Date: Tue, 2 Feb 2021 00:50:12 -0800 From: Mark Millard <marklmi@yahoo.com> To: John-Mark Gurney <jmg@funkthat.com> Cc: freebsd-ppc <freebsd-ppc@freebsd.org> Subject: Re: Expected issue? Old PowerMac G5 [...] vs. USB [...] [RealTek EtherNet] devices (...) Message-ID: <E816D2B1-177B-4D7C-90D0-442B1A446A44@yahoo.com> In-Reply-To: <20210201222854.GV31099@funkthat.com> References: <E79AA0EA-FAAE-412E-BB26-A66D9AB00AB8@yahoo.com> <EF3494BA-2B9C-43A5-931F-45313B3BDA7D@yahoo.com> <20210201194702.GU31099@funkthat.com> <1C53A656-75ED-4E7C-9FB0-6C605BCDEC14@yahoo.com> <20210201222854.GV31099@funkthat.com>
index | next in thread | previous in thread | raw e-mail
On 2021-Feb-1, at 14:28, John-Mark Gurney <jmg at funkthat.com> wrote: > Mark Millard wrote this message on Mon, Feb 01, 2021 at 13:34 -0800: >> On 2021-Feb-1, at 11:47, John-Mark Gurney <jmg at funkthat.com> wrote: >> >>> Mark Millard wrote this message on Sun, Jan 31, 2021 at 13:45 -0800: >>>> . . . >>>> So far it seems to be working just fine. I'm using it >>>> without hw.usb.xhci.use_polling=1 . >>> >>> Is the axge a USB3 or USB3 device? The driver attached to both... >> >> The axge, like all my USB Ethernet devices, is USB3 capable but >> is supposed to support use in USB2 contexts. The PowerMac, of >> course, is old and only has USB2. > > Then why bother w/ xhci? Since that should apply only to USB3 > controllers... If your mac isn't USB3 compatible, shouldn't be > detected/probed/used, and you should only have ehci... > > This is why I was puzzled, tweaking xhci implies that the system is > USB3 capable... > > (if xhci changes USB2 behavior, then it needs to be renamed)... Given the variability in behavior I'm seeing, I likely mistook an accidental correspondence back during the summer as a "this makes a difference for whatever reason". I had left material around to remind me that I'd used hw.usb.xhci.use_polling=1 back then, but not any detail. Technically I do not have the knowledge of the software structure to rule out its getting to ehci support indirectly. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E816D2B1-177B-4D7C-90D0-442B1A446A44>