1 #include "sysemu/sysemu.h"
3 #include "helper_regs.h"
4 #include "hw/ppc/spapr.h"
5 #include "mmu-hash64.h"
7 static target_ulong compute_tlbie_rb(target_ulong v, target_ulong r,
8 target_ulong pte_index)
10 target_ulong rb, va_low;
12 rb = (v & ~0x7fULL) << 16; /* AVA field */
13 va_low = pte_index >> 3;
14 if (v & HPTE64_V_SECONDARY) {
17 /* xor vsid from AVA */
18 if (!(v & HPTE64_V_1TB_SEG)) {
24 if (v & HPTE64_V_LARGE) {
25 rb |= 1; /* L field */
26 #if 0 /* Disable that P7 specific bit for now */
28 /* non-16MB large page, must be 64k */
29 /* (masks depend on page size) */
30 rb |= 0x1000; /* page encoding in LP field */
31 rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
32 rb |= (va_low & 0xfe); /* AVAL field */
37 rb |= (va_low & 0x7ff) << 12; /* remaining 11b of AVA */
39 rb |= (v >> 54) & 0x300; /* B field */
43 static target_ulong h_enter(PowerPCCPU *cpu, sPAPREnvironment *spapr,
44 target_ulong opcode, target_ulong *args)
46 CPUPPCState *env = &cpu->env;
47 target_ulong flags = args[0];
48 target_ulong pte_index = args[1];
49 target_ulong pteh = args[2];
50 target_ulong ptel = args[3];
51 target_ulong page_shift = 12;
56 /* only handle 4k and 16M pages for now */
57 if (pteh & HPTE64_V_LARGE) {
58 #if 0 /* We don't support 64k pages yet */
59 if ((ptel & 0xf000) == 0x1000) {
63 if ((ptel & 0xff000) == 0) {
66 /* lowest AVA bit must be 0 for 16M pages */
75 raddr = (ptel & HPTE64_R_RPN) & ~((1ULL << page_shift) - 1);
77 if (raddr < spapr->ram_limit) {
78 /* Regular RAM - should have WIMG=0010 */
79 if ((ptel & HPTE64_R_WIMG) != HPTE64_R_M) {
83 /* Looks like an IO address */
84 /* FIXME: What WIMG combinations could be sensible for IO?
85 * For now we allow WIMG=010x, but are there others? */
86 /* FIXME: Should we check against registered IO addresses? */
87 if ((ptel & (HPTE64_R_W | HPTE64_R_I | HPTE64_R_M)) != HPTE64_R_I) {
94 if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
97 if (likely((flags & H_EXACT) == 0)) {
99 hpte = pte_index * HASH_PTE_SIZE_64;
104 if ((ppc_hash64_load_hpte0(env, hpte) & HPTE64_V_VALID) == 0) {
107 hpte += HASH_PTE_SIZE_64;
111 hpte = pte_index * HASH_PTE_SIZE_64;
112 if (ppc_hash64_load_hpte0(env, hpte) & HPTE64_V_VALID) {
116 ppc_hash64_store_hpte1(env, hpte, ptel);
117 /* eieio(); FIXME: need some sort of barrier for smp? */
118 ppc_hash64_store_hpte0(env, hpte, pteh);
120 args[0] = pte_index + i;
126 REMOVE_NOT_FOUND = 1,
131 static target_ulong remove_hpte(CPUPPCState *env, target_ulong ptex,
134 target_ulong *vp, target_ulong *rp)
137 target_ulong v, r, rb;
139 if ((ptex * HASH_PTE_SIZE_64) & ~env->htab_mask) {
143 hpte = ptex * HASH_PTE_SIZE_64;
145 v = ppc_hash64_load_hpte0(env, hpte);
146 r = ppc_hash64_load_hpte1(env, hpte);
148 if ((v & HPTE64_V_VALID) == 0 ||
149 ((flags & H_AVPN) && (v & ~0x7fULL) != avpn) ||
150 ((flags & H_ANDCOND) && (v & avpn) != 0)) {
