freebsd-dev/sys/dev/ata/ata-cbus.c
Søren Schmidt 610e02649a Dont probe PnP devices.
Submitted by: Takahashi Yoshihiro <nyan@FreeBSD.org>
2003-01-09 14:00:07 +00:00

268 lines
7.5 KiB
C

/*-
* Copyright (c) 2002 Søren Schmidt <sos@FreeBSD.org>
* 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,
* without modification, immediately at the beginning of the file.
* 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.
*
* $FreeBSD$
*/
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <dev/ata/ata-all.h>
/* local vars */
static bus_addr_t ata_pc98_ports[] = {
0x0, 0x2, 0x4, 0x6, 0x8, 0xa, 0xc, 0xe
};
struct ata_cbus_controller {
struct resource *io;
struct resource *altio;
struct resource *bankio;
struct resource *irq;
int current_bank;
};
static int
ata_cbus_probe(device_t dev)
{
struct resource *io;
int rid;
u_long tmp;
/* dont probe PnP devices */
if (isa_get_vendorid(dev))
return (ENXIO);
/* allocate the ioport range */
rid = ATA_IOADDR_RID;
io = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, ata_pc98_ports,
ATA_IOSIZE, RF_ACTIVE);
if (!io)
return ENOMEM;
isa_load_resourcev(io, ata_pc98_ports, ATA_IOSIZE);
/* calculate & set the altport range */
rid = ATA_PC98_ALTADDR_RID;
if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
bus_set_resource(dev, SYS_RES_IOPORT, rid,
rman_get_start(io)+ATA_PC98_ALTOFFSET, ATA_ALTIOSIZE);
}
/* calculate & set the bank range */
rid = ATA_PC98_BANKADDR_RID;
if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &tmp, &tmp)) {
bus_set_resource(dev, SYS_RES_IOPORT, rid,
ATA_PC98_BANK, ATA_PC98_BANKIOSIZE);
}
bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, io);
return 0;
}
static int
ata_cbus_attach(device_t dev)
{
struct ata_cbus_controller *scp = device_get_softc(dev);
int rid;
/* allocate resources */
rid = ATA_IOADDR_RID;
scp->io = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid, ata_pc98_ports,
ATA_IOSIZE, RF_ACTIVE);
if (!scp->io)
return ENOMEM;
isa_load_resourcev(scp->io, ata_pc98_ports, ATA_IOSIZE);
rid = ATA_PC98_ALTADDR_RID;
scp->altio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
rman_get_start(scp->io)+ATA_PC98_ALTOFFSET,
~0, ATA_ALTIOSIZE, RF_ACTIVE);
if (!scp->altio)
return ENOMEM;
rid = ATA_PC98_BANKADDR_RID;
scp->bankio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
ATA_PC98_BANK, ~0,
ATA_PC98_BANKIOSIZE, RF_ACTIVE);
if (!scp->bankio)
return ENOMEM;
rid = 0;
scp->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
scp->current_bank = -1;
if (!device_add_child(dev, "ata", 0))
return ENOMEM;
if (!device_add_child(dev, "ata", 1))
return ENOMEM;
return bus_generic_attach(dev);
}
static struct resource *
ata_cbus_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 ata_cbus_controller *scp = device_get_softc(dev);
if (type == SYS_RES_IOPORT) {
switch (*rid) {
case ATA_IOADDR_RID:
return scp->io;
case ATA_ALTADDR_RID:
return scp->altio;
}
}
if (type == SYS_RES_IRQ) {
return scp->irq;
}
return 0;
}
static int
ata_cbus_setup_intr(device_t dev, device_t child, struct resource *irq,
int flags, driver_intr_t *intr, void *arg,
void **cookiep)
{
return BUS_SETUP_INTR(device_get_parent(dev), dev, irq,
flags, intr, arg, cookiep);
}
static int
ata_cbus_print_child(device_t dev, device_t child)
{
struct ata_channel *ch = device_get_softc(child);
int retval = 0;
retval += bus_print_child_header(dev, child);
retval += printf(" at bank %d", ch->unit);
retval += bus_print_child_footer(dev, child);
return retval;
}
static int
ata_cbus_intr(struct ata_channel *ch)
{
struct ata_cbus_controller *scp =
device_get_softc(device_get_parent(ch->dev));
return (ch->unit == scp->current_bank);
}
static void
ata_cbus_banking(struct ata_channel *ch, int flags)
{
struct ata_cbus_controller *scp =
device_get_softc(device_get_parent(ch->dev));
switch (flags) {
case ATA_LF_LOCK:
if (scp->current_bank == ch->unit)
break;
while (!atomic_cmpset_acq_int(&scp->current_bank, -1, ch->unit))
tsleep((caddr_t)ch->lock_func, PRIBIO, "atalck", 1);
bus_space_write_1(rman_get_bustag(scp->bankio),
rman_get_bushandle(scp->bankio), 0, ch->unit);
break;
case ATA_LF_UNLOCK:
if (scp->current_bank == -1 || scp->current_bank != ch->unit)
break;
atomic_store_rel_int(&scp->current_bank, -1);
break;
}
return;
}
static device_method_t ata_cbus_methods[] = {
/* device_interface */
DEVMETHOD(device_probe, ata_cbus_probe),
DEVMETHOD(device_attach, ata_cbus_attach),
/* bus methods */
DEVMETHOD(bus_alloc_resource, ata_cbus_alloc_resource),
DEVMETHOD(bus_setup_intr, ata_cbus_setup_intr),
DEVMETHOD(bus_print_child, ata_cbus_print_child),
{ 0, 0 }
};
static driver_t ata_cbus_driver = {
"atacbus",
ata_cbus_methods,
sizeof(struct ata_cbus_controller),
};
static devclass_t ata_cbus_devclass;
DRIVER_MODULE(atacbus, isa, ata_cbus_driver, ata_cbus_devclass, 0, 0);
static int
ata_cbussub_probe(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
device_t *children;
int count, i;
/* find channel number on this controller */
device_get_children(device_get_parent(dev), &children, &count);
for (i = 0; i < count; i++) {
if (children[i] == dev)
ch->unit = i;
}
free(children, M_TEMP);
ch->flags |= ATA_USE_16BIT | ATA_USE_PC98GEOM;
ch->intr_func = ata_cbus_intr;
ch->lock_func = ata_cbus_banking;
return ata_probe(dev);
}
static device_method_t ata_cbussub_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ata_cbussub_probe),
DEVMETHOD(device_attach, ata_attach),
DEVMETHOD(device_detach, ata_detach),
DEVMETHOD(device_resume, ata_resume),
{ 0, 0 }
};
static driver_t ata_cbussub_driver = {
"ata",
ata_cbussub_methods,
sizeof(struct ata_channel),
};
DRIVER_MODULE(ata, atacbus, ata_cbussub_driver, ata_devclass, 0, 0);