linux

iv/linux

History

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

cs5536

MIPS: Whitespace cleanup.

2013-02-01 10:00:22 +01:00

boot_param.h

MIPS: Add Loongson-3B support

2014-07-30 21:47:00 +02:00

cpu-feature-overrides.h

MIPS: Loongson: Set Loongson-3's ISA level to MIPS64R1

2014-11-19 18:22:07 +01:00

dma-coherence.h

MIPS: Loongson-3: Add PHYS48_TO_HT40 support