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 struct vmw_resource *res; 137 uint32_t num_clips; 138 int ret; 139 140 num_clips = arg->num_clips; 141 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 142 143 if (unlikely(num_clips == 0)) 144 return 0; 145 146 if (clips_ptr == NULL) { 147 DRM_ERROR("Variable clips_ptr must be specified.\n"); 148 ret = -EINVAL; 149 goto out_clips; 150 } 151 152 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 153 if (clips == NULL) { 154 DRM_ERROR("Failed to allocate clip rect list.\n"); 155 ret = -ENOMEM; 156 goto out_clips; 157 } 158 159 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 160 if (ret) { 161 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 162 ret = -EFAULT; 163 goto out_no_copy; 164 } 165 166 ret = mutex_lock_interruptible(&dev->mode_config.mutex); 167 if (unlikely(ret != 0)) { 168 ret = -ERESTARTSYS; 169 goto out_no_mode_mutex; 170 } 171 172 obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB); 173 if (!obj) { 174 DRM_ERROR("Invalid framebuffer id.\n"); 175 ret = -EINVAL; 176 goto out_no_fb; 177 } 178 vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj)); 179 180 ret = ttm_read_lock(&vmaster->lock, true); 181 if (unlikely(ret != 0)) 182 goto out_no_ttm_lock; 183 184 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid, 185 user_surface_converter, 186 &res); 187 if (ret) 188 goto out_no_surface; 189 190 surface = vmw_res_to_srf(res); 191 ret = vmw_kms_present(dev_priv, file_priv, 192 vfb, surface, arg->sid, 193 arg->dest_x, arg->dest_y, 194 clips, num_clips); 195 196 /* vmw_user_surface_lookup takes one ref so does new_fb */ 197 vmw_surface_unreference(&surface); 198 199 out_no_surface: 200 ttm_read_unlock(&vmaster->lock); 201 out_no_ttm_lock: 202 out_no_fb: 203 mutex_unlock(&dev->mode_config.mutex); 204 out_no_mode_mutex: 205 out_no_copy: 206 kfree(clips); 207 out_clips: 208 return ret; 209 } 210 211 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 212 struct drm_file *file_priv) 213 { 214 struct vmw_private *dev_priv = vmw_priv(dev); 215 struct drm_vmw_present_readback_arg *arg = 216 (struct drm_vmw_present_readback_arg *)data; 217 struct drm_vmw_fence_rep __user *user_fence_rep = 218 (struct drm_vmw_fence_rep __user *) 219 (unsigned long)arg->fence_rep; 220 struct vmw_master *vmaster = vmw_master(file_priv->master); 221 struct drm_vmw_rect __user *clips_ptr; 222 struct drm_vmw_rect *clips = NULL; 223 struct drm_mode_object *obj; 224 struct vmw_framebuffer *vfb; 225 uint32_t num_clips; 226 int ret; 227 228 num_clips = arg->num_clips; 229 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 230 231 if (unlikely(num_clips == 0)) 232 return 0; 233 234 if (clips_ptr == NULL) { 235 DRM_ERROR("Argument clips_ptr must be specified.\n"); 236 ret = -EINVAL; 237 goto out_clips; 238 } 239 240 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 241 if (clips == NULL) { 242 DRM_ERROR("Failed to allocate clip rect list.\n"); 243 ret = -ENOMEM; 244 goto out_clips; 245 } 246 247 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 248 if (ret) { 249 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 250 ret = -EFAULT; 251 goto out_no_copy; 252 } 253 254 ret = mutex_lock_interruptible(&dev->mode_config.mutex); 255 if (unlikely(ret != 0)) { 256 ret = -ERESTARTSYS; 257 goto out_no_mode_mutex; 258 } 259 260 obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB); 261 if (!obj) { 262 DRM_ERROR("Invalid framebuffer id.\n"); 263 ret = -EINVAL; 264 goto out_no_fb; 265 } 266 267 vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj)); 268 if (!vfb->dmabuf) { 269 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 270 ret = -EINVAL; 271 goto out_no_fb; 272 } 273 274 ret = ttm_read_lock(&vmaster->lock, true); 275 if (unlikely(ret != 0)) 276 goto out_no_ttm_lock; 277 278 ret = vmw_kms_readback(dev_priv, file_priv, 279 vfb, user_fence_rep, 280 clips, num_clips); 281 282 ttm_read_unlock(&vmaster->lock); 283 out_no_ttm_lock: 284 out_no_fb: 285 mutex_unlock(&dev->mode_config.mutex); 286 out_no_mode_mutex: 287 out_no_copy: 288 kfree(clips); 289 out_clips: 290 return ret; 291 } 292 293 294 /** 295 * vmw_fops_poll - wrapper around the drm_poll function 296 * 297 * @filp: See the linux fops poll documentation. 298 * @wait: See the linux fops poll documentation. 299 * 300 * Wrapper around the drm_poll function that makes sure the device is 301 * processing the fifo if drm_poll decides to wait. 302 */ 303 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait) 304 { 305 struct drm_file *file_priv = filp->private_data; 306 struct vmw_private *dev_priv = 307 vmw_priv(file_priv->minor->dev); 308 309 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 310 return drm_poll(filp, wait); 311 } 312 313 314 /** 315 * vmw_fops_read - wrapper around the drm_read function 316 * 317 * @filp: See the linux fops read documentation. 318 * @buffer: See the linux fops read documentation. 319 * @count: See the linux fops read documentation. 320 * offset: See the linux fops read documentation. 321 * 322 * Wrapper around the drm_read function that makes sure the device is 323 * processing the fifo if drm_read decides to wait. 324 */ 325 ssize_t vmw_fops_read(struct file *filp, char __user *buffer, 326 size_t count, loff_t *offset) 327 { 328 struct drm_file *file_priv = filp->private_data; 329 struct vmw_private *dev_priv = 330 vmw_priv(file_priv->minor->dev); 331 332 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); 333 return drm_read(filp, buffer, count, offset); 334 } 335