[RFC PATCH v3 4/8] net: sparx5: add port module support
Steen Hegelund
steen.hegelund at microchip.com
Fri Jan 15 08:53:35 EST 2021
This add configuration of the Sparx5 port module instances.
Signed-off-by: Steen Hegelund <steen.hegelund at microchip.com>
Signed-off-by: Bjarni Jonasson <bjarni.jonasson at microchip.com>
Signed-off-by: Lars Povlsen <lars.povlsen at microchip.com>
---
.../net/ethernet/microchip/sparx5/Makefile | 3 +-
.../ethernet/microchip/sparx5/sparx5_main.c | 24 +-
.../ethernet/microchip/sparx5/sparx5_netdev.c | 14 +-
.../microchip/sparx5/sparx5_phylink.c | 37 +-
.../ethernet/microchip/sparx5/sparx5_port.c | 1123 +++++++++++++++++
.../ethernet/microchip/sparx5/sparx5_port.h | 98 ++
6 files changed, 1288 insertions(+), 11 deletions(-)
create mode 100644 drivers/net/ethernet/microchip/sparx5/sparx5_port.c
create mode 100644 drivers/net/ethernet/microchip/sparx5/sparx5_port.h
diff --git a/drivers/net/ethernet/microchip/sparx5/Makefile b/drivers/net/ethernet/microchip/sparx5/Makefile
index 19a593d17f4a..9c14eec33fd7 100644
--- a/drivers/net/ethernet/microchip/sparx5/Makefile
+++ b/drivers/net/ethernet/microchip/sparx5/Makefile
@@ -5,4 +5,5 @@
obj-$(CONFIG_SPARX5_SWITCH) += sparx5-switch.o
-sparx5-switch-objs := sparx5_main.o sparx5_packet.o sparx5_netdev.o sparx5_phylink.o
+sparx5-switch-objs := sparx5_main.o sparx5_packet.o \
+ sparx5_netdev.o sparx5_port.o sparx5_phylink.o
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
index 6919e673ceb8..4b43e3212658 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
@@ -26,6 +26,7 @@
#include "sparx5_main_regs.h"
#include "sparx5_main.h"
+#include "sparx5_port.h"
#define QLIM_WM(fraction) \
((SPX5_BUFFER_MEMORY / SPX5_BUFFER_CELL_SZ - 100) * (fraction) / 100)
@@ -248,6 +249,8 @@ static int sparx5_create_port(struct sparx5 *sparx5,
{
struct sparx5_port *spx5_port;
struct net_device *ndev;
+ struct phylink *phylink;
+ int err;
ndev = sparx5_create_netdev(sparx5, config->portno);
if (IS_ERR(ndev)) {
@@ -267,11 +270,28 @@ static int sparx5_create_port(struct sparx5 *sparx5,
spx5_port->custom_etype = 0x8880; /* Vitesse */
sparx5->ports[config->portno] = spx5_port;
+ err = sparx5_port_init(sparx5, spx5_port, &config->conf);
+ if (err) {
+ dev_err(sparx5->dev, "port init failed\n");
+ return err;
+ }
spx5_port->conf = config->conf;
- /* VLAN setup to be added in later patches */
+ /* VLAN support to be added in later patches */
+
+ /* Create a phylink for PHY management. Also handles SFPs */
+ spx5_port->phylink_config.dev = &spx5_port->ndev->dev;
+ spx5_port->phylink_config.type = PHYLINK_NETDEV;
+ spx5_port->phylink_config.pcs_poll = true;
+
+ phylink = phylink_create(&spx5_port->phylink_config,
+ of_fwnode_handle(config->node),
+ config->conf.phy_mode,
+ &sparx5_phylink_mac_ops);
+ if (IS_ERR(phylink))
+ return PTR_ERR(phylink);
- /* PHYLINK setup to be added in later patches */
+ spx5_port->phylink = phylink;
return 0;
}
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c
index 0c3dfffedda4..879994668c23 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c
@@ -6,6 +6,7 @@
#include "sparx5_main_regs.h"
#include "sparx5_main.h"
+#include "sparx5_port.h"
/* The IFH bit position of the first VSTAX bit. This is because the
* VSTAX bit positions in Data sheet is starting from zero.
@@ -71,6 +72,7 @@ static int sparx5_port_open(struct net_device *ndev)
struct sparx5_port *port = netdev_priv(ndev);
int err = 0;
+ sparx5_port_enable(port, true);
err = phylink_of_phy_connect(port->phylink, port->of_node, 0);
if (err) {
netdev_err(ndev, "Could not attach to PHY\n");
@@ -82,7 +84,10 @@ static int sparx5_port_open(struct net_device *ndev)
if (!ndev->phydev) {
/* power up serdes */
port->conf.power_down = false;
- err = phy_power_on(port->serdes);
+ if (port->conf.serdes_reset)
+ err = sparx5_serdes_set(port->sparx5, port, &port->conf);
+ else
+ err = phy_power_on(port->serdes);
if (err)
netdev_err(ndev, "%s failed\n", __func__);
}
@@ -95,12 +100,17 @@ static int sparx5_port_stop(struct net_device *ndev)
struct sparx5_port *port = netdev_priv(ndev);
int err = 0;
+ sparx5_port_enable(port, false);
phylink_stop(port->phylink);
phylink_disconnect_phy(port->phylink);
if (!ndev->phydev) {
+ /* power down serdes */
port->conf.power_down = true;
- err = phy_power_off(port->serdes);
+ if (port->conf.serdes_reset)
+ err = sparx5_serdes_set(port->sparx5, port, &port->conf);
+ else
+ err = phy_power_off(port->serdes);
if (err)
netdev_err(ndev, "%s failed\n", __func__);
}
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_phylink.c b/drivers/net/ethernet/microchip/sparx5/sparx5_phylink.c
index 6d695994a7b0..652d7fd52667 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_phylink.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_phylink.c
@@ -12,6 +12,7 @@
#include "sparx5_main_regs.h"
#include "sparx5_main.h"
+#include "sparx5_port.h"
static void sparx5_phylink_validate(struct phylink_config *config,
unsigned long *supported,
@@ -94,6 +95,7 @@ static void sparx5_phylink_mac_config(struct phylink_config *config,
{
struct sparx5_port *port = netdev_priv(to_net_dev(config->dev));
struct sparx5_port_config conf;
+ int err = 0;
conf = port->conf;
conf.power_down = false;
@@ -126,6 +128,11 @@ static void sparx5_phylink_mac_config(struct phylink_config *config,
if (!port_conf_has_changed(&port->conf, &conf))
return;
+
+ /* Enable the PCS matching this interface type */
+ err = sparx5_port_pcs_set(port->sparx5, port, &conf);
+ if (err)
+ netdev_err(port->ndev, "port config failed: %d\n", err);
}
static void sparx5_phylink_mac_link_up(struct phylink_config *config,
@@ -135,17 +142,35 @@ static void sparx5_phylink_mac_link_up(struct phylink_config *config,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
