svn commit: r208740 - user/jmallett/octeon/sys/mips/cavium

[Juli Mallett]

Author: jmallett
Date: Wed Jun  2 11:15:12 2010
New Revision: 208740
URL: http://svn.freebsd.org/changeset/base/208740

Log:
  Note some lurking problems with io ports (namely the dependence on virtual
  mappings.)

Modified:
  user/jmallett/octeon/sys/mips/cavium/octopci.c

Modified: user/jmallett/octeon/sys/mips/cavium/octopci.c
==============================================================================
--- user/jmallett/octeon/sys/mips/cavium/octopci.c	Wed Jun  2 11:13:49 2010	(r208739)
+++ user/jmallett/octeon/sys/mips/cavium/octopci.c	Wed Jun  2 11:15:12 2010	(r208740)
@@ -208,6 +208,15 @@ octopci_alloc_resource(device_t bus, dev
 		break;
 	case SYS_RES_IOPORT:
 		rman_set_bushandle(res, CVMX_ADDR_DID(CVMX_FULL_DID(CVMX_OCT_DID_PCI, CVMX_OCT_SUBDID_PCI_IO)) + rman_get_start(res));
+		/*
+		 * XXX
+		 * We should just disallow use of io ports on !n64 since without
+		 * 64-bit PTEs we can't even do a 32-bit virtual address
+		 * mapped to them.
+		 */
+#if 0
+		rman_set_virtual(res, (void *)rman_get_bushandle(res));
+#endif
 		break;
 	}