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 struct svga_3d_compat_cap { 33 SVGA3dCapsRecordHeader header; 34 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX]; 35 }; 36 37 int vmw_getparam_ioctl(struct drm_device *dev, void *data, 38 struct drm_file *file_priv) 39 { 40 struct vmw_private *dev_priv = vmw_priv(dev); 41 struct drm_vmw_getparam_arg *param = 42 (struct drm_vmw_getparam_arg *)data; 43 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 44 45 switch (param->param) { 46 case DRM_VMW_PARAM_NUM_STREAMS: 47 param->value = vmw_overlay_num_overlays(dev_priv); 48 break; 49 case DRM_VMW_PARAM_NUM_FREE_STREAMS: 50 param->value = vmw_overlay_num_free_overlays(dev_priv); 51 break; 52 case DRM_VMW_PARAM_3D: 53 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0; 54 break; 55 case DRM_VMW_PARAM_HW_CAPS: 56 param->value = dev_priv->capabilities; 57 break; 58 case DRM_VMW_PARAM_FIFO_CAPS: 59 param->value = dev_priv->fifo.capabilities; 60 break; 61 case DRM_VMW_PARAM_MAX_FB_SIZE: 62 param->value = dev_priv->prim_bb_mem; 63 break; 64 case DRM_VMW_PARAM_FIFO_HW_VERSION: 65 { 66 __le32 __iomem *fifo_mem = dev_priv->mmio_virt; 67 const struct vmw_fifo_state *fifo = &dev_priv->fifo; 68 69 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) { 70 param->value = SVGA3D_HWVERSION_WS8_B1; 71 break; 72 } 73 74 param->value = 75 ioread32(fifo_mem + 76 ((fifo->capabilities & 77 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ? 78 SVGA_FIFO_3D_HWVERSION_REVISED : 79 SVGA_FIFO_3D_HWVERSION)); 80 break; 81 } 82 case DRM_VMW_PARAM_MAX_SURF_MEMORY: 83 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 84 !vmw_fp->gb_aware) 85 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2; 86 else 87 param->value = dev_priv->memory_size; 88 break; 89 case DRM_VMW_PARAM_3D_CAPS_SIZE: 90 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 91 vmw_fp->gb_aware) 92 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 93 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) 94 param->value = sizeof(struct svga_3d_compat_cap) + 95 sizeof(uint32_t); 96 else 97 param->value = (SVGA_FIFO_3D_CAPS_LAST - 98 SVGA_FIFO_3D_CAPS + 1) * 99 sizeof(uint32_t); 100 break; 101 case DRM_VMW_PARAM_MAX_MOB_MEMORY: 102 vmw_fp->gb_aware = true; 103 param->value = dev_priv->max_mob_pages * PAGE_SIZE; 104 break; 105 case DRM_VMW_PARAM_MAX_MOB_SIZE: 106 param->value = dev_priv->max_mob_size; 107 break; 108 default: 109 DRM_ERROR("Illegal vmwgfx get param request: %d\n", 110 param->param); 111 return -EINVAL; 112 } 113 114 return 0; 115 } 116 117 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce, 118 size_t size) 119 { 120 struct svga_3d_compat_cap *compat_cap = 121 (struct svga_3d_compat_cap *) bounce; 122 unsigned int i; 123 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs); 124 unsigned int max_size; 125 126 if (size < pair_offset) 127 return -EINVAL; 128 129 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair); 130 131 if (max_size > SVGA3D_DEVCAP_MAX) 132 max_size = SVGA3D_DEVCAP_MAX; 133 134 compat_cap->header.length = 135 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32); 136 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS; 137 138 mutex_lock(&dev_priv->hw_mutex); 139 for (i = 0; i < max_size; ++i) { 140 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 141 compat_cap->pairs[i][0] = i; 142 compat_cap->pairs[i][1] = vmw_read(dev_priv, SVGA_REG_DEV_CAP); 143 } 144 mutex_unlock(&dev_priv->hw_mutex); 145 146 return 0; 147 } 148 149 150 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 151 struct drm_file *file_priv) 152 { 153 struct drm_vmw_get_3d_cap_arg *arg = 154 (struct drm_vmw_get_3d_cap_arg *) data; 155 struct vmw_private *dev_priv = vmw_priv(dev); 156 uint32_t size; 157 __le32 __iomem *fifo_mem; 158 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 159 void *bounce; 160 int ret; 161 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); 162 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 163 164 if (unlikely(arg->pad64 != 0)) { 165 DRM_ERROR("Illegal GET_3D_CAP argument.