[src/trunk]: src/sys/arch/sparc64/dev Driver for pckbc at ebus, as found on T...

[jdc <jdc%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a25028aba774
branches:  trunk
changeset: 781952:a25028aba774
user:      jdc <jdc%NetBSD.org@localhost>
date:      Tue Oct 09 20:55:04 2012 +0000

description:
Driver for pckbc at ebus, as found on Tadpole SPARCle.
Largely based on sparc's pckbc_js.c.

diffstat:

 sys/arch/sparc64/dev/pckbc_ebus.c |  182 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 182 insertions(+), 0 deletions(-)

diffs (186 lines):

diff -r 2890836725c7 -r a25028aba774 sys/arch/sparc64/dev/pckbc_ebus.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sparc64/dev/pckbc_ebus.c Tue Oct 09 20:55:04 2012 +0000
@@ -0,0 +1,182 @@
+/*     $NetBSD: pckbc_ebus.c,v 1.1 2012/10/09 20:55:04 jdc Exp $ */
+
+/*
+ * Copyright (c) 2002 Valeriy E. Ushakov
+ * 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. 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: pckbc_ebus.c,v 1.1 2012/10/09 20:55:04 jdc Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/bus.h>
+#include <sys/intr.h>
+
+#include <machine/autoconf.h>
+
+#include <dev/ic/i8042reg.h>
+#include <dev/ic/pckbcvar.h>
+#include <dev/pckbport/pckbportvar.h>
+
+#include <dev/ebus/ebusreg.h>
+#include <dev/ebus/ebusvar.h>
+
+struct pckbc_ebus_softc {
+       struct pckbc_softc psc_pckbc;   /* real "pckbc" softc */
+       uint32_t psc_intr[PCKBC_NSLOTS];
+};
+
+static int     pckbc_ebus_match(device_t, cfdata_t, void *);
+static void    pckbc_ebus_attach(device_t, device_t, void *);
+
+static void    pckbc_ebus_intr_establish(struct pckbc_softc *, pckbport_slot_t);
+
+#define PCKBC_PROM_DEVICE_NAME "8042"
+
+CFATTACH_DECL_NEW(pckbc_ebus, sizeof(struct pckbc_ebus_softc),
+    pckbc_ebus_match, pckbc_ebus_attach, NULL, NULL);
+
+
+static int
+pckbc_ebus_match(device_t parent, cfdata_t cf, void *aux)
+{
+       struct ebus_attach_args *ea = aux;
+
+       return (strcmp(ea->ea_name, PCKBC_PROM_DEVICE_NAME) == 0);
+}
+
+static void
+pckbc_ebus_attach(device_t parent, device_t self, void *aux)
+{
+       struct pckbc_ebus_softc *sc = device_private(self);
+       struct pckbc_softc *psc = (struct pckbc_softc *) sc;
+       struct ebus_attach_args *ea = aux;
+       struct pckbc_internal *t;
+       bus_space_tag_t iot;
+       bus_addr_t ioaddr;
+       int stdin_node, node;
+       int isconsole, i;
+
+       psc->sc_dv = self;
+       iot = ea->ea_bustag;
+       ioaddr = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]);
+
+       stdin_node = prom_instance_to_package(prom_stdin());
+       isconsole = 0;
+       for (node = prom_firstchild(ea->ea_node);
+            node != 0; node = prom_nextsibling(node))
+               if (node == stdin_node) {
+                       isconsole = 1;
+                       break;
+               }
+
+       psc->intr_establish = pckbc_ebus_intr_establish;
+
+       for (i = 0; i < PCKBC_NSLOTS; i++)
+               sc->psc_intr[i] = ea->ea_intr[i];
+
+       if (isconsole) {
+               int status;
+
+               status = pckbc_cnattach(iot, ioaddr, KBCMDP, 0,
+                   PCKBC_NEED_AUXWRITE | PCKBC_CANT_TRANSLATE);
+               if (status == 0)
+                       aprint_normal(": cnattach ok");
+               else
+                       aprint_error(": cnattach %d", status);
+       }
+
+       if (pckbc_is_console(iot, ioaddr)) {
+               t = &pckbc_consdata;
+               pckbc_console_attached = 1;
+       } else {
+               bus_space_handle_t ioh_d, ioh_c;
+
+               if (bus_space_map(iot, ioaddr + KBDATAP, 1, 0, &ioh_d) != 0) {
+                       aprint_error(": unable to map data register\n");
+                       return;
+               }
+
+               if (bus_space_map(iot, ioaddr + KBCMDP,  1, 0, &ioh_c) != 0) {
+                       bus_space_unmap(iot, ioh_d, 1);
+                       aprint_error(": unable to map cmd register\n");
+                       return;
+               }
+
+               t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_WAITOK);
+               memset(t, 0, sizeof(struct pckbc_internal));
+               t->t_iot = iot;
+               t->t_ioh_d = ioh_d;
+               t->t_ioh_c = ioh_c;
+               t->t_addr = ioaddr;
+               t->t_cmdbyte = KC8_CPU; /* initial command: enable ports */
+               callout_init(&t->t_cleanup, 0);
+
+               (void) pckbc_poll_data1(t, PCKBC_KBD_SLOT); /* flush */
+
+               if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0)
+                       aprint_error(": unable to request self test");
+               else {
+                       int response;
+
+                       response = pckbc_poll_data1(t, PCKBC_KBD_SLOT);
+                       if (response == 0x55)
+                               aprint_normal(": selftest ok");
+                       else
+                               aprint_error(": selftest failed (0x%02x)",
+                                   response);
+               }
+       }
+
+       /* crosslink */
+       t->t_sc = psc;
+       psc->id = t;
+
+       /* finish off the attach */
+       aprint_normal("\n");
+       pckbc_attach(psc);
+}
+
+
+static void
+pckbc_ebus_intr_establish(struct pckbc_softc *sc, pckbport_slot_t slot)
+{
+       struct pckbc_ebus_softc *psc = (struct pckbc_ebus_softc *)sc;
+       void *res;
+
+       /* We assume that interrupt order is the same as slot order. */
+       res = bus_intr_establish(sc->id->t_iot, psc->psc_intr[slot],
+                                IPL_TTY, pckbcintr, sc);
+       if (res == NULL)
+               aprint_error_dev(sc->sc_dv,
+                   "unable to establish %s slot interrupt\n",
+                   pckbc_slot_names[slot]);
+
+       return;
+}