ca3d37955c
- Retire IVARs for passing IRQs around. Instead, ppbus and ppc now allow child devices to access the interrupt by via a rid 0 IRQ resource using bus_alloc_resource_any(). - ppc creates its own interrupt event to manage the interrupt handlers of child devices. ppc does not allow child devices to use filters. It could allow this if needed, but none of the current drivers use them and it adds a good bit of complication. It uses intr_event_execute_handlers() to fire the child device interrupt handlers from its threaded interrupt handler. - Remove the ppbus_dummy_intr() hack. Now the ppc device always has an interrupt handler registered and we no longer bounce all the way up to nexus to manage adding/removing ppbus child interrupt handlers. Instead, the child handlers are added and removed to the private interrupt event in the ppc device.
98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
/*-
|
|
* Copyright (c) 2006 Marcel Moolenaar
|
|
* Copyright (c) 1997-2000 Nicolas Souchu
|
|
* Copyright (c) 2001 Alcove - Nicolas Souchu
|
|
* 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/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/puc/puc_bus.h>
|
|
|
|
#include <dev/ppbus/ppbconf.h>
|
|
#include <dev/ppbus/ppb_msq.h>
|
|
#include <dev/ppc/ppcvar.h>
|
|
#include <dev/ppc/ppcreg.h>
|
|
|
|
#include "ppbus_if.h"
|
|
|
|
static int ppc_puc_probe(device_t dev);
|
|
|
|
static device_method_t ppc_puc_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, ppc_puc_probe),
|
|
DEVMETHOD(device_attach, ppc_attach),
|
|
DEVMETHOD(device_detach, ppc_detach),
|
|
|
|
/* bus interface */
|
|
DEVMETHOD(bus_read_ivar, ppc_read_ivar),
|
|
DEVMETHOD(bus_setup_intr, ppc_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, ppc_teardown_intr),
|
|
DEVMETHOD(bus_alloc_resource, ppc_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, ppc_release_resource),
|
|
|
|
/* ppbus interface */
|
|
DEVMETHOD(ppbus_io, ppc_io),
|
|
DEVMETHOD(ppbus_exec_microseq, ppc_exec_microseq),
|
|
DEVMETHOD(ppbus_reset_epp, ppc_reset_epp),
|
|
DEVMETHOD(ppbus_setmode, ppc_setmode),
|
|
DEVMETHOD(ppbus_ecp_sync, ppc_ecp_sync),
|
|
DEVMETHOD(ppbus_read, ppc_read),
|
|
DEVMETHOD(ppbus_write, ppc_write),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t ppc_puc_driver = {
|
|
ppc_driver_name,
|
|
ppc_puc_methods,
|
|
sizeof(struct ppc_data),
|
|
};
|
|
|
|
static int
|
|
ppc_puc_probe(device_t dev)
|
|
{
|
|
device_t parent;
|
|
uintptr_t type;
|
|
|
|
parent = device_get_parent(dev);
|
|
if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type))
|
|
return (ENXIO);
|
|
if (type != PUC_TYPE_PARALLEL)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "Parallel port");
|
|
return (ppc_probe(dev, 0));
|
|
}
|
|
|
|
DRIVER_MODULE(ppc, puc, ppc_puc_driver, ppc_devclass, 0, 0);
|