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 "svga_cmd.h"
28 #include "util/u_debug.h"
29 #include "util/u_memory.h"
30 #include "pipe/p_defines.h"
31 #include "vmw_surface.h"
32 #include "vmw_screen.h"
33 #include "vmw_buffer.h"
34 #include "vmw_context.h"
35 #include "pipebuffer/pb_bufmgr.h"
36
37 void
vmw_svga_winsys_surface_init(struct svga_winsys_screen * sws,struct svga_winsys_surface * srf,unsigned surf_size,SVGA3dSurfaceAllFlags flags)38 vmw_svga_winsys_surface_init(struct svga_winsys_screen *sws,
39 struct svga_winsys_surface *srf,
40 unsigned surf_size, SVGA3dSurfaceAllFlags flags)
41 {
42 struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf);
43 void *data = NULL;
44 struct pb_buffer *pb_buf;
45 uint32_t pb_flags;
46 struct vmw_winsys_screen *vws = vsrf->screen;
47 pb_flags = PIPE_MAP_WRITE | PIPE_MAP_DISCARD_WHOLE_RESOURCE;
48
49 struct pb_manager *provider;
50 struct pb_desc desc;
51
52 mtx_lock(&vsrf->mutex);
53 data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf, pb_flags);
54 if (data)
55 goto out_mapped;
56
57 provider = vws->pools.mob_fenced;
58 memset(&desc, 0, sizeof(desc));
59 desc.alignment = 4096;
60 pb_buf = provider->create_buffer(provider, vsrf->size, &desc);
61 if (pb_buf != NULL) {
62 struct svga_winsys_buffer *vbuf =
63 vmw_svga_winsys_buffer_wrap(pb_buf);
64
65 data = vmw_svga_winsys_buffer_map(&vws->base, vbuf, pb_flags);
66 if (data) {
67 vsrf->rebind = TRUE;
68 if (vsrf->buf)
69 vmw_svga_winsys_buffer_destroy(&vws->base, vsrf->buf);
70 vsrf->buf = vbuf;
71 goto out_mapped;
72 } else {
73 vmw_svga_winsys_buffer_destroy(&vws->base, vbuf);
74 goto out_unlock;
75 }
76 }
77 else {
78 /* Cannot create a buffer, just unlock */
79 goto out_unlock;
80 }
81
82 out_mapped:
83 mtx_unlock(&vsrf->mutex);
84
85 if (data) {
86 if (flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT) {
87 memset(data, 0, surf_size + sizeof(SVGA3dDXSOState));
88 }
89 else {
90 memset(data, 0, surf_size);
91 }
92 }
93
94 mtx_lock(&vsrf->mutex);
95 vmw_svga_winsys_buffer_unmap(&vsrf->screen->base, vsrf->buf);
96 out_unlock:
97 mtx_unlock(&vsrf->mutex);
98 }
99
100
101
102 void *
vmw_svga_winsys_surface_map(struct svga_winsys_context * swc,struct svga_winsys_surface * srf,unsigned flags,boolean * retry,boolean * rebind)103 vmw_svga_winsys_surface_map(struct svga_winsys_context *swc,
104 struct svga_winsys_surface *srf,
105 unsigned flags, boolean *retry,
106 boolean *rebind)
107 {
108 struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf);
109 void *data = NULL;
110 struct pb_buffer *pb_buf;
111 uint32_t pb_flags;
112 struct vmw_winsys_screen *vws = vsrf->screen;
113
114 *retry = FALSE;
115 *rebind = FALSE;
116 assert((flags & (PIPE_MAP_READ | PIPE_MAP_WRITE)) != 0);
117 mtx_lock(&vsrf->mutex);
118
119 if (vsrf->mapcount) {
120 /* Other mappers will get confused if we discard. */
121 flags &= ~PIPE_MAP_DISCARD_WHOLE_RESOURCE;
122 }
123
124 vsrf->rebind = FALSE;
125
126 /*
127 * If we intend to read, there's no point discarding the
128 * data if busy.
129 */
130 if (flags & PIPE_MAP_READ || vsrf->shared)
131 flags &= ~PIPE_MAP_DISCARD_WHOLE_RESOURCE;
132
133 /*
134 * Discard is a hint to a synchronized map.
135 */
136 if (flags & PIPE_MAP_DISCARD_WHOLE_RESOURCE)
137 flags &= ~PIPE_MAP_UNSYNCHRONIZED;
138
139 /*
140 * The surface is allowed to be referenced on the command stream iff
141 * we're mapping unsynchronized or discard. This is an early check.
142 * We need to recheck after a failing discard map.
