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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/usb/cdce/@/powerpc/psim/ata_iobus.c |
/*-
* 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.
*
* $FreeBSD: release/9.1.0/sys/powerpc/psim/ata_iobus.c 200182 2009-12-06 17:26:43Z nwhitehorn $
*/
/*
* PSIM local bus ATA controller
*/
#include "opt_ata.h"
#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 *,
u_long, u_long, u_long, 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),
{ 0, 0 }
};
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, 0, 0);
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,
u_long start, u_long end, u_long 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),
{ 0, 0 }
};
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, 0, 0);
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);
}