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On LoongArch physical machine, one extioi interrupt controller only
supports 4 cpus. With processor more than 4 cpus, there are multiple
extioi interrupt controllers; if interrupts need to be routed to
other cpus, they are forwarded from extioi node0 to other extioi nodes.
On virt machine model, there is simple extioi interrupt device model.
All cpus can access register of extioi interrupt controller, however
interrupt can only be route to 4 vcpu for compatible with old kernel.
This patch adds dynamic cpu number support about extioi interrupt.
With old kernel legacy extioi model is used, however kernel can detect
and choose new route method in future, so that interrupt can be routed to
all vcpus.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20231215100333.3933632-4-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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LoongArch system has iocsr address space, most iocsr registers are
per-board, however some iocsr register spaces banked for percpu such
as ipi mailbox and extioi interrupt status. For banked iocsr space,
each cpu has the same iocsr space, but separate data.
This patch changes iocsr address space per-board rather percpu,
for iocsr registers specified for cpu, MemTxAttrs.requester_id
can be parsed for the cpu. With this patches, the total address space
on board will be simple, only iocsr address space and system memory,
rather than the number of cpu and system memory.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20231215100333.3933632-3-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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There are two interface pairs for MemoryRegionOps, read/write and
read_with_attrs/write_with_attrs. The later is better for ipi device
emulation since initial cpu can be parsed from attrs.requester_id.
And requester_id can be overrided for IOCSR_IPI_SEND and mail_send
function when it is to forward message to another vcpu.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20231215100333.3933632-2-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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Add kvm.c into meson.build to compile it when kvm
is configed. Meanwhile in meson.build, we set the
kvm_targets to loongarch64-softmmu when the cpu is
loongarch. And fix the compiling error when config
is enable-kvm,disable-tcg.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240105075804.1228596-10-zhaotianrui@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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Implement loongarch kvm set vcpu interrupt interface,
when a irq is set in vcpu, we use the KVM_INTERRUPT
ioctl to set intr into kvm.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20240105075804.1228596-9-zhaotianrui@loongson.cn>
[PMD: Split from bigger patch, part 2]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240110094152.52138-2-philmd@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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In preparation of supporting KVM in the next commit.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20240105075804.1228596-9-zhaotianrui@loongson.cn>
[PMD: Split from bigger patch, part 1]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240110094152.52138-1-philmd@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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Implement kvm_arch_handle_exit for loongarch. In this
function, the KVM_EXIT_LOONGARCH_IOCSR is handled,
we read or write the iocsr address space by the addr,
length and is_write argument in kvm_run.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240105075804.1228596-8-zhaotianrui@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
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Implement kvm_arch_init_vcpu interface for loongarch,
in this function, we register VM change state handler.
And when VM state changes to running, the counter value
should be put into kvm to keep consistent with kvm,
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