/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nsc/nsc_gx2_dga.c,v 1.2 2003/01/14 09:34:32 alanh Exp $ */ /* * $Workfile: nsc_gx2_dga.c $ * $Revision: 1.1.1.1 $ * $Author: jharper $ * * File contents: DGA(Direct Acess Graphics mode) is feature of * XFree86 that allows the program to access directly to video * memory on the graphics card.DGA supports the double * flickering.This file has the functions to support the DGA * modes. * * Project: Geode Xfree Frame buffer device driver. * */ /* * NSC_LIC_ALTERNATIVE_PREAMBLE * * Revision 1.0 * * National Semiconductor Alternative GPL-BSD License * * National Semiconductor Corporation licenses this software * ("Software"): * * National Xfree frame buffer driver * * under one of the two following licenses, depending on how the * Software is received by the Licensee. * * If this Software is received as part of the Linux Framebuffer or * other GPL licensed software, then the GPL license designated * NSC_LIC_GPL applies to this Software; in all other circumstances * then the BSD-style license designated NSC_LIC_BSD shall apply. * * END_NSC_LIC_ALTERNATIVE_PREAMBLE */ /* NSC_LIC_BSD * * National Semiconductor Corporation Open Source License for * * National Xfree frame buffer driver * * (BSD License with Export Notice) * * Copyright (c) 1999-2001 * National Semiconductor Corporation. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * * Neither the name of the National Semiconductor Corporation nor * the names of its contributors may be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * NATIONAL SEMICONDUCTOR CORPORATION OR CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE, * INTELLECTUAL PROPERTY INFRINGEMENT, OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * * EXPORT LAWS: THIS LICENSE ADDS NO RESTRICTIONS TO THE EXPORT LAWS OF * YOUR JURISDICTION. It is licensee's responsibility to comply with * any export regulations applicable in licensee's jurisdiction. Under * CURRENT (2001) U.S. export regulations this software * is eligible for export from the U.S. and can be downloaded by or * otherwise exported or reexported worldwide EXCEPT to U.S. embargoed * destinations which include Cuba, Iraq, Libya, North Korea, Iran, * Syria, Sudan, Afghanistan and any other country to which the U.S. * has embargoed goods and services. * * END_NSC_LIC_BSD */ /* NSC_LIC_GPL * * National Semiconductor Corporation Gnu General Public License for * * National Xfree frame buffer driver * * (GPL License with Export Notice) * * Copyright (c) 1999-2001 * National Semiconductor Corporation. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted under the terms of the GNU General * Public License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version * * In addition to the terms of the GNU General Public License, neither * the name of the National Semiconductor Corporation nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * NATIONAL SEMICONDUCTOR CORPORATION OR CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE, * INTELLECTUAL PROPERTY INFRINGEMENT, OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. See the GNU General Public License for more details. * * EXPORT LAWS: THIS LICENSE ADDS NO RESTRICTIONS TO THE EXPORT LAWS OF * YOUR JURISDICTION. It is licensee's responsibility to comply with * any export regulations applicable in licensee's jurisdiction. Under * CURRENT (2001) U.S. export regulations this software * is eligible for export from the U.S. and can be downloaded by or * otherwise exported or reexported worldwide EXCEPT to U.S. embargoed * destinations which include Cuba, Iraq, Libya, North Korea, Iran, * Syria, Sudan, Afghanistan and any other country to which the U.S. * has embargoed goods and services. * * You should have received a copy of the GNU General Public License * along with this file; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * END_NSC_LIC_GPL */ #include "xf86.h" #include "xf86_OSproc.h" #include "xf86_ansic.h" #include "xf86Pci.h" #include "xf86PciInfo.h" #include "xaa.h" #include "xaalocal.h" #include "nsc.h" #include "dgaproc.h" /* forward declarations */ Bool GX2DGAInit(ScreenPtr pScreen); static Bool GX2_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **, int *, int *, int *); static void GX2_CloseFramebuffer(ScrnInfoPtr pScrn); static Bool GX2_SetMode(ScrnInfoPtr, DGAModePtr); static