Date: Tue, 13 Aug 2019 21:09:52 -0700 From: Adrian Chadd <adrian.chadd@gmail.com> To: "james.m.parsons" <james.m.parsons@protonmail.com> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: rtwn driver Message-ID: <CAJ-Vmonrvd-37JQdfQTs696q=tzrADvPQEbSk263pJ61k0NBmg@mail.gmail.com> In-Reply-To: <URBHrbdLhZgIUNBZUqWPCqMdYbhMqC5AeNNyTsIC7sH9HNGWa_EkpiPvwl1gPTDQLS0oVi3-8qkurvALz1-CRBYZUUAN0ilWCa-6M6IK9g0=@protonmail.com> References: <URBHrbdLhZgIUNBZUqWPCqMdYbhMqC5AeNNyTsIC7sH9HNGWa_EkpiPvwl1gPTDQLS0oVi3-8qkurvALz1-CRBYZUUAN0ilWCa-6M6IK9g0=@protonmail.com>
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hi! Thanks for doing this! if it's the same chipset but a different ID then yes, it's literally that easy most times. :) Nice work! If you file a PR then we'll try to get someone to commit it to freebsd-head. -a On Sun, 11 Aug 2019 at 00:34, james.m.parsons via freebsd-wireless < freebsd-wireless@freebsd.org> wrote: > Good morning, > > A few weeks ago, I installed FreeBSD 12.0-RELEASE on a box that had an > [Asus PCE-N15](https://www.asus.com/us/Networking/PCEN15/) wireless > network card based on the Realtek RTL8192CE chipset. According to the man > page for the [rtwn]( > https://www.freebsd.org/cgi/man.cgi?query=rtwn&sektion=4&manpath=freebsd-release-ports) > driver, this card was supported, however the driver refused to attach. > Running pciconf -lv would show the device as none0, but had the correct > vendor information. > > Later on, after [inquiring on the forums]( > https://forums.freebsd.org/threads/issue-getting-realtek-wireless-network-card-rtwn-driver-working-on-new-freebsd-installation.71677/), > I decided to investigate the potential of patching the driver to work with > my card. When I finally sat down tonight to start on it, I found the fix > surprisingly simple. Looking at the driver source code under > /sys/dev/rtwn/pci/rtwn_pci_attach.h, I see an array containing the vendor > id's and device id's for PCI devices: > > static const struct rtwn_pci_ident rtwn_pci_ident_table[] = { > { 0x10ec, 0x8176, "Realtek RTL8188CE", RTWN_CHIP_RTL8192CE }, > { 0, 0, NULL, RTWN_CHIP_MAX_PCI } > }; > > I noticed the device id 0x8176 was different from my card, which was > reported as 0x8178. So I added to that array: > > { 0x10ec, 0x8178, "Realtek RTL8192CE", RTWN_CHIP_RTL8192CE }, > > And after building and installing a custom kernel with all the lines noted > in the above man page to the config, I rebooted, noticed the driver is now > attaching to the PCI device and have since been able to connect to my home > wifi without issue. > > Honestly, I'm a bit suspicious at the ease of fixing this issue, and am > not sure if this is something that should / could be contributed to the > kernel code. I'm also sure, there are other device id's that would need > added to have full support, but after asking some other people, I was > suggested to send an email to this address. > > Thanks, > James Parsons > _______________________________________________ > freebsd-wireless@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-wireless > To unsubscribe, send any mail to "freebsd-wireless-unsubscribe@freebsd.org > " >
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