Initial revisionXORG-STABLE

1 files changed, 281 insertions, 0 deletions

diff --git a/src/i830_cursor.c b/src/i830_cursor.c
new file mode 100644
index 00000000..419fd583
--- /dev/null
+++ b/src/i830_cursor.c
@@ -0,0 +1,281 @@
+
+/**************************************************************************
+
+Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
+Copyright © 2002 David Dawes
+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, sub license, 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 (including the
+next paragraph) 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 NON-INFRINGEMENT.
+IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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/i810/i830_cursor.c,v 1.6 2002/12/18 15:49:01 dawes Exp $ */
+
+/*
+ * 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.
+ */
+
+/*
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ *   David Dawes <dawes@tungstengraphics.com>
+ *
+ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86_ansic.h"
+#include "compiler.h"
+
+#include "xf86fbman.h"
+
+#include "i830.h"
+
+static void I830LoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src);
+static void I830ShowCursor(ScrnInfoPtr pScrn);
+static void I830HideCursor(ScrnInfoPtr pScrn);
+static void I830SetCursorColors(ScrnInfoPtr pScrn, int bg, int fb);
+static void I830SetCursorPosition(ScrnInfoPtr pScrn, int x, int y);
+static Bool I830UseHWCursor(ScreenPtr pScrn, CursorPtr pCurs);
+
+void
+I830InitHWCursor(ScrnInfoPtr pScrn)
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+   CARD32 temp;
+
+   DPRINTF(PFX, "I830InitHWCursor\n");
+
+   /* Initialise the HW cursor registers, leaving the cursor hidden. */
+   if (IS_MOBILE(pI830)) {
+      temp = INREG(CURSOR_A_CONTROL);
+      temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE | MCURSOR_MEM_TYPE_LOCAL |
+		MCURSOR_PIPE_SELECT);
+      temp |= CURSOR_MODE_DISABLE;
+      /*
+       * XXX Should enable cursor B when both pipes are enabled.
+       * For now, give pipe A preference.
+       */
+      if (pI830->pipeEnabled[0])
+	 temp |= MCURSOR_PIPE_A;
+      else if (pI830->pipeEnabled[1])
+	 temp |= MCURSOR_PIPE_B;
+      /* Need to set control, then address. */
+      OUTREG(CURSOR_A_CONTROL, temp);
+      OUTREG(CURSOR_A_BASE, pI830->CursorMem.Physical);
+   } else {
+      temp = INREG(CURSOR_CONTROL);
+      temp &= ~(CURSOR_FORMAT_MASK | CURSOR_GAMMA_ENABLE |
+		CURSOR_ENABLE  | CURSOR_STRIDE_MASK);
+      temp |= (CURSOR_FORMAT_3C);
+      /* This initialises the format and leave the cursor disabled. */
+      OUTREG(CURSOR_CONTROL, temp);
+      /* Need to set address and size after disabling. */
+      OUTREG(CURSOR_BASEADDR, pI830->CursorMem.Start);
+      temp = ((I810_CURSOR_X & CURSOR_SIZE_MASK) << CURSOR_SIZE_HSHIFT) |
+	     ((I810_CURSOR_Y & CURSOR_SIZE_MASK) << CURSOR_SIZE_VSHIFT);
+      OUTREG(CURSOR_SIZE, temp);
+   }
+}
+
+Bool
+I830CursorInit(ScreenPtr pScreen)
+{
+   ScrnInfoPtr pScrn;
+   I830Ptr pI830;
+   xf86CursorInfoPtr infoPtr;
+
+   DPRINTF(PFX, "I830CursorInit\n");
+   pScrn = xf86Screens[pScreen->myNum];
+   pI830 = I830PTR(pScrn);
+   pI830->CursorInfoRec = infoPtr = xf86CreateCursorInfoRec();
+   if (!infoPtr)
+      return FALSE;
+
+   infoPtr->MaxWidth = 64;
+   infoPtr->MaxHeight = 64;
+   infoPtr->Flags = (HARDWARE_CURSOR_TRUECOLOR_AT_8BPP |
+		     HARDWARE_CURSOR_BIT_ORDER_MSBFIRST |
+		     HARDWARE_CURSOR_INVERT_MASK |
+		     HARDWARE_CURSOR_SWAP_SOURCE_AND_MASK |
+		     HARDWARE_CURSOR_AND_SOURCE_WITH_MASK |
+		     HARDWARE_CURSOR_SOURCE_MASK_INTERLEAVE_64 | 0);
+
+   infoPtr->SetCursorColors = I830SetCursorColors;
+   infoPtr->SetCursorPosition = I830SetCursorPosition;
+   infoPtr->LoadCursorImage = I830LoadCursorImage;
+   infoPtr->HideCursor = I830HideCursor;
+   infoPtr->ShowCursor = I830ShowCursor;
+   infoPtr->UseHWCursor = I830UseHWCursor;
+
+   if (pI830->CursorNeedsPhysical && !pI830->CursorMem.Physical)
+      return FALSE;
+
+   I830HideCursor(pScrn);
+
+   return xf86InitCursor(pScreen, infoPtr);
+}
+
+static Bool
+I830UseHWCursor(ScreenPtr pScreen, CursorPtr pCurs)
+{
+   ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+   I830Ptr pI830 = I830PTR(pScrn);
+
+   DPRINTF(PFX, "I830UseHWCursor\n");
+   if (pI830->CursorNeedsPhysical && !pI830->CursorMem.Physical)
+      return FALSE;
+
+   return TRUE;
+}
+
+static void
+I830LoadCursorImage(ScrnInfoPtr pScrn, unsigned char *src)
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+   CARD8 *pcurs = (CARD8 *) (pI830->FbBase + pI830->CursorMem.Start);
+   int x, y;
+
+   DPRINTF(PFX, "I830LoadCursorImage\n");
+   for (y = 0; y < 64; y++) {
+      for (x = 0; x < 64 / 4; x++) {
+	 *pcurs++ = *src++;
+      }
+   }
+}
+
+
+static void
+I830SetCursorPosition(ScrnInfoPtr pScrn, int x, int y)
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+   CARD32 temp = 0;
+   static Bool outsideViewport = FALSE;
+   Bool hide = FALSE, show = FALSE;
+
+   /*
+    * There is a screen display problem when the cursor position is set
+    * wholely outside of the viewport.  We trap that here, turning the
+    * cursor off when that happens, and back on when it comes back into
+    * the viewport.
