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/*
* Copyright 2000 by Alan Hourihane, Sychdyn, North Wales, UK.
*
* 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.
*
* ALAN HOURIHANE 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: Alan Hourihane, <alanh@fairlite.demon.co.uk>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86Pci.h"
#include "i810.h"
#include "i810_reg.h"
#include "dgaproc.h"
#include "vgaHW.h"
static Bool I810_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static Bool I810_SetMode(ScrnInfoPtr, DGAModePtr);
static int I810_GetViewport(ScrnInfoPtr);
static void I810_SetViewport(ScrnInfoPtr, int, int, int);
#ifdef HAVE_XAA_H
static void I810_Sync(ScrnInfoPtr);
static void I810_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
static void I810_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
#endif
#if 0
static void I810_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
unsigned long);
#endif
static
DGAFunctionRec I810DGAFuncs = {
I810_OpenFramebuffer,
NULL,
I810_SetMode,
I810_SetViewport,
I810_GetViewport,
#ifdef HAVE_XAA_H
I810_Sync,
I810_FillRect,
I810_BlitRect,
#else
NULL,
NULL,
NULL,
#endif
#if 0
I810_BlitTransRect
#else
NULL
#endif
};
Bool
I810DGAInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
I810Ptr pI810 = I810PTR(pScrn);
DGAModePtr modes = NULL, newmodes = NULL, currentMode;
DisplayModePtr pMode, firstMode;
int Bpp = pScrn->bitsPerPixel >> 3;
int num = 0;
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++;
currentMode->mode = pMode;
currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
if (!pI810->noAccel)
currentMode->flags |= DGA_FILL_RECT | DGA_BLIT_RECT;
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 = (Bpp == 3) ? 2 : 1;
currentMode->yViewportStep = 1;
currentMode->viewportFlags = DGA_FLIP_RETRACE;
currentMode->offset = 0;
currentMode->address = pI810->FbBase;
currentMode->bytesPerScanline = ((pScrn->displayWidth * Bpp) + 3) & ~3L;
currentMode->imageWidth = pI810->FbMemBox.x2;
currentMode->imageHeight = pI810->FbMemBox.y2;
currentMode->pixmapWidth = currentMode->imageWidth;
currentMode->pixmapHeight = currentMode->imageHeight;
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;
}
pI810->numDGAModes = num;
pI810->DGAModes = modes;
return DGAInit(pScreen, &I810DGAFuncs, modes, num);
}
static DisplayModePtr I810SavedDGAModes[MAXSCREENS];
static Bool
I810_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode)
{
int index = pScrn->pScreen->myNum;
I810Ptr pI810 = I810PTR(pScrn);
if (!pMode) { /* restore the original mode */
if (pI810->DGAactive) {
pScrn->currentMode = I810SavedDGAModes[index];
pScrn->SwitchMode(SWITCH_MODE_ARGS(pScrn, pScrn->currentMode));
pScrn->AdjustFrame(ADJUST_FRAME_ARGS(pScrn, 0, 0));
pI810->DGAactive = FALSE;
}
} else {
if (!pI810->DGAactive) {
I810SavedDGAModes[index] = pScrn->currentMode;
pI810->DGAactive = TRUE;
}
pScrn->SwitchMode(SWITCH_MODE_ARGS(pScrn, pMode->mode));
}
return TRUE;
}
static int
I810_GetViewport(ScrnInfoPtr pScrn)
{
I810Ptr pI810 = I810PTR(pScrn);
return pI810->DGAViewportStatus;
}
static void
I810_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
{
I810Ptr pI810 = I810PTR(pScrn);
vgaHWPtr hwp = VGAHWPTR(pScrn);
pScrn->AdjustFrame(ADJUST_FRAME_ARGS(pScrn, x, y));
/* wait for retrace */
while ((hwp->readST01(hwp) & 0x08)) ;
while (!(hwp->readST01(hwp) & 0x08)) ;
pI810->DGAViewportStatus = 0;
}
#ifdef HAVE_XAA_H
static void
I810_FillRect(ScrnInfoPtr pScrn,
int x, int y, int w, int h, unsigned long color)
{
I810Ptr pI810 = I810PTR(pScrn);
if (pI810->AccelInfoRec) {
(*pI810->AccelInfoRec->SetupForSolidFill) (pScrn, color, GXcopy, ~0);
(*pI810->AccelInfoRec->SubsequentSolidFillRect) (pScrn, x, y, w, h);
SET_SYNC_FLAG(pI810->AccelInfoRec);
}
}
static void
I810_Sync(ScrnInfoPtr pScrn)
{
I810Ptr pI810 = I810PTR(pScrn);
if (pI810->AccelInfoRec) {
(*pI810->AccelInfoRec->Sync) (pScrn);
}
}
static void
I810_BlitRect(ScrnInfoPtr pScrn,
int srcx, int srcy, int w, int h, int dstx, int dsty)
{
I810Ptr pI810 = I810PTR(pScrn);
if (pI810->AccelInfoRec) {
int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
int ydir = (srcy < dsty) ? -1 : 1;
(*pI810->AccelInfoRec->SetupForScreenToScreenCopy) (pScrn, xdir, ydir,
GXcopy, ~0, -1);
(*pI810->AccelInfoRec->SubsequentScreenToScreenCopy) (pScrn, srcx, srcy,
dstx, dsty, w, h);
SET_SYNC_FLAG(pI810->AccelInfoRec);
}
}
#endif
#if 0
static void
I810_BlitTransRect(ScrnInfoPtr pScrn,
int srcx, int srcy,
int w, int h, int dstx, int dsty, unsigned long color)
{
/* this one should be separate since the XAA function would
* prohibit usage of ~0 as the key */
}
#endif
static Bool
I810_OpenFramebuffer(ScrnInfoPtr pScrn,
char **name,
unsigned char **mem, int *size, int *offset, int *flags)
{
I810Ptr pI810 = I810PTR(pScrn);
*name = NULL; /* no special device */
*mem = (unsigned char *)pI810->LinearAddr;
*size = pI810->FbMapSize;
*offset = 0;
*flags = DGA_NEED_ROOT;
return TRUE;
}
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