415 lines
10 KiB
C
415 lines
10 KiB
C
/*-
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* Copyright (c) 2010 Max Khon <fjoe@freebsd.org>
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* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@bluezbox.com>
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* Copyright (c) 2013 Jared D. McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __VCHI_NETBSD_H__
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#define __VCHI_NETBSD_H__
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#include <sys/systm.h>
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/lock.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/mutex.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/types.h>
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#include <sys/ioccom.h>
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#include <sys/atomic.h>
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#include <sys/rwlock.h>
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#include <sys/callout.h>
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/*
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* Copy from/to user API
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*/
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#define copy_from_user(to, from, n) copyin((from), (to), (n))
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#define copy_to_user(to, from, n) copyout((from), (to), (n))
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/*
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* Bit API
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*/
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static __inline int
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test_and_set_bit(int nr, volatile void *addr)
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{
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volatile uint32_t *val;
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uint32_t mask, old;
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val = (volatile uint32_t *)addr;
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mask = 1 << nr;
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do {
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old = *val;
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if ((old & mask) != 0)
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break;
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} while (atomic_cas_uint(val, old, old | mask) != old);
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return old & mask;
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}
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static __inline__ int
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test_and_clear_bit(int nr, volatile void *addr)
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{
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volatile uint32_t *val;
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uint32_t mask, old;
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val = (volatile uint32_t *)addr;
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mask = 1 << nr;
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do {
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old = *val;
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if ((old & mask) == 0)
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break;
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} while (atomic_cas_uint(val, old, old & ~mask) != old);
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return old & mask;
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}
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/*
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* Atomic API
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*/
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typedef volatile unsigned int atomic_t;
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#define atomic_set(p, v) (*(p) = (v))
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#define atomic_read(p) (*(p))
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#define atomic_inc(p) atomic_inc_uint(p)
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#define atomic_dec(p) atomic_dec_uint(p)
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#define atomic_dec_and_test(p) (atomic_dec_uint_nv(p) == 0)
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#define atomic_inc_return(v) atomic_inc_uint_nv(v)
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#define atomic_dec_return(v) atomic_dec_uint_nv(v)
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#define atomic_add(v, p) atomic_add_int(p, v)
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#define atomic_sub(v, p) atomic_add_int(p, -(v))
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#define atomic_add_return(v, p) atomic_add_int_nv(p, v)
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#define atomic_sub_return(v, p) atomic_add_int_nv(p, -(v))
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#define atomic_xchg(p, v) atomic_swap_uint(p, v)
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#define atomic_cmpxchg(p, oldv, newv) atomic_cas_uint(p, oldv, newv)
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#define ATOMIC_INIT(v) (v)
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/*
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* Spinlock API
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*/
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typedef kmutex_t spinlock_t;
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/*
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* NB: Need to initialize these at attach time!
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*/
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#define DEFINE_SPINLOCK(name) kmutex_t name
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#define spin_lock_init(lock) mutex_init(lock, MUTEX_DEFAULT, IPL_VM)
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#define spin_lock_destroy(lock) mutex_destroy(lock)
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#define spin_lock(lock) mutex_spin_enter(lock)
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#define spin_unlock(lock) mutex_spin_exit(lock)
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#define spin_lock_bh(lock) spin_lock(lock)
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#define spin_unlock_bh(lock) spin_unlock(lock)
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#define spin_lock_irqsave(lock, flags) \
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do { \
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spin_lock(lock); \
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(void) &(flags); \
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} while (0)
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#define spin_unlock_irqrestore(lock, flags) \
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spin_unlock(lock)
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/*
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* Mutex API
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*/
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struct mutex {
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kmutex_t mtx;
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};
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#define lmutex_init(lock) mutex_init(&(lock)->mtx, MUTEX_DEFAULT, IPL_NONE)
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#define lmutex_destroy(lock) mutex_destroy(&(lock)->mtx)
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#define lmutex_lock(lock) mutex_enter(&(lock)->mtx)
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#define lmutex_lock_interruptible(lock) (mutex_enter(&(lock)->mtx),0)
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#define lmutex_unlock(lock) mutex_exit(&(lock)->mtx)
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/*
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* Rwlock API
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*/
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typedef krwlock_t rwlock_t;
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/*
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* NB: Need to initialize these at attach time!
