281 lines
7.4 KiB
C
281 lines
7.4 KiB
C
/*
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* XXX So far, for GXxor this is about 40% of the speed of SW, but CPU
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* utilisation falls from 95% to < 5%.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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/**************************************************************************
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Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
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All Rights Reserved.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sub license, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice (including the
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next paragraph) shall be included in all copies or substantial portions
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of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
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ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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**************************************************************************/
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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i830_accel.c,v 1.8 2003/04/24 18:00:24 eich Exp $ */
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/*
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* Reformatted with GNU indent (2.2.8), using the following options:
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*
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* -bad -bap -c41 -cd0 -ncdb -ci6 -cli0 -cp0 -ncs -d0 -di3 -i3 -ip3 -l78
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* -lp -npcs -psl -sob -ss -br -ce -sc -hnl
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*
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* This provides a good match with the original i810 code and preferred
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* XFree86 formatting conventions.
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*
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* When editing this driver, please follow the existing formatting, and edit
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* with <TAB> characters expanded at 8-column intervals.
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*/
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/*
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* Authors:
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* Keith Whitwell <keith@tungstengraphics.com>
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*
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*/
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#include "xf86.h"
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#include "xaarop.h"
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#include "i830.h"
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#include "i810_reg.h"
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#include "i830_debug.h"
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unsigned long
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intel_get_pixmap_offset(PixmapPtr pPix)
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{
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ScreenPtr pScreen = pPix->drawable.pScreen;
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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I830Ptr pI830 = I830PTR(pScrn);
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#ifdef I830_USE_EXA
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if (pI830->useEXA)
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return exaGetPixmapOffset(pPix);
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#endif
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return (unsigned long)pPix->devPrivate.ptr - (unsigned long)pI830->FbBase;
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}
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unsigned long
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intel_get_pixmap_pitch(PixmapPtr pPix)
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{
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ScreenPtr pScreen = pPix->drawable.pScreen;
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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I830Ptr pI830 = I830PTR(pScrn);
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#ifdef I830_USE_EXA
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if (pI830->useEXA)
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return exaGetPixmapPitch(pPix);
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#endif
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#ifdef I830_USE_XAA
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return (unsigned long)pPix->devKind;
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#endif
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}
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int
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I830WaitLpRing(ScrnInfoPtr pScrn, int n, int timeout_millis)
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{
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I830Ptr pI830 = I830PTR(pScrn);
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I830RingBuffer *ring = pI830->LpRing;
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int iters = 0;
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int start = 0;
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int now = 0;
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int last_head = 0;
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int first = 0;
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/* If your system hasn't moved the head pointer in 2 seconds, I'm going to
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* call it crashed.
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*/
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if (timeout_millis == 0)
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timeout_millis = 2000;
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if (I810_DEBUG & DEBUG_VERBOSE_ACCEL) {
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ErrorF("I830WaitLpRing %d\n", n);
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first = GetTimeInMillis();
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}
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while (ring->space < n) {
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ring->head = INREG(LP_RING + RING_HEAD) & I830_HEAD_MASK;
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ring->space = ring->head - (ring->tail + 8);
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if (ring->space < 0)
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ring->space += ring->mem->size;
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iters++;
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now = GetTimeInMillis();
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if (start == 0 || now < start || ring->head != last_head) {
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if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
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if (now > start)
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ErrorF("space: %d wanted %d\n", ring->space, n);
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start = now;
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last_head = ring->head;
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} else if (now - start > timeout_millis) {
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ErrorF("Error in I830WaitLpRing(), now is %d, start is %d\n", now,
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start);
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i830_dump_error_state(pScrn);
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ErrorF("space: %d wanted %d\n", ring->space, n);
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#ifdef XF86DRI
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if (pI830->directRenderingEnabled) {
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DRIUnlock(screenInfo.screens[pScrn->scrnIndex]);
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DRICloseScreen(screenInfo.screens[pScrn->scrnIndex]);
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}
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#endif
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#ifdef I830_USE_XAA
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pI830->AccelInfoRec = NULL; /* Stops recursive behavior */
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#endif
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#ifdef I830_USE_EXA
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pI830->EXADriverPtr = NULL;
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#endif
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FatalError("lockup\n");
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}
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DELAY(10);
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}
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if (I810_DEBUG & DEBUG_VERBOSE_ACCEL) {
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now = GetTimeInMillis();
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if (now - first) {
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ErrorF("Elapsed %d ms\n", now - first);
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ErrorF("space: %d wanted %d\n", ring->space, n);
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}
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}
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return iters;
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}
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void
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I830Sync(ScrnInfoPtr pScrn)
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{
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I830Ptr pI830 = I830PTR(pScrn);
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int flags = MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE;
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if (I810_DEBUG & (DEBUG_VERBOSE_ACCEL | DEBUG_VERBOSE_SYNC))
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ErrorF("I830Sync\n");
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#ifdef XF86DRI
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/* VT switching tries to do this.