\n"); 166 return -EINVAL; 167 } 168 169 if (gb_objects && vmw_fp->gb_aware) 170 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 171 else if (gb_objects) 172 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t); 173 else 174 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) * 175 sizeof(uint32_t); 176 177 if (arg->max_size < size) 178 size = arg->max_size; 179 180 bounce = vzalloc(size); 181 if (unlikely(bounce == NULL)) { 182 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 183 return -ENOMEM; 184 } 185 186 if (gb_objects && vmw_fp->gb_aware) { 187 int i, num; 188 uint32_t *bounce32 = (uint32_t *) bounce; 189 190 num = size / sizeof(uint32_t); 191 if (num > SVGA3D_DEVCAP_MAX) 192 num = SVGA3D_DEVCAP_MAX; 193 194 mutex_lock(&dev_priv->hw_mutex); 195 for (i = 0; i < num; ++i) { 196 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 197 *bounce32++ = vmw_read(dev_priv, SVGA_REG_DEV_CAP); 198 } 199 mutex_unlock(&dev_priv->hw_mutex); 200 } else if (gb_objects) { 201 ret = vmw_fill_compat_cap(dev_priv, bounce, size); 202 if (unlikely(ret != 0)) 203 goto out_err; 204 } else { 205 fifo_mem = dev_priv->mmio_virt; 206 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 207 } 208 209 ret = copy_to_user(buffer, bounce, size); 210 if (ret) 211 ret = -EFAULT; 212 out_err: 213 vfree(bounce); 214 215 if (unlikely(ret != 0)) 216 DRM_ERROR("Failed to report 3D caps info.\n"); 217 218 return ret; 219 } 220 221 int vmw_present_ioctl(struct drm_device *dev, void *data, 222 struct drm_file *file_priv) 223 { 224 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 225 struct vmw_private *dev_priv = vmw_priv(dev); 226 struct drm_vmw_present_arg *arg = 227 (struct drm_vmw_present_arg *)data; 228 struct vmw_surface *surface; 229 struct drm_vmw_rect __user *clips_ptr; 230 struct drm_vmw_rect *clips = NULL; 231 struct drm_framebuffer *fb; 232 struct vmw_framebuffer *vfb; 233 struct vmw_resource *res; 234 uint32_t num_clips; 235 int ret; 236 237 num_clips = arg->num_clips; 238 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 239 240 if (unlikely(num_clips == 0)) 241 return 0; 242 243 if (clips_ptr == NULL) { 244 DRM_ERROR("Variable clips_ptr must be specified.\n"); 245 ret = -EINVAL; 246 goto out_clips; 247 } 248 249 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 250 if (clips == NULL) { 251 DRM_ERROR("Failed to allocate clip rect list.\n"); 252 ret = -ENOMEM; 253 goto out_clips; 254 } 255 256 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 257 if (ret) { 258 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 259 ret = -EFAULT; 260 goto out_no_copy; 261 } 262 263 drm_modeset_lock_all(dev); 264 265 fb = drm_framebuffer_lookup(dev, arg->fb_id); 266 if (!fb) { 267 DRM_ERROR("Invalid framebuffer id.\n"); 268 ret = -ENOENT; 269 goto out_no_fb; 270 } 271 vfb = vmw_framebuffer_to_vfb(fb); 272 273 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 274 if (unlikely(ret != 0)) 275 goto out_no_ttm_lock; 276 277 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 278 user_surface_converter, 279 &res); 280 if (ret) 281 goto out_no_surface; 282 283 surface = vmw_res_to_srf(res); 284 ret = vmw_kms_present(dev_priv, file_priv, 285 vfb, surface, arg->sid, 286 arg->dest_x, arg->dest_y, 287 clips, num_clips); 288 289 /* vmw_user_surface_lookup takes one ref so does new_fb */ 