release/src-rt-6.x.4708/linux/linux-2.6.36/arch/ia64/include/asm/sn/sn2/sn_hwperf.h

   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
  23 struct 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 */
  60 struct sn_hwperf_port_info {
  61         u32 port;
  62         u32 conn_id;
  63         u32 conn_port;
  64 };
  65
  66 /* for HWPERF_{GET,SET}_MMRS */
  67 struct sn_hwperf_data {
  68         u64 addr;
  69         u64 data;
  70 };
  71
  72 /* user ioctl() argument, see below */
  73 struct 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  */
 228 extern 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
 240 int sn_topology_open(struct inode *inode, struct file *file);
 241 int sn_topology_release(struct inode *inode, struct file *file);
 242 #endif                          /* SN_HWPERF_H */