Hi Ohad, From: ext Ohad Ben-Cohen <[email protected]> Subject: [PATCH 5/7] omap: iovmm: remove unused functionality Date: Thu, 18 Aug 2011 02:10:06 +0300
> Remove unused functionality from OMAP's iovmm module. > > The intention is to eventually completely replace iovmm with the > generic DMA-API, so new code that'd need this iovmm functionality > will have to extend the DMA-API instead. Maybe it's better to remove the comments explaining unnecessary functions too. Now the function comparison table doesn't make sense.... >From c42c675f62241099a10e4610640e6a60fb111f1f Mon Sep 17 00:00:00 2001 From: Hiroshi DOYU <[email protected]> Date: Thu, 18 Aug 2011 13:13:53 +0300 Subject: [PATCH 1/1] omap: iommu: remove obsolete comments Remove ones referring to non-existing functions. Signed-off-by: Hiroshi DOYU <[email protected]> --- drivers/iommu/omap-iovmm.c | 36 +----------------------------------- 1 files changed, 1 insertions(+), 35 deletions(-) diff --git a/drivers/iommu/omap-iovmm.c b/drivers/iommu/omap-iovmm.c index 81b713a..2db655c 100644 --- a/drivers/iommu/omap-iovmm.c +++ b/drivers/iommu/omap-iovmm.c @@ -1,7 +1,7 @@ /* * omap iommu: simple virtual address space management * - * Copyright (C) 2008-2009 Nokia Corporation + * Copyright (C) 2008-2009, 2011 Nokia Corporation * * Written by Hiroshi DOYU <[email protected]> * @@ -25,40 +25,6 @@ #include <plat/iopgtable.h> -/* - * A device driver needs to create address mappings between: - * - * - iommu/device address - * - physical address - * - mpu virtual address - * - * There are 4 possible patterns for them: - * - * |iova/ mapping iommu_ page - * | da pa va (d)-(p)-(v) function type - * --------------------------------------------------------------------------- - * 1 | c c c 1 - 1 - 1 _kmap() / _kunmap() s - * 2 | c c,a c 1 - 1 - 1 _kmalloc()/ _kfree() s - * 3 | c d c 1 - n - 1 _vmap() / _vunmap() s - * 4 | c d,a c 1 - n - 1 _vmalloc()/ _vfree() n* - * - * - * 'iova': device iommu virtual address - * 'da': alias of 'iova' - * 'pa': physical address - * 'va': mpu virtual address - * - * 'c': contiguous memory area - * 'd': discontiguous memory area - * 'a': anonymous memory allocation - * '()': optional feature - * - * 'n': a normal page(4KB) size is used. - * 's': multiple iommu superpage(16MB, 1MB, 64KB, 4KB) size is used. - * - * '*': not yet, but feasible. - */ - static struct kmem_cache *iovm_area_cachep; /* return total bytes of sg buffers */ -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
