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[POWERPC] spufs: Fix restore_decr_wrapped() to match CBE Handbook
Based on an original patch from Masato Noguchi <Masato.Noguchi@jp.sony.com>. We're currently not restoring the SPE decrementer as specified by the CBE handbook. This change fixes our implementation to match, and makes the function read more like the docs. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -1559,15 +1559,15 @@ static inline void restore_decr_wrapped(struct spu_state *csa, struct spu *spu)
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* "wrapped" flag is set, OR in a '1' to
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* CSA.SPU_Event_Status[Tm].
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*/
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if (csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED) {
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csa->spu_chnldata_RW[0] |= 0x20;
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}
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if ((csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED) &&
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(csa->spu_chnlcnt_RW[0] == 0 &&
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((csa->spu_chnldata_RW[2] & 0x20) == 0x0) &&
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((csa->spu_chnldata_RW[0] & 0x20) != 0x1))) {
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if (!(csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED))
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return;
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if ((csa->spu_chnlcnt_RW[0] == 0) &&
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(csa->spu_chnldata_RW[1] & 0x20) &&
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!(csa->spu_chnldata_RW[0] & 0x20))
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csa->spu_chnlcnt_RW[0] = 1;
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}
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csa->spu_chnldata_RW[0] |= 0x20;
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}
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static inline void restore_ch_part1(struct spu_state *csa, struct spu *spu)
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