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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-23 04:59:04 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-23 04:59:04 +0200 |
| commit | 73ecf3a6e3f0206bf56a0fefe3b3eda042fb7034 (patch) | |
| tree | 866f0ebb2b148479e93b5ac955097b1cc94ceb4e | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 (diff) | |
| parent | serial8250: ratelimit "too much work" error (diff) | |
| download | linux-73ecf3a6e3f0206bf56a0fefe3b3eda042fb7034.tar.xz linux-73ecf3a6e3f0206bf56a0fefe3b3eda042fb7034.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (49 commits)
serial8250: ratelimit "too much work" error
serial: bfin_sport_uart: speed up sport RX sample rate to be 3% faster
serial: abstraction for 8250 legacy ports
serial/imx: check that the buffer is non-empty before sending it out
serial: mfd: add more baud rates support
jsm: Remove the uart port on errors
Alchemy: Add UART PM methods.
8250: allow platforms to override PM hook.
altera_uart: Don't use plain integer as NULL pointer
altera_uart: Fix missing prototype for registering an early console
altera_uart: Fixup type usage of port flags
altera_uart: Make it possible to use Altera UART and 8250 ports together
altera_uart: Add support for different address strides
altera_uart: Add support for getting mapbase and IRQ from resources
altera_uart: Add support for polling mode (IRQ-less)
serial: Factor out uart_poll_timeout() from 8250 driver
serial: mark the 8250 driver as maintained
serial: 8250: Don't delay after transmitter is ready.
tty: MAINTAINERS: add drivers/serial/jsm/ as maintained driver
vcs: invoke the vt update callback when /dev/vcs* is written to
...
66 files changed, 1757 insertions, 1533 deletions
diff --git a/Documentation/devices.txt b/Documentation/devices.txt index d0d1df6cb5de..6a08fd731d28 100644 --- a/Documentation/devices.txt +++ b/Documentation/devices.txt @@ -239,6 +239,7 @@ Your cooperation is appreciated. 0 = /dev/tty Current TTY device 1 = /dev/console System console 2 = /dev/ptmx PTY master multiplex + 3 = /dev/ttyprintk User messages via printk TTY device 64 = /dev/cua0 Callout device for ttyS0 ... 255 = /dev/cua191 Callout device for ttyS191 diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index a6aca8740883..98223a676940 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -1075,6 +1075,7 @@ Table 1-11: Files in /proc/tty drivers list of drivers and their usage ldiscs registered line disciplines driver/serial usage statistic and status of single tty lines + consoles registered system console lines .............................................................................. To see which tty's are currently in use, you can simply look into the file @@ -1093,6 +1094,37 @@ To see which tty's are currently in use, you can simply look into the file /dev/tty /dev/tty 5 0 system:/dev/tty unknown /dev/tty 4 1-63 console +To see which character device lines are currently used for the system console +/dev/console, you may simply look into the file /proc/tty/consoles: + + > cat /proc/tty/consoles + tty0 -WU (ECp) 4:7 + ttyS0 -W- (Ep) 4:64 + +The columns are: + + device name of the device + operations R = can do read operations + W = can do write operations + U = can do unblank + flags E = it is enabled + C = it is prefered console + B = it is primary boot console + p = it is used for printk buffer + b = it is not a TTY but a Braille device + a = it is safe to use when cpu is offline + * = it is standard input of the reading process + major:minor major and minor number of the device separated by a colon + +If the reading process holds /dev/console open at the regular standard input +stream the active device will be marked by an asterisk: + + > cat /proc/tty/consoles < /dev/console + tty0 -WU (ECp*) 4:7 + ttyS0 -W- (Ep) 4:64 + > tty + /dev/pts/3 + 1.8 Miscellaneous kernel statistics in /proc/stat ------------------------------------------------- diff --git a/MAINTAINERS b/MAINTAINERS index fd19b544a1b1..060e32ab35fb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -157,9 +157,11 @@ S: Maintained F: drivers/net/r8169.c 8250/16?50 (AND CLONE UARTS) SERIAL DRIVER +M: Greg Kroah-Hartman <gregkh@suse.de> L: linux-serial@vger.kernel.org W: http://serial.sourceforge.net -S: Orphan +S: Maintained +T: quilt kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/ F: drivers/serial/8250* F: include/linux/serial_8250.h @@ -3353,6 +3355,12 @@ F: fs/jbd*/ F: include/linux/ext*jbd*.h F: include/linux/jbd*.h +JSM Neo PCI based serial card +M: Breno Leitao <leitao@linux.vnet.ibm.com> +L: linux-serial@vger.kernel.org +S: Maintained +F: drivers/serial/jsm/ + K8TEMP HARDWARE MONITORING DRIVER M: Rudolf Marek <r.marek@assembler.cz> L: lm-sensors@lm-sensors.org diff --git a/arch/arm/include/asm/ioctls.h b/arch/arm/include/asm/ioctls.h index 0b30894b5482..9c9629816128 100644 --- a/arch/arm/include/asm/ioctls.h +++ b/arch/arm/include/asm/ioctls.h @@ -1,89 +1,8 @@ #ifndef __ASM_ARM_IOCTLS_H #define __ASM_ARM_IOCTLS_H -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define TIOCGRS485 0x542E -#define TIOCSRS485 0x542F - -#define FIONCLEX 0x5450 /* these numbers need to be adjusted. */ -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ #define FIOQSIZE 0x545E -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif diff --git a/arch/avr32/include/asm/ioctls.h b/arch/avr32/include/asm/ioctls.h index b7dd324b46a9..909cf66feaf5 100644 --- a/arch/avr32/include/asm/ioctls.h +++ b/arch/avr32/include/asm/ioctls.h @@ -1,90 +1,6 @@ #ifndef __ASM_AVR32_IOCTLS_H #define __ASM_AVR32_IOCTLS_H -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 /* Clashes with SNDCTL_TMR_START sound ioctl */ -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -/* #define TIOCTTYGSTRUCT 0x5426 - Former debugging-only ioctl */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define TIOCGRS485 0x542E -#define TIOCSRS485 0x542F - -#define FIONCLEX 0x5450 -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ -#define FIOQSIZE 0x5460 - -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif /* __ASM_AVR32_IOCTLS_H */ diff --git a/arch/cris/include/asm/ioctls.h b/arch/cris/include/asm/ioctls.h index c9129ed37443..488fbb3f5e84 100644 --- a/arch/cris/include/asm/ioctls.h +++ b/arch/cris/include/asm/ioctls.h @@ -1,93 +1,11 @@ #ifndef __ARCH_CRIS_IOCTLS_H__ #define __ARCH_CRIS_IOCTLS_H__ -/* verbatim copy of asm-i386/ioctls.h */ - -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define FIONCLEX 0x5450 /* these numbers need to be adjusted. */ -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 #define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ -#define FIOQSIZE 0x5460 - #define TIOCSERSETRS485 0x5461 /* enable rs-485 (deprecated) */ #define TIOCSERWRRS485 0x5462 /* write rs-485 */ #define TIOCSRS485 0x5463 /* enable rs-485 */ -#define TIOCGRS485 0x542E /* get rs-485 */ - -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif diff --git a/arch/frv/include/asm/ioctls.h b/arch/frv/include/asm/ioctls.h index a993e3759ccf..2f9fb436ec3c 100644 --- a/arch/frv/include/asm/ioctls.h +++ b/arch/frv/include/asm/ioctls.h @@ -1,88 +1,10 @@ #ifndef __ASM_IOCTLS_H__ #define __ASM_IOCTLS_H__ -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ #define TIOCTTYGSTRUCT 0x5426 /* For debugging only */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define FIONCLEX 0x5450 /* these numbers need to be adjusted. */ -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ #define FIOQSIZE 0x545E -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif /* __ASM_IOCTLS_H__ */ diff --git a/arch/h8300/include/asm/ioctls.h b/arch/h8300/include/asm/ioctls.h index b6b249f9f308..30eaed2facdb 100644 --- a/arch/h8300/include/asm/ioctls.h +++ b/arch/h8300/include/asm/ioctls.h @@ -1,87 +1,8 @@ #ifndef __ARCH_H8300_IOCTLS_H__ #define __ARCH_H8300_IOCTLS_H__ -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -#define TIOCTTYGSTRUCT 0x5426 /* For debugging only */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define FIONCLEX 0x5450 /* these numbers need to be adjusted. */ -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ #define FIOQSIZE 0x545E -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif /* __ARCH_H8300_IOCTLS_H__ */ diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c index 1e8d71ad93ef..13633da0d3de 100644 --- a/arch/ia64/hp/sim/simserial.c +++ b/arch/ia64/hp/sim/simserial.c @@ -395,7 +395,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, { if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) && - (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + (cmd != TIOCMIWAIT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } @@ -433,16 +433,6 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, case TIOCMIWAIT: printk(KERN_INFO "rs_ioctl: TIOCMIWAIT: called\n"); return 0; - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: - printk(KERN_INFO "rs_ioctl: TIOCGICOUNT called\n"); - return 0; - case TIOCSERGWILD: case TIOCSERSWILD: /* "setserial -W" is called in Debian boot */ diff --git a/arch/ia64/include/asm/ioctls.h b/arch/ia64/include/asm/ioctls.h index b79c385114ef..f3aab5512e98 100644 --- a/arch/ia64/include/asm/ioctls.h +++ b/arch/ia64/include/asm/ioctls.h @@ -1,93 +1,6 @@ #ifndef _ASM_IA64_IOCTLS_H #define _ASM_IA64_IOCTLS_H -/* - * Based on <asm-i386/ioctls.h> - * - * Modified 1998, 1999, 2002 - * David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co - */ - -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 /* Clashes with SNDCTL_TMR_START sound ioctl */ -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define FIONCLEX 0x5450 /* these numbers need to be adjusted. */ -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ -#define FIOQSIZE 0x5460 - -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif /* _ASM_IA64_IOCTLS_H */ diff --git a/arch/m32r/include/asm/ioctls.h b/arch/m32r/include/asm/ioctls.h index 66288063a4c0..349bf87bfbd0 100644 --- a/arch/m32r/include/asm/ioctls.h +++ b/arch/m32r/include/asm/ioctls.h @@ -1,87 +1,6 @@ #ifndef __ARCH_M32R_IOCTLS_H__ #define __ARCH_M32R_IOCTLS_H__ -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 /* Clashes with SNDCTL_TMR_START sound ioctl */ -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -/* #define TIOCTTYGSTRUCT 0x5426 - Former debugging-only ioctl */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define FIONCLEX 0x5450 -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ -#define FIOQSIZE 0x5460 - -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif /* __ARCH_M32R_IOCTLS_H__ */ diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c index 1dc55ee2681b..3691630931d6 100644 --- a/arch/mips/alchemy/common/platform.c +++ b/arch/mips/alchemy/common/platform.c @@ -24,6 +24,33 @@ #include <prom.h> +static void alchemy_8250_pm(struct uart_port *port, unsigned int state, + unsigned int old_state) +{ + switch (state) { + case 0: + if ((__raw_readl(port->membase + UART_MOD_CNTRL) & 3) != 3) { + /* power-on sequence as suggested in the databooks */ + __raw_writel(0, port->membase + UART_MOD_CNTRL); + wmb(); + __raw_writel(1, port->membase + UART_MOD_CNTRL); + wmb(); + } + __raw_writel(3, port->membase + UART_MOD_CNTRL); /* full on */ + wmb(); + serial8250_do_pm(port, state, old_state); + break; + case 3: /* power off */ + serial8250_do_pm(port, state, old_state); + __raw_writel(0, port->membase + UART_MOD_CNTRL); + wmb(); + break; + default: + serial8250_do_pm(port, state, old_state); + break; + } +} + #define PORT(_base, _irq) \ { \ .mapbase = _base, \ @@ -33,6 +60,7 @@ .flags = UPF_SKIP_TEST | UPF_IOREMAP | \ UPF_FIXED_TYPE, \ .type = PORT_16550A, \ + .pm = alchemy_8250_pm, \ } static struct plat_serial8250_port au1x00_uart_data[] = { diff --git a/arch/mips/alchemy/common/power.c b/arch/mips/alchemy/common/power.c index 5ef06a164a82..e5916a516e58 100644 --- a/arch/mips/alchemy/common/power.c +++ b/arch/mips/alchemy/common/power.c @@ -49,11 +49,6 @@ * We only have to save/restore registers that aren't otherwise * done as part of a driver pm_* function. */ -static unsigned int sleep_uart0_inten; -static unsigned int sleep_uart0_fifoctl; -static unsigned int sleep_uart0_linectl; -static unsigned int sleep_uart0_clkdiv; -static unsigned int sleep_uart0_enable; static unsigned int sleep_usb[2]; static unsigned int sleep_sys_clocks[5]; static unsigned int sleep_sys_pinfunc; @@ -62,22 +57,6 @@ static unsigned int sleep_static_memctlr[4][3]; static void save_core_regs(void) { - extern void save_au1xxx_intctl(void); - extern void pm_eth0_shutdown(void); - - /* - * Do the serial ports.....these really should be a pm_* - * registered function by the driver......but of course the - * standard serial driver doesn't understand our Au1xxx - * unique registers. - */ - sleep_uart0_inten = au_readl(UART0_ADDR + UART_IER); - sleep_uart0_fifoctl = au_readl(UART0_ADDR + UART_FCR); - sleep_uart0_linectl = au_readl(UART0_ADDR + UART_LCR); - sleep_uart0_clkdiv = au_readl(UART0_ADDR + UART_CLK); - sleep_uart0_enable = au_readl(UART0_ADDR + UART_MOD_CNTRL); - au_sync(); - #ifndef CONFIG_SOC_AU1200 /* Shutdown USB host/device. */ sleep_usb[0] = au_readl(USB_HOST_CONFIG); @@ -175,20 +154,6 @@ static void restore_core_regs(void) au_writel(sleep_static_memctlr[3][0], MEM_STCFG3); au_writel(sleep_static_memctlr[3][1], MEM_STTIME3); au_writel(sleep_static_memctlr[3][2], MEM_STADDR3); - - /* - * Enable the UART if it was enabled before sleep. - * I guess I should define module control bits........ - */ - if (sleep_uart0_enable & 0x02) { - au_writel(0, UART0_ADDR + UART_MOD_CNTRL); au_sync(); - au_writel(1, UART0_ADDR + UART_MOD_CNTRL); au_sync(); - au_writel(3, UART0_ADDR + UART_MOD_CNTRL); au_sync(); - au_writel(sleep_uart0_inten, UART0_ADDR + UART_IER); au_sync(); - au_writel(sleep_uart0_fifoctl, UART0_ADDR + UART_FCR); au_sync(); - au_writel(sleep_uart0_linectl, UART0_ADDR + UART_LCR); au_sync(); - au_writel(sleep_uart0_clkdiv, UART0_ADDR + UART_CLK); au_sync(); - } } void au_sleep(void) diff --git a/arch/mn10300/include/asm/ioctls.h b/arch/mn10300/include/asm/ioctls.h index cb8cf1902234..0212f4b22557 100644 --- a/arch/mn10300/include/asm/ioctls.h +++ b/arch/mn10300/include/asm/ioctls.h @@ -1,88 +1,6 @@ #ifndef _ASM_IOCTLS_H #define _ASM_IOCTLS_H -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -/* #define TIOCTTYGSTRUCT 0x5426 - Former debugging-only ioctl */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T', 0x2A, struct termios2) -#define TCSETS2 _IOW('T', 0x2B, struct termios2) -#define TCSETSW2 _IOW('T', 0x2C, struct termios2) -#define TCSETSF2 _IOW('T', 0x2D, struct termios2) -#define TIOCGPTN _IOR('T', 0x30, unsigned int) /* Get Pty Number - * (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T', 0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T', 0x36, int) /* Generate signal on Pty slave */ - -#define FIONCLEX 0x5450 -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ -#define FIOQSIZE 0x5460 - -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif /* _ASM_IOCTLS_H */ diff --git a/arch/s390/include/asm/ioctls.h b/arch/s390/include/asm/ioctls.h index 2f3d8736361f..960a4c1ebdf1 100644 --- a/arch/s390/include/asm/ioctls.h +++ b/arch/s390/include/asm/ioctls.h @@ -1,94 +1,8 @@ -/* - * include/asm-s390/ioctls.h - * - * S390 version - * - * Derived from "include/asm-i386/ioctls.h" - */ - #ifndef __ARCH_S390_IOCTLS_H__ #define __ARCH_S390_IOCTLS_H__ -#include <asm/ioctl.h> - -/* 0x54 is just a magic number to make these relatively unique ('T') */ - -#define TCGETS 0x5401 -#define TCSETS 0x5402 -#define TCSETSW 0x5403 -#define TCSETSF 0x5404 -#define TCGETA 0x5405 -#define TCSETA 0x5406 -#define TCSETAW 0x5407 -#define TCSETAF 0x5408 -#define TCSBRK 0x5409 -#define TCXONC 0x540A -#define TCFLSH 0x540B -#define TIOCEXCL 0x540C -#define TIOCNXCL 0x540D -#define TIOCSCTTY 0x540E -#define TIOCGPGRP 0x540F -#define TIOCSPGRP 0x5410 -#define TIOCOUTQ 0x5411 -#define TIOCSTI 0x5412 -#define TIOCGWINSZ 0x5413 -#define TIOCSWINSZ 0x5414 -#define TIOCMGET 0x5415 -#define TIOCMBIS 0x5416 -#define TIOCMBIC 0x5417 -#define TIOCMSET 0x5418 -#define TIOCGSOFTCAR 0x5419 -#define TIOCSSOFTCAR 0x541A -#define FIONREAD 0x541B -#define TIOCINQ FIONREAD -#define TIOCLINUX 0x541C -#define TIOCCONS 0x541D -#define TIOCGSERIAL 0x541E -#define TIOCSSERIAL 0x541F -#define TIOCPKT 0x5420 -#define FIONBIO 0x5421 -#define TIOCNOTTY 0x5422 -#define TIOCSETD 0x5423 -#define TIOCGETD 0x5424 -#define TCSBRKP 0x5425 /* Needed for POSIX tcsendbreak() */ -#define TIOCSBRK 0x5427 /* BSD compatibility */ -#define TIOCCBRK 0x5428 /* BSD compatibility */ -#define TIOCGSID 0x5429 /* Return the session ID of FD */ -#define TCGETS2 _IOR('T',0x2A, struct termios2) -#define TCSETS2 _IOW('T',0x2B, struct termios2) -#define TCSETSW2 _IOW('T',0x2C, struct termios2) -#define TCSETSF2 _IOW('T',0x2D, struct termios2) -#define TIOCGPTN _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ -#define TIOCSPTLCK _IOW('T',0x31, int) /* Lock/unlock Pty */ -#define TIOCSIG _IOW('T',0x36, int) /* Generate signal on Pty slave */ - -#define FIONCLEX 0x5450 /* these numbers need to be adjusted. */ -#define FIOCLEX 0x5451 -#define FIOASYNC 0x5452 -#define TIOCSERCONFIG 0x5453 -#define TIOCSERGWILD 0x5454 -#define TIOCSERSWILD 0x5455 -#define TIOCGLCKTRMIOS 0x5456 -#define TIOCSLCKTRMIOS 0x5457 -#define TIOCSERGSTRUCT 0x5458 /* For debugging only */ -#define TIOCSERGETLSR 0x5459 /* Get line status register */ -#define TIOCSERGETMULTI 0x545A /* Get multiport config */ -#define TIOCSERSETMULTI 0x545B /* Set multiport config */ - -#define TIOCMIWAIT 0x545C /* wait for a change on serial input line(s) */ -#define TIOCGICOUNT 0x545D /* read serial port inline interrupt counts */ #define FIOQSIZE 0x545E -/* Used for packet mode */ -#define TIOCPKT_DATA 0 -#define TIOCPKT_FLUSHREAD 1 -#define TIOCPKT_FLUSHWRITE 2 -#define TIOCPKT_STOP 4 -#define TIOCPKT_START 8 -#define TIOCPKT_NOSTOP 16 -#define TIOCPKT_DOSTOP 32 -#define TIOCPKT_IOCTL 64 - -#define TIOCSER_TEMT 0x01 /* Transmitter physically empty */ +#include <asm-generic/ioctls.h> #endif diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 3d44ec724c17..43d3395325c5 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -493,6 +493,21 @@ config LEGACY_PTY_COUNT When not in use, each legacy PTY occupies 12 bytes on 32-bit architectures and 24 bytes on 64-bit architectures. +config TTY_PRINTK + bool "TTY driver to output user messages via printk" + depends on EMBEDDED + default n + ---help--- + If you say Y here, the support for writing user messages (i.e. + console messages) via printk is available. + + The feature is useful to inline user messages with kernel + messages. + In order to use this feature, you should output user messages + to /dev/ttyprintk or redirect console to this TTY. + + If unsure, say N. + config BRIQ_PANEL tristate 'Total Impact briQ front panel driver' depends on PPC_CHRP diff --git a/drivers/char/Makefile b/drivers/char/Makefile index dc9641660605..3a9c01416839 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -12,6 +12,7 @@ obj-y += mem.o random.o tty_io.o n_tty.o tty_ioctl.o tty_ldisc.o tty_buffer.o t obj-y += tty_mutex.o obj-$(CONFIG_LEGACY_PTYS) += pty.o obj-$(CONFIG_UNIX98_PTYS) += pty.o +obj-$(CONFIG_TTY_PRINTK) += ttyprintk.o obj-y += misc.o obj-$(CONFIG_VT) += vt_ioctl.o vc_screen.o selection.o keyboard.o obj-$(CONFIG_BFIN_JTAG_COMM) += bfin_jtag_comm.o diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index a11c8c9ca3d4..b0a70461a12c 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -1263,6 +1263,36 @@ static int rs_break(struct tty_struct *tty, int break_state) return 0; } +/* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ +static int rs_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct async_struct *info = tty->driver_data; + struct async_icount cnow; + unsigned long flags; + + local_irq_save(flags); + cnow = info->state->icount; + local_irq_restore(flags); + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} static int rs_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) @@ -1332,31 +1362,6 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, } /* NOTREACHED */ - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: - local_irq_save(flags); - cnow = info->state->icount; - local_irq_restore(flags); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - - if (copy_to_user(argp, &icount, sizeof(icount))) - return -EFAULT; - return 0; case TIOCSERGWILD: case TIOCSERSWILD: /* "setserial -W" is called in Debian boot */ @@ -1958,6 +1963,7 @@ static const struct tty_operations serial_ops = { .wait_until_sent = rs_wait_until_sent, .tiocmget = rs_tiocmget, .tiocmset = rs_tiocmset, + .get_icount = rs_get_icount, .proc_fops = &rs_proc_fops, }; diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 27aad9422332..4f152c28f40e 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -2790,29 +2790,6 @@ cy_ioctl(struct tty_struct *tty, struct file *file, * NB: both 1->0 and 0->1 transitions are counted except for * RI where only 0->1 is counted. */ - case TIOCGICOUNT: { - struct serial_icounter_struct sic = { }; - - spin_lock_irqsave(&info->card->card_lock, flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->card->card_lock, flags); - - sic.cts = cnow.cts; - sic.dsr = cnow.dsr; - sic.rng = cnow.rng; - sic.dcd = cnow.dcd; - sic.rx = cnow.rx; - sic.tx = cnow.tx; - sic.frame = cnow.frame; - sic.overrun = cnow.overrun; - sic.parity = cnow.parity; - sic.brk = cnow.brk; - sic.buf_overrun = cnow.buf_overrun; - - if (copy_to_user(argp, &sic, sizeof(sic))) - ret_val = -EFAULT; - break; - } default: ret_val = -ENOIOCTLCMD; } @@ -2823,6 +2800,31 @@ cy_ioctl(struct tty_struct *tty, struct file *file, return ret_val; } /* cy_ioctl */ +static int cy_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *sic) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_icount cnow; /* Used to snapshot */ + unsigned long flags; + + spin_lock_irqsave(&info->card->card_lock, flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->card->card_lock, flags); + + sic->cts = cnow.cts; + sic->dsr = cnow.dsr; + sic->rng = cnow.rng; + sic->dcd = cnow.dcd; + sic->rx = cnow.rx; + sic->tx = cnow.tx; + sic->frame = cnow.frame; + sic->overrun = cnow.overrun; + sic->parity = cnow.parity; + sic->brk = cnow.brk; + sic->buf_overrun = cnow.buf_overrun; + return 0; +} + /* * This routine allows the tty driver to be notified when * device's termios settings have changed. Note that a @@ -4084,6 +4086,7 @@ static const struct tty_operations cy_ops = { .wait_until_sent = cy_wait_until_sent, .tiocmget = cy_tiocmget, .tiocmset = cy_tiocmset, + .get_icount = cy_get_icount, .proc_fops = &cyclades_proc_fops, }; diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c index 64a439ce2f89..fcd02baa7d65 100644 --- a/drivers/char/ip2/ip2main.c +++ b/drivers/char/ip2/ip2main.c @@ -184,6 +184,8 @@ static void ip2_hangup(PTTY); static int ip2_tiocmget(struct tty_struct *tty, struct file *file); static int ip2_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); +static int ip2_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount); static void set_irq(int, int); static void ip2_interrupt_bh(struct work_struct *work); @@ -456,6 +458,7 @@ static const struct tty_operations ip2_ops = { .hangup = ip2_hangup, .tiocmget = ip2_tiocmget, .tiocmset = ip2_tiocmset, + .get_icount = ip2_get_icount, .proc_fops = &ip2_proc_fops, }; @@ -2130,7 +2133,6 @@ ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) i2ChanStrPtr pCh = DevTable[tty->index]; i2eBordStrPtr pB; struct async_icount cprev, cnow; /* kernel counter temps */ - struct serial_icounter_struct __user *p_cuser; int rc = 0; unsigned long flags; void __user *argp = (void __user *)arg; @@ -2299,34 +2301,6 @@ ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) break; /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for RI where - * only 0->1 is counted. The controller is quite capable of counting - * both, but this done to preserve compatibility with the standard - * serial driver. - */ - case TIOCGICOUNT: - ip2trace (CHANN, ITRC_IOCTL, 11, 1, rc ); - - write_lock_irqsave(&pB->read_fifo_spinlock, flags); - cnow = pCh->icount; - write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); - p_cuser = argp; - rc = put_user(cnow.cts, &p_cuser->cts); - rc = put_user(cnow.dsr, &p_cuser->dsr); - rc = put_user(cnow.rng, &p_cuser->rng); - rc = put_user(cnow.dcd, &p_cuser->dcd); - rc = put_user(cnow.rx, &p_cuser->rx); - rc = put_user(cnow.tx, &p_cuser->tx); - rc = put_user(cnow.frame, &p_cuser->frame); - rc = put_user(cnow.overrun, &p_cuser->overrun); - rc = put_user(cnow.parity, &p_cuser->parity); - rc = put_user(cnow.brk, &p_cuser->brk); - rc = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); - break; - - /* * The rest are not supported by this driver. By returning -ENOIOCTLCMD they * will be passed to the line discipline for it to handle. */ @@ -2350,6 +2324,46 @@ ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) return rc; } +static int ip2_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + i2ChanStrPtr pCh = DevTable[tty->index]; + i2eBordStrPtr pB; + struct async_icount cnow; /* kernel counter temp */ + unsigned long flags; + + if ( pCh == NULL ) + return -ENODEV; + + pB = pCh->pMyBord; + + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for RI where + * only 0->1 is counted. The controller is quite capable of counting + * both, but this done to preserve compatibility with the standard + * serial driver. + */ + + write_lock_irqsave(&pB->read_fifo_spinlock, flags); + cnow = pCh->icount; + write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + return 0; +} + /******************************************************************************/ /* Function: GetSerialInfo() */ /* Parameters: Pointer to channel structure */ diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index 3fc89da856ae..463df27494bd 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -1700,7 +1700,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, return 0; } - if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT && + if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && test_bit(TTY_IO_ERROR, &tty->flags)) return -EIO; @@ -1730,32 +1730,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, return wait_event_interruptible(info->port.delta_msr_wait, mxser_cflags_changed(info, arg, &cnow)); - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: { - struct serial_icounter_struct icnt = { 0 }; - spin_lock_irqsave(&info->slock, flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->slock, flags); - - icnt.frame = cnow.frame; - icnt.brk = cnow.brk; - icnt.overrun = cnow.overrun; - icnt.buf_overrun = cnow.buf_overrun; - icnt.parity = cnow.parity; - icnt.rx = cnow.rx; - icnt.tx = cnow.tx; - icnt.cts = cnow.cts; - icnt.dsr = cnow.dsr; - icnt.rng = cnow.rng; - icnt.dcd = cnow.dcd; - - return copy_to_user(argp, &icnt, sizeof(icnt)) ? -EFAULT : 0; - } case MOXA_HighSpeedOn: return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); case MOXA_SDS_RSTICOUNTER: @@ -1828,6 +1802,39 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, return 0; } + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ + +static int mxser_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) + +{ + struct mxser_port *info = tty->driver_data; + struct async_icount cnow; + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->slock, flags); + + icount->frame = cnow.frame; + icount->brk = cnow.brk; + icount->overrun = cnow.overrun; + icount->buf_overrun = cnow.buf_overrun; + icount->parity = cnow.parity; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + return 0; +} + static void mxser_stoprx(struct tty_struct *tty) { struct mxser_port *info = tty->driver_data; @@ -2326,6 +2333,7 @@ static const struct tty_operations mxser_ops = { .wait_until_sent = mxser_wait_until_sent, .tiocmget = mxser_tiocmget, .tiocmset = mxser_tiocmset, + .get_icount = mxser_get_icount, }; struct tty_port_operations mxser_port_ops = { @@ -2339,20 +2347,11 @@ struct tty_port_operations mxser_port_ops = { * The MOXA Smartio/Industio serial driver boot-time initialization code! */ -static void mxser_release_res(struct mxser_board *brd, struct pci_dev *pdev, - unsigned int irq) +static void mxser_release_ISA_res(struct mxser_board *brd) { - if (irq) - free_irq(brd->irq, brd); - if (pdev != NULL) { /* PCI */ -#ifdef CONFIG_PCI - pci_release_region(pdev, 2); - pci_release_region(pdev, 3); -#endif - } else { - release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); - release_region(brd->vector, 1); - } + free_irq(brd->irq, brd); + release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); + release_region(brd->vector, 1); } static int __devinit mxser_initbrd(struct mxser_board *brd, @@ -2397,13 +2396,11 @@ static int __devinit mxser_initbrd(struct mxser_board *brd, retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser", brd); - if (retval) { + if (retval) printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " "conflict with another device.\n", brd->info->name, brd->irq); - /* We hold resources, we need to release them. */ - mxser_release_res(brd, pdev, 0); - } + return retval; } @@ -2555,7 +2552,7 @@ static int __devinit mxser_probe(struct pci_dev *pdev, ioaddress = pci_resource_start(pdev, 2); retval = pci_request_region(pdev, 2, "mxser(IO)"); if (retval) - goto err; + goto err_dis; brd->info = &mxser_cards[ent->driver_data]; for (i = 0; i < brd->info->nports; i++) @@ -2565,7 +2562,7 @@ static int __devinit mxser_probe(struct pci_dev *pdev, ioaddress = pci_resource_start(pdev, 3); retval = pci_request_region(pdev, 3, "mxser(vector)"); if (retval) - goto err_relio; + goto err_zero; brd->vector = ioaddress; /* irq */ @@ -2608,7 +2605,7 @@ static int __devinit mxser_probe(struct pci_dev *pdev, /* mxser_initbrd will hook ISR. */ retval = mxser_initbrd(brd, pdev); if (retval) - goto err_null; + goto err_rel3; for (i = 0; i < brd->info->nports; i++) tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev); @@ -2616,10 +2613,13 @@ static int __devinit mxser_probe(struct pci_dev *pdev, pci_set_drvdata(pdev, brd); return 0; -err_relio: - pci_release_region(pdev, 2); -err_null: +err_rel3: + pci_release_region(pdev, 3); +err_zero: brd->info = NULL; + pci_release_region(pdev, 2); +err_dis: + pci_disable_device(pdev); err: return retval; #else @@ -2629,14 +2629,19 @@ err: static void __devexit mxser_remove(struct pci_dev *pdev) { +#ifdef CONFIG_PCI struct mxser_board *brd = pci_get_drvdata(pdev); unsigned int i; for (i = 0; i < brd->info->nports; i++) tty_unregister_device(mxvar_sdriver, brd->idx + i); - mxser_release_res(brd, pdev, 1); + free_irq(pdev->irq, brd); + pci_release_region(pdev, 2); + pci_release_region(pdev, 3); + pci_disable_device(pdev); brd->info = NULL; +#endif } static struct pci_driver mxser_driver = { @@ -2741,7 +2746,7 @@ static void __exit mxser_module_exit(void) for (i = 0; i < MXSER_BOARDS; i++) if (mxser_boards[i].info != NULL) - mxser_release_res(&mxser_boards[i], NULL, 1); + mxser_release_ISA_res(&mxser_boards[i]); } module_init(mxser_module_init); diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index 817169cbb245..dd3f9b1f11b4 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -1804,24 +1804,24 @@ static int ntty_cflags_changed(struct port *port, unsigned long flags, return ret; } -static int ntty_ioctl_tiocgicount(struct port *port, void __user *argp) +static int ntty_tiocgicount(struct tty_struct *tty, + struct serial_icounter_struct *icount) { + struct port *port = tty->driver_data; const struct async_icount cnow = port->tty_icount; - struct serial_icounter_struct icount; - - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - - return copy_to_user(argp, &icount, sizeof(icount)) ? -EFAULT : 0; + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + return 0; } static int ntty_ioctl(struct tty_struct *tty, struct file *file, @@ -1840,9 +1840,7 @@ static int ntty_ioctl(struct tty_struct *tty, struct file *file, rval = wait_event_interruptible(port->tty_wait, ntty_cflags_changed(port, arg, &cprev)); break; - } case TIOCGICOUNT: - rval = ntty_ioctl_tiocgicount(port, argp); - break; + } default: DBG1("ERR: 0x%08X, %d", cmd, cmd); break; @@ -1922,6 +1920,7 @@ static const struct tty_operations tty_ops = { .chars_in_buffer = ntty_chars_in_buffer, .tiocmget = ntty_tiocmget, .tiocmset = ntty_tiocmset, + .get_icount = ntty_tiocgicount, .install = ntty_install, .cleanup = ntty_cleanup, }; diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index be1810057607..bfc10f89d951 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -2191,6 +2191,32 @@ static int mgslpc_break(struct tty_struct *tty, int break_state) return 0; } +static int mgslpc_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->lock,flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + /* Service an IOCTL request * * Arguments: @@ -2206,11 +2232,7 @@ static int mgslpc_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) { MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; - int error; - struct mgsl_icount cnow; /* kernel