diff options
| -rw-r--r-- | arch/sh/kernel/io.c | 67 | ||||
| -rw-r--r-- | include/asm-sh/io.h | 6 |
2 files changed, 73 insertions, 0 deletions
diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c index 71c9fde2fd9..501fe03e371 100644 --- a/arch/sh/kernel/io.c +++ b/arch/sh/kernel/io.c @@ -61,6 +61,73 @@ void memset_io(volatile void __iomem *dst, int c, unsigned long count) } EXPORT_SYMBOL(memset_io); +void __raw_readsl(unsigned long addr, void *datap, int len) +{ + u32 *data; + + for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--) + *data++ = ctrl_inl(addr); + + if (likely(len >= (0x20 >> 2))) { + int tmp2, tmp3, tmp4, tmp5, tmp6; + + __asm__ __volatile__( + "1: \n\t" + "mov.l @%7, r0 \n\t" + "mov.l @%7, %2 \n\t" +#ifdef CONFIG_CPU_SH4 + "movca.l r0, @%0 \n\t" +#else + "mov.l r0, @%0 \n\t" +#endif + "mov.l @%7, %3 \n\t" + "mov.l @%7, %4 \n\t" + "mov.l @%7, %5 \n\t" + "mov.l @%7, %6 \n\t" + "mov.l @%7, r7 \n\t" + "mov.l @%7, r0 \n\t" + "mov.l %2, @(0x04,%0) \n\t" + "mov #0x20>>2, %2 \n\t" + "mov.l %3, @(0x08,%0) \n\t" + "sub %2, %1 \n\t" + "mov.l %4, @(0x0c,%0) \n\t" + "cmp/hi %1, %2 ! T if 32 > len \n\t" + "mov.l %5, @(0x10,%0) \n\t" + "mov.l %6, @(0x14,%0) \n\t" + "mov.l r7, @(0x18,%0) \n\t" + "mov.l r0, @(0x1c,%0) \n\t" + "bf.s 1b \n\t" + " add #0x20, %0 \n\t" + : "=&r" (data), "=&r" (len), + "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4), + "=&r" (tmp5), "=&r" (tmp6) + : "r"(addr), "0" (data), "1" (len) + : "r0", "r7", "t", "memory"); + } + + for (; len != 0; len--) + *data++ = ctrl_inl(addr); +} +EXPORT_SYMBOL(__raw_readsl); + +void __raw_writesl(unsigned long addr, const void *data, int len) +{ + if (likely(len != 0)) { + int tmp1; + + __asm__ __volatile__ ( + "1: \n\t" + "mov.l @%0+, %1 \n\t" + "dt %3 \n\t" + "bf.s 1b \n\t" + " mov.l %1, @%4 \n\t" + : "=&r" (data), "=&r" (tmp1) + : "0" (data), "r" (len), "r"(addr) + : "t", "memory"); + } +} +EXPORT_SYMBOL(__raw_writesl); + void __iomem *ioport_map(unsigned long port, unsigned int nr) { return sh_mv.mv_ioport_map(port, nr); diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h index 377160b8629..ed12d38e8c0 100644 --- a/include/asm-sh/io.h +++ b/include/asm-sh/io.h @@ -107,6 +107,9 @@ #define __raw_writew(v, a) __writew(v, (void __iomem *)(a)) #define __raw_writel(v, a) __writel(v, (void __iomem *)(a)) +void __raw_writesl(unsigned long addr, const void *data, int longlen); +void __raw_readsl(unsigned long addr, void *data, int longlen); + /* * The platform header files may define some of these macros to use * the inlined versions where appropriate. These macros may also be @@ -132,6 +135,9 @@ # define writel(v,a) ({ __raw_writel((v),(a)); mb(); }) #endif +#define writesl __raw_writesl +#define readsl __raw_readsl + #define readb_relaxed(a) readb(a) #define readw_relaxed(a) readw(a) #define readl_relaxed(a) readl(a) |