usb/138659: uftdi driver broken in RELENG_8/CURRENT
Hans Petter Selasky
hselasky at c2i.net
Tue Sep 22 14:38:14 UTC 2009
On Tuesday 22 September 2009 14:57:46 Pierre-Luc Drouin wrote:
> Hans Petter Selasky wrote:
> > On Monday 21 September 2009 20:58:40 Pierre-Luc Drouin wrote:
> >> Hans Petter Selasky wrote:
> >>> On Monday 21 September 2009 20:28:58 Pierre-Luc Drouin wrote:
> >>>> Hans Petter Selasky wrote:
> >>>>> On Monday 21 September 2009 19:52:13 Pierre-Luc Drouin wrote:
> >>>>>> Hans Petter Selasky wrote:
> >>>>>>> On Monday 21 September 2009 19:29:10 Pierre-Luc Drouin wrote:
> >>>>>>>> Hans Petter Selasky wrote:
> >>>>>>>>> On Monday 21 September 2009 03:44:25 Pierre-Luc Drouin wrote:
> >>>>>>>>>> Hi,
> >>>>>>>>>>
> >>>>>>>>>> I am also having troubles with the uftdi driver on 8.0-BETA4.
> >>>>>>>>>> I am trying to use a fan controller (mCubed bigNG) that uses a
> >>>>>>>>>> FT232BL chip and it does not seem to be responding on FreeBSD
> >>>>>>>>>> 8.0 while the same code works perfectly on Linux (I have not
> >>>>>>>>>> tried the code on RELENG_7 yet but I could install it if
> >>>>>>>>>> necessary).
> >>>>>>>>>>
> >>>>>>>>>> Here is the very simple code I am using for testing:
> >>>>>>>>>> #include <termios.h>
> >>>>>>>>>> #include <fcntl.h>
> >>>>>>>>>> #include <string.h>
> >>>>>>>>>> #include <unistd.h>
> >>>>>>>>>> #include <stdio.h>
> >>>>>>>>>>
> >>>>>>>>>> int main();
> >>>>>>>>>>
> >>>>>>>>>> #define DEV "/dev/ttyU0"
> >>>>>>>>>>
> >>>>>>>>>> #define TBAN_SER_SOURCE1 0x05 /* Primary source */
> >>>>>>>>>> #define TBAN_SER_SOURCE2 0x06 /* Alternative source
> >>>>>>>>>> (miniNG...) */
> >>>>>>>>>>
> >>>>>>>>>> #define TBAN_SER_REQUEST 0x36
> >>>>>>>>>>
> >>>>>>>>>> int main()
> >>>>>>>>>> {
> >>>>>>>>>> int fd;
> >>>>>>>>>> int result;
> >>>>>>>>>> struct termios oldtio, newtio;
> >>>>>>>>>> unsigned char buf[285];
> >>>>>>>>>>
> >>>>>>>>>> printf("Opening device\n");
> >>>>>>>>>> fd=open(DEV, O_RDWR | O_NOCTTY);
> >>>>>>>>>>
> >>>>>>>>>> if(fd<0) {
> >>>>>>>>>> perror(DEV);
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> result=tcgetattr(fd,&oldtio);
> >>>>>>>>>> if(result<0) {
> >>>>>>>>>> perror("tcgetattr");
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> memcpy(&newtio,&oldtio,sizeof(struct termios));
> >>>>>>>>>> newtio.c_cflag = B19200
> >>>>>>>>>>
> >>>>>>>>>> | CRTSCTS
> >>>>>>>>>> | CS8
> >>>>>>>>>> | CREAD;
> >>>>>>>>>>
> >>>>>>>>>> newtio.c_iflag = IGNPAR;
> >>>>>>>>>> newtio.c_oflag = 0;
> >>>>>>>>>> newtio.c_lflag = 0;
> >>>>>>>>>> newtio.c_cc[VMIN] = 1;
> >>>>>>>>>> newtio.c_cc[VTIME] = 0;
> >>>>>>>>>>
> >>>>>>>>>> result=tcflush(fd, TCIFLUSH);
> >>>>>>>>>> if(result<0) {
> >>>>>>>>>> perror("tcflush");
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> result=tcsetattr(fd,TCSANOW,&newtio);
> >>>>>>>>>> if(result<0) {
> >>>>>>>>>> perror("tcsetattr");
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> sleep(1);
> >>>>>>>>>>
> >>>>>>>>>> printf("Performing initial query\n");
> >>>>>>>>>> buf[0]=TBAN_SER_SOURCE1;
> >>>>>>>>>> buf[1]=TBAN_SER_REQUEST;
> >>>>>>>>>>
> >>>>>>>>>> printf("Requesting status\n");
> >>>>>>>>>> result=write(fd,buf,2);
> >>>>>>>>>> if(result<0) {
> >>>>>>>>>> perror("write");
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> sleep(1);
> >>>>>>>>>>
> >>>>>>>>>> printf("Reading status\n");
> >>>>>>>>>> result=read(fd,buf,32);
> >>>>>>>>>> if(result<0) {
> >>>>>>>>>> perror("read");
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> result=tcsetattr(fd,TCSANOW,&oldtio);
> >>>>>>>>>> if(result<0) {
> >>>>>>>>>> perror("tcsetattr");
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> result=close(fd);
> >>>>>>>>>> if(result<0) {
> >>>>>>>>>> perror("close");
> >>>>>>>>>> return 1;
> >>>>>>>>>> }
> >>>>>>>>>> return 0;
> >>>>>>>>>> }
> >>>>>>>>>>
> >>>>>>>>>> It hangs while reading independently of the number of bits I am
> >>>>>>>>>> reading.