- /* Currently not used */
+ struct sparx5_port *port = netdev_priv(to_net_dev(config->dev));
+ struct sparx5_port_config conf;
+ int err = 0;
+
+ conf = port->conf;
+ conf.duplex = duplex;
+ conf.pause = 0;
+ conf.pause |= tx_pause ? MLO_PAUSE_TX : 0;
+ conf.pause |= rx_pause ? MLO_PAUSE_RX : 0;
+ conf.speed = speed;
+
+ /* Configure the port to speed/duplex/pause */
+ err = sparx5_port_config(port->sparx5, port, &conf);
+ if (err)
+ netdev_err(port->ndev, "port config failed: %d\n", err);
}
static void sparx5_phylink_mac_link_state(struct phylink_config *config,
struct phylink_link_state *state)
{
- state->link = true;
- state->an_complete = true;
- state->speed = SPEED_1000;
- state->duplex = true;
- state->pause = MLO_PAUSE_AN;
+ struct sparx5_port *port = netdev_priv(to_net_dev(config->dev));
+ struct sparx5_port_status status;
+
+ sparx5_get_port_status(port->sparx5, port, &status);
+ state->link = status.link && !status.link_down;
+ state->an_complete = status.an_complete;
+ state->speed = status.speed;
+ state->duplex = status.duplex;
+ state->pause = status.pause;
}
static void sparx5_phylink_mac_aneg_restart(struct phylink_config *config)
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_port.c b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c
new file mode 100644
index 000000000000..64e21b23368f
--- /dev/null
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c
@@ -0,0 +1,1123 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Microchip Sparx5 Switch driver
+ *
+ * Copyright (c) 2020 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#include <linux/module.h>
+#include <linux/phy/phy.h>
+
+#include "sparx5_main_regs.h"
+#include "sparx5_main.h"
+#include "sparx5_port.h"
+
+#define SPX5_ETYPE_TAG_C 0x8100
+#define SPX5_ETYPE_TAG_S 0x88a8
+
+#define SPX5_WAIT_US 1000
+#define SPX5_WAIT_MAX_US 2000
+
+enum port_error {
+ SPX5_PERR_SPEED,
+ SPX5_PERR_IFTYPE,
+};
+
+#define PAUSE_DISCARD 0xC
+
+static void decode_sgmii_word(u16 lp_abil, struct sparx5_port_status *status)
+{
+ status->an_complete = true;
+ if (!(lp_abil & LPA_SGMII_LINK)) {
+ status->link = false;
+ return;
+ }
+
+ switch (lp_abil & LPA_SGMII_SPD_MASK) {
+ case LPA_SGMII_10:
+ status->speed = SPEED_10;
+ break;
+ case LPA_SGMII_100:
+ status->speed = SPEED_100;
+ break;
+ case LPA_SGMII_1000:
+ status->speed = SPEED_1000;
+ break;
+ default:
+ status->link = false;
+ return;
+ }
+ if (lp_abil & LPA_SGMII_FULL_DUPLEX)
+ status->duplex = DUPLEX_FULL;
+ else
+ status->duplex = DUPLEX_HALF;
+}
+
+static void decode_cl37_word(u16 lp_abil, uint16_t ld_abil, struct sparx5_port_status *status)
+{
+ status->link = !(lp_abil & ADVERTISE_RFAULT) && status->link;
+ status->an_complete = true;
+ status->duplex = (ADVERTISE_1000XFULL & lp_abil) ?
+ DUPLEX_FULL : DUPLEX_UNKNOWN; // 1G HDX not supported
+
+ if ((ld_abil & ADVERTISE_1000XPAUSE) &&
+ (lp_abil & ADVERTISE_1000XPAUSE)) {
+ status->pause = MLO_PAUSE_RX | MLO_PAUSE_TX;
+ } else if ((ld_abil & ADVERTISE_1000XPSE_ASYM) &&
+ (lp_abil & ADVERTISE_1000XPSE_ASYM)) {
+ status->pause |= (lp_abil & ADVERTISE_1000XPAUSE) ?
+ MLO_PAUSE_TX : 0;
+ status->pause |= (ld_abil & ADVERTISE_1000XPAUSE) ?
+ MLO_PAUSE_RX : 0;
+ } else {
+ status->pause = MLO_PAUSE_NONE;
+ }
+}
+
+static int sparx5_get_dev2g5_status(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_status *status)
+{
+ u32 portno = port->portno;
+ u16 lp_adv, ld_adv;
+ u32 value;
+
+ /* Get PCS Link down sticky */
+ value = spx5_rd(sparx5, DEV2G5_PCS1G_STICKY(portno));
+ status->link_down = DEV2G5_PCS1G_STICKY_LINK_DOWN_STICKY_GET(value);
+ if (status->link_down) /* Clear the sticky */
+ spx5_wr(value, sparx5, DEV2G5_PCS1G_STICKY(portno));
+
+ /* Get both current Link and Sync status */
+ value = spx5_rd(sparx5, DEV2G5_PCS1G_LINK_STATUS(portno));
+ status->link = DEV2G5_PCS1G_LINK_STATUS_LINK_STATUS_GET(value) &&
+ DEV2G5_PCS1G_LINK_STATUS_SYNC_STATUS_GET(value);
+
+ if (port->conf.portmode == PHY_INTERFACE_MODE_1000BASEX)
+ status->speed = SPEED_1000;
+ else if (port->conf.portmode == PHY_INTERFACE_MODE_2500BASEX)
+ status->speed = SPEED_2500;
+
+ status->duplex = DUPLEX_FULL;
+
+ /* Get PCS ANEG status register */
+ value = spx5_rd(sparx5, DEV2G5_PCS1G_ANEG_STATUS(portno));
+
+ /* Aneg complete provides more information */
+ if (DEV2G5_PCS1G_ANEG_STATUS_ANEG_COMPLETE_GET(value)) {
+ lp_adv = DEV2G5_PCS1G_ANEG_STATUS_LP_ADV_ABILITY_GET(value);
+ if (port->conf.portmode == PHY_INTERFACE_MODE_SGMII) {
+ decode_sgmii_word(lp_adv, status);
+ } else {
+ value = spx5_rd(sparx5, DEV2G5_PCS1G_ANEG_CFG(portno));
+ ld_adv = DEV2G5_PCS1G_ANEG_CFG_ADV_ABILITY_GET(value);
+ decode_cl37_word(lp_adv, ld_adv, status);
+ }
+ }
+ return 0;
+}
+
+static int sparx5_get_sfi_status(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_status *status)
+{
+ bool high_speed_dev = sparx5_is_high_speed_device(&port->conf);
+ u32 portno = port->portno;
+ u32 value, dev, tinst;
+ void __iomem *inst;
+
+ if (!high_speed_dev) {
+ netdev_err(port->ndev, "error: low speed and SFI mode\n");
+ return -EINVAL;
+ }
+
+ dev = sparx5_to_high_dev(portno);
+ tinst = sparx5_port_dev_index(portno);
+ inst = spx5_inst_get(sparx5, dev, tinst);
+
+ value = spx5_inst_rd(inst, DEV10G_MAC_TX_MONITOR_STICKY(0));
+ if (value != DEV10G_MAC_TX_MONITOR_STICKY_IDLE_STATE_STICKY) {
+ /* The link is or has been down. Clear the sticky bit */
+ status->link_down = 1;
+ spx5_inst_wr(0xffffffff, inst, DEV10G_MAC_TX_MONITOR_STICKY(0));
+ value = spx5_inst_rd(inst, DEV10G_MAC_TX_MONITOR_STICKY(0));
+ }
+ status->link = (value == DEV10G_MAC_TX_MONITOR_STICKY_IDLE_STATE_STICKY);
+ status->speed = port->conf.speed;
+ status->duplex = DUPLEX_FULL;
+ return 0;
+}
+
+/* Get link status of 1000Base-X/in-band and SFI ports.
