diff mbox series

[net-next,v4,07/12] net: dsa: rzn1-a5psw: add statistics support

Message ID 20220509131900.7840-8-clement.leger@bootlin.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series add support for Renesas RZ/N1 ethernet subsystem devices | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 254 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Clément Léger May 9, 2022, 1:18 p.m. UTC 
Add statistics support to the rzn1-a5psw driver by implementing the
following dsa_switch_ops callbacks:
- get_sset_count()
- get_strings()
- get_ethtool_stats()
- get_eth_mac_stats()
- get_eth_ctrl_stats()
- get_rmon_stats()

Signed-off-by: Clément Léger <clement.leger@bootlin.com>
---
 drivers/net/dsa/rzn1_a5psw.c | 178 +++++++++++++++++++++++++++++++++++
 drivers/net/dsa/rzn1_a5psw.h |  46 ++++++++-
 2 files changed, 223 insertions(+), 1 deletion(-)

Comments

Florian Fainelli May 10, 2022, 4:32 p.m. UTC | #1 
On 5/9/22 06:18, Clément Léger wrote:
> Add statistics support to the rzn1-a5psw driver by implementing the
> following dsa_switch_ops callbacks:
> - get_sset_count()
> - get_strings()
> - get_ethtool_stats()
> - get_eth_mac_stats()
> - get_eth_ctrl_stats()
> - get_rmon_stats()
> 
> Signed-off-by: Clément Léger <clement.leger@bootlin.com>
> ---
>   drivers/net/dsa/rzn1_a5psw.c | 178 +++++++++++++++++++++++++++++++++++
>   drivers/net/dsa/rzn1_a5psw.h |  46 ++++++++-
>   2 files changed, 223 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/dsa/rzn1_a5psw.c b/drivers/net/dsa/rzn1_a5psw.c
> index 1e2fac80f3e0..46ba25672593 100644
> --- a/drivers/net/dsa/rzn1_a5psw.c
> +++ b/drivers/net/dsa/rzn1_a5psw.c
> @@ -17,6 +17,61 @@
>   
>   #include "rzn1_a5psw.h"
>   
> +struct a5psw_stats {
> +	u16 offset;
> +	const char name[ETH_GSTRING_LEN];
> +};
> +
> +#define STAT_DESC(_offset, _name) {.offset = _offset, .name = _name}

You can build a more compact representation as long as you keep the 
offset constant and the name in sync, the attached patch and leverage 
the __stringify() macro to construct the name field:

-#define STAT_DESC(_offset, _name) {.offset = _offset, .name = _name}
+#define STAT_DESC(_offset) {   \
+       .offset = A5PSW_##_offset,      \
+       .name = __stringify(_offset),   \
+}

The attached patch does the conversion if you want to fixup into your 
commit.
Clément Léger May 11, 2022, 7:06 a.m. UTC | #2 
Le Tue, 10 May 2022 09:32:53 -0700,
Florian Fainelli <f.fainelli@gmail.com> a écrit :

> On 5/9/22 06:18, Clément Léger wrote:
> > Add statistics support to the rzn1-a5psw driver by implementing the
> > following dsa_switch_ops callbacks:
> > - get_sset_count()
> > - get_strings()
> > - get_ethtool_stats()
> > - get_eth_mac_stats()
> > - get_eth_ctrl_stats()
> > - get_rmon_stats()
> > 
> > Signed-off-by: Clément Léger <clement.leger@bootlin.com>
> > ---
> >   drivers/net/dsa/rzn1_a5psw.c | 178
> > +++++++++++++++++++++++++++++++++++ drivers/net/dsa/rzn1_a5psw.h |
> > 46 ++++++++- 2 files changed, 223 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/net/dsa/rzn1_a5psw.c
> > b/drivers/net/dsa/rzn1_a5psw.c index 1e2fac80f3e0..46ba25672593
> > 100644 --- a/drivers/net/dsa/rzn1_a5psw.c
> > +++ b/drivers/net/dsa/rzn1_a5psw.c
> > @@ -17,6 +17,61 @@
> >   
> >   #include "rzn1_a5psw.h"
> >   
> > +struct a5psw_stats {
> > +	u16 offset;
> > +	const char name[ETH_GSTRING_LEN];
> > +};
> > +
> > +#define STAT_DESC(_offset, _name) {.offset = _offset, .name =
> > _name}  
> 
> You can build a more compact representation as long as you keep the 
> offset constant and the name in sync, the attached patch and leverage 
> the __stringify() macro to construct the name field:
> 
> -#define STAT_DESC(_offset, _name) {.offset = _offset, .name = _name}
> +#define STAT_DESC(_offset) {   \
> +       .offset = A5PSW_##_offset,      \
> +       .name = __stringify(_offset),   \
> +}

