1/*
2 * Copyright 2007, Haiku Inc. All rights reserved.
3 * Distributed under the terms of the MIT License.
4 *
5 * Authors:
6 *	JiSheng Zhang
7 */
8
9#ifndef _FW_GLUE_H
10#define _FW_GLUE_H
11
12#include <stdint.h>
13#include <dpc.h>
14
15#define device_printf(dev, a...) dprintf("firewire:" a)
16#define printf(a...) dprintf(a)
17#define KASSERT(cond,msg) do { \
18	if (!cond) \
19		panic msg; \
20} while(0)
21
22#ifndef howmany
23#define howmany(x, y)   (((x)+((y)-1))/(y)) // x/y的上界
24#endif
25#define rounddown(x, y) (((x)/(y))*(y)) // 比x小，y的最大的倍数
26#define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))  /* to any y */ // 比x大，y的最小倍数
27#define roundup2(x, y)  (((x)+((y)-1))&(~((y)-1))) /* if y is powers of two */
28#define powerof2(x)     ((((x)-1)&(x))==0) // 是否是2的次方
29
30typedef uint32_t bus_addr_t;
31typedef uint32_t bus_size_t;
32
33#define atomic_readandclear_int(ptr) atomic_set((int32 *)(ptr), 0)
34#define atomic_set_int(ptr, value) atomic_or((int32 *)(ptr), value)
35
36#define mtx_lock mutex_lock
37#define mtx_unlock mutex_unlock
38#define mtx_destroy mutex_destroy
39#define mtx_init(lockaddr, name, type, opts) mutex_init(lockaddr, name)
40
41#define wakeup(i) release_sem_etc(i->Sem, 0, B_RELEASE_IF_WAITING_ONLY | B_RELEASE_ALL)
42
43#define splfw() 0
44#define splx(s) (void)s
45
46#define hz 1000000LL
47
48#define DELAY(n)	snooze(n)
49
50#define OWRITE(sc, offset, value) (*(volatile uint32 *)((char *)(sc->regAddr) + (offset)) = value)
51#define OREAD(sc, offset) (*(volatile uint32 *)((char *)(sc->regAddr) + (offset)))
52
53#define MAX_CARDS 4
54extern dpc_module_info *gDpc;
55
56#define	__offsetof(type, field)	((size_t)(&((type *)0)->field))
57
58#endif /*_FW_GLUE_H*/
59