1 /**********************************************************
2 * Copyright 2009-2015 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 #include "pipe/p_compiler.h"
28 #include "util/u_inlines.h"
29 #include "util/u_memory.h"
30 #include "util/format/u_format.h"
31
32 #include "vmw_context.h"
33 #include "vmw_screen.h"
34 #include "vmw_surface.h"
35 #include "vmw_buffer.h"
36 #include "svga_drm_public.h"
37 #include "svga3d_surfacedefs.h"
38
39 #include "frontend/drm_driver.h"
40
41 #include "vmwgfx_drm.h"
42 #include <xf86drm.h>
43
44 #include <stdio.h>
45 #include <fcntl.h>
46
47 struct dri1_api_version {
48 int major;
49 int minor;
50 int patch_level;
51 };
52
53 static struct svga_winsys_surface *
54 vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
55 struct winsys_handle *whandle,
56 SVGA3dSurfaceFormat *format);
57
58 static struct svga_winsys_surface *
59 vmw_drm_gb_surface_from_handle(struct svga_winsys_screen *sws,
60 struct winsys_handle *whandle,
61 SVGA3dSurfaceFormat *format);
62 static boolean
63 vmw_drm_surface_get_handle(struct svga_winsys_screen *sws,
64 struct svga_winsys_surface *surface,
65 unsigned stride,
66 struct winsys_handle *whandle);
67
68 static struct dri1_api_version drm_required = { 2, 1, 0 };
69 static struct dri1_api_version drm_compat = { 2, 0, 0 };
70
71 static boolean
vmw_dri1_check_version(const struct dri1_api_version * cur,const struct dri1_api_version * required,const struct dri1_api_version * compat,const char component[])72 vmw_dri1_check_version(const struct dri1_api_version *cur,
73 const struct dri1_api_version *required,
74 const struct dri1_api_version *compat,
75 const char component[])
76 {
77 if (cur->major > required->major && cur->major <= compat->major)
78 return TRUE;
79 if (cur->major == required->major && cur->minor >= required->minor)
80 return TRUE;
81
82 vmw_error("%s version failure.\n", component);
83 vmw_error("%s version is %d.%d.%d and this driver can only work\n"
84 "with versions %d.%d.x through %d.x.x.\n",
85 component,
86 cur->major, cur->minor, cur->patch_level,
87 required->major, required->minor, compat->major);
88 return FALSE;
89 }
90
91 /* This is actually the entrypoint to the entire driver,
92 * called by the target bootstrap code.
93 */
94 struct svga_winsys_screen *
svga_drm_winsys_screen_create(int fd)95 svga_drm_winsys_screen_create(int fd)
96 {
97 struct vmw_winsys_screen *vws;
98 struct dri1_api_version drm_ver;
99 drmVersionPtr ver;
100
101 ver = drmGetVersion(fd);
102 if (ver == NULL)
103 return NULL;
104
105 drm_ver.major = ver->version_major;
106 drm_ver.minor = ver->version_minor;
107 drm_ver.patch_level = 0; /* ??? */
108
109 drmFreeVersion(ver);
110 if (!vmw_dri1_check_version(&drm_ver, &drm_required,
111 &drm_compat, "vmwgfx drm driver"))
112 return NULL;
113
114 vws = vmw_winsys_create(fd);
115 if (!vws)
116 goto out_no_vws;
117
118 /* XXX do this properly */
119 vws->base.surface_from_handle = vws->base.have_gb_objects ?
120 vmw_drm_gb_surface_from_handle : vmw_drm_surface_from_handle;
121 vws->base.surface_get_handle = vmw_drm_surface_get_handle;
122
123 return &vws->base;
124
125 out_no_vws:
126 return NULL;
127 }
128
129 /**
130 * vmw_drm_gb_surface_from_handle - Create a shared surface
131 *
132 * @sws: Screen to register the surface with.
133 * @whandle: struct winsys_handle identifying the kernel surface object
134 * @format: On successful return points to a value describing the
135 * surface format.
136 *
137 * Returns a refcounted pointer to a struct svga_winsys_surface
138 * embedded in a struct vmw_svga_winsys_surface on success or NULL
139 * on failure.
