diff options
Diffstat (limited to 'arch/sparc64/lib/PeeCeeI.c')
| -rw-r--r-- | arch/sparc64/lib/PeeCeeI.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/arch/sparc64/lib/PeeCeeI.c b/arch/sparc64/lib/PeeCeeI.c new file mode 100644 index 00000000000..3008d536e8c --- /dev/null +++ b/arch/sparc64/lib/PeeCeeI.c @@ -0,0 +1,237 @@ +/* $Id: PeeCeeI.c,v 1.4 1999/09/06 01:17:35 davem Exp $ + * PeeCeeI.c: The emerging standard... + * + * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) + */ + +#include <asm/io.h> +#include <asm/byteorder.h> + +void outsb(void __iomem *addr, const void *src, unsigned long count) +{ + const u8 *p = src; + + while(count--) + outb(*p++, addr); +} + +void outsw(void __iomem *addr, const void *src, unsigned long count) +{ + if(count) { + u16 *ps = (u16 *)src; + u32 *pi; + + if(((u64)src) & 0x2) { + u16 val = le16_to_cpup(ps); + outw(val, addr); + ps++; + count--; + } + pi = (u32 *)ps; + while(count >= 2) { + u32 w = le32_to_cpup(pi); + + pi++; + outw(w >> 0, addr); + outw(w >> 16, addr); + count -= 2; + } + ps = (u16 *)pi; + if(count) { + u16 val = le16_to_cpup(ps); + outw(val, addr); + } + } +} + +void outsl(void __iomem *addr, const void *src, unsigned long count) +{ + if(count) { + if((((u64)src) & 0x3) == 0) { + u32 *p = (u32 *)src; + while(count--) { + u32 val = cpu_to_le32p(p); + outl(val, addr); + p++; + } + } else { + u8 *pb; + u16 *ps = (u16 *)src; + u32 l = 0, l2; + u32 *pi; + + switch(((u64)src) & 0x3) { + case 0x2: + count -= 1; + l = cpu_to_le16p(ps) << 16; + ps++; + pi = (u32 *)ps; + while(count--) { + l2 = cpu_to_le32p(pi); + pi++; + outl(((l >> 16) | (l2 << 16)), addr); + l = l2; + } + ps = (u16 *)pi; + l2 = cpu_to_le16p(ps); + outl(((l >> 16) | (l2 << 16)), addr); + break; + + case 0x1: + count -= 1; + pb = (u8 *)src; + l = (*pb++ << 8); + ps = (u16 *)pb; + l2 = cpu_to_le16p(ps); + ps++; + l |= (l2 << 16); + pi = (u32 *)ps; + while(count--) { + l2 = cpu_to_le32p(pi); + pi++; + outl(((l >> 8) | (l2 << 24)), addr); + l = l2; + } + pb = (u8 *)pi; + outl(((l >> 8) | (*pb << 24)), addr); + break; + + case 0x3: + count -= 1; + pb = (u8 *)src; + l = (*pb++ << 24); + pi = (u32 *)pb; + while(count--) { + l2 = cpu_to_le32p(pi); + pi++; + outl(((l >> 24) | (l2 << 8)), addr); + l = l2; + } + ps = (u16 *)pi; + l2 = cpu_to_le16p(ps); + ps++; + pb = (u8 *)ps; + l2 |= (*pb << 16); + outl(((l >> 24) | (l2 << 8)), addr); + break; + } + } + } +} + +void insb(void __iomem *addr, void *dst, unsigned long count) +{ + if(count) { + u32 *pi; + u8 *pb = dst; + + while((((unsigned long)pb) & 0x3) && count--) + *pb++ = inb(addr); + pi = (u32 *)pb; + while(count >= 4) { + u32 w; + + w = (inb(addr) << 24); + w |= (inb(addr) << 16); + w |= (inb(addr) << 8); + w |= (inb(addr) << 0); + *pi++ = w; + count -= 4; + } + pb = (u8 *)pi; + while(count--) + *pb++ = inb(addr); + } +} + +void insw(void __iomem *addr, void *dst, unsigned long count) +{ + if(count) { + u16 *ps = dst; + u32 *pi; + + if(((unsigned long)ps) & 0x2) { + *ps++ = le16_to_cpu(inw(addr)); + count--; + } + pi = (u32 *)ps; + while(count >= 2) { + u32 w; + + w = (le16_to_cpu(inw(addr)) << 16); + w |= (le16_to_cpu(inw(addr)) << 0); + *pi++ = w; + count -= 2; + } + ps = (u16 *)pi; + if(count) + *ps = le16_to_cpu(inw(addr)); + } +} + +void insl(void __iomem *addr, void *dst, unsigned long count) +{ + if(count) { + if((((unsigned long)dst) & 0x3) == 0) { + u32 *pi = dst; + while(count--) + *pi++ = le32_to_cpu(inl(addr)); + } else { + u32 l = 0, l2, *pi; + u16 *ps; + u8 *pb; + + switch(((unsigned long)dst) & 3) { + case 0x2: + ps = dst; + count -= 1; + l = le32_to_cpu(inl(addr)); + *ps++ = l; + pi = (u32 *)ps; + while(count--) { + l2 = le32_to_cpu(inl(addr)); + *pi++ = (l << 16) | (l2 >> 16); + l = l2; + } + ps = (u16 *)pi; + *ps = l; + break; + + case 0x1: + pb = dst; + count -= 1; + l = le32_to_cpu(inl(addr)); + *pb++ = l >> 24; + ps = (u16 *)pb; + *ps++ = ((l >> 8) & 0xffff); + pi = (u32 *)ps; + while(count--) { + l2 = le32_to_cpu(inl(addr)); + *pi++ = (l << 24) | (l2 >> 8); + l = l2; + } + pb = (u8 *)pi; + *pb = l; + break; + + case 0x3: + pb = (u8 *)dst; + count -= 1; + l = le32_to_cpu(inl(addr)); + *pb++ = l >> 24; + pi = (u32 *)pb; + while(count--) { + l2 = le32_to_cpu(inl(addr)); + *pi++ = (l << 8) | (l2 >> 24); + l = l2; + } + ps = (u16 *)pi; + *ps++ = ((l >> 8) & 0xffff); + pb = (u8 *)ps; + *pb = l; + break; + } + } + } +} + |