pscnv/bsd_support.h

   1 // Note: Need to change /sys/conf/kmod.conf for FreeBSD
   2 // set CSTD to gnu99 to enable support for nameless unions/structs
   3
   4 // Some headers used from /sys/ofed/include which all bear the following copyright:
   5 /*-
   6  * Copyright (c) 2010 Isilon Systems, Inc.
   7  * Copyright (c) 2010 iX Systems, Inc.
   8  * Copyright (c) 2010 Panasas, Inc.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice unmodified, this list of conditions, and the following
  16  *    disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/param.h>
  34 #include <sys/types.h>
  35 #include <sys/lock.h>
  36 #include <sys/mutex.h>
  37 #include <sys/limits.h>
  38 #include <sys/kdb.h>
  39 #include "drmP.h"
  40
  41 #define PSCNV_KAPI_GETPARAM_BUS_TYPE
  42
  43 typedef DRM_SPINTYPE spinlock_t;
  44
  45 #ifndef cpu_to_le16
  46 #define cpu_to_le16(x) htole16(x)
  47 #define le16_to_cpu(x) le16toh(x)
  48 #endif
  49
  50 #define spin_lock_init(lock) DRM_SPININIT(lock, #lock)
  51 #define spin_lock_destroy(lock) DRM_SPINUNINIT(lock)
  52 #define spin_lock(lock) DRM_SPINLOCK(lock)
  53 #define spin_unlock(lock) DRM_SPINUNLOCK(lock)
  54 #define spin_lock_irqsave(lock, flags) DRM_SPINLOCK_IRQSAVE(lock, flags)
  55 #define spin_unlock_irqrestore(lock, flags) DRM_SPINUNLOCK_IRQRESTORE(lock, flags)
  56
  57 #define kfree(x) drm_free(x, 0, DRM_MEM_DRIVER)
  58 #define kzalloc(x, y) drm_calloc(x, 1, DRM_MEM_DRIVER)
  59 #define kcalloc(x, y, z) drm_calloc(x, y, DRM_MEM_DRIVER)
  60 #define kmalloc(x, y) drm_alloc(x, DRM_MEM_DRIVER)
  61
  62 struct device_attribute {};
  63 struct notifier_block {};
  64 typedef struct pm_message_t { } pm_message_t;
  65 struct fb_info;
  66 struct fb_copyarea;
  67 struct fb_fillrect;
  68 struct fb_image;
  69
  70 struct vm_fault {};
  71 struct vm_area_struct {};
  72
  73 #ifndef HZ
  74 #define HZ hz
  75 #endif
  76
  77 #define power_supply_is_system_supplied() 1
  78
  79 /* Dog slow version, but only called once
  80  * Linux kernel has a faster software fallback
  81  * but I prefer not to GPL this or even worry about it
  82  */
  83 static inline u32 hweight32(u32 val)
  84 {
  85         u32 i, ret = 0;
  86         for (i = 1; i; i <<= 1)
  87                 if (val & i)
  88                         ++ret;
  89         return ret;
  90 }
  91
  92 #define WARN(x, arg1, args...) do { \
  93                 if (!(x)) break; \
  94                 printf("%s:%d/%s " arg1, \
  95                         __FILE__, __LINE__, __FUNCTION__, ##args); \
  96                 kdb_backtrace(); \
  97         } while (0)
  98 #define BUG() panic("BUG()\n");
  99 #define WARN_ON(x,y,z...) do { if ((x)) WARN(y, ##z); } while (0)
 100 #define BUG_ON(x) do { if ((x)) { panic(#x "triggered\n"); } } while (0)
 101
 102 #ifndef __must_check
 103 #define __must_check
 104 #endif
 105
 106 #ifndef _LINUX_DELAY_H_
 107 #define _LINUX_DELAY_H_
 108
 109 static inline void
 110 linux_msleep(int ms)
 111 {
 112         pause("lnxsleep", msecs_to_jiffies(ms));
 113 }
 114
 115 #undef msleep
 116 #define msleep  linux_msleep
 117 #define udelay(x) DELAY((x))
 118 #define mdelay(x) DELAY((x) * 1000)
 119
 120 #endif  /* _LINUX_DELAY_H_ */
 121
 122 #ifndef _LINUX_MUTEX_H_
 123 #define _LINUX_MUTEX_H_
 124
 125 #include <sys/param.h>
 126 #include <sys/lock.h>
 127 #include <sys/sx.h>
 128
 129 typedef struct mutex {
 130         struct sx sx;
 131 } mutex_t;
 132
 133 #define mutex_lock(_m)                  sx_xlock(&(_m)->sx)
 134 #define mutex_lock_nested(_m, _s)       mutex_lock(_m)
 135 #define mutex_lock_interruptible(_m)    ({ mutex_lock((_m)); 0; })
 136 #define mutex_unlock(_m)                sx_xunlock(&(_m)->sx)
 137 #define mutex_trylock(_m)               !!sx_try_xlock(&(_m)->sx)
 138
 139 #define DEFINE_MUTEX(lock)                                              \
