include/splat-ctl.h

   1 /*
   2  *  This file is part of the SPL: Solaris Porting Layer.
   3  *
   4  *  Copyright (c) 2008 Lawrence Livermore National Security, LLC.
   5  *  Produced at Lawrence Livermore National Laboratory
   6  *  Written by:
   7  *          Brian Behlendorf <behlendorf1@llnl.gov>,
   8  *          Herb Wartens <wartens2@llnl.gov>,
   9  *          Jim Garlick <garlick@llnl.gov>
  10  *  UCRL-CODE-235197
  11  *
  12  *  This is free software; you can redistribute it and/or modify it
  13  *  under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; either version 2 of the License, or
  15  *  (at your option) any later version.
  16  *
  17  *  This is distributed in the hope that it will be useful, but WITHOUT
  18  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20  *  for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License along
  23  *  with this program; if not, write to the Free Software Foundation, Inc.,
  24  *  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
  25  */
  26
  27 #ifndef _SPLAT_CTL_H
  28 #define _SPLAT_CTL_H
  29
  30 /* Contains shared definitions which both the userspace
  31  * and kernelspace portions of splat must agree on.
  32  */
  33
  34 #define SPLAT_MAJOR                     225 /* XXX - Arbitrary */
  35 #define SPLAT_MINORS                    1
  36 #define SPLAT_NAME                      "splatctl"
  37 #define SPLAT_DEV                       "/dev/splatctl"
  38
  39 #define SPLAT_NAME_SIZE                 20
  40 #define SPLAT_DESC_SIZE                 60
  41
  42 typedef struct splat_user {
  43         char name[SPLAT_NAME_SIZE];     /* short name */
  44         char desc[SPLAT_DESC_SIZE];     /* short description */
  45         int id;                         /* unique numeric id */
  46 } splat_user_t;
  47
  48 #define SPLAT_CFG_MAGIC                 0x15263748U
  49 typedef struct splat_cfg {
  50         unsigned int cfg_magic;         /* Unique magic */
  51         int cfg_cmd;                    /* Config command */
  52         int cfg_arg1;                   /* Config command arg 1 */
  53         int cfg_rc1;                    /* Config response 1 */
  54         union {
  55                 struct {
  56                         int size;
  57                         splat_user_t descs[0];
  58                 } splat_subsystems;
  59                 struct {
  60                         int size;
  61                         splat_user_t descs[0];
  62                 } splat_tests;
  63         } cfg_data;
  64 } splat_cfg_t;
  65
  66 #define SPLAT_CMD_MAGIC                 0x9daebfc0U
  67 typedef struct splat_cmd {
  68         unsigned int cmd_magic;         /* Unique magic */
  69         int cmd_subsystem;              /* Target subsystem */
  70         int cmd_test;                   /* Subsystem test */
  71         int cmd_data_size;              /* Extra opaque data */
  72         char cmd_data_str[0];           /* Opaque data region */
  73 } splat_cmd_t;
  74
  75 /* Valid ioctls */
  76 #define SPLAT_CFG                               _IOWR('f', 101, long)
  77 #define SPLAT_CMD                               _IOWR('f', 102, long)
  78
  79 /* Valid configuration commands */
  80 #define SPLAT_CFG_BUFFER_CLEAR          0x001   /* Clear text buffer */
  81 #define SPLAT_CFG_BUFFER_SIZE           0x002   /* Resize text buffer */
  82 #define SPLAT_CFG_SUBSYSTEM_COUNT       0x101   /* Number of subsystem */
  83 #define SPLAT_CFG_SUBSYSTEM_LIST        0x102   /* List of N subsystems */
  84 #define SPLAT_CFG_TEST_COUNT            0x201   /* Number of tests */
  85 #define SPLAT_CFG_TEST_LIST             0x202   /* List of N tests */
  86
  87 /* Valid subsystem and test commands defined in each subsystem, we do
  88  * need to be careful to avoid colisions.  That alone may argue to define
  89  * them all here, for now we just define the global error codes.
  90  */
  91 #define SPLAT_SUBSYSTEM_UNKNOWN         0xF00
  92 #define SPLAT_TEST_UNKNOWN              0xFFF
  93
  94 #endif /* _SPLAT_CTL_H */