Huacai Chen f490682a6b MIPS: Loongson-3: Add PHYS48_TO_HT40 support ... The width of HT-bus is only 40-bit, but Loongson-3 has 48-bit physical address. This implies only node-0's memory is DMAable because high bits (Node ID) will lost. Fortunately, by configuring address windows in firmware, we can extract 2bit Node ID (bit 44~47, only bit 44~45 used now) from Loongson-3's 48-bit address space and embed it into 40-bit (bit 37~38). Every NUMA node can do DMA now (however, maximum memory of each node is reduced to 2^37 = 128GB). Signed-off-by: Huacai Chen <chenhc@lemote.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/8321/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2014-11-24 07:45:01 +01:00
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asm	MIPS: Loongson-3: Add PHYS48_TO_HT40 support	2014-11-24 07:45:01 +01:00
uapi/asm	MIPS: Wire up bpf syscall.	2014-10-27 03:37:42 +01:00