Break out the isa and pccard front ends from fdc. This is the first

step in making this driver more attachment neutral.  Others plan on
adding acpi front ends.

Still need to cleanup the MI part of the driver because it isn't as
bus independent as it could be.

1 files changed, 145 insertions, 0 deletions

diff --git a/sys/dev/fdc/fdc_isa.c b/sys/dev/fdc/fdc_isa.c
new file mode 100644
index 0000000..e519bee
--- /dev/null
+++ b/sys/dev/fdc/fdc_isa.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2004 M. Warner Losh.
+ * 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,
+ *    without modification, immediately at the beginning of the file.
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bio.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <sys/systm.h>
+
+#include <dev/fdc/fdcvar.h>
+#include <dev/fdc/fdcreg.h>
+
+#include <isa/isavar.h>
+#include <isa/isareg.h>
+
+static int fdc_isa_probe(device_t);
+static void fdctl_wr_isa(fdc_p, u_int8_t);
+
+static struct isa_pnp_id fdc_ids[] = {
+	{0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */
+	{0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */
+	{0}
+};
+
+static void
+fdctl_wr_isa(fdc_p fdc, u_int8_t v)
+{
+	bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v);
+}
+
+static int
+fdc_isa_probe(device_t dev)
+{
+	int	error, ic_type;
+	struct	fdc_data *fdc;
+
+	fdc = device_get_softc(dev);
+	bzero(fdc, sizeof *fdc);
+	fdc->fdc_dev = dev;
+	fdc->fdctl_wr = fdctl_wr_isa;
+
+	/* Check pnp ids */
+	error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids);
+	if (error == ENXIO)
+		return ENXIO;
+	if (error == 0)
+		fdc->flags |= FDC_ISPNP;
+
+	/* Attempt to allocate our resources for the duration of the probe */
+	error = fdc_alloc_resources(fdc);
+	if (error)
+		goto out;
+
+	/* First - lets reset the floppy controller */
+	fdout_wr(fdc, 0);
+	DELAY(100);
+	fdout_wr(fdc, FDO_FRST);
+
+	/* see if it can handle a command */
+	if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 
+		   NE7_SPEC_2(2, 0), 0)) {
+		error = ENXIO;
+		goto out;
+	}
+
+	if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) {
+		ic_type = (u_char)ic_type;
+		switch (ic_type) {
+		case 0x80:
+			device_set_desc(dev, "NEC 765 or clone");
+			fdc->fdct = FDC_NE765;
+			break;
+		case 0x81:	/* not mentioned in any hardware doc */
+		case 0x90:
+			device_set_desc(dev,
+		"Enhanced floppy controller (i82077, NE72065 or clone)");
+			fdc->fdct = FDC_ENHANCED;
+			break;
+		default:
+			device_set_desc(dev, "Generic floppy controller");
+			fdc->fdct = FDC_UNKNOWN;
+			break;
+		}
+	}
+
+out:
+	fdc_release_resources(fdc);
+	return (error);
+}
+
+static device_method_t fdc_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		fdc_isa_probe),
+	DEVMETHOD(device_attach,	fdc_attach),
+	DEVMETHOD(device_detach,	fdc_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	DEVMETHOD(device_suspend,	bus_generic_suspend),
+	DEVMETHOD(device_resume,	bus_generic_resume),
+
+	/* Bus interface */
+	DEVMETHOD(bus_print_child,	fdc_print_child),
+	DEVMETHOD(bus_read_ivar,	fdc_read_ivar),
+	/* Our children never use any other bus interface methods. */
+
+	{ 0, 0 }
+};
+
+static driver_t fdc_driver = {
+	"fdc",
+	fdc_methods,
+	sizeof(struct fdc_data)
+};
+
+DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0);
+DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0);