1 /*
2 * Copyright 2011 VMWare, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
26 * Author: Thomas Hellstrom <thellstrom@vmware.com>
27 */
28
29 #ifdef HAVE_CONFIG_H
30 #include "config.h"
31 #endif
32
33 #include <stdint.h>
34 #include <errno.h>
35 #include <sys/mman.h>
36 #include "vmwgfx_drm.h"
37 #include <xf86drm.h>
38 #include "vmwgfx_drmi.h"
39
40 #define uint32 uint32_t
41 #define int32 int32_t
42 #define uint16 uint16_t
43 #define uint8 uint8_t
44
45 #include "svga3d_reg.h"
46 #include "vmwgfx_driver.h"
47
48 static int
vmwgfx_fence_wait(int drm_fd,uint32_t handle,Bool unref)49 vmwgfx_fence_wait(int drm_fd, uint32_t handle, Bool unref)
50 {
51 struct drm_vmw_fence_wait_arg farg;
52 memset(&farg, 0, sizeof(farg));
53
54 farg.handle = handle;
55 farg.flags = DRM_VMW_FENCE_FLAG_EXEC;
56 farg.timeout_us = 10*1000000;
57 farg.cookie_valid = 0;
58
59 if (unref)
60 farg.wait_options |= DRM_VMW_WAIT_OPTION_UNREF;
61
62 return drmCommandWriteRead(drm_fd, DRM_VMW_FENCE_WAIT, &farg,
63 sizeof(farg));
64 }
65
66 static void
vmwgfx_fence_unref(int drm_fd,uint32_t handle)67 vmwgfx_fence_unref(int drm_fd, uint32_t handle)
68 {
69 struct drm_vmw_fence_arg farg;
70 memset(&farg, 0, sizeof(farg));
71
72 farg.handle = handle;
73
74 (void) drmCommandWrite(drm_fd, DRM_VMW_FENCE_UNREF, &farg,
75 sizeof(farg));
76 }
77
78
79 int
vmwgfx_present_readback(int drm_fd,uint32_t fb_id,RegionPtr region)80 vmwgfx_present_readback(int drm_fd, uint32_t fb_id, RegionPtr region)
81 {
82 BoxPtr clips = REGION_RECTS(region);
83 unsigned int num_clips = REGION_NUM_RECTS(region);
84 struct drm_vmw_fence_rep rep;
85 struct drm_vmw_present_readback_arg arg;
86 int ret;
87 unsigned i;
88 struct drm_vmw_rect *rects, *r;
89
90 rects = calloc(num_clips, sizeof(*rects));
91 if (!rects) {
92 LogMessage(X_ERROR, "Failed to alloc cliprects for "
93 "present readback.\n");
94 return -1;
95 }
96
97 memset(&arg, 0, sizeof(arg));
98 memset(&rep, 0, sizeof(rep));
99
100 arg.fb_id = fb_id;
101 arg.num_clips = num_clips;
102 arg.clips_ptr = (unsigned long) rects;
103 arg.fence_rep = (unsigned long) &rep;
104 rep.error = -EFAULT;
105
106 for (i = 0, r = rects; i < num_clips; ++i, ++r, ++clips) {
107 r->x = clips->x1;
108 r->y = clips->y1;
109 r->w = clips->x2 - clips->x1;
110 r->h = clips->y2 - clips->y1;
111 }
112
113 ret = drmCommandWrite(drm_fd, DRM_VMW_PRESENT_READBACK, &arg, sizeof(arg));
114 if (ret)
115 LogMessage(X_ERROR, "Present readback error %s.\n", strerror(-ret));
116 free(rects);
117
118 /*
119 * Sync to avoid racing with Xorg SW rendering.
