MAINTAINERS: Add cxgb4 and iw_cxgb4 entries

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 23 insertions, 9 deletions

diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h
index 3f0d2172efda..d0e8af352408 100644
--- a/drivers/infiniband/hw/cxgb4/t4.h
+++ b/drivers/infiniband/hw/cxgb4/t4.h
@@ -36,7 +36,6 @@
 #include "t4_msg.h"
 #include "t4fw_ri_api.h"
 
-#define T4_MAX_READ_DEPTH 16
 #define T4_QID_BASE 1024
 #define T4_MAX_QIDS 256
 #define T4_MAX_NUM_QP (1<<16)
@@ -450,11 +449,25 @@ struct t4_cq {
 static inline int t4_arm_cq(struct t4_cq *cq, int se)
 {
         u32 val;
-
-        val = SEINTARM(se) | CIDXINC(cq->cidx_inc) | TIMERREG(6) |
-              INGRESSQID(cq->cqid);
-        cq->cidx_inc = 0;
-        writel(val, cq->gts);
+        u16 inc;
+
+        do {
+                /*
+                 * inc must be less the both the max update value -and-
+                 * the size of the CQ.
+                 */
+                inc = cq->cidx_inc <= CIDXINC_MASK ? cq->cidx_inc :
+                                                     CIDXINC_MASK;
+                inc = inc <= (cq->size - 1) ? inc : (cq->size - 1);
+                if (inc == cq->cidx_inc)
+                        val = SEINTARM(se) | CIDXINC(inc) | TIMERREG(6) |
+                              INGRESSQID(cq->cqid);
+                else
+                        val = SEINTARM(0) | CIDXINC(inc) | TIMERREG(7) |
+                              INGRESSQID(cq->cqid);
+                cq->cidx_inc -= inc;
+                writel(val, cq->gts);
+        } while (cq->cidx_inc);
         return 0;
 }
 
@@ -489,11 +502,12 @@ static inline int t4_valid_cqe(struct t4_cq *cq, struct t4_cqe *cqe)
 static inline int t4_next_hw_cqe(struct t4_cq *cq, struct t4_cqe **cqe)
 {
         int ret = 0;
+        u64 bits_type_ts = be64_to_cpu(cq->queue[cq->cidx].bits_type_ts);
 
-        if (t4_valid_cqe(cq, &cq->queue[cq->cidx])) {
+        if (G_CQE_GENBIT(bits_type_ts) == cq->gen) {
                 *cqe = &cq->queue[cq->cidx];
-                cq->timestamp = CQE_TS(*cqe);
-        } else if (CQE_TS(&cq->queue[cq->cidx]) > cq->timestamp)
+                cq->timestamp = G_CQE_TS(bits_type_ts);
+        } else if (G_CQE_TS(bits_type_ts) > cq->timestamp)
                 ret = -EOVERFLOW;
         else
                 ret = -ENODATA;