From patchwork Thu Oct 19 12:58:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Gao X-Patchwork-Id: 1851630 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SB7B339zlz20cx for ; Fri, 20 Oct 2023 00:00:43 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qtScC-0005da-Ab; Thu, 19 Oct 2023 08:59:04 -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 1qtScA-0005dB-Mu for qemu-devel@nongnu.org; Thu, 19 Oct 2023 08:59:02 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qtSc6-0002Yp-VO for qemu-devel@nongnu.org; Thu, 19 Oct 2023 08:59:02 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8BxpPAMKDFlwzIzAA--.33960S3; Thu, 19 Oct 2023 20:58:52 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Axji8LKDFl8dsqAA--.25009S4; Thu, 19 Oct 2023 20:58:52 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org, philmd@redhat.com, peter.maydell@linaro.org, eblake@redhat.com, armbru@redhat.com, maobibo@loongson.cn Subject: [PATCH v2 2/4] target/loongarch: Add cpu feature flags Date: Thu, 19 Oct 2023 20:58:51 +0800 Message-Id: <20231019125853.3436531-3-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20231019125853.3436531-1-gaosong@loongson.cn> References: <20231019125853.3436531-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Axji8LKDFl8dsqAA--.25009S4 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org CPULoongArchState adds cpu feature flags features. Intrduce loongarch_feature() to check feature and set_feature() to set feature. Signed-off-by: Song Gao --- target/loongarch/cpu.c | 4 ++++ target/loongarch/cpu.h | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index ef6922e812..87fcd08110 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -366,6 +366,10 @@ static void loongarch_la464_initfn(Object *obj) CPULoongArchState *env = &cpu->env; int i; + env->features = 0; + set_feature(env, CPU_FEATURE_LSX); + set_feature(env, CPU_FEATURE_LASX); + for (i = 0; i < 21; i++) { env->cpucfg[i] = 0x0; } diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 8b54cf109c..b98064945a 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -295,6 +295,8 @@ typedef struct CPUArchState { uint64_t lladdr; /* LL virtual address compared against SC */ uint64_t llval; + uint64_t features; + /* LoongArch CSRs */ uint64_t CSR_CRMD; uint64_t CSR_PRMD; @@ -364,6 +366,36 @@ typedef struct CPUArchState { #endif } CPULoongArchState; +/* + * See arch/loongarch/include/asm/cpu.h + * and arch/loongarch/include/uapi/asm/hwcap.h + */ +enum loongarch_features { + CPU_FEATURE_CPUCFG, + CPU_FEATURE_LAM, + CPU_FEATURE_UAL, + CPU_FEATURE_FPU, + CPU_FEATURE_LSX, + CPU_FEATURE_LASX, + CPU_FEATURE_CRC32, + CPU_FEATURE_COMPLEX, + CPU_FEATURE_CRYPTO, + CPU_FEATURE_LVZ, + CPU_FEATURE_LBT_X86, + CPU_FEATURE_LBT_ARM, + CPU_FEATURE_LBT_MIPS, +}; + +static inline int loongarch_feature(CPULoongArchState *env, int feature) +{ + return (env->features & (1ULL << feature)) != 0; +} + +static inline void set_feature(CPULoongArchState *env, int feature) +{ + env->features |= 1ULL << feature; +} + /** * LoongArchCPU: * @env: #CPULoongArchState