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1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/**************************************************************************
3 *
4 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
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#include "device_include/svga3d_caps.h"
32
33struct svga_3d_compat_cap {
34 SVGA3dCapsRecordHeader header;
35 SVGA3dCapPair pairs[SVGA3D_DEVCAP_MAX];
36};
37
38int vmw_getparam_ioctl(struct drm_device *dev, void *data,
39 struct drm_file *file_priv)
40{
41 struct vmw_private *dev_priv = vmw_priv(dev);
42 struct drm_vmw_getparam_arg *param =
43 (struct drm_vmw_getparam_arg *)data;
44 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
45
46 switch (param->param) {
47 case DRM_VMW_PARAM_NUM_STREAMS:
48 param->value = vmw_overlay_num_overlays(dev_priv);
49 break;
50 case DRM_VMW_PARAM_NUM_FREE_STREAMS:
51 param->value = vmw_overlay_num_free_overlays(dev_priv);
52 break;
53 case DRM_VMW_PARAM_3D:
54 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
55 break;
56 case DRM_VMW_PARAM_HW_CAPS:
57 param->value = dev_priv->capabilities;
58 break;
59 case DRM_VMW_PARAM_HW_CAPS2:
60 param->value = dev_priv->capabilities2;
61 break;
62 case DRM_VMW_PARAM_FIFO_CAPS:
63 param->value = dev_priv->fifo.capabilities;
64 break;
65 case DRM_VMW_PARAM_MAX_FB_SIZE:
66 param->value = dev_priv->prim_bb_mem;
67 break;
68 case DRM_VMW_PARAM_FIFO_HW_VERSION:
69 {
70 u32 *fifo_mem = dev_priv->mmio_virt;
71 const struct vmw_fifo_state *fifo = &dev_priv->fifo;
72
73 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) {
74 param->value = SVGA3D_HWVERSION_WS8_B1;
75 break;
76 }
77
78 param->value =
79 vmw_mmio_read(fifo_mem +
80 ((fifo->capabilities &
81 SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
82 SVGA_FIFO_3D_HWVERSION_REVISED :
83 SVGA_FIFO_3D_HWVERSION));
84 break;
85 }
86 case DRM_VMW_PARAM_MAX_SURF_MEMORY:
87 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
88 !vmw_fp->gb_aware)
89 param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
90 else
91 param->value = dev_priv->memory_size;
92 break;
93 case DRM_VMW_PARAM_3D_CAPS_SIZE:
94 if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
95 vmw_fp->gb_aware)
96 param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
97 else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS)
98 param->value = sizeof(struct svga_3d_compat_cap) +
99 sizeof(uint32_t);
100 else
101 param->value = (SVGA_FIFO_3D_CAPS_LAST -
102 SVGA_FIFO_3D_CAPS + 1) *
103 sizeof(uint32_t);
104 break;
105 case DRM_VMW_PARAM_MAX_MOB_MEMORY:
106 vmw_fp->gb_aware = true;
107 param->value = dev_priv->max_mob_pages * PAGE_SIZE;
108 break;
109 case DRM_VMW_PARAM_MAX_MOB_SIZE:
110 param->value = dev_priv->max_mob_size;
111 break;
112 case DRM_VMW_PARAM_SCREEN_TARGET:
113 param->value =
114 (dev_priv->active_display_unit == vmw_du_screen_target);
115 break;
116 case DRM_VMW_PARAM_DX:
117 param->value = dev_priv->has_dx;
118 break;
119 case DRM_VMW_PARAM_SM4_1:
120 param->value = dev_priv->has_sm4_1;
121 break;
122 default:
123 return -EINVAL;
124 }
125
126 return 0;
127}
128
129static u32 vmw_mask_multisample(unsigned int cap, u32 fmt_value)
130{
131 /*
132 * A version of user-space exists which use MULTISAMPLE_MASKABLESAMPLES
133 * to check the sample count supported by virtual device. Since there
134 * never was support for multisample count for backing MOB return 0.
