mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
258 lines
7.0 KiB
C
258 lines
7.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* IO header file
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*
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* Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
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* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
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*/
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#ifndef __ASM_M68K_IO_H__
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#define __ASM_M68K_IO_H__
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#include <asm/byteorder.h>
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#ifndef _IO_BASE
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#define _IO_BASE 0
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#endif
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#define __raw_readb(addr) (*(volatile u8 *)(addr))
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#define __raw_readw(addr) (*(volatile u16 *)(addr))
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#define __raw_readl(addr) (*(volatile u32 *)(addr))
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#define __raw_writeb(b,addr) ((*(volatile u8 *) (addr)) = (b))
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#define __raw_writew(w,addr) ((*(volatile u16 *) (addr)) = (w))
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#define __raw_writel(l,addr) ((*(volatile u32 *) (addr)) = (l))
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#define readb(addr) in_8((volatile u8 *)(addr))
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#define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
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#if !defined(__BIG_ENDIAN)
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#define readw(addr) (*(volatile u16 *) (addr))
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#define readl(addr) (*(volatile u32 *) (addr))
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#define writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
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#define writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
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#else
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#define readw(addr) in_be16((volatile u16 *)(addr))
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#define readl(addr) in_be32((volatile u32 *)(addr))
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#define writew(b,addr) out_be16((volatile u16 *)(addr),(b))
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#define writel(b,addr) out_be32((volatile u32 *)(addr),(b))
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#endif
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/*
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* The insw/outsw/insl/outsl macros don't do byte-swapping.
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* They are only used in practice for transferring buffers which
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* are arrays of bytes, and byte-swapping is not appropriate in
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* that case. - paulus
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*/
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#define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
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#define outsb(port, buf, ns) _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
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#define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
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#define outsw(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
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#define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
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#define outsl(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
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#define inb(port) in_8((u8 *)((port)+_IO_BASE))
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#define outb(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
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#if !defined(__BIG_ENDIAN)
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#define inw(port) in_be16((u16 *)((port)+_IO_BASE))
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#define outw(val, port) out_be16((u16 *)((port)+_IO_BASE), (val))
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#define inl(port) in_be32((u32 *)((port)+_IO_BASE))
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#define outl(val, port) out_be32((u32 *)((port)+_IO_BASE), (val))
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#else
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#define inw(port) in_le16((u16 *)((port)+_IO_BASE))
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#define outw(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
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#define inl(port) in_le32((u32 *)((port)+_IO_BASE))
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#define outl(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
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#endif
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#define mb() __asm__ __volatile__ ("" : : : "memory")
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static inline void _insb(volatile u8 * port, void *buf, int ns)
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{
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u8 *data = (u8 *) buf;
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while (ns--)
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*data++ = *port;
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}
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static inline void _outsb(volatile u8 * port, const void *buf, int ns)
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{
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u8 *data = (u8 *) buf;
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while (ns--)
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*port = *data++;
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}
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static inline void _insw(volatile u16 * port, void *buf, int ns)
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{
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u16 *data = (u16 *) buf;
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while (ns--)
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*data++ = __sw16(*port);
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}
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static inline void _outsw(volatile u16 * port, const void *buf, int ns)
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{
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u16 *data = (u16 *) buf;
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while (ns--) {
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*port = __sw16(*data);
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data++;
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}
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}
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static inline void _insl(volatile u32 * port, void *buf, int nl)
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{
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u32 *data = (u32 *) buf;
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while (nl--)
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*data++ = __sw32(*port);
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}
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static inline void _outsl(volatile u32 * port, const void *buf, int nl)
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{
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u32 *data = (u32 *) buf;
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while (nl--) {
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*port = __sw32(*data);
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data++;
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}
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}
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static inline void _insw_ns(volatile u16 * port, void *buf, int ns)
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{
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u16 *data = (u16 *) buf;
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while (ns--)
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*data++ = *port;
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}
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static inline void _outsw_ns(volatile u16 * port, const void *buf, int ns)
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{
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u16 *data = (u16 *) buf;
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while (ns--) {
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*port = *data++;
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}
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}
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static inline void _insl_ns(volatile u32 * port, void *buf, int nl)
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{
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u32 *data = (u32 *) buf;
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while (nl--)
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*data++ = *port;
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}
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static inline void _outsl_ns(volatile u32 * port, const void *buf, int nl)
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{
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u32 *data = (u32 *) buf;
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while (nl--) {
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*port = *data;
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data++;
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}
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}
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/*
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* The *_ns versions below don't do byte-swapping.
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* Neither do the standard versions now, these are just here
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* for older code.
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*/
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#define insw_ns(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
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#define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
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#define insl_ns(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
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#define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
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#define IO_SPACE_LIMIT ~0
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/*
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* 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
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*/
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static inline int in_8(volatile u8 * addr)
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{
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return (int)*addr;
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}
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static inline void out_8(volatile u8 * addr, int val)
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{
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*addr = (u8) val;
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}
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static inline int in_le16(volatile u16 * addr)
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{
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return __sw16(*addr);
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}
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static inline int in_be16(volatile u16 * addr)
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{
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return (*addr & 0xFFFF);
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}
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static inline void out_le16(volatile u16 * addr, int val)
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{
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*addr = __sw16(val);
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}
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static inline void out_be16(volatile u16 * addr, int val)
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{
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*addr = (u16) val;
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}
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static inline unsigned in_le32(volatile u32 * addr)
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{
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return __sw32(*addr);
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}
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static inline unsigned in_be32(volatile u32 * addr)
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{
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return (*addr);
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}
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static inline void out_le32(volatile unsigned *addr, int val)
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{
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*addr = __sw32(val);
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}
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static inline void out_be32(volatile unsigned *addr, int val)
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{
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*addr = val;
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}
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/* Clear and set bits in one shot. These macros can be used to clear and
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* set multiple bits in a register using a single call. These macros can
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* also be used to set a multiple-bit bit pattern using a mask, by
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* specifying the mask in the 'clear' parameter and the new bit pattern
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* in the 'set' parameter.
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*/
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#define clrbits(type, addr, clear) \
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out_##type((addr), in_##type(addr) & ~(clear))
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#define setbits(type, addr, set) \
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out_##type((addr), in_##type(addr) | (set))
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#define clrsetbits(type, addr, clear, set) \
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out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
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#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
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#define setbits_be32(addr, set) setbits(be32, addr, set)
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#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
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#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
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#define setbits_le32(addr, set) setbits(le32, addr, set)
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#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
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#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
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#define setbits_be16(addr, set) setbits(be16, addr, set)
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#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
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#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
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#define setbits_le16(addr, set) setbits(le16, addr, set)
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#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
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#define clrbits_8(addr, clear) clrbits(8, addr, clear)
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#define setbits_8(addr, set) setbits(8, addr, set)
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#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
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static inline void sync(void)
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{
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/* This sync function is for PowerPC or other architecture instruction
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* ColdFire does not have this instruction. Dummy function, added for
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* compatibility (CFI driver)
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*/
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}
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#include <asm-generic/io.h>
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#endif /* __ASM_M68K_IO_H__ */
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