6239f9e5f1
total of 6 interrupt resources for scc(4) on macio(4). This is 3 per channel, of which the 1st of each channel is the interrupt associated with the SCC. The other 2 are for DMA operation. Change scc_bfe_attach() to accept an argument that's the number of interrupts per channel (ipc) and change each bus front-end (bfe) to pass that argument through a wrapper for the device_attach method. For now, we only allocate the 1st interrupt of each channel to perserve behaviour.
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/*-
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* Copyright (c) 2006 Marcel Moolenaar
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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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*
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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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* 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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*
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <dev/ofw/ofw_bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/scc/scc_bfe.h>
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#define MACIO_REGSHFT 4
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#define MACIO_RCLK 230400
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static int
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scc_macio_probe(device_t dev)
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{
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struct scc_softc *sc;
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const char *nm;
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sc = device_get_softc(dev);
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nm = ofw_bus_get_name(dev);
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if (!strcmp(nm, "escc")) {
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device_set_desc(dev, "Zilog Z8530 dual channel SCC");
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sc->sc_class = &scc_z8530_class;
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return (scc_bfe_probe(dev, MACIO_REGSHFT, MACIO_RCLK, 0));
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}
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return (ENXIO);
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}
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static int
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scc_macio_attach(device_t dev)
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{
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return (scc_bfe_attach(dev, 3));
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}
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static device_method_t scc_macio_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, scc_macio_probe),
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DEVMETHOD(device_attach, scc_macio_attach),
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DEVMETHOD(device_detach, scc_bfe_detach),
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DEVMETHOD(bus_alloc_resource, scc_bus_alloc_resource),
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DEVMETHOD(bus_release_resource, scc_bus_release_resource),
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DEVMETHOD(bus_get_resource, scc_bus_get_resource),
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DEVMETHOD(bus_read_ivar, scc_bus_read_ivar),
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DEVMETHOD(bus_setup_intr, scc_bus_setup_intr),
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DEVMETHOD(bus_teardown_intr, scc_bus_teardown_intr),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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{ 0, 0 }
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};
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static driver_t scc_macio_driver = {
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scc_driver_name,
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scc_macio_methods,
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sizeof(struct scc_softc),
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};
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DRIVER_MODULE(scc, macio, scc_macio_driver, scc_devclass, 0, 0);
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