1 /*        $NetBSD: flash.c,v 1.5 2011/07/01 19:03:09 dyoung Exp $     */
2 
3 /*
4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: flash.c,v 1.5 2011/07/01 19:03:09 dyoung Exp $");
34 
35 #include <sys/param.h>
36 #include <sys/device.h>
37 #include <sys/systm.h>
38 
39 #include <sys/bus.h>
40 #include <arch/evbppc/pmppc/dev/mainbus.h>
41 
42 struct flash_softc {
43           device_t sc_dev;
44           bus_space_tag_t sc_tag;
45           bus_space_handle_t sc_handle;
46           u_int32_t sc_addr;
47           u_int32_t sc_size;
48           u_int32_t sc_width;
49 };
50 
51 static int          flash_match(device_t, cfdata_t, void *);
52 static void         flash_attach(device_t, device_t, void *);
53 
54 CFATTACH_DECL_NEW(flash, sizeof(struct flash_softc),
55     flash_match, flash_attach, NULL, NULL);
56 
57 int
flash_match(device_t parent,cfdata_t cf,void * aux)58 flash_match(device_t parent, cfdata_t cf, void *aux)
59 {
60           struct mainbus_attach_args *maa = aux;
61 
62           return (strcmp(maa->mb_name, "flash") == 0);
63 }
64 
65 void
flash_attach(device_t parent,device_t self,void * aux)66 flash_attach(device_t parent, device_t self, void *aux)
67 {
68           struct mainbus_attach_args *maa = aux;
69           struct flash_softc *sc = device_private(self);
70 
71           sc->sc_tag = maa->mb_bt;
72           sc->sc_addr = maa->mb_addr;
73           sc->sc_size = maa->u.mb_flash.size / 8; /* bytes */
74           sc->sc_width = maa->u.mb_flash.width;
75 
76           aprint_normal(": %d Mbyte, %d bits wide\n", sc->sc_size / (1024*1024),
77                  sc->sc_width);
78 #if 0
79           /* The extend map doesn't cover this area. */
80           if (bus_space_map(sc->sc_tag, sc->sc_addr, sc->sc_size, 0,
81                                 &sc->sc_handle)) {
82                     aprint_error_dev(self, "can't map i/o space\n");
83                     return;
84           }
85 #endif
86 
87           aprint_error_dev(self, "driver not implemented\n");
88 }
89