source: src/linux/universal/linux-4.9/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c @ 31859

Last change on this file since 31859 was 31859, checked in by brainslayer, 2 months ago

kernel update

File size: 12.2 KB
Line 
1/**************************************************************************
2 *
3 * Copyright © 2009-2015 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#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_FIFO_CAPS:
60                param->value = dev_priv->fifo.capabilities;
61                break;
62        case DRM_VMW_PARAM_MAX_FB_SIZE:
63                param->value = dev_priv->prim_bb_mem;
64                break;
65        case DRM_VMW_PARAM_FIFO_HW_VERSION:
66        {
67                u32 *fifo_mem = dev_priv->mmio_virt;
68                const struct vmw_fifo_state *fifo = &dev_priv->fifo;
69
70                if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) {
71                        param->value = SVGA3D_HWVERSION_WS8_B1;
72                        break;
73                }
74
75                param->value =
76                        vmw_mmio_read(fifo_mem +
77                                      ((fifo->capabilities &
78                                        SVGA_FIFO_CAP_3D_HWVERSION_REVISED) ?
79                                       SVGA_FIFO_3D_HWVERSION_REVISED :
80                                       SVGA_FIFO_3D_HWVERSION));
81                break;
82        }
83        case DRM_VMW_PARAM_MAX_SURF_MEMORY:
84                if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
85                    !vmw_fp->gb_aware)
86                        param->value = dev_priv->max_mob_pages * PAGE_SIZE / 2;
87                else
88                        param->value = dev_priv->memory_size;
89                break;
90        case DRM_VMW_PARAM_3D_CAPS_SIZE:
91                if ((dev_priv->capabilities & SVGA_CAP_GBOBJECTS) &&
92                    vmw_fp->gb_aware)
93                        param->value = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
94                else if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS)
95                        param->value = sizeof(struct svga_3d_compat_cap) +
96                                sizeof(uint32_t);
97                else
98                        param->value = (SVGA_FIFO_3D_CAPS_LAST -
99                                        SVGA_FIFO_3D_CAPS + 1) *
100                                sizeof(uint32_t);
101                break;
102        case DRM_VMW_PARAM_MAX_MOB_MEMORY:
103                vmw_fp->gb_aware = true;
104                param->value = dev_priv->max_mob_pages * PAGE_SIZE;
105                break;
106        case DRM_VMW_PARAM_MAX_MOB_SIZE:
107                param->value = dev_priv->max_mob_size;
108                break;
109        case DRM_VMW_PARAM_SCREEN_TARGET:
110                param->value =
111                        (dev_priv->active_display_unit == vmw_du_screen_target);
112                break;
113        case DRM_VMW_PARAM_DX:
114                param->value = dev_priv->has_dx;
115                break;
116        default:
117                return -EINVAL;
118        }
119
120        return 0;
121}
122
123static u32 vmw_mask_multisample(unsigned int cap, u32 fmt_value)
124{
125        /* If the header is updated, update the format test as well! */
126        BUILD_BUG_ON(SVGA3D_DEVCAP_DXFMT_BC5_UNORM + 1 != SVGA3D_DEVCAP_MAX);
127
128        if (cap >= SVGA3D_DEVCAP_DXFMT_X8R8G8B8 &&
129            cap <= SVGA3D_DEVCAP_DXFMT_BC5_UNORM)
130                fmt_value &= ~(SVGADX_DXFMT_MULTISAMPLE_2 |
131                               SVGADX_DXFMT_MULTISAMPLE_4 |
132                               SVGADX_DXFMT_MULTISAMPLE_8);
133        else if (cap == SVGA3D_DEVCAP_MULTISAMPLE_MASKABLESAMPLES)
134                return 0;
135
136        return fmt_value;
137}
138
139static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce,
140                               size_t size)
141{
142        struct svga_3d_compat_cap *compat_cap =
143                (struct svga_3d_compat_cap *) bounce;
144        unsigned int i;
145        size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs);
146        unsigned int max_size;
147
148        if (size < pair_offset)
149                return -EINVAL;
150
151        max_size = (size - pair_offset) / sizeof(SVGA3dCapPair);
152
153        if (max_size > SVGA3D_DEVCAP_MAX)
154                max_size = SVGA3D_DEVCAP_MAX;
155
156        compat_cap->header.length =
157                (pair_offset + max_size * sizeof(SVGA3dCapPair)) / sizeof(u32);
158        compat_cap->header.type = SVGA3DCAPS_RECORD_DEVCAPS;
159
160        spin_lock(&dev_priv->cap_lock);
161        for (i = 0; i < max_size; ++i) {
162                vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
163                compat_cap->pairs[i][0] = i;
164                compat_cap->pairs[i][1] = vmw_mask_multisample
165                        (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
