6b28fe64d3
different ATA channels, required for acard and pc98 ATA controllers, block access to second channels of both, hoping that one working channel is better then none. I have an idea how that support could be implemented, but I have no hardware to work on that. MFC after: 1 week
419 lines
11 KiB
C
419 lines
11 KiB
C
/*-
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* Copyright (c) 2002 - 2008 Søren Schmidt <sos@FreeBSD.org>
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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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* without modification, immediately at the beginning of the file.
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ata.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/ata.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/conf.h>
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#include <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <vm/uma.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <isa/isavar.h>
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#include <dev/ata/ata-all.h>
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#include <ata_if.h>
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/* local vars */
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struct ata_cbus_controller {
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struct resource *io;
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struct resource *ctlio;
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struct resource *bankio;
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struct resource *irq;
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void *ih;
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#ifndef ATA_CAM
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struct mtx bank_mtx;
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int locked_bank;
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int restart_bank;
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int hardware_bank;
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#endif
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int channels;
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struct {
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void (*function)(void *);
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void *argument;
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} interrupt[2];
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};
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/* local prototypes */
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static void ata_cbus_intr(void *);
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#ifndef ATA_CAM
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static int ata_cbuschannel_banking(device_t dev, int flags);
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#endif
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static int
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ata_cbus_probe(device_t dev)
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{
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struct resource *io;
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int rid;
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u_long tmp;
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/* dont probe PnP devices */
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if (isa_get_vendorid(dev))
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return (ENXIO);
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/* allocate the ioport range */
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rid = ATA_IOADDR_RID;
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if (!(io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
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ATA_PC98_IOSIZE, RF_ACTIVE)))
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return ENOMEM;
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/* calculate & set the altport range */
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rid = ATA_PC98_CTLADDR_RID;
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if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
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bus_set_resource(dev, SYS_RES_IOPORT, rid,
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rman_get_start(io)+ATA_PC98_CTLOFFSET, ATA_CTLIOSIZE);
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}
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/* calculate & set the bank range */
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rid = ATA_PC98_BANKADDR_RID;
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if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
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bus_set_resource(dev, SYS_RES_IOPORT, rid,
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ATA_PC98_BANK, ATA_PC98_BANKIOSIZE);
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}
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
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return 0;
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}
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static int
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ata_cbus_attach(device_t dev)
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{
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struct ata_cbus_controller *ctlr = device_get_softc(dev);
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device_t child;
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int rid, unit;
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/* allocate resources */
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rid = ATA_IOADDR_RID;
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if (!(ctlr->io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
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ATA_PC98_IOSIZE, RF_ACTIVE)))
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return ENOMEM;
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rid = ATA_PC98_CTLADDR_RID;
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if (!(ctlr->ctlio =
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bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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rman_get_start(ctlr->io) + ATA_PC98_CTLOFFSET, ~0,
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ATA_CTLIOSIZE, RF_ACTIVE))) {
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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return ENOMEM;
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}
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rid = ATA_PC98_BANKADDR_RID;
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if (!(ctlr->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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ATA_PC98_BANK, ~0,
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ATA_PC98_BANKIOSIZE, RF_ACTIVE))) {
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
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return ENOMEM;
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}
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rid = ATA_IRQ_RID;
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if (!(ctlr->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
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RF_ACTIVE | RF_SHAREABLE))) {
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device_printf(dev, "unable to alloc interrupt\n");
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
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bus_release_resource(dev, SYS_RES_IOPORT,
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ATA_PC98_BANKADDR_RID, ctlr->bankio);
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return ENXIO;
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}
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if ((bus_setup_intr(dev, ctlr->irq, ATA_INTR_FLAGS,
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NULL, ata_cbus_intr, ctlr, &ctlr->ih))) {
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device_printf(dev, "unable to setup interrupt\n");
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, ctlr->io);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_CTLADDR_RID, ctlr->ctlio);
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bus_release_resource(dev, SYS_RES_IOPORT,
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ATA_PC98_BANKADDR_RID, ctlr->bankio);
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bus_release_resource(dev, SYS_RES_IOPORT, ATA_IRQ_RID, ctlr->irq);
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return ENXIO;
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}
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#ifndef ATA_CAM
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ctlr->channels = 2;
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mtx_init(&ctlr->bank_mtx, "ATA cbus bank lock", NULL, MTX_DEF);
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ctlr->hardware_bank = -1;
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ctlr->locked_bank = -1;
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ctlr->restart_bank = -1;
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#else
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/* Work around the lack of channel serialization in ATA_CAM. */
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ctlr->channels = 1;
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device_printf(dev, "second channel ignored\n");
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#endif
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for (unit = 0; unit < ctlr->channels; unit++) {
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child = device_add_child(dev, "ata", unit);
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if (child == NULL)
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device_printf(dev, "failed to add ata child device\n");
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else
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device_set_ivars(child, (void *)(intptr_t)unit);
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}
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bus_generic_attach(dev);
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return (0);
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}
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static struct resource *
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ata_cbus_alloc_resource(device_t dev, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct ata_cbus_controller *ctlr = device_get_softc(dev);
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if (type == SYS_RES_IOPORT) {
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switch (*rid) {
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case ATA_IOADDR_RID:
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return ctlr->io;
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case ATA_CTLADDR_RID:
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return ctlr->ctlio;
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}
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}
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if (type == SYS_RES_IRQ)
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return ctlr->irq;
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return 0;
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}
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static int
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ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq,
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int flags, driver_filter_t *filter, driver_intr_t *intr,
