kernel/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 <drm/drmP.h>
  27 #include <drm/radeon_drm.h>
  28 #include "radeon.h"
  29
  30 static void radeon_lock_cursor(struct drm_crtc *crtc, bool lock)
  31 {
  32         struct radeon_device *rdev = crtc->dev->dev_private;
  33         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  34         uint32_t cur_lock;
  35
  36         if (ASIC_IS_DCE4(rdev)) {
  37                 cur_lock = RREG32(EVERGREEN_CUR_UPDATE + radeon_crtc->crtc_offset);
  38                 if (lock)
  39                         cur_lock |= EVERGREEN_CURSOR_UPDATE_LOCK;
  40                 else
  41                         cur_lock &= ~EVERGREEN_CURSOR_UPDATE_LOCK;
  42                 WREG32(EVERGREEN_CUR_UPDATE + radeon_crtc->crtc_offset, cur_lock);
  43         } else if (ASIC_IS_AVIVO(rdev)) {
  44                 cur_lock = RREG32(AVIVO_D1CUR_UPDATE + radeon_crtc->crtc_offset);
  45                 if (lock)
  46                         cur_lock |= AVIVO_D1CURSOR_UPDATE_LOCK;
  47                 else
  48                         cur_lock &= ~AVIVO_D1CURSOR_UPDATE_LOCK;
  49                 WREG32(AVIVO_D1CUR_UPDATE + radeon_crtc->crtc_offset, cur_lock);
  50         } else {
  51                 cur_lock = RREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset);
  52                 if (lock)
  53                         cur_lock |= RADEON_CUR_LOCK;
  54                 else
  55                         cur_lock &= ~RADEON_CUR_LOCK;
  56                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, cur_lock);
  57         }
  58 }
  59
  60 static void radeon_hide_cursor(struct drm_crtc *crtc)
  61 {
  62         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  63         struct radeon_device *rdev = crtc->dev->dev_private;
  64
  65         if (ASIC_IS_DCE4(rdev)) {
  66                 WREG32_IDX(EVERGREEN_CUR_CONTROL + radeon_crtc->crtc_offset,
  67                            EVERGREEN_CURSOR_MODE(EVERGREEN_CURSOR_24_8_PRE_MULT) |
  68                            EVERGREEN_CURSOR_URGENT_CONTROL(EVERGREEN_CURSOR_URGENT_1_2));
  69         } else if (ASIC_IS_AVIVO(rdev)) {
  70                 WREG32_IDX(AVIVO_D1CUR_CONTROL + radeon_crtc->crtc_offset,
  71                            (AVIVO_D1CURSOR_MODE_24BPP << AVIVO_D1CURSOR_MODE_SHIFT));
  72         } else {
  73                 u32 reg;
  74                 switch (radeon_crtc->crtc_id) {
  75                 case 0:
  76                         reg = RADEON_CRTC_GEN_CNTL;
  77                         break;
  78                 case 1:
  79                         reg = RADEON_CRTC2_GEN_CNTL;
  80                         break;
  81                 default:
  82                         return;
  83                 }
  84                 WREG32_IDX(reg, RREG32_IDX(reg) & ~RADEON_CRTC_CUR_EN);
  85         }
  86 }
  87
  88 static void radeon_show_cursor(struct drm_crtc *crtc)
  89 {
  90         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  91         struct radeon_device *rdev = crtc->dev->dev_private;
  92
  93         if (radeon_crtc->cursor_out_of_bounds)
  94                 return;
  95
  96         if (ASIC_IS_DCE4(rdev)) {
  97                 WREG32(EVERGREEN_CUR_SURFACE_ADDRESS_HIGH + radeon_crtc->crtc_offset,
  98                        upper_32_bits(radeon_crtc->cursor_addr));
  99                 WREG32(EVERGREEN_CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
 100                        lower_32_bits(radeon_crtc->cursor_addr));
 101                 WREG32(RADEON_MM_INDEX, EVERGREEN_CUR_CONTROL + radeon_crtc->crtc_offset);
 102                 WREG32(RADEON_MM_DATA, EVERGREEN_CURSOR_EN |
 103                        EVERGREEN_CURSOR_MODE(EVERGREEN_CURSOR_24_8_PRE_MULT) |