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*/
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if (!pI830->LockHeld && pI830->directRenderingEnabled) {
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return;
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}
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#endif
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if (pI830->entityPrivate && !pI830->entityPrivate->RingRunning) return;
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if (IS_I965G(pI830))
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flags = 0;
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/* Send a flush instruction and then wait till the ring is empty.
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* This is stronger than waiting for the blitter to finish as it also
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* flushes the internal graphics caches.
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*/
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{
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BEGIN_LP_RING(2);
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OUT_RING(MI_FLUSH | flags);
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OUT_RING(MI_NOOP); /* pad to quadword */
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ADVANCE_LP_RING();
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}
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I830WaitLpRing(pScrn, pI830->LpRing->mem->size - 8, 0);
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pI830->LpRing->space = pI830->LpRing->mem->size - 8;
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pI830->nextColorExpandBuf = 0;
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}
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void
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I830EmitFlush(ScrnInfoPtr pScrn)
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{
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I830Ptr pI830 = I830PTR(pScrn);
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int flags = MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE;
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if (IS_I965G(pI830))
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flags = 0;
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{
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BEGIN_LP_RING(2);
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OUT_RING(MI_FLUSH | flags);
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OUT_RING(MI_NOOP); /* pad to quadword */
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ADVANCE_LP_RING();
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}
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}
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void
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I830SelectBuffer(ScrnInfoPtr pScrn, int buffer)
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{
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I830Ptr pI830 = I830PTR(pScrn);
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switch (buffer) {
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#ifdef XF86DRI
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case I830_SELECT_BACK:
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pI830->bufferOffset = pI830->back_buffer->offset;
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break;
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case I830_SELECT_THIRD:
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pI830->bufferOffset = pI830->third_buffer->offset;
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break;
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case I830_SELECT_DEPTH:
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pI830->bufferOffset = pI830->depth_buffer->offset;
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break;
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#endif
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default:
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case I830_SELECT_FRONT:
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pI830->bufferOffset = pScrn->fbOffset;
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break;
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}
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if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
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ErrorF("I830SelectBuffer %d --> offset %x\n",
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buffer, pI830->bufferOffset);
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}
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void
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I830RefreshRing(ScrnInfoPtr pScrn)
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{
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I830Ptr pI830 = I830PTR(pScrn);
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pI830->LpRing->head = INREG(LP_RING + RING_HEAD) & I830_HEAD_MASK;
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pI830->LpRing->tail = INREG(LP_RING + RING_TAIL);
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pI830->LpRing->space = pI830->LpRing->head - (pI830->LpRing->tail + 8);
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if (pI830->LpRing->space < 0)
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pI830->LpRing->space += pI830->LpRing->mem->size;
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i830MarkSync(pScrn);
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}
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/* The following function sets up the supported acceleration. Call it
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* from the FbInit() function in the SVGA driver, or before ScreenInit
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* in a monolithic server.
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*/
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Bool
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I830AccelInit(ScreenPtr pScreen)
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{
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#ifdef I830_USE_EXA
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ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
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I830Ptr pI830 = I830PTR(pScrn);
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if (pI830->useEXA)
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return I830EXAInit(pScreen);
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#endif
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#ifdef I830_USE_XAA
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return I830XAAInit(pScreen);
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#endif
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return FALSE;
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}
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