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Date: Mon, 21 Nov 2022 12:20:45 +0100
From: Simon Horman <simon.horman@...igine.com>
To: David Miller <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org, oss-drivers@...igine.com,
Yu Xiao <yu.xiao@...igine.com>,
Louis Peens <louis.peens@...igine.com>,
Simon Horman <simon.horman@...igine.com>
Subject: [PATCH net-next] nfp: ethtool: support reporting link modes
From: Yu Xiao <yu.xiao@...igine.com>
Add support for reporting link modes,
including `Supported link modes` and `Advertised link modes`,
via ethtool $DEV.
A new command `SPCODE_READ_MEDIA` is added to read info from
management firmware. Also, the mapping table `nfp_eth_media_table`
associates the link modes between NFP and kernel. Both of them
help to support this ability.
Signed-off-by: Yu Xiao <yu.xiao@...igine.com>
Reviewed-by: Louis Peens <louis.peens@...igine.com>
Signed-off-by: Simon Horman <simon.horman@...igine.com>
---
drivers/net/ethernet/netronome/nfp/nfp_main.h | 1 +
.../ethernet/netronome/nfp/nfp_net_ethtool.c | 56 ++++++++++++++++++
.../ethernet/netronome/nfp/nfpcore/nfp_nsp.c | 17 ++++++
.../ethernet/netronome/nfp/nfpcore/nfp_nsp.h | 59 +++++++++++++++++++
.../netronome/nfp/nfpcore/nfp_nsp_eth.c | 27 +++++++++
5 files changed, 160 insertions(+)
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_main.h b/drivers/net/ethernet/netronome/nfp/nfp_main.h
index 5a18af672e6b..14a751bfe1fe 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_main.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_main.h
@@ -27,6 +27,7 @@ struct nfp_hwinfo;
struct nfp_mip;
struct nfp_net;
struct nfp_nsp_identify;
+struct nfp_eth_media_buf;
struct nfp_port;
struct nfp_rtsym;
struct nfp_rtsym_table;
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
index 0058ba2b3505..be434b01b724 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
@@ -293,6 +293,59 @@ nfp_net_set_fec_link_mode(struct nfp_eth_table_port *eth_port,
}
}
+static const u8 nfp_eth_media_table[] = {
+ [NFP_MEDIA_1000BASE_CX] = ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
+ [NFP_MEDIA_1000BASE_KX] = ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
+ [NFP_MEDIA_10GBASE_KX4] = ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
+ [NFP_MEDIA_10GBASE_KR] = ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
+ [NFP_MEDIA_10GBASE_CX4] = ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
+ [NFP_MEDIA_10GBASE_CR] = ETHTOOL_LINK_MODE_10000baseCR_Full_BIT,
+ [NFP_MEDIA_10GBASE_SR] = ETHTOOL_LINK_MODE_10000baseSR_Full_BIT,
+ [NFP_MEDIA_10GBASE_ER] = ETHTOOL_LINK_MODE_10000baseER_Full_BIT,
+ [NFP_MEDIA_25GBASE_KR] = ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
+ [NFP_MEDIA_25GBASE_KR_S] = ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
+ [NFP_MEDIA_25GBASE_CR] = ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
+ [NFP_MEDIA_25GBASE_CR_S] = ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
+ [NFP_MEDIA_25GBASE_SR] = ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
+ [NFP_MEDIA_40GBASE_CR4] = ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
+ [NFP_MEDIA_40GBASE_KR4] = ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
+ [NFP_MEDIA_40GBASE_SR4] = ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
+ [NFP_MEDIA_40GBASE_LR4] = ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
