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 __iomem *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 ioread32(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 DRM_ERROR("Illegal vmwgfx get param request: %d\n", 118 param->param); 119 return -EINVAL; 120 } 121 122 return 0; 123 } 124 125 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce, 126 size_t size) 127 { 128 struct svga_3d_compat_cap *compat_cap = 129 (struct svga_3d_compat_cap *) bounce; 130 unsigned int i; 131 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs); 132 unsigned int max_size; 133 134 if (size < pair_offset) 135 return -EINVAL; 136 137 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair); 138 139 if (max_size > SVGA3D_DEVCAP_MAX) 140 max_size = SVGA3D_DEVCAP_MAX; 141 142 compat_cap->header.length = 143 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32); 144 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS; 145 146 spin_lock(&dev_priv->cap_lock); 147 for (i = 0; i < max_size; ++i) { 148 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 149 compat_cap->pairs[i][0] = i; 150 compat_cap->pairs[i][1] = vmw_read(dev_priv, SVGA_REG_DEV_CAP); 151 } 152 spin_unlock(&dev_priv->cap_lock); 153 154 return 0; 155 } 156 157 158 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 159 struct drm_file *file_priv) 160 { 161 struct drm_vmw_get_3d_cap_arg *arg = 162 (struct drm_vmw_get_3d_cap_arg *) data; 163 struct vmw_private *dev_priv = vmw_priv(dev); 164 uint32_t size; 165 u32 __iomem *fifo_mem; 166 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 167 void *bounce; 168 int ret; 169 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); 170 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 171 172 if (unlikely(arg->pad64 != 0)) { 173 DRM_ERROR("Illegal GET_3D_CAP argument.\n"); 174 return -EINVAL; 175 } 176 177 if (gb_objects && vmw_fp->gb_aware) 178 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 179 else if (gb_objects) 180 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t); 181 else 182 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) * 183 sizeof(uint32_t); 184 185 if (arg->max_size < size) 186 size = arg->max_size; 187 188 bounce = vzalloc(size); 189 if (unlikely(bounce == NULL)) { 190 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 191 return -ENOMEM; 192 } 193 194 if (gb_objects && vmw_fp->gb_aware) { 195 int i, num; 196 uint32_t *bounce32 = (uint32_t *) bounce; 197 198 num = size / sizeof(uint32_t); 199 if (num > SVGA3D_DEVCAP_MAX) 200 num = SVGA3D_DEVCAP_MAX; 201 202 spin_lock(&dev_priv->cap_lock); 203 for (i = 0; i < num; ++i) { 204 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 205 *bounce32++ = vmw_read(dev_priv, SVGA_REG_DEV_CAP); 206 } 207 spin_unlock(&dev_priv->cap_lock); 208 } else if (gb_objects) { 209 ret = vmw_fill_compat_cap(dev_priv, bounce, size); 210 if (unlikely(ret != 0)) 211 goto out_err; 212 } else { 213 fifo_mem = dev_priv->mmio_virt; 214 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 215 } 216 217 ret = copy_to_user(buffer, bounce, size); 218 if (ret) 219 ret = -EFAULT; 220 out_err: 221 vfree(bounce); 222 223 if (unlikely(ret != 0)) 224 DRM_ERROR("Failed to report 3D caps info.\n"); 225 226 return ret; 227 } 228 229 int vmw_present_ioctl(struct drm_device *dev, void *data, 230 struct drm_file *file_priv) 231 { 232 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 233 struct vmw_private *dev_priv = vmw_priv(dev); 234 struct drm_vmw_present_arg *arg = 235 (struct drm_vmw_present_arg *)data; 236 struct vmw_surface *surface; 237 struct drm_vmw_rect __user *clips_ptr; 238 struct drm_vmw_rect *clips = NULL; 239 struct drm_framebuffer *fb; 240 struct vmw_framebuffer *vfb; 241 struct vmw_resource *res; 242 uint32_t num_clips; 243 int ret; 244 245 num_clips = arg->num_clips; 246 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 247 248 if (unlikely(num_clips == 0)) 249 return 0; 250 251 if (clips_ptr == NULL) { 252 DRM_ERROR("Variable clips_ptr must be specified.\n"); 253 ret = -EINVAL; 254 goto out_clips; 255 } 256 257 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 258 if (clips == NULL) { 259 DRM_ERROR("Failed to allocate clip rect list.\n"); 260 ret = -ENOMEM; 261 goto out_clips; 262 } 263 264 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 265 if (ret) { 266 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 267 ret = -EFAULT; 268 goto out_no_copy; 269 } 270 271 drm_modeset_lock_all(dev); 272 273 fb = drm_framebuffer_lookup(dev, arg->fb_id); 274 if (!fb) { 275 DRM_ERROR("Invalid framebuffer id.