Date: Sun, 14 May 2000 14:00:02 -0700 (PDT) From: Brian Candler <B.Candler@pobox.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/17605: matcd driver worked on 3.x but doesn't work anymore on 4.0-STABLE Message-ID: <200005142100.OAA70641@freefall.freebsd.org>
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The following reply was made to PR kern/17605; it has been noted by GNATS.
From: Brian Candler <B.Candler@pobox.com>
To: freebsd-gnats-submit@FreeBSD.org, rguyom@mail.dotcom.fr
Cc: Frank Durda IV <bsdmail@nemesis.lonestar.org>
Subject: Re: kern/17605: matcd driver worked on 3.x but doesn't work anymore on 4.0-STABLE
Date: Sun, 14 May 2000 21:59:47 +0100
I had the same problem here. I don't think it's exactly a typo (see the
author's note <20> in the source file), but thanks for providing a solution.
For someone who understands this stuff better than me: I have compiled a
kernel with 'options BUS_DEBUG', and have attached some excerpts from dmesg,
(1) with Remi's patch, and (2) unmodified kernel [except for a few
additional printf's of my own]
Looking at the unmodified kernel: when device_add_child_ordered is called,
it is asking for 'matcd' rather than 'matcdc' and fails.
Regards,
Brian Candler.
---------------------------------------------------------------------------
(1) Working: FreeBSD 4.0-RELEASE plus Remi's patch ("matcdc" -> "matcd" in
line 499)
...
May 14 21:01:25 karma /kernel: device_add_child_ordered:658: isa at nexus with order 0 as unit 0
May 14 21:01:25 karma /kernel: make_device:590: isa at nexus as unit 0
May 14 21:01:25 karma /kernel: devclass_find_internal:251: looking for isa
May 14 21:01:25 karma /kernel: devclass_add_device:533: (null) in devclass isa
May 14 21:01:25 karma /kernel: devclass_alloc_unit:483: unit 0 in devclass isa
May 14 21:01:25 karma /kernel: devclass_alloc_unit:522: now: unit 0 in devclass isa
May 14 21:01:25 karma /kernel: devclass_find_driver_internal:393: isa in devclass nexus
May 14 21:01:25 karma /kernel: device_probe_child:772: Trying isa
May 14 21:01:25 karma /kernel: [Entered isa_probe]
May 14 21:01:25 karma /kernel: devclass_find_internal:251: looking for isa
May 14 21:01:25 karma /kernel: devclass_add_driver:296: matcd
May 14 21:01:25 karma /kernel: compile_methods:216: matcd has 2 methods, wasting 152 bytes
May 14 21:01:25 karma /kernel: devclass_find_internal:251: looking for matcd
May 14 21:01:25 karma /kernel: devclass_find_internal:259: matcd not found, creating
May 14 21:01:25 karma /kernel: (wrap old_driver matcd)
May 14 21:01:25 karma /kernel: isa0: <ISA bus> on motherboard
May 14 21:01:25 karma /kernel: [Entered isa_attach]
May 14 21:01:25 karma /kernel: [Entering isa_probe_children]
May 14 21:01:25 karma /kernel: device_add_child_ordered:658: fdc at isa with order 1 as unit 0
...
May 14 21:01:28 karma /kernel: devclass_alloc_unit:522: now: unit 0 in devclass ppc
May 14 21:01:28 karma /kernel: device_add_child_ordered:658: matcd at isa with order 1 as unit 0
May 14 21:01:28 karma /kernel: make_device:590: matcd at isa as unit 0
May 14 21:01:28 karma /kernel: devclass_find_internal:251: looking for matcd
May 14 21:01:28 karma /kernel: devclass_add_device:533: (null) in devclass matcd
May 14 21:01:28 karma /kernel: devclass_alloc_unit:483: unit 0 in devclass matcd
May 14 21:01:28 karma /kernel: devclass_alloc_unit:522: now: unit 0 in devclass matcd
May 14 21:01:28 karma /kernel: device_add_child_ordered:658: ex at isa with order 1 as unit -1
...
