drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /**************************************************************************
   3  *
   4  * Copyright 2009-2015 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 <drm/vmwgfx_drm.h>
  31 #include "vmwgfx_kms.h"
  32
  33 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
  34                        struct drm_file *file_priv)
  35 {
  36         struct vmw_private *dev_priv = vmw_priv(dev);
  37         struct drm_vmw_getparam_arg *param =
  38             (struct drm_vmw_getparam_arg *)data;
  39         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
  40
  41         switch (param->param) {
  42         case DRM_VMW_PARAM_NUM_STREAMS:
  43                 param->value = vmw_overlay_num_overlays(dev_priv);
  44                 break;
  45         case DRM_VMW_PARAM_NUM_FREE_STREAMS:
  46                 param->value = vmw_overlay_num_free_overlays(dev_priv);
  47                 break;
  48         case DRM_VMW_PARAM_3D:
  49                 param->value = vmw_supports_3d(dev_priv) ? 1 : 0;
  50                 break;
  51         case DRM_VMW_PARAM_HW_CAPS:
  52                 param->value = dev_priv->capabilities;
  53                 break;
  54         case DRM_VMW_PARAM_HW_CAPS2:
  55                 param->value = dev_priv->capabilities2;
  56                 break;
  57         case DRM_VMW_PARAM_FIFO_CAPS:
  58                 param->value = vmw_fifo_caps(dev_priv);
  59                 break;
  60         case DRM_VMW_PARAM_MAX_FB_SIZE:
  61                 param->value = dev_priv->prim_bb_mem;
  62                 break;
  63         case DRM_VMW_PARAM_FIFO_HW_VERSION:
  64         {
  65                 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) {
  66                         param->value = SVGA3D_HWVERSION_WS8_B1;
  67                         break;
  68                 }
  69
  70                 param->value =
  71                         vmw_fifo_mem_read(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         default:
 109                 return -EINVAL;
 110         }
 111
 112         return 0;
 113 }
 114
 115
 116 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
 117                          struct drm_file *file_priv)
 118 {
 119         struct drm_vmw_get_3d_cap_arg *arg =
 120                 (struct drm_vmw_get_3d_cap_arg *) data;
 121         struct vmw_private *dev_priv = vmw_priv(dev);
 122         uint32_t size;
 123         void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
 124         void *bounce = NULL;
 125         int ret;
 126         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
 127
 128         if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
 129                 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n");
 130                 return -EINVAL;
 131         }
 132
 133         size = vmw_devcaps_size(dev_priv, vmw_fp->gb_aware);
 134         if (unlikely(size == 0)) {
 135                 DRM_ERROR("Failed to figure out the devcaps size (no 3D).\n");
 136                 return -ENOMEM;
 137         }
 138
 139         if (arg->max_size < size)
 140                 size = arg->max_size;
 141
 142         bounce = vzalloc(size);
 143         if (unlikely(bounce == NULL)) {
 144                 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
 145                 return -ENOMEM;
 146         }
 147
 148         ret = vmw_devcaps_copy(dev_priv, vmw_fp->gb_aware, bounce, size);
 149         if (unlikely (ret != 0))
 150                 goto out_err;
 151
 152         ret = copy_to_user(buffer, bounce, size);
 153         if (ret)
 154                 ret = -EFAULT;
 155 out_err:
 156         vfree(bounce);
 157
 158         if (unlikely(ret != 0))
 159                 DRM_ERROR("Failed to report 3D caps info.\n");
 160
 161         return ret;
 162 }
 163
 164 int vmw_present_ioctl(struct drm_device *dev, void *data,
 165                       struct drm_file *file_priv)
 166 {
 167         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 168         struct vmw_private *dev_priv = vmw_priv(dev);
 169         struct drm_vmw_present_arg *arg =
 170                 (struct drm_vmw_present_arg *)data;
 171         struct vmw_surface *surface;
 172         struct drm_vmw_rect __user *clips_ptr;
 173         struct drm_vmw_rect *clips = NULL;
 174         struct drm_framebuffer *fb;
 175         struct vmw_framebuffer *vfb;
 176         struct vmw_resource *res;
 177         uint32_t num_clips;
 178         int ret;
 179
 180         num_clips = arg->num_clips;
 181         clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 182
