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      1 /*	$NetBSD: vme_machdep.c,v 1.24 2022/06/26 05:16:22 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: vme_machdep.c,v 1.24 2022/06/26 05:16:22 tsutsui Exp $");
     31 
     32 #include <sys/types.h>
     33 #include <sys/param.h>
     34 #include <sys/time.h>
     35 #include <sys/systm.h>
     36 #include <sys/errno.h>
     37 #include <sys/device.h>
     38 
     39 #include <uvm/uvm_extern.h>
     40 
     41 #include <sys/bus.h>
     42 #include <machine/cpu.h>
     43 #include <machine/iomap.h>
     44 #include <machine/mfp.h>
     45 
     46 #include <atari/atari/device.h>
     47 #include <atari/vme/vmevar.h>
     48 
     49 static int	vmebusprint(void *, const char *);
     50 static int	vmebusmatch(device_t, cfdata_t, void *);
     51 static void	vmebusattach(device_t, device_t, void *);
     52 
     53 CFATTACH_DECL_NEW(avmebus, 0,
     54     vmebusmatch, vmebusattach, NULL, NULL);
     55 
     56 static int vmebus_attached;
     57 
     58 static int
     59 vmebusmatch(device_t parent, cfdata_t cf, void *aux)
     60 {
     61 
     62 	if (atari_realconfig == 0)
     63 		return 0;
     64 	if (strcmp((char *)aux, "avmebus") || vmebus_attached)
     65 		return 0;
     66 	return ((machineid & ATARI_FALCON) != 0) ? 0 : 1;
     67 }
     68 
     69 static void
     70 vmebusattach(device_t parent, device_t self, void *aux)
     71 {
     72 	struct vmebus_attach_args vba;
     73 
     74 	vmebus_attached = 1;
     75 
     76 	vba.vba_busname = "vme";
     77 	vba.vba_iot     = beb_alloc_bus_space_tag(NULL);
     78 	vba.vba_memt    = beb_alloc_bus_space_tag(NULL);
     79 	if ((vba.vba_iot == NULL) || (vba.vba_memt == NULL)) {
     80 		aprint_error("beb_alloc_bus_space_tag failed!\n");
     81 		return;
     82 	}
     83 
     84 	/*
     85 	 * XXX: Should we use zero or the actual (phys) start of VME memory.
     86 	 */
     87 	vba.vba_iot->base  = 0;
     88 	vba.vba_memt->base = 0;
     89 
     90 	aprint_normal("\n");
     91 	config_found(self, &vba, vmebusprint, CFARGS_NONE);
     92 }
     93 
     94 static int
     95 vmebusprint(void *aux, const char *name)
     96 {
     97 
     98 	if (name == NULL)
     99 		return UNCONF;
    100 	return QUIET;
    101 }
    102