Add a mips implementation of OF_decode_addr().

1 files changed, 70 insertions, 0 deletions

diff --git a/sys/mips/mips/ofw_machdep.c b/sys/mips/mips/ofw_machdep.c
new file mode 100644
index 0000000..82e2959
--- /dev/null
+++ b/sys/mips/mips/ofw_machdep.c
@@ -0,0 +1,70 @@
+/*-
+ * Copyright (c) 2015 Ian Lepore <ian@freebsd.org>
+ * All rights excluded.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_subr.h>
+
+int
+OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag,
+    bus_space_handle_t *handle)
+{
+	bus_addr_t addr;
+	bus_size_t size;
+	pcell_t pci_hi;
+	int flags, res;
+
+	res = ofw_reg_to_paddr(dev, regno, &addr, &size, &pci_hi);
+	if (res < 0)
+		return (res);
+
+	/*
+	 * Nothing special to do for PCI busses right now.
+	 * This may need to be handled per-platform when it does come up.
+	 */
+#ifdef notyet
+	if (pci_hi == OFW_PADDR_NOT_PCI) {
+		*tag = fdtbus_bs_tag;
+		flags = 0;
+	} else {
+		*tag = fdtbus_bs_tag;
+		flags = (pci_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) ? 
+		    BUS_SPACE_MAP_PREFETCHABLE: 0;
+	}
+#else
+	*tag = fdtbus_bs_tag;
+	flags = 0;
+#endif
+	return (bus_space_map(*tag, addr, size, flags, handle));
+}