src/gallium/winsys/svga/drm/vmw_surface.h

   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
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  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  * Surfaces for VMware SVGA winsys.
  29  *
  30  * @author Jose Fonseca <jfonseca@vmware.com>
  31  */
  32
  33
  34 #ifndef VMW_SURFACE_H_
  35 #define VMW_SURFACE_H_
  36
  37
  38 #include "pipe/p_compiler.h"
  39 #include "util/u_atomic.h"
  40 #include "util/u_inlines.h"
  41 #include "os/os_thread.h"
  42 #include "pipebuffer/pb_buffer.h"
  43
  44 #define VMW_MAX_PRESENTS 3
  45
  46
  47
  48 struct vmw_svga_winsys_surface
  49 {
  50    int32_t validated; /* atomic */
  51    struct pipe_reference refcnt;
  52
  53    struct vmw_winsys_screen *screen;
  54    uint32_t sid;
  55
  56    /* FIXME: make this thread safe */
  57    unsigned next_present_no;
  58    uint32_t present_fences[VMW_MAX_PRESENTS];
  59
  60    pipe_mutex mutex;
  61    struct svga_winsys_buffer *buf; /* Current backing guest buffer */
  62    uint32_t mapcount; /* Number of mappers */
  63    uint32_t map_mode; /* PIPE_TRANSFER_[READ|WRITE] */
  64    void *data; /* Pointer to data if mapcount != 0*/
  65    boolean shared; /* Shared surface. Never discard */
  66    uint32_t size; /* Size of backing buffer */
  67    boolean rebind; /* Surface needs a rebind after next unmap */
  68 };
  69
  70
  71 static INLINE struct svga_winsys_surface *
  72 svga_winsys_surface(struct vmw_svga_winsys_surface *surf)
  73 {
  74    assert(!surf || surf->sid != SVGA3D_INVALID_ID);
  75    return (struct svga_winsys_surface *)surf;
  76 }
  77
  78
  79 static INLINE struct vmw_svga_winsys_surface *
  80 vmw_svga_winsys_surface(struct svga_winsys_surface *surf)
  81 {
  82    return (struct vmw_svga_winsys_surface *)surf;
  83 }
  84
  85
  86 void
  87 vmw_svga_winsys_surface_reference(struct vmw_svga_winsys_surface **pdst,
  88                                   struct vmw_svga_winsys_surface *src);
  89 void *
  90 vmw_svga_winsys_surface_map(struct svga_winsys_context *swc,
  91                             struct svga_winsys_surface *srf,
  92                             unsigned flags, boolean *retry);
  93 void
  94 vmw_svga_winsys_surface_unmap(struct svga_winsys_context *swc,
  95                               struct svga_winsys_surface *srf,
  96                               boolean *rebind);
  97
  98 #endif /* VMW_SURFACE_H_ */