Pileus Git - ~andy/linux/blob - drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   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 <drm/vmwgfx_drm.h>
  30 #include "vmwgfx_kms.h"
  31
  32 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
  33                        struct drm_file *file_priv)
  34 {
  35         struct vmw_private *dev_priv = vmw_priv(dev);
  36         struct drm_vmw_getparam_arg *param =
  37             (struct drm_vmw_getparam_arg *)data;
  38
  39         switch (param->param) {
  40         case DRM_VMW_PARAM_NUM_STREAMS:
  41                 param->value = vmw_overlay_num_overlays(dev_priv);
  42                 break;
  43         case DRM_VMW_PARAM_NUM_FREE_STREAMS:
  44                 param->value = vmw_overlay_num_free_overlays(dev_priv);
  45                 break;
  46         case DRM_VMW_PARAM_3D:
  47                 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
  48                 break;
  49         case DRM_VMW_PARAM_HW_CAPS:
  50                 param->value = dev_priv->capabilities;
  51                 break;
  52         case DRM_VMW_PARAM_FIFO_CAPS:
  53                 param->value = dev_priv->fifo.capabilities;
  54                 break;
  55         case DRM_VMW_PARAM_MAX_FB_SIZE:
  56                 param->value = dev_priv->prim_bb_mem;
  57                 break;
  58         case DRM_VMW_PARAM_FIFO_HW_VERSION:
  59         {
  60                 __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
  61                 const struct vmw_fifo_state *fifo = &dev_priv->fifo;
  62
  63                 param->value =
  64                         ioread32(fifo_mem +
  65                                  ((fifo->capabilities &
  66                                    SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
  67                                   SVGA_FIFO_3D_HWVERSION_REVISED :
  68                                   SVGA_FIFO_3D_HWVERSION));
  69                 break;
  70         }
  71         case DRM_VMW_PARAM_MAX_SURF_MEMORY:
  72                 param->value = dev_priv->memory_size;
  73                 break;
  74         case DRM_VMW_PARAM_3D_CAPS_SIZE:
  75                 if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS)
  76                         param->value = SVGA3D_DEVCAP_MAX;
  77                 else
  78                         param->value = (SVGA_FIFO_3D_CAPS_LAST -
  79                                         SVGA_FIFO_3D_CAPS + 1);
  80                 param->value *= sizeof(uint32_t);
  81                 break;
  82         case DRM_VMW_PARAM_MAX_MOB_MEMORY:
  83                 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
  84                 break;
  85         default:
  86                 DRM_ERROR("Illegal vmwgfx get param request: %d\n",
  87                           param->param);
  88                 return -EINVAL;
  89         }
  90
  91         return 0;
  92 }
  93
  94
  95 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
  96                          struct drm_file *file_priv)
  97 {
  98         struct drm_vmw_get_3d_cap_arg *arg =
  99                 (struct drm_vmw_get_3d_cap_arg *) data;
 100         struct vmw_private *dev_priv = vmw_priv(dev);
 101         uint32_t size;
 102         __le32 __iomem *fifo_mem;
 103         void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
 104         void *bounce;
 105         int ret;
 106         bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS);
 107
 108         if (unlikely(arg->pad64 != 0)) {
 109                 DRM_ERROR("Illegal GET_3D_CAP argument.\n");
 110                 return -EINVAL;
 111         }
 112
 113         if (gb_objects)
 114                 size = SVGA3D_DEVCAP_MAX;
 115         else
 116                 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1);
 117
 118         size *= sizeof(uint32_t);
 119
 120         if (arg->max_size < size)
 121                 size = arg->max_size;
 122
 123         bounce = vmalloc(size);
 124         if (unlikely(bounce == NULL)) {
 125                 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
 126                 return -ENOMEM;
 127         }
 128
 129         if (gb_objects) {
 130                 int i;
 131                 uint32_t *bounce32 = (uint32_t *) bounce;
 132
 133                 mutex_lock(&dev_priv->hw_mutex);
 134                 for (i = 0; i < SVGA3D_DEVCAP_MAX; ++i) {
 135                         vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
 136                         *bounce32++ = vmw_read(dev_priv, SVGA_REG_DEV_CAP);
 137                 }
 138                 mutex_unlock(&dev_priv->hw_mutex);
 139
 140         } else {
 141
 142                 fifo_mem = dev_priv->mmio_virt;
 143                 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
 144         }
 145
 146         ret = copy_to_user(buffer, bounce, size);
 147         if (ret)
 148                 ret = -EFAULT;
 149         vfree(bounce);
 150
 151         if (unlikely(ret != 0))
 152                 DRM_ERROR("Failed to report 3D caps info.\n");
 153
 154         return ret;
 155 }
 156
 157 int vmw_present_ioctl(struct drm_device *dev, void *data,
 158                       struct drm_file *file_priv)
 159 {
 160         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
 161         struct vmw_private *dev_priv = vmw_priv(dev);
 162         struct drm_vmw_present_arg *arg =
 163                 (struct drm_vmw_present_arg *)data;
 164         struct vmw_surface *surface;
 165         struct vmw_master *vmaster = vmw_master(file_priv->master);
 166         struct drm_vmw_rect __user *clips_ptr;
 167         struct drm_vmw_rect *clips = NULL;
 168         struct drm_framebuffer *fb;
 169         struct vmw_framebuffer *vfb;
 170         struct vmw_resource *res;
 171         uint32_t num_clips;
 172         int ret;
 173
 174         num_clips = arg->num_clips;