Indeed, nice catch ! Thanks for the patch !

> 
> The attached patch does the conversion if you want to fixup into your 
> commit.
diff mbox series

Patch

diff --git a/drivers/net/dsa/rzn1_a5psw.c b/drivers/net/dsa/rzn1_a5psw.c
index 1e2fac80f3e0..46ba25672593 100644
--- a/drivers/net/dsa/rzn1_a5psw.c
+++ b/drivers/net/dsa/rzn1_a5psw.c
@@ -17,6 +17,61 @@ 
 
 #include "rzn1_a5psw.h"
 
+struct a5psw_stats {
+	u16 offset;
+	const char name[ETH_GSTRING_LEN];
+};
+
+#define STAT_DESC(_offset, _name) {.offset = _offset, .name = _name}
+
+static const struct a5psw_stats a5psw_stats[] = {
+	STAT_DESC(A5PSW_aFramesTransmittedOK, "aFrameTransmittedOK"),
+	STAT_DESC(A5PSW_aFramesReceivedOK, "aFrameReceivedOK"),
+	STAT_DESC(A5PSW_aFrameCheckSequenceErrors, "aFrameCheckSequenceErrors"),
+	STAT_DESC(A5PSW_aAlignmentErrors, "aAlignmentErrors"),
+	STAT_DESC(A5PSW_aOctetsTransmittedOK, "aOctetsTransmittedOK"),
+	STAT_DESC(A5PSW_aOctetsReceivedOK, "aOctetsReceivedOK"),
+	STAT_DESC(A5PSW_aTxPAUSEMACCtrlFrames, "aTxPAUSEMACCtrlFrames"),
+	STAT_DESC(A5PSW_aRxPAUSEMACCtrlFrames, "aRxPAUSEMACCtrlFrames"),
+	STAT_DESC(A5PSW_ifInErrors, "ifInErrors"),
+	STAT_DESC(A5PSW_ifOutErrors, "ifOutErrors"),
+	STAT_DESC(A5PSW_ifInUcastPkts, "ifInUcastPkts"),
+	STAT_DESC(A5PSW_ifInMulticastPkts, "ifInMulticastPkts"),
+	STAT_DESC(A5PSW_ifInBroadcastPkts, "ifInBroadcastPkts"),
+	STAT_DESC(A5PSW_ifOutDiscards, "ifOutDiscards"),
+	STAT_DESC(A5PSW_ifOutUcastPkts, "ifOutUcastPkts"),
+	STAT_DESC(A5PSW_ifOutMulticastPkts, "ifOutMulticastPkts"),
+	STAT_DESC(A5PSW_ifOutBroadcastPkts, "ifOutBroadcastPkts"),
+	STAT_DESC(A5PSW_etherStatsDropEvents, "etherStatsDropEvents"),
+	STAT_DESC(A5PSW_etherStatsOctets, "etherStatsOctets"),
+	STAT_DESC(A5PSW_etherStatsPkts, "etherStatsPkts"),
+	STAT_DESC(A5PSW_etherStatsUndersizePkts, "etherStatsUndersizePkts"),
+	STAT_DESC(A5PSW_etherStatsOversizePkts, "etherStatsOversizePkts"),
+	STAT_DESC(A5PSW_etherStatsPkts64Octets, "etherStatsPkts64Octets"),
+	STAT_DESC(A5PSW_etherStatsPkts65to127Octets,
+		  "etherStatsPkts65to127Octets"),
+	STAT_DESC(A5PSW_etherStatsPkts128to255Octets,
+		  "etherStatsPkts128to255Octets"),
+	STAT_DESC(A5PSW_etherStatsPkts256to511Octets,
+		  "etherStatsPkts256to511Octets"),
+	STAT_DESC(A5PSW_etherStatsPkts512to1023Octets,
+		  "etherStatsPkts512to1023Octets"),
+	STAT_DESC(A5PSW_etherStatsPkts1024to1518Octets,
+		  "etherStatsPkts1024to1518Octets"),
+	STAT_DESC(A5PSW_etherStatsPkts1519toXOctets,
+		  "etherStatsPkts1519toXOctets"),
+	STAT_DESC(A5PSW_etherStatsJabbers, "etherStatsJabbers"),
+	STAT_DESC(A5PSW_etherStatsFragments, "etherStatsFragments"),
+	STAT_DESC(A5PSW_VLANReceived, "VLANReceived"),
+	STAT_DESC(A5PSW_VLANTransmitted, "VLANTransmitted"),
+	STAT_DESC(A5PSW_aDeferred, "aDeferred"),
+	STAT_DESC(A5PSW_aMultipleCollisions, "aMultipleCollisions"),
+	STAT_DESC(A5PSW_aSingleCollisions, "aSingleCollisions"),
+	STAT_DESC(A5PSW_aLateCollisions, "aLateCollisions"),
+	STAT_DESC(A5PSW_aExcessiveCollisions, "aExcessiveCollisions"),
+	STAT_DESC(A5PSW_aCarrierSenseErrors, "aCarrierSenseErrors"),
+};
+
 static void a5psw_reg_writel(struct a5psw *a5psw, int offset, u32 value)
 {
 	writel(value, a5psw->base + offset);
@@ -325,6 +380,123 @@  static void a5psw_port_fast_age(struct dsa_switch *ds, int port)
 	a5psw_port_fdb_flush(a5psw, port);
 }
 
