diff options
Diffstat (limited to 'sys/dev/zs/zs_sbus.c')
-rw-r--r-- | sys/dev/zs/zs_sbus.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/sys/dev/zs/zs_sbus.c b/sys/dev/zs/zs_sbus.c new file mode 100644 index 0000000..a3e3ddf --- /dev/null +++ b/sys/dev/zs/zs_sbus.c @@ -0,0 +1,281 @@ +/*- + * Copyright (c) 2003 Jake Burkholder. + * 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 <sys/lock.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <ofw/openfirm.h> +#include <sparc64/sbus/sbusvar.h> + +#include <dev/zs/z8530reg.h> +#include <dev/zs/z8530var.h> + +#define ZS_SBUS_CHAN_A 4 +#define ZS_SBUS_CHAN_B 0 + +#define ZS_SBUS_CSR 0 +#define ZS_SBUS_DATA 2 + +#define ZS_SBUS_CLOCK (9600 * 512) +#define ZS_SBUS_CLOCK_DIV (16) + +#define ZS_SBUS_DEF_SPEED (9600) + +struct zs_sbus_softc { + struct zs_softc sc_zs; + struct resource *sc_irqres; + int sc_irqrid; + void *sc_ih; + struct resource *sc_memres; + int sc_memrid; +}; + +static int zs_sbus_attach(device_t dev); +static int zs_sbus_detach(device_t dev); +static int zs_sbus_probe(device_t dev); + +static int zstty_sbus_attach(device_t dev); +static int zstty_sbus_probe(device_t dev); + +static int zstty_keyboard(device_t dev); + +static device_method_t zs_sbus_methods[] = { + DEVMETHOD(device_probe, zs_sbus_probe), + DEVMETHOD(device_attach, zs_sbus_attach), + DEVMETHOD(device_detach, zs_sbus_detach), + + DEVMETHOD(bus_print_child, bus_generic_print_child), + + { 0, 0 } +}; + +static device_method_t zstty_sbus_methods[] = { + DEVMETHOD(device_probe, zstty_sbus_probe), + DEVMETHOD(device_attach, zstty_sbus_attach), + DEVMETHOD(device_detach, bus_generic_detach), + + { 0, 0 } +}; + +static driver_t zs_sbus_driver = { + "zs", + zs_sbus_methods, + sizeof(struct zs_sbus_softc), +}; + +static driver_t zstty_sbus_driver = { + "zstty", + zstty_sbus_methods, + sizeof(struct zstty_softc), +}; + +static devclass_t zs_sbus_devclass; +static devclass_t zstty_sbus_devclass; + +DRIVER_MODULE(zstty, zs, zstty_sbus_driver, zstty_sbus_devclass, 0, 0); +DRIVER_MODULE(zs, sbus, zs_sbus_driver, zs_sbus_devclass, 0, 0); + +static uint8_t zs_sbus_init_reg[16] = { + 0, /* 0: CMD (reset, etc.) */ + 0, /* 1: No interrupts yet. */ + 0, /* 2: IVECT */ + ZSWR3_RX_8 | ZSWR3_RX_ENABLE, + ZSWR4_CLK_X16 | ZSWR4_ONESB | ZSWR4_EVENP, + 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, + ((ZS_SBUS_CLOCK/32)/ZS_SBUS_DEF_SPEED)-2, + 0, + ZSWR14_BAUD_ENA | ZSWR14_BAUD_FROM_PCLK, + ZSWR15_BREAK_IE, +}; + + +static int +zs_sbus_probe(device_t dev) +{ + + if (strcmp(sbus_get_name(dev), "zs") != 0 || + device_get_unit(dev) != 0) + return (ENXIO); + return (zs_probe(dev)); +} + +static int +zs_sbus_attach(device_t dev) +{ + struct zs_sbus_softc *sc; + + sc = device_get_softc(dev); + sc->sc_memres = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->sc_memrid, + 0, ~0, 1, RF_ACTIVE); + if (sc->sc_memres == NULL) + goto error; + sc->sc_irqres = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid, 0, + ~0, 1, RF_ACTIVE); + if (sc->sc_irqres == NULL) + goto error; + if (bus_setup_intr(dev, sc->sc_irqres, INTR_TYPE_TTY | INTR_FAST, + zs_intr, sc, &sc->sc_ih) != 0) + 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_sbus_detach(dev); + return (ENXIO); +} + +static int +zs_sbus_detach(device_t dev) +{ + struct zs_sbus_softc *sc; + + sc = device_get_softc(dev); + if (sc->sc_irqres != NULL) { + if (sc->sc_ih != NULL) + bus_teardown_intr(dev, sc->sc_irqres, sc->sc_ih); + bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid, + sc->sc_irqres); + } + if (sc->sc_memres != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, + sc->sc_memres); + return (0); +} + +static int +zstty_sbus_probe(device_t dev) +{ + + if (zstty_keyboard(dev)) { + if ((device_get_unit(dev) & 1) == 0) + device_set_desc(dev, "keyboard"); + else + device_set_desc(dev, "mouse"); + } else { + 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_sbus_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_SBUS_CLOCK / ZS_SBUS_CLOCK_DIV; + + switch (device_get_unit(dev) & 1) { + case 0: + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_SBUS_CHAN_A + ZS_SBUS_CSR, 1, &sc->sc_csr); + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_SBUS_CHAN_A + ZS_SBUS_DATA, 1, &sc->sc_data); + break; + case 1: + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_SBUS_CHAN_B + ZS_SBUS_CSR, 1, &sc->sc_csr); + bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, + ZS_SBUS_CHAN_B + ZS_SBUS_DATA, 1, &sc->sc_data); + break; + } + + bcopy(zs_sbus_init_reg, sc->sc_creg, 16); + bcopy(zs_sbus_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; + phandle_t options; + ihandle_t stdin; + ihandle_t stdout; + char output[32]; + char input[32]; + char name[32]; + + 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); + if (sbus_get_node(parent) == OF_instance_to_package(stdin) && + sbus_get_node(parent) == OF_instance_to_package(stdout) && + strcmp(input, device_get_desc(dev)) == 0 && + strcmp(output, device_get_desc(dev)) == 0) { + if (mode != NULL) { + sprintf(name, "%s-mode", input); + return (OF_getprop(options, name, mode, len) != -1); + } else + return (1); + } + return (0); +} + +static int +zstty_keyboard(device_t dev) +{ + device_t parent; + + parent = device_get_parent(dev); + return (OF_getproplen(sbus_get_node(parent), "keyboard") == 0); +} |