From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (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 9F9E027FB2D; Tue, 12 Aug 2025 13:24:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755005101; cv=none; b=Fpq6XfkrjkLjUb7OT0dUNtIBfGGgMRz3MVHtJJXcodnxqkOQ4isTNVfo+M9cK3eO34er5t6COOijgpIc83sIJbziaR5HJebEIvwpmfd7oOzzPTApvL5d6YRwftVLw8uuASz+1zSQt8xPAefPh+WwdTJHxecNsP1RdWNGTNYi1wg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755005101; c=relaxed/simple; bh=xGAbYps5GPfkgb8ITBINxKpJM3S8sNZQ/8rXv2Y/pIk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=BEgU5645t8hBf177GJm4cx9WfGpYbnqnG/I4Mx5vjYfAhWcJv8iY7yNVgLvGmFN8Iwxrl0yYsH6D133KMDimp+2R4vZmRgmUAiLdKWZ2k7nj0MTINqsmGwivb8CJRQYlA31fSYoEpxlNRHUx43forYxEZ7N9azImcJ5+haGDg5Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Zb0nJZ7c; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Zb0nJZ7c" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1755005100; x=1786541100; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xGAbYps5GPfkgb8ITBINxKpJM3S8sNZQ/8rXv2Y/pIk=; b=Zb0nJZ7c67MVuvWMSqmr8n3i5Khi4q6x78MYXpodcBX0j1QxmJKSeYCN ClqdStGL+j0uiPqeXOXa3bJD6bOvLilcBN9UNGUd8ntxnSItz3znM9nKx sC3aR8gKF+Qkme8/yKrFO/+J7oIPGKU97/HPxgIWPF1CJNvWAS+53CMjP CVzBLRYsI3IPDCoJhiwnq//SwmgJ5iJlIayGtJlinQnHY0aSajZSxoUEM TWRyMWlU7dxlP/qaFLDtwurzYDq+hoUQCJDWWy9OAage+yDax3MegqP+b O+/vovcIkCcsJ97QM582XRYxA49kW4IQRkUbBH9/+S1DoD6Jt9IdcrLwD Q==; X-CSE-ConnectionGUID: MKPKNs1tRr2NXSVUh4eTRw== X-CSE-MsgGUID: dc3PQb9NT8OE+/sK0gNsfg== X-IronPort-AV: E=McAfee;i="6800,10657,11520"; a="68349681" X-IronPort-AV: E=Sophos;i="6.17,284,1747724400"; d="scan'208";a="68349681" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2025 06:24:53 -0700 X-CSE-ConnectionGUID: U0qPYmJRS+a3mJJd+f1CAg== X-CSE-MsgGUID: WfJhdVhxSouybC9VRdIvQw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,284,1747724400"; d="scan'208";a="166987268" Received: from bergbenj-mobl1.ger.corp.intel.com (HELO kekkonen.fi.intel.com) ([10.245.245.110]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2025 06:24:48 -0700 Received: from punajuuri.localdomain (unknown [192.168.240.130]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 2A80D11F91E; Tue, 12 Aug 2025 16:24:46 +0300 (EEST) Received: from sailus by punajuuri.localdomain with local (Exim 4.96) (envelope-from ) id 1uloze-00DMZp-00; Tue, 12 Aug 2025 16:24:46 +0300 Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo From: Sakari Ailus To: linux-usb@vger.kernel.org Cc: linux-media@vger.kernel.org, gregkh@linuxfoundation.org, laurent.pinchart@ideasonboard.com, hdegoede@redhat.com, Thinh.Nguyen@synopsys.com, Amardeep Rai , Kannappan R , Mathias Nyman , Alan Stern Subject: [PATCH v4 2/4] USB: core: support eUSB2 double bandwidth large isoc URB frames Date: Tue, 12 Aug 2025 16:24:43 +0300 Message-Id: <20250812132445.3185026-3-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250812132445.3185026-1-sakari.ailus@linux.intel.com> References: <20250812132445.3185026-1-sakari.ailus@linux.intel.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Rai, Amardeep" eUSB2 double isochronous in bandwidth devices support up to 6 transactions per microframe, and thus doubles the total bytes possible to receive per microframe. Support larger URB isoc frame sizes for eUSB2 double isoc in endpoints. Also usb_endpoint_maxp() returns a natural number so there's no need to assume it could be < 0. Signed-off-by: Rai, Amardeep Reviewed-by: Sakari Ailus Signed-off-by: Mathias Nyman Co-developed-by: Sakari Ailus Signed-off-by: Sakari Ailus Acked-by: Alan Stern --- drivers/usb/core/urb.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 7a76d5a62db1..6f8f3d751854 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -372,6 +372,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) struct usb_host_endpoint *ep; int is_out; unsigned int allowed; + bool is_eusb2_isoch_double; if (!urb || !urb->complete) return -EINVAL; @@ -434,7 +435,11 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) return -ENODEV; max = usb_endpoint_maxp(&ep->desc); - if (max <= 0) { + is_eusb2_isoch_double = dev->speed == USB_SPEED_HIGH && + usb_endpoint_is_isoc_in(&ep->desc) && + ep->eusb2_isoc_ep_comp.bDescriptorType && + le16_to_cpu(ep->desc.wMaxPacketSize) == 0; + if (!max && !is_eusb2_isoch_double) { dev_dbg(&dev->dev, "bogus endpoint ep%d%s in %s (bad maxpacket %d)\n", usb_endpoint_num(&ep->desc), is_out ? "out" : "in", @@ -467,9 +472,13 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) max = le32_to_cpu(isoc_ep_comp->dwBytesPerInterval); } - /* "high bandwidth" mode, 1-3 packets/uframe? */ - if (dev->speed == USB_SPEED_HIGH) - max *= usb_endpoint_maxp_mult(&ep->desc); + /* High speed, 1-3 packets/uframe, max 6 for eUSB2 double bw */ + if (dev->speed == USB_SPEED_HIGH) { + if (is_eusb2_isoch_double) + max = le32_to_cpu(ep->eusb2_isoc_ep_comp.dwBytesPerInterval); + else + max *= usb_endpoint_maxp_mult(&ep->desc); + } if (urb->number_of_packets <= 0) return -EINVAL; -- 2.39.5