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_AVIVO(rdev)) {
  40                 cur_lock = RREG32(AVIVO_D1CUR_UPDATE + radeon_crtc->crtc_offset);
  41                 if (lock)
  42                         cur_lock |= AVIVO_D1CURSOR_UPDATE_LOCK;
  43                 else
  44                         cur_lock &= ~AVIVO_D1CURSOR_UPDATE_LOCK;
  45                 WREG32(AVIVO_D1CUR_UPDATE + radeon_crtc->crtc_offset, cur_lock);
  46         } else {
  47                 cur_lock = RREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset);
  48                 if (lock)
  49                         cur_lock |= RADEON_CUR_LOCK;
  50                 else
  51                         cur_lock &= ~RADEON_CUR_LOCK;
  52                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, cur_lock);
  53         }
  54 }
  55
  56 static void radeon_hide_cursor(struct drm_crtc *crtc)
  57 {
  58         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  59         struct radeon_device *rdev = crtc->dev->dev_private;
  60
  61         if (ASIC_IS_AVIVO(rdev)) {
  62                 WREG32(RADEON_MM_INDEX, AVIVO_D1CUR_CONTROL + radeon_crtc->crtc_offset);
  63                 WREG32(RADEON_MM_DATA, (AVIVO_D1CURSOR_MODE_24BPP << AVIVO_D1CURSOR_MODE_SHIFT));
  64         } else {
  65                 switch (radeon_crtc->crtc_id) {
  66                 case 0:
  67                         WREG32(RADEON_MM_INDEX, RADEON_CRTC_GEN_CNTL);
  68                         break;
  69                 case 1:
  70                         WREG32(RADEON_MM_INDEX, RADEON_CRTC2_GEN_CNTL);
  71                         break;
  72                 default:
  73                         return;
  74                 }
  75                 WREG32_P(RADEON_MM_DATA, 0, ~RADEON_CRTC_CUR_EN);
  76         }
  77 }
  78
  79 static void radeon_show_cursor(struct drm_crtc *crtc)
  80 {
  81         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  82         struct radeon_device *rdev = crtc->dev->dev_private;
  83
  84         if (ASIC_IS_AVIVO(rdev)) {
  85                 WREG32(RADEON_MM_INDEX, AVIVO_D1CUR_CONTROL + radeon_crtc->crtc_offset);
  86                 WREG32(RADEON_MM_DATA, AVIVO_D1CURSOR_EN |
  87                              (AVIVO_D1CURSOR_MODE_24BPP << AVIVO_D1CURSOR_MODE_SHIFT));
  88         } else {
  89                 switch (radeon_crtc->crtc_id) {
  90                 case 0:
  91                         WREG32(RADEON_MM_INDEX, RADEON_CRTC_GEN_CNTL);
  92                         break;
  93                 case 1:
  94                         WREG32(RADEON_MM_INDEX, RADEON_CRTC2_GEN_CNTL);
  95                         break;
  96                 default:
  97                         return;
  98                 }
  99
 100                 WREG32_P(RADEON_MM_DATA, (RADEON_CRTC_CUR_EN |
 101                                           (RADEON_CRTC_CUR_MODE_24BPP << RADEON_CRTC_CUR_MODE_SHIFT)),
 102                          ~(RADEON_CRTC_CUR_EN | RADEON_CRTC_CUR_MODE_MASK));
 103         }
 104 }
 105
 106 static void radeon_set_cursor(struct drm_crtc *crtc, struct drm_gem_object *obj,
 107                               uint32_t gpu_addr)
 108 {
 109         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 110         struct radeon_device *rdev = crtc->dev->dev_private;
 111
 112         if (ASIC_IS_AVIVO(rdev))
 113                 WREG32(AVIVO_D1CUR_SURFACE_ADDRESS + radeon_crtc->crtc_offset, gpu_addr);
 114         else
 115                 /* offset is from DISP(2)_BASE_ADDRESS */
 116                 WREG32(RADEON_CUR_OFFSET + radeon_crtc->crtc_offset, gpu_addr);
 117 }
 118
 119 int radeon_crtc_cursor_set(struct drm_crtc *crtc,
 120                            struct drm_file *file_priv,
 121                            uint32_t handle,
 122                            uint32_t width,
 123                            uint32_t height)
 124 {
 125         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 126         struct drm_gem_object *obj;
 127         uint64_t gpu_addr;
 128         int ret;
 129
 130         if (!handle) {
 131                 /* turn off cursor */
 132                 radeon_hide_cursor(crtc);
 133                 obj = NULL;
 134                 goto unpin;
 135         }
 136
 137         if ((width > CURSOR_WIDTH) || (height > CURSOR_HEIGHT)) {
 138                 DRM_ERROR("bad cursor width or height %d x %d\n", width, height);
 139                 return -EINVAL;
 140         }
 141
 142         radeon_crtc->cursor_width = width;
 143         radeon_crtc->cursor_height = height;
