Re: vxworks BSP sysBusToLocalAdrs not support PCI space

[Dirk Zimoch <dirk.zimoch@psi.ch>]

If I was you I would modify the BSP to support PCI_SPACE_* in
sysBusToLocalAdrs().

You may try to ask WindRiver for an update of the BSP but I don't think
you will get much support for vxWorks 5.

However, I quickly checked vxWorks 6.7 and they still don't have PCI
support in sysBusToLocalAdrs() for mv5100.

Good luck!
Dirk

王林 wrote:
> Hi All,
> When I learn EPICS device support, I encounter a question about 
> PCI memory mapping on vxworks.
> In my vxworks5.5.1 BSP for mvme5100, there is no 
> sysPciToCpuAdrs function in sysLib.c, and the function sysBusToLocalAdrs 
> does not support PCI space, for example, the base address of universe II 
> bridge is got like this:
>  if (pciFindDevice ((PCI_ID_UNIVERSE & 0xFFFF),
>                         (PCI_ID_UNIVERSE >> 16) & 0xFFFF, 0,
>                         &pciBusNo, &pciDevNo, &pciFuncNo) != ERROR)
>         {
>         pciConfigInLong(pciBusNo, pciDevNo, pciFuncNo,
>                         PCI_CFG_BASE_ADDRESS_0,
>                          &univBaseAdrs);
>         if (univBaseAdrs & PCI_BAR_SPACE_IO)
>             {
>             univBaseAdrs = (univBaseAdrs & PCI_IOBASE_MASK) - 
> PCI_MSTR_IO_BUS
>                             + PCI_MSTR_IO_LOCAL;
>             }
>         else
>             {
>             univBaseAdrs = (univBaseAdrs & PCI_MEMBASE_MASK) - 
> PCI_MSTR_MEM_BUS
>                             + PCI_MSTR_MEM_LOCAL;
>             }
> While the BSP for mvme5500 and mvme6100 have such support,  the base 
> address of universe II bridge in mv5500  is got like this:
>     if (pciFindDevice ((PCI_ID_UNIVERSE & 0xFFFF),
>                 (PCI_ID_UNIVERSE >> 16) & 0xFFFF, 0,
>          &pciBusNo, &pciDevNo, &pciFuncNo) != ERROR)
>         {
>         pciConfigInLong(pciBusNo, pciDevNo, pciFuncNo,
>                         PCI_CFG_BASE_ADDRESS_0, &reg1);
>  
>         (void)sysBusToLocalAdrs (PCI_SPACE_MEM_PRI, (char *)reg1,
>                    &baseAddr);
>  
> So, if I use mvme5100 to access PCI or PMC devices, what should I do for 
> the memory mapping? Add or modify functions 
> like sysPciToCpuAdrs and  sysBusToLocalAdrs as in mv5500 and mv6100, or 
> calculate the address manually? Is your BSP for mvme5100 the same as 
> mine? If so, when you use mvme5100, how do you map the PCI address to 
> local CPU?
>  
> Thanks,
> Lin Wang