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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/nv_dga.c,v 1.11 2002/01/25 21:56:06 tsi Exp $ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "nv_local.h"
#include "nv_include.h"
#include "nv_type.h"
#include "nv_proto.h"
#include "xaalocal.h"
#include "dgaproc.h"
static Bool NV_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static Bool NV_SetMode(ScrnInfoPtr, DGAModePtr);
static int NV_GetViewport(ScrnInfoPtr);
static void NV_SetViewport(ScrnInfoPtr, int, int, int);
static void NV_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
static void NV_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
static void NV_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
unsigned long);
static
DGAFunctionRec NV_DGAFuncs = {
NV_OpenFramebuffer,
NULL,
NV_SetMode,
NV_SetViewport,
NV_GetViewport,
NVSync,
NV_FillRect,
NV_BlitRect,
NV_BlitTransRect
};
static DGAModePtr
NVSetupDGAMode(
ScrnInfoPtr pScrn,
DGAModePtr modes,
int *num,
int bitsPerPixel,
int depth,
Bool pixmap,
int secondPitch,
unsigned long red,
unsigned long green,
unsigned long blue,
short visualClass
){
DisplayModePtr firstMode, pMode;
NVPtr pNv = NVPTR(pScrn);
DGAModePtr mode, newmodes;
int size, pitch, Bpp = bitsPerPixel >> 3;
SECOND_PASS:
pMode = firstMode = pScrn->modes;
while(1) {
pitch = (pMode->HDisplay + 31) & ~31;
size = pitch * Bpp * pMode->VDisplay;
if((!secondPitch || (pitch != secondPitch)) &&
(size <= pNv->ScratchBufferStart)) {
if(secondPitch)
pitch = secondPitch;
if(!(newmodes = xrealloc(modes, (*num + 1) * sizeof(DGAModeRec))))
break;
modes = newmodes;
mode = modes + *num;
mode->mode = pMode;
mode->flags = DGA_CONCURRENT_ACCESS;
if(pixmap)
mode->flags |= DGA_PIXMAP_AVAILABLE;
if(!pNv->NoAccel)
mode->flags |= DGA_FILL_RECT | DGA_BLIT_RECT;
if(pMode->Flags & V_DBLSCAN)
mode->flags |= DGA_DOUBLESCAN;
if(pMode->Flags & V_INTERLACE)
mode->flags |= DGA_INTERLACED;
mode->byteOrder = pScrn->imageByteOrder;
mode->depth = depth;
mode->bitsPerPixel = bitsPerPixel;
mode->red_mask = red;
mode->green_mask = green;
mode->blue_mask = blue;
mode->visualClass = visualClass;
mode->viewportWidth = pMode->HDisplay;
mode->viewportHeight = pMode->VDisplay;
mode->xViewportStep = 4 / Bpp;
mode->yViewportStep = 1;
mode->viewportFlags = DGA_FLIP_RETRACE;
mode->offset = 0;
mode->address = pNv->FbStart;
mode->bytesPerScanline = pitch * Bpp;
mode->imageWidth = pitch;
mode->imageHeight = pNv->ScratchBufferStart /
mode->bytesPerScanline;
mode->pixmapWidth = mode->imageWidth;
mode->pixmapHeight = mode->imageHeight;
mode->maxViewportX = mode->imageWidth - mode->viewportWidth;
mode->maxViewportY = mode->imageHeight - mode->viewportHeight;
(*num)++;
}
pMode = pMode->next;
if(pMode == firstMode)
break;
}
if(secondPitch) {
secondPitch = 0;
goto SECOND_PASS;
}
return modes;
}
Bool
NVDGAInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
NVPtr pNv = NVPTR(pScrn);
DGAModePtr modes = NULL;
int num = 0;
/* 8 */
modes = NVSetupDGAMode (pScrn, modes, &num, 8, 8,
(pScrn->bitsPerPixel == 8),
(pScrn->bitsPerPixel != 8) ? 0 : pScrn->displayWidth,
0, 0, 0, PseudoColor);
/* 15 */
modes = NVSetupDGAMode (pScrn, modes, &num, 16, 15,
(pScrn->bitsPerPixel == 16),
(pScrn->depth != 15) ? 0 : pScrn->displayWidth,
0x7c00, 0x03e0, 0x001f, TrueColor);
/* 16 */
modes = NVSetupDGAMode (pScrn, modes, &num, 16, 16,
