I'm developping a HPI driver for OMAP35x comunicate to C5510a, I will use DMA in OMAP side for memory transfers .
In the user space I create an array that contains data to pass to DMA. I pass a pointer to this array for the ioctl function I create, when I try to use this pointer I receive a error from kernel the user memory space is diferent from the kernel memory space. How can I transceive the user space to kernel space (without copy data from one space to another)?