Driver for the i8042 keyboard controller on systems with ebus

(why you'd want to use a PS/2 keyboard on a sun machine is beyond me,
but whatever...)

1 files changed, 202 insertions, 0 deletions

diff --git a/sys/arch/sparc64/dev/pckbc_ebus.c b/sys/arch/sparc64/dev/pckbc_ebus.c
new file mode 100644
index 00000000000..ee46465e7cd
--- /dev/null
+++ b/sys/arch/sparc64/dev/pckbc_ebus.c
@@ -0,0 +1,202 @@
+/*	$OpenBSD: pckbc_ebus.c,v 1.1 2002/02/18 17:52:08 jason Exp $	*/
+
+/*
+ * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Jason L. Wright
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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 i8042 keyboard controller found on some PCI based
+ * UltraSPARCs
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/conf.h>
+#include <sys/malloc.h>
+
+#include <machine/bus.h>
+#include <machine/autoconf.h>
+#include <machine/openfirm.h>
+
+#include <sparc64/dev/ebusreg.h>
+#include <sparc64/dev/ebusvar.h>
+
+#include <dev/ic/i8042reg.h>
+#include <dev/ic/pckbcvar.h>
+
+struct pckbc_ebus_softc {
+	struct pckbc_softc sc_pckbc;
+	bus_space_tag_t sc_iot;
+	bus_space_handle_t sc_ioh;
+	bus_space_handle_t sc_ioh_c;
+	bus_space_handle_t sc_ioh_d;
+	void *sc_irq[2];
+	int sc_node;
+};
+
+int pckbc_ebus_match(struct device *, void *, void *);
+void pckbc_ebus_attach(struct device *, struct device *, void *);
+
+struct cfattach pckbc_ebus_ca = {
+	sizeof(struct pckbc_ebus_softc), pckbc_ebus_match, pckbc_ebus_attach
+};
+
+void pckbc_ebus_intr_establish(struct pckbc_softc *, pckbc_slot_t);
+int pckbc_ebus_is_console(struct pckbc_ebus_softc *);
+
+int
+pckbc_ebus_match(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct ebus_attach_args *ea = aux;
+
+	if (strcmp(ea->ea_name, "8042") == 0)
+		return (1);
+	return (0);
+}
+
+void
+pckbc_ebus_attach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct pckbc_ebus_softc *sc = (void *)self;
+	struct pckbc_softc *psc = &sc->sc_pckbc;
+	struct ebus_attach_args *ea = aux;
+	struct pckbc_internal *t;
+	int console;
+
+	sc->sc_iot = ea->ea_bustag;
+	sc->sc_node = ea->ea_node;
+	console = pckbc_ebus_is_console(sc);
+
+	if (console) {
+		if (pckbc_cnattach(sc->sc_iot,
+		    EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), KBCMDP,
+		    PCKBC_KBD_SLOT) == 0) {
+			t = &pckbc_consdata;
+			pckbc_console_attached = 1;
+			sc->sc_ioh_c = t->t_ioh_c;
+			sc->sc_ioh_d = t->t_ioh_d;
+		} else
+			console = 0;
+	}
+
+	if (console == 0) {
+		/* Use prom address if available, otherwise map it. */
+		if (ea->ea_nvaddrs)
+			sc->sc_ioh = (bus_space_handle_t)ea->ea_vaddrs[0];
+		else if (ebus_bus_map(sc->sc_iot, 0,
+		    EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
+		    BUS_SPACE_MAP_LINEAR, 0, &sc->sc_ioh) != 0) {
+			printf(": can't map register space\n");
+			return;
+		}
+
+		if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
+		    KBCMDP, sizeof(u_int32_t), &sc->sc_ioh_c) != 0) {
+			printf(": couldn't get cmd subregion\n");
+			return;
+		}
+		if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
+		    KBDATAP, sizeof(u_int32_t), &sc->sc_ioh_d) != 0) {
+			printf(": couldn't get data subregion\n");
+			return;
+		}
+
+		t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_NOWAIT);
+		bzero(t, sizeof(struct pckbc_internal));
+	}
+
+	psc->intr_establish = pckbc_ebus_intr_establish;
+
+	sc->sc_irq[0] = bus_intr_establish(ea->ea_bustag, ea->ea_intrs[0],
+	    IPL_TTY, 0, pckbcintr, psc);
+	if (sc->sc_irq[0] == NULL) {
+		printf(": couldn't get intr0\n");
+		return;
+	}
+
+	sc->sc_irq[1] = bus_intr_establish(ea->ea_bustag, ea->ea_intrs[1],
+	    IPL_TTY, 0, pckbcintr, psc);
+	if (sc->sc_irq[1] == NULL) {
+		printf(": couldn't get intr1\n");
+		return;
+	}
+
+	t->t_iot = sc->sc_iot;
+	t->t_ioh_c = sc->sc_ioh_c;
+	t->t_ioh_d = sc->sc_ioh_d;
+	t->t_cmdbyte = KC8_CPU;
+	t->t_sc = psc;
+	psc->id = t;
+
+	printf("\n");
+	pckbc_attach(psc);
+
+}
+
+int
+pckbc_ebus_is_console(sc)
+	struct pckbc_ebus_softc *sc;
+{
+	char *name;
+	int node;
+
+	/*
+	 * Loop through the children of 8042 and see if the keyboard
+	 * exists, and further, whether it is the console input device.
+	 * This is almost redundant because 8042 doesn't show up in
+	 * device tree unless a keyboard is in fact attached.
+	 */
+	for (node = OF_child(sc->sc_node); node; node = OF_peer(node)) {
+		name = getpropstring(node, "name");
+		if (name == NULL)
+			continue;
+		if (strcmp("kb_ps2", name) == 0 ||
+		    strcmp("keyboard", name) == 0) {
+			if (node == OF_instance_to_package(OF_stdin()))
+				return (1);
+		}
+	}
+	return (0);
+}
+
+void
+pckbc_ebus_intr_establish(psc, slot)
+	struct pckbc_softc *psc;
+	pckbc_slot_t slot;
+{
+	/* Nothing to do, interrupts were mapped in attach. */
+}