151 return REMOVE_NOT_FOUND;
155 ppc_hash64_store_hpte0(env, hpte, 0);
156 rb = compute_tlbie_rb(v, r, ptex);
157 ppc_tlb_invalidate_one(env, rb);
158 return REMOVE_SUCCESS;
161 static target_ulong h_remove(PowerPCCPU *cpu, sPAPREnvironment *spapr,
162 target_ulong opcode, target_ulong *args)
164 CPUPPCState *env = &cpu->env;
165 target_ulong flags = args[0];
166 target_ulong pte_index = args[1];
167 target_ulong avpn = args[2];
170 ret = remove_hpte(env, pte_index, avpn, flags,
177 case REMOVE_NOT_FOUND:
190 #define H_BULK_REMOVE_TYPE 0xc000000000000000ULL
191 #define H_BULK_REMOVE_REQUEST 0x4000000000000000ULL
192 #define H_BULK_REMOVE_RESPONSE 0x8000000000000000ULL
193 #define H_BULK_REMOVE_END 0xc000000000000000ULL
194 #define H_BULK_REMOVE_CODE 0x3000000000000000ULL
195 #define H_BULK_REMOVE_SUCCESS 0x0000000000000000ULL
196 #define H_BULK_REMOVE_NOT_FOUND 0x1000000000000000ULL
197 #define H_BULK_REMOVE_PARM 0x2000000000000000ULL
198 #define H_BULK_REMOVE_HW 0x3000000000000000ULL
199 #define H_BULK_REMOVE_RC 0x0c00000000000000ULL
200 #define H_BULK_REMOVE_FLAGS 0x0300000000000000ULL
201 #define H_BULK_REMOVE_ABSOLUTE 0x0000000000000000ULL
202 #define H_BULK_REMOVE_ANDCOND 0x0100000000000000ULL
203 #define H_BULK_REMOVE_AVPN 0x0200000000000000ULL
204 #define H_BULK_REMOVE_PTEX 0x00ffffffffffffffULL
206 #define H_BULK_REMOVE_MAX_BATCH 4
208 static target_ulong h_bulk_remove(PowerPCCPU *cpu, sPAPREnvironment *spapr,
209 target_ulong opcode, target_ulong *args)
211 CPUPPCState *env = &cpu->env;
214 for (i = 0; i < H_BULK_REMOVE_MAX_BATCH; i++) {
215 target_ulong *tsh = &args[i*2];
216 target_ulong tsl = args[i*2 + 1];
217 target_ulong v, r, ret;
219 if ((*tsh & H_BULK_REMOVE_TYPE) == H_BULK_REMOVE_END) {
221 } else if ((*tsh & H_BULK_REMOVE_TYPE) != H_BULK_REMOVE_REQUEST) {
225 *tsh &= H_BULK_REMOVE_PTEX | H_BULK_REMOVE_FLAGS;
226 *tsh |= H_BULK_REMOVE_RESPONSE;
228 if ((*tsh & H_BULK_REMOVE_ANDCOND) && (*tsh & H_BULK_REMOVE_AVPN)) {
229 *tsh |= H_BULK_REMOVE_PARM;
233 ret = remove_hpte(env, *tsh & H_BULK_REMOVE_PTEX, tsl,
234 (*tsh & H_BULK_REMOVE_FLAGS) >> 26,
241 *tsh |= (r & (HPTE64_R_C | HPTE64_R_R)) << 43;
255 static target_ulong h_protect(PowerPCCPU *cpu, sPAPREnvironment *spapr,
256 target_ulong opcode, target_ulong *args)
258 CPUPPCState *env = &cpu->env;
259 target_ulong flags = args[0];
260 target_ulong pte_index = args[1];
261 target_ulong avpn = args[2];
263 target_ulong v, r, rb;
265 if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
269 hpte = pte_index * HASH_PTE_SIZE_64;
271 v = ppc_hash64_load_hpte0(env, hpte);
272 r = ppc_hash64_load_hpte1(env, hpte);
274 if ((v & HPTE64_V_VALID) == 0 ||
275 ((flags & H_AVPN) && (v & ~0x7fULL) != avpn)) {
279 r &= ~(HPTE64_R_PP0 | HPTE64_R_PP | HPTE64_R_N |
280 HPTE64_R_KEY_HI | HPTE64_R_KEY_LO);
281 r |= (flags << 55) & HPTE64_R_PP0;
282 r |= (flags << 48) & HPTE64_R_KEY_HI;