+ [NFP_MEDIA_50GBASE_KR] = ETHTOOL_LINK_MODE_50000baseKR_Full_BIT,
+ [NFP_MEDIA_50GBASE_SR] = ETHTOOL_LINK_MODE_50000baseSR_Full_BIT,
+ [NFP_MEDIA_50GBASE_CR] = ETHTOOL_LINK_MODE_50000baseCR_Full_BIT,
+ [NFP_MEDIA_50GBASE_LR] = ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT,
+ [NFP_MEDIA_50GBASE_ER] = ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT,
+ [NFP_MEDIA_50GBASE_FR] = ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT,
+ [NFP_MEDIA_100GBASE_KR4] = ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
+ [NFP_MEDIA_100GBASE_SR4] = ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
+ [NFP_MEDIA_100GBASE_CR4] = ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
+ [NFP_MEDIA_100GBASE_KP4] = ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
+ [NFP_MEDIA_100GBASE_CR10] = ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
+};
+
+static void nfp_add_media_link_mode(struct nfp_port *port,
+ struct nfp_eth_table_port *eth_port,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct nfp_eth_media_buf ethm = {.eth_index = eth_port->eth_index};
+ struct nfp_cpp *cpp = port->app->cpp;
+ u8 i;
+
+ if (nfp_eth_read_media(cpp, ðm))
+ return;
+
+ for (i = 0; i < NFP_MEDIA_LINK_MODES_NUMBER; ++i) {
+ if (test_bit(i, ethm.supported_modes))
+ __set_bit(nfp_eth_media_table[i],
+ cmd->link_modes.supported);
+
+ if (test_bit(i, ethm.advertised_modes))
+ __set_bit(nfp_eth_media_table[i],
+ cmd->link_modes.advertising);
+ }
+}
+
/**
* nfp_net_get_link_ksettings - Get Link Speed settings
* @netdev: network interface device structure
@@ -311,6 +364,8 @@ nfp_net_get_link_ksettings(struct net_device *netdev,
u16 sts;
/* Init to unknowns */
+ ethtool_link_ksettings_zero_link_mode(cmd, supported);
+ ethtool_link_ksettings_zero_link_mode(cmd, advertising);
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
cmd->base.port = PORT_OTHER;
cmd->base.speed = SPEED_UNKNOWN;
@@ -321,6 +376,7 @@ nfp_net_get_link_ksettings(struct net_device *netdev,
if (eth_port) {
ethtool_link_ksettings_add_link_mode(cmd, supported, Pause);
ethtool_link_ksettings_add_link_mode(cmd, advertising, Pause);
+ nfp_add_media_link_mode(port, eth_port, cmd);
if (eth_port->supp_aneg) {
ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
if (eth_port->aneg == NFP_ANEG_AUTO) {
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c
index 730fea214b8a..7136bc48530b 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c
@@ -100,6 +100,7 @@ enum nfp_nsp_cmd {
SPCODE_FW_LOADED = 19, /* Is application firmware loaded */
SPCODE_VERSIONS = 21, /* Report FW versions */
SPCODE_READ_SFF_EEPROM = 22, /* Read module EEPROM */
+ SPCODE_READ_MEDIA = 23, /* Get either the supported or advertised media for a port */
};
struct nfp_nsp_dma_buf {
@@ -1100,4 +1101,20 @@ int nfp_nsp_read_module_eeprom(struct nfp_nsp *state, int eth_index,
kfree(buf);
return ret;
+};
+
+int nfp_nsp_read_media(struct nfp_nsp *state, void *buf, unsigned int size)
+{
+ struct nfp_nsp_command_buf_arg media = {
+ {
+ .code = SPCODE_READ_MEDIA,
+ .option = size,
+ },
+ .in_buf = buf,
+ .in_size = size,
+ .out_buf = buf,
+ .out_size = size,
+ };
+
+ return nfp_nsp_command_buf(state, &media);
}
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h