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*/
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#define DEFINE_RWLOCK(name) rwlock_t name
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#define rwlock_init(rwlock) rw_init(rwlock)
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#define read_lock(rwlock) rw_enter(rwlock, RW_READER)
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#define read_unlock(rwlock) rw_exit(rwlock)
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#define write_lock(rwlock) rw_enter(rwlock, RW_WRITER)
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#define write_unlock(rwlock) rw_exit(rwlock)
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#define write_lock_irqsave(rwlock, flags) \
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do { \
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write_lock(rwlock); \
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(void) &(flags); \
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} while (0)
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#define write_unlock_irqrestore(rwlock, flags) \
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write_unlock(rwlock)
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#define read_lock_bh(rwlock) read_lock(rwlock)
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#define read_unlock_bh(rwlock) read_unlock(rwlock)
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#define write_lock_bh(rwlock) write_lock(rwlock)
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#define write_unlock_bh(rwlock) write_unlock(rwlock)
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/*
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* Timer API
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*/
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struct timer_list {
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kmutex_t mtx;
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callout_t callout;
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unsigned long expires;
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void (*function)(unsigned long);
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unsigned long data;
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};
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void init_timer(struct timer_list *t);
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void setup_timer(struct timer_list *t, void (*function)(unsigned long), unsigned long data);
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void mod_timer(struct timer_list *t, unsigned long expires);
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void add_timer(struct timer_list *t);
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int del_timer(struct timer_list *t);
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int del_timer_sync(struct timer_list *t);
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/*
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* Completion API
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*/
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struct completion {
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kcondvar_t cv;
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kmutex_t lock;
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int done;
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};
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void init_completion(struct completion *c);
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void destroy_completion(struct completion *c);
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int try_wait_for_completion(struct completion *);
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int wait_for_completion_interruptible(struct completion *);
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int wait_for_completion_interruptible_timeout(struct completion *, unsigned long ticks);
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int wait_for_completion_killable(struct completion *);
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void wait_for_completion(struct completion *c);
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int wait_for_completion_timeout(struct completion *c, unsigned long timeout);
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void complete(struct completion *c);
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void complete_all(struct completion *c);
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#define INIT_COMPLETION(x) do {(x).done = 0;} while(0)
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/*
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* Semaphore API
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*/
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struct semaphore {
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kmutex_t mtx;
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kcondvar_t cv;
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int value;
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int waiters;
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};
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/*
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* NB: Need to initialize these at attach time!
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*/
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#define DEFINE_SEMAPHORE(name) struct semaphore name
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void sema_sysinit(void *arg);
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void _sema_init(struct semaphore *s, int value);
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void _sema_destroy(struct semaphore *s);
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void down(struct semaphore *s);
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int down_interruptible(struct semaphore *s);
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int down_trylock(struct semaphore *s);
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void up(struct semaphore *s);
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/*
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* Logging and assertions API
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*/
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void rlprintf(int pps, const char *fmt, ...)
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__printflike(2, 3);
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void
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device_rlprintf(int pps, device_t dev, const char *fmt, ...)
