ct_dga.c revision 3699b6c4 
1
2#ifdef HAVE_CONFIG_H
3#include "config.h"
4#endif
5
6#include "xf86.h"
7#include "xf86_OSproc.h"
8#include "xf86Pci.h"
9#include "xf86PciInfo.h"
10#include "xaa.h"
11#include "xaalocal.h"
12#include "ct_driver.h"
13#include "dgaproc.h"
14
15
16static Bool CHIPS_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
17					int *, int *, int *);
18static Bool CHIPS_SetMode(ScrnInfoPtr, DGAModePtr);
19static int  CHIPS_GetViewport(ScrnInfoPtr);
20static void CHIPS_SetViewport(ScrnInfoPtr, int, int, int);
21static void CHIPS_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
22static void CHIPS_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
23#if 0
24static void CHIPS_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
25					unsigned long);
26#endif
27
28static
29DGAFunctionRec CHIPS_DGAFuncs = {
30   CHIPS_OpenFramebuffer,
31   NULL,
32   CHIPS_SetMode,
33   CHIPS_SetViewport,
34   CHIPS_GetViewport,
35   CHIPSSync,
36   CHIPS_FillRect,
37   CHIPS_BlitRect,
38#if 0
39   CHIPS_BlitTransRect
40#else
41   NULL
42#endif
43};
44
45static
46DGAFunctionRec CHIPS_MMIODGAFuncs = {
47   CHIPS_OpenFramebuffer,
48   NULL,
49   CHIPS_SetMode,
50   CHIPS_SetViewport,
51   CHIPS_GetViewport,
52   CHIPSMMIOSync,
53   CHIPS_FillRect,
54   CHIPS_BlitRect,
55#if 0
56   CHIPS_BlitTransRect
57#else
58   NULL
59#endif
60};
61
62static
63DGAFunctionRec CHIPS_HiQVDGAFuncs = {
64   CHIPS_OpenFramebuffer,
65   NULL,
66   CHIPS_SetMode,
67   CHIPS_SetViewport,
68   CHIPS_GetViewport,
69   CHIPSHiQVSync,
70   CHIPS_FillRect,
71   CHIPS_BlitRect,
72#if 0
73   CHIPS_BlitTransRect
74#else
75   NULL
76#endif
77};
78
79
80Bool
81CHIPSDGAInit(ScreenPtr pScreen)
82{
83   ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
84   CHIPSPtr cPtr = CHIPSPTR(pScrn);
85   DGAModePtr modes = NULL, newmodes = NULL, currentMode;
86   DisplayModePtr pMode, firstMode;
87   int Bpp = pScrn->bitsPerPixel >> 3;
88   int num = 0;
89   Bool oneMore;
90   int imlines =  (pScrn->videoRam * 1024) /
91      (pScrn->displayWidth * (pScrn->bitsPerPixel >> 3));
92
93   pMode = firstMode = pScrn->modes;
94
95   while(pMode) {
96
97	if(0 /*pScrn->displayWidth != pMode->HDisplay*/) {
98	    newmodes = realloc(modes, (num + 2) * sizeof(DGAModeRec));
99	    oneMore = TRUE;
100	} else {
101	    newmodes = realloc(modes, (num + 1) * sizeof(DGAModeRec));
102	    oneMore = FALSE;
103	}
104
105	if(!newmodes) {
106	   free(modes);
107	   return FALSE;
108	}
109	modes = newmodes;
110
111SECOND_PASS:
112
113	currentMode = modes + num;
114	num++;
115
116	currentMode->mode = pMode;
117	currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
118	if(cPtr->Flags & ChipsAccelSupport)
119	   currentMode->flags |= (cPtr->Flags & ChipsAccelSupport)
120	     ? (DGA_FILL_RECT | DGA_BLIT_RECT) : 0;
121	if(pMode->Flags & V_DBLSCAN)
122	   currentMode->flags |= DGA_DOUBLESCAN;
123	if(pMode->Flags & V_INTERLACE)
124	   currentMode->flags |= DGA_INTERLACED;
125	currentMode->byteOrder = pScrn->imageByteOrder;
126	currentMode->depth = pScrn->depth;
127	currentMode->bitsPerPixel = pScrn->bitsPerPixel;
128	currentMode->red_mask = pScrn->mask.red;
129	currentMode->green_mask = pScrn->mask.green;
130	currentMode->blue_mask = pScrn->mask.blue;
131	currentMode->visualClass = (Bpp == 1) ? PseudoColor : TrueColor;
132	currentMode->viewportWidth = pMode->HDisplay;
133	currentMode->viewportHeight = pMode->VDisplay;
134	currentMode->xViewportStep = 1;
135	currentMode->yViewportStep = 1;
136 	currentMode->viewportFlags = DGA_FLIP_RETRACE | DGA_FLIP_IMMEDIATE;
137	currentMode->offset = 0;
138	currentMode->address = cPtr->FbBase;
139
140	if(oneMore) { /* first one is narrow width */
141	    currentMode->bytesPerScanline = ((pMode->HDisplay * Bpp) + 3) & ~3L;
142	    currentMode->imageWidth = pMode->HDisplay;
143	    currentMode->imageHeight =  imlines;
144	    currentMode->pixmapWidth = currentMode->imageWidth;
145	    currentMode->pixmapHeight = currentMode->imageHeight;
146	    currentMode->maxViewportX = currentMode->imageWidth -
147					currentMode->viewportWidth;
148	    /* this might need to get clamped to some maximum */
149	    currentMode->maxViewportY = currentMode->imageHeight -
150					currentMode->viewportHeight;
151	    oneMore = FALSE;
152	    goto SECOND_PASS;
