>From 635d33cf6c6758fb2063aa2adc03b69ce0d2799a Mon Sep 17 00:00:00 2001 From: Ramesh Gupta G <grgupta@xxxxxx> Date: Fri, 15 Jun 2012 16:45:41 +0530 Subject: [PATCH v2 3/4] ARM: add flush_mem api for ARMv7 Added flush_mem cache maintenance api for ARMv7. The implementation is based on dma_flush_range. Signed-off-by: Ramesh Gupta G <grgupta@xxxxxx> --- arch/arm/mm/cache-v7.S | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-) diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index a655d3d..2e041c8 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -322,6 +322,27 @@ ENTRY(v7_dma_flush_range) dsb mov pc, lr ENDPROC(v7_dma_flush_range) +/* + * v7_flush_mem(start,end) + * - start - virtual start address of region + * - end - virtual end address of region + */ +ENTRY(v7_flush_mem) + dcache_line_size r2, r3 + sub r3, r2, #1 + bic r0, r0, r3 +#ifdef CONFIG_ARM_ERRATA_764369 + ALT_SMP(W(dsb)) + ALT_UP(W(nop)) +#endif +1: + mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D / U line + add r0, r0, r2 + cmp r0, r1 + blo 1b + dsb + mov pc, lr +ENDPROC(v7_flush_mem) /* * dma_map_area(start, size, dir) -- 1.7.0.4 -- regards Ramesh Gupta G -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
