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 #include <linux/completion.h> 48 49 /* 50 * Copy from/to user API 51 */ 52 #define copy_from_user(to, from, n) copyin((from), (to), (n)) 53 #define copy_to_user(to, from, n) copyout((from), (to), (n)) 54 55 /* 56 * Atomic API 57 */ 58 typedef volatile unsigned int atomic_t; 59 60 #define atomic_set(p, v) (*(p) = (v)) 61 #define atomic_read(p) (*(volatile int *)(p)) 62 #define atomic_inc(p) atomic_inc_uint(p) 63 #define atomic_dec(p) atomic_dec_uint(p) 64 #define atomic_dec_and_test(p) (atomic_dec_uint_nv(p) == 0) 65 #define atomic_inc_return(v) atomic_inc_uint_nv(v) 66 #define atomic_dec_return(v) atomic_dec_uint_nv(v) 67 #define atomic_add(v, p) atomic_add_int(p, v) 68 #define atomic_sub(v, p) atomic_add_int(p, -(v)) 69 #define atomic_add_return(v, p) atomic_add_int_nv(p, v) 70 #define atomic_sub_return(v, p) atomic_add_int_nv(p, -(v)) 71 #define atomic_xchg(p, v) atomic_swap_uint(p, v) 72 #define atomic_cmpxchg(p, oldv, newv) atomic_cas_uint(p, oldv, newv) 73 74 #define ATOMIC_INIT(v) (v) 75 76 /* 77 * Spinlock API 78 */ 79 typedef kmutex_t spinlock_t; 80 81 /* 82 * NB: Need to initialize these at attach time! 83 */ 84 #define DEFINE_SPINLOCK(name) kmutex_t name 85 86 #define spin_lock_init(lock) mutex_init(lock, MUTEX_DEFAULT, IPL_SCHED) 87 #define spin_lock_destroy(lock) mutex_destroy(lock) 88 #define spin_lock(lock) mutex_spin_enter(lock) 89 #define spin_unlock(lock) mutex_spin_exit(lock) 90 91 /* 92 * Mutex API 93 */ 94 struct mutex { 95 kmutex_t mtx; 96 }; 97 98 #define lmutex_init(lock) mutex_init(&(lock)->mtx, MUTEX_DEFAULT, IPL_NONE) 99 #define lmutex_destroy(lock) mutex_destroy(&(lock)->mtx) 100 #define lmutex_lock(lock) mutex_enter(&(lock)->mtx) 101 #define lmutex_lock_interruptible(lock) (mutex_enter(&(lock)->mtx),0) 102 #define lmutex_unlock(lock) mutex_exit(&(lock)->mtx) 103 104 /* 105 * Rwlock API 106 */ 107 typedef kmutex_t rwlock_t; 108 109 #define DEFINE_RWLOCK(name) kmutex_t name 110 111 #define rwlock_init(rwlock) mutex_init(rwlock, MUTEX_DEFAULT, IPL_SCHED) 112 #define read_lock(rwlock) mutex_spin_enter(rwlock) 113 #define read_unlock(rwlock) mutex_spin_exit(rwlock) 114 115 #define write_lock(rwlock) mutex_spin_enter(rwlock) 116 #define write_unlock(rwlock) mutex_spin_exit(rwlock) 117 118 #define read_lock_bh(rwlock) read_lock(rwlock) 119 #define read_unlock_bh(rwlock) read_unlock(rwlock) 120 #define write_lock_bh(rwlock) write_lock(rwlock) 121 #define write_unlock_bh(rwlock) write_unlock(rwlock) 122 123 /* 124 * Timer API 125 */ 126 struct timer_list { 127 kmutex_t mtx; 128 callout_t callout; 129 130 unsigned long expires; 131 void (*function)(unsigned long); 132 unsigned long data; 133 }; 134 135 void init_timer(struct timer_list *t); 136 void setup_timer(struct timer_list *t, void (*function)(unsigned long), unsigned long data); 137 void mod_timer(struct timer_list *t, unsigned long expires); 138 void add_timer(struct timer_list *t); 139 int del_timer(struct timer_list *t); 140 int del_timer_sync(struct timer_list *t); 141 142 /* 143 * Semaphore API 144 */ 145 struct semaphore { 146 kmutex_t mtx; 147 kcondvar_t cv; 148 int value; 149 int waiters; 150 }; 151 152 /* 153 * NB: Need to initialize these at attach time! 154 */ 155 #define DEFINE_SEMAPHORE(name) struct semaphore name 156 157 void sema_sysinit(void *arg); 158 void _sema_init(struct semaphore *s, int value); 159 void _sema_destroy(struct semaphore *s); 160 void down(struct semaphore *s); 161 int down_interruptible(struct semaphore *s); 162 int down_trylock(struct semaphore *s); 163 void up(struct semaphore *s); 164 165 /* 166 * Logging and assertions API 167 */ 168 void rlprintf(int pps, const char *fmt, ...) 169 __printflike(2, 3); 170 171 void 172 device_rlprintf(int pps, device_t dev, const char *fmt, ...) 173 __printflike(3, 4); 174 175 #define might_sleep() 176 177 #define WARN(condition, msg) \ 178 ({ \ 179 int __ret_warn_on = !!