+    */
+   if (x >= pScrn->currentMode->HDisplay ||
+       y >= pScrn->currentMode->VDisplay ||
+       x <= -I810_CURSOR_X || y <= -I810_CURSOR_Y) {
+      hide = TRUE;
+      outsideViewport = TRUE;
+   } else if (outsideViewport) {
+      show = TRUE;
+      outsideViewport = FALSE;
+   }
+
+   if (x < 0) {
+      temp |= (CURSOR_POS_SIGN << CURSOR_X_SHIFT);
+      x = -x;
+   }
+   if (y < 0) {
+      temp |= (CURSOR_POS_SIGN << CURSOR_Y_SHIFT);
+      y = -y;
+   }
+   temp |= ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT);
+   temp |= ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT);
+
+   OUTREG(CURSOR_A_POSITION, temp);
+
+   if (pI830->cursorOn) {
+      if (hide)
+	 pI830->CursorInfoRec->HideCursor(pScrn);
+      else if (show)
+	 pI830->CursorInfoRec->ShowCursor(pScrn);
+      pI830->cursorOn = TRUE;
+   }
+}
+
+static void
+I830ShowCursor(ScrnInfoPtr pScrn)
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+   CARD32 temp;
+
+   DPRINTF(PFX, "I830ShowCursor\n");
+   DPRINTF(PFX,
+	   "Value of CursorMem.Physical is %x, "
+	   " Value of CursorMem.Start is %x ",
+	   pI830->CursorMem.Physical, pI830->CursorMem.Start);
+
+   pI830->cursorOn = TRUE;
+   if (IS_MOBILE(pI830)) {
+      temp = INREG(CURSOR_A_CONTROL);
+      temp &= ~CURSOR_MODE;
+      temp |= CURSOR_MODE_64_4C_AX;
+      /* Need to set mode, then address. */
+      OUTREG(CURSOR_A_CONTROL, temp);
+      OUTREG(CURSOR_A_BASE, pI830->CursorMem.Physical);
+   } else {
+      temp = INREG(CURSOR_CONTROL);
+      temp |= CURSOR_ENABLE;
+      OUTREG(CURSOR_CONTROL, temp);
+   }
+}
+
+static void
+I830HideCursor(ScrnInfoPtr pScrn)
+{
+   CARD32 temp;
+   I830Ptr pI830 = I830PTR(pScrn);
+
+   DPRINTF(PFX, "I830HideCursor\n");
+
+   pI830->cursorOn = FALSE;
+   if (IS_MOBILE(pI830)) {
+      temp = INREG(CURSOR_A_CONTROL);
+      temp &= ~CURSOR_MODE;
+      temp |= CURSOR_MODE_DISABLE;
+      OUTREG(CURSOR_A_CONTROL, temp);
+      /* This is needed to flush the above change. */
+      OUTREG(CURSOR_A_BASE, pI830->CursorMem.Physical);
+   } else {
+      temp = INREG(CURSOR_CONTROL);
+      temp &= ~CURSOR_ENABLE;
+      OUTREG(CURSOR_CONTROL, temp);
+   }
+}
+
+static void
+I830SetCursorColors(ScrnInfoPtr pScrn, int bg, int fg)
+{
+   I830Ptr pI830 = I830PTR(pScrn);
+
+   DPRINTF(PFX, "I830SetCursorColors\n");
+
+   OUTREG(CURSOR_A_PALETTE0, bg & 0x00ffffff);
+   OUTREG(CURSOR_A_PALETTE1, fg & 0x00ffffff);
+   OUTREG(CURSOR_A_PALETTE2, fg & 0x00ffffff);
+   OUTREG(CURSOR_A_PALETTE3, bg & 0x00ffffff);
+}