+ */
+int sparx5_get_port_status(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_status *status)
+{
+ memset(status, 0, sizeof(*status));
+ status->speed = port->conf.speed;
+ if (port->conf.power_down) {
+ status->link = false;
+ return 0;
+ }
+ switch (port->conf.portmode) {
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_QSGMII:
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ return sparx5_get_dev2g5_status(sparx5, port, status);
+ case PHY_INTERFACE_MODE_10GBASER:
+ return sparx5_get_sfi_status(sparx5, port, status);
+ case PHY_INTERFACE_MODE_NA:
+ return 0;
+ default:
+ netdev_err(port->ndev, "Status not supported");
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static int sparx5_port_error(struct sparx5_port *port,
+ struct sparx5_port_config *conf,
+ enum port_error errtype)
+{
+ switch (errtype) {
+ case SPX5_PERR_SPEED:
+ netdev_err(port->ndev,
+ "Interface does not support speed: %u: for %s\n",
+ conf->speed, phy_modes(conf->portmode));
+ break;
+ case SPX5_PERR_IFTYPE:
+ netdev_err(port->ndev,
+ "Switch port does not support interface type: %s\n",
+ phy_modes(conf->portmode));
+ break;
+ default:
+ netdev_err(port->ndev,
+ "Interface configuration error\n");
+ }
+
+ return -EINVAL;
+}
+
+static int sparx5_port_verify_speed(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ if ((sparx5_port_is_2g5(port->portno) &&
+ conf->speed > SPEED_2500) ||
+ (sparx5_port_is_5g(port->portno) &&
+ conf->speed > SPEED_5000) ||
+ (sparx5_port_is_10g(port->portno) &&
+ conf->speed > SPEED_10000))
+ return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
+
+ switch (conf->portmode) {
+ case PHY_INTERFACE_MODE_NA:
+ return -EINVAL;
+ case PHY_INTERFACE_MODE_1000BASEX:
+ if (conf->speed != SPEED_1000 ||
+ sparx5_port_is_2g5(port->portno))
+ return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
+ if (sparx5_port_is_2g5(port->portno))
+ return sparx5_port_error(port, conf, SPX5_PERR_IFTYPE);
+ break;
+ case PHY_INTERFACE_MODE_2500BASEX:
+ if (conf->speed != SPEED_2500 ||
+ sparx5_port_is_2g5(port->portno))
+ return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
+ break;
+ case PHY_INTERFACE_MODE_QSGMII:
+ if (port->portno > 47)
+ return sparx5_port_error(port, conf, SPX5_PERR_IFTYPE);
+ fallthrough;
+ case PHY_INTERFACE_MODE_SGMII:
+ if (conf->speed != SPEED_1000 &&
+ conf->speed != SPEED_100 &&
+ conf->speed != SPEED_10 &&
+ conf->speed != SPEED_2500)
+ return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
+ break;
+ case PHY_INTERFACE_MODE_10GBASER:
+ if ((conf->speed != SPEED_5000 &&
+ conf->speed != SPEED_10000 &&
+ conf->speed != SPEED_25000))
+ return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
+ break;
+ default:
+ return sparx5_port_error(port, conf, SPX5_PERR_IFTYPE);
+ }
+ return 0;
+}
+
+static bool sparx5_dev_change(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ if (port->conf.portmode != conf->portmode)
+ if (port->conf.portmode == PHY_INTERFACE_MODE_10GBASER ||
+ conf->portmode == PHY_INTERFACE_MODE_10GBASER)
+ return true;
+
+ return false;
+}
+
+static int sparx5_port_flush_poll(struct sparx5 *sparx5, u32 portno)
+{
+ u32 value, resource, prio, delay_cnt = 0;
+ bool poll_src = true;
+ char *mem = "";
+
+ /* Resource == 0: Memory tracked per source (SRC-MEM)
+ * Resource == 1: Frame references tracked per source (SRC-REF)
+ * Resource == 2: Memory tracked per destination (DST-MEM)
+ * Resource == 3: Frame references tracked per destination. (DST-REF)
+ */
+ while (1) {
+ bool empty = true;
+
+ for (resource = 0; resource < (poll_src ? 2 : 1); resource++) {
+ u32 base;
+
+ base = (resource == 0 ? 2048 : 0) + SPX5_PRIOS * portno;
+ for (prio = 0; prio < SPX5_PRIOS; prio++) {
+ value = spx5_rd(sparx5,
+ QRES_RES_STAT(base + prio));
+ if (value) {
+ mem = resource == 0 ?
+ "DST-MEM" : "SRC-MEM";
+ empty = false;
+ }
+ }
+ }
+
+ if (empty)
+ break;
+
+ if (delay_cnt++ == 2000) {
+ dev_err(sparx5->dev,
+ "Flush timeout port %u. %s queue not empty\n",
+ portno, mem);
+ return -EINVAL;
+ }
+
+ usleep_range(SPX5_WAIT_US, SPX5_WAIT_MAX_US);
+ }
+ return 0;
+}
+
+static int sparx5_port_disable(struct sparx5 *sparx5, struct sparx5_port *port, bool high_spd_dev)
+{
+ u32 tinst = high_spd_dev ?
+ sparx5_port_dev_index(port->portno) : port->portno;
+ u32 dev = high_spd_dev ?
+ sparx5_to_high_dev(port->portno) : TARGET_DEV2G5;
+ void __iomem *devinst = spx5_inst_get(sparx5, dev, tinst);
+ u32 spd = port->conf.speed;
+ u32 spd_prm;
+ int err;
+
+ if (high_spd_dev) {
+ /* 1: Reset the PCS Rx clock domain */
+ spx5_inst_rmw(DEV10G_DEV_RST_CTRL_PCS_RX_RST,
+ DEV10G_DEV_RST_CTRL_PCS_RX_RST,
+ devinst,
+ DEV10G_DEV_RST_CTRL(0));
+
+ /* 2: Disable MAC frame reception */
+ spx5_inst_rmw(0,
+ DEV10G_MAC_ENA_CFG_RX_ENA,
+ devinst,
+ DEV10G_MAC_ENA_CFG(0));
+ } else {
+ /* 1: Reset the PCS Rx clock domain */
+ spx5_inst_rmw(DEV2G5_DEV_RST_CTRL_PCS_RX_RST,
+ DEV2G5_DEV_RST_CTRL_PCS_RX_RST,
+ devinst,
+ DEV2G5_DEV_RST_CTRL(0));
+ /* 2: Disable MAC frame reception */
+ spx5_inst_rmw(0,
+ DEV2G5_MAC_ENA_CFG_RX_ENA,
+ devinst,
+ DEV2G5_MAC_ENA_CFG(0));
+ }
+ /* 3: Disable traffic being sent to or from switch port->portno */
+ spx5_rmw(0,
+ QFWD_SWITCH_PORT_MODE_PORT_ENA,
+ sparx5,
+ QFWD_SWITCH_PORT_MODE(port->portno));
+
+ /* 4: Disable dequeuing from the egress queues */
+ spx5_rmw(HSCH_PORT_MODE_DEQUEUE_DIS,
+ HSCH_PORT_MODE_DEQUEUE_DIS,
+ sparx5,
+ HSCH_PORT_MODE(port->portno));
