Initial revisionXORG-STABLE

1 files changed, 226 insertions, 0 deletions

diff --git a/src/smi_shadow.c b/src/smi_shadow.c
new file mode 100644
index 0000000..5ef9ba5
--- /dev/null
+++ b/src/smi_shadow.c
@@ -0,0 +1,226 @@
+/* Header:   //Mercury/Projects/archives/XFree86/4.0/smi_shadow.c-arc   1.10   30 Nov 2000 11:40:38   Frido  $ */
+
+/*
+Copyright (C) 1994-2000 The XFree86 Project, Inc.  All Rights Reserved.
+Copyright (C) 2000 Silicon Motion, Inc.  All Rights Reserved.
+
+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, FIT-
+NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+XFREE86 PROJECT 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.
+
+Except as contained in this notice, the names of the XFree86 Project and
+Silicon Motion shall not be used in advertising or otherwise to promote the
+sale, use or other dealings in this Software without prior written
+authorization from the XFree86 Project and Silicon Motion.
+*/
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/siliconmotion/smi_shadow.c,v 1.2 2000/12/05 21:18:37 dawes Exp $ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86Resources.h"
+#include "xf86_ansic.h"
+#include "xf86PciInfo.h"
+#include "xf86Pci.h"
+#include "shadowfb.h"
+#include "servermd.h"
+
+#include "smi.h"
+
+/******************************************************************************\
+|* SMI_RefreshArea
+|*=============================================================================
+|*
+|*  PARAMETERS:		pScrn	Pointer to ScrnInfo structure.
+|*					num		Number of boxes to refresh.
+|*					pbox	Pointer to an array of boxes to refresh.
+|*
+|*  DESCRIPTION:	Refresh a portion of the shadow buffer to the visual screen
+|*					buffer.  This is mainly used for rotation purposes.
+|*												y
+|*  RETURNS:		Nothing.
+|*
+\******************************************************************************/
+void SMI_RefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
+{
+	SMIPtr pSmi = SMIPTR(pScrn);
+	int width, height, srcX, srcY, destX, destY;
+
+	ENTER_PROC("SMI_RefreshArea");
+
+	/* #671 */
+	if (pSmi->polyLines)
+	{
+		pSmi->polyLines = FALSE;
+		return;
+	}
+
+	if (pSmi->rotate)
+	{
+		/* IF we need to do rotation, setup the hardware here. */
+		WaitIdleEmpty();
+		WRITE_DPR(pSmi, 0x10, pSmi->ShadowPitch);
+		WRITE_DPR(pSmi, 0x3C, pSmi->ShadowPitch);
+		WRITE_DPR(pSmi, 0x44, pSmi->FBOffset >> 3);
+	}
+
+	/* #672 */
+	if (pSmi->ClipTurnedOn)
+	{
+		WaitQueue(1);
+		WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft);
+		pSmi->ClipTurnedOn = FALSE;
+	}
+
+	while (num--)
+	{
+		/* Get coordinates of the box to refresh. */
+		srcX   = pbox->x1;
+		srcY   = pbox->y1;
+		width  = pbox->x2 - srcX;
+		height = pbox->y2 - srcY;
+
+		DEBUG((VERBLEV, "x=%d y=%d w=%d h=%d\n", srcX, srcY, width, height));
+
+		if ((width > 0) && (height > 0))
+		{
+			switch (pSmi->rotate)
+			{
+				case SMI_ROTATE_CW:
+					/* 90 degrees CW rotation.  Calculate destination
+					   coordinates:
+
+						*---+
+						|   |       +-----*
+						|   |       |     |  destX = shadowHeight - srcY - 1
