--- Kirill Messel <kirill.messel@mtu-net.ru> wrote: > Hi, > > I have a pci card. But i don't understand how can i write driver > for it. > Should it be char device, block device, or proc device or anything > else? > For example, can use in user programm "pci_find_device" function > and how > can i? > To determine whether to write a char driver or a block driver, determine how your PCI device transfers data. If it transfers data in variable length "streams", write a char driver. If it transfers data in fixed size "chunks", otherwise known as blocks, write a block driver. In reality, most drivers are char drivers. Typically, only those devices which meet some form of the ATA/ATAPI spec...such as hard drives, CD-ROMs/DVDs and Tapes use block drivers. Block drivers are *special*...resist wrting one until you *have* to. Trust me. See http://www.linuxhq.com/kernel/v2.4/doc/pci.txt.html Also, remember that Rubini and Corbet and online at http://www.xml.com/ldd/chapter/book/index.html Harmony, --Christine __________________________________________________ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