153	} else {
154	    currentMode->bytesPerScanline =
155			((pScrn->displayWidth * Bpp) + 3) & ~3L;
156	    currentMode->imageWidth = pScrn->displayWidth;
157	    currentMode->imageHeight =  imlines;
158	    currentMode->pixmapWidth = currentMode->imageWidth;
159	    currentMode->pixmapHeight = currentMode->imageHeight;
160	    currentMode->maxViewportX = currentMode->imageWidth -
161					currentMode->viewportWidth;
162	    /* this might need to get clamped to some maximum */
163	    currentMode->maxViewportY = currentMode->imageHeight -
164					currentMode->viewportHeight;
165	}
166
167	pMode = pMode->next;
168	if(pMode == firstMode)
169	   break;
170   }
171
172   cPtr->numDGAModes = num;
173   cPtr->DGAModes = modes;
174
175   if (IS_HiQV(cPtr)) {
176	return DGAInit(pScreen, &CHIPS_HiQVDGAFuncs, modes, num);
177   } else {
178	if(!cPtr->UseMMIO) {
179	    return DGAInit(pScreen, &CHIPS_DGAFuncs, modes, num);
180	} else {
181	    return DGAInit(pScreen, &CHIPS_MMIODGAFuncs, modes, num);
182	}
183   }
184}
185
186
187static Bool
188CHIPS_SetMode(
189   ScrnInfoPtr pScrn,
190   DGAModePtr pMode
191){
192   static int OldDisplayWidth[MAXSCREENS];
193   int index = pScrn->pScreen->myNum;
194
195   CHIPSPtr cPtr = CHIPSPTR(pScrn);
196
197   if (!pMode) { /* restore the original mode */
198	/* put the ScreenParameters back */
199       if (cPtr->DGAactive) {
200           pScrn->displayWidth = OldDisplayWidth[index];
201	   pScrn->EnterVT(pScrn->scrnIndex,0);
202
203	   cPtr->DGAactive = FALSE;
204       }
205   } else {
206	if(!cPtr->DGAactive) {  /* save the old parameters */
207	    OldDisplayWidth[index] = pScrn->displayWidth;
208	    pScrn->LeaveVT(pScrn->scrnIndex,0);
209	    cPtr->DGAactive = TRUE;
210	}
211
212	pScrn->displayWidth = pMode->bytesPerScanline /
213			      (pMode->bitsPerPixel >> 3);
214
215        CHIPSSwitchMode(index, pMode->mode, 0);
216   }
217
218   return TRUE;
219}
220
221
222
223static int
224CHIPS_GetViewport(
225  ScrnInfoPtr pScrn
226){
227    CHIPSPtr cPtr = CHIPSPTR(pScrn);
228
229    return cPtr->DGAViewportStatus;
230}
231
232static void
233CHIPS_SetViewport(
234   ScrnInfoPtr pScrn,
235   int x, int y,
236   int flags
237   ){
238    vgaHWPtr hwp = VGAHWPTR(pScrn);
239    CHIPSPtr cPtr = CHIPSPTR(pScrn);
240
241    if (flags & DGA_FLIP_RETRACE) {
242	while ((hwp->readST01(hwp)) & 0x08){};
243	while (!((hwp->readST01(hwp)) & 0x08)){};
244    }
245
246    CHIPSAdjustFrame(pScrn->pScreen->myNum, x, y, flags);
247    cPtr->DGAViewportStatus = 0;  /* CHIPSAdjustFrame loops until finished */
248}
249
250static void
251CHIPS_FillRect (
252   ScrnInfoPtr pScrn,
253   int x, int y, int w, int h,
254   unsigned long color
255){
256    CHIPSPtr cPtr = CHIPSPTR(pScrn);
257
258    if(cPtr->AccelInfoRec) {
259	(*cPtr->AccelInfoRec->SetupForSolidFill)(pScrn, color, GXcopy, ~0);
260	(*cPtr->AccelInfoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h);
261	SET_SYNC_FLAG(cPtr->AccelInfoRec);
262    }
263}
264
265static void
266CHIPS_BlitRect(
267   ScrnInfoPtr pScrn,
268   int srcx, int srcy,
269   int w, int h,
270   int dstx, int dsty
271){
272    CHIPSPtr cPtr = CHIPSPTR(pScrn);
273
274    if(cPtr->AccelInfoRec) {
275	int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
276	int ydir = (srcy < dsty) ? -1 : 1;
277
278	(*cPtr->AccelInfoRec->SetupForScreenToScreenCopy)(
279		pScrn, xdir, ydir, GXcopy, ~0, -1);
280	(*cPtr->AccelInfoRec->SubsequentScreenToScreenCopy)(
281		pScrn, srcx, srcy, dstx, dsty, w, h);
282	SET_SYNC_FLAG(cPtr->AccelInfoRec);
283    }
284}
285
286#if 0
287static void
288CHIPS_BlitTransRect(
289   ScrnInfoPtr pScrn,
290   int srcx, int srcy,
291   int w, int h,
292   int dstx, int dsty,
293   unsigned long color
294){
295  /* this one should be separate since the XAA function would
296     prohibit usage of ~0 as the key */
297}
298#endif
299
300static Bool
301CHIPS_OpenFramebuffer(
302   ScrnInfoPtr pScrn,
303   char **name,
304   unsigned char **mem,
305   int *size,
306   int *offset,
307   int *flags
308){
309    CHIPSPtr cPtr = CHIPSPTR(pScrn);
310
311    *name = NULL; 		/* no special device */
312    *mem = (unsigned char*)cPtr->FbAddress;
313    *size = cPtr->FbMapSize;
314    *offset = 0;
315    *flags = DGA_NEED_ROOT;
316
317    return TRUE;
318}
319