From patchwork Sat May 11 01:46:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: BALATON Zoltan X-Patchwork-Id: 13662205 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 054B3C25B10 for ; Sat, 11 May 2024 01:52:15 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s5bpd-0006wq-8v; Fri, 10 May 2024 21:47:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s5bov-00059Z-5i; Fri, 10 May 2024 21:46:41 -0400 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s5bol-0003aN-J5; Fri, 10 May 2024 21:46:34 -0400 Received: from zero.eik.bme.hu (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 2EF154E6779; Sat, 11 May 2024 03:46:07 +0200 (CEST) X-Virus-Scanned: amavisd-new at eik.bme.hu Received: from zero.eik.bme.hu ([127.0.0.1]) by zero.eik.bme.hu (zero.eik.bme.hu [127.0.0.1]) (amavisd-new, port 10028) with ESMTP id p9ZV8JUGf8wj; Sat, 11 May 2024 03:46:05 +0200 (CEST) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 3F3EE4E6775; Sat, 11 May 2024 03:46:05 +0200 (CEST) Message-Id: <6634f51ba231bb8dcb70f81b8878e41e6b9bd93d.1715390232.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v6 25/48] target/ppc/mmu_common.c: Split off real mode handling from get_physical_address_wtlb() MIME-Version: 1.0 To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Cc: Nicholas Piggin , Daniel Henrique Barboza Date: Sat, 11 May 2024 03:46:05 +0200 (CEST) Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add ppc_real_mode_xlate() to handle real mode translation and allow removing this case from ppc_jumbo_xlate(). Signed-off-by: BALATON Zoltan --- target/ppc/mmu_common.c | 46 ++++++++++++++++++++++++----------------- 1 file changed, 27 insertions(+), 19 deletions(-) diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c index 3d29c44111..14d05d84e1 100644 --- a/target/ppc/mmu_common.c +++ b/target/ppc/mmu_common.c @@ -1077,23 +1077,12 @@ int get_physical_address_wtlb(CPUPPCState *env, mmu_ctx_t *ctx, MMUAccessType access_type, int type, int mmu_idx) { - bool real_mode = (type == ACCESS_CODE) ? !FIELD_EX64(env->msr, MSR, IR) - : !FIELD_EX64(env->msr, MSR, DR); - if (real_mode) { - ctx->raddr = eaddr; - ctx->prot = PAGE_RWX; - return 0; - } - switch (env->mmu_model) { case POWERPC_MMU_SOFT_6xx: return mmu6xx_get_physical_address(env, ctx, eaddr, access_type, type); case POWERPC_MMU_SOFT_4xx: return mmu40x_get_physical_address(env, &ctx->raddr, &ctx->prot, eaddr, access_type); - case POWERPC_MMU_REAL: - cpu_abort(env_cpu(env), - "PowerPC in real mode do not do any translation\n"); default: cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n"); } @@ -1211,6 +1200,24 @@ static bool ppc_booke_xlate(PowerPCCPU *cpu, vaddr eaddr, return false; } +static bool ppc_real_mode_xlate(PowerPCCPU *cpu, vaddr eaddr, + MMUAccessType access_type, + hwaddr *raddrp, int *psizep, int *protp) +{ + CPUPPCState *env = &cpu->env; + + if (access_type == MMU_INST_FETCH ? !FIELD_EX64(env->msr, MSR, IR) + : !FIELD_EX64(env->msr, MSR, DR)) { + *raddrp = eaddr; + *protp = PAGE_RWX; + *psizep = TARGET_PAGE_BITS; + return true; + } else if (env->mmu_model == POWERPC_MMU_REAL) { + cpu_abort(CPU(cpu), "PowerPC in real mode shold not do translation\n"); + } + return false; +} + /* Perform address translation */ /* TODO: Split this by mmu_model. */ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr, @@ -1224,6 +1231,10 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr, int type; int ret; + if (ppc_real_mode_xlate(cpu, eaddr, access_type, raddrp, psizep, protp)) { + return true; + } + if (access_type == MMU_INST_FETCH) { /* code access */ type = ACCESS_CODE; @@ -1263,11 +1274,8 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr, env->spr[SPR_40x_DEAR] = eaddr; env->spr[SPR_40x_ESR] = 0x00000000; break; - case POWERPC_MMU_REAL: - cpu_abort(cs, "PowerPC in real mode should never raise " - "any MMU exceptions\n"); default: - cpu_abort(cs, "Unknown or invalid MMU model\n"); + g_assert_not_reached(); } break; case -2: @@ -1319,11 +1327,8 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr, env->spr[SPR_40x_ESR] = 0x00000000; } break; - case POWERPC_MMU_REAL: - cpu_abort(cs, "PowerPC in real mode should never raise " - "any MMU exceptions\n"); default: - cpu_abort(cs, "Unknown or invalid MMU model\n"); + g_assert_not_reached(); } break; case -2: @@ -1417,6 +1422,9 @@ bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type, case POWERPC_MMU_BOOKE206: return ppc_booke_xlate(cpu, eaddr, access_type, raddrp, psizep, protp, mmu_idx, guest_visible); + case POWERPC_MMU_REAL: + return ppc_real_mode_xlate(cpu, eaddr, access_type, raddrp, psizep, + protp); case POWERPC_MMU_MPC8xx: cpu_abort(env_cpu(&cpu->env), "MPC8xx MMU model is not implemented\n"); default: