summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/unichrome/via_ioctl.h
blob: 44fc439c9fdf564fc17a758143f3e11504a62359 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sub license,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#ifndef _VIAIOCTL_H
#define _VIAIOCTL_H

#include "via_context.h"


void viaFinishPrimitive(struct via_context *vmesa);
void viaFlushDma(struct via_context *vmesa);
void viaFlushDmaLocked(struct via_context *vmesa, GLuint flags);

void viaInitIoctlFuncs(GLcontext *ctx);
void viaCopyBuffer(__DRIdrawablePrivate *dpriv);
void viaPageFlip(__DRIdrawablePrivate *dpriv);
void viaCheckDma(struct via_context *vmesa, GLuint bytes);
void viaResetPageFlippingLocked(struct via_context *vmesa);
void viaWaitIdle(struct via_context *vmesa, GLboolean light);
void viaWaitIdleLocked(struct via_context *vmesa, GLboolean light);

GLboolean viaCheckBreadcrumb( struct via_context *vmesa, GLuint value );
void viaEmitBreadcrumb( struct via_context *vmesa );


#define VIA_FINISH_PRIM(vmesa) do {		\
   if (vmesa->dmaLastPrim)			\
      viaFinishPrimitive( vmesa );		\
} while (0)

#define VIA_FLUSH_DMA(vmesa) do {		\
   VIA_FINISH_PRIM(vmesa);			\
   if (vmesa->dmaLow) 		\
      viaFlushDma(vmesa);			\
} while (0)
    

void viaWrapPrimitive( struct via_context *vmesa );

static __inline__ GLuint *viaAllocDma(struct via_context *vmesa, int bytes)
{
   if (vmesa->dmaLow + bytes > VIA_DMA_HIGHWATER) {
      viaFlushDma(vmesa);
   }

   {
      GLuint *start = (GLuint *)(vmesa->dma + vmesa->dmaLow);
      vmesa->dmaLow += bytes;
      return start;
   }
}


static GLuint __inline__ *viaExtendPrimitive(struct via_context *vmesa, int bytes)
{
   if (vmesa->dmaLow + bytes > VIA_DMA_HIGHWATER) {
      viaWrapPrimitive(vmesa);
   }

   {
      GLuint *start = (GLuint *)(vmesa->dma + vmesa->dmaLow);
      vmesa->dmaLow += bytes;
      return start;
   }
}




#define RING_VARS GLuint *_vb = 0, _nr, _x;

#define BEGIN_RING(n) do {				\
   if (_vb != 0) abort();				\
   _vb = viaAllocDma(vmesa, (n) * sizeof(GLuint));	\
   _nr = (n);						\
   _x = 0;						\
} while (0)

#define BEGIN_RING_NOCHECK(n) do {			\
   if (_vb != 0) abort();				\
   _vb = (GLuint *)(vmesa->dma + vmesa->dmaLow);	\
   vmesa->dmaLow += (n) * sizeof(GLuint);		\
   _nr = (n);						\
   _x = 0;						\
} while (0)

#define OUT_RING(n) _vb[_x++] = (n)

#define ADVANCE_RING() do {			\
   if (_x != _nr) abort(); 			\
   _vb = 0;						\
} while (0)

#define ADVANCE_RING_VARIABLE() do {			\
   if (_x > _nr) abort();				\
   vmesa->dmaLow -= (_nr - _x) * sizeof(GLuint);	\
   _vb = 0;						\
} while (0)


#define QWORD_PAD_RING() do {			\
   if (vmesa->dmaLow & 0x4) {			\
      BEGIN_RING(1);				\
      OUT_RING(HC_DUMMY);			\
      ADVANCE_RING();				\
   }						\
} while (0)

#define VIA_GEQ_WRAP(left, right) \
    (((left) - (right)) < ( 1 << 23))
      
#endif