From patchwork Fri Aug 23 20:00:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 822150 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 4EFC2198A03; Fri, 23 Aug 2024 20:01:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724443315; cv=none; b=o0DItKEMEq/3CeLJrYQEnuTPyPVFEkcTcqe3CtBU4i1t7zfNHfNghvsKyMTp+L6cqCS64j0PE7D8KWsx+hRbbmL2pAIsgnYaEZXLLqqgXg2uOZyKWpfIdpyEfLvpXukMBIhBb7So83YsOXcgx9ZDFvFF5dxvIekGwnCyId94wVg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724443315; c=relaxed/simple; bh=6cTiKJZbNpN8AUi5cOKTUz/lEq9n8nbVr/C33GwDZVc=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=f0pxs9tQtaTCdlW300Z+/ay3UxeSeWouXbweubdCg9FbPIuO1991lZsM+TmCNbBxtn1WWrw2UTk7SQOtPfVT3HQhJdEiyNbp+fCMBy6rOfeWBZ3u+Z6FNB2IlG0ey1pX8IlsDvPb7bV8X5eOwaZkVhj+A3aXd+5GUhrkfPb0JkU= 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=LIV/6ZYK; arc=none smtp.client-ip=205.220.168.131 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="LIV/6ZYK" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 47NEx45x018225; Fri, 23 Aug 2024 20:01:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=qcppdkim1; bh=hgtVT+ZFj/AR1TMF/xeke6UA K/PqaDLDniRc+tttYHM=; b=LIV/6ZYKoWRsPBqvDuAkhClMkwbxN+GrIbWxdOcj oEE+6zoseJYOpFNcoE9uBxJFUALKB8ziHJuUERm8oNa2PfRfBboc8MgBBwgCcmjZ wejaGISWCRLfIlVoPPOVa1DUFztM2BjIRa2Und4LewPyePmntf4SIQlO8RKiblaP vuMZUBwN3dRBfiaLFXRMCYbjDPPcPQQjnk7q1dnkonEgSGH1EIegxlEbN5wOSig7 NgruNVyaoh+QnPa7hF2QIQrfdkZ99C73GaxgydKKwHOcsRAhIsBPiL+NVFO3Jwgu RvRxQ6P2PuxoNXqae2ZJjcxqgebxpArjxvtMnhngUcqByQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 416vntgk99-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 23 Aug 2024 20:01:16 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 47NK1FdR001757 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 23 Aug 2024 20:01:15 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; Fri, 23 Aug 2024 13:01:14 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v25 06/33] usb: host: xhci-mem: Allow for interrupter clients to choose specific index Date: Fri, 23 Aug 2024 13:00:34 -0700 Message-ID: <20240823200101.26755-7-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240823200101.26755-1-quic_wcheng@quicinc.com> References: <20240823200101.26755-1-quic_wcheng@quicinc.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) 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: dKbN5OO21dKVsb22h1MRwghb_fTQ3CD3 X-Proofpoint-ORIG-GUID: dKbN5OO21dKVsb22h1MRwghb_fTQ3CD3 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-23_16,2024-08-23_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 spamscore=0 impostorscore=0 mlxscore=0 bulkscore=0 clxscore=1015 mlxlogscore=783 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408230147 Some clients may operate only on a specific XHCI interrupter instance. Allow for the associated class driver to request for the interrupter that it requires. Signed-off-by: Wesley Cheng --- drivers/usb/host/xhci-mem.c | 25 +++++++++++++++---------- drivers/usb/host/xhci-sideband.c | 4 ++-- drivers/usb/host/xhci.h | 2 +- include/linux/usb/xhci-sideband.h | 2 +- 4 files changed, 19 insertions(+), 14 deletions(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 60dfc59260d8..9e2cd962f164 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2340,14 +2340,15 @@ xhci_add_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir, struct xhci_interrupter * xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs, - u32 imod_interval) + u32 imod_interval, unsigned int intr_num) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct xhci_interrupter *ir; unsigned int i; int err = -ENOSPC; - if (!xhci->interrupters || xhci->max_interrupters <= 1) + if (!xhci->interrupters || xhci->max_interrupters <= 1 || + intr_num >= xhci->max_interrupters) return NULL; ir = xhci_alloc_interrupter(xhci, segs, GFP_KERNEL); @@ -2355,15 +2356,18 @@ xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs, return NULL; spin_lock_irq(&xhci->lock); - - /* Find available secondary interrupter, interrupter 0 is reserved for primary */ - for (i = 1; i < xhci->max_interrupters; i++) { - if (xhci->interrupters[i] == NULL) { - err = xhci_add_interrupter(xhci, ir, i); - break; + if (!intr_num) { + /* Find available secondary interrupter, interrupter 0 is reserved for primary */ + for (i = 1; i < xhci->max_interrupters; i++) { + if (xhci->interrupters[i] == NULL) { + err = xhci_add_interrupter(xhci, ir, i); + break; + } } + } else { + if (xhci->interrupters[intr_num] == NULL) + err = xhci_add_interrupter(xhci, ir, intr_num); } - spin_unlock_irq(&xhci->lock); if (err) { @@ -2374,8 +2378,9 @@ xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs, } xhci_set_interrupter_moderation(ir, imod_interval); + xhci_dbg(xhci, "Add secondary interrupter %d, max interrupters %d\n", - i, xhci->max_interrupters); + ir->intr_num, xhci->max_interrupters); return ir; } diff --git a/drivers/usb/host/xhci-sideband.c b/drivers/usb/host/xhci-sideband.c index f06bb49ede4d..b69d3e94432f 100644 --- a/drivers/usb/host/xhci-sideband.c +++ b/drivers/usb/host/xhci-sideband.c @@ -259,7 +259,7 @@ EXPORT_SYMBOL_GPL(xhci_sideband_get_event_buffer); */ int xhci_sideband_create_interrupter(struct xhci_sideband *sb, int num_seg, - bool ip_autoclear, u32 imod_interval) + bool ip_autoclear, u32 imod_interval, int intr_num) { int ret = 0; @@ -273,7 +273,7 @@ xhci_sideband_create_interrupter(struct xhci_sideband *sb, int num_seg, } sb->ir = xhci_create_secondary_interrupter(xhci_to_hcd(sb->xhci), - num_seg, imod_interval); + num_seg, imod_interval, intr_num); if (!sb->ir) { ret = -ENOMEM; goto out; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 6e1198082b4f..49786ea5bdc1 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1833,7 +1833,7 @@ void xhci_free_container_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); struct xhci_interrupter * xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs, - u32 imod_interval); + u32 imod_interval, unsigned int intr_num); void xhci_remove_secondary_interrupter(struct usb_hcd *hcd, struct xhci_interrupter *ir); void xhci_skip_sec_intr_events(struct xhci_hcd *xhci, diff --git a/include/linux/usb/xhci-sideband.h b/include/linux/usb/xhci-sideband.h index dd4b1a27c08d..a6d8b9a86da4 100644 --- a/include/linux/usb/xhci-sideband.h +++ b/include/linux/usb/xhci-sideband.h @@ -56,7 +56,7 @@ xhci_sideband_get_event_buffer(struct xhci_sideband *sb); int xhci_sideband_create_interrupter(struct xhci_sideband *sb, int num_seg, - bool ip_autoclear, u32 imod_interval); + bool ip_autoclear, u32 imod_interval, int intr_num); void xhci_sideband_remove_interrupter(struct xhci_sideband *sb);