1 files changed, 280 insertions, 0 deletions
diff --git a/src/ffb_dga.c b/src/ffb_dga.c
new file mode 100644
index 0000000..3ba43df
--- /dev/null
+++ b/src/ffb_dga.c
@@ -0,0 +1,280 @@
+/*
+ * Acceleration for the Creator and Creator3D framebuffer - DGA support.
+ *
+ * Copyright (C) 2000 David S. Miller (davem@redhat.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * DAVID MILLER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/sunffb/ffb_dga.c,v 1.2 2000/10/17 16:53:17 tsi Exp $ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "dgaproc.h"
+
+#include "ffb.h"
+#include "ffb_regs.h"
+#include "ffb_rcache.h"
+#include "ffb_fifo.h"
+#include "ffb_stip.h"
+#include "ffb_loops.h"
+
+static Bool FFB_OpenFramebuffer(ScrnInfoPtr pScrn, char **name, unsigned char **mem,
+				int *size, int *offset, int *extra);
+static void FFB_CloseFramebuffer(ScrnInfoPtr pScrn);
+static Bool FFB_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode);
+static void FFB_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags);
+static int FFB_GetViewport(ScrnInfoPtr pScrn);
+static void FFB_Flush(ScrnInfoPtr pScrn);
+
+/* Have to disable all this stuff for now until I figure out where
+ * we should get the WID values from... ho hum... -DaveM
+ */
+#if 0
+static void FFB_FillRect(ScrnInfoPtr pScrn, int x, int y, int w, int h, unsigned long color);
+
+#ifdef USE_VIS
+static void FFB_BlitRect(ScrnInfoPtr pScrn, int srcx, int srcy, int w, int h,
+			 int dstx, int dsty);
+#else
+#define FFB_BlitRect NULL
+#endif
+#else
+#define FFB_FillRect NULL
+#define FFB_BlitRect NULL
+#endif
+
+static DGAFunctionRec FFB_DGAFuncs = {
+	FFB_OpenFramebuffer,
+	FFB_CloseFramebuffer,
+	FFB_SetMode,
+	FFB_SetViewport,
+	FFB_GetViewport,
+	FFB_Flush,
+	FFB_FillRect,
+	FFB_BlitRect,
+	NULL
+};
+
+void FFB_InitDGA(ScreenPtr pScreen)
+{
+	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+	FFBPtr pFfb;
+	DGAModePtr mode;
+	Bool result;
+
+	pFfb = GET_FFB_FROM_SCRN(pScrn);
+
+	mode = xnfcalloc(sizeof(DGAModeRec), 1);
+	if (!mode) {
+		xf86Msg(X_WARNING, "%s: DGA init failed, cannot alloc DGAMode.\n",
+			pFfb->psdp->device);
+		return;
+	}
+
+	mode->num = 0;
+	mode->mode = pScrn->modes;
+
+	/* Hmmm, what does concurrent access really mean? -DaveM */
+	mode->flags = (DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE | DGA_FILL_RECT);
+
+#ifdef USE_VIS
+	mode->flags |= DGA_BLIT_RECT;
+#endif
+
+	mode->imageWidth = 2048;
+	mode->imageHeight = 2048;
+	mode->pixmapWidth = 2048;
+	mode->pixmapHeight = 2048;
+
+	/* XXX I would imagine that this value states how many bytes
+	 * XXX you add to advance exactly one full horizontal line in
+	 * XXX the framebuffer addressing, but the way we set the pScrn
+	 * XXX mode values do not match that definition.
+	 * XXX
+	 * XXX Ask Jakub what is going on here. -DaveM
+	 */
+#if 1
+	mode->bytesPerScanline = pScrn->modes->HDisplay * 4;
+#else
+	mode->bytesPerScanline = (2048 * 4);
+#endif
+
+	mode->byteOrder = pScrn->imageByteOrder;
+	mode->depth = 32;
+	mode->bitsPerPixel = 32;
+	mode->red_mask = 0xff;
+	mode->green_mask = 0xff00;
+	mode->blue_mask = 0xff0000;
+	mode->visualClass = TrueColor;
+	mode->viewportWidth = pScrn->modes->HDisplay;
+	mode->viewportHeight = pScrn->modes->VDisplay;
+
+	/* Do these values even matter if we do not support
+	 * viewports? -DaveM
+	 */
+	mode->xViewportStep = 0;
+	mode->yViewportStep = 0;
+	mode->maxViewportX = 0;
+	mode->maxViewportY = 0;
+
+	mode->viewportFlags = 0;
+	mode->offset = 0;
+
+	result = DGAInit(pScreen, &FFB_DGAFuncs, mode, 1);
+	if (result == FALSE) {
+		xf86Msg(X_WARNING,
+			"%s: DGA init failed, DGAInit returns FALSE.\n",
+			pFfb->psdp->device);
+	} else {
+		xf86Msg(X_INFO, "%s: DGA support initialized.\n",
+			pFfb->psdp->device);
+	}
+}
+
+static Bool FFB_OpenFramebuffer(ScrnInfoPtr pScrn, char **name, unsigned char **mem,
+				int *size, int *offset, int *extra)
+{
+	FFBPtr pFfb = GET_FFB_FROM_SCRN(pScrn);
+
+	*name = pFfb->psdp->device;
+
+	/* We give the user the dumb frame buffer. */
+	*mem = (unsigned char *)FFB_DFB24_VOFF;
+	*size = 0x1000000;
+	*offset = 0;
+	*extra = 0;
+
+	return TRUE;
+}
+
+static void FFB_CloseFramebuffer(ScrnInfoPtr pScrn)
+{
+}
+
+static Bool FFB_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode)
+{
+	/* Nothing to do, we currently only support one mode
+	 * and we are always in it.
