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->vram_size; 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 default: 72 DRM_ERROR("Illegal vmwgfx get param request: %d\n", 73 param->param); 74 return -EINVAL; 75 } 76 77 return 0; 78 } 79 80 81 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 82 struct drm_file *file_priv) 83 { 84 struct drm_vmw_get_3d_cap_arg *arg = 85 (struct drm_vmw_get_3d_cap_arg *) data; 86 struct vmw_private *dev_priv = vmw_priv(dev); 87 uint32_t size; 88 __le32 __iomem *fifo_mem; 89 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 90 void *bounce; 91 int ret; 92 93 if (unlikely(arg->pad64 != 0)) { 94 DRM_ERROR("Illegal GET_3D_CAP argument.\n"); 95 return -EINVAL; 96 } 97 98 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) << 2; 99 100 if (arg->max_size < size) 101 size = arg->max_size; 102 103 bounce = vmalloc(size); 104 if (unlikely(bounce == NULL)) { 105 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 106 return -ENOMEM; 107 } 108 109 fifo_mem = dev_priv->mmio_virt; 110 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 111 112 ret = copy_to_user(buffer, bounce, size); 113 if (ret) 114 ret = -EFAULT; 115 vfree(bounce); 116 117 if (unlikely(ret != 0)) 118 DRM_ERROR("Failed to report 3D caps info.\n"); 119 120 return ret; 121 } 122 123 int vmw_present_ioctl(struct drm_device *dev, void *data, 124 struct drm_file *file_priv) 125 { 126 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 127 struct vmw_private *dev_priv = vmw_priv(dev); 128 struct drm_vmw_present_arg *arg = 129 (struct drm_vmw_present_arg *)data; 130 struct vmw_surface *surface; 131 struct vmw_master *vmaster = vmw_master(file_priv->master); 132 struct drm_vmw_rect __user *clips_ptr; 133 struct drm_vmw_rect *clips = NULL; 134 struct drm_mode_object *obj; 135 struct vmw_framebuffer *vfb; 136 uint32_t num_clips; 137 int ret; 138 139 num_clips = arg->num_clips; 140 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 141 142 if (unlikely(num_clips == 0)) 143 return 0; 144 145 if (clips_ptr == NULL) { 146 DRM_ERROR("Variable clips_ptr must be specified.\n"); 147 ret = -EINVAL; 148 goto out_clips; 149 } 150 151 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 152 if (clips == NULL) { 153 DRM_ERROR("Failed to allocate clip rect list.\n"); 154 ret = -ENOMEM; 155 goto out_clips; 156 } 157 158 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 159 if (ret) { 160 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 161 ret = -EFAULT; 162 goto out_no_copy; 163 } 164 165 ret = mutex_lock_interruptible(&dev->mode_config.mutex); 166 if (unlikely(ret != 0)) { 167 ret = -ERESTARTSYS; 168 goto out_no_mode_mutex; 169 } 170 171 obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB); 172 if (!obj) { 173 DRM_ERROR("Invalid framebuffer id.\n"); 174 ret = -EINVAL; 175 goto out_no_fb; 176 } 177 vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj)); 178 179 ret = ttm_read_lock(&vmaster->lock, true); 180 if (unlikely(ret != 0)) 181 goto out_no_ttm_lock; 182 183 ret = vmw_user_surface_lookup_handle(dev_priv, tfile, arg->sid, 184 &surface); 185 if (ret) 186 goto out_no_surface; 187 188 ret = vmw_kms_present(dev_priv, file_priv, 189 vfb, surface, arg->sid, 190 arg->dest_x, arg->dest_y, 191 clips, num_clips); 192 193 /* vmw_user_surface_lookup takes one ref so does new_fb */ 194 vmw_surface_unreference(&surface); 195 196 out_no_surface: 197 ttm_read_unlock(&vmaster->lock); 198 out_no_ttm_lock: 199 out_no_fb: 200 mutex_unlock(&dev->mode_config.mutex); 201 out_no_mode_mutex: 202 out_no_copy: 203 kfree(clips); 204 out_clips: 205 return ret; 