Altera TSE driver and example program for lwIP (1.3.2)

Hi,

I'm using the the alt_remap_uncached() function from Nios Gen1 with minor changes:

# include "sys/alt_warning.h"

# include "sys/alt_cache.h"

# include "system.h"

volatile void*

alt_remap_uncached(void* ptr, alt_u32 len)

{

# ifdef NIOS2_MMU_PRESENT

/* Convert KERNEL region address to IO region address */

# define BYPASS_DCACHE_MASK (0x1 << 29)

# else

/* Set bit 31 of address to bypass D-cache */

# define BYPASS_DCACHE_MASK (0x1 << 31)

# endif

const size_t num_lines = (len + ALT_CPU_DCACHE_LINE_SIZE - 1) / ALT_CPU_DCACHE_LINE_SIZE;

const size_t aligned_size = num_lines * ALT_CPU_DCACHE_LINE_SIZE;

alt_dcache_flush (ptr, aligned_size);

return (void*) (((alt_u32) ptr) | BYPASS_DCACHE_MASK);

}

In my case it works. May be it helps you

Jens