on MMU that doesn't support it */ |
166 | } | |
167 | ||
cd6a9bb6 | 168 | for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) { |
b07c59f7 | 169 | const PPCHash64SegmentPageSizes *sps1 = &cpu->hash64_opts->sps[i]; |
cd6a9bb6 DG |
170 | |
171 | if (!sps1->page_shift) { | |
172 | break; | |
173 | } | |
174 | ||
175 | if ((vsid & SLB_VSID_LLP_MASK) == sps1->slb_enc) { | |
176 | sps = sps1; | |
177 | break; | |
178 | } | |
179 | } | |
180 | ||
181 | if (!sps) { | |
182 | error_report("Bad page size encoding in SLB store: slot "TARGET_FMT_lu | |
183 | " esid 0x"TARGET_FMT_lx" vsid 0x"TARGET_FMT_lx, | |
184 | slot, esid, vsid); | |
185 | return -1; | |
186 | } | |
187 | ||
bcd81230 DG |
188 | slb->esid = esid; |
189 | slb->vsid = vsid; | |
cd6a9bb6 | 190 | slb->sps = sps; |
10b46525 | 191 | |
76134d48 SJS |
192 | LOG_SLB("%s: " TARGET_FMT_lu " " TARGET_FMT_lx " - " TARGET_FMT_lx |
193 | " => %016" PRIx64 " %016" PRIx64 "\n", __func__, slot, esid, vsid, | |
10b46525 DG |
194 | slb->esid, slb->vsid); |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
7ef23068 | 199 | static int ppc_load_slb_esid(PowerPCCPU *cpu, target_ulong rb, |
10b46525 DG |
200 | target_ulong *rt) |
201 | { | |
7ef23068 | 202 | CPUPPCState *env = &cpu->env; |
10b46525 DG |
203 | int slot = rb & 0xfff; |
204 | ppc_slb_t *slb = &env->slb[slot]; | |
205 | ||
67d7d66f | 206 | if (slot >= cpu->hash64_opts->slb_size) { |
10b46525 DG |
207 | return -1; |
208 | } | |
209 | ||
210 | *rt = slb->esid; | |
211 | return 0; | |
212 | } | |
213 | ||
7ef23068 | 214 | static int ppc_load_slb_vsid(PowerPCCPU *cpu, target_ulong rb, |
10b46525 DG |
215 | target_ulong *rt) |
216 | { | |
7ef23068 | 217 | CPUPPCState *env = &cpu->env; |
10b46525 DG |
218 | int slot = rb & 0xfff; |
219 | ppc_slb_t *slb = &env->slb[slot]; | |
220 | ||
67d7d66f | 221 | if (slot >= cpu->hash64_opts->slb_size) { |
10b46525 DG |
222 | return -1; |
223 | } | |
224 | ||
225 | *rt = slb->vsid; | |
226 | return 0; | |
227 | } | |
228 | ||
c76c22d5 BH |
229 | static int ppc_find_slb_vsid(PowerPCCPU *cpu, target_ulong rb, |
230 | target_ulong *rt) | |
231 | { | |
232 | CPUPPCState *env = &cpu->env; | |
233 | ppc_slb_t *slb; | |
234 | ||
235 | if (!msr_is_64bit(env, env->msr)) { | |
236 | rb &= 0xffffffff; | |
237 | } | |
238 | slb = slb_lookup(cpu, rb); | |
239 | if (slb == NULL) { | |
240 | *rt = (target_ulong)-1ul; | |
241 | } else { | |
242 | *rt = slb->vsid; | |
243 | } | |
244 | return 0; | |
245 | } | |
246 | ||
10b46525 DG |
247 | void helper_store_slb(CPUPPCState *env, target_ulong rb, target_ulong rs) |
248 | { | |
7ef23068 DG |
249 | PowerPCCPU *cpu = ppc_env_get_cpu(env); |
250 | ||
bcd81230 | 251 | if (ppc_store_slb(cpu, rb & 0xfff, rb & ~0xfffULL, rs) < 0) { |
0f72b7c6 BH |
252 | raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, |
253 | POWERPC_EXCP_INVAL, GETPC()); | |
10b46525 DG |
254 | } |
255 | } | |
256 | ||
257 | target_ulong helper_load_slb_esid(CPUPPCState *env, target_ulong rb) | |
258 | { | |
7ef23068 | 259 | PowerPCCPU *cpu = ppc_env_get_cpu(env); |
10b46525 DG |
260 | target_ulong rt = 0; |
261 | ||
7ef23068 | 262 | if (ppc_load_slb_esid(cpu, rb, &rt) < 0) { |
0f72b7c6 BH |
263 | raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, |
264 | POWERPC_EXCP_INVAL, GETPC()); | |
10b46525 DG |
265 | } |
266 | return rt; | |
267 | } | |
268 | ||
c76c22d5 BH |
269 | target_ulong helper_find_slb_vsid(CPUPPCState *env, target_ulong rb) |
270 | { | |
271 | PowerPCCPU *cpu = ppc_env_get_cpu(env); | |
272 | target_ulong rt = 0; | |
273 | ||
274 | if (ppc_find_slb_vsid(cpu, rb, &rt) < 0) { | |
0f72b7c6 BH |
275 | raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, |
276 | POWERPC_EXCP_INVAL, GETPC()); | |
c76c22d5 BH |
277 | } |
278 | return rt; | |
279 | } | |
280 | ||
10b46525 DG |
281 | target_ulong helper_load_slb_vsid(CPUPPCState *env, target_ulong rb) |
282 | { | |
7ef23068 | 283 | PowerPCCPU *cpu = ppc_env_get_cpu(env); |
10b46525 DG |
284 | target_ulong rt = 0; |
285 | ||
7ef23068 | 286 | if (ppc_load_slb_vsid(cpu, rb, &rt) < 0) { |
0f72b7c6 BH |
287 | raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, |
288 | POWERPC_EXCP_INVAL, GETPC()); | |
10b46525 DG |
289 | } |
290 | return rt; | |
291 | } | |
9d7c3f4a | 292 | |
07a68f99 SJS |
293 | /* Check No-Execute or Guarded Storage */ |
294 | static inline int ppc_hash64_pte_noexec_guard(PowerPCCPU *cpu, | |
295 | ppc_hash_pte64_t pte) | |
296 | { | |
297 | /* Exec permissions CANNOT take away read or write permissions */ | |
298 | return (pte.pte1 & HPTE64_R_N) || (pte.pte1 & HPTE64_R_G) ? | |
299 | PAGE_READ | PAGE_WRITE : PAGE_READ | PAGE_WRITE | PAGE_EXEC; | |
300 | } | |
301 | ||
302 | /* Check Basic Storage Protection */ | |
