src/mesa/drivers/dri/r200/r200_ioctl.h

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /*
  31  * Authors:
  32  *   Keith Whitwell <keith@tungstengraphics.com>
  33  */
  34
  35 #ifndef __R200_IOCTL_H__
  36 #define __R200_IOCTL_H__
  37
  38 #include "main/simple_list.h"
  39 #include "radeon_dri.h"
  40 #include "r200_lock.h"
  41
  42 #include "xf86drm.h"
  43 #include "drm.h"
  44 #include "radeon_drm.h"
  45
  46 extern void r200EmitState( r200ContextPtr rmesa );
  47 extern void r200EmitVertexAOS( r200ContextPtr rmesa,
  48                                  GLuint vertex_size,
  49                                  GLuint offset );
  50
  51 extern void r200EmitVbufPrim( r200ContextPtr rmesa,
  52                                 GLuint primitive,
  53                                 GLuint vertex_nr );
  54
  55 extern void r200FlushElts( r200ContextPtr rmesa );
  56
  57 extern GLushort *r200AllocEltsOpenEnded( r200ContextPtr rmesa,
  58                                            GLuint primitive,
  59                                            GLuint min_nr );
  60
  61 extern void r200EmitAOS( r200ContextPtr rmesa,
  62                            struct r200_dma_region **regions,
  63                            GLuint n,
  64                            GLuint offset );
  65
  66 extern void r200EmitBlit( r200ContextPtr rmesa,
  67                           GLuint color_fmt,
  68                           GLuint src_pitch,
  69                           GLuint src_offset,
  70                           GLuint dst_pitch,
  71                           GLuint dst_offset,
  72                           GLint srcx, GLint srcy,
  73                           GLint dstx, GLint dsty,
  74                           GLuint w, GLuint h );
  75
  76 extern void r200EmitWait( r200ContextPtr rmesa, GLuint flags );
  77
  78 extern void r200FlushCmdBuf( r200ContextPtr rmesa, const char * );
  79 extern int r200FlushCmdBufLocked( r200ContextPtr rmesa, const char * caller );
  80
  81 extern void r200RefillCurrentDmaRegion( r200ContextPtr rmesa );
  82
  83 extern void r200AllocDmaRegion( r200ContextPtr rmesa,
  84                                   struct r200_dma_region *region,
  85                                   int bytes,
  86                                   int alignment );
  87
  88 extern void r200ReleaseDmaRegion( r200ContextPtr rmesa,
  89                                     struct r200_dma_region *region,
  90                                     const char *caller );
  91
  92 extern void r200CopyBuffer( __DRIdrawablePrivate *drawable,
  93                             const drm_clip_rect_t      *rect);
  94 extern void r200PageFlip( __DRIdrawablePrivate *drawable );
  95 extern void r200Flush( GLcontext *ctx );
  96 extern void r200Finish( GLcontext *ctx );
  97 extern void r200WaitForIdleLocked( r200ContextPtr rmesa );
  98 extern void r200WaitForVBlank( r200ContextPtr rmesa );
  99 extern void r200InitIoctlFuncs( struct dd_function_table *functions );
 100
 101 extern void *r200AllocateMemoryMESA( __DRIscreen *screen, GLsizei size, GLfloat readfreq,
 102                                    GLfloat writefreq, GLfloat priority );
 103 extern void r200FreeMemoryMESA( __DRIscreen *screen, GLvoid *pointer );
 104 extern GLuint r200GetMemoryOffsetMESA( __DRIscreen *screen, const GLvoid *pointer );
 105
 106 extern GLboolean r200IsGartMemory( r200ContextPtr rmesa, const GLvoid *pointer,
 107                                    GLint size );
 108
 109 extern GLuint r200GartOffsetFromVirtual( r200ContextPtr rmesa,
 110                                          const GLvoid *pointer );
 111
 112 void r200SetUpAtomList( r200ContextPtr rmesa );
 113
 114 /* ================================================================
 115  * Helper macros:
 116  */
 117
 118 /* Close off the last primitive, if it exists.
