summaryrefslogtreecommitdiff
path: root/src/gallium/winsys/svga/drm/vmw_screen_ioctl.c
blob: 5d81fa8c4a6de223e58a39df14474dec4711a7b6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
/**********************************************************
 * Copyright 2009 VMware, Inc.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 **********************************************************/

/**
 * @file
 *
 * Wrappers for DRM ioctl functionlaity used by the rest of the vmw
 * drm winsys.
 *
 * Based on svgaicd_escape.c
 */


#include "svga_cmd.h"
#include "util/u_memory.h"
#include "util/u_math.h"
#include "svgadump/svga_dump.h"
#include "vmw_screen.h"
#include "vmw_context.h"
#include "xf86drm.h"
#include "vmwgfx_drm.h"

#include <sys/mman.h>
#include <errno.h>
#include <unistd.h>

struct vmw_region
{
   SVGAGuestPtr ptr;
   uint32_t handle;
   uint64_t map_handle;
   void *data;
   uint32_t map_count;
   int drm_fd;
   uint32_t size;
};

/* XXX: This isn't a real hardware flag, but just a hack for kernel to
 * know about primary surfaces. In newer versions of the kernel
 * interface the driver uses a special field.
 */
#define SVGA3D_SURFACE_HINT_SCANOUT (1 << 9)

static void
vmw_check_last_cmd(struct vmw_winsys_screen *vws)
{
   static uint32_t buffer[16384];
   struct drm_vmw_fifo_debug_arg arg;
   int ret;

   return;
   memset(&arg, 0, sizeof(arg));
   arg.debug_buffer = (unsigned long)buffer;
   arg.debug_buffer_size = 65536;

   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_FIFO_DEBUG,
			     &arg, sizeof(arg));

   if (ret) {
      debug_printf("%s Ioctl error: \"%s\".\n", __FUNCTION__, strerror(-ret));
      return;
   }

   if (arg.did_not_fit) {
      debug_printf("%s Command did not fit completely.\n", __FUNCTION__);
   }

   svga_dump_commands(buffer, arg.used_size);
}

static void
vmw_ioctl_fifo_unmap(struct vmw_winsys_screen *vws, void *mapping)
{
   VMW_FUNC;
   (void)munmap(mapping, getpagesize());
}


static void *
vmw_ioctl_fifo_map(struct vmw_winsys_screen *vws,
                   uint32_t fifo_offset )
{
   void *map;

   VMW_FUNC;

   map = mmap(NULL, getpagesize(), PROT_READ, MAP_SHARED,
	      vws->ioctl.drm_fd, fifo_offset);

   if (map == MAP_FAILED) {
      debug_printf("Map failed %s\n", strerror(errno));
      return NULL;
   }

   vmw_printf("Fifo (min) is 0x%08x\n", ((uint32_t *) map)[SVGA_FIFO_MIN]);

   return map;
}

uint32
vmw_ioctl_context_create(struct vmw_winsys_screen *vws)
{
   struct drm_vmw_context_arg c_arg;
   int ret;

   VMW_FUNC;

   ret = drmCommandRead(vws->ioctl.drm_fd, DRM_VMW_CREATE_CONTEXT,
			&c_arg, sizeof(c_arg));

   if (ret)
      return -1;

   vmw_check_last_cmd(vws);
   vmw_printf("Context id is %d\n", c_arg.cid);

   return c_arg.cid;
}

void
vmw_ioctl_context_destroy(struct vmw_winsys_screen *vws, uint32 cid)
{
   struct drm_vmw_context_arg c_arg;

   VMW_FUNC;

   memset(&c_arg, 0, sizeof(c_arg));
   c_arg.cid = cid;

   (void)drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_UNREF_CONTEXT,
			 &c_arg, sizeof(c_arg));

   vmw_check_last_cmd(vws);
}

uint32
vmw_ioctl_surface_create(struct vmw_winsys_screen *vws,
			      SVGA3dSurfaceFlags flags,
			      SVGA3dSurfaceFormat format,
			      SVGA3dSize size,
			      uint32_t numFaces, uint32_t numMipLevels)
{
   union drm_vmw_surface_create_arg s_arg;
   struct drm_vmw_surface_create_req *req = &s_arg.req;
   struct drm_vmw_surface_arg *rep = &s_arg.rep;
   struct drm_vmw_size sizes[DRM_VMW_MAX_SURFACE_FACES*
			     DRM_VMW_MAX_MIP_LEVELS];
   struct drm_vmw_size *cur_size;
   uint32_t iFace;
   uint32_t iMipLevel;
   int ret;

   vmw_printf("%s flags %d format %d\n", __FUNCTION__, flags, format);

   memset(&s_arg, 0, sizeof(s_arg));
   if (vws->use_old_scanout_flag &&
       (flags & SVGA3D_SURFACE_HINT_SCANOUT)) {
      req->flags = (uint32_t) flags;
      req->scanout = false;
   } else if (flags & SVGA3D_SURFACE_HINT_SCANOUT) {
      req->flags = (uint32_t) (flags & ~SVGA3D_SURFACE_HINT_SCANOUT);
      req->scanout = true;
   } else {
      req->flags = (uint32_t) flags;
      req->scanout = false;
   }
   req->format = (uint32_t) format;
   req->shareable = 1;

