From patchwork Tue Jul 16 03:15:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13734017 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 92846C3DA4B for ; Tue, 16 Jul 2024 03:33:46 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTYve-0002pj-S3; Mon, 15 Jul 2024 23:32:38 -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 1sTYvc-0002mv-8C for qemu-devel@nongnu.org; Mon, 15 Jul 2024 23:32:36 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTYvZ-0002Ui-Qp for qemu-devel@nongnu.org; Mon, 15 Jul 2024 23:32:36 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8Ax3vDH6ZVmut0EAA--.12904S3; Tue, 16 Jul 2024 11:32:23 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxJMXG6ZVmpbZKAA--.26854S2; Tue, 16 Jul 2024 11:32:23 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: alex.bennee@linaro.org, philmd@linaro.org, richard.henderson@linaro.org, peter.maydell@linaro.org, pbonzini@redhat.com, maobibo@loongson.cn Subject: [PATCH] qemu/timer: Add host ticks function for LoongArch Date: Tue, 16 Jul 2024 11:15:00 +0800 Message-Id: <20240716031500.4193498-1-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxJMXG6ZVmpbZKAA--.26854S2 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 Signed-off-by: Song Gao --- include/qemu/timer.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/qemu/timer.h b/include/qemu/timer.h index 5ce83c7911..fa56ec9481 100644 --- a/include/qemu/timer.h +++ b/include/qemu/timer.h @@ -1016,6 +1016,15 @@ static inline int64_t cpu_get_host_ticks(void) return val; } +#elif defined(__loongarch64) +static inline int64_t cpu_get_host_ticks(void) +{ + uint64_t val; + + asm volatile("rdtime.d %0, $zero" : "=r"(val)); + return val; +} + #else /* The host CPU doesn't have an easily accessible cycle counter. Just return a monotonically increasing value. This will be