1 /************************************************************************** 2 * 3 * Copyright © 2009 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 32 struct svga_3d_compat_cap { 33 SVGA3dCapsRecordHeader header; 34 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX]; 35 }; 36 37 int vmw_getparam_ioctl(struct drm_device *dev, void *data, 38 struct drm_file *file_priv) 39 { 40 struct vmw_private *dev_priv = vmw_priv(dev); 41 struct drm_vmw_getparam_arg *param = 42 (struct drm_vmw_getparam_arg *)data; 43 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 44 45 switch (param->param) { 46 case DRM_VMW_PARAM_NUM_STREAMS: 47 param->value = vmw_overlay_num_overlays(dev_priv); 48 break; 49 case DRM_VMW_PARAM_NUM_FREE_STREAMS: 50 param->value = vmw_overlay_num_free_overlays(dev_priv); 51 break; 52 case DRM_VMW_PARAM_3D: 53 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0; 54 break; 55 case DRM_VMW_PARAM_HW_CAPS: 56 param->value = dev_priv->capabilities; 57 break; 58 case DRM_VMW_PARAM_FIFO_CAPS: 59 param->value = dev_priv->fifo.capabilities; 60 break; 61 case DRM_VMW_PARAM_MAX_FB_SIZE: 62 param->value = dev_priv->prim_bb_mem; 63 break; 64 case DRM_VMW_PARAM_FIFO_HW_VERSION: 65 { 66 __le32 __iomem *fifo_mem = dev_priv->mmio_virt; 67 const struct vmw_fifo_state *fifo = &dev_priv->fifo; 68 69 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) { 70 param->value = SVGA3D_HWVERSION_WS8_B1; 71 break; 72 } 73 74 param->value = 75 ioread32(fifo_mem + 76 ((fifo->capabilities & 77 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ? 78 SVGA_FIFO_3D_HWVERSION_REVISED : 79 SVGA_FIFO_3D_HWVERSION)); 80 break; 81 } 82 case DRM_VMW_PARAM_MAX_SURF_MEMORY: 83 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 84 !vmw_fp->gb_aware) 85 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2; 86 else 87 param->value = dev_priv->memory_size; 88 break; 89 case DRM_VMW_PARAM_3D_CAPS_SIZE: 90 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) && 91 vmw_fp->gb_aware) 92 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 93 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) 94 param->value = sizeof(struct svga_3d_compat_cap) + 95 sizeof(uint32_t); 96 else 97 param->value = (SVGA_FIFO_3D_CAPS_LAST - 98 SVGA_FIFO_3D_CAPS + 1) * 99 sizeof(uint32_t); 100 break; 101 case DRM_VMW_PARAM_MAX_MOB_MEMORY: 102 vmw_fp->gb_aware = true; 103 param->value = dev_priv->max_mob_pages * PAGE_SIZE; 104 break; 105 default: 106 DRM_ERROR("Illegal vmwgfx get param request: %d\n", 107 param->param); 108 return -EINVAL; 109 } 110 111 return 0; 112 } 113 114 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce, 115 size_t size) 116 { 117 struct svga_3d_compat_cap *compat_cap = 118 (struct svga_3d_compat_cap *) bounce; 119 unsigned int i; 120 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs); 121 unsigned int max_size; 122 123 if (size < pair_offset) 124 return -EINVAL; 125 126 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair); 127 128 if (max_size > SVGA3D_DEVCAP_MAX) 129 max_size = SVGA3D_DEVCAP_MAX; 130 131 compat_cap->header.length = 132 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32); 133 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS; 134 135 mutex_lock(&dev_priv->hw_mutex); 136 for (i = 0; i < max_size; ++i) { 137 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 138 compat_cap->pairs[i][0] = i; 139 compat_cap->pairs[i][1] = vmw_read(dev_priv, SVGA_REG_DEV_CAP); 140 } 141 mutex_unlock(&dev_priv->hw_mutex); 142 143 return 0; 144 } 145 146 147 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 148 struct drm_file *file_priv) 149 { 150 struct drm_vmw_get_3d_cap_arg *arg = 151 (struct drm_vmw_get_3d_cap_arg *) data; 152 struct vmw_private *dev_priv = vmw_priv(dev); 153 uint32_t size; 154 __le32 __iomem *fifo_mem; 155 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 156 void *bounce; 157 int ret; 158 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS); 159 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 160 161 if (unlikely(arg->pad64 != 0)) { 162 DRM_ERROR("Illegal GET_3D_CAP argument.