1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved. 7 * 8 * Data types used by the SN_SAL_HWPERF_OP SAL call for monitoring 9 * SGI Altix node and router hardware 10 * 11 * Mark Goodwin <markgw@sgi.com> Mon Aug 30 12:23:46 EST 2004 12 */ 13 14#ifndef SN_HWPERF_H 15#define SN_HWPERF_H 16 17/* 18 * object structure. SN_HWPERF_ENUM_OBJECTS and SN_HWPERF_GET_CPU_INFO 19 * return an array of these. Do not change this without also 20 * changing the corresponding SAL code. 21 */ 22#define SN_HWPERF_MAXSTRING 128 23struct sn_hwperf_object_info { 24 u32 id; 25 union { 26 struct { 27 u64 this_part:1; 28 u64 is_shared:1; 29 } fields; 30 struct { 31 u64 flags; 32 u64 reserved; 33 } b; 34 } f; 35 char name[SN_HWPERF_MAXSTRING]; 36 char location[SN_HWPERF_MAXSTRING]; 37 u32 ports; 38}; 39 40#define sn_hwp_this_part f.fields.this_part 41#define sn_hwp_is_shared f.fields.is_shared 42#define sn_hwp_flags f.b.flags 43 44/* macros for object classification */ 45#define SN_HWPERF_IS_NODE(x) ((x) && strstr((x)->name, "SHub")) 46#define SN_HWPERF_IS_NODE_SHUB2(x) ((x) && strstr((x)->name, "SHub 2.")) 47#define SN_HWPERF_IS_IONODE(x) ((x) && strstr((x)->name, "TIO")) 48#define SN_HWPERF_IS_NL3ROUTER(x) ((x) && strstr((x)->name, "NL3Router")) 49#define SN_HWPERF_IS_NL4ROUTER(x) ((x) && strstr((x)->name, "NL4Router")) 50#define SN_HWPERF_IS_OLDROUTER(x) ((x) && strstr((x)->name, "Router")) 51#define SN_HWPERF_IS_ROUTER(x) (SN_HWPERF_IS_NL3ROUTER(x) || \ 52 SN_HWPERF_IS_NL4ROUTER(x) || \ 53 SN_HWPERF_IS_OLDROUTER(x)) 54#define SN_HWPERF_FOREIGN(x) ((x) && !(x)->sn_hwp_this_part && !(x)->sn_hwp_is_shared) 55#define SN_HWPERF_SAME_OBJTYPE(x,y) ((SN_HWPERF_IS_NODE(x) && SN_HWPERF_IS_NODE(y)) ||\ 56 (SN_HWPERF_IS_IONODE(x) && SN_HWPERF_IS_IONODE(y)) ||\ 57 (SN_HWPERF_IS_ROUTER(x) && SN_HWPERF_IS_ROUTER(y))) 58 59/* numa port structure, SN_HWPERF_ENUM_PORTS returns an array of these */ 60struct sn_hwperf_port_info { 61 u32 port; 62 u32 conn_id; 63 u32 conn_port; 64}; 65 66/* for HWPERF_{GET,SET}_MMRS */ 67struct sn_hwperf_data { 68 u64 addr; 69 u64 data; 70}; 71 72/* user ioctl() argument, see below */ 73struct sn_hwperf_ioctl_args { 74 u64 arg; /* argument, usually an object id */ 75 u64 sz; /* size of transfer */ 76 void *ptr; /* pointer to source/target */ 77 u32 v0; /* second return value */ 78}; 79 80/* 81 * For SN_HWPERF_{GET,SET}_MMRS and SN_HWPERF_OBJECT_DISTANCE, 82 * sn_hwperf_ioctl_args.arg can be used to specify a CPU on which 83 * to call SAL, and whether to use an interprocessor interrupt 84 * or task migration in order to do so. If the CPU specified is 85 * SN_HWPERF_ARG_ANY_CPU, then the current CPU will be used. 86 */ 87#define SN_HWPERF_ARG_ANY_CPU 0x7fffffffUL 88#define SN_HWPERF_ARG_CPU_MASK 0x7fffffff00000000ULL 89#define SN_HWPERF_ARG_USE_IPI_MASK 0x8000000000000000ULL 90#define SN_HWPERF_ARG_OBJID_MASK 0x00000000ffffffffULL 91 92/* 93 * ioctl requests on the "sn_hwperf" misc device that call SAL. 94 */ 95#define SN_HWPERF_OP_MEM_COPYIN 0x1000 96#define SN_HWPERF_OP_MEM_COPYOUT 0x2000 97#define SN_HWPERF_OP_MASK 0x0fff 98 99/* 100 * Determine mem requirement. 101 * arg don't care 102 * sz 8 103 * p pointer to u64 integer 104 */ 105#define SN_HWPERF_GET_HEAPSIZE 1 106 107/* 108 * Install mem for SAL drvr 109 * arg don't care 110 * sz sizeof buffer pointed to by p 111 * p pointer to buffer for scratch area 112 */ 113#define SN_HWPERF_INSTALL_HEAP 2 114 115/* 116 * Determine number of objects 117 * arg don't care 118 * sz 8 119 * p pointer to u64 integer 120 */ 121#define SN_HWPERF_OBJECT_COUNT (10|SN_HWPERF_OP_MEM_COPYOUT) 122 123/* 124 * Determine object "distance", relative to a cpu. This operation can 125 * execute on a designated logical cpu number, using either an IPI or 126 * via task migration. If the cpu number is SN_HWPERF_ANY_CPU, then 127 * the current CPU is used. See the SN_HWPERF_ARG_* macros above. 