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 struct svga_3d_compat_cap {
33 SVGA3dCapsRecordHeader header;
34 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX];
35 };
36
vmw_getparam_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)37 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
38 struct drm_file *file_priv)
39 {
40 struct vmw_private *dev_priv = vmw_priv(dev);
41 struct drm_vmw_getparam_arg *param =
42 (struct drm_vmw_getparam_arg *)data;
43 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
44
45 switch (param->param) {
46 case DRM_VMW_PARAM_NUM_STREAMS:
47 param->value = vmw_overlay_num_overlays(dev_priv);
48 break;
49 case DRM_VMW_PARAM_NUM_FREE_STREAMS:
50 param->value = vmw_overlay_num_free_overlays(dev_priv);
51 break;
52 case DRM_VMW_PARAM_3D:
53 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
54 break;
55 case DRM_VMW_PARAM_HW_CAPS:
56 param->value = dev_priv->capabilities;
57 break;
58 case DRM_VMW_PARAM_FIFO_CAPS:
59 param->value = dev_priv->fifo.capabilities;
60 break;
61 case DRM_VMW_PARAM_MAX_FB_SIZE:
62 param->value = dev_priv->prim_bb_mem;
63 break;
64 case DRM_VMW_PARAM_FIFO_HW_VERSION:
65 {
66 __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
67 const struct vmw_fifo_state *fifo = &dev_priv->fifo;
68
69 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) {
70 param->value = SVGA3D_HWVERSION_WS8_B1;
71 break;
72 }
73
74 param->value =
75 ioread32(fifo_mem +
76 ((fifo->capabilities &
77 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
78 SVGA_FIFO_3D_HWVERSION_REVISED :
79 SVGA_FIFO_3D_HWVERSION));
80 break;
81 }
82 case DRM_VMW_PARAM_MAX_SURF_MEMORY:
83 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
84 !vmw_fp->gb_aware)
85 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
86 else
87 param->value = dev_priv->memory_size;
88 break;
89 case DRM_VMW_PARAM_3D_CAPS_SIZE:
90 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
91 vmw_fp->gb_aware)
92 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
93 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS)
94 param->value = sizeof(struct svga_3d_compat_cap) +
95 sizeof(uint32_t);
96 else
97 param->value = (SVGA_FIFO_3D_CAPS_LAST -
98 SVGA_FIFO_3D_CAPS + 1) *
99 sizeof(uint32_t);
100 break;
101 case DRM_VMW_PARAM_MAX_MOB_MEMORY:
102 vmw_fp->gb_aware = true;
103 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
104 break;
105 case DRM_VMW_PARAM_MAX_MOB_SIZE:
106 param->value = dev_priv->max_mob_size;
107 break;
108 default:
109 return -EINVAL;
110 }
111
112 return 0;
113 }
114
vmw_fill_compat_cap(struct vmw_private * dev_priv,void * bounce,size_t size)115 static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce,
116 size_t size)
117 {
118 struct svga_3d_compat_cap *compat_cap =
119 (struct svga_3d_compat_cap *) bounce;
120 unsigned int i;
121 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs);
122 unsigned int max_size;
123
124 if (size < pair_offset)
125 return -EINVAL;
126
127 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair);
128
129 if (max_size > SVGA3D_DEVCAP_MAX)
130 max_size = SVGA3D_DEVCAP_MAX;
131
132 compat_cap->header.length =
133 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32);
134 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS;
135
136 spin_lock(&dev_priv->cap_lock);
137 for (i = 0; i < max_size; ++i) {
138 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
139 compat_cap->pairs[i][0] = i;
140 compat_cap->pairs[i][1] = vmw_read(dev_priv, SVGA_REG_DEV_CAP);
141 }
142 spin_unlock(&dev_priv->cap_lock);
143
144 return 0;
145 }
146
147
vmw_get_cap_3d_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)148 int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
149 struct drm_file *file_priv)
150 {
151 struct drm_vmw_get_3d_cap_arg *arg =
152 (struct drm_vmw_get_3d_cap_arg *) data;
153 struct vmw_private *dev_priv = vmw_priv(dev);
