From patchwork Sat Jun 22 09:43:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?In=C3=A8s_Varhol?= X-Patchwork-Id: 13708263 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 D9A6FC3DA40 for ; Sat, 22 Jun 2024 09:46:03 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sKxIX-00029A-5V; Sat, 22 Jun 2024 05:44:41 -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 1sKxIV-00027L-Bq; Sat, 22 Jun 2024 05:44:39 -0400 Received: from zproxy2.enst.fr ([137.194.2.221]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sKxIT-00011I-6O; Sat, 22 Jun 2024 05:44:39 -0400 Received: from localhost (localhost [IPv6:::1]) by zproxy2.enst.fr (Postfix) with ESMTP id E8DA38082B; Sat, 22 Jun 2024 11:44:33 +0200 (CEST) Received: from zproxy2.enst.fr ([IPv6:::1]) by localhost (zproxy2.enst.fr [IPv6:::1]) (amavis, port 10032) with ESMTP id 3bLECgnesXHJ; Sat, 22 Jun 2024 11:44:32 +0200 (CEST) Received: from localhost (localhost [IPv6:::1]) by zproxy2.enst.fr (Postfix) with ESMTP id 8F8FE80767; Sat, 22 Jun 2024 11:44:32 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.10.3 zproxy2.enst.fr 8F8FE80767 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telecom-paris.fr; s=A35C7578-1106-11E5-A17F-C303FDDA8F2E; t=1719049472; bh=ujbcGKP8+6XadKvbLhzG5RyhLX8RH5RysSuKMS0bOp4=; h=From:To:Date:Message-ID:MIME-Version; b=tx8gNkpHL4MzRHNy9SjTiGpenXm5mmW7b8ONoPGRpbX0O1qxmQ3L/1MfMoKexlc+N 8RnZcjhqxg0wyomRamNL+71B7uvyonfO8L834zlh1makiWLt9Qes0rHrRt55sdwetB ACVYqWk8oGNGjPi7RfAes7qlTrSOqdH7/LX2htfQ= X-Virus-Scanned: amavis at enst.fr Received: from zproxy2.enst.fr ([IPv6:::1]) by localhost (zproxy2.enst.fr [IPv6:::1]) (amavis, port 10026) with ESMTP id 4YzbC2TivhTi; Sat, 22 Jun 2024 11:44:32 +0200 (CEST) Received: from inesv-Inspiron-3501.enst.fr (unknown [IPv6:2a04:8ec0:0:124::190c]) by zproxy2.enst.fr (Postfix) with ESMTPSA id 2CCEC80820; Sat, 22 Jun 2024 11:44:31 +0200 (CEST) From: =?utf-8?q?In=C3=A8s_Varhol?= To: qemu-devel@nongnu.org Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Peter Maydell , Laurent Vivier , Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Luc Michel , =?utf-8?q?In=C3=A8s_Varhol?= , Arnaud Minier , qemu-arm@nongnu.org, Thomas Huth , Damien Hedde Subject: [PATCH v4 2/3] hw/clock: Expose 'qtest-clock-period' QOM property for QTests Date: Sat, 22 Jun 2024 11:43:54 +0200 Message-ID: <20240622094402.244604-3-ines.varhol@telecom-paris.fr> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240622094402.244604-1-ines.varhol@telecom-paris.fr> References: <20240622094402.244604-1-ines.varhol@telecom-paris.fr> MIME-Version: 1.0 Received-SPF: pass client-ip=137.194.2.221; envelope-from=ines.varhol@telecom-paris.fr; helo=zproxy2.enst.fr X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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 Expose the clock period via the QOM 'qtest-clock-period' property so it can be used in QTests. This property is only accessible in QTests (not via HMP). Signed-off-by: Inès Varhol Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Luc Michel --- docs/devel/clocks.rst | 6 ++++++ hw/core/clock.c | 16 ++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/docs/devel/clocks.rst b/docs/devel/clocks.rst index 177ee1c90d..3f744f2be1 100644 --- a/docs/devel/clocks.rst +++ b/docs/devel/clocks.rst @@ -358,6 +358,12 @@ humans (for instance in debugging), use ``clock_display_freq()``, which returns a prettified string-representation, e.g. "33.3 MHz". The caller must free the string with g_free() after use. +It's also possible to retrieve the clock period from a QTest by +accessing QOM property ``qtest-clock-period`` using a QMP command. +This property is only present when the device is being run under +the ``qtest`` accelerator; it is not available when QEMU is +being run normally. + Calculating expiry deadlines ---------------------------- diff --git a/hw/core/clock.c b/hw/core/clock.c index e212865307..cbe7b1bc46 100644 --- a/hw/core/clock.c +++ b/hw/core/clock.c @@ -13,6 +13,8 @@ #include "qemu/osdep.h" #include "qemu/cutils.h" +#include "qapi/visitor.h" +#include "sysemu/qtest.h" #include "hw/clock.h" #include "trace.h" @@ -158,6 +160,15 @@ bool clock_set_mul_div(Clock *clk, uint32_t multiplier, uint32_t divider) return true; } +static void clock_period_prop_get(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + Clock *clk = CLOCK(obj); + uint64_t period = clock_get(clk); + visit_type_uint64(v, name, &period, errp); +} + + static void clock_initfn(Object *obj) { Clock *clk = CLOCK(obj); @@ -166,6 +177,11 @@ static void clock_initfn(Object *obj) clk->divider = 1; QLIST_INIT(&clk->children); + + if (qtest_enabled()) { + object_property_add(obj, "qtest-clock-period", "uint64", + clock_period_prop_get, NULL, NULL, NULL); + } } static void clock_finalizefn(Object *obj)