135 */
136 if (cap == SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES)
137 return 0;
138
139 return fmt_value;
140}
141
142static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce,
143 size_t size)
144{
145 struct svga_3d_compat_cap *compat_cap =
146 (struct svga_3d_compat_cap *) bounce;
147 unsigned int i;
148 size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs);
149 unsigned int max_size;
150
151 if (size < pair_offset)
152 return -EINVAL;
153
154 max_size = (size - pair_offset) / sizeof(SVGA3dCapPair);
155
156 if (max_size > SVGA3D_DEVCAP_MAX)
157 max_size = SVGA3D_DEVCAP_MAX;
158
159 compat_cap->header.length =
160 (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32);
161 compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS;
162
163 spin_lock(&dev_priv->cap_lock);
164 for (i = 0; i < max_size; ++i) {
165 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
166 compat_cap->pairs[i][0] = i;
167 compat_cap->pairs[i][1] = vmw_mask_multisample
168 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
169 }
170 spin_unlock(&dev_priv->cap_lock);
171
172 return 0;
173}
174
175
176int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
177 struct drm_file *file_priv)
178{
179 struct drm_vmw_get_3d_cap_arg *arg =
180 (struct drm_vmw_get_3d_cap_arg *) data;
181 struct vmw_private *dev_priv = vmw_priv(dev);
182 uint32_t size;
183 u32 *fifo_mem;
184 void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
185 void *bounce;
186 int ret;
187 bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS);
188 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
189
190 if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
191 VMW_DEBUG_USER("Illegal GET_3D_CAP argument.\n");
192 return -EINVAL;
193 }
194
195 if (gb_objects && vmw_fp->gb_aware)
196 size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
197 else if (gb_objects)
198 size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t);
199 else
200 size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) *
201 sizeof(uint32_t);
202
203 if (arg->max_size < size)
204 size = arg->max_size;
205
206 bounce = vzalloc(size);
207 if (unlikely(bounce == NULL)) {
208 DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
209 return -ENOMEM;
210 }
211
212 if (gb_objects && vmw_fp->gb_aware) {
213 int i, num;
214 uint32_t *bounce32 = (uint32_t *) bounce;
215
216 num = size / sizeof(uint32_t);
217 if (num > SVGA3D_DEVCAP_MAX)
218 num = SVGA3D_DEVCAP_MAX;
219
220 spin_lock(&dev_priv->cap_lock);
221 for (i = 0; i < num; ++i) {
222 vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
223 *bounce32++ = vmw_mask_multisample
224 (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
225 }
226 spin_unlock(&dev_priv->cap_lock);
227 } else if (gb_objects) {
228 ret = vmw_fill_compat_cap(dev_priv, bounce, size);
229 if (unlikely(ret != 0))
230 goto out_err;
231 } else {
232 fifo_mem = dev_priv->mmio_virt;
233 memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
234 }
235
236 ret = copy_to_user(buffer, bounce, size);
237 if (ret)
238 ret = -EFAULT;
239out_err:
240 vfree(bounce);
241
242 if (unlikely(ret != 0))
243 DRM_ERROR("Failed to report 3D caps info.\n");
244
245 return ret;
246}
247
248int vmw_present_ioctl(struct drm_device *dev, void *data,
249 struct drm_file *file_priv)
250{
251 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
252 struct vmw_private *dev_priv = vmw_priv(dev);
253 struct drm_vmw_present_arg *arg =
254 (struct drm_vmw_present_arg *)data;
255 struct vmw_surface *surface;
256 struct drm_vmw_rect __user *clips_ptr;
257 struct drm_vmw_rect *clips = NULL;
258 struct drm_framebuffer *fb;
259 struct vmw_framebuffer *vfb;
260 struct vmw_resource *res;
261 uint32_t num_clips;
262 int ret;
263
264 num_clips = arg->num_clips;
