Hi Jingyi,
On 7/2/20 5:01 AM, Jingyi Wang wrote:
> Triggers LPIs through the INT command and test the latency.
> Mostly inherited form commit 0ef02cd6cbaa(arm/arm64: ITS: INT
> functional tests).
>
> Signed-off-by: Jingyi Wang <wangjingyi11@xxxxxxxxxx>
> ---
> arm/micro-bench.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 44 insertions(+)
>
> diff --git a/arm/micro-bench.c b/arm/micro-bench.c
> index 80d8db3..aeb60a7 100644
> --- a/arm/micro-bench.c
> +++ b/arm/micro-bench.c
> @@ -20,6 +20,7 @@
> */
> #include <libcflat.h>
> #include <asm/gic.h>
> +#include <asm/gic-v3-its.h>
>
> #define NTIMES (1U << 16)
>
> @@ -145,6 +146,48 @@ static void ipi_exec(void)
> assert_msg(irq_received, "failed to receive IPI in time, but received %d successfully\n", received);
> }
>
> +static bool lpi_prep(void)
> +{
> + struct its_collection *col1;
> + struct its_device *dev2;
> +
> + if (!gicv3_its_base())
> + return false;
> +
> + its_enable_defaults();
> + dev2 = its_create_device(2 /* dev id */, 8 /* nb_ites */);
> + col1 = its_create_collection(1 /* col id */, 1 /* target PE */);
> + gicv3_lpi_set_config(8199, LPI_PROP_DEFAULT);
> +
> + its_send_mapd_nv(dev2, true);
> + its_send_mapc_nv(col1, true);
> + its_send_invall_nv(col1);
> + its_send_mapti_nv(dev2, 8199 /* lpi id */, 20 /* event id */, col1);
> +
> + gic_prep_common();
> + return true;
> +}
> +
> +static void lpi_exec(void)
> +{
> + struct its_device *dev2;
> + unsigned tries = 1 << 28;
> + static int received = 0;
> +
> + irq_received = false;
> +
> + dev2 = its_get_device(2);
> + its_send_int_nv(dev2, 20);
> +
> + while (!irq_received && tries--)
> + cpu_relax();
> +
> + if (irq_received)
> + ++received;
> +
> + assert_msg(irq_received, "failed to receive LPI in time, but received %d successfully\n", received);
> +}
> +
> static void hvc_exec(void)
> {
> asm volatile("mov w0, #0x4b000000; hvc #0" ::: "w0");
> @@ -190,6 +233,7 @@ static struct exit_test tests[] = {
> {"eoi", NULL, eoi_exec, true},
> {"ipi", ipi_prep, ipi_exec, true},
> {"ipi_hw", ipi_hw_prep, ipi_exec, true},
> + {"lpi", lpi_prep, lpi_exec, true},
> };
>
> struct ns_time {
>
Looks good to me (w/wo the lpi_prep returned value change)
Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
Thanks
Eric
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