headers/private/firewire/fwglue.h

   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*/