Experimental Physics and
Industrial Control System

Timo Korhonen <[email protected]> · Mon, 05 Mar 2001 10:29:25 +0100

Dear Weixing,

>Dear Sir:
>
>     I have developed the TD4V card's EPICS driver successfully under the help
of Tobiyama, TD4V >card is a programmable delay module used in Timing system (
KEKB
>guys maybe familar with this card). The developing system was based on
mv162+Redhat6.2(with >EPICS).
>     The card initing code of device support is like this:
>
>if(sysBusToLocalAdrs(VME_AM_EXT_SUP_DATA,(char *)Base_IO,(char **)&p)==ERROR)
>{
>       logMsg("VmeTd4v: cannot find extended address space\n");
>       return(ERROR);
>}                                        /* The memory of 162 is correct*/
>for(cardNum=0;cardNum<td4v_num_links;cardNum++)
>{
>    if(vxMemProbe((char *)&(p->PreSet),READ,2,&probeVal[0])<OK)
>    {
>        logMsg("No TD$V with cardNum=%d\n probe=%x\n",cardNum,p);
>        cards[cardNum].card=NULL;
>    }
>    else
>    {
>        logMsg("Found TD4V with cardNum=%d\n address=%x\n",cardNum,p);
>        cards[cardNum].card=p;
>    }
>...
>
>Now I want to change the mv162 board to mv2302. using the same initing code.
and set the proper >Base_IO address under the instruction of
>.../target/config/mv2302/target.nr  This time it doesn't work at all.
>What's wrong about the memory map of 2302 ?

We at SLS are also using these TD4V cards and in the beginning I recall having a
similar
problem. Have you checked the address modifier for your A32 memory access
window?

The TD4V card responds only to supervisor access modifier codes, while the
address windows
in the BSP are set to user mode access by default. Check in mv2300.h the
following line:

#define VAL_LSI0_CTL           ( LSI0_CTL_EN     | LSI0_CTL_WP  |\
                                              LSI0_CTL_D64    | LSI0_CTL_A32 |\
                                              LSI0_CTL_DATA   | LSI0_CTL_USR |\
                                              LSI0_CTL_SINGLE | LSI0_CTL_PCI_MEM
)

If it is like this, try to change LSI0_CTL_USR to LSI0_CTL_SUP and
rebuild the kernel. Then you should be able to access the TD4V.

I hope this helps (your problem may be different, however.) Please let me know
if you
need further help.

By the way, _please_ use plain text when you mail to tech-talk. Besides that
HTML mail
can be hard to read for many of the recipients, it looks awful in the archives.

best regards,

                        Timo Korhonen

--
Timo Korhonen  PSI (Paul Scherrer Institut), SLS
               CH-5232 Villigen PSI
               tel + 41- 56 3103262  fax + 41 - 56 310 3151
e-mail:        [email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System