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From: Marcel Moolenaar <xcllnt@mac.com>
To: Weongyo Jeong <weongyo.jeong@gmail.com>
In-reply-to: <20081115080915.GA61939@freebsd.weongyo.org>
Date: Wed, 19 Nov 2008 16:10:35 -0800
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Subject: Re: my problem using iBook G4
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On Nov 15, 2008, at 12:09 AM, Weongyo Jeong wrote:

> On Fri, Nov 14, 2008 at 09:25:34AM -0600, Nathan Whitehorn wrote:
>> Nathan Whitehorn wrote:
>>> Weongyo Jeong wrote:
>>>> Hello,
>>>>
>>>> I have a iBook G4 laptop but it has a problem when booting like as
>>>> follows:
>>>>
>>>>   http://weongyo.org/project/freebsd/images/20081114.jpg
>>>>
>>>> My booting steps are:
>>>>
>>>>   1. press <option>+<apple>+O+F
>>>>   2. 0 > boot cd:,\boot\loader hd:7
>>>>   3. then a panic during booting progress
>>>>
>>>> There's no problem to boot if I set `OK set hw.ata.atapi_dma=0'.  
>>>> Is it a
>>>> known issue?
>>>
>>> Well, Marcel has seen something similar with his CD drive, but I was
>>> hoping it was limited to his machine. If you are in a situation  
>>> where
>>> you can easily apply patches, could you try the attached one and  
>>> report
>>> what it prints for the firmware timing register? Marcel, could you  
>>> try
>>> this too?
>>
>> Naturally, I forgot the patch. It lives at
>> http://people.freebsd.org/~nwhitehorn/ata.debug.diff, and should be
>> applied to ata_kauai.c. Thanks!
>
> The below is the result written by my hand but expect the value is
> correct.
>
> ata1: <Intrepid Kauai ATA Controller> mem ~~~~~~~ irq 39 at device  
> 13.0
> on pci2
> ata1: Firmware configured PIO register: 0x6149246
> ata1: Firmware configured UDMA register: 0x2921

Same here:

ata1: <Intrepid Kauai ATA Controller> mem 0xf5004000-0xf5007fff \
	irq 39 at device 13.0 on pci2
ata1: Firmware configured PIO register: 0x6149246
ata1: Firmware configured UDMA register: 0x2921

FYI,

-- 
Marcel Moolenaar
xcllnt@mac.com