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void *arg, void **cookiep)
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{
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struct ata_cbus_controller *controller = device_get_softc(dev);
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int unit = ((struct ata_channel *)device_get_softc(child))->unit;
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if (filter != NULL) {
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printf("ata-cbus.c: we cannot use a filter here\n");
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return (EINVAL);
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}
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controller->interrupt[unit].function = intr;
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controller->interrupt[unit].argument = arg;
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*cookiep = controller;
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return 0;
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}
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static int
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ata_cbus_print_child(device_t dev, device_t child)
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{
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struct ata_channel *ch = device_get_softc(child);
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int retval = 0;
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retval += bus_print_child_header(dev, child);
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retval += printf(" at bank %d", ch->unit);
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retval += bus_print_child_footer(dev, child);
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return retval;
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}
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static void
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ata_cbus_intr(void *data)
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{
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struct ata_cbus_controller *ctlr = data;
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struct ata_channel *ch;
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int unit;
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for (unit = 0; unit < ctlr->channels; unit++) {
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if (!(ch = ctlr->interrupt[unit].argument))
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continue;
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#ifndef ATA_CAM
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if (ata_cbuschannel_banking(ch->dev, ATA_LF_WHICH) == unit)
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#endif
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ctlr->interrupt[unit].function(ch);
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}
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}
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static device_method_t ata_cbus_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, ata_cbus_probe),
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DEVMETHOD(device_attach, ata_cbus_attach),
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// DEVMETHOD(device_detach, ata_cbus_detach),
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/* bus methods */
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DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource),
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DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr),
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DEVMETHOD(bus_print_child, ata_cbus_print_child),
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DEVMETHOD_END
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};
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static driver_t ata_cbus_driver = {
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"atacbus",
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ata_cbus_methods,
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sizeof(struct ata_cbus_controller),
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};
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static devclass_t ata_cbus_devclass;
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DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, 0, 0);
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static int
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ata_cbuschannel_probe(device_t dev)
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{
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char buffer[32];
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sprintf(buffer, "ATA channel %d", (int)(intptr_t)device_get_ivars(dev));
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device_set_desc_copy(dev, buffer);
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return ata_probe(dev);
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}
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static int
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ata_cbuschannel_attach(device_t dev)
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{
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struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev));
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struct ata_channel *ch = device_get_softc(dev);
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int i;
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if (ch->attached)
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return (0);
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ch->attached = 1;
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ch->unit = (intptr_t)device_get_ivars(dev);
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/* setup the resource vectors */
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for (i = ATA_DATA; i <= ATA_COMMAND; i ++) {
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ch->r_io[i].res = ctlr->io;
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ch->r_io[i].offset = i << 1;
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}
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ch->r_io[ATA_CONTROL].res = ctlr->ctlio;
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ch->r_io[ATA_CONTROL].offset = 0;
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ch->r_io[ATA_IDX_ADDR].res = ctlr->io;
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ata_default_registers(dev);
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/* initialize softc for this channel */
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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_cbuschannel_detach(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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ch->attached = 0;
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return ata_detach(dev);
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}
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static int
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ata_cbuschannel_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_cbuschannel_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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#ifndef ATA_CAM
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static int
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ata_cbuschannel_banking(device_t dev, int flags)
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{
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struct ata_cbus_controller *ctlr = device_get_softc(device_get_parent(dev));
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struct ata_channel *ch = device_get_softc(dev);
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int res;
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mtx_lock(&ctlr->bank_mtx);
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switch (flags) {
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case ATA_LF_LOCK:
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if (ctlr->locked_bank == -1)
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ctlr->locked_bank = ch->unit;
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if (ctlr->locked_bank == ch->unit) {
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ctlr->hardware_bank = ch->unit;
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ATA_OUTB(ctlr->bankio, 0, ch->unit);
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}
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else
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ctlr->restart_bank = ch->unit;
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break;
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case ATA_LF_UNLOCK:
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if (ctlr->locked_bank == ch->unit) {
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ctlr->locked_bank = -1;
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if (ctlr->restart_bank != -1) {
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if ((ch = ctlr->interrupt[ctlr->restart_bank].argument)) {
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ctlr->restart_bank = -1;
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mtx_unlock(&ctlr->bank_mtx);
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ata_start(ch->dev);
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return -1;
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}
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}
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}
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break;
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case ATA_LF_WHICH:
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break;
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}
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res = ctlr->locked_bank;
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mtx_unlock(&ctlr->bank_mtx);
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return res;
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}
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#endif
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static device_method_t ata_cbuschannel_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, ata_cbuschannel_probe),
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DEVMETHOD(device_attach, ata_cbuschannel_attach),
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DEVMETHOD(device_detach, ata_cbuschannel_detach),
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DEVMETHOD(device_suspend, ata_cbuschannel_suspend),
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DEVMETHOD(device_resume, ata_cbuschannel_resume),
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#ifndef ATA_CAM
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/* ATA methods */
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DEVMETHOD(ata_locking, ata_cbuschannel_banking),
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#endif
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DEVMETHOD_END
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};
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static driver_t ata_cbuschannel_driver = {
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"ata",
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ata_cbuschannel_methods,
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sizeof(struct ata_channel),
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};
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DRIVER_MODULE(ata, atacbus, ata_cbuschannel_driver, ata_devclass, NULL, NULL);
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MODULE_DEPEND(ata, ata, 1, 1, 1);
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