143 */
144 if (!(flags & (PIPE_MAP_DISCARD_WHOLE_RESOURCE |
145 PIPE_MAP_UNSYNCHRONIZED)) &&
146 p_atomic_read(&vsrf->validated)) {
147 *retry = TRUE;
148 goto out_unlock;
149 }
150
151 pb_flags = flags & (PIPE_MAP_READ_WRITE | PIPE_MAP_UNSYNCHRONIZED |
152 PIPE_MAP_PERSISTENT);
153
154 if (flags & PIPE_MAP_DISCARD_WHOLE_RESOURCE) {
155 struct pb_manager *provider;
156 struct pb_desc desc;
157
158 /*
159 * First, if possible, try to map existing storage with DONTBLOCK.
160 */
161 if (!p_atomic_read(&vsrf->validated)) {
162 data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf,
163 PIPE_MAP_DONTBLOCK | pb_flags);
164 if (data)
165 goto out_mapped;
166 }
167
168 /*
169 * Attempt to get a new buffer.
170 */
171 provider = vws->pools.mob_fenced;
172 memset(&desc, 0, sizeof(desc));
173 desc.alignment = 4096;
174 pb_buf = provider->create_buffer(provider, vsrf->size, &desc);
175 if (pb_buf != NULL) {
176 struct svga_winsys_buffer *vbuf =
177 vmw_svga_winsys_buffer_wrap(pb_buf);
178
179 data = vmw_svga_winsys_buffer_map(&vws->base, vbuf, pb_flags);
180 if (data) {
181 vsrf->rebind = TRUE;
182 /*
183 * We've discarded data on this surface and thus
184 * it's data is no longer consider referenced.
185 */
186 vmw_swc_surface_clear_reference(swc, vsrf);
187 if (vsrf->buf)
188 vmw_svga_winsys_buffer_destroy(&vws->base, vsrf->buf);
189 vsrf->buf = vbuf;
190
191 /* Rebind persistent maps immediately */
192 if (flags & PIPE_MAP_PERSISTENT) {
193 *rebind = TRUE;
194 vsrf->rebind = FALSE;
195 }
196 goto out_mapped;
197 } else
198 vmw_svga_winsys_buffer_destroy(&vws->base, vbuf);
199 }
200 /*
201 * We couldn't get and map a new buffer for some reason.
202 * Fall through to an ordinary map.
203 * But tell pipe driver to flush now if already on validate list,
204 * Otherwise we'll overwrite previous contents.
205 */
206 if (!(flags & PIPE_MAP_UNSYNCHRONIZED) &&
207 p_atomic_read(&vsrf->validated)) {
208 *retry = TRUE;
209 goto out_unlock;
210 }
211 }
212
213 pb_flags |= (flags & PIPE_MAP_DONTBLOCK);
214 data = vmw_svga_winsys_buffer_map(&vws->base, vsrf->buf, pb_flags);
215 if (data == NULL)
216 goto out_unlock;
217
218 out_mapped:
219 ++vsrf->mapcount;
220 vsrf->data = data;
221 vsrf->map_mode = flags & (PIPE_MAP_READ | PIPE_MAP_WRITE);
222 out_unlock:
223 mtx_unlock(&vsrf->mutex);
224 return data;
225 }
226
227
228 void
vmw_svga_winsys_surface_unmap(struct svga_winsys_context * swc,struct svga_winsys_surface * srf,boolean * rebind)229 vmw_svga_winsys_surface_unmap(struct svga_winsys_context *swc,
230 struct svga_winsys_surface *srf,
231 boolean *rebind)
232 {
233 struct vmw_svga_winsys_surface *vsrf = vmw_svga_winsys_surface(srf);
234 mtx_lock(&vsrf->mutex);
235 if (--vsrf->mapcount == 0) {
236 *rebind = vsrf->rebind;
237 vsrf->rebind = FALSE;
238 } else {
239 *rebind = FALSE;
240 }
241 vmw_svga_winsys_buffer_unmap(&vsrf->screen->base, vsrf->buf);
242 mtx_unlock(&vsrf->mutex);
243 }
244
245 void
vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface ** pdst,struct vmw_svga_winsys_surface * src)246 vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface **pdst,
247 struct vmw_svga_winsys_surface *src)
248 {
249 struct pipe_reference *src_ref;
250 struct pipe_reference *dst_ref;
251 struct vmw_svga_winsys_surface *dst;
252
253 if(pdst == NULL || *pdst == src)
254 return;
255
256 dst = *pdst;
257
258 src_ref = src ? &src->refcnt : NULL;
259 dst_ref = dst ? &dst->refcnt : NULL;
260
261 if (pipe_reference(dst_ref, src_ref)) {
262 if (dst->buf)
263 vmw_svga_winsys_buffer_destroy(&dst->screen->base, dst->buf);
264 vmw_ioctl_surface_destroy(dst->screen, dst->sid);
265 #ifdef DEBUG
266 /* to detect dangling pointers */
267 assert(p_atomic_read(&dst->validated) == 0);
268 dst->sid = SVGA3D_INVALID_ID;
269 #endif
270 mtx_destroy(&dst->mutex);
271 FREE(dst);
272 }
273
274 *pdst = src;
275 }
276