release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/gpu/drm/radeon/radeon_cursor.c

   1 /*
   2  * Copyright 2007-8 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors: Dave Airlie
  24  *          Alex Deucher
  25  */
  26 #include "drmP.h"
  27 #include "radeon_drm.h"
  28 #include "radeon.h"
  29
  30 #define CURSOR_WIDTH 64
  31 #define CURSOR_HEIGHT 64
  32
  33 static void radeon_lock_cursor(struct drm_crtc *crtc, bool lock)
  34 {
  35         struct radeon_device *rdev = crtc->dev->dev_private;
  36         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  37         uint32_t cur_lock;
  38
  39         if (ASIC_IS_DCE4(rdev)) {
  40                 cur_lock = RREG32(EVERGREEN_CUR_UPDATE + radeon_crtc->crtc_offset);
  41                 if (lock)
  42                         cur_lock |= EVERGREEN_CURSOR_UPDATE_LOCK;
  43                 else
  44                         cur_lock &= ~EVERGREEN_CURSOR_UPDATE_LOCK;
  45                 WREG32(EVERGREEN_CUR_UPDATE + radeon_crtc->crtc_offset, cur_lock);
  46         } else if (ASIC_IS_AVIVO(rdev)) {
  47                 cur_lock = RREG32(AVIVO_D1CUR_UPDATE + radeon_crtc->crtc_offset);
  48                 if (lock)
  49                         cur_lock |= AVIVO_D1CURSOR_UPDATE_LOCK;
  50                 else
  51                         cur_lock &= ~AVIVO_D1CURSOR_UPDATE_LOCK;
  52                 WREG32(AVIVO_D1CUR_UPDATE + radeon_crtc->crtc_offset, cur_lock);
  53         } else {
  54                 cur_lock = RREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset);
  55                 if (lock)
  56                         cur_lock |= RADEON_CUR_LOCK;
  57                 else
  58                         cur_lock &= ~RADEON_CUR_LOCK;
  59                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, cur_lock);
  60         }
  61 }
  62
  63 static void radeon_hide_cursor(struct drm_crtc *crtc)
  64 {
  65         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  66         struct radeon_device *rdev = crtc->dev->dev_private;
  67
  68         if (ASIC_IS_DCE4(rdev)) {
  69                 WREG32(RADEON_MM_INDEX, EVERGREEN_CUR_CONTROL + radeon_crtc->crtc_offset);
  70                 WREG32(RADEON_MM_DATA, EVERGREEN_CURSOR_MODE(EVERGREEN_CURSOR_24_8_PRE_MULT));
  71         } else if (ASIC_IS_AVIVO(rdev)) {
  72                 WREG32(RADEON_MM_INDEX, AVIVO_D1CUR_CONTROL + radeon_crtc->crtc_offset);
  73                 WREG32(RADEON_MM_DATA, (AVIVO_D1CURSOR_MODE_24BPP << AVIVO_D1CURSOR_MODE_SHIFT));
  74         } else {
  75                 switch (radeon_crtc->crtc_id) {
  76                 case 0:
  77                         WREG32(RADEON_MM_INDEX, RADEON_CRTC_GEN_CNTL);
  78                         break;
  79                 case 1:
  80                         WREG32(RADEON_MM_INDEX, RADEON_CRTC2_GEN_CNTL);
  81                         break;
  82                 default:
  83                         return;
  84                 }
  85                 WREG32_P(RADEON_MM_DATA, 0, ~RADEON_CRTC_CUR_EN);
  86         }
  87 }
  88
  89 static void radeon_show_cursor(struct drm_crtc *crtc)
  90 {
  91         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  92         struct radeon_device *rdev = crtc->dev->dev_private;
  93
  94         if (ASIC_IS_DCE4(rdev)) {
  95                 WREG32(RADEON_MM_INDEX, EVERGREEN_CUR_CONTROL + radeon_crtc->crtc_offset);
  96                 WREG32(RADEON_MM_DATA, EVERGREEN_CURSOR_EN |
  97                        EVERGREEN_CURSOR_MODE(EVERGREEN_CURSOR_24_8_PRE_MULT));
  98         } else if (ASIC_IS_AVIVO(rdev)) {
  99                 WREG32(RADEON_MM_INDEX, AVIVO_D1CUR_CONTROL + radeon_crtc->crtc_offset);
 100                 WREG32(RADEON_MM_DATA, AVIVO_D1CURSOR_EN |
 101                        (AVIVO_D1CURSOR_MODE_24BPP << AVIVO_D1CURSOR_MODE_SHIFT));
 102         } else {
 103                 switch (radeon_crtc->crtc_id) {
 104                 case 0:
