1 #include "sysemu/sysemu.h"
3 #include "sysemu/sysemu.h"
4 #include "helper_regs.h"
7 #define HPTES_PER_GROUP 8
9 #define HPTE_V_SSIZE_SHIFT 62
10 #define HPTE_V_AVPN_SHIFT 7
11 #define HPTE_V_AVPN 0x3fffffffffffff80ULL
12 #define HPTE_V_AVPN_VAL(x) (((x) & HPTE_V_AVPN) >> HPTE_V_AVPN_SHIFT)
13 #define HPTE_V_COMPARE(x, y) (!(((x) ^ (y)) & 0xffffffffffffff80UL))
14 #define HPTE_V_BOLTED 0x0000000000000010ULL
15 #define HPTE_V_LOCK 0x0000000000000008ULL
16 #define HPTE_V_LARGE 0x0000000000000004ULL
17 #define HPTE_V_SECONDARY 0x0000000000000002ULL
18 #define HPTE_V_VALID 0x0000000000000001ULL
20 #define HPTE_R_PP0 0x8000000000000000ULL
21 #define HPTE_R_TS 0x4000000000000000ULL
22 #define HPTE_R_KEY_HI 0x3000000000000000ULL
23 #define HPTE_R_RPN_SHIFT 12
24 #define HPTE_R_RPN 0x3ffffffffffff000ULL
25 #define HPTE_R_FLAGS 0x00000000000003ffULL
26 #define HPTE_R_PP 0x0000000000000003ULL
27 #define HPTE_R_N 0x0000000000000004ULL
28 #define HPTE_R_G 0x0000000000000008ULL
29 #define HPTE_R_M 0x0000000000000010ULL
30 #define HPTE_R_I 0x0000000000000020ULL
31 #define HPTE_R_W 0x0000000000000040ULL
32 #define HPTE_R_WIMG 0x0000000000000078ULL
33 #define HPTE_R_C 0x0000000000000080ULL
34 #define HPTE_R_R 0x0000000000000100ULL
35 #define HPTE_R_KEY_LO 0x0000000000000e00ULL
37 #define HPTE_V_1TB_SEG 0x4000000000000000ULL
38 #define HPTE_V_VRMA_MASK 0x4001ffffff000000ULL
40 static target_ulong compute_tlbie_rb(target_ulong v, target_ulong r,
41 target_ulong pte_index)
43 target_ulong rb, va_low;
45 rb = (v & ~0x7fULL) << 16; /* AVA field */
46 va_low = pte_index >> 3;
47 if (v & HPTE_V_SECONDARY) {
50 /* xor vsid from AVA */
51 if (!(v & HPTE_V_1TB_SEG)) {
57 if (v & HPTE_V_LARGE) {
58 rb |= 1; /* L field */
59 #if 0 /* Disable that P7 specific bit for now */
61 /* non-16MB large page, must be 64k */
62 /* (masks depend on page size) */
63 rb |= 0x1000; /* page encoding in LP field */
64 rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
65 rb |= (va_low & 0xfe); /* AVAL field */
70 rb |= (va_low & 0x7ff) << 12; /* remaining 11b of AVA */
72 rb |= (v >> 54) & 0x300; /* B field */
76 static target_ulong h_enter(PowerPCCPU *cpu, sPAPREnvironment *spapr,
77 target_ulong opcode, target_ulong *args)
79 CPUPPCState *env = &cpu->env;
80 target_ulong flags = args[0];
81 target_ulong pte_index = args[1];
82 target_ulong pteh = args[2];
83 target_ulong ptel = args[3];
84 target_ulong page_shift = 12;
89 /* only handle 4k and 16M pages for now */
90 if (pteh & HPTE_V_LARGE) {
91 #if 0 /* We don't support 64k pages yet */
92 if ((ptel & 0xf000) == 0x1000) {
96 if ((ptel & 0xff000) == 0) {
99 /* lowest AVA bit must be 0 for 16M pages */
108 raddr = (ptel & HPTE_R_RPN) & ~((1ULL << page_shift) - 1);
110 if (raddr < spapr->ram_limit) {
111 /* Regular RAM - should have WIMG=0010 */
112 if ((ptel & HPTE_R_WIMG) != HPTE_R_M) {
116 /* Looks like an IO address */
117 /* FIXME: What WIMG combinations could be sensible for IO?
