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Date: Tue, 27 Jan 2015 13:47:45 +0530
From: Hariprasad Shenai <hariprasad@...lsio.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, leedom@...lsio.com, anish@...lsio.com,
nirranjan@...lsio.com, praveenm@...lsio.com,
Hariprasad Shenai <hariprasad@...lsio.com>
Subject: [PATCH net-next 1/5] cxgb4: Added support in debugfs to dump sge_qinfo
Signed-off-by: Hariprasad Shenai <hariprasad@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 2 +
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 211 ++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 4 +-
3 files changed, 215 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 24fc162..533a691 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -1029,6 +1029,8 @@ int cxgb4_t4_bar2_sge_qregs(struct adapter *adapter,
u64 *pbar2_qoffset,
unsigned int *pbar2_qid);
+unsigned int qtimer_val(const struct adapter *adap,
+ const struct sge_rspq *q);
int t4_init_sge_params(struct adapter *adapter);
int t4_init_tp_params(struct adapter *adap);
int t4_filter_field_shift(const struct adapter *adap, int filter_sel);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 714cc70..eb420e1 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -1026,6 +1026,216 @@ static const struct file_operations rss_vf_config_debugfs_fops = {
.release = seq_release_private
};
+static int sge_qinfo_show(struct seq_file *seq, void *v)
+{
+ struct adapter *adap = seq->private;
+ int eth_entries = DIV_ROUND_UP(adap->sge.ethqsets, 4);
+ int toe_entries = DIV_ROUND_UP(adap->sge.ofldqsets, 4);
+ int rdma_entries = DIV_ROUND_UP(adap->sge.rdmaqs, 4);
+ int ciq_entries = DIV_ROUND_UP(adap->sge.rdmaciqs, 4);
+ int ctrl_entries = DIV_ROUND_UP(MAX_CTRL_QUEUES, 4);
+ int i, r = (uintptr_t)v - 1;
+ int toe_idx = r - eth_entries;
+ int rdma_idx = toe_idx - toe_entries;
+ int ciq_idx = rdma_idx - rdma_entries;
+ int ctrl_idx = ciq_idx - ciq_entries;
+ int fq_idx = ctrl_idx - ctrl_entries;
+
+ if (r)
+ seq_putc(seq, '\n');
+
+#define S3(fmt_spec, s, v) \
+do { \
+ seq_printf(seq, "%-12s", s); \
+ for (i = 0; i < n; ++i) \
+ seq_printf(seq, " %16" fmt_spec, v); \
+ seq_putc(seq, '\n'); \
+} while (0)
+#define S(s, v) S3("s", s, v)
+#define T(s, v) S3("u", s, tx[i].v)
+#define R(s, v) S3("u", s, rx[i].v)
+
+ if (r < eth_entries) {
+ int base_qset = r * 4;
+ const struct sge_eth_rxq *rx = &adap->sge.ethrxq[base_qset];
+ const struct sge_eth_txq *tx = &adap->sge.ethtxq[base_qset];
+ int n = min(4, adap->sge.ethqsets - 4 * r);
+
+ S("QType:", "Ethernet");
+ S("Interface:",
+ rx[i].rspq.netdev ? rx[i].rspq.netdev->name : "N/A");
+ T("TxQ ID:", q.cntxt_id);
+ T("TxQ size:", q.size);
+ T("TxQ inuse:", q.in_use);
+ T("TxQ CIDX:", q.cidx);
+ T("TxQ PIDX:", q.pidx);
+#ifdef CONFIG_CXGB4_DCB
+ T("DCB Prio:", dcb_prio);
+ S3("u", "DCB PGID:",
+ (ethqset2pinfo(adap, base_qset + i)->dcb.pgid >>
+ 4*(7-tx[i].dcb_prio)) & 0xf);
