23759dc643
Patch from Lennert Buytenhek This patch adds support for the I/O coherent cache available on the xsc3. The approach is to provide a simple API to determine whether the chipset supports coherency by calling arch_is_coherent() and then setting the appropriate system memory PTE and PMD bits. In addition, we call this API on dma_alloc_coherent() and dma_map_single() calls. A generic version exists that will compile out all the coherency-related code that is not needed on the majority of ARM systems. Note that we do not check for coherency in the dma_alloc_writecombine() function as that still requires a special PTE setting. We also don't touch dma_mmap_coherent() as that is a special ARM-only API that is by definition only used on non-coherent system. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
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| .. | ||
| apm.c | ||
| armksyms.c | ||
| arthur.c | ||
| asm-offsets.c | ||
| bios32.c | ||
| calls.S | ||
| compat.c | ||
| compat.h | ||
| debug.S | ||
| dma-isa.c | ||
| dma.c | ||
| ecard.c | ||
| entry-armv.S | ||
| entry-common.S | ||
| entry-header.S | ||
| fiq.c | ||
| head-common.S | ||
| head-nommu.S | ||
| head.S | ||
| init_task.c | ||
| io.c | ||
| irq.c | ||
| isa.c | ||
| iwmmxt.S | ||
| Makefile | ||
| module.c | ||
| process.c | ||
| ptrace.c | ||
| ptrace.h | ||
| semaphore.c | ||
| setup.c | ||
| signal.c | ||
| signal.h | ||
| smp.c | ||
| sys_arm.c | ||
| sys_oabi-compat.c | ||
| time.c | ||
| traps.c | ||
| vmlinux.lds.S | ||