MacIO frontend for the zs driver.
Many thanks to jake for doing the initial driver and for helping me in making this work.
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benno
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296
sys/dev/zs/zs_macio.c
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296
sys/dev/zs/zs_macio.c
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@ -0,0 +1,296 @@
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/*-
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* Copyright (c) 2003 Jake Burkholder, Benno Rice.
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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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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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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/interrupt.h>
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#include <sys/kernel.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <ofw/openfirm.h>
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#include <powerpc/powermac/maciovar.h>
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#include <dev/zs/z8530reg.h>
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#include <dev/zs/z8530var.h>
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#define ZS_MACIO_CHAN_A 32
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#define ZS_MACIO_CHAN_B 0
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#define ZS_MACIO_CSR 0
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#define ZS_MACIO_DATA 16
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#define ZS_MACIO_DEF_SPEED (57600)
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#define ZS_MACIO_CLOCK (9600 * 384)
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#define ZS_MACIO_CLOCK_DIV (16)
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struct zs_macio_softc {
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struct zs_softc sc_zs;
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struct resource *sc_irqres1, *sc_irqres2;
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int sc_irqrid1, sc_irqrid2;
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void *sc_ih1, *sc_ih2;
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struct resource *sc_memres;
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int sc_memrid;
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};
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static int zs_macio_attach(device_t dev);
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static int zs_macio_detach(device_t dev);
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static int zs_macio_probe(device_t dev);
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static int zstty_macio_attach(device_t dev);
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static int zstty_macio_probe(device_t dev);
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static device_method_t zs_macio_methods[] = {
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DEVMETHOD(device_probe, zs_macio_probe),
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DEVMETHOD(device_attach, zs_macio_attach),
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DEVMETHOD(device_detach, zs_macio_detach),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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{ 0, 0 }
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};
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static device_method_t zstty_macio_methods[] = {
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DEVMETHOD(device_probe, zstty_macio_probe),
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DEVMETHOD(device_attach, zstty_macio_attach),
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DEVMETHOD(device_detach, bus_generic_detach),
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{ 0, 0}
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};
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static driver_t zs_macio_driver = {
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"zs",
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zs_macio_methods,
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sizeof(struct zs_macio_softc),
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};
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static driver_t zstty_macio_driver = {
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"zstty",
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zstty_macio_methods,
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sizeof(struct zstty_softc),
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};
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static devclass_t zs_macio_devclass;
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static devclass_t zstty_macio_devclass;
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DRIVER_MODULE(zstty, zs, zstty_macio_driver, zstty_macio_devclass, 0, 0);
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DRIVER_MODULE(zs, macio, zs_macio_driver, zs_macio_devclass, 0, 0);
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static u_char zs_macio_init_reg[16] = {
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0, /* 0: CMD (reset, etc.) */
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0, /* 1: No interrupts yet. */
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0, /* IVECT */
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ZSWR3_RX_8 | ZSWR3_RX_ENABLE,
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ZSWR4_CLK_X16 | ZSWR4_ONESB,
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ZSWR5_TX_8 | ZSWR5_TX_ENABLE,
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0, /* 6: TXSYNC/SYNCLO */
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0, /* 7: RXSYNC/SYNCHI */
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0, /* 8: alias for data port */
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ZSWR9_MASTER_IE | ZSWR9_NO_VECTOR,
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0, /*10: Misc. TX/RX control bits */
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ZSWR11_TXCLK_BAUD | ZSWR11_RXCLK_BAUD,
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#if 0
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((ZS_MACIO_CLOCK/32)/ZS_MACIO_DEF_SPEED)-2,
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#endif
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BPS_TO_TCONST((ZS_MACIO_CLOCK / ZS_MACIO_CLOCK_DIV), ZS_MACIO_DEF_SPEED),
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0,
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ZSWR14_BAUD_ENA,
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ZSWR15_BREAK_IE,
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};
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static int
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zs_macio_probe(device_t dev)
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{
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if (strcmp(macio_get_name(dev), "escc") != 0 ||
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device_get_unit(dev) != 0)
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return (ENXIO);
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return (zs_probe(dev));
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}
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static int
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zs_macio_attach(device_t dev)
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{
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struct zs_macio_softc *sc;
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struct macio_reg *reg;
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sc = device_get_softc(dev);
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reg = macio_get_regs(dev);
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sc->sc_memres = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->sc_memrid,
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0, ~1, 1, RF_ACTIVE);
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if (sc->sc_memres == NULL) {
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device_printf(dev, "could not allocate memory\n");
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goto error;
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}
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sc->sc_irqrid1 = 0;
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sc->sc_irqres1 = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid1,
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0, ~0, 1, RF_ACTIVE);
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if (sc->sc_irqres1 == NULL) {
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device_printf(dev, "could not allocate interrupt 1\n");
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goto error;
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}
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if (bus_setup_intr(dev, sc->sc_irqres1, INTR_TYPE_TTY | INTR_FAST,
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zs_intr, sc, &sc->sc_ih1) != 0) {
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device_printf(dev, "could not setup interrupt 1\n");