+
+ /* 5: Disable Flowcontrol */
+ spx5_rmw(QSYS_PAUSE_CFG_PAUSE_STOP_SET(0xFFF - 1),
+ QSYS_PAUSE_CFG_PAUSE_STOP,
+ sparx5,
+ QSYS_PAUSE_CFG(port->portno));
+
+ spd_prm = spd == SPEED_10 ? 1000 : spd == SPEED_100 ? 100 : 10;
+ /* 6: Wait while the last frame is exiting the queues */
+ usleep_range(8 * spd_prm, 10 * spd_prm);
+
+ /* 7: Flush the queues accociated with the port->portno */
+ spx5_rmw(HSCH_FLUSH_CTRL_FLUSH_PORT_SET(port->portno) |
+ HSCH_FLUSH_CTRL_FLUSH_DST_SET(1) |
+ HSCH_FLUSH_CTRL_FLUSH_SRC_SET(1) |
+ HSCH_FLUSH_CTRL_FLUSH_ENA_SET(1),
+ HSCH_FLUSH_CTRL_FLUSH_PORT |
+ HSCH_FLUSH_CTRL_FLUSH_DST |
+ HSCH_FLUSH_CTRL_FLUSH_SRC |
+ HSCH_FLUSH_CTRL_FLUSH_ENA,
+ sparx5,
+ HSCH_FLUSH_CTRL);
+
+ /* 8: Enable dequeuing from the egress queues */
+ spx5_rmw(0,
+ HSCH_PORT_MODE_DEQUEUE_DIS,
+ sparx5,
+ HSCH_PORT_MODE(port->portno));
+
+ /* 9: Wait until flushing is complete */
+ err = sparx5_port_flush_poll(sparx5, port->portno);
+ if (err)
+ return err;
+
+ /* 10: Reset the MAC clock domain */
+ if (high_spd_dev) {
+ spx5_inst_rmw(DEV10G_DEV_RST_CTRL_PCS_TX_RST_SET(1) |
+ DEV10G_DEV_RST_CTRL_MAC_RX_RST_SET(1) |
+ DEV10G_DEV_RST_CTRL_MAC_TX_RST_SET(1),
+ DEV10G_DEV_RST_CTRL_PCS_TX_RST |
+ DEV10G_DEV_RST_CTRL_MAC_RX_RST |
+ DEV10G_DEV_RST_CTRL_MAC_TX_RST,
+ devinst,
+ DEV10G_DEV_RST_CTRL(0));
+
+ } else {
+ spx5_inst_rmw(DEV2G5_DEV_RST_CTRL_SPEED_SEL_SET(3) |
+ DEV2G5_DEV_RST_CTRL_PCS_TX_RST_SET(1) |
+ DEV2G5_DEV_RST_CTRL_PCS_RX_RST_SET(1) |
+ DEV2G5_DEV_RST_CTRL_MAC_TX_RST_SET(1) |
+ DEV2G5_DEV_RST_CTRL_MAC_RX_RST_SET(1),
+ DEV2G5_DEV_RST_CTRL_SPEED_SEL |
+ DEV2G5_DEV_RST_CTRL_PCS_TX_RST |
+ DEV2G5_DEV_RST_CTRL_PCS_RX_RST |
+ DEV2G5_DEV_RST_CTRL_MAC_TX_RST |
+ DEV2G5_DEV_RST_CTRL_MAC_RX_RST,
+ devinst,
+ DEV2G5_DEV_RST_CTRL(0));
+ }
+ /* 11: Clear flushing */
+ spx5_rmw(HSCH_FLUSH_CTRL_FLUSH_PORT_SET(port->portno) |
+ HSCH_FLUSH_CTRL_FLUSH_ENA_SET(0),
+ HSCH_FLUSH_CTRL_FLUSH_PORT |
+ HSCH_FLUSH_CTRL_FLUSH_ENA,
+ sparx5,
+ HSCH_FLUSH_CTRL);
+
+ if (high_spd_dev) {
+ u32 pcs = sparx5_to_pcs_dev(port->portno);
+ void __iomem *pcsinst = spx5_inst_get(sparx5, pcs, tinst);
+
+ /* 12: Disable 5G/10G/25 BaseR PCS */
+ spx5_inst_rmw(PCS10G_BR_PCS_CFG_PCS_ENA_SET(0),
+ PCS10G_BR_PCS_CFG_PCS_ENA,
+ pcsinst,
+ PCS10G_BR_PCS_CFG(0));
+
+ if (sparx5_port_is_25g(port->portno))
+ /* Disable 25G PCS */
+ spx5_rmw(DEV25G_PCS25G_CFG_PCS25G_ENA_SET(0),
+ DEV25G_PCS25G_CFG_PCS25G_ENA,
+ sparx5,
+ DEV25G_PCS25G_CFG(tinst));
+ } else {
+ /* 12: Disable 1G PCS */
+ spx5_rmw(DEV2G5_PCS1G_CFG_PCS_ENA_SET(0),
+ DEV2G5_PCS1G_CFG_PCS_ENA,
+ sparx5,
+ DEV2G5_PCS1G_CFG(port->portno));
+ }
+
+ /* The port is now flushed and disabled */
+ return 0;
+}
+
+static int sparx5_port_fifo_sz(struct sparx5 *sparx5,
+ u32 portno, u32 speed)
+{
+ u32 sys_clk = sparx5_clk_period(sparx5->coreclock);
+ const u32 taxi_dist[SPX5_PORTS_ALL] = {
+ 6, 8, 10, 6, 8, 10, 6, 8, 10, 6, 8, 10,
+ 4, 4, 4, 4,
+ 11, 12, 13, 14, 15, 16, 17, 18,
+ 11, 12, 13, 14, 15, 16, 17, 18,
+ 11, 12, 13, 14, 15, 16, 17, 18,
+ 11, 12, 13, 14, 15, 16, 17, 18,
+ 4, 6, 8, 4, 6, 8, 6, 8,
+ 2, 2, 2, 2, 2, 2, 2, 4, 2
+ };
+ u32 mac_per = 6400, tmp1, tmp2, tmp3;
+ u32 fifo_width = 16;
+ u32 mac_width = 8;
+ u32 addition = 0;
+
+ switch (speed) {
+ case SPEED_25000:
+ return 0;
+ case SPEED_10000:
+ mac_per = 6400;
+ mac_width = 8;
+ addition = 1;
+ break;
+ case SPEED_5000:
+ mac_per = 12800;
+ mac_width = 8;
+ addition = 0;
+ break;
+ case SPEED_2500:
+ mac_per = 3200;
+ mac_width = 1;
+ addition = 0;
+ break;
+ case SPEED_1000:
+ mac_per = 8000;
+ mac_width = 1;
+ addition = 0;
+ break;
+ case SPEED_100:
+ case SPEED_10:
+ return 1;
+ default:
+ break;
+ }
+
+ tmp1 = 1000 * mac_width / fifo_width;
+ tmp2 = 3000 + ((12000 + 2 * taxi_dist[portno] * 1000)
+ * sys_clk / mac_per);
+ tmp3 = tmp1 * tmp2 / 1000;
+ return (tmp3 + 2000 + 999) / 1000 + addition;
+}
+
+/* Configure port muxing:
+ * QSGMII: 4x2G5 devices
+ */
+static int sparx5_port_mux_set(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ u32 portno = port->portno;
+ u32 inst;
+
+ if (port->conf.portmode == conf->portmode)
+ return 0; /* Nothing to do */
+
+ switch (conf->portmode) {
+ case PHY_INTERFACE_MODE_QSGMII: /* QSGMII: 4x2G5 devices. Mode Q' */
+ inst = (portno - portno % 4) / 4;
+ spx5_rmw(BIT(inst),
+ BIT(inst),
+ sparx5,
+ PORT_CONF_QSGMII_ENA);
+
+ if ((portno / 4 % 2) == 0) {
+ /* Affects d0-d3,d8-d11..d40-d43 */
+ spx5_rmw(PORT_CONF_USGMII_CFG_BYPASS_SCRAM_SET(1) |
+ PORT_CONF_USGMII_CFG_BYPASS_DESCRAM_SET(1) |
+ PORT_CONF_USGMII_CFG_QUAD_MODE_SET(1),
+ PORT_CONF_USGMII_CFG_BYPASS_SCRAM |
+ PORT_CONF_USGMII_CFG_BYPASS_DESCRAM |
+ PORT_CONF_USGMII_CFG_QUAD_MODE,
+ sparx5,
+ PORT_CONF_USGMII_CFG((portno / 8)));
+ }
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+static int sparx5_port_max_tags_set(struct sparx5 *sparx5,
+ struct sparx5_port *port)
+{
+ enum sparx5_port_max_tags max_tags = port->max_vlan_tags;
+ int tag_ct = max_tags == SPX5_PORT_MAX_TAGS_ONE ? 1 :
+ max_tags == SPX5_PORT_MAX_TAGS_TWO ? 2 : 0;
+ bool dtag = max_tags == SPX5_PORT_MAX_TAGS_TWO;
+ enum sparx5_vlan_port_type vlan_type = port->vlan_type;
+ bool dotag = max_tags != SPX5_PORT_MAX_TAGS_NONE;
+ u32 dev = sparx5_to_high_dev(port->portno);
+ u32 tinst = sparx5_port_dev_index(port->portno);
+ void __iomem *inst = spx5_inst_get(sparx5, dev, tinst);
+ u32 etype;
+
+ etype = (vlan_type == SPX5_VLAN_PORT_TYPE_S_CUSTOM ?
