1 /*- 2 * Copyright (c) 2010 Max Khon <fjoe@freebsd.org> 3 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@bluezbox.com> 4 * Copyright (c) 2013 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #ifndef __VCHI_NETBSD_H__ 29 #define __VCHI_NETBSD_H__ 30 31 #include <sys/systm.h> 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/lock.h> 36 #include <sys/kernel.h> 37 #include <sys/kthread.h> 38 #include <sys/mutex.h> 39 #include <sys/malloc.h> 40 #include <sys/proc.h> 41 #include <sys/types.h> 42 #include <sys/ioccom.h> 43 #include <sys/atomic.h> 44 #include <sys/rwlock.h> 45 #include <sys/callout.h> 46 47 /* 48 * Copy from/to user API 49 */ 50 #define copy_from_user(to, from, n) copyin((from), (to), (n)) 51 #define copy_to_user(to, from, n) copyout((from), (to), (n)) 52 53 /* 54 * Bit API 55 */ 56 57 static __inline int 58 test_and_set_bit(int nr, volatile void *addr) 59 { 60 volatile uint32_t *val; 61 uint32_t mask, old; 62 63 val = (volatile uint32_t *)addr; 64 mask = 1 << nr; 65 66 do { 67 old = *val; 68 if ((old & mask) != 0) 69 break; 70 } while (atomic_cas_uint(val, old, old | mask) != old); 71 72 return old & mask; 73 } 74 75 static __inline__ int 76 test_and_clear_bit(int nr, volatile void *addr) 77 { 78 volatile uint32_t *val; 79 uint32_t mask, old; 80 81 val = (volatile uint32_t *)addr; 82 mask = 1 << nr; 83 84 do { 85 old = *val; 86 if ((old & mask) == 0) 87 break; 88 } while (atomic_cas_uint(val, old, old & ~mask) != old); 89 90 return old & mask; 91 } 92 93 /* 94 * Atomic API 95 */ 96 typedef volatile unsigned int atomic_t; 97 98 #define atomic_set(p, v) (*(p) = (v)) 99 #define atomic_read(p) (*(p)) 100 #define atomic_inc(p) atomic_inc_uint(p) 101 #define atomic_dec(p) atomic_dec_uint(p) 102 #define atomic_dec_and_test(p) (atomic_dec_uint_nv(p) == 0) 103 #define atomic_inc_return(v) atomic_inc_uint_nv(v) 104 #define atomic_dec_return(v) atomic_dec_uint_nv(v) 105 #define atomic_add(v, p) atomic_add_int(p, v) 106 #define atomic_sub(v, p) atomic_add_int(p, -(v)) 107 #define atomic_add_return(v, p) atomic_add_int_nv(p, v) 108 #define atomic_sub_return(v, p) atomic_add_int_nv(p, -(v)) 109 #define atomic_xchg(p, v) atomic_swap_uint(p, v) 110 #define atomic_cmpxchg(p, oldv, newv) atomic_cas_uint(p, oldv, newv) 111 112 #define ATOMIC_INIT(v) (v) 113 114 /* 115 * Spinlock API 116 */ 117 typedef kmutex_t spinlock_t; 118 119 /* 120 * NB: Need to initialize these at attach time! 121 */ 122 #define DEFINE_SPINLOCK(name) kmutex_t name 123 124 #define spin_lock_init(lock) mutex_init(lock, MUTEX_DEFAULT, IPL_VM) 125 #define spin_lock_destroy(lock) mutex_destroy(lock) 126 #define spin_lock(lock) mutex_spin_enter(lock) 127 #define spin_unlock(lock) mutex_spin_exit(lock) 128 #define spin_lock_bh(lock) spin_lock(lock) 129 #define spin_unlock_bh(lock) spin_unlock(lock) 130 #define spin_lock_irqsave(lock, flags) \ 131 do { \ 132 spin_lock(lock); \ 133 (void) &(flags); \ 134 } while (0) 135 #define spin_unlock_irqrestore(lock, flags) \ 136 spin_unlock(lock) 137 138 /* 139 * Mutex API 140 */ 141 struct mutex { 142 kmutex_t mtx; 143 }; 144 145 #define lmutex_init(lock) mutex_init(&(lock)->mtx, MUTEX_DEFAULT, IPL_NONE) 146 #define lmutex_destroy(lock) mutex_destroy(&(lock)->mtx) 147 #define lmutex_lock(lock) mutex_enter(&(lock)->mtx) 148 #define lmutex_lock_interruptible(lock) (mutex_enter(&(lock)->mtx),0) 149 #define lmutex_unlock(lock) mutex_exit(&(lock)->mtx) 150 151 /* 152 * Rwlock API 153 */ 154 typedef