21264136ce
While we've been sorting out the toolchain fiasco, some of the code has suffered a bit of bitrot. Building with GCC4 also brings up some more build warnings. Trivial fixes for both issues. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
258 lines
7.3 KiB
C
258 lines
7.3 KiB
C
#ifndef __ASM_SH64_IO_H
|
|
#define __ASM_SH64_IO_H
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* include/asm-sh64/io.h
|
|
*
|
|
* Copyright (C) 2000, 2001 Paolo Alberelli
|
|
* Copyright (C) 2003 Paul Mundt
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Convention:
|
|
* read{b,w,l}/write{b,w,l} are for PCI,
|
|
* while in{b,w,l}/out{b,w,l} are for ISA
|
|
* These may (will) be platform specific function.
|
|
*
|
|
* In addition, we have
|
|
* ctrl_in{b,w,l}/ctrl_out{b,w,l} for SuperH specific I/O.
|
|
* which are processor specific. Address should be the result of
|
|
* onchip_remap();
|
|
*/
|
|
|
|
#include <linux/compiler.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/system.h>
|
|
#include <asm/page.h>
|
|
#include <asm-generic/iomap.h>
|
|
|
|
#define virt_to_bus virt_to_phys
|
|
#define bus_to_virt phys_to_virt
|
|
#define page_to_bus page_to_phys
|
|
|
|
/*
|
|
* Nothing overly special here.. instead of doing the same thing
|
|
* over and over again, we just define a set of sh64_in/out functions
|
|
* with an implicit size. The traditional read{b,w,l}/write{b,w,l}
|
|
* mess is wrapped to this, as are the SH-specific ctrl_in/out routines.
|
|
*/
|
|
static inline unsigned char sh64_in8(const volatile void __iomem *addr)
|
|
{
|
|
return *(volatile unsigned char __force *)addr;
|
|
}
|
|
|
|
static inline unsigned short sh64_in16(const volatile void __iomem *addr)
|
|
{
|
|
return *(volatile unsigned short __force *)addr;
|
|
}
|
|
|
|
static inline unsigned int sh64_in32(const volatile void __iomem *addr)
|
|
{
|
|
return *(volatile unsigned int __force *)addr;
|
|
}
|
|
|
|
static inline unsigned long long sh64_in64(const volatile void __iomem *addr)
|
|
{
|
|
return *(volatile unsigned long long __force *)addr;
|
|
}
|
|
|
|
static inline void sh64_out8(unsigned char b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned char __force *)addr = b;
|
|
wmb();
|
|
}
|
|
|
|
static inline void sh64_out16(unsigned short b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned short __force *)addr = b;
|
|
wmb();
|
|
}
|
|
|
|
static inline void sh64_out32(unsigned int b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned int __force *)addr = b;
|
|
wmb();
|
|
}
|
|
|
|
static inline void sh64_out64(unsigned long long b, volatile void __iomem *addr)
|
|
{
|
|
*(volatile unsigned long long __force *)addr = b;
|
|
wmb();
|
|
}
|
|
|
|
#define readb(addr) sh64_in8(addr)
|
|
#define readw(addr) sh64_in16(addr)
|
|
#define readl(addr) sh64_in32(addr)
|
|
#define readb_relaxed(addr) sh64_in8(addr)
|
|
#define readw_relaxed(addr) sh64_in16(addr)
|
|
#define readl_relaxed(addr) sh64_in32(addr)
|
|
|
|
#define writeb(b, addr) sh64_out8(b, addr)
|
|
#define writew(b, addr) sh64_out16(b, addr)
|
|
#define writel(b, addr) sh64_out32(b, addr)
|
|
|
|
#define ctrl_inb(addr) sh64_in8(ioport_map(addr, 1))
|
|
#define ctrl_inw(addr) sh64_in16(ioport_map(addr, 2))
|
|
#define ctrl_inl(addr) sh64_in32(ioport_map(addr, 4))
|
|
|
|
#define ctrl_outb(b, addr) sh64_out8(b, ioport_map(addr, 1))
|
|
#define ctrl_outw(b, addr) sh64_out16(b, ioport_map(addr, 2))
|
|
#define ctrl_outl(b, addr) sh64_out32(b, ioport_map(addr, 4))
|
|
|
|
#define ioread8(addr) sh64_in8(addr)
|
|
#define ioread16(addr) sh64_in16(addr)
|
|
#define ioread32(addr) sh64_in32(addr)
|
|
#define iowrite8(b, addr) sh64_out8(b, addr)
|
|
#define iowrite16(b, addr) sh64_out16(b, addr)
|
|
#define iowrite32(b, addr) sh64_out32(b, addr)
|
|
|
|
#define inb(addr) ctrl_inb(addr)
|
|
#define inw(addr) ctrl_inw(addr)
|
|
#define inl(addr) ctrl_inl(addr)
|
|
#define outb(b, addr) ctrl_outb(b, addr)
|
|
#define outw(b, addr) ctrl_outw(b, addr)
|
|
#define outl(b, addr) ctrl_outl(b, addr)
|
|
|
|
void outsw(unsigned long port, const void *addr, unsigned long count);
|
|
void insw(unsigned long port, void *addr, unsigned long count);
|
|
void outsl(unsigned long port, const void *addr, unsigned long count);
|
|
void insl(unsigned long port, void *addr, unsigned long count);
|
|
|
|
#define __raw_readb readb
|
|
#define __raw_readw readw
|
|
#define __raw_readl readl
|
|
#define __raw_writeb writeb
|
|
#define __raw_writew writew
|
|
#define __raw_writel writel
|
|
|
|
void memcpy_toio(void __iomem *to, const void *from, long count);
|
|
void memcpy_fromio(void *to, void __iomem *from, long count);
|
|
|
|
#define mmiowb()
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#ifdef CONFIG_SH_CAYMAN
|
|
extern unsigned long smsc_superio_virt;
|
|
#endif
|
|
#ifdef CONFIG_PCI
|
|
extern unsigned long pciio_virt;
|
|
#endif
|
|
|
|
#define IO_SPACE_LIMIT 0xffffffff
|
|
|
|
/*
|
|
* Change virtual addresses to physical addresses and vv.
