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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2004 Silicon Graphics, Inc. All rights reserved.
*
* Data types used by the SN_SAL_HWPERF_OP SAL call for monitoring
* SGI Altix node and router hardware
*
* Mark Goodwin <markgw@sgi.com> Mon Aug 30 12:23:46 EST 2004
*/
#ifndef SN_HWPERF_H
#define SN_HWPERF_H
/*
* object structure. SN_HWPERF_ENUM_OBJECTS and SN_HWPERF_GET_CPU_INFO
* return an array of these. Do not change this without also
* changing the corresponding SAL code.
*/
#define SN_HWPERF_MAXSTRING 128
struct sn_hwperf_object_info {
u32 id;
union {
struct {
u64 this_part:1;
u64 is_shared:1;
} fields;
struct {
u64 flags;
u64 reserved;
} b;
} f;
char name[SN_HWPERF_MAXSTRING];
char location[SN_HWPERF_MAXSTRING];
u32 ports;
};
#define sn_hwp_this_part f.fields.this_part
#define sn_hwp_is_shared f.fields.is_shared
#define sn_hwp_flags f.b.flags
/* macros for object classification */
#define SN_HWPERF_IS_NODE(x) ((x) && strstr((x)->name, "SHub"))
#define SN_HWPERF_IS_NODE_SHUB2(x) ((x) && strstr((x)->name, "SHub 2."))
#define SN_HWPERF_IS_IONODE(x) ((x) && strstr((x)->name, "TIO"))
#define SN_HWPERF_IS_ROUTER(x) ((x) && strstr((x)->name, "Router"))
#define SN_HWPERF_IS_NL3ROUTER(x) ((x) && strstr((x)->name, "NL3Router"))
#define SN_HWPERF_FOREIGN(x) ((x) && !(x)->sn_hwp_this_part && !(x)->sn_hwp_is_shared)
#define SN_HWPERF_SAME_OBJTYPE(x,y) ((SN_HWPERF_IS_NODE(x) && SN_HWPERF_IS_NODE(y)) ||\
(SN_HWPERF_IS_IONODE(x) && SN_HWPERF_IS_IONODE(y)) ||\
(SN_HWPERF_IS_ROUTER(x) && SN_HWPERF_IS_ROUTER(y)))
/* numa port structure, SN_HWPERF_ENUM_PORTS returns an array of these */
struct sn_hwperf_port_info {
u32 port;
u32 conn_id;
u32 conn_port;
};
/* for HWPERF_{GET,SET}_MMRS */
struct sn_hwperf_data {
u64 addr;
u64 data;
};
/* user ioctl() argument, see below */
struct sn_hwperf_ioctl_args {
u64 arg; /* argument, usually an object id */
u64 sz; /* size of transfer */
void *ptr; /* pointer to source/target */
u32 v0; /* second return value */
};
/*
* For SN_HWPERF_{GET,SET}_MMRS and SN_HWPERF_OBJECT_DISTANCE,
* sn_hwperf_ioctl_args.arg can be used to specify a CPU on which
* to call SAL, and whether to use an interprocessor interrupt
* or task migration in order to do so. If the CPU specified is
* SN_HWPERF_ARG_ANY_CPU, then the current CPU will be used.
*/
#define SN_HWPERF_ARG_ANY_CPU 0x7fffffffUL
#define SN_HWPERF_ARG_CPU_MASK 0x7fffffff00000000ULL
#define SN_HWPERF_ARG_USE_IPI_MASK 0x8000000000000000ULL
#define SN_HWPERF_ARG_OBJID_MASK 0x00000000ffffffffULL
/*
* ioctl requests on the "sn_hwperf" misc device that call SAL.
*/
#define SN_HWPERF_OP_MEM_COPYIN 0x1000
#define SN_HWPERF_OP_MEM_COPYOUT 0x2000
#define SN_HWPERF_OP_MASK 0x0fff
/*
* Determine mem requirement.
* arg don't care
* sz 8
* p pointer to u64 integer
*/
#define SN_HWPERF_GET_HEAPSIZE 1
/*
* Install mem for SAL drvr
* arg don't care
* sz sizeof buffer pointed to by p
* p pointer to buffer for scratch area
*/
#define SN_HWPERF_INSTALL_HEAP 2
/*
* Determine number of objects
* arg don't care
* sz 8
* p pointer to u64 integer
*/
#define SN_HWPERF_OBJECT_COUNT (10|SN_HWPERF_OP_MEM_COPYOUT)
/*
* Determine object "distance", relative to a cpu. This operation can
* execute on a designated logical cpu number, using either an IPI or
* via task migration. If the cpu number is SN_HWPERF_ANY_CPU, then
* the current CPU is used. See the SN_HWPERF_ARG_* macros above.
