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arch/tile: various header improvements for building drivers

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This change adds a number of missing headers in asm (fb.h, parport.h,
serial.h, and vga.h) using the minimal generic versions.

It also adds a number of missing interfaces that showed up as build
failures when trying to build various drivers not normally included in the
"tile" distribution: ioremap_wc(), memset_io(), io{read,write}{16,32}be(),
virt_to_bus(), bus_to_virt(), irq_canonicalize(), __pte(), __pgd(),
and __pmd().  I also added a cast in virt_to_page() since not all callers
pass a pointer.

I fixed <asm/stat.h> to properly include a __KERNEL__ guard for the
__ARCH_WANT_STAT64 symbol, and <asm/swab.h> to use __builtin_bswap32()
even for our 64-bit architecture, since the same code is produced.

I added an export for get_cycles(), since it's used in some modules.

And I made <arch/spr_def.h> properly include the __KERNEL__ guard,
even though it's not yet exported, since it likely will be soon.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2011-05-02 16:06:42 -04:00
parent dbb434214e
commit 28d717411b
11 changed files with 83 additions and 10 deletions
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18
arch/tile/include/asm/io.h
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@@ -52,6 +52,7 @@ extern void iounmap(volatile void __iomem *addr);
#endif
#define ioremap_nocache(physaddr, size) ioremap(physaddr, size)
#define ioremap_wc(physaddr, size) ioremap(physaddr, size)
#define ioremap_writethrough(physaddr, size) ioremap(physaddr, size)
#define ioremap_fullcache(physaddr, size) ioremap(physaddr, size)
@@ -161,6 +162,15 @@ static inline void _tile_writeq(u64 val, unsigned long addr)
#define iowrite32 writel
#define iowrite64 writeq
static inline void memset_io(void *dst, int val, size_t len)
{
int x;
BUG_ON((unsigned long)dst & 0x3);
val = (val & 0xff) * 0x01010101;
for (x = 0; x < len; x += 4)
writel(val, dst + x);
}
static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
size_t len)
{
@@ -269,6 +279,11 @@ static inline void outsl(unsigned long addr, const void *buffer, int count)
ioport_panic();
}
#define ioread16be(addr) be16_to_cpu(ioread16(addr))
#define ioread32be(addr) be32_to_cpu(ioread32(addr))
#define iowrite16be(v, addr) iowrite16(be16_to_cpu(v), (addr))
#define iowrite32be(v, addr) iowrite32(be32_to_cpu(v), (addr))
#define ioread8_rep(p, dst, count) \
insb((unsigned long) (p), (dst), (count))
#define ioread16_rep(p, dst, count) \
@@ -283,4 +298,7 @@ static inline void outsl(unsigned long addr, const void *buffer, int count)
#define iowrite32_rep(p, src, count) \
outsl((unsigned long) (p), (src), (count))
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
#endif /* _ASM_TILE_IO_H */