|
|
* These are trivial on the 1:1 Linux/SuperH mapping
|
|
*/
|
|
static inline unsigned long virt_to_phys(volatile void * address)
|
|
{
|
|
return __pa(address);
|
|
}
|
|
|
|
static inline void * phys_to_virt(unsigned long address)
|
|
{
|
|
return __va(address);
|
|
}
|
|
|
|
extern void * __ioremap(unsigned long phys_addr, unsigned long size,
|
|
unsigned long flags);
|
|
|
|
static inline void * ioremap(unsigned long phys_addr, unsigned long size)
|
|
{
|
|
return __ioremap(phys_addr, size, 1);
|
|
}
|
|
|
|
static inline void * ioremap_nocache (unsigned long phys_addr, unsigned long size)
|
|
{
|
|
return __ioremap(phys_addr, size, 0);
|
|
}
|
|
|
|
extern void iounmap(void *addr);
|
|
|
|
unsigned long onchip_remap(unsigned long addr, unsigned long size, const char* name);
|
|
extern void onchip_unmap(unsigned long vaddr);
|
|
|
|
static __inline__ int check_signature(volatile void __iomem *io_addr,
|
|
const unsigned char *signature, int length)
|
|
{
|
|
int retval = 0;
|
|
do {
|
|
if (readb(io_addr) != *signature)
|
|
goto out;
|
|
io_addr++;
|
|
signature++;
|
|
length--;
|
|
} while (length);
|
|
retval = 1;
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* The caches on some architectures aren't dma-coherent and have need to
|
|
* handle this in software. There are three types of operations that
|
|
* can be applied to dma buffers.
|
|
*
|
|
* - dma_cache_wback_inv(start, size) makes caches and RAM coherent by
|
|
* writing the content of the caches back to memory, if necessary.
|
|
* The function also invalidates the affected part of the caches as
|
|
* necessary before DMA transfers from outside to memory.
|
|
* - dma_cache_inv(start, size) invalidates the affected parts of the
|
|
* caches. Dirty lines of the caches may be written back or simply
|
|
* be discarded. This operation is necessary before dma operations
|
|
* to the memory.
|
|
* - dma_cache_wback(start, size) writes back any dirty lines but does
|
|
* not invalidate the cache. This can be used before DMA reads from
|
|
* memory,
|
|
*/
|
|
|
|
static __inline__ void dma_cache_wback_inv (unsigned long start, unsigned long size)
|
|
{
|
|
unsigned long s = start & L1_CACHE_ALIGN_MASK;
|
|
unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
|
|
|
|
for (; s <= e; s += L1_CACHE_BYTES)
|
|
asm volatile ("ocbp %0, 0" : : "r" (s));
|
|
}
|
|
|
|
static __inline__ void dma_cache_inv (unsigned long start, unsigned long size)
|
|
{
|
|
// Note that caller has to be careful with overzealous
|
|
// invalidation should there be partial cache lines at the extremities
|
|
// of the specified range
|
|
unsigned long s = start & L1_CACHE_ALIGN_MASK;
|
|
unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
|
|
|
|
for (; s <= e; s += L1_CACHE_BYTES)
|
|
asm volatile ("ocbi %0, 0" : : "r" (s));
|
|
}
|
|
|
|
static __inline__ void dma_cache_wback (unsigned long start, unsigned long size)
|
|
{
|
|
unsigned long s = start & L1_CACHE_ALIGN_MASK;
|
|
unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
|
|
|
|
for (; s <= e; s += L1_CACHE_BYTES)
|
|
asm volatile ("ocbwb %0, 0" : : "r" (s));
|
|
}
|
|
|
|
/*
|
|
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
|
|
* access
|
|
*/
|
|
#define xlate_dev_mem_ptr(p) __va(p)
|
|
|
|
/*
|
|
* Convert a virtual cached pointer to an uncached pointer
|
|
*/
|
|
#define xlate_dev_kmem_ptr(p) p
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASM_SH64_IO_H */
|