\n"); 276 ret = -ENOENT; 277 goto out_no_fb; 278 } 279 vfb = vmw_framebuffer_to_vfb(fb); 280 281 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 282 if (unlikely(ret != 0)) 283 goto out_no_ttm_lock; 284 285 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 286 user_surface_converter, 287 &res); 288 if (ret) 289 goto out_no_surface; 290 291 surface = vmw_res_to_srf(res); 292 ret = vmw_kms_present(dev_priv, file_priv, 293 vfb, surface, arg->sid, 294 arg->dest_x, arg->dest_y, 295 clips, num_clips); 296 297 /* vmw_user_surface_lookup takes one ref so does new_fb */ 298 vmw_surface_unreference(&surface); 299 300 out_no_surface: 301 ttm_read_unlock(&dev_priv->reservation_sem); 302 out_no_ttm_lock: 303 drm_framebuffer_unreference(fb); 304 out_no_fb: 305 drm_modeset_unlock_all(dev); 306 out_no_copy: 307 kfree(clips); 308 out_clips: 309 return ret; 310 } 311 312 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 313 struct drm_file *file_priv) 314 { 315 struct vmw_private *dev_priv = vmw_priv(dev); 316 struct drm_vmw_present_readback_arg *arg = 317 (struct drm_vmw_present_readback_arg *)data; 318 struct drm_vmw_fence_rep __user *user_fence_rep = 319 (struct drm_vmw_fence_rep __user *) 320 (unsigned long)arg->fence_rep; 321 struct drm_vmw_rect __user *clips_ptr; 322 struct drm_vmw_rect *clips = NULL; 323 struct drm_framebuffer *fb; 324 struct vmw_framebuffer *vfb; 325 uint32_t num_clips; 326 int ret; 327 328 num_clips = arg->num_clips; 329 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 330 331 if (unlikely(num_clips == 0)) 332 return 0; 333 334 if (clips_ptr == NULL) { 335 DRM_ERROR("Argument clips_ptr must be specified.\n"); 336 ret = -EINVAL; 337 goto out_clips; 338 } 339 340 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 341 if (clips == NULL) { 342 DRM_ERROR("Failed to allocate clip rect list.\n"); 343 ret = -ENOMEM; 344 goto out_clips; 345 } 346 347 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 348 if (ret) { 349 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 350 ret = -EFAULT; 351 goto out_no_copy; 352 } 353 354 drm_modeset_lock_all(dev); 355 356 fb = drm_framebuffer_lookup(dev, arg->fb_id); 357 if (!fb) { 358 DRM_ERROR("Invalid framebuffer id.\n"); 359 ret = -ENOENT; 360 goto out_no_fb; 361 } 362 363 vfb = vmw_framebuffer_to_vfb(fb); 364 if (!vfb->dmabuf) { 365 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 366 ret = -EINVAL; 367 goto out_no_ttm_lock; 368 } 369 370 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 371 if (unlikely(ret != 0)) 372 goto out_no_ttm_lock; 373 374 ret = vmw_kms_readback(dev_priv, file_priv, 375 vfb, user_fence_rep, 376 clips, num_clips); 377 378 ttm_read_unlock(&dev_priv->reservation_sem); 379 out_no_ttm_lock: 380 drm_framebuffer_unreference(fb); 381 out_no_fb: 382 drm_modeset_unlock_all(dev); 383 out_no_copy: 384 kfree(clips); 385 out_clips: 386 return ret; 387 } 388 389 390 /** 391 * vmw_fops_poll - wrapper around the drm_poll function 392 * 393 * @filp: See the linux fops poll documentation. 394 * @wait: See the linux fops poll documentation. 395 * 396 * Wrapper around the drm_poll function that makes sure the device is 397 * processing the fifo if drm_poll decides to wait. 398 */ 399 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 400 { 401 struct drm_file *file_priv = filp->private_data; 402 struct vmw_private *dev_priv = 403 vmw_priv(file_priv->minor->dev); 404 405 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 406 return drm_poll(filp, wait); 407 } 408 409 410 /** 411 * vmw_fops_read - wrapper around the drm_read function 412 * 413 * @filp: See the linux fops read documentation. 414 * @buffer: See the linux fops read documentation. 415 * @count: See the linux fops read documentation. 416 * offset: See the linux fops read documentation. 417 * 418 * Wrapper around the drm_read function that makes sure the device is 419 * processing the fifo if drm_read decides to wait. 420 */ 421 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 422 size_t count, loff_t *offset) 423 { 424 struct drm_file *file_priv = filp->private_data; 425 struct vmw_private *dev_priv = 426 vmw_priv(file_priv->minor->dev); 427 428 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 429 return drm_read(filp, buffer, count, offset); 430 } 431