   assert(numFaces * numMipLevels < DRM_VMW_MAX_SURFACE_FACES*
	  DRM_VMW_MAX_MIP_LEVELS);
   cur_size = sizes;
   for (iFace = 0; iFace < numFaces; ++iFace) {
      SVGA3dSize mipSize = size;

      req->mip_levels[iFace] = numMipLevels;
      for (iMipLevel = 0; iMipLevel < numMipLevels; ++iMipLevel) {
	 cur_size->width = mipSize.width;
	 cur_size->height = mipSize.height;
	 cur_size->depth = mipSize.depth;
	 mipSize.width = MAX2(mipSize.width >> 1, 1);
	 mipSize.height = MAX2(mipSize.height >> 1, 1);
	 mipSize.depth = MAX2(mipSize.depth >> 1, 1);
	 cur_size++;
      }
   }
   for (iFace = numFaces; iFace < SVGA3D_MAX_SURFACE_FACES; ++iFace) {
      req->mip_levels[iFace] = 0;
   }

   req->size_addr = (unsigned long)&sizes;

   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_CREATE_SURFACE,
			     &s_arg, sizeof(s_arg));

   if (ret)
      return -1;

   vmw_printf("Surface id is %d\n", rep->sid);
   vmw_check_last_cmd(vws);

   return rep->sid;
}

void
vmw_ioctl_surface_destroy(struct vmw_winsys_screen *vws, uint32 sid)
{
   struct drm_vmw_surface_arg s_arg;

   VMW_FUNC;

   memset(&s_arg, 0, sizeof(s_arg));
   s_arg.sid = sid;

   (void)drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_UNREF_SURFACE,
			 &s_arg, sizeof(s_arg));
   vmw_check_last_cmd(vws);

}

void
vmw_ioctl_command(struct vmw_winsys_screen *vws, void *commands, uint32_t size,
		       uint32_t * pfence)
{
   struct drm_vmw_execbuf_arg arg;
   struct drm_vmw_fence_rep rep;
   int ret;

#ifdef DEBUG
   {
      static boolean firsttime = TRUE;
      static boolean debug = FALSE;
      static boolean skip = FALSE;
      if (firsttime) {
         debug = debug_get_bool_option("SVGA_DUMP_CMD", FALSE);
         skip = debug_get_bool_option("SVGA_SKIP_CMD", FALSE);
      }
      if (debug) {
         VMW_FUNC;
         svga_dump_commands(commands, size);
      }
      firsttime = FALSE;
      if (skip) {
         size = 0;
      }
   }
#endif

   memset(&arg, 0, sizeof(arg));
   memset(&rep, 0, sizeof(rep));

   rep.error = -EFAULT;
   arg.fence_rep = (unsigned long)&rep;
   arg.commands = (unsigned long)commands;
   arg.command_size = size;

   do {
       ret = drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_EXECBUF, &arg, sizeof(arg));
   } while(ret == -ERESTART);
   if (ret) {
      debug_printf("%s error %s.\n", __FUNCTION__, strerror(-ret));
   }
   if (rep.error) {

      /*
       * Kernel has synced and put the last fence sequence in the FIFO
       * register.
       */

      if (rep.error == -EFAULT)
	 rep.fence_seq = vws->ioctl.fifo_map[SVGA_FIFO_FENCE];

      debug_printf("%s Fence error %s.\n", __FUNCTION__,
		   strerror(-rep.error));
   }

   vws->ioctl.last_fence = rep.fence_seq;

   if (pfence)
      *pfence = rep.fence_seq;
   vmw_check_last_cmd(vws);

}


struct vmw_region *
vmw_ioctl_region_create(struct vmw_winsys_screen *vws, uint32_t size)
{
   struct vmw_region *region;
   union drm_vmw_alloc_dmabuf_arg arg;
   struct drm_vmw_alloc_dmabuf_req *req = &arg.req;
   struct drm_vmw_dmabuf_rep *rep = &arg.rep;
   int ret;

   vmw_printf("%s: size = %u\n", __FUNCTION__, size);

   region = CALLOC_STRUCT(vmw_region);
   if (!region)
      goto out_err1;

   memset(&arg, 0, sizeof(arg));
   req->size = size;
   do {
      ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_ALLOC_DMABUF, &arg,
				sizeof(arg));
   } while (ret == -ERESTART);

   if (ret) {
      debug_printf("IOCTL failed %d: %s\n", ret, strerror(-ret));
      goto out_err1;
   }

   region->ptr.gmrId = rep->cur_gmr_id;
   region->ptr.offset = rep->cur_gmr_offset;
   region->data = NULL;
   region->handle = rep->handle;
   region->map_handle = rep->map_handle;
   region->map_count = 0;
   region->size = size;
   region->drm_fd = vws->ioctl.drm_fd;

