platformvar.h revision 192067
1/*- 2 * Copyright (c) 2005 Peter Grehan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/powerpc/include/platformvar.h 192067 2009-05-14 00:34:26Z nwhitehorn $ 27 */ 28 29#ifndef _MACHINE_PLATFORMVAR_H_ 30#define _MACHINE_PLATFORMVAR_H_ 31 32/* 33 * A PowerPC platform implementation is declared with a kernel object and 34 * an associated method table, similar to a device driver. 35 * 36 * e.g. 37 * 38 * static platform_method_t chrp_methods[] = { 39 * PLATFORMMETHOD(platform_probe, chrp_probe), 40 * PLATFORMMETHOD(platform_mem_regions, ofw_mem_regions), 41 * ... 42 * PLATFORMMETHOD(platform_smp_first_cpu, chrp_smp_first_cpu), 43 * { 0, 0 } 44 * }; 45 * 46 * static platform_def_t chrp_platform = { 47 * "chrp", 48 * chrp_methods, 49 * sizeof(chrp_platform_softc), // or 0 if no softc 50 * }; 51 * 52 * PLATFORM_DEF(chrp_platform); 53 */ 54 55#include <sys/kobj.h> 56 57struct platform_kobj { 58 /* 59 * A platform instance is a kernel object 60 */ 61 KOBJ_FIELDS; 62 63 /* 64 * Utility elements that an instance may use 65 */ 66 struct mtx platform_mtx; /* available for instance use */ 67 void *platform_iptr; /* instance data pointer */ 68 69 /* 70 * Opaque data that can be overlaid with an instance-private 71 * structure. Platform code can test that this is large enough at 72 * compile time with a sizeof() test againt it's softc. There 73 * is also a run-time test when the platform kernel object is 74 * registered. 75 */ 76#define PLATFORM_OPAQUESZ 64 77 u_int platform_opaque[PLATFORM_OPAQUESZ]; 78}; 79 80typedef struct platform_kobj *platform_t; 81typedef struct kobj_class platform_def_t; 82#define platform_method_t kobj_method_t 83 84#define PLATFORMMETHOD KOBJMETHOD 85 86#define PLATFORM_DEF(name) DATA_SET(platform_set, name) 87 88#endif /* _MACHINE_PLATFORMVAR_H_ */ 89