Oops, forgot to commit this file (Tadpole SPARCbook modem attachment code).

1 files changed, 133 insertions, 0 deletions

diff --git a/sys/arch/sparc/dev/com_obio.c b/sys/arch/sparc/dev/com_obio.c
new file mode 100644
index 00000000000..a50c366fa76
--- /dev/null
+++ b/sys/arch/sparc/dev/com_obio.c
@@ -0,0 +1,133 @@
+/*	$OpenBSD: com_obio.c,v 1.1 2005/07/17 12:22:42 miod Exp $	*/
+
+/*
+ * Copyright (c) 2005, Miodrag Vallat.
+ *
+ * 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.
+ */
+
+/*
+ * Driver for the built-in modem on Tadpole SPARCbooks, which provides a
+ * 16C450-compatible interface. Later models apparently are 16550A-compatible
+ * (i.e. with a 16 byte FIFO).
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/tty.h>
+
+#include <machine/bus.h>
+#include <sparc/sparc/auxioreg.h>
+
+#include <dev/ic/comreg.h>
+#include <dev/ic/comvar.h>
+
+int	com_obio_match(struct device *, void *, void *);
+void	com_obio_attach(struct device *, struct device *, void *);
+
+struct com_obio_softc {
+	struct com_softc	sc_com;
+	struct intrhand		sc_ih;
+	struct rom_reg		sc_reg;
+	int			sc_pwr;
+};
+
+struct cfattach com_obio_ca = {
+	sizeof(struct com_obio_softc), com_obio_match, com_obio_attach
+};
+
+void	com_obio_disable(struct com_softc *);
+int	com_obio_enable(struct com_softc *);
+
+int
+com_obio_match(struct device *parent, void *match, void *aux)
+{
+	struct confargs *ca = aux;
+
+	return (strcmp("modem", ca->ca_ra.ra_name) == 0);
+}
+
+void
+com_obio_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct confargs *ca = aux;
+	struct com_softc *sc = (void *)self;
+	struct com_obio_softc *osc = (void *)sc;
+
+	/* build a bus tag */
+	osc->sc_reg = ca->ca_ra.ra_reg[0];
+
+#if 0	/* not necessary as we don't compile com console support */
+	sc->sc_iobase = -1;
+#endif
+	sc->sc_iot = &osc->sc_reg;
+
+	if (ca->ca_ra.ra_nreg == 0 || bus_space_map(sc->sc_iot, 0,
+	    ca->ca_ra.ra_len, 0, &sc->sc_ioh) != 0) {
+		printf(": can't map modem registers\n");
+		return;
+	}
+
+	osc->sc_ih.ih_fun = comintr;
+	osc->sc_ih.ih_arg = sc;
+	intr_establish(ca->ca_ra.ra_intr[0].int_pri, &osc->sc_ih, -1,
+	    self->dv_xname);
+	printf(" pri %d", ca->ca_ra.ra_intr[0].int_pri);
+
+	sc->disable = com_obio_disable;
+	sc->enable = com_obio_enable;
+	osc->sc_pwr = getpropint(ca->ca_ra.ra_node, "pwr-on-auxio", 0);
+	com_obio_enable(sc);
+	sc->enabled = 1;
+
+	sc->sc_frequency = COM_FREQ;
+	com_attach_subr(sc);
+}
+
+void
+com_obio_disable(struct com_softc *sc)
+{
+	struct com_obio_softc *osc = (void *)sc;
+
+	if (osc->sc_pwr) {
+		sb_auxregbisc(0, 0, AUXIO_MODEM | AUXIO_MODEM_RESET);
+	}
+}
+
+int
+com_obio_enable(struct com_softc *sc)
+{
+	struct com_obio_softc *osc = (void *)sc;
+
+	if (osc->sc_pwr) {
+		/* enable and reset modem for 20 usec */
+		sb_auxregbisc(0, AUXIO_MODEM, AUXIO_MODEM_RESET);
+		delay(20);
+		/* end reset (active low) */
+		sb_auxregbisc(0, AUXIO_MODEM_RESET, 0);
+		/* give the device some time to settle */
+		delay(100);
+	}
+	return (0);
+}