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authorShiraz Saleem <shiraz.saleem@intel.com>2017-10-16 23:46:02 +0300
committerDoug Ledford <dledford@redhat.com>2017-10-18 20:28:46 +0300
commit1196923838cf1d2b7abcb9a1007eede09ad93acd (patch)
tree9c700d31070fa07ecbe5464424a8a47223f1561c /drivers/infiniband/hw/i40iw/i40iw_verbs.c
parent5b4a1a8b87fda31c1a1d44aba7e6926167610a20 (diff)
downloadlinux-1196923838cf1d2b7abcb9a1007eede09ad93acd.tar.xz
i40iw: Refactor queue depth calculation
Queue depth calculations use a mix of work requests and actual number of bytes. Consolidate all calculations using minimum WQE size to avoid confusion. Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/i40iw/i40iw_verbs.c')
-rw-r--r--drivers/infiniband/hw/i40iw/i40iw_verbs.c34
1 files changed, 8 insertions, 26 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
index 5c60de6bd999..3c6f3ce88f89 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -69,7 +69,7 @@ static int i40iw_query_device(struct ib_device *ibdev,
props->hw_ver = (u32)iwdev->sc_dev.hw_rev;
props->max_mr_size = I40IW_MAX_OUTBOUND_MESSAGE_SIZE;
props->max_qp = iwdev->max_qp - iwdev->used_qps;
- props->max_qp_wr = (I40IW_MAX_WQ_ENTRIES >> 2) - 1;
+ props->max_qp_wr = I40IW_MAX_QP_WRS;
props->max_sge = I40IW_MAX_WQ_FRAGMENT_COUNT;
props->max_cq = iwdev->max_cq - iwdev->used_cqs;
props->max_cqe = iwdev->max_cqe;
@@ -381,22 +381,6 @@ static int i40iw_dealloc_pd(struct ib_pd *ibpd)
}
/**
- * i40iw_qp_roundup - return round up qp ring size
- * @wr_ring_size: ring size to round up
- */
-static int i40iw_qp_roundup(u32 wr_ring_size)
-{
- int scount = 1;
-
- if (wr_ring_size < I40IWQP_SW_MIN_WQSIZE)
- wr_ring_size = I40IWQP_SW_MIN_WQSIZE;
-
- for (wr_ring_size--; scount <= 16; scount *= 2)
- wr_ring_size |= wr_ring_size >> scount;
- return ++wr_ring_size;
-}
-
-/**
* i40iw_get_pbl - Retrieve pbl from a list given a virtual
* address
* @va: user virtual address
@@ -515,21 +499,19 @@ static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev,
{
struct i40iw_dma_mem *mem = &iwqp->kqp.dma_mem;
u32 sqdepth, rqdepth;
- u32 sq_size, rq_size;
u8 sqshift;
u32 size;
enum i40iw_status_code status;
struct i40iw_qp_uk_init_info *ukinfo = &info->qp_uk_init_info;
- sq_size = i40iw_qp_roundup(ukinfo->sq_size + 1);
- rq_size = i40iw_qp_roundup(ukinfo->rq_size + 1);
-
- status = i40iw_get_wqe_shift(sq_size, ukinfo->max_sq_frag_cnt, ukinfo->max_inline_data, &sqshift);
+ i40iw_get_wqe_shift(ukinfo->max_sq_frag_cnt, ukinfo->max_inline_data, &sqshift);
+ status = i40iw_get_sqdepth(ukinfo->sq_size, sqshift, &sqdepth);
if (status)
return -ENOMEM;
- sqdepth = sq_size << sqshift;
- rqdepth = rq_size << I40IW_MAX_RQ_WQE_SHIFT;
+ status = i40iw_get_rqdepth(ukinfo->rq_size, I40IW_MAX_RQ_WQE_SHIFT, &rqdepth);
+ if (status)
+ return -ENOMEM;
size = sqdepth * sizeof(struct i40iw_sq_uk_wr_trk_info) + (rqdepth << 3);
iwqp->kqp.wrid_mem = kzalloc(size, GFP_KERNEL);
@@ -559,8 +541,8 @@ static int i40iw_setup_kmode_qp(struct i40iw_device *iwdev,
ukinfo->shadow_area = ukinfo->rq[rqdepth].elem;
info->shadow_area_pa = info->rq_pa + (rqdepth * I40IW_QP_WQE_MIN_SIZE);
- ukinfo->sq_size = sq_size;
- ukinfo->rq_size = rq_size;
+ ukinfo->sq_size = sqdepth >> sqshift;
+ ukinfo->rq_size = rqdepth >> I40IW_MAX_RQ_WQE_SHIFT;
ukinfo->qp_id = iwqp->ibqp.qp_num;
return 0;
}