 175         clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
 176
 177         if (unlikely(num_clips == 0))
 178                 return 0;
 179
 180         if (clips_ptr == NULL) {
 181                 DRM_ERROR("Variable clips_ptr must be specified.\n");
 182                 ret = -EINVAL;
 183                 goto out_clips;
 184         }
 185
 186         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 187         if (clips == NULL) {
 188                 DRM_ERROR("Failed to allocate clip rect list.\n");
 189                 ret = -ENOMEM;
 190                 goto out_clips;
 191         }
 192
 193         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 194         if (ret) {
 195                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 196                 ret = -EFAULT;
 197                 goto out_no_copy;
 198         }
 199
 200         drm_modeset_lock_all(dev);
 201
 202         fb = drm_framebuffer_lookup(dev, arg->fb_id);
 203         if (!fb) {
 204                 DRM_ERROR("Invalid framebuffer id.\n");
 205                 ret = -ENOENT;
 206                 goto out_no_fb;
 207         }
 208         vfb = vmw_framebuffer_to_vfb(fb);
 209
 210         ret = ttm_read_lock(&vmaster->lock, true);
 211         if (unlikely(ret != 0))
 212                 goto out_no_ttm_lock;
 213
 214         ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
 215                                               user_surface_converter,
 216                                               &res);
 217         if (ret)
 218                 goto out_no_surface;
 219
 220         surface = vmw_res_to_srf(res);
 221         ret = vmw_kms_present(dev_priv, file_priv,
 222                               vfb, surface, arg->sid,
 223                               arg->dest_x, arg->dest_y,
 224                               clips, num_clips);
 225
 226         /* vmw_user_surface_lookup takes one ref so does new_fb */
 227         vmw_surface_unreference(&surface);
 228
 229 out_no_surface:
 230         ttm_read_unlock(&vmaster->lock);
 231 out_no_ttm_lock:
 232         drm_framebuffer_unreference(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 vmw_master *vmaster = vmw_master(file_priv->master);
 251         struct drm_vmw_rect __user *clips_ptr;
 252         struct drm_vmw_rect *clips = NULL;
 253         struct drm_framebuffer *fb;
 254         struct vmw_framebuffer *vfb;
 255         uint32_t num_clips;
 256         int ret;
 257
 258         num_clips = arg->num_clips;
 259         clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
 260
 261         if (unlikely(num_clips == 0))
 262                 return 0;
 263
 264         if (clips_ptr == NULL) {
 265                 DRM_ERROR("Argument clips_ptr must be specified.\n");
 266                 ret = -EINVAL;
 267                 goto out_clips;
 268         }
 269
 270         clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 271         if (clips == NULL) {
 272                 DRM_ERROR("Failed to allocate clip rect list.\n");
 273                 ret = -ENOMEM;
 274                 goto out_clips;
 275         }
 276
 277         ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
 278         if (ret) {
 279                 DRM_ERROR("Failed to copy clip rects from userspace.\n");
 280                 ret = -EFAULT;
 281                 goto out_no_copy;
 282         }
 283
 284         drm_modeset_lock_all(dev);
 285
 286         fb = drm_framebuffer_lookup(dev, arg->fb_id);
 287         if (!fb) {
 288                 DRM_ERROR("Invalid framebuffer id.\n");
 289                 ret = -ENOENT;
 290                 goto out_no_fb;
 291         }
 292
 293         vfb = vmw_framebuffer_to_vfb(fb);
 294         if (!vfb->dmabuf) {
 295                 DRM_ERROR("Framebuffer not dmabuf backed.\n");
 296                 ret = -EINVAL;
 297                 goto out_no_ttm_lock;
 298         }
 299
 300         ret = ttm_read_lock(&vmaster->lock, true);
 301         if (unlikely(ret != 0))
 302                 goto out_no_ttm_lock;
 303
 304         ret = vmw_kms_readback(dev_priv, file_priv,
 305                                vfb, user_fence_rep,
 306                                clips, num_clips);
 307
 308         ttm_read_unlock(&vmaster->lock);
 309 out_no_ttm_lock:
 310         drm_framebuffer_unreference(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 }
 318
 319
 320 /**
 321  * vmw_fops_poll - wrapper around the drm_poll function
 322  *
 323  * @filp: See the linux fops poll documentation.
 324  * @wait: See the linux fops poll documentation.
 325  *
 326  * Wrapper around the drm_poll function that makes sure the device is
 327  * processing the fifo if drm_poll decides to wait.
 328  */
 329 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
 330 {
 331         struct drm_file *file_priv = filp->private_data;
 332         struct vmw_private *dev_priv =
 333                 vmw_priv(file_priv->minor->dev);
 334
 335         vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
 336         return drm_poll(filp, wait);
 337 }
 338
 339
 340 /**
 341  * vmw_fops_read - wrapper around the drm_read function
 342  *
 343  * @filp: See the linux fops read documentation.
 344  * @buffer: See the linux fops read documentation.
 345  * @count: See the linux fops read documentation.
 346  * offset: See the linux fops read documentation.
 347  *
 348  * Wrapper around the drm_read function that makes sure the device is
 349  * processing the fifo if drm_read decides to wait.
 350  */
 351 ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
 352                       size_t count, loff_t *offset)
 353 {
 354         struct drm_file *file_priv = filp->private_data;
 355         struct vmw_private *dev_priv =
 356                 vmw_priv(file_priv->minor->dev);
 357
 358         vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
 359         return drm_read(filp, buffer, count, offset);
 360 }