On Thu, Sep 2, 2021 at 9:58 PM Anup Patel <anup.patel@wdc.com> wrote:
>
> We should use the AIA INTC compatible string in the CPU INTC
> DT nodes when the CPUs support AIA feature. This will allow
> Linux INTC driver to use AIA local interrupt CSRs.
>
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Alistair
> ---
> hw/riscv/virt.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
> index ec0cb69b8c..f43304beca 100644
> --- a/hw/riscv/virt.c
> +++ b/hw/riscv/virt.c
> @@ -211,8 +211,17 @@ static void create_fdt_socket_cpus(RISCVVirtState *s, int socket,
> qemu_fdt_add_subnode(mc->fdt, intc_name);
> qemu_fdt_setprop_cell(mc->fdt, intc_name, "phandle",
> intc_phandles[cpu]);
> - qemu_fdt_setprop_string(mc->fdt, intc_name, "compatible",
> - "riscv,cpu-intc");
> + if (riscv_feature(&s->soc[socket].harts[cpu].env,
> + RISCV_FEATURE_AIA)) {
> + static const char * const compat[2] = {
> + "riscv,cpu-intc-aia", "riscv,cpu-intc"
> + };
> + qemu_fdt_setprop_string_array(mc->fdt, name, "compatible",
> + (char **)&compat, ARRAY_SIZE(compat));
> + } else {
> + qemu_fdt_setprop_string(mc->fdt, intc_name, "compatible",
> + "riscv,cpu-intc");
> + }
> qemu_fdt_setprop(mc->fdt, intc_name, "interrupt-controller", NULL, 0);
> qemu_fdt_setprop_cell(mc->fdt, intc_name, "#interrupt-cells", 1);
>
> --
> 2.25.1
>
>