Re: [ts-7000] ioremap() example

[Curtis Monroe <>]

What's your error number?
Some code to help find the error message follows:


int fd;
        uint32_t* base;
        
        fd=open("/dev/mem", O_RDWR);
        if(fd == -1)
        {
                fprintf(stderr, "mmap returned error: %s\n", strerror(errno));
        }
        assert(fd != -1);

        base = (uint32_t*)mmap(0, getpagesize(), PROT_READ|PROT_WRITE,
MAP_SHARED, fd, offset);
        if(base == MAP_FAILED)
        {
                fprintf(stderr, "mmap() returned error: %s\n", strerror(errno));
        }




On Mon, 2005-04-18 at 14:45, Scott Swanson wrote:
> 
> I am porting an x86 Linux driver to ARM Linux for the TS-7250.  The
> device is a PC/104 synchronous serial interface.
> 
> I am able to read the device registers from a user-mode application by
> opening /dev/mem and calling mmap().  I am failing when I use
> ioremap_nocache() in the loadable module code to access the ISA 8-bit
> I/O ports using the existing inb() and outb() calls.
> 
> Can someone point to a loadable module in the TS-7200 kernel source
> that correctly accesses I/O ports on the ISA (PC/104) bus?
> 
> Thanks in advance,
> 
> Scott
> 
> 
> 
> 
> 
> 
> 
> 
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