linux-apfs

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Benjamin Herrenschmidt 910ab66b1c [POWERPC] spufs: fix MFC command queue purge

In the context save/restore code, the SPU MFC command queue purge
code has a bug:

static inline void wait_purge_complete(struct spu_state *csa, struct
				       spu *spu)
{
    struct spu_priv2 __iomem *priv2 = spu->priv2;

    /* Save, Step 28:
     *     Poll MFC_CNTL[Ps] until value '11' is
     *     read
     *      (purge complete).
     */
    POLL_WHILE_FALSE(in_be64(&priv2->mfc_control_RW)
		     & MFC_CNTL_PURGE_DMA_COMPLETE);
}

This will exit as soon as _one_ of the 2 bits that compose
MFC_CNTL_PURGE_DMA_COMPLETE is set, and one of them happens to be
"purge in progress"...  which means that we'll happily continue
restoring the MFC while it's being purged at the same time.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2006-06-28 11:59:48 +10:00

4xx

ppc: Various minor compile fixes

2005-10-11 22:08:12 +10:00

8xx

powerpc: Merge enough to start building in arch/powerpc.

2005-09-26 16:04:21 +10:00

83xx

powerpc: converted embedded platforms to use new define_machine support

2006-03-30 23:39:57 -06:00

85xx

Add 85xx CDS to arch/powerpc