1 files changed, 470 insertions, 0 deletions

diff --git a/sys/dev/digi/digi_isa.c b/sys/dev/digi/digi_isa.c
new file mode 100644
index 0000000..8667095
--- /dev/null
+++ b/sys/dev/digi/digi_isa.c
@@ -0,0 +1,470 @@
+/*-
+ * Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
+ *   based on work by Slawa Olhovchenkov
+ *                    John Prince <johnp@knight-trosoft.com>
+ *                    Eric Hernes
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*-
+ * TODO:
+ *	Figure out how to make the non-Xi boards use memory addresses other
+ *	than 0xd0000 !!!
+ */
+
+#include <sys/param.h>
+
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/tty.h>
+#include <sys/bus.h>
+#include <machine/bus.h>
+#include <sys/rman.h>
+#include <machine/resource.h>
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <sys/digiio.h>
+#include <dev/digi/digireg.h>
+#include <dev/digi/digi.h>
+
+/* Valid i/o addresses are any of these with either 0 or 4 added */
+static u_long digi_validio[] = {
+	0x100, 0x110, 0x120, 0x200, 0x220, 0x300, 0x320
+};
+#define DIGI_NVALIDIO	(sizeof(digi_validio) / sizeof(digi_validio[0]))
+#define	IO_SIZE		0x04
+
+static u_long digi_validmem[] = {
+	0x80000, 0x88000, 0x90000, 0x98000, 0xa0000, 0xa8000, 0xb0000, 0xb8000,
+	0xc0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000, 0xe8000, 0xf0000, 0xf8000,
+	0xf0000000, 0xf1000000, 0xf2000000, 0xf3000000, 0xf4000000, 0xf5000000,
+	0xf6000000, 0xf7000000, 0xf8000000, 0xf9000000, 0xfa000000, 0xfb000000,
+	0xfc000000, 0xfd000000, 0xfe000000, 0xff000000
+};
+#define DIGI_NVALIDMEM	(sizeof(digi_validmem) / sizeof(digi_validmem[0]))
+
+static u_char *
+digi_isa_setwin(struct digi_softc *sc, unsigned int addr)
+{
+	outb(sc->wport, sc->window = FEPWIN | (addr >> sc->win_bits));
+	return (sc->vmem + (addr % sc->win_size));
+}
+
+static u_char *
+digi_xi_setwin(struct digi_softc *sc, unsigned int addr)
+{
+	outb(sc->wport, sc->window = FEPMEM);
+	return (sc->vmem + addr);
+}
+
+static void
+digi_isa_hidewin(struct digi_softc *sc)
+{
+	outb(sc->wport, sc->window = 0);
+	/* outb(sc->port, 0); */
+}
+
+static void
+digi_isa_towin(struct digi_softc *sc, int win)
+{
+	outb(sc->wport, sc->window = win);
+}
+
+static void
+digi_xi_towin(struct digi_softc *sc, int win)
+{
+	outb(sc->wport, sc->window = FEPMEM);
+}
+
+/*
+ * sc->port should be set and its resource allocated.
+ */
+static int
+digi_isa_check(struct digi_softc *sc)
+{
+	int i, ident;
+
+	sc->name = NULL;
+
+	/* Invasive probe - reset the card */
+	outb(sc->port, FEPRST);
+	for (i = 0; (inb(sc->port) & FEPMASK) != FEPRST; i++) {
+		if (i == hz / 10)
+			return (0);
+		digi_delay(sc, "digirst", 1);
+	}
+	DLOG(DIGIDB_INIT, (sc->dev, "got reset after %d iterations\n", i));
+
+	ident = inb(sc->port);
+
+	/*
+	 * NOTE, this probe is all wrong.  I haven't got the data sheets !
