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_supports_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 = vmw_fifo_caps(dev_priv); 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 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) { 71 param->value = SVGA3D_HWVERSION_WS8_B1; 72 break; 73 } 74 75 param->value = 76 vmw_fifo_mem_read(dev_priv, 77 ((vmw_fifo_caps(dev_priv) & 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 = has_sm4_context(dev_priv); 115 break; 116 case DRM_VMW_PARAM_SM4_1: 117 param->value = has_sm4_1_context(dev_priv); 118 break; 119 case DRM_VMW_PARAM_SM5: 120 param->value = has_sm5_context(dev_priv); 121 break; 122 default: 123 return -EINVAL; 124 } 125 126 return 0; 127 } 128 129 static u32 vmw_mask_legacy_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 * MULTISAMPLE_MASKABLESAMPLES devcap is marked as deprecated by virtual 137 * device. 138 */ 139 if (cap == SVGA3D_DEVCAP_DEAD5) 140 return 0; 141 142 return fmt_value; 143 } 144 145 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce, 146 size_t size) 147 { 148 struct svga_3d_compat_cap *compat_cap = 149 (struct svga_3d_compat_cap *) bounce; 150 unsigned int i; 151 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs); 152 unsigned int max_size; 153 154 if (size < pair_offset) 155 return -EINVAL; 156 157 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair); 158 159 if (max_size > SVGA3D_DEVCAP_MAX) 160 max_size = SVGA3D_DEVCAP_MAX; 161 162 compat_cap->header.length = 163 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32); 164 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS; 165 166 spin_lock(&dev_priv->cap_lock); 167 for (i = 0; i < max_size; ++i) { 168 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 169 compat_cap->pairs[i][0] = i; 170 compat_cap->pairs[i][1] = vmw_mask_legacy_multisample 171 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 172 } 173 spin_unlock(&dev_priv->cap_lock); 174 175 return 0; 176 } 177 178 179 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 180 struct drm_file *file_priv) 181 { 182 struct drm_vmw_get_3d_cap_arg *arg = 183 (struct drm_vmw_get_3d_cap_arg *) data; 184 struct vmw_private *dev_priv = vmw_priv(dev); 185 uint32_t size; 186 u32 *fifo_mem; 187 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 188 void *bounce; 189 int ret; 190 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); 191 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 192 193 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) { 194 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n"); 195 return -EINVAL; 196 } 197 198 if (gb_objects && vmw_fp->gb_aware) 199 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 200 else if (gb_objects) 201 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t); 202 else 203 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) * 204 sizeof(uint32_t); 205 206 if (arg->max_size < size) 207 size = arg->max_size; 208 209 bounce = vzalloc(size); 210 if (unlikely(bounce == NULL)) { 211 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 212 return -ENOMEM; 213 } 214 215 if (gb_objects && vmw_fp->gb_aware) { 216 int i, num; 217 uint32_t *bounce32 = (uint32_t *) bounce; 218 219 num = size / sizeof(uint32_t); 220 if (num > SVGA3D_DEVCAP_MAX) 221 num = SVGA3D_DEVCAP_MAX; 222 223 spin_lock(&dev_priv->cap_lock); 224 for (i = 0; i < num; ++i) { 225 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 226 *bounce32++ = vmw_mask_legacy_multisample 227 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP)); 228 } 229 spin_unlock(&dev_priv->cap_lock); 230 } else if (gb_objects) { 231 ret = vmw_fill_compat_cap(dev_priv, bounce, size); 232 if (unlikely(ret != 0)) 233 goto out_err; 234 } else { 235 fifo_mem = dev_priv->fifo_mem; 236 memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 237 } 238 239 ret = copy_to_user(buffer, bounce, size); 240 if (ret) 241 ret = -EFAULT; 242 out_err: 243 vfree(bounce); 244 245 if (unlikely(ret != 0)) 246 DRM_ERROR("Failed to report 3D caps info.\n"); 247 248 return ret; 249 } 250 251 int vmw_present_ioctl(struct drm_device *dev, void *data, 252 struct drm_file *file_priv) 253 { 254 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 255 struct vmw_private *dev_priv = vmw_priv(dev); 256 struct drm_vmw_present_arg *arg = 257 (struct drm_vmw_present_arg *)data; 258 struct vmw_surface *surface; 259 struct drm_vmw_rect __user *clips_ptr; 260 struct drm_vmw_rect *clips = NULL; 261 struct drm_framebuffer *fb; 262 struct vmw_framebuffer *vfb; 263 struct vmw_resource *res; 264 uint32_t num_clips; 265 int ret; 266 267 num_clips = arg->num_clips; 268 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr; 269 270 if (unlikely(num_clips == 0)) 271 return 0; 272 273 if (clips_ptr == NULL) { 274 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n"); 275 ret = -EINVAL; 276 goto out_clips; 277 } 278 279 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 280 if (clips == NULL) { 281 DRM_ERROR("Failed to allocate clip rect list.\n"); 282 ret = -ENOMEM; 283 goto out_clips; 284 } 285 286 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 287 if (ret) { 288 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 289 ret = -EFAULT; 290 goto out_no_copy; 291 } 292 293 drm_modeset_lock_all(dev); 294 295 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id); 296 if (!fb) { 297 VMW_DEBUG_USER("Invalid framebuffer id.\n"); 298 ret = -ENOENT; 299 goto out_no_fb; 300 } 301 vfb = vmw_framebuffer_to_vfb(fb); 302 303 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 304 user_surface_converter, 305 &res); 306 if (ret) 307 goto out_no_surface; 308 309 surface = vmw_res_to_srf(res); 310 ret = vmw_kms_present(dev_priv, file_priv, 311 vfb, surface, arg->sid, 312 arg->dest_x, arg->dest_y, 313 clips, num_clips); 314 315 /* vmw_user_surface_lookup takes one ref so does new_fb */ 316 vmw_surface_unreference(&surface); 317 318 out_no_surface: 319 drm_framebuffer_put(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 VMW_DEBUG_USER("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 VMW_DEBUG_USER("Invalid framebuffer id.\n"); 375 ret = -ENOENT; 376 goto out_no_fb; 377 } 378 379 vfb = vmw_framebuffer_to_vfb(fb); 380 if (!vfb->bo) { 381 VMW_DEBUG_USER("Framebuffer not buffer backed.\n"); 382 ret = -EINVAL; 383 goto out_no_ttm_lock; 384 } 385 386 ret = vmw_kms_readback(dev_priv, file_priv, 387 vfb, user_fence_rep, 388 clips, num_clips); 389 390 out_no_ttm_lock: 391 drm_framebuffer_put(fb); 392 out_no_fb: 393 drm_modeset_unlock_all(dev); 394 out_no_copy: 395 kfree(clips); 396 out_clips: 397 return ret; 398 } 399