MSIC_FIFO_SIZE_SHIFT   48 arch/powerpc/platforms/cell/axon_msi.c #define MSIC_FIFO_SIZE_BYTES	(1 << MSIC_FIFO_SIZE_SHIFT)
MSIC_FIFO_SIZE_SHIFT   54 arch/powerpc/platforms/cell/axon_msi.c #define MSIC_CTRL_FIFO_SIZE	(((MSIC_FIFO_SIZE_SHIFT - 15) << 8) & 0x300)