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-rw-r--r--xorg-server/exa/exa_classic.c258
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diff --git a/xorg-server/exa/exa_classic.c b/xorg-server/exa/exa_classic.c
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+/*
+ * Copyright © 2009 Maarten Maathuis
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+
+#include "exa_priv.h"
+#include "exa.h"
+
+/* This file holds the classic exa specific implementation. */
+
+static _X_INLINE void*
+ExaGetPixmapAddress(PixmapPtr p)
+{
+ ExaPixmapPriv(p);
+
+ if (pExaPixmap->offscreen && pExaPixmap->fb_ptr)
+ return pExaPixmap->fb_ptr;
+ else
+ return pExaPixmap->sys_ptr;
+}
+
+/**
+ * exaCreatePixmap() creates a new pixmap.
+ *
+ * If width and height are 0, this won't be a full-fledged pixmap and it will
+ * get ModifyPixmapHeader() called on it later. So, we mark it as pinned, because
+ * ModifyPixmapHeader() would break migration. These types of pixmaps are used
+ * for scratch pixmaps, or to represent the visible screen.
+ */
+PixmapPtr
+exaCreatePixmap_classic(ScreenPtr pScreen, int w, int h, int depth,
+ unsigned usage_hint)
+{
+ PixmapPtr pPixmap;
+ ExaPixmapPrivPtr pExaPixmap;
+ BoxRec box;
+ int bpp;
+ ExaScreenPriv(pScreen);
+
+ if (w > 32767 || h > 32767)
+ return NullPixmap;
+
+ swap(pExaScr, pScreen, CreatePixmap);
+ pPixmap = pScreen->CreatePixmap (pScreen, w, h, depth, usage_hint);
+ swap(pExaScr, pScreen, CreatePixmap);
+
+ if (!pPixmap)
+ return NULL;
+
+ pExaPixmap = ExaGetPixmapPriv(pPixmap);
+ pExaPixmap->driverPriv = NULL;
+
+ bpp = pPixmap->drawable.bitsPerPixel;
+
+ pExaPixmap->driverPriv = NULL;
+ /* Scratch pixmaps may have w/h equal to zero, and may not be
+ * migrated.
+ */
+ if (!w || !h)
+ pExaPixmap->score = EXA_PIXMAP_SCORE_PINNED;
+ else
+ pExaPixmap->score = EXA_PIXMAP_SCORE_INIT;
+
+ pExaPixmap->sys_ptr = pPixmap->devPrivate.ptr;
+ pExaPixmap->sys_pitch = pPixmap->devKind;
+
+ pPixmap->devPrivate.ptr = NULL;
+ pExaPixmap->offscreen = FALSE;
+
+ pExaPixmap->fb_ptr = NULL;
+ exaSetFbPitch(pExaScr, pExaPixmap, w, h, bpp);
+ pExaPixmap->fb_size = pExaPixmap->fb_pitch * h;
+
+ if (pExaPixmap->fb_pitch > 131071) {
+ swap(pExaScr, pScreen, DestroyPixmap);
+ pScreen->DestroyPixmap (pPixmap);
+ swap(pExaScr, pScreen, DestroyPixmap);
+ return NULL;
+ }
+
+ /* Set up damage tracking */
+ pExaPixmap->pDamage = DamageCreate (NULL, NULL,
+ DamageReportNone, TRUE,
+ pScreen, pPixmap);
+
+ if (pExaPixmap->pDamage == NULL) {
+ swap(pExaScr, pScreen, DestroyPixmap);
+ pScreen->DestroyPixmap (pPixmap);
+ swap(pExaScr, pScreen, DestroyPixmap);
+ return NULL;
+ }
+
+ DamageRegister (&pPixmap->drawable, pExaPixmap->pDamage);
+ /* This ensures that pending damage reflects the current operation. */
+ /* This is used by exa to optimize migration. */
+ DamageSetReportAfterOp (pExaPixmap->pDamage, TRUE);
+
+ pExaPixmap->area = NULL;
+
+ /* We set the initial pixmap as completely valid for a simple reason.
+ * Imagine a 1000x1000 pixmap, it has 1 million pixels, 250000 of which
+ * could form single pixel rects as part of a region. Setting the complete region
+ * as valid is a natural defragmentation of the region.
