mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-21 02:33:07 +00:00
d5af15bf51
Clean up asm/io.h by - removing commented code - removing outdated comments - removing unused definitions (for mem_isa, mem_pci) This massively improves the readability of the file. Suggested by commits:7ab2e47d27("arm: Clean up asm/io.h")909d0399a5("ARM: asm/io.h: kill off confusing #ifdef __mem_pci block") Signed-off-by: Leo Yu-Chi Liang <ycliang@andestech.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
328 lines
8.7 KiB
C
328 lines
8.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2017 Andes Technology Corporation
|
|
* Rick Chen, Andes Technology Corporation <rick@andestech.com>
|
|
*
|
|
*/
|
|
#ifndef __ASM_RISCV_IO_H
|
|
#define __ASM_RISCV_IO_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/barrier.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
static inline void sync(void)
|
|
{
|
|
}
|
|
|
|
#define __arch_getb(a) (*(volatile unsigned char *)(a))
|
|
#define __arch_getw(a) (*(volatile unsigned short *)(a))
|
|
#define __arch_getl(a) (*(volatile unsigned int *)(a))
|
|
#define __arch_getq(a) (*(volatile unsigned long long *)(a))
|
|
|
|
#define __arch_putb(v, a) (*(volatile unsigned char *)(a) = (v))
|
|
#define __arch_putw(v, a) (*(volatile unsigned short *)(a) = (v))
|
|
#define __arch_putl(v, a) (*(volatile unsigned int *)(a) = (v))
|
|
#define __arch_putq(v, a) (*(volatile unsigned long long *)(a) = (v))
|
|
|
|
#define __raw_writeb(v, a) __arch_putb(v, a)
|
|
#define __raw_writew(v, a) __arch_putw(v, a)
|
|
#define __raw_writel(v, a) __arch_putl(v, a)
|
|
#define __raw_writeq(v, a) __arch_putq(v, a)
|
|
|
|
#define __raw_readb(a) __arch_getb(a)
|
|
#define __raw_readw(a) __arch_getw(a)
|
|
#define __raw_readl(a) __arch_getl(a)
|
|
#define __raw_readq(a) __arch_getq(a)
|
|
|
|
/* adding for cadence_qspi_apb.c */
|
|
#define memcpy_fromio(a, c, l) memcpy((a), (c), (l))
|
|
#define memcpy_toio(c, a, l) memcpy((c), (a), (l))
|
|
|
|
#define dmb() mb()
|
|
#define __iormb() rmb()
|
|
#define __iowmb() wmb()
|
|
|
|
static inline void writeb(u8 val, volatile void __iomem *addr)
|
|
{
|
|
__iowmb();
|
|
__arch_putb(val, addr);
|
|
}
|
|
|
|
static inline void writew(u16 val, volatile void __iomem *addr)
|
|
{
|
|
__iowmb();
|
|
__arch_putw(val, addr);
|
|
}
|
|
|
|
static inline void writel(u32 val, volatile void __iomem *addr)
|
|
{
|
|
__iowmb();
|
|
__arch_putl(val, addr);
|
|
}
|
|
|
|
static inline void writeq(u64 val, volatile void __iomem *addr)
|
|
{
|
|
__iowmb();
|
|
__arch_putq(val, addr);
|
|
}
|
|
|
|
static inline u8 readb(const volatile void __iomem *addr)
|
|
{
|
|
u8 val;
|
|
|
|
val = __arch_getb(addr);
|
|
__iormb();
|
|
return val;
|
|
}
|
|
|
|
static inline u16 readw(const volatile void __iomem *addr)
|
|
{
|
|
u16 val;
|
|
|
|
val = __arch_getw(addr);
|
|
__iormb();
|
|
return val;
|
|
}
|
|
|
|
static inline u32 readl(const volatile void __iomem *addr)
|
|
{
|
|
u32 val;
|
|
|
|
val = __arch_getl(addr);
|
|
__iormb();
|
|
return val;
|
|
}
|
|
|
|
static inline u64 readq(const volatile void __iomem *addr)
|
|
{
|
|
u64 val;
|
|
|
|
val = __arch_getq(addr);
|
|
__iormb();
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* The compiler seems to be incapable of optimising constants
|
|
* properly. Spell it out to the compiler in some cases.
