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-rw-r--r--src/atidga.c479
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diff --git a/src/atidga.c b/src/atidga.c
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-/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atidga.c,v 1.10 2003/04/23 21:51:27 tsi Exp $ */
-/*
- * Copyright 2000 through 2003 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
- *
- * 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 Marc Aurele La France not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. Marc Aurele La France makes no representations
- * about the suitability of this software for any purpose. It is provided
- * "as-is" without express or implied warranty.
- *
- * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
- * EVENT SHALL MARC AURELE LA FRANCE 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.
- */
-
-#ifndef AVOID_DGA
-
-#include "ati.h"
-#include "atiadjust.h"
-#include "atichip.h"
-#include "atidac.h"
-#include "atidga.h"
-#include "atiident.h"
-#include "atimode.h"
-#include "atistruct.h"
-
-#include "dgaproc.h"
-
-/*
- * ATIDGAOpenFramebuffer --
- *
- * This function returns various framebuffer attributes to a DGA client.
- */
-static Bool
-ATIDGAOpenFramebuffer
-(
- ScrnInfoPtr pScreenInfo,
- char **DeviceName,
- unsigned char **ApertureBase,
- int *ApertureSize,
- int *ApertureOffset,
- int *flags
-)
-{
- ATIPtr pATI = ATIPTR(pScreenInfo);
-
- *DeviceName = NULL; /* No special device */
- *ApertureBase = (unsigned char *)(pATI->LinearBase);
- *ApertureSize = pScreenInfo->videoRam * 1024;
- *ApertureOffset = 0; /* Always */
- *flags = 0; /* Root premissions OS-dependent */
-
- return TRUE;
-}
-
-static int
-BitsSet
-(
- unsigned long data
-)
-{
- unsigned long mask = 1;
- int set = 0;
-
- for (; mask; mask <<= 1)
- if (data & mask)
- set++;
-
- return set;
-}
-
-/*
- * ATIDGASetMode --
- *
- * This function sets a graphics mode for a DGA client.
- */
-static Bool
-ATIDGASetMode
-(
- ScrnInfoPtr pScreenInfo,
- DGAModePtr pDGAMode
-)
-{
- ATIPtr pATI = ATIPTR(pScreenInfo);
- DisplayModePtr pMode;
- int iScreen = pScreenInfo->scrnIndex;
- int frameX0, frameY0;
-
- if (pDGAMode)
- {
- pMode = pDGAMode->mode;
- pATI->depth = pDGAMode->depth;
- pATI->bitsPerPixel = pDGAMode->bitsPerPixel;
- pATI->displayWidth =
- pDGAMode->bytesPerScanline * 8 / pATI->bitsPerPixel;
- pATI->weight.red = BitsSet(pDGAMode->red_mask);
- pATI->weight.green = BitsSet(pDGAMode->green_mask);
- pATI->weight.blue = BitsSet(pDGAMode->blue_mask);
- frameX0 = frameY0 = 0;
- if (!pATI->currentMode)
- pATI->currentMode = pScreenInfo->currentMode;
- }
- else
- {
- if (!(pMode = pATI->currentMode))
- return TRUE;
-
- pATI->depth = pScreenInfo->depth;
- pATI->bitsPerPixel = pScreenInfo->bitsPerPixel;
- pATI->displayWidth = pScreenInfo->displayWidth;
- pATI->weight = pScreenInfo->weight;
- frameX0 = pScreenInfo->frameX0;
- frameY0 = pScreenInfo->frameY0;
- }
-
- pATI->XModifier = pATI->bitsPerPixel / UnitOf(pATI->bitsPerPixel);
- ATIAdjustPreInit(pATI);
- ATIModePreInit(pScreenInfo, pATI, &pATI->NewHW);
-
- if (!(*pScreenInfo->SwitchMode)(iScreen, pMode, 0))
- return FALSE;
- if (!pDGAMode)
- pATI->currentMode = NULL;
- (*pScreenInfo->AdjustFrame)(iScreen, frameX0, frameY0, 0);
-
- return TRUE;
-}
-
-/*
- * ATIDGASetViewport --
- *
- * This function sets the display start address for a DGA client.