 140         mutex_t lock;                                                   \
 141         SX_SYSINIT_FLAGS(lock, &(lock).sx, "lnxmtx", SX_NOWITNESS)
 142
 143 static inline void
 144 linux_mutex_init(mutex_t *m)
 145 {
 146
 147         memset(&m->sx, 0, sizeof(m->sx));
 148         sx_init_flags(&m->sx, "lnxmtx",  SX_NOWITNESS);
 149 }
 150
 151 #define mutex_init      linux_mutex_init
 152
 153 #endif  /* _LINUX_MUTEX_H_ */
 154
 155 #ifndef _LINUX_TIMER_H_
 156 #define _LINUX_TIMER_H_
 157
 158 #include <sys/param.h>
 159 #include <sys/kernel.h>
 160 #include <sys/callout.h>
 161
 162 struct timer_list {
 163         struct callout  timer_callout;
 164         void            (*function)(unsigned long);
 165         unsigned long   data;
 166 };
 167
 168 #define expires timer_callout.c_time
 169
 170 static inline void
 171 _timer_fn(void *context)
 172 {
 173         struct timer_list *timer;
 174
 175         timer = context;
 176         timer->function(timer->data);
 177 }
 178
 179 #define setup_timer(timer, func, dat)                                   \
 180 do {                                                                    \
 181         (timer)->function = (func);                                     \
 182         (timer)->data = (dat);                                          \
 183         callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE);          \
 184 } while (0)
 185
 186 #define init_timer(timer)                                               \
 187 do {                                                                    \
 188         (timer)->function = NULL;                                       \
 189         (timer)->data = 0;                                              \
 190         callout_init(&(timer)->timer_callout, CALLOUT_MPSAFE);          \
 191 } while (0)
 192
 193 #define mod_timer(timer, expire)                                        \
 194         callout_reset(&(timer)->timer_callout, (expire) - jiffies,      \
 195             _timer_fn, (timer))
 196
 197 #define add_timer(timer)                                                \
 198         callout_reset(&(timer)->timer_callout,                          \
 199             (timer)->timer_callout.c_time - jiffies, _timer_fn, (timer))
 200
 201 #define del_timer(timer)        callout_stop(&(timer)->timer_callout)
 202 #define del_timer_sync(timer)   callout_drain(&(timer)->timer_callout)
 203
 204 #define timer_pending(timer)    callout_pending(&(timer)->timer_callout)
 205
 206 static inline unsigned long
 207 round_jiffies(unsigned long j)
 208 {
 209         return roundup(j, hz);
 210 }
 211
 212 #endif /* _LINUX_TIMER_H_ */
 213
 214 #ifndef _LINUX_WORKQUEUE_H_
 215 #define _LINUX_WORKQUEUE_H_
 216
 217 #include <sys/taskqueue.h>
 218
 219 struct workqueue_struct {
 220         struct taskqueue        *taskqueue;
 221 };
 222
 223 struct work_struct {
 224         struct  task            work_task;
 225         struct  taskqueue       *taskqueue;
 226         void                    (*fn)(struct work_struct *);
 227 };
 228
 229 struct delayed_work {
 230         struct work_struct      work;
 231         struct callout          timer;
 232 };
 233
 234 static inline struct delayed_work *
 235 to_delayed_work(struct work_struct *work)
 236 {
 237
 238         return container_of(work, struct delayed_work, work);
 239 }
 240
 241
 242 static inline void
 243 _work_fn(void *context, int pending)
 244 {
 245         struct work_struct *work;
 246
 247         work = context;
 248         work->fn(work);
 249 }
 250
 251 #define INIT_WORK(work, func)                                           \
 252 do {                                                                    \
 253         (work)->fn = (func);                                            \