7ef23068 | 303 | static int ppc_hash64_pte_prot(PowerPCCPU *cpu, |
e01b4445 | 304 | ppc_slb_t *slb, ppc_hash_pte64_t pte) |
496272a7 | 305 | { |
7ef23068 | 306 | CPUPPCState *env = &cpu->env; |
e01b4445 DG |
307 | unsigned pp, key; |
308 | /* Some pp bit combinations have undefined behaviour, so default | |
309 | * to no access in those cases */ | |
310 | int prot = 0; | |
311 | ||
312 | key = !!(msr_pr ? (slb->vsid & SLB_VSID_KP) | |
313 | : (slb->vsid & SLB_VSID_KS)); | |
314 | pp = (pte.pte1 & HPTE64_R_PP) | ((pte.pte1 & HPTE64_R_PP0) >> 61); | |
496272a7 | 315 | |
496272a7 DG |
316 | if (key == 0) { |
317 | switch (pp) { | |
318 | case 0x0: | |
319 | case 0x1: | |
320 | case 0x2: | |
347a5c73 | 321 | prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
e01b4445 DG |
322 | break; |
323 | ||
496272a7 DG |
324 | case 0x3: |
325 | case 0x6: | |
347a5c73 | 326 | prot = PAGE_READ | PAGE_EXEC; |
496272a7 DG |
327 | break; |
328 | } | |
329 | } else { | |
330 | switch (pp) { | |
331 | case 0x0: | |
332 | case 0x6: | |
496272a7 | 333 | break; |
e01b4445 | 334 | |
496272a7 DG |
335 | case 0x1: |
336 | case 0x3: | |
347a5c73 | 337 | prot = PAGE_READ | PAGE_EXEC; |
496272a7 | 338 | break; |
e01b4445 | 339 | |
496272a7 | 340 | case 0x2: |
347a5c73 | 341 | prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
496272a7 DG |
342 | break; |
343 | } | |
344 | } | |
496272a7 | 345 | |
e01b4445 | 346 | return prot; |
496272a7 DG |
347 | } |
348 | ||
a6152b52 SJS |
349 | /* Check the instruction access permissions specified in the IAMR */ |
350 | static int ppc_hash64_iamr_prot(PowerPCCPU *cpu, int key) | |
351 | { | |
352 | CPUPPCState *env = &cpu->env; | |
353 | int iamr_bits = (env->spr[SPR_IAMR] >> 2 * (31 - key)) & 0x3; | |
354 | ||
355 | /* | |
356 | * An instruction fetch is permitted if the IAMR bit is 0. | |
357 | * If the bit is set, return PAGE_READ | PAGE_WRITE because this bit | |
358 | * can only take away EXEC permissions not READ or WRITE permissions. | |
359 | * If bit is cleared return PAGE_READ | PAGE_WRITE | PAGE_EXEC since | |
360 | * EXEC permissions are allowed. | |
361 | */ | |
362 | return (iamr_bits & 0x1) ? PAGE_READ | PAGE_WRITE : | |
363 | PAGE_READ | PAGE_WRITE | PAGE_EXEC; | |
364 | } | |
365 | ||
7ef23068 | 366 | static int ppc_hash64_amr_prot(PowerPCCPU *cpu, ppc_hash_pte64_t pte) |
f80872e2 | 367 | { |
7ef23068 | 368 | CPUPPCState *env = &cpu->env; |
f80872e2 | 369 | int key, amrbits; |
363248e8 | 370 | int prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
f80872e2 | 371 | |
f80872e2 | 372 | /* Only recent MMUs implement Virtual Page Class Key Protection */ |
58969eee | 373 | if (!ppc_hash64_has(cpu, PPC_HASH64_AMR)) { |
363248e8 | 374 | return prot; |
f80872e2 DG |
375 | } |
376 | ||
377 | key = HPTE64_R_KEY(pte.pte1); | |
378 | amrbits = (env->spr[SPR_AMR] >> 2*(31 - key)) & 0x3; | |
379 | ||
380 | /* fprintf(stderr, "AMR protection: key=%d AMR=0x%" PRIx64 "\n", key, */ | |
381 | /* env->spr[SPR_AMR]); */ | |
382 | ||
363248e8 CLG |
383 | /* |
384 | * A store is permitted if the AMR bit is 0. Remove write | |
385 | * protection if it is set. | |
386 | */ | |
f80872e2 | 387 | if (amrbits & 0x2) { |
363248e8 | 388 | prot &= ~PAGE_WRITE; |
f80872e2 | 389 | } |
363248e8 CLG |
390 | /* |
391 | * A load is permitted if the AMR bit is 0. Remove read | |
392 | * protection if it is set. | |
393 | */ | |
f80872e2 | 394 | if (amrbits & 0x1) { |
363248e8 | 395 | prot &= ~PAGE_READ; |
f80872e2 DG |
396 | } |
397 | ||
a6152b52 SJS |
398 | switch (env->mmu_model) { |
399 | /* | |
400 | * MMU version 2.07 and later support IAMR | |
401 | * Check if the IAMR allows the instruction access - it will return | |
402 | * PAGE_EXEC if it doesn't (and thus that bit will be cleared) or 0 | |
403 | * if it does (and prot will be unchanged indicating execution support). | |
404 | */ | |
405 | case POWERPC_MMU_2_07: | |
406 | case POWERPC_MMU_3_00: | |
407 | prot &= ppc_hash64_iamr_prot(cpu, key); | |
408 | break; | |
409 | default: | |
410 | break; | |
411 | } | |
412 | ||
f80872e2 DG |
413 | return prot; |
414 | } | |
415 | ||
7222b94a DG |
416 | const ppc_hash_pte64_t *ppc_hash64_map_hptes(PowerPCCPU *cpu, |
417 | hwaddr ptex, int n) | |
7c43bca0 | 418 | { |
7222b94a | 419 | hwaddr pte_offset = ptex * HASH_PTE_SIZE_64; |
e57ca75c DG |
420 | hwaddr base = ppc_hash64_hpt_base(cpu); |
421 | hwaddr plen = n * HASH_PTE_SIZE_64; | |
422 | const ppc_hash_pte64_t *hptes; | |
7c43bca0 | 423 | |
e57ca75c DG |
424 | if (cpu->vhyp) { |
425 | PPCVirtualHypervisorClass *vhc = | |
426 | PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp); | |
427 | return vhc->map_hptes(cpu->vhyp, ptex, n); | |
