diff options
Diffstat (limited to 'include/asm-blackfin')
| -rw-r--r-- | include/asm-blackfin/blackfin_local.h | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/include/asm-blackfin/blackfin_local.h b/include/asm-blackfin/blackfin_local.h index 4e1583443..e17d8a200 100644 --- a/include/asm-blackfin/blackfin_local.h +++ b/include/asm-blackfin/blackfin_local.h @@ -66,17 +66,11 @@ extern void blackfin_dcache_flush_range(const void *, const void *); extern void blackfin_icache_dcache_flush_range(const void *, const void *); extern void blackfin_dcache_flush_invalidate_range(const void *, const void *); -/* Use DMA to move data from on chip to external memory. While this is - * required for only L1 instruction (it is not directly readable by the - * core via data loads), it isn't a huge performance issue for other - * regions (it's probably even faster than core load/stores). However, - * the DMA engine does not have access to the L1 scratchpad, and we - * cannot use DMA inside of the MMR space. +/* Use DMA to move data from on chip to external memory. The L1 instruction + * regions can only be accessed via DMA, so if the address in question is in + * that region, make sure we attempt to DMA indirectly. */ -# define addr_bfin_on_chip_mem(addr) \ - (((unsigned long)(addr) >= 0xef000000 && (unsigned long)addr < SYSMMR_BASE) && \ - !((unsigned long)(addr) >= L1_SRAM_SCRATCH && \ - (unsigned long)(addr) < L1_SRAM_SCRATCH_END)) +# define addr_bfin_on_chip_mem(addr) (((unsigned long)(addr) & 0xFFF00000) == 0xFFA00000) # include <asm/system.h> |