+	 */
+
+	DLOG(DIGIDB_INIT, (sc->dev, "board type is 0x%x\n", ident));
+	if (ident & 0x1) {
+		switch (ident) {
+		case 0x05:
+		case 0x15:
+		case 0x25:
+		case 0x35:
+			sc->model = PCXI;
+			sc->csigs = &digi_xixe_signals;
+			switch (ident & 0x30) {
+			case 0:
+				sc->name = "Digiboard PC/Xi 64K";
+				sc->mem_seg = 0xf000;
+				sc->win_size = 0x10000;
+				sc->win_bits = 16;
+				break;
+			case 0x10:
+				sc->name = "Digiboard PC/Xi 128K";
+				sc->mem_seg = 0xE000;
+				sc->win_size = 0x20000;
+				sc->win_bits = 17;
+				break;
+			case 0x20:
+				sc->name = "Digiboard PC/Xi 256K";
+				sc->mem_seg = 0xC000;
+				sc->win_size = 0x40000;
+				sc->win_bits = 18;
+				break;
+			case 0x30:
+				sc->name = "Digiboard PC/Xi 512K";
+				sc->mem_seg = 0x8000;
+				sc->win_size = 0x80000;
+				sc->win_bits = 19;
+				break;
+			}
+			sc->wport = sc->port;
+			sc->module = "Xe";
+
+			sc->setwin = digi_xi_setwin;
+			sc->hidewin = digi_isa_hidewin;
+			sc->towin = digi_xi_towin;
+			break;
+
+		case 0xf5:
+			sc->name = "Digiboard PC/Xem";
+			sc->model = PCXEM;
+			sc->csigs = &digi_normal_signals;
+			sc->win_size = 0x8000;
+			sc->win_bits = 15;
+			sc->wport = sc->port + 1;
+			sc->module = "Xem";
+
+			sc->setwin = digi_isa_setwin;
+			sc->hidewin = digi_isa_hidewin;
+			sc->towin = digi_isa_towin;
+			break;
+		}
+	} else {
+		outb(sc->port, 1);
+		ident = inb(sc->port);
+
+		if (ident & 0x1) {
+			device_printf(sc->dev, "PC/Xm is unsupported\n");
+			return (0);
+		}
+
+		sc->mem_seg = 0xf000;
+
+		if (!(ident & 0xc0)) {
+			sc->name = "Digiboard PC/Xe 64K";
+			sc->model = PCXE;
+			sc->csigs = &digi_xixe_signals;
+			sc->win_size = 0x10000;
+			sc->win_bits = 16;
+			sc->wport = sc->port;
+		} else {
+			sc->name = "Digiboard PC/Xe 64/8K (windowed)";
+			sc->model = PCXEVE;
+			sc->csigs = &digi_normal_signals;
+			sc->win_size = 0x2000;
+			sc->win_bits = 13;
+			sc->wport = sc->port + 1;
+		}
+		sc->module = "Xe";
+
+		sc->setwin = digi_isa_setwin;
+		sc->hidewin = digi_isa_hidewin;
+		sc->towin = digi_isa_towin;
+	}
+
+	return (sc->name != NULL);
+}
+
+static int
+digi_isa_probe(device_t dev)
+{
+	struct digi_softc *sc = device_get_softc(dev);
+	int i;
+
+	KASSERT(sc, ("digi%d: softc not allocated in digi_isa_probe\n",
+	    device_get_unit(dev)));
+
+	bzero(sc, sizeof(*sc));
+	sc->status = DIGI_STATUS_NOTINIT;
+	sc->dev = dev;
+	sc->res.unit = device_get_unit(dev);
+	if (sc->res.unit >= 16) {
+		/* Don't overflow our control mask */
+		device_printf(dev, "At most 16 digiboards may be used\n");
+		return (ENXIO);
+	}
+	DLOG(DIGIDB_INIT, (sc->dev, "probing on isa bus\n"));
+
+	/* Check that we've got a valid i/o address */
+	if ((sc->port = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0) {
+		DLOG(DIGIDB_INIT, (sc->dev, "io address not given\n"));
+		return (ENXIO);
+	}
+	for (i = 0; i < DIGI_NVALIDIO; i++)
+		if (sc->port == digi_validio[i] ||
+		    sc->port == digi_validio[i] + 4)
+			break;
+	if (i == DIGI_NVALIDIO) {
+		device_printf(dev, "0x%03x: Invalid i/o address\n", sc->port);
+		return (ENXIO);
