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
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 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
vmw_present_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)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
vmw_present_readback_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)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 */
vmw_fops_poll(struct file * filp,struct poll_table_struct * wait)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 */
vmw_fops_read(struct file * filp,char __user * buffer,size_t count,loff_t * offset)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