From owner-freebsd-virtualization@freebsd.org Thu Mar 11 00:12:48 2021 Return-Path: Delivered-To: freebsd-virtualization@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 80DAC57BA52 for ; Thu, 11 Mar 2021 00:12:48 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4DwqCN2gwKz4tTN for ; Thu, 11 Mar 2021 00:12:48 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 5B30257BA51; Thu, 11 Mar 2021 00:12:48 +0000 (UTC) Delivered-To: virtualization@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5A96057BA50 for ; Thu, 11 Mar 2021 00:12:48 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DwqCN1DTnz4tTM for ; Thu, 11 Mar 2021 00:12:48 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 0DF3B1AC9E for ; Thu, 11 Mar 2021 00:12:48 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 12B0ClRZ089677 for ; Thu, 11 Mar 2021 00:12:47 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 12B0ClIs089676 for virtualization@FreeBSD.org; Thu, 11 Mar 2021 00:12:47 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 221074] Hyper V Gen 2 install has no mouse Date: Thu, 11 Mar 2021 00:12:47 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: misc X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: decui@microsoft.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Mar 2021 00:12:48 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221074 --- Comment #15 from Dexuan Cui --- (In reply to Vladimir Kondratyev from comment #14) Hi Vladimir, sorry I actually just did some research and didn't write any c= ode. :-) The Hyper-V/VMBus part of the driver should be straightforward, I'm just not familiar with the HID part. The core logic of the Hyper-V mouse driver in L= inux VM is Line 296~306 (https://github.com/torvalds/linux/blob/master/drivers/hid/hid-hyperv.c#L29= 6): IIRC, for every mouse event, the Hyper-V host sends a 7-byte "input_report", which in Linux VM is handled by the Linux HID API hid_input_report() and nothing else is done. In FreeBSD, I'm not sure what the equivalent API is? = -- I read the page you shared and I guess it may be: METHOD int get_report { device_t dev; void *data; hid_size_t maxlen; hid_size_t *actlen; uint8_t type; uint8_t id; }; I suppose the format of the 7 bytes from the Hyper-V host should comply with the HID spec for mouse (I guess there is a spec for this?), and if so, Free= BSD can use the 7 bytes directly, just like Linux VM does. I'm currently in the middle of something else, so sorry I can't work on this right now. I guess Wei (whu) on our team can help on this, and also review = the 2 kbd patches. --=20 You are receiving this mail because: You are the assignee for the bug.=