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authorMasato Noguchi <Masato.Noguchi@jp.sony.com>2008-02-08 15:50:41 +1100
committerPaul Mackerras <paulus@samba.org>2008-02-08 19:52:35 +1100
commit732377c5f5335e227171c76532613f45b4067f25 (patch)
treee0e40dea216d78612518de311880fca9495de71a /arch/powerpc
parenteebead5b8ff89340dc18ceec996157d0eb7d0287 (diff)
[POWERPC] spufs: Update SPU_Status[CISHP] in backing runcntl write
Currently, the kernel may fail to restart a SPE context which has stopped and been swapped out. This changes spu_backing_runcntl_write to emulate the real SPU_Status register exactly. When the SPU Run Control register is written with SPU_RunCntl[Run] set to '1', the physical SPU automatically sets SPU_Status[R] and clears SPU_Status[CISHP]. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/platforms/cell/spufs/backing_ops.c6
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 50d98a154aa..64eb15b2204 100644
--- a/arch/powerpc/platforms/cell/spufs/backing_ops.c
+++ b/arch/powerpc/platforms/cell/spufs/backing_ops.c
@@ -288,6 +288,12 @@ static void spu_backing_runcntl_write(struct spu_context *ctx, u32 val)
spin_lock(&ctx->csa.register_lock);
ctx->csa.prob.spu_runcntl_RW = val;
if (val & SPU_RUNCNTL_RUNNABLE) {
+ ctx->csa.prob.spu_status_R &=
+ ~SPU_STATUS_STOPPED_BY_STOP &
+ ~SPU_STATUS_STOPPED_BY_HALT &
+ ~SPU_STATUS_SINGLE_STEP &
+ ~SPU_STATUS_INVALID_INSTR &
+ ~SPU_STATUS_INVALID_CH;
ctx->csa.prob.spu_status_R |= SPU_STATUS_RUNNING;
} else {
ctx->csa.prob.spu_status_R &= ~SPU_STATUS_RUNNING;