1/**********************************************************
2 * Copyright 2009 VMware, Inc.  All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26/**
27 * @file
28 *
29 * Wrappers for DRM ioctl functionlaity used by the rest of the vmw
30 * drm winsys.
31 *
32 * Based on svgaicd_escape.c
33 */
34
35
36#include "svga_cmd.h"
37#include "util/u_memory.h"
38#include "util/u_math.h"
39#include "svgadump/svga_dump.h"
40#include "vmw_screen.h"
41#include "vmw_context.h"
42#include "vmw_fence.h"
43#include "xf86drm.h"
44#include "vmwgfx_drm.h"
45#include "svga3d_caps.h"
46
47#include "os/os_mman.h"
48
49#include <errno.h>
50#include <unistd.h>
51
52struct vmw_region
53{
54   SVGAGuestPtr ptr;
55   uint32_t handle;
56   uint64_t map_handle;
57   void *data;
58   uint32_t map_count;
59   int drm_fd;
60   uint32_t size;
61};
62
63/* XXX: This isn't a real hardware flag, but just a hack for kernel to
64 * know about primary surfaces. In newer versions of the kernel
65 * interface the driver uses a special field.
66 */
67#define SVGA3D_SURFACE_HINT_SCANOUT (1 << 9)
68
69uint32
70vmw_ioctl_context_create(struct vmw_winsys_screen *vws)
71{
72   struct drm_vmw_context_arg c_arg;
73   int ret;
74
75   VMW_FUNC;
76
77   ret = drmCommandRead(vws->ioctl.drm_fd, DRM_VMW_CREATE_CONTEXT,
78			&c_arg, sizeof(c_arg));
79
80   if (ret)
81      return -1;
82
83   vmw_printf("Context id is %d\n", c_arg.cid);
84
85   return c_arg.cid;
86}
87
88void
89vmw_ioctl_context_destroy(struct vmw_winsys_screen *vws, uint32 cid)
90{
91   struct drm_vmw_context_arg c_arg;
92
93   VMW_FUNC;
94
95   memset(&c_arg, 0, sizeof(c_arg));
96   c_arg.cid = cid;
97
98   (void)drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_UNREF_CONTEXT,
99			 &c_arg, sizeof(c_arg));
100
101}
102
103uint32
104vmw_ioctl_surface_create(struct vmw_winsys_screen *vws,
105			      SVGA3dSurfaceFlags flags,
106			      SVGA3dSurfaceFormat format,
107			      SVGA3dSize size,
108			      uint32_t numFaces, uint32_t numMipLevels)
109{
110   union drm_vmw_surface_create_arg s_arg;
111   struct drm_vmw_surface_create_req *req = &s_arg.req;
112   struct drm_vmw_surface_arg *rep = &s_arg.rep;
113   struct drm_vmw_size sizes[DRM_VMW_MAX_SURFACE_FACES*
114			     DRM_VMW_MAX_MIP_LEVELS];
115   struct drm_vmw_size *cur_size;
116   uint32_t iFace;
117   uint32_t iMipLevel;
118   int ret;
119
120   vmw_printf("%s flags %d format %d\n", __FUNCTION__, flags, format);
121
122   memset(&s_arg, 0, sizeof(s_arg));
123   if (vws->use_old_scanout_flag &&
124       (flags & SVGA3D_SURFACE_HINT_SCANOUT)) {
125      req->flags = (uint32_t) flags;
126      req->scanout = false;
127   } else if (flags & SVGA3D_SURFACE_HINT_SCANOUT) {
128      req->flags = (uint32_t) (flags & ~SVGA3D_SURFACE_HINT_SCANOUT);
129      req->scanout = true;
130   } else {
131      req->flags = (uint32_t) flags;
132      req->scanout = false;
133   }
134   req->format = (uint32_t) format;
135   req->shareable = 1;
136
137   assert(numFaces * numMipLevels < DRM_VMW_MAX_SURFACE_FACES*
