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authorJim Harris <jimharris@FreeBSD.org>2012-12-06 22:33:31 +0000
committerJim Harris <jimharris@FreeBSD.org>2012-12-06 22:33:31 +0000
commit71a30c4436050b621d9ea0055d4b0a00ca26b40d (patch)
tree1b2bb07832431e4632b97ebf7f4f60942fa40c65
parentbf5a1b6502d930e5ff552b6616e7bafe8d575920 (diff)
downloadsrc-71a30c4436050b621d9ea0055d4b0a00ca26b40d.tar.gz
src-71a30c4436050b621d9ea0055d4b0a00ca26b40d.zip
Add amd64 implementations for 8-byte bus_space routines.
Submitted by: Carl Delsey <carl.r.delsey@intel.com> Discussed with: jhb, rwatson Reviewed by: jimharris MFC after: 1 week
Notes
Notes: svn path=/head/; revision=243960
-rw-r--r--sys/amd64/include/bus.h151
-rw-r--r--sys/i386/include/bus.h22
-rw-r--r--sys/x86/include/bus.h38
3 files changed, 171 insertions, 40 deletions
diff --git a/sys/amd64/include/bus.h b/sys/amd64/include/bus.h
index f1af2cf6168c..7594eb4e7826 100644
--- a/sys/amd64/include/bus.h
+++ b/sys/amd64/include/bus.h
@@ -1,6 +1,153 @@
/*-
- * This file is in the public domain.
+ * Copyright (c) 2012 Intel Corporation
+ * Copyright (c) 2009 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * $FreeBSD$
*/
-/* $FreeBSD$ */
+#ifndef _MACHINE_BUS_H_
+#define _MACHINE_BUS_H_
+
+#include <sys/systm.h>
#include <x86/bus.h>
+
+#define KASSERT_BUS_SPACE_MEM_ONLY(tag) \
+ KASSERT((tag) == X86_BUS_SPACE_MEM, \
+ ("%s: can only handle mem space", __func__))
+
+static __inline uint64_t
+bus_space_read_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs)
+{
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ return (*(volatile uint64_t *)(bsh + ofs));
+}
+
+static __inline void
+bus_space_write_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs, uint64_t val)
+{
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ *(volatile uint64_t *)(bsh + ofs) = val;
+}
+
+static __inline void
+bus_space_read_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs, uint64_t *bufp, size_t count)
+{
+ volatile uint64_t *bsp;
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ bsp = (void *)(bsh + ofs);
+ while (count-- > 0)
+ *bufp++ = *bsp++;
+}
+
+static __inline void
+bus_space_write_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs, uint64_t const *bufp, size_t count)
+{
+ volatile uint64_t *bsp;
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ bsp = (void *)(bsh + ofs);
+ while (count-- > 0)
+ *bsp++ = *bufp++;
+}
+
+static __inline void
+bus_space_set_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs, uint64_t val, size_t count)
+{
+ volatile uint64_t *bsp;
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ bsp = (void *)(bsh + ofs);
+ while (count-- > 0)
+ *bsp++ = val;
+}
+
+static __inline void
+bus_space_copy_region_8(bus_space_tag_t tag, bus_space_handle_t sbsh,
+ bus_size_t sofs, bus_space_handle_t dbsh, bus_size_t dofs, size_t count)
+{
+ volatile uint64_t *dst, *src;
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ src = (void *)(sbsh + sofs);
+ dst = (void *)(dbsh + dofs);
+ if (src < dst) {
+ src += count - 1;
+ dst += count - 1;
+ while (count-- > 0)
+ *dst-- = *src--;
+ } else {
+ while (count-- > 0)
+ *dst++ = *src++;
+ }
+}
+
+static __inline void
+bus_space_read_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs, uint64_t *bufp, size_t count)
+{
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ while (count-- > 0)
+ *bufp++ = *(volatile uint64_t *)(bsh + ofs);
+}
+
+static __inline void
+bus_space_write_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs, uint64_t const *bufp, size_t count)
+{
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ while (count-- > 0)
+ *(volatile uint64_t *)(bsh + ofs) = *bufp++;
+}
+
+static __inline void
+bus_space_set_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
+ bus_size_t ofs, uint64_t val, size_t count)
+{
+
+ KASSERT_BUS_SPACE_MEM_ONLY(tag);
+
+ while (count-- > 0)
+ *(volatile uint64_t *)(bsh + ofs) = val;
