xref: /haiku/headers/private/firewire/fwglue.h (revision 1e60bdeab63fa7a57bc9a55b032052e95a18bd2c)
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 
32 typedef uint32_t bus_addr_t;
33 typedef 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
56 extern dpc_module_info *gDpc;
57 
58 #define	__offsetof(type, field)	((size_t)(&((type *)0)->field))
59 
60 #endif /*_FW_GLUE_H*/
61