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 <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_HW_CAPS2: 60 param->value = dev_priv->capabilities2; 61 break; 62 case DRM_VMW_PARAM_FIFO_CAPS: 63 param->value = dev_priv->fifo.capabilities; 64 break; 65 case DRM_VMW_PARAM_MAX_FB_SIZE: 66 param->value = dev_priv->prim_bb_mem; 67 break; 68 case DRM_VMW_PARAM_FIFO_HW_VERSION: 69 { 70 u32 *fifo_mem = dev_priv->mmio_virt; 71 const struct vmw_fifo_state *fifo = &dev_priv->fifo; 72 73 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) { 74 param->value = SVGA3D_HWVERSION_WS8_B1; 75 break; 76 } 77 78 param->value = 79 vmw_mmio_read(fifo_mem + 80 ((fifo->capabilities & 81 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ? 82 SVGA_FIFO_3D_HWVERSION_REVISED : 83 SVGA_FIFO_3D_HWVERSION)); 84 break; 85 } 86 case DRM_VMW_PARAM_MAX_SURF_MEMORY: 87 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 88 !vmw_fp->gb_aware) 89 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2; 90 else 91 param->value = dev_priv->memory_size; 92 break; 93 case DRM_VMW_PARAM_3D_CAPS_SIZE: 94 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 95 vmw_fp->gb_aware) 96 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 97 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) 98 param->value = sizeof(struct svga_3d_compat_cap) + 99 sizeof(uint32_t); 100 else 101 param->value = (SVGA_FIFO_3D_CAPS_LAST - 102 SVGA_FIFO_3D_CAPS + 1) * 103 sizeof(uint32_t); 104 break; 105 case DRM_VMW_PARAM_MAX_MOB_MEMORY: 106 vmw_fp->gb_aware = true; 107 param->value = dev_priv->max_mob_pages * PAGE_SIZE; 108 break; 109 case DRM_VMW_PARAM_MAX_MOB_SIZE: 110 param->value = dev_priv->max_mob_size; 111 break; 112 case DRM_VMW_PARAM_SCREEN_TARGET: 113 param->value = 114 (dev_priv->active_display_unit == vmw_du_screen_target); 115 break; 116 case DRM_VMW_PARAM_DX: 117 param->value = dev_priv->has_dx; 118 break; 119 case DRM_VMW_PARAM_SM4_1: 120 param->value = dev_priv->has_sm4_1; 121 break; 122 default: 123 return -EINVAL; 124 } 125 126 return 0; 127 } 128 129 static u32 vmw_mask_multisample(unsigned int cap, u32 fmt_value) 130 { 131 /* 132 * A version of user-space exists which use MULTISAMPLE_MASKABLESAMPLES 133 * to check the sample count supported by virtual device. Since there 134 * never was support for multisample count for backing MOB return 0. 135 */ 136 if (cap == SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES) 137 return 0; 138 139 return fmt_value; 140 } 141 142 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce, 143 size_t size) 144 { 145 struct svga_3d_compat_cap *compat_cap = 146 (struct svga_3d_compat_cap *) bounce; 147 unsigned int i; 148 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs); 149 unsigned int max_size; 150 151 if (size < pair_offset) 152 return -EINVAL; 153 154 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair); 155 156 if (max_size > SVGA3D_DEVCAP_MAX) 157 max_size = SVGA3D_DEVCAP_MAX; 158 159 compat_cap->header.length = 160 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32); 161 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS; 162 163 spin_lock(&dev_priv->cap_lock); 164 for (i = 0; i < max_size; ++i) { 165 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 166 compat_cap->pairs[i][0] = i; 167 compat_cap->pairs[i][1] = vmw_mask_multisample 168 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 169 } 170 spin_unlock(&dev_priv->cap_lock); 171 172 return 0; 173 } 174 175 176 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 177 struct drm_file *file_priv) 178 { 179 struct drm_vmw_get_3d_cap_arg *arg = 180 (struct drm_vmw_get_3d_cap_arg *) data; 181 struct vmw_private *dev_priv = vmw_priv(dev); 182 uint32_t size; 183 u32 *fifo_mem; 184 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 185 void *bounce; 186 int ret; 187 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); 188 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 189 190 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) { 191 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n"); 192 return -EINVAL; 193 } 194 195 if (gb_objects && vmw_fp->gb_aware) 196 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 197 else if (gb_objects) 198 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t); 199 else 200 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) * 201 sizeof(uint32_t); 202 203 if (arg->max_size < size) 204 size = arg->max_size; 205 206 bounce = vzalloc(size); 207 if (unlikely(bounce == NULL)) { 208 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 209 return -ENOMEM; 210 } 211 212 if (gb_objects && vmw_fp->gb_aware) { 213 int i, num; 214 uint32_t *bounce32 = (uint32_t *) bounce; 215 216 num = size / sizeof(uint32_t); 217 if (num > SVGA3D_DEVCAP_MAX) 218 num = SVGA3D_DEVCAP_MAX; 219 220 spin_lock(&dev_priv->cap_lock); 221 for (i = 0; i < num; ++i) { 222 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 223 *bounce32++ = vmw_mask_multisample 224 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 225 } 226 spin_unlock(&dev_priv->cap_lock); 227 } else if (gb_objects) { 228 ret = vmw_fill_compat_cap(dev_priv, bounce, size); 229 if (unlikely(ret != 0)) 230 goto out_err; 231 } else { 232 fifo_mem = dev_priv->mmio_virt; 233 memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 234 } 235 236 ret = copy_to_user(buffer, bounce, size); 237 if (ret) 238 ret = -EFAULT; 239 out_err: 240 vfree(bounce); 241 242 if (unlikely(ret != 0)) 243 DRM_ERROR("Failed to report 3D caps info.\n"); 244 245 return ret; 246 } 247 248 int vmw_present_ioctl(struct drm_device *dev, void *data, 249 struct drm_file *file_priv) 250 { 251 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 252 struct vmw_private *dev_priv = vmw_priv(dev); 253 struct drm_vmw_present_arg *arg = 254 (struct drm_vmw_present_arg *)data; 255 struct vmw_surface *surface; 256 struct drm_vmw_rect __user *clips_ptr; 257 struct drm_vmw_rect *clips = NULL; 258 struct drm_framebuffer *fb; 259 struct vmw_framebuffer *vfb; 260 struct vmw_resource *res; 261 uint32_t num_clips; 262 int ret; 263 264 num_clips = arg->num_clips; 265 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 266 267 if (unlikely(num_clips == 0)) 268 return 0; 269 270 if (clips_ptr == NULL) { 271 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n"); 272 ret = -EINVAL; 273 goto out_clips; 274 } 275 276 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 277 if (clips == NULL) { 278 DRM_ERROR("Failed to allocate clip rect list.\n"); 279 ret = -ENOMEM; 280 goto out_clips; 281 } 282 283 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 284 if (ret) { 285 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 286 ret = -EFAULT; 287 goto out_no_copy; 288 } 289 290 drm_modeset_lock_all(dev); 291 292 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id); 293 if (!fb) { 294 VMW_DEBUG_USER("Invalid framebuffer id.\n"); 295 ret = -ENOENT; 296 goto out_no_fb; 297 } 298 vfb = vmw_framebuffer_to_vfb(fb); 299 300 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 301 if (unlikely(ret != 0)) 302 goto out_no_ttm_lock; 303 304 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 305 user_surface_converter, 306 &res); 307 if (ret) 308 goto out_no_surface; 309 310 surface = vmw_res_to_srf(res); 311 ret = vmw_kms_present(dev_priv, file_priv, 312 vfb, surface, arg->sid, 313 arg->dest_x, arg->dest_y, 314 clips, num_clips); 315 316 /* vmw_user_surface_lookup takes one ref so does