habanalabs/gaudi2: print page fault axi transaction id

AXI transaction id holds information about the initiator which caused
the page fault. In the future it will be translated automatically by
driver to an initiator name.

Signed-off-by: Dani Liberman <dliberman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/drivers/accel/habanalabs/gaudi2/gaudi2.c b/drivers/accel/habanalabs/gaudi2/gaudi2.c
index 8c0cbd3..72e08c1 100644 (file)
--- a/drivers/accel/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/accel/habanalabs/gaudi2/gaudi2.c
@@ -8287,7 +8287,7 @@ static int gaudi2_handle_hif_fatal(struct hl_device *hdev, u16 event_type, u64 i
 static void gaudi2_handle_page_error(struct hl_device *hdev, u64 mmu_base, bool is_pmmu,
                                        u64 *event_mask)
 {
-       u32 valid, val;
+       u32 valid, val, axid_l, axid_h;
        u64 addr;
 
        valid = RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_ACCESS_PAGE_ERROR_VALID));
@@ -8300,8 +8300,11 @@ static void gaudi2_handle_page_error(struct hl_device *hdev, u64 mmu_base, bool
        addr <<= 32;
        addr |= RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_ERROR_CAPTURE_VA));
 
-       dev_err_ratelimited(hdev->dev, "%s page fault on va 0x%llx\n",
-                               is_pmmu ? "PMMU" : "HMMU", addr);
+       axid_l = RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_FAULT_ID_LSB));
+       axid_h = RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_FAULT_ID_MSB));
+
+       dev_err_ratelimited(hdev->dev, "%s page fault on va 0x%llx, transaction id 0x%llX\n",
+                               is_pmmu ? "PMMU" : "HMMU", addr, ((u64)axid_h << 32) + axid_l);
        hl_handle_page_fault(hdev, addr, 0, is_pmmu, event_mask);
 
        WREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_ERROR_CAPTURE), 0);