+ port->custom_etype :
+ vlan_type == SPX5_VLAN_PORT_TYPE_C ?
+ SPX5_ETYPE_TAG_C : SPX5_ETYPE_TAG_S);
+
+ spx5_wr(DEV2G5_MAC_TAGS_CFG_TAG_ID_SET(etype) |
+ DEV2G5_MAC_TAGS_CFG_PB_ENA_SET(dtag) |
+ DEV2G5_MAC_TAGS_CFG_VLAN_AWR_ENA_SET(dotag) |
+ DEV2G5_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA_SET(dotag),
+ sparx5,
+ DEV2G5_MAC_TAGS_CFG(port->portno));
+
+ if (sparx5_port_is_2g5(port->portno))
+ return 0;
+
+ spx5_inst_rmw(DEV10G_MAC_TAGS_CFG_TAG_ID_SET(etype) |
+ DEV10G_MAC_TAGS_CFG_TAG_ENA_SET(dotag),
+ DEV10G_MAC_TAGS_CFG_TAG_ID |
+ DEV10G_MAC_TAGS_CFG_TAG_ENA,
+ inst,
+ DEV10G_MAC_TAGS_CFG(0, 0));
+
+ spx5_inst_rmw(DEV10G_MAC_NUM_TAGS_CFG_NUM_TAGS_SET(tag_ct),
+ DEV10G_MAC_NUM_TAGS_CFG_NUM_TAGS,
+ inst,
+ DEV10G_MAC_NUM_TAGS_CFG(0));
+
+ spx5_inst_rmw(DEV10G_MAC_MAXLEN_CFG_MAX_LEN_TAG_CHK_SET(dotag),
+ DEV10G_MAC_MAXLEN_CFG_MAX_LEN_TAG_CHK,
+ inst,
+ DEV10G_MAC_MAXLEN_CFG(0));
+ return 0;
+}
+
+static int sparx5_port_fwd_urg(struct sparx5 *sparx5, u32 speed)
+{
+ u32 clk_period_ps = 1600; /* 625Mhz for now */
+ u32 urg = 672000;
+
+ switch (speed) {
+ case SPEED_10:
+ case SPEED_100:
+ case SPEED_1000:
+ urg = 672000;
+ break;
+ case SPEED_2500:
+ urg = 270000;
+ break;
+ case SPEED_5000:
+ urg = 135000;
+ break;
+ case SPEED_10000:
+ urg = 67200;
+ break;
+ case SPEED_25000:
+ urg = 27000;
+ break;
+ }
+ return urg / clk_period_ps - 1;
+}
+
+static u16 sparx5_wm_enc(u16 value)
+{
+ if (value >= 2048)
+ return 2048 + value / 16;
+
+ return value;
+}
+
+static int sparx5_port_fc_setup(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ bool fc_obey = conf->pause & MLO_PAUSE_RX ? 1 : 0;
+ u32 pause_stop = 0xFFF - 1; /* FC gen disabled */
+
+ if (conf->pause & MLO_PAUSE_TX) {
+ int maxlen = ETH_DATA_LEN + ETH_HLEN + ETH_FCS_LEN;
+
+ pause_stop = sparx5_wm_enc(4 * (maxlen / SPX5_BUFFER_CELL_SZ));
+ }
+
+ /* Set HDX flowcontrol */
+ spx5_rmw(DSM_MAC_CFG_HDX_BACKPREASSURE_SET(conf->duplex == DUPLEX_HALF),
+ DSM_MAC_CFG_HDX_BACKPREASSURE,
+ sparx5,
+ DSM_MAC_CFG(port->portno));
+
+ /* Obey flowcontrol */
+ spx5_rmw(DSM_RX_PAUSE_CFG_RX_PAUSE_EN_SET(fc_obey),
+ DSM_RX_PAUSE_CFG_RX_PAUSE_EN,
+ sparx5,
+ DSM_RX_PAUSE_CFG(port->portno));
+
+ /* Disable forward pressure */
+ spx5_rmw(QSYS_FWD_PRESSURE_FWD_PRESSURE_DIS_SET(fc_obey),
+ QSYS_FWD_PRESSURE_FWD_PRESSURE_DIS,
+ sparx5,
+ QSYS_FWD_PRESSURE(port->portno));
+
+ /* Generate pause frames */
+ spx5_rmw(QSYS_PAUSE_CFG_PAUSE_STOP_SET(pause_stop),
+ QSYS_PAUSE_CFG_PAUSE_STOP,
+ sparx5,
+ QSYS_PAUSE_CFG(port->portno));
+
+ return 0;
+}
+
+static u16 sparx5_get_aneg_word(struct sparx5_port_config *conf)
+{
+ if (conf->portmode == PHY_INTERFACE_MODE_1000BASEX) /* cl-37 aneg */
+ return (ADVERTISE_LPACK |
+ (conf->pause == MLO_PAUSE_AN ? ADVERTISE_1000XPAUSE : 0) |
+ (conf->pause == MLO_PAUSE_AN ? ADVERTISE_1000XPSE_ASYM : 0) |
+ ADVERTISE_1000XFULL);
+ else
+ return 1; /* Enable SGMII Aneg */
+}
+
+int sparx5_serdes_set(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ union phy_configure_opts opts = {
+ .eth_serdes.speed = conf->speed,
+ .eth_serdes.media_type = conf->media_type,
+ };
+ int err;
+
+ if (conf->portmode == PHY_INTERFACE_MODE_QSGMII &&
+ ((port->portno % 4) != 0)) {
+ return 0;
+ }
+ err = phy_set_mode_ext(port->serdes, PHY_MODE_ETHERNET, conf->portmode);
+ if (err)
+ return err;
+ if (conf->serdes_reset) {
+ err = phy_reset(port->serdes);
+ if (err)
+ return err;
+ }
+ /* Configure SerDes with port parameters */
+ err = phy_configure(port->serdes, &opts);
+ if (err)
+ return err;
+ conf->serdes_reset = false;
+ return err;
+}
+
+static int sparx5_port_pcs_low_set(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ bool sgmii = false, inband_aneg = false;
+ int err;
+
+ if (!port->conf.has_sfp) {
+ sgmii = true; /* Phy is connnected to the MAC */
+ } else {
+ if (conf->portmode == PHY_INTERFACE_MODE_SGMII ||
+ conf->portmode == PHY_INTERFACE_MODE_QSGMII)
+ inband_aneg = true; /* Cisco-SGMII in-band-aneg */
+ else if (conf->portmode == PHY_INTERFACE_MODE_1000BASEX &&
+ conf->autoneg)
+ inband_aneg = true; /* Clause-37 in-band-aneg */
+
+ err = sparx5_serdes_set(sparx5, port, conf);
+ if (err)
+ return -EINVAL;
+ }
+
+ /* Choose SGMII or 1000BaseX/2500BaseX PCS mode */
+ spx5_rmw(DEV2G5_PCS1G_MODE_CFG_SGMII_MODE_ENA_SET(sgmii),
+ DEV2G5_PCS1G_MODE_CFG_SGMII_MODE_ENA,
+ sparx5,
+ DEV2G5_PCS1G_MODE_CFG(port->portno));
+
+ /* Enable PCS */
+ spx5_wr(DEV2G5_PCS1G_CFG_PCS_ENA_SET(1),
+ sparx5,
+ DEV2G5_PCS1G_CFG(port->portno));
+