+static u64 a5psw_read_stat(struct a5psw *a5psw, u32 offset, int port)
+{
+	u32 reg_lo, reg_hi;
+
+	reg_lo = a5psw_reg_readl(a5psw, offset + A5PSW_PORT_OFFSET(port));
+	/* A5PSW_STATS_HIWORD is latched on stat read */
+	reg_hi = a5psw_reg_readl(a5psw, A5PSW_STATS_HIWORD);
+
+	return ((u64)reg_hi << 32) | reg_lo;
+}
+
+static void a5psw_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+			      uint8_t *data)
+{
+	unsigned int u;
+
+	if (stringset != ETH_SS_STATS)
+		return;
+
+	for (u = 0; u < ARRAY_SIZE(a5psw_stats); u++) {
+		memcpy(data + u * ETH_GSTRING_LEN, a5psw_stats[u].name,
+		       ETH_GSTRING_LEN);
+	}
+}
+
+static void a5psw_get_ethtool_stats(struct dsa_switch *ds, int port,
+				    uint64_t *data)
+{
+	struct a5psw *a5psw = ds->priv;
+	unsigned int u;
+
+	for (u = 0; u < ARRAY_SIZE(a5psw_stats); u++)
+		data[u] = a5psw_read_stat(a5psw, a5psw_stats[u].offset, port);
+}
+
+static int a5psw_get_sset_count(struct dsa_switch *ds, int port, int sset)
+{
+	if (sset != ETH_SS_STATS)
+		return 0;
+
+	return ARRAY_SIZE(a5psw_stats);
+}
+
+static void a5psw_get_eth_mac_stats(struct dsa_switch *ds, int port,
+				    struct ethtool_eth_mac_stats *mac_stats)
+{
+	struct a5psw *a5psw = ds->priv;
+
+#define RD(name) a5psw_read_stat(a5psw, A5PSW_##name, port)
+	mac_stats->FramesTransmittedOK = RD(aFramesTransmittedOK);
+	mac_stats->SingleCollisionFrames = RD(aSingleCollisions);
+	mac_stats->MultipleCollisionFrames = RD(aMultipleCollisions);
+	mac_stats->FramesReceivedOK = RD(aFramesReceivedOK);
+	mac_stats->FrameCheckSequenceErrors = RD(aFrameCheckSequenceErrors);
+	mac_stats->AlignmentErrors = RD(aAlignmentErrors);
+	mac_stats->OctetsTransmittedOK = RD(aOctetsTransmittedOK);
+	mac_stats->FramesWithDeferredXmissions = RD(aDeferred);
+	mac_stats->LateCollisions = RD(aLateCollisions);
+	mac_stats->FramesAbortedDueToXSColls = RD(aExcessiveCollisions);
+	mac_stats->FramesLostDueToIntMACXmitError = RD(ifOutErrors);
+	mac_stats->CarrierSenseErrors = RD(aCarrierSenseErrors);
+	mac_stats->OctetsReceivedOK = RD(aOctetsReceivedOK);
+	mac_stats->FramesLostDueToIntMACRcvError = RD(ifInErrors);
+	mac_stats->MulticastFramesXmittedOK = RD(ifOutMulticastPkts);
+	mac_stats->BroadcastFramesXmittedOK = RD(ifOutBroadcastPkts);
+	mac_stats->FramesWithExcessiveDeferral = RD(aDeferred);
+	mac_stats->MulticastFramesReceivedOK = RD(ifInMulticastPkts);
+	mac_stats->BroadcastFramesReceivedOK = RD(ifInBroadcastPkts);
+#undef RD
+}
+