|
|
* These are only valid for small values of "off" (< 1<<12)
|
|
*/
|
|
#define __raw_base_writeb(val, base, off) __arch_base_putb(val, base, off)
|
|
#define __raw_base_writew(val, base, off) __arch_base_putw(val, base, off)
|
|
#define __raw_base_writel(val, base, off) __arch_base_putl(val, base, off)
|
|
|
|
#define __raw_base_readb(base, off) __arch_base_getb(base, off)
|
|
#define __raw_base_readw(base, off) __arch_base_getw(base, off)
|
|
#define __raw_base_readl(base, off) __arch_base_getl(base, off)
|
|
|
|
#define out_arch(type, endian, a, v) __raw_write##type(cpu_to_##endian(v), a)
|
|
#define in_arch(type, endian, a) endian##_to_cpu(__raw_read##type(a))
|
|
|
|
#define out_le32(a, v) out_arch(l, le32, a, v)
|
|
#define out_le16(a, v) out_arch(w, le16, a, v)
|
|
|
|
#define in_le32(a) in_arch(l, le32, a)
|
|
#define in_le16(a) in_arch(w, le16, a)
|
|
|
|
#define out_be32(a, v) out_arch(l, be32, a, v)
|
|
#define out_be16(a, v) out_arch(w, be16, a, v)
|
|
|
|
#define in_be32(a) in_arch(l, be32, a)
|
|
#define in_be16(a) in_arch(w, be16, a)
|
|
|
|
#define out_8(a, v) __raw_writeb(v, a)
|
|
#define in_8(a) __raw_readb(a)
|
|
|
|
/*
|
|
* Clear and set bits in one shot. These macros can be used to clear and
|
|
* set multiple bits in a register using a single call. These macros can
|
|
* also be used to set a multiple-bit bit pattern using a mask, by
|
|
* specifying the mask in the 'clear' parameter and the new bit pattern
|
|
* in the 'set' parameter.
|
|
*/
|
|
|
|
#define clrbits(type, addr, clear) \
|
|
out_##type((addr), in_##type(addr) & ~(clear))
|
|
|
|
#define setbits(type, addr, set) \
|
|
out_##type((addr), in_##type(addr) | (set))
|
|
|
|
#define clrsetbits(type, addr, clear, set) \
|
|
out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
|
|
|
|
#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
|
|
#define setbits_be32(addr, set) setbits(be32, addr, set)
|
|
#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
|
|
|
|
#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
|
|
#define setbits_le32(addr, set) setbits(le32, addr, set)
|
|
#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
|
|
|
|
#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
|
|
#define setbits_be16(addr, set) setbits(be16, addr, set)
|
|
#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
|
|
|
|
#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
|
|
#define setbits_le16(addr, set) setbits(le16, addr, set)
|
|
#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
|
|
|
|
#define clrbits_8(addr, clear) clrbits(8, addr, clear)
|
|
#define setbits_8(addr, set) setbits(8, addr, set)
|
|
#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
|
|
|
|
/*
|
|
* Now, pick up the machine-defined IO definitions
|
|
* #include <asm/arch/io.h>
|
|
*/
|
|
|
|
/*
|
|
* IO port access primitives
|
|
* -------------------------
|
|
*
|
|
* The NDS32 doesn't have special IO access instructions just like ARM;
|
|
* all IO is memory mapped.
|
|
* Note that these are defined to perform little endian accesses
|
|
* only. Their primary purpose is to access PCI and ISA peripherals.
|
|
*
|
|
* Note that for a big endian machine, this implies that the following
|
|
* big endian mode connectivity is in place, as described by numerious
|
|
* ARM documents:
|
|
*
|
|
* PCI: D0-D7 D8-D15 D16-D23 D24-D31
|
|
* ARM: D24-D31 D16-D23 D8-D15 D0-D7
|
|
*
|
|
* The machine specific io.h include defines __io to translate an "IO"
|
|
* address to a memory address.
|
|
*
|
|
* Note that we prevent GCC re-ordering or caching values in expressions
|
|
* by introducing sequence points into the in*() definitions. Note that
|
|
* __raw_* do not guarantee this behaviour.
|
|
*
|
|
* The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space.
