From a64b02d5301cc7da7ac33ae3b3531ab1262d196e Mon Sep 17 00:00:00 2001 From: Manish Chopra Date: Tue, 26 Apr 2016 10:56:10 -0400 Subject: qed: Add PF min bandwidth configuration support This patch adds support for PF minimum bandwidth update or configuration notified by management firmware. Signed-off-by: Manish Chopra Signed-off-by: Yuval Mintz Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_dev.c | 71 +++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) (limited to 'drivers/net/ethernet/qlogic/qed/qed_dev.c') diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c index 4e99108d9427..b500c86d7d06 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -220,9 +220,13 @@ static int qed_init_qm_info(struct qed_hwfn *p_hwfn) qm_info->start_vport = (u8)RESC_START(p_hwfn, QED_VPORT); + for (i = 0; i < qm_info->num_vports; i++) + qm_info->qm_vport_params[i].vport_wfq = 1; + qm_info->pf_wfq = 0; qm_info->pf_rl = 0; qm_info->vport_rl_en = 1; + qm_info->vport_wfq_en = 1; return 0; @@ -1841,3 +1845,70 @@ int qed_configure_pf_max_bandwidth(struct qed_dev *cdev, u8 max_bw) return rc; } + +int __qed_configure_pf_min_bandwidth(struct qed_hwfn *p_hwfn, + struct qed_ptt *p_ptt, + struct qed_mcp_link_state *p_link, + u8 min_bw) +{ + int rc = 0; + + p_hwfn->mcp_info->func_info.bandwidth_min = min_bw; + p_hwfn->qm_info.pf_wfq = min_bw; + + if (!p_link->line_speed) + return rc; + + p_link->min_pf_rate = (p_link->line_speed * min_bw) / 100; + + rc = qed_init_pf_wfq(p_hwfn, p_ptt, p_hwfn->rel_pf_id, min_bw); + + DP_VERBOSE(p_hwfn, NETIF_MSG_LINK, + "Configured MIN bandwidth to be %d Mb/sec\n", + p_link->min_pf_rate); + + return rc; +} + +/* Main API to configure PF min bandwidth where bw range is [1-100] */ +int qed_configure_pf_min_bandwidth(struct qed_dev *cdev, u8 min_bw) +{ + int i, rc = -EINVAL; + + if (min_bw < 1 || min_bw > 100) { + DP_NOTICE(cdev, "PF min bw valid range is [1-100]\n"); + return rc; + } + + for_each_hwfn(cdev, i) { + struct qed_hwfn *p_hwfn = &cdev->hwfns[i]; + struct qed_hwfn *p_lead = QED_LEADING_HWFN(cdev); + struct qed_mcp_link_state *p_link; + struct qed_ptt *p_ptt; + + p_link = &p_lead->mcp_info->link_output; + + p_ptt = qed_ptt_acquire(p_hwfn); + if (!p_ptt) + return -EBUSY; + + rc = __qed_configure_pf_min_bandwidth(p_hwfn, p_ptt, + p_link, min_bw); + if (rc) { + qed_ptt_release(p_hwfn, p_ptt); + return rc; + } + + if (p_link->min_pf_rate) { + u32 min_rate = p_link->min_pf_rate; + + rc = __qed_configure_vp_wfq_on_link_change(p_hwfn, + p_ptt, + min_rate); + } + + qed_ptt_release(p_hwfn, p_ptt); + } + + return rc; +} -- cgit v1.2.3