From patchwork Wed Jun 2 19:26:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Mateus Martins Araujo e Castro X-Patchwork-Id: 12295601 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13448C47083 for ; Wed, 2 Jun 2021 19:28:59 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C69A8613E9 for ; Wed, 2 Jun 2021 19:28:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C69A8613E9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=eldorado.org.br Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59980 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWXx-0007fn-TF for qemu-devel@archiver.kernel.org; Wed, 02 Jun 2021 15:28:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38208) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loWW8-0004tk-Sf; Wed, 02 Jun 2021 15:27:06 -0400 Received: from [201.28.113.2] (port=39068 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWW6-0002aI-Vn; Wed, 02 Jun 2021 15:27:04 -0400 Received: from power9a ([10.10.71.235]) by outlook.eldorado.org.br with Microsoft SMTPSVC(8.5.9600.16384); Wed, 2 Jun 2021 16:26:25 -0300 Received: from eldorado.org.br (unknown [10.10.71.235]) by power9a (Postfix) with ESMTP id 3BC7A80148C; Wed, 2 Jun 2021 16:26:25 -0300 (-03) From: "Lucas Mateus Castro (alqotel)" To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [RFC PATCH 1/4] target/ppc: Don't compile ppc_tlb_invalid_all without TCG Date: Wed, 2 Jun 2021 16:26:01 -0300 Message-Id: <20210602192604.90846-2-lucas.araujo@eldorado.org.br> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> References: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> X-OriginalArrivalTime: 02 Jun 2021 19:26:25.0381 (UTC) FILETIME=[2D892950:01D757E5] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass client-ip=201.28.113.2; envelope-from=lucas.araujo@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: "Lucas Mateus Castro \(alqotel\)" , luis.pires@eldorado.org.br, fernando.valle@eldorado.org.br, matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The function ppc_tlb_invalid_all is not compiled anymore in a TCG-less environment, and the call to that function has been disabled in this situation. Signed-off-by: Lucas Mateus Castro (alqotel) --- Is there a better way than to deal with the ppc_tlb_invalidate_all call than ifdef? I couldn't think of one. --- target/ppc/cpu_init.c | 4 ++++ target/ppc/mmu_helper.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 74a397ad6c..2051f24467 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -9114,7 +9114,11 @@ static void ppc_cpu_reset(DeviceState *dev) #if !defined(CONFIG_USER_ONLY) env->nip = env->hreset_vector | env->excp_prefix; if (env->mmu_model != POWERPC_MMU_REAL) { +#if defined(CONFIG_TCG) ppc_tlb_invalidate_all(env); +#else + cpu_abort(env_cpu(env),"PowerPC not in real mode, invalid in this build\n"); +#endif } #endif diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c index 1ecb36e85a..803b66f2b0 100644 --- a/target/ppc/mmu_helper.c +++ b/target/ppc/mmu_helper.c @@ -825,6 +825,7 @@ static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, return ret; } +#ifdef CONFIG_TCG static void booke206_flush_tlb(CPUPPCState *env, int flags, const int check_iprot) { @@ -846,6 +847,7 @@ static void booke206_flush_tlb(CPUPPCState *env, int flags, tlb_flush(env_cpu(env)); } +#endif static hwaddr booke206_tlb_to_page_size(CPUPPCState *env, ppcmas_tlb_t *tlb) @@ -1952,6 +1954,7 @@ void helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value) } #endif +#ifdef CONFIG_TCG /*****************************************************************************/ /* TLB management */ void ppc_tlb_invalidate_all(CPUPPCState *env) @@ -1995,6 +1998,7 @@ void ppc_tlb_invalidate_all(CPUPPCState *env) break; } } +#endif #ifdef CONFIG_TCG void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) From patchwork Wed Jun 2 19:26:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Mateus Martins Araujo e Castro X-Patchwork-Id: 12295613 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C1FDC47083 for ; Wed, 2 Jun 2021 19:32:05 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 80B2160FEE for ; Wed, 2 Jun 2021 19:32:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 80B2160FEE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=eldorado.org.br Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35974 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWax-00029p-Cw for qemu-devel@archiver.kernel.org; Wed, 02 Jun 2021 15:32:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38220) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loWWE-0004ux-Tg; Wed, 02 Jun 2021 15:27:12 -0400 Received: from [201.28.113.2] (port=39068 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWWA-0002aI-Aq; Wed, 02 Jun 2021 15:27:10 -0400 Received: from power9a ([10.10.71.235]) by outlook.eldorado.org.br with Microsoft SMTPSVC(8.5.9600.16384); Wed, 2 Jun 2021 16:26:27 -0300 Received: from eldorado.org.br (unknown [10.10.71.235]) by power9a (Postfix) with ESMTP id 8556080148C; Wed, 2 Jun 2021 16:26:27 -0300 (-03) From: "Lucas Mateus Castro (alqotel)" To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [RFC PATCH 2/4] target/ppc: divided mmu_helper.c in 2 files Date: Wed, 2 Jun 2021 16:26:02 -0300 Message-Id: <20210602192604.90846-3-lucas.araujo@eldorado.org.br> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> References: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> X-OriginalArrivalTime: 02 Jun 2021 19:26:27.0727 (UTC) FILETIME=[2EEF21F0:01D757E5] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass client-ip=201.28.113.2; envelope-from=lucas.araujo@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: "Lucas Mateus Castro \(alqotel\)" , luis.pires@eldorado.org.br, fernando.valle@eldorado.org.br, matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Moved functions in mmu_helper.c that should be compiled in build to mmu_common.c, moved declaration of functions that both files use to cpu.h and moved struct declarations and inline functions needed by both to target/ppc/internal.h. Updated meson.build to compile the new file. Signed-off-by: Lucas Mateus Castro (alqotel) --- Had to turn a few functions non static as it was used by both mmu_common.c and mmu_helper.c. Added the declaration of mmu_ctx_t to cpu.h so functions there can reference it and added the definition to internal.h so functions in both mmu_* files can access it. And maybe the tlb functions should be declared in internal.h instead of cpu.h. --- target/ppc/cpu.h | 35 + target/ppc/internal.h | 26 + target/ppc/meson.build | 6 +- target/ppc/mmu_common.c | 1606 ++++++++++++++++++++++++++++++++++ target/ppc/mmu_helper.c | 1814 +++------------------------------------ 5 files changed, 1774 insertions(+), 1713 deletions(-) create mode 100644 target/ppc/mmu_common.c diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h index b0934d9be4..cfc35ef83e 100644 --- a/target/ppc/cpu.h +++ b/target/ppc/cpu.h @@ -1329,6 +1329,41 @@ void store_booke_tsr(CPUPPCState *env, target_ulong val); void ppc_tlb_invalidate_all(CPUPPCState *env); void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr); void cpu_ppc_set_vhyp(PowerPCCPU *cpu, PPCVirtualHypervisor *vhyp); + +typedef struct mmu_ctx_t mmu_ctx_t; +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, + hwaddr *raddrp, + target_ulong address, uint32_t pid, int ext, + int i); +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, + MMUAccessType access_type, int type, + int mmu_idx); +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, + ppcmas_tlb_t *tlb); +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, + hwaddr *raddrp, target_ulong address, + uint32_t pid); +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type, + int type); +static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, + int way, int is_code) +{ + int nr; + + /* Select TLB num in a way from address */ + nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); + /* Select TLB way */ + nr += env->tlb_per_way * way; + /* 6xx have separate TLBs for instructions and data */ + if (is_code && env->id_tlbs == 1) { + nr += env->nb_tlb; + } + + return nr; +} + #endif #endif diff --git a/target/ppc/internal.h b/target/ppc/internal.h index 2b4b06eb76..7d2913ec28 100644 --- a/target/ppc/internal.h +++ b/target/ppc/internal.h @@ -247,4 +247,30 @@ static inline int prot_for_access_type(MMUAccessType access_type) g_assert_not_reached(); } +/* Context used internally during MMU translations */ + +struct mmu_ctx_t { + hwaddr raddr; /* Real address */ + hwaddr eaddr; /* Effective address */ + int prot; /* Protection bits */ + hwaddr hash[2]; /* Pagetable hash values */ + target_ulong ptem; /* Virtual segment ID | API */ + int key; /* Access key */ + int nx; /* Non-execute area */ +}; + +/* Common routines used by software and hardware TLBs emulation */ +static inline int pte_is_valid(target_ulong pte0) +{ + return pte0 & 0x80000000 ? 1 : 0; +} + +static inline void pte_invalidate(target_ulong *pte0) +{ + *pte0 &= ~0x80000000; +} + +#define PTE_PTEM_MASK 0x7FFFFFBF +#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) + #endif /* PPC_INTERNAL_H */ diff --git a/target/ppc/meson.build b/target/ppc/meson.build index a6a53a8d5c..a54445d0da 100644 --- a/target/ppc/meson.build +++ b/target/ppc/meson.build @@ -28,10 +28,12 @@ ppc_softmmu_ss.add(files( 'arch_dump.c', 'machine.c', 'mmu-hash32.c', - 'mmu_helper.c', + 'mmu_common.c', 'monitor.c', )) -ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_false: files( +ppc_softmmu_ss.add(when: 'CONFIG_TCG', if_true: files( + 'mmu_helper.c', +), if_false: files( 'tcg-stub.c' )) diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c new file mode 100644 index 0000000000..d95399d67f --- /dev/null +++ b/target/ppc/mmu_common.c @@ -0,0 +1,1606 @@ +/* + * PowerPC CPU initialization for qemu. + * + * Copyright (C) 2021 Instituto de Pesquisas Eldorado (eldorado.org.br) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#include "qemu/osdep.h" +#include "qemu/units.h" +#include "cpu.h" +#include "sysemu/kvm.h" +#include "kvm_ppc.h" +#include "mmu-hash64.h" +#include "mmu-hash32.h" +#include "exec/exec-all.h" +#include "exec/log.h" +#include "helper_regs.h" +#include "qemu/error-report.h" +#include "qemu/main-loop.h" +#include "qemu/qemu-print.h" +#include "internal.h" +#include "mmu-book3s-v3.h" +#include "mmu-radix64.h" + +/* #define DEBUG_MMU */ +/* #define DEBUG_BATS */ +/* #define DEBUG_SOFTWARE_TLB */ +/* #define DUMP_PAGE_TABLES */ +/* #define FLUSH_ALL_TLBS */ + +#ifdef DEBUG_MMU +# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) +#else +# define LOG_MMU_STATE(cpu) do { } while (0) +#endif + +#ifdef DEBUG_SOFTWARE_TLB +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_SWTLB(...) do { } while (0) +#endif + +#ifdef DEBUG_BATS +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_BATS(...) do { } while (0) +#endif + +/*****************************************************************************/ +/* PowerPC MMU emulation */ + +static int pp_check(int key, int pp, int nx) +{ + int access; + + /* Compute access rights */ + access = 0; + if (key == 0) { + switch (pp) { + case 0x0: + case 0x1: + case 0x2: + access |= PAGE_WRITE; + /* fall through */ + case 0x3: + access |= PAGE_READ; + break; + } + } else { + switch (pp) { + case 0x0: + access = 0; + break; + case 0x1: + case 0x3: + access = PAGE_READ; + break; + case 0x2: + access = PAGE_READ | PAGE_WRITE; + break; + } + } + if (nx == 0) { + access |= PAGE_EXEC; + } + + return access; +} + +static int check_prot(int prot, MMUAccessType access_type) +{ + return prot & prot_for_access_type(access_type) ? 0 : -2; +} + +static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, + int ret, MMUAccessType access_type) +{ + int store = 0; + + /* Update page flags */ + if (!(*pte1p & 0x00000100)) { + /* Update accessed flag */ + *pte1p |= 0x00000100; + store = 1; + } + if (!(*pte1p & 0x00000080)) { + if (access_type == MMU_DATA_STORE && ret == 0) { + /* Update changed flag */ + *pte1p |= 0x00000080; + store = 1; + } else { + /* Force page fault for first write access */ + ctx->prot &= ~PAGE_WRITE; + } + } + + return store; +} + +static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, + target_ulong pte1, int h, + MMUAccessType access_type) +{ + target_ulong ptem, mmask; + int access, ret, pteh, ptev, pp; + + ret = -1; + /* Check validity and table match */ + ptev = pte_is_valid(pte0); + pteh = (pte0 >> 6) & 1; + if (ptev && h == pteh) { + /* Check vsid & api */ + ptem = pte0 & PTE_PTEM_MASK; + mmask = PTE_CHECK_MASK; + pp = pte1 & 0x00000003; + if (ptem == ctx->ptem) { + if (ctx->raddr != (hwaddr)-1ULL) { + /* all matches should have equal RPN, WIMG & PP */ + if ((ctx->raddr & mmask) != (pte1 & mmask)) { + qemu_log_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); + return -3; + } + } + /* Compute access rights */ + access = pp_check(ctx->key, pp, ctx->nx); + /* Keep the matching PTE information */ + ctx->raddr = pte1; + ctx->prot = access; + ret = check_prot(ctx->prot, access_type); + if (ret == 0) { + /* Access granted */ + qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); + } else { + /* Access right violation */ + qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); + } + } + } + + return ret; +} + +static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type) +{ + ppc6xx_tlb_t *tlb; + int nr, best, way; + int ret; + + best = -1; + ret = -1; /* No TLB found */ + for (way = 0; way < env->nb_ways; way++) { + nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); + tlb = &env->tlb.tlb6[nr]; + /* This test "emulates" the PTE index match for hardware TLBs */ + if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { + LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx + "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, + pte_is_valid(tlb->pte0) ? "valid" : "inval", + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); + continue; + } + LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " + TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, + pte_is_valid(tlb->pte0) ? "valid" : "inval", + tlb->EPN, eaddr, tlb->pte1, + access_type == MMU_DATA_STORE ? 'S' : 'L', + access_type == MMU_INST_FETCH ? 