From patchwork Tue Jun 23 20:49:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 279660 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE1A1C433E1 for ; Tue, 23 Jun 2020 20:59:44 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 92F7B2070E for ; Tue, 23 Jun 2020 20:59:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 92F7B2070E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ilande.co.uk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43544 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jnq19-00040S-Pj for qemu-devel@archiver.kernel.org; Tue, 23 Jun 2020 16:59:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45432) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jnpsc-0004mW-3w; Tue, 23 Jun 2020 16:50:54 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:56426 helo=mail.default.ilande.uk0.bigv.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jnpsZ-0001sY-9V; Tue, 23 Jun 2020 16:50:53 -0400 Received: from host86-158-109-79.range86-158.btcentralplus.com ([86.158.109.79] helo=kentang.home) by mail.default.ilande.uk0.bigv.io with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jnpsV-0007T1-UQ; Tue, 23 Jun 2020 21:50:53 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org, laurent@vivier.eu, fthain@telegraphics.com.au Date: Tue, 23 Jun 2020 21:49:26 +0100 Message-Id: <20200623204936.24064-13-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200623204936.24064-1-mark.cave-ayland@ilande.co.uk> References: <20200623204936.24064-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 86.158.109.79 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v2 12/22] adb: keep track of devices with pending data X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.default.ilande.uk0.bigv.io) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.default.ilande.uk0.bigv.io X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 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" Add a new pending variable to ADBBusState which is a bitmask indicating which ADB devices have data to send. Update the bitmask every time that an ADB request is executed. Signed-off-by: Mark Cave-Ayland Tested-by: Finn Thain --- hw/input/adb.c | 16 +++++++++++++++- include/hw/input/adb.h | 1 + 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/hw/input/adb.c b/hw/input/adb.c index bb36ce6fad..c1adb21e6b 100644 --- a/hw/input/adb.c +++ b/hw/input/adb.c @@ -41,6 +41,7 @@ static void adb_device_reset(ADBDevice *d) int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len) { ADBDevice *d; + ADBDeviceClass *adc; int devaddr, cmd, i; cmd = buf[0] & 0xf; @@ -51,14 +52,27 @@ int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len) } return 0; } + + s->pending = 0; + for (i = 0; i < s->nb_devices; i++) { + d = s->devices[i]; + adc = ADB_DEVICE_GET_CLASS(d); + + if (adc->devhasdata(d)) { + s->pending |= (1 << d->devaddr); + } + } + devaddr = buf[0] >> 4; for (i = 0; i < s->nb_devices; i++) { d = s->devices[i]; + adc = ADB_DEVICE_GET_CLASS(d); + if (d->devaddr == devaddr) { - ADBDeviceClass *adc = ADB_DEVICE_GET_CLASS(d); return adc->devreq(d, obuf, buf, len); } } + return ADB_RET_NOTPRESENT; } diff --git a/include/hw/input/adb.h b/include/hw/input/adb.h index 9b80204e43..f1bc358d8e 100644 --- a/include/hw/input/adb.h +++ b/include/hw/input/adb.h @@ -76,6 +76,7 @@ struct ADBBusState { /*< public >*/ ADBDevice *devices[MAX_ADB_DEVICES]; + uint16_t pending; int nb_devices; int poll_index;