/* $NetBSD: clmpcc_pcctwo.c,v 1.20 2014/03/25 15:52:16 christos Exp $ */ /*- * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Steve C. Woodford. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Cirrus Logic CD2401 4-channel serial chip. PCCchip2 Front-end. */ #include __KERNEL_RCSID(0, "$NetBSD: clmpcc_pcctwo.c,v 1.20 2014/03/25 15:52:16 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* XXXXSCW: Fixme */ #ifdef MVME68K #include #else #error Need consiack hook #endif /* Definition of the driver for autoconfig. */ int clmpcc_pcctwo_match(device_t, cfdata_t, void *); void clmpcc_pcctwo_attach(device_t, device_t, void *); void clmpcc_pcctwo_iackhook(struct clmpcc_softc *, int); void clmpcc_pcctwo_consiackhook(struct clmpcc_softc *, int); CFATTACH_DECL_NEW(clmpcc_pcctwo, sizeof(struct clmpcc_softc), clmpcc_pcctwo_match, clmpcc_pcctwo_attach, NULL, NULL); extern struct cfdriver clmpcc_cd; extern const struct cdevsw clmpcc_cdevsw; /* * For clmpcccn*() */ cons_decl(clmpcc); /* * Is the CD2401 chip present? */ int clmpcc_pcctwo_match(device_t parent, cfdata_t cf, void *aux) { struct pcctwo_attach_args *pa; pa = aux; if (strcmp(pa->pa_name, clmpcc_cd.cd_name)) return (0); pa->pa_ipl = cf->pcctwocf_ipl; return (1); } /* * Attach a found CD2401. */ void clmpcc_pcctwo_attach(device_t parent, device_t self, void *aux) { struct clmpcc_softc *sc; struct pcctwo_attach_args *pa = aux; int level = pa->pa_ipl; sc = device_private(self); sc->sc_dev = self; level = pa->pa_ipl; sc->sc_iot = pa->pa_bust; bus_space_map(pa->pa_bust, pa->pa_offset, 0x100, 0, &sc->sc_ioh); sc->sc_clk = 20000000; sc->sc_byteswap = CLMPCC_BYTESWAP_LOW; sc->sc_swaprtsdtr = 1; sc->sc_iackhook = clmpcc_pcctwo_iackhook; sc->sc_vector_base = PCCTWO_SCC_VECBASE; sc->sc_rpilr = 0x03; sc->sc_tpilr = 0x02; sc->sc_mpilr = 0x01; sc->sc_evcnt = pcctwointr_evcnt(level); /* Do common parts of CD2401 configuration. */ clmpcc_attach(sc); /* Hook the interrupts */ pcctwointr_establish(PCCTWOV_SCC_RX, clmpcc_rxintr, level, sc, NULL); pcctwointr_establish(PCCTWOV_SCC_RX_EXCEP, clmpcc_rxintr, level, sc, NULL); pcctwointr_establish(PCCTWOV_SCC_TX, clmpcc_txintr, level, sc, NULL); pcctwointr_establish(PCCTWOV_SCC_MODEM, clmpcc_mdintr, level, sc, NULL); } void clmpcc_pcctwo_iackhook(struct clmpcc_softc *sc, int which) { bus_size_t offset; volatile u_char foo; switch (which) { case CLMPCC_IACK_MODEM: offset = PCC2REG_SCC_MODEM_PIACK; break; case CLMPCC_IACK_RX: offset = PCC2REG_SCC_RX_PIACK; break; case CLMPCC_IACK_TX: offset = PCC2REG_SCC_TX_PIACK; break; default: #ifdef DEBUG printf("%s: Invalid IACK number '%d'\n", device_xname(sc->sc_dev), which); #endif panic("clmpcc_pcctwo_iackhook %d", which); } foo = pcc2_reg_read(sys_pcctwo, offset); __USE(foo); } /* * This routine is only used prior to clmpcc_attach() being called */ void clmpcc_pcctwo_consiackhook(struct clmpcc_softc *sc, int which) { bus_space_handle_t bush; bus_size_t offset; volatile u_char foo; switch (which) { case CLMPCC_IACK_MODEM: offset = PCC2REG_SCC_MODEM_PIACK; break; case CLMPCC_IACK_RX: offset = PCC2REG_SCC_RX_PIACK; break; case CLMPCC_IACK_TX: offset = PCC2REG_SCC_TX_PIACK; break; default: #ifdef DEBUG printf("%s: Invalid IACK number '%d'\n", device_xname(sc->sc_dev), which); panic("clmpcc_pcctwo_consiackhook"); #endif panic("clmpcc_pcctwo_iackhook %d", which); } #ifdef MVME68K /* * We need to fake the tag and handle since 'sys_pcctwo' will * be NULL during early system startup... */ bush = (bus_space_handle_t) & (intiobase[MAINBUS_PCCTWO_OFFSET + PCCTWO_REG_OFF]); foo = bus_space_read_1(&_mainbus_space_tag, bush, offset); __USE(foo); #else #error Need consiack hook #endif } /**************************************************************** * Console support functions (MVME PCCchip2 specific!) ****************************************************************/ /* * Check for CD2401 console. */ void clmpcccnprobe(struct consdev *cp) { int maj; #if defined(MVME68K) if (machineid != MVME_167 && machineid != MVME_177) #elif defined(MVME88K) if (machineid != MVME_187) #endif { cp->cn_pri = CN_DEAD; return; } /* * Locate the major number */ maj = cdevsw_lookup_major(&clmpcc_cdevsw); /* Initialize required fields. */ cp->cn_dev = makedev(maj, 0); cp->cn_pri = CN_NORMAL; } void clmpcccninit(struct consdev *cp) { static struct clmpcc_softc cons_sc; cons_sc.sc_iot = &_mainbus_space_tag; bus_space_map(&_mainbus_space_tag, intiobase_phys + MAINBUS_PCCTWO_OFFSET + PCCTWO_SCC_OFF, PCC2REG_SIZE, 0, &cons_sc.sc_ioh); cons_sc.sc_clk = 20000000; cons_sc.sc_byteswap = CLMPCC_BYTESWAP_LOW; cons_sc.sc_swaprtsdtr = 1; cons_sc.sc_iackhook = clmpcc_pcctwo_consiackhook; cons_sc.sc_vector_base = PCCTWO_SCC_VECBASE; cons_sc.sc_rpilr = 0x03; cons_sc.sc_tpilr = 0x02; cons_sc.sc_mpilr = 0x01; clmpcc_cnattach(&cons_sc, 0, 9600); }