 254         (work)->taskqueue = NULL;                                       \
 255         TASK_INIT(&(work)->work_task, 0, _work_fn, (work));             \
 256 } while (0)
 257
 258 #define INIT_DELAYED_WORK(_work, func)                                  \
 259 do {                                                                    \
 260         INIT_WORK(&(_work)->work, func);                                \
 261         callout_init(&(_work)->timer, CALLOUT_MPSAFE);                  \
 262 } while (0)
 263
 264 #define INIT_DELAYED_WORK_DEFERRABLE    INIT_DELAYED_WORK
 265
 266 #define schedule_work(work)                                             \
 267 do {                                                                    \
 268         (work)->taskqueue = taskqueue_thread;                           \
 269         taskqueue_enqueue(taskqueue_thread, &(work)->work_task);        \
 270 } while (0)
 271
 272 #define flush_scheduled_work()  flush_taskqueue(taskqueue_thread)
 273
 274 #define queue_work(q, work)                                             \
 275 do {                                                                    \
 276         (work)->taskqueue = (q)->taskqueue;                             \
 277         taskqueue_enqueue((q)->taskqueue, &(work)->work_task);          \
 278 } while (0)
 279
 280 static inline void
 281 _delayed_work_fn(void *arg)
 282 {
 283         struct delayed_work *work;
 284
 285         work = arg;
 286         taskqueue_enqueue(work->work.taskqueue, &work->work.work_task);
 287 }
 288
 289 static inline int
 290 queue_delayed_work(struct workqueue_struct *wq, struct delayed_work *work,
 291     unsigned long delay)
 292 {
 293         int pending;
 294
 295         pending = work->work.work_task.ta_pending;
 296         work->work.taskqueue = wq->taskqueue;
 297         if (delay != 0)
 298                 callout_reset(&work->timer, delay, _delayed_work_fn, work);
 299         else
 300                 _delayed_work_fn((void *)work);
 301
 302         return (!pending);
 303 }
 304
 305 static inline struct workqueue_struct *
 306 _create_workqueue_common(char *name, int cpus)
 307 {
 308         struct workqueue_struct *wq;
 309
 310         wq = kmalloc(sizeof(*wq), M_WAITOK);
 311         wq->taskqueue = taskqueue_create((name), M_WAITOK,
 312             taskqueue_thread_enqueue,  &wq->taskqueue);
 313         taskqueue_start_threads(&wq->taskqueue, cpus, PWAIT, (name));
 314
 315         return (wq);
 316 }
 317
 318
 319 #define create_singlethread_workqueue(name)                             \
 320         _create_workqueue_common(name, 1)
 321
 322 #define create_workqueue(name)                                          \
 323         _create_workqueue_common(name, MAXCPU)
 324
 325 static inline void
 326 destroy_workqueue(struct workqueue_struct *wq)
 327 {
 328         taskqueue_free(wq->taskqueue);
 329         kfree(wq);
 330 }
 331
 332 #define flush_workqueue(wq)     flush_taskqueue((wq)->taskqueue)
 333
 334 static inline void
 335 _flush_fn(void *context, int pending)
 336 {
 337 }
 338
 339 static inline void
 340 flush_taskqueue(struct taskqueue *tq)
 341 {
 342         struct task flushtask;
 343
 344         PHOLD(curproc);
 345         TASK_INIT(&flushtask, 0, _flush_fn, NULL);
 346         taskqueue_enqueue(tq, &flushtask);
 347         taskqueue_drain(tq, &flushtask);
 348         PRELE(curproc);
 349 }
 350
 351 static inline int
 352 cancel_work_sync(struct work_struct *work)
 353 {
 354         if (work->taskqueue &&
 355             taskqueue_cancel(work->taskqueue, &work->work_task, NULL))
 356                 taskqueue_drain(work->taskqueue, &work->work_task);
 357         return 0;
 358 }
 359
 360 /*
 361  * This may leave work running on another CPU as it does on Linux.