120 */
121
122 if (rep.error == 0) {
123 ret = vmwgfx_fence_wait(drm_fd, rep.handle, TRUE);
124 if (ret) {
125 LogMessage(X_ERROR, "Present readback fence wait error %s.\n",
126 strerror(-ret));
127 vmwgfx_fence_unref(drm_fd, rep.handle);
128 }
129 }
130
131 return 0;
132 }
133
134
135 int
vmwgfx_present(int drm_fd,uint32_t fb_id,unsigned int dst_x,unsigned int dst_y,RegionPtr region,uint32_t handle)136 vmwgfx_present(int drm_fd, uint32_t fb_id, unsigned int dst_x,
137 unsigned int dst_y, RegionPtr region, uint32_t handle)
138 {
139 BoxPtr clips = REGION_RECTS(region);
140 unsigned int num_clips = REGION_NUM_RECTS(region);
141 struct drm_vmw_present_arg arg;
142 unsigned int i;
143 struct drm_vmw_rect *rects, *r;
144 int ret;
145
146 if (num_clips == 0)
147 return 0;
148
149 rects = calloc(num_clips, sizeof(*rects));
150 if (!rects) {
151 LogMessage(X_ERROR, "Failed to alloc cliprects for "
152 "present.\n");
153 return -1;
154 }
155
156 memset(&arg, 0, sizeof(arg));
157 arg.fb_id = fb_id;
158 arg.sid = handle;
159 arg.dest_x = dst_x;
160 arg.dest_y = dst_y;
161 arg.num_clips = num_clips;
162 arg.clips_ptr = (unsigned long) rects;
163
164 for (i = 0, r = rects; i < num_clips; ++i, ++r, ++clips) {
165 r->x = clips->x1;
166 r->y = clips->y1;
167 r->w = clips->x2 - clips->x1;
168 r->h = clips->y2 - clips->y1;
169 }
170
171 ret = drmCommandWrite(drm_fd, DRM_VMW_PRESENT, &arg, sizeof(arg));
172 if (ret) {
173 LogMessage(X_ERROR, "Present error %s.\n", strerror(-ret));
174 }
175
176 free(rects);
177 return ((ret != 0) ? -1 : 0);
178 }
179
180
181 struct vmwgfx_int_dmabuf {
182 struct vmwgfx_dmabuf buf;
183 uint64_t map_handle;
184 uint64_t sync_handle;
185 int sync_valid;
186 int drm_fd;
187 uint32_t map_count;
188 void *addr;
189 };
190
191 static inline struct vmwgfx_int_dmabuf *
vmwgfx_int_dmabuf(struct vmwgfx_dmabuf * buf)192 vmwgfx_int_dmabuf(struct vmwgfx_dmabuf *buf)
193 {
194 return (struct vmwgfx_int_dmabuf *) buf;
195 }
196
197 struct vmwgfx_dmabuf*
vmwgfx_dmabuf_alloc(int drm_fd,size_t size)198 vmwgfx_dmabuf_alloc(int drm_fd, size_t size)
199 {
200 union drm_vmw_alloc_dmabuf_arg arg;
201 struct vmwgfx_dmabuf *buf;
202 struct vmwgfx_int_dmabuf *ibuf;
203 int ret;
204
205 ibuf = calloc(1, sizeof(*ibuf));
206 if (!ibuf)
207 return NULL;
208
209 buf = &ibuf->buf;
210 memset(&arg, 0, sizeof(arg));
211 arg.req.size = size;
212
213 ret = drmCommandWriteRead(drm_fd, DRM_VMW_ALLOC_DMABUF, &arg,
214 sizeof(arg));
215 if (ret)
216 goto out_kernel_fail;
217
218 ibuf = vmwgfx_int_dmabuf(buf);
219 ibuf->map_handle = arg.rep.map_handle;
220 ibuf->drm_fd = drm_fd;
221 buf->handle = arg.rep.handle;
222 buf->gmr_id = arg.rep.cur_gmr_id;
223 buf->gmr_offset = arg.rep.cur_gmr_offset;
224 buf->size = size;
225
226 return buf;
227 out_kernel_fail:
228 free(buf);
229 return NULL;
230 }
231
232 void *
vmwgfx_dmabuf_map(struct vmwgfx_dmabuf * buf)233 vmwgfx_dmabuf_map(struct vmwgfx_dmabuf *buf)
234 {
235 struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
236
237 if (ibuf->addr)
238 return ibuf->addr;
239
240 ibuf->addr = mmap(NULL, buf->size, PROT_READ | PROT_WRITE, MAP_SHARED,
241 ibuf->drm_fd, ibuf->map_handle);
242
243 if (ibuf->addr == MAP_FAILED) {
244 ibuf->addr = NULL;
245 return NULL;
246 }
247
248 ibuf->map_count++;
249 return ibuf->addr;
250 }
251
252 void
vmwgfx_dmabuf_unmap(struct vmwgfx_dmabuf * buf)253 vmwgfx_dmabuf_unmap(struct vmwgfx_dmabuf *buf)
254 {
255 struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
256
257 if (--ibuf->map_count)
258 return;
259
260 /*
261 * It's a pretty important performance optimzation not to call
262 * munmap here, although we should watch out for cases where we might fill
263 * the virtual memory space of the process.