138	  DRM_VMW_MAX_MIP_LEVELS);
139   cur_size = sizes;
140   for (iFace = 0; iFace < numFaces; ++iFace) {
141      SVGA3dSize mipSize = size;
142
143      req->mip_levels[iFace] = numMipLevels;
144      for (iMipLevel = 0; iMipLevel < numMipLevels; ++iMipLevel) {
145	 cur_size->width = mipSize.width;
146	 cur_size->height = mipSize.height;
147	 cur_size->depth = mipSize.depth;
148	 mipSize.width = MAX2(mipSize.width >> 1, 1);
149	 mipSize.height = MAX2(mipSize.height >> 1, 1);
150	 mipSize.depth = MAX2(mipSize.depth >> 1, 1);
151	 cur_size++;
152      }
153   }
154   for (iFace = numFaces; iFace < SVGA3D_MAX_SURFACE_FACES; ++iFace) {
155      req->mip_levels[iFace] = 0;
156   }
157
158   req->size_addr = (unsigned long)&sizes;
159
160   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_CREATE_SURFACE,
161			     &s_arg, sizeof(s_arg));
162
163   if (ret)
164      return -1;
165
166   vmw_printf("Surface id is %d\n", rep->sid);
167
168   return rep->sid;
169}
170
171void
172vmw_ioctl_surface_destroy(struct vmw_winsys_screen *vws, uint32 sid)
173{
174   struct drm_vmw_surface_arg s_arg;
175
176   VMW_FUNC;
177
178   memset(&s_arg, 0, sizeof(s_arg));
179   s_arg.sid = sid;
180
181   (void)drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_UNREF_SURFACE,
182			 &s_arg, sizeof(s_arg));
183}
184
185void
186vmw_ioctl_command(struct vmw_winsys_screen *vws, int32_t cid,
187		  uint32_t throttle_us, void *commands, uint32_t size,
188		  struct pipe_fence_handle **pfence)
189{
190   struct drm_vmw_execbuf_arg arg;
191   struct drm_vmw_fence_rep rep;
192   int ret;
193
194#ifdef DEBUG
195   {
196      static boolean firsttime = TRUE;
197      static boolean debug = FALSE;
198      static boolean skip = FALSE;
199      if (firsttime) {
200         debug = debug_get_bool_option("SVGA_DUMP_CMD", FALSE);
201         skip = debug_get_bool_option("SVGA_SKIP_CMD", FALSE);
202      }
203      if (debug) {
204         VMW_FUNC;
205         svga_dump_commands(commands, size);
206      }
207      firsttime = FALSE;
208      if (skip) {
209         size = 0;
210      }
211   }
212#endif
213
214   memset(&arg, 0, sizeof(arg));
215   memset(&rep, 0, sizeof(rep));
216
217   rep.error = -EFAULT;
218   if (pfence)
219      arg.fence_rep = (unsigned long)&rep;
220   arg.commands = (unsigned long)commands;
221   arg.command_size = size;
222   arg.throttle_us = throttle_us;
223   arg.version = DRM_VMW_EXECBUF_VERSION;
224
225   do {
226       ret = drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_EXECBUF, &arg, sizeof(arg));
227   } while(ret == -ERESTART);
228   if (ret) {
229      debug_printf("%s error %s.\n", __FUNCTION__, strerror(-ret));
230   }
231
232   if (rep.error) {
233
234      /*
235       * Kernel has already synced, or caller requested no fence.
236       */
237      if (pfence)
238	 *pfence = NULL;
239   } else {
240      if (pfence) {
241	 *pfence = vmw_fence_create(rep.handle, rep.mask);
242
243	 if (*pfence == NULL) {
244	    /*
245	     * Fence creation failed. Need to sync.
