drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /**************************************************************************
   3  *
   4  * Copyright 2009-2022 VMware, Inc., Palo Alto, CA., USA
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_drv.h"
  29 #include "vmwgfx_devcaps.h"
  30 #include "vmwgfx_kms.h"
  31
  32 #include <drm/vmwgfx_drm.h>
  33 #include <linux/pci.h>
  34
  35 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
  36                        struct drm_file *file_priv)
  37 {
  38         struct vmw_private *dev_priv = vmw_priv(dev);
  39         struct drm_vmw_getparam_arg *param =
  40             (struct drm_vmw_getparam_arg *)data;
  41         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
  42
  43         switch (param->param) {
  44         case DRM_VMW_PARAM_NUM_STREAMS:
  45                 param->value = vmw_overlay_num_overlays(dev_priv);
  46                 break;
  47         case DRM_VMW_PARAM_NUM_FREE_STREAMS:
  48                 param->value = vmw_overlay_num_free_overlays(dev_priv);
  49                 break;
  50         case DRM_VMW_PARAM_3D:
  51                 param->value = vmw_supports_3d(dev_priv) ? 1 : 0;
  52                 break;
  53         case DRM_VMW_PARAM_HW_CAPS:
  54                 param->value = dev_priv->capabilities;
  55                 break;
  56         case DRM_VMW_PARAM_HW_CAPS2:
  57                 param->value = dev_priv->capabilities2;
  58                 break;
  59         case DRM_VMW_PARAM_FIFO_CAPS:
  60                 param->value = vmw_fifo_caps(dev_priv);
  61                 break;
  62         case DRM_VMW_PARAM_MAX_FB_SIZE:
  63                 param->value = dev_priv->max_primary_mem;
  64                 break;
  65         case DRM_VMW_PARAM_FIFO_HW_VERSION:
  66         {
  67                 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
  68                         param->value = SVGA3D_HWVERSION_WS8_B1;
  69                 else
  70                         param->value = vmw_fifo_mem_read(
  71                                                dev_priv,
  72                                                ((vmw_fifo_caps(dev_priv) &
  73                                                  SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
  74                                                         SVGA_FIFO_3D_HWVERSION_REVISED :
  75                                                         SVGA_FIFO_3D_HWVERSION));
  76                 break;
  77         }
  78         case DRM_VMW_PARAM_MAX_SURF_MEMORY:
  79                 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
  80                     !vmw_fp->gb_aware)
  81                         param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
  82                 else
  83                         param->value = dev_priv->memory_size;
  84                 break;
  85         case DRM_VMW_PARAM_3D_CAPS_SIZE:
  86                 param->value = vmw_devcaps_size(dev_priv, vmw_fp->gb_aware);
  87                 break;
  88         case DRM_VMW_PARAM_MAX_MOB_MEMORY:
  89                 vmw_fp->gb_aware = true;
  90                 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
  91                 break;
  92         case DRM_VMW_PARAM_MAX_MOB_SIZE:
  93                 param->value = dev_priv->max_mob_size;
  94                 break;
  95         case DRM_VMW_PARAM_SCREEN_TARGET:
  96                 param->value =
  97                         (dev_priv->active_display_unit == vmw_du_screen_target);
  98                 break;
  99         case DRM_VMW_PARAM_DX:
 100                 param->value = has_sm4_context(dev_priv);
 101                 break;
 102         case DRM_VMW_PARAM_SM4_1:
 103                 param->value = has_sm4_1_context(dev_priv);
 104                 break;
 105         case DRM_VMW_PARAM_SM5:
 106                 param->value = has_sm5_context(dev_priv);
 107                 break;
 108         case DRM_VMW_PARAM_GL43:
 109                 param->value = has_gl43_context(dev_priv);
 110                 break;
 111         case DRM_VMW_PARAM_DEVICE_ID:
 112                 param->value = to_pci_dev(dev_priv->drm.dev)->device;
 113                 break;
 114         default:
 115                 return -EINVAL;
 116         }
 117
 118         return 0;
 119 }
 120
 121
 122 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
 123                          struct drm_file *file_priv)
 124 {
 125         struct drm_vmw_get_3d_cap_arg *arg =
 126                 (struct drm_vmw_get_3d_cap_arg *) data;
 127         struct vmw_private *dev_priv = vmw_priv(dev);
 128         uint32_t size;
 129         void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
 130         void *bounce = NULL;
 131         int ret;
 132         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
 133
 134         if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
 135                 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n");
 136                 return -EINVAL;
 137         }
 138
 139         size = vmw_devcaps_size(dev_priv, vmw_fp->gb_aware);
 140         if (unlikely(size == 0)) {
 141                 DRM_ERROR("Failed to figure out the devcaps size (no 3D).\n");
 142                 return -ENOMEM;
 143         }
 144
 145         if (arg->max_size < size)
 146                 size = arg->max_size;
 147
 148         bounce = vzalloc(size);
 149         if (unlikely(bounce == NULL)) {
 150                 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
 151                 return -ENOMEM;
 152         }
 153
 154         ret = vmw_devcaps_copy(dev_priv, vmw_fp->gb_aware, bounce, size);
 155         if (unlikely (ret != 0))
