[src/trunk]: src/sys/arch/amiga/dev At long last, the MI wdc glue for the Ami...

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

details:   https://anonhg.NetBSD.org/src/rev/4d09a7b2d847
branches:  trunk
changeset: 481769:4d09a7b2d847
user:      mhitch <mhitch%NetBSD.org@localhost>
date:      Sat Feb 05 18:46:28 2000 +0000

description:
At long last, the MI wdc glue for the Amiga.  Tested on my A4000, but not
on an A1200 yet.  Configuration of wdc/atapi in GENERIC is currently
commented out to prevent the suprise of an IDE drive changing from sd0
to wd0 (and the first real SCSI drive changing from sd1/sd1 to sd0).

diffstat:

 sys/arch/amiga/dev/wdc_amiga.c |  154 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 154 insertions(+), 0 deletions(-)

diffs (158 lines):

diff -r b71131391e4d -r 4d09a7b2d847 sys/arch/amiga/dev/wdc_amiga.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/amiga/dev/wdc_amiga.c    Sat Feb 05 18:46:28 2000 +0000
@@ -0,0 +1,154 @@
+/*     $NetBSD: wdc_amiga.c,v 1.1 2000/02/05 18:46:28 mhitch Exp $     */
+
+/*-
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Michael L. Hitch.
+ *
+ * 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 the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/device.h>
+
+#include <machine/cpu.h>
+#include <machine/bus.h>
+#include <machine/intr.h>
+#include <machine/bswap.h>
+
+#include <amiga/amiga/cia.h>
+#include <amiga/amiga/custom.h>
+#include <amiga/amiga/device.h>
+#include <amiga/amiga/gayle.h>
+#include <amiga/dev/zbusvar.h>
+
+#include <dev/ata/atavar.h>
+#include <dev/ic/wdcvar.h>
+
+struct wdc_amiga_softc {
+       struct wdc_softc sc_wdcdev;
+       struct  channel_softc *wdc_chanptr;
+       struct  channel_softc wdc_channel;
+       struct isr sc_isr;
+       volatile u_char *sc_intreg;
+       struct bus_space_tag iot;
+       char    sc_a1200;
+};
+
+int    wdc_amiga_probe __P((struct device *, struct cfdata *, void *));
+void   wdc_amiga_attach        __P((struct device *, struct device *, void *));
+int    wdc_amiga_intr  __P((void *));
+
+struct cfattach wdc_amiga_ca = {
+       sizeof(struct wdc_amiga_softc), wdc_amiga_probe, wdc_amiga_attach
+};
+
+int
+wdc_amiga_probe(parent, cfp, aux)
+       struct device *parent;
+       struct cfdata *cfp;
+       void *aux;
+{
+       if (!(is_a4000() && !is_a1200()) || !matchname(aux, "wdc"))
+               return(0);
+       return 1;
+}
+
+void
+wdc_amiga_attach(parent, self, aux)
+       struct device *parent, *self;
+       void *aux;
+{
+       struct wdc_amiga_softc *sc = (void *)self;
+
+       printf("\n");
+
+       if (is_a4000()) {
+               sc->iot.base = (u_long)ztwomap(0xdd2020 + 2);
+               sc->sc_intreg = (u_char *)ztwomap(0xdd2020 + 0x1000);
+       } else {
+               sc->iot.base = (u_long)ztwomap(0xda0000 + 2);
+               sc->sc_a1200 = 1;
+               sc->sc_intreg = &gayle.intreq;
+               gayle_init();
+               gayle.intena |= GAYLE_INT_IDE;
+       }
+       sc->iot.absm = &amiga_bus_stride_4swap;
+       sc->wdc_channel.cmd_iot = sc->wdc_channel.ctl_iot = &sc->iot;
+       if (bus_space_map(sc->wdc_channel.cmd_iot, 0, 0x40, 0,
+                         &sc->wdc_channel.cmd_ioh)) {
+               printf("%s: couldn't map registers\n",
+                   sc->sc_wdcdev.sc_dev.dv_xname);
+               return;
+       }
+       if (bus_space_subregion(sc->wdc_channel.cmd_iot,
+           sc->wdc_channel.cmd_ioh, 0x406, 1, &sc->wdc_channel.ctl_ioh))
+               return;
+
+       sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
+       sc->sc_wdcdev.PIO_cap = 0;
+       sc->wdc_chanptr = &sc->wdc_channel;
+       sc->sc_wdcdev.channels = &sc->wdc_chanptr;
+       sc->sc_wdcdev.nchannels = 1;
+       sc->wdc_channel.channel = 0;
+       sc->wdc_channel.wdc = &sc->sc_wdcdev;
+       sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue),
+           M_DEVBUF, M_NOWAIT);
+       if (sc->wdc_channel.ch_queue == NULL) {
+           printf("%s: can't allocate memory for command queue",
+               sc->sc_wdcdev.sc_dev.dv_xname);
+           return;
+       }
+       sc->sc_isr.isr_intr = wdc_amiga_intr;
+       sc->sc_isr.isr_arg = sc;
+       sc->sc_isr.isr_ipl = 2;
+       add_isr (&sc->sc_isr);
+
+       wdcattach(&sc->wdc_channel);
+
+}
+
+int
+wdc_amiga_intr(arg)
+       void *arg;
+{
+       struct wdc_amiga_softc *sc = (struct wdc_amiga_softc *)arg;
+
+       if ((*sc->sc_intreg & 0x80) == 0)
+               return 0;
+       wdcintr(&sc->wdc_channel);
+       if (sc->sc_a1200)
+               *sc->sc_intreg = 0x7c | (*sc->sc_intreg & 0x03);
+       return(1);
+}