+ S3("u", "DCB PFC:",
+ (ethqset2pinfo(adap, base_qset + i)->dcb.pfcen >>
+ 1*(7-tx[i].dcb_prio)) & 0x1);
+#endif
+ R("RspQ ID:", rspq.abs_id);
+ R("RspQ size:", rspq.size);
+ R("RspQE size:", rspq.iqe_len);
+ R("RspQ CIDX:", rspq.cidx);
+ R("RspQ Gen:", rspq.gen);
+ S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
+ S3("u", "Intr pktcnt:",
+ adap->sge.counter_val[rx[i].rspq.pktcnt_idx]);
+ R("FL ID:", fl.cntxt_id);
+ R("FL size:", fl.size - 8);
+ R("FL pend:", fl.pend_cred);
+ R("FL avail:", fl.avail);
+ R("FL PIDX:", fl.pidx);
+ R("FL CIDX:", fl.cidx);
+ } else if (toe_idx < toe_entries) {
+ const struct sge_ofld_rxq *rx = &adap->sge.ofldrxq[toe_idx * 4];
+ const struct sge_ofld_txq *tx = &adap->sge.ofldtxq[toe_idx * 4];
+ int n = min(4, adap->sge.ofldqsets - 4 * toe_idx);
+
+ S("QType:", "TOE");
+ T("TxQ ID:", q.cntxt_id);
+ T("TxQ size:", q.size);
+ T("TxQ inuse:", q.in_use);
+ T("TxQ CIDX:", q.cidx);
+ T("TxQ PIDX:", q.pidx);
+ R("RspQ ID:", rspq.abs_id);
+ R("RspQ size:", rspq.size);
+ R("RspQE size:", rspq.iqe_len);
+ R("RspQ CIDX:", rspq.cidx);
+ R("RspQ Gen:", rspq.gen);
+ S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
+ S3("u", "Intr pktcnt:",
+ adap->sge.counter_val[rx[i].rspq.pktcnt_idx]);
+ R("FL ID:", fl.cntxt_id);
+ R("FL size:", fl.size - 8);
+ R("FL pend:", fl.pend_cred);
+ R("FL avail:", fl.avail);
+ R("FL PIDX:", fl.pidx);
+ R("FL CIDX:", fl.cidx);
+ } else if (rdma_idx < rdma_entries) {
+ const struct sge_ofld_rxq *rx =
+ &adap->sge.rdmarxq[rdma_idx * 4];
+ int n = min(4, adap->sge.rdmaqs - 4 * rdma_idx);
+
+ S("QType:", "RDMA-CPL");
+ R("RspQ ID:", rspq.abs_id);
+ R("RspQ size:", rspq.size);
+ R("RspQE size:", rspq.iqe_len);
+ R("RspQ CIDX:", rspq.cidx);
+ R("RspQ Gen:", rspq.gen);
+ S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
+ S3("u", "Intr pktcnt:",
+ adap->sge.counter_val[rx[i].rspq.pktcnt_idx]);
+ R("FL ID:", fl.cntxt_id);
+ R("FL size:", fl.size - 8);
+ R("FL pend:", fl.pend_cred);
+ R("FL avail:", fl.avail);
+ R("FL PIDX:", fl.pidx);
+ R("FL CIDX:", fl.cidx);
+ } else if (ciq_idx < ciq_entries) {
+ const struct sge_ofld_rxq *rx = &adap->sge.rdmaciq[ciq_idx * 4];
+ int n = min(4, adap->sge.rdmaciqs - 4 * ciq_idx);
+
+ S("QType:", "RDMA-CIQ");
+ R("RspQ ID:", rspq.abs_id);
+ R("RspQ size:", rspq.size);
+ R("RspQE size:", rspq.iqe_len);
+ R("RspQ CIDX:", rspq.cidx);
+ R("RspQ Gen:", rspq.gen);
+ S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
+ S3("u", "Intr pktcnt:",
+ adap->sge.counter_val[rx[i].rspq.pktcnt_idx]);
+ } else if (ctrl_idx < ctrl_entries) {
+ const struct sge_ctrl_txq *tx = &adap->sge.ctrlq[ctrl_idx * 4];
+ int n = min(4, adap->params.nports - 4 * ctrl_idx);
+
+ S("QType:", "Control");
+ T("TxQ ID:", q.cntxt_id);
+ T("TxQ size:", q.size);
+ T("TxQ inuse:", q.in_use);
+ T("TxQ CIDX:", q.cidx);
+ T("TxQ PIDX:", q.pidx);
+ } else if (fq_idx == 0) {
+ const struct sge_rspq *evtq = &adap->sge.fw_evtq;
