cfi_bus_nexus.c revision 188087 
1/*-
2 * Copyright (c) 2009 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27__FBSDID("$FreeBSD: head/sys/dev/cfi/cfi_bus_ixp4xx.c 188087 2009-02-03 19:09:16Z sam $");
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bus.h>
32#include <sys/conf.h>
33#include <sys/kernel.h>
34#include <sys/malloc.h>
35#include <sys/module.h>
36#include <sys/rman.h>
37#include <sys/sysctl.h>
38
39#include <machine/bus.h>
40
41#include <dev/cfi/cfi_var.h>
42
43#include <arm/xscale/ixp425/ixp425reg.h>
44#include <arm/xscale/ixp425/ixp425var.h>
45
46static int
47cfi_ixp4xx_probe(device_t dev)
48{
49	struct cfi_softc *sc = device_get_softc(dev);
50	/*
51	 * NB: we assume the boot loader sets up EXP_TIMING_CS0_OFFSET
52	 * according to the flash on the board.  If it does not then it
53	 * can be done here.
54	 */
55	if (bootverbose) {
56		struct ixp425_softc *sa =
57		    device_get_softc(device_get_parent(dev));
58		device_printf(dev, "EXP_TIMING_CS0_OFFSET 0x%x\n",
59		    EXP_BUS_READ_4(sa, EXP_TIMING_CS0_OFFSET));
60	}
61	sc->sc_width = 2;		/* NB: don't probe interface width */
62	return cfi_probe(dev);
63}
64
65static device_method_t cfi_ixp4xx_methods[] = {
66	/* device interface */
67	DEVMETHOD(device_probe,		cfi_ixp4xx_probe),
68	DEVMETHOD(device_attach,	cfi_attach),
69	DEVMETHOD(device_detach,	cfi_detach),
70
71	{0, 0}
72};
73
74static driver_t cfi_ixp4xx_driver = {
75	cfi_driver_name,
76	cfi_ixp4xx_methods,
77	sizeof(struct cfi_softc),
78};
79DRIVER_MODULE (cfi, ixp, cfi_ixp4xx_driver, cfi_devclass, 0, 0);
80