Remove Micro Channel Architecture support. Of the commonly available

machines, only a few 486 machines that used it, and those haven't had
enough memory to run FreeBSD for quite some time (often limited to
16MB).

Not to be confused with the Machine Check Architecture, which is still
very much alive and used (and untouched by this commit).

No Objection From: arch@

1 files changed, 0 insertions, 231 deletions

diff --git a/sys/dev/aha/aha_mca.c b/sys/dev/aha/aha_mca.c
deleted file mode 100644
index b954e07774ad..000000000000
--- a/sys/dev/aha/aha_mca.c
+++ /dev/null
@@ -1,231 +0,0 @@
-/*-
- * Copyright (c) 1999 Matthew N. Dodd <winter@jurai.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.
- *
- * 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.
- *
- * Based on aha_isa.c
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/mutex.h>
-
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <sys/rman.h>
-
-#include <isa/isavar.h>
-
-#include <dev/mca/mca_busreg.h>
-#include <dev/mca/mca_busvar.h>
-
-#include <dev/aha/ahareg.h>
-
-static struct mca_ident aha_mca_devs[] = {
-	{ 0x0f1f, "Adaptec AHA-1640 SCSI Adapter" },
-	{ 0, NULL },
-};
-
-#define AHA_MCA_IOPORT_POS		MCA_ADP_POS(MCA_POS1)
-# define AHA_MCA_IOPORT_MASK1		0x07
-# define AHA_MCA_IOPORT_MASK2		0xc0
-# define AHA_MCA_IOPORT_SIZE		0x03
-# define AHA_MCA_IOPORT(pos)		(0x30 + \
-					(((uint32_t)pos & \
-						AHA_MCA_IOPORT_MASK1) << 8) + \
-					(((uint32_t)pos & \
-						AHA_MCA_IOPORT_MASK2) >> 4))
-
-#define AHA_MCA_DRQ_POS			MCA_ADP_POS(MCA_POS3)
-# define AHA_MCA_DRQ_MASK		0x0f
-# define AHA_MCA_DRQ(pos)		(pos & AHA_MCA_DRQ_MASK)
-
-#define AHA_MCA_IRQ_POS			MCA_ADP_POS(MCA_POS2)
-# define AHA_MCA_IRQ_MASK		0x07
-# define AHA_MCA_IRQ(pos)		((pos & AHA_MCA_IRQ_MASK) + 8)
-
-/*
- * Not needed as the board knows its config
- * internally and the ID will be fetched 
- * via AOP_INQUIRE_SETUP_INFO command.
- */
-#define AHA_MCA_SCSIID_POS		MCA_ADP_POS(MCA_POS2)
-#define AHA_MCA_SCSIID_MASK		0xe0
-#define AHA_MCA_SCSIID(pos)		((pos & AHA_MCA_SCSIID_MASK) >> 5)
-
-static int
-aha_mca_probe (device_t dev)
-{
-	const char *	desc;
-	mca_id_t	id = mca_get_id(dev);
-	uint32_t	iobase = 0;
-	uint32_t	iosize = 0;
-	uint8_t		drq = 0;
-	uint8_t		irq = 0;
-	uint8_t		pos;
-
-	desc = mca_match_id(id, aha_mca_devs);
-	if (!desc)
-		return (ENXIO);
-	device_set_desc(dev, desc);
-
-	pos = mca_pos_read(dev, AHA_MCA_IOPORT_POS);
-	iobase = AHA_MCA_IOPORT(pos);
-	iosize = AHA_MCA_IOPORT_SIZE;
-
-	pos = mca_pos_read(dev, AHA_MCA_DRQ_POS);
-	drq = AHA_MCA_DRQ(pos);
-
-	pos = mca_pos_read(dev, AHA_MCA_IRQ_POS);
-	irq = AHA_MCA_IRQ(pos);
-
-	mca_add_iospace(dev, iobase, iosize);
