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/*
* Copyright 2000 by Egbert Eich
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Alan Hourihane not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Alan Hourihane makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* EGBERT EICH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
* Authors: Adapted from: Alan Hourihane, <alanh@fairlite.demon.co.uk>
* by: Egbert Eich
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86Pci.h"
#include "vgaHW.h"
#include "cir.h"
#include "dgaproc.h"
static Bool Cir_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static Bool Cir_SetMode(ScrnInfoPtr, DGAModePtr);
static int Cir_GetViewport(ScrnInfoPtr);
static void Cir_SetViewport(ScrnInfoPtr, int, int, int);
static
DGAFunctionRec CirDGAFuncs = {
Cir_OpenFramebuffer,
NULL, /* Cir_CloseFramebuffer */
Cir_SetMode,
Cir_SetViewport,
Cir_GetViewport,
NULL, NULL, NULL,
NULL /* Cir_BlitTransRect */
};
_X_EXPORT Bool
CirDGAInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
CirPtr pCir = CIRPTR(pScrn);
DGAModePtr modes = NULL, newmodes = NULL, currentMode;
DisplayModePtr pMode, firstMode;
int Bpp = pScrn->bitsPerPixel >> 3;
int num = 0;
int imlines = (pScrn->videoRam * 1024) /
(pScrn->displayWidth * (pScrn->bitsPerPixel >> 3));
if (!pCir->DGAnumModes) {
pMode = firstMode = pScrn->modes;
while (pMode) {
newmodes = realloc(modes, (num + 1) * sizeof (DGAModeRec));
if (!newmodes) {
free(modes);
return FALSE;
}
modes = newmodes;
currentMode = modes + num;
num++;
(void)memset(currentMode, 1, sizeof(DGAModeRec));
currentMode->mode = pMode;
currentMode->flags = DGA_PIXMAP_AVAILABLE
| ((!pCir->NoAccel) ? (DGA_FILL_RECT | DGA_BLIT_RECT) : 0);
if (pMode->Flags & V_DBLSCAN)
currentMode->flags |= DGA_DOUBLESCAN;
if(pMode->Flags & V_INTERLACE)
currentMode->flags |= DGA_INTERLACED;
currentMode->byteOrder = pScrn->imageByteOrder;
currentMode->depth = pScrn->depth;
currentMode->bitsPerPixel = pScrn->bitsPerPixel;
currentMode->red_mask = pScrn->mask.red;
currentMode->green_mask = pScrn->mask.green;
currentMode->blue_mask = pScrn->mask.blue;
currentMode->visualClass = (Bpp == 1) ? PseudoColor : TrueColor;
currentMode->viewportWidth = pMode->HDisplay;
currentMode->viewportHeight = pMode->VDisplay;
currentMode->xViewportStep = 1; /* The granularity of x and y pos. */
currentMode->yViewportStep = 1;
currentMode->viewportFlags = 0 /*DGA_FLIP_RETRACE*/;
currentMode->offset = 0;
currentMode->address = pCir->FbBase;
currentMode->bytesPerScanline = ((pScrn->displayWidth * Bpp) + 3) & ~3L;
currentMode->pixmapWidth = currentMode->imageWidth
= pScrn->displayWidth;
currentMode->pixmapHeight = currentMode->imageHeight = imlines;
currentMode->maxViewportX = currentMode->imageWidth -
currentMode->viewportWidth;
/* this might need to get clamped to some maximum */
currentMode->maxViewportY = currentMode->imageHeight -
currentMode->viewportHeight;
pMode = pMode->next;
if(pMode == firstMode)
break;
}
pCir->DGAnumModes = num;
pCir->DGAModes = modes;
}
return DGAInit(pScreen, &CirDGAFuncs, pCir->DGAModes, pCir->DGAnumModes);
}
static Bool
Cir_OpenFramebuffer(
ScrnInfoPtr pScrn,
char **name,
unsigned char **mem,
int *size,
int *offset,
int *flags
){
CirPtr pCir = CIRPTR(pScrn);
*name = NULL; /* no special device */
*mem = (unsigned char*)(long)pCir->FbAddress;
*size = pCir->FbMapSize;
*offset = 0; /* Always */
*flags = 0; /* Root permissions OS-dependent */
return TRUE;
}
static Bool
Cir_SetMode(
ScrnInfoPtr pScrn,
DGAModePtr pMode
){
CirPtr pCir = CIRPTR(pScrn);
static int OldDisplayWidth[MAXSCREENS];
int index = pScrn->pScreen->myNum;
Bool ret = FALSE;
if(!pMode) { /* restore the original mode */
/* put the ScreenParameters back */
pScrn->displayWidth = OldDisplayWidth[index];
ret = pCir->DGAModeInit(xf86Screens[index], pScrn->currentMode);
pCir->DGAactive = FALSE;
} else {
if(!pCir->DGAactive) { /* save the old parameters */
OldDisplayWidth[index] = pScrn->displayWidth;
pCir->DGAactive = TRUE;
}
pScrn->displayWidth = pMode->bytesPerScanline /
(pMode->bitsPerPixel >> 3);
ret = pCir->DGAModeInit(xf86Screens[index], pMode->mode);
}
return ret;
}
static void
Cir_SetViewport(
ScrnInfoPtr pScrn,
int x, int y,
int flags
){
CirPtr pCir = CIRPTR(pScrn);
vgaHWPtr hwp = VGAHWPTR(pScrn);
pScrn->AdjustFrame(ADJUST_FRAME_ARGS(pScrn, x, y));
while((hwp->readST01(hwp) & 0x08));
while(!(hwp->readST01(hwp) & 0x08));
pCir->DGAViewportStatus = 0; /* AdjustFrame loops until finished */
}
static int
Cir_GetViewport(
ScrnInfoPtr pScrn
){
CirPtr pCir = CIRPTR(pScrn);
return pCir->DGAViewportStatus;
}
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