drivers/gpu/drm/nouveau/nvkm/engine/disp/piocnv50.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 #include "channv50.h"
  25 #include "rootnv50.h"
  26
  27 #include <subdev/timer.h>
  28
  29 static void
  30 nv50_disp_pioc_fini(struct nv50_disp_chan *chan)
  31 {
  32         struct nv50_disp *disp = chan->root->disp;
  33         struct nvkm_subdev *subdev = &disp->base.engine.subdev;
  34         struct nvkm_device *device = subdev->device;
  35         int ctrl = chan->chid.ctrl;
  36         int user = chan->chid.user;
  37
  38         nvkm_mask(device, 0x610200 + (ctrl * 0x10), 0x00000001, 0x00000000);
  39         if (nvkm_msec(device, 2000,
  40                 if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x00030000))
  41                         break;
  42         ) < 0) {
  43                 nvkm_error(subdev, "ch %d timeout: %08x\n", user,
  44                            nvkm_rd32(device, 0x610200 + (ctrl * 0x10)));
  45         }
  46 }
  47
  48 static int
  49 nv50_disp_pioc_init(struct nv50_disp_chan *chan)
  50 {
  51         struct nv50_disp *disp = chan->root->disp;
  52         struct nvkm_subdev *subdev = &disp->base.engine.subdev;
  53         struct nvkm_device *device = subdev->device;
  54         int ctrl = chan->chid.ctrl;
  55         int user = chan->chid.user;
  56
  57         nvkm_wr32(device, 0x610200 + (ctrl * 0x10), 0x00002000);
  58         if (nvkm_msec(device, 2000,
  59                 if (!(nvkm_rd32(device, 0x610200 + (ctrl * 0x10)) & 0x00030000))
  60                         break;
  61         ) < 0) {
  62                 nvkm_error(subdev, "ch %d timeout0: %08x\n", user,
  63                            nvkm_rd32(device, 0x610200 + (ctrl * 0x10)));
  64                 return -EBUSY;
  65         }
  66
  67         nvkm_wr32(device, 0x610200 + (ctrl * 0x10), 0x00000001);
  68         if (nvkm_msec(device, 2000,
  69                 u32 tmp = nvkm_rd32(device, 0x610200 + (ctrl * 0x10));
  70                 if ((tmp & 0x00030000) == 0x00010000)
  71                         break;
  72         ) < 0) {
  73                 nvkm_error(subdev, "ch %d timeout1: %08x\n", user,
  74                            nvkm_rd32(device, 0x610200 + (ctrl * 0x10)));
  75                 return -EBUSY;
  76         }
  77
  78         return 0;
  79 }
  80
  81 const struct nv50_disp_chan_func
  82 nv50_disp_pioc_func = {
  83         .init = nv50_disp_pioc_init,
  84         .fini = nv50_disp_pioc_fini,
  85 };