264 */
265 }
266
267 void
vmwgfx_dmabuf_destroy(struct vmwgfx_dmabuf * buf)268 vmwgfx_dmabuf_destroy(struct vmwgfx_dmabuf *buf)
269 {
270 struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
271 struct drm_vmw_unref_dmabuf_arg arg;
272
273 if (ibuf->addr) {
274 munmap(ibuf->addr, buf->size);
275 ibuf->addr = NULL;
276 }
277
278 memset(&arg, 0, sizeof(arg));
279 arg.handle = buf->handle;
280
281 (void) drmCommandWrite(ibuf->drm_fd, DRM_VMW_UNREF_DMABUF, &arg,
282 sizeof(arg));
283 free(buf);
284 }
285
286 int
vmwgfx_dma(int host_x,int host_y,RegionPtr region,struct vmwgfx_dmabuf * buf,uint32_t buf_pitch,uint32_t surface_handle,int to_surface)287 vmwgfx_dma(int host_x, int host_y,
288 RegionPtr region, struct vmwgfx_dmabuf *buf,
289 uint32_t buf_pitch, uint32_t surface_handle, int to_surface)
290 {
291 BoxPtr clips = REGION_RECTS(region);
292 unsigned int num_clips = REGION_NUM_RECTS(region);
293 struct drm_vmw_execbuf_arg arg;
294 struct drm_vmw_fence_rep rep;
295 int ret;
296 unsigned int size;
297 unsigned i;
298 SVGA3dCopyBox *cb;
299 SVGA3dCmdSurfaceDMASuffix *suffix;
300 SVGA3dCmdSurfaceDMA *body;
301 struct vmwgfx_int_dmabuf *ibuf = vmwgfx_int_dmabuf(buf);
302
303 struct {
304 SVGA3dCmdHeader header;
305 SVGA3dCmdSurfaceDMA body;
306 SVGA3dCopyBox cb;
307 } *cmd;
308
309 if (num_clips == 0)
310 return 0;
311
312 size = sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cb) +
313 sizeof(*suffix);
314 cmd = malloc(size);
315 if (!cmd)
316 return -1;
317
318 cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
319 cmd->header.size = sizeof(cmd->body) + num_clips * sizeof(cmd->cb) +
320 sizeof(*suffix);
321 cb = &cmd->cb;
322
323 suffix = (SVGA3dCmdSurfaceDMASuffix *) &cb[num_clips];
324 suffix->suffixSize = sizeof(*suffix);
325 suffix->maximumOffset = (uint32_t) -1;
326 suffix->flags.discard = 0;
327 suffix->flags.unsynchronized = 0;
328 suffix->flags.reserved = 0;
329
330 body = &cmd->body;
331 body->guest.ptr.gmrId = buf->gmr_id;
332 body->guest.ptr.offset = buf->gmr_offset;
333 body->guest.pitch = buf_pitch;
334 body->host.sid = surface_handle;
335 body->host.face = 0;
336 body->host.mipmap = 0;
337
338 body->transfer = (to_surface ? SVGA3D_WRITE_HOST_VRAM :
339 SVGA3D_READ_HOST_VRAM);
340
341
342 for (i=0; i < num_clips; i++, cb++, clips++) {
343 cb->x = (uint16_t) clips->x1 + host_x;
344 cb->y = (uint16_t) clips->y1 + host_y;
345 cb->z = 0;
346 cb->srcx = (uint16_t) clips->x1;
347 cb->srcy = (uint16_t) clips->y1;
348 cb->srcz = 0;
349 cb->w = (uint16_t) (clips->x2 - clips->x1);
