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