140 */
141 static struct svga_winsys_surface *
vmw_drm_gb_surface_from_handle(struct svga_winsys_screen * sws,struct winsys_handle * whandle,SVGA3dSurfaceFormat * format)142 vmw_drm_gb_surface_from_handle(struct svga_winsys_screen *sws,
143 struct winsys_handle *whandle,
144 SVGA3dSurfaceFormat *format)
145 {
146 struct vmw_svga_winsys_surface *vsrf;
147 struct svga_winsys_surface *ssrf;
148 struct vmw_winsys_screen *vws = vmw_winsys_screen(sws);
149 SVGA3dSurfaceAllFlags flags;
150 uint32_t mip_levels;
151 struct vmw_buffer_desc desc;
152 struct pb_manager *provider = vws->pools.gmr;
153 struct pb_buffer *pb_buf;
154 uint32_t handle;
155 int ret;
156
157 if (whandle->offset != 0) {
158 fprintf(stderr, "Attempt to import unsupported winsys offset %u\n",
159 whandle->offset);
160 return NULL;
161 }
162
163 ret = vmw_ioctl_gb_surface_ref(vws, whandle, &flags, format,
164 &mip_levels, &handle, &desc.region);
165
166 if (ret) {
167 fprintf(stderr, "Failed referencing shared surface. SID %d.\n"
168 "Error %d (%s).\n",
169 whandle->handle, ret, strerror(-ret));
170 return NULL;
171 }
172
173 if (mip_levels != 1) {
174 fprintf(stderr, "Incorrect number of mipmap levels on shared surface."
175 " SID %d, levels %d\n",
176 whandle->handle, mip_levels);
177 goto out_mip;
178 }
179
180 vsrf = CALLOC_STRUCT(vmw_svga_winsys_surface);
181 if (!vsrf)
182 goto out_mip;
183
184 pipe_reference_init(&vsrf->refcnt, 1);
185 p_atomic_set(&vsrf->validated, 0);
186 vsrf->screen = vws;
187 vsrf->sid = handle;
188 vsrf->size = vmw_region_size(desc.region);
189
190 /*
191 * Synchronize backing buffers of shared surfaces using the
192 * kernel, since we don't pass fence objects around between
193 * processes.
194 */
195 desc.pb_desc.alignment = 4096;
196 desc.pb_desc.usage = VMW_BUFFER_USAGE_SHARED | VMW_BUFFER_USAGE_SYNC;
197 pb_buf = provider->create_buffer(provider, vsrf->size, &desc.pb_desc);
198 vsrf->buf = vmw_svga_winsys_buffer_wrap(pb_buf);
199 if (!vsrf->buf)
200 goto out_no_buf;
201 ssrf = svga_winsys_surface(vsrf);
202
203 return ssrf;
204
205 out_no_buf:
206 FREE(vsrf);
207 out_mip:
208 vmw_ioctl_region_destroy(desc.region);
209 vmw_ioctl_surface_destroy(vws, whandle->handle);
210 return NULL;
211 }
212
213 static struct svga_winsys_surface *
vmw_drm_surface_from_handle(struct svga_winsys_screen * sws,struct winsys_handle * whandle,SVGA3dSurfaceFormat * format)214 vmw_drm_surface_from_handle(struct svga_winsys_screen *sws,
215 struct winsys_handle *whandle,
216 SVGA3dSurfaceFormat *format)
217 {
218 struct vmw_svga_winsys_surface *vsrf;
219 struct svga_winsys_surface *ssrf;
220 struct vmw_winsys_screen *vws = vmw_winsys_screen(sws);
221 union drm_vmw_surface_reference_arg arg;
222 struct drm_vmw_surface_arg *req = &arg.req;
223 struct drm_vmw_surface_create_req *rep = &arg.rep;
224 uint32_t handle = 0;
225 struct drm_vmw_size size;
226 SVGA3dSize base_size;
227 int ret;
228 int i;
229
230 if (whandle->offset != 0) {
231 fprintf(stderr, "Attempt to import unsupported winsys offset %u\n",
232 whandle->offset);
233 return NULL;
234 }
235
236 switch (whandle->type) {
237 case WINSYS_HANDLE_TYPE_SHARED:
238 case WINSYS_HANDLE_TYPE_KMS:
239 handle = whandle->handle;
240 break;
241 case WINSYS_HANDLE_TYPE_FD:
242 ret = drmPrimeFDToHandle(vws->ioctl.drm_fd, whandle->handle,
243 &handle);
244 if (ret) {
245 vmw_error("Failed to get handle from prime fd %d.\n",
246 (int) whandle->handle);
247 return NULL;
248 }
249 break;
250 default:
251 vmw_error("Attempt to import unsupported handle type %d.\n",
252 whandle->type);
253 return NULL;
254 }
255
256 memset(&arg, 0, sizeof(arg));
257 req->sid = handle;
258 rep->size_addr = (unsigned long)&size;
259
260 ret = drmCommandWriteRead(vws->ioctl.drm_fd, DRM_VMW_REF_SURFACE,
261 &arg, sizeof(arg));
262
263 /*
264 * Need to close the handle we got from prime.
