1 /* $NetBSD: cpus.c,v 1.2 2017/06/02 00:01:00 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2017 Jared McNeill <jmcneill@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 2017/06/02 00:01:00 jmcneill 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