HPPA_FLEX_MASK
printf(" [flex %x]\n", pdc_hpa.hpa & HPPA_FLEX_MASK);
(pdc_hpa.hpa & HPPA_FLEX_MASK) | DMA_ENABLE;
spa = pa & HPPA_FLEX_MASK;
#define HPPA_FLEX_SIZE (1 + ~HPPA_FLEX_MASK)
#define HPPA_FLEX(a) (((a) & HPPA_FLEX_MASK) >> 18)