release/src-rt-6.x.4708/linux/linux-2.6.36/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 "drmP.h"
  28 #include "drm_mode.h"
  29
  30 #define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
  31 #include "nouveau_reg.h"
  32 #include "nouveau_drv.h"
  33 #include "nouveau_crtc.h"
  34 #include "nv50_display.h"
  35
  36 static void
  37 nv50_cursor_show(struct nouveau_crtc *nv_crtc, bool update)
  38 {
  39         struct drm_nouveau_private *dev_priv = nv_crtc->base.dev->dev_private;
  40         struct nouveau_channel *evo = dev_priv->evo;
  41         struct drm_device *dev = nv_crtc->base.dev;
  42         int ret;
  43
  44         NV_DEBUG_KMS(dev, "\n");
  45
  46         if (update && nv_crtc->cursor.visible)
  47                 return;
  48
  49         ret = RING_SPACE(evo, (dev_priv->chipset != 0x50 ? 5 : 3) + update * 2);
  50         if (ret) {
  51                 NV_ERROR(dev, "no space while unhiding cursor\n");
  52                 return;
  53         }
  54
  55         if (dev_priv->chipset != 0x50) {
  56                 BEGIN_RING(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
  57                 OUT_RING(evo, NvEvoVRAM);
  58         }
  59         BEGIN_RING(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
  60         OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_SHOW);
  61         OUT_RING(evo, nv_crtc->cursor.offset >> 8);
  62
  63         if (update) {
  64                 BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1);
  65                 OUT_RING(evo, 0);
  66                 FIRE_RING(evo);
  67                 nv_crtc->cursor.visible = true;
  68         }
  69 }
  70
  71 static void
  72 nv50_cursor_hide(struct nouveau_crtc *nv_crtc, bool update)
  73 {
  74         struct drm_nouveau_private *dev_priv = nv_crtc->base.dev->dev_private;
  75         struct nouveau_channel *evo = dev_priv->evo;
  76         struct drm_device *dev = nv_crtc->base.dev;
  77         int ret;
  78
  79         NV_DEBUG_KMS(dev, "\n");
  80
  81         if (update && !nv_crtc->cursor.visible)
  82                 return;
  83
  84         ret = RING_SPACE(evo, (dev_priv->chipset != 0x50 ? 5 : 3) + update * 2);
  85         if (ret) {
  86                 NV_ERROR(dev, "no space while hiding cursor\n");
  87                 return;
  88         }
  89         BEGIN_RING(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
  90         OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_HIDE);
  91         OUT_RING(evo, 0);
  92         if (dev_priv->chipset != 0x50) {
  93                 BEGIN_RING(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
  94                 OUT_RING(evo, NV84_EVO_CRTC_CURSOR_DMA_HANDLE_NONE);
  95         }
  96
  97         if (update) {
  98                 BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1);
  99                 OUT_RING(evo, 0);
 100                 FIRE_RING(evo);
 101                 nv_crtc->cursor.visible = false;
 102         }
 103 }
 104
 105 static void
 106 nv50_cursor_set_pos(struct nouveau_crtc *nv_crtc, int x, int y)
 107 {
 108         struct drm_device *dev = nv_crtc->base.dev;
 109
 110         nv_crtc->cursor_saved_x = x; nv_crtc->cursor_saved_y = y;
 111         nv_wr32(dev, NV50_PDISPLAY_CURSOR_USER_POS(nv_crtc->index),
 112                 ((y & 0xFFFF) << 16) | (x & 0xFFFF));
 113         /* Needed to make the cursor move. */
 114         nv_wr32(dev, NV50_PDISPLAY_CURSOR_USER_POS_CTRL(nv_crtc->index), 0);
 115 }
 116
 117 static void
 118 nv50_cursor_set_offset(struct nouveau_crtc *nv_crtc, uint32_t offset)
 119 {
 120         NV_DEBUG_KMS(nv_crtc->base.dev, "\n");
 121         if (offset == nv_crtc->cursor.offset)
 122                 return;
 123
 124         nv_crtc->cursor.offset = offset;
 125         if (nv_crtc->cursor.visible) {
 126                 nv_crtc->cursor.visible = false;
 127                 nv_crtc->cursor.show(nv_crtc, true);
 128         }
 129 }
 130
 131 int
 132 nv50_cursor_init(struct nouveau_crtc *nv_crtc)
 133 {
 134         nv_crtc->cursor.set_offset = nv50_cursor_set_offset;
 135         nv_crtc->cursor.set_pos = nv50_cursor_set_pos;
 136         nv_crtc->cursor.hide = nv50_cursor_hide;
 137         nv_crtc->cursor.show = nv50_cursor_show;
 138         return 0;
 139 }
 140
 141 void
 142 nv50_cursor_fini(struct nouveau_crtc *nv_crtc)
 143 {
 144         struct drm_device *dev = nv_crtc->base.dev;
 145         int idx = nv_crtc->index;
 146
 147         NV_DEBUG_KMS(dev, "\n");
 148
 149         nv_wr32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(idx), 0);
 150         if (!nv_wait(NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(idx),
 151                      NV50_PDISPLAY_CURSOR_CURSOR_CTRL2_STATUS, 0)) {
 152                 NV_ERROR(dev, "timeout: CURSOR_CTRL2_STATUS == 0\n");
 153                 NV_ERROR(dev, "CURSOR_CTRL2 = 0x%08x\n",
 154                          nv_rd32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(idx)));
 155         }
 156 }