int GX2_GetViewport(ScrnInfoPtr); static void GX2_SetViewport(ScrnInfoPtr, int, int, int); static void GX2_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long); static void GX2_BlitRect(ScrnInfoPtr, int, int, int, int, int, int); extern void GX2AdjustFrame(int, int, int, int); extern Bool GX2SwitchMode(int, DisplayModePtr, int); extern void GX2AccelSync(ScrnInfoPtr pScreenInfo); static DGAFunctionRec GX2DGAFuncs = { GX2_OpenFramebuffer, GX2_CloseFramebuffer, GX2_SetMode, GX2_SetViewport, GX2_GetViewport, GX2AccelSync, GX2_FillRect, GX2_BlitRect, NULL }; /*---------------------------------------------------------------------------- * GX2DGAInit. * * Description :This function is used to intiallize the DGA modes and sets the viewport based on the screen mode. * Parameters. * pScreeen :Pointer to screen info structure. * * Returns :TRUE on success and FALSE on failure. * * Comments :This function prepares the DGA mode settings for * other func reference. * *---------------------------------------------------------------------------- */ Bool GX2DGAInit(ScreenPtr pScreen) { ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum]; GeodePtr pGeode = GEODEPTR(pScrn); DGAModePtr modes = NULL, newmodes = NULL, currentMode; DisplayModePtr pMode, firstMode; int Bpp = pScrn->bitsPerPixel >> 3; int num = 0; Bool oneMore; pMode = firstMode = pScrn->modes; DEBUGMSG(0, (0, X_NONE, "GX2DGAInit %d\n", Bpp)); while (pMode) { /* redundant but it can be used in future:if(0). */ if (0) { /*pScrn->displayWidth != pMode->HDisplay */ /* memory is allocated for dga to *setup the viewport and mode parameters */ newmodes = xrealloc(modes, (num + 2) * sizeof(DGAModeRec)); oneMore = TRUE; } else { /* one record is allocated here */ newmodes = xrealloc(modes, (num + 1) * sizeof(DGAModeRec)); oneMore = FALSE; } if (!newmodes) { xfree(modes); return FALSE; } modes = newmodes; SECOND_PASS: /* DGA mode flgas and viewport parametrs are set here. */ currentMode = modes + num; num++; currentMode->mode = pMode; currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE; 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 = 1; currentMode->yViewportStep = 1; currentMode->viewportFlags = DGA_FLIP_RETRACE; currentMode->offset = 0; currentMode->address = pGeode->FBBase; if (oneMore) { /* first one is narrow width */ currentMode->bytesPerScanline = ((pMode->HDisplay * Bpp) + 3) & ~3L; currentMode->imageWidth = pMode->HDisplay; currentMode->imageHeight = pMode->VDisplay; 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; oneMore = FALSE; goto SECOND_PASS; } else { currentMode->bytesPerScanline = ((pScrn->displayWidth * Bpp) + 3) & ~3L; currentMode->imageWidth = pScrn->displayWidth; currentMode->imageHeight = pMode->VDisplay; 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; } pGeode->numDGAModes = num; pGeode->DGAModes = modes; return DGAInit(pScreen, &GX2DGAFuncs, modes, num); } /*---------------------------------------------------------------------------- * GX2_SetMode. * * Description :This function is sets into the DGA mode. *. * Parameters. * pScreeen :Pointer to screen info structure. * pMode :Points to the DGAmode ptr data * Returns :TRUE on success and FALSE on failure. * * Comments :none. * * *---------------------------------------------------------------------------- */ static Bool GX2_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode) { static int OldDisplayWidth[MAXSCREENS]; int index = pScrn->pScreen->myNum; GeodePtr pGeode = GEODEPTR(pScrn); DEBUGMSG(0, (0, X_NONE, "GX2_SetMode\n")); if (!pMode) { /* restore the original mode * * put the ScreenParameters back */ pScrn->displayWidth = OldDisplayWidth[index]; DEBUGMSG(0, (0, X_NONE, "GX2_SetMode !pMode %d\n", pScrn->displayWidth)); GX2SwitchMode(index, pScrn->currentMode, 0); pGeode->DGAactive = FALSE; } else { if (!pGeode->DGAactive) { /* save the old parameters */ OldDisplayWidth[index] = pScrn->displayWidth; pGeode->DGAactive = TRUE; DEBUGMSG(0, (0, X_NONE, "GX2_SetMode pMode+ NA %d\n", pScrn->displayWidth)); } pScrn->displayWidth = pMode->bytesPerScanline / (pMode->bitsPerPixel >> 3); DEBUGMSG(0, (0, X_NONE, "GX2_SetMode pMode+ %d\n", pScrn->displayWidth)); GX2SwitchMode(index, pMode->mode, 0); } /* enable/disable Compression */ if (pGeode->Compression) { GFX(set_compression_enable(!pGeode->DGAactive)); } /* enable/disable