(condition); \ 180 if (unlikely(__ret_warn_on)) \ 181 printf((msg)); \ 182 unlikely(__ret_warn_on); \ 183 }) 184 185 186 187 #define WARN_ON(condition) \ 188 ({ \ 189 int __ret_warn_on = !!(condition); \ 190 if (unlikely(__ret_warn_on)) \ 191 printf("WARN_ON: " #condition "\n"); \ 192 unlikely(__ret_warn_on); \ 193 }) 194 195 #define WARN_ON_ONCE(condition) ({ \ 196 static int __warned; \ 197 int __ret_warn_once = !!(condition); \ 198 \ 199 if (unlikely(__ret_warn_once)) \ 200 if (WARN_ON(!__warned)) \ 201 __warned = 1; \ 202 unlikely(__ret_warn_once); \ 203 }) 204 205 #define BUG_ON(cond) \ 206 do { \ 207 if (cond) \ 208 panic("BUG_ON: " #cond); \ 209 } while (0) 210 211 #define BUG() \ 212 do { \ 213 panic("BUG: %s:%d", __FILE__, __LINE__); \ 214 } while (0) 215 216 #define vchiq_static_assert(cond) CTASSERT(cond) 217 218 #define KERN_EMERG "<0>" /* system is unusable */ 219 #define KERN_ALERT "<1>" /* action must be taken immediately */ 220 #define KERN_CRIT "<2>" /* critical conditions */ 221 #define KERN_ERR "<3>" /* error conditions */ 222 #define KERN_WARNING "<4>" /* warning conditions */ 223 #define KERN_NOTICE "<5>" /* normal but significant condition */ 224 #define KERN_INFO "<6>" /* informational */ 225 #define KERN_DEBUG "<7>" /* debug-level messages */ 226 #define KERN_CONT "" 227 228 #define printk(fmt, args...) printf(fmt, ##args) 229 #define vprintk(fmt, args) vprintf(fmt, args) 230 231 /* 232 * Malloc API 233 */ 234 #define GFP_KERNEL 0 235 #define GFP_ATOMIC 0 236 237 MALLOC_DECLARE(M_VCHI); 238 239 #define kmalloc(size, flags) malloc((size), M_VCHI, M_NOWAIT | M_ZERO) 240 #define kcalloc(n, size, flags) malloc((n) * (size), M_VCHI, M_NOWAIT | M_ZERO) 241 #define kzalloc(a, b) kcalloc(1, (a), (b)) 242 #define kfree(p) do { if (p) free(p, M_VCHI); } while (0) 243 244 /* 245 * Kernel module API 246 */ 247 #define __init 248 #define __exit 249 #define __devinit 250 #define __devexit 251 #define __devinitdata 252 253 /* 254 * Time API 255 */ 256 #if 1 257 /* emulate jiffies */ 258 static inline unsigned long 259 _jiffies(void) 260 { 261 struct timeval tv; 262 263 microuptime(&tv); 264 return tvtohz(&tv); 265 } 266 267 static inline unsigned long 268 msecs_to_jiffies(unsigned long msecs) 269 { 270 struct timeval tv; 271 272 tv.tv_sec = msecs / 1000000UL; 273 tv.tv_usec = msecs % 1000000UL; 274 return tvtohz(&tv); 275 } 276 277 #define jiffies _jiffies() 278 #else 279 #define jiffies ticks 280 #endif 281 #define HZ hz 282 283 #define udelay(usec) DELAY(usec) 284 #define mdelay(msec) DELAY((msec) * 1000) 285 286 #define schedule_timeout(jiff) kpause("dhdslp", false, jiff, NULL) 287 288 #if defined(msleep) 289 #undef msleep 290 #endif 291 #define msleep(msec) mdelay(msec) 292 293 #define time_after(a, b) ((a) > (b)) 294 #define time_after_eq(a, b) ((a) >= (b)) 295 #define time_before(a, b) time_after((b), (a)) 296 297 /* 298 * kthread API (we use lwp) 299 */ 300 typedef lwp_t * VCHIQ_THREAD_T; 301 302 VCHIQ_THREAD_T vchiq_thread_create(int (*threadfn)(void *data), 303 void *data, 304 const char namefmt[], ...); 305 void set_user_nice(VCHIQ_THREAD_T p, int nice); 306 void wake_up_process(VCHIQ_THREAD_T p); 307 308 /* 309 * Proc APIs 310 */ 311 void flush_signals(VCHIQ_THREAD_T); 312 int fatal_signal_pending(VCHIQ_THREAD_T); 313 314 /* 315 * Misc API 316 */ 317 318 #define __user 319 320 #define current curlwp 321 #define EXPORT_SYMBOL(x) 322 #define PAGE_ALIGN(addr) round_page(addr) 323 324 typedef void irqreturn_t; 325 typedef off_t loff_t; 326 327 #define BCM2835_MBOX_CHAN_VCHIQ 3 328 #define bcm_mbox_write bcmmbox_write 329 330 #define rmb membar_consumer 331 #define wmb membar_producer 332 #define dsb membar_producer 333 334 #define smp_mb membar_producer 335 #define smp_rmb membar_consumer 336 #define smp_wmb membar_producer 337 338 #define device_print_prettyname(dev) device_printf((dev), "") 339 340 #endif /* __VCHI_NETBSD_H__ */ 341