counter temps */ - struct serial_icounter_struct __user *p_cuser; /* user space */ void __user *argp = (void __user *)arg; - unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__, @@ -2220,7 +2242,7 @@ static int mgslpc_ioctl(struct tty_struct *tty, struct file * file, return -ENODEV; if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + (cmd != TIOCMIWAIT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } @@ -2250,34 +2272,6 @@ static int mgslpc_ioctl(struct tty_struct *tty, struct file * file, return wait_events(info, argp); case TIOCMIWAIT: return modem_input_wait(info,(int)arg); - case TIOCGICOUNT: - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->lock,flags); - p_cuser = argp; - PUT_USER(error,cnow.cts, &p_cuser->cts); - if (error) return error; - PUT_USER(error,cnow.dsr, &p_cuser->dsr); - if (error) return error; - PUT_USER(error,cnow.rng, &p_cuser->rng); - if (error) return error; - PUT_USER(error,cnow.dcd, &p_cuser->dcd); - if (error) return error; - PUT_USER(error,cnow.rx, &p_cuser->rx); - if (error) return error; - PUT_USER(error,cnow.tx, &p_cuser->tx); - if (error) return error; - PUT_USER(error,cnow.frame, &p_cuser->frame); - if (error) return error; - PUT_USER(error,cnow.overrun, &p_cuser->overrun); - if (error) return error; - PUT_USER(error,cnow.parity, &p_cuser->parity); - if (error) return error; - PUT_USER(error,cnow.brk, &p_cuser->brk); - if (error) return error; - PUT_USER(error,cnow.buf_overrun, &p_cuser->buf_overrun); - if (error) return error; - return 0; default: return -ENOIOCTLCMD; } diff --git a/drivers/char/pty.c b/drivers/char/pty.c index c350d01716bd..923a48585501 100644 --- a/drivers/char/pty.c +++ b/drivers/char/pty.c @@ -676,7 +676,9 @@ static int ptmx_open(struct inode *inode, struct file *filp) set_bit(TTY_PTY_LOCK, &tty->flags); /* LOCK THE SLAVE */ - tty_add_file(tty, filp); + retval = tty_add_file(tty, filp); + if (retval) + goto out; retval = devpts_pty_new(inode, tty->link); if (retval) diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index a2a58004e188..3a6824f12be2 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -2925,6 +2925,38 @@ static int mgsl_break(struct tty_struct *tty, int break_state) } /* end of mgsl_break() */ +/* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ +static int msgl_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) + +{ + struct mgsl_struct * info = tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + return 0; +} + /* mgsl_ioctl() Service an IOCTL request * * Arguments: @@ -2949,7 +2981,7 @@ static int mgsl_ioctl(struct tty_struct *tty, struct file * file, return -ENODEV; if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + (cmd != TIOCMIWAIT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } @@ -2959,11 +2991,7 @@ static int mgsl_ioctl(struct tty_struct *tty, struct file * file, static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigned long arg) { - int error; - struct mgsl_icount cnow; /* kernel counter temps */ void __user *argp = (void __user *)arg; - struct serial_icounter_struct __user *p_cuser; /* user space */ - unsigned long flags; switch (cmd) { case MGSL_IOCGPARAMS: @@ -2992,40 +3020,6 @@ static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigne case TIOCMIWAIT: return modem_input_wait(info,(int)arg); - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: - spin_lock_irqsave(&info->irq_spinlock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->irq_spinlock,flags); - p_cuser = argp; - PUT_USER(error,cnow.cts, &p_cuser->cts); - if (error) return error; - PUT_USER(error,cnow.dsr, &p_cuser->dsr); - if (error) return error; - PUT_USER(error,cnow.rng, &p_cuser->rng); - if (error) return error; - PUT_USER(error,cnow.dcd, &p_cuser->dcd); - if (error) return error; - PUT_USER(error,cnow.rx, &p_cuser->rx); - if (error) return error; - PUT_USER(error,cnow.tx, &p_cuser->tx); - if (error) return error; - PUT_USER(error,cnow.frame, &p_cuser->frame); - if (error) return error; - PUT_USER(error,cnow.overrun, &p_cuser->overrun); - if (error) return error; - PUT_USER(error,cnow.parity, &p_cuser->parity); - if (error) return error; - PUT_USER(error,cnow.brk, &p_cuser->brk); - if (error) return error; - PUT_USER(error,cnow.buf_overrun, &p_cuser->buf_overrun); - if (error) return error; - return 0; default: return -ENOIOCTLCMD; } @@ -4328,6 +4322,7 @@ static const struct tty_operations mgsl_ops = { .hangup = mgsl_hangup, .tiocmget = tiocmget, .tiocmset = tiocmset, + .get_icount = msgl_get_icount, .proc_fops = &mgsl_proc_fops, }; diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c index e63b830c86cc..1746d91205f7 100644 --- a/drivers/char/synclink_gt.c +++ b/drivers/char/synclink_gt.c @@ -1032,9 +1032,6 @@ static int ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { struct slgt_info *info = tty->driver_data; - struct mgsl_icount cnow; /* kernel counter temps */ - struct serial_icounter_struct __user *p_cuser; /* user space */ - unsigned long flags; void __user *argp = (void __user *)arg; int ret; @@ -1043,7 +1040,7 @@ static int ioctl(struct tty_struct *tty, struct file *file, DBGINFO(("%s ioctl() cmd=%08X\n", info->device_name, cmd)); if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + (cmd != TIOCMIWAIT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } @@ -1053,24 +1050,6 @@ static int ioctl(struct tty_struct *tty, struct file *file, return wait_mgsl_event(info, argp); case TIOCMIWAIT: return modem_input_wait(info,(int)arg); - case TIOCGICOUNT: - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->lock,flags); - p_cuser = argp; - if (put_user(cnow.cts, &p_cuser->cts) || - put_user(cnow.dsr, &p_cuser->dsr) || - put_user(cnow.rng, &p_cuser->rng) || - put_user(cnow.dcd, &p_cuser->dcd) || - put_user(cnow.rx, &p_cuser->rx) || - put_user(cnow.tx, &p_cuser->tx) || - put_user(cnow.frame, &p_cuser->frame) || - put_user(cnow.overrun, &p_cuser->overrun) || - put_user(cnow.parity, &p_cuser->parity) || - put_user(cnow.brk, &p_cuser->brk) || - put_user(cnow.buf_overrun, &p_cuser->buf_overrun)) - return -EFAULT; - return 0; case MGSL_IOCSGPIO: return set_gpio(info, argp); case MGSL_IOCGGPIO: @@ -1117,6 +1096,33 @@ static int ioctl(struct tty_struct *tty, struct file *file, return ret; } +static int get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) + +{ + struct slgt_info *info = tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->lock,flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + /* * support for 32 bit ioctl calls on 64 bit systems */ @@ -1206,10 +1212,6 @@ static long slgt_compat_ioctl(struct tty_struct *tty, struct file *file, case MGSL_IOCSGPIO: case MGSL_IOCGGPIO: case MGSL_IOCWAITGPIO: - case TIOCGICOUNT: - rc = ioctl(tty, file, cmd, (unsigned long)(compat_ptr(arg))); - break; - case MGSL_IOCSTXIDLE: case MGSL_IOCTXENABLE: case MGSL_IOCRXENABLE: @@ -3642,6 +3644,7 @@ static const struct tty_operations ops = { .hangup = hangup, .tiocmget = tiocmget, .tiocmset = tiocmset, + .get_icount = get_icount, .proc_fops = &synclink_gt_proc_fops, }; diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c index e56caf7d82aa..2f9eb4b0dec1 100644 --- a/drivers/char/synclinkmp.c +++ b/drivers/char/synclinkmp.c @@ -1258,10 +1258,6 @@ static int ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { SLMP_INFO *info = tty->driver_data; - int error; - struct mgsl_icount cnow; /* kernel counter temps */ - struct serial_icounter_struct __user *p_cuser; /* user space */ - unsigned long flags; void __user *argp = (void __user *)arg; if (debug_level >= DEBUG_LEVEL_INFO) @@ -1272,7 +1268,7 @@ static int ioctl(struct tty_struct *tty, struct file *file, return -ENODEV; if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + (cmd != TIOCMIWAIT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } @@ -1310,40 +1306,38 @@ static int ioctl(struct tty_struct *tty, struct file *file, * NB: both 1->0 and 0->1 transitions are counted except for * RI where only 0->1 is counted. */ - case TIOCGICOUNT: - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->lock,flags); - p_cuser = argp; - PUT_USER(error,cnow.cts, &p_cuser->cts); - if (error) return error; - PUT_USER(error,cnow.dsr, &p_cuser->dsr); - if (error) return error; - PUT_USER(error,cnow.rng, &p_cuser->rng); - if (error) return error; - PUT_USER(error,cnow.dcd, &p_cuser->dcd); - if (error) return error; - PUT_USER(error,cnow.rx, &p_cuser->rx); - if (error) return error; - PUT_USER(error,cnow.tx, &p_cuser->tx); - if (error) return error; - PUT_USER(error,cnow.frame, &p_cuser->frame); - if (error) return error; - PUT_USER(error,cnow.overrun, &p_cuser->overrun); - if (error) return error; - PUT_USER(error,cnow.parity, &p_cuser->parity); - if (error) return error; - PUT_USER(error,cnow.brk, &p_cuser->brk); - if (error) return error; - PUT_USER(error,cnow.buf_overrun, &p_cuser->buf_overrun); - if (error) return error; - return 0; default: return -ENOIOCTLCMD; } return 0; } +static int get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + SLMP_INFO *info = tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->lock,flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + /* * /proc fs routines.... */ @@ -3909,6 +3903,7 @@ static const struct tty_operations ops = { .hangup = hangup, .tiocmget = tiocmget, .tiocmset = tiocmset, + .get_icount = get_icount, .proc_fops = &synclinkmp_proc_fops, }; diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 613c852ee0fe..c05c5af5aa04 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -96,6 +96,7 @@ #include <linux/bitops.h> #include <linux/delay.h> #include <linux/seq_file.h> +#include <linux/serial.h> #include <linux/uaccess.h> #include <asm/system.h> @@ -183,6 +184,8 @@ struct tty_struct *alloc_tty_struct(void) void free_tty_struct(struct tty_struct *tty) { + if (tty->dev) + put_device(tty->dev); kfree(tty->write_buf); tty_buffer_free_all(tty); kfree(tty); @@ -194,12 +197,13 @@ static inline struct tty_struct *file_tty(struct file *file) } /* Associate a new file with the tty structure */ -void tty_add_file(struct tty_struct *tty, struct file *file) +int tty_add_file(struct tty_struct *tty, struct file *file) { struct tty_file_private *priv; - /* XXX: must implement proper error handling in callers */ - priv = kmalloc(sizeof(*priv), GFP_KERNEL|__GFP_NOFAIL); + priv = kmalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; priv->tty = tty; priv->file = file; @@ -208,6 +212,8 @@ void tty_add_file(struct tty_struct *tty, struct file *file) spin_lock(&tty_files_lock); list_add(&priv->list, &tty->tty_files); spin_unlock(&tty_files_lock); + + return 0; } /* Delete file from its tty */ @@ -1875,7 +1881,11 @@ got_driver: return PTR_ERR(tty); } - tty_add_file(tty, filp); + retval = tty_add_file(tty, filp); + if (retval) { + tty_unlock(); + return retval; + } check_tty_count(tty, "tty_open"); if (tty->driver->type == TTY_DRIVER_TYPE_PTY && @@ -2502,6 +2512,20 @@ static int tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int return tty->ops->tiocmset(tty, file, set, clear); } +static int tty_tiocgicount(struct tty_struct *tty, void __user *arg) +{ + int retval = -EINVAL; + struct serial_icounter_struct icount; + memset(&icount, 0, sizeof(icount)); + if (tty->ops->get_icount) + retval = tty->ops->get_icount(tty, &icount); + if (retval != 0) + return retval; + if (copy_to_user(arg, &icount, sizeof(icount))) + return -EFAULT; + return 0; +} + struct tty_struct *tty_pair_get_tty(struct tty_struct *tty) { if (tty->driver->type == TTY_DRIVER_TYPE_PTY && @@ -2622,6 +2646,12 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case TIOCMBIC: case TIOCMBIS: return tty_tiocmset(tty, file, cmd, p); + case TIOCGICOUNT: + retval = tty_tiocgicount(tty, p); + /* For the moment allow fall through to the old method */ + if (retval != -EINVAL) + return retval; + break; case TCFLSH: switch (arg) { case TCIFLUSH: @@ -2783,6 +2813,20 @@ void do_SAK(struct tty_struct *tty) EXPORT_SYMBOL(do_SAK); +static int dev_match_devt(struct device *dev, void *data) +{ + dev_t *devt = data; + return dev->devt == *devt; +} + +/* Must put_device() after it's unused! */ +static struct device *tty_get_device(struct tty_struct *tty) +{ + dev_t devt = tty_devnum(tty); + return class_find_device(tty_class, NULL, &devt, dev_match_devt); +} + + /** * initialize_tty_struct * @tty: tty to initialize @@ -2823,6 +2867,7 @@ void initialize_tty_struct(struct tty_struct *tty, tty->ops = driver->ops; tty->index = idx; tty_line_name(driver, idx, tty->name); + tty->dev = tty_get_device(tty); } /** @@ -2980,6 +3025,7 @@ int tty_register_driver(struct tty_driver *driver) int i; dev_t dev; void **p = NULL; + struct device *d; if (!(driver->flags & TTY_DRIVER_DEVPTS_MEM) && driver->num) { p = kzalloc(driver->num * 2 * sizeof(void *), GFP_KERNEL); @@ -3027,12 +3073,31 @@ int tty_register_driver(struct tty_driver *driver) mutex_unlock(&tty_mutex); if (!(driver->flags & TTY_DRIVER_DYNAMIC_DEV)) { - for (i = 0; i < driver->num; i++) - tty_register_device(driver, i, NULL); + for (i = 0; i < driver->num; i++) { + d = tty_register_device(driver, i, NULL); + if (IS_ERR(d)) { + error = PTR_ERR(d); + goto err; + } + } } proc_tty_register_driver(driver); driver->flags |= TTY_DRIVER_INSTALLED; return 0; + +err: + for (i--; i >= 0; i--) + tty_unregister_device(driver, i); + + mutex_lock(&tty_mutex); + list_del(&driver->tty_drivers); + mutex_unlock(&tty_mutex); + + unregister_chrdev_region(dev, driver->num); + driver->ttys = NULL; + driver->termios = NULL; + kfree(p); + return error; } EXPORT_SYMBOL(tty_register_driver); diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c new file mode 100644 index 000000000000..c40c1612c8a7 --- /dev/null +++ b/drivers/char/ttyprintk.c @@ -0,0 +1,225 @@ +/* + * linux/drivers/char/ttyprintk.c + * + * Copyright (C) 2010 Samo Pogacnik + * + * This program is free software; you can redistribute it and/or modify + * it under the smems of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + */ + +/* + * This pseudo device allows user to make printk messages. It is possible + * to store "console" messages inline with kernel messages for better analyses + * of the boot process, for example. + */ + +#include <linux/device.h> +#include <linux/serial.h> +#include <linux/tty.h> + +struct ttyprintk_port { + struct tty_port port; + struct mutex port_write_mutex; +}; + +static struct ttyprintk_port tpk_port; + +/* + * Our simple preformatting supports transparent output of (time-stamped) + * printk messages (also suitable for logging service): + * - any cr is replaced by nl + * - adds a ttyprintk source tag in front of each line + * - too long message is fragmeted, with '\'nl between fragments + * - TPK_STR_SIZE isn't really the write_room limiting factor, bcause + * it is emptied on the fly during preformatting. + */ +#define TPK_STR_SIZE 508 /* should be bigger then max expected line length */ +#define TPK_MAX_ROOM 4096 /* we could assume 4K for instance */ +static const char *tpk_tag = "[U] "; /* U for User */ +static int tpk_curr; + +static int tpk_printk(const unsigned char *buf, int count) +{ + static char tmp[TPK_STR_SIZE + 4]; + int i = tpk_curr; + + if (buf == NULL) { + /* flush tmp[] */ + if (tpk_curr > 0) { + /* non nl or cr terminated message - add nl */ + tmp[tpk_curr + 0] = '\n'; + tmp[tpk_curr + 1] = '\0'; + printk(KERN_INFO "%s%s", tpk_tag, tmp); + tpk_curr = 0; + } + return i; + } + + for (i = 0; i < count; i++) { + tmp[tpk_curr] = buf[i]; + if (tpk_curr < TPK_STR_SIZE) { + switch (buf[i]) { + case '\r': + /* replace cr with nl */ + tmp[tpk_curr + 0] = '\n'; + tmp[tpk_curr + 1] = '\0'; + printk(KERN_INFO "%s%s", tpk_tag, tmp); + tpk_curr = 0; + if (buf[i + 1] == '\n') + i++; + break; + case '\n': + tmp[tpk_curr + 1] = '\0'; + printk(KERN_INFO "%s%s", tpk_tag, tmp); + tpk_curr = 0; + break; + default: + tpk_curr++; + } + } else { + /* end of tmp buffer reached: cut the message in two */ + tmp[tpk_curr + 1] = '\\'; + tmp[tpk_curr + 2] = '\n'; + tmp[tpk_curr + 3] = '\0'; + printk(KERN_INFO "%s%s", tpk_tag, tmp); + tpk_curr = 0; + } + } + + return count; +} + +/* + * TTY operations open function. + */ +static int tpk_open(struct tty_struct *tty, struct file *filp) +{ + tty->driver_data = &tpk_port; + + return tty_port_open(&tpk_port.port, tty, filp); +} + +/* + * TTY operations close function. + */ +static void tpk_close(struct tty_struct *tty, struct file *filp) +{ + struct ttyprintk_port *tpkp = tty->driver_data; + + mutex_lock(&tpkp->port_write_mutex); + /* flush tpk_printk buffer */ + tpk_printk(NULL, 0); + mutex_unlock(&tpkp->port_write_mutex); + + tty_port_close(&tpkp->port, tty, filp); +} + +/* + * TTY