428 | } | |
429 | ||
430 | if (!base) { | |
431 | return NULL; | |
432 | } | |
433 | ||
434 | hptes = address_space_map(CPU(cpu)->as, base + pte_offset, &plen, false); | |
435 | if (plen < (n * HASH_PTE_SIZE_64)) { | |
436 | hw_error("%s: Unable to map all requested HPTEs\n", __func__); | |
7c43bca0 | 437 | } |
7222b94a | 438 | return hptes; |
7c43bca0 AK |
439 | } |
440 | ||
7222b94a DG |
441 | void ppc_hash64_unmap_hptes(PowerPCCPU *cpu, const ppc_hash_pte64_t *hptes, |
442 | hwaddr ptex, int n) | |
7c43bca0 | 443 | { |
e57ca75c DG |
444 | if (cpu->vhyp) { |
445 | PPCVirtualHypervisorClass *vhc = | |
446 | PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp); | |
447 | vhc->unmap_hptes(cpu->vhyp, hptes, ptex, n); | |
448 | return; | |
7c43bca0 | 449 | } |
e57ca75c DG |
450 | |
451 | address_space_unmap(CPU(cpu)->as, (void *)hptes, n * HASH_PTE_SIZE_64, | |
452 | false, n * HASH_PTE_SIZE_64); | |
7c43bca0 AK |
453 | } |
454 | ||
b07c59f7 DG |
455 | static unsigned hpte_page_shift(const PPCHash64SegmentPageSizes *sps, |
456 | uint64_t pte0, uint64_t pte1) | |
4322e8ce | 457 | { |
651060ab DG |
458 | int i; |
459 | ||
460 | if (!(pte0 & HPTE64_V_LARGE)) { | |
461 | if (sps->page_shift != 12) { | |
462 | /* 4kiB page in a non 4kiB segment */ | |
463 | return 0; | |
464 | } | |
465 | /* Normal 4kiB page */ | |
4322e8ce | 466 | return 12; |
651060ab DG |
467 | } |
468 | ||
469 | for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) { | |
b07c59f7 | 470 | const PPCHash64PageSize *ps = &sps->enc[i]; |
651060ab DG |
471 | uint64_t mask; |
472 | ||
473 | if (!ps->page_shift) { | |
474 | break; | |
4322e8ce | 475 | } |
651060ab DG |
476 | |
477 | if (ps->page_shift == 12) { | |
478 | /* L bit is set so this can't be a 4kiB page */ | |
479 | continue; | |
480 | } | |
481 | ||
482 | mask = ((1ULL << ps->page_shift) - 1) & HPTE64_R_RPN; | |
483 | ||
b56d417b | 484 | if ((pte1 & mask) == ((uint64_t)ps->pte_enc << HPTE64_R_RPN_SHIFT)) { |
651060ab | 485 | return ps->page_shift; |
4322e8ce | 486 | } |
4322e8ce | 487 | } |
651060ab DG |
488 | |
489 | return 0; /* Bad page size encoding */ | |
4322e8ce BH |
490 | } |
491 | ||
7ef23068 | 492 | static hwaddr ppc_hash64_pteg_search(PowerPCCPU *cpu, hwaddr hash, |
b07c59f7 | 493 | const PPCHash64SegmentPageSizes *sps, |
2c7ad804 | 494 | target_ulong ptem, |
94986863 | 495 | ppc_hash_pte64_t *pte, unsigned *pshift) |
aea390e4 | 496 | { |
aea390e4 | 497 | int i; |
7222b94a | 498 | const ppc_hash_pte64_t *pteg; |
7c43bca0 | 499 | target_ulong pte0, pte1; |
7222b94a | 500 | target_ulong ptex; |
aea390e4 | 501 | |
36778660 | 502 | ptex = (hash & ppc_hash64_hpt_mask(cpu)) * HPTES_PER_GROUP; |
7222b94a DG |
503 | pteg = ppc_hash64_map_hptes(cpu, ptex, HPTES_PER_GROUP); |
504 | if (!pteg) { | |
7c43bca0 AK |
505 | return -1; |
506 | } | |
aea390e4 | 507 | for (i = 0; i < HPTES_PER_GROUP; i++) { |
7222b94a DG |
508 | pte0 = ppc_hash64_hpte0(cpu, pteg, i); |
509 | pte1 = ppc_hash64_hpte1(cpu, pteg, i); | |
aea390e4 | 510 | |
073de86a DG |
511 | /* This compares V, B, H (secondary) and the AVPN */ |
512 | if (HPTE64_V_COMPARE(pte0, ptem)) { | |
2c7ad804 | 513 | *pshift = hpte_page_shift(sps, pte0, pte1); |
651060ab DG |
514 | /* |
515 | * If there is no match, ignore the PTE, it could simply | |
516 | * be for a different segment size encoding and the | |
517 | * architecture specifies we should not match. Linux will | |
518 | * potentially leave behind PTEs for the wrong base page | |
519 | * size when demoting segments. | |
520 | */ | |
94986863 | 521 | if (*pshift == 0) { |
4322e8ce BH |
522 | continue; |
523 | } | |
524 | /* We don't do anything with pshift yet as qemu TLB only deals | |
525 | * with 4K pages anyway | |
526 | */ | |
aea390e4 DG |
527 | pte->pte0 = pte0; |
528 | pte->pte1 = pte1; | |
7222b94a DG |
529 | ppc_hash64_unmap_hptes(cpu, pteg, ptex, HPTES_PER_GROUP); |
530 | return ptex + i; | |
aea390e4 | 531 | } |
aea390e4 | 532 | } |
7222b94a | 533 | ppc_hash64_unmap_hptes(cpu, pteg, ptex, HPTES_PER_GROUP); |
7c43bca0 AK |
534 | /* |
535 | * We didn't find a valid entry. | |
536 | */ | |
aea390e4 DG |
537 | return -1; |
538 | } | |
539 | ||
7ef23068 | 540 | static hwaddr ppc_hash64_htab_lookup(PowerPCCPU *cpu, |
7f3bdc2d | 541 | ppc_slb_t *slb, target_ulong eaddr, |
94986863 | 542 | ppc_hash_pte64_t *pte, unsigned *pshift) |
c69b6151 | 543 | { |
7ef23068 | 544 | CPUPPCState *env = &cpu->env; |
7222b94a | 545 | hwaddr hash, ptex; |
cd6a9bb6 | 546 | uint64_t vsid, epnmask, epn, ptem; |
b07c59f7 | 547 | const PPCHash64SegmentPageSizes *sps = slb->sps; |
cd6a9bb6 DG |
548 | |
549 | /* The SLB store path should prevent any bad page size encodings | |
550 | * getting in there, so: */ | |
