5 files changed, 32 insertions, 33 deletions

diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index de9bcf2e6d30..0f773e78e080 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -913,14 +913,8 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries,
         /*
          * memsize must be a multiple of the page size if its a user cq.
          */
-        if (ucontext) {
+        if (ucontext)
                 memsize = roundup(memsize, PAGE_SIZE);
-                hwentries = memsize / sizeof *chp->cq.queue;
-                while (hwentries > rhp->rdev.hw_queue.t4_max_iq_size) {
-                        memsize -= PAGE_SIZE;
-                        hwentries = memsize / sizeof *chp->cq.queue;
-                }
-        }
         chp->cq.size = hwentries;
         chp->cq.memsize = memsize;
         chp->cq.vector = vector;
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 03b6fa1291bf..bda949223637 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -934,17 +934,17 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
 
         devp->rdev.hw_queue.t4_eq_status_entries =
                 devp->rdev.lldi.sge_ingpadboundary > 64 ? 2 : 1;
-        devp->rdev.hw_queue.t4_max_eq_size =
-                65520 - devp->rdev.hw_queue.t4_eq_status_entries;
-        devp->rdev.hw_queue.t4_max_iq_size = 65520 - 1;
-        devp->rdev.hw_queue.t4_max_rq_size =
-                8192 - devp->rdev.hw_queue.t4_eq_status_entries;
+        devp->rdev.hw_queue.t4_max_eq_size = 65520;
+        devp->rdev.hw_queue.t4_max_iq_size = 65520;
+        devp->rdev.hw_queue.t4_max_rq_size = 8192 -
+                devp->rdev.hw_queue.t4_eq_status_entries - 1;
         devp->rdev.hw_queue.t4_max_sq_size =
-                devp->rdev.hw_queue.t4_max_eq_size - 1;
+                devp->rdev.hw_queue.t4_max_eq_size -
+                devp->rdev.hw_queue.t4_eq_status_entries - 1;
         devp->rdev.hw_queue.t4_max_qp_depth =
-                devp->rdev.hw_queue.t4_max_rq_size - 1;
+                devp->rdev.hw_queue.t4_max_rq_size;
         devp->rdev.hw_queue.t4_max_cq_depth =
-                devp->rdev.hw_queue.t4_max_iq_size - 1;
+                devp->rdev.hw_queue.t4_max_iq_size - 2;
         devp->rdev.hw_queue.t4_stat_len =
                 devp->rdev.lldi.sge_egrstatuspagesize;
 
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 67c4a6908021..72e3b69d1b76 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -318,7 +318,7 @@ static int c4iw_query_device(struct ib_device *ibdev,
         props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
         props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
         props->max_mr_size = T4_MAX_MR_SIZE;
-        props->max_qp = T4_MAX_NUM_QP;
+        props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
         props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
         props->max_sge = T4_MAX_RECV_SGE;
         props->max_sge_rd = 1;
@@ -326,7 +326,7 @@ static int c4iw_query_device(struct ib_device *ibdev,
         props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
                                     c4iw_max_read_depth);
         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
-        props->max_cq = T4_MAX_NUM_CQ;
+        props->max_cq = dev->rdev.lldi.vr->qp.size;
         props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
         props->max_mr = c4iw_num_stags(&dev->rdev);
         props->max_pd = T4_MAX_NUM_PD;
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 0e7e0e30fba4..c158fcc02bca 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -205,9 +205,9 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq,
         }
 
         /*
-         * RQT must be a power of 2.
+         * RQT must be a power of 2 and at least 16 deep.
          */
-        wq->rq.rqt_size = roundup_pow_of_two(wq->rq.size);
+        wq->rq.rqt_size = roundup_pow_of_two(max_t(u16, wq->rq.size, 16));
         wq->rq.rqt_hwaddr = c4iw_rqtpool_alloc(rdev, wq->rq.rqt_size);
         if (!wq->rq.rqt_hwaddr) {
                 ret = -ENOMEM;
@@ -1621,13 +1621,17 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
         if (attrs->cap.max_inline_data > T4_MAX_SEND_INLINE)
                 return ERR_PTR(-EINVAL);
 
