From: "Wachowski, Karol" <karol.wachowski@xxxxxxxxx>
Send workpoint 0 request during power up on 37xx.
This is needed in rare case where WP0 was not sent
during power down due to device hang.
Signed-off-by: Wachowski, Karol <karol.wachowski@xxxxxxxxx>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@xxxxxxxxxxxxxxx>
---
drivers/accel/ivpu/ivpu_drv.h | 1 +
drivers/accel/ivpu/ivpu_hw.c | 11 +++++++++++
2 files changed, 12 insertions(+)
diff --git a/drivers/accel/ivpu/ivpu_drv.h b/drivers/accel/ivpu/ivpu_drv.h
index 39df96a7623b..823e10c41816 100644
--- a/drivers/accel/ivpu/ivpu_drv.h
+++ b/drivers/accel/ivpu/ivpu_drv.h
@@ -102,6 +102,7 @@ struct ivpu_wa_table {
bool interrupt_clear_with_0;
bool disable_clock_relinquish;
bool disable_d0i3_msg;
+ bool wp0_during_power_up;
};
struct ivpu_hw_info;
diff --git a/drivers/accel/ivpu/ivpu_hw.c b/drivers/accel/ivpu/ivpu_hw.c
index 9f5e3875baf1..daf1e4afb479 100644
--- a/drivers/accel/ivpu/ivpu_hw.c
+++ b/drivers/accel/ivpu/ivpu_hw.c
@@ -64,10 +64,14 @@ static void wa_init(struct ivpu_device *vdev)
if (ivpu_device_id(vdev) == PCI_DEVICE_ID_LNL)
vdev->wa.disable_clock_relinquish = true;
+ if (ivpu_hw_ip_gen(vdev) == IVPU_HW_IP_37XX)
+ vdev->wa.wp0_during_power_up = true;
+
IVPU_PRINT_WA(punit_disabled);
IVPU_PRINT_WA(clear_runtime_mem);
IVPU_PRINT_WA(interrupt_clear_with_0);
IVPU_PRINT_WA(disable_clock_relinquish);
+ IVPU_PRINT_WA(wp0_during_power_up);
}
static void timeouts_init(struct ivpu_device *vdev)
@@ -125,6 +129,13 @@ int ivpu_hw_power_up(struct ivpu_device *vdev)
{
int ret;
+ if (IVPU_WA(wp0_during_power_up)) {
+ /* WP requests may fail when powering down, so issue WP 0 here */
+ ret = wp_disable(vdev);
+ if (ret)
+ ivpu_warn(vdev, "Failed to disable workpoint: %d\n", ret);
+ }
+
ret = ivpu_hw_btrs_d0i3_disable(vdev);
if (ret)
ivpu_warn(vdev, "Failed to disable D0I3: %d\n", ret);
--
2.45.1
