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
vmw_getparam_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)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
vmw_get_cap_3d_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)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 vfree(bounce);
114
115 if (unlikely(ret != 0))
116 DRM_ERROR("Failed to report 3D caps info.\n");
117
118 return ret;
119 }
120
vmw_present_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)121 int vmw_present_ioctl(struct drm_device *dev, void *data,
122 struct drm_file *file_priv)
123 {
124 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
125 struct vmw_private *dev_priv = vmw_priv(dev);
126 struct drm_vmw_present_arg *arg =
127 (struct drm_vmw_present_arg *)data;
128 struct vmw_surface *surface;
129 struct vmw_master *vmaster = vmw_master(file_priv->master);
130 struct drm_vmw_rect __user *clips_ptr;
131 struct drm_vmw_rect *clips = NULL;
132 struct drm_mode_object *obj;
133 struct vmw_framebuffer *vfb;
134 uint32_t num_clips;
135 int ret;
136
137 num_clips = arg->num_clips;
138 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
139
140 if (unlikely(num_clips == 0))
141 return 0;
142
143 if (clips_ptr == NULL) {
144 DRM_ERROR("Variable clips_ptr must be specified.\n");
145 ret = -EINVAL;
146 goto out_clips;
147 }
148
149 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
150 if (clips == NULL) {
151 DRM_ERROR("Failed to allocate clip rect list.\n");
152 ret = -ENOMEM;
153 goto out_clips;
154 }
155
156 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
157 if (ret) {
158 DRM_ERROR("Failed to copy clip rects from userspace.\n");
159 ret = -EFAULT;
160 goto out_no_copy;
161 }
162
163 ret = mutex_lock_interruptible(&dev->mode_config.mutex);
164 if (unlikely(ret != 0)) {
165 ret = -ERESTARTSYS;
166 goto out_no_mode_mutex;
167 }
168
169 obj = drm_mode_object_find(dev, arg->fb_id, DRM_MODE_OBJECT_FB);
170 if (!obj) {
171 DRM_ERROR("Invalid framebuffer id.\n");
172 ret = -EINVAL;
173 goto out_no_fb;
174 }
175 vfb = vmw_framebuffer_to_vfb(obj_to_fb(obj));
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
vmw_present_readback_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)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 = kcalloc(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 */
vmw_fops_poll(struct file * filp,struct poll_table_struct * wait)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 */
vmw_fops_read(struct file * filp,char __user * buffer,size_t count,loff_t * offset)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