cursor */ if (pGeode->HWCursor) { GFX(set_cursor_enable(!pGeode->DGAactive)); } return TRUE; } /*---------------------------------------------------------------------------- * GX2_GetViewPort. * * Description :This function is Gets the viewport window memory. *. * Parameters. * pScrn :Pointer to screen info structure. * * Returns :returns the viewport status. * * Comments :none. * * *---------------------------------------------------------------------------- */ static int GX2_GetViewport(ScrnInfoPtr pScrn) { GeodePtr pGeode = GEODEPTR(pScrn); return pGeode->DGAViewportStatus; } /*---------------------------------------------------------------------------- * GX2_SetViewPort. * * Description :This function is Gets the viewport window memory. * * Parameters. * pScrn :Pointer to screen info structure. x :x-cordinate of viewport window * y :y-codinate of the viewport window. * flags :indicates the viewport to be flipped or not. * Returns :returns the viewport status as zero. * * Comments :none. * *---------------------------------------------------------------------------- */ static void GX2_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags) { GeodePtr pGeode = GEODEPTR(pScrn); GX2AdjustFrame(pScrn->pScreen->myNum, x, y, flags); pGeode->DGAViewportStatus = 0; /*GX2AdjustFrame loops until finished */ } /*---------------------------------------------------------------------------- * GX2_FillRect. * * Description :This function is Gets the viewport window memory. *. * Parameters. * pScrn :Pointer to screen info structure. * x :x-cordinate of viewport window * y :y-codinate of the viewport window. * w :width of the rectangle * h :height of the rectangle. * color :color to be filled in rectangle. * * Returns :returns the viewport status as zero. * * Comments :This function is implemented by solidfill routines.. * *---------------------------------------------------------------------------- */ static void GX2_FillRect(ScrnInfoPtr pScrn, int x, int y, int w, int h, unsigned long color) { GeodePtr pGeode = GEODEPTR(pScrn); if (pGeode->AccelInfoRec) { (*pGeode->AccelInfoRec->SetupForSolidFill) (pScrn, color, GXcopy, ~0); (*pGeode->AccelInfoRec->SubsequentSolidFillRect) (pScrn, x, y, w, h); SET_SYNC_FLAG(pGeode->AccelInfoRec); } } /*---------------------------------------------------------------------------- * GX2_BlitRect. * * Description :This function implementing Blit and it moves a * Rectangular block of data from one location to other * Location. * * Parameters. * pScrn :Pointer to screen info structure. * srcx :x-cordinate of the src rectangle * srcy :y-codinate of src rectangle. * w :width of the rectangle * h :height of the rectangle. * dstx :x-cordinate of the dst rectangle. * dsty :y -coordinates of the dst rectangle. * Returns :none. * * Comments :none * *---------------------------------------------------------------------------- */ static void GX2_BlitRect(ScrnInfoPtr pScrn, int srcx, int srcy, int w, int h, int dstx, int dsty) { GeodePtr pGeode = GEODEPTR(pScrn); if (pGeode->AccelInfoRec) { int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1; int ydir = (srcy < dsty) ? -1 : 1; (*pGeode->AccelInfoRec->SetupForScreenToScreenCopy) (pScrn, xdir, ydir, GXcopy, ~0, -1); (*pGeode->AccelInfoRec->SubsequentScreenToScreenCopy) (pScrn, srcx, srcy, dstx, dsty, w, h); SET_SYNC_FLAG(pGeode->AccelInfoRec); } } /*---------------------------------------------------------------------------- * GX2_OpenFramebuffer. * * Description :This function open the framebuffer driver for DGA. * * Parameters. * pScrn :Pointer to screen info structure. * srcx :x-cordinate of the src rectangle * srcy :y-codinate of src rectangle. * w :width of the rectangle * h :height of the rectangle. * dstx :x-cordinate of the dst rectangle. * dsty :y -coordinates of the dst rectangle. * Returns :none. * * Comments :none * *---------------------------------------------------------------------------- */ static Bool GX2_OpenFramebuffer(ScrnInfoPtr pScrn, char **name, unsigned char **mem, int *size, int *offset, int *flags) { GeodePtr pGeode = GEODEPTR(pScrn); *name = NULL; /* no special device */ *mem = (unsigned char *)pGeode->FBLinearAddr; *size = pGeode->FBSize; *offset = 0; *flags = DGA_NEED_ROOT; return TRUE; } static void GX2_CloseFramebuffer(ScrnInfoPtr pScrn) { } /* end of file */