1 /************************************************************************** 2 * 3 * Copyright © 2009-2015 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 #include "device_include/svga3d_caps.h" 32 33 struct svga_3d_compat_cap { 34 SVGA3dCapsRecordHeader header; 35 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX]; 36 }; 37 38 int vmw_getparam_ioctl(struct drm_device *dev, void *data, 39 struct drm_file *file_priv) 40 { 41 struct vmw_private *dev_priv = vmw_priv(dev); 42 struct drm_vmw_getparam_arg *param = 43 (struct drm_vmw_getparam_arg *)data; 44 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 45 46 switch (param->param) { 47 case DRM_VMW_PARAM_NUM_STREAMS: 48 param->value = vmw_overlay_num_overlays(dev_priv); 49 break; 50 case DRM_VMW_PARAM_NUM_FREE_STREAMS: 51 param->value = vmw_overlay_num_free_overlays(dev_priv); 52 break; 53 case DRM_VMW_PARAM_3D: 54 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0; 55 break; 56 case DRM_VMW_PARAM_HW_CAPS: 57 param->value = dev_priv->capabilities; 58 break; 59 case DRM_VMW_PARAM_FIFO_CAPS: 60 param->value = dev_priv->fifo.capabilities; 61 break; 62 case DRM_VMW_PARAM_MAX_FB_SIZE: 63 param->value = dev_priv->prim_bb_mem; 64 break; 65 case DRM_VMW_PARAM_FIFO_HW_VERSION: 66 { 67 u32 *fifo_mem = dev_priv->mmio_virt; 68 const struct vmw_fifo_state *fifo = &dev_priv->fifo; 69 70 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) { 71 param->value = SVGA3D_HWVERSION_WS8_B1; 72 break; 73 } 74 75 param->value = 76 vmw_mmio_read(fifo_mem + 77 ((fifo->capabilities & 78 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ? 79 SVGA_FIFO_3D_HWVERSION_REVISED : 80 SVGA_FIFO_3D_HWVERSION)); 81 break; 82 } 83 case DRM_VMW_PARAM_MAX_SURF_MEMORY: 84 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 85 !vmw_fp->gb_aware) 86 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2; 87 else 88 param->value = dev_priv->memory_size; 89 break; 90 case DRM_VMW_PARAM_3D_CAPS_SIZE: 91 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 92 vmw_fp->gb_aware) 93 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 94 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) 95 param->value = sizeof(struct svga_3d_compat_cap) + 96 sizeof(uint32_t); 97 else 98 param->value = (SVGA_FIFO_3D_CAPS_LAST - 99 SVGA_FIFO_3D_CAPS + 1) * 100 sizeof(uint32_t); 101 break; 102 case DRM_VMW_PARAM_MAX_MOB_MEMORY: 103 vmw_fp->gb_aware = true; 104 param->value = dev_priv->max_mob_pages * PAGE_SIZE; 105 break; 106 case DRM_VMW_PARAM_MAX_MOB_SIZE: 107 param->value = dev_priv->max_mob_size; 108 break; 109 case DRM_VMW_PARAM_SCREEN_TARGET: 110 param->value = 111 (dev_priv->active_display_unit == vmw_du_screen_target); 112 break; 113 case DRM_VMW_PARAM_DX: 114 param->value = dev_priv->has_dx; 115 break; 116 default: 117 return -EINVAL; 118 } 119 120 return 0; 121 } 122 123 static u32 vmw_mask_multisample(unsigned int cap, u32 fmt_value) 124 { 125 /* If the header is updated, update the format test as well! */ 126 BUILD_BUG_ON(SVGA3D_DEVCAP_DXFMT_BC5_UNORM + 1 != SVGA3D_DEVCAP_MAX); 127 128 if (cap >= SVGA3D_DEVCAP_DXFMT_X8R8G8B8 && 129 cap <= SVGA3D_DEVCAP_DXFMT_BC5_UNORM) 130 fmt_value &= ~(SVGADX_DXFMT_MULTISAMPLE_2 | 131 SVGADX_DXFMT_MULTISAMPLE_4 | 132 SVGADX_DXFMT_MULTISAMPLE_8); 133 else if (cap == SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES) 134 return 0; 135 136 return fmt_value; 137 } 138 139 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce, 140 size_t size) 141 { 142 struct svga_3d_compat_cap *compat_cap = 143 (struct svga_3d_compat_cap *) bounce; 144 unsigned int i; 145 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs); 146 unsigned int max_size; 147 148 if (size < pair_offset) 149 return -EINVAL; 150 151 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair); 152 153 if (max_size > SVGA3D_DEVCAP_MAX) 154 max_size = SVGA3D_DEVCAP_MAX; 155 156 compat_cap->header.length = 157 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32); 158 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS; 159 