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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/lib/iomap.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/mips/lib/iomap.c')
-rw-r--r--arch/mips/lib/iomap.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/mips/lib/iomap.c b/arch/mips/lib/iomap.c
new file mode 100644
index 00000000000..b5d5fa83376
--- /dev/null
+++ b/arch/mips/lib/iomap.c
@@ -0,0 +1,78 @@
+/*
+ * iomap.c, Memory Mapped I/O routines for MIPS architecture.
+ *
+ * This code is based on lib/iomap.c, by Linus Torvalds.
+ *
+ * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include <asm/io.h>
+
+void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+ unsigned long end;
+
+ end = port + nr - 1UL;
+ if (ioport_resource.start > port ||
+ ioport_resource.end < end || port > end)
+ return NULL;
+
+ return (void __iomem *)(mips_io_port_base + port);
+}
+
+void ioport_unmap(void __iomem *addr)
+{
+}
+EXPORT_SYMBOL(ioport_map);
+EXPORT_SYMBOL(ioport_unmap);
+
+void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
+{
+ unsigned long start, len, flags;
+
+ if (dev == NULL)
+ return NULL;
+
+ start = pci_resource_start(dev, bar);
+ len = pci_resource_len(dev, bar);
+ if (!start || !len)
+ return NULL;
+
+ if (maxlen != 0 && len > maxlen)
+ len = maxlen;
+
+ flags = pci_resource_flags(dev, bar);
+ if (flags & IORESOURCE_IO)
+ return ioport_map(start, len);
+ if (flags & IORESOURCE_MEM) {
+ if (flags & IORESOURCE_CACHEABLE)
+ return ioremap_cacheable_cow(start, len);
+ return ioremap_nocache(start, len);
+ }
+
+ return NULL;
+}
+
+void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{
+ iounmap(addr);
+}
+EXPORT_SYMBOL(pci_iomap);
+EXPORT_SYMBOL(pci_iounmap);