diff options
Diffstat (limited to 'include/asm-generic/io.h')
| -rw-r--r-- | include/asm-generic/io.h | 239 |
1 files changed, 149 insertions, 90 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 4c44a29b5e8e..ca5a1ce6f0f8 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -9,6 +9,7 @@ #include <asm/page.h> /* I/O is all done through memory accesses */ #include <linux/string.h> /* for memset() and memcpy() */ +#include <linux/sizes.h> #include <linux/types.h> #include <linux/instruction_pointer.h> @@ -74,6 +75,7 @@ #if IS_ENABLED(CONFIG_TRACE_MMIO_ACCESS) && !(defined(__DISABLE_TRACE_MMIO__)) #include <linux/tracepoint-defs.h> +#define rwmmio_tracepoint_enabled(tracepoint) tracepoint_enabled(tracepoint) DECLARE_TRACEPOINT(rwmmio_write); DECLARE_TRACEPOINT(rwmmio_post_write); DECLARE_TRACEPOINT(rwmmio_read); @@ -90,6 +92,7 @@ void log_post_read_mmio(u64 val, u8 width, const volatile void __iomem *addr, #else +#define rwmmio_tracepoint_enabled(tracepoint) false static inline void log_write_mmio(u64 val, u8 width, volatile void __iomem *addr, unsigned long caller_addr, unsigned long caller_addr0) {} static inline void log_post_write_mmio(u64 val, u8 width, volatile void __iomem *addr, @@ -188,11 +191,13 @@ static inline u8 readb(const volatile void __iomem *addr) { u8 val; - log_read_mmio(8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(8, addr, _THIS_IP_, _RET_IP_); __io_br(); val = __raw_readb(addr); __io_ar(val); - log_post_read_mmio(val, 8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 8, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -203,11 +208,13 @@ static inline u16 readw(const volatile void __iomem *addr) { u16 val; - log_read_mmio(16, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(16, addr, _THIS_IP_, _RET_IP_); __io_br(); val = __le16_to_cpu((__le16 __force)__raw_readw(addr)); __io_ar(val); - log_post_read_mmio(val, 16, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 16, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -218,11 +225,13 @@ static inline u32 readl(const volatile void __iomem *addr) { u32 val; - log_read_mmio(32, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(32, addr, _THIS_IP_, _RET_IP_); __io_br(); val = __le32_to_cpu((__le32 __force)__raw_readl(addr)); __io_ar(val); - log_post_read_mmio(val, 32, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 32, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -234,11 +243,13 @@ static inline u64 readq(const volatile void __iomem *addr) { u64 val; - log_read_mmio(64, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(64, addr, _THIS_IP_, _RET_IP_); __io_br(); - val = __le64_to_cpu(__raw_readq(addr)); + val = __le64_to_cpu((__le64 __force)__raw_readq(addr)); __io_ar(val); - log_post_read_mmio(val, 64, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 64, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -248,11 +259,13 @@ static inline u64 readq(const volatile void __iomem *addr) #define writeb writeb static inline void writeb(u8 value, volatile void __iomem *addr) { - log_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); __io_bw(); __raw_writeb(value, addr); __io_aw(); - log_post_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); } #endif @@ -260,11 +273,13 @@ static inline void writeb(u8 value, volatile void __iomem *addr) #define writew writew static inline void writew(u16 value, volatile void __iomem *addr) { - log_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); __io_bw(); __raw_writew((u16 __force)cpu_to_le16(value), addr); __io_aw(); - log_post_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); } #endif @@ -272,11 +287,13 @@ static inline void writew(u16 value, volatile void __iomem *addr) #define writel writel static inline void writel(u32 value, volatile void __iomem *addr) { - log_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); __io_bw(); __raw_writel((u32 __force)__cpu_to_le32(value), addr); __io_aw(); - log_post_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); } #endif @@ -285,11 +302,13 @@ static inline void writel(u32 value, volatile void __iomem *addr) #define writeq writeq static inline void writeq(u64 value, volatile void __iomem *addr) { - log_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); __io_bw(); - __raw_writeq(__cpu_to_le64(value), addr); + __raw_writeq((u64 __force)__cpu_to_le64(value), addr); __io_aw(); - log_post_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); } #endif #endif /* CONFIG_64BIT */ @@ -305,9 +324,11 @@ static inline u8 readb_relaxed(const volatile void __iomem *addr) { u8 val; - log_read_mmio(8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(8, addr, _THIS_IP_, _RET_IP_); val = __raw_readb(addr); - log_post_read_mmio(val, 8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 8, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -318,9 +339,11 @@ static inline u16 readw_relaxed(const volatile void __iomem *addr) { u16 val; - log_read_mmio(16, addr, _THIS_IP_, _RET_IP_); - val = __le16_to_cpu(__raw_readw(addr)); - log_post_read_mmio(val, 16, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(16, addr, _THIS_IP_, _RET_IP_); + val = __le16_to_cpu((__le16 __force)__raw_readw(addr)); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 16, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -331,9 +354,11 @@ static inline u32 readl_relaxed(const volatile void __iomem *addr) { u32 val; - log_read_mmio(32, addr, _THIS_IP_, _RET_IP_); - val = __le32_to_cpu(__raw_readl(addr)); - log_post_read_mmio(val, 32, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(32, addr, _THIS_IP_, _RET_IP_); + val = __le32_to_cpu((__le32 __force)__raw_readl(addr)); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 32, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -344,9 +369,11 @@ static inline u64 readq_relaxed(const volatile void __iomem *addr) { u64 val; - log_read_mmio(64, addr, _THIS_IP_, _RET_IP_); - val = __le64_to_cpu(__raw_readq(addr)); - log_post_read_mmio(val, 64, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_read)) + log_read_mmio(64, addr, _THIS_IP_, _RET_IP_); + val = __le64_to_cpu((__le64 __force)__raw_readq(addr)); + if (rwmmio_tracepoint_enabled(rwmmio_post_read)) + log_post_read_mmio(val, 64, addr, _THIS_IP_, _RET_IP_); return val; } #endif @@ -355,9 +382,11 @@ static inline u64 readq_relaxed(const volatile void __iomem *addr) #define writeb_relaxed writeb_relaxed static inline void writeb_relaxed(u8 value, volatile void __iomem *addr) { - log_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); __raw_writeb(value, addr); - log_post_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 8, addr, _THIS_IP_, _RET_IP_); } #endif @@ -365,9 +394,11 @@ static inline void writeb_relaxed(u8 value, volatile void __iomem *addr) #define writew_relaxed writew_relaxed static inline void writew_relaxed(u16 value, volatile void __iomem *addr) { - log_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); - __raw_writew(cpu_to_le16(value), addr); - log_post_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); + __raw_writew((u16 __force)cpu_to_le16(value), addr); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 16, addr, _THIS_IP_, _RET_IP_); } #endif @@ -375,9 +406,11 @@ static inline void writew_relaxed(u16 value, volatile void __iomem *addr) #define writel_relaxed writel_relaxed static inline void writel_relaxed(u32 value, volatile void __iomem *addr) { - log_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); - __raw_writel(__cpu_to_le32(value), addr); - log_post_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); + __raw_writel((u32 __force)__cpu_to_le32(value), addr); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 32, addr, _THIS_IP_, _RET_IP_); } #endif @@ -385,9 +418,11 @@ static inline void writel_relaxed(u32 value, volatile void __iomem *addr) #define writeq_relaxed writeq_relaxed static inline void writeq_relaxed(u64 value, volatile void __iomem *addr) { - log_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); - __raw_writeq(__cpu_to_le64(value), addr); - log_post_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); + if (rwmmio_tracepoint_enabled(rwmmio_write)) + log_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); + __raw_writeq((u64 __force)__cpu_to_le64(value), addr); + if (rwmmio_tracepoint_enabled(rwmmio_post_write)) + log_post_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); } #endif @@ -539,6 +574,7 @@ static inline void writesq(volatile void __iomem *addr, const void *buffer, #if !defined(inb) && !defined(_inb) #define _inb _inb +#ifdef CONFIG_HAS_IOPORT static inline u8 _inb(unsigned long addr) { u8 val; @@ -548,10 +584,15 @@ static inline u8 _inb(unsigned long addr) __io_par(val); return val; } +#else +u8 _inb(unsigned long addr) + __compiletime_error("inb()) requires CONFIG_HAS_IOPORT"); +#endif #endif #if !defined(inw) && !defined(_inw) #define _inw _inw +#ifdef CONFIG_HAS_IOPORT static inline u16 _inw(unsigned long addr) { u16 val; @@ -561,10 +602,15 @@ static inline u16 _inw(unsigned long addr) __io_par(val); return val; } +#else +u16 _inw(unsigned long addr) + __compiletime_error("inw() requires CONFIG_HAS_IOPORT"); +#endif #endif #if !defined(inl) && !defined(_inl) #define _inl _inl +#ifdef CONFIG_HAS_IOPORT static inline u32 _inl(unsigned long addr) { u32 val; @@ -574,36 +620,55 @@ static inline u32 _inl(unsigned long addr) __io_par(val); return val; } +#else +u32 _inl(unsigned long addr) + __compiletime_error("inl() requires CONFIG_HAS_IOPORT"); +#endif #endif #if !defined(outb) && !defined(_outb) #define _outb _outb +#ifdef CONFIG_HAS_IOPORT static inline void _outb(u8 value, unsigned long addr) { __io_pbw(); __raw_writeb(value, PCI_IOBASE + addr); __io_paw(); } +#else +void _outb(u8 value, unsigned long addr) + __compiletime_error("outb() requires CONFIG_HAS_IOPORT"); +#endif #endif #if !defined(outw) && !defined(_outw) #define _outw _outw +#ifdef CONFIG_HAS_IOPORT static inline void _outw(u16 value, unsigned long addr) { __io_pbw(); __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); __io_paw(); } +#else +void _outw(u16 value, unsigned long addr) + __compiletime_error("outw() requires CONFIG_HAS_IOPORT"); +#endif #endif #if !defined(outl) && !defined(_outl) #define _outl _outl +#ifdef CONFIG_HAS_IOPORT static inline void _outl(u32 value, unsigned long addr) { __io_pbw(); __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); __io_paw(); } +#else +void _outl(u32 value, unsigned long addr) + __compiletime_error("outl() requires CONFIG_HAS_IOPORT"); +#endif #endif #include <linux/logic_pio.h> @@ -687,53 +752,83 @@ static inline void outl_p(u32 value, unsigned long addr) #ifndef insb #define insb insb +#ifdef CONFIG_HAS_IOPORT static inline void insb(unsigned long addr, void *buffer, unsigned int count) { readsb(PCI_IOBASE + addr, buffer, count); } +#else +void insb(unsigned long addr, void *buffer, unsigned int count) + __compiletime_error("insb() requires HAS_IOPORT"); +#endif #endif #ifndef insw #define insw insw +#ifdef CONFIG_HAS_IOPORT static inline void insw(unsigned long addr, void *buffer, unsigned int count) { readsw(PCI_IOBASE + addr, buffer, count); } +#else +void insw(unsigned long addr, void *buffer, unsigned int count) + __compiletime_error("insw() requires HAS_IOPORT"); +#endif #endif #ifndef insl #define insl insl +#ifdef CONFIG_HAS_IOPORT static inline void insl(unsigned long addr, void *buffer, unsigned int count) { readsl(PCI_IOBASE + addr, buffer, count); } +#else +void insl(unsigned long addr, void *buffer, unsigned int count) + __compiletime_error("insl() requires HAS_IOPORT"); +#endif #endif #ifndef outsb #define outsb outsb +#ifdef CONFIG_HAS_IOPORT static inline void outsb(unsigned long addr, const void *buffer, unsigned int count) { writesb(PCI_IOBASE + addr, buffer, count); } +#else +void outsb(unsigned long addr, const void *buffer, unsigned int count) + __compiletime_error("outsb() requires HAS_IOPORT"); +#endif #endif #ifndef outsw #define outsw outsw +#ifdef CONFIG_HAS_IOPORT static inline void outsw(unsigned long addr, const void *buffer, unsigned