MACE_BASE
mace = ioremap(MACE_BASE, sizeof(struct sgi_mace));
.mapbase = MACE_BASE + offset, \
#define MACE_RTC_RES_START (MACE_BASE + offsetof(struct sgi_mace, isa.rtc))
dev->base_addr = (u32)MACE_BASE;
mp->mace = MACE_BASE;
p->base = MACE_BASE + offsetof(struct sgi_mace, isa.parallel);
p->base_hi = MACE_BASE + offsetof(struct sgi_mace, isa.ecp1284);