265 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
266
267 if (unlikely(num_clips == 0))
268 return 0;
269
270 if (clips_ptr == NULL) {
271 VMW_DEBUG_USER("Variable clips_ptr must be specified.\n");
272 ret = -EINVAL;
273 goto out_clips;
274 }
275
276 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
277 if (clips == NULL) {
278 DRM_ERROR("Failed to allocate clip rect list.\n");
279 ret = -ENOMEM;
280 goto out_clips;
281 }
282
283 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
284 if (ret) {
285 DRM_ERROR("Failed to copy clip rects from userspace.\n");
286 ret = -EFAULT;
287 goto out_no_copy;
288 }
289
290 drm_modeset_lock_all(dev);
291
292 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
293 if (!fb) {
294 VMW_DEBUG_USER("Invalid framebuffer id.\n");
295 ret = -ENOENT;
296 goto out_no_fb;
297 }
298 vfb = vmw_framebuffer_to_vfb(fb);
299
300 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
301 if (unlikely(ret != 0))
302 goto out_no_ttm_lock;
303
304 ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
305 user_surface_converter,
306 &res);
307 if (ret)
308 goto out_no_surface;
309
310 surface = vmw_res_to_srf(res);
311 ret = vmw_kms_present(dev_priv, file_priv,
312 vfb, surface, arg->sid,
313 arg->dest_x, arg->dest_y,
314 clips, num_clips);
315
316 /* vmw_user_surface_lookup takes one ref so does new_fb */
317 vmw_surface_unreference(&surface);
318
319out_no_surface:
320 ttm_read_unlock(&dev_priv->reservation_sem);
321out_no_ttm_lock:
322 drm_framebuffer_put(fb);
323out_no_fb:
324 drm_modeset_unlock_all(dev);
325out_no_copy:
326 kfree(clips);
327out_clips:
328 return ret;
329}
330
331int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
332 struct drm_file *file_priv)
333{
334 struct vmw_private *dev_priv = vmw_priv(dev);
335 struct drm_vmw_present_readback_arg *arg =
336 (struct drm_vmw_present_readback_arg *)data;
337 struct drm_vmw_fence_rep __user *user_fence_rep =
338 (struct drm_vmw_fence_rep __user *)
339 (unsigned long)arg->fence_rep;
340 struct drm_vmw_rect __user *clips_ptr;
341 struct drm_vmw_rect *clips = NULL;
342 struct drm_framebuffer *fb;
343 struct vmw_framebuffer *vfb;
344 uint32_t num_clips;
345 int ret;
346
347 num_clips = arg->num_clips;
348 clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
349
350 if (unlikely(num_clips == 0))
351 return 0;
352
353 if (clips_ptr == NULL) {
354 VMW_DEBUG_USER("Argument clips_ptr must be specified.\n");
355 ret = -EINVAL;
356 goto out_clips;
357 }
358
359 clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
360 if (clips == NULL) {
361 DRM_ERROR("Failed to allocate clip rect list.\n");
362 ret = -ENOMEM;
363 goto out_clips;
364 }
365
366 ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
367 if (ret) {
368 DRM_ERROR("Failed to copy clip rects from userspace.\n");
369 ret = -EFAULT;
370 goto out_no_copy;
371 }
372
373 drm_modeset_lock_all(dev);
374
375 fb = drm_framebuffer_lookup(dev, file_priv, arg->fb_id);
376 if (!fb) {
377 VMW_DEBUG_USER("Invalid framebuffer id.\n");
378 ret = -ENOENT;
379 goto out_no_fb;
380 }
381
382 vfb = vmw_framebuffer_to_vfb(fb);
383 if (!vfb->bo) {
384 VMW_DEBUG_USER("Framebuffer not buffer backed.\n");
385 ret = -EINVAL;
386 goto out_no_ttm_lock;
387 }
388
389 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
390 if (unlikely(ret != 0))
391 goto out_no_ttm_lock;
392
393 ret = vmw_kms_readback(dev_priv, file_priv,
394 vfb, user_fence_rep,
395 clips, num_clips);
396
397 ttm_read_unlock(&dev_priv->reservation_sem);
398out_no_ttm_lock:
399 drm_framebuffer_put(fb);
400out_no_fb:
401 drm_modeset_unlock_all(dev);
402out_no_copy:
403 kfree(clips);
404out_clips:
405 return ret;
406}
407
408
409/**
410 * vmw_fops_poll - wrapper around the drm_poll function
411 *
412 * @filp: See the linux fops poll documentation.
