Hi Chris,
Thanks for the response!
> You might want to start out with what you are trying to achieve. Are
> you trying to send commands from kernel-level code or user-level code?
Preferably user-level.
> If the latter, you might want to check out the sample code found in /
> Developer/Examples/IOKit/scsi/SCSITaskLib and consult Accessing
> Hardware From Applications (http://developer.apple.com/documentation/
> DeviceDrivers/Conceptual/AccessingHardware/AH_Intro/
> chapter_1_section_1.html).
I've read these now (thanks for the pointer), and also consulted the
example code, but I'm still confused. The problem for me is that this all
seems geared towards CD/DVD authoring and authoring-capable devices. For
my application authoring doesn't matter. All I "need" to do is send a
small subset of the MMC-2 commands to the drive to access an audio CD. I
have had some success creating an MMCDeviceInterface, but that really
doesn't help me because I can't obtain exclusive access from
SCSITaskDeviceInterface. Even if I could, I'm not sure how that would
help me because I really don't want to send raw SCSI tasks. I still don't
understand enough about IOServiceGetMatchingServices to know which key to
pass in to try and get an IOSCSIMultimediaCommandsDevice.
Stephen
>
> HTH,
>
> -- Chris
>
>
> On Jan 24, 2006, at 2:30 PM, email@hidden wrote:
>
>> I will start by saying the IOKit is pretty much a black box for
>> me. I've
>> done only basic tasks such as creating a dictionary and calling
>> IOServiceGetMatchingServices for it. Unless I've missed something,
>> the
>> IOKit documentation is slightly less than stunning so I'm asking
>> for help
>> here.
>>
>> I want to create an IOSCSIMultimediaCommandsDevice for accessing an
>> audio
>> CD using MMC-2 commands.
>>
>> If I may rant for a moment, the superclass to
>> IOSCSIMultimediaCommandsDevice is IOSCSIPrimaryCommandsDevice
>> defined in
>> "IOSCSIPrimaryCommandsDevice.h". I don't even have that header
>> file in my
>> 10.4u SDK! It's only in the 10.3.9 IOKit. To boot, that class'
>> superclass is IOSCSIProtocolInterface which also appears only to
>> exist in
>> my 10.3.9 SDK.
>>
>> Anyway, IOSCSIMultimediaCommandsDevice is a subclass of IOService.
>> Can
>> anyone step me through how I would go about obtaining an instance
>> of this
>> class?
>>
>> Thanks!
>> _______________________________________________
>> Do not post admin requests to the list. They will be ignored.
>> Darwin-dev mailing list (email@hidden)
>> Help/Unsubscribe/Update your Subscription:
>> http://lists.apple.com/mailman/options/darwin-dev/email@hidden
>>
>> This email sent to email@hidden
>
>
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/darwin-dev/email@hidden
This email sent to email@hidden