'I' : 'D'); + switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, + 0, access_type)) { + case -3: + /* TLB inconsistency */ + return -1; + case -2: + /* Access violation */ + ret = -2; + best = nr; + break; + case -1: + default: + /* No match */ + break; + case 0: + /* access granted */ + /* + * XXX: we should go on looping to check all TLBs + * consistency but we can speed-up the whole thing as + * the result would be undefined if TLBs are not + * consistent. + */ + ret = 0; + best = nr; + goto done; + } + } + if (best != -1) { + done: + LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", + ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); + /* Update page flags */ + pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); + } + + return ret; +} + +/* Perform BAT hit & translation */ +static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, + int *validp, int *protp, target_ulong *BATu, + target_ulong *BATl) +{ + target_ulong bl; + int pp, valid, prot; + + bl = (*BATu & 0x00001FFC) << 15; + valid = 0; + prot = 0; + if (((msr_pr == 0) && (*BATu & 0x00000002)) || + ((msr_pr != 0) && (*BATu & 0x00000001))) { + valid = 1; + pp = *BATl & 0x00000003; + if (pp != 0) { + prot = PAGE_READ | PAGE_EXEC; + if (pp == 0x2) { + prot |= PAGE_WRITE; + } + } + } + *blp = bl; + *validp = valid; + *protp = prot; +} + +static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong virtual, MMUAccessType access_type) +{ + target_ulong *BATlt, *BATut, *BATu, *BATl; + target_ulong BEPIl, BEPIu, bl; + int i, valid, prot; + int ret = -1; + bool ifetch = access_type == MMU_INST_FETCH; + + LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, + ifetch ? 'I' : 'D', virtual); + if (ifetch) { + BATlt = env->IBAT[1]; + BATut = env->IBAT[0]; + } else { + BATlt = env->DBAT[1]; + BATut = env->DBAT[0]; + } + for (i = 0; i < env->nb_BATs; i++) { + BATu = &BATut[i]; + BATl = &BATlt[i]; + BEPIu = *BATu & 0xF0000000; + BEPIl = *BATu & 0x0FFE0000; + bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx + " BATl " TARGET_FMT_lx "\n", __func__, + ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); + if ((virtual & 0xF0000000) == BEPIu && + ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { + /* BAT matches */ + if (valid != 0) { + /* Get physical address */ + ctx->raddr = (*BATl & 0xF0000000) | + ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | + (virtual & 0x0001F000); + /* Compute access rights */ + ctx->prot = prot; + ret = check_prot(ctx->prot, access_type); + if (ret == 0) { + LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", + i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', + ctx->prot & PAGE_WRITE ? 'W' : '-'); + } + break; + } + } + } + if (ret < 0) { +#if defined(DEBUG_BATS) + if (qemu_log_enabled()) { + LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); + for (i = 0; i < 4; i++) { + BATu = &BATut[i]; + BATl = &BATlt[i]; + BEPIu = *BATu & 0xF0000000; + BEPIl = *BATu & 0x0FFE0000; + bl = (*BATu & 0x00001FFC) << 15; + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " + TARGET_FMT_lx " " TARGET_FMT_lx "\n", + __func__, ifetch ? 'I' : 'D', i, virtual, + *BATu, *BATl, BEPIu, BEPIl, bl); + } + } +#endif + } + /* No hit */ + return ret; +} + +/* Perform segment based translation */ +static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type, + int type) +{ + PowerPCCPU *cpu = env_archcpu(env); + hwaddr hash; + target_ulong vsid; + int ds, pr, target_page_bits; + int ret; + target_ulong sr, pgidx; + + pr = msr_pr; + ctx->eaddr = eaddr; + + sr = env->sr[eaddr >> 28]; + ctx->key = (((sr & 0x20000000) && (pr != 0)) || + ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; + ds = sr & 0x80000000 ? 1 : 0; + ctx->nx = sr & 0x10000000 ? 1 : 0; + vsid = sr & 0x00FFFFFF; + target_page_bits = TARGET_PAGE_BITS; + qemu_log_mask(CPU_LOG_MMU, + "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx + " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx + " ir=%d dr=%d pr=%d %d t=%d\n", + eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, + (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); + pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; + hash = vsid ^ pgidx; + ctx->ptem = (vsid << 7) | (pgidx >> 10); + + qemu_log_mask(CPU_LOG_MMU, + "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", + ctx->key, ds, ctx->nx, vsid); + ret = -1; + if (!ds) { + /* Check if instruction fetch is allowed, if needed */ + if (type != ACCESS_CODE || ctx->nx == 0) { + /* Page address translation */ + qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx + " htab_mask " TARGET_FMT_plx + " hash " TARGET_FMT_plx "\n", + ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); + ctx->hash[0] = hash; + ctx->hash[1] = ~hash; + + /* Initialize real address with an invalid value */ + ctx->raddr = (hwaddr)-1ULL; + /* Software TLB search */ + ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); +#if defined(DUMP_PAGE_TABLES) + if (qemu_loglevel_mask(CPU_LOG_MMU)) { + CPUState *cs = env_cpu(env); + hwaddr curaddr; + uint32_t a0, a1, a2, a3; + + qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx + "\n", ppc_hash32_hpt_base(cpu), + ppc_hash32_hpt_mask(env) + 0x80); + for (curaddr = ppc_hash32_hpt_base(cpu); + curaddr < (ppc_hash32_hpt_base(cpu) + + ppc_hash32_hpt_mask(cpu) + 0x80); + curaddr += 16) { + a0 = ldl_phys(cs->as, curaddr); + a1 = ldl_phys(cs->as, curaddr + 4); + a2 = ldl_phys(cs->as, curaddr + 8); + a3 = ldl_phys(cs->as, curaddr + 12); + if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { + qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", + curaddr, a0, a1, a2, a3); + } + } + } +#endif + } else { + qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); + ret = -3; + } + } else { + target_ulong sr; + + qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); + /* Direct-store segment : absolutely *BUGGY* for now */ + + /* + * Direct-store implies a 32-bit MMU. + * Check the Segment Register's bus unit ID (BUID). + */ + sr = env->sr[eaddr >> 28]; + if ((sr & 0x1FF00000) >> 20 == 0x07f) { + /* + * Memory-forced I/O controller interface access + * + * If T=1 and BUID=x'07F', the 601 performs a memory + * access to SR[28-31] LA[4-31], bypassing all protection + * mechanisms. + */ + ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; + return 0; + } + + switch (type) { + case ACCESS_INT: + /* Integer load/store : only access allowed */ + break; + case ACCESS_CODE: + /* No code fetch is allowed in direct-store areas */ + return -4; + case ACCESS_FLOAT: + /* Floating point load/store */ + return -4; + case ACCESS_RES: + /* lwarx, ldarx or srwcx. */ + return -4; + case ACCESS_CACHE: + /* + * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi + * + * Should make the instruction do no-op. As it already do + * no-op, it's quite easy :-) + */ + ctx->raddr = eaddr; + return 0; + case ACCESS_EXT: + /* eciwx or ecowx */ + return -4; + default: + qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " + "address translation\n"); + return -4; + } + if ((access_type == MMU_DATA_STORE || ctx->key != 1) && + (access_type == MMU_DATA_LOAD || ctx->key != 0)) { + ctx->raddr = eaddr; + ret = 2; + } else { + ret = -2; + } + } + + return ret; +} + +/* Generic TLB check function for embedded PowerPC implementations */ +int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, + hwaddr *raddrp, + target_ulong address, uint32_t pid, int ext, + int i) +{ + target_ulong mask; + + /* Check valid flag */ + if (!(tlb->prot & PAGE_VALID)) { + return -1; + } + mask = ~(tlb->size - 1); + LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx + " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, + mask, (uint32_t)tlb->PID, tlb->prot); + /* Check PID */ + if (tlb->PID != 0 && tlb->PID != pid) { + return -1; + } + /* Check effective address */ + if ((address & mask) != tlb->EPN) { + return -1; + } + *raddrp = (tlb->RPN & mask) | (address & ~mask); + if (ext) { + /* Extend the physical address to 36 bits */ + *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; + } + + return 0; +} + +static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong address, + MMUAccessType access_type) +{ + ppcemb_tlb_t *tlb; + hwaddr raddr; + int i, ret, zsel, zpr, pr; + + ret = -1; + raddr = (hwaddr)-1ULL; + pr = msr_pr; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + if (ppcemb_tlb_check(env, tlb, &raddr, address, + env->spr[SPR_40x_PID], 0, i) < 0) { + continue; + } + zsel = (tlb->attr >> 4) & 0xF; + zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; + LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", + __func__, i, zsel, zpr, access_type, tlb->attr); + /* Check execute enable bit */ + switch (zpr) { + case 0x2: + if (pr != 0) { + goto check_perms; + } + /* fall through */ + case 0x3: + /* All accesses granted */ + ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; + ret = 0; + break; + case 0x0: + if (pr != 0) { + /* Raise Zone protection fault. */ + env->spr[SPR_40x_ESR] = 1 << 22; + ctx->prot = 0; + ret = -2; + break; + } + /* fall through */ + case 0x1: + check_perms: + /* Check from TLB entry */ + ctx->prot = tlb->prot; + ret = check_prot(ctx->prot, access_type); + if (ret == -2) { + env->spr[SPR_40x_ESR] = 0; + } + break; + } + if (ret >= 0) { + ctx->raddr = raddr; + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, + ret); + return 0; + } + } + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, raddr, ctx->prot, ret); + + return ret; +} + +void store_40x_sler(CPUPPCState *env, uint32_t val) +{ + /* XXX: TO BE FIXED */ + if (val != 0x00000000) { + cpu_abort(env_cpu(env), + "Little-endian regions are not supported by now\n"); + } + env->spr[SPR_405_SLER] = val; +} + +static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, + hwaddr *raddr, int *prot, target_ulong address, + MMUAccessType access_type, int i) +{ + int prot2; + + if (ppcemb_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID], + !env->nb_pids, i) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID1] && + ppcemb_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID2] && + ppcemb_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { + goto found_tlb; + } + + LOG_SWTLB("%s: TLB entry not found\n", __func__); + return -1; + +found_tlb: + + if (msr_pr != 0) { + prot2 = tlb->prot & 0xF; + } else { + prot2 = (tlb->prot >> 4) & 0xF; + } + + /* Check the address space */ + if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { + LOG_SWTLB("%s: AS doesn't match\n", __func__); + return -1; + } + + *prot = prot2; + if (prot2 & prot_for_access_type(access_type)) { + LOG_SWTLB("%s: good TLB!\n", __func__); + return 0; + } + + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); + return access_type == MMU_INST_FETCH ? -3 : -2; +} + +static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong address, + MMUAccessType access_type) +{ + ppcemb_tlb_t *tlb; + hwaddr raddr; + int i, ret; + + ret = -1; + raddr = (hwaddr)-1ULL; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, + access_type, i); + if (ret != -1) { + break; + } + } + + if (ret >= 0) { + ctx->raddr = raddr; + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, + ret); + } else { + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, raddr, ctx->prot, ret); + } + + return ret; +} + +hwaddr booke206_tlb_to_page_size(CPUPPCState *env, + ppcmas_tlb_t *tlb) +{ + int tlbm_size; + + tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; + + return 1024ULL << tlbm_size; +} + +/* TLB check function for MAS based SoftTLBs */ +int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, + hwaddr *raddrp, target_ulong address, + uint32_t pid) +{ + hwaddr mask; + uint32_t tlb_pid; + + if (!msr_cm) { + /* In 32bit mode we can only address 32bit EAs */ + address = (uint32_t)address; + } + + /* Check valid flag */ + if (!(tlb->mas1 & MAS1_VALID)) { + return -1; + } + + mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); + LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" + PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" + PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, + tlb->mas7_3, tlb->mas8); + + /* Check PID */ + tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; + if (tlb_pid != 0 && tlb_pid != pid) { + return -1; + } + + /* Check effective address */ + if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { + return -1; + } + + if (raddrp) { + *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); + } + + return 0; +} + +static bool is_epid_mmu(int mmu_idx) +{ + return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; +} + +static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) +{ + uint32_t esr = 0; + if (access_type == MMU_DATA_STORE) { + esr |= ESR_ST; + } + if (is_epid_mmu(mmu_idx)) { + esr |= ESR_EPID; + } + return esr; +} + +/* + * Get EPID register given the mmu_idx. If this is regular load, + * construct the EPID access bits from current processor state + * + * Get the effective AS and PR bits and the PID. The PID is returned + * only if EPID load is requested, otherwise the caller must detect + * the correct EPID. Return true if valid EPID is returned. + */ +static bool mmubooke206_get_as(CPUPPCState *env, + int mmu_idx, uint32_t *epid_out, + bool *as_out, bool *pr_out) +{ + if (is_epid_mmu(mmu_idx)) { + uint32_t epidr; + if (mmu_idx == PPC_TLB_EPID_STORE) { + epidr = env->spr[SPR_BOOKE_EPSC]; + } else { + epidr = env->spr[SPR_BOOKE_EPLC]; + } + *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; + *as_out = !!(epidr & EPID_EAS); + *pr_out = !!(epidr & EPID_EPR); + return true; + } else { + *as_out = msr_ds; + *pr_out = msr_pr; + return false; + } +} + +/* Check if the tlb found by hashing really matches */ +static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, + hwaddr *raddr, int *prot, + target_ulong address, + MMUAccessType access_type, int mmu_idx) +{ + int prot2 = 0; + uint32_t epid; + bool as, pr; + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); + + if (!use_epid) { + if (ppcmas_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID]) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID1] && + ppcmas_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID1]) >= 0) { + goto found_tlb; + } + + if (env->spr[SPR_BOOKE_PID2] && + ppcmas_tlb_check(env, tlb, raddr, address, + env->spr[SPR_BOOKE_PID2]) >= 0) { + goto found_tlb; + } + } else { + if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { + goto found_tlb; + } + } + + LOG_SWTLB("%s: TLB entry not found\n", __func__); + return -1; + +found_tlb: + + if (pr) { + if (tlb->mas7_3 & MAS3_UR) { + prot2 |= PAGE_READ; + } + if (tlb->mas7_3 & MAS3_UW) { + prot2 |= PAGE_WRITE; + } + if (tlb->mas7_3 & MAS3_UX) { + prot2 |= PAGE_EXEC; + } + } else { + if (tlb->mas7_3 & MAS3_SR) { + prot2 |= PAGE_READ; + } + if (tlb->mas7_3 & MAS3_SW) { + prot2 |= PAGE_WRITE; + } + if (tlb->mas7_3 & MAS3_SX) { + prot2 |= PAGE_EXEC; + } + } + + /* Check the address space and permissions */ + if (access_type == MMU_INST_FETCH) { + /* There is no way to fetch code using epid load */ + assert(!use_epid); + as = msr_ir; + } + + if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { + LOG_SWTLB("%s: AS doesn't match\n", __func__); + return -1; + } + + *prot = prot2; + if (prot2 & prot_for_access_type(access_type)) { + LOG_SWTLB("%s: good TLB!