The drivers you mentioned (EHCI, OHCI) are device drivers for the Host Controller Interface (HCI) hardware. The 'usbcore' module sits on top of this layer and abstracts out the details for the layer on top of it - i.e the USB device drivers (or class drivers). You can read more here: http://www.lrr.in.tum.de/Par/arch/usb/usbdoc/node14.html HTH, -mandeep On 1/18/09, niamathullah sharief <shariefbe@xxxxxxxxxxx> wrote: > > Actually i mean the ehci-hcd,uhci-hcd and ohci-hcd etc...whats the use of > this drivers..and what is the use of "usbcore" driver....why this usbcore > and host drivers are needed to make the usb port work...Thanks for your > reply... > --- On Sun, 18/1/09, Mandeep Sandhu <mandeepsandhu.chd@xxxxxxxxx> wrote: > From: Mandeep Sandhu <mandeepsandhu.chd@xxxxxxxxx> > Subject: Re: About USB module > To: shariefbe@xxxxxxxxxxx > Cc: "Kernel newbies" <kernelnewbies@xxxxxxxxxxxx> > Date: Sunday, 18 January, 2009, 9:24 PM > > What do you exactly mean by "host drivers"?? > > Are you referring to USB class drivers? These sit on top of the HCI > drivers and implement > class specific functionality. The HCI driver directly interacts with > the underlying h/w...and > the class drivers interact with connected devices via this layer. THe > class drivers implement > specific USB classes like HID, CDC (ACM/ECM etc), mass storage etc etc > > HTH, > -mandeep > > On Sun, Jan 18, 2009 at 12:48 PM, niamathullah sharief > <shariefbe@xxxxxxxxxxx> wrote: >> Hello, >> >> I know that modules "usbcore" and "host drivers" > are needed to make USB >> port to work....but i dont why this host drivers really do...why it is >> needed?can anyone tell me..please >> >> ________________________________ >> Add more friends to your messenger and enjoy! Invite them now. > > > > Get perfect Email ID for your Resume. Grab now > http://in.promos.yahoo.com/address -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