283 r |= flags & (HPTE64_R_PP | HPTE64_R_N | HPTE64_R_KEY_LO);
284 rb = compute_tlbie_rb(v, r, pte_index);
285 ppc_hash64_store_hpte0(env, hpte, v & ~HPTE64_V_VALID);
286 ppc_tlb_invalidate_one(env, rb);
287 ppc_hash64_store_hpte1(env, hpte, r);
288 /* Don't need a memory barrier, due to qemu's global lock */
289 ppc_hash64_store_hpte0(env, hpte, v);
293 static target_ulong h_read(PowerPCCPU *cpu, sPAPREnvironment *spapr,
294 target_ulong opcode, target_ulong *args)
296 CPUPPCState *env = &cpu->env;
297 target_ulong flags = args[0];
298 target_ulong pte_index = args[1];
300 int i, ridx, n_entries = 1;
302 if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
306 if (flags & H_READ_4) {
307 /* Clear the two low order bits */
308 pte_index &= ~(3ULL);
312 hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
314 for (i = 0, ridx = 0; i < n_entries; i++) {
315 args[ridx++] = ldq_p(hpte);
316 args[ridx++] = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
317 hpte += HASH_PTE_SIZE_64;
323 static target_ulong h_set_dabr(PowerPCCPU *cpu, sPAPREnvironment *spapr,
324 target_ulong opcode, target_ulong *args)
326 /* FIXME: actually implement this */
330 #define FLAGS_REGISTER_VPA 0x0000200000000000ULL
331 #define FLAGS_REGISTER_DTL 0x0000400000000000ULL
332 #define FLAGS_REGISTER_SLBSHADOW 0x0000600000000000ULL
333 #define FLAGS_DEREGISTER_VPA 0x0000a00000000000ULL
334 #define FLAGS_DEREGISTER_DTL 0x0000c00000000000ULL
335 #define FLAGS_DEREGISTER_SLBSHADOW 0x0000e00000000000ULL
337 #define VPA_MIN_SIZE 640
338 #define VPA_SIZE_OFFSET 0x4
339 #define VPA_SHARED_PROC_OFFSET 0x9
340 #define VPA_SHARED_PROC_VAL 0x2
342 static target_ulong register_vpa(CPUPPCState *env, target_ulong vpa)
348 hcall_dprintf("Can't cope with registering a VPA at logical 0\n");
352 if (vpa % env->dcache_line_size) {
355 /* FIXME: bounds check the address */
357 size = lduw_be_phys(vpa + 0x4);
359 if (size < VPA_MIN_SIZE) {
363 /* VPA is not allowed to cross a page boundary */
364 if ((vpa / 4096) != ((vpa + size - 1) / 4096)) {
370 tmp = ldub_phys(env->vpa_addr + VPA_SHARED_PROC_OFFSET);
371 tmp |= VPA_SHARED_PROC_VAL;
372 stb_phys(env->vpa_addr + VPA_SHARED_PROC_OFFSET, tmp);
377 static target_ulong deregister_vpa(CPUPPCState *env, target_ulong vpa)
379 if (env->slb_shadow_addr) {
391 static target_ulong register_slb_shadow(CPUPPCState *env, target_ulong addr)
396 hcall_dprintf("Can't cope with SLB shadow at logical 0\n");
400 size = ldl_be_phys(addr + 0x4);
405 if ((addr / 4096) != ((addr + size - 1) / 4096)) {
409 if (!env->vpa_addr) {
413 env->slb_shadow_addr = addr;
414 env->slb_shadow_size = size;
419 static target_ulong deregister_slb_shadow(CPUPPCState *env, target_ulong addr)
421 env->slb_shadow_addr = 0;
422 env->slb_shadow_size = 0;
426 static target_ulong register_dtl(CPUPPCState *env, target_ulong addr)