\n", __func__); + return 0; + } + + LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); + return access_type == MMU_INST_FETCH ? -3 : -2; +} + +static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong address, + MMUAccessType access_type, + int mmu_idx) +{ + ppcmas_tlb_t *tlb; + hwaddr raddr; + int i, j, ret; + + ret = -1; + raddr = (hwaddr)-1ULL; + + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { + int ways = booke206_tlb_ways(env, i); + + for (j = 0; j < ways; j++) { + tlb = booke206_get_tlbm(env, i, address, j); + if (!tlb) { + continue; + } + ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, + access_type, mmu_idx); + if (ret != -1) { + goto found_tlb; + } + } + } + +found_tlb: + + if (ret >= 0) { + ctx->raddr = raddr; + LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, ctx->raddr, ctx->prot, + ret); + } else { + LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx + " %d %d\n", __func__, address, raddr, ctx->prot, ret); + } + + return ret; +} + +static const char *book3e_tsize_to_str[32] = { + "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", + "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", + "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", + "1T", "2T" +}; + +static void mmubooke_dump_mmu(CPUPPCState *env) +{ + ppcemb_tlb_t *entry; + int i; + + if (kvm_enabled() && !env->kvm_sw_tlb) { + qemu_printf("Cannot access KVM TLB\n"); + return; + } + + qemu_printf("\nTLB:\n"); + qemu_printf("Effective Physical Size PID Prot " + "Attr\n"); + + entry = &env->tlb.tlbe[0]; + for (i = 0; i < env->nb_tlb; i++, entry++) { + hwaddr ea, pa; + target_ulong mask; + uint64_t size = (uint64_t)entry->size; + char size_buf[20]; + + /* Check valid flag */ + if (!(entry->prot & PAGE_VALID)) { + continue; + } + + mask = ~(entry->size - 1); + ea = entry->EPN & mask; + pa = entry->RPN & mask; + /* Extend the physical address to 36 bits */ + pa |= (hwaddr)(entry->RPN & 0xF) << 32; + if (size >= 1 * MiB) { + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); + } else { + snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); + } + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", + (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, + entry->prot, entry->attr); + } + +} + +static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, + int tlbsize) +{ + ppcmas_tlb_t *entry; + int i; + + qemu_printf("\nTLB%d:\n", tlbn); + qemu_printf("Effective Physical Size TID TS SRWX" + " URWX WIMGE U0123\n"); + + entry = &env->tlb.tlbm[offset]; + for (i = 0; i < tlbsize; i++, entry++) { + hwaddr ea, pa, size; + int tsize; + + if (!(entry->mas1 & MAS1_VALID)) { + continue; + } + + tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; + size = 1024ULL << tsize; + ea = entry->mas2 & ~(size - 1); + pa = entry->mas7_3 & ~(size - 1); + + qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" + "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", + (uint64_t)ea, (uint64_t)pa, + book3e_tsize_to_str[tsize], + (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, + (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, + entry->mas7_3 & MAS3_SR ? 'R' : '-', + entry->mas7_3 & MAS3_SW ? 'W' : '-', + entry->mas7_3 & MAS3_SX ? 'X' : '-', + entry->mas7_3 & MAS3_UR ? 'R' : '-', + entry->mas7_3 & MAS3_UW ? 'W' : '-', + entry->mas7_3 & MAS3_UX ? 'X' : '-', + entry->mas2 & MAS2_W ? 'W' : '-', + entry->mas2 & MAS2_I ? 'I' : '-', + entry->mas2 & MAS2_M ? 'M' : '-', + entry->mas2 & MAS2_G ? 'G' : '-', + entry->mas2 & MAS2_E ? 'E' : '-', + entry->mas7_3 & MAS3_U0 ? '0' : '-', + entry->mas7_3 & MAS3_U1 ? '1' : '-', + entry->mas7_3 & MAS3_U2 ? '2' : '-', + entry->mas7_3 & MAS3_U3 ? '3' : '-'); + } +} + +static void mmubooke206_dump_mmu(CPUPPCState *env) +{ + int offset = 0; + int i; + + if (kvm_enabled() && !env->kvm_sw_tlb) { + qemu_printf("Cannot access KVM TLB\n"); + return; + } + + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { + int size = booke206_tlb_size(env, i); + + if (size == 0) { + continue; + } + + mmubooke206_dump_one_tlb(env, i, offset, size); + offset += size; + } +} + +static void mmu6xx_dump_BATs(CPUPPCState *env, int type) +{ + target_ulong *BATlt, *BATut, *BATu, *BATl; + target_ulong BEPIl, BEPIu, bl; + int i; + + switch (type) { + case ACCESS_CODE: + BATlt = env->IBAT[1]; + BATut = env->IBAT[0]; + break; + default: + BATlt = env->DBAT[1]; + BATut = env->DBAT[0]; + break; + } + + for (i = 0; i < env->nb_BATs; i++) { + BATu = &BATut[i]; + BATl = &BATlt[i]; + BEPIu = *BATu & 0xF0000000; + BEPIl = *BATu & 0x0FFE0000; + bl = (*BATu & 0x00001FFC) << 15; + qemu_printf("%s BAT%d BATu " TARGET_FMT_lx + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " + TARGET_FMT_lx " " TARGET_FMT_lx "\n", + type == ACCESS_CODE ? "code" : "data", i, + *BATu, *BATl, BEPIu, BEPIl, bl); + } +} + +static void mmu6xx_dump_mmu(CPUPPCState *env) +{ + PowerPCCPU *cpu = env_archcpu(env); + ppc6xx_tlb_t *tlb; + target_ulong sr; + int type, way, entry, i; + + qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); + qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); + + qemu_printf("\nSegment registers:\n"); + for (i = 0; i < 32; i++) { + sr = env->sr[i]; + if (sr & 0x80000000) { + qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " + "CNTLR_SPEC=0x%05x\n", i, + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, + sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), + (uint32_t)(sr & 0xFFFFF)); + } else { + qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, + sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, + sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, + (uint32_t)(sr & 0x00FFFFFF)); + } + } + + qemu_printf("\nBATs:\n"); + mmu6xx_dump_BATs(env, ACCESS_INT); + mmu6xx_dump_BATs(env, ACCESS_CODE); + + if (env->id_tlbs != 1) { + qemu_printf("ERROR: 6xx MMU should have separated TLB" + " for code and data\n"); + } + + qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); + + for (type = 0; type < 2; type++) { + for (way = 0; way < env->nb_ways; way++) { + for (entry = env->nb_tlb * type + env->tlb_per_way * way; + entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); + entry++) { + + tlb = &env->tlb.tlb6[entry]; + qemu_printf("%s TLB %02d/%02d way:%d %s [" + TARGET_FMT_lx " " TARGET_FMT_lx "]\n", + type ? "code" : "data", entry % env->nb_tlb, + env->nb_tlb, way, + pte_is_valid(tlb->pte0) ? "valid" : "inval", + tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); + } + } + } +} + +void dump_mmu(CPUPPCState *env) +{ + switch (env->mmu_model) { + case POWERPC_MMU_BOOKE: + mmubooke_dump_mmu(env); + break; + case POWERPC_MMU_BOOKE206: + mmubooke206_dump_mmu(env); + break; + case POWERPC_MMU_SOFT_6xx: + case POWERPC_MMU_SOFT_74xx: + mmu6xx_dump_mmu(env); + break; +#if defined(TARGET_PPC64) + case POWERPC_MMU_64B: + case POWERPC_MMU_2_03: + case POWERPC_MMU_2_06: + case POWERPC_MMU_2_07: + dump_slb(env_archcpu(env)); + break; + case POWERPC_MMU_3_00: + if (ppc64_v3_radix(env_archcpu(env))) { + qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", + __func__); + } else { + dump_slb(env_archcpu(env)); + } + break; +#endif + default: + qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); + } +} + +static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, + MMUAccessType access_type) +{ + int in_plb, ret; + + ctx->raddr = eaddr; + ctx->prot = PAGE_READ | PAGE_EXEC; + ret = 0; + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + case POWERPC_MMU_SOFT_74xx: + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_REAL: + case POWERPC_MMU_BOOKE: + ctx->prot |= PAGE_WRITE; + break; + + case POWERPC_MMU_SOFT_4xx_Z: + if (unlikely(msr_pe != 0)) { + /* + * 403 family add some particular protections, using + * PBL/PBU registers for accesses with no translation. + */ + in_plb = + /* Check PLB validity */ + (env->pb[0] < env->pb[1] && + /* and address in plb area */ + eaddr >= env->pb[0] && eaddr < env->pb[1]) || + (env->pb[2] < env->pb[3] && + eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; + if (in_plb ^ msr_px) { + /* Access in protected area */ + if (access_type == MMU_DATA_STORE) { + /* Access is not allowed */ + ret = -2; + } + } else { + /* Read-write access is allowed */ + ctx->prot |= PAGE_WRITE; + } + } + break; + + default: + /* Caller's checks mean we should never get here for other models */ + abort(); + return -1; + } + + return ret; +} + +int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, + MMUAccessType access_type, int type, + int mmu_idx) +{ + int ret = -1; + bool real_mode = (type == ACCESS_CODE && msr_ir == 0) + || (type != ACCESS_CODE && msr_dr == 0); + + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + case POWERPC_MMU_SOFT_74xx: + if (real_mode) { + ret = check_physical(env, ctx, eaddr, access_type); + } else { + /* Try to find a BAT */ + if (env->nb_BATs != 0) { + ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); + } + if (ret < 0) { + /* We didn't match any BAT entry or don't have BATs */ + ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); + } + } + break; + + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_SOFT_4xx_Z: + if (real_mode) { + ret = check_physical(env, ctx, eaddr, access_type); + } else { + ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); + } + break; + case POWERPC_MMU_BOOKE: + ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); + break; + case POWERPC_MMU_BOOKE206: + ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, + mmu_idx); + break; + case POWERPC_MMU_MPC8xx: + /* XXX: TODO */ + cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); + break; + case POWERPC_MMU_REAL: + if (real_mode) { + ret = check_physical(env, ctx, eaddr, access_type); + } else { + cpu_abort(env_cpu(env), + "PowerPC in real mode do not do any translation\n"); + } + return -1; + default: + cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); + return -1; + } + + return ret; +} + +int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, + target_ulong eaddr, MMUAccessType access_type, + int type) +{ + return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); +} + +hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) +{ + PowerPCCPU *cpu = POWERPC_CPU(cs); + CPUPPCState *env = &cpu->env; + mmu_ctx_t ctx; + + switch (env->mmu_model) { +#if defined(TARGET_PPC64) + case POWERPC_MMU_64B: + case POWERPC_MMU_2_03: + case POWERPC_MMU_2_06: + case POWERPC_MMU_2_07: + return ppc_hash64_get_phys_page_debug(cpu, addr); + case POWERPC_MMU_3_00: + return ppc64_v3_get_phys_page_debug(cpu, addr); +#endif + + case POWERPC_MMU_32B: + case POWERPC_MMU_601: + return ppc_hash32_get_phys_page_debug(cpu, addr); + + default: + ; + } + + if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, + ACCESS_INT) != 0)) { + + /* + * Some MMUs have separate TLBs for code and data. If we only + * try an ACCESS_INT, we may not be able to read instructions + * mapped by code TLBs, so we also try a ACCESS_CODE. + */ + if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, + ACCESS_CODE) != 0)) { + return -1; + } + } + + return ctx.raddr & TARGET_PAGE_MASK; +} + +static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, + MMUAccessType access_type, int mmu_idx) +{ + uint32_t epid; + bool as, pr; + uint32_t missed_tid = 0; + bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); + + if (access_type == MMU_INST_FETCH) { + as = msr_ir; + } + env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; + env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; + env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; + env->spr[SPR_BOOKE_MAS3] = 0; + env->spr[SPR_BOOKE_MAS6] = 0; + env->spr[SPR_BOOKE_MAS7] = 0; + + /* AS */ + if (as) { + env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; + env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; + } + + env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; + env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; + + if (!use_epid) { + switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { + case MAS4_TIDSELD_PID0: + missed_tid = env->spr[SPR_BOOKE_PID]; + break; + case MAS4_TIDSELD_PID1: + missed_tid = env->spr[SPR_BOOKE_PID1]; + break; + case MAS4_TIDSELD_PID2: + missed_tid = env->spr[SPR_BOOKE_PID2]; + break; + } + env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; + } else { + missed_tid = epid; + env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; + } + env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); + + + /* next victim logic */ + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; + env->last_way++; + env->last_way &= booke206_tlb_ways(env, 0) - 1; + env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; +} + +/* Perform address translation */ +static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, + MMUAccessType access_type, int mmu_idx) +{ + CPUState *cs = env_cpu(env); + PowerPCCPU *cpu = POWERPC_CPU(cs); + mmu_ctx_t ctx; + int type; + int ret = 0; + + if (access_type == MMU_INST_FETCH) { + /* code access */ + type = ACCESS_CODE; + } else { + /* data access */ + type = env->access_type; + } + ret = get_physical_address_wtlb(env, &ctx, address, access_type, + type, mmu_idx); + if (ret == 0) { + tlb_set_page(cs, address & TARGET_PAGE_MASK, + ctx.raddr & TARGET_PAGE_MASK, ctx.prot, + mmu_idx, TARGET_PAGE_SIZE); + ret = 0; + } else if (ret < 0) { + LOG_MMU_STATE(cs); + if (type == ACCESS_CODE) { + switch (ret) { + case -1: + /* No matches in page tables or TLB */ + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + cs->exception_index = POWERPC_EXCP_IFTLB; + env->error_code = 1 << 18; + env->spr[SPR_IMISS] = address; + env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; + goto tlb_miss; + case POWERPC_MMU_SOFT_74xx: + cs->exception_index = POWERPC_EXCP_IFTLB; + goto tlb_miss_74xx; + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_SOFT_4xx_Z: + cs->exception_index = POWERPC_EXCP_ITLB; + env->error_code = 0; + env->spr[SPR_40x_DEAR] = address; + env->spr[SPR_40x_ESR] = 0x00000000; + break; + case POWERPC_MMU_BOOKE206: + booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); + /* fall through */ + case POWERPC_MMU_BOOKE: + cs->exception_index = POWERPC_EXCP_ITLB; + env->error_code = 0; + env->spr[SPR_BOOKE_DEAR] = address; + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); + return -1; + case POWERPC_MMU_MPC8xx: + /* XXX: TODO */ + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); + break; + case POWERPC_MMU_REAL: + cpu_abort(cs, "PowerPC in real mode should never raise " + "any MMU exceptions\n"); + return -1; + default: + cpu_abort(cs, "Unknown or invalid MMU model\n"); + return -1; + } + break; + case -2: + /* Access rights violation */ + cs->exception_index = POWERPC_EXCP_ISI; + env->error_code = 0x08000000; + break; + case -3: + /* No execute protection violation */ + if ((env->mmu_model == POWERPC_MMU_BOOKE) || + (env->mmu_model == POWERPC_MMU_BOOKE206)) { + env->spr[SPR_BOOKE_ESR] = 0x00000000; + } + cs->exception_index = POWERPC_EXCP_ISI; + env->error_code = 0x10000000; + break; + case -4: + /* Direct store exception */ + /* No code fetch is allowed in direct-store areas */ + cs->exception_index = POWERPC_EXCP_ISI; + env->error_code = 0x10000000; + break; + } + } else { + switch (ret) { + case -1: + /* No matches in page tables or TLB */ + switch (env->mmu_model) { + case POWERPC_MMU_SOFT_6xx: + if (access_type == MMU_DATA_STORE) { + cs->exception_index = POWERPC_EXCP_DSTLB; + env->error_code = 1 << 16; + } else { + cs->exception_index = POWERPC_EXCP_DLTLB; + env->error_code = 0; + } + env->spr[SPR_DMISS] = address; + env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; + tlb_miss: + env->error_code |= ctx.key << 19; + env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + + get_pteg_offset32(cpu, ctx.hash[0]); + env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + + get_pteg_offset32(cpu, ctx.hash[1]); + break; + case POWERPC_MMU_SOFT_74xx: + if (access_type == MMU_DATA_STORE) { + cs->exception_index = POWERPC_EXCP_DSTLB; + } else { + cs->exception_index = POWERPC_EXCP_DLTLB; + } + tlb_miss_74xx: + /* Implement LRU algorithm */ + env->error_code = ctx.key << 19; + env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | + ((env->last_way + 1) & (env->nb_ways - 1)); + env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; + break; + case POWERPC_MMU_SOFT_4xx: + case POWERPC_MMU_SOFT_4xx_Z: + cs->exception_index = POWERPC_EXCP_DTLB; + env->error_code = 0; + env->spr[SPR_40x_DEAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_40x_ESR] = 0x00800000; + } else { + env->spr[SPR_40x_ESR] = 0x00000000; + } + break; + case POWERPC_MMU_MPC8xx: + /* XXX: TODO */ + cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); + break; + case POWERPC_MMU_BOOKE206: + booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); + /* fall through */ + case POWERPC_MMU_BOOKE: + cs->exception_index = POWERPC_EXCP_DTLB; + env->error_code = 0; + env->spr[SPR_BOOKE_DEAR] = address; + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); + return -1; + case POWERPC_MMU_REAL: + cpu_abort(cs, "PowerPC in real mode should never raise " + "any MMU exceptions\n"); + return -1; + default: + cpu_abort(cs, "Unknown or invalid MMU model\n"); + return -1; + } + break; + case -2: + /* Access rights violation */ + cs->exception_index = POWERPC_EXCP_DSI; + env->error_code = 0; + if (env->mmu_model == POWERPC_MMU_SOFT_4xx + || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { + env->spr[SPR_40x_DEAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_40x_ESR] |= 0x00800000; + } + } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || + (env->mmu_model == POWERPC_MMU_BOOKE206)) { + env->spr[SPR_BOOKE_DEAR] = address; + env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); + } else { + env->spr[SPR_DAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_DSISR] = 0x0A000000; + } else { + env->spr[SPR_DSISR] = 0x08000000; + } + } + break; + case -4: + /* Direct store exception */ + switch (type) { + case ACCESS_FLOAT: + /* Floating point load/store */ + cs->exception_index = POWERPC_EXCP_ALIGN; + env->error_code = POWERPC_EXCP_ALIGN_FP; + env->spr[SPR_DAR] = address; + break; + case ACCESS_RES: + /* lwarx, ldarx or stwcx. */ + cs->exception_index = POWERPC_EXCP_DSI; + env->error_code = 0; + env->spr[SPR_DAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_DSISR] = 0x06000000; + } else { + env->spr[SPR_DSISR] = 0x04000000; + } + break; + case ACCESS_EXT: + /* eciwx or ecowx */ + cs->exception_index = POWERPC_EXCP_DSI; + env->error_code = 0; + env->spr[SPR_DAR] = address; + if (access_type == MMU_DATA_STORE) { + env->spr[SPR_DSISR] = 0x06100000; + } else { + env->spr[SPR_DSISR] = 0x04100000; + } + break; + default: + printf("DSI: invalid exception (%d)\n", ret); + cs->exception_index = POWERPC_EXCP_PROGRAM; + env->error_code = + POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; + env->spr[SPR_DAR] = address; + break; + } + break; + } + } + ret = 1; + } + + return ret; +} + +bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, + MMUAccessType access_type, int mmu_idx, + bool probe, uintptr_t retaddr) +{ + PowerPCCPU *cpu = POWERPC_CPU(cs); + PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); + CPUPPCState *env = &cpu->env; + int ret; + + if (pcc->handle_mmu_fault) { + ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); + } else { + ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); + } + if (unlikely(ret != 0)) { + if (probe) { + return false; + } + raise_exception_err_ra(env, cs->exception_index, env->error_code, + retaddr); + } + return true; +} diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c index 803b66f2b0..dbf7b398cd 100644 --- a/target/ppc/mmu_helper.c +++ b/target/ppc/mmu_helper.c @@ -33,1736 +33,156 @@ #include "internal.h" #include "mmu-book3s-v3.h" #include "mmu-radix64.h" +#include "exec/helper-proto.h" +#include "exec/cpu_ldst.h" -#ifdef CONFIG_TCG -#include "exec/helper-proto.h" -#include "exec/cpu_ldst.h" -#endif -/* #define DEBUG_MMU */ -/* #define DEBUG_BATS */ -/* #define DEBUG_SOFTWARE_TLB */ -/* #define DUMP_PAGE_TABLES */ -/* #define FLUSH_ALL_TLBS */ - -#ifdef DEBUG_MMU -# define LOG_MMU_STATE(cpu) log_cpu_state_mask(CPU_LOG_MMU, (cpu), 0) -#else -# define LOG_MMU_STATE(cpu) do { } while (0) -#endif - -#ifdef DEBUG_SOFTWARE_TLB -# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) -#else -# define LOG_SWTLB(...) do { } while (0) -#endif - -#ifdef DEBUG_BATS -# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) -#else -# define LOG_BATS(...) do { } while (0) -#endif - -/*****************************************************************************/ -/* PowerPC MMU emulation */ - -/* Context used internally during MMU translations */ -typedef struct mmu_ctx_t mmu_ctx_t; -struct mmu_ctx_t { - hwaddr raddr; /* Real address */ - hwaddr eaddr; /* Effective address */ - int prot; /* Protection bits */ - hwaddr hash[2]; /* Pagetable hash values */ - target_ulong ptem; /* Virtual segment ID | API */ - int key; /* Access key */ - int nx; /* Non-execute area */ -}; - -/* Common routines used by software and hardware TLBs emulation */ -static inline int pte_is_valid(target_ulong pte0) -{ - return pte0 & 0x80000000 ? 1 : 0; -} - -static inline void pte_invalidate(target_ulong *pte0) -{ - *pte0 &= ~0x80000000; -} - -#define PTE_PTEM_MASK 0x7FFFFFBF -#define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B) - -static int pp_check(int key, int pp, int nx) -{ - int access; - - /* Compute access rights */ - access = 0; - if (key == 0) { - switch (pp) { - case 0x0: - case 0x1: - case 0x2: - access |= PAGE_WRITE; - /* fall through */ - case 0x3: - access |= PAGE_READ; - break; - } - } else { - switch (pp) { - case 0x0: - access = 0; - break; - case 0x1: - case 0x3: - access = PAGE_READ; - break; - case 0x2: - access = PAGE_READ | PAGE_WRITE; - break; - } - } - if (nx == 0) { - access |= PAGE_EXEC; - } - - return access; -} - -static int check_prot(int prot, MMUAccessType access_type) -{ - return prot & prot_for_access_type(access_type) ? 0 : -2; -} - -static int ppc6xx_tlb_pte_check(mmu_ctx_t *ctx, target_ulong pte0, - target_ulong pte1, int h, - MMUAccessType access_type) -{ - target_ulong ptem, mmask; - int access, ret, pteh, ptev, pp; - - ret = -1; - /* Check validity and table match */ - ptev = pte_is_valid(pte0); - pteh = (pte0 >> 6) & 1; - if (ptev && h == pteh) { - /* Check vsid & api */ - ptem = pte0 & PTE_PTEM_MASK; - mmask = PTE_CHECK_MASK; - pp = pte1 & 0x00000003; - if (ptem == ctx->ptem) { - if (ctx->raddr != (hwaddr)-1ULL) { - /* all matches should have equal RPN, WIMG & PP */ - if ((ctx->raddr & mmask) != (pte1 & mmask)) { - qemu_log_mask(CPU_LOG_MMU, "Bad RPN/WIMG/PP\n"); - return -3; - } - } - /* Compute access rights */ - access = pp_check(ctx->key, pp, ctx->nx); - /* Keep the matching PTE information */ - ctx->raddr = pte1; - ctx->prot = access; - ret = check_prot(ctx->prot, access_type); - if (ret == 0) { - /* Access granted */ - qemu_log_mask(CPU_LOG_MMU, "PTE access granted !\n"); - } else { - /* Access right violation */ - qemu_log_mask(CPU_LOG_MMU, "PTE access rejected\n"); - } - } - } - - return ret; -} - -static int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p, - int ret, MMUAccessType access_type) -{ - int store = 0; - - /* Update page flags */ - if (!(*pte1p & 0x00000100)) { - /* Update accessed flag */ - *pte1p |= 0x00000100; - store = 1; - } - if (!(*pte1p & 0x00000080)) { - if (access_type == MMU_DATA_STORE && ret == 0) { - /* Update changed flag */ - *pte1p |= 0x00000080; - store = 1; - } else { - /* Force page fault for first write access */ - ctx->prot &= ~PAGE_WRITE; - } - } - - return store; -} - -/* Software driven TLB helpers */ -static inline int ppc6xx_tlb_getnum(CPUPPCState *env, target_ulong eaddr, - int way, int is_code) -{ - int nr; - - /* Select TLB num in a way from address */ - nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1); - /* Select TLB way */ - nr += env->tlb_per_way * way; - /* 6xx have separate TLBs for instructions and data */ - if (is_code && env->id_tlbs == 1) { - nr += env->nb_tlb; - } - - return nr; -} - -static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) -{ - ppc6xx_tlb_t *tlb; - int nr, max; - - /* LOG_SWTLB("Invalidate all TLBs\n"); */ - /* Invalidate all defined software TLB */ - max = env->nb_tlb; - if (env->id_tlbs == 1) { - max *= 2; - } - for (nr = 0; nr < max; nr++) { - tlb = &env->tlb.tlb6[nr]; - pte_invalidate(&tlb->pte0); - } - tlb_flush(env_cpu(env)); -} - -static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, - target_ulong eaddr, - int is_code, int match_epn) -{ -#if !defined(FLUSH_ALL_TLBS) - CPUState *cs = env_cpu(env); - ppc6xx_tlb_t *tlb; - int way, nr; - - /* Invalidate ITLB + DTLB, all ways */ - for (way = 0; way < env->nb_ways; way++) { - nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); - tlb = &env->tlb.tlb6[nr]; - if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { - LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, - env->nb_tlb, eaddr); - pte_invalidate(&tlb->pte0); - tlb_flush_page(cs, tlb->EPN); - } - } -#else - /* XXX: PowerPC specification say this is valid as well */ - ppc6xx_tlb_invalidate_all(env); -#endif -} - -static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, - target_ulong eaddr, int is_code) -{ - ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); -} - -#ifdef CONFIG_TCG -static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, - int is_code, target_ulong pte0, target_ulong pte1) -{ - ppc6xx_tlb_t *tlb; - int nr; - - nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); - tlb = &env->tlb.tlb6[nr]; - LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx - " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); - /* Invalidate any pending reference in QEMU for this virtual address */ - ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); - tlb->pte0 = pte0; - tlb->pte1 = pte1; - tlb->EPN = EPN; - /* Store last way for LRU mechanism */ - env->last_way = way; -} -#endif - -static int ppc6xx_tlb_check(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, MMUAccessType access_type) -{ - ppc6xx_tlb_t *tlb; - int nr, best, way; - int ret; - - best = -1; - ret = -1; /* No TLB found */ - for (way = 0; way < env->nb_ways; way++) { - nr = ppc6xx_tlb_getnum(env, eaddr, way, access_type == MMU_INST_FETCH); - tlb = &env->tlb.tlb6[nr]; - /* This test "emulates" the PTE index match for hardware TLBs */ - if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) { - LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx - "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb, - pte_is_valid(tlb->pte0) ? "valid" : "inval", - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr); - continue; - } - LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " " - TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb, - pte_is_valid(tlb->pte0) ? "valid" : "inval", - tlb->EPN, eaddr, tlb->pte1, - access_type == MMU_DATA_STORE ? 'S' : 'L', - access_type == MMU_INST_FETCH ? 'I' : 'D'); - switch (ppc6xx_tlb_pte_check(ctx, tlb->pte0, tlb->pte1, - 0, access_type)) { - case -3: - /* TLB inconsistency */ - return -1; - case -2: - /* Access violation */ - ret = -2; - best = nr; - break; - case -1: - default: - /* No match */ - break; - case 0: - /* access granted */ - /* - * XXX: we should go on looping to check all TLBs - * consistency but we can speed-up the whole thing as - * the result would be undefined if TLBs are not - * consistent. - */ - ret = 0; - best = nr; - goto done; - } - } - if (best != -1) { - done: - LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n", - ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret); - /* Update page flags */ - pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, access_type); - } - - return ret; -} - -/* Perform BAT hit & translation */ -static inline void bat_size_prot(CPUPPCState *env, target_ulong *blp, - int *validp, int *protp, target_ulong *BATu, - target_ulong *BATl) -{ - target_ulong bl; - int pp, valid, prot; - - bl = (*BATu & 0x00001FFC) << 15; - valid = 0; - prot = 0; - if (((msr_pr == 0) && (*BATu & 0x00000002)) || - ((msr_pr != 0) && (*BATu & 0x00000001))) { - valid = 1; - pp = *BATl & 0x00000003; - if (pp != 0) { - prot = PAGE_READ | PAGE_EXEC; - if (pp == 0x2) { - prot |= PAGE_WRITE; - } - } - } - *blp = bl; - *validp = valid; - *protp = prot; -} - -static int get_bat_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong virtual, MMUAccessType access_type) -{ - target_ulong *BATlt, *BATut, *BATu, *BATl; - target_ulong BEPIl, BEPIu, bl; - int i, valid, prot; - int ret = -1; - bool ifetch = access_type == MMU_INST_FETCH; - - LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, - ifetch ? 