LXR linux/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
  27static int
  28gv100_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
  40int
  41gv100_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
  49void
  50gv100_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
  59int
  60gv100_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}
  78