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Tue, 18 May 2021 13:12:08 -0700 (PDT) Received: from localhost.localdomain ([45.235.253.15]) by smtp.gmail.com with ESMTPSA id u27sm3953204oof.38.2021.05.18.13.12.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 May 2021 13:12:07 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 20/24] target/ppc: Split out ppc_hash64_xlate Date: Tue, 18 May 2021 15:11:42 -0500 Message-Id: <20210518201146.794854-21-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210518201146.794854-1-richard.henderson@linaro.org> References: <20210518201146.794854-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::336; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x336.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bruno.larsen@eldorado.org.br, qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Mirror the interface of ppc_radix64_xlate, putting all of the logic for hash64 translation into a single function. Signed-off-by: Richard Henderson --- target/ppc/mmu-hash64.c | 125 +++++++++++++++++++--------------------- 1 file changed, 59 insertions(+), 66 deletions(-) diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c index 877a01a296..3024dd1e8c 100644 --- a/target/ppc/mmu-hash64.c +++ b/target/ppc/mmu-hash64.c @@ -866,8 +866,10 @@ static int build_vrma_slbe(PowerPCCPU *cpu, ppc_slb_t *slb) return -1; } -int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, - MMUAccessType access_type, int mmu_idx) +static bool ppc_hash64_xlate(PowerPCCPU *cpu, vaddr eaddr, + MMUAccessType access_type, + hwaddr *raddrp, int *psizep, int *protp, + bool guest_visible) { CPUState *cs = CPU(cpu); CPUPPCState *env = &cpu->env; @@ -911,9 +913,11 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, slb = &vrma_slbe; if (build_vrma_slbe(cpu, slb) != 0) { /* Invalid VRMA setup, machine check */ - cs->exception_index = POWERPC_EXCP_MCHECK; - env->error_code = 0; - return 1; + if (guest_visible) { + cs->exception_index = POWERPC_EXCP_MCHECK; + env->error_code = 0; + } + return false; } goto skip_slb_search; @@ -922,6 +926,9 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, /* Emulated old-style RMO mode, bounds check against RMLS */ if (raddr >= limit) { + if (!guest_visible) { + return false; + } switch (access_type) { case MMU_INST_FETCH: ppc_hash64_set_isi(cs, SRR1_PROTFAULT); @@ -936,15 +943,16 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, default: g_assert_not_reached(); } - return 1; + return false; } raddr |= env->spr[SPR_RMOR]; } - tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK, - PAGE_READ | PAGE_WRITE | PAGE_EXEC, mmu_idx, - TARGET_PAGE_SIZE); - return 0; + + *raddrp = raddr; + *protp = PAGE_READ | PAGE_WRITE | PAGE_EXEC; + *psizep = TARGET_PAGE_BITS; + return true; } /* 2. Translation is on, so look up the SLB */ @@ -957,6 +965,9 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, exit(1); } /* Segment still not found, generate the appropriate interrupt */ + if (!guest_visible) { + return false; + } switch (access_type) { case MMU_INST_FETCH: cs->exception_index = POWERPC_EXCP_ISEG; @@ -971,20 +982,25 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, default: g_assert_not_reached(); } - return 1; + return false; } -skip_slb_search: + skip_slb_search: /* 3. Check for segment level no-execute violation */ if (access_type == MMU_INST_FETCH && (slb->vsid & SLB_VSID_N)) { - ppc_hash64_set_isi(cs, SRR1_NOEXEC_GUARD); - return 1; + if (guest_visible) { + ppc_hash64_set_isi(cs, SRR1_NOEXEC_GUARD); + } + return false; } /* 4. Locate the PTE in the hash table */ ptex = ppc_hash64_htab_lookup(cpu, slb, eaddr, &pte, &apshift); if (ptex == -1) { + if (!guest_visible) { + return false; + } switch (access_type) { case MMU_INST_FETCH: ppc_hash64_set_isi(cs, SRR1_NOPTE); @@ -998,7 +1014,7 @@ skip_slb_search: default: g_assert_not_reached(); } - return 1; + return false; } qemu_log_mask(CPU_LOG_MMU, "found PTE at index %08" HWADDR_PRIx "\n", ptex); @@ -1014,6 +1030,9 @@ skip_slb_search: if (need_prot & ~prot) { /* Access right violation */ qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); + if (!guest_visible) { + return false; + } if (access_type == MMU_INST_FETCH) { int srr1 = 0; if (PAGE_EXEC & ~exec_prot) { @@ -1038,7 +1057,7 @@ skip_slb_search: } ppc_hash64_set_dsi(cs, eaddr, dsisr); } - return 1; + return false; } qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); @@ -1062,66 +1081,40 @@ skip_slb_search: /* 7. Determine the real address from the PTE */ - raddr = deposit64(pte.pte1 & HPTE64_R_RPN, 0, apshift, eaddr); + *raddrp = deposit64(pte.pte1 & HPTE64_R_RPN, 0, apshift, eaddr); + *protp = prot; + *psizep = apshift; + return true; +} + +int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, + MMUAccessType access_type, int mmu_idx) +{ + CPUState *cs = CPU(cpu); + int page_size, prot; + hwaddr raddr; + + if (!ppc_hash64_xlate(cpu, eaddr, access_type, &raddr, + &page_size, &prot, true)) { + return 1; + } tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK, - prot, mmu_idx, 1ULL << apshift); - + prot, mmu_idx, 1UL << page_size); return 0; } -hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr) +hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong eaddr) { - CPUPPCState *env = &cpu->env; - ppc_slb_t vrma_slbe; - ppc_slb_t *slb; - hwaddr ptex, raddr; - ppc_hash_pte64_t pte; - unsigned apshift; + int psize, prot; + hwaddr raddr; - /* Handle real mode */ - if (msr_dr == 0) { - /* In real mode the top 4 effective address bits are ignored */ - raddr = addr & 0x0FFFFFFFFFFFFFFFULL; - - if (cpu->vhyp) { - /* - * In virtual hypervisor mode, there's nothing to do: - * EA == GPA == qemu guest address - */ - return raddr; - } else if ((msr_hv || !env->has_hv_mode) && !(addr >> 63)) { - /* In HV mode, add HRMOR if top EA bit is clear */ - return raddr | env->spr[SPR_HRMOR]; - } else if (ppc_hash64_use_vrma(env)) { - /* Emulated VRMA mode */ - slb = &vrma_slbe; - if (build_vrma_slbe(cpu, slb) != 0) { - return -1; - } - } else { - target_ulong limit = rmls_limit(cpu); - - /* Emulated old-style RMO mode, bounds check against RMLS */ - if (raddr >= limit) { - return -1; - } - return raddr | env->spr[SPR_RMOR]; - } - } else { - slb = slb_lookup(cpu, addr); - if (!slb) { - return -1; - } - } - - ptex = ppc_hash64_htab_lookup(cpu, slb, addr, &pte, &apshift); - if (ptex == -1) { + if (!ppc_hash64_xlate(cpu, eaddr, MMU_DATA_LOAD, &raddr, + &psize, &prot, false)) { return -1; } - return deposit64(pte.pte1 & HPTE64_R_RPN, 0, apshift, addr) - & TARGET_PAGE_MASK; + return raddr & TARGET_PAGE_MASK; } void ppc_hash64_tlb_flush_hpte(PowerPCCPU *cpu, target_ulong ptex, -- 2.25.1