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