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cxgb4: Add debugfs support to dump tid info

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Add debugfs support to dump tid info like stid, sftid, tids, atid and
hwtids

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2015-08-12 16:55:07 +05:30 committed by David S. Miller
parent 2248b29349
commit a4011fd470
3 changed files with 76 additions and 5 deletions
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68
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
View File

@ -2257,6 +2257,73 @@ static const struct file_operations mem_debugfs_fops = {
.llseek = default_llseek,
};
static int tid_info_show(struct seq_file *seq, void *v)
{
struct adapter *adap = seq->private;
const struct tid_info *t = &adap->tids;
enum chip_type chip = CHELSIO_CHIP_VERSION(adap->params.chip);
if (t4_read_reg(adap, LE_DB_CONFIG_A) & HASHEN_F) {
unsigned int sb;
if (chip <= CHELSIO_T5)
sb = t4_read_reg(adap, LE_DB_SERVER_INDEX_A) / 4;
else
sb = t4_read_reg(adap, LE_DB_SRVR_START_INDEX_A);
if (sb) {
seq_printf(seq, "TID range: 0..%u/%u..%u", sb - 1,
adap->tids.hash_base,
t->ntids - 1);
seq_printf(seq, ", in use: %u/%u\n",
atomic_read(&t->tids_in_use),
atomic_read(&t->hash_tids_in_use));
} else if (adap->flags & FW_OFLD_CONN) {
seq_printf(seq, "TID range: %u..%u/%u..%u",
t->aftid_base,
t->aftid_end,
adap->tids.hash_base,
t->ntids - 1);
seq_printf(seq, ", in use: %u/%u\n",
atomic_read(&t->tids_in_use),
atomic_read(&t->hash_tids_in_use));
} else {
seq_printf(seq, "TID range: %u..%u",
adap->tids.hash_base,
t->ntids - 1);
seq_printf(seq, ", in use: %u\n",
atomic_read(&t->hash_tids_in_use));
}
} else if (t->ntids) {
seq_printf(seq, "TID range: 0..%u", t->ntids - 1);
seq_printf(seq, ", in use: %u\n",
atomic_read(&t->tids_in_use));
}
if (t->nstids)
seq_printf(seq, "STID range: %u..%u, in use: %u\n",
(!t->stid_base &&
(chip <= CHELSIO_T5)) ?
t->stid_base + 1 : t->stid_base,
t->stid_base + t->nstids - 1, t->stids_in_use);
if (t->natids)
seq_printf(seq, "ATID range: 0..%u, in use: %u\n",
t->natids - 1, t->atids_in_use);
seq_printf(seq, "FTID range: %u..%u\n", t->ftid_base,
t->ftid_base + t->nftids - 1);
if (t->nsftids)
seq_printf(seq, "SFTID range: %u..%u in use: %u\n",
t->sftid_base, t->sftid_base + t->nsftids - 2,
t->sftids_in_use);
if (t->ntids)
seq_printf(seq, "HW TID usage: %u IP users, %u IPv6 users\n",
t4_read_reg(adap, LE_DB_ACT_CNT_IPV4_A),
t4_read_reg(adap, LE_DB_ACT_CNT_IPV6_A));
return 0;
}
DEFINE_SIMPLE_DEBUGFS_FILE(tid_info);
static void add_debugfs_mem(struct adapter *adap, const char *name,
unsigned int idx, unsigned int size_mb)
{
@ -2670,6 +2737,7 @@ int t4_setup_debugfs(struct adapter *adap)
#if IS_ENABLED(CONFIG_IPV6)
{ "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 },
#endif
{ "tids", &tid_info_debugfs_fops, S_IRUSR, 0},
{ "blocked_fl", &blocked_fl_fops, S_IRUSR | S_IWUSR, 0 },
{ "meminfo", &meminfo_fops, S_IRUSR, 0 },
};

9
drivers/net/ethernet/chelsio/cxgb4/sge.c
View File

@ -1424,18 +1424,17 @@ static void restart_ctrlq(unsigned long data)
struct fw_wr_hdr *wr;
unsigned int ndesc = skb->priority; /* previously saved */
/*
* Write descriptors and free skbs outside the lock to limit
written += ndesc;
/* Write descriptors and free skbs outside the lock to limit
* wait times. q->full is still set so new skbs will be queued.
*/
wr = (struct fw_wr_hdr *)&q->q.desc[q->q.pidx];
txq_advance(&q->q, ndesc);
spin_unlock(&q->sendq.lock);
wr = (struct fw_wr_hdr *)&q->q.desc[q->q.pidx];
inline_tx_skb(skb, &q->q, wr);
kfree_skb(skb);
written += ndesc;
txq_advance(&q->q, ndesc);
if (unlikely(txq_avail(&q->q) < TXQ_STOP_THRES)) {
unsigned long old = q->q.stops;

4
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
View File

@ -2732,6 +2732,10 @@
#define T6_LIPMISS_F T6_LIPMISS_V(1U)
#define LE_DB_CONFIG_A 0x19c04
#define LE_DB_SERVER_INDEX_A 0x19c18
#define LE_DB_SRVR_START_INDEX_A 0x19c18
#define LE_DB_ACT_CNT_IPV4_A 0x19c20
#define LE_DB_ACT_CNT_IPV6_A 0x19c24
#define LE_DB_HASH_TID_BASE_A 0x19c30
#define LE_DB_HASH_TBL_BASE_ADDR_A 0x19c30
#define LE_DB_INT_CAUSE_A 0x19c3c