+	 */
+	return TRUE;
+}
+
+static void FFB_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
+{
+	/* We don't support viewports, so... */
+}
+
+static int FFB_GetViewport(ScrnInfoPtr pScrn)
+{
+	/* No viewports, none pending... */
+	return 0;
+}
+
+static void FFB_Flush(ScrnInfoPtr pScrn)
+{
+	FFBPtr pFfb = GET_FFB_FROM_SCRN(pScrn);
+	ffb_fbcPtr ffb = pFfb->regs;
+
+	FFBWait(pFfb, ffb);
+}
+
+#if 0
+
+extern void CreatorFillBoxSolid (DrawablePtr pDrawable, int nBox,
+				 BoxPtr pBox, unsigned long pixel);
+
+static void FFB_FillRect(ScrnInfoPtr pScrn, int x, int y, int w, int h, unsigned long color)
+{
+	DrawableRec draw;
+	BoxRec box;
+
+	draw.pScreen = pScrn->pScreen;
+	box.x1 = x;
+	box.y1 = y;
+	box.x2 = x + w;
+	box.y2 = y + h;
+
+	CreatorFillBoxSolid(&draw, 1, &box, color);
+}
+
+#ifdef USE_VIS
+extern void VISmoveImageLR(unsigned char *, unsigned char *, long, long, long, long);
+extern void VISmoveImageRL(unsigned char *, unsigned char *, long, long, long, long);
+
+static void FFB_BlitRect(ScrnInfoPtr pScrn, int srcx, int srcy,
+			 int w, int h, int dstx, int dsty)
+{
+	FFBPtr pFfb = GET_FFB_FROM_SCRN(pScrn);
+	ffb_fbcPtr ffb = pFfb->regs;
+
+	if (!pFfb->disable_vscroll &&
+	    dstx == srcx &&
+	    dsty != dsty) {
+		FFB_WRITE_ATTRIBUTES_VSCROLL(pFfb, 0x00ffffff);
+		FFBFifo(pFfb, 7);
+		ffb->drawop = FFB_DRAWOP_VSCROLL;
+		FFB_WRITE64(&ffb->by, srcy, srcx);
+		FFB_WRITE64_2(&ffb->dy, dsty, dstx);
+		FFB_WRITE64_3(&ffb->bh, h, w);
+		pFfb->rp_active = 1;
+	} else {
+		unsigned char *base = (unsigned char *)pFfb->fb;
+		int use_prefetch = pFfb->use_blkread_prefetch;
+
+		FFB_WRITE_ATTRIBUTES_SFB_VAR(pFfb, 0x00ffffff, GXcopy);
+		FFBWait(pFfb, ffb);
+		if (use_prefetch) {
+			FFBFifo(pFfb, 1);
+			ffb->mer = FFB_MER_EIRA;
+			pFfb->rp_active = 1;
+			FFBWait(pFfb, ffb);
+		}
+		if (srcx < dstx) {
+			VISmoveImageRL((base +
+					((srcy + h - 1) * (2048 * 4)) +
+					(srcx * (32 / 8))),
+				       (base +
+					((dsty + h - 1) * (2048 * 4)) +
+					(dstx * (32 / 8))),
+				       (w * (32 / 8)),
+				       h,
+				       -(2048 * 4), - (2048 * 4));
+		} else {
+			VISmoveImageLR((base +
+					((srcy + h - 1) * (2048 * 4)) +
+					(srcx * (32 / 8))),
+				       (base +
+					((dsty + h - 1) * (2048 * 4)) +
+					(dstx * (32 / 8))),
+				       (w * (32 / 8)),
+				       h,
+				       -(2048 * 4), - (2048 * 4));
+		}
+		if (use_prefetch) {
+			FFBFifo(pFfb, 1);
+			ffb->mer = FFB_MER_DRA;
+			pFfb->rp_active = 1;
+			FFBWait(pFfb, pFfb->regs);
+		}
+	}
+}
+#endif
+
+#endif