From nobody Wed Nov 27 12:35:32 2024 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8FE491D551; Fri, 11 Oct 2024 00:07:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728605253; cv=none; b=tb31uIFn8AOMuAm+XIKGL58+EdisceiGGwvxF1VTjCZFhepdFX41g/kte25PSa8b2KLh+YNo8UOQvtORpIAK/Ig/QrkShMcyZsUOva/LPip4EVjOJPOVhfu+XQk7Td+wYxs9csIUflaQoByrFL/SDCcTqRm5lQ22imft3FZm33g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728605253; c=relaxed/simple; bh=SEZVsSJ3a46E0oX5ZwE8La/80l4wQDAX2p6gKqh3ypQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=c9fnOahVFPS5yhZnk426itZ7kmLw3yzAGYhcmcOCRpNNP0IFPBkqlkfrYWOJGN1qmUnnOUjBgsobd9pNOGLr7GUrZIjeyhoqGMb/i04K7pC5rqJBtqQC711AqcECtlc/KSkAQgrWmEFVcPk3FWfE5UhbKXf4KL9HumIZg1/43OQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=l3DWKYbG; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="l3DWKYbG" Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49AHCs2r024117; Fri, 11 Oct 2024 00:07:09 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= 6bztHUYvMMxB9IN8zQZC689zDaxiSCm1Mj9EPEMEDNs=; b=l3DWKYbG/NxgTfNo nLbIJP3qi4kUDj8rHrMvHSbnbs62wQq4Cz5IrF1USmxb16wBf41QOfW5xD9YLCsG KfVkBB3dZjKsXiyPmWTIdIubwKqNdFSYc90tl+V13WxRGvFAjpsj8lTEMpP6Z1TN lQUHmeZx4f/zOL6/H72WQZe2mbGNcZyCOyfQhGnrnln1ukz8JI9oGrgScX9cimCa cB50UhllEjHyqa3KggJPuG5p8a2tKyTi+gIDvvxBGdWMhK9Q/fJp26/3WTLKAkAW lN7LAMEU4spBh9RKeP4Yk8kUZgBsrPVon6qwPwxwW6C/z0mo3Uq2pNh4DoBVW+2D XvhtOw== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 426adhjdnt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2024 00:07:09 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49B07703016308 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2024 00:07:07 GMT Received: from hu-wcheng-lv.qualcomm.com (10.49.16.6) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 10 Oct 2024 17:07:07 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v28 09/33] usb: dwc3: Specify maximum number of XHCI interrupters Date: Thu, 10 Oct 2024 17:06:03 -0700 Message-ID: <20241011000650.2585600-19-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241011000650.2585600-1-quic_wcheng@quicinc.com> References: <20241011000650.2585600-1-quic_wcheng@quicinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: sePWqAy2vDvUYTbT6hhwObJbH6Xco2Bg X-Proofpoint-ORIG-GUID: sePWqAy2vDvUYTbT6hhwObJbH6Xco2Bg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 mlxlogscore=883 clxscore=1015 mlxscore=0 impostorscore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 priorityscore=1501 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410100159 Content-Type: text/plain; charset="utf-8" Allow for the DWC3 host driver to pass along XHCI property that defines how many interrupters to allocate. This is in relation for the number of event rings that can be potentially used by other processors within the system. Acked-by: Thinh Nguyen Signed-off-by: Wesley Cheng --- drivers/usb/dwc3/core.c | 12 ++++++++++++ drivers/usb/dwc3/core.h | 2 ++ drivers/usb/dwc3/host.c | 3 +++ 3 files changed, 17 insertions(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 7ee61a89520b..f98d5d04f493 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1573,6 +1573,7 @@ static void dwc3_get_properties(struct dwc3 *dwc) u8 tx_thr_num_pkt_prd =3D 0; u8 tx_max_burst_prd =3D 0; u8 tx_fifo_resize_max_num; + u16 num_hc_interrupters; const char *usb_psy_name; int ret; =20 @@ -1595,6 +1596,9 @@ static void dwc3_get_properties(struct dwc3 *dwc) */ tx_fifo_resize_max_num =3D 6; =20 + /* default to a single XHCI interrupter */ + num_hc_interrupters =3D 1; + dwc->maximum_speed =3D usb_get_maximum_speed(dev); dwc->max_ssp_rate =3D usb_get_maximum_ssp_rate(dev); dwc->dr_mode =3D usb_get_dr_mode(dev); @@ -1648,6 +1652,12 @@ static void dwc3_get_properties(struct dwc3 *dwc) &tx_thr_num_pkt_prd); device_property_read_u8(dev, "snps,tx-max-burst-prd", &tx_max_burst_prd); + device_property_read_u16(dev, "num-hc-interrupters", + &num_hc_interrupters); + /* DWC3 core allowed to have a max of 8 interrupters */ + if (num_hc_interrupters > 8) + num_hc_interrupters =3D 8; + dwc->do_fifo_resize =3D device_property_read_bool(dev, "tx-fifo-resize"); if (dwc->do_fifo_resize) @@ -1736,6 +1746,8 @@ static void dwc3_get_properties(struct dwc3 *dwc) dwc->imod_interval =3D 0; =20 dwc->tx_fifo_resize_max_num =3D tx_fifo_resize_max_num; + + dwc->num_hc_interrupters =3D num_hc_interrupters; } =20 /* check whether the core supports IMOD */ diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 3781c736c1a1..95e6989d116e 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -1077,6 +1077,7 @@ struct dwc3_scratchpad_array { * @tx_max_burst_prd: max periodic ESS transmit burst size * @tx_fifo_resize_max_num: max number of fifos allocated during txfifo re= size * @clear_stall_protocol: endpoint number that requires a delayed status p= hase + * @num_hc_interrupters: number of host controller interrupters * @hsphy_interface: "utmi" or "ulpi" * @connected: true when we're connected to a host, false otherwise * @softconnect: true when gadget connect is called, false when disconnect= runs @@ -1318,6 +1319,7 @@ struct dwc3 { u8 tx_max_burst_prd; u8 tx_fifo_resize_max_num; u8 clear_stall_protocol; + u16 num_hc_interrupters; =20 const char *hsphy_interface; =20 diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c index a171b27a7845..d883cd7b1615 100644 --- a/drivers/usb/dwc3/host.c +++ b/drivers/usb/dwc3/host.c @@ -180,6 +180,9 @@ int dwc3_host_init(struct dwc3 *dwc) if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) props[prop_idx++] =3D PROPERTY_ENTRY_BOOL("quirk-broken-port-ped"); =20 + props[prop_idx++] =3D PROPERTY_ENTRY_U16("num-hc-interrupters", + dwc->num_hc_interrupters); + if (prop_idx) { ret =3D device_create_managed_software_node(&xhci->dev, props, NULL); if (ret) {