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 (ASIC_IS_DCE4(rdev)) {
  94                 WREG32(RADEON_MM_INDEX, EVERGREEN_CUR_CONTROL + radeon_crtc->crtc_offset);
  95                 WREG32(RADEON_MM_DATA, EVERGREEN_CURSOR_EN |
  96                        EVERGREEN_CURSOR_MODE(EVERGREEN_CURSOR_24_8_PRE_MULT) |
  97                        EVERGREEN_CURSOR_URGENT_CONTROL(EVERGREEN_CURSOR_URGENT_1_2));
  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 > radeon_crtc->max_cursor_width) ||
 168             (height > radeon_crtc->max_cursor_height)) {
 169                 DRM_ERROR("bad cursor width or height %d x %d\n", width, height);
 170                 return -EINVAL;
 171         }
 172
 173         obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 174         if (!obj) {
 175                 DRM_ERROR("Cannot find cursor object %x for crtc %d\n", handle, radeon_crtc->crtc_id);
 176                 return -ENOENT;
 177         }
 178
 179         robj = gem_to_radeon_bo(obj);
 180         ret = radeon_bo_reserve(robj, false);
 181         if (unlikely(ret != 0))
 182                 goto fail;
 183         /* Only 27 bit offset for legacy cursor */
 184         ret = radeon_bo_pin_restricted(robj, RADEON_GEM_DOMAIN_VRAM,
 185                                        ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27,
 186                                        &gpu_addr);
 187         radeon_bo_unreserve(robj);
 188         if (ret)
 189                 goto fail;
 190
 191         radeon_crtc->cursor_width = width;
 192         radeon_crtc->cursor_height = height;
 193
 194         radeon_lock_cursor(crtc, true);
 195         radeon_set_cursor(crtc, obj, gpu_addr);
 196         radeon_show_cursor(crtc);
 197         radeon_lock_cursor(crtc, false);
 198
 199 unpin:
 200         if (radeon_crtc->cursor_bo) {
 201                 robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
 202                 ret = radeon_bo_reserve(robj, false);
 203                 if (likely(ret == 0)) {
 204                         radeon_bo_unpin(robj);
 205                         radeon_bo_unreserve(robj);
 206                 }
 207                 drm_gem_object_unreference_unlocked(radeon_crtc->cursor_bo);
 208         }
 209
 210         radeon_crtc->cursor_bo = obj;
 211         return 0;
 212 fail:
 213         drm_gem_object_unreference_unlocked(obj);
 214
 215         return ret;
 216 }
 217
 218 int radeon_crtc_cursor_move(struct drm_crtc *crtc,
 219                             int x, int y)
 220 {
 221         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 222         struct radeon_device *rdev = crtc->dev->dev_private;
 223         int xorigin = 0, yorigin = 0;
 224         int w = radeon_crtc->cursor_width;
 225
 226         if (ASIC_IS_AVIVO(rdev)) {
 227                 /* avivo cursor are offset into the total surface */
 228                 x += crtc->x;
 229                 y += crtc->y;
 230         }
 231         DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
 232
 233         if (x < 0) {
 234                 xorigin = min(-x, radeon_crtc->max_cursor_width - 1);
 235                 x = 0;
 236         }
 237         if (y < 0) {
 238                 yorigin = min(-y, radeon_crtc->max_cursor_height - 1);
 239                 y = 0;
 240         }
 241
 242         /* fixed on DCE6 and newer */
 243         if (ASIC_IS_AVIVO(rdev) && !ASIC_IS_DCE6(rdev)) {
 244                 int i = 0;
 245                 struct drm_crtc *crtc_p;
 246
 247                 /*
 248                  * avivo cursor image can't end on 128 pixel boundary or
 249                  * go past the end of the frame if both crtcs are enabled
 250                  *
 251                  * NOTE: It is safe to access crtc->enabled of other crtcs
 252                  * without holding either the mode_config lock or the other
 253                  * crtc's lock as long as write access to this flag _always_
 254                  * grabs all locks.
 255                  */
 256                 list_for_each_entry(crtc_p, &crtc->dev->mode_config.crtc_list, head) {
 257                         if (crtc_p->enabled)
 258                                 i++;
 259                 }
 260                 if (i > 1) {
 261                         int cursor_end, frame_end;
 262
 263                         cursor_end = x - xorigin + w;
 264                         frame_end = crtc->x + crtc->mode.crtc_hdisplay;
 265                         if (cursor_end >= frame_end) {
 266                                 w = w - (cursor_end - frame_end);
 267                                 if (!(frame_end & 0x7f))
 268                                         w--;
 269                         } else {
 270                                 if (!(cursor_end & 0x7f))
 271                                         w--;
 272                         }
 273                         if (w <= 0) {
 274                                 w = 1;
 275                                 cursor_end = x - xorigin + w;
 276                                 if (!(cursor_end & 0x7f)) {
 277                                         x--;
 278                                         WARN_ON_ONCE(x < 0);
 279                                 }
 280                         }
 281                 }
 282         }
 283
 284         radeon_lock_cursor(crtc, true);
 285         if (ASIC_IS_DCE4(rdev)) {
 286                 WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y);
 287                 WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 288                 WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset,
 289                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 290         } else if (ASIC_IS_AVIVO(rdev)) {
 291                 WREG32(AVIVO_D1CUR_POSITION + radeon_crtc->crtc_offset, (x << 16) | y);
 292                 WREG32(AVIVO_D1CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 293                 WREG32(AVIVO_D1CUR_SIZE + radeon_crtc->crtc_offset,
 294                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 295         } else {
 296                 if (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)
 297                         y *= 2;
 298
 299                 WREG32(RADEON_CUR_HORZ_VERT_OFF + radeon_crtc->crtc_offset,
 300                        (RADEON_CUR_LOCK
 301                         | (xorigin << 16)
 302                         | yorigin));
 303                 WREG32(RADEON_CUR_HORZ_VERT_POSN + radeon_crtc->crtc_offset,
 304                        (RADEON_CUR_LOCK
 305                         | (x << 16)
 306                         | y));
 307                 /* offset is from DISP(2)_BASE_ADDRESS */
 308                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, (radeon_crtc->legacy_cursor_offset +
 309                                                                       (yorigin * 256)));
 310         }
 311         radeon_lock_cursor(crtc, false);
 312
 313         return 0;
 314 }