From: Andrzej Kacprowski Date: Sat, 28 Oct 2023 13:34:11 +0000 (+0200) Subject: accel/ivpu/40xx: Capture D0i3 entry host and device timestamps X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=db37a5bfe97588992c75c29c1f0e19c88d364ce5;p=linux.git accel/ivpu/40xx: Capture D0i3 entry host and device timestamps The driver needs to capture the D0i3 entry timestamp to calculate D0i3 residency time. The D0i3 residency time and the VPU timestamp are passed to the firmware at D0i3 exit (warm boot). Signed-off-by: Andrzej Kacprowski Reviewed-by: Stanislaw Gruszka Reviewed-by: Jeffrey Hugo Signed-off-by: Stanislaw Gruszka Link: https://patchwork.freedesktop.org/patch/msgid/20231028133415.1169975-8-stanislaw.gruszka@linux.intel.com --- diff --git a/drivers/accel/ivpu/ivpu_hw_40xx.c b/drivers/accel/ivpu/ivpu_hw_40xx.c index eb8218d15f01e..0eb9c827f6dcf 100644 --- a/drivers/accel/ivpu/ivpu_hw_40xx.c +++ b/drivers/accel/ivpu/ivpu_hw_40xx.c @@ -879,10 +879,18 @@ static bool ivpu_hw_40xx_is_idle(struct ivpu_device *vdev) REG_TEST_FLD(VPU_40XX_BUTTRESS_VPU_STATUS, IDLE, val); } +static void ivpu_hw_40xx_save_d0i3_entry_timestamp(struct ivpu_device *vdev) +{ + vdev->hw->d0i3_entry_host_ts = ktime_get_boottime(); + vdev->hw->d0i3_entry_vpu_ts = REGV_RD64(VPU_40XX_CPU_SS_TIM_PERF_EXT_FREE_CNT); +} + static int ivpu_hw_40xx_power_down(struct ivpu_device *vdev) { int ret = 0; + ivpu_hw_40xx_save_d0i3_entry_timestamp(vdev); + if (!ivpu_hw_40xx_is_idle(vdev) && ivpu_hw_40xx_reset(vdev)) ivpu_warn(vdev, "Failed to reset the VPU\n");