1 /**************************************************************************
3 Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
4 Copyright 2003 Eric Anholt
7 Permission is hereby granted, free of charge, to any person obtaining a
8 copy of this software and associated documentation files (the "Software"),
9 to deal in the Software without restriction, including without limitation
10 on the rights to use, copy, modify, merge, publish, distribute, sub
11 license, and/or sell copies of the Software, and to permit persons to whom
12 the Software is furnished to do so, subject to the following conditions:
14 The above copyright notice and this permission notice (including the next
15 paragraph) shall be included in all copies or substantial portions of the
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
27 /* $XFree86: xc/lib/GL/mesa/src/drv/sis/sis_alloc.c,v 1.7 2001/01/08 01:07:29 martin Exp $ */
31 * Sung-Ching Lin <sclin@sis.com.tw>
32 * Eric Anholt <anholt@FreeBSD.org>
35 #include "sis_context.h"
36 #include "sis_alloc.h"
38 #include "sis_common.h"
42 #define Z_BUFFER_HW_ALIGNMENT 16
43 #define Z_BUFFER_HW_PLUS (16 + 4)
45 /* 3D engine uses 2, and bitblt uses 4 */
46 #define DRAW_BUFFER_HW_ALIGNMENT 16
47 #define DRAW_BUFFER_HW_PLUS (16 + 4)
49 #define ALIGNMENT(value, align) (((value) + (align) - 1) / (align) * (align))
51 static int _total_video_memory_used
= 0;
52 static int _total_video_memory_count
= 0;
55 sisAllocFB( sisContextPtr smesa
, GLuint size
, void **handle
)
59 _total_video_memory_used
+= size
;
61 fb
.context
= smesa
->hHWContext
;
63 if (drmCommandWriteRead( smesa
->driFd
, DRM_SIS_FB_ALLOC
, &fb
,
64 sizeof(drm_sis_mem_t
) ) || fb
.offset
== 0)
68 *handle
= (void *)fb
.free
;
70 if (SIS_VERBOSE
& VERBOSE_SIS_MEMORY
) {
71 fprintf(stderr
, "sisAllocFB: size=%d, offset=%lu, pid=%d, count=%d\n",
72 size
, fb
.offset
, (GLint
)getpid(),
73 ++_total_video_memory_count
);
76 return (void *)(smesa
->FbBase
+ fb
.offset
);
80 sisFreeFB( sisContextPtr smesa
, void *handle
)
84 if (SIS_VERBOSE
& VERBOSE_SIS_MEMORY
) {
85 fprintf(stderr
, "sisFreeFB: free=%p, pid=%d, count=%d\n",
86 handle
, (GLint
)getpid(), --_total_video_memory_count
);
89 fb
.context
= smesa
->hHWContext
;
91 drmCommandWrite( smesa
->driFd
, DRM_SIS_FB_FREE
, &fb
, sizeof(drm_sis_mem_t
) );
95 sisAllocAGP( sisContextPtr smesa
, GLuint size
, void **handle
)
99 if (smesa
->AGPSize
== 0)
102 agp
.context
= smesa
->hHWContext
;
104 if (drmCommandWriteRead( smesa
->driFd
, DRM_SIS_AGP_ALLOC
, &agp
,
105 sizeof(drm_sis_mem_t
) ) || agp
.offset
== 0)
109 *handle
= (void *)agp
.free
;
111 if (SIS_VERBOSE
& VERBOSE_SIS_MEMORY
) {
112 fprintf(stderr
, "sisAllocAGP: size=%u, offset=%lu, pid=%d, count=%d\n",
113 size
, agp
.offset
, (GLint
)getpid(),
114 ++_total_video_memory_count
);
117 return (void *)(smesa
->AGPBase
+ agp
.offset
);
121 sisFreeAGP( sisContextPtr smesa
, void *handle
)
125 if (SIS_VERBOSE
& VERBOSE_SIS_MEMORY
) {
126 fprintf(stderr
, "sisFreeAGP: free=%p, pid=%d, count=%d\n",
127 handle
, (GLint
)getpid(), --_total_video_memory_count
);
130 agp
.context
= smesa
->hHWContext
;
132 drmCommandWrite( smesa
->driFd
, DRM_SIS_AGP_FREE
, &agp
,
133 sizeof(drm_sis_mem_t
) );
137 sisAllocZStencilBuffer( sisContextPtr smesa
)
145 z_depth
= ( smesa