 105                         WREG32(RADEON_MM_INDEX, RADEON_CRTC_GEN_CNTL);
 106                         break;
 107                 case 1:
 108                         WREG32(RADEON_MM_INDEX, RADEON_CRTC2_GEN_CNTL);
 109                         break;
 110                 default:
 111                         return;
 112                 }
 113
 114                 WREG32_P(RADEON_MM_DATA, (RADEON_CRTC_CUR_EN |
 115                                           (RADEON_CRTC_CUR_MODE_24BPP << RADEON_CRTC_CUR_MODE_SHIFT)),
 116                          ~(RADEON_CRTC_CUR_EN | RADEON_CRTC_CUR_MODE_MASK));
 117         }
 118 }
 119
 120 static void radeon_set_cursor(struct drm_crtc *crtc, struct drm_gem_object *obj,
 121                               uint32_t gpu_addr)
 122 {
 123         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 124         struct radeon_device *rdev = crtc->dev->dev_private;
 125
 126         if (ASIC_IS_DCE4(rdev)) {
 127                 WREG32(EVERGREEN_CUR_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset, 0);
 128                 WREG32(EVERGREEN_CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset, gpu_addr);
 129         } else if (ASIC_IS_AVIVO(rdev)) {
 130                 if (rdev->family >= CHIP_RV770) {
 131                         if (radeon_crtc->crtc_id)
 132                                 WREG32(R700_D2CUR_SURFACE_ADDRESS_HIGH, 0);
 133                         else
 134                                 WREG32(R700_D1CUR_SURFACE_ADDRESS_HIGH, 0);
 135                 }
 136                 WREG32(AVIVO_D1CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset, gpu_addr);
 137         } else {
 138                 radeon_crtc->legacy_cursor_offset = gpu_addr - radeon_crtc->legacy_display_base_addr;
 139                 /* offset is from DISP(2)_BASE_ADDRESS */
 140                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, radeon_crtc->legacy_cursor_offset);
 141         }
 142 }
 143
 144 int radeon_crtc_cursor_set(struct drm_crtc *crtc,
 145                            struct drm_file *file_priv,
 146                            uint32_t handle,
 147                            uint32_t width,
 148                            uint32_t height)
 149 {
 150         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 151         struct drm_gem_object *obj;
 152         uint64_t gpu_addr;
 153         int ret;
 154
 155         if (!handle) {
 156                 /* turn off cursor */
 157                 radeon_hide_cursor(crtc);
 158                 obj = NULL;
 159                 goto unpin;
 160         }
 161
 162         if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {
 163                 DRM_ERROR("bad cursor width or height %d x %d\n", width, height);
 164                 return -EINVAL;
 165         }
 166
 167         radeon_crtc->cursor_width = width;
 168         radeon_crtc->cursor_height = height;
 169
 170         obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 171         if (!obj) {
 172                 DRM_ERROR("Cannot find cursor object %x for crtc %d\n", handle, radeon_crtc->crtc_id);
 173                 return -ENOENT;
 174         }
 175
 176         ret = radeon_gem_object_pin(obj, RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
 177         if (ret)
 178                 goto fail;
 179
 180         radeon_lock_cursor(crtc, true);
 181         radeon_set_cursor(crtc, obj, gpu_addr);
 182         radeon_show_cursor(crtc);
 183         radeon_lock_cursor(crtc, false);
 184
 185 unpin:
 186         if (radeon_crtc->cursor_bo) {
 187                 radeon_gem_object_unpin(radeon_crtc->cursor_bo);
 188                 drm_gem_object_unreference_unlocked(radeon_crtc->cursor_bo);
 189         }
 190
 191         radeon_crtc->cursor_bo = obj;
 192         return 0;
 193 fail:
 194         drm_gem_object_unreference_unlocked(obj);
 195
 196         return ret;
 197 }
 198
 199 int radeon_crtc_cursor_move(struct drm_crtc *crtc,
 200                             int x, int y)