 104                        EVERGREEN_CURSOR_URGENT_CONTROL(EVERGREEN_CURSOR_URGENT_1_2));
 105         } else if (ASIC_IS_AVIVO(rdev)) {
 106                 if (rdev->family >= CHIP_RV770) {
 107                         if (radeon_crtc->crtc_id)
 108                                 WREG32(R700_D2CUR_SURFACE_ADDRESS_HIGH,
 109                                        upper_32_bits(radeon_crtc->cursor_addr));
 110                         else
 111                                 WREG32(R700_D1CUR_SURFACE_ADDRESS_HIGH,
 112                                        upper_32_bits(radeon_crtc->cursor_addr));
 113                 }
 114
 115                 WREG32(AVIVO_D1CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset,
 116                        lower_32_bits(radeon_crtc->cursor_addr));
 117                 WREG32(RADEON_MM_INDEX, AVIVO_D1CUR_CONTROL + radeon_crtc->crtc_offset);
 118                 WREG32(RADEON_MM_DATA, AVIVO_D1CURSOR_EN |
 119                        (AVIVO_D1CURSOR_MODE_24BPP << AVIVO_D1CURSOR_MODE_SHIFT));
 120         } else {
 121                 /* offset is from DISP(2)_BASE_ADDRESS */
 122                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset,
 123                        radeon_crtc->cursor_addr - radeon_crtc->legacy_display_base_addr);
 124
 125                 switch (radeon_crtc->crtc_id) {
 126                 case 0:
 127                         WREG32(RADEON_MM_INDEX, RADEON_CRTC_GEN_CNTL);
 128                         break;
 129                 case 1:
 130                         WREG32(RADEON_MM_INDEX, RADEON_CRTC2_GEN_CNTL);
 131                         break;
 132                 default:
 133                         return;
 134                 }
 135
 136                 WREG32_P(RADEON_MM_DATA, (RADEON_CRTC_CUR_EN |
 137                                           (RADEON_CRTC_CUR_MODE_24BPP << RADEON_CRTC_CUR_MODE_SHIFT)),
 138                          ~(RADEON_CRTC_CUR_EN | RADEON_CRTC_CUR_MODE_MASK));
 139         }
 140 }
 141
 142 static int radeon_cursor_move_locked(struct drm_crtc *crtc, int x, int y)
 143 {
 144         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 145         struct radeon_device *rdev = crtc->dev->dev_private;
 146         int xorigin = 0, yorigin = 0;
 147         int w = radeon_crtc->cursor_width;
 148
 149         radeon_crtc->cursor_x = x;
 150         radeon_crtc->cursor_y = y;
 151
 152         if (ASIC_IS_AVIVO(rdev)) {
 153                 /* avivo cursor are offset into the total surface */
 154                 x += crtc->x;
 155                 y += crtc->y;
 156         }
 157
 158         if (x < 0)
 159                 xorigin = min(-x, radeon_crtc->max_cursor_width - 1);
 160         if (y < 0)
 161                 yorigin = min(-y, radeon_crtc->max_cursor_height - 1);
 162
 163         if (!ASIC_IS_AVIVO(rdev)) {
 164                 x += crtc->x;
 165                 y += crtc->y;
 166         }
 167         DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
 168
 169         /* fixed on DCE6 and newer */
 170         if (ASIC_IS_AVIVO(rdev) && !ASIC_IS_DCE6(rdev)) {
 171                 int i = 0;
 172                 struct drm_crtc *crtc_p;
 173
 174                 /*
 175                  * avivo cursor image can't end on 128 pixel boundary or
 176                  * go past the end of the frame if both crtcs are enabled
 177                  *
 178                  * NOTE: It is safe to access crtc->enabled of other crtcs
 179                  * without holding either the mode_config lock or the other
 180                  * crtc's lock as long as write access to this flag _always_
 181                  * grabs all locks.
