1 /* $NetBSD: vmwgfx_ioctl.c,v 1.4 2022/10/25 23:35:43 riastradh Exp $ */ 2 3 // SPDX-License-Identifier: GPL-2.0 OR MIT 4 /************************************************************************** 5 * 6 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the 10 * "Software"), to deal in the Software without restriction, including 11 * without limitation the rights to use, copy, modify, merge, publish, 12 * distribute, sub license, and/or sell copies of the Software, and to 13 * permit persons to whom the Software is furnished to do so, subject to 14 * the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the 17 * next paragraph) shall be included in all copies or substantial portions 18 * of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 23 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 24 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 25 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 26 * USE OR OTHER DEALINGS IN THE SOFTWARE. 27 * 28 **************************************************************************/ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: vmwgfx_ioctl.c,v 1.4 2022/10/25 23:35:43 riastradh Exp $"); 32 33 #include "vmwgfx_drv.h" 34 #include <drm/vmwgfx_drm.h> 35 #include "vmwgfx_kms.h" 36 #include "device_include/svga3d_caps.h" 37 38 struct svga_3d_compat_cap { 39 SVGA3dCapsRecordHeader header; 40 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX]; 41 }; 42 43 int vmw_getparam_ioctl(struct drm_device *dev, void *data, 44 struct drm_file *file_priv) 45 { 46 struct vmw_private *dev_priv = vmw_priv(dev); 47 struct drm_vmw_getparam_arg *param = 48 (struct drm_vmw_getparam_arg *)data; 49 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 50 51 switch (param->param) { 52 case DRM_VMW_PARAM_NUM_STREAMS: 53 param->value = vmw_overlay_num_overlays(dev_priv); 54 break; 55 case DRM_VMW_PARAM_NUM_FREE_STREAMS: 56 param->value = vmw_overlay_num_free_overlays(dev_priv); 57 break; 58 case DRM_VMW_PARAM_3D: 59 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0; 60 break; 61 case DRM_VMW_PARAM_HW_CAPS: 62 param->value = dev_priv->capabilities; 63 break; 64 case DRM_VMW_PARAM_HW_CAPS2: 65 param->value = dev_priv->capabilities2; 66 break; 67 case DRM_VMW_PARAM_FIFO_CAPS: 68 param->value = dev_priv->fifo.capabilities; 69 break; 70 case DRM_VMW_PARAM_MAX_FB_SIZE: 71 param->value = dev_priv->prim_bb_mem; 72 break; 73 case DRM_VMW_PARAM_FIFO_HW_VERSION: 74 { 75 u32 *fifo_mem = dev_priv->mmio_virt; 76 const struct vmw_fifo_state *fifo = &dev_priv->fifo; 77 78 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) { 79 param->value = SVGA3D_HWVERSION_WS8_B1; 80 break; 81 } 82 83 param->value = 84 vmw_mmio_read(fifo_mem + 85 ((fifo->capabilities & 86 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ? 87 SVGA_FIFO_3D_HWVERSION_REVISED : 88 SVGA_FIFO_3D_HWVERSION)); 89 break; 90 } 91 case DRM_VMW_PARAM_MAX_SURF_MEMORY: 92 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 93 !vmw_fp->gb_aware) 94 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2; 95 else 96 param->value = dev_priv->memory_size; 97 break; 98 case DRM_VMW_PARAM_3D_CAPS_SIZE: 99 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 100 vmw_fp->gb_aware) 101 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 102 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) 103 param->value = sizeof(struct svga_3d_compat_cap) + 104 sizeof(uint32_t); 105 else 106 param->value = (SVGA_FIFO_3D_CAPS_LAST - 107 SVGA_FIFO_3D_CAPS + 1) * 108 sizeof(uint32_t); 109 break; 110 case DRM_VMW_PARAM_MAX_MOB_MEMORY: 111 vmw_fp->gb_aware = true; 112 param->value = dev_priv->max_mob_pages * PAGE_SIZE; 113 break; 114 case DRM_VMW_PARAM_MAX_MOB_SIZE: 115 param->value = dev_priv->max_mob_size; 116 break; 117 case DRM_VMW_PARAM_SCREEN_TARGET: 118 param->value = 119 (dev_priv->active_display_unit == vmw_du_screen_target); 120 break; 121 case DRM_VMW_PARAM_DX: 122 param->value = dev_priv->has_dx; 123 break; 124 case DRM_VMW_PARAM_SM4_1: 125 param->value = dev_priv->has_sm4_1; 126 break; 127 default: 128 return -EINVAL; 129 } 130 131 return 0; 132 } 133 134 static u32 vmw_mask_multisample(unsigned int cap, u32 fmt_value) 135 { 136 /* 137 * A version of user-space exists which use MULTISAMPLE_MASKABLESAMPLES 138 * to check the sample count supported by virtual device. Since there 139 * never was support for multisample count for backing MOB return 0. 