netdev - [PATCH net-next 2/2] cxgb4: move Tx/Rx free pages collection to common code

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Date:   Tue, 24 Jul 2018 20:17:10 +0530
From:   Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, ganeshgr@...lsio.com, nirranjan@...lsio.com,
        indranil@...lsio.com,
        Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
Subject: [PATCH net-next 2/2] cxgb4: move Tx/Rx free pages collection to common code

This information needs to be collected in vmcore device dump as well.
So, move to common code.

Fixes: fa145d5dfd61 ("cxgb4: display number of rx and tx pages free")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@...lsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@...lsio.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h  |  2 ++
 drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c     | 10 ++++++++++
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 11 ++---------
 3 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h b/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h
index 84e0e71d9ad5..36d25883d123 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h
@@ -140,6 +140,8 @@ struct cudbg_meminfo {
 	u32 loopback_used[NCHAN];
 	u32 loopback_alloc[NCHAN];
 	u32 p_structs_free_cnt;
+	u32 free_rx_cnt;
+	u32 free_tx_cnt;
 };
 
 struct cudbg_cim_pif_la {
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
index e3ad733f690a..d97e0d7e541a 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
@@ -349,6 +349,11 @@ int cudbg_fill_meminfo(struct adapter *padap,
 	meminfo_buff->up_extmem2_hi = hi;
 
 	lo = t4_read_reg(padap, TP_PMM_RX_MAX_PAGE_A);
+	for (i = 0, meminfo_buff->free_rx_cnt = 0; i < 2; i++)
+		meminfo_buff->free_rx_cnt +=
+			FREERXPAGECOUNT_G(t4_read_reg(padap,
+						      TP_FLM_FREE_RX_CNT_A));
+
 	meminfo_buff->rx_pages_data[0] =  PMRXMAXPAGE_G(lo);
 	meminfo_buff->rx_pages_data[1] =
 		t4_read_reg(padap, TP_PMM_RX_PAGE_SIZE_A) >> 10;
@@ -356,6 +361,11 @@ int cudbg_fill_meminfo(struct adapter *padap,
 
 	lo = t4_read_reg(padap, TP_PMM_TX_MAX_PAGE_A);
 	hi = t4_read_reg(padap, TP_PMM_TX_PAGE_SIZE_A);
+	for (i = 0, meminfo_buff->free_tx_cnt = 0; i < 4; i++)
+		meminfo_buff->free_tx_cnt +=
+			FREETXPAGECOUNT_G(t4_read_reg(padap,
+						      TP_FLM_FREE_TX_CNT_A));
+
 	meminfo_buff->tx_pages_data[0] = PMTXMAXPAGE_G(lo);
 	meminfo_buff->tx_pages_data[1] =
 		hi >= (1 << 20) ? (hi >> 20) : (hi >> 10);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 218ee8e14249..2320f7829a6b 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -2858,7 +2858,6 @@ static int meminfo_show(struct seq_file *seq, void *v)
 {
 	static const char * const memory[] = { "EDC0:", "EDC1:", "MC:",
 					       "MC0:", "MC1:", "HMA:"};
-	unsigned int free_rx_cnt, free_tx_cnt;
 	struct adapter *adap = seq->private;
 	struct cudbg_meminfo meminfo;
 	int i, rc;
@@ -2890,18 +2889,12 @@ static int meminfo_show(struct seq_file *seq, void *v)
 	mem_region_show(seq, "uP Extmem2:", meminfo.up_extmem2_lo,
 			meminfo.up_extmem2_hi);
 
-	for (i = 0, free_rx_cnt = 0; i < 2; i++)
-		free_rx_cnt += FREERXPAGECOUNT_G
-				      (t4_read_reg(adap, TP_FLM_FREE_RX_CNT_A));
 	seq_printf(seq, "\n%u Rx pages (%u free) of size %uKiB for %u channels\n",
-		   meminfo.rx_pages_data[0], free_rx_cnt,
+		   meminfo.rx_pages_data[0], meminfo.free_rx_cnt,
 		   meminfo.rx_pages_data[1], meminfo.rx_pages_data[2]);
 
-	for (i = 0, free_tx_cnt = 0; i < 4; i++)
-		free_tx_cnt += FREETXPAGECOUNT_G
-				      (t4_read_reg(adap, TP_FLM_FREE_TX_CNT_A));
 	seq_printf(seq, "%u Tx pages (%u free) of size %u%ciB for %u channels\n",
-		   meminfo.tx_pages_data[0], free_tx_cnt,
+		   meminfo.tx_pages_data[0], meminfo.free_tx_cnt,
 		   meminfo.tx_pages_data[1], meminfo.tx_pages_data[2],
 		   meminfo.tx_pages_data[3]);
 
-- 
2.14.1