 182                  */
 183                 list_for_each_entry(crtc_p, &crtc->dev->mode_config.crtc_list, head) {
 184                         if (crtc_p->enabled)
 185                                 i++;
 186                 }
 187                 if (i > 1) {
 188                         int cursor_end, frame_end;
 189
 190                         cursor_end = x + w;
 191                         frame_end = crtc->x + crtc->mode.crtc_hdisplay;
 192                         if (cursor_end >= frame_end) {
 193                                 w = w - (cursor_end - frame_end);
 194                                 if (!(frame_end & 0x7f))
 195                                         w--;
 196                         } else if (cursor_end <= 0) {
 197                                 goto out_of_bounds;
 198                         } else if (!(cursor_end & 0x7f)) {
 199                                 w--;
 200                         }
 201                         if (w <= 0) {
 202                                 goto out_of_bounds;
 203                         }
 204                 }
 205         }
 206
 207         if (x <= (crtc->x - w) || y <= (crtc->y - radeon_crtc->cursor_height) ||
 208             x >= (crtc->x + crtc->mode.crtc_hdisplay) ||
 209             y >= (crtc->y + crtc->mode.crtc_vdisplay))
 210                 goto out_of_bounds;
 211
 212         x += xorigin;
 213         y += yorigin;
 214
 215         if (ASIC_IS_DCE4(rdev)) {
 216                 WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y);
 217                 WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 218                 WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset,
 219                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 220         } else if (ASIC_IS_AVIVO(rdev)) {
 221                 WREG32(AVIVO_D1CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y);
 222                 WREG32(AVIVO_D1CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 223                 WREG32(AVIVO_D1CUR_SIZE + radeon_crtc->crtc_offset,
 224                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 225         } else {
 226                 x -= crtc->x;
 227                 y -= crtc->y;
 228
 229                 if (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)
 230                         y *= 2;
 231
 232                 WREG32(RADEON_CUR_HORZ_VERT_OFF + radeon_crtc->crtc_offset,
 233                        (RADEON_CUR_LOCK
 234                         | (xorigin << 16)
 235                         | yorigin));
 236                 WREG32(RADEON_CUR_HORZ_VERT_POSN + radeon_crtc->crtc_offset,
 237                        (RADEON_CUR_LOCK
 238                         | (x << 16)
 239                         | y));
 240                 /* offset is from DISP(2)_BASE_ADDRESS */
 241                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset,
 242                        radeon_crtc->cursor_addr - radeon_crtc->legacy_display_base_addr +
 243                        yorigin * 256);
 244         }
 245
 246         if (radeon_crtc->cursor_out_of_bounds) {
 247                 radeon_crtc->cursor_out_of_bounds = false;
 248                 if (radeon_crtc->cursor_bo)
 249                         radeon_show_cursor(crtc);
 250         }
 251
 252         return 0;
 253
 254  out_of_bounds:
 255         if (!radeon_crtc->cursor_out_of_bounds) {
 256                 radeon_hide_cursor(crtc);
 257                 radeon_crtc->cursor_out_of_bounds = true;
 258         }
 259         return 0;
 260 }
 261
 262 int radeon_crtc_cursor_move(struct drm_crtc *crtc,
 263                             int x, int y)
 264 {
 265         int ret;
 266
 267         radeon_lock_cursor(crtc, true);
 268         ret = radeon_cursor_move_locked(crtc, x, y);
 269         radeon_lock_cursor(crtc, false);
 270
 271         return ret;
 272 }
 273
 274 int radeon_crtc_cursor_set2(struct drm_crtc *crtc,
 275                             struct drm_file *file_priv,
 276                             uint32_t handle,
