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Altera_Forum
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14 years ago

Nios II - Data cache problem

Hi all, I'm using a Cyclone III DSP Kit (DK-DSP-3C120N) and uClinux. Some days ago I realized a working design which includes a Nios II processor characterized by only an instruction cache. Wi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I tried to use ioremap_nocache() 


static int __init fpga_in_init(void)
{
# ifdef DEBUG_FUNCTION_NAME
        printk("\n%s\n",__FUNCTION__);
# endif
        int i;
        dev_t devno;
        ioremap_nocache((unsigned long)PIO_FPGA_IN_BASE,PIO_FPGA_IN_SIZE);
        if (!(request_mem_region((unsigned long)PIO_FPGA_IN_BASE, PIO_FPGA_IN_SIZE, "pio_fpga_in")))
                return -1;
        memset(&_fpga_in_dev,0,sizeof(_fpga_in_dev));
        
        ....

but it doesn't work...:(