Is serial_core.c the tty core?

archieval · 02-12-2008, 06:43 PM

Hi everyone,

I have read about tty core in the last chapter of Linux device drivers 3rd edition. When I browsed my linux source tree, I have noticed drivers/serial/serial_core.c. This file is being used by the other files (i.e. uart00.c) on the same folder. I am wondering if this is the tty core that the book has mentioned. Although all the functions used which were preceeded by tty (i.e. tty_register_driver) were replaced by uart (i.e. uart_register_driver). If this is the tty core, is the naming convention in the file serial_core.c has changed?

Also if I am going to develop a serial driver, am I going to register it with the serial_core.c?

My distro is montavista linux pro 4.01, kernel version 2.6.10.

Thank you!

elluva · 02-14-2008, 05:42 AM

I searched the sources of the 2.6.10 kernel and found these results:

Code:

[~/tmp/kernel] $ find . -exec grep -l tty_register_driver {} \;
./linux-2.6.10/arch/ppc/4xx_io/serial_sicc.c
./linux-2.6.10/arch/ia64/hp/sim/simserial.c
./linux-2.6.10/arch/alpha/kernel/srmcons.c
./linux-2.6.10/arch/um/drivers/line.c
./linux-2.6.10/arch/v850/kernel/simcons.c
./linux-2.6.10/arch/v850/kernel/memcons.c
./linux-2.6.10/fs/proc/proc_tty.c
./linux-2.6.10/include/linux/tty.h
./linux-2.6.10/include/linux/tty_driver.h
./linux-2.6.10/include/linux/proc_fs.h
./linux-2.6.10/drivers/net/wan/pc300_tty.c
./linux-2.6.10/drivers/net/wan/sdla_chdlc.c
./linux-2.6.10/drivers/s390/char/tty3270.c
./linux-2.6.10/drivers/s390/char/sclp_vt220.c
./linux-2.6.10/drivers/s390/char/con3215.c
./linux-2.6.10/drivers/s390/char/sclp_tty.c
./linux-2.6.10/drivers/s390/net/ctctty.c
./linux-2.6.10/drivers/char/rio/rio_linux.c
./linux-2.6.10/drivers/char/viocons.c
./linux-2.6.10/drivers/char/esp.c
./linux-2.6.10/drivers/char/vme_scc.c
./linux-2.6.10/drivers/char/isicom.c
./linux-2.6.10/drivers/char/synclinkmp.c
./linux-2.6.10/drivers/char/cyclades.c
./linux-2.6.10/drivers/char/ser_a2232.c
./linux-2.6.10/drivers/char/pty.c
./linux-2.6.10/drivers/char/pcmcia/synclink_cs.c
./linux-2.6.10/drivers/char/synclink.c
./linux-2.6.10/drivers/char/sx.c
./linux-2.6.10/drivers/char/serial167.c
./linux-2.6.10/drivers/char/riscom8.c
./linux-2.6.10/drivers/char/serial_tx3912.c
./linux-2.6.10/drivers/char/ChangeLog
./linux-2.6.10/drivers/char/epca.c
./linux-2.6.10/drivers/char/tty_io.c
./linux-2.6.10/drivers/char/pcxx.c
./linux-2.6.10/drivers/char/istallion.c
./linux-2.6.10/drivers/char/hvsi.c
./linux-2.6.10/drivers/char/mxser.c
./linux-2.6.10/drivers/char/rocket.c
./linux-2.6.10/drivers/char/stallion.c
./linux-2.6.10/drivers/char/vt.c
./linux-2.6.10/drivers/char/hvc_console.c
./linux-2.6.10/drivers/char/specialix.c
./linux-2.6.10/drivers/char/moxa.c
./linux-2.6.10/drivers/char/amiserial.c
./linux-2.6.10/drivers/char/ip2main.c
./linux-2.6.10/drivers/char/hvcs.c
./linux-2.6.10/drivers/serial/serial_core.c
./linux-2.6.10/drivers/serial/mcfserial.c
./linux-2.6.10/drivers/serial/crisv10.c
./linux-2.6.10/drivers/serial/68360serial.c
./linux-2.6.10/drivers/serial/68328serial.c
./linux-2.6.10/drivers/usb/gadget/serial.c
./linux-2.6.10/drivers/usb/serial/usb-serial.c
./linux-2.6.10/drivers/usb/class/cdc-acm.c
./linux-2.6.10/drivers/usb/class/bluetty.c
./linux-2.6.10/drivers/isdn/i4l/isdn_tty.c
./linux-2.6.10/drivers/isdn/capi/capi.c
./linux-2.6.10/drivers/macintosh/macserial.c
./linux-2.6.10/drivers/sbus/char/aurora.c
./linux-2.6.10/drivers/tc/zs.c
./linux-2.6.10/net/bluetooth/rfcomm/tty.c
./linux-2.6.10/net/irda/ircomm/ircomm_tty.c

I hope this helps to narrow it down a little.

greetings,
Elluva

archieval · 02-14-2008, 08:09 PM

hmm.. so it means, the one that has the tty_register_driver declaration, is the tty core? Ok I'll check on these files. Anyhow, what would be the use of the serial_core.c? Someone told me, I have to register my tty driver with that file.

elluva · 02-16-2008, 09:22 AM

I don't know any details about this, but this site seems interesting...

archieval · 02-17-2008, 03:53 AM

OK I have checked on it. Hmm.. yeah its useful, are those structures still exist on the 2.6 kernel?