+	}
+
+	/* Ditto for our memory address */
+	if ((sc->pmem = bus_get_resource_start(dev, SYS_RES_MEMORY, 0)) == 0)
+		return (ENXIO);
+	for (i = 0; i < DIGI_NVALIDMEM; i++)
+		if (sc->pmem == digi_validmem[i])
+			break;
+	if (i == DIGI_NVALIDMEM) {
+		device_printf(dev, "0x%lx: Invalid memory address\n", sc->pmem);
+		return (ENXIO);
+	}
+	if ((sc->pmem & 0xfffffful) != sc->pmem) {
+		device_printf(dev, "0x%lx: Memory address not supported\n",
+		    sc->pmem);
+		return (ENXIO);
+	}
+	sc->vmem = (u_char *)sc->pmem;
+
+	DLOG(DIGIDB_INIT, (sc->dev, "isa? port 0x%03x mem 0x%lx\n",
+	    sc->port, sc->pmem));
+
+	/* Temporarily map our io ports */
+	sc->res.iorid = 0;
+	sc->res.io = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->res.iorid,
+	    0ul, ~0ul, IO_SIZE, RF_ACTIVE);
+	if (sc->res.io == NULL)
+		return (ENXIO);
+
+	/* Check the type of card and get internal memory characteristics */
+	if (!digi_isa_check(sc)) {
+		bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
+		    sc->res.io);
+		return (ENXIO);
+	}
+
+	/* Temporarily map our memory */
+	sc->res.mrid = 0;
+	sc->res.mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->res.mrid,
+	    0ul, ~0ul, sc->win_size, RF_ALLOCATED);
+	if (sc->res.mem == NULL) {
+		device_printf(dev, "0x%lx: Memory range is in use\n", sc->pmem);
+		bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
+		    sc->res.io);
+		return (ENXIO);
+	}
+
+	outb(sc->port, FEPCLR);		/* drop RESET */
+	sc->hidewin(sc);	/* set initial sc->window */
+
+	bus_release_resource(dev, SYS_RES_MEMORY, sc->res.mrid, sc->res.mem);
+	bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid, sc->res.io);
+
+	/* Let digi_isa_attach() know what we've found */
+	bus_set_resource(dev, SYS_RES_IOPORT, 0, sc->port, IO_SIZE);
+	bus_set_resource(dev, SYS_RES_MEMORY, 0, sc->pmem, sc->win_size);
+
+	DLOG(DIGIDB_INIT, (sc->dev, "Probe returns -10\n"));
+
+	return (-10);		/* Other drivers are preferred for now */
+}
+
+static int
+digi_isa_attach(device_t dev)
+{
+	struct digi_softc *sc = device_get_softc(dev);
+	int i, t, res;
+	u_char *ptr;
+	int reset;
+	u_long msize, iosize;
+	long scport;
+
+	KASSERT(sc, ("digi%d: softc not allocated in digi_isa_attach\n",
+	    device_get_unit(dev)));
+
+	res = ENXIO;
+	bzero(sc, sizeof(*sc));
+	sc->status = DIGI_STATUS_NOTINIT;
+	sc->dev = dev;
+	sc->res.unit = device_get_unit(dev);
+	DLOG(DIGIDB_INIT, (sc->dev, "attaching\n"));
+
+	bus_get_resource(dev, SYS_RES_IOPORT, 0, &scport, &iosize);
+	bus_get_resource(dev, SYS_RES_MEMORY, 0, &sc->pmem, &msize);
+	sc->port = scport;
+	/* sc->altpin = !!(device_get_flags(dev) & DGBFLAG_ALTPIN); */
+
+	/* Allocate resources (verified in digi_isa_probe()) */
+	sc->res.iorid = 0;
+	sc->res.io = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->res.iorid,
+	    0ul, ~0ul, iosize, RF_ACTIVE);
+	if (sc->res.io == NULL)
+		return (ENXIO);
+
+	/* Check the type of card and get internal memory characteristics */
+	DLOG(DIGIDB_INIT, (sc->dev, "Checking card type\n"));
+	if (!digi_isa_check(sc))
+		goto failed;
+
+	callout_handle_init(&sc->callout);