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goto error;
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}
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sc->sc_irqrid2 = 1;
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sc->sc_irqres2 = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid2,
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0, ~0, 1, RF_ACTIVE);
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if (sc->sc_irqres2 == NULL) {
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device_printf(dev, "could not allocate interrupt 2\n");
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goto error;
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}
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if (bus_setup_intr(dev, sc->sc_irqres2, INTR_TYPE_TTY | INTR_FAST,
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zs_intr, sc, &sc->sc_ih2) != 0) {
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device_printf(dev, "could not setup interrupt 2\n");
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goto error;
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}
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sc->sc_zs.sc_bt = rman_get_bustag(sc->sc_memres);
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sc->sc_zs.sc_bh = rman_get_bushandle(sc->sc_memres);
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return (zs_attach(dev));
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error:
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zs_macio_detach(dev);
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return (ENXIO);
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}
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static int
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zs_macio_detach(device_t dev)
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{
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struct zs_macio_softc *sc;
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sc = device_get_softc(dev);
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if (sc->sc_irqres2 != NULL) {
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if (sc->sc_ih2 != NULL)
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bus_teardown_intr(dev, sc->sc_irqres2, sc->sc_ih2);
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bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid2,
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sc->sc_irqres2);
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}
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if (sc->sc_irqres1 != NULL) {
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if (sc->sc_ih1 != NULL)
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bus_teardown_intr(dev, sc->sc_irqres1, sc->sc_ih1);
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bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid1,
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sc->sc_irqres1);
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}
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if (sc->sc_memres != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid,
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sc->sc_memres);
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return (0);
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}
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static int
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zstty_macio_probe(device_t dev)
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{
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if ((device_get_unit(dev) & 1) == 0)
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device_set_desc(dev, "ttya");
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else
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device_set_desc(dev, "ttyb");
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return (zstty_probe(dev));
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}
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static int
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zstty_macio_attach(device_t dev)
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{
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struct zstty_softc *sc;
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sc = device_get_softc(dev);
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sc->sc_parent = device_get_softc(device_get_parent(dev));
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sc->sc_bt = sc->sc_parent->sc_bt;
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sc->sc_brg_clk = ZS_MACIO_CLOCK / ZS_MACIO_CLOCK_DIV;
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switch (device_get_unit(dev) & 1) {
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case 0:
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bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh,
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ZS_MACIO_CHAN_A + ZS_MACIO_CSR, 1, &sc->sc_csr);
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bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh,
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ZS_MACIO_CHAN_A + ZS_MACIO_DATA, 1, &sc->sc_data);
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break;
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case 1:
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bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh,
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ZS_MACIO_CHAN_B + ZS_MACIO_CSR, 1, &sc->sc_csr);
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bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh,
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ZS_MACIO_CHAN_B + ZS_MACIO_DATA, 1, &sc->sc_data);
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break;
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}
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bcopy(zs_macio_init_reg, sc->sc_creg, 16);
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bcopy(zs_macio_init_reg, sc->sc_preg, 16);
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return (zstty_attach(dev));
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}
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void
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zstty_set_speed(struct zstty_softc *sc, int ospeed)
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{
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sc->sc_preg[12] = ospeed;
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sc->sc_preg[13] = ospeed >> 8;
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}
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int
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zstty_console(device_t dev, char *mode, int len)
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{
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device_t parent;
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phandle_t chosen, options;
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ihandle_t stdin, stdout;
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phandle_t stdinp, stdoutp;
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char input[32], output[32];
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const char *desc;
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parent = device_get_parent(dev);
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chosen = OF_finddevice("/chosen");
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options = OF_finddevice("/options");
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if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) == -1 ||
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OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1 ||
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OF_getprop(options, "input-device", input, sizeof(input)) == -1 ||
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OF_getprop(options, "output-device", output,
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sizeof(output)) == -1) {
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return (0);
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}
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stdinp = OF_parent(OF_instance_to_package(stdin));
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stdoutp = OF_parent(OF_instance_to_package(stdout));
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desc = device_get_desc(dev);
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if (macio_get_node(parent) == stdinp &&
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macio_get_node(parent) == stdoutp &&
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input[3] == desc[3] && output[3] == desc[3]) {
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if (mode != NULL)
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strlcpy(mode, "57600,8,n,1,-", len);
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return (1);
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}
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return (0);
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}
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