+}
+
+#endif /*_MACHINE_BUS_H_*/
diff --git a/sys/i386/include/bus.h b/sys/i386/include/bus.h
index f1af2cf6168c..6d6d36fd4031 100644
--- a/sys/i386/include/bus.h
+++ b/sys/i386/include/bus.h
@@ -3,4 +3,26 @@
*/
/* $FreeBSD$ */
+#ifndef _MACHINE_BUS_H_
+#define _MACHINE_BUS_H_
+
#include <x86/bus.h>
+
+/*
+ * The functions:
+ * bus_space_read_8
+ * bus_space_read_region_8
+ * bus_space_write_8
+ * bus_space_write_multi_8
+ * bus_space_write_region_8
+ * bus_space_set_multi_8
+ * bus_space_set_region_8
+ * bus_space_copy_region_8
+ * bus_space_read_multi_8
+ * are unimplemented for i386 because there is no way to do a 64-bit move in
+ * this architecture. It is possible to do two 32-bit moves, but this is
+ * not atomic and may have hardware dependencies that should be fully
+ * understood.
+ */
+
+#endif /*_MACHINE_BUS_H_*/
diff --git a/sys/x86/include/bus.h b/sys/x86/include/bus.h
index fb5babf43268..f4369d96e6f8 100644
--- a/sys/x86/include/bus.h
+++ b/sys/x86/include/bus.h
@@ -251,10 +251,6 @@ bus_space_read_4(bus_space_tag_t tag, bus_space_handle_t handle,
return (*(volatile u_int32_t *)(handle + offset));
}
-#if 0 /* Cause a link error for bus_space_read_8 */
-#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
-#endif
-
/*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle/offset and copy into buffer provided.
@@ -337,10 +333,6 @@ bus_space_read_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
-#if 0 /* Cause a link error for bus_space_read_multi_8 */
-#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
-#endif
-
/*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle and starting at `offset' and copy into
@@ -458,10 +450,6 @@ bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
-#if 0 /* Cause a link error for bus_space_read_region_8 */
-#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
-#endif
-
/*
* Write the 1, 2, 4, or 8 byte value `value' to bus space
* described by tag/handle/offset.
@@ -512,10 +500,6 @@ bus_space_write_4(bus_space_tag_t tag, bus_space_handle_t bsh,
*(volatile u_int32_t *)(bsh + offset) = value;
}
-#if 0 /* Cause a link error for bus_space_write_8 */
-#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
-#endif
-
/*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
* provided to bus space described by tag/handle/offset.
@@ -601,11 +585,6 @@ bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
-#if 0 /* Cause a link error for bus_space_write_multi_8 */
-#define bus_space_write_multi_8(t, h, o, a, c) \
- !!! bus_space_write_multi_8 unimplemented !!!
-#endif
-
/*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
* to bus space described by tag/handle starting at `offset'.
@@ -723,11 +702,6 @@ bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
-#if 0 /* Cause a link error for bus_space_write_region_8 */
-#define bus_space_write_region_8 \
- !!! bus_space_write_region_8 unimplemented !!!
-#endif
-
/*
* Write the 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle/offset `count' times.
@@ -788,10 +762,6 @@ bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
*(volatile u_int32_t *)(addr) = value;
}
-#if 0 /* Cause a link error for bus_space_set_multi_8 */
-#define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!!
-#endif
-
/*
* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle starting at `offset'.
@@ -852,10 +822,6 @@ bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
*(volatile u_int32_t *)(addr) = value;
}
-#if 0 /* Cause a link error for bus_space_set_region_8 */
-#define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!!
-#endif
-
/*
* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
@@ -984,10 +950,6 @@ bus_space_copy_region_4(bus_space_tag_t tag, bus_space_handle_t bsh1,
}
}
-#if 0 /* Cause a link error for bus_space_copy_8 */
-#define bus_space_copy_region_8 !!! bus_space_copy_region_8 unimplemented !!!
-#endif
-
/*
* Bus read/write barrier methods.
*