krwlock_t rwlock_t; 155 156 /* 157 * NB: Need to initialize these at attach time! 158 */ 159 #define DEFINE_RWLOCK(name) rwlock_t name 160 #define rwlock_init(rwlock) rw_init(rwlock) 161 #define read_lock(rwlock) rw_enter(rwlock, RW_READER) 162 #define read_unlock(rwlock) rw_exit(rwlock) 163 164 #define write_lock(rwlock) rw_enter(rwlock, RW_WRITER) 165 #define write_unlock(rwlock) rw_exit(rwlock) 166 #define write_lock_irqsave(rwlock, flags) \ 167 do { \ 168 write_lock(rwlock); \ 169 (void) &(flags); \ 170 } while (0) 171 #define write_unlock_irqrestore(rwlock, flags) \ 172 write_unlock(rwlock) 173 174 #define read_lock_bh(rwlock) read_lock(rwlock) 175 #define read_unlock_bh(rwlock) read_unlock(rwlock) 176 #define write_lock_bh(rwlock) write_lock(rwlock) 177 #define write_unlock_bh(rwlock) write_unlock(rwlock) 178 179 /* 180 * Timer API 181 */ 182 struct timer_list { 183 kmutex_t mtx; 184 callout_t callout; 185 186 unsigned long expires; 187 void (*function)(unsigned long); 188 unsigned long data; 189 }; 190 191 void init_timer(struct timer_list *t); 192 void setup_timer(struct timer_list *t, void (*function)(unsigned long), unsigned long data); 193 void mod_timer(struct timer_list *t, unsigned long expires); 194 void add_timer(struct timer_list *t); 195 int del_timer(struct timer_list *t); 196 int del_timer_sync(struct timer_list *t); 197 198 /* 199 * Completion API 200 */ 201 struct completion { 202 kcondvar_t cv; 203 kmutex_t lock; 204 int done; 205 }; 206 207 void init_completion(struct completion *c); 208 void destroy_completion(struct completion *c); 209 int try_wait_for_completion(struct completion *); 210 int wait_for_completion_interruptible(struct completion *); 211 int wait_for_completion_interruptible_timeout(struct completion *, unsigned long ticks); 212 int wait_for_completion_killable(struct completion *); 213 void wait_for_completion(struct completion *c); 214 int wait_for_completion_timeout(struct completion *c, unsigned long timeout); 215 void complete(struct completion *c); 216 void complete_all(struct completion *c); 217 218 #define INIT_COMPLETION(x) do {(x).done = 0;} while(0) 219 220 /* 221 * Semaphore API 222 */ 223 struct semaphore { 224 kmutex_t mtx; 225 kcondvar_t cv; 226 int value; 227 int waiters; 228 }; 229 230 /* 231 * NB: Need to initialize these at attach time! 232 */ 233 #define DEFINE_SEMAPHORE(name) struct semaphore name 234 235 void sema_sysinit(void *arg); 236 void _sema_init(struct semaphore *s, int value); 237 void _sema_destroy(struct semaphore *s); 238 void down(struct semaphore *s); 239 int down_interruptible(struct semaphore *s); 240 int down_trylock(struct semaphore *s); 241 void up(struct semaphore *s); 242 243 /* 244 * Logging and assertions API 245 */ 246 void rlprintf(int pps, const char *fmt, ...) 247 __printflike(2, 3); 248 249 void 250 device_rlprintf(int pps, device_t dev, const char *fmt, ...) 251 __printflike(3, 4); 252 253 #define might_sleep() 254 255 #define WARN(condition, msg) \ 256 ({ \ 257 int __ret_warn_on = !!(condition); \ 258 if (unlikely(__ret_warn_on)) \ 259 printf((msg)); \ 260 unlikely(__ret_warn_on); \ 261 }) 262 263 264 265 #define WARN_ON(condition) \ 266 ({ \ 267 int __ret_warn_on = !!(condition); \ 268 if (unlikely(__ret_warn_on)) \ 269 printf("WARN_ON: " #condition "\n"); \ 270 unlikely(__ret_warn_on); \ 271 }) 272 273 #define WARN_ON_ONCE(condition) ({ \ 274 static int __warned; \ 275 int __ret_warn_once = !!