svn commit: r210140 - projects/ofed/head/sys/ofed/include/linux
Jeff Roberson
jeff at FreeBSD.org
Thu Jul 15 21:47:30 UTC 2010
Author: jeff
Date: Thu Jul 15 21:47:30 2010
New Revision: 210140
URL: http://svn.freebsd.org/changeset/base/210140
Log:
- Add a somewhat x86/amd64 specific set of io routines. Using bus space is
complicated because linux passes only physical/virtual addresses around
while bus-space wants an opaque tag. We may have to create a hash for
platforms which can't directly access io memory.
Sponsored by: Isilon Systems, iX Systems, and Panasas.
Modified:
projects/ofed/head/sys/ofed/include/linux/io.h
Modified: projects/ofed/head/sys/ofed/include/linux/io.h
==============================================================================
--- projects/ofed/head/sys/ofed/include/linux/io.h Thu Jul 15 21:44:26 2010 (r210139)
+++ projects/ofed/head/sys/ofed/include/linux/io.h Thu Jul 15 21:47:30 2010 (r210140)
@@ -29,6 +29,22 @@
#ifndef _LINUX_IO_H_
#define _LINUX_IO_H_
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <machine/pmap.h>
+
+static inline uint32_t
+__raw_readl(const volatile void *addr)
+{
+ return *(const volatile uint32_t *)addr;
+}
+
+static inline void
+__raw_writel(uint32_t b, volatile void *addr)
+{
+ *(volatile uint32_t *)addr = b;
+}
+
static inline uint64_t
__raw_readq(const volatile void *addr)
{
@@ -41,4 +57,44 @@ __raw_writeq(uint64_t b, volatile void *
*(volatile uint64_t *)addr = b;
}
+/*
+ * XXX This is all x86 specific. It should be bus space access.
+ */
+#define mmiowb()
+
+#undef writel
+static inline void
+writel(uint32_t b, void *addr)
+{
+ *(volatile uint32_t *)addr = b;
+}
+
+#undef writeq
+static inline void
+writeq(uint64_t b, void *addr)
+{
+ *(volatile uint64_t *)addr = b;
+}
+
+#undef writeb
+static inline void
+writeb(uint8_t b, void *addr)
+{
+ *(volatile uint8_t *)addr = b;
+}
+
+#undef writew
+static inline void
+writew(uint16_t b, void *addr)
+{
+ *(volatile uint16_t *)addr = b;
+}
+
+#define ioremap pmap_mapdev
+
+/*
+ * iounmap is not defined as pmap_unmapdev requires a length that can
+ * not easily be determined on BSD.
+ */
+
#endif /* _LINUX_IO_H_ */
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