268 lines
7.5 KiB
C
268 lines
7.5 KiB
C
/*-
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* Copyright (c) 2002 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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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* $FreeBSD$
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*/
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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/bus.h>
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#include <sys/malloc.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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/* local vars */
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static bus_addr_t ata_pc98_ports[] = {
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0x0, 0x2, 0x4, 0x6, 0x8, 0xa, 0xc, 0xe
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};
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struct ata_cbus_controller {
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struct resource *io;
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struct resource *altio;
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struct resource *bankio;
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struct resource *irq;
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int current_bank;
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};
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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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io = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, ata_pc98_ports,
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ATA_IOSIZE, RF_ACTIVE);
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if (!io)
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return ENOMEM;
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isa_load_resourcev(io, ata_pc98_ports, ATA_IOSIZE);
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/* calculate & set the altport range */
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rid = ATA_PC98_ALTADDR_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_ALTOFFSET, ATA_ALTIOSIZE);
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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 *scp = device_get_softc(dev);
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int rid;
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/* allocate resources */
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rid = ATA_IOADDR_RID;
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scp->io = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, ata_pc98_ports,
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ATA_IOSIZE, RF_ACTIVE);
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if (!scp->io)
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return ENOMEM;
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isa_load_resourcev(scp->io, ata_pc98_ports, ATA_IOSIZE);
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rid = ATA_PC98_ALTADDR_RID;
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scp->altio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
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rman_get_start(scp->io)+ATA_PC98_ALTOFFSET,
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~0, ATA_ALTIOSIZE, RF_ACTIVE);
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if (!scp->altio)
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return ENOMEM;
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rid = ATA_PC98_BANKADDR_RID;
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scp->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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if (!scp->bankio)
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return ENOMEM;
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rid = 0;
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scp->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
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0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
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scp->current_bank = -1;
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if (!device_add_child(dev, "ata", 0))
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return ENOMEM;
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if (!device_add_child(dev, "ata", 1))
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return ENOMEM;
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return bus_generic_attach(dev);
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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 *scp = 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 scp->io;
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case ATA_ALTADDR_RID:
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return scp->altio;
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}
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}
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if (type == SYS_RES_IRQ) {
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return scp->irq;
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}
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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_intr_t *intr, void *arg,
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void **cookiep)
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{
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return BUS_SETUP_INTR(device_get_parent(dev), dev, irq,
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flags, intr, arg, cookiep);
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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 int
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ata_cbus_intr(struct ata_channel *ch)
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{
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struct ata_cbus_controller *scp =
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device_get_softc(device_get_parent(ch->dev));
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return (ch->unit == scp->current_bank);
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}
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static void
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ata_cbus_banking(struct ata_channel *ch, int flags)
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{
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struct ata_cbus_controller *scp =
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device_get_softc(device_get_parent(ch->dev));
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switch (flags) {
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case ATA_LF_LOCK:
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if (scp->current_bank == ch->unit)
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break;
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while (!atomic_cmpset_acq_int(&scp->current_bank, -1, ch->unit))
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tsleep((caddr_t)ch->lock_func, PRIBIO, "atalck", 1);
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bus_space_write_1(rman_get_bustag(scp->bankio),
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rman_get_bushandle(scp->bankio), 0, ch->unit);
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break;
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case ATA_LF_UNLOCK:
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if (scp->current_bank == -1 || scp->current_bank != ch->unit)
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break;
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atomic_store_rel_int(&scp->current_bank, -1);
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break;
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}
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return;
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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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/* 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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{ 0, 0 }
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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_cbussub_probe(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(dev);
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device_t *children;
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int count, i;
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/* find channel number on this controller */
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device_get_children(device_get_parent(dev), &children, &count);
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for (i = 0; i < count; i++) {
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if (children[i] == dev)
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ch->unit = i;
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}
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free(children, M_TEMP);
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ch->flags |= ATA_USE_16BIT | ATA_USE_PC98GEOM;
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ch->intr_func = ata_cbus_intr;
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ch->lock_func = ata_cbus_banking;
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return ata_probe(dev);
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}
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static device_method_t ata_cbussub_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, ata_cbussub_probe),
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DEVMETHOD(device_attach, ata_attach),
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DEVMETHOD(device_detach, ata_detach),
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DEVMETHOD(device_resume, ata_resume),
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{ 0, 0 }
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};
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static driver_t ata_cbussub_driver = {
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"ata",
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ata_cbussub_methods,
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sizeof(struct ata_channel),
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};
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DRIVER_MODULE(ata, atacbus, ata_cbussub_driver, ata_devclass, 0, 0);
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