operations write function. + */ +static int tpk_write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + struct ttyprintk_port *tpkp = tty->driver_data; + int ret; + + + /* exclusive use of tpk_printk within this tty */ + mutex_lock(&tpkp->port_write_mutex); + ret = tpk_printk(buf, count); + mutex_unlock(&tpkp->port_write_mutex); + + return ret; +} + +/* + * TTY operations write_room function. + */ +static int tpk_write_room(struct tty_struct *tty) +{ + return TPK_MAX_ROOM; +} + +/* + * TTY operations ioctl function. + */ +static int tpk_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct ttyprintk_port *tpkp = tty->driver_data; + + if (!tpkp) + return -EINVAL; + + switch (cmd) { + /* Stop TIOCCONS */ + case TIOCCONS: + return -EOPNOTSUPP; + default: + return -ENOIOCTLCMD; + } + return 0; +} + +static const struct tty_operations ttyprintk_ops = { + .open = tpk_open, + .close = tpk_close, + .write = tpk_write, + .write_room = tpk_write_room, + .ioctl = tpk_ioctl, +}; + +struct tty_port_operations null_ops = { }; + +static struct tty_driver *ttyprintk_driver; + +static int __init ttyprintk_init(void) +{ + int ret = -ENOMEM; + void *rp; + + ttyprintk_driver = alloc_tty_driver(1); + if (!ttyprintk_driver) + return ret; + + ttyprintk_driver->owner = THIS_MODULE; + ttyprintk_driver->driver_name = "ttyprintk"; + ttyprintk_driver->name = "ttyprintk"; + ttyprintk_driver->major = TTYAUX_MAJOR; + ttyprintk_driver->minor_start = 3; + ttyprintk_driver->num = 1; + ttyprintk_driver->type = TTY_DRIVER_TYPE_CONSOLE; + ttyprintk_driver->init_termios = tty_std_termios; + ttyprintk_driver->init_termios.c_oflag = OPOST | OCRNL | ONOCR | ONLRET; + ttyprintk_driver->flags = TTY_DRIVER_RESET_TERMIOS | + TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + tty_set_operations(ttyprintk_driver, &ttyprintk_ops); + + ret = tty_register_driver(ttyprintk_driver); + if (ret < 0) { + printk(KERN_ERR "Couldn't register ttyprintk driver\n"); + goto error; + } + + /* create our unnumbered device */ + rp = device_create(tty_class, NULL, MKDEV(TTYAUX_MAJOR, 3), NULL, + ttyprintk_driver->name); + if (IS_ERR(rp)) { + printk(KERN_ERR "Couldn't create ttyprintk device\n"); + ret = PTR_ERR(rp); + goto error; + } + + tty_port_init(&tpk_port.port); + tpk_port.port.ops = &null_ops; + mutex_init(&tpk_port.port_write_mutex); + + return 0; + +error: + put_tty_driver(ttyprintk_driver); + ttyprintk_driver = NULL; + return ret; +} +module_init(ttyprintk_init); diff --git a/drivers/char/vc_screen.c b/drivers/char/vc_screen.c index bcce46c96b88..273ab44cc91d 100644 --- a/drivers/char/vc_screen.c +++ b/drivers/char/vc_screen.c @@ -35,6 +35,12 @@ #include <linux/console.h> #include <linux/device.h> #include <linux/smp_lock.h> +#include <linux/sched.h> +#include <linux/fs.h> +#include <linux/poll.h> +#include <linux/signal.h> +#include <linux/slab.h> +#include <linux/notifier.h> #include <asm/uaccess.h> #include <asm/byteorder.h> @@ -45,6 +51,86 @@ #undef addr #define HEADER_SIZE 4 +struct vcs_poll_data { + struct notifier_block notifier; + unsigned int cons_num; + bool seen_last_update; + wait_queue_head_t waitq; + struct fasync_struct *fasync; +}; + +static int +vcs_notifier(struct notifier_block *nb, unsigned long code, void *_param) +{ + struct vt_notifier_param *param = _param; + struct vc_data *vc = param->vc; + struct vcs_poll_data *poll = + container_of(nb, struct vcs_poll_data, notifier); + int currcons = poll->cons_num; + + if (code != VT_UPDATE) + return NOTIFY_DONE; + + if (currcons == 0) + currcons = fg_console; + else + currcons--; + if (currcons != vc->vc_num) + return NOTIFY_DONE; + + poll->seen_last_update = false; + wake_up_interruptible(&poll->waitq); + kill_fasync(&poll->fasync, SIGIO, POLL_IN); + return NOTIFY_OK; +} + +static void +vcs_poll_data_free(struct vcs_poll_data *poll) +{ + unregister_vt_notifier(&poll->notifier); + kfree(poll); +} + +static struct vcs_poll_data * +vcs_poll_data_get(struct file *file) +{ + struct vcs_poll_data *poll = file->private_data; + + if (poll) + return poll; + + poll = kzalloc(sizeof(*poll), GFP_KERNEL); + if (!poll) + return NULL; + poll->cons_num = iminor(file->f_path.dentry->d_inode) & 127; + init_waitqueue_head(&poll->waitq); + poll->notifier.notifier_call = vcs_notifier; + if (register_vt_notifier(&poll->notifier) != 0) { + kfree(poll); + return NULL; + } + + /* + * This code may be called either through ->poll() or ->fasync(). + * If we have two threads using the same file descriptor, they could + * both enter this function, both notice that the structure hasn't + * been allocated yet and go ahead allocating it in parallel, but + * only one of them must survive and be shared otherwise we'd leak + * memory with a dangling notifier callback. + */ + spin_lock(&file->f_lock); + if (!file->private_data) { + file->private_data = poll; + } else { + /* someone else raced ahead of us */ + vcs_poll_data_free(poll); + poll = file->private_data; + } + spin_unlock(&file->f_lock); + + return poll; +} + static int vcs_size(struct inode *inode) { @@ -102,6 +188,7 @@ vcs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) struct inode *inode = file->f_path.dentry->d_inode; unsigned int currcons = iminor(inode); struct vc_data *vc; + struct vcs_poll_data *poll; long pos; long viewed, attr, read; int col, maxcol; @@ -134,6 +221,9 @@ vcs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) ret = -EINVAL; if (pos < 0) goto unlock_out; + poll = file->private_data; + if (count && poll) + poll->seen_last_update = true; read = 0; ret = 0; while (count) { @@ -448,6 +538,8 @@ vcs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) } *ppos += written; ret = written; + if (written) + vcs_scr_updated(vc); unlock_out: release_console_sem(); @@ -457,6 +549,37 @@ unlock_out: return ret; } +static unsigned int +vcs_poll(struct file *file, poll_table *wait) +{ + struct vcs_poll_data *poll = vcs_poll_data_get(file); + int ret = 0; + + if (poll) { + poll_wait(file, &poll->waitq, wait); + if (!poll->seen_last_update) + ret = POLLIN | POLLRDNORM; + } + return ret; +} + +static int +vcs_fasync(int fd, struct file *file, int on) +{ + struct vcs_poll_data *poll = file->private_data; + + if (!poll) { + /* don't allocate anything if all we want is disable fasync */ + if (!on) + return 0; + poll = vcs_poll_data_get(file); + if (!poll) + return -ENOMEM; + } + + return fasync_helper(fd, file, on, &poll->fasync); +} + static int vcs_open(struct inode *inode, struct file *filp) { @@ -470,11 +593,23 @@ vcs_open(struct inode *inode, struct file *filp) return ret; } +static int vcs_release(struct inode *inode, struct file *file) +{ + struct vcs_poll_data *poll = file->private_data; + + if (poll) + vcs_poll_data_free(poll); + return 0; +} + static const struct file_operations vcs_fops = { .llseek = vcs_lseek, .read = vcs_read, .write = vcs_write, + .poll = vcs_poll, + .fasync = vcs_fasync, .open = vcs_open, + .release = vcs_release, }; static struct class *vc_class; diff --git a/drivers/char/vt.c b/drivers/char/vt.c index 281aada7b4a1..a8ec48ed14d9 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -4182,6 +4182,11 @@ void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org) } } +void vcs_scr_updated(struct vc_data *vc) +{ + notify_update(vc); +} + /* * Visible symbols for modules */ diff --git a/drivers/input/serio/serport.c b/drivers/input/serio/serport.c index 6d345112bcb7..6e362de3f412 100644 --- a/drivers/input/serio/serport.c +++ b/drivers/input/serio/serport.c @@ -165,6 +165,7 @@ static ssize_t serport_ldisc_read(struct tty_struct * tty, struct file * file, u serio->open = serport_serio_open; serio->close = serport_serio_close; serio->port_data = serport; + serio->dev.parent = tty->dev; serio_register_port(serport->serio); printk(KERN_INFO "serio: Serial port %s\n", tty_name(tty, name)); diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index 1cd752f9a6e1..b8e957249132 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -1645,11 +1645,11 @@ hso_wait_modem_status(struct hso_serial *serial, unsigned long arg) * NB: both 1->0 and 0->1 transitions are counted except for * RI where only 0->1 is counted. */ -static int hso_get_count(struct hso_serial *serial, - struct serial_icounter_struct __user *icnt) +static int hso_get_count(struct tty_struct *tty, + struct serial_icounter_struct *icount) { - struct serial_icounter_struct icount; struct uart_icount cnow; + struct hso_serial *serial = get_serial_by_tty(tty); struct hso_tiocmget *tiocmget = serial->tiocmget; memset(&icount, 0, sizeof(struct serial_icounter_struct)); @@ -1660,19 +1660,19 @@ static int hso_get_count(struct hso_serial *serial, memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount)); spin_unlock_irq(&serial->serial_lock); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; - return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0; + return 0; } @@ -1764,10 +1764,6 @@ static int hso_serial_ioctl(struct tty_struct *tty, struct file *file, case TIOCMIWAIT: ret = hso_wait_modem_status(serial, arg); break; - - case TIOCGICOUNT: - ret = hso_get_count(serial, uarg); - break; default: ret = -ENOIOCTLCMD; break; @@ -3300,6 +3296,7 @@ static const struct tty_operations hso_serial_ops = { .chars_in_buffer = hso_serial_chars_in_buffer, .tiocmget = hso_serial_tiocmget, .tiocmset = hso_serial_tiocmset, + .get_icount = hso_get_count, .unthrottle = hso_unthrottle }; diff --git a/drivers/serial/68360serial.c b/drivers/serial/68360serial.c index 0dff3bbddc8b..88b13356ec10 100644 --- a/drivers/serial/68360serial.c +++ b/drivers/serial/68360serial.c @@ -1381,6 +1381,30 @@ static void send_break(ser_info_t *info, unsigned int duration) } +/* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ +static int rs_360_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + ser_info_t *info = (ser_info_t *)tty->driver_data; + struct async_icount cnow; + + local_irq_disable(); + cnow = info->state->icount; + local_irq_enable(); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + + return 0; +} + static int rs_360_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) { @@ -1394,7 +1418,7 @@ static int rs_360_ioctl(struct tty_struct *tty, struct file * file, if (serial_paranoia_check(info, tty->name, "rs_ioctl")) return -ENODEV; - if ((cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + if (cmd != TIOCMIWAIT) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } @@ -1477,31 +1501,6 @@ static int rs_360_ioctl(struct tty_struct *tty, struct file * file, return 0; #endif - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: - local_irq_disable(); - cnow = info->state->icount; - local_irq_enable(); - p_cuser = (struct serial_icounter_struct *) arg; -/* error = put_user(cnow.cts, &p_cuser->cts); */ -/* if (error) return error; */ -/* error = put_user(cnow.dsr, &p_cuser->dsr); */ -/* if (error) return error; */ -/* error = put_user(cnow.rng, &p_cuser->rng); */ -/* if (error) return error; */ -/* error = put_user(cnow.dcd, &p_cuser->dcd); */ -/* if (error) return error; */ - - put_user(cnow.cts, &p_cuser->cts); - put_user(cnow.dsr, &p_cuser->dsr); - put_user(cnow.rng, &p_cuser->rng); - put_user(cnow.dcd, &p_cuser->dcd); - return 0; default: return -ENOIOCTLCMD; diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 24110f6f61e0..167c4a6ccbc3 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -31,6 +31,7 @@ #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/tty.h> +#include <linux/ratelimit.h> #include <linux/tty_flip.h> #include <linux/serial_reg.h> #include <linux/serial_core.h> @@ -154,12 +155,6 @@ struct uart_8250_port { unsigned char lsr_saved_flags; #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA unsigned char msr_saved_flags; - - /* - * We provide a per-port pm hook. - */ - void (*pm)(struct uart_port *port, - unsigned int state, unsigned int old); }; struct irq_info { @@ -1606,8 +1601,8 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id) if (l == i->head && pass_counter++ > PASS_LIMIT) { /* If we hit this, we're dead. */ - printk(KERN_ERR "serial8250: too much work for " - "irq%d\n", irq); + printk_ratelimited(KERN_ERR + "serial8250: too much work for irq%d\n", irq); break; } } while (l != end); @@ -1722,12 +1717,6 @@ static void serial_unlink_irq_chain(struct uart_8250_port *up) mutex_unlock(&hash_mutex); } -/* Base timer interval for polling */ -static inline int poll_timeout(int timeout) -{ - return timeout > 6 ? (timeout / 2 - 2) : 1; -} - /* * This function is used to handle ports that do not have an * interrupt. This doesn't work very well for 16450's, but gives @@ -1742,7 +1731,7 @@ static void serial8250_timeout(unsigned long data) iir = serial_in(up, UART_IIR); if (!(iir & UART_IIR_NO_INT)) serial8250_handle_port(up); - mod_timer(&up->timer, jiffies + poll_timeout(up->port.timeout)); + mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port)); } static void serial8250_backup_timeout(unsigned long data) @@ -1787,7 +1776,7 @@ static void serial8250_backup_timeout(unsigned long data) /* Standard timer interval plus 0.2s to keep the port running */ mod_timer(&up->timer, - jiffies + poll_timeout(up->port.timeout) + HZ / 5); + jiffies + uart_poll_timeout(&up->port) + HZ / 5); } static unsigned int serial8250_tx_empty(struct uart_port *port) @@ -1867,15 +1856,17 @@ static void wait_for_xmitr(struct uart_8250_port *up, int bits) unsigned int status, tmout = 10000; /* Wait up to 10ms for the character(s) to be sent. */ - do { + for (;;) { status = serial_in(up, UART_LSR); up->lsr_saved_flags |= status & LSR_SAVE_FLAGS; + if ((status & bits) == bits) + break; if (--tmout == 0) break; udelay(1); - } while ((status & bits) != bits); + } /* Wait up to 1s for flow control if necessary */ if (up->port.flags & UPF_CONS_FLOW) { @@ -2069,7 +2060,7 @@ static int serial8250_startup(struct uart_port *port) up->timer.function = serial8250_backup_timeout; up->timer.data = (unsigned long)up; mod_timer(&up->timer, jiffies + - poll_timeout(up->port.timeout) + HZ / 5); + uart_poll_timeout(port) + HZ / 5); } /* @@ -2079,7 +2070,7 @@ static int serial8250_startup(struct uart_port *port) */ if (!is_real_interrupt(up->port.irq)) { up->timer.data = (unsigned long)up; - mod_timer(&up->timer, jiffies + poll_timeout(up->port.timeout)); + mod_timer(&up->timer, jiffies + uart_poll_timeout(port)); } else { retval = serial_link_irq_chain(up); if (retval) @@ -2440,16 +2431,24 @@ serial8250_set_ldisc(struct uart_port *port, int new) port->flags &= ~UPF_HARDPPS_CD; } -static void -serial8250_pm(struct uart_port *port, unsigned int state, - unsigned int oldstate) + +void serial8250_do_pm(struct uart_port *port, unsigned int state, + unsigned int oldstate) { struct uart_8250_port *p = (struct uart_8250_port *)port; serial8250_set_sleep(p, state != 0); +} +EXPORT_SYMBOL(serial8250_do_pm); - if (p->pm) - p->pm(port, state, oldstate); +static void +serial8250_pm(struct uart_port *port, unsigned int state, + unsigned int oldstate) +{ + if (port->pm) + port->pm(port, state, oldstate); + else + serial8250_do_pm(port, state, oldstate); } static unsigned int serial8250_port_size(struct uart_8250_port *pt) @@ -2674,6 +2673,16 @@ static struct uart_ops serial8250_pops = { static struct uart_8250_port serial8250_ports[UART_NR]; +static void (*serial8250_isa_config)(int port, struct uart_port *up, + unsigned short *capabilities); + +void serial8250_set_isa_configurator( + void (*v)(int port, struct uart_port *up, unsigned short *capabilities)) +{ + serial8250_isa_config = v; +} +EXPORT_SYMBOL(serial8250_set_isa_configurator); + static void __init serial8250_isa_init_ports(void) { struct uart_8250_port *up; @@ -2719,6 +2728,9 @@ static void __init serial8250_isa_init_ports(void) up->port.regshift = old_serial_port[i].iomem_reg_shift; set_io_from_upio(&up->port); up->port.irqflags |= irqflag; + if (serial8250_isa_config != NULL) + serial8250_isa_config(i, &up->port, &up->capabilities); + } } @@ -3010,6 +3022,7 @@ static int __devinit serial8250_probe(struct platform_device *dev) port.serial_in = p->serial_in; port.serial_out = p->serial_out; port.set_termios = p->set_termios; + port.pm = p->pm; port.dev = &dev->dev; port.irqflags |= irqflag; ret = serial8250_register_port(&port); @@ -3176,6 +3189,12 @@ int serial8250_register_port(struct uart_port *port) /* Possibly override set_termios call */ if (port->set_termios) uart->port.set_termios = port->set_termios; + if (port->pm) + uart->port.pm = port->pm; + + if (serial8250_isa_config != NULL) + serial8250_isa_config(0, &uart->port, + &uart->capabilities); ret = uart_add_one_port(&serial8250_reg, &uart->port); if (ret == 0) diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 3198c5335f0b..927816484397 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -718,13 +718,6 @@ config SERIAL_MRST_MAX3110 the Intel Moorestown platform. On other systems use the max3100 driver. -config MRST_MAX3110_IRQ - boolean "Enable GPIO IRQ for Max3110 over Moorestown" - default n - depends on SERIAL_MRST_MAX3110 && GPIO_LANGWELL - help - This has to be enabled after Moorestown GPIO driver is loaded - config SERIAL_MFD_HSU tristate "Medfield High Speed UART support" depends on PCI diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c index f8d8a00554da..721216292a50 100644 --- a/drivers/serial/altera_uart.c +++ b/drivers/serial/altera_uart.