usb/138659: uftdi driver broken in RELENG_8/CURRENT

Mon Sep 21 17:29:12 UTC 2009

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