forked from Minki/linux
f490682a6b
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> |
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| .. | ||
| cs5536 | ||
| bonito-irq.c | ||
| cmdline.c | ||
| dma-swiotlb.c | ||
| early_printk.c | ||
| env.c | ||
| gpio.c | ||
| init.c | ||
| irq.c | ||
| machtype.c | ||
| Makefile | ||
| mem.c | ||
| pci.c | ||
| platform.c | ||
| pm.c | ||
| reset.c | ||
| rtc.c | ||
| serial.c | ||
| setup.c | ||
| time.c | ||
| uart_base.c | ||