160 spin_lock(&dev_priv->cap_lock); 161 for (i = 0; i < max_size; ++i) { 162 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 163 compat_cap->pairs[i][0] = i; 164 compat_cap->pairs[i][1] = vmw_mask_multisample 165 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 166 } 167 spin_unlock(&dev_priv->cap_lock); 168 169 return 0; 170 } 171 172 173 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 174 struct drm_file *file_priv) 175 { 176 struct drm_vmw_get_3d_cap_arg *arg = 177 (struct drm_vmw_get_3d_cap_arg *) data; 178 struct vmw_private *dev_priv = vmw_priv(dev); 179 uint32_t size; 180 u32 *fifo_mem; 181 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 182 void *bounce; 183 int ret; 184 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); 185 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 186 187 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) { 188 DRM_ERROR("Illegal GET_3D_CAP argument.\n"); 189 return -EINVAL; 190 } 191 192 if (gb_objects && vmw_fp->gb_aware) 193 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 194 else if (gb_objects) 195 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t); 196 else 197 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) * 198 sizeof(uint32_t); 199 200 if (arg->max_size < size) 201 size = arg->max_size; 202 203 bounce = vzalloc(size); 204 if (unlikely(bounce == NULL)) { 205 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 206 return -ENOMEM; 207 } 208 209 if (gb_objects && vmw_fp->gb_aware) { 210 int i, num; 211 uint32_t *bounce32 = (uint32_t *) bounce; 212 213 num = size / sizeof(uint32_t); 214 if (num > SVGA3D_DEVCAP_MAX) 215 num = SVGA3D_DEVCAP_MAX; 216 217 spin_lock(&dev_priv->cap_lock); 218 for (i = 0; i < num; ++i) { 219 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 220 *bounce32++ = vmw_mask_multisample 221 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 222 } 223 spin_unlock(&dev_priv->cap_lock); 224 } else if (gb_objects) { 225 ret = vmw_fill_compat_cap(dev_priv, bounce, size); 226 if (unlikely(ret != 0)) 227 goto out_err; 228 } else { 229 fifo_mem = dev_priv->mmio_virt; 230 memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 231 } 232 233 ret = copy_to_user(buffer, bounce, size); 234 if (ret) 235 ret = -EFAULT; 236 out_err: 237 vfree(bounce); 238 239 if (unlikely(ret != 0)) 240 DRM_ERROR("Failed to report 3D caps info.\n"); 241 242 return ret; 243 } 244 245 int vmw_present_ioctl(struct drm_device *dev, void *data, 246 struct drm_file *file_priv) 247 { 248 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 249 struct vmw_private *dev_priv = vmw_priv(dev); 250 struct drm_vmw_present_arg *arg = 251 (struct drm_vmw_present_arg *)data; 252 struct vmw_surface *surface; 253 struct drm_vmw_rect __user *clips_ptr; 254 struct drm_vmw_rect *clips = NULL; 255 struct drm_framebuffer *fb; 256 struct vmw_framebuffer *vfb; 257 struct vmw_resource *res; 258 uint32_t num_clips; 259 int ret; 260 261 num_clips = arg->num_clips; 262 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 263 264 if (unlikely(num_clips == 0)) 265 return 0; 266 267 if (clips_ptr == NULL) { 268 DRM_ERROR("Variable clips_ptr must be specified.\n"); 269 ret = -EINVAL; 270 goto out_clips; 271 } 272 273 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 274 if (clips == NULL) { 275 DRM_ERROR("Failed to allocate clip rect list.\n"); 276 ret = -ENOMEM; 277 goto out_clips; 278 } 279 280 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 281 if (ret) { 282 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 283 ret = -EFAULT; 284 goto out_no_copy; 285 } 286 287 drm_modeset_lock_all(dev); 288 289 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id); 290 if (!fb) { 291 DRM_ERROR("Invalid framebuffer id.