'I' : 'D', virtual); - if (ifetch) { - BATlt = env->IBAT[1]; - BATut = env->IBAT[0]; - } else { - BATlt = env->DBAT[1]; - BATut = env->DBAT[0]; - } - for (i = 0; i < env->nb_BATs; i++) { - BATu = &BATut[i]; - BATl = &BATlt[i]; - BEPIu = *BATu & 0xF0000000; - BEPIl = *BATu & 0x0FFE0000; - bat_size_prot(env, &bl, &valid, &prot, BATu, BATl); - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx - " BATl " TARGET_FMT_lx "\n", __func__, - ifetch ? 'I' : 'D', i, virtual, *BATu, *BATl); - if ((virtual & 0xF0000000) == BEPIu && - ((virtual & 0x0FFE0000) & ~bl) == BEPIl) { - /* BAT matches */ - if (valid != 0) { - /* Get physical address */ - ctx->raddr = (*BATl & 0xF0000000) | - ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) | - (virtual & 0x0001F000); - /* Compute access rights */ - ctx->prot = prot; - ret = check_prot(ctx->prot, access_type); - if (ret == 0) { - LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", - i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', - ctx->prot & PAGE_WRITE ? 'W' : '-'); - } - break; - } - } - } - if (ret < 0) { -#if defined(DEBUG_BATS) - if (qemu_log_enabled()) { - LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); - for (i = 0; i < 4; i++) { - BATu = &BATut[i]; - BATl = &BATlt[i]; - BEPIu = *BATu & 0xF0000000; - BEPIl = *BATu & 0x0FFE0000; - bl = (*BATu & 0x00001FFC) << 15; - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " - TARGET_FMT_lx " " TARGET_FMT_lx "\n", - __func__, ifetch ? 'I' : 'D', i, virtual, - *BATu, *BATl, BEPIu, BEPIl, bl); - } - } -#endif - } - /* No hit */ - return ret; -} - -/* Perform segment based translation */ -static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, MMUAccessType access_type, - int type) -{ - PowerPCCPU *cpu = env_archcpu(env); - hwaddr hash; - target_ulong vsid; - int ds, pr, target_page_bits; - int ret; - target_ulong sr, pgidx; - - pr = msr_pr; - ctx->eaddr = eaddr; - - sr = env->sr[eaddr >> 28]; - ctx->key = (((sr & 0x20000000) && (pr != 0)) || - ((sr & 0x40000000) && (pr == 0))) ? 1 : 0; - ds = sr & 0x80000000 ? 1 : 0; - ctx->nx = sr & 0x10000000 ? 1 : 0; - vsid = sr & 0x00FFFFFF; - target_page_bits = TARGET_PAGE_BITS; - qemu_log_mask(CPU_LOG_MMU, - "Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx - " nip=" TARGET_FMT_lx " lr=" TARGET_FMT_lx - " ir=%d dr=%d pr=%d %d t=%d\n", - eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir, - (int)msr_dr, pr != 0 ? 1 : 0, access_type == MMU_DATA_STORE, type); - pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits; - hash = vsid ^ pgidx; - ctx->ptem = (vsid << 7) | (pgidx >> 10); - - qemu_log_mask(CPU_LOG_MMU, - "pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n", - ctx->key, ds, ctx->nx, vsid); - ret = -1; - if (!ds) { - /* Check if instruction fetch is allowed, if needed */ - if (type != ACCESS_CODE || ctx->nx == 0) { - /* Page address translation */ - qemu_log_mask(CPU_LOG_MMU, "htab_base " TARGET_FMT_plx - " htab_mask " TARGET_FMT_plx - " hash " TARGET_FMT_plx "\n", - ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); - ctx->hash[0] = hash; - ctx->hash[1] = ~hash; - - /* Initialize real address with an invalid value */ - ctx->raddr = (hwaddr)-1ULL; - /* Software TLB search */ - ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); -#if defined(DUMP_PAGE_TABLES) - if (qemu_loglevel_mask(CPU_LOG_MMU)) { - CPUState *cs = env_cpu(env); - hwaddr curaddr; - uint32_t a0, a1, a2, a3; - - qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx - "\n", ppc_hash32_hpt_base(cpu), - ppc_hash32_hpt_mask(env) + 0x80); - for (curaddr = ppc_hash32_hpt_base(cpu); - curaddr < (ppc_hash32_hpt_base(cpu) - + ppc_hash32_hpt_mask(cpu) + 0x80); - curaddr += 16) { - a0 = ldl_phys(cs->as, curaddr); - a1 = ldl_phys(cs->as, curaddr + 4); - a2 = ldl_phys(cs->as, curaddr + 8); - a3 = ldl_phys(cs->as, curaddr + 12); - if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { - qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n", - curaddr, a0, a1, a2, a3); - } - } - } -#endif - } else { - qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); - ret = -3; - } - } else { - target_ulong sr; - - qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); - /* Direct-store segment : absolutely *BUGGY* for now */ - - /* - * Direct-store implies a 32-bit MMU. - * Check the Segment Register's bus unit ID (BUID). - */ - sr = env->sr[eaddr >> 28]; - if ((sr & 0x1FF00000) >> 20 == 0x07f) { - /* - * Memory-forced I/O controller interface access - * - * If T=1 and BUID=x'07F', the 601 performs a memory - * access to SR[28-31] LA[4-31], bypassing all protection - * mechanisms. - */ - ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF); - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - return 0; - } - - switch (type) { - case ACCESS_INT: - /* Integer load/store : only access allowed */ - break; - case ACCESS_CODE: - /* No code fetch is allowed in direct-store areas */ - return -4; - case ACCESS_FLOAT: - /* Floating point load/store */ - return -4; - case ACCESS_RES: - /* lwarx, ldarx or srwcx. */ - return -4; - case ACCESS_CACHE: - /* - * dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi - * - * Should make the instruction do no-op. As it already do - * no-op, it's quite easy :-) - */ - ctx->raddr = eaddr; - return 0; - case ACCESS_EXT: - /* eciwx or ecowx */ - return -4; - default: - qemu_log_mask(CPU_LOG_MMU, "ERROR: instruction should not need " - "address translation\n"); - return -4; - } - if ((access_type == MMU_DATA_STORE || ctx->key != 1) && - (access_type == MMU_DATA_LOAD || ctx->key != 0)) { - ctx->raddr = eaddr; - ret = 2; - } else { - ret = -2; - } - } - - return ret; -} - -/* Generic TLB check function for embedded PowerPC implementations */ -static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb, - hwaddr *raddrp, - target_ulong address, uint32_t pid, int ext, - int i) -{ - target_ulong mask; - - /* Check valid flag */ - if (!(tlb->prot & PAGE_VALID)) { - return -1; - } - mask = ~(tlb->size - 1); - LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx - " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN, - mask, (uint32_t)tlb->PID, tlb->prot); - /* Check PID */ - if (tlb->PID != 0 && tlb->PID != pid) { - return -1; - } - /* Check effective address */ - if ((address & mask) != tlb->EPN) { - return -1; - } - *raddrp = (tlb->RPN & mask) | (address & ~mask); - if (ext) { - /* Extend the physical address to 36 bits */ - *raddrp |= (uint64_t)(tlb->RPN & 0xF) << 32; - } - - return 0; -} - -#ifdef CONFIG_TCG -/* Generic TLB search function for PowerPC embedded implementations */ -static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, - uint32_t pid) -{ - ppcemb_tlb_t *tlb; - hwaddr raddr; - int i, ret; - - /* Default return value is no match */ - ret = -1; - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { - ret = i; - break; - } - } - - return ret; -} -#endif - -/* Helpers specific to PowerPC 40x implementations */ -static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) -{ - ppcemb_tlb_t *tlb; - int i; - - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - tlb->prot &= ~PAGE_VALID; - } - tlb_flush(env_cpu(env)); -} - -static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong address, - MMUAccessType access_type) -{ - ppcemb_tlb_t *tlb; - hwaddr raddr; - int i, ret, zsel, zpr, pr; - - ret = -1; - raddr = (hwaddr)-1ULL; - pr = msr_pr; - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - if (ppcemb_tlb_check(env, tlb, &raddr, address, - env->spr[SPR_40x_PID], 0, i) < 0) { - continue; - } - zsel = (tlb->attr >> 4) & 0xF; - zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3; - LOG_SWTLB("%s: TLB %d zsel %d zpr %d ty %d attr %08x\n", - __func__, i, zsel, zpr, access_type, tlb->attr); - /* Check execute enable bit */ - switch (zpr) { - case 0x2: - if (pr != 0) { - goto check_perms; - } - /* fall through */ - case 0x3: - /* All accesses granted */ - ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - ret = 0; - break; - case 0x0: - if (pr != 0) { - /* Raise Zone protection fault. */ - env->spr[SPR_40x_ESR] = 1 << 22; - ctx->prot = 0; - ret = -2; - break; - } - /* fall through */ - case 0x1: - check_perms: - /* Check from TLB entry */ - ctx->prot = tlb->prot; - ret = check_prot(ctx->prot, access_type); - if (ret == -2) { - env->spr[SPR_40x_ESR] = 0; - } - break; - } - if (ret >= 0) { - ctx->raddr = raddr; - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, - ret); - return 0; - } - } - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, raddr, ctx->prot, ret); - - return ret; -} - -void store_40x_sler(CPUPPCState *env, uint32_t val) -{ - /* XXX: TO BE FIXED */ - if (val != 0x00000000) { - cpu_abort(env_cpu(env), - "Little-endian regions are not supported by now\n"); - } - env->spr[SPR_405_SLER] = val; -} - -static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb, - hwaddr *raddr, int *prot, target_ulong address, - MMUAccessType access_type, int i) -{ - int prot2; - - if (ppcemb_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID], - !env->nb_pids, i) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID1] && - ppcemb_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID1], 0, i) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID2] && - ppcemb_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID2], 0, i) >= 0) { - goto found_tlb; - } - - LOG_SWTLB("%s: TLB entry not found\n", __func__); - return -1; - -found_tlb: - - if (msr_pr != 0) { - prot2 = tlb->prot & 0xF; - } else { - prot2 = (tlb->prot >> 4) & 0xF; - } - - /* Check the address space */ - if ((access_type == MMU_INST_FETCH ? msr_ir : msr_dr) != (tlb->attr & 1)) { - LOG_SWTLB("%s: AS doesn't match\n", __func__); - return -1; - } - - *prot = prot2; - if (prot2 & prot_for_access_type(access_type)) { - LOG_SWTLB("%s: good TLB!\n", __func__); - return 0; - } - - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); - return access_type == MMU_INST_FETCH ? -3 : -2; -} - -static int mmubooke_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong address, - MMUAccessType access_type) -{ - ppcemb_tlb_t *tlb; - hwaddr raddr; - int i, ret; - - ret = -1; - raddr = (hwaddr)-1ULL; - for (i = 0; i < env->nb_tlb; i++) { - tlb = &env->tlb.tlbe[i]; - ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, - access_type, i); - if (ret != -1) { - break; - } - } - - if (ret >= 0) { - ctx->raddr = raddr; - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, - ret); - } else { - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, raddr, ctx->prot, ret); - } - - return ret; -} - -#ifdef CONFIG_TCG -static void booke206_flush_tlb(CPUPPCState *env, int flags, - const int check_iprot) -{ - int tlb_size; - int i, j; - ppcmas_tlb_t *tlb = env->tlb.tlbm; - - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { - if (flags & (1 << i)) { - tlb_size = booke206_tlb_size(env, i); - for (j = 0; j < tlb_size; j++) { - if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { - tlb[j].mas1 &= ~MAS1_VALID; - } - } - } - tlb += booke206_tlb_size(env, i); - } - - tlb_flush(env_cpu(env)); -} -#endif - -static hwaddr booke206_tlb_to_page_size(CPUPPCState *env, - ppcmas_tlb_t *tlb) -{ - int tlbm_size; - - tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; - - return 1024ULL << tlbm_size; -} - -/* TLB check function for MAS based SoftTLBs */ -static int ppcmas_tlb_check(CPUPPCState *env, ppcmas_tlb_t *tlb, - hwaddr *raddrp, target_ulong address, - uint32_t pid) -{ - hwaddr mask; - uint32_t tlb_pid; - - if (!msr_cm) { - /* In 32bit mode we can only address 32bit EAs */ - address = (uint32_t)address; - } - - /* Check valid flag */ - if (!(tlb->mas1 & MAS1_VALID)) { - return -1; - } - - mask = ~(booke206_tlb_to_page_size(env, tlb) - 1); - LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%" - PRIx64 " mask=0x%" HWADDR_PRIx " MAS7_3=0x%" PRIx64 " MAS8=0x%" - PRIx32 "\n", __func__, address, pid, tlb->mas1, tlb->mas2, mask, - tlb->mas7_3, tlb->mas8); - - /* Check PID */ - tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT; - if (tlb_pid != 0 && tlb_pid != pid) { - return -1; - } - - /* Check effective address */ - if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) { - return -1; - } - - if (raddrp) { - *raddrp = (tlb->mas7_3 & mask) | (address & ~mask); - } - - return 0; -} - -static bool is_epid_mmu(int mmu_idx) -{ - return mmu_idx == PPC_TLB_EPID_STORE || mmu_idx == PPC_TLB_EPID_LOAD; -} - -static uint32_t mmubooke206_esr(int mmu_idx, MMUAccessType access_type) -{ - uint32_t esr = 0; - if (access_type == MMU_DATA_STORE) { - esr |= ESR_ST; - } - if (is_epid_mmu(mmu_idx)) { - esr |= ESR_EPID; - } - return esr; -} - -/* - * Get EPID register given the mmu_idx. If this is regular load, - * construct the EPID access bits from current processor state - * - * Get the effective AS and PR bits and the PID. The PID is returned - * only if EPID load is requested, otherwise the caller must detect - * the correct EPID. Return true if valid EPID is returned. - */ -static bool mmubooke206_get_as(CPUPPCState *env, - int mmu_idx, uint32_t *epid_out, - bool *as_out, bool *pr_out) -{ - if (is_epid_mmu(mmu_idx)) { - uint32_t epidr; - if (mmu_idx == PPC_TLB_EPID_STORE) { - epidr = env->spr[SPR_BOOKE_EPSC]; - } else { - epidr = env->spr[SPR_BOOKE_EPLC]; - } - *epid_out = (epidr & EPID_EPID) >> EPID_EPID_SHIFT; - *as_out = !!(epidr & EPID_EAS); - *pr_out = !!(epidr & EPID_EPR); - return true; - } else { - *as_out = msr_ds; - *pr_out = msr_pr; - return false; - } -} - -/* Check if the tlb found by hashing really matches */ -static int mmubooke206_check_tlb(CPUPPCState *env, ppcmas_tlb_t *tlb, - hwaddr *raddr, int *prot, - target_ulong address, - MMUAccessType access_type, int mmu_idx) -{ - int prot2 = 0; - uint32_t epid; - bool as, pr; - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); - - if (!use_epid) { - if (ppcmas_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID]) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID1] && - ppcmas_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID1]) >= 0) { - goto found_tlb; - } - - if (env->spr[SPR_BOOKE_PID2] && - ppcmas_tlb_check(env, tlb, raddr, address, - env->spr[SPR_BOOKE_PID2]) >= 0) { - goto found_tlb; - } - } else { - if (ppcmas_tlb_check(env, tlb, raddr, address, epid) >= 0) { - goto found_tlb; - } - } - - LOG_SWTLB("%s: TLB entry not found\n", __func__); - return -1; - -found_tlb: - - if (pr) { - if (tlb->mas7_3 & MAS3_UR) { - prot2 |= PAGE_READ; - } - if (tlb->mas7_3 & MAS3_UW) { - prot2 |= PAGE_WRITE; - } - if (tlb->mas7_3 & MAS3_UX) { - prot2 |= PAGE_EXEC; - } - } else { - if (tlb->mas7_3 & MAS3_SR) { - prot2 |= PAGE_READ; - } - if (tlb->mas7_3 & MAS3_SW) { - prot2 |= PAGE_WRITE; - } - if (tlb->mas7_3 & MAS3_SX) { - prot2 |= PAGE_EXEC; - } - } - - /* Check the address space and permissions */ - if (access_type == MMU_INST_FETCH) { - /* There is no way to fetch code using epid load */ - assert(!use_epid); - as = msr_ir; - } - - if (as != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) { - LOG_SWTLB("%s: AS doesn't match\n", __func__); - return -1; - } - - *prot = prot2; - if (prot2 & prot_for_access_type(access_type)) { - LOG_SWTLB("%s: good TLB!\n", __func__); - return 0; - } - - LOG_SWTLB("%s: no prot match: %x\n", __func__, prot2); - return access_type == MMU_INST_FETCH ? -3 : -2; -} - -static int mmubooke206_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong address, - MMUAccessType access_type, - int mmu_idx) -{ - ppcmas_tlb_t *tlb; - hwaddr raddr; - int i, j, ret; - - ret = -1; - raddr = (hwaddr)-1ULL; - - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { - int ways = booke206_tlb_ways(env, i); - - for (j = 0; j < ways; j++) { - tlb = booke206_get_tlbm(env, i, address, j); - if (!tlb) { - continue; - } - ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address, - access_type, mmu_idx); - if (ret != -1) { - goto found_tlb; - } - } - } - -found_tlb: - - if (ret >= 0) { - ctx->raddr = raddr; - LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, ctx->raddr, ctx->prot, - ret); - } else { - LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx - " %d %d\n", __func__, address, raddr, ctx->prot, ret); - } - - return ret; -} - -static const char *book3e_tsize_to_str[32] = { - "1K", "2K", "4K", "8K", "16K", "32K", "64K", "128K", "256K", "512K", - "1M", "2M", "4M", "8M", "16M", "32M", "64M", "128M", "256M", "512M", - "1G", "2G", "4G", "8G", "16G", "32G", "64G", "128G", "256G", "512G", - "1T", "2T" -}; - -static void mmubooke_dump_mmu(CPUPPCState *env) -{ - ppcemb_tlb_t *entry; - int i; - - if (kvm_enabled() && !env->kvm_sw_tlb) { - qemu_printf("Cannot access KVM TLB\n"); - return; - } - - qemu_printf("\nTLB:\n"); - qemu_printf("Effective Physical Size PID Prot " - "Attr\n"); - - entry = &env->tlb.tlbe[0]; - for (i = 0; i < env->nb_tlb; i++, entry++) { - hwaddr ea, pa; - target_ulong mask; - uint64_t size = (uint64_t)entry->size; - char size_buf[20]; - - /* Check valid flag */ - if (!(entry->prot & PAGE_VALID)) { - continue; - } - - mask = ~(entry->size - 1); - ea = entry->EPN & mask; - pa = entry->RPN & mask; - /* Extend the physical address to 36 bits */ - pa |= (hwaddr)(entry->RPN & 0xF) << 32; - if (size >= 1 * MiB) { - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "M", size / MiB); - } else { - snprintf(size_buf, sizeof(size_buf), "%3" PRId64 "k", size / KiB); - } - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %s %-5u %08x %08x\n", - (uint64_t)ea, (uint64_t)pa, size_buf, (uint32_t)entry->PID, - entry->prot, entry->attr); - } - -} - -static void mmubooke206_dump_one_tlb(CPUPPCState *env, int tlbn, int offset, - int tlbsize) -{ - ppcmas_tlb_t *entry; - int i; - - qemu_printf("\nTLB%d:\n", tlbn); - qemu_printf("Effective Physical Size TID TS SRWX" - " URWX WIMGE U0123\n"); - - entry = &env->tlb.tlbm[offset]; - for (i = 0; i < tlbsize; i++, entry++) { - hwaddr ea, pa, size; - int tsize; - - if (!(entry->mas1 & MAS1_VALID)) { - continue; - } - - tsize = (entry->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; - size = 1024ULL << tsize; - ea = entry->mas2 & ~(size - 1); - pa = entry->mas7_3 & ~(size - 1); - - qemu_printf("0x%016" PRIx64 " 0x%016" PRIx64 " %4s %-5u %1u S%c%c%c" - "U%c%c%c %c%c%c%c%c U%c%c%c%c\n", - (uint64_t)ea, (uint64_t)pa, - book3e_tsize_to_str[tsize], - (entry->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT, - (entry->mas1 & MAS1_TS) >> MAS1_TS_SHIFT, - entry->mas7_3 & MAS3_SR ? 'R' : '-', - entry->mas7_3 & MAS3_SW ? 'W' : '-', - entry->mas7_3 & MAS3_SX ? 'X' : '-', - entry->mas7_3 & MAS3_UR ? 'R' : '-', - entry->mas7_3 & MAS3_UW ? 'W' : '-', - entry->mas7_3 & MAS3_UX ? 'X' : '-', - entry->mas2 & MAS2_W ? 'W' : '-', - entry->mas2 & MAS2_I ? 'I' : '-', - entry->mas2 & MAS2_M ? 'M' : '-', - entry->mas2 & MAS2_G ? 'G' : '-', - entry->mas2 & MAS2_E ? 'E' : '-', - entry->mas7_3 & MAS3_U0 ? '0' : '-', - entry->mas7_3 & MAS3_U1 ? '1' : '-', - entry->mas7_3 & MAS3_U2 ? '2' : '-', - entry->mas7_3 & MAS3_U3 ? '3' : '-'); - } -} - -static void mmubooke206_dump_mmu(CPUPPCState *env) -{ - int offset = 0; - int i; - - if (kvm_enabled() && !env->kvm_sw_tlb) { - qemu_printf("Cannot access KVM TLB\n"); - return; - } +/* #define DEBUG_BATS */ +/* #define DEBUG_SOFTWARE_TLB */ +/* #define DUMP_PAGE_TABLES */ +/* #define FLUSH_ALL_TLBS */ - for (i = 0; i < BOOKE206_MAX_TLBN; i++) { - int size = booke206_tlb_size(env, i); +#ifdef DEBUG_SOFTWARE_TLB +# define LOG_SWTLB(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_SWTLB(...) do { } while (0) +#endif - if (size == 0) { - continue; - } +#ifdef DEBUG_BATS +# define LOG_BATS(...) qemu_log_mask(CPU_LOG_MMU, __VA_ARGS__) +#else +# define LOG_BATS(...) do { } while (0) +#endif - mmubooke206_dump_one_tlb(env, i, offset, size); - offset += size; - } -} +/*****************************************************************************/ +/* PowerPC MMU emulation */ -static void mmu6xx_dump_BATs(CPUPPCState *env, int type) +/* Software driven TLB helpers */ +static inline void ppc6xx_tlb_invalidate_all(CPUPPCState *env) { - target_ulong *BATlt, *BATut, *BATu, *BATl; - target_ulong BEPIl, BEPIu, bl; - int i; + ppc6xx_tlb_t *tlb; + int nr, max; - switch (type) { - case ACCESS_CODE: - BATlt = env->IBAT[1]; - BATut = env->IBAT[0]; - break; - default: - BATlt = env->DBAT[1]; - BATut = env->DBAT[0]; - break; + /* LOG_SWTLB("Invalidate all TLBs\n"); */ + /* Invalidate all defined software TLB */ + max = env->nb_tlb; + if (env->id_tlbs == 1) { + max *= 2; } - - for (i = 0; i < env->nb_BATs; i++) { - BATu = &BATut[i]; - BATl = &BATlt[i]; - BEPIu = *BATu & 0xF0000000; - BEPIl = *BATu & 0x0FFE0000; - bl = (*BATu & 0x00001FFC) << 15; - qemu_printf("%s BAT%d BATu " TARGET_FMT_lx - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " - TARGET_FMT_lx " " TARGET_FMT_lx "\n", - type == ACCESS_CODE ? "code" : "data", i, - *BATu, *BATl, BEPIu, BEPIl, bl); + for (nr = 0; nr < max; nr++) { + tlb = &env->tlb.tlb6[nr]; + pte_invalidate(&tlb->pte0); } + tlb_flush(env_cpu(env)); } -static void mmu6xx_dump_mmu(CPUPPCState *env) +static inline void ppc6xx_tlb_invalidate_virt2(CPUPPCState *env, + target_ulong eaddr, + int is_code, int match_epn) { - PowerPCCPU *cpu = env_archcpu(env); +#if !defined(FLUSH_ALL_TLBS) + CPUState *cs = env_cpu(env); ppc6xx_tlb_t *tlb; - target_ulong sr; - int type, way, entry, i; - - qemu_printf("HTAB base = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_base(cpu)); - qemu_printf("HTAB mask = 0x%"HWADDR_PRIx"\n", ppc_hash32_hpt_mask(cpu)); - - qemu_printf("\nSegment registers:\n"); - for (i = 0; i < 32; i++) { - sr = env->sr[i]; - if (sr & 0x80000000) { - qemu_printf("%02d T=%d Ks=%d Kp=%d BUID=0x%03x " - "CNTLR_SPEC=0x%05x\n", i, - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, - sr & 0x20000000 ? 1 : 0, (uint32_t)((sr >> 20) & 0x1FF), - (uint32_t)(sr & 0xFFFFF)); - } else { - qemu_printf("%02d T=%d Ks=%d Kp=%d N=%d VSID=0x%06x\n", i, - sr & 0x80000000 ? 1 : 0, sr & 0x40000000 ? 1 : 0, - sr & 0x20000000 ? 1 : 0, sr & 0x10000000 ? 1 : 0, - (uint32_t)(sr & 0x00FFFFFF)); - } - } - - qemu_printf("\nBATs:\n"); - mmu6xx_dump_BATs(env, ACCESS_INT); - mmu6xx_dump_BATs(env, ACCESS_CODE); - - if (env->id_tlbs != 1) { - qemu_printf("ERROR: 6xx MMU should have separated TLB" - " for code and data\n"); - } + int way, nr; - qemu_printf("\nTLBs [EPN EPN + SIZE]\n"); - - for (type = 0; type < 2; type++) { - for (way = 0; way < env->nb_ways; way++) { - for (entry = env->nb_tlb * type + env->tlb_per_way * way; - entry < (env->nb_tlb * type + env->tlb_per_way * (way + 1)); - entry++) { - - tlb = &env->tlb.tlb6[entry]; - qemu_printf("%s TLB %02d/%02d way:%d %s [" - TARGET_FMT_lx " " TARGET_FMT_lx "]\n", - type ? "code" : "data", entry % env->nb_tlb, - env->nb_tlb, way, - pte_is_valid(tlb->pte0) ? "valid" : "inval", - tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE); - } + /* Invalidate ITLB + DTLB, all ways */ + for (way = 0; way < env->nb_ways; way++) { + nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code); + tlb = &env->tlb.tlb6[nr]; + if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) { + LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr, + env->nb_tlb, eaddr); + pte_invalidate(&tlb->pte0); + tlb_flush_page(cs, tlb->EPN); } } -} - -void dump_mmu(CPUPPCState *env) -{ - switch (env->mmu_model) { - case POWERPC_MMU_BOOKE: - mmubooke_dump_mmu(env); - break; - case POWERPC_MMU_BOOKE206: - mmubooke206_dump_mmu(env); - break; - case POWERPC_MMU_SOFT_6xx: - case POWERPC_MMU_SOFT_74xx: - mmu6xx_dump_mmu(env); - break; -#if defined(TARGET_PPC64) - case POWERPC_MMU_64B: - case POWERPC_MMU_2_03: - case POWERPC_MMU_2_06: - case POWERPC_MMU_2_07: - dump_slb(env_archcpu(env)); - break; - case POWERPC_MMU_3_00: - if (ppc64_v3_radix(env_archcpu(env))) { - qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU is unsupported\n", - __func__); - } else { - dump_slb(env_archcpu(env)); - } - break; +#else + /* XXX: PowerPC specification say this is valid as well */ + ppc6xx_tlb_invalidate_all(env); #endif - default: - qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__); - } } -static int check_physical(CPUPPCState *env, mmu_ctx_t *ctx, target_ulong eaddr, - MMUAccessType access_type) +static inline void ppc6xx_tlb_invalidate_virt(CPUPPCState *env, + target_ulong eaddr, int is_code) { - int in_plb, ret; - - ctx->raddr = eaddr; - ctx->prot = PAGE_READ | PAGE_EXEC; - ret = 0; - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - case POWERPC_MMU_SOFT_74xx: - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_REAL: - case POWERPC_MMU_BOOKE: - ctx->prot |= PAGE_WRITE; - break; - - case POWERPC_MMU_SOFT_4xx_Z: - if (unlikely(msr_pe != 0)) { - /* - * 403 family add some particular protections, using - * PBL/PBU registers for accesses with no translation. - */ - in_plb = - /* Check PLB validity */ - (env->pb[0] < env->pb[1] && - /* and address in plb area */ - eaddr >= env->pb[0] && eaddr < env->pb[1]) || - (env->pb[2] < env->pb[3] && - eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0; - if (in_plb ^ msr_px) { - /* Access in protected area */ - if (access_type == MMU_DATA_STORE) { - /* Access is not allowed */ - ret = -2; - } - } else { - /* Read-write access is allowed */ - ctx->prot |= PAGE_WRITE; - } - } - break; - - default: - /* Caller's checks mean we should never get here for other models */ - abort(); - return -1; - } - - return ret; + ppc6xx_tlb_invalidate_virt2(env, eaddr, is_code, 0); } -static int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, - MMUAccessType access_type, int type, - int mmu_idx) +static void ppc6xx_tlb_store(CPUPPCState *env, target_ulong EPN, int way, + int is_code, target_ulong pte0, target_ulong pte1) { - int ret = -1; - bool real_mode = (type == ACCESS_CODE && msr_ir == 0) - || (type != ACCESS_CODE && msr_dr == 0); - - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - case POWERPC_MMU_SOFT_74xx: - if (real_mode) { - ret = check_physical(env, ctx, eaddr, access_type); - } else { - /* Try to find a BAT */ - if (env->nb_BATs != 0) { - ret = get_bat_6xx_tlb(env, ctx, eaddr, access_type); - } - if (ret < 0) { - /* We didn't match any BAT entry or don't have BATs */ - ret = get_segment_6xx_tlb(env, ctx, eaddr, access_type, type); - } - } - break; - - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_SOFT_4xx_Z: - if (real_mode) { - ret = check_physical(env, ctx, eaddr, access_type); - } else { - ret = mmu40x_get_physical_address(env, ctx, eaddr, access_type); - } - break; - case POWERPC_MMU_BOOKE: - ret = mmubooke_get_physical_address(env, ctx, eaddr, access_type); - break; - case POWERPC_MMU_BOOKE206: - ret = mmubooke206_get_physical_address(env, ctx, eaddr, access_type, - mmu_idx); - break; - case POWERPC_MMU_MPC8xx: - /* XXX: TODO */ - cpu_abort(env_cpu(env), "MPC8xx MMU model is not implemented\n"); - break; - case POWERPC_MMU_REAL: - if (real_mode) { - ret = check_physical(env, ctx, eaddr, access_type); - } else { - cpu_abort(env_cpu(env), - "PowerPC in real mode do not do any translation\n"); - } - return -1; - default: - cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); - return -1; - } - - return ret; -} + ppc6xx_tlb_t *tlb; + int nr; -#ifdef CONFIG_TCG -static int get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, - target_ulong eaddr, MMUAccessType access_type, - int type) -{ - return get_physical_address_wtlb(env, ctx, eaddr, access_type, type, 0); + nr = ppc6xx_tlb_getnum(env, EPN, way, is_code); + tlb = &env->tlb.tlb6[nr]; + LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx + " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1); + /* Invalidate any pending reference in QEMU for this virtual address */ + ppc6xx_tlb_invalidate_virt2(env, EPN, is_code, 1); + tlb->pte0 = pte0; + tlb->pte1 = pte1; + tlb->EPN = EPN; + /* Store last way for LRU mechanism */ + env->last_way = way; } -#endif -hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) +/* Generic TLB search function for PowerPC embedded implementations */ +static int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, + uint32_t pid) { - PowerPCCPU *cpu = POWERPC_CPU(cs); - CPUPPCState *env = &cpu->env; - mmu_ctx_t ctx; - - switch (env->mmu_model) { -#if defined(TARGET_PPC64) - case POWERPC_MMU_64B: - case POWERPC_MMU_2_03: - case POWERPC_MMU_2_06: - case POWERPC_MMU_2_07: - return ppc_hash64_get_phys_page_debug(cpu, addr); - case POWERPC_MMU_3_00: - return ppc64_v3_get_phys_page_debug(cpu, addr); -#endif - - case POWERPC_MMU_32B: - case POWERPC_MMU_601: - return ppc_hash32_get_phys_page_debug(cpu, addr); - - default: - ; - } - - if (unlikely(get_physical_address(env, &ctx, addr, MMU_DATA_LOAD, - ACCESS_INT) != 0)) { + ppcemb_tlb_t *tlb; + hwaddr raddr; + int i, ret; - /* - * Some MMUs have separate TLBs for code and data. If we only - * try an ACCESS_INT, we may not be able to read instructions - * mapped by code TLBs, so we also try a ACCESS_CODE. - */ - if (unlikely(get_physical_address(env, &ctx, addr, MMU_INST_FETCH, - ACCESS_CODE) != 0)) { - return -1; + /* Default return value is no match */ + ret = -1; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) { + ret = i; + break; } } - return ctx.raddr & TARGET_PAGE_MASK; + return ret; } -static void booke206_update_mas_tlb_miss(CPUPPCState *env, target_ulong address, - MMUAccessType access_type, int