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 vchiq_static_assert(cond) CTASSERT(cond) 177 178 /* 179 * Kernel module API 180 */ 181 #define __init 182 #define __exit 183 #define __devinit 184 #define __devexit 185 #define __devinitdata 186 187 /* 188 * Time API 189 */ 190 #if 1 191 /* emulate jiffies */ 192 static inline unsigned long 193 _jiffies(void) 194 { 195 struct timeval tv; 196 197 microuptime(&tv); 198 return tvtohz(&tv); 199 } 200 201 static inline unsigned long 202 msecs_to_jiffies(unsigned long msecs) 203 { 204 struct timeval tv; 205 206 tv.tv_sec = msecs / 1000000UL; 207 tv.tv_usec = msecs % 1000000UL; 208 return tvtohz(&tv); 209 } 210 211 #define jiffies _jiffies() 212 #else 213 #define jiffies ticks 214 #endif 215 #define HZ hz 216 217 #define udelay(usec) DELAY(usec) 218 #define mdelay(msec) DELAY((msec) * 1000) 219 220 #define schedule_timeout(jiff) kpause("dhdslp", false, jiff, NULL) 221 222 #if defined(msleep) 223 #undef msleep 224 #endif 225 #define msleep(msec) mdelay(msec) 226 227 #define time_after(a, b) ((a) > (b)) 228 #define time_after_eq(a, b) ((a) >= (b)) 229 #define time_before(a, b) time_after((b), (a)) 230 231 /* 232 * kthread API (we use lwp) 233 */ 234 typedef lwp_t * VCHIQ_THREAD_T; 235 236 VCHIQ_THREAD_T vchiq_thread_create(int (*threadfn)(void *data), 237 void *data, 238 const char namefmt[], ...); 239 void set_user_nice(VCHIQ_THREAD_T p, int nice); 240 void wake_up_process(VCHIQ_THREAD_T p); 241 242 /* 243 * Proc APIs 244 */ 245 void flush_signals(VCHIQ_THREAD_T); 246 int fatal_signal_pending(VCHIQ_THREAD_T); 247 248 /* 249 * Misc API 250 */ 251 252 #define __user 253 254 #define current curlwp 255 #define PAGE_ALIGN(addr) round_page(addr) 256 257 typedef void irqreturn_t; 258 typedef off_t loff_t; 259 260 #define BCM2835_MBOX_CHAN_VCHIQ 3 261 #define bcm_mbox_write bcmmbox_write 262 263 #define device_print_prettyname(dev) device_printf((dev), "") 264 265 #endif /* __VCHI_NETBSD_H__ */ 266