* Copyright (C) 1999 Don Dugger <don.dugger@intel.com>
*/
+#include <asm/unaligned.h>
+
/* We don't use IO slowdowns on the ia64, but.. */
#define __SLOW_DOWN_IO do { } while (0)
#define SLOW_DOWN_IO do { } while (0)
unsigned short *dp = dst;
while (count--)
- *dp++ = platform_inw(port);
+ put_unaligned(platform_inw(port), dp++);
}
static inline void
unsigned int *dp = dst;
while (count--)
- *dp++ = platform_inl(port);
+ put_unaligned(platform_inl(port), dp++);
}
static inline void
const unsigned short *sp = src;
while (count--)
- platform_outw(*sp++, port);
+ platform_outw(get_unaligned(sp++), port);
}
static inline void
const unsigned int *sp = src;
while (count--)
- platform_outl(*sp++, port);
+ platform_outl(get_unaligned(sp++), port);
}
/*
# endif /* __KERNEL__ */
-/*
- * Enabling BIO_VMERGE_BOUNDARY forces us to turn off I/O MMU bypassing. It is said that
- * BIO-level virtual merging can give up to 4% performance boost (not verified for ia64).
- * On the other hand, we know that I/O MMU bypassing gives ~8% performance improvement on
- * SPECweb-like workloads on zx1-based machines. Thus, for now we favor I/O MMU bypassing
- * over BIO-level virtual merging.
- */
-extern unsigned long ia64_max_iommu_merge_mask;
-#if 1
-#define BIO_VMERGE_BOUNDARY 0
-#else
-/*
- * It makes no sense at all to have this BIO_VMERGE_BOUNDARY macro here. Should be
- * replaced by dma_merge_mask() or something of that sort. Note: the only way
- * BIO_VMERGE_BOUNDARY is used is to mask off bits. Effectively, our definition gets
- * expanded into:
- *
- * addr & ((ia64_max_iommu_merge_mask + 1) - 1) == (addr & ia64_max_iommu_vmerge_mask)
- *
- * which is precisely what we want.
- */
-#define BIO_VMERGE_BOUNDARY (ia64_max_iommu_merge_mask + 1)
-#endif
-
#endif /* _ASM_IA64_IO_H */