2c7ad804 | 551 | assert(sps); |
a1ff751a | 552 | |
2c7ad804 BH |
553 | /* If ISL is set in LPCR we need to clamp the page size to 4K */ |
554 | if (env->spr[SPR_LPCR] & LPCR_ISL) { | |
555 | /* We assume that when using TCG, 4k is first entry of SPS */ | |
b07c59f7 | 556 | sps = &cpu->hash64_opts->sps[0]; |
2c7ad804 BH |
557 | assert(sps->page_shift == 12); |
558 | } | |
559 | ||
560 | epnmask = ~((1ULL << sps->page_shift) - 1); | |
a1ff751a | 561 | |
a1ff751a | 562 | if (slb->vsid & SLB_VSID_B) { |
18148898 DG |
563 | /* 1TB segment */ |
564 | vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT_1T; | |
565 | epn = (eaddr & ~SEGMENT_MASK_1T) & epnmask; | |
2c7ad804 | 566 | hash = vsid ^ (vsid << 25) ^ (epn >> sps->page_shift); |
a1ff751a | 567 | } else { |
18148898 DG |
568 | /* 256M segment */ |
569 | vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT; | |
570 | epn = (eaddr & ~SEGMENT_MASK_256M) & epnmask; | |
2c7ad804 | 571 | hash = vsid ^ (epn >> sps->page_shift); |
a1ff751a | 572 | } |
18148898 | 573 | ptem = (slb->vsid & SLB_VSID_PTEM) | ((epn >> 16) & HPTE64_V_AVPN); |
073de86a | 574 | ptem |= HPTE64_V_VALID; |
a1ff751a | 575 | |
a1ff751a | 576 | /* Page address translation */ |
339aaf5b AP |
577 | qemu_log_mask(CPU_LOG_MMU, |
578 | "htab_base " TARGET_FMT_plx " htab_mask " TARGET_FMT_plx | |
a1ff751a | 579 | " hash " TARGET_FMT_plx "\n", |
36778660 | 580 | ppc_hash64_hpt_base(cpu), ppc_hash64_hpt_mask(cpu), hash); |
a1ff751a | 581 | |
a1ff751a | 582 | /* Primary PTEG lookup */ |
339aaf5b AP |
583 | qemu_log_mask(CPU_LOG_MMU, |
584 | "0 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx | |
a1ff751a DG |
585 | " vsid=" TARGET_FMT_lx " ptem=" TARGET_FMT_lx |
586 | " hash=" TARGET_FMT_plx "\n", | |
36778660 DG |
587 | ppc_hash64_hpt_base(cpu), ppc_hash64_hpt_mask(cpu), |
588 | vsid, ptem, hash); | |
7222b94a | 589 | ptex = ppc_hash64_pteg_search(cpu, hash, sps, ptem, pte, pshift); |
7f3bdc2d | 590 | |
7222b94a | 591 | if (ptex == -1) { |
a1ff751a | 592 | /* Secondary PTEG lookup */ |
073de86a | 593 | ptem |= HPTE64_V_SECONDARY; |
339aaf5b AP |
594 | qemu_log_mask(CPU_LOG_MMU, |
595 | "1 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx | |
a1ff751a | 596 | " vsid=" TARGET_FMT_lx " api=" TARGET_FMT_lx |
36778660 DG |
597 | " hash=" TARGET_FMT_plx "\n", ppc_hash64_hpt_base(cpu), |
598 | ppc_hash64_hpt_mask(cpu), vsid, ptem, ~hash); | |
a1ff751a | 599 | |
7222b94a | 600 | ptex = ppc_hash64_pteg_search(cpu, ~hash, sps, ptem, pte, pshift); |
a1ff751a DG |
601 | } |
602 | ||
7222b94a | 603 | return ptex; |
c69b6151 | 604 | } |
0480884f | 605 | |
1114e712 | 606 | unsigned ppc_hash64_hpte_page_shift_noslb(PowerPCCPU *cpu, |
1f0252e6 | 607 | uint64_t pte0, uint64_t pte1) |
1114e712 | 608 | { |
1114e712 DG |
609 | int i; |
610 | ||
611 | if (!(pte0 & HPTE64_V_LARGE)) { | |
1114e712 DG |
612 | return 12; |
613 | } | |
614 | ||
615 | /* | |
616 | * The encodings in env->sps need to be carefully chosen so that | |
617 | * this gives an unambiguous result. | |
618 | */ | |
619 | for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) { | |
b07c59f7 | 620 | const PPCHash64SegmentPageSizes *sps = &cpu->hash64_opts->sps[i]; |
1114e712 DG |
621 | unsigned shift; |
622 | ||
623 | if (!sps->page_shift) { | |
624 | break; | |
625 | } | |
626 | ||
627 | shift = hpte_page_shift(sps, pte0, pte1); | |
628 | if (shift) { | |
1114e712 DG |
629 | return shift; |
630 | } | |
631 | } | |
632 | ||
1114e712 DG |
633 | return 0; |
634 | } | |
635 | ||
8fe08fac | 636 | static void ppc_hash64_set_isi(CPUState *cs, uint64_t error_code) |
33595dc9 | 637 | { |
8fe08fac | 638 | CPUPPCState *env = &POWERPC_CPU(cs)->env; |
33595dc9 BH |
639 | bool vpm; |
640 | ||
641 | if (msr_ir) { | |
642 | vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM1); | |
643 | } else { | |
50659083 SJS |
644 | switch (env->mmu_model) { |
645 | case POWERPC_MMU_3_00: | |
646 | /* Field deprecated in ISAv3.00 - interrupts always go to hyperv */ | |
647 | vpm = true; | |
648 | break; | |
649 | default: | |
650 | vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM0); | |
651 | break; | |
652 | } | |
33595dc9 BH |
653 | } |
654 | if (vpm && !msr_hv) { | |
655 | cs->exception_index = POWERPC_EXCP_HISI; | |
656 | } else { | |
657 | cs->exception_index = POWERPC_EXCP_ISI; | |
658 | } | |
659 | env->error_code = error_code; | |
660 | } | |
661 | ||
8fe08fac | 662 | static void ppc_hash64_set_dsi(CPUState *cs, uint64_t dar, uint64_t dsisr) |
33595dc9 | 663 | { |
8fe08fac | 664 | CPUPPCState *env = &POWERPC_CPU(cs)->env; |
33595dc9 BH |
665 | bool vpm; |
666 | ||
667 | if (msr_dr) { | |
668 | vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM1); | |
