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 #include <linux/vmalloc.h>
  35
  36 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
  37                        struct drm_file *file_priv)
  38 {
  39         struct vmw_private *dev_priv = vmw_priv(dev);
  40         struct drm_vmw_getparam_arg *param =
  41             (struct drm_vmw_getparam_arg *)data;
  42         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
  43
  44         switch (param->param) {
  45         case DRM_VMW_PARAM_NUM_STREAMS:
  46                 param->value = vmw_overlay_num_overlays(dev_priv);
  47                 break;
  48         case DRM_VMW_PARAM_NUM_FREE_STREAMS:
  49                 param->value = vmw_overlay_num_free_overlays(dev_priv);
  50                 break;
  51         case DRM_VMW_PARAM_3D:
  52                 param->value = vmw_supports_3d(dev_priv) ? 1 : 0;
  53                 break;
  54         case DRM_VMW_PARAM_HW_CAPS:
  55                 param->value = dev_priv->capabilities;
  56                 break;
  57         case DRM_VMW_PARAM_HW_CAPS2:
  58                 param->value = dev_priv->capabilities2;
  59                 break;
  60         case DRM_VMW_PARAM_FIFO_CAPS:
  61                 param->value = vmw_fifo_caps(dev_priv);
  62                 break;
  63         case DRM_VMW_PARAM_MAX_FB_SIZE:
  64                 param->value = dev_priv->max_primary_mem;
  65                 break;
  66         case DRM_VMW_PARAM_FIFO_HW_VERSION:
  67         {
  68                 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
  69                         param->value = SVGA3D_HWVERSION_WS8_B1;
  70                 else
  71                         param->value = vmw_fifo_mem_read(
  72                                                dev_priv,
  73                                                ((vmw_fifo_caps(dev_priv) &
  74                                                  SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
  75                                                         SVGA_FIFO_3D_HWVERSION_REVISED :
  76                                                         SVGA_FIFO_3D_HWVERSION));
  77                 break;
  78         }
  79         case DRM_VMW_PARAM_MAX_SURF_MEMORY:
  80                 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
  81                     !vmw_fp->gb_aware)
  82                         param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
  83                 else
  84                         param->value = dev_priv->memory_size;
  85                 break;
  86         case DRM_VMW_PARAM_3D_CAPS_SIZE:
  87                 param->value = vmw_devcaps_size(dev_priv, vmw_fp->gb_aware);
  88                 break;
  89         case DRM_VMW_PARAM_MAX_MOB_MEMORY:
  90                 vmw_fp->gb_aware = true;
  91                 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
  92                 break;
  93         case DRM_VMW_PARAM_MAX_MOB_SIZE:
  94                 param->value = dev_priv->max_mob_size;
  95                 break;
  96         case DRM_VMW_PARAM_SCREEN_TARGET:
  97                 param->value =
  98                         (dev_priv->active_display_unit == vmw_du_screen_target);
  99                 break;
 100         case DRM_VMW_PARAM_DX:
 101                 param->value = has_sm4_context(dev_priv);
 102                 break;
 103         case DRM_VMW_PARAM_SM4_1:
 104                 param->value = has_sm4_1_context(dev_priv);
 105                 break;
 106         case DRM_VMW_PARAM_SM5:
 107                 param->value = has_sm5_context(dev_priv);
 108                 break;
 109         case DRM_VMW_PARAM_GL43:
 110                 param->value = has_gl43_context(dev_priv);
 111                 break;
 112         case DRM_VMW_PARAM_DEVICE_ID:
 113                 param->value = to_pci_dev(dev_priv->drm.dev)->device;
 114                 break;
 115         default:
 116                 return -EINVAL;
 117         }
 118
 119         return 0;
 120 }
 121
 122
 123 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
 124                          struct drm_file *file_priv)
 125 {
 126         struct drm_vmw_get_3d_cap_arg *arg =
 127                 (struct drm_vmw_get_3d_cap_arg *) data;
 128         struct vmw_private *dev_priv = vmw_priv(dev);
 129         uint32_t size;
 130         void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
 131         void *bounce = NULL;
 132         int ret;
 133         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
 134
 135         if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
 136                 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n");
 137                 return -EINVAL;
 138         }
 139
 140         size = vmw_devcaps_size(dev_priv, vmw_fp->gb_aware);
 141         if (unlikely(size == 0)) {
 142                 DRM_ERROR("Failed to figure out the devcaps size (no 3D).\n");
 143                 return -ENOMEM;
 144         }
 145
 146         if (arg->max_size < size)
 147                 size = arg->max_size;
 148
 149         bounce = vzalloc(size);
 150         if (unlikely(bounce == NULL)) {
 151                 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
 152                 return -ENOMEM;
 153         }
 154
 155         ret = vmw_devcaps_copy(dev_priv, vmw_fp->gb_aware, bounce, size);
 156         if (unlikely (ret != 0))
 157                 goto out_err;
 158
 159         ret = copy_to_user(buffer, bounce, size);
 160         if (ret)
 161                 ret = -EFAULT;