140 */ 141 if (cap == SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES) 142 return 0; 143 144 return fmt_value; 145 } 146 147 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce, 148 size_t size) 149 { 150 struct svga_3d_compat_cap *compat_cap = 151 (struct svga_3d_compat_cap *) bounce; 152 unsigned int i; 153 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs); 154 unsigned int max_size; 155 156 if (size < pair_offset) 157 return -EINVAL; 158 159 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair); 160 161 if (max_size > SVGA3D_DEVCAP_MAX) 162 max_size = SVGA3D_DEVCAP_MAX; 163 164 compat_cap->header.length = 165 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32); 166 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS; 167 168 spin_lock(&dev_priv->cap_lock); 169 for (i = 0; i < max_size; ++i) { 170 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 171 compat_cap->pairs[i][0] = i; 172 compat_cap->pairs[i][1] = vmw_mask_multisample 173 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 174 } 175 spin_unlock(&dev_priv->cap_lock); 176 177 return 0; 178 } 179 180 181 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 182 struct drm_file *file_priv) 183 { 184 struct drm_vmw_get_3d_cap_arg *arg = 185 (struct drm_vmw_get_3d_cap_arg *) data; 186 struct vmw_private *dev_priv = vmw_priv(dev); 187 uint32_t size; 188 u32 *fifo_mem; 189 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 190 void *bounce; 191 int ret; 192 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); 193 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 194 195 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) { 196 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n"); 197 return -EINVAL; 198 } 199 200 if (gb_objects && vmw_fp->gb_aware) 201 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 202 else if (gb_objects) 203 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t); 204 else 205 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) * 206 sizeof(uint32_t); 207 208 if (arg->max_size < size) 209 size = arg->max_size; 210 211 bounce = vzalloc(size); 212 if (unlikely(bounce == NULL)) { 213 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 214 return -ENOMEM; 215 } 216 217 if (gb_objects && vmw_fp->gb_aware) { 218 int i, num; 219 uint32_t *bounce32 = (uint32_t *) bounce; 220 221 num = size / sizeof(uint32_t); 222 if (num > SVGA3D_DEVCAP_MAX) 223 num = SVGA3D_DEVCAP_MAX; 224 225 spin_lock(&dev_priv->cap_lock); 226 for (i = 0; i < num; ++i) { 227 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 228 *bounce32++ = vmw_mask_multisample 229 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 230 } 231 spin_unlock(&dev_priv->cap_lock); 232 } else if (gb_objects) { 233 ret = vmw_fill_compat_cap(dev_priv, bounce, size); 234 if (unlikely(ret != 0)) 235 goto out_err; 236 } else { 237 fifo_mem = dev_priv->mmio_virt; 238 memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 239 } 240 241 ret = copy_to_user(buffer, bounce, size); 242 if (ret) 243 ret = -EFAULT; 244 out_err: 245 vfree(bounce); 246 247 if (unlikely(ret != 0)) 248 DRM_ERROR("Failed to report 3D caps info.\n"); 249 250 return ret; 251 } 252 253 int vmw_present_ioctl(struct drm_device *dev, void *data, 254 struct drm_file *file_priv) 255 { 256 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 257 struct vmw_private *dev_priv = vmw_priv(dev); 258 struct drm_vmw_present_arg *arg = 259 (struct drm_vmw_present_arg *)data; 260 struct vmw_surface *surface; 261 struct drm_vmw_rect __user *clips_ptr; 262 struct drm_vmw_rect *clips = NULL; 263 struct drm_framebuffer *fb; 264 struct vmw_framebuffer *vfb; 265 struct vmw_resource *res; 266 uint32_t num_clips; 267 int ret; 268 269 num_clips = arg->num_clips; 270 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 271 272 if (unlikely(num_clips == 0)) 273 return 0; 274 275 if (clips_ptr == NULL) { 276 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n"); 277 ret = -EINVAL; 278 goto out_clips; 279 } 280 281 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 282 if (clips == NULL) { 283 DRM_ERROR("Failed to allocate clip rect list.\n"); 284 ret = -ENOMEM; 285 goto out_clips; 286 } 287 288 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 289 if (ret) { 290 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 291 ret = -EFAULT; 292 goto out_no_copy; 293 } 294 295 drm_modeset_lock_all(dev); 296 297 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id); 298 if (!fb) { 299 VMW_DEBUG_USER("Invalid framebuffer id.