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-rw-r--r--src/nv_dga.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/src/nv_dga.c b/src/nv_dga.c
new file mode 100644
index 0000000..714467a
--- /dev/null
+++ b/src/nv_dga.c
@@ -0,0 +1,312 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/nv_dga.c,v 1.11 2002/01/25 21:56:06 tsi Exp $ */
+
+#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->FbUsableSize)) {
+
+ 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->FbUsableSize / 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 */
+ if(pNv->riva.Architecture != 3)
+ 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->riva.PCIO, 0x3da) & 0x08);
+ while(!(VGA_RD08(pNv->riva.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... yet */
+}
+
+
+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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