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