mmu_idx) +/* Helpers specific to PowerPC 40x implementations */ +static inline void ppc4xx_tlb_invalidate_all(CPUPPCState *env) { - uint32_t epid; - bool as, pr; - uint32_t missed_tid = 0; - bool use_epid = mmubooke206_get_as(env, mmu_idx, &epid, &as, &pr); - - if (access_type == MMU_INST_FETCH) { - as = msr_ir; - } - env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK; - env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK; - env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK; - env->spr[SPR_BOOKE_MAS3] = 0; - env->spr[SPR_BOOKE_MAS6] = 0; - env->spr[SPR_BOOKE_MAS7] = 0; - - /* AS */ - if (as) { - env->spr[SPR_BOOKE_MAS1] |= MAS1_TS; - env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS; - } - - env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID; - env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK; + ppcemb_tlb_t *tlb; + int i; - if (!use_epid) { - switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) { - case MAS4_TIDSELD_PID0: - missed_tid = env->spr[SPR_BOOKE_PID]; - break; - case MAS4_TIDSELD_PID1: - missed_tid = env->spr[SPR_BOOKE_PID1]; - break; - case MAS4_TIDSELD_PID2: - missed_tid = env->spr[SPR_BOOKE_PID2]; - break; - } - env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16; - } else { - missed_tid = epid; - env->spr[SPR_BOOKE_MAS6] |= missed_tid << 16; + for (i = 0; i < env->nb_tlb; i++) { + tlb = &env->tlb.tlbe[i]; + tlb->prot &= ~PAGE_VALID; } - env->spr[SPR_BOOKE_MAS1] |= (missed_tid << MAS1_TID_SHIFT); - - - /* next victim logic */ - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT; - env->last_way++; - env->last_way &= booke206_tlb_ways(env, 0) - 1; - env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT; + tlb_flush(env_cpu(env)); } -/* Perform address translation */ -static int cpu_ppc_handle_mmu_fault(CPUPPCState *env, target_ulong address, - MMUAccessType access_type, int mmu_idx) +static void booke206_flush_tlb(CPUPPCState *env, int flags, + const int check_iprot) { - CPUState *cs = env_cpu(env); - PowerPCCPU *cpu = POWERPC_CPU(cs); - mmu_ctx_t ctx; - int type; - int ret = 0; + int tlb_size; + int i, j; + ppcmas_tlb_t *tlb = env->tlb.tlbm; - if (access_type == MMU_INST_FETCH) { - /* code access */ - type = ACCESS_CODE; - } else { - /* data access */ - type = env->access_type; - } - ret = get_physical_address_wtlb(env, &ctx, address, access_type, - type, mmu_idx); - if (ret == 0) { - tlb_set_page(cs, address & TARGET_PAGE_MASK, - ctx.raddr & TARGET_PAGE_MASK, ctx.prot, - mmu_idx, TARGET_PAGE_SIZE); - ret = 0; - } else if (ret < 0) { - LOG_MMU_STATE(cs); - if (type == ACCESS_CODE) { - switch (ret) { - case -1: - /* No matches in page tables or TLB */ - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - cs->exception_index = POWERPC_EXCP_IFTLB; - env->error_code = 1 << 18; - env->spr[SPR_IMISS] = address; - env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem; - goto tlb_miss; - case POWERPC_MMU_SOFT_74xx: - cs->exception_index = POWERPC_EXCP_IFTLB; - goto tlb_miss_74xx; - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_SOFT_4xx_Z: - cs->exception_index = POWERPC_EXCP_ITLB; - env->error_code = 0; - env->spr[SPR_40x_DEAR] = address; - env->spr[SPR_40x_ESR] = 0x00000000; - break; - case POWERPC_MMU_BOOKE206: - booke206_update_mas_tlb_miss(env, address, 2, mmu_idx); - /* fall through */ - case POWERPC_MMU_BOOKE: - cs->exception_index = POWERPC_EXCP_ITLB; - env->error_code = 0; - env->spr[SPR_BOOKE_DEAR] = address; - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, MMU_DATA_LOAD); - return -1; - case POWERPC_MMU_MPC8xx: - /* XXX: TODO */ - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); - break; - case POWERPC_MMU_REAL: - cpu_abort(cs, "PowerPC in real mode should never raise " - "any MMU exceptions\n"); - return -1; - default: - cpu_abort(cs, "Unknown or invalid MMU model\n"); - return -1; - } - break; - case -2: - /* Access rights violation */ - cs->exception_index = POWERPC_EXCP_ISI; - env->error_code = 0x08000000; - break; - case -3: - /* No execute protection violation */ - if ((env->mmu_model == POWERPC_MMU_BOOKE) || - (env->mmu_model == POWERPC_MMU_BOOKE206)) { - env->spr[SPR_BOOKE_ESR] = 0x00000000; - } - cs->exception_index = POWERPC_EXCP_ISI; - env->error_code = 0x10000000; - break; - case -4: - /* Direct store exception */ - /* No code fetch is allowed in direct-store areas */ - cs->exception_index = POWERPC_EXCP_ISI; - env->error_code = 0x10000000; - break; - } - } else { - switch (ret) { - case -1: - /* No matches in page tables or TLB */ - switch (env->mmu_model) { - case POWERPC_MMU_SOFT_6xx: - if (access_type == MMU_DATA_STORE) { - cs->exception_index = POWERPC_EXCP_DSTLB; - env->error_code = 1 << 16; - } else { - cs->exception_index = POWERPC_EXCP_DLTLB; - env->error_code = 0; - } - env->spr[SPR_DMISS] = address; - env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem; - tlb_miss: - env->error_code |= ctx.key << 19; - env->spr[SPR_HASH1] = ppc_hash32_hpt_base(cpu) + - get_pteg_offset32(cpu, ctx.hash[0]); - env->spr[SPR_HASH2] = ppc_hash32_hpt_base(cpu) + - get_pteg_offset32(cpu, ctx.hash[1]); - break; - case POWERPC_MMU_SOFT_74xx: - if (access_type == MMU_DATA_STORE) { - cs->exception_index = POWERPC_EXCP_DSTLB; - } else { - cs->exception_index = POWERPC_EXCP_DLTLB; - } - tlb_miss_74xx: - /* Implement LRU algorithm */ - env->error_code = ctx.key << 19; - env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) | - ((env->last_way + 1) & (env->nb_ways - 1)); - env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem; - break; - case POWERPC_MMU_SOFT_4xx: - case POWERPC_MMU_SOFT_4xx_Z: - cs->exception_index = POWERPC_EXCP_DTLB; - env->error_code = 0; - env->spr[SPR_40x_DEAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_40x_ESR] = 0x00800000; - } else { - env->spr[SPR_40x_ESR] = 0x00000000; - } - break; - case POWERPC_MMU_MPC8xx: - /* XXX: TODO */ - cpu_abort(cs, "MPC8xx MMU model is not implemented\n"); - break; - case POWERPC_MMU_BOOKE206: - booke206_update_mas_tlb_miss(env, address, access_type, mmu_idx); - /* fall through */ - case POWERPC_MMU_BOOKE: - cs->exception_index = POWERPC_EXCP_DTLB; - env->error_code = 0; - env->spr[SPR_BOOKE_DEAR] = address; - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); - return -1; - case POWERPC_MMU_REAL: - cpu_abort(cs, "PowerPC in real mode should never raise " - "any MMU exceptions\n"); - return -1; - default: - cpu_abort(cs, "Unknown or invalid MMU model\n"); - return -1; - } - break; - case -2: - /* Access rights violation */ - cs->exception_index = POWERPC_EXCP_DSI; - env->error_code = 0; - if (env->mmu_model == POWERPC_MMU_SOFT_4xx - || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) { - env->spr[SPR_40x_DEAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_40x_ESR] |= 0x00800000; - } - } else if ((env->mmu_model == POWERPC_MMU_BOOKE) || - (env->mmu_model == POWERPC_MMU_BOOKE206)) { - env->spr[SPR_BOOKE_DEAR] = address; - env->spr[SPR_BOOKE_ESR] = mmubooke206_esr(mmu_idx, access_type); - } else { - env->spr[SPR_DAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_DSISR] = 0x0A000000; - } else { - env->spr[SPR_DSISR] = 0x08000000; - } - } - break; - case -4: - /* Direct store exception */ - switch (type) { - case ACCESS_FLOAT: - /* Floating point load/store */ - cs->exception_index = POWERPC_EXCP_ALIGN; - env->error_code = POWERPC_EXCP_ALIGN_FP; - env->spr[SPR_DAR] = address; - break; - case ACCESS_RES: - /* lwarx, ldarx or stwcx. */ - cs->exception_index = POWERPC_EXCP_DSI; - env->error_code = 0; - env->spr[SPR_DAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_DSISR] = 0x06000000; - } else { - env->spr[SPR_DSISR] = 0x04000000; - } - break; - case ACCESS_EXT: - /* eciwx or ecowx */ - cs->exception_index = POWERPC_EXCP_DSI; - env->error_code = 0; - env->spr[SPR_DAR] = address; - if (access_type == MMU_DATA_STORE) { - env->spr[SPR_DSISR] = 0x06100000; - } else { - env->spr[SPR_DSISR] = 0x04100000; - } - break; - default: - printf("DSI: invalid exception (%d)\n", ret); - cs->exception_index = POWERPC_EXCP_PROGRAM; - env->error_code = - POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL; - env->spr[SPR_DAR] = address; - break; + for (i = 0; i < BOOKE206_MAX_TLBN; i++) { + if (flags & (1 << i)) { + tlb_size = booke206_tlb_size(env, i); + for (j = 0; j < tlb_size; j++) { + if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) { + tlb[j].mas1 &= ~MAS1_VALID; } - break; } } - ret = 1; + tlb += booke206_tlb_size(env, i); } - return ret; + tlb_flush(env_cpu(env)); } -#ifdef CONFIG_TCG + /*****************************************************************************/ /* BATs management */ #if !defined(FLUSH_ALL_TLBS) @@ -1952,9 +372,7 @@ void helper_store_601_batl(CPUPPCState *env, uint32_t nr, target_ulong value) #endif } } -#endif -#ifdef CONFIG_TCG /*****************************************************************************/ /* TLB management */ void ppc_tlb_invalidate_all(CPUPPCState *env) @@ -1998,9 +416,7 @@ void ppc_tlb_invalidate_all(CPUPPCState *env) break; } } -#endif -#ifdef CONFIG_TCG void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) { #if !defined(FLUSH_ALL_TLBS) @@ -2942,30 +1358,6 @@ void helper_check_tlb_flush_global(CPUPPCState *env) { check_tlb_flush(env, true); } -#endif /* CONFIG_TCG */ /*****************************************************************************/ -bool ppc_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, - bool probe, uintptr_t retaddr) -{ - PowerPCCPU *cpu = POWERPC_CPU(cs); - PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); - CPUPPCState *env = &cpu->env; - int ret; - - if (pcc->handle_mmu_fault) { - ret = pcc->handle_mmu_fault(cpu, addr, access_type, mmu_idx); - } else { - ret = cpu_ppc_handle_mmu_fault(env, addr, access_type, mmu_idx); - } - if (unlikely(ret != 0)) { - if (probe) { - return false; - } - raise_exception_err_ra(env, cs->exception_index, env->error_code, - retaddr); - } - return true; -} From patchwork Wed Jun 2 19:26:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Mateus Martins Araujo e Castro X-Patchwork-Id: 12295615 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEA3CC47083 for ; Wed, 2 Jun 2021 19:33:06 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9342E613E7 for ; Wed, 2 Jun 2021 19:33:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9342E613E7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=eldorado.org.br Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38564 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWbx-0003u8-LP for qemu-devel@archiver.kernel.org; Wed, 02 Jun 2021 15:33:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38232) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loWWI-0004wX-AP; Wed, 02 Jun 2021 15:27:14 -0400 Received: from [201.28.113.2] (port=39068 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWWF-0002aI-Vw; Wed, 02 Jun 2021 15:27:13 -0400 Received: from power9a ([10.10.71.235]) by outlook.eldorado.org.br with Microsoft SMTPSVC(8.5.9600.16384); Wed, 2 Jun 2021 16:26:28 -0300 Received: from eldorado.org.br (unknown [10.10.71.235]) by power9a (Postfix) with ESMTP id B0A9980148C; Wed, 2 Jun 2021 16:26:28 -0300 (-03) From: "Lucas Mateus Castro (alqotel)" To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [RFC PATCH 3/4] target/ppc: moved ppc_store_sdr1 to mmu_common.c Date: Wed, 2 Jun 2021 16:26:03 -0300 Message-Id: <20210602192604.90846-4-lucas.araujo@eldorado.org.br> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> References: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> X-OriginalArrivalTime: 02 Jun 2021 19:26:28.0866 (UTC) FILETIME=[2F9CEE20:01D757E5] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass client-ip=201.28.113.2; envelope-from=lucas.araujo@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: "Lucas Mateus Castro \(alqotel\)" , luis.pires@eldorado.org.br, fernando.valle@eldorado.org.br, matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Moved ppc_store_sdr1 to mmu_common.c as it was originally in mmu_helper.c. Signed-off-by: Lucas Mateus Castro (alqotel) Reviewed-by: David Gibson --- Talking to billionai he commented that ppc_store_sdr1 was at first in mmu_helper.c and was moved as part of the patches to enable the disable-tcg option, now it's being moved back to a file that will be compiled in a !TCG build. --- target/ppc/cpu.c | 28 ---------------------------- target/ppc/mmu_common.