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| author | Huacai Chen <chenhuacai@loongson.cn> | 2022-07-20 18:51:30 +0800 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-07-20 12:09:21 +0100 |
| commit | dd281e1a1a937ee2f13bd0db5be78e5f5b811ca7 (patch) | |
| tree | 1bb0730b67f2b9fe4556eed87417e0f2cda0728c /drivers/irqchip/irq-loongarch-cpu.c | |
| parent | 0858ed035a85c3ae79553200d2d818797cf849f5 (diff) | |
| download | linux-stable-dd281e1a1a937ee2f13bd0db5be78e5f5b811ca7.tar.gz linux-stable-dd281e1a1a937ee2f13bd0db5be78e5f5b811ca7.tar.bz2 linux-stable-dd281e1a1a937ee2f13bd0db5be78e5f5b811ca7.zip | |
irqchip: Add Loongson Extended I/O interrupt controller support
EIOINTC stands for "Extended I/O Interrupts" that described in Section
11.2 of "Loongson 3A5000 Processor Reference Manual". For more
information please refer Documentation/loongarch/irq-chip-model.rst.
Loongson-3A5000 has 4 cores per NUMA node, and each NUMA node has an
EIOINTC; while Loongson-3C5000 has 16 cores per NUMA node, and each NUMA
node has 4 EIOINTCs. In other words, 16 cores of one NUMA node in
Loongson-3C5000 are organized in 4 groups, each group connects to an
EIOINTC. We call the "group" here as an EIOINTC node, so each EIOINTC
node always includes 4 cores (both in Loongson-3A5000 and Loongson-
3C5000).
Co-developed-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1658314292-35346-12-git-send-email-lvjianmin@loongson.cn
Diffstat (limited to 'drivers/irqchip/irq-loongarch-cpu.c')
0 files changed, 0 insertions, 0 deletions