From patchwork Sun Jun 14 14:28:30 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: 1308952 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: 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=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ilande.co.uk 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 ozlabs.org (Postfix) with ESMTPS id 49lH6j5CwXz9sR4 for ; Mon, 15 Jun 2020 00:34:53 +1000 (AEST) Received: from localhost ([::1]:43634 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jkTil-0006R2-BY for incoming@patchwork.ozlabs.org; Sun, 14 Jun 2020 10:34:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51944) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jkTeE-0007e5-UT; Sun, 14 Jun 2020 10:30:10 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:38422 helo=mail.default.ilande.uk0.bigv.io) by eggs.gnu.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jkTeD-0005Im-9P; Sun, 14 Jun 2020 10:30:10 -0400 Received: from host217-39-64-113.range217-39.btcentralplus.com ([217.39.64.113] 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 1jkTe4-0006Hv-GH; Sun, 14 Jun 2020 15:30:06 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org, laurent@vivier.eu, fthain@telegraphics.com.au Date: Sun, 14 Jun 2020 15:28:30 +0100 Message-Id: <20200614142840.10245-13-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200614142840.10245-1-mark.cave-ayland@ilande.co.uk> References: <20200614142840.10245-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 217.39.64.113 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 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+incoming=patchwork.ozlabs.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 --- 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;