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 "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->vram_size; 57 break; 58 case DRM_VMW_PARAM_FIFO_HW_VERSION: 59 { 60 __le32 __iomem *fifo_mem = dev_priv->mmio_virt; 61 62 param->value = ioread32(fifo_mem + SVGA_FIFO_3D_HWVERSION); 63 break; 64 } 65 default: 66 DRM_ERROR("Illegal vmwgfx get param request: %d\n", 67 param->param); 68 return -EINVAL; 69 } 70 71 return 0; 72 } 73 74 75 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 76 struct drm_file *file_priv) 77 { 78 struct drm_vmw_get_3d_cap_arg *arg = 79 (struct drm_vmw_get_3d_cap_arg *) data; 80 struct vmw_private *dev_priv = vmw_priv(dev); 81 uint32_t size; 82 __le32 __iomem *fifo_mem; 83 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 84 void *bounce; 85 int ret; 86 87 if (unlikely(arg->pad64 != 0)) { 88 DRM_ERROR("Illegal GET_3D_CAP argument.\n"); 89 return -EINVAL; 90 } 91 92 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) << 2; 93 94 if (arg->max_size < size) 95 size = arg->max_size; 96 97 bounce = vmalloc(size); 98 if (unlikely(bounce == NULL)) { 99 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 100 return -ENOMEM; 101 } 102 103 fifo_mem = dev_priv->mmio_virt; 104 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 105 106 ret = copy_to_user(buffer, bounce, size); 107 vfree(bounce); 108 109 if (unlikely(ret != 0)) 110 DRM_ERROR("Failed to report 3D caps info.\n"); 111 112 return ret; 113 } 114 115 int vmw_present_ioctl(struct drm_device *dev, void *data, 116 struct drm_file *file_priv) 117 { 118 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 119 struct vmw_private *dev_priv = vmw_priv(dev); 120 struct drm_vmw_present_arg *arg = 121 (struct drm_vmw_present_arg *)data; 122 struct vmw_surface *surface; 123 struct vmw_master *vmaster = vmw_master(file_priv->master); 124 struct drm_vmw_rect __user *clips_ptr; 125 struct drm_vmw_rect *clips = NULL; 126 struct drm_mode_object *obj; 127 struct vmw_framebuffer *vfb; 128 uint32_t num_clips; 129 int ret; 130 131 num_clips = arg->num_clips; 132 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 133 134 if (unlikely(num_clips == 0)) 135 return 0; 136 137 if (clips_ptr == NULL) { 138 DRM_ERROR("Variable clips_ptr must be specified.\n"); 139 ret = -EINVAL; 140 goto out_clips; 141 } 142 143 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 144 if (clips == NULL) { 145 DRM_ERROR("Failed to allocate clip rect list.\n"); 146 ret = -ENOMEM; 147 goto out_clips; 148 } 149 150 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 151 if (ret) { 152 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 153 ret = -EFAULT; 154 goto out_no_copy; 155 } 156 157 ret = mutex_lock_interruptible(&dev->mode_config.mutex); 158 if (unlikely(ret != 0)) { 159 ret = -ERESTARTSYS; 160 goto out_no_mode_mutex; 161 } 162 163 obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB); 164 if (!obj) { 165 DRM_ERROR("Invalid framebuffer id.\n"); 166 ret = -EINVAL; 167 goto out_no_fb; 168 } 169 170 vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj)); 171 if (!vfb->dmabuf) { 172 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 173 ret = -EINVAL; 174 goto out_no_fb; 175 } 176 177 ret = ttm_read_lock(&vmaster->lock, true); 178 if (unlikely(ret != 0)) 179 goto out_no_ttm_lock; 180 181 ret = vmw_user_surface_lookup_handle(dev_priv, tfile, arg->sid, 182 &surface); 183 if (ret) 184 goto out_no_surface; 185 186 ret = vmw_kms_present(dev_priv, file_priv, 187 vfb, surface, arg->sid, 188 arg->dest_x, arg->dest_y, 189 clips, num_clips); 190 191 /* vmw_user_surface_lookup takes one ref so does new_fb */ 192 vmw_surface_unreference(&surface); 193 194 out_no_surface: 195 ttm_read_unlock(&vmaster->lock); 196 out_no_ttm_lock: 197 