-static inline hwaddr get_pteg_offset(CPUPPCState *env,
- hwaddr hash,
- int pte_size)
-{
- return (hash * pte_size * 8) & env->htab_mask;
-}
-
-/* PTE table lookup */
-static inline int find_pte2(CPUPPCState *env, mmu_ctx_t *ctx, int is_64b, int h,
- int rw, int type, int target_page_bits)
-{
- hwaddr pteg_off;
- target_ulong pte0, pte1;
- int i, good = -1;
- int ret, r;
-
- ret = -1; /* No entry found */
- pteg_off = get_pteg_offset(env, ctx->hash[h],
- is_64b ? HASH_PTE_SIZE_64 : HASH_PTE_SIZE_32);
- for (i = 0; i < 8; i++) {
-#if defined(TARGET_PPC64)
- if (is_64b) {
- if (env->external_htab) {
- pte0 = ldq_p(env->external_htab + pteg_off + (i * 16));
- pte1 = ldq_p(env->external_htab + pteg_off + (i * 16) + 8);
- } else {
- pte0 = ldq_phys(env->htab_base + pteg_off + (i * 16));
- pte1 = ldq_phys(env->htab_base + pteg_off + (i * 16) + 8);
- }
-
- r = pte64_check(ctx, pte0, pte1, h, rw, type);
- LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
- TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
- pteg_off + (i * 16), pte0, pte1, (int)(pte0 & 1), h,
- (int)((pte0 >> 1) & 1), ctx->ptem);
- } else
-#endif
- {
- if (env->external_htab) {
- pte0 = ldl_p(env->external_htab + pteg_off + (i * 8));
- pte1 = ldl_p(env->external_htab + pteg_off + (i * 8) + 4);
- } else {
- pte0 = ldl_phys(env->htab_base + pteg_off + (i * 8));
- pte1 = ldl_phys(env->htab_base + pteg_off + (i * 8) + 4);
- }
- r = pte32_check(ctx, pte0, pte1, h, rw, type);
- LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
- TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
- pteg_off + (i * 8), pte0, pte1, (int)(pte0 >> 31), h,
- (int)((pte0 >> 6) & 1), ctx->ptem);
- }
- switch (r) {
- case -3:
- /* PTE inconsistency */
- return -1;
- case -2:
- /* Access violation */
- ret = -2;
- good = i;
- break;
- case -1:
- default:
- /* No PTE match */
- break;
- case 0:
- /* access granted */
- /* XXX: we should go on looping to check all PTEs consistency
- * but if we can speed-up the whole thing as the
- * result would be undefined if PTEs are not consistent.
- */
- ret = 0;
- good = i;
- goto done;
- }
- }
- if (good != -1) {
- done:
- LOG_MMU("found PTE at addr " TARGET_FMT_lx " prot=%01x ret=%d\n",
- ctx->raddr, ctx->prot, ret);
- /* Update page flags */
- pte1 = ctx->raddr;
- if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
-#if defined(TARGET_PPC64)
- if (is_64b) {
- if (env->external_htab) {
- stq_p(env->external_htab + pteg_off + (good * 16) + 8,
- pte1);
- } else {
- stq_phys_notdirty(env->htab_base + pteg_off +
- (good * 16) + 8, pte1);
- }
- } else
-#endif
- {
- if (env->external_htab) {
- stl_p(env->external_htab + pteg_off + (good * 8) + 4,
- pte1);
- } else {
- stl_phys_notdirty(env->htab_base + pteg_off +
- (good * 8) + 4, pte1);
- }
- }
- }
- }
-
- /* We have a TLB that saves 4K pages, so let's
- * split a huge page to 4k chunks */
- if (target_page_bits != TARGET_PAGE_BITS) {
- ctx->raddr |= (ctx->eaddr & ((1 << target_page_bits) - 1))
- & TARGET_PAGE_MASK;
- }
- return ret;
-}
-
-static inline int find_pte(CPUPPCState *env, mmu_ctx_t *ctx, int h, int rw,
- int type, int target_page_bits)
-{
-#if defined(TARGET_PPC64)
- if (env->mmu_model & POWERPC_MMU_64) {
- return find_pte2(env, ctx, 1, h, rw, type, target_page_bits);
- }
-#endif
-