   vmw_printf("   gmrId = %u, offset = %u\n",
              region->ptr.gmrId, region->ptr.offset);

   return region;

 out_err1:
   FREE(region);
   return NULL;
}

void
vmw_ioctl_region_destroy(struct vmw_region *region)
{
   struct drm_vmw_unref_dmabuf_arg arg;

   vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
              region->ptr.gmrId, region->ptr.offset);

   if (region->data) {
      munmap(region->data, region->size);
      region->data = NULL;
   }

   memset(&arg, 0, sizeof(arg));
   arg.handle = region->handle;
   drmCommandWrite(region->drm_fd, DRM_VMW_UNREF_DMABUF, &arg, sizeof(arg));

   FREE(region);
}

SVGAGuestPtr
vmw_ioctl_region_ptr(struct vmw_region *region)
{
   return region->ptr;
}

void *
vmw_ioctl_region_map(struct vmw_region *region)
{
   void *map;

   vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
              region->ptr.gmrId, region->ptr.offset);

   if (region->data == NULL) {
      map = mmap(NULL, region->size, PROT_READ | PROT_WRITE, MAP_SHARED,
		 region->drm_fd, region->map_handle);
      if (map == MAP_FAILED) {
	 debug_printf("%s: Map failed.\n", __FUNCTION__);
	 return NULL;
      }

      region->data = map;
   }

   ++region->map_count;

   return region->data;
}

void
vmw_ioctl_region_unmap(struct vmw_region *region)
{
   vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
              region->ptr.gmrId, region->ptr.offset);
   --region->map_count;
}


int
vmw_ioctl_fence_signalled(struct vmw_winsys_screen *vws,
                          uint32_t fence)
{
   uint32_t expected;
   uint32_t current;
   
   assert(fence);
   if(!fence)
      return 0;
   
   expected = fence;
   current = vws->ioctl.fifo_map[SVGA_FIFO_FENCE];
   
   if ((int32)(current - expected) >= 0)
      return 0; /* fence passed */
   else
      return -1;
}


static void
vmw_ioctl_sync(struct vmw_winsys_screen *vws, 
		    uint32_t fence)
{
   uint32_t cur_fence;
   struct drm_vmw_fence_wait_arg arg;
   int ret;

   vmw_printf("%s: fence = %lu\n", __FUNCTION__,
              (unsigned long)fence);

   cur_fence = vws->ioctl.fifo_map[SVGA_FIFO_FENCE];
   vmw_printf("%s: Fence id read is 0x%08x\n", __FUNCTION__,
              (unsigned int)cur_fence);

   if ((cur_fence - fence) < (1 << 24))
      return;

   memset(&arg, 0, sizeof(arg));
   arg.sequence = fence;

   do {
       ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_FENCE_WAIT, &arg,
				 sizeof(arg));
   } while (ret == -ERESTART);
}


int
vmw_ioctl_fence_finish(struct vmw_winsys_screen *vws,
                       uint32_t fence)
{
   assert(fence);
   
   if(fence) {
      if(vmw_ioctl_fence_signalled(vws, fence) != 0) {
         vmw_ioctl_sync(vws, fence);
      }
   }
   
   return 0;
}


boolean
vmw_ioctl_init(struct vmw_winsys_screen *vws)
{
   struct drm_vmw_getparam_arg gp_arg;
   int ret;

   VMW_FUNC;

   memset(&gp_arg, 0, sizeof(gp_arg));
   gp_arg.param = DRM_VMW_PARAM_3D;
   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_GET_PARAM,
			     &gp_arg, sizeof(gp_arg));
   if (ret || gp_arg.value == 0) {
      debug_printf("No 3D enabled (%i, %s)\n", ret, strerror(-ret));
      goto out_err1;
   }

   memset(&gp_arg, 0, sizeof(gp_arg));
   gp_arg.param = DRM_VMW_PARAM_FIFO_OFFSET;
   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_GET_PARAM,
			     &gp_arg, sizeof(gp_arg));

   if (ret) {
      debug_printf("GET_PARAM on %d returned %d: %s\n",
		   vws->ioctl.drm_fd, ret, strerror(-ret));
      goto out_err1;
   }

   vmw_printf("Offset to map is 0x%08llx\n",
              (unsigned long long)gp_arg.value);

   vws->ioctl.fifo_map = vmw_ioctl_fifo_map(vws, gp_arg.value);
   if (vws->ioctl.fifo_map == NULL)
      goto out_err1;

   vmw_printf("%s OK\n", __FUNCTION__);
   return TRUE;

 out_err1:
   debug_printf("%s Failed\n", __FUNCTION__);
   return FALSE;
}



void
vmw_ioctl_cleanup(struct vmw_winsys_screen *vws)
{
   VMW_FUNC;

   vmw_ioctl_fifo_unmap(vws, (void *)vws->ioctl.fifo_map);
}