index 992d72ac98d3..c5630fe88a66 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h
@@ -65,6 +65,11 @@ static inline bool nfp_nsp_has_read_module_eeprom(struct nfp_nsp *state)
return nfp_nsp_get_abi_ver_minor(state) > 28;
}
+static inline bool nfp_nsp_has_read_media(struct nfp_nsp *state)
+{
+ return nfp_nsp_get_abi_ver_minor(state) > 33;
+}
+
enum nfp_eth_interface {
NFP_INTERFACE_NONE = 0,
NFP_INTERFACE_SFP = 1,
@@ -97,6 +102,47 @@ enum nfp_eth_fec {
NFP_FEC_DISABLED_BIT,
};
+/* link modes about RJ45 haven't been used, so there's no mapping to them */
+enum nfp_ethtool_link_mode_list {
+ NFP_MEDIA_W0_RJ45_10M,
+ NFP_MEDIA_W0_RJ45_10M_HD,
+ NFP_MEDIA_W0_RJ45_100M,
+ NFP_MEDIA_W0_RJ45_100M_HD,
+ NFP_MEDIA_W0_RJ45_1G,
+ NFP_MEDIA_W0_RJ45_2P5G,
+ NFP_MEDIA_W0_RJ45_5G,
+ NFP_MEDIA_W0_RJ45_10G,
+ NFP_MEDIA_1000BASE_CX,
+ NFP_MEDIA_1000BASE_KX,
+ NFP_MEDIA_10GBASE_KX4,
+ NFP_MEDIA_10GBASE_KR,
+ NFP_MEDIA_10GBASE_CX4,
+ NFP_MEDIA_10GBASE_CR,
+ NFP_MEDIA_10GBASE_SR,
+ NFP_MEDIA_10GBASE_ER,
+ NFP_MEDIA_25GBASE_KR,
+ NFP_MEDIA_25GBASE_KR_S,
+ NFP_MEDIA_25GBASE_CR,
+ NFP_MEDIA_25GBASE_CR_S,
+ NFP_MEDIA_25GBASE_SR,
+ NFP_MEDIA_40GBASE_CR4,
+ NFP_MEDIA_40GBASE_KR4,
+ NFP_MEDIA_40GBASE_SR4,
+ NFP_MEDIA_40GBASE_LR4,
+ NFP_MEDIA_50GBASE_KR,
+ NFP_MEDIA_50GBASE_SR,
+ NFP_MEDIA_50GBASE_CR,
+ NFP_MEDIA_50GBASE_LR,
+ NFP_MEDIA_50GBASE_ER,
+ NFP_MEDIA_50GBASE_FR,
+ NFP_MEDIA_100GBASE_KR4,
+ NFP_MEDIA_100GBASE_SR4,
+ NFP_MEDIA_100GBASE_CR4,
+ NFP_MEDIA_100GBASE_KP4,
+ NFP_MEDIA_100GBASE_CR10,
+ NFP_MEDIA_LINK_MODES_NUMBER
+};
+
#define NFP_FEC_AUTO BIT(NFP_FEC_AUTO_BIT)
#define NFP_FEC_BASER BIT(NFP_FEC_BASER_BIT)
#define NFP_FEC_REED_SOLOMON BIT(NFP_FEC_REED_SOLOMON_BIT)
@@ -256,6 +302,19 @@ enum nfp_nsp_sensor_id {
int nfp_hwmon_read_sensor(struct nfp_cpp *cpp, enum nfp_nsp_sensor_id id,
long *val);
+/* The maximum number of link modes can be added */
+#define NFP_NSP_MAX_MODE_SIZE 128
+
+struct nfp_eth_media_buf {
+ u8 eth_index;
+ u8 reserved[7];
+ DECLARE_BITMAP(supported_modes, NFP_NSP_MAX_MODE_SIZE);
+ DECLARE_BITMAP(advertised_modes, NFP_NSP_MAX_MODE_SIZE);
+};
+
+int nfp_nsp_read_media(struct nfp_nsp *state, void *buf, unsigned int size);
+int nfp_eth_read_media(struct nfp_cpp *cpp, struct nfp_eth_media_buf *ethm);
+
#define NFP_NSP_VERSION_BUFSZ 1024 /* reasonable size, not in the ABI */
enum nfp_nsp_versions {
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c
index bb64efec4c46..0996fefd6cd9 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c
@@ -647,3 +647,30 @@ int __nfp_eth_set_split(struct nfp_nsp *nsp, unsigned int lanes)
return NFP_ETH_SET_BIT_CONFIG(nsp, NSP_ETH_RAW_PORT, NSP_ETH_PORT_LANES,
lanes, NSP_ETH_CTRL_SET_LANES);
}
+
+int nfp_eth_read_media(struct nfp_cpp *cpp, struct nfp_eth_media_buf *ethm)
+{
+ struct nfp_nsp *nsp;
+ int err;
+
+ nsp = nfp_nsp_open(cpp);
+ if (IS_ERR(nsp)) {
+ err = PTR_ERR(nsp);
+ nfp_err(cpp, "Failed to access the NSP: %d\n", err);
+ return err;
+ }
+
+ if (!nfp_nsp_has_read_media(nsp)) {
+ nfp_warn(cpp, "Reading media link modes not supported. Please update flash\n");
+ err = -EOPNOTSUPP;
+ goto exit_close_nsp;
+ }
+
+ err = nfp_nsp_read_media(nsp, ethm, sizeof(*ethm));
+ if (err)
+ nfp_err(cpp, "Reading link modes failed %d\n", err);
+
+exit_close_nsp:
+ nfp_nsp_close(nsp);
+ return err;
+}
--
2.30.2
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