- return find_pte2(env, ctx, 0, h, rw, type, target_page_bits);
-}
-
-#if defined(TARGET_PPC64)
-static inline ppc_slb_t *slb_lookup(CPUPPCState *env, target_ulong eaddr)
-{
- uint64_t esid_256M, esid_1T;
- int n;
-
- LOG_SLB("%s: eaddr " TARGET_FMT_lx "\n", __func__, eaddr);
-
- esid_256M = (eaddr & SEGMENT_MASK_256M) | SLB_ESID_V;
- esid_1T = (eaddr & SEGMENT_MASK_1T) | SLB_ESID_V;
-
- for (n = 0; n < env->slb_nr; n++) {
- ppc_slb_t *slb = &env->slb[n];
-
- LOG_SLB("%s: slot %d %016" PRIx64 " %016"
- PRIx64 "\n", __func__, n, slb->esid, slb->vsid);
- /* We check for 1T matches on all MMUs here - if the MMU
- * doesn't have 1T segment support, we will have prevented 1T
- * entries from being inserted in the slbmte code. */
- if (((slb->esid == esid_256M) &&
- ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_256M))
- || ((slb->esid == esid_1T) &&
- ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_1T))) {
- return slb;
- }
- }
-
- return NULL;
-}
-
-/*****************************************************************************/
-/* SPR accesses */
-
-void helper_slbia(CPUPPCState *env)
-{
- int n, do_invalidate;
-
- do_invalidate = 0;
- /* XXX: Warning: slbia never invalidates the first segment */
- for (n = 1; n < env->slb_nr; n++) {
- ppc_slb_t *slb = &env->slb[n];
-
- if (slb->esid & SLB_ESID_V) {
- slb->esid &= ~SLB_ESID_V;
- /* XXX: given the fact that segment size is 256 MB or 1TB,
- * and we still don't have a tlb_flush_mask(env, n, mask)
- * in QEMU, we just invalidate all TLBs
- */
- do_invalidate = 1;
- }
- }
- if (do_invalidate) {
- tlb_flush(env, 1);
- }
-}
-
-void helper_slbie(CPUPPCState *env, target_ulong addr)
-{
- ppc_slb_t *slb;
-
- slb = slb_lookup(env, addr);
- if (!slb) {
- return;
- }
-
- if (slb->esid & SLB_ESID_V) {
- slb->esid &= ~SLB_ESID_V;
-
- /* XXX: given the fact that segment size is 256 MB or 1TB,
- * and we still don't have a tlb_flush_mask(env, n, mask)
- * in QEMU, we just invalidate all TLBs
- */
- tlb_flush(env, 1);
- }
-}
-
-int ppc_store_slb(CPUPPCState *env, target_ulong rb, target_ulong rs)
-{
- int slot = rb & 0xfff;
- ppc_slb_t *slb = &env->slb[slot];
-
- if (rb & (0x1000 - env->slb_nr)) {
- return -1; /* Reserved bits set or slot too high */
- }
- if (rs & (SLB_VSID_B & ~SLB_VSID_B_1T)) {
- return -1; /* Bad segment size */
- }
- if ((rs & SLB_VSID_B) && !(env->mmu_model & POWERPC_MMU_1TSEG)) {
- return -1; /* 1T segment on MMU that doesn't support it */
- }
-
- /* Mask out the slot number as we store the entry */
- slb->esid = rb & (SLB_ESID_ESID | SLB_ESID_V);
- slb->vsid = rs;
-
- LOG_SLB("%s: %d " TARGET_FMT_lx " - " TARGET_FMT_lx " => %016" PRIx64
- " %016" PRIx64 "\n", __func__, slot, rb, rs,
- slb->esid, slb->vsid);
-
- return 0;
-}
-
-static int ppc_load_slb_esid(CPUPPCState *env, target_ulong rb,
- target_ulong *rt)
-{
- int slot = rb & 0xfff;
- ppc_slb_t *slb = &env->slb[slot];
-
- if (slot >= env->slb_nr) {
- return -1;
- }
-
- *rt = slb->esid;
- return 0;
-}
-
-static int ppc_load_slb_vsid(CPUPPCState *env, target_ulong rb,
- target_ulong *rt)
-{
- int slot = rb & 0xfff;
- ppc_slb_t *slb = &env->slb[slot];
-
- if (slot >= env->slb_nr) {
- return -1;
- }
-
- *rt = slb->vsid;
- return 0;
-}
-#endif /* defined(TARGET_PPC64) */
-
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