+ if (inband_aneg) {
+ u16 abil = sparx5_get_aneg_word(conf);
+
+ /* Enable in-band aneg */
+ spx5_wr(DEV2G5_PCS1G_ANEG_CFG_ADV_ABILITY_SET(abil) |
+ DEV2G5_PCS1G_ANEG_CFG_SW_RESOLVE_ENA_SET(1) |
+ DEV2G5_PCS1G_ANEG_CFG_ANEG_ENA_SET(1) |
+ DEV2G5_PCS1G_ANEG_CFG_ANEG_RESTART_ONE_SHOT_SET(1),
+ sparx5,
+ DEV2G5_PCS1G_ANEG_CFG(port->portno));
+ } else {
+ spx5_wr(0, sparx5, DEV2G5_PCS1G_ANEG_CFG(port->portno));
+ }
+
+ /* Take PCS out of reset */
+ spx5_rmw(DEV2G5_DEV_RST_CTRL_SPEED_SEL_SET(2) |
+ DEV2G5_DEV_RST_CTRL_PCS_TX_RST_SET(0) |
+ DEV2G5_DEV_RST_CTRL_PCS_RX_RST_SET(0),
+ DEV2G5_DEV_RST_CTRL_SPEED_SEL |
+ DEV2G5_DEV_RST_CTRL_PCS_TX_RST |
+ DEV2G5_DEV_RST_CTRL_PCS_RX_RST,
+ sparx5,
+ DEV2G5_DEV_RST_CTRL(port->portno));
+
+ return 0;
+}
+
+static int sparx5_port_pcs_high_set(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ u32 pix = sparx5_port_dev_index(port->portno);
+ u32 clk_spd = conf->speed == SPEED_5000 ? 1 : 0;
+ u32 dev = sparx5_to_high_dev(port->portno);
+ void __iomem *devinst = spx5_inst_get(sparx5, dev, pix);
+ u32 pcs = sparx5_to_pcs_dev(port->portno);
+ void __iomem *pcsinst = spx5_inst_get(sparx5, pcs, pix);
+ int err;
+
+ /* SFI : No in-band-aneg. Speeds 5G/10G/25G */
+
+ err = sparx5_serdes_set(sparx5, port, conf);
+ if (err)
+ return -EINVAL;
+
+ if (conf->speed == SPEED_25000) {
+ /* Enable PCS for 25G device, speed 25G */
+ spx5_rmw(DEV25G_PCS25G_CFG_PCS25G_ENA_SET(1),
+ DEV25G_PCS25G_CFG_PCS25G_ENA,
+ sparx5,
+ DEV25G_PCS25G_CFG(pix));
+ } else {
+ /* Enable PCS for 5G/10G/25G devices, speed 5G/10G */
+ spx5_inst_rmw(PCS10G_BR_PCS_CFG_PCS_ENA_SET(1),
+ PCS10G_BR_PCS_CFG_PCS_ENA,
+ pcsinst,
+ PCS10G_BR_PCS_CFG(0));
+ }
+
+ /* Enable 5G/10G/25G MAC module */
+ spx5_inst_wr(DEV10G_MAC_ENA_CFG_RX_ENA_SET(1) |
+ DEV10G_MAC_ENA_CFG_TX_ENA_SET(1),
+ devinst,
+ DEV10G_MAC_ENA_CFG(0));
+
+ /* Take the device out of reset */
+ spx5_inst_rmw(DEV10G_DEV_RST_CTRL_PCS_RX_RST_SET(0) |
+ DEV10G_DEV_RST_CTRL_PCS_TX_RST_SET(0) |
+ DEV10G_DEV_RST_CTRL_MAC_RX_RST_SET(0) |
+ DEV10G_DEV_RST_CTRL_MAC_TX_RST_SET(0) |
+ DEV10G_DEV_RST_CTRL_SPEED_SEL_SET(clk_spd),
+ DEV10G_DEV_RST_CTRL_PCS_RX_RST |
+ DEV10G_DEV_RST_CTRL_PCS_TX_RST |
+ DEV10G_DEV_RST_CTRL_MAC_RX_RST |
+ DEV10G_DEV_RST_CTRL_MAC_TX_RST |
+ DEV10G_DEV_RST_CTRL_SPEED_SEL,
+ devinst,
+ DEV10G_DEV_RST_CTRL(0));
+
+ return 0;
+}
+
+/* Switch between 1G/2500 and 5G/10G/25G devices */
+static void sparx5_dev_switch(struct sparx5 *sparx5, int port, bool hsd)
+{
+ int bt_indx = BIT(sparx5_port_dev_index(port));
+
+ if (sparx5_port_is_5g(port)) {
+ spx5_rmw(hsd ? 0 : bt_indx,
+ bt_indx,
+ sparx5,
+ PORT_CONF_DEV5G_MODES);
+ } else if (sparx5_port_is_10g(port)) {
+ spx5_rmw(hsd ? 0 : bt_indx,
+ bt_indx,
+ sparx5,
+ PORT_CONF_DEV10G_MODES);
+ } else if (sparx5_port_is_25g(port)) {
+ spx5_rmw(hsd ? 0 : bt_indx,
+ bt_indx,
+ sparx5,
+ PORT_CONF_DEV25G_MODES);
+ }
+}
+
+/* Configure speed/duplex dependent registers */
+static int sparx5_port_config_low_set(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ bool fdx = conf->duplex == DUPLEX_FULL;
+ int spd = conf->speed;
+ u32 clk_spd = spd == SPEED_10 ? 0 : spd == SPEED_100 ? 1 : 2;
+ u32 gig_mode = spd == SPEED_1000 || spd == SPEED_2500;
+ u32 tx_gap = spd == SPEED_1000 ? 4 : fdx ? 6 : 5;
+ u32 hdx_gap_1 = spd == SPEED_1000 ? 0 : spd == SPEED_100 ? 1 : 2;
+ u32 hdx_gap_2 = spd == SPEED_1000 ? 0 : spd == SPEED_100 ? 4 : 1;
+
+ /* GIG/FDX mode */
+ spx5_rmw(DEV2G5_MAC_MODE_CFG_GIGA_MODE_ENA_SET(gig_mode) |
+ DEV2G5_MAC_MODE_CFG_FDX_ENA_SET(fdx),
+ DEV2G5_MAC_MODE_CFG_GIGA_MODE_ENA |
+ DEV2G5_MAC_MODE_CFG_FDX_ENA,
+ sparx5,
+ DEV2G5_MAC_MODE_CFG(port->portno));
+
+ /* Set MAC IFG Gaps */
+ spx5_wr(DEV2G5_MAC_IFG_CFG_TX_IFG_SET(tx_gap) |
+ DEV2G5_MAC_IFG_CFG_RX_IFG1_SET(hdx_gap_1) |
+ DEV2G5_MAC_IFG_CFG_RX_IFG2_SET(hdx_gap_2),
+ sparx5,
+ DEV2G5_MAC_IFG_CFG(port->portno));
+
+ /* Disabling frame aging when in HDX (due to HDX issue) */
+ spx5_rmw(HSCH_PORT_MODE_AGE_DIS_SET(fdx == 0),
+ HSCH_PORT_MODE_AGE_DIS,
+ sparx5,
+ HSCH_PORT_MODE(port->portno));
+
+ /* Enable MAC module */
+ spx5_wr(DEV2G5_MAC_ENA_CFG_RX_ENA |
+ DEV2G5_MAC_ENA_CFG_TX_ENA,
+ sparx5,
+ DEV2G5_MAC_ENA_CFG(port->portno));
+
+ /* Select speed and take MAC out of reset */
+ spx5_rmw(DEV2G5_DEV_RST_CTRL_SPEED_SEL_SET(clk_spd) |
+ DEV2G5_DEV_RST_CTRL_MAC_TX_RST_SET(0) |
+ DEV2G5_DEV_RST_CTRL_MAC_RX_RST_SET(0),
+ DEV2G5_DEV_RST_CTRL_SPEED_SEL |
+ DEV2G5_DEV_RST_CTRL_MAC_TX_RST |
+ DEV2G5_DEV_RST_CTRL_MAC_RX_RST,
+ sparx5,
+ DEV2G5_DEV_RST_CTRL(port->portno));