- */
-static void
-ATIDGASetViewport
-(
- ScrnInfoPtr pScreenInfo,
- int x,
- int y,
- int flags
-)
-{
- (*pScreenInfo->AdjustFrame)(pScreenInfo->pScreen->myNum, x, y, flags);
-}
-
-/*
- * ATIDGAGetViewport --
- *
- * This function returns the current status of prior DGA requests to set the
- * adapter's display start address.
- */
-static int
-ATIDGAGetViewport
-(
- ScrnInfoPtr pScreenInfo
-)
-{
- return 0; /* There are never any pending requests */
-}
-
-/*
- * ATIDGAFillRect --
- *
- * This function calls XAA solid fill primitives to fill a rectangle.
- */
-static void
-ATIDGAFillRect
-(
- ScrnInfoPtr pScreenInfo,
- int x,
- int y,
- int w,
- int h,
- unsigned long colour
-)
-{
- ATIPtr pATI = ATIPTR(pScreenInfo);
- XAAInfoRecPtr pXAAInfo = pATI->pXAAInfo;
-
- (*pXAAInfo->SetupForSolidFill)(pScreenInfo, (int)colour, GXcopy,
- (CARD32)(~0));
- (*pXAAInfo->SubsequentSolidFillRect)(pScreenInfo, x, y, w, h);
-
- if (pScreenInfo->bitsPerPixel == pATI->bitsPerPixel)
- SET_SYNC_FLAG(pXAAInfo);
-}
-
-/*
- * ATIDGABlitRect --
- *
- * This function calls XAA screen-to-screen copy primitives to copy a
- * rectangle.
- */
-static void
-ATIDGABlitRect
-(
- ScrnInfoPtr pScreenInfo,
- int xSrc,
- int ySrc,
- int w,
- int h,
- int xDst,
- int yDst
-)
-{
- ATIPtr pATI = ATIPTR(pScreenInfo);
- XAAInfoRecPtr pXAAInfo = pATI->pXAAInfo;
- int xdir = ((xSrc < xDst) && (ySrc == yDst)) ? -1 : 1;
- int ydir = (ySrc < yDst) ? -1 : 1;
-
- (*pXAAInfo->SetupForScreenToScreenCopy)(pScreenInfo,
- xdir, ydir, GXcopy, (CARD32)(~0), -1);
- (*pXAAInfo->SubsequentScreenToScreenCopy)(pScreenInfo,
- xSrc, ySrc, xDst, yDst, w, h);
-
- if (pScreenInfo->bitsPerPixel == pATI->bitsPerPixel)
- SET_SYNC_FLAG(pXAAInfo);
-}
-
-/*
- * ATIDGABlitTransRect --
- *
- * This function calls XAA screen-to-screen copy primitives to transparently
- * copy a rectangle.
- */
-static void
-ATIDGABlitTransRect
-(
- ScrnInfoPtr pScreenInfo,
- int xSrc,
- int ySrc,
- int w,
- int h,
- int xDst,
- int yDst,
- unsigned long colour
-)
-{
- ATIPtr pATI = ATIPTR(pScreenInfo);
- XAAInfoRecPtr pXAAInfo = pATI->pXAAInfo;
- int xdir = ((xSrc < xDst) && (ySrc == yDst)) ? -1 : 1;
- int ydir = (ySrc < yDst) ? -1 : 1;
-
- pATI->XAAForceTransBlit = TRUE;
-
- (*pXAAInfo->SetupForScreenToScreenCopy)(pScreenInfo,
- xdir, ydir, GXcopy, (CARD32)(~0), (int)colour);
-
- pATI->XAAForceTransBlit = FALSE;
-
- (*pXAAInfo->SubsequentScreenToScreenCopy)(pScreenInfo,
- xSrc, ySrc, xDst, yDst, w, h);
-
- if (pScreenInfo->bitsPerPixel == pATI->bitsPerPixel)
- SET_SYNC_FLAG(pXAAInfo);
-}
-
-/*
- * ATIDGAAddModes --
- *
- * This function translates DisplayModeRec's into DGAModeRec's.
