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author | benno <benno@FreeBSD.org> | 2003-02-01 07:23:47 +0000 |
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committer | benno <benno@FreeBSD.org> | 2003-02-01 07:23:47 +0000 |
commit | a1dc0be46adc9dff251c18abadca54296ab1c2bc (patch) | |
tree | c5c210822f4af63b0870602f5ae1e6a5677073e3 | |
parent | ad96cd6ffb29da032bc653785d8b5d9fc53e9f02 (diff) | |
download | FreeBSD-src-a1dc0be46adc9dff251c18abadca54296ab1c2bc.zip FreeBSD-src-a1dc0be46adc9dff251c18abadca54296ab1c2bc.tar.gz |
MacIO frontend for the zs driver.
Many thanks to jake for doing the initial driver and for helping me in making
this work.
-rw-r--r-- | sys/dev/zs/zs_macio.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/sys/dev/zs/zs_macio.c b/sys/dev/zs/zs_macio.c new file mode 100644 index 0000000..367c563 --- /dev/null +++ b/sys/dev/zs/zs_macio.c @@ -0,0 +1,296 @@ +/*- + * Copyright (c) 2003 Jake Burkholder, Benno Rice. + * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + * + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/interrupt.h> +#include <sys/kernel.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <ofw/openfirm.h> +#include <powerpc/powermac/maciovar.h> + +#include <dev/zs/z8530reg.h> +#include <dev/zs/z8530var.h> + +#define ZS_MACIO_CHAN_A 32 +#define ZS_MACIO_CHAN_B 0 + +#define ZS_MACIO_CSR 0 +#define ZS_MACIO_DATA 16 + +#define ZS_MACIO_DEF_SPEED (57600) + +#define ZS_MACIO_CLOCK (9600 * 384) +#define ZS_MACIO_CLOCK_DIV (16) + +struct zs_macio_softc { + struct zs_softc sc_zs; + struct resource *sc_irqres1, *sc_irqres2; + int sc_irqrid1, sc_irqrid2; + void *sc_ih1, *sc_ih2; + struct resource *sc_memres; + int sc_memrid; +}; + +static int zs_macio_attach(device_t dev); +static int zs_macio_detach(device_t dev); +static int zs_macio_probe(device_t dev); + +static int zstty_macio_attach(device_t dev); +static int zstty_macio_probe(device_t dev); + +static device_method_t zs_macio_methods[] = { + DEVMETHOD(device_probe, zs_macio_probe), + DEVMETHOD(device_attach, zs_macio_attach), + DEVMETHOD(device_detach, zs_macio_detach), + + DEVMETHOD(bus_print_child, bus_generic_print_child), + + { 0, 0 } +}; + +static device_method_t zstty_macio_methods[] = { + DEVMETHOD(device_probe, zstty_macio_probe), + DEVMETHOD(device_attach, zstty_macio_attach), + DEVMETHOD(device_detach, bus_generic_detach), + + { 0, 0} +}; + +static driver_t zs_macio_driver = { + "zs", + zs_macio_methods, + sizeof(struct zs_macio_softc), +}; + +static driver_t zstty_macio_driver = { + "zstty", + zstty_macio_methods, + sizeof(struct zstty_softc), +}; + +static devclass_t zs_macio_devclass; +static devclass_t zstty_macio_devclass; + +DRIVER_MODULE(zstty, zs, zstty_macio_driver, zstty_macio_devclass, 0, 0); +DRIVER_MODULE(zs, macio, zs_macio_driver, zs_macio_devclass, 0, 0); + +static u_char zs_macio_init_reg[16] = { + 0, /* 0: CMD (reset, etc.) */ + 0, /* 1: No interrupts yet. */ + 0, /* IVECT */ + ZSWR3_RX_8 | ZSWR3_RX_ENABLE, + ZSWR4_CLK_X16 | ZSWR4_ONESB, + ZSWR5_TX_8 | ZSWR5_TX_ENABLE, + 0, /* 6: TXSYNC/SYNCLO */ + 0, /* 7: RXSYNC/SYNCHI */ + 0, /* 8: alias for data port */ + ZSWR9_MASTER_IE | ZSWR9_NO_VECTOR, + 0, /*10: Misc. TX/RX control bits */ + ZSWR11_TXCLK_BAUD | ZSWR11_RXCLK_BAUD, +#if 0 + ((ZS_MACIO_CLOCK/32)/ZS_MACIO_DEF_SPEED)-2, +#endif + BPS_TO_TCONST((ZS_MACIO_CLOCK / ZS_MACIO_CLOCK_DIV), ZS_MACIO_DEF_SPEED), + 0, + ZSWR14_BAUD_ENA, + ZSWR15_BREAK_IE, +}; + +static int +zs_macio_probe(device_t dev) +{ + + if (strcmp(macio_get_name(dev), "escc") != 0 || + device_get_unit(dev) != 0) + return (ENXIO); + return (zs_probe(dev)); +} + +static int +zs_macio_attach(device_t dev) +{ + struct zs_macio_softc *sc; + struct macio_reg *reg; + + sc = device_get_softc(dev); + reg = macio_get_regs(dev); + + sc->sc_memres = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->sc_memrid, + 0, ~1, 1, RF_ACTIVE); + if (sc->sc_memres == NULL) { + device_printf(dev, "could not allocate memory\n"); + goto error; + } + sc->sc_irqrid1 = 0; + sc->sc_irqres1 = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid1, + 0, ~0, 1, RF_ACTIVE); + if (sc->sc_irqres1 == NULL) { + device_printf(dev, "could not allocate interrupt 1\n"); + goto error; + } + if (bus_setup_intr(dev, sc->sc_irqres1, INTR_TYPE_TTY | INTR_FAST, + zs_intr, sc, &sc->sc_ih1) != 0) { + device_printf(dev, "could not setup interrupt 1\n"); + goto error; + } + sc->sc_irqrid2 = 1; + sc->sc_irqres2 = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid2, + 0, ~0, 1, RF_ACTIVE); + if (sc->sc_irqres2 == NULL) { + device_printf(dev, "could not allocate interrupt 2\n"); + goto error; + } + if (bus_setup_intr(dev, sc->sc_irqres2, INTR_TYPE_TTY | INTR_FAST, + zs_intr, sc, &sc->sc_ih2) != 0) { + device_printf(dev, "could not setup interrupt 2\n"); + goto error; + } + sc->sc_zs.sc_bt = rman_get_bustag(sc->sc_memres); + sc->sc_zs.sc_bh = rman_get_bushandle(sc->sc_memres); + return (zs_attach(dev)); + +error: + zs_macio_detach(dev); + return (ENXIO); +} + +static int +zs_macio_detach(device_t dev) +{ + struct zs_macio_softc *sc; + + sc = device_get_softc(dev); + if (sc->sc_irqres2 != NULL) { + if (sc->sc_ih2 != NULL) + bus_teardown_intr(dev, sc->sc_irqres2, sc->sc_ih2); + bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid2, + sc->sc_irqres2); + } + if (sc->sc_irqres1 != NULL) { + if (sc->sc_ih1 != NULL) + bus_teardown_intr(dev, sc->sc_irqres1, sc->sc_ih1); + bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid1, + sc->sc_irqres1); + } + if (sc->sc_memres != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, + sc->sc_memres); + return (0); +} + +static int +zstty_macio_probe(device_t dev) +{ + + if ((device_get_unit(dev) & 1) == 0) + device_set_desc(dev, "ttya"); + else + device_set_desc(dev, "ttyb"); + + return (zstty_probe(dev)); +} + +static int +zstty_macio_attach(device_t dev) +{ + struct zstty_softc *sc; + + sc = device_get_softc(dev); + sc->sc_parent = device_get_softc(device_get_parent(dev)); + sc->sc_bt = sc->sc_parent->sc_bt; + sc->sc_brg_clk = ZS_MACIO_CLOCK / ZS_MACIO_CLOCK_DIV; + + switch (device_get_unit(dev) & 1) { + case 0: + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_MACIO_CHAN_A + ZS_MACIO_CSR, 1, &sc->sc_csr); + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_MACIO_CHAN_A + ZS_MACIO_DATA, 1, &sc->sc_data); + break; + + case 1: + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_MACIO_CHAN_B + ZS_MACIO_CSR, 1, &sc->sc_csr); + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_MACIO_CHAN_B + ZS_MACIO_DATA, 1, &sc->sc_data); + break; + } + + bcopy(zs_macio_init_reg, sc->sc_creg, 16); + bcopy(zs_macio_init_reg, sc->sc_preg, 16); + + return (zstty_attach(dev)); +} + +void +zstty_set_speed(struct zstty_softc *sc, int ospeed) +{ + + sc->sc_preg[12] = ospeed; + sc->sc_preg[13] = ospeed >> 8; +} + +int +zstty_console(device_t dev, char *mode, int len) +{ + device_t parent; + phandle_t chosen, options; + ihandle_t stdin, stdout; + phandle_t stdinp, stdoutp; + char input[32], output[32]; + const char *desc; + + parent = device_get_parent(dev); + chosen = OF_finddevice("/chosen"); + options = OF_finddevice("/options"); + if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) == -1 || + OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1 || + OF_getprop(options, "input-device", input, sizeof(input)) == -1 || + OF_getprop(options, "output-device", output, + sizeof(output)) == -1) { + return (0); + } + stdinp = OF_parent(OF_instance_to_package(stdin)); + stdoutp = OF_parent(OF_instance_to_package(stdout)); + desc = device_get_desc(dev); + if (macio_get_node(parent) == stdinp && + macio_get_node(parent) == stdoutp && + input[3] == desc[3] && output[3] == desc[3]) { + if (mode != NULL) + strlcpy(mode, "57600,8,n,1,-", len); + + return (1); + } + + return (0); +} |