206 } 207 208 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 209 struct drm_file *file_priv) 210 { 211 struct vmw_private *dev_priv = vmw_priv(dev); 212 struct drm_vmw_present_readback_arg *arg = 213 (struct drm_vmw_present_readback_arg *)data; 214 struct drm_vmw_fence_rep __user *user_fence_rep = 215 (struct drm_vmw_fence_rep __user *) 216 (unsigned long)arg->fence_rep; 217 struct vmw_master *vmaster = vmw_master(file_priv->master); 218 struct drm_vmw_rect __user *clips_ptr; 219 struct drm_vmw_rect *clips = NULL; 220 struct drm_mode_object *obj; 221 struct vmw_framebuffer *vfb; 222 uint32_t num_clips; 223 int ret; 224 225 num_clips = arg->num_clips; 226 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 227 228 if (unlikely(num_clips == 0)) 229 return 0; 230 231 if (clips_ptr == NULL) { 232 DRM_ERROR("Argument clips_ptr must be specified.\n"); 233 ret = -EINVAL; 234 goto out_clips; 235 } 236 237 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 238 if (clips == NULL) { 239 DRM_ERROR("Failed to allocate clip rect list.\n"); 240 ret = -ENOMEM; 241 goto out_clips; 242 } 243 244 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 245 if (ret) { 246 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 247 ret = -EFAULT; 248 goto out_no_copy; 249 } 250 251 ret = mutex_lock_interruptible(&dev->mode_config.mutex); 252 if (unlikely(ret != 0)) { 253 ret = -ERESTARTSYS; 254 goto out_no_mode_mutex; 255 } 256 257 obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB); 258 if (!obj) { 259 DRM_ERROR("Invalid framebuffer id.\n"); 260 ret = -EINVAL; 261 goto out_no_fb; 262 } 263 264 vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj)); 265 if (!vfb->dmabuf) { 266 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 267 ret = -EINVAL; 268 goto out_no_fb; 269 } 270 271 ret = ttm_read_lock(&vmaster->lock, true); 272 if (unlikely(ret != 0)) 273 goto out_no_ttm_lock; 274 275 ret = vmw_kms_readback(dev_priv, file_priv, 276 vfb, user_fence_rep, 277 clips, num_clips); 278 279 ttm_read_unlock(&vmaster->lock); 280 out_no_ttm_lock: 281 out_no_fb: 282 mutex_unlock(&dev->mode_config.mutex); 283 out_no_mode_mutex: 284 out_no_copy: 285 kfree(clips); 286 out_clips: 287 return ret; 288 } 289 290 291 /** 292 * vmw_fops_poll - wrapper around the drm_poll function 293 * 294 * @filp: See the linux fops poll documentation. 295 * @wait: See the linux fops poll documentation. 296 * 297 * Wrapper around the drm_poll function that makes sure the device is 298 * processing the fifo if drm_poll decides to wait. 299 */ 300 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 301 { 302 struct drm_file *file_priv = filp->private_data; 303 struct vmw_private *dev_priv = 304 vmw_priv(file_priv->minor->dev); 305 306 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 307 return drm_poll(filp, wait); 308 } 309 310 311 /** 312 * vmw_fops_read - wrapper around the drm_read function 313 * 314 * @filp: See the linux fops read documentation. 315 * @buffer: See the linux fops read documentation. 316 * @count: See the linux fops read documentation. 317 * offset: See the linux fops read documentation. 318 * 319 * Wrapper around the drm_read function that makes sure the device is 320 * processing the fifo if drm_read decides to wait. 321 */ 322 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 323 size_t count, loff_t *offset) 324 { 325 struct drm_file *file_priv = filp->private_data; 326 struct vmw_private *dev_priv = 327 vmw_priv(file_priv->minor->dev); 328 329 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 330 return drm_read(filp, buffer, count, offset); 331 } 332