115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
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/*-
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* Copyright (c) 2007 Bruce M. Simpson.
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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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/*
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* Child driver for SDRAM/DDR controller core.
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* Generally the OS should not need to access this device unless the
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* firmware has not configured the SDRAM controller.
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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/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <dev/siba/sibavar.h>
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#include <dev/siba/sibareg.h>
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#include <dev/siba/siba_ids.h>
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static int siba_sdram_attach(device_t);
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static int siba_sdram_probe(device_t);
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static int
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siba_sdram_probe(device_t dev)
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{
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if (siba_get_vendor(dev) == SIBA_VID_BROADCOM &&
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siba_get_device(dev) == SIBA_DEVID_SDRAMDDR) {
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device_set_desc(dev, "SDRAM/DDR core");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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struct siba_sdram_softc {
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void *notused;
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};
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static int
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siba_sdram_attach(device_t dev)
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{
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//struct siba_sdram_softc *sc = device_get_softc(dev);
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struct resource *mem;
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int rid;
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/*
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* Allocate the resources which the parent bus has already
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* determined for us.
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* TODO: interrupt routing
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*/
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#define MIPS_MEM_RID 0x20
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rid = MIPS_MEM_RID;
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mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
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RF_ACTIVE);
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if (mem == NULL) {
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device_printf(dev, "unable to allocate memory\n");
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return (ENXIO);
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}
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#if 0
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device_printf(dev, "start %08lx size %04lx\n",
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rman_get_start(mem), rman_get_size(mem));
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#endif
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return (0);
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}
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static device_method_t siba_sdram_methods[] = {
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/* Device interface */
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DEVMETHOD(device_attach, siba_sdram_attach),
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DEVMETHOD(device_probe, siba_sdram_probe),
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{0, 0},
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};
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static driver_t siba_sdram_driver = {
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"siba_sdram",
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siba_sdram_methods,
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sizeof(struct siba_softc),
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};
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static devclass_t siba_sdram_devclass;
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DRIVER_MODULE(siba_sdram, siba, siba_sdram_driver, siba_sdram_devclass, 0, 0);
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