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https://github.com/AsahiLinux/u-boot
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a47a12becf
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
318 lines
9.9 KiB
C
318 lines
9.9 KiB
C
/* originally from linux source.
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* removed the dependencies on CONFIG_ values
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* removed virt_to_phys stuff (and in fact everything surrounded by #if __KERNEL__)
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* Modified By Rob Taylor, Flying Pig Systems, 2000
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*/
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#ifndef _PPC_IO_H
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#define _PPC_IO_H
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#include <linux/config.h>
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#include <asm/byteorder.h>
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#ifdef CONFIG_ADDR_MAP
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#include <addr_map.h>
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#endif
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#define SIO_CONFIG_RA 0x398
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#define SIO_CONFIG_RD 0x399
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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 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_le16((volatile u16 *)(addr))
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#define readl(addr) in_le32((volatile u32 *)(addr))
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#define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
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#define writel(b,addr) out_le32((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 inb_p(port) in_8((u8 *)((port)+_IO_BASE))
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#define outb_p(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
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#define inw_p(port) in_le16((u16 *)((port)+_IO_BASE))
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#define outw_p(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
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#define inl_p(port) in_le32((u32 *)((port)+_IO_BASE))
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#define outl_p(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
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extern void _insb(volatile u8 *port, void *buf, int ns);
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extern void _outsb(volatile u8 *port, const void *buf, int ns);
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extern void _insw(volatile u16 *port, void *buf, int ns);
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extern void _outsw(volatile u16 *port, const void *buf, int ns);
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extern void _insl(volatile u32 *port, void *buf, int nl);
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extern void _outsl(volatile u32 *port, const void *buf, int nl);
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extern void _insw_ns(volatile u16 *port, void *buf, int ns);
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extern void _outsw_ns(volatile u16 *port, const void *buf, int ns);
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extern void _insl_ns(volatile u32 *port, void *buf, int nl);
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extern void _outsl_ns(volatile u32 *port, const void *buf, int nl);
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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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#define memset_io(a,b,c) memset((void *)(a),(b),(c))
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#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
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#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
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/*
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* Enforce In-order Execution of I/O:
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* Acts as a barrier to ensure all previous I/O accesses have
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* completed before any further ones are issued.
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*/
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static inline void eieio(void)
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{
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__asm__ __volatile__ ("eieio" : : : "memory");
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}
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static inline void sync(void)
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{
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__asm__ __volatile__ ("sync" : : : "memory");
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}
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static inline void isync(void)
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{
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__asm__ __volatile__ ("isync" : : : "memory");
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}
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/* Enforce in-order execution of data I/O.
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* No distinction between read/write on PPC; use eieio for all three.
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*/
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#define iobarrier_rw() eieio()
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#define iobarrier_r() eieio()
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#define iobarrier_w() eieio()
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/*
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* Non ordered and non-swapping "raw" accessors
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*/
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#define __iomem
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#define PCI_FIX_ADDR(addr) (addr)
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static inline unsigned char __raw_readb(const volatile void __iomem *addr)
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{
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return *(volatile unsigned char *)PCI_FIX_ADDR(addr);
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}
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static inline unsigned short __raw_readw(const volatile void __iomem *addr)
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{
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return *(volatile unsigned short *)PCI_FIX_ADDR(addr);
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}
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static inline unsigned int __raw_readl(const volatile void __iomem *addr)
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{
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return *(volatile unsigned int *)PCI_FIX_ADDR(addr);
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}
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static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
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{
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*(volatile unsigned char *)PCI_FIX_ADDR(addr) = v;
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}
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static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
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{
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*(volatile unsigned short *)PCI_FIX_ADDR(addr) = v;
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}
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static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
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{
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*(volatile unsigned int *)PCI_FIX_ADDR(addr) = v;
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}
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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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* Read operations have additional twi & isync to make sure the read
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* is actually performed (i.e. the data has come back) before we start
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* executing any following instructions.
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*/
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extern inline int in_8(const volatile unsigned char __iomem *addr)
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{
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int ret;
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__asm__ __volatile__(
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"sync; lbz%U1%X1 %0,%1;\n"
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"twi 0,%0,0;\n"
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"isync" : "=r" (ret) : "m" (*addr));
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return ret;
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}
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extern inline void out_8(volatile unsigned char __iomem *addr, int val)
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{
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__asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
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}
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extern inline int in_le16(const volatile unsigned short __iomem *addr)
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{
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int ret;
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__asm__ __volatile__("sync; lhbrx %0,0,%1;\n"
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"twi 0,%0,0;\n"
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"isync" : "=r" (ret) :
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"r" (addr), "m" (*addr));
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return ret;
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}
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extern inline int in_be16(const volatile unsigned short __iomem *addr)
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{
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int ret;
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__asm__ __volatile__("sync; lhz%U1%X1 %0,%1;\n"
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"twi 0,%0,0;\n"
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"isync" : "=r" (ret) : "m" (*addr));
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return ret;
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}
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extern inline void out_le16(volatile unsigned short __iomem *addr, int val)
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{
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__asm__ __volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr) :
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"r" (val), "r" (addr));
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}
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extern inline void out_be16(volatile unsigned short __iomem *addr, int val)
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{
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__asm__ __volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
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}
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extern inline unsigned in_le32(const volatile unsigned __iomem *addr)
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{
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unsigned ret;
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__asm__ __volatile__("sync; lwbrx %0,0,%1;\n"
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"twi 0,%0,0;\n"
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"isync" : "=r" (ret) :
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"r" (addr), "m" (*addr));
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return ret;
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}
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extern inline unsigned in_be32(const volatile unsigned __iomem *addr)
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{
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unsigned ret;
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__asm__ __volatile__("sync; lwz%U1%X1 %0,%1;\n"
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"twi 0,%0,0;\n"
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"isync" : "=r" (ret) : "m" (*addr));
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return ret;
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}
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extern inline void out_le32(volatile unsigned __iomem *addr, int val)
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{
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__asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr) :
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"r" (val), "r" (addr));
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}
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extern inline void out_be32(volatile unsigned __iomem *addr, int val)
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{
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__asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (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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/*
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* Given a physical address and a length, return a virtual address
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* that can be used to access the memory range with the caching
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* properties specified by "flags".
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*/
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#define MAP_NOCACHE (0)
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#define MAP_WRCOMBINE (0)
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#define MAP_WRBACK (0)
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#define MAP_WRTHROUGH (0)
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static inline void *
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map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
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{
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#ifdef CONFIG_ADDR_MAP
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return (void *)(addrmap_phys_to_virt(paddr));
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#else
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return (void *)((unsigned long)paddr);
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#endif
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}
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/*
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* Take down a mapping set up by map_physmem().
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*/
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static inline void unmap_physmem(void *vaddr, unsigned long flags)
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{
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}
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static inline phys_addr_t virt_to_phys(void * vaddr)
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{
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#ifdef CONFIG_ADDR_MAP
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return addrmap_virt_to_phys(vaddr);
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#else
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return (phys_addr_t)((unsigned long)vaddr);
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#endif
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}
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#endif
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