\n"); 163 return -EINVAL; 164 } 165 166 if (gb_objects && vmw_fp->gb_aware) 167 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t); 168 else if (gb_objects) 169 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t); 170 else 171 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) * 172 sizeof(uint32_t); 173 174 if (arg->max_size < size) 175 size = arg->max_size; 176 177 bounce = vzalloc(size); 178 if (unlikely(bounce == NULL)) { 179 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 180 return -ENOMEM; 181 } 182 183 if (gb_objects && vmw_fp->gb_aware) { 184 int i, num; 185 uint32_t *bounce32 = (uint32_t *) bounce; 186 187 num = size / sizeof(uint32_t); 188 if (num > SVGA3D_DEVCAP_MAX) 189 num = SVGA3D_DEVCAP_MAX; 190 191 mutex_lock(&dev_priv->hw_mutex); 192 for (i = 0; i < num; ++i) { 193 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i); 194 *bounce32++ = vmw_read(dev_priv, SVGA_REG_DEV_CAP); 195 } 196 mutex_unlock(&dev_priv->hw_mutex); 197 } else if (gb_objects) { 198 ret = vmw_fill_compat_cap(dev_priv, bounce, size); 199 if (unlikely(ret != 0)) 200 goto out_err; 201 } else { 202 fifo_mem = dev_priv->mmio_virt; 203 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 204 } 205 206 ret = copy_to_user(buffer, bounce, size); 207 if (ret) 208 ret = -EFAULT; 209 out_err: 210 vfree(bounce); 211 212 if (unlikely(ret != 0)) 213 DRM_ERROR("Failed to report 3D caps info.\n"); 214 215 return ret; 216 } 217 218 int vmw_present_ioctl(struct drm_device *dev, void *data, 219 struct drm_file *file_priv) 220 { 221 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 222 struct vmw_private *dev_priv = vmw_priv(dev); 223 struct drm_vmw_present_arg *arg = 224 (struct drm_vmw_present_arg *)data; 225 struct vmw_surface *surface; 226 struct vmw_master *vmaster = vmw_master(file_priv->master); 227 struct drm_vmw_rect __user *clips_ptr; 228 struct drm_vmw_rect *clips = NULL; 229 struct drm_framebuffer *fb; 230 struct vmw_framebuffer *vfb; 231 struct vmw_resource *res; 232 uint32_t num_clips; 233 int ret; 234 235 num_clips = arg->num_clips; 236 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 237 238 if (unlikely(num_clips == 0)) 239 return 0; 240 241 if (clips_ptr == NULL) { 242 DRM_ERROR("Variable clips_ptr must be specified.\n"); 243 ret = -EINVAL; 244 goto out_clips; 245 } 246 247 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 248 if (clips == NULL) { 249 DRM_ERROR("Failed to allocate clip rect list.\n"); 250 ret = -ENOMEM; 251 goto out_clips; 252 } 253 254 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 255 if (ret) { 256 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 257 ret = -EFAULT; 258 goto out_no_copy; 259 } 260 261 drm_modeset_lock_all(dev); 262 263 fb = drm_framebuffer_lookup(dev, arg->fb_id); 264 if (!fb) { 265 DRM_ERROR("Invalid framebuffer id.