commit 8c856f3735586d59bb53f57ce4d5252cad6ece37
Author: Jay Cotton <jay.cotton@sun.com>
Date:   Thu Mar 1 19:06:52 2007 +0200

    [mach64] Bug 6829: enable PCI bus after S3 suspend (for Sun).

diff --git a/src/aticonsole.c b/src/aticonsole.c
index 7117c69..9ecbf11 100644
--- a/src/aticonsole.c
+++ b/src/aticonsole.c
@@ -514,6 +514,19 @@ ATIEnterGraphics
     ATIPtr      pATI
 )
 {
+    if (pATI->CPIODecoding == BLOCK_IO)
+    {
+        pciVideoPtr  pVideo = pATI->PCIInfo;
+        pciConfigPtr pPCI = pVideo->thisCard;
+        CARD32       PciReg;
+
+        PciReg = pciReadLong(pPCI->tag, PCI_REG_USERCONFIG);
+
+        /* Possibly fix block I/O indicator (after Sun S3 suspend) */
+        if (!(PciReg & 0x00000004U))
+            pciWriteLong(pPCI->tag, PCI_REG_USERCONFIG, PciReg | 0x00000004U);
+    }
+
     /* Map apertures */
     if (!ATIMapApertures(pScreenInfo->scrnIndex, pATI))
         return FALSE;