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__printflike(3, 4);
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#define might_sleep()
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#define WARN(condition, msg) \
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({ \
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int __ret_warn_on = !!(condition); \
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if (unlikely(__ret_warn_on)) \
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printf((msg)); \
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unlikely(__ret_warn_on); \
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})
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#define WARN_ON(condition) \
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({ \
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int __ret_warn_on = !!(condition); \
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if (unlikely(__ret_warn_on)) \
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printf("WARN_ON: " #condition "\n"); \
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unlikely(__ret_warn_on); \
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})
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#define WARN_ON_ONCE(condition) ({ \
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static int __warned; \
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int __ret_warn_once = !!(condition); \
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\
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if (unlikely(__ret_warn_once)) \
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if (WARN_ON(!__warned)) \
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__warned = 1; \
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unlikely(__ret_warn_once); \
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})
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#define BUG_ON(cond) \
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do { \
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if (cond) \
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panic("BUG_ON: " #cond); \
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} while (0)
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#define BUG() \
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do { \
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panic("BUG: %s:%d", __FILE__, __LINE__); \
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} while (0)
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#define vchiq_static_assert(cond) CTASSERT(cond)
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#define KERN_EMERG "<0>" /* system is unusable */
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#define KERN_ALERT "<1>" /* action must be taken immediately */
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#define KERN_CRIT "<2>" /* critical conditions */
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#define KERN_ERR "<3>" /* error conditions */
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#define KERN_WARNING "<4>" /* warning conditions */
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#define KERN_NOTICE "<5>" /* normal but significant condition */
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#define KERN_INFO "<6>" /* informational */
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#define KERN_DEBUG "<7>" /* debug-level messages */
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#define KERN_CONT ""
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#define printk(fmt, args...) printf(fmt, ##args)
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#define vprintk(fmt, args) vprintf(fmt, args)
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/*
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* Malloc API
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*/
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#define GFP_KERNEL 0
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#define GFP_ATOMIC 0
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MALLOC_DECLARE(M_VCHI);
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#define kmalloc(size, flags) malloc((size), M_VCHI, M_NOWAIT | M_ZERO)
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#define kcalloc(n, size, flags) malloc((n) * (size), M_VCHI, M_NOWAIT | M_ZERO)
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#define kzalloc(a, b) kcalloc(1, (a), (b))
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#define kfree(p) do { if (p) free(p, M_VCHI); } while (0)
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/*
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* Kernel module API
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*/
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#define __init
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#define __exit
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#define __devinit
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#define __devexit
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#define __devinitdata
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/*
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* Time API
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*/
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#if 1
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/* emulate jiffies */
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static inline unsigned long _jiffies(void)
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{
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struct timeval tv;
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microuptime(&tv);
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return tvtohz(&tv);
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}
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static inline unsigned long msecs_to_jiffies(unsigned long msecs)
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{
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struct timeval tv;
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tv.tv_sec = msecs / 1000000UL;
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tv.tv_usec = msecs % 1000000UL;
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return tvtohz(&tv);
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}
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#define jiffies _jiffies()
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#else
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#define jiffies ticks
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#endif
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#define HZ hz
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#define udelay(usec) DELAY(usec)
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#define mdelay(msec) DELAY((msec) * 1000)
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#define schedule_timeout(jiff) kpause("dhdslp", false, jiff, NULL)
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#if defined(msleep)
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#undef msleep
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#endif
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#define msleep(msec) mdelay(msec)
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#define time_after(a, b) ((a) > (b))
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#define time_after_eq(a, b) ((a) >= (b))
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#define time_before(a, b) time_after((b), (a))
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/*
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* kthread API (we use proc)
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*/
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typedef lwp_t * VCHIQ_THREAD_T;
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VCHIQ_THREAD_T vchiq_thread_create(int (*threadfn)(void *data),
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void *data,
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const char namefmt[], ...);
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void set_user_nice(VCHIQ_THREAD_T p, int nice);
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void wake_up_process(VCHIQ_THREAD_T p);
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/*
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* Proc APIs
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*/
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void flush_signals(VCHIQ_THREAD_T);
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int fatal_signal_pending(VCHIQ_THREAD_T);
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/*
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* Misc API
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*/
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#define __user
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define current curlwp
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#define EXPORT_SYMBOL(x)
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#define PAGE_ALIGN(addr) round_page(addr)
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typedef void irqreturn_t;
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typedef off_t loff_t;
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#define BCM2835_MBOX_CHAN_VCHIQ 3
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#define bcm_mbox_write bcmmbox_write
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#define rmb membar_consumer
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#define wmb membar_producer
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#define dsb membar_producer
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#define device_print_prettyname(dev) device_printf((dev), "")
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#endif /* __VCHI_NETBSD_H__ */
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