154 uint32_t size;
155 __le32 __iomem *fifo_mem;
156 void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
157 void *bounce;
158 int ret;
159 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS);
160 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
161
162 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
163 DRM_ERROR("Illegal GET_3D_CAP argument.\n");
164 return -EINVAL;
165 }
166
167 if (gb_objects && vmw_fp->gb_aware)
168 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
169 else if (gb_objects)
170 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t);
171 else
172 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) *
173 sizeof(uint32_t);
174
175 if (arg->max_size < size)
176 size = arg->max_size;
177
178 bounce = vzalloc(size);
179 if (unlikely(bounce == NULL)) {
180 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
181 return -ENOMEM;
182 }
183
184 if (gb_objects && vmw_fp->gb_aware) {
185 int i, num;
186 uint32_t *bounce32 = (uint32_t *) bounce;
187
188 num = size / sizeof(uint32_t);
189 if (num > SVGA3D_DEVCAP_MAX)
190 num = SVGA3D_DEVCAP_MAX;
191
192 spin_lock(&dev_priv->cap_lock);
193 for (i = 0; i < num; ++i) {
194 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
195 *bounce32++ = vmw_read(dev_priv, SVGA_REG_DEV_CAP);
196 }
197 spin_unlock(&dev_priv->cap_lock);
198 } else if (gb_objects) {
199 ret = vmw_fill_compat_cap(dev_priv, bounce, size);
200 if (unlikely(ret != 0))
201 goto out_err;
202 } else {
203 fifo_mem = dev_priv->mmio_virt;
204 memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
205 }
206
207 ret = copy_to_user(buffer, bounce, size);
208 if (ret)
209 ret = -EFAULT;
210 out_err:
211 vfree(bounce);
212
213 if (unlikely(ret != 0))
214 DRM_ERROR("Failed to report 3D caps info.\n");
215
216 return ret;
217 }
218
vmw_present_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)219 int vmw_present_ioctl(struct drm_device *dev, void *data,
220 struct drm_file *file_priv)
221 {
222 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
223 struct vmw_private *dev_priv = vmw_priv(dev);
224 struct drm_vmw_present_arg *arg =
225 (struct drm_vmw_present_arg *)data;
226 struct vmw_surface *surface;
227 struct drm_vmw_rect __user *clips_ptr;
228 struct drm_vmw_rect *clips = NULL;
229 struct drm_framebuffer *fb;
230 struct vmw_framebuffer *vfb;
231 struct vmw_resource *res;
232 uint32_t num_clips;
233 int ret;
234
235 num_clips = arg->num_clips;
236 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
237
238 if (unlikely(num_clips == 0))
239 return 0;
240
241 if (clips_ptr == NULL) {
242 DRM_ERROR("Variable clips_ptr must be specified.\n");
243 ret = -EINVAL;
244 goto out_clips;
245 }
246
247 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
248 if (clips == NULL) {
249 DRM_ERROR("Failed to allocate clip rect list.\n");
250 ret = -ENOMEM;
251 goto out_clips;
252 }
253
254 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
255 if (ret) {
256 DRM_ERROR("Failed to copy clip rects from userspace.\n");
257 ret = -EFAULT;
258 goto out_no_copy;
259 }
260
261 drm_modeset_lock_all(dev);
262
263 fb = drm_framebuffer_lookup(dev, arg->fb_id);
264 if (!fb) {
265 DRM_ERROR("Invalid framebuffer id.\n");
266 ret = -ENOENT;
267 goto out_no_fb;
268 }
269 vfb = vmw_framebuffer_to_vfb(fb);
270
271 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
272 if (unlikely(ret != 0))
273 goto out_no_ttm_lock;
274
275 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
276 user_surface_converter,
277 &res);
278 if (ret)
279 goto out_no_surface;
280
281 surface = vmw_res_to_srf(res);
282 ret = vmw_kms_present(dev_priv, file_priv,
283 vfb, surface, arg->sid,
284 arg->dest_x, arg->dest_y,
285 clips, num_clips);
286
287 /* vmw_user_surface_lookup takes one ref so does new_fb */
288 vmw_surface_unreference(&surface);
289
290 out_no_surface:
