On Mon, Dec 29, 2008 at 5:33 PM, Srinivas G. <srinivasg@xxxxxxxxxxxxxxxxxxxxx> wrote: >>On Fri, Dec 26, 2008 at 04:01:02PM +0530, Srinivas G. wrote: >>> Actually my requirement is a bit different. I wanted to develop my >>> custom driver in USB stack, which wanted to modify the data > transmitted >>> and received by storage class driver. >>> >>> Here is the place of the driver I am planning to implement. >>> >>> User Mode Driver >>> | >>> Storage Class Driver >>> | >>> MY CUSTOM DRIVER >>> | >>> Bus Class Driver >>> >>> In this case, Do I need to know the function calls supported by > "Storage >>> Class Drivers" and "Bus Class Drivers"? >>> Will there be any documentation available or any such type of >>> implementation available in any Linux flavor? >>> >>> Please let me know If I am missing any thing here. > >> I think you are missing the fact that the source to everything you are >> looking for here is avaible, so you can do whatever you want to it, no >> need to write a "filter" driver like Windows requires. > >> But the bigger questions is, why do you need to add a custom driver to >> the usb storage driver? What do you want to do in the kernel that the >> current usb storage driver in Linux doesn't already do? It is lacking >> some kind of needed functionality? > > Dear Greg, > > Thanks for your info. > > Please ignore my previous post. > > The current USB storage system is not lacking of any thing. > > My requirement is to develop a driver for my custom device which can > queue the commands with the corresponding increase in the performance. > This will make my USB device to work faster than regular rates. One way > I can do this by modifying the storage class driver to suite my > requirements. But I wanted to have better Modularity and Extensibility > for the future versions of USB/storage class driver. With this design I > will use the regular USB stack, mass storage class driver structure in > addition to the newly added custom driver layer as I explained in my > previous figure. > > Please suggest me. > > Thanks and Regards, > Srinivas G I am also having the similar requirement. My requirement is to develop a driver for UASP (USB Attached SCSI Protocol) driver, without effecting the existing USB sub system. I didn't find any HOW-TO documents about Liunx USB stacking as Srinivas G said. -RD -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
