tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
typo fixes: disadvantadge -> disadvantage
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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Documentation/arm/IXP4xx
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Documentation/arm/IXP4xx
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2) If > 64MB of memory space is required, the IXP4xx can be
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configured to use indirect registers to access PCI This allows
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for up to 128MB (0x48000000 to 0x4fffffff) of memory on the bus.
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The disadvantadge of this is that every PCI access requires
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The disadvantage of this is that every PCI access requires
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three local register accesses plus a spinlock, but in some
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cases the performance hit is acceptable. In addition, you cannot
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mmap() PCI devices in this case due to the indirect nature
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include/asm-arm/arch-ixp4xx/io.h
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include/asm-arm/arch-ixp4xx/io.h
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* 2) If > 64MB of memory space is required, the IXP4xx can be configured
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* to use indirect registers to access PCI (as we do below for I/O
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* transactions). This allows for up to 128MB (0x48000000 to 0x4fffffff)
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* of memory on the bus. The disadvantadge of this is that every
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* of memory on the bus. The disadvantage of this is that every
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* PCI access requires three local register accesses plus a spinlock,
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* but in some cases the performance hit is acceptable. In addition,
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* you cannot mmap() PCI devices in this case.