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Date: Mon, 2 Feb 2015 20:23:06 +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 5/8] cxgb4: Add support to dump HW port loopback stats in debugfs
Signed-off-by: Hariprasad Shenai <hariprasad@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 1 +
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 38 +++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 48 ++++++++++++++++++++
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 1 +
4 files changed, 88 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index 72a948c..e4e0199 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
@@ -1059,6 +1059,7 @@ int t4_cim_read_la(struct adapter *adap, u32 *la_buf, unsigned int *wrptr);
void t4_read_cimq_cfg(struct adapter *adap, u16 *base, u16 *size, u16 *thres);
const char *t4_get_port_type_description(enum fw_port_type port_type);
void t4_get_port_stats(struct adapter *adap, int idx, struct port_stats *p);
+void t4_get_lb_stats(struct adapter *adap, int idx, struct lb_port_stats *p);
void t4_read_mtu_tbl(struct adapter *adap, u16 *mtus, u8 *mtu_log);
void t4_tp_wr_bits_indirect(struct adapter *adap, unsigned int addr,
unsigned int mask, unsigned int val);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 83e2932..5341a00 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -1207,6 +1207,43 @@ static int sensors_show(struct seq_file *seq, void *v)
DEFINE_SIMPLE_DEBUGFS_FILE(sensors);
+static int lb_stats_show(struct seq_file *seq, void *v)
+{
+ static const char * const stat_name[] = {
+ "OctetsOK:", "FramesOK:", "BcastFrames:", "McastFrames:",
+ "UcastFrames:", "ErrorFrames:", "Frames64:", "Frames65To127:",
+ "Frames128To255:", "Frames256To511:", "Frames512To1023:",
+ "Frames1024To1518:", "Frames1519ToMax:", "FramesDropped:",
+ "BG0FramesDropped:", "BG1FramesDropped:", "BG2FramesDropped:",
+ "BG3FramesDropped:", "BG0FramesTrunc:", "BG1FramesTrunc:",
+ "BG2FramesTrunc:", "BG3FramesTrunc:"
+ };
+
+ int i, j;
+ u64 *p0, *p1;
+ struct lb_port_stats s[2];
+
+ memset(s, 0, sizeof(s));
+
+ for (i = 0; i < 4; i += 2) {
+ t4_get_lb_stats(seq->private, i, &s[0]);
+ t4_get_lb_stats(seq->private, i + 1, &s[1]);
+
+ p0 = &s[0].octets;
+ p1 = &s[1].octets;
+ seq_printf(seq, "%s Loopback %u "
+ " Loopback %u\n", i == 0 ? "" : "\n", i, i + 1);
+
+ for (j = 0; j < ARRAY_SIZE(stat_name); j++)
+ seq_printf(seq, "%-17s %20llu %20llu\n", stat_name[j],
+ (unsigned long long)*p0++,
+ (unsigned long long)*p1++);
+ }
+ return 0;
+}
+
+DEFINE_SIMPLE_DEBUGFS_FILE(lb_stats);
+
#if IS_ENABLED(CONFIG_IPV6)
static int clip_tbl_open(struct inode *inode, struct file *file)
{
@@ -1989,6 +2026,7 @@ int t4_setup_debugfs(struct adapter *adap)
{ "tp_la", &tp_la_fops, S_IRUSR, 0 },
{ "ulprx_la", &ulprx_la_fops, S_IRUSR, 0 },
{ "sensors", &sensors_debugfs_fops, S_IRUSR, 0 },
+ { "lb_stats", &lb_stats_debugfs_fops, S_IRUSR, 0 },
{ "pm_stats", &pm_stats_debugfs_fops, S_IRUSR, 0 },
#if IS_ENABLED(CONFIG_IPV6)
{ "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 },
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 9938f2a..2603b64 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -2813,6 +2813,54 @@ int t4_wol_pat_enable(struct adapter *adap, unsigned int port, unsigned int map,
return 0;
}
+/**
+ * t4_get_lb_stats - collect loopback port statistics
+ * @adap: the adapter
+ * @idx: the loopback port index
+ * @p: the stats structure to fill
+ *
+ * Return HW statistics for the given loopback port.