413 * @wait: See the linux fops poll documentation.
414 *
415 * Wrapper around the drm_poll function that makes sure the device is
416 * processing the fifo if drm_poll decides to wait.
417 */
418__poll_t vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
419{
420 struct drm_file *file_priv = filp->private_data;
421 struct vmw_private *dev_priv =
422 vmw_priv(file_priv->minor->dev);
423
424 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
425 return drm_poll(filp, wait);
426}
427
428
429/**
430 * vmw_fops_read - wrapper around the drm_read function
431 *
432 * @filp: See the linux fops read documentation.
433 * @buffer: See the linux fops read documentation.
434 * @count: See the linux fops read documentation.
435 * offset: See the linux fops read documentation.
436 *
437 * Wrapper around the drm_read function that makes sure the device is
438 * processing the fifo if drm_read decides to wait.
439 */
440ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
441 size_t count, loff_t *offset)
442{
443 struct drm_file *file_priv = filp->private_data;
444 struct vmw_private *dev_priv =
445 vmw_priv(file_priv->minor->dev);
446
447 vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
448 return drm_read(filp, buffer, count, offset);
449}
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
31int vmw_getparam_ioctl(struct drm_device *dev, void *data,
32 struct drm_file *file_priv)
33{
34 struct vmw_private *dev_priv = vmw_priv(dev);
35 struct drm_vmw_getparam_arg *param =
36 (struct drm_vmw_getparam_arg *)data;
37
38 switch (param->param) {
39 case DRM_VMW_PARAM_NUM_STREAMS:
40 param->value = vmw_overlay_num_overlays(dev_priv);
41 break;
42 case DRM_VMW_PARAM_NUM_FREE_STREAMS:
43 param->value = vmw_overlay_num_free_overlays(dev_priv);
44 break;
45 case DRM_VMW_PARAM_3D:
46 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
47 break;
48 case DRM_VMW_PARAM_FIFO_OFFSET:
49 param->value = dev_priv->mmio_start;
50 break;
51 case DRM_VMW_PARAM_HW_CAPS:
52 param->value = dev_priv->capabilities;
53 break;
54 case DRM_VMW_PARAM_FIFO_CAPS:
55 param->value = dev_priv->fifo.capabilities;
56 break;
57 case DRM_VMW_PARAM_MAX_FB_SIZE:
58 param->value = dev_priv->vram_size;
59 break;
60 default:
61 DRM_ERROR("Illegal vmwgfx get param request: %d\n",
62 param->param);
63 return -EINVAL;
64 }
65
66 return 0;
67}
68
69int vmw_fifo_debug_ioctl(struct drm_device *dev, void *data,
70 struct drm_file *file_priv)
71{
72 struct vmw_private *dev_priv = vmw_priv(dev);
73 struct vmw_fifo_state *fifo_state = &dev_priv->fifo;
74 struct drm_vmw_fifo_debug_arg *arg =
75 (struct drm_vmw_fifo_debug_arg *)data;
76 __le32 __user *buffer = (__le32 __user *)
77 (unsigned long)arg->debug_buffer;
78
79 if (unlikely(fifo_state->last_buffer == NULL))
80 return -EINVAL;
81
82 if (arg->debug_buffer_size < fifo_state->last_data_size) {
83 arg->used_size = arg->debug_buffer_size;
84 arg->did_not_fit = 1;
85 } else {
86 arg->used_size = fifo_state->last_data_size;
87 arg->did_not_fit = 0;
88 }
89 return copy_to_user(buffer, fifo_state->last_buffer, arg->used_size);
90}