Messages in this thread | | | From | (Alan Cox) | Subject | Re: user space writel() etc. in 2.2.2 | Date | Fri, 5 Mar 1999 17:26:25 +0000 (GMT) |
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> the IO memory space for the board. I want a portable, provided by Linux > libraries equivalent of > > ((*(volatile unsigned char *) ( base )) = ( v )) ;
So define one - the above is the portable way to do it.
> before 2.1.3 that was asm/io.h that defined writel(v,base) as such. > Then the #ifdef __KERNEL__ was put around them.
The kernel one does do what you describe. It also do a physical to virtual remapping.
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