include/splat-ctl.h

   1 #ifndef _SPLAT_CTL_H
   2 #define _SPLAY_CTL_H
   3
   4 #ifdef _KERNEL
   5 #include <asm/ioctls.h>
   6 #include <asm/uaccess.h>
   7 #include <linux/list.h>
   8 #endif /* _KERNEL */
   9
  10 #define KZT_VERSION                     "v1.0"
  11 #define KZT_VERSION_SIZE                64
  12
  13 #define KZT_MAJOR                       229 /* XXX - Arbitrary */
  14 #define KZT_MINORS                      1
  15 #define KZT_DEV                         "/dev/kztctl"
  16
  17 #define KZT_NAME_SIZE                   12
  18 #define KZT_DESC_SIZE                   60
  19
  20 typedef struct kzt_user {
  21         char name[KZT_NAME_SIZE];       /* short name */
  22         char desc[KZT_DESC_SIZE];       /* short description */
  23         int id;                         /* unique numeric id */
  24 } kzt_user_t;
  25
  26 #define KZT_CFG_MAGIC                   0x15263748U
  27 typedef struct kzt_cfg {
  28         unsigned int cfg_magic;         /* Unique magic */
  29         int cfg_cmd;                    /* Config command */
  30         int cfg_arg1;                   /* Config command arg 1 */
  31         int cfg_rc1;                    /* Config response 1 */
  32         union {
  33                 struct {
  34                         int size;
  35                         kzt_user_t descs[0];
  36                 } kzt_subsystems;
  37                 struct {
  38                         int size;
  39                         kzt_user_t descs[0];
  40                 } kzt_tests;
  41         } cfg_data;
  42 } kzt_cfg_t;
  43
  44 #define KZT_CMD_MAGIC                   0x9daebfc0U
  45 typedef struct kzt_cmd {
  46         unsigned int cmd_magic;         /* Unique magic */
  47         int cmd_subsystem;              /* Target subsystem */
  48         int cmd_test;                   /* Subsystem test */
  49         int cmd_data_size;              /* Extra opaque data */
  50         char cmd_data_str[0];           /* Opaque data region */
  51 } kzt_cmd_t;
  52
  53 /* Valid ioctls */
  54 #define KZT_CFG                         _IOWR('f', 101, long)
  55 #define KZT_CMD                         _IOWR('f', 102, long)
  56
  57 /* Valid configuration commands */
  58 #define KZT_CFG_BUFFER_CLEAR            0x001   /* Clear text buffer */
  59 #define KZT_CFG_BUFFER_SIZE             0x002   /* Resize text buffer */
  60 #define KZT_CFG_SUBSYSTEM_COUNT         0x101   /* Number of subsystem */
  61 #define KZT_CFG_SUBSYSTEM_LIST          0x102   /* List of N subsystems */
  62 #define KZT_CFG_TEST_COUNT              0x201   /* Number of tests */
  63 #define KZT_CFG_TEST_LIST               0x202   /* List of N tests */
  64
  65 /* Valid subsystem and test commands defined in each subsystem, we do
  66  * need to be careful to avoid colisions.  That alone may argue to define
  67  * them all here, for now we just define the global error codes.
  68  */
  69 #define KZT_SUBSYSTEM_UNKNOWN           0xF00
  70 #define KZT_TEST_UNKNOWN                0xFFF
  71
  72
  73 #ifdef _KERNEL
  74 #define KZT_SUBSYSTEM_INIT(type)                                        \
  75 ({      kzt_subsystem_t *_sub_;                                         \
  76                                                                         \
  77         _sub_ = (kzt_subsystem_t *)kzt_##type##_init();                 \
  78         if (_sub_ == NULL) {                                            \
  79                 printk(KERN_ERR "Error initializing: " #type "\n");     \
  80         } else {                                                        \
  81                 spin_lock(&kzt_module_lock);                            \
  82                 list_add_tail(&(_sub_->subsystem_list),                 \
  83                               &kzt_module_list);                        \
  84                 spin_unlock(&kzt_module_lock);                          \
  85         }                                                               \
  86 })
  87
  88 #define KZT_SUBSYSTEM_FINI(type)                                        \
  89 ({      kzt_subsystem_t *_sub_, *_tmp_;                                 \
  90         int _id_, _flag_ = 0;                                           \
  91                                                                         \
  92         _id_ = kzt_##type##_id();                                       \
  93         spin_lock(&kzt_module_lock);                                    \
  94         list_for_each_entry_safe(_sub_, _tmp_,  &kzt_module_list,       \
  95                                  subsystem_list) {                      \
  96                 if (_sub_->desc.id == _id_) {                           \
  97                         list_del_init(&(_sub_->subsystem_list));        \
  98                         spin_unlock(&kzt_module_lock);                  \
  99                         kzt_##type##_fini(_sub_);                       \
 100                         spin_lock(&kzt_module_lock);                    \
 101                         _flag_ = 1;                                     \
 102                 }                                                       \
 103         }                                                               \
 104         spin_unlock(&kzt_module_lock);                                  \
 105                                                                         \
 106         if (!_flag_)                                                    \
 107                 printk(KERN_ERR "Error finalizing: " #type "\n");       \
 108 })
 109
 110 #define KZT_TEST_INIT(sub, n, d, tid, func)                             \