350 cb->h = (uint16_t) (clips->y2 - clips->y1);
351 cb->d = 1;
352 #if 0
353 LogMessage(X_INFO, "DMA! x: %u y: %u srcx: %u srcy: %u w: %u h: %u %s\n",
354 cb->x, cb->y, cb->srcx, cb->srcy, cb->w, cb->h,
355 to_surface ? "to" : "from");
356 #endif
357
358 }
359
360 memset(&arg, 0, sizeof(arg));
361 memset(&rep, 0, sizeof(rep));
362
363 rep.error = -EFAULT;
364 arg.fence_rep = ((to_surface) ? 0UL : (unsigned long)&rep);
365 arg.commands = (unsigned long)cmd;
366 arg.command_size = size;
367 arg.throttle_us = 0;
368 arg.version = DRM_VMW_EXECBUF_VERSION;
369
370 ret = drmCommandWrite(ibuf->drm_fd, DRM_VMW_EXECBUF, &arg, sizeof(arg));
371 if (ret) {
372 LogMessage(X_ERROR, "DMA error %s.\n", strerror(-ret));
373 }
374
375 free(cmd);
376
377 if (rep.error == 0) {
378 ret = vmwgfx_fence_wait(ibuf->drm_fd, rep.handle, TRUE);
379 if (ret) {
380 LogMessage(X_ERROR, "DMA from host fence wait error %s.\n",
381 strerror(-ret));
382 vmwgfx_fence_unref(ibuf->drm_fd, rep.handle);
383 }
384 }
385
386 return 0;
387 }
388
389 int
vmwgfx_get_param(int drm_fd,uint32_t param,uint64_t * out)390 vmwgfx_get_param(int drm_fd, uint32_t param, uint64_t *out)
391 {
392 struct drm_vmw_getparam_arg gp_arg;
393 int ret;
394
395 memset(&gp_arg, 0, sizeof(gp_arg));
396 gp_arg.param = param;
397 ret = drmCommandWriteRead(drm_fd, DRM_VMW_GET_PARAM,
398 &gp_arg, sizeof(gp_arg));
399
400 if (ret == 0) {
401 *out = gp_arg.value;
402 }
403
404 return ret;
405 }
406
407 int
vmwgfx_num_streams(int drm_fd,uint32_t * ntot,uint32_t * nfree)408 vmwgfx_num_streams(int drm_fd, uint32_t *ntot, uint32_t *nfree)
409 {
410 uint64_t v1, v2;
411 int ret;
412
413 ret = vmwgfx_get_param(drm_fd, DRM_VMW_PARAM_NUM_STREAMS, &v1);
414 if (ret)
415 return ret;
416
417 ret = vmwgfx_get_param(drm_fd, DRM_VMW_PARAM_NUM_FREE_STREAMS, &v2);
418 if (ret)
419 return ret;
420
421 *ntot = (uint32_t)v1;
422 *nfree = (uint32_t)v2;
423
424 return 0;
425 }
426
427 int
vmwgfx_claim_stream(int drm_fd,uint32_t * out)428 vmwgfx_claim_stream(int drm_fd, uint32_t *out)
429 {
430 struct drm_vmw_stream_arg s_arg;
431 int ret;
432
433 ret = drmCommandRead(drm_fd, DRM_VMW_CLAIM_STREAM,
434 &s_arg, sizeof(s_arg));
435
436 if (ret)
437 return -1;
438
439 *out = s_arg.stream_id;
440 return 0;
441 }
442
443 int
vmwgfx_unref_stream(int drm_fd,uint32_t stream_id)444 vmwgfx_unref_stream(int drm_fd, uint32_t stream_id)
445 {
446 struct drm_vmw_stream_arg s_arg;
447 int ret;
448
449 memset(&s_arg, 0, sizeof(s_arg));
450 s_arg.stream_id = stream_id;
451
