LXR linux/drivers/misc/sgi-gru/grulib.h

   1/*
   2 *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
   3 *
   4 *  This program is free software; you can redistribute it and/or modify
   5 *  it under the terms of the GNU Lesser General Public License as published by
   6 *  the Free Software Foundation; either version 2.1 of the License, or
   7 *  (at your option) any later version.
   8 *
   9 *  This program is distributed in the hope that it will be useful,
  10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 *  GNU Lesser General Public License for more details.
  13 *
  14 *  You should have received a copy of the GNU Lesser General Public License
  15 *  along with this program; if not, write to the Free Software
  16 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17 */
  18
  19#ifndef __GRULIB_H__
  20#define __GRULIB_H__
  21
  22#define GRU_BASENAME            "gru"
  23#define GRU_FULLNAME            "/dev/gru"
  24#define GRU_IOCTL_NUM            'G'
  25
  26/*
  27 * Maximum number of GRU segments that a user can have open
  28 * ZZZ temp - set high for testing. Revisit.
  29 */
  30#define GRU_MAX_OPEN_CONTEXTS           32
  31
  32/* Set Number of Request Blocks */
  33#define GRU_CREATE_CONTEXT              _IOWR(GRU_IOCTL_NUM, 1, void *)
  34
  35/*  Set Context Options */
  36#define GRU_SET_CONTEXT_OPTION          _IOWR(GRU_IOCTL_NUM, 4, void *)
  37
  38/* Fetch exception detail */
  39#define GRU_USER_GET_EXCEPTION_DETAIL   _IOWR(GRU_IOCTL_NUM, 6, void *)
  40
  41/* For user call_os handling - normally a TLB fault */
  42#define GRU_USER_CALL_OS                _IOWR(GRU_IOCTL_NUM, 8, void *)
  43
  44/* For user unload context */
  45#define GRU_USER_UNLOAD_CONTEXT         _IOWR(GRU_IOCTL_NUM, 9, void *)
  46
  47/* For dumpping GRU chiplet state */
  48#define GRU_DUMP_CHIPLET_STATE          _IOWR(GRU_IOCTL_NUM, 11, void *)
  49
  50/* For getting gseg statistics */
  51#define GRU_GET_GSEG_STATISTICS         _IOWR(GRU_IOCTL_NUM, 12, void *)
  52
  53/* For user TLB flushing (primarily for tests) */
  54#define GRU_USER_FLUSH_TLB              _IOWR(GRU_IOCTL_NUM, 50, void *)
  55
  56/* Get some config options (primarily for tests & emulator) */
  57#define GRU_GET_CONFIG_INFO             _IOWR(GRU_IOCTL_NUM, 51, void *)
  58
  59/* Various kernel self-tests */
  60#define GRU_KTEST                       _IOWR(GRU_IOCTL_NUM, 52, void *)
  61
  62#define CONTEXT_WINDOW_BYTES(th)        (GRU_GSEG_PAGESIZE * (th))
  63#define THREAD_POINTER(p, th)           (p + GRU_GSEG_PAGESIZE * (th))
  64#define GSEG_START(cb)                  ((void *)((unsigned long)(cb) & ~(GRU_GSEG_PAGESIZE - 1)))
  65
  66struct gru_get_gseg_statistics_req {
  67        unsigned long                   gseg;
  68        struct gru_gseg_statistics      stats;
  69};
  70
  71/*
  72 * Structure used to pass TLB flush parameters to the driver
  73 */
  74struct gru_create_context_req {
  75        unsigned long           gseg;
  76        unsigned int            data_segment_bytes;
  77        unsigned int            control_blocks;
  78        unsigned int            maximum_thread_count;
  79        unsigned int            options;
  80        unsigned char           tlb_preload_count;
  81};
  82
  83/*
  84 * Structure used to pass unload context parameters to the driver
  85 */
  86struct gru_unload_context_req {
  87        unsigned long   gseg;
  88};
  89
  90/*
  91 * Structure used to set context options
  92 */
  93enum {sco_gseg_owner, sco_cch_req_slice, sco_blade_chiplet};
  94struct gru_set_context_option_req {
  95        unsigned long   gseg;
  96        int             op;
  97        int             val0;
  98        long            val1;
  99};
 100
 101/*
 102 * Structure used to pass TLB flush parameters to the driver
 103 */
 104struct gru_flush_tlb_req {
 105        unsigned long   gseg;
 106        unsigned long   vaddr;
 107        size_t          len;
 108};
 109
 110/*
 111 * Structure used to pass TLB flush parameters to the driver
 112 */
 113enum {dcs_pid, dcs_gid};
 114struct gru_dump_chiplet_state_req {
 115        unsigned int    op;
 116        unsigned int    gid;
 117        int             ctxnum;
 118        char            data_opt;
 119        char            lock_cch;
 120        char            flush_cbrs;
 121        char            fill[10];
 122        pid_t           pid;
 123        void            *buf;
 124        size_t          buflen;
 125        /* ---- output --- */
 126        unsigned int    num_contexts;
 127};
 128
 129#define GRU_DUMP_MAGIC  0x3474ab6c
 130struct gru_dump_context_header {
 131        unsigned int    magic;
 132        unsigned int    gid;
 133        unsigned char   ctxnum;
 134        unsigned char   cbrcnt;
 135        unsigned char   dsrcnt;
 136        pid_t           pid;
 137        unsigned long   vaddr;
 138        int             cch_locked;
 139        unsigned long   data[0];
 140};
 141
 142/*
 143 * GRU configuration info (temp - for testing)
 144 */
 145struct gru_config_info {
 146        int             cpus;
 147        int             blades;
 148        int             nodes;
 149        int             chiplets;
 150        int             fill[16];
 151};
 152
 153#endif /* __GRULIB_H__ */
 154