+static const struct ethtool_rmon_hist_range a5psw_rmon_ranges[] = {
+	{ 0, 64 },
+	{ 65, 127 },
+	{ 128, 255 },
+	{ 256, 511 },
+	{ 512, 1023 },
+	{ 1024, 1518 },
+	{ 1519, A5PSW_MAX_MTU },
+	{}
+};
+
+static void a5psw_get_rmon_stats(struct dsa_switch *ds, int port,
+				 struct ethtool_rmon_stats *rmon_stats,
+				 const struct ethtool_rmon_hist_range **ranges)
+{
+	struct a5psw *a5psw = ds->priv;
+
+#define RD(name) a5psw_read_stat(a5psw, A5PSW_##name, port)
+	rmon_stats->undersize_pkts = RD(etherStatsUndersizePkts);
+	rmon_stats->oversize_pkts = RD(etherStatsOversizePkts);
+	rmon_stats->fragments = RD(etherStatsFragments);
+	rmon_stats->jabbers = RD(etherStatsJabbers);
+	rmon_stats->hist[0] = RD(etherStatsPkts64Octets);
+	rmon_stats->hist[1] = RD(etherStatsPkts65to127Octets);
+	rmon_stats->hist[2] = RD(etherStatsPkts128to255Octets);
+	rmon_stats->hist[3] = RD(etherStatsPkts256to511Octets);
+	rmon_stats->hist[4] = RD(etherStatsPkts512to1023Octets);
+	rmon_stats->hist[5] = RD(etherStatsPkts1024to1518Octets);
+	rmon_stats->hist[6] = RD(etherStatsPkts1519toXOctets);
+#undef RD
+
+	*ranges = a5psw_rmon_ranges;
+}
+
+static void a5psw_get_eth_ctrl_stats(struct dsa_switch *ds, int port,
+				     struct ethtool_eth_ctrl_stats *ctrl_stats)
+{
+	struct a5psw *a5psw = ds->priv;
+	u64 stat;
+
+	stat = a5psw_read_stat(a5psw, A5PSW_aTxPAUSEMACCtrlFrames, port);
+	ctrl_stats->MACControlFramesTransmitted = stat;
+	stat = a5psw_read_stat(a5psw, A5PSW_aRxPAUSEMACCtrlFrames, port);
+	ctrl_stats->MACControlFramesReceived = stat;
+}
+
 static int a5psw_setup(struct dsa_switch *ds)
 {
 	struct a5psw *a5psw = ds->priv;
@@ -413,6 +585,12 @@  static const struct dsa_switch_ops a5psw_switch_ops = {
 	.phylink_mac_link_up = a5psw_phylink_mac_link_up,
 	.port_change_mtu = a5psw_port_change_mtu,
 	.port_max_mtu = a5psw_port_max_mtu,
+	.get_sset_count = a5psw_get_sset_count,
+	.get_strings = a5psw_get_strings,
+	.get_ethtool_stats = a5psw_get_ethtool_stats,
+	.get_eth_mac_stats = a5psw_get_eth_mac_stats,
+	.get_eth_ctrl_stats = a5psw_get_eth_ctrl_stats,
+	.get_rmon_stats = a5psw_get_rmon_stats,
 	.set_ageing_time = a5psw_set_ageing_time,
 	.port_bridge_join = a5psw_port_bridge_join,
 	.port_bridge_leave = a5psw_port_bridge_leave,
diff --git a/drivers/net/dsa/rzn1_a5psw.h b/drivers/net/dsa/rzn1_a5psw.h
index 306cab55db24..649165d37fde 100644
--- a/drivers/net/dsa/rzn1_a5psw.h
+++ b/drivers/net/dsa/rzn1_a5psw.h
@@ -146,7 +146,50 @@ 
 
