add initial migration

1 files changed, 146 insertions, 0 deletions

diff --git a/dix/impedance.c b/dix/impedance.c
index add8e89b5..0008268dd 100644
--- a/dix/impedance.c
+++ b/dix/impedance.c
@@ -1243,3 +1243,149 @@ impedRandR12Init(ScreenPtr pScreen)
     return TRUE;
 }
 #endif
+
+static Bool
+dup_pixmap_contents(PixmapPtr pDst, PixmapPtr pSrc)
+{
+    char *image_ptr;
+    int size;
+    GCPtr pGC;
+
+    size = PixmapBytePad(pSrc->drawable.width, pSrc->drawable.depth) * pSrc->drawable.height;
+    image_ptr = malloc(size);
+
+    pSrc->drawable.pScreen->GetImage(&pSrc->drawable, 0, 0, pSrc->drawable.width,
+				     pSrc->drawable.height, ZPixmap, ~0,
+				     image_ptr);
+
+    pGC = GetScratchGC(pSrc->drawable.depth, pDst->drawable.pScreen);
+    pGC->stateChanges &= ~GCTile;
+
+    ValidateGC(&pDst->drawable, pGC);
+
+    pGC->ops->PutImage(&pDst->drawable, pGC, pDst->drawable.depth, 0, 0,
+		       pSrc->drawable.width, pSrc->drawable.height, 0,
+		       ZPixmap, image_ptr);
+
+    FreeScratchGC(pGC);
+    free(image_ptr);
+    return TRUE;
+}
+
+static void dup_pixmap(PixmapPtr pPixmap, ScreenPtr new, int new_gpu_idx)
+{
+    pPixmap->gpu[new_gpu_idx] = new->CreatePixmap(new, pPixmap->drawable.width,
+						  pPixmap->drawable.height,
+						  pPixmap->drawable.depth,
+						  pPixmap->usage_hint);
+
+    dup_pixmap_contents(pPixmap->gpu[new_gpu_idx], pPixmap->gpu[0]);
+}
+
+int
+impedAddScreen(ScreenPtr protocol_master, ScreenPtr new)
+{
+    int new_gpu_index;
+    int ret;
+
+    AttachGPU(protocol_master, new);
+
+    new_gpu_index = protocol_master->num_gpu - 1;
+    ErrorF("hot adding GPU %d\n", new_gpu_index);
+
+    {
+	GCPtr pGC;
+	xorg_list_for_each_entry(pGC, &protocol_master->gc_list, member) {
+	    pGC->gpu[new_gpu_index] = NewGCObject(new, pGC->depth);
+	    ret = new->CreateGC(pGC->gpu[new_gpu_index]);
+	    if (ret == FALSE)
+		ErrorF("failed to create GC\n");
+   	}
+    }
+
+    {
+	PixmapPtr pPixmap;
+	xorg_list_for_each_entry(pPixmap, &protocol_master->pixmap_list, member) {
+	    dup_pixmap(pPixmap, new, new_gpu_index);
+   	}
+    }
+
+    {
+	PicturePtr pPicture;
+	xorg_list_for_each_entry(pPicture, &protocol_master->picture_list, member) {
+	    impedPictureDuplicate(pPicture, new_gpu_index);
+   	}
+    }
+
+    /* set the screen pixmap up correctly */
+    {
+        PixmapPtr pPixmap;
+
+        pPixmap = protocol_master->GetScreenPixmap(protocol_master);
+
+        protocol_master->gpu[new_gpu_index]->SetScreenPixmap(pPixmap->gpu[new_gpu_index]);
+    }
+
+    return 0;
+}
+
+Bool
+impedRemoveScreen(ScreenPtr protocol_master, ScreenPtr slave)
+{
+    int remove_index = -1;
+    int i;
+
+    for (i = 0; i < protocol_master->num_gpu; i++) {
+	if (protocol_master->gpu[i] == slave){
+	    remove_index = i;
+	    break;
+	}
+    }
+    
+    if (remove_index == -1)
+	return FALSE;
+
+    ErrorF("ot removing GPU %d\n", remove_index);
+
+    {
+	PicturePtr pPicture;
+	xorg_list_for_each_entry(pPicture, &protocol_master->picture_list, member) {
+	    PicturePtr tofree = pPicture->gpu[remove_index];
+	    pPicture->gpu[remove_index] = NULL;
+	    for (i = remove_index ; i < protocol_master->num_gpu - 1; i++)
+		pPicture->gpu[i] = pPicture->gpu[i + 1];
+	    FreePicture(tofree, (XID)0);
+	}
+    }
+    {
+	GCPtr pGC;
+	xorg_list_for_each_entry(pGC, &protocol_master->gc_list, member) {
+	    GCPtr tofree = pGC->gpu[remove_index];
+	    pGC->serialNumber = NEXT_SERIAL_NUMBER;
+	    pGC->gpu[remove_index] = NULL;
+	    for (i = remove_index ; i < protocol_master->num_gpu - 1; i++)
+		pGC->gpu[i] = pGC->gpu[i + 1];
+	    FreeGC(tofree, 0);
+	}
+    }
+
+    {
+	PixmapPtr pPixmap;
+	xorg_list_for_each_entry(pPixmap, &protocol_master->pixmap_list, member) {
+	    PixmapPtr tofree = pPixmap->gpu[remove_index];
+	    pPixmap->gpu[remove_index] = NULL;
+	    for (i = remove_index ; i < protocol_master->num_gpu - 1; i++)
+		pPixmap->gpu[i] = pPixmap->gpu[i + 1];
+	    (*slave->DestroyPixmap)(tofree);
+	}
+    }
+
+    protocol_master->gpu[remove_index] = NULL;
+    for (i = remove_index; i < protocol_master->num_gpu - 1; i++)
+	protocol_master->gpu[i] = protocol_master->gpu[i + 1];
+
+    protocol_master->num_gpu--;
+
+    return TRUE;
+}
+