Re: [rtl] Shared Memory

[Christophe Kumsta <kumsta@easynet.fr>]

Adam Meyerowitz wrote:
> 
>         ptr=(MyStruct *)__va(BASE_ADDRESS)
> 
> Is this another case where I need to use ioremap?

Yes , if you use kernel 2.2.x , you need to remap your physical free
memory.

exemple :

typedef struct
{
  int data1[56] ;
  int data2[89] ;
  char videobuffer[1024*768] ;
} TMap ;

TMap *mapping ;

mapping = (TMap *)ioremap(PHYSICAL_FREE_MEM_BASE,FREE_MEM_SIZE) ;

and then , use the virtual address pointer mapping structure ...


--
Kumsta Christophe
<kumsta@easynet.fr>
Real-Time System developper
RT-Linux/RTAI ( Use the Source Luck !)
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