LXR linux/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacgf119.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
  26#include <core/ramht.h>
  27#include <subdev/timer.h>
  28
  29int
  30gf119_disp_dmac_bind(struct nv50_disp_chan *chan,
  31                     struct nvkm_object *object, u32 handle)
  32{
  33        return nvkm_ramht_insert(chan->disp->ramht, object,
  34                                 chan->chid.user, -9, handle,
  35                                 chan->chid.user << 27 | 0x00000001);
  36}
  37
  38void
  39gf119_disp_dmac_fini(struct nv50_disp_chan *chan)
  40{
  41        struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
  42        struct nvkm_device *device = subdev->device;
  43        int ctrl = chan->chid.ctrl;
  44        int user = chan->chid.user;
  45
  46        /* deactivate channel */
  47        nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00001010, 0x00001000);
  48        nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00000003, 0x00000000);
  49        if (nvkm_msec(device, 2000,
  50                if (!(nvkm_rd32(device, 0x610490 + (ctrl * 0x10)) & 0x001e0000))
  51                        break;
  52        ) < 0) {
  53                nvkm_error(subdev, "ch %d fini: %08x\n", user,
  54                           nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
  55        }
  56}
  57
  58static int
  59gf119_disp_dmac_init(struct nv50_disp_chan *chan)
  60{
  61        struct nvkm_subdev *subdev = &chan->disp->base.engine.subdev;
  62        struct nvkm_device *device = subdev->device;
  63        int ctrl = chan->chid.ctrl;
  64        int user = chan->chid.user;
  65
  66        /* initialise channel for dma command submission */
  67        nvkm_wr32(device, 0x610494 + (ctrl * 0x0010), chan->push);
  68        nvkm_wr32(device, 0x610498 + (ctrl * 0x0010), 0x00010000);
  69        nvkm_wr32(device, 0x61049c + (ctrl * 0x0010), 0x00000001);
  70        nvkm_mask(device, 0x610490 + (ctrl * 0x0010), 0x00000010, 0x00000010);
  71        nvkm_wr32(device, 0x640000 + (ctrl * 0x1000), 0x00000000);
  72        nvkm_wr32(device, 0x610490 + (ctrl * 0x0010), 0x00000013);
  73
  74        /* wait for it to go inactive */
  75        if (nvkm_msec(device, 2000,
  76                if (!(nvkm_rd32(device, 0x610490 + (ctrl * 0x10)) & 0x80000000))
  77                        break;
  78        ) < 0) {
  79                nvkm_error(subdev, "ch %d init: %08x\n", user,
  80                           nvkm_rd32(device, 0x610490 + (ctrl * 0x10)));
  81                return -EBUSY;
  82        }
  83
  84        return 0;
  85}
  86
  87const struct nv50_disp_chan_func
  88gf119_disp_dmac_func = {
  89        .init = gf119_disp_dmac_init,
  90        .fini = gf119_disp_dmac_fini,
  91        .intr = gf119_disp_chan_intr,
  92        .user = nv50_disp_chan_user,
  93        .bind = gf119_disp_dmac_bind,
  94};
  95