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 case DRM_VMW_PARAM_MAX_SURF_MEMORY: 72 param->value = dev_priv->memory_size; 73 break; 74 default: 75 DRM_ERROR("Illegal vmwgfx get param request: %d\n", 76 param->param); 77 return -EINVAL; 78 } 79 80 return 0; 81 } 82 83 84 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data, 85 struct drm_file *file_priv) 86 { 87 struct drm_vmw_get_3d_cap_arg *arg = 88 (struct drm_vmw_get_3d_cap_arg *) data; 89 struct vmw_private *dev_priv = vmw_priv(dev); 90 uint32_t size; 91 __le32 __iomem *fifo_mem; 92 void __user *buffer = (void __user *)((unsigned long)(arg->buffer)); 93 void *bounce; 94 int ret; 95 96 if (unlikely(arg->pad64 != 0)) { 97 DRM_ERROR("Illegal GET_3D_CAP argument.\n"); 98 return -EINVAL; 99 } 100 101 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) << 2; 102 103 if (arg->max_size < size) 104 size = arg->max_size; 105 106 bounce = vmalloc(size); 107 if (unlikely(bounce == NULL)) { 108 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n"); 109 return -ENOMEM; 110 } 111 112 fifo_mem = dev_priv->mmio_virt; 113 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size); 114 115 ret = copy_to_user(buffer, bounce, size); 116 if (ret) 117 ret = -EFAULT; 118 vfree(bounce); 119 120 if (unlikely(ret != 0)) 121 DRM_ERROR("Failed to report 3D caps info.\n"); 122 123 return ret; 124 } 125 126 int vmw_present_ioctl(struct drm_device *dev, void *data, 127 struct drm_file *file_priv) 128 { 129 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; 130 struct vmw_private *dev_priv = vmw_priv(dev); 131 struct drm_vmw_present_arg *arg = 132 (struct drm_vmw_present_arg *)data; 133 struct vmw_surface *surface; 134 struct vmw_master *vmaster = vmw_master(file_priv->master); 135 struct drm_vmw_rect __user *clips_ptr; 136 struct drm_vmw_rect *clips = NULL; 137 struct drm_framebuffer *fb; 138 struct vmw_framebuffer *vfb; 139 struct vmw_resource *res; 140 uint32_t num_clips; 141 int ret; 142 143 num_clips = arg->num_clips; 144 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 145 146 if (unlikely(num_clips == 0)) 147 return 0; 148 149 if (clips_ptr == NULL) { 150 DRM_ERROR("Variable clips_ptr must be specified.\n"); 151 ret = -EINVAL; 152 goto out_clips; 153 } 154 155 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 156 if (clips == NULL) { 157 DRM_ERROR("Failed to allocate clip rect list.\n"); 158 ret = -ENOMEM; 159 goto out_clips; 160 } 161 162 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 163 if (ret) { 164 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 165 ret = -EFAULT; 166 goto out_no_copy; 167 } 168 169 drm_modeset_lock_all(dev); 170 171 fb = drm_framebuffer_lookup(dev, arg->fb_id); 172 if (!fb) { 173 DRM_ERROR("Invalid framebuffer id.\n"); 174 ret = -ENOENT; 175 goto out_no_fb; 176 } 177 vfb = vmw_framebuffer_to_vfb(fb); 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_resource_lookup_handle(dev_priv, tfile, arg->sid, 184 user_surface_converter, 185 &res); 186 if (ret) 187 goto out_no_surface; 188 189 surface = vmw_res_to_srf(res); 190 ret = vmw_kms_present(dev_priv, file_priv, 191 vfb, surface, arg->sid, 192 arg->dest_x, arg->dest_y, 193 clips, num_clips); 194 195 /* vmw_user_surface_lookup takes one ref so does new_fb */ 196 vmw_surface_unreference(&surface); 197 198 out_no_surface: 199 ttm_read_unlock(&vmaster->lock); 200 out_no_ttm_lock: 201 drm_framebuffer_unreference(fb); 202 out_no_fb: 203 drm_modeset_unlock_all(dev); 204 out_no_copy: 205 kfree(clips); 206 out_clips: 207 return ret; 208 } 209 210 int vmw_present_readback_ioctl(struct drm_device *dev, void *data, 211 struct drm_file *file_priv) 212 { 213 struct vmw_private *dev_priv = vmw_priv(dev); 214 struct drm_vmw_present_readback_arg *arg = 215 (struct drm_vmw_present_readback_arg *)data; 216 struct drm_vmw_fence_rep __user *user_fence_rep = 217 (struct drm_vmw_fence_rep __user *) 218 (unsigned long)arg->fence_rep; 219 struct vmw_master *vmaster = vmw_master(file_priv->master); 220 struct drm_vmw_rect __user *clips_ptr; 221 struct drm_vmw_rect *clips = NULL; 222 struct drm_framebuffer *fb; 223 struct vmw_framebuffer *vfb; 224 uint32_t num_clips; 225 int ret; 226 227 num_clips = arg->num_clips; 228 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr; 229 230 if (unlikely(num_clips == 0)) 231 return 0; 232 233 if (clips_ptr == NULL) { 234 DRM_ERROR("Argument clips_ptr must be specified.\n"); 235 ret = -EINVAL; 236 goto out_clips; 237 } 238 239 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL); 240 if (clips == NULL) { 241 DRM_ERROR("Failed to allocate clip rect list.\n"); 242 ret = -ENOMEM; 243 goto out_clips; 244 } 245 246 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); 247 if (ret) { 248 DRM_ERROR("Failed to copy clip rects from userspace.\n"); 249 ret = -EFAULT; 250 goto out_no_copy; 251 } 252 253 drm_modeset_lock_all(dev); 254 255 fb = drm_framebuffer_lookup(dev, arg->fb_id); 256 if (!fb) { 257 DRM_ERROR("Invalid framebuffer id.\n"); 258 ret = -ENOENT; 259 goto out_no_fb; 260 } 261 262 vfb = vmw_framebuffer_to_vfb(fb); 263 if (!vfb->dmabuf) { 264 DRM_ERROR("Framebuffer not dmabuf backed.\n"); 265 ret = -EINVAL; 266 goto out_no_ttm_lock; 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 drm_framebuffer_unreference(fb); 280 out_no_fb: 281 drm_modeset_unlock_all(dev); 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