From nobody Sun Apr 12 04:36:00 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1770922501353582.3565284656104; Thu, 12 Feb 2026 10:55:01 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vqbpp-0004kh-55; Thu, 12 Feb 2026 13:54:41 -0500 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 1vqbpi-0004ZR-5M for qemu-devel@nongnu.org; Thu, 12 Feb 2026 13:54:35 -0500 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 1vqbpf-0004Et-Hr for qemu-devel@nongnu.org; Thu, 12 Feb 2026 13:54:33 -0500 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id 9C8AC596ADA; Thu, 12 Feb 2026 19:54:27 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id 5OD8RZ5i--jT; Thu, 12 Feb 2026 19:54:25 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 2F854596A29; Thu, 12 Feb 2026 19:54:25 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu From: BALATON Zoltan Subject: [PATCH v2] hw/usb/hcd-ohci: Implement frame number overflow event MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Howard Spoelstra , Peter Maydell , philmd@linaro.org Message-Id: <20260212185425.2F854596A29@zero.eik.bme.hu> Date: Thu, 12 Feb 2026 19:54:25 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1770922503780154100 Content-Type: text/plain; charset="utf-8" According to specification 6.5.6 FrameNumberOverflow Event when bit 15 of frame count changes (either from 1 to 0 or 0 to 1) a FrameNumberOverflow interrupt should be generated. This fixes usb-audio on mac99,via=3Dpmu with MacOS 9. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3274 Signed-off-by: BALATON Zoltan Tested-by: Elisey Konstantinov --- v2: - updated commit message - added Tested-by and Resolves tags hw/usb/hcd-ohci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c index c7e9c71903..f8da16bc8f 100644 --- a/hw/usb/hcd-ohci.c +++ b/hw/usb/hcd-ohci.c @@ -1246,6 +1246,9 @@ static void ohci_frame_boundary(void *opaque) hcca.frame =3D cpu_to_le16(ohci->frame_number); /* When the HC updates frame number, set pad to 0. Ref OHCI Spec 4.4.1= */ hcca.pad =3D 0; + if (ohci->frame_number =3D=3D 0x8000 || ohci->frame_number =3D=3D 0) { + ohci_set_interrupt(ohci, OHCI_INTR_FNO); + } =20 if (ohci->done_count =3D=3D 0 && !(ohci->intr_status & OHCI_INTR_WD)) { if (!ohci->done) { --=20 2.41.3