+ */
+ box.x1 = 0;
+ box.y1 = 0;
+ box.x2 = w;
+ box.y2 = h;
+ REGION_INIT(pScreen, &pExaPixmap->validSys, &box, 0);
+ REGION_INIT(pScreen, &pExaPixmap->validFB, &box, 0);
+
+ exaSetAccelBlock(pExaScr, pExaPixmap,
+ w, h, bpp);
+
+ return pPixmap;
+}
+
+Bool
+exaModifyPixmapHeader_classic(PixmapPtr pPixmap, int width, int height, int depth,
+ int bitsPerPixel, int devKind, pointer pPixData)
+{
+ ScreenPtr pScreen = pPixmap->drawable.pScreen;
+ ExaScreenPrivPtr pExaScr;
+ ExaPixmapPrivPtr pExaPixmap;
+ Bool ret;
+
+ if (!pPixmap)
+ return FALSE;
+
+ pExaScr = ExaGetScreenPriv(pScreen);
+ pExaPixmap = ExaGetPixmapPriv(pPixmap);
+
+ if (pExaPixmap) {
+ if (pPixData)
+ pExaPixmap->sys_ptr = pPixData;
+
+ if (devKind > 0)
+ pExaPixmap->sys_pitch = devKind;
+
+ /* Classic EXA:
+ * - Framebuffer.
+ * - Scratch pixmap with offscreen memory.
+ */
+ if (pExaScr->info->memoryBase && pPixData) {
+ if ((CARD8 *)pPixData >= pExaScr->info->memoryBase &&
+ ((CARD8 *)pPixData - pExaScr->info->memoryBase) <
+ pExaScr->info->memorySize) {
+ pExaPixmap->fb_ptr = pPixData;
+ pExaPixmap->fb_pitch = devKind;
+ pExaPixmap->offscreen = TRUE;
+ }
+ }
+
+ if (width > 0 && height > 0 && bitsPerPixel > 0) {
+ exaSetFbPitch(pExaScr, pExaPixmap,
+ width, height, bitsPerPixel);
+
+ exaSetAccelBlock(pExaScr, pExaPixmap,
+ width, height, bitsPerPixel);
+ }
+
+ /* Pixmaps subject to ModifyPixmapHeader will be pinned to system or
+ * offscreen memory, so there's no need to track damage.
+ */
+ if (pExaPixmap->pDamage) {
+ DamageUnregister(&pPixmap->drawable, pExaPixmap->pDamage);
+ DamageDestroy(pExaPixmap->pDamage);
+ pExaPixmap->pDamage = NULL;
+ }
+ }
+
+ swap(pExaScr, pScreen, ModifyPixmapHeader);
+ ret = pScreen->ModifyPixmapHeader(pPixmap, width, height, depth,
+ bitsPerPixel, devKind, pPixData);
+ swap(pExaScr, pScreen, ModifyPixmapHeader);
+
+ /* Always NULL this, we don't want lingering pointers. */
+ pPixmap->devPrivate.ptr = NULL;
+
+ return ret;
+}
+
+Bool
+exaDestroyPixmap_classic (PixmapPtr pPixmap)
+{
+ ScreenPtr pScreen = pPixmap->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+ Bool ret;
+
+ if (pPixmap->refcnt == 1)
+ {
+ ExaPixmapPriv (pPixmap);
+
+ if (pExaPixmap->area)
+ {
+ DBG_PIXMAP(("-- 0x%p (0x%x) (%dx%d)\n",
+ (void*)pPixmap->drawable.id,
+ ExaGetPixmapPriv(pPixmap)->area->offset,
+ pPixmap->drawable.width,
+ pPixmap->drawable.height));
+ /* Free the offscreen area */
+ exaOffscreenFree (pPixmap->drawable.pScreen, pExaPixmap->area);
+ pPixmap->devPrivate.ptr = pExaPixmap->sys_ptr;
+ pPixmap->devKind = pExaPixmap->sys_pitch;
+ }
+ REGION_UNINIT(pPixmap->drawable.pScreen, &pExaPixmap->validSys);
+ REGION_UNINIT(pPixmap->drawable.pScreen, &pExaPixmap->validFB);
+ }
+
+ swap(pExaScr, pScreen, DestroyPixmap);
+ ret = pScreen->DestroyPixmap (pPixmap);
+ swap(pExaScr, pScreen, DestroyPixmap);
+
+ return ret;
+}
+
+Bool
+exaPixmapIsOffscreen_classic(PixmapPtr pPixmap)
+{
+ ScreenPtr pScreen = pPixmap->drawable.pScreen;
+ ExaScreenPriv(pScreen);
+ ExaPixmapPriv(pPixmap);
+ Bool ret;
+
+ if (pExaScr->info->PixmapIsOffscreen) {
+ pPixmap->devPrivate.ptr = ExaGetPixmapAddress(pPixmap);
+ ret = pExaScr->info->PixmapIsOffscreen(pPixmap);
+ pPixmap->devPrivate.ptr = NULL;
+ } else
+ ret = (pExaPixmap->offscreen && pExaPixmap->fb_ptr);
+
+ return ret;
+}
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