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-rw-r--r--src/i830_dga.c293
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diff --git a/src/i830_dga.c b/src/i830_dga.c
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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>
+ */
+/*
+ * Reformatted with GNU indent (2.2.8), using the following options:
+ *
+ * -bad -bap -c41 -cd0 -ncdb -ci6 -cli0 -cp0 -ncs -d0 -di3 -i3 -ip3 -l78
+ * -lp -npcs -psl -sob -ss -br -ce -sc -hnl
+ *
+ * This provides a good match with the original i810 code and preferred
+ * XFree86 formatting conventions.
+ *
+ * When editing this driver, please follow the existing formatting, and edit
+ * with <TAB> characters expanded at 8-column intervals.
+ */
+
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i830_dga.c,v 1.3 2003/02/26 04:11:23 dawes Exp $ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "xf86Pci.h"
+#include "xf86PciInfo.h"
+#include "xaa.h"
+#include "xaalocal.h"
+#include "i830.h"
+#include "i810_reg.h"
+#include "dgaproc.h"
+#include "vgaHW.h"
+
+static Bool I830_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
+ int *, int *, int *);
+static Bool I830_SetMode(ScrnInfoPtr, DGAModePtr);
+static void I830_Sync(ScrnInfoPtr);
+static int I830_GetViewport(ScrnInfoPtr);
+static void I830_SetViewport(ScrnInfoPtr, int, int, int);
+static void I830_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
+static void I830_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
+
+#if 0
+static void I830_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
+ unsigned long);
+#endif
+
+static
+DGAFunctionRec I830DGAFuncs = {
+ I830_OpenFramebuffer,
+ NULL,
+ I830_SetMode,
+ I830_SetViewport,
+ I830_GetViewport,
+ I830_Sync,
+ I830_FillRect,
+ I830_BlitRect,
+#if 0
+ I830_BlitTransRect
+#else
+ NULL
+#endif
+};
+
+Bool
+I830DGAInit(ScreenPtr pScreen)
+{
+ ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+ I830Ptr pI830 = I830PTR(pScrn);
+ DGAModePtr modes = NULL, newmodes = NULL, currentMode;
+ DisplayModePtr pMode, firstMode;
+ int Bpp = pScrn->bitsPerPixel >> 3;
+ int num = 0;
+
+ MARKER();
+
+ pMode = firstMode = pScrn->modes;
+
+ while (pMode) {
+
+ newmodes = xrealloc(modes, (num + 1) * sizeof(DGAModeRec));
+
+ if (!newmodes) {
+ xfree(modes);
+ return FALSE;
+ }
+ modes = newmodes;
+
+ currentMode = modes + num;
+ num++;
+
+ currentMode->mode = pMode;
+ currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
+ if (!pI830->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 = pI830->FbBase + pScrn->fbOffset;
+
+ currentMode->bytesPerScanline = ((pScrn->displayWidth * Bpp) + 3) & ~3L;
+ currentMode->imageWidth = pI830->FbMemBox.x2;
+ currentMode->imageHeight = pI830->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;
+ }
+
+ pI830->numDGAModes = num;
+ pI830->DGAModes = modes;
+
+ return DGAInit(pScreen, &I830DGAFuncs, modes, num);
+}
+
+static DisplayModePtr I830SavedDGAModes[MAXSCREENS];
+
+static Bool
+I830_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode)
+{
+ int index = pScrn->pScreen->myNum;
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ MARKER();
+
+ if (!pMode) { /* restore the original mode */
+ DPRINTF(PFX, "Restoring original mode (from DGA mode)\n");
+ if (pI830->DGAactive) {
+ pScrn->currentMode = I830SavedDGAModes[index];
+ pScrn->SwitchMode(index, pScrn->currentMode, 0);
+ pScrn->AdjustFrame(index, 0, 0, 0);
+ pI830->DGAactive = FALSE;
+ }
+ } else {
+ if (!pI830->DGAactive) {
+ DPRINTF(PFX, "Setting DGA mode\n");
+ I830SavedDGAModes[index] = pScrn->currentMode;
+ pI830->DGAactive = TRUE;
+ }
+
+ pScrn->SwitchMode(index, pMode->mode, 0);
+ }
+
+ return TRUE;
+}
+
+static int
+I830_GetViewport(ScrnInfoPtr pScrn)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ MARKER();
+
+ return pI830->DGAViewportStatus;
+}
+
+static void
+I830_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+ vgaHWPtr hwp = VGAHWPTR(pScrn);
+
+ MARKER();
+
+ pScrn->AdjustFrame(pScrn->pScreen->myNum, x, y, flags);
+
+ /* wait for retrace */
+ while ((hwp->readST01(hwp) & 0x08)) ;
+ while (!(hwp->readST01(hwp) & 0x08)) ;
+
+ pI830->DGAViewportStatus = 0;
+}
+
+static void
+I830_FillRect(ScrnInfoPtr pScrn,
+ int x, int y, int w, int h, unsigned long color)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ MARKER();
+
+ if (pI830->AccelInfoRec) {
+ (*pI830->AccelInfoRec->SetupForSolidFill) (pScrn, color, GXcopy, ~0);
+ (*pI830->AccelInfoRec->SubsequentSolidFillRect) (pScrn, x, y, w, h);
+ SET_SYNC_FLAG(pI830->AccelInfoRec);
+ }
+}
+
+static void
+I830_Sync(ScrnInfoPtr pScrn)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ MARKER();
+
+ if (pI830->AccelInfoRec) {
+ (*pI830->AccelInfoRec->Sync) (pScrn);
+ }
+}
+
+static void
+I830_BlitRect(ScrnInfoPtr pScrn,
+ int srcx, int srcy, int w, int h, int dstx, int dsty)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ MARKER();
+
+ if (pI830->AccelInfoRec) {
+ int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
+ int ydir = (srcy < dsty) ? -1 : 1;
+
+ (*pI830->AccelInfoRec->SetupForScreenToScreenCopy) (pScrn, xdir, ydir,
+ GXcopy, ~0, -1);
+ (*pI830->AccelInfoRec->SubsequentScreenToScreenCopy) (pScrn, srcx, srcy,
+ dstx, dsty, w, h);
+ SET_SYNC_FLAG(pI830->AccelInfoRec);
+ }
+}
+
+#if 0
+static void
+I830_BlitTransRect(ScrnInfoPtr pScrn,
+ int srcx, int srcy,
+ int w, int h, int dstx, int dsty, unsigned long color)
+{
+
+ MARKER();
+
+ /* this one should be separate since the XAA function would
+ * prohibit usage of ~0 as the key */
+}
+#endif
+
+static Bool
+I830_OpenFramebuffer(ScrnInfoPtr pScrn,
+ char **name,
+ unsigned char **mem, int *size, int *offset, int *flags)
+{
+ I830Ptr pI830 = I830PTR(pScrn);
+
+ MARKER();
+
+ *name = NULL; /* no special device */
+ *mem = (unsigned char *)(pI830->LinearAddr + pScrn->fbOffset);
+ *size = pI830->FrontBuffer.Size;
+ *offset = 0;
+ *flags = DGA_NEED_ROOT;
+
+ DPRINTF(PFX,
+ " mem == 0x%.8x (pI830->LinearAddr)\n"
+ "size == %lu (pI830->FbMapSize)\n", *mem, *size);
+
+ return TRUE;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 18:05:43 +0000