\n"); 266 ret = -ENOENT; 267 goto out_no_fb; 268 } 269 vfb = vmw_framebuffer_to_vfb(fb); 270 271 ret = ttm_read_lock(&vmaster->lock, true); 272 if (unlikely(ret != 0)) 273 goto out_no_ttm_lock; 274 275 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 276 user_surface_converter, 277 &res); 278 if (ret) 279 goto out_no_surface; 280 281 surface = vmw_res_to_srf(res); 282 ret = vmw_kms_present(dev_priv, file_priv, 283 vfb, surface, arg->sid, 284 arg->dest_x, arg->dest_y, 285 clips, num_clips); 286 287 /* vmw_user_surface_lookup takes one ref so does new_fb */ 288 vmw_surface_unreference(&surface); 289 290 out_no_surface: 291 ttm_read_unlock(&vmaster->lock); 292 out_no_ttm_lock: 293 drm_framebuffer_unreference(fb); 294 out_no_fb: 295 drm_modeset_unlock_all(dev); 296 out_no_copy: 297 kfree(clips); 298 out_clips: 299 return ret; 300 } 301 302 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 303 struct drm_file *file_priv) 304 { 305 struct vmw_private *dev_priv = vmw_priv(dev); 306 struct drm_vmw_present_readback_arg *arg = 307 (struct drm_vmw_present_readback_arg *)data; 308 struct drm_vmw_fence_rep __user *user_fence_rep = 309 (struct drm_vmw_fence_rep __user *) 310 (unsigned long)arg->fence_rep; 311 struct vmw_master *vmaster = vmw_master(file_priv->master); 312 struct drm_vmw_rect __user *clips_ptr; 313 struct drm_vmw_rect *clips = NULL; 314 struct drm_framebuffer *fb; 315 struct vmw_framebuffer *vfb; 316 uint32_t num_clips; 317 int ret; 318 319 num_clips = arg->num_clips; 320 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 321 322 if (unlikely(num_clips == 0)) 323 return 0; 324 325 if (clips_ptr == NULL) { 326 DRM_ERROR("Argument clips_ptr must be specified.\n"); 327 ret = -EINVAL; 328 goto out_clips; 329 } 330 331 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 332 if (clips == NULL) { 333 DRM_ERROR("Failed to allocate clip rect list.\n"); 334 ret = -ENOMEM; 335 goto out_clips; 336 } 337 338 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 339 if (ret) { 340 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 341 ret = -EFAULT; 342 goto out_no_copy; 343 } 344 345 drm_modeset_lock_all(dev); 346 347 fb = drm_framebuffer_lookup(dev, arg->fb_id); 348 if (!fb) { 349 DRM_ERROR("Invalid framebuffer id.\n"); 350 ret = -ENOENT; 351 goto out_no_fb; 352 } 353 354 vfb = vmw_framebuffer_to_vfb(fb); 355 if (!vfb->dmabuf) { 356 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 357 ret = -EINVAL; 358 goto out_no_ttm_lock; 359 } 360 361 ret = ttm_read_lock(&vmaster->lock, true); 362 if (unlikely(ret != 0)) 363 goto out_no_ttm_lock; 364 365 ret = vmw_kms_readback(dev_priv, file_priv, 366 vfb, user_fence_rep, 367 clips, num_clips); 368 369 ttm_read_unlock(&vmaster->lock); 370 out_no_ttm_lock: 371 drm_framebuffer_unreference(fb); 372 out_no_fb: 373 drm_modeset_unlock_all(dev); 374 out_no_copy: 375 kfree(clips); 376 out_clips: 377 return ret; 378 } 379 380 381 /** 382 * vmw_fops_poll - wrapper around the drm_poll function 383 * 384 * @filp: See the linux fops poll documentation. 385 * @wait: See the linux fops poll documentation. 386 * 387 * Wrapper around the drm_poll function that makes sure the device is 388 * processing the fifo if drm_poll decides to wait. 389 */ 390 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 391 { 392 struct drm_file *file_priv = filp->private_data; 393 struct vmw_private *dev_priv = 394 vmw_priv(file_priv->minor->dev); 395 396 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 397 return drm_poll(filp, wait); 398 } 399 400 401 /** 402 * vmw_fops_read - wrapper around the drm_read function 403 * 404 * @filp: See the linux fops read documentation. 405 * @buffer: See the linux fops read documentation. 406 * @count: See the linux fops read documentation. 407 * offset: See the linux fops read documentation. 408 * 409 * Wrapper around the drm_read function that makes sure the device is 410 * processing the fifo if drm_read decides to wait. 411 */ 412 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 413 size_t count, loff_t *offset) 414 { 415 struct drm_file *file_priv = filp->private_data; 416 struct vmw_private *dev_priv = 417 vmw_priv(file_priv->minor->dev); 418 419 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 420 return drm_read(filp, buffer, count, offset); 421 } 422