-        rqsize = roundup(attrs->cap.max_recv_wr + 1, 16);
-        if (rqsize > rhp->rdev.hw_queue.t4_max_rq_size)
+        if (attrs->cap.max_recv_wr > rhp->rdev.hw_queue.t4_max_rq_size)
                 return ERR_PTR(-E2BIG);
+        rqsize = attrs->cap.max_recv_wr + 1;
+        if (rqsize < 8)
+                rqsize = 8;
 
-        sqsize = roundup(attrs->cap.max_send_wr + 1, 16);
-        if (sqsize > rhp->rdev.hw_queue.t4_max_sq_size)
+        if (attrs->cap.max_send_wr > rhp->rdev.hw_queue.t4_max_sq_size)
                 return ERR_PTR(-E2BIG);
+        sqsize = attrs->cap.max_send_wr + 1;
+        if (sqsize < 8)
+                sqsize = 8;
 
         ucontext = pd->uobject ? to_c4iw_ucontext(pd->uobject->context) : NULL;
 
@@ -1635,19 +1639,20 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
         if (!qhp)
                 return ERR_PTR(-ENOMEM);
         qhp->wq.sq.size = sqsize;
-        qhp->wq.sq.memsize = (sqsize + 1) * sizeof *qhp->wq.sq.queue;
+        qhp->wq.sq.memsize =
+                (sqsize + rhp->rdev.hw_queue.t4_eq_status_entries) *
+                sizeof(*qhp->wq.sq.queue) + 16 * sizeof(__be64);
         qhp->wq.sq.flush_cidx = -1;
         qhp->wq.rq.size = rqsize;
-        qhp->wq.rq.memsize = (rqsize + 1) * sizeof *qhp->wq.rq.queue;
+        qhp->wq.rq.memsize =
+                (rqsize + rhp->rdev.hw_queue.t4_eq_status_entries) *
+                sizeof(*qhp->wq.rq.queue);
 
         if (ucontext) {
                 qhp->wq.sq.memsize = roundup(qhp->wq.sq.memsize, PAGE_SIZE);
                 qhp->wq.rq.memsize = roundup(qhp->wq.rq.memsize, PAGE_SIZE);
         }
 
-        PDBG("%s sqsize %u sqmemsize %zu rqsize %u rqmemsize %zu\n",
-             __func__, sqsize, qhp->wq.sq.memsize, rqsize, qhp->wq.rq.memsize);
-
         ret = create_qp(&rhp->rdev, &qhp->wq, &schp->cq, &rchp->cq,
                         ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
         if (ret)
@@ -1766,9 +1771,11 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
         qhp->ibqp.qp_num = qhp->wq.sq.qid;
         init_timer(&(qhp->timer));
         INIT_LIST_HEAD(&qhp->db_fc_entry);
-        PDBG("%s qhp %p sq_num_entries %d, rq_num_entries %d qpid 0x%0x\n",
-             __func__, qhp, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
-             qhp->wq.sq.qid);
+        PDBG("%s sq id %u size %u memsize %zu num_entries %u "
+             "rq id %u size %u memsize %zu num_entries %u\n", __func__,
+             qhp->wq.sq.qid, qhp->wq.sq.size, qhp->wq.sq.memsize,
+             attrs->cap.max_send_wr, qhp->wq.rq.qid, qhp->wq.rq.size,
+             qhp->wq.rq.memsize, attrs->cap.max_recv_wr);
         return &qhp->ibqp;
 err8:
         kfree(mm5);
diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h
index c9f7034e6647..641ab55b1d55 100644
--- a/drivers/infiniband/hw/cxgb4/t4.h
+++ b/drivers/infiniband/hw/cxgb4/t4.h
@@ -36,8 +36,6 @@
 #include "t4_msg.h"
 #include "t4fw_ri_api.h"
 
-#define T4_MAX_NUM_QP 65536
-#define T4_MAX_NUM_CQ 65536
 #define T4_MAX_NUM_PD 65536
 #define T4_MAX_NUM_STAG (1<<15)
 #define T4_MAX_MR_SIZE (~0ULL)