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                               uint64_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,
 128                        upper_32_bits(gpu_addr));
 129                 WREG32(EVERGREEN_CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
 130                        gpu_addr & 0xffffffff);
 131         } else if (ASIC_IS_AVIVO(rdev)) {
 132                 if (rdev->family >= CHIP_RV770) {
 133                         if (radeon_crtc->crtc_id)
 134                                 WREG32(R700_D2CUR_SURFACE_ADDRESS_HIGH, upper_32_bits(gpu_addr));
 135                         else
 136                                 WREG32(R700_D1CUR_SURFACE_ADDRESS_HIGH, upper_32_bits(gpu_addr));
 137                 }
 138                 WREG32(AVIVO_D1CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
 139                        gpu_addr & 0xffffffff);
 140         } else {
 141                 radeon_crtc->legacy_cursor_offset = gpu_addr - radeon_crtc->legacy_display_base_addr;
 142                 /* offset is from DISP(2)_BASE_ADDRESS */
 143                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, radeon_crtc->legacy_cursor_offset);
 144         }
 145 }
 146
 147 int radeon_crtc_cursor_set(struct drm_crtc *crtc,
 148                            struct drm_file *file_priv,
 149                            uint32_t handle,
 150                            uint32_t width,
 151                            uint32_t height)
 152 {
 153         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 154         struct radeon_device *rdev = crtc->dev->dev_private;
 155         struct drm_gem_object *obj;
 156         struct radeon_bo *robj;
 157         uint64_t gpu_addr;
 158         int ret;
 159
 160         if (!handle) {
 161                 /* turn off cursor */
 162                 radeon_hide_cursor(crtc);
 163                 obj = NULL;
 164                 goto unpin;
 165         }
 166
 167         if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {
 168                 DRM_ERROR("bad cursor width or height %d x %d\n", width, height);
 169                 return -EINVAL;
 170         }
 171
 172         obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 173         if (!obj) {
 174                 DRM_ERROR("Cannot find cursor object %x for crtc %d\n", handle, radeon_crtc->crtc_id);
 175                 return -ENOENT;
 176         }
 177
 178         robj = gem_to_radeon_bo(obj);
 179         ret = radeon_bo_reserve(robj, false);
 180         if (unlikely(ret != 0))
 181                 goto fail;
 182         /* Only 27 bit offset for legacy cursor */
 183         ret = radeon_bo_pin_restricted(robj, RADEON_GEM_DOMAIN_VRAM,
 184                                        ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
 185                                        &gpu_addr);
 186         radeon_bo_unreserve(robj);
 187         if (ret)
 188                 goto fail;
 189
 190         radeon_crtc->cursor_width = width;
 191         radeon_crtc->cursor_height = height;
 192
 193         radeon_lock_cursor(crtc, true);
 194         radeon_set_cursor(crtc, obj, gpu_addr);
 195         radeon_show_cursor(crtc);
 196         radeon_lock_cursor(crtc, false);
 197
 198 unpin:
 199         if (radeon_crtc->cursor_bo) {
 200                 radeon_gem_object_unpin(radeon_crtc->cursor_bo);
 201                 drm_gem_object_unreference_unlocked(radeon_crtc->cursor_bo);
 202         }
 203
 204         radeon_crtc->cursor_bo = obj;
 205         return 0;
 206 fail:
 207         drm_gem_object_unreference_unlocked(obj);
 208
 209         return ret;
 210 }
 211
 212 int radeon_crtc_cursor_move(struct drm_crtc *crtc,
 213                             int x, int y)
 214 {
 215         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 216         struct radeon_device *rdev = crtc->dev->dev_private;
 217         int xorigin = 0, yorigin = 0;
 218         int w = radeon_crtc->cursor_width;
 219
 220         if (ASIC_IS_AVIVO(rdev)) {
 221                 /* avivo cursor are offset into the total surface */
 222                 x += crtc->x;
 223                 y += crtc->y;
 224         }
 225         DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
 226
 227         if (x < 0) {
 228                 xorigin = min(-x, CURSOR_WIDTH - 1);
 229                 x = 0;
 230         }
 231         if (y < 0) {
 232                 yorigin = min(-y, CURSOR_HEIGHT - 1);
 233                 y = 0;
 234         }
 235
 236         if (ASIC_IS_AVIVO(rdev)) {
 237                 int i = 0;
 238                 struct drm_crtc *crtc_p;
 239
 240                 /* avivo cursor image can't end on 128 pixel boundary or
 241                  * go past the end of the frame if both crtcs are enabled
 242                  */
 243                 list_for_each_entry(crtc_p, &crtc->dev->mode_config.crtc_list, head) {
 244                         if (crtc_p->enabled)
 245                                 i++;
 246                 }
 247                 if (i > 1) {
 248                         int cursor_end, frame_end;
 249
 250                         cursor_end = x - xorigin + w;
 251                         frame_end = crtc->x + crtc->mode.crtc_hdisplay;
 252                         if (cursor_end >= frame_end) {
 253                                 w = w - (cursor_end - frame_end);
 254                                 if (!(frame_end & 0x7f))
 255                                         w--;
 256                         } else {
 257                                 if (!(cursor_end & 0x7f))
 258                                         w--;
 259                         }
 260                         if (w <= 0) {
 261                                 w = 1;
 262                                 cursor_end = x - xorigin + w;
 263                                 if (!(cursor_end & 0x7f)) {
 264                                         x--;
 265                                         WARN_ON_ONCE(x < 0);
 266                                 }
 267                         }
 268                 }
 269         }
 270
 271         radeon_lock_cursor(crtc, true);
 272         if (ASIC_IS_DCE4(rdev)) {
 273                 WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y);
 274                 WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 275                 WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset,
 276                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 277         } else if (ASIC_IS_AVIVO(rdev)) {
 278                 WREG32(AVIVO_D1CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y);
 279                 WREG32(AVIVO_D1CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 280                 WREG32(AVIVO_D1CUR_SIZE + radeon_crtc->crtc_offset,
 281                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 282         } else {
 283                 if (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)
 284                         y *= 2;
 285
 286                 WREG32(RADEON_CUR_HORZ_VERT_OFF + radeon_crtc->crtc_offset,
 287                        (RADEON_CUR_LOCK
 288                         | (xorigin << 16)
 289                         | yorigin));
 290                 WREG32(RADEON_CUR_HORZ_VERT_POSN + radeon_crtc->crtc_offset,
 291                        (RADEON_CUR_LOCK
 292                         | (x << 16)
 293                         | y));
 294                 /* offset is from DISP(2)_BASE_ADDRESS */
 295                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, (radeon_crtc->legacy_cursor_offset +
 296                                                                       (yorigin * 256)));
 297         }
 298         radeon_lock_cursor(crtc, false);
 299
 300         return 0;
 301 }