290 vmw_surface_unreference(&surface); 291 292 out_no_surface: 293 ttm_read_unlock(&dev_priv->reservation_sem); 294 out_no_ttm_lock: 295 drm_framebuffer_unreference(fb); 296 out_no_fb: 297 drm_modeset_unlock_all(dev); 298 out_no_copy: 299 kfree(clips); 300 out_clips: 301 return ret; 302 } 303 304 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 305 struct drm_file *file_priv) 306 { 307 struct vmw_private *dev_priv = vmw_priv(dev); 308 struct drm_vmw_present_readback_arg *arg = 309 (struct drm_vmw_present_readback_arg *)data; 310 struct drm_vmw_fence_rep __user *user_fence_rep = 311 (struct drm_vmw_fence_rep __user *) 312 (unsigned long)arg->fence_rep; 313 struct drm_vmw_rect __user *clips_ptr; 314 struct drm_vmw_rect *clips = NULL; 315 struct drm_framebuffer *fb; 316 struct vmw_framebuffer *vfb; 317 uint32_t num_clips; 318 int ret; 319 320 num_clips = arg->num_clips; 321 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 322 323 if (unlikely(num_clips == 0)) 324 return 0; 325 326 if (clips_ptr == NULL) { 327 DRM_ERROR("Argument clips_ptr must be specified.\n"); 328 ret = -EINVAL; 329 goto out_clips; 330 } 331 332 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 333 if (clips == NULL) { 334 DRM_ERROR("Failed to allocate clip rect list.\n"); 335 ret = -ENOMEM; 336 goto out_clips; 337 } 338 339 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 340 if (ret) { 341 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 342 ret = -EFAULT; 343 goto out_no_copy; 344 } 345 346 drm_modeset_lock_all(dev); 347 348 fb = drm_framebuffer_lookup(dev, arg->fb_id); 349 if (!fb) { 350 DRM_ERROR("Invalid framebuffer id.\n"); 351 ret = -ENOENT; 352 goto out_no_fb; 353 } 354 355 vfb = vmw_framebuffer_to_vfb(fb); 356 if (!vfb->dmabuf) { 357 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 358 ret = -EINVAL; 359 goto out_no_ttm_lock; 360 } 361 362 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 363 if (unlikely(ret != 0)) 364 goto out_no_ttm_lock; 365 366 ret = vmw_kms_readback(dev_priv, file_priv, 367 vfb, user_fence_rep, 368 clips, num_clips); 369 370 ttm_read_unlock(&dev_priv->reservation_sem); 371 out_no_ttm_lock: 372 drm_framebuffer_unreference(fb); 373 out_no_fb: 374 drm_modeset_unlock_all(dev); 375 out_no_copy: 376 kfree(clips); 377 out_clips: 378 return ret; 379 } 380 381 382 /** 383 * vmw_fops_poll - wrapper around the drm_poll function 384 * 385 * @filp: See the linux fops poll documentation. 386 * @wait: See the linux fops poll documentation. 387 * 388 * Wrapper around the drm_poll function that makes sure the device is 389 * processing the fifo if drm_poll decides to wait. 390 */ 391 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 392 { 393 struct drm_file *file_priv = filp->private_data; 394 struct vmw_private *dev_priv = 395 vmw_priv(file_priv->minor->dev); 396 397 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 398 return drm_poll(filp, wait); 399 } 400 401 402 /** 403 * vmw_fops_read - wrapper around the drm_read function 404 * 405 * @filp: See the linux fops read documentation. 406 * @buffer: See the linux fops read documentation. 407 * @count: See the linux fops read documentation. 408 * offset: See the linux fops read documentation. 409 * 410 * Wrapper around the drm_read function that makes sure the device is 411 * processing the fifo if drm_read decides to wait. 412 */ 413 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 414 size_t count, loff_t *offset) 415 { 416 struct drm_file *file_priv = filp->private_data; 417 struct vmw_private *dev_priv = 418 vmw_priv(file_priv->minor->dev); 419 420 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 421 return drm_read(filp, buffer, count, offset); 422 } 423