RDMA/ocrdma: Report EQ full fatal error

Detect when Event Queue (EQ) becomes full and print a warning message.

Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

2 files changed, 13 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index 3a5ea5afc2a2..65759acb12dc 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -933,12 +933,18 @@ static irqreturn_t ocrdma_irq_handler(int irq, void *handle)
         struct ocrdma_eqe eqe;
         struct ocrdma_eqe *ptr;
         u16 cq_id;
+        u8 mcode;
         int budget = eq->cq_cnt;
 
         do {
                 ptr = ocrdma_get_eqe(eq);
                 eqe = *ptr;
                 ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
+                mcode = (eqe.id_valid & OCRDMA_EQE_MAJOR_CODE_MASK)
+                                >> OCRDMA_EQE_MAJOR_CODE_SHIFT;
+                if (mcode == OCRDMA_MAJOR_CODE_SENTINAL)
+                        pr_err("EQ full on eqid = 0x%x, eqe = 0x%x\n",
+                               eq->q.id, eqe.id_valid);
                 if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
                         break;
 
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
index 243c87c8bd65..baf9b8a0f278 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
@@ -1624,12 +1624,19 @@ struct ocrdma_delete_ah_tbl_rsp {
 enum {
         OCRDMA_EQE_VALID_SHIFT          = 0,
         OCRDMA_EQE_VALID_MASK           = BIT(0),
+        OCRDMA_EQE_MAJOR_CODE_MASK      = 0x0E,
+        OCRDMA_EQE_MAJOR_CODE_SHIFT     = 0x01,
         OCRDMA_EQE_FOR_CQE_MASK         = 0xFFFE,
         OCRDMA_EQE_RESOURCE_ID_SHIFT    = 16,
         OCRDMA_EQE_RESOURCE_ID_MASK     = 0xFFFF <<
                                 OCRDMA_EQE_RESOURCE_ID_SHIFT,
 };
 
+enum major_code {
+        OCRDMA_MAJOR_CODE_COMPLETION    = 0x00,
+        OCRDMA_MAJOR_CODE_SENTINAL      = 0x01
+};
+
 struct ocrdma_eqe {
         u32 id_valid;
 };