drivers/gpu/drm/nouveau/nv50_cursor.c

   1 /*
   2  * Copyright (C) 2008 Maarten Maathuis.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include <drm/drmP.h>
  28
  29 #define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
  30 #include "nouveau_reg.h"
  31 #include "nouveau_drv.h"
  32 #include "nouveau_crtc.h"
  33 #include "nv50_display.h"
  34
  35 static void
  36 nv50_cursor_show(struct nouveau_crtc *nv_crtc, bool update)
  37 {
  38         struct drm_device *dev = nv_crtc->base.dev;
  39         struct drm_nouveau_private *dev_priv = dev->dev_private;
  40         struct nouveau_channel *evo = nv50_display(dev)->master;
  41         int ret;
  42
  43         NV_DEBUG_KMS(dev, "\n");
  44
  45         if (update && nv_crtc->cursor.visible)
  46                 return;
  47
  48         ret = RING_SPACE(evo, (dev_priv->chipset != 0x50 ? 5 : 3) + update * 2);
  49         if (ret) {
  50                 NV_ERROR(dev, "no space while unhiding cursor\n");
  51                 return;
  52         }
  53
  54         if (dev_priv->chipset != 0x50) {
  55                 BEGIN_NV04(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
  56                 OUT_RING(evo, NvEvoVRAM);
  57         }
  58         BEGIN_NV04(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
  59         OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_SHOW);
  60         OUT_RING(evo, nv_crtc->cursor.offset >> 8);
  61
  62         if (update) {
  63                 BEGIN_NV04(evo, 0, NV50_EVO_UPDATE, 1);
  64                 OUT_RING(evo, 0);
  65                 FIRE_RING(evo);
  66                 nv_crtc->cursor.visible = true;
  67         }
  68 }
  69
  70 static void
  71 nv50_cursor_hide(struct nouveau_crtc *nv_crtc, bool update)
  72 {
  73         struct drm_device *dev = nv_crtc->base.dev;
  74         struct drm_nouveau_private *dev_priv = dev->dev_private;
  75         struct nouveau_channel *evo = nv50_display(dev)->master;
  76         int ret;
  77
  78         NV_DEBUG_KMS(dev, "\n");
  79
  80         if (update && !nv_crtc->cursor.visible)
  81                 return;
  82
  83         ret = RING_SPACE(evo, (dev_priv->chipset != 0x50 ? 5 : 3) + update * 2);
  84         if (ret) {
  85                 NV_ERROR(dev, "no space while hiding cursor\n");
  86                 return;
  87         }
  88         BEGIN_NV04(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
  89         OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_HIDE);
  90         OUT_RING(evo, 0);
  91         if (dev_priv->chipset != 0x50) {
  92                 BEGIN_NV04(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
  93                 OUT_RING(evo, NV84_EVO_CRTC_CURSOR_DMA_HANDLE_NONE);
  94         }
  95
  96         if (update) {
  97                 BEGIN_NV04(evo, 0, NV50_EVO_UPDATE, 1);
  98                 OUT_RING(evo, 0);
  99                 FIRE_RING(evo);
 100                 nv_crtc->cursor.visible = false;
 101         }
 102 }
 103
 104 static void
 105 nv50_cursor_set_pos(struct nouveau_crtc *nv_crtc, int x, int y)
 106 {
 107         struct drm_device *dev = nv_crtc->base.dev;
 108
 109         nv_crtc->cursor_saved_x = x; nv_crtc->cursor_saved_y = y;
 110         nv_wr32(dev, NV50_PDISPLAY_CURSOR_USER_POS(nv_crtc->index),
 111                 ((y & 0xFFFF) << 16) | (x & 0xFFFF));
 112         /* Needed to make the cursor move. */
 113         nv_wr32(dev, NV50_PDISPLAY_CURSOR_USER_POS_CTRL(nv_crtc->index), 0);
 114 }
 115
 116 static void
 117 nv50_cursor_set_offset(struct nouveau_crtc *nv_crtc, uint32_t offset)
 118 {
 119         NV_DEBUG_KMS(nv_crtc->base.dev, "\n");
 120         if (offset == nv_crtc->cursor.offset)
 121                 return;
 122
 123         nv_crtc->cursor.offset = offset;
 124         if (nv_crtc->cursor.visible) {
 125                 nv_crtc->cursor.visible = false;
 126                 nv_crtc->cursor.show(nv_crtc, true);
 127         }
 128 }
 129
 130 int
 131 nv50_cursor_init(struct nouveau_crtc *nv_crtc)
 132 {
 133         nv_crtc->cursor.set_offset = nv50_cursor_set_offset;
 134         nv_crtc->cursor.set_pos = nv50_cursor_set_pos;
 135         nv_crtc->cursor.hide = nv50_cursor_hide;
 136         nv_crtc->cursor.show = nv50_cursor_show;
 137         return 0;
 138 }