291 ttm_read_unlock(&dev_priv->reservation_sem);
292 out_no_ttm_lock:
293 drm_framebuffer_unreference(fb);
294 out_no_fb:
295 drm_modeset_unlock_all(dev);
296 out_no_copy:
297 kfree(clips);
298 out_clips:
299 return ret;
300 }
301
vmw_present_readback_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)302 int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
303 struct drm_file *file_priv)
304 {
305 struct vmw_private *dev_priv = vmw_priv(dev);
306 struct drm_vmw_present_readback_arg *arg =
307 (struct drm_vmw_present_readback_arg *)data;
308 struct drm_vmw_fence_rep __user *user_fence_rep =
309 (struct drm_vmw_fence_rep __user *)
310 (unsigned long)arg->fence_rep;
311 struct drm_vmw_rect __user *clips_ptr;
312 struct drm_vmw_rect *clips = NULL;
313 struct drm_framebuffer *fb;
314 struct vmw_framebuffer *vfb;
315 uint32_t num_clips;
316 int ret;
317
318 num_clips = arg->num_clips;
319 clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
320
321 if (unlikely(num_clips == 0))
322 return 0;
323
324 if (clips_ptr == NULL) {
325 DRM_ERROR("Argument clips_ptr must be specified.\n");
326 ret = -EINVAL;
327 goto out_clips;
328 }
329
330 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
331 if (clips == NULL) {
332 DRM_ERROR("Failed to allocate clip rect list.\n");
333 ret = -ENOMEM;
334 goto out_clips;
335 }
336
337 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
338 if (ret) {
339 DRM_ERROR("Failed to copy clip rects from userspace.\n");
340 ret = -EFAULT;
341 goto out_no_copy;
342 }
343
344 drm_modeset_lock_all(dev);
345
346 fb = drm_framebuffer_lookup(dev, arg->fb_id);
347 if (!fb) {
348 DRM_ERROR("Invalid framebuffer id.\n");
349 ret = -ENOENT;
350 goto out_no_fb;
351 }
352
353 vfb = vmw_framebuffer_to_vfb(fb);
354 if (!vfb->dmabuf) {
355 DRM_ERROR("Framebuffer not dmabuf backed.\n");
356 ret = -EINVAL;
357 goto out_no_ttm_lock;
358 }
359
360 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
361 if (unlikely(ret != 0))
362 goto out_no_ttm_lock;
363
364 ret = vmw_kms_readback(dev_priv, file_priv,
365 vfb, user_fence_rep,
366 clips, num_clips);
367
368 ttm_read_unlock(&dev_priv->reservation_sem);
369 out_no_ttm_lock:
370 drm_framebuffer_unreference(fb);
371 out_no_fb:
372 drm_modeset_unlock_all(dev);
373 out_no_copy:
374 kfree(clips);
375 out_clips:
376 return ret;
377 }
378
379
380 /**
381 * vmw_fops_poll - wrapper around the drm_poll function
382 *
383 * @filp: See the linux fops poll documentation.
384 * @wait: See the linux fops poll documentation.
385 *
386 * Wrapper around the drm_poll function that makes sure the device is
387 * processing the fifo if drm_poll decides to wait.
388 */
vmw_fops_poll(struct file * filp,struct poll_table_struct * wait)389 unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
390 {
391 struct drm_file *file_priv = filp->private_data;
392 struct vmw_private *dev_priv =
393 vmw_priv(file_priv->minor->dev);
394
395 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
396 return drm_poll(filp, wait);
397 }
398
399
400 /**
401 * vmw_fops_read - wrapper around the drm_read function
402 *
403 * @filp: See the linux fops read documentation.
404 * @buffer: See the linux fops read documentation.
405 * @count: See the linux fops read documentation.
406 * offset: See the linux fops read documentation.
407 *
408 * Wrapper around the drm_read function that makes sure the device is
409 * processing the fifo if drm_read decides to wait.
410 */
vmw_fops_read(struct file * filp,char __user * buffer,size_t count,loff_t * offset)411 ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
412 size_t count, loff_t *offset)
413 {
414 struct drm_file *file_priv = filp->private_data;
415 struct vmw_private *dev_priv =
416 vmw_priv(file_priv->minor->dev);
417
418 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
419 return drm_read(filp, buffer, count, offset);
420 }
421