(condition); \ 276 \ 277 if (unlikely(__ret_warn_once)) \ 278 if (WARN_ON(!__warned)) \ 279 __warned = 1; \ 280 unlikely(__ret_warn_once); \ 281 }) 282 283 #define BUG_ON(cond) \ 284 do { \ 285 if (cond) \ 286 panic("BUG_ON: " #cond); \ 287 } while (0) 288 289 #define BUG() \ 290 do { \ 291 panic("BUG: %s:%d", __FILE__, __LINE__); \ 292 } while (0) 293 294 #define vchiq_static_assert(cond) CTASSERT(cond) 295 296 #define KERN_EMERG "<0>" /* system is unusable */ 297 #define KERN_ALERT "<1>" /* action must be taken immediately */ 298 #define KERN_CRIT "<2>" /* critical conditions */ 299 #define KERN_ERR "<3>" /* error conditions */ 300 #define KERN_WARNING "<4>" /* warning conditions */ 301 #define KERN_NOTICE "<5>" /* normal but significant condition */ 302 #define KERN_INFO "<6>" /* informational */ 303 #define KERN_DEBUG "<7>" /* debug-level messages */ 304 #define KERN_CONT "" 305 306 #define printk(fmt, args...) printf(fmt, ##args) 307 #define vprintk(fmt, args) vprintf(fmt, args) 308 309 /* 310 * Malloc API 311 */ 312 #define GFP_KERNEL 0 313 #define GFP_ATOMIC 0 314 315 MALLOC_DECLARE(M_VCHI); 316 317 #define kmalloc(size, flags) malloc((size), M_VCHI, M_NOWAIT | M_ZERO) 318 #define kcalloc(n, size, flags) malloc((n) * (size), M_VCHI, M_NOWAIT | M_ZERO) 319 #define kzalloc(a, b) kcalloc(1, (a), (b)) 320 #define kfree(p) do { if (p) free(p, M_VCHI); } while (0) 321 322 /* 323 * Kernel module API 324 */ 325 #define __init 326 #define __exit 327 #define __devinit 328 #define __devexit 329 #define __devinitdata 330 331 /* 332 * Time API 333 */ 334 #if 1 335 /* emulate jiffies */ 336 static inline unsigned long _jiffies(void) 337 { 338 struct timeval tv; 339 340 microuptime(&tv); 341 return tvtohz(&tv); 342 } 343 344 static inline unsigned long msecs_to_jiffies(unsigned long msecs) 345 { 346 struct timeval tv; 347 348 tv.tv_sec = msecs / 1000000UL; 349 tv.tv_usec = msecs % 1000000UL; 350 return tvtohz(&tv); 351 } 352 353 #define jiffies _jiffies() 354 #else 355 #define jiffies ticks 356 #endif 357 #define HZ hz 358 359 #define udelay(usec) DELAY(usec) 360 #define mdelay(msec) DELAY((msec) * 1000) 361 362 #define schedule_timeout(jiff) kpause("dhdslp", false, jiff, NULL) 363 364 #if defined(msleep) 365 #undef msleep 366 #endif 367 #define msleep(msec) mdelay(msec) 368 369 #define time_after(a, b) ((a) > (b)) 370 #define time_after_eq(a, b) ((a) >= (b)) 371 #define time_before(a, b) time_after((b), (a)) 372 373 /* 374 * kthread API (we use proc) 375 */ 376 typedef lwp_t * VCHIQ_THREAD_T; 377 378 VCHIQ_THREAD_T vchiq_thread_create(int (*threadfn)(void *data), 379 void *data, 380 const char namefmt[], ...); 381 void set_user_nice(VCHIQ_THREAD_T p, int nice); 382 void wake_up_process(VCHIQ_THREAD_T p); 383 384 /* 385 * Proc APIs 386 */ 387 void flush_signals(VCHIQ_THREAD_T); 388 int fatal_signal_pending(VCHIQ_THREAD_T); 389 390 /* 391 * Misc API 392 */ 393 394 #define __user 395 396 #define likely(x) __builtin_expect(!!(x), 1) 397 #define unlikely(x) __builtin_expect(!!(x), 0) 398 #define current curlwp 399 #define EXPORT_SYMBOL(x) 400 #define PAGE_ALIGN(addr) round_page(addr) 401 402 typedef void irqreturn_t; 403 typedef off_t loff_t; 404 405 #define BCM2835_MBOX_CHAN_VCHIQ 3 406 #define bcm_mbox_write bcmmbox_write 407 408 #define rmb membar_consumer 409 #define wmb membar_producer 410 #define dsb membar_producer 411 412 #define device_print_prettyname(dev) device_printf((dev), "") 413 414 #endif /* __VCHI_NETBSD_H__ */ 415