accel/ivpu: Dump MMU events in case of VPU boot timeout

Add ivpu_mmu_evtq_dump() function that dumps existing MMU events from
MMU event queue. Call this function if VPU boot failed.

Previously MMU events were only checked in interrupt handler, but if VPU
failed to boot due to MMU faults, those faults were missed because of
interrupts not yet being enabled. This will allow checking potential
fault reason of VPU not booting.

Signed-off-by: Wachowski, Karol <karol.wachowski@intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240115134434.493839-2-jacek.lawrynowicz@linux.intel.com

diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c
index 64927682161b282e739ef024a0ccff29c49de2cd..0c3180411b0e9dc0ade34a9b4fbec01fb312af4e 100644 (file)
--- a/drivers/accel/ivpu/ivpu_drv.c
+++ b/drivers/accel/ivpu/ivpu_drv.c
@@ -369,6 +369,7 @@ int ivpu_boot(struct ivpu_device *vdev)
        ret = ivpu_wait_for_ready(vdev);
        if (ret) {
                ivpu_err(vdev, "Failed to boot the firmware: %d\n", ret);
+               ivpu_mmu_evtq_dump(vdev);
                return ret;
        }
 

diff --git a/drivers/accel/ivpu/ivpu_mmu.c b/drivers/accel/ivpu/ivpu_mmu.c
index 2228c44b115fa0e4d48f36c115e2fdc7b434a8c0..92ef651098d839c498dad19f6c460cba8e2bb23f 100644 (file)
--- a/drivers/accel/ivpu/ivpu_mmu.c
+++ b/drivers/accel/ivpu/ivpu_mmu.c
@@ -905,6 +905,14 @@ void ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev)
                ivpu_pm_schedule_recovery(vdev);
 }
 
+void ivpu_mmu_evtq_dump(struct ivpu_device *vdev)
+{
+       u32 *event;
+
+       while ((event = ivpu_mmu_get_event(vdev)) != NULL)
+               ivpu_mmu_dump_event(vdev, event);
+}
+
 void ivpu_mmu_irq_gerr_handler(struct ivpu_device *vdev)
 {
        u32 gerror_val, gerrorn_val, active;

diff --git a/drivers/accel/ivpu/ivpu_mmu.h b/drivers/accel/ivpu/ivpu_mmu.h
index cb551126806baa9bb47a967c7bff916b444c2427..6fa35c240710625670b6879098833c6cd680fb40 100644 (file)
--- a/drivers/accel/ivpu/ivpu_mmu.h
+++ b/drivers/accel/ivpu/ivpu_mmu.h
@@ -46,5 +46,6 @@ int ivpu_mmu_invalidate_tlb(struct ivpu_device *vdev, u16 ssid);
 
 void ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev);
 void ivpu_mmu_irq_gerr_handler(struct ivpu_device *vdev);
+void ivpu_mmu_evtq_dump(struct ivpu_device *vdev);
 
 #endif /* __IVPU_MMU_H__ */