669 | } else { | |
50659083 SJS |
670 | switch (env->mmu_model) { |
671 | case POWERPC_MMU_3_00: | |
672 | /* Field deprecated in ISAv3.00 - interrupts always go to hyperv */ | |
673 | vpm = true; | |
674 | break; | |
675 | default: | |
676 | vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM0); | |
677 | break; | |
678 | } | |
33595dc9 BH |
679 | } |
680 | if (vpm && !msr_hv) { | |
681 | cs->exception_index = POWERPC_EXCP_HDSI; | |
682 | env->spr[SPR_HDAR] = dar; | |
683 | env->spr[SPR_HDSISR] = dsisr; | |
684 | } else { | |
685 | cs->exception_index = POWERPC_EXCP_DSI; | |
686 | env->spr[SPR_DAR] = dar; | |
687 | env->spr[SPR_DSISR] = dsisr; | |
688 | } | |
689 | env->error_code = 0; | |
690 | } | |
691 | ||
692 | ||
b2305601 | 693 | int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, |
caa597bd | 694 | int rwx, int mmu_idx) |
0480884f | 695 | { |
d0e39c5d AF |
696 | CPUState *cs = CPU(cpu); |
697 | CPUPPCState *env = &cpu->env; | |
0480884f | 698 | ppc_slb_t *slb; |
be18b2b5 | 699 | unsigned apshift; |
7222b94a | 700 | hwaddr ptex; |
7f3bdc2d | 701 | ppc_hash_pte64_t pte; |
07a68f99 | 702 | int exec_prot, pp_prot, amr_prot, prot; |
da82c73a | 703 | uint64_t new_pte1; |
e01b4445 | 704 | const int need_prot[] = {PAGE_READ, PAGE_WRITE, PAGE_EXEC}; |
caa597bd | 705 | hwaddr raddr; |
0480884f | 706 | |
6a980110 DG |
707 | assert((rwx == 0) || (rwx == 1) || (rwx == 2)); |
708 | ||
912acdf4 BH |
709 | /* Note on LPCR usage: 970 uses HID4, but our special variant |
710 | * of store_spr copies relevant fields into env->spr[SPR_LPCR]. | |
711 | * Similarily we filter unimplemented bits when storing into | |
712 | * LPCR depending on the MMU version. This code can thus just | |
713 | * use the LPCR "as-is". | |
714 | */ | |
715 | ||
65d61643 DG |
716 | /* 1. Handle real mode accesses */ |
717 | if (((rwx == 2) && (msr_ir == 0)) || ((rwx != 2) && (msr_dr == 0))) { | |
912acdf4 BH |
718 | /* Translation is supposedly "off" */ |
719 | /* In real mode the top 4 effective address bits are (mostly) ignored */ | |
caa597bd | 720 | raddr = eaddr & 0x0FFFFFFFFFFFFFFFULL; |
912acdf4 BH |
721 | |
722 | /* In HV mode, add HRMOR if top EA bit is clear */ | |
723 | if (msr_hv || !env->has_hv_mode) { | |
724 | if (!(eaddr >> 63)) { | |
725 | raddr |= env->spr[SPR_HRMOR]; | |
726 | } | |
727 | } else { | |
728 | /* Otherwise, check VPM for RMA vs VRMA */ | |
729 | if (env->spr[SPR_LPCR] & LPCR_VPM0) { | |
730 | slb = &env->vrma_slb; | |
731 | if (slb->sps) { | |
732 | goto skip_slb_search; | |
733 | } | |
734 | /* Not much else to do here */ | |
735 | cs->exception_index = POWERPC_EXCP_MCHECK; | |
736 | env->error_code = 0; | |
737 | return 1; | |
738 | } else if (raddr < env->rmls) { | |
739 | /* RMA. Check bounds in RMLS */ | |
740 | raddr |= env->spr[SPR_RMOR]; | |
741 | } else { | |
742 | /* The access failed, generate the approriate interrupt */ | |
743 | if (rwx == 2) { | |
8fe08fac | 744 | ppc_hash64_set_isi(cs, SRR1_PROTFAULT); |
912acdf4 | 745 | } else { |
da82c73a | 746 | int dsisr = DSISR_PROTFAULT; |
912acdf4 | 747 | if (rwx == 1) { |
da82c73a | 748 | dsisr |= DSISR_ISSTORE; |
912acdf4 | 749 | } |
8fe08fac | 750 | ppc_hash64_set_dsi(cs, eaddr, dsisr); |
912acdf4 BH |
751 | } |
752 | return 1; | |
753 | } | |
754 | } | |
0c591eb0 | 755 | tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK, |
caa597bd DG |
756 | PAGE_READ | PAGE_WRITE | PAGE_EXEC, mmu_idx, |
757 | TARGET_PAGE_SIZE); | |
65d61643 DG |
758 | return 0; |
759 | } | |
760 | ||
bb218042 | 761 | /* 2. Translation is on, so look up the SLB */ |
7ef23068 | 762 | slb = slb_lookup(cpu, eaddr); |
0480884f | 763 | if (!slb) { |
b2899495 | 764 | /* No entry found, check if in-memory segment tables are in use */ |
ca79b3b7 | 765 | if (ppc64_use_proc_tbl(cpu)) { |
b2899495 SJS |
766 | /* TODO - Unsupported */ |
767 | error_report("Segment Table Support Unimplemented"); | |
768 | exit(1); | |
769 | } | |
770 | /* Segment still not found, generate the appropriate interrupt */ | |
caa597bd | 771 | if (rwx == 2) { |
27103424 | 772 | cs->exception_index = POWERPC_EXCP_ISEG; |
caa597bd DG |
773 | env->error_code = 0; |
774 | } else { | |
27103424 | 775 | cs->exception_index = POWERPC_EXCP_DSEG; |
caa597bd DG |
776 | env->error_code = 0; |
777 | env->spr[SPR_DAR] = eaddr; | |
778 | } | |
779 | return 1; | |
0480884f DG |
780 | } |
781 | ||
912acdf4 BH |
782 | skip_slb_search: |
783 | ||
bb218042 DG |
784 | /* 3. Check for segment level no-execute violation */ |
785 | if ((rwx == 2) && (slb->vsid & SLB_VSID_N)) { | |
8fe08fac | 786 | ppc_hash64_set_isi(cs, SRR1_NOEXEC_GUARD); |
caa597bd | 787 | return 1; |
bb218042 DG |
788 | } |
789 | ||
