1 /* $NetBSD: z8530var.h,v 1.4 2008/03/29 19:15:34 tsutsui Exp $ */ 2 3 #include <dev/ic/z8530sc.h> 4 5 struct zsc_softc { 6 device_t zsc_dev; /* required first: base device */ 7 struct zs_chanstate *zsc_cs[2]; /* channel A and B soft state */ 8 /* Machine-dependent part follows... */ 9 void *zsc_softintr_cookie; 10 }; 11 12 uint8_t zs_read_reg(struct zs_chanstate *cs, uint8_t reg); 13 uint8_t zs_read_csr(struct zs_chanstate *cs); 14 uint8_t zs_read_data(struct zs_chanstate *cs); 15 16 void zs_write_reg(struct zs_chanstate *cs, uint8_t reg, uint8_t val); 17 void zs_write_csr(struct zs_chanstate *cs, uint8_t val); 18 void zs_write_data(struct zs_chanstate *cs, uint8_t val); 19 20 /* Interrupt priority for the SCC chip; needs to match ZSHARD_PRI. */ 21 #define splzs() spl4() 22 #define IPL_ZS IPL_HIGH 23 24