diff options
| author | Karol Wachowski <karol.wachowski@intel.com> | 2025-01-07 18:32:31 +0100 |
|---|---|---|
| committer | Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> | 2025-01-09 09:35:44 +0100 |
| commit | 353b8f48390d36b39276ff6af61464ec64cd4d5c (patch) | |
| tree | e084d68c7f62792e6fced25845b037c26617d8dd | |
| parent | 4480912f3f8b8a1fbb5ae12c5c547fd094ec4197 (diff) | |
accel/ivpu: Fix missing MMU events from reserved SSID
Generate recovery when fault from reserved context is detected.
Add Abort (A) bit to reserved (1) SSID to ensure NPU also receives a fault.
There is no way to create a file_priv with reserved SSID
but it is still possible to receive MMU faults from that SSID
as it is a default NPU HW setting. Such situation will occur if
FW freed context related resources but still performed access to DRAM.
Signed-off-by: Karol Wachowski <karol.wachowski@intel.com>
Signed-off-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250107173238.381120-9-maciej.falkowski@linux.intel.com
| -rw-r--r-- | drivers/accel/ivpu/ivpu_mmu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/accel/ivpu/ivpu_mmu.c b/drivers/accel/ivpu/ivpu_mmu.c index ae1dcd04051c..b80bdded9fd7 100644 --- a/drivers/accel/ivpu/ivpu_mmu.c +++ b/drivers/accel/ivpu/ivpu_mmu.c @@ -725,8 +725,8 @@ static int ivpu_mmu_cdtab_entry_set(struct ivpu_device *vdev, u32 ssid, u64 cd_d cd[2] = 0; cd[3] = 0x0000000000007444; - /* For global context generate memory fault on VPU */ - if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID) + /* For global and reserved contexts generate memory fault on VPU */ + if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID || ssid == IVPU_RESERVED_CONTEXT_MMU_SSID) cd[0] |= IVPU_MMU_CD_0_A; if (valid) @@ -945,7 +945,8 @@ void ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev) while ((event = ivpu_mmu_get_event(vdev))) { ssid = FIELD_GET(IVPU_MMU_EVT_SSID_MASK, *event); - if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID) { + if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID || + ssid == IVPU_RESERVED_CONTEXT_MMU_SSID) { ivpu_mmu_dump_event(vdev, event); ivpu_pm_trigger_recovery(vdev, "MMU event"); return; |