out_no_fb: 198 mutex_unlock(&dev->mode_config.mutex); 199 out_no_mode_mutex: 200 out_no_copy: 201 kfree(clips); 202 out_clips: 203 return ret; 204 } 205 206 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 207 struct drm_file *file_priv) 208 { 209 struct vmw_private *dev_priv = vmw_priv(dev); 210 struct drm_vmw_present_readback_arg *arg = 211 (struct drm_vmw_present_readback_arg *)data; 212 struct drm_vmw_fence_rep __user *user_fence_rep = 213 (struct drm_vmw_fence_rep __user *) 214 (unsigned long)arg->fence_rep; 215 struct vmw_master *vmaster = vmw_master(file_priv->master); 216 struct drm_vmw_rect __user *clips_ptr; 217 struct drm_vmw_rect *clips = NULL; 218 struct drm_mode_object *obj; 219 struct vmw_framebuffer *vfb; 220 uint32_t num_clips; 221 int ret; 222 223 num_clips = arg->num_clips; 224 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 225 226 if (unlikely(num_clips == 0)) 227 return 0; 228 229 if (clips_ptr == NULL) { 230 DRM_ERROR("Argument clips_ptr must be specified.\n"); 231 ret = -EINVAL; 232 goto out_clips; 233 } 234 235 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 236 if (clips == NULL) { 237 DRM_ERROR("Failed to allocate clip rect list.\n"); 238 ret = -ENOMEM; 239 goto out_clips; 240 } 241 242 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 243 if (ret) { 244 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 245 ret = -EFAULT; 246 goto out_no_copy; 247 } 248 249 ret = mutex_lock_interruptible(&dev->mode_config.mutex); 250 if (unlikely(ret != 0)) { 251 ret = -ERESTARTSYS; 252 goto out_no_mode_mutex; 253 } 254 255 obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB); 256 if (!obj) { 257 DRM_ERROR("Invalid framebuffer id.\n"); 258 ret = -EINVAL; 259 goto out_no_fb; 260 } 261 262 vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj)); 263 if (!vfb->dmabuf) { 264 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 265 ret = -EINVAL; 266 goto out_no_fb; 267 } 268 269 ret = ttm_read_lock(&vmaster->lock, true); 270 if (unlikely(ret != 0)) 271 goto out_no_ttm_lock; 272 273 ret = vmw_kms_readback(dev_priv, file_priv, 274 vfb, user_fence_rep, 275 clips, num_clips); 276 277 ttm_read_unlock(&vmaster->lock); 278 out_no_ttm_lock: 279 out_no_fb: 280 mutex_unlock(&dev->mode_config.mutex); 281 out_no_mode_mutex: 282 out_no_copy: 283 kfree(clips); 284 out_clips: 285 return ret; 286 } 287 288 289 /** 290 * vmw_fops_poll - wrapper around the drm_poll function 291 * 292 * @filp: See the linux fops poll documentation. 293 * @wait: See the linux fops poll documentation. 294 * 295 * Wrapper around the drm_poll function that makes sure the device is 296 * processing the fifo if drm_poll decides to wait. 297 */ 298 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 299 { 300 struct drm_file *file_priv = filp->private_data; 301 struct vmw_private *dev_priv = 302 vmw_priv(file_priv->minor->dev); 303 304 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 305 return drm_poll(filp, wait); 306 } 307 308 309 /** 310 * vmw_fops_read - wrapper around the drm_read function 311 * 312 * @filp: See the linux fops read documentation. 313 * @buffer: See the linux fops read documentation. 314 * @count: See the linux fops read documentation. 315 * offset: See the linux fops read documentation. 316 * 317 * Wrapper around the drm_read function that makes sure the device is 318 * processing the fifo if drm_read decides to wait. 319 */ 320 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 321 size_t count, loff_t *offset) 322 { 323 struct drm_file *file_priv = filp->private_data; 324 struct vmw_private *dev_priv = 325 vmw_priv(file_priv->minor->dev); 326 327 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 328 return drm_read(filp, buffer, count, offset); 329 } 330