->glCtx
->Visual
.depthBits
+
146 smesa
->glCtx
->Visual
.stencilBits
) / 8;
148 width2
= ALIGNMENT( smesa
->width
* z_depth
, 4 );
150 totalBytes
= smesa
->height
* width2
+ Z_BUFFER_HW_PLUS
;
152 addr
= sisAllocFB( smesa
, totalBytes
, &smesa
->zbFree
);
154 sis_fatal_error("Failure to allocate Z buffer.\n");
156 if (SIS_VERBOSE
& VERBOSE_SIS_BUFFER
) {
157 fprintf(stderr
, "sis_alloc_z_stencil_buffer: addr=%p\n", addr
);
160 addr
= (GLubyte
*)ALIGNMENT( (unsigned long)addr
, Z_BUFFER_HW_ALIGNMENT
);
162 smesa
->depthbuffer
= (void *) addr
;
163 smesa
->depthPitch
= width2
;
164 smesa
->depthOffset
= (unsigned long)addr
- (unsigned long)smesa
->FbBase
;
166 /* set pZClearPacket */
167 memset( &smesa
->zClearPacket
, 0, sizeof(ENGPACKET
) );
169 smesa
->zClearPacket
.dwSrcPitch
= (z_depth
== 2) ? 0x80000000 : 0xf0000000;
170 smesa
->zClearPacket
.dwDestBaseAddr
= (unsigned long)(addr
-
171 (unsigned long)smesa
->FbBase
);
172 smesa
->zClearPacket
.wDestPitch
= width2
;
173 smesa
->zClearPacket
.stdwDestPos
.wY
= 0;
174 smesa
->zClearPacket
.stdwDestPos
.wX
= 0;
176 smesa
->zClearPacket
.wDestHeight
= smesa
->virtualY
;
177 smesa
->zClearPacket
.stdwDim
.wWidth
= (GLshort
)width2
/ z_depth
;
178 smesa
->zClearPacket
.stdwDim
.wHeight
= (GLshort
)smesa
->height
;
179 smesa
->zClearPacket
.stdwCmd
.cRop
= 0xf0;
181 if (smesa
->blockWrite
)
182 smesa
->zClearPacket
.stdwCmd
.cCmd0
= CMD0_PAT_FG_COLOR
;
184 smesa
->zClearPacket
.stdwCmd
.cCmd0
= 0;
185 smesa
->zClearPacket
.stdwCmd
.cCmd1
= CMD1_DIR_X_INC
| CMD1_DIR_Y_INC
;
189 sisFreeZStencilBuffer( sisContextPtr smesa
)
191 sisFreeFB( smesa
, smesa
->zbFree
);
192 smesa
->zbFree
= NULL
;
193 smesa
->depthbuffer
= NULL
;
197 sisAllocBackbuffer( sisContextPtr smesa
)
199 GLuint depth
= smesa
->bytesPerPixel
;
204 width2
= (depth
== 2) ? ALIGNMENT (smesa
->width
, 2) : smesa
->width
;
205 size
= width2
* smesa
->height
* depth
+ DRAW_BUFFER_HW_PLUS
;
207 /* Fixme: unique context alloc/free back-buffer? */
208 addr
= sisAllocFB( smesa
, size
, &smesa
->bbFree
);
210 sis_fatal_error("Failure to allocate back buffer.\n");
212 addr
= (char *)ALIGNMENT( (unsigned long)addr
, DRAW_BUFFER_HW_ALIGNMENT
);
214 smesa
->backbuffer
= addr
;
215 smesa
->backOffset
= (unsigned long)(addr
- (unsigned long)smesa
->FbBase
);
216 smesa
->backPitch
= width2
* depth
;
218 memset ( &smesa
->cbClearPacket
, 0, sizeof(ENGPACKET
) );
220 smesa
->cbClearPacket
.dwSrcPitch
= (depth
== 2) ? 0x80000000 : 0xf0000000;
221 smesa
->cbClearPacket
.dwDestBaseAddr
= smesa
->backOffset
;
222 smesa
->cbClearPacket
.wDestPitch
= smesa
->backPitch
;
223 smesa
->cbClearPacket
.stdwDestPos
.wY
= 0;
224 smesa
->cbClearPacket
.stdwDestPos
.wX
= 0;
226 smesa
->cbClearPacket
.wDestHeight
= smesa
->virtualY
;
227 smesa
->cbClearPacket
.stdwDim
.wWidth
= (GLshort
) width2
;
228 smesa
->cbClearPacket
.stdwDim
.wHeight
= (GLshort
) smesa
->height
;
229 smesa
->cbClearPacket
.stdwCmd
.cRop
= 0xf0;
231 if (smesa
->blockWrite
)
232 smesa
->cbClearPacket
.stdwCmd
.cCmd0
= (GLbyte
)(CMD0_PAT_FG_COLOR
);
234 smesa
->cbClearPacket
.stdwCmd
.cCmd0
= 0;
235 smesa
->cbClearPacket
.stdwCmd
.cCmd1
= CMD1_DIR_X_INC
| CMD1_DIR_Y_INC
;
239 sisFreeBackbuffer( sisContextPtr smesa
)
241 sisFreeFB( smesa
, smesa
->bbFree
);
242 smesa
->backbuffer
= NULL
;