 362  */
 363 static inline int
 364 cancel_delayed_work(struct delayed_work *work)
 365 {
 366
 367         callout_stop(&work->timer);
 368         if (work->work.taskqueue &&
 369             taskqueue_cancel(work->work.taskqueue, &work->work.work_task, NULL))
 370                 taskqueue_drain(work->work.taskqueue, &work->work.work_task);
 371         return 0;
 372 }
 373
 374 #endif  /* _LINUX_WORKQUEUE_H_ */
 375
 376 #ifndef _LINUX_KREF_H_
 377 #define _LINUX_KREF_H_
 378
 379 #include <sys/refcount.h>
 380
 381 struct kref {
 382         volatile u_int count;
 383 };
 384
 385 static inline void
 386 kref_init(struct kref *kref)
 387 {
 388
 389         refcount_init(&kref->count, 1);
 390 }
 391
 392 static inline void
 393 kref_get(struct kref *kref)
 394 {
 395
 396         refcount_acquire(&kref->count);
 397 }
 398
 399 static inline int
 400 kref_put(struct kref *kref, void (*rel)(struct kref *kref))
 401 {
 402
 403         if (refcount_release(&kref->count)) {
 404                 rel(kref);
 405                 return 1;
 406         }
 407         return 0;
 408 }
 409
 410 #endif /* _KREF_H_ */
 411
 412 #ifndef _LINUX_LOG2_H_
 413 #define _LINUX_LOG2_H_
 414
 415 #include <sys/libkern.h>
 416
 417 static inline unsigned long
 418 roundup_pow_of_two(unsigned long x)
 419 {
 420         return (1UL << flsl(x - 1));
 421 }
 422
 423 static inline int
 424 is_power_of_2(unsigned long n)
 425 {
 426         return (n == roundup_pow_of_two(n));
 427 }
 428
 429 static inline unsigned long
 430 rounddown_pow_of_two(unsigned long x)
 431 {
 432         return (1UL << (flsl(x) - 1));
 433 }
 434
 435 static inline unsigned long
 436 ilog2(unsigned long x)
 437 {
 438         return (flsl(x) - 1);
 439 }
 440
 441 #endif  /* _LINUX_LOG2_H_ */
 442
 443 #define EREMOTEIO ENXIO
 444
 445 #ifndef _LINUX_ERR_H_
 446 #define _LINUX_ERR_H_
 447
 448 #define MAX_ERRNO       4095
 449
 450 #define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO)
 451
 452 static inline void *
 453 ERR_PTR(long error)
 454 {
 455         return (void *)error;
 456 }
 457
 458 static inline long
 459 PTR_ERR(const void *ptr)
 460 {
 461         return (long)ptr;
 462 }
 463
 464 static inline long
 465 IS_ERR(const void *ptr)
 466 {
 467         return IS_ERR_VALUE((unsigned long)ptr);
 468 }
 469
 470 static inline void *
 471 ERR_CAST(void *ptr)
 472 {
 473         return (void *)ptr;
 474 }
 475
 476 #endif  /* _LINUX_ERR_H_ */
 477
 478 // Not defined inside _LINUX_WORKQUEUE_H_ header
 479 static inline int
 480 work_pending(struct work_struct *work)
 481 {
 482         return to_delayed_work(work)->work.work_task.ta_pending;
 483 }