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      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 (at) 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
     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
     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