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| author | Kazunori Asayama <asayama@sm.sony.co.jp> | 2007-06-29 10:58:09 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-07-03 15:24:47 +1000 |
| commit | 8d038e0433e3164e460c2daeca1ec6947a08f81a (patch) | |
| tree | 577aa1a6aedfe1a16a01352ab25b07bfcac94514 /arch/powerpc/platforms/cell/spufs/backing_ops.c | |
| parent | 933b0e35247ef0dbd1a078a0ba3705ddbbda129f (diff) | |
| download | kernel_samsung_aries-8d038e0433e3164e460c2daeca1ec6947a08f81a.zip kernel_samsung_aries-8d038e0433e3164e460c2daeca1ec6947a08f81a.tar.gz kernel_samsung_aries-8d038e0433e3164e460c2daeca1ec6947a08f81a.tar.bz2 | |
[POWERPC] spufs: Save dma_tagstatus_R in CSA
The function backing_ops->read_mfc_tagstatus() doesn't return a
correct value because the dma_tagstatus_R register isn't saved in
CSA. This fixes the problem.
Signed-off-by: Kazunori Asayama <asayama@sm.sony.co.jp>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/backing_ops.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/backing_ops.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/backing_ops.c b/arch/powerpc/platforms/cell/spufs/backing_ops.c index d32db9f..07a0e81 100644 --- a/arch/powerpc/platforms/cell/spufs/backing_ops.c +++ b/arch/powerpc/platforms/cell/spufs/backing_ops.c @@ -320,6 +320,12 @@ static int spu_backing_set_mfc_query(struct spu_context * ctx, u32 mask, /* FIXME: what are the side-effects of this? */ prob->dma_querymask_RW = mask; prob->dma_querytype_RW = mode; + /* In the current implementation, the SPU context is always + * acquired in runnable state when new bits are added to the + * mask (tagwait), so it's sufficient just to mask + * dma_tagstatus_R with the 'mask' parameter here. + */ + ctx->csa.prob.dma_tagstatus_R &= mask; out: spin_unlock(&ctx->csa.register_lock); |