On Friday 07 September 2012, Catalin Marinas wrote: > + > +/* > + * dmac_inv_range(start,end) all of these appear to be unused now. Can you remove them? > + * Invalidate the data cache within the specified region; we will be > + * performing a DMA operation in this region and we want to purge old > + * data in the cache. > + * > + * - start - virtual start address of region > + * - end - virtual end address of region > + */ > +ENTRY(dmac_inv_range) > + dcache_line_size x2, x3 > + sub x3, x2, #1 > + bic x0, x0, x3 > + bic x1, x1, x3 > +1: dc ivac, x0 // invalidate D / U line > + add x0, x0, x2 > + cmp x0, x1 > + b.lo 1b > + dsb sy > + ret > +ENDPROC(dmac_inv_range) > + > +/* > + * dmac_clean_range(start,end) > + * - start - virtual start address of region > + * - end - virtual end address of region > + */ > +ENTRY(dmac_clean_range) > + dcache_line_size x2, x3 > + sub x3, x2, #1 > + bic x0, x0, x3 > +1: dc cvac, x0 // clean D / U line > + add x0, x0, x2 > + cmp x0, x1 > + b.lo 1b > + dsb sy > + ret > +ENDPROC(dmac_clean_range) > + > +/* > + * dmac_flush_range(start,end) > + * - start - virtual start address of region > + * - end - virtual end address of region > + */ > +ENTRY(dmac_flush_range) > + dcache_line_size x2, x3 > + sub x3, x2, #1 > + bic x0, x0, x3 > +1: dc civac, x0 // clean & invalidate D / U line > + add x0, x0, x2 > + cmp x0, x1 > + b.lo 1b > + dsb sy > + ret > +ENDPROC(dmac_flush_range) > + > +/* > + * dmac_map_area(start, size, dir) > + * - start - kernel virtual start address > + * - size - size of region > + * - dir - DMA direction > + */ > +ENTRY(dmac_map_area) > + add x1, x1, x0 > + cmp x2, #DMA_FROM_DEVICE > + b.eq dmac_inv_range > + b dmac_clean_range > +ENDPROC(dmac_map_area) > + > +/* > + * dmac_unmap_area(start, size, dir) > + * - start - kernel virtual start address > + * - size - size of region > + * - dir - DMA direction > + */ > +ENTRY(dmac_unmap_area) > + add x1, x1, x0 > + cmp x2, #DMA_TO_DEVICE > + b.ne dmac_inv_range > + ret > +ENDPROC(dmac_unmap_area) Aside from this: Acked-by: Arnd Bergmann <arnd@xxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
