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Old PowerMac G5 [...] vs. USB [...] [RealTek EtherNet] devices (...) From: Mark Millard In-Reply-To: <20210201222854.GV31099@funkthat.com> Date: Tue, 2 Feb 2021 00:50:12 -0800 Cc: freebsd-ppc Content-Transfer-Encoding: 7bit Message-Id: References: <20210201194702.GU31099@funkthat.com> <1C53A656-75ED-4E7C-9FB0-6C605BCDEC14@yahoo.com> <20210201222854.GV31099@funkthat.com> To: John-Mark Gurney X-Mailer: Apple Mail (2.3654.40.0.2.32) X-Rspamd-Queue-Id: 4DVJRh5Lr2z4h1J X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.50 / 15.00]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US]; RBL_DBL_DONT_QUERY_IPS(0.00)[98.137.68.146:from]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; MID_RHS_MATCH_FROM(0.00)[]; SUBJECT_HAS_QUESTION(0.00)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; SPAMHAUS_ZRD(0.00)[98.137.68.146:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[98.137.68.146:from]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.68.146:from]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-ppc] X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Feb 2021 08:50:36 -0000 On 2021-Feb-1, at 14:28, John-Mark Gurney 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 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)