\n"); 300 ret = -ENOENT; 301 goto out_no_fb; 302 } 303 vfb = vmw_framebuffer_to_vfb(fb); 304 305 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 306 if (unlikely(ret != 0)) 307 goto out_no_ttm_lock; 308 309 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 310 user_surface_converter, 311 &res); 312 if (ret) 313 goto out_no_surface; 314 315 surface = vmw_res_to_srf(res); 316 ret = vmw_kms_present(dev_priv, file_priv, 317 vfb, surface, arg->sid, 318 arg->dest_x, arg->dest_y, 319 clips, num_clips); 320 321 /* vmw_user_surface_lookup takes one ref so does new_fb */ 322 vmw_surface_unreference(&surface); 323 324 out_no_surface: 325 ttm_read_unlock(&dev_priv->reservation_sem); 326 out_no_ttm_lock: 327 drm_framebuffer_put(fb); 328 out_no_fb: 329 drm_modeset_unlock_all(dev); 330 out_no_copy: 331 kfree(clips); 332 out_clips: 333 return ret; 334 } 335 336 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 337 struct drm_file *file_priv) 338 { 339 struct vmw_private *dev_priv = vmw_priv(dev); 340 struct drm_vmw_present_readback_arg *arg = 341 (struct drm_vmw_present_readback_arg *)data; 342 struct drm_vmw_fence_rep __user *user_fence_rep = 343 (struct drm_vmw_fence_rep __user *) 344 (unsigned long)arg->fence_rep; 345 struct drm_vmw_rect __user *clips_ptr; 346 struct drm_vmw_rect *clips = NULL; 347 struct drm_framebuffer *fb; 348 struct vmw_framebuffer *vfb; 349 uint32_t num_clips; 350 int ret; 351 352 num_clips = arg->num_clips; 353 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 354 355 if (unlikely(num_clips == 0)) 356 return 0; 357 358 if (clips_ptr == NULL) { 359 VMW_DEBUG_USER("Argument clips_ptr must be specified.\n"); 360 ret = -EINVAL; 361 goto out_clips; 362 } 363 364 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 365 if (clips == NULL) { 366 DRM_ERROR("Failed to allocate clip rect list.\n"); 367 ret = -ENOMEM; 368 goto out_clips; 369 } 370 371 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 372 if (ret) { 373 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 374 ret = -EFAULT; 375 goto out_no_copy; 376 } 377 378 drm_modeset_lock_all(dev); 379 380 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id); 381 if (!fb) { 382 VMW_DEBUG_USER("Invalid framebuffer id.\n"); 383 ret = -ENOENT; 384 goto out_no_fb; 385 } 386 387 vfb = vmw_framebuffer_to_vfb(fb); 388 if (!vfb->bo) { 389 VMW_DEBUG_USER("Framebuffer not buffer backed.\n"); 390 ret = -EINVAL; 391 goto out_no_ttm_lock; 392 } 393 394 ret = ttm_read_lock(&dev_priv->reservation_sem, true); 395 if (unlikely(ret != 0)) 396 goto out_no_ttm_lock; 397 398 ret = vmw_kms_readback(dev_priv, file_priv, 399 vfb, user_fence_rep, 400 clips, num_clips); 401 402 ttm_read_unlock(&dev_priv->reservation_sem); 403 out_no_ttm_lock: 404 drm_framebuffer_put(fb); 405 out_no_fb: 406 drm_modeset_unlock_all(dev); 407 out_no_copy: 408 kfree(clips); 409 out_clips: 410 return ret; 411 } 412 413 414 #ifndef __NetBSD__ /* XXX vmwgfx fops ping */ 415 416 /** 417 * vmw_fops_poll - wrapper around the drm_poll function 418 * 419 * @filp: See the linux fops poll documentation. 420 * @wait: See the linux fops poll documentation. 421 * 422 * Wrapper around the drm_poll function that makes sure the device is 423 * processing the fifo if drm_poll decides to wait. 424 */ 425 __poll_t vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 426 { 427 struct drm_file *file_priv = filp->private_data; 428 struct vmw_private *dev_priv = 429 vmw_priv(file_priv->minor->dev); 430 431 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 432 return drm_poll(filp, wait); 433 } 434 435 436 /** 437 * vmw_fops_read - wrapper around the drm_read function 438 * 439 * @filp: See the linux fops read documentation. 440 * @buffer: See the linux fops read documentation. 441 * @count: See the linux fops read documentation. 442 * offset: See the linux fops read documentation. 443 * 444 * Wrapper around the drm_read function that makes sure the device is 445 * processing the fifo if drm_read decides to wait. 446 */ 447 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 448 size_t count, loff_t *offset) 449 { 450 struct drm_file *file_priv = filp->private_data; 451 struct vmw_private *dev_priv = 452 vmw_priv(file_priv->minor->dev); 453 454 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 455 return drm_read(filp, buffer, count, offset); 456 } 457 458 #endif /* __NetBSD__ */ 459
Indexes created Tue Sep 23 20:09:58 GMT 2025