int count) { writesw(PCI_IOBASE + addr, buffer, count); } +#else +void outsw(unsigned long addr, const void *buffer, unsigned int count) + __compiletime_error("outsw() requires HAS_IOPORT"); +#endif #endif #ifndef outsl #define outsl outsl +#ifdef CONFIG_HAS_IOPORT static inline void outsl(unsigned long addr, const void *buffer, unsigned int count) { writesl(PCI_IOBASE + addr, buffer, count); } +#else +void outsl(unsigned long addr, const void *buffer, unsigned int count) + __compiletime_error("outsl() requires HAS_IOPORT"); +#endif #endif #ifndef insb_p @@ -991,7 +1086,6 @@ static inline void iowrite64_rep(volatile void __iomem *addr, #ifdef __KERNEL__ -#include <linux/vmalloc.h> #define __io_virt(x) ((void __force *)(x)) /* @@ -1047,41 +1141,22 @@ static inline void iounmap(volatile void __iomem *addr) #elif defined(CONFIG_GENERIC_IOREMAP) #include <linux/pgtable.h> -/* - * Arch code can implement the following two hooks when using GENERIC_IOREMAP - * ioremap_allowed() return a bool, - * - true means continue to remap - * - false means skip remap and return directly - * iounmap_allowed() return a bool, - * - true means continue to vunmap - * - false means skip vunmap and return directly - */ -#ifndef ioremap_allowed -#define ioremap_allowed ioremap_allowed -static inline bool ioremap_allowed(phys_addr_t phys_addr, size_t size, - unsigned long prot) -{ - return true; -} -#endif - -#ifndef iounmap_allowed -#define iounmap_allowed iounmap_allowed -static inline bool iounmap_allowed(void *addr) -{ - return true; -} -#endif +void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size, + pgprot_t prot); void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, - unsigned long prot); + pgprot_t prot); void iounmap(volatile void __iomem *addr); +void generic_iounmap(volatile void __iomem *addr); +#ifndef ioremap +#define ioremap ioremap static inline void __iomem *ioremap(phys_addr_t addr, size_t size) { /* _PAGE_IOREMAP needs to be supplied by the architecture */ - return ioremap_prot(addr, size, _PAGE_IOREMAP); + return ioremap_prot(addr, size, __pgprot(_PAGE_IOREMAP)); } +#endif #endif /* !CONFIG_MMU || CONFIG_GENERIC_IOREMAP */ #ifndef ioremap_wc @@ -1170,55 +1245,39 @@ static inline void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr) #endif #ifndef memset_io -#define memset_io memset_io /** - * memset_io Set a range of I/O memory to a constant value + * memset_io - Set a range of I/O memory to a constant value * @addr: The beginning of the I/O-memory range to set * @val: The value to set the memory to * @count: The number of bytes to set * * Set a range of I/O memory to a given value. */ -static inline void memset_io(volatile void __iomem *addr, int value, - size_t size) -{ - memset(__io_virt(addr), value, size); -} +void memset_io(volatile void __iomem *addr, int val, size_t count); #endif #ifndef memcpy_fromio -#define memcpy_fromio memcpy_fromio /** - * memcpy_fromio Copy a block of data from I/O memory + * memcpy_fromio - Copy a block of data from I/O memory * @dst: The (RAM) destination for the copy * @src: The (I/O memory) source for the data * @count: The number of bytes to copy * * Copy a block of data from I/O memory. */ -static inline void memcpy_fromio(void *buffer, - const volatile void __iomem *addr, - size_t size) -{ - memcpy(buffer, __io_virt(addr), size); -} +void memcpy_fromio(void *dst, const volatile void __iomem *src, size_t count); #endif #ifndef memcpy_toio -#define memcpy_toio memcpy_toio /** - * memcpy_toio Copy a block of data into I/O memory + * memcpy_toio - Copy a block of data into I/O memory * @dst: The (I/O memory) destination for the copy * @src: The (RAM) source for the data * @count: The number of bytes to copy * * Copy a block of data to I/O memory. */ -static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer, - size_t size) -{ - memcpy(__io_virt(addr), buffer, size); -} +void memcpy_toio(volatile void __iomem *dst, const void *src, size_t count); #endif extern int devmem_is_allowed(unsigned long pfn); |