718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
184 lines
4.9 KiB
C
184 lines
4.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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/z8530.h>
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#include "scc_if.h"
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static int z8530_bfe_attach(struct scc_softc *, int);
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static int z8530_bfe_iclear(struct scc_softc *, struct scc_chan *);
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static int z8530_bfe_ipend(struct scc_softc *);
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static int z8530_bfe_probe(struct scc_softc *);
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static kobj_method_t z8530_methods[] = {
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KOBJMETHOD(scc_attach, z8530_bfe_attach),
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KOBJMETHOD(scc_iclear, z8530_bfe_iclear),
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KOBJMETHOD(scc_ipend, z8530_bfe_ipend),
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KOBJMETHOD(scc_probe, z8530_bfe_probe),
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KOBJMETHOD_END
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};
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struct scc_class scc_z8530_class = {
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"z8530 class",
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z8530_methods,
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sizeof(struct scc_softc),
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.cl_channels = 2,
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.cl_class = SCC_CLASS_Z8530,
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.cl_modes = SCC_MODE_ASYNC | SCC_MODE_BISYNC | SCC_MODE_HDLC,
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.cl_range = CHAN_B - CHAN_A,
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};
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/* Multiplexed I/O. */
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static __inline uint8_t
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scc_getmreg(struct scc_bas *bas, int ch, int reg)
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{
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scc_setreg(bas, ch + REG_CTRL, reg);
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scc_barrier(bas);
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return (scc_getreg(bas, ch + REG_CTRL));
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}
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static int
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z8530_bfe_attach(struct scc_softc *sc __unused, int reset __unused)
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{
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return (0);
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}
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static int
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z8530_bfe_iclear(struct scc_softc *sc, struct scc_chan *ch)
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{
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struct scc_bas *bas;
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int c;
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bas = &sc->sc_bas;
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c = (ch->ch_nr == 1) ? CHAN_A : CHAN_B;
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mtx_lock_spin(&sc->sc_hwmtx);
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if (ch->ch_ipend & SER_INT_TXIDLE) {
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scc_setreg(bas, c + REG_CTRL, CR_RSTTXI);
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scc_barrier(bas);
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}
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if (ch->ch_ipend & SER_INT_RXREADY) {
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scc_getreg(bas, c + REG_DATA);
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scc_barrier(bas);
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}
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if (ch->ch_ipend & (SER_INT_OVERRUN|SER_INT_BREAK))
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scc_setreg(bas, c + REG_CTRL, CR_RSTERR);
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mtx_unlock_spin(&sc->sc_hwmtx);
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return (0);
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}
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#define SIGCHG(c, i, s, d) \
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if (c) { \
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i |= (i & s) ? s : s | d; \
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} else { \
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i = (i & s) ? (i & ~s) | d : i; \
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}
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static int
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z8530_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[2];
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uint32_t sig;
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uint8_t bes, ip, src;
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bas = &sc->sc_bas;
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ch[0] = &sc->sc_chan[0];
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ch[1] = &sc->sc_chan[1];
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ch[0]->ch_ipend = 0;
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ch[1]->ch_ipend = 0;
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mtx_lock_spin(&sc->sc_hwmtx);
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ip = scc_getmreg(bas, CHAN_A, RR_IP);
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if (ip & IP_RIA)
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ch[0]->ch_ipend |= SER_INT_RXREADY;
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if (ip & IP_RIB)
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ch[1]->ch_ipend |= SER_INT_RXREADY;
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if (ip & IP_TIA)
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ch[0]->ch_ipend |= SER_INT_TXIDLE;
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if (ip & IP_TIB)
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ch[1]->ch_ipend |= SER_INT_TXIDLE;
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if (ip & IP_SIA) {
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bes = scc_getmreg(bas, CHAN_A, CR_RSTXSI);
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if (bes & BES_BRK)
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ch[0]->ch_ipend |= SER_INT_BREAK;
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sig = ch[0]->ch_hwsig;
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SIGCHG(bes & BES_CTS, sig, SER_CTS, SER_DCTS);
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SIGCHG(bes & BES_DCD, sig, SER_DCD, SER_DDCD);
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SIGCHG(bes & BES_SYNC, sig, SER_DSR, SER_DDSR);
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if (sig & SER_MASK_DELTA) {
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ch[0]->ch_hwsig = sig;
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ch[0]->ch_ipend |= SER_INT_SIGCHG;
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}
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src = scc_getmreg(bas, CHAN_A, RR_SRC);
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if (src & SRC_OVR)
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ch[0]->ch_ipend |= SER_INT_OVERRUN;
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}
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if (ip & IP_SIB) {
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bes = scc_getmreg(bas, CHAN_B, CR_RSTXSI);
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if (bes & BES_BRK)
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ch[1]->ch_ipend |= SER_INT_BREAK;
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sig = ch[1]->ch_hwsig;
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SIGCHG(bes & BES_CTS, sig, SER_CTS, SER_DCTS);
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SIGCHG(bes & BES_DCD, sig, SER_DCD, SER_DDCD);
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SIGCHG(bes & BES_SYNC, sig, SER_DSR, SER_DDSR);
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if (sig & SER_MASK_DELTA) {
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ch[1]->ch_hwsig = sig;
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ch[1]->ch_ipend |= SER_INT_SIGCHG;
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}
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src = scc_getmreg(bas, CHAN_B, RR_SRC);
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if (src & SRC_OVR)
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ch[1]->ch_ipend |= SER_INT_OVERRUN;
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}
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mtx_unlock_spin(&sc->sc_hwmtx);
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return (ch[0]->ch_ipend | ch[1]->ch_ipend);
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}
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static int
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z8530_bfe_probe(struct scc_softc *sc __unused)
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{
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return (0);
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}
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