246	     */
247	    (void) vmw_ioctl_fence_finish(vws, rep.handle, rep.mask);
248	    vmw_ioctl_fence_unref(vws, rep.handle);
249	 }
250      }
251   }
252}
253
254
255struct vmw_region *
256vmw_ioctl_region_create(struct vmw_winsys_screen *vws, uint32_t size)
257{
258   struct vmw_region *region;
259   union drm_vmw_alloc_dmabuf_arg arg;
260   struct drm_vmw_alloc_dmabuf_req *req = &arg.req;
261   struct drm_vmw_dmabuf_rep *rep = &arg.rep;
262   int ret;
263
264   vmw_printf("%s: size = %u\n", __FUNCTION__, size);
265
266   region = CALLOC_STRUCT(vmw_region);
267   if (!region)
268      goto out_err1;
269
270   memset(&arg, 0, sizeof(arg));
271   req->size = size;
272   do {
273      ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_ALLOC_DMABUF, &arg,
274				sizeof(arg));
275   } while (ret == -ERESTART);
276
277   if (ret) {
278      debug_printf("IOCTL failed %d: %s\n", ret, strerror(-ret));
279      goto out_err1;
280   }
281
282   region->ptr.gmrId = rep->cur_gmr_id;
283   region->ptr.offset = rep->cur_gmr_offset;
284   region->data = NULL;
285   region->handle = rep->handle;
286   region->map_handle = rep->map_handle;
287   region->map_count = 0;
288   region->size = size;
289   region->drm_fd = vws->ioctl.drm_fd;
290
291   vmw_printf("   gmrId = %u, offset = %u\n",
292              region->ptr.gmrId, region->ptr.offset);
293
294   return region;
295
296 out_err1:
297   FREE(region);
298   return NULL;
299}
300
301void
302vmw_ioctl_region_destroy(struct vmw_region *region)
303{
304   struct drm_vmw_unref_dmabuf_arg arg;
305
306   vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
307              region->ptr.gmrId, region->ptr.offset);
308
309   if (region->data) {
310      os_munmap(region->data, region->size);
311      region->data = NULL;
312   }
313
314   memset(&arg, 0, sizeof(arg));
315   arg.handle = region->handle;
316   drmCommandWrite(region->drm_fd, DRM_VMW_UNREF_DMABUF, &arg, sizeof(arg));
317
318   FREE(region);
319}
320
321SVGAGuestPtr
322vmw_ioctl_region_ptr(struct vmw_region *region)
323{
324   return region->ptr;
325}
326
327void *
328vmw_ioctl_region_map(struct vmw_region *region)
329{
330   void *map;
331
332   vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
333              region->ptr.gmrId, region->ptr.offset);
334
335   if (region->data == NULL) {
336      map = os_mmap(NULL, region->size, PROT_READ | PROT_WRITE, MAP_SHARED,
337		 region->drm_fd, region->map_handle);
338      if (map == MAP_FAILED) {
339	 debug_printf("%s: Map failed.\n", __FUNCTION__);
340	 return NULL;
341      }
342
343      region->data = map;
344   }
345
346   ++region->map_count;
347
348   return region->data;
349}
350
351void
352vmw_ioctl_region_unmap(struct vmw_region *region)
353{
354   vmw_printf("%s: gmrId = %u, offset = %u\n", __FUNCTION__,
355              region->ptr.gmrId, region->ptr.offset);
356   --region->map_count;
357}
358
359void
360vmw_ioctl_fence_unref(struct vmw_winsys_screen *vws,
361		      uint32_t handle)
362{
363   struct drm_vmw_fence_arg arg;
364   int ret;
365
366   memset(&arg, 0, sizeof(arg));
367   arg.handle = handle;
368
369   ret = drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_FENCE_UNREF,
370			 &arg, sizeof(arg));
371   if (ret != 0)
372      debug_printf("%s Failed\n", __FUNCTION__);
373}
374
375static INLINE uint32_t