7f3bdc2d | 790 | /* 4. Locate the PTE in the hash table */ |
7222b94a DG |
791 | ptex = ppc_hash64_htab_lookup(cpu, slb, eaddr, &pte, &apshift); |
792 | if (ptex == -1) { | |
caa597bd | 793 | if (rwx == 2) { |
8fe08fac | 794 | ppc_hash64_set_isi(cs, SRR1_NOPTE); |
caa597bd | 795 | } else { |
da82c73a | 796 | int dsisr = DSISR_NOPTE; |
caa597bd | 797 | if (rwx == 1) { |
da82c73a | 798 | dsisr |= DSISR_ISSTORE; |
caa597bd | 799 | } |
8fe08fac | 800 | ppc_hash64_set_dsi(cs, eaddr, dsisr); |
caa597bd DG |
801 | } |
802 | return 1; | |
7f3bdc2d | 803 | } |
339aaf5b | 804 | qemu_log_mask(CPU_LOG_MMU, |
7222b94a | 805 | "found PTE at index %08" HWADDR_PRIx "\n", ptex); |
7f3bdc2d DG |
806 | |
807 | /* 5. Check access permissions */ | |
7f3bdc2d | 808 | |
07a68f99 | 809 | exec_prot = ppc_hash64_pte_noexec_guard(cpu, pte); |
7ef23068 DG |
810 | pp_prot = ppc_hash64_pte_prot(cpu, slb, pte); |
811 | amr_prot = ppc_hash64_amr_prot(cpu, pte); | |
07a68f99 | 812 | prot = exec_prot & pp_prot & amr_prot; |
6a980110 | 813 | |
caa597bd | 814 | if ((need_prot[rwx] & ~prot) != 0) { |
6a980110 | 815 | /* Access right violation */ |
339aaf5b | 816 | qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); |
caa597bd | 817 | if (rwx == 2) { |
a6152b52 | 818 | int srr1 = 0; |
07a68f99 SJS |
819 | if (PAGE_EXEC & ~exec_prot) { |
820 | srr1 |= SRR1_NOEXEC_GUARD; /* Access violates noexec or guard */ | |
821 | } else if (PAGE_EXEC & ~pp_prot) { | |
a6152b52 SJS |
822 | srr1 |= SRR1_PROTFAULT; /* Access violates access authority */ |
823 | } | |
824 | if (PAGE_EXEC & ~amr_prot) { | |
825 | srr1 |= SRR1_IAMR; /* Access violates virt pg class key prot */ | |
826 | } | |
8fe08fac | 827 | ppc_hash64_set_isi(cs, srr1); |
caa597bd | 828 | } else { |
da82c73a | 829 | int dsisr = 0; |
f80872e2 | 830 | if (need_prot[rwx] & ~pp_prot) { |
da82c73a | 831 | dsisr |= DSISR_PROTFAULT; |
f80872e2 | 832 | } |
caa597bd | 833 | if (rwx == 1) { |
da82c73a | 834 | dsisr |= DSISR_ISSTORE; |
f80872e2 DG |
835 | } |
836 | if (need_prot[rwx] & ~amr_prot) { | |
da82c73a | 837 | dsisr |= DSISR_AMR; |
caa597bd | 838 | } |
8fe08fac | 839 | ppc_hash64_set_dsi(cs, eaddr, dsisr); |
caa597bd DG |
840 | } |
841 | return 1; | |
6a980110 DG |
842 | } |
843 | ||
339aaf5b | 844 | qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); |
87dc3fd1 DG |
845 | |
846 | /* 6. Update PTE referenced and changed bits if necessary */ | |
847 | ||
b3440746 DG |
848 | new_pte1 = pte.pte1 | HPTE64_R_R; /* set referenced bit */ |
849 | if (rwx == 1) { | |
850 | new_pte1 |= HPTE64_R_C; /* set changed (dirty) bit */ | |
851 | } else { | |
852 | /* Treat the page as read-only for now, so that a later write | |
853 | * will pass through this function again to set the C bit */ | |
caa597bd | 854 | prot &= ~PAGE_WRITE; |
b3440746 DG |
855 | } |
856 | ||
857 | if (new_pte1 != pte.pte1) { | |
7222b94a | 858 | ppc_hash64_store_hpte(cpu, ptex, pte.pte0, new_pte1); |
7f3bdc2d | 859 | } |
0480884f | 860 | |
6d11d998 DG |
861 | /* 7. Determine the real address from the PTE */ |
862 | ||
be18b2b5 | 863 | raddr = deposit64(pte.pte1 & HPTE64_R_RPN, 0, apshift, eaddr); |
caa597bd | 864 | |
0c591eb0 | 865 | tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK, |
be18b2b5 | 866 | prot, mmu_idx, 1ULL << apshift); |
e01b4445 | 867 | |
e01b4445 | 868 | return 0; |
0480884f | 869 | } |
629bd516 | 870 | |
7ef23068 | 871 | hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr) |
f2ad6be8 | 872 | { |
7ef23068 | 873 | CPUPPCState *env = &cpu->env; |
5883d8b2 | 874 | ppc_slb_t *slb; |
7222b94a | 875 | hwaddr ptex, raddr; |
5883d8b2 | 876 | ppc_hash_pte64_t pte; |
be18b2b5 | 877 | unsigned apshift; |
5883d8b2 | 878 | |
912acdf4 | 879 | /* Handle real mode */ |
5883d8b2 DG |
880 | if (msr_dr == 0) { |
881 | /* In real mode the top 4 effective address bits are ignored */ | |
912acdf4 | 882 | raddr = addr & 0x0FFFFFFFFFFFFFFFULL; |
f2ad6be8 | 883 | |
912acdf4 BH |
884 | /* In HV mode, add HRMOR if top EA bit is clear */ |
885 | if ((msr_hv || !env->has_hv_mode) && !(addr >> 63)) { | |
886 | return raddr | env->spr[SPR_HRMOR]; | |
887 | } | |
888 | ||
889 | /* Otherwise, check VPM for RMA vs VRMA */ | |
890 | if (env->spr[SPR_LPCR] & LPCR_VPM0) { | |
891 | slb = &env->vrma_slb; | |
892 | if (!slb->sps) { | |
893 | return -1; | |
894 | } | |
895 | } else if (raddr < env->rmls) { | |
896 | /* RMA. Check bounds in RMLS */ | |
897 | return raddr | env->spr[SPR_RMOR]; | |
898 | } else { | |
899 | return -1; | |
900 | } | |
901 | } else { | |
902 | slb = slb_lookup(cpu, addr); | |
903 | if (!slb) { | |
904 | return -1; | |
905 | } | |
5883d8b2 DG |
906 | } |
907 | ||
7222b94a DG |
908 | ptex = ppc_hash64_htab_lookup(cpu, slb, addr, &pte, &apshift); |