+
+ return 0;
+}
+
+int sparx5_port_pcs_set(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+
+{
+ bool high_speed_dev = sparx5_is_high_speed_device(conf);
+ int err;
+
+ if (sparx5_dev_change(sparx5, port, conf)) {
+ /* switch device */
+ sparx5_dev_switch(sparx5, port->portno, high_speed_dev);
+
+ /* Disable the not-in-use device */
+ err = sparx5_port_disable(sparx5, port, !high_speed_dev);
+ if (err)
+ return err;
+ }
+ /* Disable the port before re-configuring */
+ err = sparx5_port_disable(sparx5, port, high_speed_dev);
+ if (err)
+ return -EINVAL;
+
+ if (high_speed_dev)
+ err = sparx5_port_pcs_high_set(sparx5, port, conf);
+ else
+ err = sparx5_port_pcs_low_set(sparx5, port, conf);
+
+ if (err)
+ return -EINVAL;
+
+ if (port->conf.has_sfp) {
+ /* Enable/disable 1G counters in ASM */
+ spx5_rmw(ASM_PORT_CFG_CSC_STAT_DIS_SET(high_speed_dev),
+ ASM_PORT_CFG_CSC_STAT_DIS,
+ sparx5,
+ ASM_PORT_CFG(port->portno));
+
+ /* Enable/disable 1G counters in DSM */
+ spx5_rmw(DSM_BUF_CFG_CSC_STAT_DIS_SET(high_speed_dev),
+ DSM_BUF_CFG_CSC_STAT_DIS,
+ sparx5,
+ DSM_BUF_CFG(port->portno));
+ }
+
+ port->conf = *conf;
+
+ return 0;
+}
+
+int sparx5_port_config(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ bool high_speed_dev = sparx5_is_high_speed_device(conf);
+ int err, urgency, stop_wm;
+
+ err = sparx5_port_verify_speed(sparx5, port, conf);
+ if (err)
+ return err;
+
+ /* high speed device is already configured */
+ if (!high_speed_dev)
+ sparx5_port_config_low_set(sparx5, port, conf);
+
+ /* Configure flow control */
+ err = sparx5_port_fc_setup(sparx5, port, conf);
+ if (err)
+ return err;
+
+ /* Set the DSM stop watermark */
+ stop_wm = sparx5_port_fifo_sz(sparx5, port->portno, conf->speed);
+ spx5_rmw(DSM_DEV_TX_STOP_WM_CFG_DEV_TX_STOP_WM_SET(stop_wm),
+ DSM_DEV_TX_STOP_WM_CFG_DEV_TX_STOP_WM,
+ sparx5,
+ DSM_DEV_TX_STOP_WM_CFG(port->portno));
+
+ /* Enable port in queue system */
+ urgency = sparx5_port_fwd_urg(sparx5, conf->speed);
+ spx5_rmw(QFWD_SWITCH_PORT_MODE_PORT_ENA_SET(1) |
+ QFWD_SWITCH_PORT_MODE_FWD_URGENCY_SET(urgency),
+ QFWD_SWITCH_PORT_MODE_PORT_ENA |
+ QFWD_SWITCH_PORT_MODE_FWD_URGENCY,
+ sparx5,
+ QFWD_SWITCH_PORT_MODE(port->portno));
+
+ /* Save the new values */
+ port->conf = *conf;
+
+ return 0;
+}
+
+/* Initialize port config to default */
+int sparx5_port_init(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf)
+{
+ int maxlen = ETH_DATA_LEN + ETH_HLEN + ETH_FCS_LEN;
+ u32 atop = sparx5_wm_enc(20 * (maxlen / SPX5_BUFFER_CELL_SZ));
+ u32 pause_start = sparx5_wm_enc(6 * (maxlen / SPX5_BUFFER_CELL_SZ));
+ u32 devhigh = sparx5_to_high_dev(port->portno);
+ u32 pix = sparx5_port_dev_index(port->portno);
+ void __iomem *devinst = spx5_inst_get(sparx5, devhigh, pix);
+ u32 pcs = sparx5_to_pcs_dev(port->portno);
+ void __iomem *pcsinst = spx5_inst_get(sparx5, pcs, pix);
+ bool sd_pol = port->signd_active_high;
+ bool sd_sel = !port->signd_internal;
+ bool sd_ena = port->signd_enable;
+ u32 pause_stop = 0xFFF - 1; /* FC generate disabled */
+ int err;
+
+ /* Set the mux port mode */
+ err = sparx5_port_mux_set(sparx5, port, conf);
+ if (err)
+ return err;
+
+ /* Configure MAC vlan awareness */
+ err = sparx5_port_max_tags_set(sparx5, port);
+ if (err)
+ return err;
+
+ /* Set Max Length */
+ spx5_rmw(DEV2G5_MAC_MAXLEN_CFG_MAX_LEN_SET(maxlen),
+ DEV2G5_MAC_MAXLEN_CFG_MAX_LEN,
+ sparx5,
+ DEV2G5_MAC_MAXLEN_CFG(port->portno));
+
+ /* 1G/2G5: Signal Detect configuration */
+ spx5_wr(DEV2G5_PCS1G_SD_CFG_SD_POL_SET(sd_pol) |
+ DEV2G5_PCS1G_SD_CFG_SD_SEL_SET(sd_sel) |
+ DEV2G5_PCS1G_SD_CFG_SD_ENA_SET(sd_ena),
+ sparx5,
+ DEV2G5_PCS1G_SD_CFG(port->portno));
+
+ /* Set Pause WM hysteresis */
+ spx5_rmw(QSYS_PAUSE_CFG_PAUSE_START_SET(pause_start) |
+ QSYS_PAUSE_CFG_PAUSE_STOP_SET(pause_stop) |
+ QSYS_PAUSE_CFG_PAUSE_ENA_SET(1),
+ QSYS_PAUSE_CFG_PAUSE_START |
+ QSYS_PAUSE_CFG_PAUSE_STOP |
+ QSYS_PAUSE_CFG_PAUSE_ENA,
+ sparx5,
+ QSYS_PAUSE_CFG(port->portno));
+
+ /* Port ATOP. Frames are tail dropped when this WM is hit */
+ spx5_wr(QSYS_ATOP_ATOP_SET(atop),
+ sparx5,
+ QSYS_ATOP(port->portno));
+
+ /* Discard pause frame 01-80-C2-00-00-01 */
+ spx5_wr(PAUSE_DISCARD, sparx5, ANA_CL_CAPTURE_BPDU_CFG(port->portno));
+
+ if (conf->portmode == PHY_INTERFACE_MODE_QSGMII ||
+ conf->portmode == PHY_INTERFACE_MODE_SGMII) {
+ err = sparx5_serdes_set(sparx5, port, conf);
+ if (err)
+ return err;
+
+ if (!sparx5_port_is_2g5(port->portno))
+ /* Enable shadow device */