> >>>>>>>>>>
> >>>>>>>>>> Here is the output from dmesg when I load the uftdi module:
> >>>>>>>>>> Sep 20 21:31:31 ldaemon kernel: uftdi0: <USB - Serial> on usbus6
> >>>>>>>>>> Sep 20 21:31:31 ldaemon kernel: ucom_attach_tty:317: tp =
> >>>>>>>>>> 0xffffff001f12b400, unit = 0 Sep 20 21:31:31 ldaemon kernel:
> >>>>>>>>>> ucom_attach_tty:346: ttycreate: U0 Sep 20 21:31:34 ldaemon root:
> >>>>>>>>>> Unknown USB device: vendor 0x051d product 0x0002 bus uhub0
> >>>>>>>>>>
> >>>>>>>>>> Here is the output in /var/log/messages when I enable the debug
> >>>>>>>>>> output for ucom and uftdi: Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_open:554: tp = 0xffffff001f12b400 Sep 20 21:33:30 ldaemon
> >>>>>>>>>> kernel: ucom_dtr:827: onoff = 1 Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_line_state:799: on=0x01, off=0x00 Sep 20 21:33:30 ldaemon
> >>>>>>>>>> kernel: ucom_rts:838: onoff = 1
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: ucom_line_state:799: on=0x02,
> >>>>>>>>>> off=0x00 Sep 20 21:33:30 ldaemon kernel: ucom_break:816: onoff =
> >>>>>>>>>> 0 Sep 20 21:33:30 ldaemon kernel: ucom_line_state:799: on=0x00,
> >>>>>>>>>> off=0x04 Sep 20 21:33:30 ldaemon kernel: ucom_status_change:901:
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: ucom_param:950: sc =
> >>>>>>>>>> 0xffffff001f12ac58 Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> uftdi_pre_param:653:
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: ucom_dtr:827: onoff = 1
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: ucom_line_state:799: on=0x01,
> >>>>>>>>>> off=0x00 Sep 20 21:33:30 ldaemon kernel: ucom_rts:838: onoff = 1
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: ucom_line_state:799: on=0x02,
> >>>>>>>>>> off=0x00 Sep 20 21:33:30 ldaemon kernel: ucom_cfg_open:520:
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: uftdi_cfg_open:354:
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: uftdi_read_callback:459: status
> >>>>>>>>>> change msr=0xf0 (0x00) lsr=0x60 (0x00) Sep 20 21:33:30 ldaemon
> >>>>>>>>>> kernel: ucom_status_change:901:
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: uftdi_cfg_get_status:705:
> >>>>>>>>>> msr=0xf0 lsr=0x60 Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_cfg_status_change:887: DCD changed to 1 Sep 20 21:33:30
> >>>>>>>>>> ldaemon kernel:
> >>>>>>>>>> uftdi_cfg_param:672: Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_ioctl:653: cmd = 0x402c7413 Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_ioctl:653: cmd = 0x80047410 Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_ioctl:653: cmd = 0x802c7414 Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_param:950: sc = 0xffffff001f12ac58 Sep 20 21:33:30 ldaemon
> >>>>>>>>>> kernel:
> >>>>>>>>>> uftdi_pre_param:653:
> >>>>>>>>>> Sep 20 21:33:30 ldaemon kernel: uftdi_cfg_get_status:705:
> >>>>>>>>>> msr=0xf0 lsr=0x60 Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> uftdi_cfg_param:672: Sep 20 21:33:30 ldaemon kernel:
> >>>>>>>>>> ucom_get_data:1064: cnt=0 Sep 20 21:33:31 ldaemon kernel:
> >>>>>>>>>> ucom_ioctl:653: cmd = 0x80047410 Sep 20 21:33:32 ldaemon kernel:
> >>>>>>>>>> ucom_outwakeup:1009: sc = 0xffffff001f12ac58 Sep 20 21:33:32
> >>>>>>>>>> ldaemon kernel:
> >>>>>>>>>> ucom_get_data:1064: cnt=2
> >>>>>>>>>> Sep 20 21:33:32 ldaemon kernel: ucom_get_data:1064: cnt=0
> >>>>>>>>>>
> >>>>>>>>>> I really need to get this working so I am ready to test things
> >>>>>>>>>> as much as I can...