-	mca_add_drq(dev, drq);
-	mca_add_irq(dev, irq);
-
-	return (0);
-}
-
-static int
-aha_mca_attach (device_t dev)
-{
-	struct aha_softc *	sc = device_get_softc(dev);
-	int			error = ENOMEM;
-
-	sc->portrid = 0;
-	sc->port = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
-	    RF_ACTIVE);
-	if (sc->port == NULL) {
-		device_printf(dev, "No I/O space?!\n");
-		goto bad;
-	}
-
-	sc->irqrid = 0;
-	sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
-	    RF_ACTIVE);
-	if (sc->irq == NULL) {
-		device_printf(dev, "No IRQ?!\n");
-		goto bad;
-	}
-
-	sc->drqrid = 0;
-	sc->drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &sc->drqrid,
-	    RF_ACTIVE);
-	if (sc->drq == NULL) {
-		device_printf(dev, "No DRQ?!\n");
-		goto bad;
-	}
-
-	aha_alloc(sc);
-	error = aha_probe(sc);
-	if (error) {
-		device_printf(dev, "aha_probe() failed!\n");
-		goto bad;
-	}
-
-	error = aha_fetch_adapter_info(sc);
-	if (error) {
-		device_printf(dev, "aha_fetch_adapter_info() failed!\n");
-		goto bad;
-	}
-
-	isa_dmacascade(rman_get_start(sc->drq));
-
-	error = bus_dma_tag_create(
-				/* parent	*/ bus_get_dma_tag(dev),
-				/* alignemnt	*/ 1,
-				/* boundary	*/ 0,
-				/* lowaddr	*/ BUS_SPACE_MAXADDR_24BIT,
-				/* highaddr	*/ BUS_SPACE_MAXADDR,
-				/* filter	*/ NULL,
-				/* filterarg	*/ NULL,
-				/* maxsize	*/ BUS_SPACE_MAXSIZE_24BIT,
-				/* nsegments	*/ ~0,
-				/* maxsegsz	*/ BUS_SPACE_MAXSIZE_24BIT,
-				/* flags	*/ 0,
-				/* lockfunc	*/ NULL,
-				/* lockarg	*/ NULL,
-				&sc->parent_dmat);
-	if (error) {
-		device_printf(dev, "bus_dma_tag_create() failed!\n");
-		goto bad;
-	}			      
-
-	error = aha_init(sc);
-	if (error) {
-		device_printf(dev, "aha_init() failed\n");
-		goto bad;
-	}
-
-	error = aha_attach(sc);
-	if (error) {
-		device_printf(dev, "aha_attach() failed\n");
-		goto bad;
-	}
-
-	error = bus_setup_intr(dev, sc->irq, INTR_TYPE_CAM | INTR_ENTROPY |
-	    INTR_MPSAFE, NULL, aha_intr, sc, &sc->ih);
-	if (error) {
-		device_printf(dev, "Unable to register interrupt handler\n");
-		aha_detach(sc);
-		goto bad;
-	}
-
-	return (0);
-
-bad:
-	aha_free(sc);
-	bus_free_resource(dev, SYS_RES_IOPORT, sc->port);
-	bus_free_resource(dev, SYS_RES_IRQ, sc->irq);
-	bus_free_resource(dev, SYS_RES_DRQ, sc->drq);
-	return (error);
-}
-
-static device_method_t aha_mca_methods[] = {
-	DEVMETHOD(device_probe,         aha_mca_probe),
-	DEVMETHOD(device_attach,        aha_mca_attach),
-
-	{ 0, 0 }
-};
-
-static driver_t aha_mca_driver = {
-	"aha",
-	aha_mca_methods,
-	1,
-/*
-	sizeof(struct aha_softc *),
- */
-};
-
-static devclass_t aha_devclass;
-
-DRIVER_MODULE(aha, mca, aha_mca_driver, aha_devclass, 0, 0);
-MODULE_DEPEND(aha, mca, 1, 1, 1);