+ */
+void t4_get_lb_stats(struct adapter *adap, int idx, struct lb_port_stats *p)
+{
+ u32 bgmap = get_mps_bg_map(adap, idx);
+
+#define GET_STAT(name) \
+ t4_read_reg64(adap, \
+ (is_t4(adap->params.chip) ? \
+ PORT_REG(idx, MPS_PORT_STAT_LB_PORT_##name##_L) : \
+ T5_PORT_REG(idx, MPS_PORT_STAT_LB_PORT_##name##_L)))
+#define GET_STAT_COM(name) t4_read_reg64(adap, MPS_STAT_##name##_L)
+
+ p->octets = GET_STAT(BYTES);
+ p->frames = GET_STAT(FRAMES);
+ p->bcast_frames = GET_STAT(BCAST);
+ p->mcast_frames = GET_STAT(MCAST);
+ p->ucast_frames = GET_STAT(UCAST);
+ p->error_frames = GET_STAT(ERROR);
+
+ p->frames_64 = GET_STAT(64B);
+ p->frames_65_127 = GET_STAT(65B_127B);
+ p->frames_128_255 = GET_STAT(128B_255B);
+ p->frames_256_511 = GET_STAT(256B_511B);
+ p->frames_512_1023 = GET_STAT(512B_1023B);
+ p->frames_1024_1518 = GET_STAT(1024B_1518B);
+ p->frames_1519_max = GET_STAT(1519B_MAX);
+ p->drop = GET_STAT(DROP_FRAMES);
+
+ p->ovflow0 = (bgmap & 1) ? GET_STAT_COM(RX_BG_0_LB_DROP_FRAME) : 0;
+ p->ovflow1 = (bgmap & 2) ? GET_STAT_COM(RX_BG_1_LB_DROP_FRAME) : 0;
+ p->ovflow2 = (bgmap & 4) ? GET_STAT_COM(RX_BG_2_LB_DROP_FRAME) : 0;
+ p->ovflow3 = (bgmap & 8) ? GET_STAT_COM(RX_BG_3_LB_DROP_FRAME) : 0;
+ p->trunc0 = (bgmap & 1) ? GET_STAT_COM(RX_BG_0_LB_TRUNC_FRAME) : 0;
+ p->trunc1 = (bgmap & 2) ? GET_STAT_COM(RX_BG_1_LB_TRUNC_FRAME) : 0;
+ p->trunc2 = (bgmap & 4) ? GET_STAT_COM(RX_BG_2_LB_TRUNC_FRAME) : 0;
+ p->trunc3 = (bgmap & 8) ? GET_STAT_COM(RX_BG_3_LB_TRUNC_FRAME) : 0;
+
+#undef GET_STAT
+#undef GET_STAT_COM
+}
+
/* t4_mk_filtdelwr - create a delete filter WR
* @ftid: the filter ID
* @wr: the filter work request to populate
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
index 3f18d5c..c91b64b 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
@@ -1566,6 +1566,7 @@
#define MPS_PORT_STAT_LB_PORT_1519B_MAX_L 0x520
#define MPS_PORT_STAT_LB_PORT_1519B_MAX_H 0x524
#define MPS_PORT_STAT_LB_PORT_DROP_FRAMES 0x528
+#define MPS_PORT_STAT_LB_PORT_DROP_FRAMES_L 0x528
#define MPS_PORT_STAT_RX_PORT_BYTES_L 0x540
#define MPS_PORT_STAT_RX_PORT_BYTES_H 0x544
#define MPS_PORT_STAT_RX_PORT_FRAMES_L 0x548
--
1.7.1
--
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