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/timer.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/console.h> @@ -27,6 +28,8 @@ #include <linux/altera_uart.h> #define DRV_NAME "altera_uart" +#define SERIAL_ALTERA_MAJOR 204 +#define SERIAL_ALTERA_MINOR 213 /* * Altera UART register definitions according to the Nios UART datasheet: @@ -76,13 +79,28 @@ */ struct altera_uart { struct uart_port port; + struct timer_list tmr; unsigned int sigs; /* Local copy of line sigs */ unsigned short imr; /* Local IMR mirror */ }; +static u32 altera_uart_readl(struct uart_port *port, int reg) +{ + struct altera_uart_platform_uart *platp = port->private_data; + + return readl(port->membase + (reg << platp->bus_shift)); +} + +static void altera_uart_writel(struct uart_port *port, u32 dat, int reg) +{ + struct altera_uart_platform_uart *platp = port->private_data; + + writel(dat, port->membase + (reg << platp->bus_shift)); +} + static unsigned int altera_uart_tx_empty(struct uart_port *port) { - return (readl(port->membase + ALTERA_UART_STATUS_REG) & + return (altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_TMT_MSK) ? TIOCSER_TEMT : 0; } @@ -91,8 +109,7 @@ static unsigned int altera_uart_get_mctrl(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); unsigned int sigs; - sigs = - (readl(port->membase + ALTERA_UART_STATUS_REG) & + sigs = (altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_CTS_MSK) ? TIOCM_CTS : 0; sigs |= (pp->sigs & TIOCM_RTS); @@ -108,7 +125,7 @@ static void altera_uart_set_mctrl(struct uart_port *port, unsigned int sigs) pp->imr |= ALTERA_UART_CONTROL_RTS_MSK; else pp->imr &= ~ALTERA_UART_CONTROL_RTS_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_start_tx(struct uart_port *port) @@ -116,7 +133,7 @@ static void altera_uart_start_tx(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); pp->imr |= ALTERA_UART_CONTROL_TRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_stop_tx(struct uart_port *port) @@ -124,7 +141,7 @@ static void altera_uart_stop_tx(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); pp->imr &= ~ALTERA_UART_CONTROL_TRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_stop_rx(struct uart_port *port) @@ -132,7 +149,7 @@ static void altera_uart_stop_rx(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); pp->imr &= ~ALTERA_UART_CONTROL_RRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_break_ctl(struct uart_port *port, int break_state) @@ -145,7 +162,7 @@ static void altera_uart_break_ctl(struct uart_port *port, int break_state) pp->imr |= ALTERA_UART_CONTROL_TRBK_MSK; else pp->imr &= ~ALTERA_UART_CONTROL_TRBK_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); spin_unlock_irqrestore(&port->lock, flags); } @@ -168,7 +185,8 @@ static void altera_uart_set_termios(struct uart_port *port, tty_termios_encode_baud_rate(termios, baud, baud); spin_lock_irqsave(&port->lock, flags); - writel(baudclk, port->membase + ALTERA_UART_DIVISOR_REG); + uart_update_timeout(port, termios->c_cflag, baud); + altera_uart_writel(port, baudclk, ALTERA_UART_DIVISOR_REG); spin_unlock_irqrestore(&port->lock, flags); } @@ -178,14 +196,15 @@ static void altera_uart_rx_chars(struct altera_uart *pp) unsigned char ch, flag; unsigned short status; - while ((status = readl(port->membase + ALTERA_UART_STATUS_REG)) & + while ((status = altera_uart_readl(port, ALTERA_UART_STATUS_REG)) & ALTERA_UART_STATUS_RRDY_MSK) { - ch = readl(port->membase + ALTERA_UART_RXDATA_REG); + ch = altera_uart_readl(port, ALTERA_UART_RXDATA_REG); flag = TTY_NORMAL; port->icount.rx++; if (status & ALTERA_UART_STATUS_E_MSK) { - writel(status, port->membase + ALTERA_UART_STATUS_REG); + altera_uart_writel(port, status, + ALTERA_UART_STATUS_REG); if (status & ALTERA_UART_STATUS_BRK_MSK) { port->icount.brk++; @@ -225,18 +244,18 @@ static void altera_uart_tx_chars(struct altera_uart *pp) if (port->x_char) { /* Send special char - probably flow control */ - writel(port->x_char, port->membase + ALTERA_UART_TXDATA_REG); + altera_uart_writel(port, port->x_char, ALTERA_UART_TXDATA_REG); port->x_char = 0; port->icount.tx++; return; } - while (readl(port->membase + ALTERA_UART_STATUS_REG) & + while (altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_TRDY_MSK) { if (xmit->head == xmit->tail) break; - writel(xmit->buf[xmit->tail], - port->membase + ALTERA_UART_TXDATA_REG); + altera_uart_writel(port, xmit->buf[xmit->tail], + ALTERA_UART_TXDATA_REG); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); port->icount.tx++; } @@ -246,7 +265,7 @@ static void altera_uart_tx_chars(struct altera_uart *pp) if (xmit->head == xmit->tail) { pp->imr &= ~ALTERA_UART_CONTROL_TRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } } @@ -256,7 +275,7 @@ static irqreturn_t altera_uart_interrupt(int irq, void *data) struct altera_uart *pp = container_of(port, struct altera_uart, port); unsigned int isr; - isr = readl(port->membase + ALTERA_UART_STATUS_REG) & pp->imr; + isr = altera_uart_readl(port, ALTERA_UART_STATUS_REG) & pp->imr; spin_lock(&port->lock); if (isr & ALTERA_UART_STATUS_RRDY_MSK) @@ -268,14 +287,23 @@ static irqreturn_t altera_uart_interrupt(int irq, void *data) return IRQ_RETVAL(isr); } +static void altera_uart_timer(unsigned long data) +{ + struct uart_port *port = (void *)data; + struct altera_uart *pp = container_of(port, struct altera_uart, port); + + altera_uart_interrupt(0, port); + mod_timer(&pp->tmr, jiffies + uart_poll_timeout(port)); +} + static void altera_uart_config_port(struct uart_port *port, int flags) { port->type = PORT_ALTERA_UART; /* Clear mask, so no surprise interrupts. */ - writel(0, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, 0, ALTERA_UART_CONTROL_REG); /* Clear status register */ - writel(0, port->membase + ALTERA_UART_STATUS_REG); + altera_uart_writel(port, 0, ALTERA_UART_STATUS_REG); } static int altera_uart_startup(struct uart_port *port) @@ -284,6 +312,12 @@ static int altera_uart_startup(struct uart_port *port) unsigned long flags; int ret; + if (!port->irq) { + setup_timer(&pp->tmr, altera_uart_timer, (unsigned long)port); + mod_timer(&pp->tmr, jiffies + uart_poll_timeout(port)); + return 0; + } + ret = request_irq(port->irq, altera_uart_interrupt, IRQF_DISABLED, DRV_NAME, port); if (ret) { @@ -316,7 +350,10 @@ static void altera_uart_shutdown(struct uart_port *port) spin_unlock_irqrestore(&port->lock, flags); - free_irq(port->irq, port); + if (port->irq) + free_irq(port->irq, port); + else + del_timer_sync(&pp->tmr); } static const char *altera_uart_type(struct uart_port *port) @@ -384,8 +421,9 @@ int __init early_altera_uart_setup(struct altera_uart_platform_uart *platp) port->iotype = SERIAL_IO_MEM; port->irq = platp[i].irq; port->uartclk = platp[i].uartclk; - port->flags = ASYNC_BOOT_AUTOCONF; + port->flags = UPF_BOOT_AUTOCONF; port->ops = &altera_uart_ops; + port->private_data = platp; } return 0; @@ -393,7 +431,7 @@ int __init early_altera_uart_setup(struct altera_uart_platform_uart *platp) static void altera_uart_console_putc(struct uart_port *port, const char c) { - while (!(readl(port->membase + ALTERA_UART_STATUS_REG) & + while (!(altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_TRDY_MSK)) cpu_relax(); @@ -423,7 +461,7 @@ static int __init altera_uart_console_setup(struct console *co, char *options) if (co->index < 0 || co->index >= CONFIG_SERIAL_ALTERA_UART_MAXPORTS) return -EINVAL; port = &altera_uart_ports[co->index].port; - if (port->membase == 0) + if (!port->membase) return -ENODEV; if (options) @@ -435,7 +473,7 @@ static int __init altera_uart_console_setup(struct console *co, char *options) static struct uart_driver altera_uart_driver; static struct console altera_uart_console = { - .name = "ttyS", + .name = "ttyAL", .write = altera_uart_console_write, .device = uart_console_device, .setup = altera_uart_console_setup, @@ -466,9 +504,9 @@ console_initcall(altera_uart_console_init); static struct uart_driver altera_uart_driver = { .owner = THIS_MODULE, .driver_name = DRV_NAME, - .dev_name = "ttyS", - .major = TTY_MAJOR, - .minor = 64, + .dev_name = "ttyAL", + .major = SERIAL_ALTERA_MAJOR, + .minor = SERIAL_ALTERA_MINOR, .nr = CONFIG_SERIAL_ALTERA_UART_MAXPORTS, .cons = ALTERA_UART_CONSOLE, }; @@ -477,38 +515,55 @@ static int __devinit altera_uart_probe(struct platform_device *pdev) { struct altera_uart_platform_uart *platp = pdev->dev.platform_data; struct uart_port *port; - int i; + struct resource *res_mem; + struct resource *res_irq; + int i = pdev->id; - for (i = 0; i < CONFIG_SERIAL_ALTERA_UART_MAXPORTS && platp[i].mapbase; i++) { - port = &altera_uart_ports[i].port; + /* -1 emphasizes that the platform must have one port, no .N suffix */ + if (i == -1) + i = 0; - port->line = i; - port->type = PORT_ALTERA_UART; - port->mapbase = platp[i].mapbase; - port->membase = ioremap(port->mapbase, ALTERA_UART_SIZE); - port->iotype = SERIAL_IO_MEM; - port->irq = platp[i].irq; - port->uartclk = platp[i].uartclk; - port->ops = &altera_uart_ops; - port->flags = ASYNC_BOOT_AUTOCONF; + if (i >= CONFIG_SERIAL_ALTERA_UART_MAXPORTS) + return -EINVAL; - uart_add_one_port(&altera_uart_driver, port); - } + port = &altera_uart_ports[i].port; + + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res_mem) + port->mapbase = res_mem->start; + else if (platp->mapbase) + port->mapbase = platp->mapbase; + else + return -EINVAL; + + res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (res_irq) + port->irq = res_irq->start; + else if (platp->irq) + port->irq = platp->irq; + + port->membase = ioremap(port->mapbase, ALTERA_UART_SIZE); + if (!port->membase) + return -ENOMEM; + + port->line = i; + port->type = PORT_ALTERA_UART; + port->iotype = SERIAL_IO_MEM; + port->uartclk = platp->uartclk; + port->ops = &altera_uart_ops; + port->flags = UPF_BOOT_AUTOCONF; + port->private_data = platp; + + uart_add_one_port(&altera_uart_driver, port); return 0; } static int __devexit altera_uart_remove(struct platform_device *pdev) { - struct uart_port *port; - int i; - - for (i = 0; i < CONFIG_SERIAL_ALTERA_UART_MAXPORTS; i++) { - port = &altera_uart_ports[i].port; - if (port) - uart_remove_one_port(&altera_uart_driver, port); - } + struct uart_port *port = &altera_uart_ports[pdev->id].port; + uart_remove_one_port(&altera_uart_driver, port); return 0; } @@ -550,3 +605,4 @@ MODULE_DESCRIPTION("Altera UART driver"); MODULE_AUTHOR("Thomas Chou <thomas@wytron.com.tw>"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" DRV_NAME); +MODULE_ALIAS_CHARDEV_MAJOR(SERIAL_ALTERA_MAJOR); diff --git a/drivers/serial/bfin_sport_uart.c b/drivers/serial/bfin_sport_uart.c index 5318dd3774ae..6f1b51e231e4 100644 --- a/drivers/serial/bfin_sport_uart.c +++ b/drivers/serial/bfin_sport_uart.c @@ -131,7 +131,12 @@ static int sport_uart_setup(struct sport_uart_port *up, int size, int baud_rate) pr_debug("%s RCR1:%x, RCR2:%x\n", __func__, SPORT_GET_RCR1(up), SPORT_GET_RCR2(up)); tclkdiv = sclk / (2 * baud_rate) - 1; - rclkdiv = sclk / (2 * baud_rate * 2) - 1; + /* The actual uart baud rate of devices vary between +/-2%. The sport + * RX sample rate should be faster than the double of the worst case, + * otherwise, wrong data are received. So, set sport RX clock to be + * 3% faster. + */ + rclkdiv = sclk / (2 * baud_rate * 2 * 97 / 100) - 1; SPORT_PUT_TCLKDIV(up, tclkdiv); SPORT_PUT_RCLKDIV(up, rclkdiv); SSYNC(); diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index 66ecc7ab6dab..dfcf4b1878aa 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -327,14 +327,13 @@ static inline void imx_transmit_buffer(struct imx_port *sport) { struct circ_buf *xmit = &sport->port.state->xmit; - while (!(readl(sport->port.membase + UTS) & UTS_TXFULL)) { + while (!uart_circ_empty(xmit) && + !(readl(sport->port.membase + UTS) & UTS_TXFULL)) { /* send xmit->buf[xmit->tail] * out the port here */ writel(xmit->buf[xmit->tail], sport->port.membase + URTX0); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); sport->port.icount.tx++; - if (uart_circ_empty(xmit)) - break; } if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c index eaf545014119..18f548449c63 100644 --- a/drivers/serial/jsm/jsm_driver.c +++ b/drivers/serial/jsm/jsm_driver.c @@ -172,13 +172,15 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device jsm_uart_port_init here! */ dev_err(&pdev->dev, "memory allocation for flipbuf failed\n"); rc = -ENOMEM; - goto out_free_irq; + goto out_free_uart; } pci_set_drvdata(pdev, brd); pci_save_state(pdev); return 0; + out_free_uart: + jsm_remove_uart_port(brd); out_free_irq: jsm_remove_uart_port(brd); free_irq(brd->irq, brd); diff --git a/drivers/serial/max3107.c b/drivers/serial/max3107.c index 67283c1a57ff..910870edf708 100644 --- a/drivers/serial/max3107.c +++ b/drivers/serial/max3107.c @@ -986,12 +986,14 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) s->rxbuf = kzalloc(sizeof(u16) * (MAX3107_RX_FIFO_SIZE+2), GFP_KERNEL); if (!s->rxbuf) { pr_err("Allocating RX buffer failed\n"); - return -ENOMEM; + retval = -ENOMEM; + goto err_free4; } s->rxstr = kzalloc(sizeof(u8) * MAX3107_RX_FIFO_SIZE, GFP_KERNEL); if (!s->rxstr) { pr_err("Allocating RX buffer failed\n"); - return -ENOMEM; + retval = -ENOMEM; + goto err_free3; } /* SPI Tx buffer * SPI transfer buffer @@ -1002,7 +1004,8 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) s->txbuf = kzalloc(sizeof(u16) * MAX3107_TX_FIFO_SIZE + 3, GFP_KERNEL); if (!s->txbuf) { pr_err("Allocating TX buffer failed\n"); - return -ENOMEM; + retval = -ENOMEM; + goto err_free2; } /* Initialize shared data lock */ spin_lock_init(&s->data_lock); @@ -1021,13 +1024,15 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) buf[0] = MAX3107_REVID_REG; if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) { dev_err(&s->spi->dev, "SPI transfer for REVID read failed\n"); - return -EIO; + retval = -EIO; + goto err_free1; } if ((buf[0] & MAX3107_SPI_RX_DATA_MASK) != MAX3107_REVID1 && (buf[0] & MAX3107_SPI_RX_DATA_MASK) != MAX3107_REVID2) { dev_err(&s->spi->dev, "REVID %x does not match\n", (buf[0] & MAX3107_SPI_RX_DATA_MASK)); - return -ENODEV; + retval = -ENODEV; + goto err_free1; } /* Disable all interrupts */ @@ -1047,7 +1052,8 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) /* Perform SPI transfer */ if (max3107_rw(s, (u8 *)buf, NULL, 4)) { dev_err(&s->spi->dev, "SPI transfer for init failed\n"); - return -EIO; + retval = -EIO; + goto err_free1; } /* Register UART driver */ @@ -1055,7 +1061,7 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) retval = uart_register_driver(&max3107_uart_driver); if (retval) { dev_err(&s->spi->dev, "Registering UART driver failed\n"); - return retval; + goto err_free1; } driver_registered = 1; } @@ -1074,13 +1080,13 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) retval = uart_add_one_port(&max3107_uart_driver, &s->port); if (retval < 0) { dev_err(&s->spi->dev, "Adding UART port failed\n"); - return retval; + goto err_free1; } if (pdata->configure) { retval = pdata->configure(s); if (retval < 0) - return retval; + goto err_free1; } /* Go to suspend mode */ @@ -1088,6 +1094,16 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) pdata->hw_suspend(s, 1); return 0; + +err_free1: + kfree(s->txbuf); +err_free2: + kfree(s->rxstr); +err_free3: + kfree(s->rxbuf); +err_free4: + kfree(s); + return retval; } EXPORT_SYMBOL_GPL(max3107_probe); diff --git a/drivers/serial/mfd.c b/drivers/serial/mfd.c index dc0967fb9ea6..5fc699e929dc 100644 --- a/drivers/serial/mfd.c +++ b/drivers/serial/mfd.c @@ -172,6 +172,9 @@ static ssize_t port_show_regs(struct file *file, char __user *user_buf, len += snprintf(buf + len, HSU_REGS_BUFSIZE - len, "DIV: \t\t0x%08x\n", serial_in(up, UART_DIV)); + if (len > HSU_REGS_BUFSIZE) + len = HSU_REGS_BUFSIZE; + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return ret; @@ -219,6 +222,9 @@ static ssize_t dma_show_regs(struct file *file, char __user *user_buf, len += snprintf(buf + len, HSU_REGS_BUFSIZE - len, "D0TSR: \t\t0x%08x\n", chan_readl(chan, HSU_CH_D3TSR)); + if (len > HSU_REGS_BUFSIZE) + len = HSU_REGS_BUFSIZE; + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return ret; @@ -925,39 +931,52 @@ serial_hsu_set_termios(struct uart_port *port, struct ktermios *termios, cval |= UART_LCR_EPAR; /* + * The base clk is 50Mhz, and the baud rate come from: + * baud = 50M * MUL / (DIV * PS * DLAB) + * * For those basic low baud rate we can get the direct - * scalar from 2746800, like 115200 = 2746800/24, for those - * higher baud rate, we have to handle them case by case, - * but DIV reg is never touched as its default value 0x3d09 + * scalar from 2746800, like 115200 = 2746800/24. For those + * higher baud rate, we handle them case by case, mainly by + * adjusting the MUL/PS registers, and DIV register is kept + * as default value 0x3d09 to make things simple */ baud = uart_get_baud_rate(port, termios, old, 0, 4000000); - quot = uart_get_divisor(port, baud); + quot = 1; switch (baud) { case 3500000: mul = 0x3345; ps = 0xC; - quot = 1; + break; + case 3000000: + mul = 0x2EE0; break; case 2500000: mul = 0x2710; - ps = 0x10; - quot = 1; break; - case 18432000: + case 2000000: + mul = 0x1F40; + break; + case 1843200: mul = 0x2400; - ps = 0x10; - quot = 1; break; case 1500000: - mul = 0x1D4C; - ps = 0xc; - quot = 1; + mul = 0x1770; + break; + case 1000000: + mul = 0xFA0; + break; + case 500000: + mul = 0x7D0; break; default: - ; + /* Use uart_get_divisor to get quot for other baud rates */ + quot = 0; } + if (!quot) + quot = uart_get_divisor(port, baud); + if ((up->port.uartclk / quot) < (2400 * 16)) fcr = UART_FCR_ENABLE_FIFO | UART_FCR_HSU_64_1B; else if ((up->port.uartclk / quot) < (230400 * 16)) diff --git a/drivers/serial/mrst_max3110.c b/drivers/serial/mrst_max3110.c index 51c15f58e01e..b62857bf2fdb 100644 --- a/drivers/serial/mrst_max3110.c +++ b/drivers/serial/mrst_max3110.c @@ -1,7 +1,7 @@ /* - * max3110.c - spi uart protocol driver for Maxim 3110 on Moorestown + * mrst_max3110.c - spi uart protocol driver for Maxim 3110 * - * Copyright (C) Intel 2008 Feng Tang <feng.tang@intel.com> + * Copyright (c) 2008-2010, Intel Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -32,18 +32,13 @@ #include <linux/irq.h> #include <linux/init.h> #include <linux/console.h> -#include <linux/sysrq.h> -#include <linux/platform_device.