new_fb */ 317 vmw_surface_unreference(&surface); 318 319 out_no_surface: 320 ttm_read_unlock(&dev_priv->reservation_sem); 321 out_no_ttm_lock: 322 drm_framebuffer_put(fb); 323 out_no_fb: 324 drm_modeset_unlock_all(dev); 325 out_no_copy: 326 kfree(clips); 327 out_clips: 328 return ret; 329 } 330 331 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 332 struct drm_file *file_priv) 333 { 334 struct vmw_private *dev_priv = vmw_priv(dev); 335 struct drm_vmw_present_readback_arg *arg = 336 (struct drm_vmw_present_readback_arg *)data; 337 struct drm_vmw_fence_rep __user *user_fence_rep = 338 (struct drm_vmw_fence_rep __user *) 339 (unsigned long)arg->fence_rep; 340 struct drm_vmw_rect __user *clips_ptr; 341 struct drm_vmw_rect *clips = NULL; 342 struct drm_framebuffer *fb; 343 struct vmw_framebuffer *vfb; 344 uint32_t num_clips; 345 int ret; 346 347 num_clips = arg->num_clips; 348 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 349 350 if (unlikely(num_clips == 0)) 351 return 0; 352 353 if (clips_ptr == NULL) { 354 VMW_DEBUG_USER("Argument clips_ptr must be specified.\n"); 355 ret = -EINVAL; 356 goto out_clips; 357 } 358 359 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 360 if (clips == NULL) { 361 DRM_ERROR("Failed to allocate clip rect list.\n"); 362 ret = -ENOMEM; 363 goto out_clips; 364 } 365 366 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 367 if (ret) { 368 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 369 ret = -EFAULT; 370 goto out_no_copy; 371 } 372 373 drm_modeset_lock_all(dev); 374 375 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id); 376 if (!fb) { 377 VMW_DEBUG_USER("Invalid framebuffer id.\n"); 378 ret = -ENOENT; 379 goto out_no_fb; 380 } 381 382 vfb = vmw_framebuffer_to_vfb(fb); 383 if (!vfb->bo) { 384 VMW_DEBUG_USER("Framebuffer not buffer backed.\n"); 385 ret = -EINVAL; 386 goto out_no_ttm_lock; 387 } 388 389 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 390 if (unlikely(ret != 0)) 391 goto out_no_ttm_lock; 392 393 ret = vmw_kms_readback(dev_priv, file_priv, 394 vfb, user_fence_rep, 395 clips, num_clips); 396 397 ttm_read_unlock(&dev_priv->reservation_sem); 398 out_no_ttm_lock: 399 drm_framebuffer_put(fb); 400 out_no_fb: 401 drm_modeset_unlock_all(dev); 402 out_no_copy: 403 kfree(clips); 404 out_clips: 405 return ret; 406 } 407 408 409 /** 410 * vmw_fops_poll - wrapper around the drm_poll function 411 * 412 * @filp: See the linux fops poll documentation. 413 * @wait: See the linux fops poll documentation. 414 * 415 * Wrapper around the drm_poll function that makes sure the device is 416 * processing the fifo if drm_poll decides to wait. 417 */ 418 __poll_t vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 419 { 420 struct drm_file *file_priv = filp->private_data; 421 struct vmw_private *dev_priv = 422 vmw_priv(file_priv->minor->dev); 423 424 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 425 return drm_poll(filp, wait); 426 } 427 428 429 /** 430 * vmw_fops_read - wrapper around the drm_read function 431 * 432 * @filp: See the linux fops read documentation. 433 * @buffer: See the linux fops read documentation. 434 * @count: See the linux fops read documentation. 435 * offset: See the linux fops read documentation. 436 * 437 * Wrapper around the drm_read function that makes sure the device is 438 * processing the fifo if drm_read decides to wait. 439 */ 440 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 441 size_t count, loff_t *offset) 442 { 443 struct drm_file *file_priv = filp->private_data; 444 struct vmw_private *dev_priv = 445 vmw_priv(file_priv->minor->dev); 446 447 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 448 return drm_read(filp, buffer, count, offset); 449 } 450