+						|   |  -->  |     |  destY = srcX
+						|   |       |     |
+						|   |       +-----+
+						+---+
+					*/
+					destX = pSmi->ShadowHeight - srcY - 1;
+					destY = srcX;
+
+					WaitQueue(4);
+					WRITE_DPR(pSmi, 0x00, (srcX << 16)   + srcY);
+					WRITE_DPR(pSmi, 0x04, (destX << 16)  + destY);
+					WRITE_DPR(pSmi, 0x08, (width << 16)  + height);
+					WRITE_DPR(pSmi, 0x0C, 0xCC | SMI_ROTATE_BLT |
+							SMI_ROTATE_CW | SMI_START_ENGINE);
+					break;
+
+				case SMI_ROTATE_CCW:
+					/* 90 degrees CCW rotatation.  Calculate destination
+					   coordinates:
+
+						*---+
+						|   |       +-----+
+						|   |       |     |  destX = srcY
+						|   |  -->  |     |  destY = shadowWidth - srcX - 1
+						|   |       |     |
+						|   |       *-----+
+						+---+
+					*/
+					destX = srcY;
+					destY = pSmi->ShadowWidth - srcX - 1;
+
+					WaitQueue(4);
+					WRITE_DPR(pSmi, 0x00, (srcX << 16)   + srcY);
+					WRITE_DPR(pSmi, 0x04, (destX << 16)  + destY);
+					WRITE_DPR(pSmi, 0x08, (width << 16)  + height);
+					WRITE_DPR(pSmi, 0x0C, 0xCC | SMI_ROTATE_BLT |
+							SMI_ROTATE_CCW | SMI_START_ENGINE);
+					break;
+
+				default:
+					/* No rotation, perform a normal copy. */
+					if (pScrn->bitsPerPixel == 24)
+					{
+						srcX  *= 3;
+						width *= 3;
+
+						if (pSmi->Chipset == SMI_LYNX)
+						{
+							srcY *= 3;
+						}
+					}
+
+					WaitQueue(4);
+					WRITE_DPR(pSmi, 0x00, (srcX << 16)  + srcY);
+					WRITE_DPR(pSmi, 0x04, (srcX << 16)  + srcY);
+					WRITE_DPR(pSmi, 0x08, (width << 16) + height);
+					WRITE_DPR(pSmi, 0x0C, SMI_BITBLT + SMI_START_ENGINE + 0xCC);
+					break;
+			}
+		}
+
+		pbox++;
+	}
+
+	if (pSmi->rotate)
+	{
+		/* If we did a rotation, we need to restore the hardware state here. */
+		WaitIdleEmpty();
+		WRITE_DPR(pSmi, 0x10, (pSmi->Stride << 16) | pSmi->Stride);
+		WRITE_DPR(pSmi, 0x3C, (pSmi->Stride << 16) | pSmi->Stride);
+		WRITE_DPR(pSmi, 0x44, 0);
+	}
+
+	LEAVE_PROC("SMI_RefreshArea");
+}
+
+/******************************************************************************\
+|* SMI_PointerMoved
+|*=============================================================================
+|*
+|*  PARAMETERS:		index	Index of current screen.
+|*					x		X location of pointer.
+|*					y		Y location of pointer.
+|*
+|*  DESCRIPTION:	Adjust the pointer location if we are in rotation mode.
+|*
+|*  RETURNS:		Nothing.
+|*
+\******************************************************************************/
+void SMI_PointerMoved(int index, int x, int y)
+{
+    ScrnInfoPtr pScrn = xf86Screens[index];
+    SMIPtr pSmi = SMIPTR(pScrn);
+    int newX, newY;
+
+	switch (pSmi->rotate)
+	{
+		case SMI_ROTATE_CW:
+			/* 90 degrees CW rotation. */
+			newX = pScrn->pScreen->height - y - 1;
+			newY = x;
+			break;
+
+		case SMI_ROTATE_CCW:
+			/* 90 degrees CCW rotation. */
+			newX = y;
+			newY = pScrn->pScreen->width - x - 1;
+			break;
+
+		default:
+			/* No rotation. */
+			newX = x;
+			newY = y;
+			break;
+    }
+
+	/* Pass adjusted pointer coordinates original PointerMoved function. */
+    (*pSmi->PointerMoved)(index, newX, newY);
+}