From patchwork Mon Jul 29 01:39:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13744150 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 7C2F2C3DA70 for ; Mon, 29 Jul 2024 01:58:36 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sYFdf-0004vu-G0; Sun, 28 Jul 2024 21:57:27 -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 1sYFdZ-0004tG-67 for qemu-devel@nongnu.org; Sun, 28 Jul 2024 21:57:22 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sYFdS-0002Tx-ML for qemu-devel@nongnu.org; Sun, 28 Jul 2024 21:57:20 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8Dxh+nx9qZmf1QDAA--.10333S3; Mon, 29 Jul 2024 09:57:06 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front1 (Coremail) with SMTP id qMiowMBx4MXu9qZm1AIEAA--.19410S4; Mon, 29 Jul 2024 09:57:05 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, maobibo@loongson.cn, philmd@linaro.org Subject: [PATCH 2/5] target/loongarch: Add do_lddir/ldpte() Date: Mon, 29 Jul 2024 09:39:36 +0800 Message-Id: <20240729013939.1807982-3-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20240729013939.1807982-1-gaosong@loongson.cn> References: <20240729013939.1807982-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: qMiowMBx4MXu9qZm1AIEAA--.19410S4 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=mail.loongson.cn 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 do_lddir is used for accessing directory entries during page table walking, do_ldpte is used for page table entry accesses during page table walking. Signed-off-by: Song Gao --- target/loongarch/tcg/tlb_helper.c | 53 ++++++++++++++++++++----------- 1 file changed, 34 insertions(+), 19 deletions(-) diff --git a/target/loongarch/tcg/tlb_helper.c b/target/loongarch/tcg/tlb_helper.c index 97f38fc391..3c3452b316 100644 --- a/target/loongarch/tcg/tlb_helper.c +++ b/target/loongarch/tcg/tlb_helper.c @@ -507,11 +507,11 @@ bool loongarch_cpu_tlb_fill(CPUState *cs, vaddr address, int size, cpu_loop_exit_restore(cs, retaddr); } -target_ulong helper_lddir(CPULoongArchState *env, target_ulong base, - target_ulong level, uint32_t mem_idx) +static target_ulong do_lddir(CPULoongArchState *env, target_ulong base, + target_ulong badvaddr, target_ulong level) { CPUState *cs = env_cpu(env); - target_ulong badvaddr, index, phys, ret; + target_ulong index, phys, ret; int shift; uint64_t dir_base, dir_width; @@ -535,7 +535,6 @@ target_ulong helper_lddir(CPULoongArchState *env, target_ulong base, } } - badvaddr = env->CSR_TLBRBADV; base = base & TARGET_PHYS_MASK; /* 0:64bit, 1:128bit, 2:192bit, 3:256bit */ @@ -549,11 +548,18 @@ target_ulong helper_lddir(CPULoongArchState *env, target_ulong base, return ret; } -void helper_ldpte(CPULoongArchState *env, target_ulong base, target_ulong odd, - uint32_t mem_idx) +target_ulong helper_lddir(CPULoongArchState *env, target_ulong base, + target_ulong level, uint32_t mem_idx) +{ + return do_lddir(env, base, env->CSR_TLBRBADV, level); +} + +static void do_ldpte(CPULoongArchState *env, target_ulong base, + target_ulong badvaddr, target_ulong *ptval0, + target_ulong *ptval1, target_ulong *ps) { CPUState *cs = env_cpu(env); - target_ulong phys, tmp0, ptindex, ptoffset0, ptoffset1, ps, badv; + target_ulong ptindex, ptoffset0, ptoffset1, phys0, phys1; int shift; uint64_t ptbase = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, PTBASE); uint64_t ptwidth = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, PTWIDTH); @@ -584,34 +590,43 @@ void helper_ldpte(CPULoongArchState *env, target_ulong base, target_ulong odd, base = FIELD_DP64(base, TLBENTRY, G, 1); } - ps = dir_base + dir_width - 1; + *ps = dir_base + dir_width - 1; /* * Huge pages are evenly split into parity pages * when loaded into the tlb, * so the tlb page size needs to be divided by 2. */ - tmp0 = base; - if (odd) { - tmp0 += MAKE_64BIT_MASK(ps, 1); - } + *ptval0 = base; + *ptval1 = base + MAKE_64BIT_MASK(*ps, 1); } else { /* 0:64bit, 1:128bit, 2:192bit, 3:256bit */ shift = FIELD_EX64(env->CSR_PWCL, CSR_PWCL, PTEWIDTH); shift = (shift + 1) * 3; - badv = env->CSR_TLBRBADV; - ptindex = (badv >> ptbase) & ((1 << ptwidth) - 1); - ptindex = ptindex & ~0x1; /* clear bit 0 */ + ptindex = (badvaddr >> ptbase) & ((1 << ptwidth) - 1); + ptindex = ptindex & ~0x1; /* clear bit 0 */ ptoffset0 = ptindex << shift; ptoffset1 = (ptindex + 1) << shift; - phys = base | (odd ? ptoffset1 : ptoffset0); - tmp0 = ldq_phys(cs->as, phys) & TARGET_PHYS_MASK; - ps = ptbase; + phys0 = base | ptoffset0; + phys1 = base | ptoffset1; + *ptval0 = ldq_phys(cs->as, phys0) & TARGET_PHYS_MASK; + *ptval1 = ldq_phys(cs->as, phys1) & TARGET_PHYS_MASK; + *ps = ptbase; } + return; +} + +void helper_ldpte(CPULoongArchState *env, target_ulong base, target_ulong odd, + uint32_t mem_idx) +{ + target_ulong tmp0, tmp1, ps; + + do_ldpte(env, base, env->CSR_TLBRBADV, &tmp0, &tmp1, &ps); + if (odd) { - env->CSR_TLBRELO1 = tmp0; + env->CSR_TLBRELO1 = tmp1; } else { env->CSR_TLBRELO0 = tmp0; }