X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=Documentation%2Farm%2FIXP4xx;fp=Documentation%2Farm%2FIXP4xx;h=d4c6d3aa0c25e034493544d7ca734538f365b4c3;hb=64ba3f394c830ec48a1c31b53dcae312c56f1604;hp=43edb4ecf27dbdd7138ea3c969f4c45cbcd720c7;hpb=be1e6109ac94a859551f8e1774eb9a8469fe055c;p=linux-2.6.git diff --git a/Documentation/arm/IXP4xx b/Documentation/arm/IXP4xx index 43edb4ecf..d4c6d3aa0 100644 --- a/Documentation/arm/IXP4xx +++ b/Documentation/arm/IXP4xx @@ -85,7 +85,7 @@ IXP4xx provides two methods of accessing PCI memory space: 2) If > 64MB of memory space is required, the IXP4xx can be configured to use indirect registers to access PCI This allows for up to 128MB (0x48000000 to 0x4fffffff) of memory on the bus. - The disadvantage of this is that every PCI access requires + The disadvantadge of this is that every PCI access requires three local register accesses plus a spinlock, but in some cases the performance hit is acceptable. In addition, you cannot mmap() PCI devices in this case due to the indirect nature