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/serial_core.h> #include <linux/serial_reg.h> #include <linux/kthread.h> -#include <linux/delay.h> -#include <asm/atomic.h> #include <linux/spi/spi.h> -#include <linux/spi/dw_spi.h> #include "mrst_max3110.h" @@ -56,7 +51,7 @@ struct uart_max3110 { struct uart_port port; struct spi_device *spi; - char *name; + char name[24]; wait_queue_head_t wq; struct task_struct *main_thread; @@ -67,35 +62,30 @@ struct uart_max3110 { u16 cur_conf; u8 clock; u8 parity, word_7bits; + u16 irq; unsigned long uart_flags; /* console related */ struct circ_buf con_xmit; - - /* irq related */ - u16 irq; }; /* global data structure, may need be removed */ -struct uart_max3110 *pmax; -static inline void receive_char(struct uart_max3110 *max, u8 ch); +static struct uart_max3110 *pmax; + static void receive_chars(struct uart_max3110 *max, unsigned char *str, int len); -static int max3110_read_multi(struct uart_max3110 *max, int len, u8 *buf); -static void max3110_console_receive(struct uart_max3110 *max); +static int max3110_read_multi(struct uart_max3110 *max, u8 *buf); +static void max3110_con_receive(struct uart_max3110 *max); -int max3110_write_then_read(struct uart_max3110 *max, - const u8 *txbuf, u8 *rxbuf, unsigned len, int always_fast) +static int max3110_write_then_read(struct uart_max3110 *max, + const void *txbuf, void *rxbuf, unsigned len, int always_fast) { struct spi_device *spi = max->spi; struct spi_message message; struct spi_transfer x; int ret; - if (!txbuf || !rxbuf) - return -EINVAL; - spi_message_init(&message); memset(&x, 0, sizeof x); x.len = len; @@ -104,7 +94,7 @@ int max3110_write_then_read(struct uart_max3110 *max, spi_message_add_tail(&x, &message); if (always_fast) - x.speed_hz = 3125000; + x.speed_hz = spi->max_speed_hz; else if (max->baud) x.speed_hz = max->baud; @@ -113,58 +103,80 @@ int max3110_write_then_read(struct uart_max3110 *max, return ret; } -/* Write a u16 to the device, and return one u16 read back */ -int max3110_out(struct uart_max3110 *max, const u16 out) +/* Write a 16b word to the device */ +static int max3110_out(struct uart_max3110 *max, const u16 out) { - u16 tmp; + void *buf; + u16 *obuf, *ibuf; + u8 ch; int ret; - ret = max3110_write_then_read(max, (u8 *)&out, (u8 *)&tmp, 2, 1); - if (ret) - return ret; + buf = kzalloc(8, GFP_KERNEL | GFP_DMA); + if (!buf) + return -ENOMEM; + + obuf = buf; + ibuf = buf + 4; + *obuf = out; + ret = max3110_write_then_read(max, obuf, ibuf, 2, 1); + if (ret) { + pr_warning(PR_FMT "%s(): get err msg %d when sending 0x%x\n", + __func__, ret, out); + goto exit; + } /* If some valid data is read back */ - if (tmp & MAX3110_READ_DATA_AVAILABLE) - receive_char(max, (tmp & 0xff)); + if (*ibuf & MAX3110_READ_DATA_AVAILABLE) { + ch = *ibuf & 0xff; + receive_chars(max, &ch, 1); + } +exit: + kfree(buf); return ret; } -#define MAX_READ_LEN 20 /* * This is usually used to read data from SPIC RX FIFO, which doesn't - * need any delay like flushing character out. It returns how many - * valide bytes are read back + * need any delay like flushing character out. + * + * Return how many valide bytes are read back */ -static int max3110_read_multi(struct uart_max3110 *max, int len, u8 *buf) +static int max3110_read_multi(struct uart_max3110 *max, u8 *rxbuf) { - u16 out[MAX_READ_LEN], in[MAX_READ_LEN]; - u8 *pbuf, valid_str[MAX_READ_LEN]; - int i, j, bytelen; + void *buf; + u16 *obuf, *ibuf; + u8 *pbuf, valid_str[M3110_RX_FIFO_DEPTH]; + int i, j, blen; - if (len > MAX_READ_LEN) { - pr_err(PR_FMT "read len %d is too large\n", len); + blen = M3110_RX_FIFO_DEPTH * sizeof(u16); + buf = kzalloc(blen * 2, GFP_KERNEL | GFP_DMA); + if (!buf) { + pr_warning(PR_FMT "%s(): fail to alloc dma buffer\n", __func__); return 0; } - bytelen = len * 2; - memset(out, 0, bytelen); - memset(in, 0, bytelen); + /* tx/rx always have the same length */ + obuf = buf; + ibuf = buf + blen; - if (max3110_write_then_read(max, (u8 *)out, (u8 *)in, bytelen, 1)) + if (max3110_write_then_read(max, obuf, ibuf, blen, 1)) { + kfree(buf); return 0; + } - /* If caller don't provide a buffer, then handle received char */ - pbuf = buf ? buf : valid_str; + /* If caller doesn't provide a buffer, then handle received char */ + pbuf = rxbuf ? rxbuf : valid_str; - for (i = 0, j = 0; i < len; i++) { - if (in[i] & MAX3110_READ_DATA_AVAILABLE) - pbuf[j++] = (u8)(in[i] & 0xff); + for (i = 0, j = 0; i < M3110_RX_FIFO_DEPTH; i++) { + if (ibuf[i] & MAX3110_READ_DATA_AVAILABLE) + pbuf[j++] = ibuf[i] & 0xff; } if (j && (pbuf == valid_str)) receive_chars(max, valid_str, j); + kfree(buf); return j; } @@ -178,10 +190,6 @@ static void serial_m3110_con_putchar(struct uart_port *port, int ch) xmit->buf[xmit->head] = (char)ch; xmit->head = (xmit->head + 1) & (PAGE_SIZE - 1); } - - - if (!test_and_set_bit(CON_TX_NEEDED, &max->uart_flags)) - wake_up_process(max->main_thread); } /* @@ -197,6 +205,9 @@ static void serial_m3110_con_write(struct console *co, return; uart_console_write(&pmax->port, s, count, serial_m3110_con_putchar); + + if (!test_and_set_bit(CON_TX_NEEDED, &pmax->uart_flags)) + wake_up_process(pmax->main_thread); } static int __init @@ -210,6 +221,9 @@ serial_m3110_con_setup(struct console *co, char *options) pr_info(PR_FMT "setting up console\n"); + if (co->index == -1) + co->index = 0; + if (!max) { pr_err(PR_FMT "pmax is NULL, return"); return -ENODEV; @@ -240,8 +254,6 @@ static struct console serial_m3110_console = { .data = &serial_m3110_reg, }; -#define MRST_CONSOLE (&serial_m3110_console) - static unsigned int serial_m3110_tx_empty(struct uart_port *port) { return 1; @@ -259,32 +271,44 @@ static void serial_m3110_stop_rx(struct uart_port *port) } #define WORDS_PER_XFER 128 -static inline void send_circ_buf(struct uart_max3110 *max, +static void send_circ_buf(struct uart_max3110 *max, struct circ_buf *xmit) { - int len, left = 0; - u16 obuf[WORDS_PER_XFER], ibuf[WORDS_PER_XFER]; + void *buf; + u16 *obuf, *ibuf; u8 valid_str[WORDS_PER_XFER]; - int i, j; + int i, j, len, blen, dma_size, left, ret = 0; + + + dma_size = WORDS_PER_XFER * sizeof(u16) * 2; + buf = kzalloc(dma_size, GFP_KERNEL | GFP_DMA); + if (!buf) + return; + obuf = buf; + ibuf = buf + dma_size/2; while (!uart_circ_empty(xmit)) { left = uart_circ_chars_pending(xmit); while (left) { - len = (left >= WORDS_PER_XFER) ? WORDS_PER_XFER : left; + len = min(left, WORDS_PER_XFER); + blen = len * sizeof(u16); + memset(ibuf, 0, blen); - memset(obuf, 0, len * 2); - memset(ibuf, 0, len * 2); for (i = 0; i < len; i++) { obuf[i] = (u8)xmit->buf[xmit->tail] | WD_TAG; xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); } - max3110_write_then_read(max, (u8 *)obuf, - (u8 *)ibuf, len * 2, 0); + + /* Fail to send msg to console is not very critical */ + ret = max3110_write_then_read(max, obuf, ibuf, blen, 0); + if (ret) + pr_warning(PR_FMT "%s(): get err msg %d\n", + __func__, ret); for (i = 0, j = 0; i < len; i++) { if (ibuf[i] & MAX3110_READ_DATA_AVAILABLE) - valid_str[j++] = (u8)(ibuf[i] & 0xff); + valid_str[j++] = ibuf[i] & 0xff; } if (j) @@ -294,6 +318,8 @@ static inline void send_circ_buf(struct uart_max3110 *max, left -= len; } } + + kfree(buf); } static void transmit_char(struct uart_max3110 *max) @@ -313,8 +339,10 @@ static void transmit_char(struct uart_max3110 *max) serial_m3110_stop_tx(port); } -/* This will be called by uart_write() and tty_write, can't - * go to sleep */ +/* + * This will be called by uart_write() and tty_write, can't + * go to sleep + */ static void serial_m3110_start_tx(struct uart_port *port) { struct uart_max3110 *max = @@ -336,7 +364,7 @@ static void receive_chars(struct uart_max3110 *max, unsigned char *str, int len) tty = port->state->port.tty; if (!tty) - return; /* receive some char before the tty is opened */ + return; while (len) { usable = tty_buffer_request_room(tty, len); @@ -344,32 +372,37 @@ static void receive_chars(struct uart_max3110 *max, unsigned char *str, int len) tty_insert_flip_string(tty, str, usable); str += usable; port->icount.rx += usable; - tty_flip_buffer_push(tty); } len -= usable; } + tty_flip_buffer_push(tty); } -static inline void receive_char(struct uart_max3110 *max, u8 ch) -{ - receive_chars(max, &ch, 1); -} - -static void max3110_console_receive(struct uart_max3110 *max) +/* + * This routine will be used in read_thread or RX IRQ handling, + * it will first do one round buffer read(8 words), if there is some + * valid RX data, will try to read 5 more rounds till all data + * is read out. + * + * Use stack space as data buffer to save some system load, and chose + * 504 Btyes as a threadhold to do a bulk push to upper tty layer when + * receiving bulk data, a much bigger buffer may cause stack overflow + */ +static void max3110_con_receive(struct uart_max3110 *max) { int loop = 1, num, total = 0; u8 recv_buf[512], *pbuf; pbuf = recv_buf; do { - num = max3110_read_multi(max, 8, pbuf); + num = max3110_read_multi(max, pbuf); if (num) { - loop = 10; + loop = 5; pbuf += num; total += num; - if (total >= 500) { + if (total >= 504) { receive_chars(max, recv_buf, total); pbuf = recv_buf; total = 0; @@ -397,7 +430,7 @@ static int max3110_main_thread(void *_max) mutex_lock(&max->thread_mutex); if (test_and_clear_bit(BIT_IRQ_PENDING, &max->uart_flags)) - max3110_console_receive(max); + max3110_con_receive(max); /* first handle console output */ if (test_and_clear_bit(CON_TX_NEEDED, &max->uart_flags)) @@ -414,7 +447,6 @@ static int max3110_main_thread(void *_max) return ret; } -#ifdef CONFIG_MRST_MAX3110_IRQ static irqreturn_t serial_m3110_irq(int irq, void *dev_id) { struct uart_max3110 *max = dev_id; @@ -426,7 +458,7 @@ static irqreturn_t serial_m3110_irq(int irq, void *dev_id) return IRQ_HANDLED; } -#else + /* if don't use RX IRQ, then need a thread to polling read */ static int max3110_read_thread(void *_max) { @@ -434,9 +466,14 @@ static int max3110_read_thread(void *_max) pr_info(PR_FMT "start read thread\n"); do { - mutex_lock(&max->thread_mutex); - max3110_console_receive(max); - mutex_unlock(&max->thread_mutex); + /* + * If can't acquire the mutex, it means the main thread + * is running which will also perform the rx job + */ + if (mutex_trylock(&max->thread_mutex)) { + max3110_con_receive(max); + mutex_unlock(&max->thread_mutex); + } set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(HZ / 20); @@ -444,7 +481,6 @@ static int max3110_read_thread(void *_max) return 0; } -#endif static int serial_m3110_startup(struct uart_port *port) { @@ -453,33 +489,54 @@ static int serial_m3110_startup(struct uart_port *port) u16 config = 0; int ret = 0; - if (port->line != 0) + if (port->line != 0) { pr_err(PR_FMT "uart port startup failed\n"); + return -1; + } - /* firstly disable all IRQ and config it to 115200, 8n1 */ + /* Disable all IRQ and config it to 115200, 8n1 */ config = WC_TAG | WC_FIFO_ENABLE | WC_1_STOPBITS | WC_8BIT_WORD | WC_BAUD_DR2; - ret = max3110_out(max, config); /* as we use thread to handle tx/rx, need set low latency */ port->state->port.tty->low_latency = 1; -#ifdef CONFIG_MRST_MAX3110_IRQ - ret = request_irq(max->irq, serial_m3110_irq, + if (max->irq) { + max->read_thread = NULL; + ret = request_irq(max->irq, serial_m3110_irq, IRQ_TYPE_EDGE_FALLING, "max3110", max); - if (ret) - return ret; + if (ret) { + max->irq = 0; + pr_err(PR_FMT "unable to allocate IRQ, polling\n"); + } else { + /* Enable RX IRQ only */ + config |= WC_RXA_IRQ_ENABLE; + } + } - /* enable RX IRQ only */ - config |= WC_RXA_IRQ_ENABLE; - max3110_out(max, config); -#else - /* if IRQ is disabled, start a read thread for input data */ - max->read_thread = - kthread_run(max3110_read_thread, max, "max3110_read"); -#endif + if (max->irq == 0) { + /* If IRQ is disabled, start a read thread for input data */ + max->read_thread = + kthread_run(max3110_read_thread, max, "max3110_read"); + if (IS_ERR(max->read_thread)) { + ret = PTR_ERR(max->read_thread); + max->read_thread = NULL; + pr_err(PR_FMT "Can't create read thread!