325 lines
8.9 KiB
C
325 lines
8.9 KiB
C
/* $NetBSD: amps.c,v 1.12 2006/07/13 22:56:00 gdamore Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Mark Brinicombe of Causality Limited.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*
|
|
* Card driver and probe and attach functions to use generic 16550 com
|
|
* driver for the Atomwide multiport serial podule
|
|
*/
|
|
|
|
/*
|
|
* Thanks to Martin Coulson, Atomwide, for providing the hardware
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: amps.c,v 1.12 2006/07/13 22:56:00 gdamore Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/select.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/user.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/file.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/types.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/intr.h>
|
|
#include <machine/io.h>
|
|
#include <machine/bus.h>
|
|
#include <acorn32/podulebus/podulebus.h>
|
|
#include <acorn32/podulebus/ampsreg.h>
|
|
#include <dev/ic/comreg.h>
|
|
#include <dev/ic/comvar.h>
|
|
#include <dev/podulebus/podules.h>
|
|
|
|
#include "locators.h"
|
|
|
|
/*
|
|
* Atomwide Mulit-port serial podule device.
|
|
*
|
|
* This probes and attaches the top level multi-port serial device to the
|
|
* podulebus. It then configures the child com devices.
|
|
*/
|
|
|
|
/*
|
|
* Atomwide Multi-port serial card softc structure.
|
|
*
|
|
* Contains the device node, podule information and global information
|
|
* required by the driver such as the card version and the interrupt mask.
|
|
*/
|
|
|
|
struct amps_softc {
|
|
struct device sc_dev; /* device node */
|
|
podule_t *sc_podule; /* Our podule info */
|
|
int sc_podule_number; /* Our podule number */
|
|
bus_space_tag_t sc_iot; /* Bus tag */
|
|
};
|
|
|
|
int amps_probe(struct device *, struct cfdata *, void *);
|
|
void amps_attach(struct device *, struct device *, void *);
|
|
|
|
CFATTACH_DECL(amps, sizeof(struct amps_softc),
|
|
amps_probe, amps_attach, NULL, NULL);
|
|
|
|
int amps_print(void *, const char *);
|
|
void amps_shutdown(void *);
|
|
|
|
/*
|
|
* Attach arguments for child devices.
|
|
* Pass the podule details, the parent softc and the channel
|
|
*/
|
|
|
|
struct amps_attach_args {
|
|
bus_space_tag_t aa_iot; /* bus space tag */
|
|
unsigned int aa_base; /* base address for port */
|
|
int aa_port; /* serial port number */
|
|
podulebus_intr_handle_t aa_irq; /* IRQ number */
|
|
};
|
|
|
|
/*
|
|
* Define prototypes for custom bus space functions.
|
|
*/
|
|
|
|
/* Print function used during child config */
|
|
|
|
int
|
|
amps_print(aux, name)
|
|
void *aux;
|
|
const char *name;
|
|
{
|
|
struct amps_attach_args *aa = aux;
|
|
|
|
if (!name)
|
|
aprint_normal(", port %d", aa->aa_port);
|
|
|
|
return(QUIET);
|
|
}
|
|
|
|
/*
|
|
* Card probe function
|
|
*
|
|
* Just match the manufacturer and podule ID's
|
|
*/
|
|
|
|
int
|
|
amps_probe(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
struct podule_attach_args *pa = (void *)aux;
|
|
|
|
return (pa->pa_product == PODULE_ATOMWIDE_SERIAL);
|
|
}
|
|
|
|
/*
|
|
* Card attach function
|
|
*
|
|
* Identify the card version and configure any children.
|
|
* Install a shutdown handler to kill interrupts on shutdown
|
|
*/
|
|
|
|
void
|
|
amps_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct amps_softc *sc = (void *)self;
|
|
struct podule_attach_args *pa = (void *)aux;
|
|
struct amps_attach_args aa;
|
|
|
|
/* Note the podule number and validate */
|
|
|
|
if (pa->pa_podule_number == -1)
|
|
panic("Podule has disappeared !");
|
|
|
|
sc->sc_podule_number = pa->pa_podule_number;
|
|
sc->sc_podule = pa->pa_podule;
|
|
podules[sc->sc_podule_number].attached = 1;
|
|
|
|
sc->sc_iot = pa->pa_iot;
|
|
|
|
/* Install a clean up handler to make sure IRQ's are disabled */
|
|
/* if (shutdownhook_establish(amps_shutdown, (void *)sc) == NULL)
|
|
panic("%s: Cannot install shutdown handler", self->dv_xname);*/
|
|
|
|
/* Set the interrupt info for this podule */
|
|
|
|
/* sc->sc_podule->irq_addr = pa->pa_podule->slow_base +;*/ /* XXX */
|
|
/* sc->sc_podule->irq_mask = ;*/
|
|
|
|
printf("\n");
|
|
|
|
/* Configure the children */
|
|
|
|
aa.aa_iot = sc->sc_iot;
|
|
aa.aa_base = pa->pa_podule->slow_base + AMPS_BASE_OFFSET;
|
|
aa.aa_base += MAX_AMPS_PORTS * AMPS_PORT_SPACING;
|
|
aa.aa_irq = pa->pa_podule->interrupt;
|
|
for (aa.aa_port = 0; aa.aa_port < MAX_AMPS_PORTS; ++aa.aa_port) {
|
|
aa.aa_base -= AMPS_PORT_SPACING;
|
|
config_found(self, &aa, amps_print);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Card shutdown function
|
|
*
|
|
* Called via do_shutdown_hooks() during kernel shutdown.
