drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgv100.c

   1 /*
   2  * Copyright 2018 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 #include "channv50.h"
  23
  24 #include <core/ramht.h>
  25 #include <subdev/timer.h>
  26
  27 static int
  28 gv100_disp_dmac_idle(struct nv50_disp_chan *chan)
  29 {
  30         struct nvkm_device *device = chan->disp->base.engine.subdev.device;
  31         const u32 soff = (chan->chid.ctrl - 1) * 0x04;
  32         nvkm_msec(device, 2000,
  33                 u32 stat = nvkm_rd32(device, 0x610664 + soff);
  34                 if ((stat & 0x000f0000) == 0x00040000)
  35                         return 0;
  36         );
  37         return -EBUSY;
  38 }
  39
  40 int
  41 gv100_disp_dmac_bind(struct nv50_disp_chan *chan,
  42                      struct nvkm_object *object, u32 handle)
  43 {
  44         return nvkm_ramht_insert(chan->disp->ramht, object,
  45                                  chan->chid.user, -9, handle,
  46                                  chan->chid.user << 25 | 0x00000040);
  47 }
  48
  49 void
  50 gv100_disp_dmac_fini(struct nv50_disp_chan *chan)
  51 {
  52         struct nvkm_device *device = chan->disp->base.engine.subdev.device;
  53         const u32 coff = chan->chid.ctrl * 0x04;
  54         nvkm_mask(device, 0x6104e0 + coff, 0x00000010, 0x00000000);
  55         gv100_disp_dmac_idle(chan);
  56         nvkm_mask(device, 0x6104e0 + coff, 0x00000002, 0x00000000);
  57 }
  58
  59 int
  60 gv100_disp_dmac_init(struct nv50_disp_chan *chan)
  61 {
  62         struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
  63         struct nvkm_device *device = subdev->device;
  64         const u32 uoff = (chan->chid.ctrl - 1) * 0x1000;
  65         const u32 poff = chan->chid.ctrl * 0x10;
  66         const u32 coff = chan->chid.ctrl * 0x04;
  67
  68         nvkm_wr32(device, 0x610b24 + poff, lower_32_bits(chan->push));
  69         nvkm_wr32(device, 0x610b20 + poff, upper_32_bits(chan->push));
  70         nvkm_wr32(device, 0x610b28 + poff, 0x00000001);
  71         nvkm_wr32(device, 0x610b2c + poff, 0x00000040);
  72
  73         nvkm_mask(device, 0x6104e0 + coff, 0x00000010, 0x00000010);
  74         nvkm_wr32(device, 0x690000 + uoff, 0x00000000);
  75         nvkm_wr32(device, 0x6104e0 + coff, 0x00000013);
  76         return gv100_disp_dmac_idle(chan);
  77 }