1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _PGHW_H 27 #define _PGHW_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #if (defined(_KERNEL) || defined(_KMEMUSER)) 34 #include <sys/cpuvar.h> 35 #include <sys/group.h> 36 #include <sys/processor.h> 37 #include <sys/bitmap.h> 38 #include <sys/atomic.h> 39 #include <sys/types.h> 40 #include <sys/kstat.h> 41 #include <sys/pg.h> 42 43 /* 44 * Hardware that may be shared by a group of processors 45 */ 46 typedef enum pghw_type { 47 PGHW_START, 48 PGHW_IPIPE, /* Instruction Pipeline */ 49 PGHW_CACHE, /* Cache (generally last level) */ 50 PGHW_FPU, /* Floating Point Unit / Pipeline */ 51 PGHW_MPIPE, /* Pipe to Memory */ 52 PGHW_CHIP, /* Socket */ 53 PGHW_MEMORY, 54 PGHW_POW_ACTIVE, /* Active Power Management Domain */ 55 PGHW_POW_IDLE, /* Idle Power Management Domain */ 56 PGHW_NUM_COMPONENTS 57 } pghw_type_t; 58 59 /* 60 * Returns true if the hardware is a type of power management domain 61 */ 62 #define PGHW_IS_PM_DOMAIN(hw) \ 63 (hw == PGHW_POW_ACTIVE || hw == PGHW_POW_IDLE) 64 65 /* 66 * Anonymous instance id 67 */ 68 #define PGHW_INSTANCE_ANON ((id_t)0xdecafbad) 69 70 /* 71 * Max length of PGHW kstat strings 72 */ 73 #define PGHW_KSTAT_STR_LEN_MAX 32 74 75 76 /* 77 * Platform specific handle 78 */ 79 typedef uintptr_t pghw_handle_t; 80 81 /* 82 * Processor Group (physical sharing relationship) 83 */ 84 typedef struct pghw { 85 pg_t pghw_pg; /* processor group */ 86 pghw_type_t pghw_hw; /* HW sharing relationship */ 87 id_t pghw_instance; /* sharing instance identifier */ 88 pghw_handle_t pghw_handle; /* hw specific opaque handle */ 89 kstat_t *pghw_kstat; /* physical kstats exported */ 90 } pghw_t; 91 92 /* 93 * IDs associating a CPU with various physical hardware 94 */ 95 typedef struct cpu_physid { 96 id_t cpu_chipid; /* CPU's physical processor */ 97 id_t cpu_coreid; /* CPU's physical core */ 98 id_t cpu_cacheid; /* CPU's cache id */ 99 } cpu_physid_t; 100 101 /* 102 * Physical PG initialization / CPU service hooks 103 */ 104 void pghw_init(pghw_t *, cpu_t *, pghw_type_t); 105 void pghw_fini(pghw_t *); 106 void pghw_cpu_add(pghw_t *, cpu_t *); 107 pghw_t *pghw_place_cpu(cpu_t *, pghw_type_t); 108 109 /* 110 * Physical ID cache creation / destruction 111 */ 112 void pghw_physid_create(cpu_t *); 113 void pghw_physid_destroy(cpu_t *); 114 115 /* 116 * CPU / PG hardware related seach operations 117 */ 118 pghw_t *pghw_find_pg(cpu_t *, pghw_type_t); 119 pghw_t *pghw_find_by_instance(id_t, pghw_type_t); 120 group_t *pghw_set_lookup(pghw_type_t); 121 122 void pghw_kstat_create(pghw_t *); 123 int pghw_kstat_update(kstat_t *, int); 124 125 /* Hardware sharing relationship platform interfaces */ 126 int pg_plat_hw_shared(cpu_t *, pghw_type_t); 127 int pg_plat_cpus_share(cpu_t *, cpu_t *, pghw_type_t); 128 id_t pg_plat_hw_instance_id(cpu_t *, pghw_type_t); 129 pghw_type_t pg_plat_hw_rank(pghw_type_t, pghw_type_t); 130 131 /* 132 * What comprises a "core" may vary across processor implementations, 133 * and so the term itself is somewhat unstable. For this reason, there 134 * is no PGHW_CORE type, but we provide an interface here to allow platforms 135 * to express cpu <=> core mappings. 136 */ 137 id_t pg_plat_get_core_id(cpu_t *); 138 139 #endif /* !_KERNEL && !_KMEMUSER */ 140 141 #ifdef __cplusplus 142 } 143 #endif 144 145 #endif /* _PGHW_H */ 146