- */
-static void
-ATIDGAAddModes
-(
- ScrnInfoPtr pScreenInfo,
- ATIPtr pATI,
- int flags,
- int depth,
- int bitsPerPixel,
- int redMask,
- int greenMask,
- int blueMask,
- int visualClass
-)
-{
- DisplayModePtr pMode = pScreenInfo->modes;
- DGAModePtr pDGAMode;
- int displayWidth = pScreenInfo->displayWidth;
- int videoBits = pScreenInfo->videoRam * 1024 * 8;
- int xViewportStep = 64 / UnitOf(bitsPerPixel);
- int modePitch, bitsPerScanline, maxViewportY;
-
- if (bitsPerPixel != pScreenInfo->bitsPerPixel)
- displayWidth = 0;
-
- while (1)
- {
- /* Weed out multiscanned modes */
- if ((pMode->VScan <= 1) ||
- ((pMode->VScan == 2) && !(pMode->Flags & V_DBLSCAN)))
- {
- /*
- * For code simplicity, ensure DGA mode pitch is a multiple of 64
- * bytes.
- */
- if (!(modePitch = displayWidth))
- {
- modePitch = ((64 * 8) / UnitOf(bitsPerPixel)) - 1;
- modePitch = (pMode->HDisplay + modePitch) & ~modePitch;
- }
-
- /* Ensure the mode fits in video memory */
- if ((modePitch * bitsPerPixel * pMode->VDisplay) <= videoBits)
- {
- /* Stop generating modes on out-of-memory conditions */
- pDGAMode = xrealloc(pATI->pDGAMode,
- (pATI->nDGAMode + 1) * SizeOf(DGAModeRec));
- if (!pDGAMode)
- break;
-
- pATI->pDGAMode = pDGAMode;
- pDGAMode += pATI->nDGAMode;
- pATI->nDGAMode++;
- (void)memset(pDGAMode, 0, SizeOf(DGAModeRec));
-
- /* Fill in the mode structure */
- pDGAMode->mode = pMode;
- pDGAMode->flags = flags;
- if (bitsPerPixel == pScreenInfo->bitsPerPixel)
- {
- pDGAMode->flags |= DGA_PIXMAP_AVAILABLE;
- pDGAMode->address = pATI->pMemory;
-
- if (pATI->pXAAInfo)
- pDGAMode->flags &= ~DGA_CONCURRENT_ACCESS;
- }
- if ((pMode->Flags & V_DBLSCAN) || (pMode->VScan > 1))
- pDGAMode->flags |= DGA_DOUBLESCAN;
- if (pMode->Flags & V_INTERLACE)
- pDGAMode->flags |= DGA_INTERLACED;
-
- pDGAMode->byteOrder = pScreenInfo->imageByteOrder;
- pDGAMode->depth = depth;
- pDGAMode->bitsPerPixel = bitsPerPixel;
- pDGAMode->red_mask = redMask;
- pDGAMode->green_mask = greenMask;
- pDGAMode->blue_mask = blueMask;
- pDGAMode->visualClass = visualClass;
-
- pDGAMode->viewportWidth = pMode->HDisplay;
- pDGAMode->viewportHeight = pMode->VDisplay;
- pDGAMode->xViewportStep = xViewportStep;
- pDGAMode->yViewportStep = 1;
-
- bitsPerScanline = modePitch * bitsPerPixel;
- pDGAMode->bytesPerScanline = bitsPerScanline / 8;
- pDGAMode->imageWidth = pDGAMode->pixmapWidth = modePitch;
- pDGAMode->imageHeight = pDGAMode->pixmapHeight =
- videoBits / bitsPerScanline;
-
- pDGAMode->maxViewportX =
- pDGAMode->imageWidth - pDGAMode->viewportWidth;
- pDGAMode->maxViewportY =
- pDGAMode->imageHeight - pDGAMode->viewportHeight;
- maxViewportY =
- ((((pATI->AdjustMaxBase * 8) / bitsPerPixel) +
- xViewportStep) / modePitch) - 1;
- if (maxViewportY < pDGAMode->maxViewportY)
- pDGAMode->maxViewportY = maxViewportY;
- }
- }
-
- if ((pMode = pMode->next) == pScreenInfo->modes)
- {
- if (!displayWidth)
- break;
-
- displayWidth = 0;
- }
- }
-}
-
-/*
- * ATIDGAInit --
- *
- * This function initialises the driver's support for the DGA extension.