118 * For now we allow WIMG=010x, but are there others? */
119 /* FIXME: Should we check against registered IO addresses? */
120 if ((ptel & (HPTE_R_W | HPTE_R_I | HPTE_R_M)) != HPTE_R_I) {
127 if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
130 if (likely((flags & H_EXACT) == 0)) {
132 hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
137 if ((ldq_p(hpte) & HPTE_V_VALID) == 0) {
140 hpte += HASH_PTE_SIZE_64;
144 hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
145 if (ldq_p(hpte) & HPTE_V_VALID) {
149 stq_p(hpte + (HASH_PTE_SIZE_64/2), ptel);
150 /* eieio(); FIXME: need some sort of barrier for smp? */
153 args[0] = pte_index + i;
159 REMOVE_NOT_FOUND = 1,
164 static target_ulong remove_hpte(CPUPPCState *env, target_ulong ptex,
167 target_ulong *vp, target_ulong *rp)
170 target_ulong v, r, rb;
172 if ((ptex * HASH_PTE_SIZE_64) & ~env->htab_mask) {
176 hpte = env->external_htab + (ptex * HASH_PTE_SIZE_64);
179 r = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
181 if ((v & HPTE_V_VALID) == 0 ||
182 ((flags & H_AVPN) && (v & ~0x7fULL) != avpn) ||
183 ((flags & H_ANDCOND) && (v & avpn) != 0)) {
184 return REMOVE_NOT_FOUND;
189 rb = compute_tlbie_rb(v, r, ptex);
190 ppc_tlb_invalidate_one(env, rb);
191 return REMOVE_SUCCESS;
194 static target_ulong h_remove(PowerPCCPU *cpu, sPAPREnvironment *spapr,
195 target_ulong opcode, target_ulong *args)
197 CPUPPCState *env = &cpu->env;
198 target_ulong flags = args[0];
199 target_ulong pte_index = args[1];
200 target_ulong avpn = args[2];
203 ret = remove_hpte(env, pte_index, avpn, flags,
210 case REMOVE_NOT_FOUND:
223 #define H_BULK_REMOVE_TYPE 0xc000000000000000ULL
224 #define H_BULK_REMOVE_REQUEST 0x4000000000000000ULL
225 #define H_BULK_REMOVE_RESPONSE 0x8000000000000000ULL
226 #define H_BULK_REMOVE_END 0xc000000000000000ULL
227 #define H_BULK_REMOVE_CODE 0x3000000000000000ULL
228 #define H_BULK_REMOVE_SUCCESS 0x0000000000000000ULL
229 #define H_BULK_REMOVE_NOT_FOUND 0x1000000000000000ULL
230 #define H_BULK_REMOVE_PARM 0x2000000000000000ULL
231 #define H_BULK_REMOVE_HW 0x3000000000000000ULL
232 #define H_BULK_REMOVE_RC 0x0c00000000000000ULL
233 #define H_BULK_REMOVE_FLAGS 0x0300000000000000ULL
234 #define H_BULK_REMOVE_ABSOLUTE 0x0000000000000000ULL
235 #define H_BULK_REMOVE_ANDCOND 0x0100000000000000ULL
236 #define H_BULK_REMOVE_AVPN 0x0200000000000000ULL
237 #define H_BULK_REMOVE_PTEX 0x00ffffffffffffffULL
239 #define H_BULK_REMOVE_MAX_BATCH 4
241 static target_ulong h_bulk_remove(PowerPCCPU *cpu, sPAPREnvironment *spapr,
242 target_ulong opcode, target_ulong *args)
244 CPUPPCState *env = &cpu->env;
247 for (i = 0; i < H_BULK_REMOVE_MAX_BATCH; i++) {
248 target_ulong *tsh = &args[i*2];
249 target_ulong tsl = args[i*2 + 1];
250 target_ulong v, r, ret;
252 if ((*tsh & H_BULK_REMOVE_TYPE) == H_BULK_REMOVE_END) {
254 } else if ((*tsh & H_BULK_REMOVE_TYPE) != H_BULK_REMOVE_REQUEST) {
258 *tsh &= H_BULK_REMOVE_PTEX | H_BULK_REMOVE_FLAGS;
259 *tsh |= H_BULK_REMOVE_RESPONSE;
261 if ((*tsh & H_BULK_REMOVE_ANDCOND) && (*tsh & H_BULK_REMOVE_AVPN)) {
262 *tsh |= H_BULK_REMOVE_PARM;
266 ret = remove_hpte(env, *tsh & H_BULK_REMOVE_PTEX, tsl,
