2 * Copyright (c) 2007 Bruce M. Simpson.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * Child driver for SDRAM/DDR controller core.
29 * Generally the OS should not need to access this device unless the
30 * firmware has not configured the SDRAM controller.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
37 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/module.h>
42 #include <sys/malloc.h>
44 #include <machine/bus.h>
46 #include <dev/siba/sibavar.h>
47 #include <dev/siba/sibareg.h>
48 #include <dev/siba/siba_ids.h>
50 static int siba_sdram_attach(device_t);
51 static int siba_sdram_probe(device_t);
54 siba_sdram_probe(device_t dev)
57 if (siba_get_vendor(dev) == SIBA_VID_BROADCOM &&
58 siba_get_device(dev) == SIBA_DEVID_SDRAMDDR) {
59 device_set_desc(dev, "SDRAM/DDR core");
60 return (BUS_PROBE_DEFAULT);
66 struct siba_sdram_softc {
71 siba_sdram_attach(device_t dev)
73 //struct siba_sdram_softc *sc = device_get_softc(dev);
78 * Allocate the resources which the parent bus has already
80 * TODO: interrupt routing
82 #define MIPS_MEM_RID 0x20
84 mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
87 device_printf(dev, "unable to allocate memory\n");
92 device_printf(dev, "start %08lx size %04lx\n",
93 rman_get_start(mem), rman_get_size(mem));
99 static device_method_t siba_sdram_methods[] = {
100 /* Device interface */
101 DEVMETHOD(device_attach, siba_sdram_attach),
102 DEVMETHOD(device_probe, siba_sdram_probe),
107 static driver_t siba_sdram_driver = {
110 sizeof(struct siba_softc),
112 static devclass_t siba_sdram_devclass;
114 DRIVER_MODULE(siba_sdram, siba, siba_sdram_driver, siba_sdram_devclass, 0, 0);