May 14 21:01:32 karma /kernel: plip0: <PLIP network interface> on ppbus0
May 14 21:01:32 karma /kernel: devclass_find_driver_internal:393: matcd in devclass isa
May 14 21:01:32 karma /kernel: device_probe_child:772: Trying matcd
May 14 21:01:32 karma /kernel: [Entering isa_compat_probe]
May 14 21:01:32 karma /kernel: [op->driver->name=matcd, dvp->id_iobase=0230]
May 14 21:01:32 karma /kernel: [Probe: Yes]
May 14 21:01:32 karma /kernel: < In matcd_probe >>
May 14 21:01:32 karma /kernel: matcdc0: In probe i 0 y 4 port 230
May 14 21:01:32 karma /kernel: matcd0: size of port_hints 32
May 14 21:01:32 karma /kernel: < In doprobe(560,0) >>
May 14 21:01:32 karma /kernel: matcdc0: Probe found something
May 14 21:01:32 karma /kernel: matcd - Matsushita (Panasonic) CD-ROM Driver by FDIV, Version 1(26) 18-Oct-95
May 14 21:01:32 karma /kernel: matcd0 at port 0x230-0x233 on isa0
May 14 21:01:32 karma /kernel: matcdc: Attach dev c06d0540 id_unit 0
May 14 21:01:32 karma /kernel: matcdc0 Host interface type 0
May 14 21:01:32 karma /kernel: matcd0: Status byte 82 matcd0: [CR-5630.75]
May 14 21:01:32 karma /kernel: matcd0: driver is using old-style compatability shims
May 14 21:01:32 karma /kernel: devclass_find_driver_internal:393: ex in devclass isa
May 14 21:01:32 karma /kernel: device_probe_child:772: Trying ex
...
---------------------------------------------------------------------------
(2) Not working: FreeBSD 4.0-RELEASE unpatched
...
May 14 21:07:50 karma /kernel: device_add_child_ordered:658: isa at nexus with order 0 as unit 0
May 14 21:07:50 karma /kernel: make_device:590: isa at nexus as unit 0
May 14 21:07:50 karma /kernel: devclass_find_internal:251: looking for isa
May 14 21:07:50 karma /kernel: devclass_add_device:533: (null) in devclass isa
May 14 21:07:50 karma /kernel: devclass_alloc_unit:483: unit 0 in devclass isa
May 14 21:07:50 karma /kernel: devclass_alloc_unit:522: now: unit 0 in devclass isa
May 14 21:07:50 karma /kernel: devclass_find_driver_internal:393: isa in devclass nexus
May 14 21:07:50 karma /kernel: device_probe_child:772: Trying isa
May 14 21:07:50 karma /kernel: [Entered isa_probe]
May 14 21:07:50 karma /kernel: devclass_find_internal:251: looking for isa
May 14 21:07:50 karma /kernel: devclass_add_driver:296: matcdc
May 14 21:07:50 karma /kernel: compile_methods:216: matcdc has 2 methods, wasting 152 bytes
May 14 21:07:50 karma /kernel: devclass_find_internal:251: looking for matcdc
May 14 21:07:50 karma /kernel: devclass_find_internal:259: matcdc not found, creating
May 14 21:07:50 karma /kernel: (wrap old_driver matcdc)
May 14 21:07:50 karma /kernel: isa0: <ISA bus> on motherboard
May 14 21:07:50 karma /kernel: [Entered isa_attach]
May 14 21:07:50 karma /kernel: [Entering isa_probe_children]
May 14 21:07:50 karma /kernel: device_add_child_ordered:658: fdc at isa with order 1 as unit 0
...
May 14 21:07:53 karma /kernel: devclass_alloc_unit:522: now: unit 0 in devclass ppc
May 14 21:07:53 karma /kernel: device_add_child_ordered:658: matcd at isa with order 1 as unit 0
May 14 21:07:53 karma /kernel: make_device:590: matcd at isa as unit 0
May 14 21:07:53 karma /kernel: devclass_find_internal:251: looking for matcd
May 14 21:07:53 karma /kernel: devclass_find_internal:259: matcd not found, creating
May 14 21:07:53 karma /kernel: devclass_add_device:533: (null) in devclass matcd
May 14 21:07:53 karma /kernel: devclass_alloc_unit:483: unit 0 in devclass matcd
May 14 21:07:53 karma /kernel: devclass_alloc_unit:522: now: unit 0 in devclass matcd
May 14 21:07:53 karma /kernel: device_add_child_ordered:658: ex at isa with order 1 as unit -1
...
May 14 21:07:57 karma /kernel: plip0: <PLIP network interface> on ppbus0
May 14 21:07:57 karma /kernel: devclass_find_driver_internal:393: matcd in devclass isa
May 14 21:07:57 karma /kernel: devclass_find_driver_internal:400: not found
May 14 21:07:57 karma /kernel: devclass_find_driver_internal:393: ex in devclass isa
May 14 21:07:57 karma /kernel: device_probe_child:772: Trying ex
...
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