|
|
* Clear the cards's interrupt mask to stop any podule interrupts.
|
|
*/
|
|
|
|
/*void
|
|
amps_shutdown(arg)
|
|
void *arg;
|
|
{
|
|
}*/
|
|
|
|
/*
|
|
* Atomwide Multi-Port Serial probe and attach code for the com device.
|
|
*
|
|
* This provides a different pair of probe and attach functions
|
|
* for attaching the com device (dev/ic/com.c) to the Atomwide serial card.
|
|
*/
|
|
|
|
struct com_amps_softc {
|
|
struct com_softc sc_com; /* real "com" softc */
|
|
void *sc_ih; /* interrupt handler */
|
|
struct evcnt sc_intrcnt; /* interrupt count */
|
|
};
|
|
|
|
/* Prototypes for functions */
|
|
|
|
static int com_amps_probe __P((struct device *, struct cfdata *, void *));
|
|
static void com_amps_attach __P((struct device *, struct device *, void *));
|
|
|
|
/* device attach structure */
|
|
|
|
CFATTACH_DECL(com_amps, sizeof(struct com_amps_softc),
|
|
com_amps_probe, com_amps_attach, NULL, NULL);
|
|
|
|
/*
|
|
* Controller probe function
|
|
*
|
|
* Map all the required I/O space for this channel, make sure interrupts
|
|
* are disabled and probe the bus.
|
|
*/
|
|
|
|
int
|
|
com_amps_probe(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
int iobase;
|
|
int rv = 1;
|
|
struct amps_attach_args *aa = aux;
|
|
|
|
iot = aa->aa_iot;
|
|
iobase = aa->aa_base;
|
|
|
|
/* if it's in use as console, it's there. */
|
|
if (!com_is_console(iot, iobase, 0)) {
|
|
if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) {
|
|
return 0;
|
|
}
|
|
/*
|
|
* We don't use the generic comprobe1() function as it
|
|
* is not good enough to identify which ports are present.
|
|
*
|
|
* Instead test for the presence of the scratch register
|
|
*/
|
|
|
|
bus_space_write_1(iot, ioh, com_scratch, 0x55);
|
|
bus_space_write_1(iot, ioh, com_ier, 0);
|
|
(void)bus_space_read_1(iot, ioh, com_data);
|
|
if (bus_space_read_1(iot, ioh, com_scratch) != 0x55)
|
|
rv = 0;
|
|
bus_space_write_1(iot, ioh, com_scratch, 0xaa);
|
|
bus_space_write_1(iot, ioh, com_ier, 0);
|
|
(void)bus_space_read_1(iot, ioh, com_data);
|
|
if (bus_space_read_1(iot, ioh, com_scratch) != 0xaa)
|
|
rv = 0;
|
|
|
|
bus_space_unmap(iot, ioh, COM_NPORTS);
|
|
}
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Controller attach function
|
|
*
|
|
* Map all the required I/O space for this port and attach the driver
|
|
* The generic attach will probe and attach any device.
|
|
* Install an interrupt handler and we are ready to rock.
|
|
*/
|
|
|
|
void
|
|
com_amps_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct com_amps_softc *asc = (void *)self;
|
|
struct com_softc *sc = &asc->sc_com;
|
|
u_int iobase;
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
struct amps_attach_args *aa = aux;
|
|
|
|
iot = aa->aa_iot;
|
|
iobase = aa->aa_base;
|
|
|
|
if (!com_is_console(iot, iobase, &ioh)
|
|
&& bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh))
|
|
panic("comattach: io mapping failed");
|
|
COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
|
|
|
|
sc->sc_frequency = AMPS_FREQ;
|
|
com_attach_subr(sc);
|
|
|
|
evcnt_attach_dynamic(&asc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
|
|
self->dv_xname, "intr");
|
|
asc->sc_ih = podulebus_irq_establish(aa->aa_irq, IPL_SERIAL, comintr,
|
|
sc, &asc->sc_intrcnt);
|
|
}
|