166        }
167        spin_unlock(&dev_priv->cap_lock);
168
169        return 0;
170}
171
172
173int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
174                         struct drm_file *file_priv)
175{
176        struct drm_vmw_get_3d_cap_arg *arg =
177                (struct drm_vmw_get_3d_cap_arg *) data;
178        struct vmw_private *dev_priv = vmw_priv(dev);
179        uint32_t size;
180        u32 *fifo_mem;
181        void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
182        void *bounce;
183        int ret;
184        bool gb_objects = !!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS);
185        struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
186
187        if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
188                DRM_ERROR("Illegal GET_3D_CAP argument.\n");
189                return -EINVAL;
190        }
191
192        if (gb_objects && vmw_fp->gb_aware)
193                size = SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
194        else if (gb_objects)
195                size = sizeof(struct svga_3d_compat_cap) + sizeof(uint32_t);
196        else
197                size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) *
198                        sizeof(uint32_t);
199
200        if (arg->max_size < size)
201                size = arg->max_size;
202
203        bounce = vzalloc(size);
204        if (unlikely(bounce == NULL)) {
205                DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
206                return -ENOMEM;
207        }
208
209        if (gb_objects && vmw_fp->gb_aware) {
210                int i, num;
211                uint32_t *bounce32 = (uint32_t *) bounce;
212
213                num = size / sizeof(uint32_t);
214                if (num > SVGA3D_DEVCAP_MAX)
215                        num = SVGA3D_DEVCAP_MAX;
216
217                spin_lock(&dev_priv->cap_lock);
218                for (i = 0; i < num; ++i) {
219                        vmw_write(dev_priv, SVGA_REG_DEV_CAP, i);
220                        *bounce32++ = vmw_mask_multisample
221                                (i, vmw_read(dev_priv, SVGA_REG_DEV_CAP));
222                }
223                spin_unlock(&dev_priv->cap_lock);
224        } else if (gb_objects) {
225                ret = vmw_fill_compat_cap(dev_priv, bounce, size);
226                if (unlikely(ret != 0))
227                        goto out_err;
228        } else {
229                fifo_mem = dev_priv->mmio_virt;
230                memcpy(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
231        }
232
233        ret = copy_to_user(buffer, bounce, size);
234        if (ret)
235                ret = -EFAULT;
236out_err:
237        vfree(bounce);
238
239        if (unlikely(ret != 0))
240                DRM_ERROR("Failed to report 3D caps info.\n");
241
242        return ret;
243}
244
245int vmw_present_ioctl(struct drm_device *dev, void *data,
246                      struct drm_file *file_priv)
247{
248        struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
249        struct vmw_private *dev_priv = vmw_priv(dev);
250        struct drm_vmw_present_arg *arg =
251                (struct drm_vmw_present_arg *)data;
252        struct vmw_surface *surface;
253        struct drm_vmw_rect __user *clips_ptr;
254        struct drm_vmw_rect *clips = NULL;
255        struct drm_framebuffer *fb;
256        struct vmw_framebuffer *vfb;
257        struct vmw_resource *res;
258        uint32_t num_clips;
259        int ret;
260
261        num_clips = arg->num_clips;
262        clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
263
264        if (unlikely(num_clips == 0))
265                return 0;
266
267        if (clips_ptr == NULL) {
268                DRM_ERROR("Variable clips_ptr must be specified.\n");
269                ret = -EINVAL;
270                goto out_clips;
271        }
272
273        clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
274        if (clips == NULL) {
275                DRM_ERROR("Failed to allocate clip rect list.\n");
276                ret = -ENOMEM;
277                goto out_clips;
278        }
279
280        ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
281        if (ret) {
282                DRM_ERROR("Failed to copy clip rects from userspace.\n");
283                ret = -EFAULT;
284                goto out_no_copy;
285        }
286
287        drm_modeset_lock_all(dev);
288
289        fb = drm_framebuffer_lookup(dev, arg->fb_id);
290        if (!fb) {
291                DRM_ERROR("Invalid framebuffer id.\n");
292                ret = -ENOENT;
293                goto out_no_fb;
294        }
295        vfb = vmw_framebuffer_to_vfb(fb);
296
297        ret = ttm_read_lock(&dev_priv->reservation_sem, true);
298        if (unlikely(ret != 0))
299                goto out_no_ttm_lock;
300
301        ret = vmw_user_resource_lookup_handle(dev_priv, tfile, arg->sid,
302                                              user_surface_converter,
