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freebsd-skq/sys/dev/scc/scc_dev_z8530.c
cem 250e158ddf Extract eventfilter declarations to sys/_eventfilter.h 
This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header
pollution substantially.

EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c
files into appropriate headers (e.g., sys/proc.h, powernv/opal.h).

As a side effect of reduced header pollution, many .c files and headers no
longer contain needed definitions.  The remainder of the patch addresses
adding appropriate includes to fix those files.

LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by
sys/mutex.h since r326106 (but silently protected by header pollution prior
to this change).

No functional change (intended).  Of course, any out of tree modules that
relied on header pollution for sys/eventhandler.h, sys/lock.h, or
sys/mutex.h inclusion need to be fixed.  __FreeBSD_version has been bumped.
2019-05-20 00:38:23 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2004-2006 Marcel Moolenaar
* All rights reserved.
*
* 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 AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <machine/bus.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/rman.h>
#include <sys/serial.h>
#include <dev/scc/scc_bfe.h>
#include <dev/scc/scc_bus.h>
#include <dev/ic/z8530.h>
#include "scc_if.h"
static int z8530_bfe_attach(struct scc_softc *, int);
static int z8530_bfe_iclear(struct scc_softc *, struct scc_chan *);
static int z8530_bfe_ipend(struct scc_softc *);
static int z8530_bfe_probe(struct scc_softc *);
static kobj_method_t z8530_methods[] = {
KOBJMETHOD(scc_attach, z8530_bfe_attach),
KOBJMETHOD(scc_iclear, z8530_bfe_iclear),
KOBJMETHOD(scc_ipend, z8530_bfe_ipend),
KOBJMETHOD(scc_probe, z8530_bfe_probe),
KOBJMETHOD_END
};
struct scc_class scc_z8530_class = {
"z8530 class",
z8530_methods,
sizeof(struct scc_softc),
.cl_channels = 2,
.cl_class = SCC_CLASS_Z8530,
.cl_modes = SCC_MODE_ASYNC | SCC_MODE_BISYNC | SCC_MODE_HDLC,
.cl_range = CHAN_B - CHAN_A,
};
/* Multiplexed I/O. */
static __inline uint8_t
scc_getmreg(struct scc_bas *bas, int ch, int reg)
{
scc_setreg(bas, ch + REG_CTRL, reg);
scc_barrier(bas);
return (scc_getreg(bas, ch + REG_CTRL));
}
static int
z8530_bfe_attach(struct scc_softc *sc __unused, int reset __unused)
{
return (0);
}
static int
z8530_bfe_iclear(struct scc_softc *sc, struct scc_chan *ch)
{
struct scc_bas *bas;
int c;
bas = &sc->sc_bas;
c = (ch->ch_nr == 1) ? CHAN_A : CHAN_B;
mtx_lock_spin(&sc->sc_hwmtx);
if (ch->ch_ipend & SER_INT_TXIDLE) {
scc_setreg(bas, c + REG_CTRL, CR_RSTTXI);
scc_barrier(bas);
}
if (ch->ch_ipend & SER_INT_RXREADY) {
scc_getreg(bas, c + REG_DATA);
scc_barrier(bas);
}
if (ch->ch_ipend & (SER_INT_OVERRUN|SER_INT_BREAK))
scc_setreg(bas, c + REG_CTRL, CR_RSTERR);
mtx_unlock_spin(&sc->sc_hwmtx);
return (0);
}
#define SIGCHG(c, i, s, d) \
if (c) { \
i |= (i & s) ? s : s | d; \
} else { \
i = (i & s) ? (i & ~s) | d : i; \
}
static int
z8530_bfe_ipend(struct scc_softc *sc)
{
struct scc_bas *bas;
struct scc_chan *ch[2];
uint32_t sig;
uint8_t bes, ip, src;
bas = &sc->sc_bas;
ch[0] = &sc->sc_chan[0];
ch[1] = &sc->sc_chan[1];
ch[0]->ch_ipend = 0;
ch[1]->ch_ipend = 0;
mtx_lock_spin(&sc->sc_hwmtx);
ip = scc_getmreg(bas, CHAN_A, RR_IP);
if (ip & IP_RIA)
ch[0]->ch_ipend |= SER_INT_RXREADY;
if (ip & IP_RIB)
ch[1]->ch_ipend |= SER_INT_RXREADY;
if (ip & IP_TIA)
ch[0]->ch_ipend |= SER_INT_TXIDLE;
if (ip & IP_TIB)
ch[1]->ch_ipend |= SER_INT_TXIDLE;
if (ip & IP_SIA) {
bes = scc_getmreg(bas, CHAN_A, CR_RSTXSI);
if (bes & BES_BRK)
ch[0]->ch_ipend |= SER_INT_BREAK;
sig = ch[0]->ch_hwsig;
SIGCHG(bes & BES_CTS, sig, SER_CTS, SER_DCTS);
SIGCHG(bes & BES_DCD, sig, SER_DCD, SER_DDCD);
SIGCHG(bes & BES_SYNC, sig, SER_DSR, SER_DDSR);
if (sig & SER_MASK_DELTA) {
ch[0]->ch_hwsig = sig;
ch[0]->ch_ipend |= SER_INT_SIGCHG;
}
src = scc_getmreg(bas, CHAN_A, RR_SRC);
if (src & SRC_OVR)
ch[0]->ch_ipend |= SER_INT_OVERRUN;
}
if (ip & IP_SIB) {
bes = scc_getmreg(bas, CHAN_B, CR_RSTXSI);
if (bes & BES_BRK)
ch[1]->ch_ipend |= SER_INT_BREAK;
sig = ch[1]->ch_hwsig;
SIGCHG(bes & BES_CTS, sig, SER_CTS, SER_DCTS);
SIGCHG(bes & BES_DCD, sig, SER_DCD, SER_DDCD);
SIGCHG(bes & BES_SYNC, sig, SER_DSR, SER_DDSR);
if (sig & SER_MASK_DELTA) {
ch[1]->ch_hwsig = sig;
ch[1]->ch_ipend |= SER_INT_SIGCHG;
}
src = scc_getmreg(bas, CHAN_B, RR_SRC);
if (src & SRC_OVR)
ch[1]->ch_ipend |= SER_INT_OVERRUN;
}
mtx_unlock_spin(&sc->sc_hwmtx);
return (ch[0]->ch_ipend | ch[1]->ch_ipend);
}
static int
z8530_bfe_probe(struct scc_softc *sc __unused)
{
return (0);
}
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