svn commit: r258051 - head/sys/powerpc/pseries

[Nathan Whitehorn]

Author: nwhitehorn
Date: Tue Nov 12 16:14:45 2013
New Revision: 258051
URL: http://svnweb.freebsd.org/changeset/base/258051

Log:
  Actually add IOMMU domain to the list of known mappings. This fixes a bug
  where multiple devices in the same IOMMU domain would be allocated
  conflicting mappings unless they also shared a DMA tag.
  
  MFC after:	3 days

Modified:
  head/sys/powerpc/pseries/plpar_iommu.c

Modified: head/sys/powerpc/pseries/plpar_iommu.c
==============================================================================
--- head/sys/powerpc/pseries/plpar_iommu.c	Tue Nov 12 16:08:23 2013	(r258050)
+++ head/sys/powerpc/pseries/plpar_iommu.c	Tue Nov 12 16:14:45 2013	(r258051)
@@ -115,6 +115,8 @@ phyp_iommu_set_dma_tag(device_t bus, dev
 		    (((uint64_t)(dmawindow[dma_acells + 1]) << 32) |
 		    dmawindow[dma_acells + 2]);
 
+	if (bootverbose)
+		device_printf(dev, "Mapping IOMMU domain %#x\n", dmawindow[0]);
 	window->map = NULL;
 	SLIST_FOREACH(i, &iommu_map_head, entries) {
 		if (i->iobn == dmawindow[0]) {
@@ -134,6 +136,7 @@ phyp_iommu_set_dma_tag(device_t bus, dev
 		window->map->vmem = vmem_create("IOMMU mappings", PAGE_SIZE,
 		    trunc_page(VMEM_ADDR_MAX) - PAGE_SIZE, PAGE_SIZE, 0,
 		    M_BESTFIT | M_NOWAIT);
+		SLIST_INSERT_HEAD(&iommu_map_head, window->map, entries);
 	}
 
 	/*