| * Author: Dave Jiang <djiang@mvista.com> |
| * 2007 (c) MontaVista Software, Inc. This file is licensed under |
| * the terms of the GNU General Public License version 2. This program |
| * is licensed "as is" without any warranty of any kind, whether express |
| * ECC atomic, DMA, SMP and interrupt safe scrub function. |
| * Implements the per arch atomic_scrub() that EDAC use for software |
| * ECC scrubbing. It reads memory and then writes back the original |
| * value, allowing the hardware to detect and correct memory errors. |
| static __inline__ void atomic_scrub(void *va, u32 size) |
| unsigned int *virt_addr = va; |
| for (i = 0; i < size / sizeof(*virt_addr); i++, virt_addr++) { |
| /* Very carefully read and write to memory atomically |
| * so we are interrupt, DMA and SMP safe. |
| __asm__ __volatile__ ("\n\ |