From patchwork Tue May 7 19:50:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13657743 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 A781416F299; Tue, 7 May 2024 19:51:53 +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=1715111515; cv=none; b=S9dLMzWIvoK8YZJjM4kQSzZZ9PGWi5NChBh4IcTr7W9iKDBgQiA0apHM9IS8lNGKYT2WngUPww84ZsAUHxhp51k91JBcEa4Rus9EIxmMk6nZdEGXDh/qiufz9xNFQgiXx2+N8LcOsgoUTxNYmU1mAeyKda0iE1PTom1cvdIBG8Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715111515; c=relaxed/simple; bh=WfA9uKLPVLPNPoWCWpxktRP+aRYQDZyEnQeukM93VWM=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=teEAUMrXXmuxZwd05eHJLOM++U9EJkpHpb2WG4uynYnQbruRHHeXqwNJYotZew0/sbRAMDzpKnLzL1U+lKjgHtAfso5h73thHx7ZlHUymrMoId0Vv7bsk0mJqBILdnr95HSlFiXHo27LTSKH/SnlMpyCWrjDNbEDvlnMiMnPXEo= 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=E3ZjkdH7; 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="E3ZjkdH7" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 447JlHoP006493; Tue, 7 May 2024 19:51:31 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-type; s=qcppdkim1; bh=rRbPVi0qPYfWtzwfh+D3 Yj2r1S5F1Dydze+MqRJ6Pbk=; b=E3ZjkdH7yr2S0QoXLZOgB6pHct3hUsaege+d lTbWOiCRMhu0yhBw/H6wWN8bqgO6cPdUBpCkG+uJpShVdNPTB/I1ZedWYuGhPB07 SmauC7vkOVWec9mkAbfoRlkWBme5Z9txHPTcGby4IFm3suM0AS7iD8lktHJFOipr dsiWRsLf5HdZGSfLxc65DMVOQmUWMisWi4DAKvwZeAQppGQF29gGFQNM5NfV415U Sz0YIQZyFuy9kCLD/Vz17Lhs1Zsb2u/1zd8vsAWz9yNndxO8o25VcxxcwKPYlT7k Z/0Kh1EOFYfxLq2huDpkRzCxW9mLxhv0N9oy5KiCX3rZccQi/A== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3xysg405uv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 May 2024 19:51:30 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 447JpTGN019768 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 7 May 2024 19:51:29 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; Tue, 7 May 2024 12:51:28 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v21 06/39] usb: host: xhci-mem: Allow for interrupter clients to choose specific index Date: Tue, 7 May 2024 12:50:43 -0700 Message-ID: <20240507195116.9464-7-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240507195116.9464-1-quic_wcheng@quicinc.com> References: <20240507195116.9464-1-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: YHOGf0iN3t4eMjKWWIF_CRIpxMWUC73_ X-Proofpoint-ORIG-GUID: YHOGf0iN3t4eMjKWWIF_CRIpxMWUC73_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-05-07_12,2024-05-06_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 phishscore=0 spamscore=0 mlxlogscore=773 impostorscore=0 mlxscore=0 lowpriorityscore=0 clxscore=1015 malwarescore=0 priorityscore=1501 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405010000 definitions=main-2405070138 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 | 29 ++++++++++++++++------------- drivers/usb/host/xhci-sideband.c | 4 ++-- drivers/usb/host/xhci.h | 2 +- include/linux/usb/xhci-sideband.h | 2 +- 4 files changed, 20 insertions(+), 17 deletions(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 60dfc59260d8..997e8f27acb8 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2340,7 +2340,7 @@ 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, int intr_num) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct xhci_interrupter *ir; @@ -2355,29 +2355,32 @@ 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 > 0 && i == intr_num) || intr_num <= 0) { + if (xhci->interrupters[i] == NULL) { + err = xhci_add_interrupter(xhci, ir, i); + if (err) { + spin_unlock_irq(&xhci->lock); + goto free_ir; + } + break; + } } } - spin_unlock_irq(&xhci->lock); - if (err) { - xhci_warn(xhci, "Failed to add secondary interrupter, max interrupters %d\n", - xhci->max_interrupters); - xhci_free_interrupter(xhci, ir); - return NULL; - } - xhci_set_interrupter_moderation(ir, imod_interval); + xhci_dbg(xhci, "Add secondary interrupter %d, max interrupters %d\n", i, xhci->max_interrupters); return ir; + +free_ir: + xhci_free_interrupter(xhci, ir); + + return NULL; } EXPORT_SYMBOL_GPL(xhci_create_secondary_interrupter); diff --git a/drivers/usb/host/xhci-sideband.c b/drivers/usb/host/xhci-sideband.c index 7e7b15ec0cc7..690a08c8ed7f 100644 --- a/drivers/usb/host/xhci-sideband.c +++ b/drivers/usb/host/xhci-sideband.c @@ -254,7 +254,7 @@ 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; @@ -268,7 +268,7 @@ 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 35e5079ce621..bf50b56fef14 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, 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 5fc95dd499aa..1231821b2947 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);