(pScrn->bitsPerPixel == 16),
(pScrn->depth != 16) ? 0 : pScrn->displayWidth,
0xf800, 0x07e0, 0x001f, TrueColor);
/* 32 */
modes = NVSetupDGAMode (pScrn, modes, &num, 32, 24,
(pScrn->bitsPerPixel == 32),
(pScrn->bitsPerPixel != 32) ? 0 : pScrn->displayWidth,
0xff0000, 0x00ff00, 0x0000ff, TrueColor);
pNv->numDGAModes = num;
pNv->DGAModes = modes;
return DGAInit(pScreen, &NV_DGAFuncs, modes, num);
}
static int
BitsSet(unsigned long data)
{
unsigned long mask;
int set = 0;
for(mask = 1; mask; mask <<= 1)
if(mask & data) set++;
return set;
}
static Bool
NV_SetMode(
ScrnInfoPtr pScrn,
DGAModePtr pMode
){
static NVFBLayout SavedLayouts[MAXSCREENS];
int index = pScrn->pScreen->myNum;
NVPtr pNv = NVPTR(pScrn);
if(!pMode) { /* restore the original mode */
if(pNv->DGAactive)
memcpy(&pNv->CurrentLayout, &SavedLayouts[index], sizeof(NVFBLayout));
pScrn->currentMode = pNv->CurrentLayout.mode;
NVSwitchMode(index, pScrn->currentMode, 0);
NVAdjustFrame(index, pScrn->frameX0, pScrn->frameY0, 0);
pNv->DGAactive = FALSE;
} else {
if(!pNv->DGAactive) { /* save the old parameters */
memcpy(&SavedLayouts[index], &pNv->CurrentLayout, sizeof(NVFBLayout));
pNv->DGAactive = TRUE;
}
/* update CurrentLayout */
pNv->CurrentLayout.bitsPerPixel = pMode->bitsPerPixel;
pNv->CurrentLayout.depth = pMode->depth;
pNv->CurrentLayout.displayWidth = pMode->bytesPerScanline /
(pMode->bitsPerPixel >> 3);
pNv->CurrentLayout.weight.red = BitsSet(pMode->red_mask);
pNv->CurrentLayout.weight.green = BitsSet(pMode->green_mask);
pNv->CurrentLayout.weight.blue = BitsSet(pMode->blue_mask);
/* NVModeInit() will set the mode field */
NVSwitchMode(index, pMode->mode, 0);
}
return TRUE;
}
static int
NV_GetViewport(
ScrnInfoPtr pScrn
){
NVPtr pNv = NVPTR(pScrn);
return pNv->DGAViewportStatus;
}
static void
NV_SetViewport(
ScrnInfoPtr pScrn,
int x, int y,
int flags
){
NVPtr pNv = NVPTR(pScrn);
NVAdjustFrame(pScrn->pScreen->myNum, x, y, flags);
while(VGA_RD08(pNv->PCIO, 0x3da) & 0x08);
while(!(VGA_RD08(pNv->PCIO, 0x3da) & 0x08));
pNv->DGAViewportStatus = 0;
}
static void
NV_FillRect (
ScrnInfoPtr pScrn,
int x, int y, int w, int h,
unsigned long color
){
NVPtr pNv = NVPTR(pScrn);
if(!pNv->AccelInfoRec) return;
(*pNv->AccelInfoRec->SetupForSolidFill)(pScrn, color, GXcopy, ~0);
(*pNv->AccelInfoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h);
SET_SYNC_FLAG(pNv->AccelInfoRec);
}
static void
NV_BlitRect(
ScrnInfoPtr pScrn,
int srcx, int srcy,
int w, int h,
int dstx, int dsty
){
NVPtr pNv = NVPTR(pScrn);
int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
int ydir = (srcy < dsty) ? -1 : 1;
if(!pNv->AccelInfoRec) return;
(*pNv->AccelInfoRec->SetupForScreenToScreenCopy)(
pScrn, xdir, ydir, GXcopy, ~0, -1);
(*pNv->AccelInfoRec->SubsequentScreenToScreenCopy)(
pScrn, srcx, srcy, dstx, dsty, w, h);
SET_SYNC_FLAG(pNv->AccelInfoRec);
}
static void
NV_BlitTransRect(
ScrnInfoPtr pScrn,
int srcx, int srcy,
int w, int h,
int dstx, int dsty,
unsigned long color
){
/* not implemented */
}
static Bool
NV_OpenFramebuffer(
ScrnInfoPtr pScrn,
char **name,
unsigned char **mem,
int *size,
int *offset,
int *flags
){
NVPtr pNv = NVPTR(pScrn);
*name = NULL; /* no special device */
*mem = (unsigned char*)pNv->FbAddress;
*size = pNv->FbMapSize;
*offset = 0;
*flags = DGA_NEED_ROOT;
return TRUE;
}
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