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net: dsa: microchip: add MIB counter reading support

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Add background MIB counter reading support.

Port MIB counters should only be read when there is link.  Otherwise it is
a waste of time as hardware never increases those counters.  There are
exceptions as some switches keep track of dropped counts no matter what.

Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tristram Ha
2019-02-22 16:36:48 -08:00
committed by David S. Miller
parent 42fc6a4c61
commit 7c6ff470aa
4 changed files with 205 additions and 48 deletions
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18
drivers/net/dsa/microchip/ksz_common.h
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@@ -1,19 +1,21 @@
/* SPDX-License-Identifier: GPL-2.0
* Microchip switch driver common header
*
* Copyright (C) 2017-2018 Microchip Technology Inc.
* Copyright (C) 2017-2019 Microchip Technology Inc.
*/
#ifndef __KSZ_COMMON_H
#define __KSZ_COMMON_H
void ksz_update_port_member(struct ksz_device *dev, int port);
void ksz_init_mib_timer(struct ksz_device *dev);
/* Common DSA access functions */
int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf);
int ksz_port_bridge_join(struct dsa_switch *ds, int port,
struct net_device *br);
void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
@@ -211,4 +213,18 @@ static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits,
ksz_write8(dev, addr, data);
}
struct ksz_poll_ctx {
struct ksz_device *dev;
int port;
int offset;
};
static inline u32 ksz_pread32_poll(struct ksz_poll_ctx *ctx)
{
u32 data;
ksz_pread32(ctx->dev, ctx->port, ctx->offset, &data);
return data;
}
#endif