| /* 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 */ |
