From patchwork Wed Mar 19 00:51:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 875189 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 89BA01DF269; Wed, 19 Mar 2025 00:52:20 +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=1742345543; cv=none; b=iFKyT3+MTijEBoAfHOjyi8YF1X8BYxLBdL3gaw8849WDBaxBvq1JhpQezMgRk4l+byBRIPSv9j0GIcVTJxumIz8hvbXPNJXzrMmdyqbIANFxBdPLS602VMqv6S3fmDWQobIVTY+qWN3BmEMRtu6KUGy7UCPF7xF7wmeiQdBfrUY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742345543; c=relaxed/simple; bh=1aJdXUM20UN0rSY4QYdGf2TefFYLaQ0p9R9tuTvTf8M=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=KbL4MIcGrV0gXhROhyNi1X9O3S9AC3OKUo5WdpFWhwlqEdPmaSR4mrGfSqW80xzbEB+MLv6yiudq4AAXNtnAjMKYDgmCfsVpCWi3JeMAzAKd1ENtY3at+NdO7W8kduCIjL9vDTK6N2ttS+oW1o3cH+7t7lxG6c7miS2W8wB9Vco= 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=Sk78Ajtu; 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="Sk78Ajtu" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 52IHCZ2c003887; Wed, 19 Mar 2025 00:51:53 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= tZo7UIfp8ORx/UeRfBvKaVA3J5U0H0h35XimLm1Co5U=; b=Sk78AjtuuAotSdRB zq8T9oBab43UhkWzstsqxF8Xc3IXH5G3iU19+Nqdxb+s4+bdfOxfKN+ECZ2wQ3w/ 9E878dXpx6Dn5e9Rwd/RE3kVp/RJx2G65Eo7LlRVon0c1wFqhFFpVkYUYtufSt6t v0uzDRn0lWeYzDHvp1mJOWUPB9DDawOmXONKjsQfKWytfURBWJPK8sX1iLKOYt7C j5aVzy9xmELEkDBpifu06BNTkMCjvpSZGLWDKTiGmyYo/d6wrxPR2PL6uho4ZA08 iy2tE/SZ/fMlSNqlWATHswVwkPQ5o0vjeR4MdmL/DmCzFM/QZ9xku0bpcNXwEwvC 56TeUA== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 45fd1dgwjf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Mar 2025 00:51:53 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 52J0pqiJ025693 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Mar 2025 00:51:52 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, 18 Mar 2025 17:51:51 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v36 03/31] usb: host: xhci-mem: Allow for interrupter clients to choose specific index Date: Tue, 18 Mar 2025 17:51:13 -0700 Message-ID: <20250319005141.312805-4-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250319005141.312805-1-quic_wcheng@quicinc.com> References: <20250319005141.312805-1-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: 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-ORIG-GUID: T1sh8r92j0cdkbPPtHKYnvOiKg3FC5QN X-Proofpoint-GUID: T1sh8r92j0cdkbPPtHKYnvOiKg3FC5QN X-Authority-Analysis: v=2.4 cv=T52MT+KQ c=1 sm=1 tr=0 ts=67da1529 cx=c_pps a=ouPCqIW2jiPt+lZRy3xVPw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=3H110R4YSZwA:10 a=Vs1iUdzkB0EA:10 a=COk6AnOGAAAA:8 a=Z3g1u8NuxWO0OEk4FSMA:9 a=0bXxn9q0MV6snEgNplNhOjQmxlI=:19 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-18_10,2025-03-17_03,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 mlxscore=0 clxscore=1015 mlxlogscore=862 lowpriorityscore=0 phishscore=0 spamscore=0 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503190003 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 | 24 ++++++++++++++---------- drivers/usb/host/xhci-sideband.c | 5 +++-- 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 daea0f76e844..ed36df46b140 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2331,14 +2331,15 @@ 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); @@ -2346,15 +2347,18 @@ 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]) { + err = xhci_add_interrupter(xhci, ir, i); + break; + } } + } else { + if (!xhci->interrupters[intr_num]) + err = xhci_add_interrupter(xhci, ir, intr_num); } - spin_unlock_irq(&xhci->lock); if (err) { @@ -2370,7 +2374,7 @@ xhci_create_secondary_interrupter(struct usb_hcd *hcd, unsigned int segs, i, 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 19c58ae60414..742bbc6c2d9b 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 +273,8 @@ 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 3fa8669e3b2d..7eaabe4f6c87 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1853,7 +1853,7 @@ 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 4b382af892fa..f8722afb8a2d 100644 --- a/include/linux/usb/xhci-sideband.h +++ b/include/linux/usb/xhci-sideband.h @@ -66,7 +66,7 @@ struct sg_table * 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); int