 119  */
 120 #define R200_NEWPRIM( rmesa )                   \
 121 do {                                            \
 122    if ( rmesa->dma.flush )                      \
 123       rmesa->dma.flush( rmesa );        \
 124 } while (0)
 125
 126 /* Can accomodate several state changes and primitive changes without
 127  * actually firing the buffer.
 128  */
 129 #define R200_STATECHANGE( rmesa, ATOM )                 \
 130 do {                                                            \
 131    R200_NEWPRIM( rmesa );                                       \
 132    rmesa->hw.ATOM.dirty = GL_TRUE;                              \
 133    rmesa->hw.is_dirty = GL_TRUE;                                \
 134 } while (0)
 135
 136 #define R200_DB_STATE( ATOM )                           \
 137    memcpy( rmesa->hw.ATOM.lastcmd, rmesa->hw.ATOM.cmd,  \
 138            rmesa->hw.ATOM.cmd_size * 4)
 139
 140 static INLINE int R200_DB_STATECHANGE(
 141    r200ContextPtr rmesa,
 142    struct r200_state_atom *atom )
 143 {
 144    if (memcmp(atom->cmd, atom->lastcmd, atom->cmd_size*4)) {
 145       int *tmp;
 146       R200_NEWPRIM( rmesa );
 147       atom->dirty = GL_TRUE;
 148       rmesa->hw.is_dirty = GL_TRUE;
 149       tmp = atom->cmd;
 150       atom->cmd = atom->lastcmd;
 151       atom->lastcmd = tmp;
 152       return 1;
 153    }
 154    else
 155       return 0;
 156 }
 157
 158
 159 /* Fire the buffered vertices no matter what.
 160  */
 161 #define R200_FIREVERTICES( rmesa )                      \
 162 do {                                                    \
 163    if ( rmesa->store.cmd_used || rmesa->dma.flush ) {   \
 164       r200Flush( rmesa->glCtx );                        \
 165    }                                                    \
 166 } while (0)
 167
 168 /* Command lengths.  Note that any time you ensure ELTS_BUFSZ or VBUF_BUFSZ
 169  * are available, you will also be adding an rmesa->state.max_state_size because
 170  * r200EmitState is called from within r200EmitVbufPrim and r200FlushElts.
 171  */
 172 #define AOS_BUFSZ(nr)   ((3 + ((nr / 2) * 3) + ((nr & 1) * 2)) * sizeof(int))
 173 #define VERT_AOS_BUFSZ  (5 * sizeof(int))
 174 #define ELTS_BUFSZ(nr)  (12 + nr * 2)
 175 #define VBUF_BUFSZ      (3 * sizeof(int))
 176
 177 /* Ensure that a minimum amount of space is available in the command buffer.
 178  * This is used to ensure atomicity of state updates with the rendering requests
 179  * that rely on them.
 180  *
 181  * An alternative would be to implement a "soft lock" such that when the buffer
 182  * wraps at an inopportune time, we grab the lock, flush the current buffer,
 183  * and hang on to the lock until the critical section is finished and we flush
 184  * the buffer again and unlock.
 185  */
 186 static INLINE void r200EnsureCmdBufSpace( r200ContextPtr rmesa, int bytes )
 187 {
 188    if (rmesa->store.cmd_used + bytes > R200_CMD_BUF_SZ)
 189       r200FlushCmdBuf( rmesa, __FUNCTION__ );
 190    assert( bytes <= R200_CMD_BUF_SZ );
 191 }
 192
 193 /* Alloc space in the command buffer
 194  */
 195 static INLINE char *r200AllocCmdBuf( r200ContextPtr rmesa,
 196                                          int bytes, const char *where )
 197 {
 198    char * head;
 199
 200    if (rmesa->store.cmd_used + bytes > R200_CMD_BUF_SZ)
 201       r200FlushCmdBuf( rmesa, where );
 202
 203    head = rmesa->store.cmd_buf + rmesa->store.cmd_used;
 204    rmesa->store.cmd_used += bytes;
 205    assert( rmesa->store.cmd_used <= R200_CMD_BUF_SZ );
 206    return head;
 207 }
 208
 209 #endif /* __R200_IOCTL_H__ */