431 hcall_dprintf("Can't cope with DTL at logical 0\n");
435 size = ldl_be_phys(addr + 0x4);
441 if (!env->vpa_addr) {
445 env->dtl_addr = addr;
446 env->dtl_size = size;
451 static target_ulong deregister_dtl(CPUPPCState *env, target_ulong addr)
459 static target_ulong h_register_vpa(PowerPCCPU *cpu, sPAPREnvironment *spapr,
460 target_ulong opcode, target_ulong *args)
462 target_ulong flags = args[0];
463 target_ulong procno = args[1];
464 target_ulong vpa = args[2];
465 target_ulong ret = H_PARAMETER;
469 tcpu = qemu_get_cpu(procno);
473 tenv = tcpu->env_ptr;
476 case FLAGS_REGISTER_VPA:
477 ret = register_vpa(tenv, vpa);
480 case FLAGS_DEREGISTER_VPA:
481 ret = deregister_vpa(tenv, vpa);
484 case FLAGS_REGISTER_SLBSHADOW:
485 ret = register_slb_shadow(tenv, vpa);
488 case FLAGS_DEREGISTER_SLBSHADOW:
489 ret = deregister_slb_shadow(tenv, vpa);
492 case FLAGS_REGISTER_DTL:
493 ret = register_dtl(tenv, vpa);
496 case FLAGS_DEREGISTER_DTL:
497 ret = deregister_dtl(tenv, vpa);
504 static target_ulong h_cede(PowerPCCPU *cpu, sPAPREnvironment *spapr,
505 target_ulong opcode, target_ulong *args)
507 CPUPPCState *env = &cpu->env;
508 CPUState *cs = CPU(cpu);
510 env->msr |= (1ULL << MSR_EE);
511 hreg_compute_hflags(env);
512 if (!cpu_has_work(cs)) {
514 env->exception_index = EXCP_HLT;
515 cs->exit_request = 1;
520 static target_ulong h_rtas(PowerPCCPU *cpu, sPAPREnvironment *spapr,
521 target_ulong opcode, target_ulong *args)
523 target_ulong rtas_r3 = args[0];
524 uint32_t token = ldl_be_phys(rtas_r3);
525 uint32_t nargs = ldl_be_phys(rtas_r3 + 4);
526 uint32_t nret = ldl_be_phys(rtas_r3 + 8);
528 return spapr_rtas_call(cpu, spapr, token, nargs, rtas_r3 + 12,
529 nret, rtas_r3 + 12 + 4*nargs);
532 static target_ulong h_logical_load(PowerPCCPU *cpu, sPAPREnvironment *spapr,
533 target_ulong opcode, target_ulong *args)
535 target_ulong size = args[0];
536 target_ulong addr = args[1];
540 args[0] = ldub_phys(addr);
543 args[0] = lduw_phys(addr);
546 args[0] = ldl_phys(addr);
549 args[0] = ldq_phys(addr);
555 static target_ulong h_logical_store(PowerPCCPU *cpu, sPAPREnvironment *spapr,
556 target_ulong opcode, target_ulong *args)
558 target_ulong size = args[0];
559 target_ulong addr = args[1];
560 target_ulong val = args[2];
579 static target_ulong h_logical_memop(PowerPCCPU *cpu, sPAPREnvironment *spapr,
580 target_ulong opcode, target_ulong *args)
582 target_ulong dst = args[0]; /* Destination address */
583 target_ulong src = args[1]; /* Source address */
584 target_ulong esize = args[2]; /* Element size (0=1,1=2,2=4,3=8) */
585 target_ulong count = args[3]; /* Element count */
586 target_ulong op = args[4]; /* 0 = copy, 1 = invert */
588 unsigned int mask = (1 << esize) - 1;
589 int step = 1 << esize;
591 if (count > 0x80000000) {
595 if ((dst & mask) || (src & mask) || (op > 1)) {
599 if (dst >= src && dst < (src + (count << esize))) {