\n"); + return ret; + } + } + + ret = max3110_out(max, config); + if (ret) { + if (max->irq) + free_irq(max->irq, max); + if (max->read_thread) + kthread_stop(max->read_thread); + max->read_thread = NULL; + return ret; + } max->cur_conf = config; return 0; @@ -496,9 +553,8 @@ static void serial_m3110_shutdown(struct uart_port *port) max->read_thread = NULL; } -#ifdef CONFIG_MRST_MAX3110_IRQ - free_irq(max->irq, max); -#endif + if (max->irq) + free_irq(max->irq, max); /* Disable interrupts from this port */ config = WC_TAG | WC_SW_SHDI; @@ -516,8 +572,7 @@ static int serial_m3110_request_port(struct uart_port *port) static void serial_m3110_config_port(struct uart_port *port, int flags) { - /* give it fake type */ - port->type = PORT_PXA; + port->type = PORT_MAX3100; } static int @@ -552,6 +607,9 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, new_conf |= WC_7BIT_WORD; break; default: + /* We only support CS7 & CS8 */ + termios->c_cflag &= ~CSIZE; + termios->c_cflag |= CS8; case CS8: cval = UART_LCR_WLEN8; new_conf |= WC_8BIT_WORD; @@ -560,7 +618,7 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, baud = uart_get_baud_rate(port, termios, old, 0, 230400); - /* first calc the div for 1.8MHZ clock case */ + /* First calc the div for 1.8MHZ clock case */ switch (baud) { case 300: clk_div = WC_BAUD_DR384; @@ -596,7 +654,7 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, if (max->clock & MAX3110_HIGH_CLK) break; default: - /* pick the previous baud rate */ + /* Pick the previous baud rate */ baud = max->baud; clk_div = max->cur_conf & WC_BAUD_DIV_MASK; tty_termios_encode_baud_rate(termios, baud, baud); @@ -604,15 +662,21 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, if (max->clock & MAX3110_HIGH_CLK) { clk_div += 1; - /* high clk version max3110 doesn't support B300 */ - if (baud == 300) + /* High clk version max3110 doesn't support B300 */ + if (baud == 300) { baud = 600; + clk_div = WC_BAUD_DR384; + } if (baud == 230400) clk_div = WC_BAUD_DR1; tty_termios_encode_baud_rate(termios, baud, baud); } new_conf = (new_conf & ~WC_BAUD_DIV_MASK) | clk_div; + + if (unlikely(termios->c_cflag & CMSPAR)) + termios->c_cflag &= ~CMSPAR; + if (termios->c_cflag & CSTOPB) new_conf |= WC_2_STOPBITS; else @@ -632,13 +696,14 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, new_conf |= WC_TAG; if (new_conf != max->cur_conf) { - max3110_out(max, new_conf); - max->cur_conf = new_conf; - max->baud = baud; + if (!max3110_out(max, new_conf)) { + max->cur_conf = new_conf; + max->baud = baud; + } } } -/* don't handle hw handshaking */ +/* Don't handle hw handshaking */ static unsigned int serial_m3110_get_mctrl(struct uart_port *port) { return TIOCM_DSR | TIOCM_CAR | TIOCM_DSR; @@ -672,7 +737,7 @@ struct uart_ops serial_m3110_ops = { .break_ctl = serial_m3110_break_ctl, .startup = serial_m3110_startup, .shutdown = serial_m3110_shutdown, - .set_termios = serial_m3110_set_termios, /* must have */ + .set_termios = serial_m3110_set_termios, .pm = serial_m3110_pm, .type = serial_m3110_type, .release_port = serial_m3110_release_port, @@ -688,52 +753,60 @@ static struct uart_driver serial_m3110_reg = { .major = TTY_MAJOR, .minor = 64, .nr = 1, - .cons = MRST_CONSOLE, + .cons = &serial_m3110_console, }; +#ifdef CONFIG_PM static int serial_m3110_suspend(struct spi_device *spi, pm_message_t state) { + struct uart_max3110 *max = spi_get_drvdata(spi); + + disable_irq(max->irq); + uart_suspend_port(&serial_m3110_reg, &max->port); + max3110_out(max, max->cur_conf | WC_SW_SHDI); return 0; } static int serial_m3110_resume(struct spi_device *spi) { + struct uart_max3110 *max = spi_get_drvdata(spi); + + max3110_out(max, max->cur_conf); + uart_resume_port(&serial_m3110_reg, &max->port); + enable_irq(max->irq); return 0; } +#else +#define serial_m3110_suspend NULL +#define serial_m3110_resume NULL +#endif -static struct dw_spi_chip spi0_uart = { - .poll_mode = 1, - .enable_dma = 0, - .type = SPI_FRF_SPI, -}; - -static int serial_m3110_probe(struct spi_device *spi) +static int __devinit serial_m3110_probe(struct spi_device *spi) { struct uart_max3110 *max; - int ret; - unsigned char *buffer; + void *buffer; u16 res; + int ret = 0; + max = kzalloc(sizeof(*max), GFP_KERNEL); if (!max) return -ENOMEM; - /* set spi info */ - spi->mode = SPI_MODE_0; + /* Set spi info */ spi->bits_per_word = 16; max->clock = MAX3110_HIGH_CLK; - spi->controller_data = &spi0_uart; spi_setup(spi); - max->port.type = PORT_PXA; /* need apply for a max3110 type */ - max->port.fifosize = 2; /* only have 16b buffer */ + max->port.type = PORT_MAX3100; + max->port.fifosize = 2; /* Only have 16b buffer */ max->port.ops = &serial_m3110_ops; max->port.line = 0; max->port.dev = &spi->dev; max->port.uartclk = 115200; max->spi = spi; - max->name = spi->modalias; /* use spi name as the name */ + strcpy(max->name, spi->modalias); max->irq = (u16)spi->irq; mutex_init(&max->thread_mutex); @@ -755,13 +828,15 @@ static int serial_m3110_probe(struct spi_device *spi) ret = -ENODEV; goto err_get_page; } - buffer = (unsigned char *)__get_free_page(GFP_KERNEL); + + buffer = (void *)__get_free_page(GFP_KERNEL); if (!buffer) { ret = -ENOMEM; goto err_get_page; } - max->con_xmit.buf = (unsigned char *)buffer; - max->con_xmit.head = max->con_xmit.tail = 0; + max->con_xmit.buf = buffer; + max->con_xmit.head = 0; + max->con_xmit.tail = 0; max->main_thread = kthread_run(max3110_main_thread, max, "max3110_main"); @@ -770,8 +845,10 @@ static int serial_m3110_probe(struct spi_device *spi) goto err_kthread; } + spi_set_drvdata(spi, max); pmax = max; - /* give membase a psudo value to pass serial_core's check */ + + /* Give membase a psudo value to pass serial_core's check */ max->port.membase = (void *)0xff110000; uart_add_one_port(&serial_m3110_reg, &max->port); @@ -780,19 +857,17 @@ static int serial_m3110_probe(struct spi_device *spi) err_kthread: free_page((unsigned long)buffer); err_get_page: - pmax = NULL; kfree(max); return ret; } -static int max3110_remove(struct spi_device *dev) +static int __devexit serial_m3110_remove(struct spi_device *dev) { - struct uart_max3110 *max = pmax; + struct uart_max3110 *max = spi_get_drvdata(dev); - if (!pmax) + if (!max) return 0; - pmax = NULL; uart_remove_one_port(&serial_m3110_reg, &max->port); free_page((unsigned long)max->con_xmit.buf); @@ -811,13 +886,12 @@ static struct spi_driver uart_max3110_driver = { .owner = THIS_MODULE, }, .probe = serial_m3110_probe, - .remove = __devexit_p(max3110_remove), + .remove = __devexit_p(serial_m3110_remove), .suspend = serial_m3110_suspend, .resume = serial_m3110_resume, }; - -int __init serial_m3110_init(void) +static int __init serial_m3110_init(void) { int ret = 0; @@ -832,7 +906,7 @@ int __init serial_m3110_init(void) return ret; } -void __exit serial_m3110_exit(void) +static void __exit serial_m3110_exit(void) { spi_unregister_driver(&uart_max3110_driver); uart_unregister_driver(&serial_m3110_reg); @@ -841,5 +915,5 @@ void __exit serial_m3110_exit(void) module_init(serial_m3110_init); module_exit(serial_m3110_exit); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); MODULE_ALIAS("max3110-uart"); diff --git a/drivers/serial/mrst_max3110.h b/drivers/serial/mrst_max3110.h index 363478acb2c3..d1ef43af397c 100644 --- a/drivers/serial/mrst_max3110.h +++ b/drivers/serial/mrst_max3110.h @@ -56,4 +56,5 @@ #define WC_BAUD_DR192 (0xE) #define WC_BAUD_DR384 (0xF) +#define M3110_RX_FIFO_DEPTH 8 #endif diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index cd8511298bcb..c4ea14670d44 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -1074,10 +1074,10 @@ uart_wait_modem_status(struct uart_state *state, unsigned long arg) * NB: both 1->0 and 0->1 transitions are counted except for * RI where only 0->1 is counted. */ -static int uart_get_count(struct uart_state *state, - struct serial_icounter_struct __user *icnt) +static int uart_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) { - struct serial_icounter_struct icount; + struct uart_state *state = tty->driver_data; struct uart_icount cnow; struct uart_port *uport = state->uart_port; @@ -1085,19 +1085,19 @@ static int uart_get_count(struct uart_state *state, memcpy(&cnow, &uport->icount, sizeof(struct uart_icount)); spin_unlock_irq(&uport->lock); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; - return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0; + return 0; } /* @@ -1150,10 +1150,6 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, case TIOCMIWAIT: ret = uart_wait_modem_status(state, arg); break; - - case TIOCGICOUNT: - ret = uart_get_count(state, uarg); - break; } if (ret != -ENOIOCTLCMD) @@ -2065,7 +2061,19 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport) /* * Re-enable the console device after suspending. */ - if (uart_console(uport)) { + if (console_suspend_enabled && uart_console(uport)) { + /* + * First try to use the console cflag setting. + */ + memset(&termios, 0, sizeof(struct ktermios)); + termios.c_cflag = uport->cons->cflag; + + /* + * If that's unset, use the tty termios setting. + */ + if (port->tty && port->tty->termios && termios.c_cflag == 0) + termios = *(port->tty->termios); + uart_change_pm(state, 0); uport->ops->set_termios(uport, &termios, NULL); console_start(uport->cons); @@ -2283,6 +2291,7 @@ static const struct tty_operations uart_ops = { #endif .tiocmget = uart_tiocmget, .tiocmset = uart_tiocmset, + .get_icount = uart_get_icount, #ifdef CONFIG_CONSOLE_POLL .poll_init = uart_poll_init, .poll_get_char = uart_poll_get_char, diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c index 9b03d7b3e456..c4bf54bb3fc7 100644 --- a/drivers/serial/uartlite.c +++ b/drivers/serial/uartlite.c @@ -322,6 +322,26 @@ static int ulite_verify_port(struct uart_port *port, struct serial_struct *ser) return -EINVAL; } +#ifdef CONFIG_CONSOLE_POLL +static int ulite_get_poll_char(struct uart_port *port) +{ + if (!(ioread32be(port->membase + ULITE_STATUS) + & ULITE_STATUS_RXVALID)) + return NO_POLL_CHAR; + + return ioread32be(port->membase + ULITE_RX); +} + +static void ulite_put_poll_char(struct uart_port *port, unsigned char ch) +{ + while (ioread32be(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL) + cpu_relax(); + + /* write char to device */ + iowrite32be(ch, port->membase + ULITE_TX); +} +#endif + static struct uart_ops ulite_ops = { .tx_empty = ulite_tx_empty, .set_mctrl = ulite_set_mctrl, @@ -338,7 +358,11 @@ static struct uart_ops ulite_ops = { .release_port = ulite_release_port, .request_port = ulite_request_port, .config_port = ulite_config_port, - .verify_port = ulite_verify_port + .verify_port = ulite_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = ulite_get_poll_char, + .poll_put_char = ulite_put_poll_char, +#endif }; /* --------------------------------------------------------------------- diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 4e41a2a39422..8f1d4fb19d24 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -411,6 +411,26 @@ err_out: return result; } +static int ark3116_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct ark3116_private *priv = usb_get_serial_port_data(port); + struct async_icount cnow = priv->icount; + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + return 0; +} + static int ark3116_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { @@ -460,25 +480,6 @@ static int ark3116_ioctl(struct tty_struct *tty, struct file *file, return 0; } break; - case TIOCGICOUNT: { - struct serial_icounter_struct icount; - struct async_icount cnow = priv->icount; - memset(&icount, 0, sizeof(icount)); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - if (copy_to_user(user_arg, &icount, sizeof(icount))) - return -EFAULT; - return 0; - } } return -ENOIOCTLCMD; @@ -736,6 +737,7 @@ static struct usb_serial_driver ark3116_device = { .ioctl = ark3116_ioctl, .tiocmget = ark3116_tiocmget, .tiocmset = ark3116_tiocmset, + .get_icount = ark3116_get_icount, .open = ark3116_open, .close = ark3116_close, .break_ctl = ark3116_break_ctl, diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 97cc87d654ce..891c20e3bb38 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2168,6 +2168,7 @@ static int ftdi_ioctl(struct tty_struct *tty, struct file *file, * - mask passed in arg for lines of interest * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) * Caller should use TIOCGICOUNT to see which one it was. + * (except that the driver doesn't support it !) * * This code is borrowed from linux/drivers/char/serial.c */ diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 76e6fb3aab7a..a0ab78ada25e 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -222,6 +222,8 @@ static void edge_break(struct tty_struct *tty, int break_state); static int edge_tiocmget(struct tty_struct *tty, struct file *file); static int edge_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); +static int edge_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount); static int edge_startup(struct usb_serial *serial); static void edge_disconnect(struct usb_serial *serial); static void edge_release(struct usb_serial *serial); @@ -1624,6 +1626,31 @@ static int edge_tiocmget(struct tty_struct *tty, struct file *file) return result; } +static int edge_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct edgeport_port *edge_port = usb_get_serial_port_data(port); + struct async_icount cnow; + cnow = edge_port->icount; + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", + __func__, port->number, icount->rx, icount->tx); + return 0; +} + static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo) { @@ -1650,7 +1677,6 @@ static int get_serial_info(struct edgeport_port *edge_port, } - /***************************************************************************** * SerialIoctl * this function handles any ioctl calls to the driver @@ -1663,7 +1689,6 @@ static int edge_ioctl(struct tty_struct *tty, struct file *file, struct edgeport_port *edge_port = usb_get_serial_port_data(port); struct async_icount cnow; struct async_icount cprev; - struct serial_icounter_struct icount; dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); @@ -1702,26 +1727,6 @@ static int edge_ioctl(struct tty_struct *tty, struct file *file, /* NOTREACHED */ break; - case TIOCGICOUNT: - cnow = edge_port->icount; - memset(&icount, 0, sizeof(icount)); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - - dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", - __func__, port->number, icount.rx, icount.tx); - if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) - return -EFAULT; - return 0; } return -ENOIOCTLCMD; } diff --git a/drivers/usb/serial/io_tables.h b/drivers/usb/serial/io_tables.h index feb56a4ca799..6ab2a3f97fe8 100644 --- a/drivers/usb/serial/io_tables.h +++ b/drivers/usb/serial/io_tables.h @@ -123,6 +123,7 @@ static struct usb_serial_driver edgeport_2port_device = { .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, + .get_icount = edge_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, @@ -152,6 +153,7 @@ static struct usb_serial_driver edgeport_4port_device = { .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, + .get_icount = edge_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, @@ -181,6 +183,7 @@ static struct usb_serial_driver edgeport_8port_device = { .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, + .get_icount = edge_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, @@ -209,6 +212,7 @@ static struct usb_serial_driver epic_device = { .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, + .get_icount = edge_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index a7cfc5952937..4dad27a0f22a 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2510,6 +2510,27 @@ static int edge_tiocmget(struct tty_struct *tty, struct file *file) return result; } +static int edge_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct edgeport_port *edge_port = usb_get_serial_port_data(port); + struct async_icount *ic = &edge_port->icount; + + icount->cts = ic->cts; + icount->dsr = ic->dsr; + icount->rng = ic->rng; + icount->dcd = ic->dcd; + icount->tx = ic->tx; + icount->rx = ic->rx; + icount->frame = ic->frame; + icount->parity = ic->parity; + icount->overrun = ic->overrun; + icount->brk = ic->brk; + icount->buf_overrun = ic->buf_overrun; + return 0; +} + static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo) { @@ -2572,13 +2593,6 @@ static int edge_ioctl(struct tty_struct *tty, struct file *file, } /* not reached */ break; - case TIOCGICOUNT: - dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, - port->number, edge_port->icount.rx, edge_port->icount.tx); - if (copy_to_user((void __user *)arg, &edge_port->icount, - sizeof(edge_port->icount))) - return -EFAULT; - return 0; } return -ENOIOCTLCMD; } @@ -2758,6 +2772,7 @@ static struct usb_serial_driver edgeport_1port_device = { .