1/* Header:   //Mercury/Projects/archives/XFree86/4.0/smi_accel.c-arc   1.16   03 Jan 2001 13:29:06   Frido  $ */
2
3/*
4Copyright (C) 1994-1999 The XFree86 Project, Inc.  All Rights Reserved.
5Copyright (C) 2000 Silicon Motion, Inc.  All Rights Reserved.
6
7Permission is hereby granted, free of charge, to any person obtaining a copy of
8this software and associated documentation files (the "Software"), to deal in
9the Software without restriction, including without limitation the rights to
10use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
11of the Software, and to permit persons to whom the Software is furnished to do
12so, subject to the following conditions:
13
14The above copyright notice and this permission notice shall be included in all
15copies or substantial portions of the Software.
16
17THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FIT-
19NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
20XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23
24Except as contained in this notice, the names of the XFree86 Project and
25Silicon Motion shall not be used in advertising or otherwise to promote the
26sale, use or other dealings in this Software without prior written
27authorization from the XFree86 Project and silicon Motion.
28*/
29
30#ifdef HAVE_CONFIG_H
31#include "config.h"
32#endif
33
34#include "smi.h"
35#include "smi_501.h"
36
37void
38SMI_GEReset(ScrnInfoPtr pScrn, int from_timeout, int line, const char *file)
39{
40    SMIPtr	pSmi = SMIPTR(pScrn);
41    int32_t	tmp;
42
43    ENTER();
44
45    if (from_timeout) {
46	if (pSmi->GEResetCnt++ < 10 || xf86GetVerbosity() > 1)
47	    xf86DrvMsg(pScrn->scrnIndex,X_INFO,
48		       "\tSMI_GEReset called from %s line %d\n", file, line);
49    }
50    else
51	WaitIdle();
52
53    if (IS_MSOC(pSmi)) {
54	/*	12:13	Drawing Engine Abort
55	 *		00:	Normal
56	 *		11:	Abort 2D Engine
57	 *	(0x3000 == bits 12 and 13 set)
58	 */
59	tmp = READ_SCR(pSmi, 0x0000) & ~0x00003000;
60	WRITE_SCR(pSmi, 0x0000, tmp | 0x00003000);
61	/* FIXME No need to wait here? */
62	WRITE_SCR(pSmi, 0x0000, tmp);
63    }
64    else {
65	tmp = VGAIN8_INDEX(pSmi, VGA_SEQ_INDEX, VGA_SEQ_DATA, 0x15);
66	VGAOUT8_INDEX(pSmi, VGA_SEQ_INDEX, VGA_SEQ_DATA, 0x15, tmp | 0x30);
67    }
68
69    if (!IS_MSOC(pSmi))
70	VGAOUT8_INDEX(pSmi, VGA_SEQ_INDEX, VGA_SEQ_DATA, 0x15, tmp);
71    SMI_EngineReset(pScrn);
72
73    LEAVE();
74}
75
76/* The sync function for the GE */
77void
78SMI_AccelSync(ScrnInfoPtr pScrn)
79{
80    SMIPtr pSmi = SMIPTR(pScrn);
81
82    ENTER();
83
84    WaitIdle();
85
86    LEAVE();
87}
88
89void
90SMI_EngineReset(ScrnInfoPtr pScrn)
91{
92    SMIPtr pSmi = SMIPTR(pScrn);
93    CARD32 DEDataFormat = 0;
94    int i, stride;
95    int xyAddress[] = { 320, 400, 512, 640, 800, 1024, 1280, 1600, 2048 };
96
97    ENTER();
98
99    DEDataFormat = SMI_DEDataFormat(pScrn->bitsPerPixel);
100    for (i = 0; i < sizeof(xyAddress) / sizeof(xyAddress[0]); i++) {
101	if (xyAddress[i] == pScrn->virtualX) {
102	    DEDataFormat |= i << 16;
103	    break;
104	}
105    }
106    DEDataFormat |= 0x40000000; /* Force pattern origin coordinates to (0,0) */
107
108    WaitIdle();
109    stride = pScrn->displayWidth;
110    if (pSmi->Bpp == 3)
111	stride *= 3;
112    WRITE_DPR(pSmi, 0x10, (stride << 16) | stride);
113    WRITE_DPR(pSmi, 0x1C, DEDataFormat);
114    WRITE_DPR(pSmi, 0x24, 0xFFFFFFFF);
115    WRITE_DPR(pSmi, 0x28, 0xFFFFFFFF);
116    WRITE_DPR(pSmi, 0x3C, (stride << 16) | stride);
117    WRITE_DPR(pSmi, 0x40, pSmi->FBOffset >> 3);
118    WRITE_DPR(pSmi, 0x44, pSmi->FBOffset >> 3);
119
120    SMI_DisableClipping(pScrn);
121
122    LEAVE();
123}
124
125/******************************************************************************/
126/*  Clipping								      */
127/******************************************************************************/
128
129void
130SMI_SetClippingRectangle(ScrnInfoPtr pScrn, int left, int top, int right,
131			 int bottom)
132{
133    SMIPtr pSmi = SMIPTR(pScrn);
134
135    ENTER();
136    DEBUG("left=%d top=%d right=%d bottom=%d\n", left, top, right, bottom);
137
138    if (pScrn->bitsPerPixel == 24) {
139	left  *= 3;
140	right *= 3;
141
142	if (pSmi->Chipset == SMI_LYNX) {
143	    top    *= 3;
144	    bottom *= 3;
145	}
146    }
147
148    if (IS_MSOC(pSmi)) {
149	++right;
150	++bottom;
151    }
152
153    pSmi->ScissorsLeft = (top << 16) | (left & 0xFFFF) | 0x2000;
154    pSmi->ScissorsRight = (bottom << 16) | (right & 0xFFFF);
155
156    pSmi->ClipTurnedOn = FALSE;
157
158    WaitQueue();
159    WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
160    WRITE_DPR(pSmi, 0x30, pSmi->ScissorsRight);
161
162    LEAVE();
163}
164
165void
166SMI_DisableClipping(ScrnInfoPtr pScrn)
167{
168    SMIPtr pSmi = SMIPTR(pScrn);
169
170    ENTER();
171
172    pSmi->ScissorsLeft = 0;
173    if (pScrn->bitsPerPixel == 24) {
174	if (pSmi->Chipset == SMI_LYNX) {
175	    pSmi->ScissorsRight = ((pScrn->virtualY * 3) << 16) | (pScrn->virtualX * 3);
176	} else {
177	    pSmi->ScissorsRight = (pScrn->virtualY << 16) | (pScrn->virtualX * 3);
178	}
179    } else {
180	pSmi->ScissorsRight = (pScrn->virtualY << 16) | pScrn->virtualX;
181    }
182
183    pSmi->ClipTurnedOn = FALSE;
184
185    WaitQueue();
186    WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
187    WRITE_DPR(pSmi, 0x30, pSmi->ScissorsRight);
188
189    LEAVE();
190}
191
192CARD32
193SMI_DEDataFormat(int bpp) {
194    CARD32 DEDataFormat = 0;
195
196    switch (bpp) {
197    case 8:
198	DEDataFormat = 0x00000000;
199	break;
200    case 16:
201	DEDataFormat = 0x00100000;
202	break;
203    case 24:
204	DEDataFormat = 0x00300000;
205	break;
206    case 32:
207	DEDataFormat = 0x00200000;
208	break;
209    }
210    return DEDataFormat;
211}
212
213