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 28 insertions(+), 28 deletions(-) diff --git a/target/ppc/cpu.c b/target/ppc/cpu.c index c8e87e30f1..5ff00a6c01 100644 --- a/target/ppc/cpu.c +++ b/target/ppc/cpu.c @@ -66,34 +66,6 @@ uint32_t ppc_get_vscr(CPUPPCState *env) return env->vscr | (sat << VSCR_SAT); } -#ifdef CONFIG_SOFTMMU -void ppc_store_sdr1(CPUPPCState *env, target_ulong value) -{ - PowerPCCPU *cpu = env_archcpu(env); - qemu_log_mask(CPU_LOG_MMU, "%s: " TARGET_FMT_lx "\n", __func__, value); - assert(!cpu->vhyp); -#if defined(TARGET_PPC64) - if (mmu_is_64bit(env->mmu_model)) { - target_ulong sdr_mask = SDR_64_HTABORG | SDR_64_HTABSIZE; - target_ulong htabsize = value & SDR_64_HTABSIZE; - - if (value & ~sdr_mask) { - qemu_log_mask(LOG_GUEST_ERROR, "Invalid bits 0x"TARGET_FMT_lx - " set in SDR1", value & ~sdr_mask); - value &= sdr_mask; - } - if (htabsize > 28) { - qemu_log_mask(LOG_GUEST_ERROR, "Invalid HTABSIZE 0x" TARGET_FMT_lx - " stored in SDR1", htabsize); - return; - } - } -#endif /* defined(TARGET_PPC64) */ - /* FIXME: Should check for valid HTABMASK values in 32-bit case */ - env->spr[SPR_SDR1] = value; -} -#endif /* CONFIG_SOFTMMU */ - /* GDBstub can read and write MSR... */ void ppc_store_msr(CPUPPCState *env, target_ulong value) { diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c index d95399d67f..50b8799d71 100644 --- a/target/ppc/mmu_common.c +++ b/target/ppc/mmu_common.c @@ -58,6 +58,34 @@ # define LOG_BATS(...) do { } while (0) #endif +#ifdef CONFIG_SOFTMMU +void ppc_store_sdr1(CPUPPCState *env, target_ulong value) +{ + PowerPCCPU *cpu = env_archcpu(env); + qemu_log_mask(CPU_LOG_MMU, "%s: " TARGET_FMT_lx "\n", __func__, value); + assert(!cpu->vhyp); +#if defined(TARGET_PPC64) + if (mmu_is_64bit(env->mmu_model)) { + target_ulong sdr_mask = SDR_64_HTABORG | SDR_64_HTABSIZE; + target_ulong htabsize = value & SDR_64_HTABSIZE; + + if (value & ~sdr_mask) { + qemu_log_mask(LOG_GUEST_ERROR, "Invalid bits 0x"TARGET_FMT_lx + " set in SDR1", value & ~sdr_mask); + value &= sdr_mask; + } + if (htabsize > 28) { + qemu_log_mask(LOG_GUEST_ERROR, "Invalid HTABSIZE 0x" TARGET_FMT_lx + " stored in SDR1", htabsize); + return; + } + } +#endif /* defined(TARGET_PPC64) */ + /* FIXME: Should check for valid HTABMASK values in 32-bit case */ + env->spr[SPR_SDR1] = value; +} +#endif /* CONFIG_SOFTMMU */ + /*****************************************************************************/ /* PowerPC MMU emulation */ From patchwork Wed Jun 2 19:26:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Mateus Martins Araujo e Castro X-Patchwork-Id: 12295617 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0014EC47083 for ; Wed, 2 Jun 2021 19:34:59 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6B530613F5 for ; Wed, 2 Jun 2021 19:34:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B530613F5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=eldorado.org.br Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43174 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWdm-0006y5-BQ for qemu-devel@archiver.kernel.org; Wed, 02 Jun 2021 15:34:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38244) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loWWL-00055i-NS; Wed, 02 Jun 2021 15:27:17 -0400 Received: from [201.28.113.2] (port=39068 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loWWJ-0002aI-Eo; Wed, 02 Jun 2021 15:27:17 -0400 Received: from power9a ([10.10.71.235]) by outlook.eldorado.org.br with Microsoft SMTPSVC(8.5.9600.16384); Wed, 2 Jun 2021 16:26:29 -0300 Received: from eldorado.org.br (unknown [10.10.71.235]) by power9a (Postfix) with ESMTP id ABA1A80148C; Wed, 2 Jun 2021 16:26:29 -0300 (-03) From: "Lucas Mateus Castro (alqotel)" To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [RFC PATCH 4/4] target/ppc: Moved helpers to mmu_helper.c Date: Wed, 2 Jun 2021 16:26:04 -0300 Message-Id: <20210602192604.90846-5-lucas.araujo@eldorado.org.br> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> References: <20210602192604.90846-1-lucas.araujo@eldorado.org.br> X-OriginalArrivalTime: 02 Jun 2021 19:26:29.0835 (UTC) FILETIME=[3030C9B0:01D757E5] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass client-ip=201.28.113.2; envelope-from=lucas.araujo@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: "Lucas Mateus Castro \(alqotel\)" , luis.pires@eldorado.org.br, fernando.valle@eldorado.org.br, matheus.ferst@eldorado.org.br, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Moved helpers from target/ppc/mmu-hash64.c to target/ppc/mmu_helpers.c and removed #ifdef CONFIG_TCG and #include exec/helper-proto.h from mmu-hash64.c Signed-off-by: Lucas Mateus Castro (alqotel) --- I had to turn slb_lookup in a non static function as it had calls from the code that was moved to mmu_helper.c and from the code that wasn't moved. Also perhaps it would be best to create a new file to move the mmu-hash functions that are not compiled in !TCG, personally I thought that moving the helpers in mmu-hash64 to mmu_helpers the better choice. --- target/ppc/mmu-hash64.c | 219 +--------------------------------------- target/ppc/mmu-hash64.h | 1 + target/ppc/mmu_helper.c | 209 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 211 insertions(+), 218 deletions(-) diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c index 708dffc31b..d2ded71107 100644 --- a/target/ppc/mmu-hash64.c +++ b/target/ppc/mmu-hash64.c @@ -32,10 +32,6 @@ #include "mmu-book3s-v3.h" #include "helper_regs.h" -#ifdef CONFIG_TCG -#include "exec/helper-proto.h" -#endif - /* #define DEBUG_SLB */ #ifdef DEBUG_SLB @@ -48,7 +44,7 @@ * SLB handling */ -static ppc_slb_t *slb_lookup(PowerPCCPU *cpu, target_ulong eaddr) +ppc_slb_t *slb_lookup(PowerPCCPU *cpu, target_ulong eaddr) { CPUPPCState *env = &cpu->env; uint64_t esid_256M, esid_1T; @@ -100,114 +96,6 @@ void dump_slb(PowerPCCPU *cpu) } } -#ifdef CONFIG_TCG -void helper_slbia(CPUPPCState *env, uint32_t ih) -{ - PowerPCCPU *cpu = env_archcpu(env); - int starting_entry; - int n; - - /* - * slbia must always flush all TLB (which is equivalent to ERAT in ppc - * architecture). Matching on SLB_ESID_V is not good enough, because slbmte - * can overwrite a valid SLB without flushing its lookaside information. - * - * It would be possible to keep the TLB in synch with the SLB by flushing - * when a valid entry is overwritten by slbmte, and therefore slbia would - * not have to flush unless it evicts a valid SLB entry. However it is - * expected that slbmte is more common than slbia, and slbia is usually - * going to evict valid SLB entries, so that tradeoff is unlikely to be a - * good one. - * - * ISA v2.05 introduced IH field with values 0,1,2,6. These all invalidate - * the same SLB entries (everything but entry 0), but differ in what - * "lookaside information" is invalidated. TCG can ignore this and flush - * everything. - * - * ISA v3.0 introduced additional values 3,4,7, which change what SLBs are - * invalidated. - */ - - env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; - - starting_entry = 1; /* default for IH=0,1,2,6 */ - - if (env->mmu_model == POWERPC_MMU_3_00) { - switch (ih) { - case 0x7: - /* invalidate no SLBs, but all lookaside information */ - return; - - case 0x3: - case 0x4: - /* also considers SLB entry 0 */ - starting_entry = 0; - break; - - case 0x5: - /* treat undefined values as ih==0, and warn */ - qemu_log_mask(LOG_GUEST_ERROR, - "slbia undefined IH field %u.\n", ih); - break; - - default: - /* 0,1,2,6 */ - break; - } - } - - for (n = starting_entry; n < cpu->hash64_opts->slb_size; n++) { - ppc_slb_t *slb = &env->slb[n]; - - if (!(slb->esid & SLB_ESID_V)) { - continue; - } - if (env->mmu_model == POWERPC_MMU_3_00) { - if (ih == 0x3 && (slb->vsid & SLB_VSID_C) == 0) { - /* preserves entries with a class value of 0 */ - continue; - } - } - - slb->esid &= ~SLB_ESID_V; - } -} - -static void __helper_slbie(CPUPPCState *env, target_ulong addr, - target_ulong global) -{ - PowerPCCPU *cpu = env_archcpu(env); - ppc_slb_t *slb; - - slb = slb_lookup(cpu, 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 - */ - env->tlb_need_flush |= - (global == false ? TLB_NEED_LOCAL_FLUSH : TLB_NEED_GLOBAL_FLUSH); - } -} - -void helper_slbie(CPUPPCState *env, target_ulong addr) -{ - __helper_slbie(env, addr, false); -} - -void helper_slbieg(CPUPPCState *env, target_ulong addr) -{ - __helper_slbie(env, addr, true); -} -#endif - int ppc_store_slb(PowerPCCPU *cpu, target_ulong slot, target_ulong esid, target_ulong vsid) { @@ -260,102 +148,6 @@ int ppc_store_slb(PowerPCCPU *cpu, target_ulong slot, return 0; } -#ifdef CONFIG_TCG -static int ppc_load_slb_esid(PowerPCCPU *cpu, target_ulong rb, - target_ulong *rt) -{ - CPUPPCState *env = &cpu->env; - int slot = rb & 0xfff; - ppc_slb_t *slb = &env->slb[slot]; - - if (slot >= cpu->hash64_opts->slb_size) { - return -1; - } - - *rt = slb->esid; - return 0; -} - -static int ppc_load_slb_vsid(PowerPCCPU *cpu, target_ulong rb, - target_ulong *rt) -{ - CPUPPCState *env = &cpu->env; - int slot = rb & 0xfff; - ppc_slb_t *slb = &env->slb[slot]; - - if (slot >= cpu->hash64_opts->slb_size) { - return -1; - } - - *rt = slb->vsid; - return 0; -} - -static int ppc_find_slb_vsid(PowerPCCPU *cpu, target_ulong rb, - target_ulong *rt) -{ - CPUPPCState *env = &cpu->env; - ppc_slb_t *slb; - - if (!msr_is_64bit(env, env->msr)) { - rb &= 0xffffffff; - } - slb = slb_lookup(cpu, rb); - if (slb == NULL) { - *rt = (target_ulong)-1ul; - } else { - *rt = slb->vsid; - } - return 0; -} - -void helper_store_slb(CPUPPCState *env, target_ulong rb, target_ulong rs) -{ - PowerPCCPU *cpu = env_archcpu(env); - - if (ppc_store_slb(cpu, rb & 0xfff, rb & ~0xfffULL, rs) < 0) { - raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, - POWERPC_EXCP_INVAL, GETPC()); - } -} - -target_ulong helper_load_slb_esid(CPUPPCState *env, target_ulong rb) -{ - PowerPCCPU *cpu = env_archcpu(env); - target_ulong rt = 0; - - if (ppc_load_slb_esid(cpu, rb, &rt) < 0) { - raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, - POWERPC_EXCP_INVAL, GETPC()); - } - return rt; -} - -target_ulong helper_find_slb_vsid(CPUPPCState *env, target_ulong rb) -{ - PowerPCCPU *cpu = env_archcpu(env); - target_ulong rt = 0; - - if (ppc_find_slb_vsid(cpu, rb, &rt) < 0) { - raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, - POWERPC_EXCP_INVAL, GETPC()); - } - return rt; -} - -target_ulong helper_load_slb_vsid(CPUPPCState *env, target_ulong rb) -{ - PowerPCCPU *cpu = env_archcpu(env); - target_ulong rt = 0; - - if (ppc_load_slb_vsid(cpu, rb, &rt) < 0) { - raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, - POWERPC_EXCP_INVAL, GETPC()); - } - return rt; -} -#endif - /* Check No-Execute or Guarded Storage */ static inline int ppc_hash64_pte_noexec_guard(PowerPCCPU *cpu, ppc_hash_pte64_t pte) @@ -1146,15 +938,6 @@ void ppc_hash64_tlb_flush_hpte(PowerPCCPU *cpu, target_ulong ptex, cpu->env.tlb_need_flush = TLB_NEED_GLOBAL_FLUSH | TLB_NEED_LOCAL_FLUSH; } -#ifdef CONFIG_TCG -void helper_store_lpcr(CPUPPCState *env, target_ulong val) -{ - PowerPCCPU *cpu = env_archcpu(env); - - ppc_store_lpcr(cpu, val); -} -#endif - void ppc_hash64_init(PowerPCCPU *cpu) { CPUPPCState *env = &cpu->env; diff --git a/target/ppc/mmu-hash64.h b/target/ppc/mmu-hash64.h index 4b8b8e7950..44fd7c9d35 100644 --- a/target/ppc/mmu-hash64.h +++ b/target/ppc/mmu-hash64.h @@ -7,6 +7,7 @@ void dump_slb(PowerPCCPU *cpu); int ppc_store_slb(PowerPCCPU *cpu, target_ulong slot, target_ulong esid, target_ulong vsid); +ppc_slb_t *slb_lookup(PowerPCCPU *cpu, target_ulong eaddr); hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr); int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr address, int rw, int mmu_idx); diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c index dbf7b398cd..6db2678a89 100644 --- a/target/ppc/mmu_helper.c +++ b/target/ppc/mmu_helper.c @@ -1361,3 +1361,211 @@ void helper_check_tlb_flush_global(CPUPPCState *env) /*****************************************************************************/ +#if defined(TARGET_PPC64) +void helper_slbia(CPUPPCState *env, uint32_t ih) +{ + PowerPCCPU *cpu = env_archcpu(env); + int starting_entry; + int n; + + /* + * slbia must always flush all TLB (which is equivalent to ERAT in ppc + * architecture). Matching on SLB_ESID_V is not good enough, because slbmte + * can overwrite a valid SLB without flushing its lookaside information. + * + * It would be possible to keep the TLB in synch with the SLB by flushing + * when a valid entry is overwritten by slbmte, and therefore slbia would + * not have to flush unless it evicts a valid SLB entry. However it is + * expected that slbmte is more common than slbia, and slbia is usually + * going to evict valid SLB entries, so that tradeoff is unlikely to be a + * good one. + * + * ISA v2.05 introduced IH field with values 0,1,2,6. These all invalidate + * the same SLB entries (everything but entry 0), but differ in what + * "lookaside information" is invalidated. TCG can ignore this and flush + * everything. + * + * ISA v3.0 introduced additional values 3,4,7, which change what SLBs are + * invalidated. + */ + + env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; + + starting_entry = 1; /* default for IH=0,1,2,6 */ + + if (env->mmu_model == POWERPC_MMU_3_00) { + switch (ih) { + case 0x7: + /* invalidate no SLBs, but all lookaside information */ + return; + + case 0x3: + case 0x4: + /* also considers SLB entry 0 */ + starting_entry = 0; + break; + + case 0x5: + /* treat undefined values as ih==0, and warn */ + qemu_log_mask(LOG_GUEST_ERROR, + "slbia undefined IH field %u.\n", ih); + break; + + default: + /* 0,1,2,6 */ + break; + } + } + + for (n = starting_entry; n < cpu->hash64_opts->slb_size; n++) { + ppc_slb_t *slb = &env->slb[n]; + + if (!(slb->esid & SLB_ESID_V)) { + continue; + } + if (env->mmu_model == POWERPC_MMU_3_00) { + if (ih == 0x3 && (slb->vsid & SLB_VSID_C) == 0) { + /* preserves entries with a class value of 0 */ + continue; + } + } + + slb->esid &= ~SLB_ESID_V; + } +} + +static void __helper_slbie(CPUPPCState *env, target_ulong addr, + target_ulong global) +{ + PowerPCCPU *cpu = env_archcpu(env); + ppc_slb_t *slb; + + slb = slb_lookup(cpu, 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 + */ + env->tlb_need_flush |= + (global == false ? TLB_NEED_LOCAL_FLUSH : TLB_NEED_GLOBAL_FLUSH); + } +} + +void helper_slbie(CPUPPCState *env, target_ulong addr) +{ + __helper_slbie(env, addr, false); +} + +void helper_slbieg(CPUPPCState *env, target_ulong addr) +{ + __helper_slbie(env, addr, true); +} + +static int ppc_load_slb_esid(PowerPCCPU *cpu, target_ulong rb, + target_ulong *rt) +{ + CPUPPCState *env = &cpu->env; + int slot = rb & 0xfff; + ppc_slb_t *slb = &env->slb[slot]; + + if (slot >= cpu->hash64_opts->slb_size) { + return -1; + } + + *rt = slb->esid; + return 0; +} + +static int ppc_load_slb_vsid(PowerPCCPU *cpu, target_ulong rb, + target_ulong *rt) +{ + CPUPPCState *env = &cpu->env; + int slot = rb & 0xfff; + ppc_slb_t *slb = &env->slb[slot]; + + if (slot >= cpu->hash64_opts->slb_size) { + return -1; + } + + *rt = slb->vsid; + return 0; +} + +static int ppc_find_slb_vsid(PowerPCCPU *cpu, target_ulong rb, + target_ulong *rt) +{ + CPUPPCState *env = &cpu->env; + ppc_slb_t *slb; + + if (!msr_is_64bit(env, env->msr)) { + rb &= 0xffffffff; + } + slb = slb_lookup(cpu, rb); + if (slb == NULL) { + *rt = (target_ulong)-1ul; + } else { + *rt = slb->vsid; + } + return 0; +} + +void helper_store_slb(CPUPPCState *env, target_ulong rb, target_ulong rs) +{ + PowerPCCPU *cpu = env_archcpu(env); + + if (ppc_store_slb(cpu, rb & 0xfff, rb & ~0xfffULL, rs) < 0) { + raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, + POWERPC_EXCP_INVAL, GETPC()); + } +} + +target_ulong helper_load_slb_esid(CPUPPCState *env, target_ulong rb) +{ + PowerPCCPU *cpu = env_archcpu(env); + target_ulong rt = 0; + + if (ppc_load_slb_esid(cpu, rb, &rt) < 0) { + raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, + POWERPC_EXCP_INVAL, GETPC()); + } + return rt; +} + +target_ulong helper_find_slb_vsid(CPUPPCState *env, target_ulong rb) +{ + PowerPCCPU *cpu = env_archcpu(env); + target_ulong rt = 0; + + if (ppc_find_slb_vsid(cpu, rb, &rt) < 0) { + raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, + POWERPC_EXCP_INVAL, GETPC()); + } + return rt; +} + +target_ulong helper_load_slb_vsid(CPUPPCState *env, target_ulong rb) +{ + PowerPCCPU *cpu = env_archcpu(env); + target_ulong rt = 0; + + if (ppc_load_slb_vsid(cpu, rb, &rt) < 0) { + raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, + POWERPC_EXCP_INVAL, GETPC()); + } + return rt; +} + +void helper_store_lpcr(CPUPPCState *env, target_ulong val) +{ + PowerPCCPU *cpu = env_archcpu(env); + + ppc_store_lpcr(cpu, val); +} +#endif