ehci memory allocation question
Oliver Neukum <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Hi, I've been looking at memory management in ehci. IMHO to cleanly solve the deadlock, callers need a way to pass down memory reserves to the HCD. As they are unique to the bus, this needs a method to allocate such reserves from the HCD. So a few questions arise. 1. Can every HCD compute how much reserves it would need in the worst case to transfer one buffer of a given size over a given endpoint? 2. Can the SCSI layer deal with partially executed sg requests? Regards Oliver ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel