drivers/gpu/drm/nouveau/core/subdev/timer/base.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #include "subdev/timer.h"
  26
  27 bool
  28 nouveau_timer_wait_eq(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
  29 {
  30         struct nouveau_timer *ptimer = nouveau_timer(obj);
  31         u64 time0;
  32
  33         time0 = ptimer->read(ptimer);
  34         do {
  35                 if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
  36                         if ((nv_rd32(obj, addr) & mask) == data)
  37                                 return true;
  38                 } else {
  39                         if ((nv_ro32(obj, addr) & mask) == data)
  40                                 return true;
  41                 }
  42         } while (ptimer->read(ptimer) - time0 < nsec);
  43
  44         return false;
  45 }
  46
  47 bool
  48 nouveau_timer_wait_ne(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
  49 {
  50         struct nouveau_timer *ptimer = nouveau_timer(obj);
  51         u64 time0;
  52
  53         time0 = ptimer->read(ptimer);
  54         do {
  55                 if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
  56                         if ((nv_rd32(obj, addr) & mask) != data)
  57                                 return true;
  58                 } else {
  59                         if ((nv_ro32(obj, addr) & mask) != data)
  60                                 return true;
  61                 }
  62         } while (ptimer->read(ptimer) - time0 < nsec);
  63
  64         return false;
  65 }
  66
  67 bool
  68 nouveau_timer_wait_cb(void *obj, u64 nsec, bool (*func)(void *), void *data)
  69 {
  70         struct nouveau_timer *ptimer = nouveau_timer(obj);
  71         u64 time0;
  72
  73         time0 = ptimer->read(ptimer);
  74         do {
  75                 if (func(data) == true)
  76                         return true;
  77         } while (ptimer->read(ptimer) - time0 < nsec);
  78
  79         return false;
  80 }
  81
  82 void
  83 nouveau_timer_alarm(void *obj, u32 nsec, struct nouveau_alarm *alarm)
  84 {
  85         struct nouveau_timer *ptimer = nouveau_timer(obj);
  86         ptimer->alarm(ptimer, nsec, alarm);
  87 }
  88
  89 void
  90 nouveau_timer_alarm_cancel(void *obj, struct nouveau_alarm *alarm)
  91 {
  92         struct nouveau_timer *ptimer = nouveau_timer(obj);
  93         ptimer->alarm_cancel(ptimer, alarm);
  94 }