 156                 goto out_err;
 157
 158         ret = copy_to_user(buffer, bounce, size);
 159         if (ret)
 160                 ret = -EFAULT;
 161 out_err:
 162         vfree(bounce);
 163
 164         if (unlikely(ret != 0))
 165                 DRM_ERROR("Failed to report 3D caps info.\n");
 166
 167         return ret;
 168 }
 169
 170 int vmw_present_ioctl(struct drm_device *dev, void *data,
 171                       struct drm_file *file_priv)
 172 {
 173         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 174         struct vmw_private *dev_priv = vmw_priv(dev);
 175         struct drm_vmw_present_arg *arg =
 176                 (struct drm_vmw_present_arg *)data;
 177         struct vmw_surface *surface;
 178         struct drm_vmw_rect __user *clips_ptr;
 179         struct drm_vmw_rect *clips = NULL;
 180         struct drm_framebuffer *fb;
 181         struct vmw_framebuffer *vfb;
 182         struct vmw_resource *res;
 183         uint32_t num_clips;
 184         int ret;
 185
 186         num_clips = arg->num_clips;
 187         clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 188
 189         if (unlikely(num_clips == 0))
 190                 return 0;
 191
 192         if (clips_ptr == NULL) {
 193                 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n");
 194                 ret = -EINVAL;
 195                 goto out_clips;
 196         }
 197
 198         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 199         if (clips == NULL) {
 200                 DRM_ERROR("Failed to allocate clip rect list.\n");
 201                 ret = -ENOMEM;
 202                 goto out_clips;
 203         }
 204
 205         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 206         if (ret) {
 207                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 208                 ret = -EFAULT;
 209                 goto out_no_copy;
 210         }
 211
 212         drm_modeset_lock_all(dev);
 213
 214         fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
 215         if (!fb) {
 216                 VMW_DEBUG_USER("Invalid framebuffer id.\n");
 217                 ret = -ENOENT;
 218                 goto out_no_fb;
 219         }
 220         vfb = vmw_framebuffer_to_vfb(fb);
 221
 222         ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
 223                                               user_surface_converter,
 224                                               &res);
 225         if (ret)
 226                 goto out_no_surface;
 227
 228         surface = vmw_res_to_srf(res);
 229         ret = vmw_kms_present(dev_priv, file_priv,
 230                               vfb, surface, arg->sid,
 231                               arg->dest_x, arg->dest_y,
 232                               clips, num_clips);
 233
 234         /* vmw_user_surface_lookup takes one ref so does new_fb */
 235         vmw_surface_unreference(&surface);
 236
 237 out_no_surface:
 238         drm_framebuffer_put(fb);
 239 out_no_fb:
 240         drm_modeset_unlock_all(dev);
 241 out_no_copy:
 242         kfree(clips);
 243 out_clips:
 244         return ret;
 245 }
 246
 247 int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 248                                struct drm_file *file_priv)
 249 {
 250         struct vmw_private *dev_priv = vmw_priv(dev);
 251         struct drm_vmw_present_readback_arg *arg =
 252                 (struct drm_vmw_present_readback_arg *)data;
 253         struct drm_vmw_fence_rep __user *user_fence_rep =
 254                 (struct drm_vmw_fence_rep __user *)
 255                 (unsigned long)arg->fence_rep;
 256         struct drm_vmw_rect __user *clips_ptr;
 257         struct drm_vmw_rect *clips = NULL;
 258         struct drm_framebuffer *fb;
 259         struct vmw_framebuffer *vfb;
 260         uint32_t num_clips;
 261         int ret;
 262
 263         num_clips = arg->num_clips;
 264         clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 265
 266         if (unlikely(num_clips == 0))
 267                 return 0;
 268
 269         if (clips_ptr == NULL) {
 270                 VMW_DEBUG_USER("Argument clips_ptr must be specified.\n");
 271                 ret = -EINVAL;
 272                 goto out_clips;
 273         }
 274
 275         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 276         if (clips == NULL) {
 277                 DRM_ERROR("Failed to allocate clip rect list.\n");
 278                 ret = -ENOMEM;
 279                 goto out_clips;
 280         }
 281
 282         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 283         if (ret) {
 284                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 285                 ret = -EFAULT;
 286                 goto out_no_copy;
 287         }
 288
 289         drm_modeset_lock_all(dev);
 290
 291         fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
 292         if (!fb) {
 293                 VMW_DEBUG_USER("Invalid framebuffer id.\n");
 294                 ret = -ENOENT;
 295                 goto out_no_fb;
 296         }
 297
 298         vfb = vmw_framebuffer_to_vfb(fb);
 299         if (!vfb->bo) {
 300                 VMW_DEBUG_USER("Framebuffer not buffer backed.\n");
 301                 ret = -EINVAL;
 302                 goto out_no_ttm_lock;
 303         }
 304
 305         ret = vmw_kms_readback(dev_priv, file_priv,
 306                                vfb, user_fence_rep,
 307                                clips, num_clips);
 308
 309 out_no_ttm_lock:
 310         drm_framebuffer_put(fb);
 311 out_no_fb:
 312         drm_modeset_unlock_all(dev);
 313 out_no_copy:
 314         kfree(clips);
 315 out_clips:
 316         return ret;
 317 }