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Commit a4011fd4 authored by Hariprasad Shenai's avatar Hariprasad Shenai Committed by David S. Miller
Browse files

cxgb4: Add debugfs support to dump tid info 



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

Signed-off-by: default avatarHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2248b293

drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c

+68 −0
Original line number Diff line number Diff line
@@ -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 },

	};

drivers/net/ethernet/chelsio/cxgb4/sge.c

+4 −5
Original line number Diff line number Diff line
@@ -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;

drivers/net/ethernet/chelsio/cxgb4/t4_regs.h

+4 −0
Original line number Diff line number Diff line
@@ -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