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/*-
* Copyright (c) 2009 Neelkanth Natu
* 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.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <machine/bus.h>
#include <vm/uma.h>
#include <sys/ata.h>
#include <dev/ata/ata-all.h>
#include <machine/resource.h>
__FBSDID("$FreeBSD$");
static int
ata_zbbus_probe(device_t dev)
{
return (ata_probe(dev));
}
static int
ata_zbbus_attach(device_t dev)
{
int i, rid, regshift, regoffset;
struct ata_channel *ch;
struct resource *io;
ch = device_get_softc(dev);
if (ch->attached)
return (0);
ch->attached = 1;
rid = 0;
io = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE);
if (io == NULL)
return (ENXIO);
/*
* SWARM needs an address shift of 5 when accessing ATA registers.
*
* For e.g. an access to register 4 actually needs an address
* of (4 << 5) to be output on the generic bus.
*/
regshift = 5;
resource_int_value(device_get_name(dev), device_get_unit(dev),
"regshift", ®shift);
if (regshift && bootverbose)
device_printf(dev, "using a register shift of %d\n", regshift);
regoffset = 0x1F0;
resource_int_value(device_get_name(dev), device_get_unit(dev),
"regoffset", ®offset);
if (regoffset && bootverbose) {
device_printf(dev, "using a register offset of 0x%0x\n",
regoffset);
}
/* setup the ata register addresses */
for (i = ATA_DATA; i <= ATA_COMMAND; ++i) {
ch->r_io[i].res = io;
ch->r_io[i].offset = (regoffset + i) << regshift;
}
ch->r_io[ATA_CONTROL].res = io;
ch->r_io[ATA_CONTROL].offset = (regoffset + ATA_CTLOFFSET) << regshift;
ch->r_io[ATA_IDX_ADDR].res = io; /* XXX what is this used for */
ata_default_registers(dev);
/* initialize softc for this channel */
ch->unit = 0;
ch->flags |= ATA_USE_16BIT;
ata_generic_hw(dev);
return (ata_attach(dev));
}
static int
ata_zbbus_detach(device_t dev)
{
int error;
struct ata_channel *ch = device_get_softc(dev);
if (!ch->attached)
return (0);
ch->attached = 0;
error = ata_detach(dev);
bus_release_resource(dev, SYS_RES_MEMORY, 0,
ch->r_io[ATA_IDX_ADDR].res);
return (error);
}
static int
ata_zbbus_suspend(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
if (!ch->attached)
return (0);
return (ata_suspend(dev));
}
static int
ata_zbbus_resume(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
if (!ch->attached)
return (0);
return (ata_resume(dev));
}
static device_method_t ata_zbbus_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ata_zbbus_probe),
DEVMETHOD(device_attach, ata_zbbus_attach),
DEVMETHOD(device_detach, ata_zbbus_detach),
DEVMETHOD(device_suspend, ata_zbbus_suspend),
DEVMETHOD(device_resume, ata_zbbus_resume),
{ 0, 0 }
};
static driver_t ata_zbbus_driver = {
"ata",
ata_zbbus_methods,
sizeof(struct ata_channel)
};
DRIVER_MODULE(ata, zbbus, ata_zbbus_driver, ata_devclass, 0, 0);
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