From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Date: Fri, 19 Jan 2001 02:29:16 +0000 Subject: Re: 1394 SPB-2 Drives Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-hotplug@vger.kernel.org Mark -- > So, I think part of the issue here is that the 1394 stack is going to > have a fairly low level part that is handling the hardware part of notifying > the system that something has happened. Above that the 1394 stack will > probably need to let the hot plugging system know about certain device > changes, but possibly not about all devices. Do you see this software being > responsible when I plug in 1394 printers, cameras, speakers, home theatre > equipment, as well as disk drives? I'm not clear... Yes, I see that stack handling all such notifications because, as you noted, 1394 is more USB-like than SCSI-like when it comes to hotplugging. More different kinds of device; isochrony; and so on. Very much in particular, disks aren't the "typical 1394" device (I think of video :-). Oliver -- > As there are a lot of device on a firewire bus, it probably can't use the > pseudo host controller hack. And shouldn't - it's a hack, which is > unfortunately necessary for usb. I don't know where that came from, but notice I never said anything about such stuff. In fact, neither does the firewire code I glanced at -- Initiator/Target is the terminology. > At present hotplugging in this driver sucks and will continue to > do so until the scsi subsystem is extended. I didn't see any hooks to scsi in drivers/ieee1394, so this also seems unrelated to the basic hotplug checklist I gave. Perhaps you're referring to a specific driver that's not in that directory of generic 1394 code? > Even then for configuration there's a need to further support. > The raw news about a device is of little use. You need the information about > partitions and other things. Once the bus code has hotplugged a disk-style device so that a block device driver is hooked in, then yes -- then you need partition info. But that's pretty late in the game, and can't apply to devices like video cameras or a VCR. - Dave _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net http://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel