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- /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright 2002 by Peter Grehan. 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>
- __FBSDID("$FreeBSD$");
- /*
- * PSIM local bus ATA controller
- */
- #include <sys/param.h>
- #include <sys/systm.h>
- #include <sys/kernel.h>
- #include <sys/module.h>
- #include <sys/bus.h>
- #include <sys/malloc.h>
- #include <sys/sema.h>
- #include <sys/taskqueue.h>
- #include <machine/stdarg.h>
- #include <vm/uma.h>
- #include <machine/resource.h>
- #include <machine/bus.h>
- #include <sys/rman.h>
- #include <sys/ata.h>
- #include <dev/ata/ata-all.h>
- #include <ata_if.h>
- #include <dev/ofw/openfirm.h>
- #include <powerpc/psim/iobusvar.h>
- /*
- * Define the iobus ata bus attachment. This creates a pseudo-bus that
- * the ATA device can be attached to
- */
- static int ata_iobus_attach(device_t dev);
- static int ata_iobus_probe(device_t dev);
- static int ata_iobus_print_child(device_t dev, device_t child);
- struct resource *ata_iobus_alloc_resource(device_t, device_t, int, int *,
- rman_res_t, rman_res_t, rman_res_t,
- u_int);
- static int ata_iobus_release_resource(device_t, device_t, int, int,
- struct resource *);
- static device_method_t ata_iobus_methods[] = {
- /* Device interface */
- DEVMETHOD(device_probe, ata_iobus_probe),
- DEVMETHOD(device_attach, ata_iobus_attach),
- DEVMETHOD(device_shutdown, bus_generic_shutdown),
- DEVMETHOD(device_suspend, bus_generic_suspend),
- DEVMETHOD(device_resume, bus_generic_resume),
- /* Bus methods */
- DEVMETHOD(bus_print_child, ata_iobus_print_child),
- DEVMETHOD(bus_alloc_resource, ata_iobus_alloc_resource),
- DEVMETHOD(bus_release_resource, ata_iobus_release_resource),
- DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
- DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
- DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
- DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
- DEVMETHOD_END
- };
- static driver_t ata_iobus_driver = {
- "ataiobus",
- ata_iobus_methods,
- 0,
- };
- static devclass_t ata_iobus_devclass;
- DRIVER_MODULE(ataiobus, iobus, ata_iobus_driver, ata_iobus_devclass, NULL,
- NULL);
- MODULE_DEPEND(ata, ata, 1, 1, 1);
- static int
- ata_iobus_probe(device_t dev)
- {
- char *type = iobus_get_name(dev);
- if (strncmp(type, "ata", 3) != 0)
- return (ENXIO);
- device_set_desc(dev, "PSIM ATA Controller");
- return (0);
- }
- static int
- ata_iobus_attach(device_t dev)
- {
- /*
- * Add a single child per controller. Should be able
- * to add two
- */
- device_add_child(dev, "ata", -1);
- return (bus_generic_attach(dev));
- }
- static int
- ata_iobus_print_child(device_t dev, device_t child)
- {
- int retval = 0;
- retval += bus_print_child_header(dev, child);
- /* irq ? */
- retval += bus_print_child_footer(dev, child);
- return (retval);
- }
- struct resource *
- ata_iobus_alloc_resource(device_t dev, device_t child, int type, int *rid,
- rman_res_t start, rman_res_t end, rman_res_t count,
- u_int flags)
- {
- struct resource *res = NULL;
- int myrid;
- u_int *ofw_regs;
- ofw_regs = iobus_get_regs(dev);
- /*
- * The reg array for the PSIM ata device has 6 start/size entries:
- * 0 - unused
- * 1/2/3 - unused
- * 4/5/6 - primary command
- * 7/8/9 - secondary command
- * 10/11/12 - primary control
- * 13/14/15 - secondary control
- * 16/17/18 - primary/secondary dma registers, unimplemented
- *
- * The resource values are calculated from these registers
- */
- if (type == SYS_RES_IOPORT) {
- switch (*rid) {
- case ATA_IOADDR_RID:
- myrid = 0;
- start = ofw_regs[4];
- end = start + ATA_IOSIZE - 1;
- count = ATA_IOSIZE;
- res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
- SYS_RES_MEMORY, &myrid,
- start, end, count, flags);
- break;
- case ATA_CTLADDR_RID:
- myrid = 0;
- start = ofw_regs[10];
- end = start + ATA_CTLIOSIZE - 1;
- count = ATA_CTLIOSIZE;
- res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
- SYS_RES_MEMORY, &myrid,
- start, end, count, flags);
- break;
- case ATA_BMADDR_RID:
- /* DMA not properly supported by psim */
- break;
- }
- return (res);
- } else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) {
- /*
- * Pass this on to the parent
- */
- return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
- SYS_RES_IRQ, rid, 0, ~0, 1, flags));
- } else {
- return (NULL);
- }
- }
- static int
- ata_iobus_release_resource(device_t dev, device_t child, int type, int rid,
- struct resource *r)
- {
- /* no hotplug... */
- return (0);
- }
- /*
- * Define the actual ATA device. This is a sub-bus to the ata-iobus layer
- * to allow the higher layer bus to massage the resource allocation.
- */
- static int ata_iobus_sub_probe(device_t dev);
- static int ata_iobus_sub_setmode(device_t dev, int target, int mode);
- static device_method_t ata_iobus_sub_methods[] = {
- /* Device interface */
- DEVMETHOD(device_probe, ata_iobus_sub_probe),
- DEVMETHOD(device_attach, ata_attach),
- DEVMETHOD(device_detach, ata_detach),
- DEVMETHOD(device_resume, ata_resume),
- /* ATA interface */
- DEVMETHOD(ata_setmode, ata_iobus_sub_setmode),
- DEVMETHOD_END
- };
- static driver_t ata_iobus_sub_driver = {
- "ata",
- ata_iobus_sub_methods,
- sizeof(struct ata_channel),
- };
- DRIVER_MODULE(ata, ataiobus, ata_iobus_sub_driver, ata_devclass, NULL, NULL);
- static int
- ata_iobus_sub_probe(device_t dev)
- {
- struct ata_channel *ch = device_get_softc(dev);
- /* Only a single unit per controller thus far */
- ch->unit = 0;
- ch->flags = (ATA_USE_16BIT|ATA_NO_SLAVE);
- ata_generic_hw(dev);
- return ata_probe(dev);
- }
- static int
- ata_iobus_sub_setmode(device_t parent, int target, int mode)
- {
- /* Only ever PIO mode here... */
- return (ATA_PIO);
- }
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