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cpus.c revision 1.2.6.2 
      1 /* $NetBSD: cpus.c,v 1.2.6.2 2017/08/28 17:52:02 skrll Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca>
      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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: cpus.c,v 1.2.6.2 2017/08/28 17:52:02 skrll Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/bus.h>
     34 #include <sys/device.h>
     35 #include <sys/intr.h>
     36 #include <sys/systm.h>
     37 #include <sys/kernel.h>
     38 #include <sys/kmem.h>
     39 
     40 #include <dev/fdt/fdtvar.h>
     41 
     42 static int	cpus_match(device_t, cfdata_t, void *);
     43 static void	cpus_attach(device_t, device_t, void *);
     44 
     45 CFATTACH_DECL_NEW(cpus, 0, cpus_match, cpus_attach, NULL, NULL);
     46 
     47 static int
     48 cpus_match(device_t parent, cfdata_t cf, void *aux)
     49 {
     50 	struct fdt_attach_args * const faa = aux;
     51 
     52 	return OF_finddevice("/cpus") == faa->faa_phandle;
     53 }
     54 
     55 static void
     56 cpus_attach(device_t parent, device_t self, void *aux)
     57 {
     58 	struct fdt_attach_args * const faa = aux;
     59 	const int phandle = faa->faa_phandle;
     60 	int child;
     61 
     62 	aprint_naive("\n");
     63 	aprint_normal("\n");
     64 
     65 	for (child = OF_child(phandle); child; child = OF_peer(child)) {
     66 		if (!fdtbus_status_okay(child))
     67 			continue;
     68 
     69 		struct fdt_attach_args cfaa = *faa;
     70 		cfaa.faa_phandle = child;
     71 		cfaa.faa_name = "cpu";
     72 		cfaa.faa_quiet = 0;
     73 
     74 		device_t cpu = config_found(self, &cfaa, fdtbus_print);
     75 		if (cpu)
     76 			config_found(cpu, &cfaa, NULL);
     77 	}
     78 }
     79