128 * 129 * arg bitmap of IPI flag, cpu number and object id 130 * sz 8 131 * p pointer to u64 integer 132 */ 133#define SN_HWPERF_OBJECT_DISTANCE (11|SN_HWPERF_OP_MEM_COPYOUT) 134 135/* 136 * Enumerate objects. Special case if sz == 8, returns the required 137 * buffer size. 138 * arg don't care 139 * sz sizeof buffer pointed to by p 140 * p pointer to array of struct sn_hwperf_object_info 141 */ 142#define SN_HWPERF_ENUM_OBJECTS (12|SN_HWPERF_OP_MEM_COPYOUT) 143 144/* 145 * Enumerate NumaLink ports for an object. Special case if sz == 8, 146 * returns the required buffer size. 147 * arg object id 148 * sz sizeof buffer pointed to by p 149 * p pointer to array of struct sn_hwperf_port_info 150 */ 151#define SN_HWPERF_ENUM_PORTS (13|SN_HWPERF_OP_MEM_COPYOUT) 152 153/* 154 * SET/GET memory mapped registers. These operations can execute 155 * on a designated logical cpu number, using either an IPI or via 156 * task migration. If the cpu number is SN_HWPERF_ANY_CPU, then 157 * the current CPU is used. See the SN_HWPERF_ARG_* macros above. 158 * 159 * arg bitmap of ipi flag, cpu number and object id 160 * sz sizeof buffer pointed to by p 161 * p pointer to array of struct sn_hwperf_data 162 */ 163#define SN_HWPERF_SET_MMRS (14|SN_HWPERF_OP_MEM_COPYIN) 164#define SN_HWPERF_GET_MMRS (15|SN_HWPERF_OP_MEM_COPYOUT| \ 165 SN_HWPERF_OP_MEM_COPYIN) 166/* 167 * Lock a shared object 168 * arg object id 169 * sz don't care 170 * p don't care 171 */ 172#define SN_HWPERF_ACQUIRE 16 173 174/* 175 * Unlock a shared object 176 * arg object id 177 * sz don't care 178 * p don't care 179 */ 180#define SN_HWPERF_RELEASE 17 181 182/* 183 * Break a lock on a shared object 184 * arg object id 185 * sz don't care 186 * p don't care 187 */ 188#define SN_HWPERF_FORCE_RELEASE 18 189 190/* 191 * ioctl requests on "sn_hwperf" that do not call SAL 192 */ 193 194/* 195 * get cpu info as an array of hwperf_object_info_t. 196 * id is logical CPU number, name is description, location 197 * is geoid (e.g. 001c04#1c). Special case if sz == 8, 198 * returns the required buffer size. 199 * 200 * arg don't care 201 * sz sizeof buffer pointed to by p 202 * p pointer to array of struct sn_hwperf_object_info 203 */ 204#define SN_HWPERF_GET_CPU_INFO (100|SN_HWPERF_OP_MEM_COPYOUT) 205 206/* 207 * Given an object id, return it's node number (aka cnode). 208 * arg object id 209 * sz 8 210 * p pointer to u64 integer 211 */ 212#define SN_HWPERF_GET_OBJ_NODE (101|SN_HWPERF_OP_MEM_COPYOUT) 213 214/* 215 * Given a node number (cnode), return it's nasid. 216 * arg ordinal node number (aka cnodeid) 217 * sz 8 218 * p pointer to u64 integer 219 */ 220#define SN_HWPERF_GET_NODE_NASID (102|SN_HWPERF_OP_MEM_COPYOUT) 221 222/* 223 * Given a node id, determine the id of the nearest node with CPUs 224 * and the id of the nearest node that has memory. The argument 225 * node would normally be a "headless" node, e.g. an "IO node". 226 * Return 0 on success. 227 */ 228extern int sn_hwperf_get_nearest_node(cnodeid_t node, 229 cnodeid_t *near_mem, cnodeid_t *near_cpu); 230 231/* return codes */ 232#define SN_HWPERF_OP_OK 0 233#define SN_HWPERF_OP_NOMEM 1 234#define SN_HWPERF_OP_NO_PERM 2 235#define SN_HWPERF_OP_IO_ERROR 3 236#define SN_HWPERF_OP_BUSY 4 237#define SN_HWPERF_OP_RECONFIGURE 253 238#define SN_HWPERF_OP_INVAL 254 239 240int sn_topology_open(struct inode *inode, struct file *file); 241int sn_topology_release(struct inode *inode, struct file *file); 242#endif /* SN_HWPERF_H */ 243