- */
-Bool
-ATIDGAInit
-(
- ScreenPtr pScreen,
- ScrnInfoPtr pScreenInfo,
- ATIPtr pATI
-)
-{
- XAAInfoRecPtr pXAAInfo;
- int flags;
-
- if (!pATI->nDGAMode)
- {
-
-#ifndef AVOID_CPIO
-
- /*
- * Contrary to previous extension versions, DGA 2 does not support
- * banked framebuffers. Also, disable DGA when non-DGA server modes
- * are planar.
- */
- if (pATI->BankInfo.BankSize || (pScreenInfo->depth <= 4))
- return FALSE;
-
-#endif /* AVOID_CPIO */
-
- /* Set up DGA callbacks */
- pATI->ATIDGAFunctions.OpenFramebuffer = ATIDGAOpenFramebuffer;
- pATI->ATIDGAFunctions.SetMode = ATIDGASetMode;
- pATI->ATIDGAFunctions.SetViewport = ATIDGASetViewport;
- pATI->ATIDGAFunctions.GetViewport = ATIDGAGetViewport;
-
- flags = 0;
- if ((pXAAInfo = pATI->pXAAInfo))
- {
- pATI->ATIDGAFunctions.Sync = pXAAInfo->Sync;
- if (pXAAInfo->SetupForSolidFill &&
- pXAAInfo->SubsequentSolidFillRect)
- {
- flags |= DGA_FILL_RECT;
- pATI->ATIDGAFunctions.FillRect = ATIDGAFillRect;
- }
- if (pXAAInfo->SetupForScreenToScreenCopy &&
- pXAAInfo->SubsequentScreenToScreenCopy)
- {
- flags |= DGA_BLIT_RECT | DGA_BLIT_RECT_TRANS;
- pATI->ATIDGAFunctions.BlitRect = ATIDGABlitRect;
- pATI->ATIDGAFunctions.BlitTransRect = ATIDGABlitTransRect;
- }
- }
- if (!flags)
- flags = DGA_CONCURRENT_ACCESS;
-
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 8, 8, 0, 0, 0, PseudoColor);
-
- if ((pATI->Chip >= ATI_CHIP_264CT) &&
- (pATI->Chipset == ATI_CHIPSET_ATI))
- {
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 15, 16, 0x7C00U, 0x03E0U, 0x001FU, TrueColor);
-
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 16, 16, 0xF800U, 0x07E0U, 0x001FU, TrueColor);
-
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 24, 24, 0x00FF0000U, 0x0000FF00U, 0x000000FFU, TrueColor);
-
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 24, 32, 0x00FF0000U, 0x0000FF00U, 0x000000FFU, TrueColor);
-
- if (pATI->DAC != ATI_DAC_INTERNAL) /* Not first revision */
- {
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 15, 16, 0x7C00U, 0x03E0U, 0x001FU, DirectColor);
-
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 16, 16, 0xF800U, 0x07E0U, 0x001FU, DirectColor);
-
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 24, 24, 0x00FF0000U, 0x0000FF00U, 0x000000FFU, DirectColor);
-
- ATIDGAAddModes(pScreenInfo, pATI, flags,
- 24, 32, 0x00FF0000U, 0x0000FF00U, 0x000000FFU, DirectColor);
- }
- }
- }
-
- return DGAInit(pScreen, &pATI->ATIDGAFunctions, pATI->pDGAMode,
- pATI->nDGAMode);
-}
-
-#endif /* AVOID_DGA */
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