303                                              &res);
304        if (ret)
305                goto out_no_surface;
306
307        surface = vmw_res_to_srf(res);
308        ret = vmw_kms_present(dev_priv, file_priv,
309                              vfb, surface, arg->sid,
310                              arg->dest_x, arg->dest_y,
311                              clips, num_clips);
312
313        /* vmw_user_surface_lookup takes one ref so does new_fb */
314        vmw_surface_unreference(&surface);
315
316out_no_surface:
317        ttm_read_unlock(&dev_priv->reservation_sem);
318out_no_ttm_lock:
319        drm_framebuffer_unreference(fb);
320out_no_fb:
321        drm_modeset_unlock_all(dev);
322out_no_copy:
323        kfree(clips);
324out_clips:
325        return ret;
326}
327
328int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
329                               struct drm_file *file_priv)
330{
331        struct vmw_private *dev_priv = vmw_priv(dev);
332        struct drm_vmw_present_readback_arg *arg =
333                (struct drm_vmw_present_readback_arg *)data;
334        struct drm_vmw_fence_rep __user *user_fence_rep =
335                (struct drm_vmw_fence_rep __user *)
336                (unsigned long)arg->fence_rep;
337        struct drm_vmw_rect __user *clips_ptr;
338        struct drm_vmw_rect *clips = NULL;
339        struct drm_framebuffer *fb;
340        struct vmw_framebuffer *vfb;
341        uint32_t num_clips;
342        int ret;
343
344        num_clips = arg->num_clips;
345        clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
346
347        if (unlikely(num_clips == 0))
348                return 0;
349
350        if (clips_ptr == NULL) {
351                DRM_ERROR("Argument clips_ptr must be specified.\n");
352                ret = -EINVAL;
353                goto out_clips;
354        }
355
356        clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
357        if (clips == NULL) {
358                DRM_ERROR("Failed to allocate clip rect list.\n");
359                ret = -ENOMEM;
360                goto out_clips;
361        }
362
363        ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips));
364        if (ret) {
365                DRM_ERROR("Failed to copy clip rects from userspace.\n");
366                ret = -EFAULT;
367                goto out_no_copy;
368        }
369
370        drm_modeset_lock_all(dev);
371
372        fb = drm_framebuffer_lookup(dev, arg->fb_id);
373        if (!fb) {
374                DRM_ERROR("Invalid framebuffer id.\n");
375                ret = -ENOENT;
376                goto out_no_fb;
377        }
378
379        vfb = vmw_framebuffer_to_vfb(fb);
380        if (!vfb->dmabuf) {
381                DRM_ERROR("Framebuffer not dmabuf backed.\n");
382                ret = -EINVAL;
383                goto out_no_ttm_lock;
384        }
385
386        ret = ttm_read_lock(&dev_priv->reservation_sem, true);
387        if (unlikely(ret != 0))
388                goto out_no_ttm_lock;
389
390        ret = vmw_kms_readback(dev_priv, file_priv,
391                               vfb, user_fence_rep,
392                               clips, num_clips);
393
394        ttm_read_unlock(&dev_priv->reservation_sem);
395out_no_ttm_lock:
396        drm_framebuffer_unreference(fb);
397out_no_fb:
398        drm_modeset_unlock_all(dev);
399out_no_copy:
400        kfree(clips);
401out_clips:
402        return ret;
403}
404
405
406/**
407 * vmw_fops_poll - wrapper around the drm_poll function
408 *
409 * @filp: See the linux fops poll documentation.
410 * @wait: See the linux fops poll documentation.
411 *
412 * Wrapper around the drm_poll function that makes sure the device is
413 * processing the fifo if drm_poll decides to wait.
414 */
415unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
416{
417        struct drm_file *file_priv = filp->private_data;
418        struct vmw_private *dev_priv =
419                vmw_priv(file_priv->minor->dev);
420
421        vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
422        return drm_poll(filp, wait);
423}
424
425
426/**
427 * vmw_fops_read - wrapper around the drm_read function
428 *
429 * @filp: See the linux fops read documentation.
430 * @buffer: See the linux fops read documentation.
431 * @count: See the linux fops read documentation.
432 * offset: See the linux fops read documentation.
433 *
434 * Wrapper around the drm_read function that makes sure the device is
435 * processing the fifo if drm_read decides to wait.
436 */
437ssize_t vmw_fops_read(struct file *filp, char __user *buffer,
438                      size_t count, loff_t *offset)
439{
440        struct drm_file *file_priv = filp->private_data;
441        struct vmw_private *dev_priv =
442                vmw_priv(file_priv->minor->dev);
443
444        vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
445        return drm_read(filp, buffer, count, offset);
446}
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