
Am Montag, den 17.08.2020, 15:06 +0200 schrieb Stefan Roese:
Import platform specific mangle-port.h header, allowing a area specific swapping, which is needed on Octeon for USB & PCI areas.
Imported from Linux v5.7.
Signed-off-by: Stefan Roese sr@denx.de
arch/mips/mach-octeon/include/mangle-port.h | 58 +++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 arch/mips/mach-octeon/include/mangle-port.h
diff --git a/arch/mips/mach-octeon/include/mangle-port.h b/arch/mips/mach-octeon/include/mangle-port.h new file mode 100644 index 0000000000..8ff2cbdf2c --- /dev/null +++ b/arch/mips/mach-octeon/include/mangle-port.h @@ -0,0 +1,58 @@ +/*
- This file is subject to the terms and conditions of the GNU General Public
- License. See the file "COPYING" in the main directory of this archive
- for more details.
- Copyright (C) 2003, 2004 Ralf Baechle
- */
when importing headers from Linux, please remove the license text and just keep copyrights and optionally additonal info text. At the top insert the SPDX identifier, e.g.
/* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright (C) 2003, 2004 Ralf Baechle */
+#ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H +#define __ASM_MACH_GENERIC_MANGLE_PORT_H
+#include <asm/byteorder.h>
+#ifdef __BIG_ENDIAN
+static inline bool __should_swizzle_bits(volatile void *a) +{
- extern const bool octeon_should_swizzle_table[];
- u64 did = ((u64)(uintptr_t)a >> 40) & 0xff;
- return octeon_should_swizzle_table[did];
+}
+# define __swizzle_addr_b(port) (port) +# define __swizzle_addr_w(port) (port) +# define __swizzle_addr_l(port) (port) +# define __swizzle_addr_q(port) (port)
+#else /* __LITTLE_ENDIAN */
+#define __should_swizzle_bits(a) false
+static inline bool __should_swizzle_addr(u64 p) +{
- /* boot bus? */
- return ((p >> 40) & 0xff) == 0;
+}
+# define __swizzle_addr_b(port) \
- (__should_swizzle_addr(port) ? (port) ^ 7 : (port))
+# define __swizzle_addr_w(port) \
- (__should_swizzle_addr(port) ? (port) ^ 6 : (port))
+# define __swizzle_addr_l(port) \
- (__should_swizzle_addr(port) ? (port) ^ 4 : (port))
+# define __swizzle_addr_q(port) (port)
+#endif /* __BIG_ENDIAN */
+# define ioswabb(a, x) (x) +# define __mem_ioswabb(a, x) (x) +# define ioswabw(a, x) (__should_swizzle_bits(a) ? le16_to_cpu(x) : x) +# define __mem_ioswabw(a, x) (x) +# define ioswabl(a, x) (__should_swizzle_bits(a) ? le32_to_cpu(x) : x) +# define __mem_ioswabl(a, x) (x) +# define ioswabq(a, x) (__should_swizzle_bits(a) ? le64_to_cpu(x) : x) +# define __mem_ioswabq(a, x) (x)
+#endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */