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| author | Ram Amrani <Ram.Amrani@cavium.com> | 2017-04-03 12:21:13 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-03 19:16:37 -0700 |
| commit | f9dc4d1f0d6f75c102ee13c0a939d9ae880a3c1e (patch) | |
| tree | 145c16efd429fda35b7646c89df8ed2edd290ae2 /drivers/net/ethernet/qlogic/qed/qed_dev.c | |
| parent | 5f8cb033f4c814760c9f7f2345278111d06afe47 (diff) | |
| download | linux-f9dc4d1f0d6f75c102ee13c0a939d9ae880a3c1e.tar.gz linux-f9dc4d1f0d6f75c102ee13c0a939d9ae880a3c1e.tar.bz2 linux-f9dc4d1f0d6f75c102ee13c0a939d9ae880a3c1e.zip | |
qed: Manage with less memory regions for RoCE
It's possible some configurations would prevent driver from utilizing
all the Memory Regions due to a lack of ILT lines.
In such a case, calculate how many memory regions would have to be
dropped due to limit, and manage without those.
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_dev.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_dev.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c index b48c80ec4e5b..249878533fd9 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -848,8 +848,10 @@ int qed_resc_alloc(struct qed_dev *cdev) #ifdef CONFIG_QED_LL2 struct qed_ll2_info *p_ll2_info; #endif + u32 rdma_tasks, excess_tasks; struct qed_consq *p_consq; struct qed_eq *p_eq; + u32 line_count; int i, rc = 0; if (IS_VF(cdev)) @@ -871,7 +873,7 @@ int qed_resc_alloc(struct qed_dev *cdev) /* Set the HW cid/tid numbers (in the contest manager) * Must be done prior to any further computations. */ - rc = qed_cxt_set_pf_params(p_hwfn); + rc = qed_cxt_set_pf_params(p_hwfn, RDMA_MAX_TIDS); if (rc) goto alloc_err; @@ -883,9 +885,32 @@ int qed_resc_alloc(struct qed_dev *cdev) qed_init_qm_info(p_hwfn); /* Compute the ILT client partition */ - rc = qed_cxt_cfg_ilt_compute(p_hwfn); - if (rc) - goto alloc_err; + rc = qed_cxt_cfg_ilt_compute(p_hwfn, &line_count); + if (rc) { + DP_NOTICE(p_hwfn, + "too many ILT lines; re-computing with less lines\n"); + /* In case there are not enough ILT lines we reduce the + * number of RDMA tasks and re-compute. + */ + excess_tasks = + qed_cxt_cfg_ilt_compute_excess(p_hwfn, line_count); + if (!excess_tasks) + goto alloc_err; + + rdma_tasks = RDMA_MAX_TIDS - excess_tasks; + rc = qed_cxt_set_pf_params(p_hwfn, rdma_tasks); + if (rc) + goto alloc_err; + + rc = qed_cxt_cfg_ilt_compute(p_hwfn, &line_count); + if (rc) { + DP_ERR(p_hwfn, + "failed ILT compute. Requested too many lines: %u\n", + line_count); + + goto alloc_err; + } + } /* CID map / ILT shadow table / T2 * The talbes sizes are determined by the computations above |