 277                             uint32_t width,
 278                             uint32_t height,
 279                             int32_t hot_x,
 280                             int32_t hot_y)
 281 {
 282         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 283         struct radeon_device *rdev = crtc->dev->dev_private;
 284         struct drm_gem_object *obj;
 285         struct radeon_bo *robj;
 286         int ret;
 287
 288         if (!handle) {
 289                 /* turn off cursor */
 290                 radeon_hide_cursor(crtc);
 291                 obj = NULL;
 292                 goto unpin;
 293         }
 294
 295         if ((width > radeon_crtc->max_cursor_width) ||
 296             (height > radeon_crtc->max_cursor_height)) {
 297                 DRM_ERROR("bad cursor width or height %d x %d\n", width, height);
 298                 return -EINVAL;
 299         }
 300
 301         obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 302         if (!obj) {
 303                 DRM_ERROR("Cannot find cursor object %x for crtc %d\n", handle, radeon_crtc->crtc_id);
 304                 return -ENOENT;
 305         }
 306
 307         robj = gem_to_radeon_bo(obj);
 308         ret = radeon_bo_reserve(robj, false);
 309         if (ret != 0) {
 310                 drm_gem_object_unreference_unlocked(obj);
 311                 return ret;
 312         }
 313         /* Only 27 bit offset for legacy cursor */
 314         ret = radeon_bo_pin_restricted(robj, RADEON_GEM_DOMAIN_VRAM,
 315                                        ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
 316                                        &radeon_crtc->cursor_addr);
 317         radeon_bo_unreserve(robj);
 318         if (ret) {
 319                 DRM_ERROR("Failed to pin new cursor BO (%d)\n", ret);
 320                 drm_gem_object_unreference_unlocked(obj);
 321                 return ret;
 322         }
 323
 324         radeon_lock_cursor(crtc, true);
 325
 326         if (width != radeon_crtc->cursor_width ||
 327             height != radeon_crtc->cursor_height ||
 328             hot_x != radeon_crtc->cursor_hot_x ||
 329             hot_y != radeon_crtc->cursor_hot_y) {
 330                 int x, y;
 331
 332                 x = radeon_crtc->cursor_x + radeon_crtc->cursor_hot_x - hot_x;
 333                 y = radeon_crtc->cursor_y + radeon_crtc->cursor_hot_y - hot_y;
 334
 335                 radeon_crtc->cursor_width = width;
 336                 radeon_crtc->cursor_height = height;
 337                 radeon_crtc->cursor_hot_x = hot_x;
 338                 radeon_crtc->cursor_hot_y = hot_y;
 339
 340                 radeon_cursor_move_locked(crtc, x, y);
 341         }
 342
 343         radeon_show_cursor(crtc);
 344
 345         radeon_lock_cursor(crtc, false);
 346
 347 unpin:
 348         if (radeon_crtc->cursor_bo) {
 349                 struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
 350                 ret = radeon_bo_reserve(robj, false);
 351                 if (likely(ret == 0)) {
 352                         radeon_bo_unpin(robj);
 353                         radeon_bo_unreserve(robj);
 354                 }
 355                 drm_gem_object_unreference_unlocked(radeon_crtc->cursor_bo);
 356         }
 357
 358         radeon_crtc->cursor_bo = obj;
 359         return 0;
 360 }
 361
 362 /**
 363  * radeon_cursor_reset - Re-set the current cursor, if any.
 364  *
 365  * @crtc: drm crtc
 366  *
 367  * If the CRTC passed in currently has a cursor assigned, this function
 368  * makes sure it's visible.
 369  */
 370 void radeon_cursor_reset(struct drm_crtc *crtc)
 371 {
 372         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 373
 374         if (radeon_crtc->cursor_bo) {
 375                 radeon_lock_cursor(crtc, true);
 376
 377                 radeon_cursor_move_locked(crtc, radeon_crtc->cursor_x,
 378                                           radeon_crtc->cursor_y);
 379
 380                 radeon_show_cursor(crtc);
 381
 382                 radeon_lock_cursor(crtc, false);
 383         }
 384 }