 201 {
 202         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 203         struct radeon_device *rdev = crtc->dev->dev_private;
 204         int xorigin = 0, yorigin = 0;
 205         int w = radeon_crtc->cursor_width;
 206
 207         if (x < 0)
 208                 xorigin = -x + 1;
 209         if (y < 0)
 210                 yorigin = -y + 1;
 211         if (xorigin >= CURSOR_WIDTH)
 212                 xorigin = CURSOR_WIDTH - 1;
 213         if (yorigin >= CURSOR_HEIGHT)
 214                 yorigin = CURSOR_HEIGHT - 1;
 215
 216         if (ASIC_IS_AVIVO(rdev)) {
 217                 int i = 0;
 218                 struct drm_crtc *crtc_p;
 219
 220                 /* avivo cursor are offset into the total surface */
 221                 x += crtc->x;
 222                 y += crtc->y;
 223                 DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
 224
 225                 /* avivo cursor image can't end on 128 pixel boundry or
 226                  * go past the end of the frame if both crtcs are enabled
 227                  */
 228                 list_for_each_entry(crtc_p, &crtc->dev->mode_config.crtc_list, head) {
 229                         if (crtc_p->enabled)
 230                                 i++;
 231                 }
 232                 if (i > 1) {
 233                         int cursor_end, frame_end;
 234
 235                         cursor_end = x - xorigin + w;
 236                         frame_end = crtc->x + crtc->mode.crtc_hdisplay;
 237                         if (cursor_end >= frame_end) {
 238                                 w = w - (cursor_end - frame_end);
 239                                 if (!(frame_end & 0x7f))
 240                                         w--;
 241                         } else {
 242                                 if (!(cursor_end & 0x7f))
 243                                         w--;
 244                         }
 245                         if (w <= 0)
 246                                 w = 1;
 247                 }
 248         }
 249
 250         radeon_lock_cursor(crtc, true);
 251         if (ASIC_IS_DCE4(rdev)) {
 252                 WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset,
 253                        ((xorigin ? 0 : x) << 16) |
 254                        (yorigin ? 0 : y));
 255                 WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 256                 WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset,
 257                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 258         } else if (ASIC_IS_AVIVO(rdev)) {
 259                 WREG32(AVIVO_D1CUR_POSITION + radeon_crtc->crtc_offset,
 260                              ((xorigin ? 0 : x) << 16) |
 261                              (yorigin ? 0 : y));
 262                 WREG32(AVIVO_D1CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 263                 WREG32(AVIVO_D1CUR_SIZE + radeon_crtc->crtc_offset,
 264                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 265         } else {
 266                 if (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)
 267                         y *= 2;
 268
 269                 WREG32(RADEON_CUR_HORZ_VERT_OFF + radeon_crtc->crtc_offset,
 270                        (RADEON_CUR_LOCK
 271                         | (xorigin << 16)
 272                         | yorigin));
 273                 WREG32(RADEON_CUR_HORZ_VERT_POSN + radeon_crtc->crtc_offset,
 274                        (RADEON_CUR_LOCK
 275                         | ((xorigin ? 0 : x) << 16)
 276                         | (yorigin ? 0 : y)));
 277                 /* offset is from DISP(2)_BASE_ADDRESS */
 278                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, (radeon_crtc->legacy_cursor_offset +
 279                                                                       (yorigin * 256)));
 280         }
 281         radeon_lock_cursor(crtc, false);
 282
 283         return 0;
 284 }