> >>>>>>>>>
> >>>>>>>>> Hi,
> >>>>>>>>>
> >>>>>>>>> You need to set raw mode for the TTY device I think. Maybe Ed can
> >>>>>>>>> give you the function name you need to call to do that?
> >>>>>>>>>
> >>>>>>>>> --HPS
> >>>>>>>>
> >>>>>>>> Do I need to do something like that?
> >>>>>>>> ioctl(fileno(stdin), TIOCGETP, &tty_org);
> >>>>>>>> tty = tty_org;
> >>>>>>>>
> >>>>>>>> /* set terminal to raw mode ... */
> >>>>>>>> tty.sg_flags |= CRMOD;
> >>>>>>>> tty.sg_flags &= ~ECHO;
> >>>>>>>> tty.sg_flags &= ~XTABS;
> >>>>>>>> tty.sg_flags |= RAW;
> >>>>>>>>
> >>>>>>>> Thanks!
> >>>>>>>> Pierre-Luc Drouin
> >>>>>>>
> >>>>>>> Hi,
> >>>>>>>
> >>>>>>> You need to call this function:
> >>>>>>>
> >>>>>>> void
> >>>>>>> cfmakeraw(struct termios *t);
> >>>>>>>
> >>>>>>> --HPS
> >>>>>>
> >>>>>> Hi,
> >>>>>>
> >>>>>> it still does not work. I have added the line
> >>>>>> cfmakeraw(&newtio);
> >>>>>>
> >>>>>> just before the call to tcflush and I get the following output in
> >>>>>> /var/log/messages:
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_open:554: tp =
> >>>>>> 0xffffff001f12b400 Sep 21 13:38:46 ldaemon kernel: ucom_dtr:827:
> >>>>>> onoff = 1
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_line_state:799: on=0x01,
> >>>>>> off=0x00 Sep 21 13:38:46 ldaemon kernel: ucom_rts:838: onoff = 1
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_line_state:799: on=0x02,
> >>>>>> off=0x00 Sep 21 13:38:46 ldaemon kernel: ucom_break:816: onoff = 0
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_line_state:799: on=0x00,
> >>>>>> off=0x04 Sep 21 13:38:46 ldaemon kernel: ucom_status_change:901:
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_param:950: sc =
> >>>>>> 0xffffff001f12ac58 Sep 21 13:38:46 ldaemon kernel:
> >>>>>> uftdi_pre_param:653:
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_dtr:827: onoff = 1
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_line_state:799: on=0x01,
> >>>>>> off=0x00 Sep 21 13:38:46 ldaemon kernel: ucom_rts:838: onoff = 1
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_line_state:799: on=0x02,
> >>>>>> off=0x00 Sep 21 13:38:46 ldaemon kernel: ucom_cfg_open:520:
> >>>>>> Sep 21 13:38:46 ldaemon kernel: uftdi_cfg_open:354:
> >>>>>> uftdi_cfg_get_status:705: msr=0xf0 lsr=0x60
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_cfg_status_change:887: DCD
> >>>>>> changed to 1 Sep 21 13:38:46 ldaemon kernel: uftdi_cfg_param:672:
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_ioctl:653: cmd = 0x402c7413
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_ioctl:653: cmd = 0x80047410
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_ioctl:653: cmd = 0x802c7414
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_param:950: sc =
> >>>>>> 0xffffff001f12ac58 Sep 21 13:38:46 ldaemon kernel:
> >>>>>> uftdi_pre_param:653:
> >>>>>> Sep 21 13:38:46 ldaemon kernel: uftdi_cfg_param:672:
> >>>>>> Sep 21 13:38:46 ldaemon kernel: ucom_get_data:1064: cnt=0
> >>>>>> Sep 21 13:38:47 ldaemon kernel: ucom_ioctl:653: cmd = 0x80047410
> >>>>>> Sep 21 13:38:48 ldaemon kernel: ucom_outwakeup:1009: sc =
> >>>>>> 0xffffff001f12ac58 Sep 21 13:38:48 ldaemon kernel:
> >>>>>> ucom_get_data:1064: cnt=2
> >>>>>> Sep 21 13:38:48 ldaemon kernel: ucom_get_data:1064: cnt=0
> >>>>>
> >>>>> Can you try adding a delay after setting the baud rate?