 111 ({      kzt_test_t *_test_;                                             \
 112                                                                         \
 113         _test_ = (kzt_test_t *)kmalloc(sizeof(*_test_), GFP_KERNEL);    \
 114         if (_test_ == NULL) {                                           \
 115                 printk(KERN_ERR "Error initializing: " n "/" #tid" \n");\
 116         } else {                                                        \
 117                 memset(_test_, 0, sizeof(*_test_));                     \
 118                 strncpy(_test_->desc.name, n, KZT_NAME_SIZE);           \
 119                 strncpy(_test_->desc.desc, d, KZT_DESC_SIZE);           \
 120                 _test_->desc.id = tid;                                  \
 121                 _test_->test = func;                                    \
 122                 INIT_LIST_HEAD(&(_test_->test_list));                   \
 123                 spin_lock(&((sub)->test_lock));                         \
 124                 list_add_tail(&(_test_->test_list),&((sub)->test_list));\
 125                 spin_unlock(&((sub)->test_lock));                       \
 126         }                                                               \
 127 })
 128
 129 #define KZT_TEST_FINI(sub, tid)                                         \
 130 ({      kzt_test_t *_test_, *_tmp_;                                     \
 131         int _flag_ = 0;                                                 \
 132                                                                         \
 133         spin_lock(&((sub)->test_lock));                                 \
 134         list_for_each_entry_safe(_test_, _tmp_,                         \
 135                                  &((sub)->test_list), test_list) {      \
 136                 if (_test_->desc.id == tid) {                           \
 137                         list_del_init(&(_test_->test_list));            \
 138                         _flag_ = 1;                                     \
 139                 }                                                       \
 140         }                                                               \
 141         spin_unlock(&((sub)->test_lock));                               \
 142                                                                         \
 143         if (!_flag_)                                                    \
 144                 printk(KERN_ERR "Error finalizing: " #tid "\n");        \
 145 })
 146
 147 typedef int (*kzt_test_func_t)(struct file *, void *);
 148
 149 typedef struct kzt_test {
 150         struct list_head test_list;
 151         kzt_user_t desc;
 152         kzt_test_func_t test;
 153 } kzt_test_t;
 154
 155 typedef struct kzt_subsystem {
 156         struct list_head subsystem_list;/* List had to chain entries */
 157         kzt_user_t desc;
 158         spinlock_t test_lock;
 159         struct list_head test_list;
 160 } kzt_subsystem_t;
 161
 162 #define KZT_INFO_BUFFER_SIZE            65536
 163 #define KZT_INFO_BUFFER_REDZONE         256
 164
 165 typedef struct kzt_info {
 166         spinlock_t info_lock;
 167         int info_size;
 168         char *info_buffer;
 169         char *info_head;        /* Internal kernel use only */
 170 } kzt_info_t;
 171
 172 #define sym2str(sym)                    (char *)(#sym)
 173
 174 #define kzt_print(file, format, args...)                                \
 175 ({      kzt_info_t *_info_ = (kzt_info_t *)file->private_data;          \
 176         int _rc_;                                                       \
 177                                                                         \
 178         ASSERT(_info_);                                                 \
 179         ASSERT(_info_->info_buffer);                                    \
 180                                                                         \
 181         spin_lock(&_info_->info_lock);                                  \
 182                                                                         \
 183         /* Don't allow the kernel to start a write in the red zone */   \
 184         if ((int)(_info_->info_head - _info_->info_buffer) >            \
 185             (KZT_INFO_BUFFER_SIZE -KZT_INFO_BUFFER_REDZONE)) {          \
 186                 _rc_ = -EOVERFLOW;                                      \
 187         } else {                                                        \
 188                 _rc_ = sprintf(_info_->info_head, format, args);        \
 189                 if (_rc_ >= 0)                                          \
 190                         _info_->info_head += _rc_;                      \
 191         }                                                               \
 192                                                                         \
 193         spin_unlock(&_info_->info_lock);                                \
 194         _rc_;                                                           \
 195 })
 196
 197 #define kzt_vprint(file, test, format, args...)                         \
 198         kzt_print(file, "%*s: " format, KZT_NAME_SIZE, test, args)
 199
 200 kzt_subsystem_t * kzt_condvar_init(void);
 201 kzt_subsystem_t * kzt_kmem_init(void);
 202 kzt_subsystem_t * kzt_mutex_init(void);
 203 kzt_subsystem_t * kzt_krng_init(void);
 204 kzt_subsystem_t * kzt_rwlock_init(void);
 205 kzt_subsystem_t * kzt_taskq_init(void);
 206 kzt_subsystem_t * kzt_thread_init(void);
 207 kzt_subsystem_t * kzt_time_init(void);
 208
 209 #endif /* _KERNEL */
 210
 211 #endif /* _SPLAY_CTL_H */