NetBSD-5.0.2/sys/dev/ppbus/ppbus_conf.c
/* $NetBSD: ppbus_conf.c,v 1.16 2008/04/29 14:07:37 cegger Exp $ */
/*-
* Copyright (c) 1997, 1998, 1999 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.
*
* FreeBSD: src/sys/dev/ppbus/ppbconf.c,v 1.17.2.1 2000/05/24 00:20:57 n_hibma Exp
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ppbus_conf.c,v 1.16 2008/04/29 14:07:37 cegger Exp $");
#include "opt_ppbus.h"
#include "opt_ppbus_1284.h"
#include "gpio.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <dev/ppbus/ppbus_1284.h>
#include <dev/ppbus/ppbus_base.h>
#include <dev/ppbus/ppbus_conf.h>
#include <dev/ppbus/ppbus_device.h>
#include <dev/ppbus/ppbus_var.h>
/* Probe, attach, and detach functions for ppbus. */
static int ppbus_probe(device_t, cfdata_t, void *);
static void ppbus_attach(device_t, device_t, void *);
static int ppbus_detach(device_t, int);
/* Utility function prototypes */
static int ppbus_search_children(device_t, cfdata_t,
const int *, void *);
CFATTACH_DECL_NEW(ppbus, sizeof(struct ppbus_softc), ppbus_probe, ppbus_attach,
ppbus_detach, NULL);
/* Probe function for ppbus. */
static int
ppbus_probe(device_t parent, cfdata_t cf, void *aux)
{
struct parport_adapter *sc_link = aux;
/* Check adapter for consistency */
if (
/* Required methods for all parports */
sc_link->parport_io == NULL ||
sc_link->parport_exec_microseq == NULL ||
sc_link->parport_setmode == NULL ||
sc_link->parport_getmode == NULL ||
sc_link->parport_read == NULL ||
sc_link->parport_write == NULL ||
sc_link->parport_read_ivar == NULL ||
sc_link->parport_write_ivar == NULL ||
/* Methods which conditional exist based on capabilities */
((sc_link->capabilities & PPBUS_HAS_EPP) &&
(sc_link->parport_reset_epp_timeout == NULL)) ||
((sc_link->capabilities & PPBUS_HAS_ECP) &&
(sc_link->parport_ecp_sync == NULL)) ||
((sc_link->capabilities & PPBUS_HAS_DMA) &&
(sc_link->parport_dma_malloc == NULL ||
sc_link->parport_dma_free == NULL)) ||
((sc_link->capabilities & PPBUS_HAS_INTR) &&
(sc_link->parport_add_handler == NULL ||
sc_link->parport_remove_handler == NULL))
) {
#ifdef PPBUS_DEBUG
printf("%s(%s): parport_adaptor is incomplete. Child device "
"probe failed.\n", __func__, device_xname(parent));
#endif
return 0;
} else {
return 1;
}
}
/* Attach function for ppbus. */
static void
ppbus_attach(device_t parent, device_t self, void *aux)
{
struct ppbus_softc *ppbus = device_private(self);
struct parport_adapter *sc_link = aux;
struct ppbus_attach_args args;
printf("\n");
/* Initialize config data from adapter (bus + device methods) */
ppbus->sc_dev = self;
args.capabilities = ppbus->sc_capabilities = sc_link->capabilities;
ppbus->ppbus_io = sc_link->parport_io;
ppbus->ppbus_exec_microseq = sc_link->parport_exec_microseq;
ppbus->ppbus_reset_epp_timeout = sc_link->
parport_reset_epp_timeout;
ppbus->ppbus_setmode = sc_link->parport_setmode;
ppbus->ppbus_getmode = sc_link->parport_getmode;
ppbus->ppbus_ecp_sync = sc_link->parport_ecp_sync;
ppbus->ppbus_read = sc_link->parport_read;
ppbus->ppbus_write = sc_link->parport_write;
ppbus->ppbus_read_ivar = sc_link->parport_read_ivar;