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, + .get_icount = edge_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index aa665817a272..fd0b6414f459 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1896,10 +1896,37 @@ static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, return 0; } +static int mos7720_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7720_port; + struct async_icount cnow; + + mos7720_port = usb_get_serial_port_data(port); + cnow = mos7720_port->icount; + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, + port->number, icount->rx, icount->tx); + return 0; +} + static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, unsigned int __user *value) { - unsigned int mcr ; + unsigned int mcr; unsigned int arg; struct usb_serial_port *port; @@ -1973,7 +2000,6 @@ static int mos7720_ioctl(struct tty_struct *tty, struct file *file, struct moschip_port *mos7720_port; struct async_icount cnow; struct async_icount cprev; - struct serial_icounter_struct icount; mos7720_port = usb_get_serial_port_data(port); if (mos7720_port == NULL) @@ -2021,29 +2047,6 @@ static int mos7720_ioctl(struct tty_struct *tty, struct file *file, } /* NOTREACHED */ break; - - case TIOCGICOUNT: - cnow = mos7720_port->icount; - - memset(&icount, 0, sizeof(struct serial_icounter_struct)); - - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - - dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, - port->number, icount.rx, icount.tx); - if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) - return -EFAULT; - return 0; } return -ENOIOCTLCMD; @@ -2212,6 +2215,7 @@ static struct usb_serial_driver moschip7720_2port_driver = { .ioctl = mos7720_ioctl, .tiocmget = mos7720_tiocmget, .tiocmset = mos7720_tiocmset, + .get_icount = mos7720_get_icount, .set_termios = mos7720_set_termios, .write = mos7720_write, .write_room = mos7720_write_room, diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 1a42bc213799..93dad5853cd5 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -2209,6 +2209,34 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port, return 0; } +static int mos7840_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port; + struct async_icount cnow; + + mos7840_port = mos7840_get_port_private(port); + cnow = mos7840_port->icount; + + smp_rmb(); + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, + port->number, icount->rx, icount->tx); + return 0; +} + /***************************************************************************** * SerialIoctl * this function handles any ioctl calls to the driver @@ -2223,7 +2251,6 @@ static int mos7840_ioctl(struct tty_struct *tty, struct file *file, struct async_icount cnow; struct async_icount cprev; - struct serial_icounter_struct icount; if (mos7840_port_paranoia_check(port, __func__)) { dbg("%s", "Invalid port"); @@ -2282,29 +2309,6 @@ static int mos7840_ioctl(struct tty_struct *tty, struct file *file, /* NOTREACHED */ break; - case TIOCGICOUNT: - cnow = mos7840_port->icount; - smp_rmb(); - - memset(&icount, 0, sizeof(struct serial_icounter_struct)); - - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - - dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, - port->number, icount.rx, icount.tx); - if (copy_to_user(argp, &icount, sizeof(icount))) - return -EFAULT; - return 0; default: break; } @@ -2674,6 +2678,7 @@ static struct usb_serial_driver moschip7840_4port_device = { .break_ctl = mos7840_break, .tiocmget = mos7840_tiocmget, .tiocmset = mos7840_tiocmset, + .get_icount = mos7840_get_icount, .attach = mos7840_startup, .disconnect = mos7840_disconnect, .release = mos7840_release, diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index e986002b3844..f5312dd3331b 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -416,12 +416,34 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) return 0; } +static int ssu100_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct ssu100_port_private *priv = usb_get_serial_port_data(port); + struct async_icount cnow = priv->icount; + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + + + static int ssu100_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; - struct ssu100_port_private *priv = usb_get_serial_port_data(port); - void __user *user_arg = (void __user *)arg; dbg("%s cmd 0x%04x", __func__, cmd); @@ -433,27 +455,6 @@ static int ssu100_ioctl(struct tty_struct *tty, struct file *file, case TIOCMIWAIT: return wait_modem_info(port, arg); - case TIOCGICOUNT: - { - struct serial_icounter_struct icount; - struct async_icount cnow = priv->icount; - memset(&icount, 0, sizeof(icount)); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; - if (copy_to_user(user_arg, &icount, sizeof(icount))) - return -EFAULT; - return 0; - } - default: break; } @@ -726,6 +727,7 @@ static struct usb_serial_driver ssu100_device = { .process_read_urb = ssu100_process_read_urb, .tiocmget = ssu100_tiocmget, .tiocmset = ssu100_tiocmset, + .get_icount = ssu100_get_icount, .ioctl = ssu100_ioctl, .set_termios = ssu100_set_termios, .disconnect = usb_serial_generic_disconnect, diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 90979a1f5311..b2902f307b47 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -108,6 +108,8 @@ static void ti_throttle(struct tty_struct *tty); static void ti_unthrottle(struct tty_struct *tty); static int ti_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); +static int ti_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount); static void ti_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); static int ti_tiocmget(struct tty_struct *tty, struct file *file); @@ -237,6 +239,7 @@ static struct usb_serial_driver ti_1port_device = { .set_termios = ti_set_termios, .tiocmget = ti_tiocmget, .tiocmset = ti_tiocmset, + .get_icount = ti_get_icount, .break_ctl = ti_break, .read_int_callback = ti_interrupt_callback, .read_bulk_callback = ti_bulk_in_callback, @@ -265,6 +268,7 @@ static struct usb_serial_driver ti_2port_device = { .set_termios = ti_set_termios, .tiocmget = ti_tiocmget, .tiocmset = ti_tiocmset, + .get_icount = ti_get_icount, .break_ctl = ti_break, .read_int_callback = ti_interrupt_callback, .read_bulk_callback = ti_bulk_in_callback, @@ -788,6 +792,31 @@ static void ti_unthrottle(struct tty_struct *tty) } } +static int ti_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + struct async_icount cnow = tport->tp_icount; + + dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", + __func__, port->number, + cnow.rx, cnow.tx); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} static int ti_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) @@ -830,14 +859,6 @@ static int ti_ioctl(struct tty_struct *tty, struct file *file, cprev = cnow; } break; - case TIOCGICOUNT: - dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", - __func__, port->number, - tport->tp_icount.rx, tport->tp_icount.tx); - if (copy_to_user((void __user *)arg, &tport->tp_icount, - sizeof(tport->tp_icount))) - return -EFAULT; - return 0; } return -ENOIOCTLCMD; } diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 7a2177c79bde..e64da74bdcc5 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -519,6 +519,18 @@ static int serial_tiocmset(struct tty_struct *tty, struct file *file, return -EINVAL; } +static int serial_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + + dbg("%s - port %d", __func__, port->number); + + if (port->serial->type->get_icount) + return port->serial->type->get_icount(tty, icount); + return -EINVAL; +} + /* * We would be calling tty_wakeup here, but unfortunately some line * disciplines have an annoying habit of calling tty->write from @@ -1195,6 +1207,7 @@ static const struct tty_operations serial_ops = { .chars_in_buffer = serial_chars_in_buffer, .tiocmget = serial_tiocmget, .tiocmset = serial_tiocmset, + .get_icount = serial_get_icount, .cleanup = serial_cleanup, .install = serial_install, .proc_fops = &serial_proc_fops, diff --git a/fs/proc/proc_tty.c b/fs/proc/proc_tty.c index 83adcc869437..dc44f94022f1 100644 --- a/fs/proc/proc_tty.c +++ b/fs/proc/proc_tty.c @@ -12,7 +12,10 @@ #include <linux/proc_fs.h> #include <linux/stat.h> #include <linux/tty.h> +#include <linux/tty_driver.h> +#include <linux/console.h> #include <linux/seq_file.h> +#include <linux/fdtable.h> #include <linux/bitops.h> /* @@ -137,6 +140,160 @@ static const struct file_operations proc_tty_drivers_operations = { }; /* + * The device ID of file descriptor 0 of the current reading + * task if a character device... + */ +static dev_t current_dev; + +/* + * This is the handler for /proc/tty/consoles + */ +static int show_console_dev(struct seq_file *m, void *v) +{ + const struct tty_driver *driver; + struct console *con; + int index, len; + char flags[10]; + dev_t dev; + + if (v == SEQ_START_TOKEN) + return 0; + con = (struct console *)v; + if (!con) + return 0; + driver = con->device(con, &index); + if (!driver) + return 0; + dev = MKDEV(driver->major, driver->minor_start) + index; + + index = 0; + if (con->flags & CON_ENABLED) + flags[index++] = 'E'; + if (con->flags & CON_CONSDEV) + flags[index++] = 'C'; + if (con->flags & CON_BOOT) + flags[index++] = 'B'; + if (con->flags & CON_PRINTBUFFER) + flags[index++] = 'p'; + if (con->flags & CON_BRL) + flags[index++] = 'b'; + if (con->flags & CON_ANYTIME) + flags[index++] = 'a'; + if (current_dev == dev) + flags[index++] = '*'; + flags[index] = 0; + + seq_printf(m, "%s%d%n", con->name, con->index, &len); + len = 21 - len; + if (len < 1) + len = 1; + seq_printf(m, "%*c", len, ' '); + seq_printf(m, "%c%c%c (%s)%n", con->read ? 'R' : '-', + con->write ? 'W' : '-', con->unblank ? 'U' : '-', + flags, &len); + len = 13 - len; + if (len < 1) + len = 1; + seq_printf(m, "%*c%4d:%d\n", len, ' ', MAJOR(dev), MINOR(dev)); + + return 0; +} + +/* iterator for consoles */ +static void *c_start(struct seq_file *m, loff_t *pos) +{ + struct console *con; + loff_t off = 0; + + if (*pos == 0) + return SEQ_START_TOKEN; + + acquire_console_sem(); + for (con = console_drivers; con; con = con->next) { + if (!con->device) + continue; + if (++off == *pos) + break; + } + release_console_sem(); + + return con; +} + +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + struct console *con; + + acquire_console_sem(); + if (v == SEQ_START_TOKEN) + con = console_drivers; + else + con = ((struct console *)v)->next; + for (; con; con = con->next) { + if (!con->device) + continue; + ++*pos; + break; + } + release_console_sem(); + + return con; +} + +static void c_stop(struct seq_file *m, void *v) +{ +} + +static const struct seq_operations tty_consoles_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_console_dev +}; + +/* + * Used for open /proc/tty/consoles. Before this detect + * the device ID of file descriptor 0 of the current + * reading task if a character device... + */ +static int tty_consoles_open(struct inode *inode, struct file *file) +{ + struct files_struct *curfiles; + + current_dev = 0; + curfiles = get_files_struct(current); + if (curfiles) { + const struct file *curfp; + spin_lock(&curfiles->file_lock); + curfp = fcheck_files(curfiles, 0); + if (curfp && curfp->private_data) { + const struct inode *inode; + dget(curfp->f_dentry); + inode = curfp->f_dentry->d_inode; + if (S_ISCHR(inode->i_mode)) { + struct tty_struct *tty; + tty = (struct tty_struct *)curfp->private_data; + if (tty && tty->magic == TTY_MAGIC) { + tty = tty_pair_get_tty(tty); + current_dev = tty_devnum(tty); + } + } + dput(curfp->f_dentry); + } + spin_unlock(&curfiles->file_lock); + put_files_struct(curfiles); + } + return seq_open(file, &tty_consoles_op); +} + +static const struct file_operations proc_tty_consoles_operations = { + .open = tty_consoles_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +/* * This function is called by tty_register_driver() to handle * registering the driver's /proc handler into /proc/tty/driver/<foo> */ @@ -186,4 +343,5 @@ void __init proc_tty_init(void) proc_tty_driver = proc_mkdir_mode("tty/driver", S_IRUSR|S_IXUSR, NULL); proc_create("tty/ldiscs", 0, NULL, &tty_ldiscs_proc_fops); proc_create("tty/drivers", 0, NULL, &proc_tty_drivers_operations); + proc_create("tty/consoles", 0, NULL, &proc_tty_consoles_operations); } diff --git a/include/asm-generic/ioctls.h b/include/asm-generic/ioctls.h index 8554cb6a81b9..a3216655d657 100644 --- a/include/asm-generic/ioctls.h +++ b/include/asm-generic/ioctls.h @@ -62,7 +62,9 @@ #define TCSETSW2 _IOW('T', 0x2C, struct termios2) #define TCSETSF2 _IOW('T', 0x2D, struct termios2) #define TIOCGRS485 0x542E +#ifndef TIOCSRS485 #define TIOCSRS485 0x542F +#endif #define TIOCGPTN _IOR('T', 0x30, unsigned int) /* Get Pty Number (of pty-mux device) */ #define TIOCSPTLCK _IOW('T', 0x31, int) /* Lock/unlock Pty */ #define TCGETX 0x5432 /* SYS5 TCGETX compatibility */ diff --git a/include/linux/altera_uart.h b/include/linux/altera_uart.h index 8d441064a30d..a10a90791976 100644 --- a/include/linux/altera_uart.h +++ b/include/linux/altera_uart.h @@ -5,10 +5,15 @@ #ifndef __ALTUART_H #define __ALTUART_H +#include <linux/init.h> + struct altera_uart_platform_uart { unsigned long mapbase; /* Physical address base */ unsigned int irq; /* Interrupt vector */ unsigned int uartclk; /* UART clock rate */ + unsigned int bus_shift; /* Bus shift (address stride) */ }; +int __init early_altera_uart_setup(struct altera_uart_platform_uart *platp); + #endif /* __ALTUART_H */ diff --git a/include/linux/selection.h b/include/linux/selection.h index 8cdaa1151d2e..85193aa8c1e3 100644 --- a/include/linux/selection.h +++ b/include/linux/selection.h @@ -39,5 +39,6 @@ extern void putconsxy(struct vc_data *vc, unsigned char *p); extern u16 vcs_scr_readw(struct vc_data *vc, const u16 *org); extern void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org); +extern void vcs_scr_updated(struct vc_data *vc); #endif diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 7638deaaba65..97f5b45bbc07 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -35,6 +35,8 @@ struct plat_serial8250_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + void (*pm)(struct uart_port *, unsigned int state, + unsigned old); }; /* @@ -76,5 +78,11 @@ extern int serial8250_find_port_for_earlycon(void); extern int setup_early_serial8250_console(char *cmdline); extern void serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old); +extern void serial8250_do_pm(struct uart_port *port, unsigned int state, + unsigned int oldstate); + +extern void serial8250_set_isa_configurator(void (*v) + (int port, struct uart_port *up, + unsigned short *capabilities)); #endif diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 563e23400913..99e5994e6f84 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -289,6 +289,8 @@ struct uart_port { void (*set_termios)(struct uart_port *, struct ktermios *new, struct ktermios *old); + void (*pm)(struct uart_port *, unsigned int state, + unsigned int old); unsigned int irq; /* irq number */ unsigned long irqflags; /* irq flags */ unsigned int uartclk; /* base uart clock */ @@ -411,6 +413,14 @@ unsigned int uart_get_baud_rate(struct uart_port *port, struct ktermios *termios unsigned int max); unsigned int uart_get_divisor(struct uart_port *port, unsigned int baud); +/* Base timer interval for polling */ +static inline int uart_poll_timeout(struct uart_port *port) +{ + int timeout = port->timeout; + + return timeout > 6 ? (timeout / 2 - 2) : 1; +} + /* * Console helpers. */ diff --git a/include/linux/tty.h b/include/linux/tty.h index 67d64e6efe7a..86be0cdeb11b 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -256,6 +256,7 @@ struct tty_operations; struct tty_struct { int magic; struct kref kref; + struct device *dev; struct tty_driver *driver; const struct tty_operations *ops; int index; @@ -465,7 +466,7 @@ extern void proc_clear_tty(struct task_struct *p); extern struct tty_struct *get_current_tty(void); extern void tty_default_fops(struct file_operations *fops); extern struct tty_struct *alloc_tty_struct(void); -extern void tty_add_file(struct tty_struct *tty, struct file *file); +extern int tty_add_file(struct tty_struct *tty, struct file *file); extern void free_tty_struct(struct tty_struct *tty); extern void initialize_tty_struct(struct tty_struct *tty, struct tty_driver *driver, int idx); diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index b08677982525..db2d227694da 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -224,6 +224,12 @@ * unless the tty also has a valid tty->termiox pointer. * * Optional: Called under the termios lock + * + * int (*get_icount)(struct tty_struct *tty, struct serial_icounter *icount); + * + * Called when the device receives a TIOCGICOUNT ioctl. Passed a kernel + * structure to complete. This method is optional and will only be called + * if provided (otherwise EINVAL will be returned). */ #include <linux/fs.h> @@ -232,6 +238,7 @@ struct tty_struct; struct tty_driver; +struct serial_icounter_struct; struct tty_operations { struct tty_struct * (*lookup)(struct tty_driver *driver, @@ -268,6 +275,8 @@ struct tty_operations { unsigned int set, unsigned int clear); int (*resize)(struct tty_struct *tty, struct winsize *ws); int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew); + int (*get_icount)(struct tty_struct *tty, + struct serial_icounter_struct *icount); #ifdef CONFIG_CONSOLE_POLL int (*poll_init)(struct tty_driver *driver, int line, char *options); int (*poll_get_char)(struct tty_driver *driver, int line); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 55675b1efb28..16d682f4f7c3 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -271,6 +271,8 @@ struct usb_serial_driver { int (*tiocmget)(struct tty_struct *tty, struct file *file); int (*tiocmset)(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); + int (*get_icount)(struct tty_struct *tty, + struct serial_icounter_struct *icount); /* Called by the tty layer for port level work. There may or may not be an attached tty at this point */ void (*dtr_rts)(struct usb_serial_port *port, int on); diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index befc3a52aa04..84c2a4d013c6 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -844,10 +844,6 @@ static int rfcomm_tty_ioctl(struct tty_struct *tty, struct file *filp, unsigned BT_DBG("TIOCMIWAIT"); break; - case TIOCGICOUNT: - BT_DBG("TIOCGICOUNT"); - break; - case TIOCGSERIAL: BT_ERR("TIOCGSERIAL is not supported"); return -ENOIOCTLCMD; |