63ec9d57c9
group number properly based on the board id. Perform dummy reads of registers after writing to flush the hardware write buffers. This gets the soon to be committed zs attachment working.
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/*-
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* Copyright (c) 2003 Jake Burkholder.
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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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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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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/kernel.h>
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#include <sys/malloc.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <sparc64/central/centralvar.h>
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#include <sparc64/fhc/fhcreg.h>
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#include <sparc64/fhc/fhcvar.h>
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#include <sparc64/sbus/ofw_sbus.h>
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static int fhc_central_probe(device_t dev);
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static int fhc_central_attach(device_t dev);
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static device_method_t fhc_central_methods[] = {
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/* Device interface. */
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DEVMETHOD(device_probe, fhc_central_probe),
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DEVMETHOD(device_attach, fhc_central_attach),
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/* Bus interface. */
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DEVMETHOD(bus_print_child, fhc_print_child),
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DEVMETHOD(bus_probe_nomatch, fhc_probe_nomatch),
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DEVMETHOD(bus_read_ivar, fhc_read_ivar),
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DEVMETHOD(bus_write_ivar, fhc_write_ivar),
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DEVMETHOD(bus_setup_intr, fhc_setup_intr),
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DEVMETHOD(bus_teardown_intr, fhc_teardown_intr),
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DEVMETHOD(bus_alloc_resource, fhc_alloc_resource),
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DEVMETHOD(bus_release_resource, fhc_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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{ NULL, NULL }
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};
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static driver_t fhc_central_driver = {
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"fhc",
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fhc_central_methods,
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sizeof(struct fhc_softc),
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};
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static devclass_t fhc_central_devclass;
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DRIVER_MODULE(fhc, central, fhc_central_driver, fhc_central_devclass, 0, 0);
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static int
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fhc_central_probe(device_t dev)
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{
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if (strcmp(central_get_name(dev), "fhc") == 0) {
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device_set_desc(dev, "fhc");
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return (fhc_probe(dev));
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}
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return (ENXIO);
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}
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static int
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fhc_central_attach(device_t dev)
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{
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struct sbus_regs *reg;
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struct fhc_softc *sc;
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bus_addr_t size;
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bus_addr_t off;
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phandle_t node;
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int board;
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int nreg;
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int rid;
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int i;
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sc = device_get_softc(dev);
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node = central_get_node(dev);
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sc->sc_node = node;
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sc->sc_flags |= FHC_CENTRAL;
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nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
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if (nreg != FHC_NREG) {
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device_printf(dev, "can't get registers");
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return (ENXIO);
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}
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for (i = 0; i < nreg; i++) {
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off = reg[i].sbr_offset;
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size = reg[i].sbr_size;
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rid = 0;
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sc->sc_memres[i] = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&rid, off, off + size - 1, size, RF_ACTIVE);
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if (sc->sc_memres[i] == NULL)
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panic("fhc_central_attach: can't allocate registers");
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sc->sc_bt[i] = rman_get_bustag(sc->sc_memres[i]);
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sc->sc_bh[i] = rman_get_bushandle(sc->sc_memres[i]);
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}
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free(reg, M_OFWPROP);
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board = bus_space_read_4(sc->sc_bt[FHC_INTERNAL],
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sc->sc_bh[FHC_INTERNAL], FHC_BSR);
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sc->sc_board = ((board >> 16) & 0x1) | ((board >> 12) & 0xe);
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return (fhc_attach(dev));
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}
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