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xf86-video-intel/src/i830_dga.c

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/*
* Copyright 2000 by Alan Hourihane, Sychdyn, North Wales, UK.
*
* 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 Alan Hourihane not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Alan Hourihane makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL ALAN HOURIHANE 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.
*
* Authors: Alan Hourihane, <alanh@fairlite.demon.co.uk>
*/
/*
* 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.
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i830_dga.c,v 1.2 2002/11/05 02:01:18 dawes Exp $ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "xf86_OSproc.h"
#include "xf86Pci.h"
#include "xf86PciInfo.h"
#include "xaa.h"
#include "xaalocal.h"
#include "i830.h"
#include "i810_reg.h"
#include "dgaproc.h"
#include "vgaHW.h"
static Bool I830_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static void I830_CloseFramebuffer(ScrnInfoPtr pScrn);
static Bool I830_SetMode(ScrnInfoPtr, DGAModePtr);
static void I830_Sync(ScrnInfoPtr);
static int I830_GetViewport(ScrnInfoPtr);
static void I830_SetViewport(ScrnInfoPtr, int, int, int);
static void I830_FillRect(ScrnInfoPtr, int, int, int, int, unsigned long);
static void I830_BlitRect(ScrnInfoPtr, int, int, int, int, int, int);
#if 0
static void I830_BlitTransRect(ScrnInfoPtr, int, int, int, int, int, int,
unsigned long);
#endif
static
DGAFunctionRec I830DGAFuncs = {
I830_OpenFramebuffer,
I830_CloseFramebuffer,
I830_SetMode,
I830_SetViewport,
I830_GetViewport,
I830_Sync,
I830_FillRect,
I830_BlitRect,
#if 0
I830_BlitTransRect
#else
NULL
#endif
};
Bool
I830DGAInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
I830Ptr pI830 = I830PTR(pScrn);
DGAModePtr modes = NULL, newmodes = NULL, currentMode;
DisplayModePtr pMode, firstMode;
int Bpp = pScrn->bitsPerPixel >> 3;
int num = 0;
MARKER();
pMode = firstMode = pScrn->modes;
while (pMode) {
if(pI830->MergedFB) {
Bool nogood = FALSE;
/* Filter out all meta modes that would require driver-side panning */
switch(((I830ModePrivatePtr)pMode->Private)->merged.SecondPosition) {
case PosRightOf:
case PosLeftOf:
if( (((I830ModePrivatePtr)pMode->Private)->merged.First->VDisplay !=
((I830ModePrivatePtr)pMode->Private)->merged.Second->VDisplay) ||
(((I830ModePrivatePtr)pMode->Private)->merged.First->VDisplay != pMode->VDisplay) )
nogood = TRUE;
break;
default:
if( (((I830ModePrivatePtr)pMode->Private)->merged.First->HDisplay !=
((I830ModePrivatePtr)pMode->Private)->merged.Second->HDisplay) ||
(((I830ModePrivatePtr)pMode->Private)->merged.First->HDisplay != pMode->HDisplay) )
nogood = TRUE;
}
if(nogood) {
xf86DrvMsg(pScrn->scrnIndex, X_INFO,
"DGA: MetaMode %dx%d not suitable for DGA, skipping\n",
pMode->HDisplay, pMode->VDisplay);
goto mode_nogood;
}
}
newmodes = xrealloc(modes, (num + 1) * sizeof(DGAModeRec));
if (!newmodes) {
xfree(modes);
return FALSE;
}
modes = newmodes;
currentMode = modes + num;
num++;
currentMode->mode = pMode;
currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
if (!pI830->noAccel)
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 = (Bpp == 3) ? 2 : 1;
