uspace/drv/nic/rtl8139/general.h

   1 /*
   2  * Copyright (c) 2011 Jiri Michalec
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @file
  30  *
  31  * General functions and structures used in rtl8139 driver
  32  */
  33
  34 #ifndef RTL8139_GENERAL_H_
  35 #define RTL8139_GENERAL_H_
  36
  37 #include <stddef.h>
  38 #include <time.h>
  39
  40 /** Number of microseconds in second */
  41 #define RTL8139_USEC_IN_SEC  1000000
  42
  43 /** Structure for HW timer control */
  44 typedef struct {
  45         /** Register value set in the last timer period */
  46         uint32_t last_val;
  47
  48         /** Register value set in the common timer period */
  49         uint32_t full_val;
  50
  51         /** Amount of full register periods in timer period */
  52         size_t full_skips;
  53
  54         /** Remaining full register periods to the next period end */
  55         size_t full_skips_remains;
  56
  57         /** Mark if there is a last run */
  58         int last_run;
  59 } rtl8139_timer_act_t;
  60
  61 extern void *rtl8139_memcpy_wrapped(void *, const void *, size_t, size_t,
  62     size_t);
  63 extern int rtl8139_timer_act_init(rtl8139_timer_act_t *, uint32_t,
  64     const struct timeval *);
  65 extern int rtl8139_timer_act_step(rtl8139_timer_act_t *, uint32_t *);
  66
  67 #endif