+	callout_handle_init(&sc->inttest);
+
+	sc->res.mrid = 0;
+	sc->res.mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->res.mrid,
+	    0ul, ~0ul, msize, RF_ACTIVE);
+	if (sc->res.mem == NULL) {
+		device_printf(dev, "0x%lx: Memory range is in use\n", sc->pmem);
+		sc->hidewin(sc);
+		goto failed;
+	}
+
+	/* map memory */
+	sc->vmem = pmap_mapdev(sc->pmem, msize);
+
+	DLOG(DIGIDB_INIT, (sc->dev, "internal memory segment 0x%x\n",
+	    sc->mem_seg));
+
+	/* Start by resetting the card */
+	reset = FEPRST;
+	if (sc->model == PCXI)
+		reset |= FEPMEM;
+
+	outb(sc->port, reset);
+	for (i = 0; (inb(sc->port) & FEPMASK) != reset; i++) {
+		if (i == hz / 10) {
+			device_printf(dev, "1st reset failed\n");
+			sc->hidewin(sc);
+			goto failed;
+		}
+		digi_delay(sc, "digirst1", 1);
+	}
+	DLOG(DIGIDB_INIT, (sc->dev, "got reset after %d iterations\n", i));
+
+	if (sc->model != PCXI) {
+		t = (sc->pmem >> 8) & 0xffe0;
+		if (sc->model == PCXEVE)
+			t |= 0x10;		/* enable windowing */
+		outb(sc->port + 2, t & 0xff);
+		outb(sc->port + 3, t >> 8);
+	}
+
+	if (sc->model == PCXI || sc->model == PCXE) {
+		outb(sc->port, FEPRST | FEPMEM);
+		for (i = 0; (inb(sc->port) & FEPMASK) != FEPRST; i++) {
+			if (i == hz / 10) {
+				device_printf(dev,
+				    "memory reservation failed (0x%02x)\n",
+				    inb(sc->port));
+				sc->hidewin(sc);
+				goto failed;
+			}
+			digi_delay(sc, "digirst2", 1);
+		}
+		DLOG(DIGIDB_INIT, (sc->dev, "got memory after %d iterations\n",
+		    i));
+	}
+
+	DLOG(DIGIDB_INIT, (sc->dev, "short memory test\n"));
+	ptr = sc->setwin(sc, BOTWIN);
+	vD(ptr) = 0xA55A3CC3;
+	if (vD(ptr) != 0xA55A3CC3) {
+		device_printf(dev, "1st memory test failed\n");
+		sc->hidewin(sc);
+		goto failed;
+	}
+	DLOG(DIGIDB_INIT, (sc->dev, "1st memory test ok\n"));
+
+	ptr = sc->setwin(sc, TOPWIN);
+	vD(ptr) = 0x5AA5C33C;
+	if (vD(ptr) != 0x5AA5C33C) {
+		device_printf(dev, "2nd memory test failed\n");
+		sc->hidewin(sc);
+		goto failed;
+	}
+	DLOG(DIGIDB_INIT, (sc->dev, "2nd memory test ok\n"));
+
+	ptr = sc->setwin(sc, BIOSCODE + ((0xf000 - sc->mem_seg) << 4));
+	vD(ptr) = 0x5AA5C33C;
+	if (vD(ptr) != 0x5AA5C33C) {
+		device_printf(dev, "3rd (BIOS) memory test failed\n");
+		sc->hidewin(sc);
+		goto failed;
+	}
+	DLOG(DIGIDB_INIT, (sc->dev, "3rd memory test ok\n"));
+
+	if ((res = digi_attach(sc)) == 0)
+		return (0);
+
+failed:
+	if (sc->res.mem != NULL) {
+		bus_release_resource(dev, SYS_RES_MEMORY, sc->res.mrid,
+		    sc->res.mem);
+		sc->res.mem = NULL;
+	}
+	if (sc->res.io != NULL) {
+		bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
+		    sc->res.io);
+		sc->res.io = NULL;
+	}
+
+	return (res);
+}
+
+static device_method_t digi_isa_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe, digi_isa_probe),
+	DEVMETHOD(device_attach, digi_isa_attach),
+	DEVMETHOD(device_detach, digi_detach),
+	DEVMETHOD(device_shutdown, digi_shutdown),
+	{0, 0}
+};
+
+static driver_t digi_isa_drv = {
+	"digi",
+	digi_isa_methods,
+	sizeof(struct digi_softc),
+};
+DRIVER_MODULE(digi, isa, digi_isa_drv, digi_devclass, 0, 0);