currentMode->yViewportStep = 1;
currentMode->viewportFlags = DGA_FLIP_RETRACE;
currentMode->offset = 0;
if (I830IsPrimary(pScrn)) {
currentMode->address = pI830->FbBase + pI830->FrontBuffer.Start;
} else {
I830Ptr pI8301 = I830PTR(pI830->entityPrivate->pScrn_1);
currentMode->address = pI830->FbBase + pI8301->FrontBuffer2.Start;
}
currentMode->bytesPerScanline = ((pI830->displayWidth * Bpp) + 3) & ~3L;
if (I830IsPrimary(pScrn)) {
currentMode->imageWidth = pI830->FbMemBox.x2;
currentMode->imageHeight = pI830->FbMemBox.y2;
} else {
I830Ptr pI8301 = I830PTR(pI830->entityPrivate->pScrn_1);
currentMode->imageWidth = pI8301->FbMemBox2.x2;
currentMode->imageHeight = pI8301->FbMemBox2.y2;
}
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;
mode_nogood:
pMode = pMode->next;
if (pMode == firstMode)
break;
}
pI830->numDGAModes = num;
pI830->DGAModes = modes;
return DGAInit(pScreen, &I830DGAFuncs, modes, num);
}
static DisplayModePtr I830SavedDGAModes[MAXSCREENS];
static Bool
I830_SetMode(ScrnInfoPtr pScrn, DGAModePtr pMode)
{
int index = pScrn->pScreen->myNum;
I830Ptr pI830 = I830PTR(pScrn);
MARKER();
if (!pMode) { /* restore the original mode */
DPRINTF(PFX, "Restoring original mode (from DGA mode)\n");
if (pI830->DGAactive) {
I830_CloseFramebuffer(pScrn);
pScrn->currentMode = I830SavedDGAModes[index];
pScrn->SwitchMode(index, pScrn->currentMode, 0);
pScrn->AdjustFrame(index, 0, 0, 0);
pI830->DGAactive = FALSE;
}
} else {
if (!pI830->DGAactive) {
DPRINTF(PFX, "Setting DGA mode\n");
I830SavedDGAModes[index] = pScrn->currentMode;
pI830->DGAactive = TRUE;
if (I830IsPrimary(pScrn)) {
pScrn->fbOffset = pI830->FrontBuffer.Start;
}
else {
I830Ptr pI8301 = I830PTR(pI830->entityPrivate->pScrn_1);
pScrn->fbOffset = pI8301->FrontBuffer2.Start;
}
pScrn->displayWidth = pI830->displayWidth;
I830SelectBuffer(pScrn, I830_SELECT_FRONT);
}
pScrn->SwitchMode(index, pMode->mode, 0);
}
return TRUE;
}
static int
I830_GetViewport(ScrnInfoPtr pScrn)
{
I830Ptr pI830 = I830PTR(pScrn);
MARKER();
return pI830->DGAViewportStatus;
}
static void
I830_SetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
{
I830Ptr pI830 = I830PTR(pScrn);
vgaHWPtr hwp = VGAHWPTR(pScrn);
MARKER();
pScrn->AdjustFrame(pScrn->pScreen->myNum, x, y, flags);
/* wait for retrace */
while ((hwp->readST01(hwp) & 0x08)) ;
while (!(hwp->readST01(hwp) & 0x08)) ;
pI830->DGAViewportStatus = 0;
}
static void
I830_FillRect(ScrnInfoPtr pScrn,
int x, int y, int w, int h, unsigned long color)
{
#ifdef I830_USE_XAA
I830Ptr pI830 = I830PTR(pScrn);
MARKER();
if (pI830->AccelInfoRec) {
(*pI830->AccelInfoRec->SetupForSolidFill) (pScrn, color, GXcopy, ~0);
(*pI830->AccelInfoRec->SubsequentSolidFillRect) (pScrn, x, y, w, h);
SET_SYNC_FLAG(pI830->AccelInfoRec);
}
#endif
}
static void
I830_Sync(ScrnInfoPtr pScrn)
{
I830Ptr pI830 = I830PTR(pScrn);
int flags = MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE;
MARKER();
if (pI830->noAccel)
return;
if (IS_I965G(pI830))
flags = 0;
BEGIN_LP_RING(2);
OUT_RING(MI_FLUSH | flags);
OUT_RING(MI_NOOP); /* pad to quadword */
ADVANCE_LP_RING();
I830WaitLpRing(pScrn, pI830->LpRing->mem.Size - 8, 0);
pI830->LpRing->space = pI830->LpRing->mem.Size - 8;
