From patchwork Wed Nov 6 19:33:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 841333 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 9521C20B1E9; Wed, 6 Nov 2024 19:34:46 +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=1730921688; cv=none; b=oDGK/uTIL7ScoJv2RgOadlwuQ8X3eJn6qNwiL26JtwOzHoIBLecsFZK/crHyVrT95H28cBSeuWl/M1oxo+MfYSbO23NUCAkIqqa287Uw01NfVpcXjTPlWvjxl9e1dOf0ZOEzFcuyaLfT4xeUcfHC/unyI9u6q1q6VGfuKX9JshU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730921688; c=relaxed/simple; bh=S6FMCZqhVORDjmGIdqc8rXu1RNcS+gjVrsIOxyBtOW8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=aMx9205ptmTp1yOJivwRlPlYnxDVcZ9zMPv8KQRuFASOKv3P3qDNr9+iH/ydgaq10fJe6djd1/71bVNJZCXBOZ3POjFQzkchEB+L6dHSYU0Z89P1FLUGGXA9WW+LpgOZn2+gFxX3G+fAgtEhVCZQTzdkQN+6tTg+Mlsi+9Exlcc= 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=pvQ20/tL; 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="pvQ20/tL" 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 4A6G9I1g024567; Wed, 6 Nov 2024 19:34:31 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= bioXrssGHt22KXnwOvG5MvHodH36aHbdDnMMtMovjy4=; b=pvQ20/tLlyO+N0T1 h96RTp1rm2cFCPPaE0mjac2/IefoiEp0OLnEATzAjAX0ronTfi8KFBhRSYBiu6Mk D+kqPLpt7VYUogbjr3kkCq+NlPAVnG7G8n/l0Gj3P4UnrPKq7qpEzfqrVCE8F86h SAfJHCk2+8RTsmI8G12Ad3Bb1PL+qEVpJ8XHGLhy2zCoJEJ0DT89shUdB7BJFcq9 wRWXLBcvvaKmwz9ZIGu8sBiU9AeBMrGxK00527b+sN8gnS/EVNfjZKHiK5WB7jtT gMLLxdovQY3qB/kexRt91lxFbIFNgpG0p6xOCFQfjM8XD1t2jw+N1nqLpPywXHOe wJN88A== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 42r2ugt4yx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 Nov 2024 19:34:31 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA03.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4A6JYUC5003973 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 6 Nov 2024 19:34:30 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; Wed, 6 Nov 2024 11:34:29 -0800 From: Wesley Cheng To: , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v30 04/30] usb: host: xhci-mem: Allow for interrupter clients to choose specific index Date: Wed, 6 Nov 2024 11:33:47 -0800 Message-ID: <20241106193413.1730413-5-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241106193413.1730413-1-quic_wcheng@quicinc.com> References: <20241106193413.1730413-1-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: gH_O-TLzL0txk96D-5qOX6fYa_B78s-f X-Proofpoint-GUID: gH_O-TLzL0txk96D-5qOX6fYa_B78s-f 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 lowpriorityscore=0 adultscore=0 mlxscore=0 suspectscore=0 priorityscore=1501 phishscore=0 clxscore=1015 impostorscore=0 malwarescore=0 bulkscore=0 mlxlogscore=760 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411060149 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-sec-intr.c | 5 +++-- drivers/usb/host/xhci.h | 2 +- include/linux/usb/xhci-sec-intr.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 f6cfc989e28e..598d0b92c6fe 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2338,14 +2338,15 @@ 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); @@ -2353,15 +2354,18 @@ 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) { @@ -2377,7 +2381,7 @@ 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-sec-intr.c b/drivers/usb/host/xhci-sec-intr.c index b112c3388368..80d889979f30 100644 --- a/drivers/usb/host/xhci-sec-intr.c +++ b/drivers/usb/host/xhci-sec-intr.c @@ -273,7 +273,7 @@ EXPORT_SYMBOL_GPL(xhci_sec_intr_get_event_buffer); */ int xhci_sec_intr_create_interrupter(struct xhci_sec_intr *si, int num_seg, - bool ip_autoclear, u32 imod_interval) + bool ip_autoclear, u32 imod_interval, int intr_num) { int ret = 0; @@ -287,7 +287,8 @@ xhci_sec_intr_create_interrupter(struct xhci_sec_intr *si, int num_seg, } si->ir = xhci_create_secondary_interrupter(xhci_to_hcd(si->xhci), - num_seg, imod_interval); + num_seg, imod_interval, + intr_num); if (!si->ir) { ret = -ENOMEM; goto out; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index cde0105a7f1e..a95adbfc583b 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-sec-intr.h b/include/linux/usb/xhci-sec-intr.h index f6edb27b1d99..6e9b891bdced 100644 --- a/include/linux/usb/xhci-sec-intr.h +++ b/include/linux/usb/xhci-sec-intr.h @@ -59,7 +59,7 @@ xhci_sec_intr_get_event_buffer(struct xhci_sec_intr *si); int xhci_sec_intr_create_interrupter(struct xhci_sec_intr *si, int num_seg, - bool ip_autoclear, u32 imod_interval); + bool ip_autoclear, u32 imod_interval, int intr_num); void xhci_sec_intr_remove_interrupter(struct xhci_sec_intr *si);