 144
 145         obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
 146         if (!obj) {
 147                 DRM_ERROR("Cannot find cursor object %x for crtc %d\n", handle, radeon_crtc->crtc_id);
 148                 return -EINVAL;
 149         }
 150
 151         ret = radeon_gem_object_pin(obj, RADEON_GEM_DOMAIN_VRAM, &gpu_addr);
 152         if (ret)
 153                 goto fail;
 154
 155         radeon_lock_cursor(crtc, true);
 156         /* XXX only 27 bit offset for legacy cursor */
 157         radeon_set_cursor(crtc, obj, gpu_addr);
 158         radeon_show_cursor(crtc);
 159         radeon_lock_cursor(crtc, false);
 160
 161 unpin:
 162         if (radeon_crtc->cursor_bo) {
 163                 radeon_gem_object_unpin(radeon_crtc->cursor_bo);
 164                 mutex_lock(&crtc->dev->struct_mutex);
 165                 drm_gem_object_unreference(radeon_crtc->cursor_bo);
 166                 mutex_unlock(&crtc->dev->struct_mutex);
 167         }
 168
 169         radeon_crtc->cursor_bo = obj;
 170         return 0;
 171 fail:
 172         mutex_lock(&crtc->dev->struct_mutex);
 173         drm_gem_object_unreference(obj);
 174         mutex_unlock(&crtc->dev->struct_mutex);
 175
 176         return 0;
 177 }
 178
 179 int radeon_crtc_cursor_move(struct drm_crtc *crtc,
 180                             int x, int y)
 181 {
 182         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 183         struct radeon_device *rdev = crtc->dev->dev_private;
 184         int xorigin = 0, yorigin = 0;
 185
 186         if (x < 0)
 187                 xorigin = -x + 1;
 188         if (y < 0)
 189                 yorigin = -y + 1;
 190         if (xorigin >= CURSOR_WIDTH)
 191                 xorigin = CURSOR_WIDTH - 1;
 192         if (yorigin >= CURSOR_HEIGHT)
 193                 yorigin = CURSOR_HEIGHT - 1;
 194
 195         radeon_lock_cursor(crtc, true);
 196         if (ASIC_IS_AVIVO(rdev)) {
 197                 int w = radeon_crtc->cursor_width;
 198                 int i = 0;
 199                 struct drm_crtc *crtc_p;
 200
 201                 /* avivo cursor are offset into the total surface */
 202                 x += crtc->x;
 203                 y += crtc->y;
 204                 DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y);
 205
 206                 /* avivo cursor image can't end on 128 pixel boundry or
 207                  * go past the end of the frame if both crtcs are enabled
 208                  */
 209                 list_for_each_entry(crtc_p, &crtc->dev->mode_config.crtc_list, head) {
 210                         if (crtc_p->enabled)
 211                                 i++;
 212                 }
 213                 if (i > 1) {
 214                         int cursor_end, frame_end;
 215
 216                         cursor_end = x - xorigin + w;
 217                         frame_end = crtc->x + crtc->mode.crtc_hdisplay;
 218                         if (cursor_end >= frame_end) {
 219                                 w = w - (cursor_end - frame_end);
 220                                 if (!(frame_end & 0x7f))
 221                                         w--;
 222                         } else {
 223                                 if (!(cursor_end & 0x7f))
 224                                         w--;
 225                         }
 226                         if (w <= 0)
 227                                 w = 1;
 228                 }
 229
 230                 WREG32(AVIVO_D1CUR_POSITION + radeon_crtc->crtc_offset,
 231                              ((xorigin ? 0 : x) << 16) |
 232                              (yorigin ? 0 : y));
 233                 WREG32(AVIVO_D1CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin);
 234                 WREG32(AVIVO_D1CUR_SIZE + radeon_crtc->crtc_offset,
 235                        ((w - 1) << 16) | (radeon_crtc->cursor_height - 1));
 236         } else {
 237                 if (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)
 238                         y *= 2;
 239
 240                 WREG32(RADEON_CUR_HORZ_VERT_OFF + radeon_crtc->crtc_offset,
 241                        (RADEON_CUR_LOCK
 242                         | (xorigin << 16)
 243                         | yorigin));
 244                 WREG32(RADEON_CUR_HORZ_VERT_POSN + radeon_crtc->crtc_offset,
 245                        (RADEON_CUR_LOCK
 246                         | ((xorigin ? 0 : x) << 16)
 247                         | (yorigin ? 0 : y)));
 248         }
 249         radeon_lock_cursor(crtc, false);
 250
 251         return 0;
 252 }