171 lines
4.3 KiB
C
171 lines
4.3 KiB
C
/*-
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* Copyright (c) 2009 Neelkanth Natu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <machine/bus.h>
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#include <vm/uma.h>
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#include <sys/ata.h>
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#include <dev/ata/ata-all.h>
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#include <machine/resource.h>
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__FBSDID("$FreeBSD$");
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static int
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ata_zbbus_probe(device_t dev)
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{
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return (ata_probe(dev));
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}
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static int
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ata_zbbus_attach(device_t dev)
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{
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int i, rid, regshift, regoffset;
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struct ata_channel *ch;
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struct resource *io;
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ch = device_get_softc(dev);
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if (ch->attached)
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return (0);
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ch->attached = 1;
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rid = 0;
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io = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE);
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if (io == NULL)
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return (ENXIO);
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/*
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* SWARM needs an address shift of 5 when accessing ATA registers.
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*
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* For e.g. an access to register 4 actually needs an address
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* of (4 << 5) to be output on the generic bus.
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*/
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regshift = 5;
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resource_int_value(device_get_name(dev), device_get_unit(dev),
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"regshift", ®shift);
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if (regshift && bootverbose)
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device_printf(dev, "using a register shift of %d\n", regshift);
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regoffset = 0x1F0;
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resource_int_value(device_get_name(dev), device_get_unit(dev),
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"regoffset", ®offset);
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if (regoffset && bootverbose) {
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device_printf(dev, "using a register offset of 0x%0x\n",
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regoffset);
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}
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/* setup the ata register addresses */
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for (i = ATA_DATA; i <= ATA_COMMAND; ++i) {
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ch->r_io[i].res = io;
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ch->r_io[i].offset = (regoffset + i) << regshift;
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}
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ch->r_io[ATA_CONTROL].res = io;
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ch->r_io[ATA_CONTROL].offset = (regoffset + ATA_CTLOFFSET) << regshift;
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ch->r_io[ATA_IDX_ADDR].res = io; /* XXX what is this used for */
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ata_default_registers(dev);
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/* initialize softc for this channel */
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ch->unit = 0;
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ch->flags |= ATA_USE_16BIT;
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ata_generic_hw(dev);
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return (ata_attach(dev));
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}
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static int
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ata_zbbus_detach(device_t dev)
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{
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int error;
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struct ata_channel *ch = device_get_softc(dev);
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if (!ch->attached)
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return (0);
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ch->attached = 0;
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error = ata_detach(dev);
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bus_release_resource(dev, SYS_RES_MEMORY, 0,
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ch->r_io[ATA_IDX_ADDR].res);
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return (error);
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}
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static int
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ata_zbbus_suspend(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(dev);
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if (!ch->attached)
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return (0);
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return (ata_suspend(dev));
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}
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static int
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ata_zbbus_resume(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(dev);
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if (!ch->attached)
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return (0);
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return (ata_resume(dev));
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}
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static device_method_t ata_zbbus_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, ata_zbbus_probe),
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DEVMETHOD(device_attach, ata_zbbus_attach),
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DEVMETHOD(device_detach, ata_zbbus_detach),
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DEVMETHOD(device_suspend, ata_zbbus_suspend),
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DEVMETHOD(device_resume, ata_zbbus_resume),
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{ 0, 0 }
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};
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static driver_t ata_zbbus_driver = {
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"ata",
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ata_zbbus_methods,
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sizeof(struct ata_channel)
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};
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DRIVER_MODULE(ata, zbbus, ata_zbbus_driver, ata_devclass, 0, 0);
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