600 dst = dst + ((count - 1) << esize);
601 src = src + ((count - 1) << esize);
608 tmp = ldub_phys(src);
611 tmp = lduw_phys(src);
646 static target_ulong h_logical_icbi(PowerPCCPU *cpu, sPAPREnvironment *spapr,
647 target_ulong opcode, target_ulong *args)
649 /* Nothing to do on emulation, KVM will trap this in the kernel */
653 static target_ulong h_logical_dcbf(PowerPCCPU *cpu, sPAPREnvironment *spapr,
654 target_ulong opcode, target_ulong *args)
656 /* Nothing to do on emulation, KVM will trap this in the kernel */
660 static spapr_hcall_fn papr_hypercall_table[(MAX_HCALL_OPCODE / 4) + 1];
661 static spapr_hcall_fn kvmppc_hypercall_table[KVMPPC_HCALL_MAX - KVMPPC_HCALL_BASE + 1];
663 void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn)
665 spapr_hcall_fn *slot;
667 if (opcode <= MAX_HCALL_OPCODE) {
668 assert((opcode & 0x3) == 0);
670 slot = &papr_hypercall_table[opcode / 4];
672 assert((opcode >= KVMPPC_HCALL_BASE) && (opcode <= KVMPPC_HCALL_MAX));
674 slot = &kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE];
681 target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode,
684 if ((opcode <= MAX_HCALL_OPCODE)
685 && ((opcode & 0x3) == 0)) {
686 spapr_hcall_fn fn = papr_hypercall_table[opcode / 4];
689 return fn(cpu, spapr, opcode, args);
691 } else if ((opcode >= KVMPPC_HCALL_BASE) &&
692 (opcode <= KVMPPC_HCALL_MAX)) {
693 spapr_hcall_fn fn = kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE];
696 return fn(cpu, spapr, opcode, args);
700 hcall_dprintf("Unimplemented hcall 0x" TARGET_FMT_lx "\n", opcode);
704 static void hypercall_register_types(void)
707 spapr_register_hypercall(H_ENTER, h_enter);
708 spapr_register_hypercall(H_REMOVE, h_remove);
709 spapr_register_hypercall(H_PROTECT, h_protect);
710 spapr_register_hypercall(H_READ, h_read);
713 spapr_register_hypercall(H_BULK_REMOVE, h_bulk_remove);
716 spapr_register_hypercall(H_SET_DABR, h_set_dabr);
719 spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa);
720 spapr_register_hypercall(H_CEDE, h_cede);
722 /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenciate
723 * here between the "CI" and the "CACHE" variants, they will use whatever
724 * mapping attributes qemu is using. When using KVM, the kernel will
725 * enforce the attributes more strongly
727 spapr_register_hypercall(H_LOGICAL_CI_LOAD, h_logical_load);
728 spapr_register_hypercall(H_LOGICAL_CI_STORE, h_logical_store);
729 spapr_register_hypercall(H_LOGICAL_CACHE_LOAD, h_logical_load);
730 spapr_register_hypercall(H_LOGICAL_CACHE_STORE, h_logical_store);
731 spapr_register_hypercall(H_LOGICAL_ICBI, h_logical_icbi);
732 spapr_register_hypercall(H_LOGICAL_DCBF, h_logical_dcbf);
733 spapr_register_hypercall(KVMPPC_H_LOGICAL_MEMOP, h_logical_memop);
735 /* qemu/KVM-PPC specific hcalls */
736 spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas);
739 type_init(hypercall_register_types)