376vmw_drm_fence_flags(uint32_t flags)
377{
378    uint32_t dflags = 0;
379
380    if (flags & SVGA_FENCE_FLAG_EXEC)
381	dflags |= DRM_VMW_FENCE_FLAG_EXEC;
382    if (flags & SVGA_FENCE_FLAG_QUERY)
383	dflags |= DRM_VMW_FENCE_FLAG_QUERY;
384
385    return dflags;
386}
387
388
389int
390vmw_ioctl_fence_signalled(struct vmw_winsys_screen *vws,
391			  uint32_t handle,
392			  uint32_t flags)
393{
394   struct drm_vmw_fence_signaled_arg arg;
395   uint32_t vflags = vmw_drm_fence_flags(flags);
396   int ret;
397
398   memset(&arg, 0, sizeof(arg));
399   arg.handle = handle;
400   arg.flags = vflags;
401
402   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_FENCE_SIGNALED,
403			     &arg, sizeof(arg));
404
405   if (ret != 0)
406      return ret;
407
408   return (arg.signaled) ? 0 : -1;
409}
410
411
412
413int
414vmw_ioctl_fence_finish(struct vmw_winsys_screen *vws,
415                       uint32_t handle,
416		       uint32_t flags)
417{
418   struct drm_vmw_fence_wait_arg arg;
419   uint32_t vflags = vmw_drm_fence_flags(flags);
420   int ret;
421
422   memset(&arg, 0, sizeof(arg));
423
424   arg.handle = handle;
425   arg.timeout_us = 10*1000000;
426   arg.lazy = 0;
427   arg.flags = vflags;
428
429   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_FENCE_WAIT,
430			     &arg, sizeof(arg));
431
432   if (ret != 0)
433      debug_printf("%s Failed\n", __FUNCTION__);
434
435   return 0;
436}
437
438
439boolean
440vmw_ioctl_init(struct vmw_winsys_screen *vws)
441{
442   struct drm_vmw_getparam_arg gp_arg;
443   struct drm_vmw_get_3d_cap_arg cap_arg;
444   unsigned int size;
445   int ret;
446
447   VMW_FUNC;
448
449   memset(&gp_arg, 0, sizeof(gp_arg));
450   gp_arg.param = DRM_VMW_PARAM_3D;
451   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_GET_PARAM,
452			     &gp_arg, sizeof(gp_arg));
453   if (ret || gp_arg.value == 0) {
454      debug_printf("No 3D enabled (%i, %s).\n", ret, strerror(-ret));
455      goto out_no_3d;
456   }
457
458   memset(&gp_arg, 0, sizeof(gp_arg));
459   gp_arg.param = DRM_VMW_PARAM_FIFO_HW_VERSION;
460   ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_GET_PARAM,
461			     &gp_arg, sizeof(gp_arg));
462   if (ret) {
463      debug_printf("Failed to get fifo hw version"
464		   " (%i, %s).\n", ret, strerror(-ret));
465      goto out_no_3d;
466   }
467   vws->ioctl.hwversion = gp_arg.value;
468
469   size = SVGA_FIFO_3D_CAPS_SIZE * sizeof(uint32_t);
470   vws->ioctl.buffer = calloc(1, size);
471   if (!vws->ioctl.buffer) {
472      debug_printf("Failed alloc fifo 3D caps buffer.\n");
473      goto out_no_3d;
474   }
475
476   memset(&cap_arg, 0, sizeof(cap_arg));
477   cap_arg.buffer = (uint64_t) (unsigned long) (vws->ioctl.buffer);
478   cap_arg.max_size = size;
479
480   ret = drmCommandWrite(vws->ioctl.drm_fd, DRM_VMW_GET_3D_CAP,
481			 &cap_arg, sizeof(cap_arg));
482
483   if (ret) {
484      debug_printf("Failed to get 3D capabilities"
485		   " (%i, %s).\n", ret, strerror(-ret));
486      goto out_no_caps;
487   }
488
489   vmw_printf("%s OK\n", __FUNCTION__);
490   return TRUE;
491  out_no_caps:
492   free(vws->ioctl.buffer);
493  out_no_3d:
494   debug_printf("%s Failed\n", __FUNCTION__);
495   return FALSE;
496}
497
498
499
500void
501vmw_ioctl_cleanup(struct vmw_winsys_screen *vws)
502{
503   VMW_FUNC;
504}
505