cb5c5e62f7
a different register shift and is fed by a different clock than we use for UltraSPARC hardware. To deal with this, the regshft and rclk fields in the class structure are removed and bus frontends now pass the right regshft and rclk to the probe function where they're put in the BAS and passed in to subordinate drivers.
134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/*-
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* Copyright (c) 2004-2006 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/serial.h>
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#include <dev/scc/scc_bfe.h>
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#include <dev/scc/scc_bus.h>
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#include <dev/ic/sab82532.h>
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#include "scc_if.h"
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static int sab82532_bfe_attach(struct scc_softc *, int);
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static int sab82532_bfe_iclear(struct scc_softc *, struct scc_chan *);
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static int sab82532_bfe_ipend(struct scc_softc *);
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static int sab82532_bfe_probe(struct scc_softc *);
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static kobj_method_t sab82532_methods[] = {
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KOBJMETHOD(scc_attach, sab82532_bfe_attach),
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KOBJMETHOD(scc_iclear, sab82532_bfe_iclear),
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KOBJMETHOD(scc_ipend, sab82532_bfe_ipend),
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KOBJMETHOD(scc_probe, sab82532_bfe_probe),
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{ 0, 0 }
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};
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struct scc_class scc_sab82532_class = {
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"sab82532 class",
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sab82532_methods,
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sizeof(struct scc_softc),
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.cl_channels = SAB_NCHAN,
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.cl_class = SCC_CLASS_SAB82532,
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.cl_modes = SCC_MODE_ASYNC | SCC_MODE_BISYNC | SCC_MODE_HDLC,
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.cl_range = SAB_CHANLEN,
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};
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static int
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sab82532_bfe_attach(struct scc_softc *sc, int reset)
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{
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struct scc_bas *bas;
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bas = &sc->sc_bas;
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return (0);
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}
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static int
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sab82532_bfe_iclear(struct scc_softc *sc, struct scc_chan *ch)
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{
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return (0);
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}
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static int
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sab82532_bfe_ipend(struct scc_softc *sc)
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{
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struct scc_bas *bas;
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struct scc_chan *ch;
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int ipend;
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int c, ofs;
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uint8_t isr0, isr1;
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bas = &sc->sc_bas;
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ipend = 0;
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for (c = 0; c < SAB_NCHAN; c++) {
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ch = &sc->sc_chan[c];
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ofs = c * SAB_CHANLEN;
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mtx_lock_spin(&sc->sc_hwmtx);
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isr0 = scc_getreg(bas, ofs + SAB_ISR0);
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isr1 = scc_getreg(bas, ofs + SAB_ISR1);
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scc_barrier(bas);
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if (isr0 & SAB_ISR0_TIME) {
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while (scc_getreg(bas, ofs + SAB_STAR) & SAB_STAR_CEC)
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;
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scc_setreg(bas, ofs + SAB_CMDR, SAB_CMDR_RFRD);
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scc_barrier(bas);
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}
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mtx_unlock_spin(&sc->sc_hwmtx);
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ch->ch_ipend = 0;
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if (isr1 & SAB_ISR1_BRKT)
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ch->ch_ipend |= SER_INT_BREAK;
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if (isr0 & SAB_ISR0_RFO)
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ch->ch_ipend |= SER_INT_OVERRUN;
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if (isr0 & (SAB_ISR0_TCD|SAB_ISR0_RPF))
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ch->ch_ipend |= SER_INT_RXREADY;
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if ((isr0 & SAB_ISR0_CDSC) || (isr1 & SAB_ISR1_CSC))
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ch->ch_ipend |= SER_INT_SIGCHG;
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if (isr1 & SAB_ISR1_ALLS)
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ch->ch_ipend |= SER_INT_TXIDLE;
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ipend |= ch->ch_ipend;
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}
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return (ipend);
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}
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static int
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sab82532_bfe_probe(struct scc_softc *sc)
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{
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struct scc_bas *bas;
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bas = &sc->sc_bas;
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return (0);
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}
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