Eunil Won's Home Page

Device Driver for TTRX

20050223: Regular register and FIFO are in a separate device
          Multiple processes can access regular registers
          Only one process can open the FIFO registers
          (Multiple) FIFO registers can be read out by a single system call
          Protection against SEGV problem for the out of the ttrx address space
          cvs -d :pserver:ttrx@sorim2.korea.ac.kr:80/data/CVSroot login
          cvs -d :pserver:ttrx@sorim2.korea.ac.kr:80/data/CVSroot co ttrx 
20050121: /proc/ttrx can be accessible (similar to the output of the dump-ttrx)
20050118: device driver version of the xfer-ttrx is written

• It deals with multiple ttrx boards and reads in/writes out register values. It runs with the kernel 2.4.26 with the SMP option turned off. No dma and no interrupt options are implemented yet (do we need them?).
• Last updated source codes are tar-gziped and can be obtained from here ttrx_device.tgz.
• Snapshot of a particular version of the source codes (ttrx.c and ttrx.h)
• Usage

  % tar zxvf ttrx_device.tgz
  % cd ttrx/driver
  % su
  # make; ./load
  # logout
  % cd ../src
  # make
  % ./dump-ttrx -0
  

  will do all. From your console (or /var/log/message), you should see something like

  (ttrx) init_module 
  (ttrx) --> devfn:0x28 vendor:0x10b5 id:0x9054 class:0x68000 sub_venID:0x10b5 sub_devID:0x5258 base0:0xfa800000 base1:0x3001 base2:0xfa000000
  (ttrx) --> devfn:0x30 vendor:0x10b5 id:0x9054 class:0x68000 sub_venID:0x10b5 sub_devID:0x5258 base0:0xfa800400 base1:0x3401 base2:0xfb000000
  (ttrx) found 2 ttrx device(s).
  (ttrx) install succeeded. (Ver. 0.1) 
  (ttrx) ttrx_open 
  (ttrx) ttrx_read (count 1108 length 1108) 
  (ttrx) ttrx_close 
  

  and your dump-ttrx -0 should dump similar to what is shown below.

  [eunil@ttrx2 src]$ ./dump-ttrx -0
  ------------------------------------------------------------------------
  dump-ttrx version 2005011500
  ------------------------------------------------------------------------
  CPLD:
  000    ID=4 NG
  010   VER=1 (CPLD version 0.01)
  020  PRGM=b (lock*=1 m012=0 init=1 done=1)
  030  SCLK=8 (tclksel=1 clk=local edgei=0 edgeo=0)
  
  FPGA:
  080  RCLK=00001104 rdiv=4 ttrig=1 localtrg=0 trig=0 trigin=0 ext=1
  100    ID=58525454 OK
  110   VER=4000031b TTRX version 4 FPGA version 0.03 rev 27
  120  CREG=00000081 revo=Z frst=Z srst=Z lrst=Z iena=Z abrt=Z
                     entestbsy=0 enful=0 exbsy=0 bsydone=0 ready=1
                     nwff=0 testbsy=0 swbsy=0 orun=0 full=0 half=0 emp=1
  130  FREG=ff0f0000 io2/io1/ful/emp/bsy/hand/flg/mask:DCBA
  140  INTR=00000000 irq=0 encdbg=0
  200  TRIG=84000000 disg=1 decg=0 enau=0 pls=0 rnd=0 free=1 n=0
  210 TLAST=00000000 n=0
  220  RATE=120000a0 refclk=161 Hz[28:24] rndset=0[17:16] plsset=1/161[9:0]
  230   TAG=00000000
  250 DEPTH=00000000
  400   TIO=3ff9d000 in=3ff out=274 usr=000
  410 TTEST=00000075 othru=0 oincr=0 enusr=0
                     tcmd=0 tout=00 tin_de=00 tdiff=75
  420 TSTAT=52015253 Nng1=82 Nng2=1 Nngc=82 Nngany=83
  430  TSAV=50000000 ng1=0 ng2=1 x1=0 x2=1 x=0 ngc=0
                     tincr=00 tin=00 texp=00
  440 TSAV2=a101ff01 ng1=1 ng2=0 x1=1 x2=0 x=0 ngc=1
                     tincr=01 tin=ff texp=01
  450 TNG32=d297afaa count=-761811030
  ------------------------------------------------------------------------
  Summary:
      Trigger source=None  count=0 (free-run)
    Handshake READY
  ------------------------------------------------------------------------
  

• xfer-ttrx: A ttrx trigger transfer program when two ttrx boards are on the same COPPER board. The output from the device driver version is shown below:

  [eunil@ttrx2 src]$ ./xfer-ttrx
  xfer-ttrx version 2005011500
  loop=3230303 num=50 rate=323Hz count=3230304/0/0 t=10s
  loop=6585206 num=4c rate=329Hz count=6585207/0/0 t=20s
  loop=9913414 num=64 rate=330Hz count=9913415/0/0 t=30s
  loop=13260499 num=be rate=332Hz count=13260500/0/0 t=40s
  loop=16623778 num=f2 rate=332Hz count=16623779/0/0 t=50s
  loop=19989356 num=5b rate=333Hz count=19989357/0/0 t=60s
  loop=23353442 num=52 rate=334Hz count=23353443/0/0 t=70s
  loop=26719029 num=2d rate=334Hz count=26719030/0/0 t=80s
  

  where mmap based one (has to run w/ root account) gave the below result.

  root@ttrx2(112)# ./xfer-ttrx
  xfer-ttrx version 2004091000
  loop=3115359 num=50 rate=312kHz count=233443/2881917/0 t=10s
  loop=6310232 num=75 rate=316kHz count=472945/5837288/0 t=20s
  loop=9507745 num=f3 rate=317kHz count=712629/8795117/0 t=30s
  loop=12700712 num=3d rate=318kHz count=951823/11748890/0 t=40s
  loop=15898210 num=52 rate=318kHz count=1191465/14706746/0 t=50s
  loop=19095701 num=dd rate=318kHz count=1431078/17664624/0 t=60s
  loop=22293234 num=8a rate=318kHz count=1670793/20622442/0 t=70s
  loop=25490768 num=79 rate=319kHz count=1910531/23580238/0 t=80s
  loop=28688265 num=cf rate=319kHz count=2150141/26538125/0 t=90s