 162 out_err:
 163         vfree(bounce);
 164
 165         if (unlikely(ret != 0))
 166                 DRM_ERROR("Failed to report 3D caps info.\n");
 167
 168         return ret;
 169 }
 170
 171 int vmw_present_ioctl(struct drm_device *dev, void *data,
 172                       struct drm_file *file_priv)
 173 {
 174         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 175         struct vmw_private *dev_priv = vmw_priv(dev);
 176         struct drm_vmw_present_arg *arg =
 177                 (struct drm_vmw_present_arg *)data;
 178         struct vmw_surface *surface;
 179         struct drm_vmw_rect __user *clips_ptr;
 180         struct drm_vmw_rect *clips = NULL;
 181         struct drm_framebuffer *fb;
 182         struct vmw_framebuffer *vfb;
 183         struct vmw_resource *res;
 184         uint32_t num_clips;
 185         int ret;
 186
 187         num_clips = arg->num_clips;
 188         clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 189
 190         if (unlikely(num_clips == 0))
 191                 return 0;
 192
 193         if (clips_ptr == NULL) {
 194                 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n");
 195                 ret = -EINVAL;
 196                 goto out_clips;
 197         }
 198
 199         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 200         if (clips == NULL) {
 201                 DRM_ERROR("Failed to allocate clip rect list.\n");
 202                 ret = -ENOMEM;
 203                 goto out_clips;
 204         }
 205
 206         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 207         if (ret) {
 208                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 209                 ret = -EFAULT;
 210                 goto out_no_copy;
 211         }
 212
 213         drm_modeset_lock_all(dev);
 214
 215         fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
 216         if (!fb) {
 217                 VMW_DEBUG_USER("Invalid framebuffer id.\n");
 218                 ret = -ENOENT;
 219                 goto out_no_fb;
 220         }
 221         vfb = vmw_framebuffer_to_vfb(fb);
 222
 223         ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
 224                                               user_surface_converter,
 225                                               &res);
 226         if (ret)
 227                 goto out_no_surface;
 228
 229         surface = vmw_res_to_srf(res);
 230         ret = vmw_kms_present(dev_priv, file_priv,
 231                               vfb, surface, arg->sid,
 232                               arg->dest_x, arg->dest_y,
 233                               clips, num_clips);
 234
 235         /* vmw_user_surface_lookup takes one ref so does new_fb */
 236         vmw_surface_unreference(&surface);
 237
 238 out_no_surface:
 239         drm_framebuffer_put(fb);
 240 out_no_fb:
 241         drm_modeset_unlock_all(dev);
 242 out_no_copy:
 243         kfree(clips);
 244 out_clips:
 245         return ret;
 246 }
 247
 248 int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 249                                struct drm_file *file_priv)
 250 {
 251         struct vmw_private *dev_priv = vmw_priv(dev);
 252         struct drm_vmw_present_readback_arg *arg =
 253                 (struct drm_vmw_present_readback_arg *)data;
 254         struct drm_vmw_fence_rep __user *user_fence_rep =
 255                 (struct drm_vmw_fence_rep __user *)
 256                 (unsigned long)arg->fence_rep;
 257         struct drm_vmw_rect __user *clips_ptr;
 258         struct drm_vmw_rect *clips = NULL;
 259         struct drm_framebuffer *fb;
 260         struct vmw_framebuffer *vfb;
 261         uint32_t num_clips;
 262         int ret;
 263
 264         num_clips = arg->num_clips;
 265         clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 266
 267         if (unlikely(num_clips == 0))
 268                 return 0;
 269
 270         if (clips_ptr == NULL) {
 271                 VMW_DEBUG_USER("Argument clips_ptr must be specified.\n");
 272                 ret = -EINVAL;
 273                 goto out_clips;
 274         }
 275
 276         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 277         if (clips == NULL) {
 278                 DRM_ERROR("Failed to allocate clip rect list.\n");
 279                 ret = -ENOMEM;
 280                 goto out_clips;
 281         }
 282
 283         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 284         if (ret) {
 285                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 286                 ret = -EFAULT;
 287                 goto out_no_copy;
 288         }
 289
 290         drm_modeset_lock_all(dev);
 291
 292         fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
 293         if (!fb) {
 294                 VMW_DEBUG_USER("Invalid framebuffer id.\n");
 295                 ret = -ENOENT;
 296                 goto out_no_fb;
 297         }
 298
 299         vfb = vmw_framebuffer_to_vfb(fb);
 300         if (!vfb->bo) {
 301                 VMW_DEBUG_USER("Framebuffer not buffer backed.\n");
 302                 ret = -EINVAL;
 303                 goto out_no_ttm_lock;
 304         }
 305
 306         ret = vmw_kms_readback(dev_priv, file_priv,
 307                                vfb, user_fence_rep,
 308                                clips, num_clips);
 309
 310 out_no_ttm_lock:
 311         drm_framebuffer_put(fb);
 312 out_no_fb:
 313         drm_modeset_unlock_all(dev);
 314 out_no_copy:
 315         kfree(clips);
 316 out_clips:
 317         return ret;
 318 }