SBIC_REGVAL
writeb(value, host->base + SBIC_REGVAL);
return readl(host->base + SBIC_REGVAL) & 255;
#define sbic_arm_writenext(host, val) writeb((val), (host)->base + SBIC_REGVAL)
#define sbic_arm_readnext(host) readb((host)->base + SBIC_REGVAL)