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/
usr
/
src
/
linux-headers-6.8.0-83-generic
/
arch
/
m68k
/
include
/
asm
/ [
drwxr-xr-x
]
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raw_io.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * linux/include/asm-m68k/raw_io.h * * 10/20/00 RZ: - created from bits of io.h and ide.h to cleanup namespace * */ #ifndef _RAW_IO_H #define _RAW_IO_H #ifdef __KERNEL__ #include <asm/byteorder.h> /* ++roman: The assignments to temp. vars avoid that gcc sometimes generates * two accesses to memory, which may be undesirable for some devices. */ #define in_8(addr) \ ({ u8 __v = (*(__force const volatile u8 *) (unsigned long)(addr)); __v; }) #define in_be16(addr) \ ({ u16 __v = (*(__force const volatile u16 *) (unsigned long)(addr)); __v; }) #define in_be32(addr) \ ({ u32 __v = (*(__force const volatile u32 *) (unsigned long)(addr)); __v; }) #define in_le16(addr) \ ({ u16 __v = le16_to_cpu(*(__force const volatile __le16 *) (unsigned long)(addr)); __v; }) #define in_le32(addr) \ ({ u32 __v = le32_to_cpu(*(__force const volatile __le32 *) (unsigned long)(addr)); __v; }) #define out_8(addr,b) (void)((*(__force volatile u8 *) (unsigned long)(addr)) = (b)) #define out_be16(addr,w) (void)((*(__force volatile u16 *) (unsigned long)(addr)) = (w)) #define out_be32(addr,l) (void)((*(__force volatile u32 *) (unsigned long)(addr)) = (l)) #define out_le16(addr,w) (void)((*(__force volatile __le16 *) (unsigned long)(addr)) = cpu_to_le16(w)) #define out_le32(addr,l) (void)((*(__force volatile __le32 *) (unsigned long)(addr)) = cpu_to_le32(l)) #define raw_inb in_8 #define raw_inw in_be16 #define raw_inl in_be32 #define __raw_readb in_8 #define __raw_readw in_be16 #define __raw_readl in_be32 #define raw_outb(val,port) out_8((port),(val)) #define raw_outw(val,port) out_be16((port),(val)) #define raw_outl(val,port) out_be32((port),(val)) #define __raw_writeb(val,addr) out_8((addr),(val)) #define __raw_writew(val,addr) out_be16((addr),(val)) #define __raw_writel(val,addr) out_be32((addr),(val)) /* * Atari ROM port (cartridge port) ISA adapter, used for the EtherNEC NE2000 * network card driver. * The ISA adapter connects address lines A9-A13 to ISA address lines A0-A4, * and hardwires the rest of the ISA addresses for a base address of 0x300. * * Data lines D8-D15 are connected to ISA data lines D0-D7 for reading. * For writes, address lines A1-A8 are latched to ISA data lines D0-D7 * (meaning the bit pattern on A1-A8 can be read back as byte). * * Read and write operations are distinguished by the base address used: * reads are from the ROM A side range, writes are through the B side range * addresses (A side base + 0x10000). * * Reads and writes are byte only. * * 16 bit reads and writes are necessary for the NetUSBee adapter's USB * chipset - 16 bit words are read straight off the ROM port while 16 bit * reads are split into two byte writes. The low byte is latched to the * NetUSBee buffer by a read from the _read_ window (with the data pattern * asserted as A1-A8 address pattern). The high byte is then written to the * write range as usual, completing the write cycle. */ #if defined(CONFIG_ATARI_ROM_ISA) #define rom_in_8(addr) \ ({ u16 __v = (*(__force const volatile u16 *) (addr)); __v >>= 8; __v; }) #define rom_in_be16(addr) \ ({ u16 __v = (*(__force const volatile u16 *) (addr)); __v; }) #define rom_in_le16(addr) \ ({ u16 __v = le16_to_cpu(*(__force const volatile u16 *) (addr)); __v; }) #define rom_out_8(addr, b) \ (void)({u8 __maybe_unused __w, __v = (b); u32 _addr = ((u32) (addr)); \ __w = ((*(__force volatile u8 *) ((_addr | 0x10000) + (__v<<1)))); }) #define rom_out_be16(addr, w) \ (void)({u16 __maybe_unused __w, __v = (w); u32 _addr = ((u32) (addr)); \ __w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v & 0xFF)<<1)))); \ __w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v >> 8)<<1)))); }) #define rom_out_le16(addr, w) \ (void)({u16 __maybe_unused __w, __v = (w); u32 _addr = ((u32) (addr)); \ __w = ((*(__force volatile u16 *) ((_addr & 0xFFFF0000UL) + ((__v >> 8)<<1)))); \ __w = ((*(__force volatile u16 *) ((_addr | 0x10000) + ((__v & 0xFF)<<1)))); }) #define raw_rom_inb rom_in_8 #define raw_rom_inw rom_in_be16 #define raw_rom_outb(val, port) rom_out_8((port), (val)) #define raw_rom_outw(val, port) rom_out_be16((port), (val)) #endif /* CONFIG_ATARI_ROM_ISA */ static inline void raw_insb(const volatile u8 __iomem *port, u8 *buf, unsigned int len) { unsigned int i; for (i = 0; i < len; i++) *buf++ = in_8(port); } static inline void raw_outsb(volatile u8 __iomem *port, const u8 *buf, unsigned int nr) { unsigned int tmp; if (nr & 15) { tmp = (nr & 15) - 1; asm volatile ( "1: moveb %0@+,%2@; dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } if (nr >> 4) { tmp = (nr >> 4) - 1; asm volatile ( "1: " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "moveb %0@+,%2@; " "dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } } static inline void raw_insw(volatile const u16 __iomem *port, u16 *buf, unsigned int nr) { unsigned int tmp; if (nr & 15) { tmp = (nr & 15) - 1; asm volatile ( "1: movew %2@,%0@+; dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } if (nr >> 4) { tmp = (nr >> 4) - 1; asm volatile ( "1: " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "movew %2@,%0@+; " "dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } } static inline void raw_outsw(volatile u16 __iomem *port, const u16 *buf, unsigned int nr) { unsigned int tmp; if (nr & 15) { tmp = (nr & 15) - 1; asm volatile ( "1: movew %0@+,%2@; dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } if (nr >> 4) { tmp = (nr >> 4) - 1; asm volatile ( "1: " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "movew %0@+,%2@; " "dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } } static inline void raw_insl(const volatile u32 __iomem *port, u32 *buf, unsigned int nr) { unsigned int tmp; if (nr & 15) { tmp = (nr & 15) - 1; asm volatile ( "1: movel %2@,%0@+; dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } if (nr >> 4) { tmp = (nr >> 4) - 1; asm volatile ( "1: " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "movel %2@,%0@+; " "dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } } static inline void raw_outsl(volatile u32 __iomem *port, const u32 *buf, unsigned int nr) { unsigned int tmp; if (nr & 15) { tmp = (nr & 15) - 1; asm volatile ( "1: movel %0@+,%2@; dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } if (nr >> 4) { tmp = (nr >> 4) - 1; asm volatile ( "1: " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "movel %0@+,%2@; " "dbra %1,1b" : "=a" (buf), "=d" (tmp) : "a" (port), "0" (buf), "1" (tmp)); } } static inline void raw_insw_swapw(const volatile u16 __iomem *port, u16 *buf, unsigned int nr) { if ((nr) % 8) __asm__ __volatile__ ("\tmovel %0,%/a0\n\t" "movel %1,%/a1\n\t" "movel %2,%/d6\n\t" "subql #1,%/d6\n" "1:\tmovew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "dbra %/d6,1b" : : "g" (port), "g" (buf), "g" (nr) : "d0", "a0", "a1", "d6"); else __asm__ __volatile__ ("movel %0,%/a0\n\t" "movel %1,%/a1\n\t" "movel %2,%/d6\n\t" "lsrl #3,%/d6\n\t" "subql #1,%/d6\n" "1:\tmovew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "movew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "movew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "movew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "movew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "movew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "movew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "movew %/a0@,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a1@+\n\t" "dbra %/d6,1b" : : "g" (port), "g" (buf), "g" (nr) : "d0", "a0", "a1", "d6"); } static inline void raw_outsw_swapw(volatile u16 __iomem *port, const u16 *buf, unsigned int nr) { if ((nr) % 8) __asm__ __volatile__ ("movel %0,%/a0\n\t" "movel %1,%/a1\n\t" "movel %2,%/d6\n\t" "subql #1,%/d6\n" "1:\tmovew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "dbra %/d6,1b" : : "g" (port), "g" (buf), "g" (nr) : "d0", "a0", "a1", "d6"); else __asm__ __volatile__ ("movel %0,%/a0\n\t" "movel %1,%/a1\n\t" "movel %2,%/d6\n\t" "lsrl #3,%/d6\n\t" "subql #1,%/d6\n" "1:\tmovew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "movew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "movew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "movew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "movew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "movew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "movew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "movew %/a1@+,%/d0\n\t" "rolw #8,%/d0\n\t" "movew %/d0,%/a0@\n\t" "dbra %/d6,1b" : : "g" (port), "g" (buf), "g" (nr) : "d0", "a0", "a1", "d6"); } #if defined(CONFIG_ATARI_ROM_ISA) static inline void raw_rom_insb(const volatile u8 __iomem *port, u8 *buf, unsigned int len) { unsigned int i; for (i = 0; i < len; i++) *buf++ = rom_in_8(port); } static inline void raw_rom_outsb(volatile u8 __iomem *port, const u8 *buf, unsigned int len) { unsigned int i; for (i = 0; i < len; i++) rom_out_8(port, *buf++); } static inline void raw_rom_insw(const volatile u16 __iomem *port, u16 *buf, unsigned int nr) { unsigned int i; for (i = 0; i < nr; i++) *buf++ = rom_in_be16(port); } static inline void raw_rom_outsw(volatile u16 __iomem *port, const u16 *buf, unsigned int nr) { unsigned int i; for (i = 0; i < nr; i++) rom_out_be16(port, *buf++); } static inline void raw_rom_insw_swapw(const volatile u16 __iomem *port, u16 *buf, unsigned int nr) { unsigned int i; for (i = 0; i < nr; i++) *buf++ = rom_in_le16(port); } static inline void raw_rom_outsw_swapw(volatile u16 __iomem *port, const u16 *buf, unsigned int nr) { unsigned int i; for (i = 0; i < nr; i++) rom_out_le16(port, *buf++); } #endif /* CONFIG_ATARI_ROM_ISA */ #endif /* __KERNEL__ */ #endif /* _RAW_IO_H */
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