267 (*tsh & H_BULK_REMOVE_FLAGS) >> 26,
274 *tsh |= (r & (HPTE_R_C | HPTE_R_R)) << 43;
288 static target_ulong h_protect(PowerPCCPU *cpu, sPAPREnvironment *spapr,
289 target_ulong opcode, target_ulong *args)
291 CPUPPCState *env = &cpu->env;
292 target_ulong flags = args[0];
293 target_ulong pte_index = args[1];
294 target_ulong avpn = args[2];
296 target_ulong v, r, rb;
298 if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
302 hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
305 r = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
307 if ((v & HPTE_V_VALID) == 0 ||
308 ((flags & H_AVPN) && (v & ~0x7fULL) != avpn)) {
312 r &= ~(HPTE_R_PP0 | HPTE_R_PP | HPTE_R_N |
313 HPTE_R_KEY_HI | HPTE_R_KEY_LO);
314 r |= (flags << 55) & HPTE_R_PP0;
315 r |= (flags << 48) & HPTE_R_KEY_HI;
316 r |= flags & (HPTE_R_PP | HPTE_R_N | HPTE_R_KEY_LO);
317 rb = compute_tlbie_rb(v, r, pte_index);
318 stq_p(hpte, v & ~HPTE_V_VALID);
319 ppc_tlb_invalidate_one(env, rb);
320 stq_p(hpte + (HASH_PTE_SIZE_64/2), r);
321 /* Don't need a memory barrier, due to qemu's global lock */
326 static target_ulong h_read(PowerPCCPU *cpu, sPAPREnvironment *spapr,
327 target_ulong opcode, target_ulong *args)
329 CPUPPCState *env = &cpu->env;
330 target_ulong flags = args[0];
331 target_ulong pte_index = args[1];
333 int i, ridx, n_entries = 1;
335 if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
339 if (flags & H_READ_4) {
340 /* Clear the two low order bits */
341 pte_index &= ~(3ULL);
345 hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
347 for (i = 0, ridx = 0; i < n_entries; i++) {
348 args[ridx++] = ldq_p(hpte);
349 args[ridx++] = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
350 hpte += HASH_PTE_SIZE_64;
356 static target_ulong h_set_dabr(PowerPCCPU *cpu, sPAPREnvironment *spapr,
357 target_ulong opcode, target_ulong *args)
359 /* FIXME: actually implement this */
363 #define FLAGS_REGISTER_VPA 0x0000200000000000ULL
364 #define FLAGS_REGISTER_DTL 0x0000400000000000ULL
365 #define FLAGS_REGISTER_SLBSHADOW 0x0000600000000000ULL
366 #define FLAGS_DEREGISTER_VPA 0x0000a00000000000ULL
367 #define FLAGS_DEREGISTER_DTL 0x0000c00000000000ULL
368 #define FLAGS_DEREGISTER_SLBSHADOW 0x0000e00000000000ULL
370 #define VPA_MIN_SIZE 640
371 #define VPA_SIZE_OFFSET 0x4
372 #define VPA_SHARED_PROC_OFFSET 0x9
373 #define VPA_SHARED_PROC_VAL 0x2
375 static target_ulong register_vpa(CPUPPCState *env, target_ulong vpa)
381 hcall_dprintf("Can't cope with registering a VPA at logical 0\n");
385 if (vpa % env->dcache_line_size) {
388 /* FIXME: bounds check the address */
390 size = lduw_be_phys(vpa + 0x4);
392 if (size < VPA_MIN_SIZE) {
396 /* VPA is not allowed to cross a page boundary */
397 if ((vpa / 4096) != ((vpa + size - 1) / 4096)) {
403 tmp = ldub_phys(env->vpa_addr + VPA_SHARED_PROC_OFFSET);
404 tmp |= VPA_SHARED_PROC_VAL;
405 stb_phys(env->vpa_addr + VPA_SHARED_PROC_OFFSET, tmp);
410 static target_ulong deregister_vpa(CPUPPCState *env, target_ulong vpa)
412 if (env->slb_shadow_addr) {
424 static target_ulong register_slb_shadow(CPUPPCState *env, target_ulong addr)
