From owner-freebsd-hackers@freebsd.org Sat Aug 25 15:21:17 2018 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CA0A9108D641 for ; Sat, 25 Aug 2018 15:21:17 +0000 (UTC) (envelope-from yuripv@yuripv.net) Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7855B7479C for ; Sat, 25 Aug 2018 15:21:17 +0000 (UTC) (envelope-from yuripv@yuripv.net) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id CD2CD21B6A for ; Sat, 25 Aug 2018 11:21:16 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute5.internal (MEProxy); Sat, 25 Aug 2018 11:21:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yuripv.net; h= content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=SPHrM1otxIpkg43SGGhbs03ZoTSOCteendZSveasYko=; b=T2op22xj 46magpb4Bd+mG37iu9ARHF7VR3zJW20IRSWQViKGt376+Izpn3YjeCdqdq/uDGiD 20OB2Xdi/+wtbY67tW8/ObYkrflSbUzUS5qBO8zu5vbS9NDFBWkXwbaQEl0OKqSt e5UsU7ZARDqstua5r/pAjXOlyub5hnIn7p7Zibb4WhwBO/Dys6jsuI44FxwdMi7b serhLpOjP0e9ASlAaPHdNG9laNthNrJfuBR4hgDVUvWMwKXYlw2X6WKVXLXYO0fs 2HfOAPzC/rOIJzOMFa0pvQFyFtQ6vUmszOyyf9ePcG4DrDCWGSSrGSYoaT0oVOQK WdCU1IxWtm1AKg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-sender :x-me-sender:x-sasl-enc; s=fm3; bh=SPHrM1otxIpkg43SGGhbs03ZoTSOC teendZSveasYko=; b=Jl7aLeromQu1i3vyTUmScOU6ZYKTK0Lln4FiCp6sFVe8W eLGkXmAxX+v551Hyl8KobKK3flWSbr+1fsSu9hB6UfRZmH4B6nNkC2xOI2eNFnvx jcxoOFVk8/gpPwb8HJQZTau6WVLO5sGtxliIczRQXp2DUb0WrtWNZA3xal6lsB5A eNxAlhfBFzpifuMPcoWKiovj9xI3aTuNOTPZzbsnJBY9jXBCVgWSW9ftiLz17/xv 6tv2Wm2ljwvogbZE+nlgD/rgPdO9Sd1R5o7ib+bF7QMQPr2HMN6MzfZZUWwXz3oS n6edSd+phq69nxanIzKiLz/JyadqNC+bmzj8zKeyw== X-ME-Proxy: X-ME-Sender: Received: from odin.yuripv.net (unknown [94.233.224.99]) by mail.messagingengine.com (Postfix) with ESMTPA id A6518E474A for ; Sat, 25 Aug 2018 11:21:15 -0400 (EDT) To: freebsd-hackers From: Yuri Pankov Subject: pci bus rescan from userland Message-ID: <561d2b7b-b36a-7bee-bb23-fb7d0ff9a50b@yuripv.net> Date: Sat, 25 Aug 2018 18:21:14 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Aug 2018 15:21:18 -0000 Hi, Trying to enable the HDMI/DP sound output on NVIDIA Quadro M2200, I have found the following workaround on NVIDIA Linux forums (https://devtalk.nvidia.com/default/topic/1024022/linux/gtx-1060-no-audio-over-hdmi-only-hda-intel-detected-azalia/post/5211273/#5211273): setpci -s 01:00.0 0x488.l=0x2000000:0x2000000 rmmod nvidia-drm nvidia-modeset nvidia echo 1 > /sys/bus/pci/devices/0000:01:00.0/remove echo 1 > /sys/bus/pci/devices/0000:00:01.0/rescan modprobe nvidia-drm So far rmmod and modprobe steps are obvious, setpci works as well (I guess I could use pciconf? doesn't really matter). Is there a FreeBSD equivalent of doing the remove/rescan steps from userland?