/* $OpenBSD: rlnreg.h,v 1.2 1999/08/19 06:15:38 d Exp $ */ /* * David Leonard , 1999. Public Domain. * * RangeLAN2 registers */ /* * The RangeLAN2 cards provide four control registers for transferring * messaged between the host and the card using programmed i/o. * * A transfer protocol is followed when sending asynchronous messages to, * and receiving messages from, the card. * * DATA * 7 6 5 4 3 2 1 0 * +-------+-------+-------+-------+-------+-------+-------+-------+ * | data | * +-------+-------+-------+-------+-------+-------+-------+-------+ * * STATUS * 7 6 5 4 3 2 1 0 * +-------+-------+-------+-------+-------+-------+-------+-------+ * |WAKEUP | tx message state |CLRNAK | rx message state | * +-------+-------+-------+-------+-------+-------+-------+-------+ * * CONTROL * 7 6 5 4 3 2 1 0 * +-------+-------+-------+-------+-------+-------+-------+-------+ * | | | 16BIT | RESET | | | TXINT | RXINT | * +-------+-------+-------+-------+-------+-------+-------+-------+ * * INTSEL * 7 6 5 4 3 2 1 0 * +-------+-------+-------+-------+-------+-------+-------+-------+ * | | | |ENABLE | interrupt line | * +-------+-------+-------+-------+-------+-------+-------+-------+ */ /* Register offsets. */ #define RLN_REG_DATA 0 #define RLN_REG_STATUS 2 #define RLN_REG_CONTROL 4 #define RLN_REG_EOI 5 #define RLN_REG_INTSEL 6 #define RLN_NPORTS 8 /* * A short delay is needed (16ms?) after register writes on some cards. * XXX This is done by performing an innocent and harmless bus read. (i386) * This is what Proxim's driver does, anyway. */ #define _rln_regacc_delay() \ bus_space_read_1(I386_BUS_SPACE_IO, 0, 0x61) static void _rln_register_write_1 __P((struct rln_softc *, u_int8_t, u_int8_t)); static void _rln_register_write_2 __P((struct rln_softc *, u_int8_t, u_int16_t)); static u_int8_t _rln_register_read_1 __P((struct rln_softc *, u_int8_t)); static u_int16_t _rln_register_read_2 __P((struct rln_softc *, u_int8_t)); static int rln_status_rx_ready __P((struct rln_softc *)); /* Write to a register. */ static inline void _rln_register_write_1(sc, regoff, value) struct rln_softc *sc; u_int8_t regoff; u_int8_t value; { #ifdef RLNDEBUG_REG printf(" %c<%02x", "DDS3CEI7"[regoff], value); #endif bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, (regoff), (value)); _rln_regacc_delay(); } static inline void _rln_register_write_2(sc, regoff, value) struct rln_softc *sc; u_int8_t regoff; u_int16_t value; { #ifdef RLNDEBUG_REG printf(" %c<%04x", "DDS3CEI7"[regoff], value); #endif bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, (regoff), (value)); _rln_regacc_delay(); } /* Read from a register. */ static inline u_int8_t _rln_register_read_1(sc, regoff) struct rln_softc *sc; u_int8_t regoff; { u_int8_t ret; ret = bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, (regoff)); #ifdef RLNDEBUG_REG if (ret != (sc)->dbg_oreg[regoff]) { /* avoid spewing out too much debug info */ printf(" %c>%02x", "DDS3CEI7"[regoff], ret); (sc)->dbg_oreg[regoff] = ret; } #endif return (ret); } static inline u_int16_t _rln_register_read_2(sc, regoff) struct rln_softc *sc; u_int8_t regoff; { u_int16_t ret; ret = bus_space_read_2((sc)->sc_iot, (sc)->sc_ioh, (regoff)); #ifdef RLNDEBUG_REG if (ret != (sc)->dbg_oreg[regoff]) { printf(" %c>%04x", "DDS3CEI7"[regoff], ret); (sc)->dbg_oreg[regoff] = ret; } #endif return (ret); } /* 8-bit data register access. */ #define rln_data_write_1(sc, value) \ _rln_register_write_1(sc, RLN_REG_DATA, (value)) #define rln_data_read_1(sc) \ _rln_register_read_1(sc, RLN_REG_DATA) #define rln_data_write_multi_1(sc, buf, len) \ bus_space_write_multi_1((sc)->sc_iot, (sc)->sc_ioh, \ RLN_REG_DATA, (buf), (len)) #define rln_data_read_multi_1(sc, buf, len) \ bus_space_read_multi_1((sc)->sc_iot, (sc)->sc_ioh, \ RLN_REG_DATA, (buf), (len)) /* 16-bit data register access. */ #define rln_data_write_2(sc, value) \ _rln_register_write_2(sc, RLN_REG_DATA, (value)) #define rln_data_read_2(sc) \ _rln_register_read_2(sc, RLN_REG_DATA) #define rln_data_write_multi_2(sc, buf, len) \ bus_space_write_multi_2((sc)->sc_iot, (sc)->sc_ioh, \ RLN_REG_DATA, (buf), (len)) #define rln_data_read_multi_2(sc, buf, len) \ bus_space_read_multi_2((sc)->sc_iot, (sc)->sc_ioh, \ RLN_REG_DATA, (buf), (len)) /* Status register. */ #define RLN_STATUS_CLRNAK 0x08 #define RLN_STATUS_WAKEUP 0x80 #define RLN_STATUS_TX_IDLE 0x00 #define RLN_STATUS_TX_HILEN_AVAIL 0x01 #define RLN_STATUS_TX_HILEN_ACCEPT 0x02 #define RLN_STATUS_TX_XFR_COMPLETE 0x03 #define RLN_STATUS_TX_XFR 0x04 #define RLN_STATUS_TX_ERROR 0x05 #define RLN_STATUS_TX_LOLEN_AVAIL 0x06 #define RLN_STATUS_TX_LOLEN_ACCEPT 0x07 #define RLN_STATUS_TX_MASK 0x0f #define RLN_STATUS_RX_IDLE 0x00 #define RLN_STATUS_RX_HILEN_AVAIL 0x10 #define RLN_STATUS_RX_HILEN_ACCEPT 0x20 #define RLN_STATUS_RX_XFR_COMPLETE 0x30 #define RLN_STATUS_RX_XFR 0x40 #define RLN_STATUS_RX_ERROR 0x50 #define RLN_STATUS_RX_LOLEN_AVAIL 0x60 #define RLN_STATUS_RX_LOLEN_ACCEPT 0x70 #define RLN_STATUS_RX_MASK 0x70 #define rln_status_write(sc, value) \ _rln_register_write_1(sc, RLN_REG_STATUS, (value)) #define rln_status_set(sc, bits) \ rln_status_write(sc, (sc)->sc_status |= (bits)) #define rln_status_clear(sc, bits) \ rln_status_write(sc, (sc)->sc_status &= ~(bits)) #define _rln_status_setmask(sc, mask, bits) \ do { \ int _s; \ \ _s = splhigh(); \ (sc)->sc_status = ((sc)->sc_status & (mask)) | (bits); \ rln_status_write(sc, (sc)->sc_status); \ splx(_s); \ } while (0); #define rln_status_rx_write(sc, state) \ _rln_status_setmask((sc), ~RLN_STATUS_RX_MASK, state) #define rln_status_tx_write(sc, state) \ _rln_status_setmask((sc), ~RLN_STATUS_TX_MASK, state) #define rln_status_read(sc) \ _rln_register_read_1(sc, RLN_REG_STATUS) #define rln_status_rx_read(sc) \ (rln_status_read(sc) & ~RLN_STATUS_TX_MASK) #define rln_status_tx_read(sc) \ (rln_status_read(sc) & ~RLN_STATUS_RX_MASK) static inline int rln_status_rx_ready(sc) struct rln_softc *sc; { u_int8_t status; status = rln_status_rx_read(sc); return (status == RLN_STATUS_RX_LOLEN_AVAIL || status == RLN_STATUS_RX_HILEN_AVAIL || status == RLN_STATUS_RX_ERROR); } #define rln_status_tx_int(sc) do { \ int _s = splhigh(); \ \ rln_control_clear(sc, RLN_CONTROL_TXINT); \ rln_control_set(sc, RLN_CONTROL_TXINT); \ splx(_s); \ } while (0) #define rln_status_rx_int(sc) do { \ int _s = splhigh(); \ \ rln_control_clear(sc, RLN_CONTROL_RXINT); \ rln_control_set(sc, RLN_CONTROL_RXINT); \ splx(_s); \ } while (0) /* Control register. */ #define RLN_CONTROL_RXINT 0x01 #define RLN_CONTROL_TXINT 0x02 #define RLN_CONTROL_BIT2 0x04 #define RLN_CONTROL_BIT3 0x08 #define RLN_CONTROL_RESET 0x10 #define RLN_CONTROL_16BIT 0x20 #define RLN_CONTROL_MASK 0x3f #define rln_control_write(sc, value) \ _rln_register_write_1(sc, RLN_REG_CONTROL, \ (sc)->sc_control = (value)) #define rln_control_read(sc) \ _rln_register_read_1(sc, RLN_REG_CONTROL) #define rln_control_set(sc, bits) \ rln_control_write(sc, (sc)->sc_control | (bits)) #define rln_control_clear(sc, bits) \ rln_control_write(sc, (sc)->sc_control & ~(bits)) #define rln_control_outofstandby(sc) do { \ rln_control_write(sc, (sc)->sc_control | RLN_CONTROL_RESET);\ DELAY(30000); \ rln_control_write(sc, (sc)->sc_control); \ } while (0) /* Interrupt selection register. */ #define RLN_INTSEL_IRQMASK 0x07 #define RLN_INTSEL_ENABLE 0x10 #define RLN_INTSEL_BIT7 0x80 #define rln_intsel_disable(sc) do { \ int _s; \ \ _s = splhigh(); \ _rln_register_write_1(sc, RLN_REG_INTSEL, \ (sc)->sc_intsel &= ~RLN_INTSEL_ENABLE); \ splx(_s); \ } while (0) #define rln_intsel_enable(sc) do { \ int _s; \ \ _s = splhigh(); \ _rln_register_write_1(sc, RLN_REG_INTSEL, \ (sc)->sc_intsel |= RLN_INTSEL_ENABLE); \ splx(_s); \ } while (0) #define rln_intsel_write(sc, value) \ _rln_register_write_1(sc, RLN_REG_INTSEL, \ (sc)->sc_intsel |= (value)) /* End of interrupt signal, used on some newer cards. */ #define rln_eoi(sc) \ (void) _rln_register_read_1(sc, RLN_REG_EOI)