pI830->nextColorExpandBuf = 0;
}
static void
I830_BlitRect(ScrnInfoPtr pScrn,
int srcx, int srcy, int w, int h, int dstx, int dsty)
{
#ifdef I830_USE_XAA
I830Ptr pI830 = I830PTR(pScrn);
MARKER();
if (pI830->AccelInfoRec) {
int xdir = ((srcx < dstx) && (srcy == dsty)) ? -1 : 1;
int ydir = (srcy < dsty) ? -1 : 1;
(*pI830->AccelInfoRec->SetupForScreenToScreenCopy) (pScrn, xdir, ydir,
GXcopy, ~0, -1);
(*pI830->AccelInfoRec->SubsequentScreenToScreenCopy) (pScrn, srcx, srcy,
dstx, dsty, w, h);
SET_SYNC_FLAG(pI830->AccelInfoRec);
}
#endif
}
#if 0
static void
I830_BlitTransRect(ScrnInfoPtr pScrn,
int srcx, int srcy,
int w, int h, int dstx, int dsty, unsigned long color)
{
MARKER();
/* this one should be separate since the XAA function would
* prohibit usage of ~0 as the key */
}
#endif
static Bool
I830_OpenFramebuffer(ScrnInfoPtr pScrn,
char **name,
unsigned char **mem, int *size, int *offset, int *flags)
{
I830Ptr pI830 = I830PTR(pScrn);
MARKER();
*name = NULL; /* no special device */
if (I830IsPrimary(pScrn)) {
*size = pI830->FrontBuffer.Size;
*mem = (unsigned char *)(pI830->LinearAddr + pI830->FrontBuffer.Start);
pScrn->fbOffset = pI830->FrontBuffer.Start;
}
else {
I830Ptr pI8301 = I830PTR(pI830->entityPrivate->pScrn_1);
*size = pI8301->FrontBuffer2.Size;
*mem = (unsigned char *)(pI8301->LinearAddr + pI8301->FrontBuffer2.Start);
pScrn->fbOffset = pI8301->FrontBuffer2.Start;
}
pScrn->displayWidth = pI830->displayWidth;
I830SelectBuffer(pScrn, I830_SELECT_FRONT);
*offset = 0;
*flags = DGA_NEED_ROOT;
DPRINTF(PFX,
" mem == 0x%.8x (pI830->LinearAddr)\n"
"size == %lu (pI830->FbMapSize)\n", *mem, *size);
return TRUE;
}
static void
I830_CloseFramebuffer(ScrnInfoPtr pScrn)
{
I830Ptr pI830 = I830PTR(pScrn);
int i;
/* Good pitches to allow tiling. Don't care about pitches < 1024. */
static const int pitches[] = {
/*
128 * 2,
128 * 4,
*/
128 * 8,
128 * 16,
128 * 32,
128 * 64,
0
};
if (I830IsPrimary(pScrn)) {
if (pI830->rotation != RR_Rotate_0)
pScrn->fbOffset = pI830->RotatedMem.Start;
else
pScrn->fbOffset = pI830->FrontBuffer.Start;
} else {
I830Ptr pI8301 = I830PTR(pI830->entityPrivate->pScrn_1);
if (pI830->rotation != RR_Rotate_0)
pScrn->fbOffset = pI8301->RotatedMem2.Start;
else
pScrn->fbOffset = pI8301->FrontBuffer2.Start;
}
I830SelectBuffer(pScrn, I830_SELECT_FRONT);
switch (pI830->rotation) {
case RR_Rotate_0:
pScrn->displayWidth = pI830->displayWidth;
break;
case RR_Rotate_90:
pScrn->displayWidth = pScrn->pScreen->width;
break;
case RR_Rotate_180:
pScrn->displayWidth = pI830->displayWidth;
break;
case RR_Rotate_270:
pScrn->displayWidth = pScrn->pScreen->width;
break;
}
/* As DRI doesn't run on the secondary head, we know that disableTiling
* is always TRUE.
*/
if (I830IsPrimary(pScrn) && !pI830->disableTiling) {
#if 0
int dWidth = pScrn->displayWidth; /* save current displayWidth */
#endif
for (i = 0; pitches[i] != 0; i++) {
if (pitches[i] >= pScrn->displayWidth) {
pScrn->displayWidth = pitches[i];
break;
}
}
/*
* If the displayWidth is a tilable pitch, test if there's enough
* memory available to enable tiling.
*/
if (pScrn->displayWidth == pitches[i]) {
/* TODO */
}
}
}
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