> >>>>>
> >>>>> --HPS
> >>>>
> >>>> The code already sleeps for 1 second after I applying the baud rate
> >>>> (via tcsetattr(fd,TCSANOW,&newtio)). I am not sure to understand what
> >>>> you mean...
> >>>
> >>> Hi,
> >>>
> >>> I mean try adding some:
> >>>
> >>> usleep(1000000);
> >>>
> >>> To your code to see if that changes anything.
> >>>
> >>> Also try reading one byte instead of 32.
> >>>
> >>> Last, try adding a printout to:
> >>>
> >>> src/sys/dev/usb/serial/uftdi.c
> >>>
> >>> uftdi_read_callback()
> >>>
> >>> and printout the actlen variable.
> >>>
> >>> --HPS
> >>
> >> ok, so I added the usleep statement right after the existing sleep
> >> statement. I also tried reading a single byte. It did not make any
> >> difference... I added a print statement to print the value of actlen
> >> right after it is set via
> >> usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
> >>
> >> Here is the new output in /var/log/messages:
> >> Sep 21 14:55:28 ldaemon kernel: ucom_open:554: tp = 0xffffff0139488800
> >> Sep 21 14:55:28 ldaemon kernel: ucom_dtr:827: onoff = 1
> >> Sep 21 14:55:28 ldaemon kernel: ucom_line_state:799: on=0x01, off=0x00
> >> Sep 21 14:55:28 ldaemon kernel: ucom_rts:838: onoff = 1
> >> Sep 21 14:55:28 ldaemon kernel: ucom_line_state:799: on=0x02, off=0x00
> >> Sep 21 14:55:28 ldaemon kernel: ucom_break:816: onoff = 0
> >> Sep 21 14:55:28 ldaemon kernel: ucom_line_state:799: on=0x00, off=0x04
> >> Sep 21 14:55:28 ldaemon kernel: ucom_status_change:901:
> >> Sep 21 14:55:28 ldaemon kernel: ucom_param:950: sc = 0xffffff013bcac458
> >> Sep 21 14:55:28 ldaemon kernel: ucom_dtr:827: onoff = 1
> >> Sep 21 14:55:28 ldaemon kernel: ucom_line_state:799: on=0x01, off=0x00
> >> Sep 21 14:55:28 ldaemon kernel: ucom_rts:838: onoff = 1
> >> Sep 21 14:55:28 ldaemon kernel: ucom_line_state:799: on=0x02, off=0x00
> >> Sep 21 14:55:28 ldaemon kernel: ucom_cfg_open:520:
> >> Sep 21 14:55:28 ldaemon kernel: actlen is 0
> >> Sep 21 14:55:28 ldaemon kernel: actlen is 2
> >> Sep 21 14:55:28 ldaemon kernel: actlen is 2
> >> Sep 21 14:55:28 ldaemon kernel: ucom_cfg_status_change:887: DCD changed
> >> to 1 Sep 21 14:55:28 ldaemon kernel: ucom_ioctl:653: cmd = 0x402c7413
> >> Sep 21 14:55:28 ldaemon kernel: ucom_ioctl:653: cmd = 0x80047410 Sep 21
> >> 14:55:28 ldaemon kernel: ucom_ioctl:653: cmd = 0x802c7414 Sep 21
> >> 14:55:28 ldaemon kernel: ucom_param:950: sc = 0xffffff013bcac458 Sep 21
> >> 14:55:28 ldaemon kernel: actlen is 2
> >> Sep 21 14:55:28 ldaemon last message repeated 12 times
> >> Sep 21 14:55:28 ldaemon kernel: ucom_get_data:1064: cnt=0
> >> Sep 21 14:55:28 ldaemon kernel: actlen is 2
> >> Sep 21 14:55:30 ldaemon last message repeated 111 times
> >> Sep 21 14:55:30 ldaemon kernel: ucom_ioctl:653: cmd = 0x80047410
> >> Sep 21 14:55:30 ldaemon kernel: actlen is 2
> >> Sep 21 14:55:31 ldaemon last message repeated 62 times
> >> Sep 21 14:55:31 ldaemon kernel: ucom_outwakeup:1009: sc =
> >> 0xffffff013bcac458 Sep 21 14:55:31 ldaemon kernel: ucom_get_data:1064:
> >> cnt=2
> >> Sep 21 14:55:31 ldaemon kernel: ucom_get_data:1064: cnt=0
> >> Sep 21 14:55:31 ldaemon kernel: actlen is 2
> >
> > If actlen is 2 then no modem data is transferred from the device.
> >
> > --HPS
>
> Hmm, so does it indicate a bug in uftdi? In asynchronous mode, SIGIO is
> generated but when try reading I get error EINTR...
>
> Thanks!
It indicates that your device is not sending any data.
--HPS
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