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      1 /*	$NetBSD: ebus.c,v 1.4 2021/08/07 16:18:48 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2010 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code was written by Alessandro Forin and Neil Pittman
      8  * at Microsoft Research and contributed to The NetBSD Foundation
      9  * by Microsoft Corporation.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     34 __KERNEL_RCSID(0, "$NetBSD: ebus.c,v 1.4 2021/08/07 16:18:48 thorpej Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/device.h>
     39 
     40 #include <machine/sysconf.h>
     41 #include <emips/ebus/ebusvar.h>
     42 #include <emips/emips/machdep.h>
     43 
     44 #include "locators.h"
     45 
     46 void
     47 ebusattach(device_t parent, device_t self, void *aux)
     48 {
     49 	struct ebus_dev_attach_args *ida = aux;
     50 	struct ebus_attach_args *ia;
     51 	void *addr;
     52 	int i;
     53 	int locs[EBUSCF_NLOCS];
     54 
     55 	printf("\n");
     56 
     57 	/*
     58 	 * Loop through the devices and attach them.  If a probe-size
     59 	 * is specified, it's an optional item on the platform and
     60 	 * do a badaddr() test to make sure it's there.
     61 	 */
     62 	for (i = 0; i < ida->ida_ndevs; i++) {
     63 		ia = &ida->ida_devs[i];
     64 
     65 #if 0 // DEBUG
     66 		printf("PROBING %s %d@%x i=%d\n",
     67 		    ia->ia_name, ia->ia_basz, ia->ia_paddr, ia->ia_cookie);
     68 #endif
     69 		if (ia->ia_basz != 0) {
     70 			addr = (void *)mips_map_physmem(ia->ia_paddr,
     71 			    ia->ia_basz);
     72 			if (addr == NULL) {
     73 				printf("Failed to map %s: phys %x size %d\n",
     74 				    ia->ia_name, ia->ia_paddr, ia->ia_basz);
     75 				continue;
     76 			}
     77 			ia->ia_vaddr = addr;
     78 #if 0 // DEBUG
     79 			printf("MAPPED at %p\n", ia->ia_vaddr);
     80 #endif
     81 		}
     82 
     83 		locs[EBUSCF_ADDR] = ia->ia_paddr;
     84 
     85 		if (config_found(self, ia, ebusprint,
     86 				 CFARGS(.submatch = config_stdsubmatch,
     87 					.locators = locs)) == NULL) {
     88 			/* do we need to say anything? */
     89 			if (ia->ia_basz != 0) {
     90 				mips_unmap_physmem((vaddr_t)ia->ia_vaddr,
     91 				    ia->ia_basz);
     92 			}
     93 		}
     94 	}
     95 }
     96 
     97 int
     98 ebusprint(void *aux, const char *pnp)
     99 {
    100 	struct ebus_attach_args *ia = aux;
    101 
    102 	if (pnp)
    103 		aprint_normal("%s at %s", ia->ia_name, pnp);
    104 
    105 	aprint_normal(" addr 0x%x", ia->ia_paddr);
    106 
    107 	return UNCONF;
    108 }
    109 
    110 void
    111 ebus_intr_establish(device_t dev, void *cookie, int level,
    112     int (*handler)(void *, void *), void *arg)
    113 {
    114 
    115 	(*platform.intr_establish)(dev, cookie, level, handler, arg);
    116 }
    117