429 hcall_dprintf("Can't cope with SLB shadow at logical 0\n");
433 size = ldl_be_phys(addr + 0x4);
438 if ((addr / 4096) != ((addr + size - 1) / 4096)) {
442 if (!env->vpa_addr) {
446 env->slb_shadow_addr = addr;
447 env->slb_shadow_size = size;
452 static target_ulong deregister_slb_shadow(CPUPPCState *env, target_ulong addr)
454 env->slb_shadow_addr = 0;
455 env->slb_shadow_size = 0;
459 static target_ulong register_dtl(CPUPPCState *env, target_ulong addr)
464 hcall_dprintf("Can't cope with DTL at logical 0\n");
468 size = ldl_be_phys(addr + 0x4);
474 if (!env->vpa_addr) {
478 env->dtl_addr = addr;
479 env->dtl_size = size;
484 static target_ulong deregister_dtl(CPUPPCState *env, target_ulong addr)
492 static target_ulong h_register_vpa(PowerPCCPU *cpu, sPAPREnvironment *spapr,
493 target_ulong opcode, target_ulong *args)
495 target_ulong flags = args[0];
496 target_ulong procno = args[1];
497 target_ulong vpa = args[2];
498 target_ulong ret = H_PARAMETER;
502 tcpu = qemu_get_cpu(procno);
506 tenv = tcpu->env_ptr;
509 case FLAGS_REGISTER_VPA:
510 ret = register_vpa(tenv, vpa);
513 case FLAGS_DEREGISTER_VPA:
514 ret = deregister_vpa(tenv, vpa);
517 case FLAGS_REGISTER_SLBSHADOW:
518 ret = register_slb_shadow(tenv, vpa);
521 case FLAGS_DEREGISTER_SLBSHADOW:
522 ret = deregister_slb_shadow(tenv, vpa);
525 case FLAGS_REGISTER_DTL:
526 ret = register_dtl(tenv, vpa);
529 case FLAGS_DEREGISTER_DTL:
530 ret = deregister_dtl(tenv, vpa);
537 static target_ulong h_cede(PowerPCCPU *cpu, sPAPREnvironment *spapr,
538 target_ulong opcode, target_ulong *args)
540 CPUPPCState *env = &cpu->env;
541 CPUState *cs = CPU(cpu);
543 env->msr |= (1ULL << MSR_EE);
544 hreg_compute_hflags(env);
545 if (!cpu_has_work(cs)) {
547 env->exception_index = EXCP_HLT;
548 cs->exit_request = 1;
553 static target_ulong h_rtas(PowerPCCPU *cpu, sPAPREnvironment *spapr,
554 target_ulong opcode, target_ulong *args)
556 target_ulong rtas_r3 = args[0];
557 uint32_t token = ldl_be_phys(rtas_r3);
558 uint32_t nargs = ldl_be_phys(rtas_r3 + 4);
559 uint32_t nret = ldl_be_phys(rtas_r3 + 8);
561 return spapr_rtas_call(spapr, token, nargs, rtas_r3 + 12,
562 nret, rtas_r3 + 12 + 4*nargs);
565 static target_ulong h_logical_load(PowerPCCPU *cpu, sPAPREnvironment *spapr,
566 target_ulong opcode, target_ulong *args)
568 target_ulong size = args[0];
569 target_ulong addr = args[1];
573 args[0] = ldub_phys(addr);
576 args[0] = lduw_phys(addr);
579 args[0] = ldl_phys(addr);
582 args[0] = ldq_phys(addr);
588 static target_ulong h_logical_store(PowerPCCPU *cpu, sPAPREnvironment *spapr,
589 target_ulong opcode, target_ulong *args)
591 target_ulong size = args[0];
592 target_ulong addr = args[1];
593 target_ulong val = args[2];
612 static target_ulong h_logical_memop(PowerPCCPU *cpu, sPAPREnvironment *spapr,
613 target_ulong opcode, target_ulong *args)
615 target_ulong dst = args[0]; /* Destination address */
616 target_ulong src = args[1]; /* Source address */
617 target_ulong esize = args[2]; /* Element size (0=1,1=2,2=4,3=8) */
618 target_ulong count = args[3]; /* Element count */
619 target_ulong op = args[4]; /* 0 = copy, 1 = invert */