 #define A5PSW_STATS_HIWORD		0x900
 
-#define A5PSW_DUMMY_WORKAROUND		0x5000
+/* Stats */
+#define A5PSW_aFramesTransmittedOK		0x868
+#define A5PSW_aFramesReceivedOK			0x86C
+#define A5PSW_aFrameCheckSequenceErrors		0x870
+#define A5PSW_aAlignmentErrors			0x874
+#define A5PSW_aOctetsTransmittedOK		0x878
+#define A5PSW_aOctetsReceivedOK			0x87C
+#define A5PSW_aTxPAUSEMACCtrlFrames		0x880
+#define A5PSW_aRxPAUSEMACCtrlFrames		0x884
+	/* If */
+#define A5PSW_ifInErrors			0x888
+#define A5PSW_ifOutErrors			0x88C
+#define A5PSW_ifInUcastPkts			0x890
+#define A5PSW_ifInMulticastPkts			0x894
+#define A5PSW_ifInBroadcastPkts			0x898
+#define A5PSW_ifOutDiscards			0x89C
+#define A5PSW_ifOutUcastPkts			0x8A0
+#define A5PSW_ifOutMulticastPkts		0x8A4
+#define A5PSW_ifOutBroadcastPkts		0x8A8
+	/* Ether */
+#define A5PSW_etherStatsDropEvents		0x8AC
+#define A5PSW_etherStatsOctets			0x8B0
+#define A5PSW_etherStatsPkts			0x8B4
+#define A5PSW_etherStatsUndersizePkts		0x8B8
+#define A5PSW_etherStatsOversizePkts		0x8BC
+#define A5PSW_etherStatsPkts64Octets		0x8C0
+#define A5PSW_etherStatsPkts65to127Octets	0x8C4
+#define A5PSW_etherStatsPkts128to255Octets	0x8C8
+#define A5PSW_etherStatsPkts256to511Octets	0x8CC
+#define A5PSW_etherStatsPkts512to1023Octets	0x8D0
+#define A5PSW_etherStatsPkts1024to1518Octets	0x8D4
+#define A5PSW_etherStatsPkts1519toXOctets	0x8D8
+#define A5PSW_etherStatsJabbers			0x8DC
+#define A5PSW_etherStatsFragments		0x8E0
+
+#define A5PSW_VLANReceived			0x8E8
+#define A5PSW_VLANTransmitted			0x8EC
+
+#define A5PSW_aDeferred				0x910
+#define A5PSW_aMultipleCollisions		0x914
+#define A5PSW_aSingleCollisions			0x918
+#define A5PSW_aLateCollisions			0x91C
+#define A5PSW_aExcessiveCollisions		0x920
+#define A5PSW_aCarrierSenseErrors		0x924
 
 #define A5PSW_VLAN_TAG(prio, id)	(((prio) << 12) | (id))
 #define A5PSW_PORTS_NUM			5
@@ -178,6 +221,7 @@ 
  * @mdio_freq: MDIO bus frequency requested
  * @pcs: Array of PCS connected to the switch ports (not for the CPU)
  * @ds: DSA switch struct
+ * @stats_lock: lock to access statistics (shared HI counter)
  * @lk_lock: Lock for the lookup table
  * @reg_lock: Lock for register read-modify-write operation
  * @bridged_ports: Mask of ports that are bridged and should be flooded