Date: Tue, 31 Jan 2017 16:36:04 -0700 From: Warner Losh <imp@bsdimp.com> To: John Baldwin <jhb@freebsd.org> Cc: Takahashi Yoshihiro <nyan@freebsd.org>, src-committers <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r312910 - in head: . etc/etc.pc98 etc/rc.d lib/libsysdecode libexec release release/doc release/doc/en_US.ISO8859-1/hardware release/doc/en_US.ISO8859-1/readme release/doc/share/example... Message-ID: <CANCZdfrhHupUY36_AxyZaZMDuM%2BaeFCLwzQry3XLyBrFNf=1LA@mail.gmail.com> In-Reply-To: <3458844.3oruRKbrzH@ralph.baldwin.cx> References: <201701280222.v0S2MFSR022477@repo.freebsd.org> <2911087.bbEsWibF87@ralph.baldwin.cx> <CANCZdfrKZGz35QNsV7oZizPGDVsYj5KBx4RF8FcqJ8E7ZoZzvw@mail.gmail.com> <3458844.3oruRKbrzH@ralph.baldwin.cx>
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On Tue, Jan 31, 2017 at 3:46 PM, John Baldwin <jhb@freebsd.org> wrote: > On Tuesday, January 31, 2017 03:33:55 PM Warner Losh wrote: >> On Tue, Jan 31, 2017 at 3:20 PM, John Baldwin <jhb@freebsd.org> wrote: >> > On Saturday, January 28, 2017 02:22:15 AM Takahashi Yoshihiro wrote: >> >> Author: nyan >> >> Date: Sat Jan 28 02:22:15 2017 >> >> New Revision: 312910 >> >> URL: https://svnweb.freebsd.org/changeset/base/312910 >> >> >> >> Log: >> >> Remove pc98 support completely. >> >> I thank all developers and contributors for pc98. >> >> >> >> Relnotes: yes >> > >> > BTW, my impression was that there are some other device drivers >> > that are effectively PC-98 only (e.g. everything that uses scsi_low.c) >> > but they might have pccard attachments for use with PC-98 laptops? >> > >> > Perhaps Warner might know? >> > >> > It seems stg(4) had PCI variants, but nsp(4), ncv(4), and stg(4) >> > all came from NetBSD/pc98 via PAO. >> >> These all work correctly on any PC Card machine. The only reason they >> came in this way was because these devices were original marketed only >> in Japan. I've used all these cards with external SCSI drives in the >> past. >> >> As far as I know, only the if_snc driver, which was removed, is truly >> pc98 specific. It is wired in such a way that cannot be used in ibm-at >> compatible laptops. IIRC, it had hard-wired memory decode lines that >> landed in the middle of the VGA graphics pages or BIOS low memory >> areas. I have one of these cards still, and it will be detected on my >> laptops, but can't work due to the required mappings. >> >> Now, there's an different question about whether it is time to retire >> some of the now-ancient SCSI cards from the system, but that's a >> different kettle of fish that's larger than just nsp, ncv and stg. > > Fair enough. I haven't fully put away my 12 axe and am toying with > dropping any ISA-only storage and NIC drivers (and perhaps pccard-only > as well in that case). Hardware that wants to use ISA/pccard for > storage is probably happier running 4.x anyway. One question is if we > should drop ISA attachments in that case for drivers that support PCI > and ISA. However, there's a fair list of ISA-only adapters that would > be a good place to start anyway. One concern is to not drop any drivers > that are commonly used in emulators or hypervisors (ed(4) comes to mind > though I think em(4) is probably available in any modern emulators or > hypervisors). ISA-only attachments would be a good place to start. My quick glance shows this would be le(4), aha(4), cm(4), mse(4), and joy(4). There's maybe half a dozen EISA-only drivers in the tree that I was planning on retiring in 12, along with EISA. Likewise with the MCA attachments. I know that ed, ep, ex, sn, fe and cs PC Card attachments still work, or did fairly recently. All of those also have ISA attachments. I have no clue if the ISA attachments work, though I still have some ISA systems, I got rid of all my SCSI and Network ISA cards some time ago. I had hoped to get all the pnp autoloading code going so we could remove them from GENERIC before the 11 branch, but keep them as modules. I ran out of time. However, there's still time for 12 though. Warner
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