909 | if (ptex == -1) { | |
f2ad6be8 DG |
910 | return -1; |
911 | } | |
912 | ||
be18b2b5 | 913 | return deposit64(pte.pte1 & HPTE64_R_RPN, 0, apshift, addr) |
cd6a9bb6 | 914 | & TARGET_PAGE_MASK; |
f2ad6be8 | 915 | } |
c1385933 | 916 | |
7222b94a DG |
917 | void ppc_hash64_store_hpte(PowerPCCPU *cpu, hwaddr ptex, |
918 | uint64_t pte0, uint64_t pte1) | |
c1385933 | 919 | { |
e57ca75c | 920 | hwaddr base = ppc_hash64_hpt_base(cpu); |
7222b94a | 921 | hwaddr offset = ptex * HASH_PTE_SIZE_64; |
c1385933 | 922 | |
e57ca75c DG |
923 | if (cpu->vhyp) { |
924 | PPCVirtualHypervisorClass *vhc = | |
925 | PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp); | |
926 | vhc->store_hpte(cpu->vhyp, ptex, pte0, pte1); | |
a9ab06d1 | 927 | return; |
c1385933 AK |
928 | } |
929 | ||
e57ca75c DG |
930 | stq_phys(CPU(cpu)->as, base + offset, pte0); |
931 | stq_phys(CPU(cpu)->as, base + offset + HASH_PTE_SIZE_64 / 2, pte1); | |
c1385933 | 932 | } |
61a36c9b | 933 | |
7222b94a | 934 | void ppc_hash64_tlb_flush_hpte(PowerPCCPU *cpu, target_ulong ptex, |
61a36c9b DG |
935 | target_ulong pte0, target_ulong pte1) |
936 | { | |
937 | /* | |
938 | * XXX: given the fact that there are too many segments to | |
939 | * invalidate, and we still don't have a tlb_flush_mask(env, n, | |
940 | * mask) in QEMU, we just invalidate all TLBs | |
941 | */ | |
d76ab5e1 | 942 | cpu->env.tlb_need_flush = TLB_NEED_GLOBAL_FLUSH | TLB_NEED_LOCAL_FLUSH; |
61a36c9b | 943 | } |
4b3fc377 | 944 | |
5ad55315 | 945 | static void ppc_hash64_update_rmls(PowerPCCPU *cpu) |
912acdf4 | 946 | { |
8fe08fac | 947 | CPUPPCState *env = &cpu->env; |
912acdf4 BH |
948 | uint64_t lpcr = env->spr[SPR_LPCR]; |
949 | ||
950 | /* | |
951 | * This is the full 4 bits encoding of POWER8. Previous | |
952 | * CPUs only support a subset of these but the filtering | |
953 | * is done when writing LPCR | |
954 | */ | |
955 | switch ((lpcr & LPCR_RMLS) >> LPCR_RMLS_SHIFT) { | |
956 | case 0x8: /* 32MB */ | |
957 | env->rmls = 0x2000000ull; | |
958 | break; | |
959 | case 0x3: /* 64MB */ | |
960 | env->rmls = 0x4000000ull; | |
961 | break; | |
962 | case 0x7: /* 128MB */ | |
963 | env->rmls = 0x8000000ull; | |
964 | break; | |
965 | case 0x4: /* 256MB */ | |
966 | env->rmls = 0x10000000ull; | |
967 | break; | |
968 | case 0x2: /* 1GB */ | |
969 | env->rmls = 0x40000000ull; | |
970 | break; | |
971 | case 0x1: /* 16GB */ | |
972 | env->rmls = 0x400000000ull; | |
973 | break; | |
974 | default: | |
975 | /* What to do here ??? */ | |
976 | env->rmls = 0; | |
977 | } | |
978 | } | |
979 | ||
5ad55315 | 980 | static void ppc_hash64_update_vrma(PowerPCCPU *cpu) |
912acdf4 | 981 | { |
8fe08fac | 982 | CPUPPCState *env = &cpu->env; |
b07c59f7 | 983 | const PPCHash64SegmentPageSizes *sps = NULL; |
912acdf4 BH |
984 | target_ulong esid, vsid, lpcr; |
985 | ppc_slb_t *slb = &env->vrma_slb; | |
986 | uint32_t vrmasd; | |
987 | int i; | |
988 | ||
989 | /* First clear it */ | |
990 | slb->esid = slb->vsid = 0; | |
991 | slb->sps = NULL; | |
992 | ||
993 | /* Is VRMA enabled ? */ | |
994 | lpcr = env->spr[SPR_LPCR]; | |
995 | if (!(lpcr & LPCR_VPM0)) { | |
996 | return; | |
997 | } | |
998 | ||
999 | /* Make one up. Mostly ignore the ESID which will not be | |
1000 | * needed for translation | |
1001 | */ | |
1002 | vsid = SLB_VSID_VRMA; | |
1003 | vrmasd = (lpcr & LPCR_VRMASD) >> LPCR_VRMASD_SHIFT; | |
1004 | vsid |= (vrmasd << 4) & (SLB_VSID_L | SLB_VSID_LP); | |
1005 | esid = SLB_ESID_V; | |
1006 | ||
8fe08fac | 1007 | for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) { |
b07c59f7 | 1008 | const PPCHash64SegmentPageSizes *sps1 = &cpu->hash64_opts->sps[i]; |
912acdf4 BH |
1009 | |
1010 | if (!sps1->page_shift) { | |
1011 | break; | |
1012 | } | |
1013 | ||
1014 | if ((vsid & SLB_VSID_LLP_MASK) == sps1->slb_enc) { | |
1015 | sps = sps1; | |
1016 | break; | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | if (!sps) { | |
1021 | error_report("Bad page size encoding esid 0x"TARGET_FMT_lx | |
1022 | " vsid 0x"TARGET_FMT_lx, esid, vsid); | |
1023 | return; | |
1024 | } | |
1025 | ||
1026 | slb->vsid = vsid; | |
1027 | slb->esid = esid; | |
1028 | slb->sps = sps; | |
1029 | } | |
1030 | ||
5ad55315 | 1031 | void ppc_store_lpcr(PowerPCCPU *cpu, target_ulong val) |
4b3fc377 | 1032 | { |
5ad55315 | 1033 | CPUPPCState *env = &cpu->env; |
4b3fc377 BH |
1034 | uint64_t lpcr = 0; |
1035 | ||
1036 | /* Filter out bits */ | |
0941d728 DG |
1037 | switch (env->mmu_model) { |
1038 | case POWERPC_MMU_64B: /* 970 */ | |
4b3fc377 BH |
1039 | if (val & 0x40) { |
1040 | lpcr |= LPCR_LPES0; | |
1041 | } | |
1042 | if (val & 0x8000000000000000ull) { | |
1043 | lpcr |= LPCR_LPES1; | |
1044 | } | |