265 */
266 if (whandle->type == WINSYS_HANDLE_TYPE_FD)
267 vmw_ioctl_surface_destroy(vws, handle);
268
269 if (ret) {
270 /*
271 * Any attempt to share something other than a surface, like a dumb
272 * kms buffer, should fail here.
273 */
274 vmw_error("Failed referencing shared surface. SID %d.\n"
275 "Error %d (%s).\n",
276 handle, ret, strerror(-ret));
277 return NULL;
278 }
279
280 if (rep->mip_levels[0] != 1) {
281 vmw_error("Incorrect number of mipmap levels on shared surface."
282 " SID %d, levels %d\n",
283 handle, rep->mip_levels[0]);
284 goto out_mip;
285 }
286
287 for (i=1; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
288 if (rep->mip_levels[i] != 0) {
289 vmw_error("Incorrect number of faces levels on shared surface."
290 " SID %d, face %d present.\n",
291 handle, i);
292 goto out_mip;
293 }
294 }
295
296 vsrf = CALLOC_STRUCT(vmw_svga_winsys_surface);
297 if (!vsrf)
298 goto out_mip;
299
300 pipe_reference_init(&vsrf->refcnt, 1);
301 p_atomic_set(&vsrf->validated, 0);
302 vsrf->screen = vws;
303 vsrf->sid = handle;
304 ssrf = svga_winsys_surface(vsrf);
305 *format = rep->format;
306
307 /* Estimate usage, for early flushing. */
308
309 base_size.width = size.width;
310 base_size.height = size.height;
311 base_size.depth = size.depth;
312 vsrf->size = svga3dsurface_get_serialized_size(rep->format, base_size,
313 rep->mip_levels[0],
314 FALSE);
315
316 return ssrf;
317
318 out_mip:
319 vmw_ioctl_surface_destroy(vws, handle);
320
321 return NULL;
322 }
323
324 static boolean
vmw_drm_surface_get_handle(struct svga_winsys_screen * sws,struct svga_winsys_surface * surface,unsigned stride,struct winsys_handle * whandle)325 vmw_drm_surface_get_handle(struct svga_winsys_screen *sws,
326 struct svga_winsys_surface *surface,
327 unsigned stride,
328 struct winsys_handle *whandle)
329 {
330 struct vmw_winsys_screen *vws = vmw_winsys_screen(sws);
331 struct vmw_svga_winsys_surface *vsrf;
332 int ret;
333
334 if (!surface)
335 return FALSE;
336
337 vsrf = vmw_svga_winsys_surface(surface);
338 whandle->handle = vsrf->sid;
339 whandle->stride = stride;
340 whandle->offset = 0;
341
342 switch (whandle->type) {
343 case WINSYS_HANDLE_TYPE_SHARED:
344 case WINSYS_HANDLE_TYPE_KMS:
345 whandle->handle = vsrf->sid;
346 break;
347 case WINSYS_HANDLE_TYPE_FD:
348 ret = drmPrimeHandleToFD(vws->ioctl.drm_fd, vsrf->sid, DRM_CLOEXEC,
349 (int *)&whandle->handle);
350 if (ret) {
351 vmw_error("Failed to get file descriptor from prime.\n");
352 return FALSE;
353 }
354 break;
355 default:
356 vmw_error("Attempt to export unsupported handle type %d.\n",
357 whandle->type);
358 return FALSE;
359 }
360
361 return TRUE;
362 }
363