+ spx5_rmw(DSM_DEV_TX_STOP_WM_CFG_DEV10G_SHADOW_ENA_SET(1),
+ DSM_DEV_TX_STOP_WM_CFG_DEV10G_SHADOW_ENA,
+ sparx5,
+ DSM_DEV_TX_STOP_WM_CFG(port->portno));
+
+ sparx5_dev_switch(sparx5, port->portno, false);
+ }
+ if (conf->portmode == PHY_INTERFACE_MODE_QSGMII) {
+ // All ports must be PCS enabled in QSGMII mode
+ spx5_rmw(DEV2G5_DEV_RST_CTRL_PCS_TX_RST_SET(0),
+ DEV2G5_DEV_RST_CTRL_PCS_TX_RST,
+ sparx5,
+ DEV2G5_DEV_RST_CTRL(port->portno));
+ }
+ /* Default IFGs for 1G */
+ spx5_wr(DEV2G5_MAC_IFG_CFG_TX_IFG_SET(6) |
+ DEV2G5_MAC_IFG_CFG_RX_IFG1_SET(0) |
+ DEV2G5_MAC_IFG_CFG_RX_IFG2_SET(0),
+ sparx5,
+ DEV2G5_MAC_IFG_CFG(port->portno));
+
+ if (sparx5_port_is_2g5(port->portno))
+ return 0; /* Low speed device only - return */
+
+ /* Now setup the high speed device */
+ if (conf->portmode == PHY_INTERFACE_MODE_NA)
+ conf->portmode = PHY_INTERFACE_MODE_10GBASER;
+
+ if (sparx5_is_high_speed_device(conf))
+ sparx5_dev_switch(sparx5, port->portno, true);
+
+ /* Set Max Length */
+ spx5_inst_rmw(DEV10G_MAC_MAXLEN_CFG_MAX_LEN_SET(maxlen),
+ DEV10G_MAC_MAXLEN_CFG_MAX_LEN,
+ devinst,
+ DEV10G_MAC_ENA_CFG(0));
+
+ /* Handle Signal Detect in 10G PCS */
+ spx5_inst_wr(PCS10G_BR_PCS_SD_CFG_SD_POL_SET(sd_pol) |
+ PCS10G_BR_PCS_SD_CFG_SD_SEL_SET(sd_sel) |
+ PCS10G_BR_PCS_SD_CFG_SD_ENA_SET(sd_ena),
+ pcsinst,
+ PCS10G_BR_PCS_SD_CFG(0));
+
+ if (sparx5_port_is_25g(port->portno)) {
+ /* Handle Signal Detect in 25G PCS */
+ spx5_wr(DEV25G_PCS25G_SD_CFG_SD_POL_SET(sd_pol) |
+ DEV25G_PCS25G_SD_CFG_SD_SEL_SET(sd_sel) |
+ DEV25G_PCS25G_SD_CFG_SD_ENA_SET(sd_ena),
+ sparx5,
+ DEV25G_PCS25G_SD_CFG(pix));
+ }
+
+ return 0;
+}
+
+void sparx5_port_enable(struct sparx5_port *port, bool enable)
+{
+ struct sparx5 *sparx5 = port->sparx5;
+
+ /* Enable port for frame transfer? */
+ spx5_rmw(QFWD_SWITCH_PORT_MODE_PORT_ENA_SET(enable),
+ QFWD_SWITCH_PORT_MODE_PORT_ENA,
+ sparx5,
+ QFWD_SWITCH_PORT_MODE(port->portno));
+}
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_port.h b/drivers/net/ethernet/microchip/sparx5/sparx5_port.h
new file mode 100644
index 000000000000..c2d931121ff2
--- /dev/null
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_port.h
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Microchip Sparx5 Switch driver
+ *
+ * Copyright (c) 2020 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#ifndef __SPARX5_PORT_H__
+#define __SPARX5_PORT_H__
+
+#include "sparx5_main.h"
+
+static inline bool sparx5_port_is_2g5(int portno)
+{
+ return portno >= 16 && portno <= 47;
+}
+
+static inline bool sparx5_port_is_5g(int portno)
+{
+ return portno <= 11 || portno == 64;
+}
+
+static inline bool sparx5_port_is_10g(int portno)
+{
+ return (portno >= 12 && portno <= 15) || (portno >= 48 && portno <= 55);
+}
+
+static inline bool sparx5_port_is_25g(int portno)
+{
+ return portno >= 56 && portno <= 63;
+}
+
+static inline u32 sparx5_to_high_dev(int port)
+{
+ if (sparx5_port_is_5g(port))
+ return TARGET_DEV5G;
+ if (sparx5_port_is_10g(port))
+ return TARGET_DEV10G;
+ return TARGET_DEV25G;
+}
+
+static inline u32 sparx5_to_pcs_dev(int port)
+{
+ if (sparx5_port_is_5g(port))
+ return TARGET_PCS5G_BR;
+ if (sparx5_port_is_10g(port))
+ return TARGET_PCS10G_BR;
+ return TARGET_PCS25G_BR;
+}
+
+static inline int sparx5_port_dev_index(int port)
+{
+ if (sparx5_port_is_2g5(port))
+ return port;
+ if (sparx5_port_is_5g(port))
+ return (port <= 11 ? port : 12);
+ if (sparx5_port_is_10g(port))
+ return (port >= 12 && port <= 15) ?
+ port - 12 : port - 44;
+ return (port - 56);
+}
+
+static inline bool sparx5_is_high_speed_device(struct sparx5_port_config *conf)
+{
+ return conf->portmode == PHY_INTERFACE_MODE_10GBASER;
+}
+
+int sparx5_port_init(struct sparx5 *sparx5,
+ struct sparx5_port *spx5_port,
+ struct sparx5_port_config *conf);
+
+int sparx5_port_config(struct sparx5 *sparx5,
+ struct sparx5_port *spx5_port,
+ struct sparx5_port_config *conf);
+
+int sparx5_port_pcs_set(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_config *conf);
+
+int sparx5_serdes_set(struct sparx5 *sparx5,
+ struct sparx5_port *spx5_port,
+ struct sparx5_port_config *conf);
+
+struct sparx5_port_status {
+ bool link;
+ bool link_down;
+ int speed;
+ bool an_complete;
+ int duplex;
+ int pause;
+};
+
+int sparx5_get_port_status(struct sparx5 *sparx5,
+ struct sparx5_port *port,
+ struct sparx5_port_status *status);
+
+void sparx5_port_enable(struct sparx5_port *port, bool enable);
+
+#endif /* __SPARX5_PORT_H__ */
--
2.29.2
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