On 2025/7/3 下午5:26, Song Gao wrote:
> Add write misc avecintc status bit and read avecintc feature and status bit.
Add feature register and misc register for avecintc feature checking and
setting?
>
> Signed-off-by: Song Gao <gaosong@loongson.cn>
> ---
> hw/loongarch/virt.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
> index 112cf9a9db..26db1bbd68 100644
> --- a/hw/loongarch/virt.c
> +++ b/hw/loongarch/virt.c
> @@ -560,6 +560,10 @@ static MemTxResult virt_iocsr_misc_write(void *opaque, hwaddr addr,
> return MEMTX_OK;
> }
>
> + if (val & BIT(IOCSRM_AVEC_EN)) {
> + lvms->misc_status |= BIT(IOCSRM_AVEC_EN);
> + }
> +
> features = address_space_ldl(&lvms->as_iocsr,
> EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG,
> attrs, NULL);
> @@ -595,6 +599,9 @@ static MemTxResult virt_iocsr_misc_read(void *opaque, hwaddr addr,
> break;
> case FEATURE_REG:
> ret = BIT(IOCSRF_MSI) | BIT(IOCSRF_EXTIOI) | BIT(IOCSRF_CSRIPI);
> + if (virt_is_avecintc_enabled(lvms)) {
Can the name virt_is_avecintc_enabled() be renamed as virt_has_avecintc()?
Regards
Bibo Mao
> + ret |= BIT(IOCSRF_AVEC);
> + }
> if (kvm_enabled()) {
> ret |= BIT(IOCSRF_VM);
> }
> @@ -624,6 +631,10 @@ static MemTxResult virt_iocsr_misc_read(void *opaque, hwaddr addr,
> if (features & BIT(EXTIOI_ENABLE_INT_ENCODE)) {
> ret |= BIT_ULL(IOCSRM_EXTIOI_INT_ENCODE);
> }
> + if (virt_is_avecintc_enabled(lvms) &&
> + (lvms->misc_status & BIT(IOCSRM_AVEC_EN))) {
> + ret |= BIT_ULL(IOCSRM_AVEC_EN);
> + }
> break;
> default:
> g_assert_not_reached();
>