452 ret = drmCommandWrite(drm_fd, DRM_VMW_UNREF_STREAM,
453 &s_arg, sizeof(s_arg));
454
455 return (ret != 0) ? -1 : 0;
456 }
457
458 int
vmwgfx_cursor_bypass(int drm_fd,int xhot,int yhot)459 vmwgfx_cursor_bypass(int drm_fd, int xhot, int yhot)
460 {
461 struct drm_vmw_cursor_bypass_arg arg;
462 int ret;
463
464 memset(&arg, 0, sizeof(arg));
465 arg.flags = DRM_VMW_CURSOR_BYPASS_ALL;
466 arg.xhot = xhot;
467 arg.yhot = yhot;
468
469 ret = drmCommandWrite(drm_fd, DRM_VMW_CURSOR_BYPASS,
470 &arg, sizeof(arg));
471
472 return ret;
473 }
474
475 int
vmwgfx_update_gui_layout(int drm_fd,unsigned int num_rects,struct drm_vmw_rect * rects)476 vmwgfx_update_gui_layout(int drm_fd, unsigned int num_rects,
477 struct drm_vmw_rect *rects)
478 {
479 struct drm_vmw_update_layout_arg arg;
480
481 memset(&arg, 0, sizeof(arg));
482
483 arg.num_outputs = num_rects;
484 arg.rects = (unsigned long) rects;
485
486 return drmCommandWrite(drm_fd, DRM_VMW_UPDATE_LAYOUT, &arg,
487 sizeof(arg));
488 }
489
490
491 int
vmwgfx_max_fb_size(int drm_fd,size_t * size)492 vmwgfx_max_fb_size(int drm_fd, size_t *size)
493 {
494 uint64_t tmp_size;
495
496 if (vmwgfx_get_param(drm_fd, DRM_VMW_PARAM_MAX_FB_SIZE, &tmp_size) != 0)
497 return -1;
498
499 *size = tmp_size;
500
501 return 0;
502 }
503
504 #ifdef HAVE_LIBDRM_2_4_38
505 /**
506 * vmwgfx_prime_fd_to_handle - Return a TTM handle to a prime object
507 *
508 * @drm_fd: File descriptor for the drm connection.
509 * @prime_fd: File descriptor identifying the prime object.
510 * @handle: Pointer to returned TTM handle.
511 *
512 * Takes a reference on the underlying object and returns a TTM handle to it.
513 */
514 int
vmwgfx_prime_fd_to_handle(int drm_fd,int prime_fd,uint32_t * handle)515 vmwgfx_prime_fd_to_handle(int drm_fd, int prime_fd, uint32_t *handle)
516 {
517 *handle = 0;
518
519 return drmPrimeFDToHandle(drm_fd, prime_fd, handle);
520 }
521
522 /**
523 * vmwgfx_prime_release_handle - Release a reference on a TTM object
524 *
525 * @drm_fd: File descriptor for the drm connection.
526 * @handle: TTM handle as returned by vmwgfx_prime_fd_to_handle.
527 *
528 * Releases the reference obtained by vmwgfx_prime_fd_to_handle().
529 */
530 void
vmwgfx_prime_release_handle(int drm_fd,uint32_t handle)531 vmwgfx_prime_release_handle(int drm_fd, uint32_t handle)
532 {
533 struct drm_vmw_surface_arg s_arg;
534
535 memset(&s_arg, 0, sizeof(s_arg));
536 s_arg.sid = handle;
537
538 (void) drmCommandWrite(drm_fd, DRM_VMW_UNREF_SURFACE, &s_arg,
539 sizeof(s_arg));
540 }
541 #endif /* HAVE_LIBDRM_2_4_38 */
542