 183         if (unlikely(num_clips == 0))
 184                 return 0;
 185
 186         if (clips_ptr == NULL) {
 187                 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n");
 188                 ret = -EINVAL;
 189                 goto out_clips;
 190         }
 191
 192         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 193         if (clips == NULL) {
 194                 DRM_ERROR("Failed to allocate clip rect list.\n");
 195                 ret = -ENOMEM;
 196                 goto out_clips;
 197         }
 198
 199         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 200         if (ret) {
 201                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 202                 ret = -EFAULT;
 203                 goto out_no_copy;
 204         }
 205
 206         drm_modeset_lock_all(dev);
 207
 208         fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
 209         if (!fb) {
 210                 VMW_DEBUG_USER("Invalid framebuffer id.\n");
 211                 ret = -ENOENT;
 212                 goto out_no_fb;
 213         }
 214         vfb = vmw_framebuffer_to_vfb(fb);
 215
 216         ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
 217                                               user_surface_converter,
 218                                               &res);
 219         if (ret)
 220                 goto out_no_surface;
 221
 222         surface = vmw_res_to_srf(res);
 223         ret = vmw_kms_present(dev_priv, file_priv,
 224                               vfb, surface, arg->sid,
 225                               arg->dest_x, arg->dest_y,
 226                               clips, num_clips);
 227
 228         /* vmw_user_surface_lookup takes one ref so does new_fb */
 229         vmw_surface_unreference(&surface);
 230
 231 out_no_surface:
 232         drm_framebuffer_put(fb);
 233 out_no_fb:
 234         drm_modeset_unlock_all(dev);
 235 out_no_copy:
 236         kfree(clips);
 237 out_clips:
 238         return ret;
 239 }
 240
 241 int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 242                                struct drm_file *file_priv)
 243 {
 244         struct vmw_private *dev_priv = vmw_priv(dev);
 245         struct drm_vmw_present_readback_arg *arg =
 246                 (struct drm_vmw_present_readback_arg *)data;
 247         struct drm_vmw_fence_rep __user *user_fence_rep =
 248                 (struct drm_vmw_fence_rep __user *)
 249                 (unsigned long)arg->fence_rep;
 250         struct drm_vmw_rect __user *clips_ptr;
 251         struct drm_vmw_rect *clips = NULL;
 252         struct drm_framebuffer *fb;
 253         struct vmw_framebuffer *vfb;
 254         uint32_t num_clips;
 255         int ret;
 256
 257         num_clips = arg->num_clips;
 258         clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 259
 260         if (unlikely(num_clips == 0))
 261                 return 0;
 262
 263         if (clips_ptr == NULL) {
 264                 VMW_DEBUG_USER("Argument clips_ptr must be specified.\n");
 265                 ret = -EINVAL;
 266                 goto out_clips;
 267         }
 268
 269         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 270         if (clips == NULL) {
 271                 DRM_ERROR("Failed to allocate clip rect list.\n");
 272                 ret = -ENOMEM;
 273                 goto out_clips;
 274         }
 275
 276         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 277         if (ret) {
 278                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 279                 ret = -EFAULT;
 280                 goto out_no_copy;
 281         }
 282
 283         drm_modeset_lock_all(dev);
 284
 285         fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
 286         if (!fb) {
 287                 VMW_DEBUG_USER("Invalid framebuffer id.\n");
 288                 ret = -ENOENT;
 289                 goto out_no_fb;
 290         }
 291
 292         vfb = vmw_framebuffer_to_vfb(fb);
 293         if (!vfb->bo) {
 294                 VMW_DEBUG_USER("Framebuffer not buffer backed.\n");
 295                 ret = -EINVAL;
 296                 goto out_no_ttm_lock;
 297         }
 298
 299         ret = vmw_kms_readback(dev_priv, file_priv,
 300                                vfb, user_fence_rep,
 301                                clips, num_clips);
 302
 303 out_no_ttm_lock:
 304         drm_framebuffer_put(fb);
 305 out_no_fb:
 306         drm_modeset_unlock_all(dev);
 307 out_no_copy:
 308         kfree(clips);
 309 out_clips:
 310         return ret;
 311 }