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#ifndef _FW_GLUE_H
9#define _FW_GLUE_H
10
11
12#include <dpc.h>
13#include <stdint.h>
14#include <strings.h>
15
16
17#define device_printf(dev, a...) dprintf("firewire:" a)
18#define printf(a...) dprintf(a)
19#define KASSERT(cond,msg) do { \
20	if (!cond) \
21		panic msg; \
22} while(0)
23
24#ifndef howmany
25#define howmany(x, y)   (((x)+((y)-1))/(y)) // x/y的上界
26#endif
27#define rounddown(x, y) (((x)/(y))*(y)) // 比x小，y的最大的倍数
28#define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))  /* to any y */ // 比x大，y的最小倍数
29#define roundup2(x, y)  (((x)+((y)-1))&(~((y)-1))) /* if y is powers of two */
30#define powerof2(x)     ((((x)-1)&(x))==0) // 是否是2的次方
31
32typedef uint32_t bus_addr_t;
33typedef uint32_t bus_size_t;
34
35#define atomic_readandclear_int(ptr) atomic_get_and_set((int32*)(ptr), 0)
36#define atomic_set_int(ptr, value) atomic_or((int32 *)(ptr), value)
37
38#define mtx_lock mutex_lock
39#define mtx_unlock mutex_unlock
40#define mtx_destroy mutex_destroy
41#define mtx_init(lockaddr, name, type, opts) mutex_init(lockaddr, name)
42
43#define wakeup(i) release_sem_etc(i->Sem, 0, B_RELEASE_IF_WAITING_ONLY | B_RELEASE_ALL)
44
45#define splfw() 0
46#define splx(s) (void)s
47
48#define hz 1000000LL
49
50#define DELAY(n)	snooze(n)
51
52#define OWRITE(sc, offset, value) (*(volatile uint32 *)((char *)(sc->regAddr) + (offset)) = value)
53#define OREAD(sc, offset) (*(volatile uint32 *)((char *)(sc->regAddr) + (offset)))
54
55#define MAX_CARDS 4
56extern dpc_module_info *gDpc;
57
58#define	__offsetof(type, field)	((size_t)(&((type *)0)->field))
59
60#endif /*_FW_GLUE_H*/
61