LXR linux/drivers/gpu/drm/nouveau/dispnv50/wimmc37b.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 "wimm.h"
  23#include "atom.h"
  24#include "wndw.h"
  25
  26#include <nvif/clc37b.h>
  27
  28static void
  29wimmc37b_update(struct nv50_wndw *wndw, u32 *interlock)
  30{
  31        u32 *push;
  32        if ((push = evo_wait(&wndw->wimm, 2))) {
  33                evo_mthd(push, 0x0200, 1);
  34                if (interlock[NV50_DISP_INTERLOCK_WNDW] & wndw->interlock.data)
  35                        evo_data(push, 0x00000003);
  36                else
  37                        evo_data(push, 0x00000001);
  38                evo_kick(push, &wndw->wimm);
  39        }
  40}
  41
  42static void
  43wimmc37b_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
  44{
  45        u32 *push;
  46        if ((push = evo_wait(&wndw->wimm, 2))) {
  47                evo_mthd(push, 0x0208, 1);
  48                evo_data(push, asyw->point.y << 16 | asyw->point.x);
  49                evo_kick(push, &wndw->wimm);
  50        }
  51}
  52
  53static const struct nv50_wimm_func
  54wimmc37b = {
  55        .point = wimmc37b_point,
  56        .update = wimmc37b_update,
  57};
  58
  59static int
  60wimmc37b_init_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
  61               s32 oclass, struct nv50_wndw *wndw)
  62{
  63        struct nvc37b_window_imm_channel_dma_v0 args = {
  64                .pushbuf = 0xb0007b00 | wndw->id,
  65                .index = wndw->id,
  66        };
  67        struct nv50_disp *disp = nv50_disp(drm->dev);
  68        int ret;
  69
  70        ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
  71                               &oclass, 0, &args, sizeof(args), 0,
  72                               &wndw->wimm);
  73        if (ret) {
  74                NV_ERROR(drm, "wimm%04x allocation failed: %d\n", oclass, ret);
  75                return ret;
  76        }
  77
  78        wndw->interlock.wimm = wndw->interlock.data;
  79        wndw->immd = func;
  80        return 0;
  81}
  82
  83int
  84wimmc37b_init(struct nouveau_drm *drm, s32 oclass, struct nv50_wndw *wndw)
  85{
  86        return wimmc37b_init_(&wimmc37b, drm, oclass, wndw);
  87}
  88