621 unsigned int mask = (1 << esize) - 1;
622 int step = 1 << esize;
624 if (count > 0x80000000) {
628 if ((dst & mask) || (src & mask) || (op > 1)) {
632 if (dst >= src && dst < (src + (count << esize))) {
633 dst = dst + ((count - 1) << esize);
634 src = src + ((count - 1) << esize);
641 tmp = ldub_phys(src);
644 tmp = lduw_phys(src);
679 static target_ulong h_logical_icbi(PowerPCCPU *cpu, sPAPREnvironment *spapr,
680 target_ulong opcode, target_ulong *args)
682 /* Nothing to do on emulation, KVM will trap this in the kernel */
686 static target_ulong h_logical_dcbf(PowerPCCPU *cpu, sPAPREnvironment *spapr,
687 target_ulong opcode, target_ulong *args)
689 /* Nothing to do on emulation, KVM will trap this in the kernel */
693 static spapr_hcall_fn papr_hypercall_table[(MAX_HCALL_OPCODE / 4) + 1];
694 static spapr_hcall_fn kvmppc_hypercall_table[KVMPPC_HCALL_MAX - KVMPPC_HCALL_BASE + 1];
696 void spapr_register_hypercall(target_ulong opcode, spapr_hcall_fn fn)
698 spapr_hcall_fn *slot;
700 if (opcode <= MAX_HCALL_OPCODE) {
701 assert((opcode & 0x3) == 0);
703 slot = &papr_hypercall_table[opcode / 4];
705 assert((opcode >= KVMPPC_HCALL_BASE) && (opcode <= KVMPPC_HCALL_MAX));
707 slot = &kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE];
714 target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode,
717 if ((opcode <= MAX_HCALL_OPCODE)
718 && ((opcode & 0x3) == 0)) {
719 spapr_hcall_fn fn = papr_hypercall_table[opcode / 4];
722 return fn(cpu, spapr, opcode, args);
724 } else if ((opcode >= KVMPPC_HCALL_BASE) &&
725 (opcode <= KVMPPC_HCALL_MAX)) {
726 spapr_hcall_fn fn = kvmppc_hypercall_table[opcode - KVMPPC_HCALL_BASE];
729 return fn(cpu, spapr, opcode, args);
733 hcall_dprintf("Unimplemented hcall 0x" TARGET_FMT_lx "\n", opcode);
737 static void hypercall_register_types(void)
740 spapr_register_hypercall(H_ENTER, h_enter);
741 spapr_register_hypercall(H_REMOVE, h_remove);
742 spapr_register_hypercall(H_PROTECT, h_protect);
743 spapr_register_hypercall(H_READ, h_read);
746 spapr_register_hypercall(H_BULK_REMOVE, h_bulk_remove);
749 spapr_register_hypercall(H_SET_DABR, h_set_dabr);
752 spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa);
753 spapr_register_hypercall(H_CEDE, h_cede);
755 /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenciate
756 * here between the "CI" and the "CACHE" variants, they will use whatever
757 * mapping attributes qemu is using. When using KVM, the kernel will
758 * enforce the attributes more strongly
760 spapr_register_hypercall(H_LOGICAL_CI_LOAD, h_logical_load);
761 spapr_register_hypercall(H_LOGICAL_CI_STORE, h_logical_store);
762 spapr_register_hypercall(H_LOGICAL_CACHE_LOAD, h_logical_load);
763 spapr_register_hypercall(H_LOGICAL_CACHE_STORE, h_logical_store);
764 spapr_register_hypercall(H_LOGICAL_ICBI, h_logical_icbi);
765 spapr_register_hypercall(H_LOGICAL_DCBF, h_logical_dcbf);
766 spapr_register_hypercall(KVMPPC_H_LOGICAL_MEMOP, h_logical_memop);
768 /* qemu/KVM-PPC specific hcalls */
769 spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas);
772 type_init(hypercall_register_types)