1045 | if (val & 0x20) { | |
1046 | lpcr |= (0x4ull << LPCR_RMLS_SHIFT); | |
1047 | } | |
1048 | if (val & 0x4000000000000000ull) { | |
1049 | lpcr |= (0x2ull << LPCR_RMLS_SHIFT); | |
1050 | } | |
1051 | if (val & 0x2000000000000000ull) { | |
1052 | lpcr |= (0x1ull << LPCR_RMLS_SHIFT); | |
1053 | } | |
1054 | env->spr[SPR_RMOR] = ((lpcr >> 41) & 0xffffull) << 26; | |
1055 | ||
1056 | /* XXX We could also write LPID from HID4 here | |
1057 | * but since we don't tag any translation on it | |
1058 | * it doesn't actually matter | |
1059 | */ | |
1060 | /* XXX For proper emulation of 970 we also need | |
1061 | * to dig HRMOR out of HID5 | |
1062 | */ | |
1063 | break; | |
0941d728 | 1064 | case POWERPC_MMU_2_03: /* P5p */ |
4b3fc377 BH |
1065 | lpcr = val & (LPCR_RMLS | LPCR_ILE | |
1066 | LPCR_LPES0 | LPCR_LPES1 | | |
1067 | LPCR_RMI | LPCR_HDICE); | |
1068 | break; | |
0941d728 | 1069 | case POWERPC_MMU_2_06: /* P7 */ |
4b3fc377 BH |
1070 | lpcr = val & (LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_DPFD | |
1071 | LPCR_VRMASD | LPCR_RMLS | LPCR_ILE | | |
1072 | LPCR_P7_PECE0 | LPCR_P7_PECE1 | LPCR_P7_PECE2 | | |
1073 | LPCR_MER | LPCR_TC | | |
1074 | LPCR_LPES0 | LPCR_LPES1 | LPCR_HDICE); | |
1075 | break; | |
0941d728 | 1076 | case POWERPC_MMU_2_07: /* P8 */ |
4b3fc377 BH |
1077 | lpcr = val & (LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_KBV | |
1078 | LPCR_DPFD | LPCR_VRMASD | LPCR_RMLS | LPCR_ILE | | |
1079 | LPCR_AIL | LPCR_ONL | LPCR_P8_PECE0 | LPCR_P8_PECE1 | | |
1080 | LPCR_P8_PECE2 | LPCR_P8_PECE3 | LPCR_P8_PECE4 | | |
1081 | LPCR_MER | LPCR_TC | LPCR_LPES0 | LPCR_HDICE); | |
1082 | break; | |
0941d728 | 1083 | case POWERPC_MMU_3_00: /* P9 */ |
18aa49ec SJS |
1084 | lpcr = val & (LPCR_VPM1 | LPCR_ISL | LPCR_KBV | LPCR_DPFD | |
1085 | (LPCR_PECE_U_MASK & LPCR_HVEE) | LPCR_ILE | LPCR_AIL | | |
1086 | LPCR_UPRT | LPCR_EVIRT | LPCR_ONL | | |
1087 | (LPCR_PECE_L_MASK & (LPCR_PDEE | LPCR_HDEE | LPCR_EEE | | |
1088 | LPCR_DEE | LPCR_OEE)) | LPCR_MER | LPCR_GTSE | LPCR_TC | | |
1089 | LPCR_HEIC | LPCR_LPES0 | LPCR_HVICE | LPCR_HDICE); | |
1090 | break; | |
4b3fc377 BH |
1091 | default: |
1092 | ; | |
1093 | } | |
1094 | env->spr[SPR_LPCR] = lpcr; | |
8fe08fac DG |
1095 | ppc_hash64_update_rmls(cpu); |
1096 | ppc_hash64_update_vrma(cpu); | |
4b3fc377 | 1097 | } |
a059471d | 1098 | |
5ad55315 DG |
1099 | void helper_store_lpcr(CPUPPCState *env, target_ulong val) |
1100 | { | |
1101 | PowerPCCPU *cpu = ppc_env_get_cpu(env); | |
1102 | ||
1103 | ppc_store_lpcr(cpu, val); | |
1104 | } | |
1105 | ||
a059471d DG |
1106 | void ppc_hash64_init(PowerPCCPU *cpu) |
1107 | { | |
1108 | CPUPPCState *env = &cpu->env; | |
1109 | PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); | |
1110 | ||
21e405f1 DG |
1111 | if (!pcc->hash64_opts) { |
1112 | assert(!(env->mmu_model & POWERPC_MMU_64)); | |
1113 | return; | |
a059471d | 1114 | } |
21e405f1 DG |
1115 | |
1116 | cpu->hash64_opts = g_memdup(pcc->hash64_opts, sizeof(*cpu->hash64_opts)); | |
a059471d DG |
1117 | } |
1118 | ||
1119 | void ppc_hash64_finalize(PowerPCCPU *cpu) | |
1120 | { | |
b07c59f7 | 1121 | g_free(cpu->hash64_opts); |
a059471d | 1122 | } |
b07c59f7 | 1123 | |
21e405f1 | 1124 | const PPCHash64Options ppc_hash64_opts_basic = { |
58969eee | 1125 | .flags = 0, |
67d7d66f | 1126 | .slb_size = 64, |
21e405f1 DG |
1127 | .sps = { |
1128 | { .page_shift = 12, /* 4K */ | |
1129 | .slb_enc = 0, | |
1130 | .enc = { { .page_shift = 12, .pte_enc = 0 } } | |
1131 | }, | |
1132 | { .page_shift = 24, /* 16M */ | |
1133 | .slb_enc = 0x100, | |
1134 | .enc = { { .page_shift = 24, .pte_enc = 0 } } | |
1135 | }, | |
1136 | }, | |
1137 | }; | |
1138 | ||
b07c59f7 | 1139 | const PPCHash64Options ppc_hash64_opts_POWER7 = { |
26cd35b8 | 1140 | .flags = PPC_HASH64_1TSEG | PPC_HASH64_AMR | PPC_HASH64_CI_LARGEPAGE, |
67d7d66f | 1141 | .slb_size = 32, |
b07c59f7 DG |
1142 | .sps = { |
1143 | { | |
1144 | .page_shift = 12, /* 4K */ | |
1145 | .slb_enc = 0, | |
1146 | .enc = { { .page_shift = 12, .pte_enc = 0 }, | |
1147 | { .page_shift = 16, .pte_enc = 0x7 }, | |
1148 | { .page_shift = 24, .pte_enc = 0x38 }, }, | |
1149 | }, | |
1150 | { | |
1151 | .page_shift = 16, /* 64K */ | |
1152 | .slb_enc = SLB_VSID_64K, | |
1153 | .enc = { { .page_shift = 16, .pte_enc = 0x1 }, | |
1154 | { .page_shift = 24, .pte_enc = 0x8 }, }, | |
1155 | }, | |
1156 | { | |
1157 | .page_shift = 24, /* 16M */ | |
1158 | .slb_enc = SLB_VSID_16M, | |
1159 | .enc = { { .page_shift = 24, .pte_enc = 0 }, }, | |
1160 | }, | |
1161 | { | |
1162 | .page_shift = 34, /* 16G */ | |
1163 | .slb_enc = SLB_VSID_16G, | |
1164 | .enc = { { .page_shift = 34, .pte_enc = 0x3 }, }, | |
1165 | }, | |
1166 | } | |
1167 | }; |