+
+ seq_printf(seq, "%-12s %16s\n", "QType:", "FW event queue");
+ seq_printf(seq, "%-12s %16u\n", "RspQ ID:", evtq->abs_id);
+ seq_printf(seq, "%-12s %16u\n", "RspQ size:", evtq->size);
+ seq_printf(seq, "%-12s %16u\n", "RspQE size:", evtq->iqe_len);
+ seq_printf(seq, "%-12s %16u\n", "RspQ CIDX:", evtq->cidx);
+ seq_printf(seq, "%-12s %16u\n", "RspQ Gen:", evtq->gen);
+ seq_printf(seq, "%-12s %16u\n", "Intr delay:",
+ qtimer_val(adap, evtq));
+ seq_printf(seq, "%-12s %16u\n", "Intr pktcnt:",
+ adap->sge.counter_val[evtq->pktcnt_idx]);
+ }
+#undef R
+#undef T
+#undef S
+#undef S3
+return 0;
+}
+
+static int sge_queue_entries(const struct adapter *adap)
+{
+ return DIV_ROUND_UP(adap->sge.ethqsets, 4) +
+ DIV_ROUND_UP(adap->sge.ofldqsets, 4) +
+ DIV_ROUND_UP(adap->sge.rdmaqs, 4) +
+ DIV_ROUND_UP(adap->sge.rdmaciqs, 4) +
+ DIV_ROUND_UP(MAX_CTRL_QUEUES, 4) + 1;
+}
+
+static void *sge_queue_start(struct seq_file *seq, loff_t *pos)
+{
+ int entries = sge_queue_entries(seq->private);
+
+ return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
+}
+
+static void sge_queue_stop(struct seq_file *seq, void *v)
+{
+}
+
+static void *sge_queue_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ int entries = sge_queue_entries(seq->private);
+
+ ++*pos;
+ return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
+}
+
+static const struct seq_operations sge_qinfo_seq_ops = {
+ .start = sge_queue_start,
+ .next = sge_queue_next,
+ .stop = sge_queue_stop,
+ .show = sge_qinfo_show
+};
+
+static int sge_qinfo_open(struct inode *inode, struct file *file)
+{
+ int res = seq_open(file, &sge_qinfo_seq_ops);
+
+ if (!res) {
+ struct seq_file *seq = file->private_data;
+
+ seq->private = inode->i_private;
+ }
+ return res;
+}
+
+static const struct file_operations sge_qinfo_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = sge_qinfo_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
int mem_open(struct inode *inode, struct file *file)
{
unsigned int mem;
@@ -1135,6 +1345,7 @@ int t4_setup_debugfs(struct adapter *adap)
{ "rss_key", &rss_key_debugfs_fops, S_IRUSR, 0 },
{ "rss_pf_config", &rss_pf_config_debugfs_fops, S_IRUSR, 0 },
{ "rss_vf_config", &rss_vf_config_debugfs_fops, S_IRUSR, 0 },
+ { "sge_qinfo", &sge_qinfo_debugfs_fops, S_IRUSR, 0 },
#if IS_ENABLED(CONFIG_IPV6)
{ "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 },
#endif
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 12c1a3f..c27dcd9 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -2500,8 +2500,8 @@ static int closest_thres(const struct sge *s, int thres)
/*
* Return a queue's interrupt hold-off time in us. 0 means no timer.
*/
-static unsigned int qtimer_val(const struct adapter *adap,
- const struct sge_rspq *q)
+unsigned int qtimer_val(const struct adapter *adap,
+ const struct sge_rspq *q)
{
unsigned int idx = q->intr_params >> 1;
--
1.7.1
--
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