\n"); 292 ret = -ENOENT; 293 goto out_no_fb; 294 } 295 vfb = vmw_framebuffer_to_vfb(fb); 296 297 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 298 if (unlikely(ret != 0)) 299 goto out_no_ttm_lock; 300 301 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 302 user_surface_converter, 303 &res); 304 if (ret) 305 goto out_no_surface; 306 307 surface = vmw_res_to_srf(res); 308 ret = vmw_kms_present(dev_priv, file_priv, 309 vfb, surface, arg->sid, 310 arg->dest_x, arg->dest_y, 311 clips, num_clips); 312 313 /* vmw_user_surface_lookup takes one ref so does new_fb */ 314 vmw_surface_unreference(&surface); 315 316 out_no_surface: 317 ttm_read_unlock(&dev_priv->reservation_sem); 318 out_no_ttm_lock: 319 drm_framebuffer_unreference(fb); 320 out_no_fb: 321 drm_modeset_unlock_all(dev); 322 out_no_copy: 323 kfree(clips); 324 out_clips: 325 return ret; 326 } 327 328 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 329 struct drm_file *file_priv) 330 { 331 struct vmw_private *dev_priv = vmw_priv(dev); 332 struct drm_vmw_present_readback_arg *arg = 333 (struct drm_vmw_present_readback_arg *)data; 334 struct drm_vmw_fence_rep __user *user_fence_rep = 335 (struct drm_vmw_fence_rep __user *) 336 (unsigned long)arg->fence_rep; 337 struct drm_vmw_rect __user *clips_ptr; 338 struct drm_vmw_rect *clips = NULL; 339 struct drm_framebuffer *fb; 340 struct vmw_framebuffer *vfb; 341 uint32_t num_clips; 342 int ret; 343 344 num_clips = arg->num_clips; 345 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 346 347 if (unlikely(num_clips == 0)) 348 return 0; 349 350 if (clips_ptr == NULL) { 351 DRM_ERROR("Argument clips_ptr must be specified.\n"); 352 ret = -EINVAL; 353 goto out_clips; 354 } 355 356 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 357 if (clips == NULL) { 358 DRM_ERROR("Failed to allocate clip rect list.\n"); 359 ret = -ENOMEM; 360 goto out_clips; 361 } 362 363 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 364 if (ret) { 365 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 366 ret = -EFAULT; 367 goto out_no_copy; 368 } 369 370 drm_modeset_lock_all(dev); 371 372 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id); 373 if (!fb) { 374 DRM_ERROR("Invalid framebuffer id.\n"); 375 ret = -ENOENT; 376 goto out_no_fb; 377 } 378 379 vfb = vmw_framebuffer_to_vfb(fb); 380 if (!vfb->dmabuf) { 381 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 382 ret = -EINVAL; 383 goto out_no_ttm_lock; 384 } 385 386 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 387 if (unlikely(ret != 0)) 388 goto out_no_ttm_lock; 389 390 ret = vmw_kms_readback(dev_priv, file_priv, 391 vfb, user_fence_rep, 392 clips, num_clips); 393 394 ttm_read_unlock(&dev_priv->reservation_sem); 395 out_no_ttm_lock: 396 drm_framebuffer_unreference(fb); 397 out_no_fb: 398 drm_modeset_unlock_all(dev); 399 out_no_copy: 400 kfree(clips); 401 out_clips: 402 return ret; 403 } 404 405 406 /** 407 * vmw_fops_poll - wrapper around the drm_poll function 408 * 409 * @filp: See the linux fops poll documentation. 410 * @wait: See the linux fops poll documentation. 411 * 412 * Wrapper around the drm_poll function that makes sure the device is 413 * processing the fifo if drm_poll decides to wait. 414 */ 415 __poll_t vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 416 { 417 struct drm_file *file_priv = filp->private_data; 418 struct vmw_private *dev_priv = 419 vmw_priv(file_priv->minor->dev); 420 421 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 422 return drm_poll(filp, wait); 423 } 424 425 426 /** 427 * vmw_fops_read - wrapper around the drm_read function 428 * 429 * @filp: See the linux fops read documentation. 430 * @buffer: See the linux fops read documentation. 431 * @count: See the linux fops read documentation. 432 * offset: See the linux fops read documentation. 433 * 434 * Wrapper around the drm_read function that makes sure the device is 435 * processing the fifo if drm_read decides to wait. 436 */ 437 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 438 size_t count, loff_t *offset) 439 { 440 struct drm_file *file_priv = filp->private_data; 441 struct vmw_private *dev_priv = 442 vmw_priv(file_priv->minor->dev); 443 444 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 445 return drm_read(filp, buffer, count, offset); 446 } 447