|
|
*/
|
|
#ifdef __io
|
|
#define outb(v, p) __raw_writeb(v, __io(p))
|
|
#define outw(v, p) __raw_writew(cpu_to_le16(v), __io(p))
|
|
#define outl(v, p) __raw_writel(cpu_to_le32(v), __io(p))
|
|
|
|
#define inb(p) ({ unsigned int __v = __raw_readb(__io(p)); __v; })
|
|
#define inw(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(__io(p))); __v; })
|
|
#define inl(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(__io(p))); __v; })
|
|
|
|
#define outsb(p, d, l) writesb(__io(p), d, l)
|
|
#define outsw(p, d, l) writesw(__io(p), d, l)
|
|
#define outsl(p, d, l) writesl(__io(p), d, l)
|
|
|
|
#define insb(p, d, l) readsb(__io(p), d, l)
|
|
#define insw(p, d, l) readsw(__io(p), d, l)
|
|
#define insl(p, d, l) readsl(__io(p), d, l)
|
|
|
|
static inline void readsb(unsigned int *addr, void *data, int bytelen)
|
|
{
|
|
unsigned char *ptr;
|
|
unsigned char *ptr2;
|
|
|
|
ptr = (unsigned char *)addr;
|
|
ptr2 = (unsigned char *)data;
|
|
|
|
while (bytelen) {
|
|
*ptr2 = *ptr;
|
|
ptr2++;
|
|
bytelen--;
|
|
}
|
|
}
|
|
|
|
static inline void readsw(unsigned int *addr, void *data, int wordlen)
|
|
{
|
|
unsigned short *ptr;
|
|
unsigned short *ptr2;
|
|
|
|
ptr = (unsigned short *)addr;
|
|
ptr2 = (unsigned short *)data;
|
|
|
|
while (wordlen) {
|
|
*ptr2 = *ptr;
|
|
ptr2++;
|
|
wordlen--;
|
|
}
|
|
}
|
|
|
|
static inline void readsl(unsigned int *addr, void *data, int longlen)
|
|
{
|
|
unsigned int *ptr;
|
|
unsigned int *ptr2;
|
|
|
|
ptr = (unsigned int *)addr;
|
|
ptr2 = (unsigned int *)data;
|
|
|
|
while (longlen) {
|
|
*ptr2 = *ptr;
|
|
ptr2++;
|
|
longlen--;
|
|
}
|
|
}
|
|
|
|
static inline void writesb(unsigned int *addr, const void *data, int bytelen)
|
|
{
|
|
unsigned char *ptr;
|
|
unsigned char *ptr2;
|
|
|
|
ptr = (unsigned char *)addr;
|
|
ptr2 = (unsigned char *)data;
|
|
|
|
while (bytelen) {
|
|
*ptr = *ptr2;
|
|
ptr2++;
|
|
bytelen--;
|
|
}
|
|
}
|
|
|
|
static inline void writesw(unsigned int *addr, const void *data, int wordlen)
|
|
{
|
|
unsigned short *ptr;
|
|
unsigned short *ptr2;
|
|
|
|
ptr = (unsigned short *)addr;
|
|
ptr2 = (unsigned short *)data;
|
|
|
|
while (wordlen) {
|
|
*ptr = *ptr2;
|
|
ptr2++;
|
|
wordlen--;
|
|
}
|
|
}
|
|
|
|
static inline void writesl(unsigned int *addr, const void *data, int longlen)
|
|
{
|
|
unsigned int *ptr;
|
|
unsigned int *ptr2;
|
|
|
|
ptr = (unsigned int *)addr;
|
|
ptr2 = (unsigned int *)data;
|
|
|
|
while (longlen) {
|
|
*ptr = *ptr2;
|
|
ptr2++;
|
|
longlen--;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#define outb_p(val, port) outb((val), (port))
|
|
#define outw_p(val, port) outw((val), (port))
|
|
#define outl_p(val, port) outl((val), (port))
|
|
#define inb_p(port) inb((port))
|
|
#define inw_p(port) inw((port))
|
|
#define inl_p(port) inl((port))
|
|
|
|
#define outsb_p(port, from, len) outsb(port, from, len)
|
|
#define outsw_p(port, from, len) outsw(port, from, len)
|
|
#define outsl_p(port, from, len) outsl(port, from, len)
|
|
#define insb_p(port, to, len) insb(port, to, len)
|
|
#define insw_p(port, to, len) insw(port, to, len)
|
|
#define insl_p(port, to, len) insl(port, to, len)
|
|
|
|
#include <asm-generic/io.h>
|
|
|
|
#endif /* __ASM_RISCV_IO_H */
|