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Arnd Bergmann a33a7d7309 [PATCH] spufs: implement mfc access for PPE-side DMA 
This patch adds a new file called 'mfc' to each spufs directory.
The file accepts DMA commands that are a subset of what would
be legal DMA commands for problem state register access. Upon
reading the file, a bitmask is returned with the completed
tag groups set.

The file is meant to be used from an abstraction in libspe
that is added by a different patch.

From the kernel perspective, this means a process can now
offload a memory copy from or into an SPE local store
without having to run code on the SPE itself.

The transfer will only be performed while the SPE is owned
by one thread that is waiting in the spu_run system call
and the data will be transferred into that thread's
address space, independent of which thread started the
transfer.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-27 14:48:26 +11:00
..
alpha [PATCH] bitops: alpha: use generic bitops 2006-03-26 08:57:11 -08:00
arm [PATCH] bitops: arm: use generic bitops 2006-03-26 08:57:12 -08:00
arm26 [PATCH] bitops: arm26: use generic bitops 2006-03-26 08:57:12 -08:00
cris [PATCH] bitops: cris: use generic bitops 2006-03-26 08:57:12 -08:00
frv [PATCH] bitops: frv: use generic bitops 2006-03-26 08:57:12 -08:00
h8300 [PATCH] bitops: h8300: use generic bitops 2006-03-26 08:57:12 -08:00
i386 [PATCH] bitops: i386: use generic bitops 2006-03-26 08:57:12 -08:00
ia64 [PATCH] bitops: ia64: make partial_page.bitmap an unsigned long 2006-03-26 08:57:15 -08:00
m32r [PATCH] bitops: m32r: use generic bitops 2006-03-26 08:57:12 -08:00
m68k [PATCH] bitops: m68k: use generic bitops 2006-03-26 08:57:12 -08:00
m68knommu [PATCH] bitops: m68knommu: use generic bitops 2006-03-26 08:57:13 -08:00
mips [PATCH] bitops: mips: use generic bitops 2006-03-26 08:57:13 -08:00
parisc [PATCH] bitops: parisc: use generic bitops 2006-03-26 08:57:14 -08:00
powerpc [PATCH] spufs: implement mfc access for PPE-side DMA 2006-03-27 14:48:26 +11:00
ppc [PATCH] ppc: fix undefined reference to hweight32 2006-03-26 08:57:13 -08:00
s390 [PATCH] bitops: s390: use generic bitops 2006-03-26 08:57:14 -08:00
sh [PATCH] bitops: sh: use generic bitops 2006-03-26 08:57:14 -08:00
sh64 [PATCH] bitops: sh64: use generic bitops 2006-03-26 08:57:14 -08:00
sparc [PATCH] bitops: sparc: use generic bitops 2006-03-26 08:57:14 -08:00
sparc64 [SPARC64]: Kill duplicate exports of string library functions. 2006-03-26 15:30:29 -08:00
um [PATCH] um: fix undefined reference to hweight32 2006-03-26 08:57:09 -08:00
v850 [PATCH] bitops: v850: use generic bitops 2006-03-26 08:57:14 -08:00
x86_64 [PATCH] bitops: x86_64: use generic bitops 2006-03-26 08:57:14 -08:00
xtensa [PATCH] bitops: xtensa: use generic bitops 2006-03-26 08:57:15 -08:00