ppbus->ppbus_write_ivar = sc_link->parport_write_ivar;
ppbus->ppbus_dma_malloc = sc_link->parport_dma_malloc;
ppbus->ppbus_dma_free = sc_link->parport_dma_free;
ppbus->ppbus_add_handler = sc_link->parport_add_handler;
ppbus->ppbus_remove_handler = sc_link->parport_remove_handler;
/* Initially there is no device owning the bus */
ppbus->ppbus_owner = NULL;
/* Initialize locking structures */
mutex_init(&(ppbus->sc_lock), MUTEX_DEFAULT, IPL_NONE);
/* Set up bus mode and ieee state */
ppbus->sc_mode = ppbus->ppbus_getmode(device_parent(self));
ppbus->sc_use_ieee = 1;
ppbus->sc_1284_state = PPBUS_FORWARD_IDLE;
ppbus->sc_1284_error = PPBUS_NO_ERROR;
/* Record device's sucessful attachment */
ppbus->sc_dev_ok = PPBUS_OK;
#ifndef DONTPROBE_1284
/* detect IEEE1284 compliant devices */
if (ppbus_scan_bus(self)) {
printf("%s: No IEEE1284 device found.\n", device_xname(self));
} else {
printf("%s: IEEE1284 device found.\n", device_xname(self));
/*
* Detect device ID (interrupts must be disabled because we
* cannot do a ltsleep() to wait for it - no context)
*/
if (args.capabilities & PPBUS_HAS_INTR) {
int val = 0;
if(ppbus_write_ivar(self, PPBUS_IVAR_INTR, &val) != 0) {
printf(" <problem initializing interrupt "
"usage>");
}
}
ppbus_pnp_detect(self);
}
#endif /* !DONTPROBE_1284 */
/* Configure child devices */
SLIST_INIT(&(ppbus->sc_childlist_head));
config_search_ia(ppbus_search_children, self, "ppbus", &args);
#if NGPIO > 0
gpio_ppbus_attach(ppbus);
#endif
return;
}
/* Detach function for ppbus. */
static int
ppbus_detach(device_t self, int flag)
{
struct ppbus_softc * ppbus = device_private(self);
struct ppbus_device_softc * child;
if (ppbus->sc_dev_ok != PPBUS_OK) {
if (!(flag & DETACH_QUIET))
printf("%s: detach called on unattached device.\n",
device_xname(ppbus->sc_dev));
if (!(flag & DETACH_FORCE))
return 0;
if (!(flag & DETACH_QUIET))
printf("%s: continuing detach (DETACH_FORCE).\n",
device_xname(ppbus->sc_dev));
}
mutex_destroy(&(ppbus->sc_lock));
/* Detach children devices */
while (!SLIST_EMPTY(&(ppbus->sc_childlist_head))) {
child = SLIST_FIRST(&(ppbus->sc_childlist_head));
config_deactivate(child->sc_dev);
if (config_detach(child->sc_dev, flag)) {
if(!(flag & DETACH_QUIET))
aprint_error_dev(ppbus->sc_dev, "error detaching %s.",
device_xname(child->sc_dev));
if(!(flag & DETACH_FORCE))
return 0;
if(!(flag & DETACH_QUIET))
printf("%s: continuing (DETACH_FORCE).\n",
device_xname(ppbus->sc_dev));
}
SLIST_REMOVE_HEAD(&(ppbus->sc_childlist_head), entries);
}
if (!(flag & DETACH_QUIET))
printf("%s: detached.\n", device_xname(ppbus->sc_dev));
return 1;
}
/* Search for children device and add to list */
static int
ppbus_search_children(device_t parent, cfdata_t cf,
const int *ldesc, void *aux)
{
struct ppbus_softc *ppbus = device_private(parent);
struct ppbus_device_softc *child;
int rval = 0;
if (config_match(parent, cf, aux) > 0) {
child = (struct ppbus_device_softc *) config_attach(parent,
cf, aux, NULL);
if (child) {
SLIST_INSERT_HEAD(&(ppbus->sc_childlist_head), child,
entries);
rval = 1;
}
}
return rval;
}