*
* arg bitmap of IPI flag, cpu number and object id
* sz 8
* p pointer to u64 integer
*/
#define SN_HWPERF_OBJECT_DISTANCE (11|SN_HWPERF_OP_MEM_COPYOUT)
/*
* Enumerate objects. Special case if sz == 8, returns the required
* buffer size.
* arg don't care
* sz sizeof buffer pointed to by p
* p pointer to array of struct sn_hwperf_object_info
*/
#define SN_HWPERF_ENUM_OBJECTS (12|SN_HWPERF_OP_MEM_COPYOUT)
/*
* Enumerate NumaLink ports for an object. Special case if sz == 8,
* returns the required buffer size.
* arg object id
* sz sizeof buffer pointed to by p
* p pointer to array of struct sn_hwperf_port_info
*/
#define SN_HWPERF_ENUM_PORTS (13|SN_HWPERF_OP_MEM_COPYOUT)
/*
* SET/GET memory mapped registers. These operations can execute
* on a designated logical cpu number, using either an IPI or via
* task migration. If the cpu number is SN_HWPERF_ANY_CPU, then
* the current CPU is used. See the SN_HWPERF_ARG_* macros above.
*
* arg bitmap of ipi flag, cpu number and object id
* sz sizeof buffer pointed to by p
* p pointer to array of struct sn_hwperf_data
*/
#define SN_HWPERF_SET_MMRS (14|SN_HWPERF_OP_MEM_COPYIN)
#define SN_HWPERF_GET_MMRS (15|SN_HWPERF_OP_MEM_COPYOUT| \
SN_HWPERF_OP_MEM_COPYIN)
/*
* Lock a shared object
* arg object id
* sz don't care
* p don't care
*/
#define SN_HWPERF_ACQUIRE 16
/*
* Unlock a shared object
* arg object id
* sz don't care
* p don't care
*/
#define SN_HWPERF_RELEASE 17
/*
* Break a lock on a shared object
* arg object id
* sz don't care
* p don't care
*/
#define SN_HWPERF_FORCE_RELEASE 18
/*
* ioctl requests on "sn_hwperf" that do not call SAL
*/
/*
* get cpu info as an array of hwperf_object_info_t.
* id is logical CPU number, name is description, location
* is geoid (e.g. 001c04#1c). Special case if sz == 8,
* returns the required buffer size.
*
* arg don't care
* sz sizeof buffer pointed to by p
* p pointer to array of struct sn_hwperf_object_info
*/
#define SN_HWPERF_GET_CPU_INFO (100|SN_HWPERF_OP_MEM_COPYOUT)
/*
* Given an object id, return it's node number (aka cnode).
* arg object id
* sz 8
* p pointer to u64 integer
*/
#define SN_HWPERF_GET_OBJ_NODE (101|SN_HWPERF_OP_MEM_COPYOUT)
/*
* Given a node number (cnode), return it's nasid.
* arg ordinal node number (aka cnodeid)
* sz 8
* p pointer to u64 integer
*/
#define SN_HWPERF_GET_NODE_NASID (102|SN_HWPERF_OP_MEM_COPYOUT)
/*
* Given a node id, determine the id of the nearest node with CPUs
* and the id of the nearest node that has memory. The argument
* node would normally be a "headless" node, e.g. an "IO node".
* Return 0 on success.
*/
extern int sn_hwperf_get_nearest_node(cnodeid_t node,
cnodeid_t *near_mem, cnodeid_t *near_cpu);
/* return codes */
#define SN_HWPERF_OP_OK 0
#define SN_HWPERF_OP_NOMEM 1
#define SN_HWPERF_OP_NO_PERM 2
#define SN_HWPERF_OP_IO_ERROR 3
#define SN_HWPERF_OP_BUSY 4
#define SN_HWPERF_OP_RECONFIGURE 253
#define SN_HWPERF_OP_INVAL 254
int sn_topology_open(struct inode *inode, struct file *file);
int sn_topology_release(struct inode *inode, struct file *file);
#endif /* SN_HWPERF_H */
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