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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-31 15:52:51 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-31 15:52:51 +0100 |
commit | 63b40456a30912084c90753582137b9e0495c5c3 (patch) | |
tree | eedba8710d0ba3c802ecf77f46ed6ab2c73e2149 /arch/sparc64/lib | |
parent | Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tyt... (diff) | |
parent | sparc64: Add missing null terminating entry to bq4802_match[]. (diff) | |
download | linux-63b40456a30912084c90753582137b9e0495c5c3.tar.xz linux-63b40456a30912084c90753582137b9e0495c5c3.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Add missing null terminating entry to bq4802_match[].
sparc: use the new byteorder headers
rtc-m48t59: shift zero year to 1968 on sparc (rev 2)
dbri: check dma_alloc_coherent errors
sparc64: remove byteshifting from out* helpers
Diffstat (limited to 'arch/sparc64/lib')
-rw-r--r-- | arch/sparc64/lib/PeeCeeI.c | 139 |
1 files changed, 47 insertions, 92 deletions
diff --git a/arch/sparc64/lib/PeeCeeI.c b/arch/sparc64/lib/PeeCeeI.c index 8b313f11bc8d..46053e6ddd7b 100644 --- a/arch/sparc64/lib/PeeCeeI.c +++ b/arch/sparc64/lib/PeeCeeI.c @@ -20,107 +20,62 @@ void outsw(unsigned long __addr, const void *src, unsigned long count) { void __iomem *addr = (void __iomem *) __addr; - 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); - } + while (count--) { + __raw_writew(*(u16 *)src, addr); + src += sizeof(u16); } } void outsl(unsigned long __addr, const void *src, unsigned long count) { void __iomem *addr = (void __iomem *) __addr; + u32 l, l2; - 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; + if (!count) + return; - 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; - } + switch (((unsigned long)src) & 0x3) { + case 0x0: + /* src is naturally aligned */ + while (count--) { + __raw_writel(*(u32 *)src, addr); + src += sizeof(u32); + } + break; + case 0x2: + /* 2-byte alignment */ + while (count--) { + l = (*(u16 *)src) << 16; + l |= *(u16 *)(src + sizeof(u16)); + __raw_writel(l, addr); + src += sizeof(u32); + } + break; + case 0x1: + /* Hold three bytes in l each time, grab a byte from l2 */ + l = (*(u8 *)src) << 24; + l |= (*(u16 *)(src + sizeof(u8))) << 8; + src += sizeof(u8) + sizeof(u16); + while (count--) { + l2 = *(u32 *)src; + l |= (l2 >> 24); + __raw_writel(l, addr); + l = l2 << 8; + src += sizeof(u32); + } + break; + case 0x3: + /* Hold a byte in l each time, grab 3 bytes from l2 */ + l = (*(u8 *)src) << 24; + src += sizeof(u8); + while (count--) { + l2 = *(u32 *)src; + l |= (l2 >> 8); + __raw_writel(l, addr); + l = l2 << 24; + src += sizeof(u32); } + break; } } |