scc_dev_sab82532.c revision 157351
1/*- 2 * Copyright (c) 2004-2006 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/scc/scc_dev_sab82532.c 157351 2006-04-01 04:51:56Z marcel $"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bus.h> 33#include <sys/conf.h> 34#include <machine/bus.h> 35#include <sys/rman.h> 36#include <sys/serial.h> 37 38#include <dev/scc/scc_bfe.h> 39#include <dev/scc/scc_bus.h> 40 41#include <dev/ic/sab82532.h> 42 43#include "scc_if.h" 44 45static int sab82532_bfe_attach(struct scc_softc *, int); 46static int sab82532_bfe_iclear(struct scc_softc *, struct scc_chan *); 47static int sab82532_bfe_ipend(struct scc_softc *); 48static int sab82532_bfe_probe(struct scc_softc *); 49 50static kobj_method_t sab82532_methods[] = { 51 KOBJMETHOD(scc_attach, sab82532_bfe_attach), 52 KOBJMETHOD(scc_iclear, sab82532_bfe_iclear), 53 KOBJMETHOD(scc_ipend, sab82532_bfe_ipend), 54 KOBJMETHOD(scc_probe, sab82532_bfe_probe), 55 { 0, 0 } 56}; 57 58struct scc_class scc_sab82532_class = { 59 "sab82532 class", 60 sab82532_methods, 61 sizeof(struct scc_softc), 62 .cl_channels = SAB_NCHAN, 63 .cl_class = SCC_CLASS_SAB82532, 64 .cl_modes = SCC_MODE_ASYNC | SCC_MODE_BISYNC | SCC_MODE_HDLC, 65 .cl_range = SAB_CHANLEN, 66}; 67 68static int 69sab82532_bfe_attach(struct scc_softc *sc, int reset) 70{ 71 struct scc_bas *bas; 72 73 bas = &sc->sc_bas; 74 return (0); 75} 76 77static int 78sab82532_bfe_iclear(struct scc_softc *sc, struct scc_chan *ch) 79{ 80 81 return (0); 82} 83 84static int 85sab82532_bfe_ipend(struct scc_softc *sc) 86{ 87 struct scc_bas *bas; 88 struct scc_chan *ch; 89 int ipend; 90 int c, ofs; 91 uint8_t isr0, isr1; 92 93 bas = &sc->sc_bas; 94 ipend = 0; 95 for (c = 0; c < SAB_NCHAN; c++) { 96 ch = &sc->sc_chan[c]; 97 ofs = c * SAB_CHANLEN; 98 mtx_lock_spin(&sc->sc_hwmtx); 99 isr0 = scc_getreg(bas, ofs + SAB_ISR0); 100 isr1 = scc_getreg(bas, ofs + SAB_ISR1); 101 scc_barrier(bas); 102 if (isr0 & SAB_ISR0_TIME) { 103 while (scc_getreg(bas, ofs + SAB_STAR) & SAB_STAR_CEC) 104 ; 105 scc_setreg(bas, ofs + SAB_CMDR, SAB_CMDR_RFRD); 106 scc_barrier(bas); 107 } 108 mtx_unlock_spin(&sc->sc_hwmtx); 109 110 ch->ch_ipend = 0; 111 if (isr1 & SAB_ISR1_BRKT) 112 ch->ch_ipend |= SER_INT_BREAK; 113 if (isr0 & SAB_ISR0_RFO) 114 ch->ch_ipend |= SER_INT_OVERRUN; 115 if (isr0 & (SAB_ISR0_TCD|SAB_ISR0_RPF)) 116 ch->ch_ipend |= SER_INT_RXREADY; 117 if ((isr0 & SAB_ISR0_CDSC) || (isr1 & SAB_ISR1_CSC)) 118 ch->ch_ipend |= SER_INT_SIGCHG; 119 if (isr1 & SAB_ISR1_ALLS) 120 ch->ch_ipend |= SER_INT_TXIDLE; 121 ipend |= ch->ch_ipend; 122 } 123 return (ipend); 124} 125 126static int 127sab82532_bfe_probe(struct scc_softc *sc) 128{ 129 struct scc_bas *bas; 130 131 bas = &sc->sc_bas; 132 return (0); 133} 134