blob: a69bb22c37eaba5248ab5789a32f1db9e2b41351 [file] [log] [blame]
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2019 NXP */
#include <linux/acpi.h>
#include <linux/pcs-lynx.h>
#include <linux/phy/phy.h>
#include <linux/property.h>
#include "dpaa2-eth.h"
#include "dpaa2-mac.h"
#define phylink_to_dpaa2_mac(config) \
container_of((config), struct dpaa2_mac, phylink_config)
#define DPMAC_PROTOCOL_CHANGE_VER_MAJOR 4
#define DPMAC_PROTOCOL_CHANGE_VER_MINOR 8
#define DPAA2_MAC_FEATURE_PROTOCOL_CHANGE BIT(0)
static int dpaa2_mac_cmp_ver(struct dpaa2_mac *mac,
u16 ver_major, u16 ver_minor)
{
if (mac->ver_major == ver_major)
return mac->ver_minor - ver_minor;
return mac->ver_major - ver_major;
}
static void dpaa2_mac_detect_features(struct dpaa2_mac *mac)
{
mac->features = 0;
if (dpaa2_mac_cmp_ver(mac, DPMAC_PROTOCOL_CHANGE_VER_MAJOR,
DPMAC_PROTOCOL_CHANGE_VER_MINOR) >= 0)
mac->features |= DPAA2_MAC_FEATURE_PROTOCOL_CHANGE;
}
static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode)
{
*if_mode = PHY_INTERFACE_MODE_NA;
switch (eth_if) {
case DPMAC_ETH_IF_RGMII:
*if_mode = PHY_INTERFACE_MODE_RGMII;
break;
case DPMAC_ETH_IF_USXGMII:
*if_mode = PHY_INTERFACE_MODE_USXGMII;
break;
case DPMAC_ETH_IF_QSGMII:
*if_mode = PHY_INTERFACE_MODE_QSGMII;
break;
case DPMAC_ETH_IF_SGMII:
*if_mode = PHY_INTERFACE_MODE_SGMII;
break;
case DPMAC_ETH_IF_XFI:
*if_mode = PHY_INTERFACE_MODE_10GBASER;
break;
case DPMAC_ETH_IF_CAUI:
*if_mode = PHY_INTERFACE_MODE_25GBASER;
break;
default:
return -EINVAL;
}
return 0;
}
static enum dpmac_eth_if dpmac_eth_if_mode(phy_interface_t if_mode)
{
switch (if_mode) {
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
return DPMAC_ETH_IF_RGMII;
case PHY_INTERFACE_MODE_USXGMII:
return DPMAC_ETH_IF_USXGMII;
case PHY_INTERFACE_MODE_QSGMII:
return DPMAC_ETH_IF_QSGMII;
case PHY_INTERFACE_MODE_SGMII:
return DPMAC_ETH_IF_SGMII;
case PHY_INTERFACE_MODE_10GBASER:
return DPMAC_ETH_IF_XFI;
case PHY_INTERFACE_MODE_1000BASEX:
return DPMAC_ETH_IF_1000BASEX;
case PHY_INTERFACE_MODE_25GBASER:
return DPMAC_ETH_IF_CAUI;
default:
return DPMAC_ETH_IF_MII;
}
}
static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
u16 dpmac_id)
{
struct fwnode_handle *fwnode, *parent = NULL, *child = NULL;
struct device_node *dpmacs = NULL;
int err;
u32 id;
fwnode = dev_fwnode(dev->parent);
if (is_of_node(fwnode)) {
dpmacs = of_find_node_by_name(NULL, "dpmacs");
if (!dpmacs)
return NULL;
parent = of_fwnode_handle(dpmacs);
} else if (is_acpi_node(fwnode)) {
parent = fwnode;
} else {
/* The root dprc device didn't yet get to finalize it's probe,
* thus the fwnode field is not yet set. Defer probe if we are
* facing this situation.
*/
dev_dbg(dev, "dprc not finished probing\n");
return ERR_PTR(-EPROBE_DEFER);
}
fwnode_for_each_child_node(parent, child) {
err = -EINVAL;
if (is_acpi_device_node(child))
err = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &id);
else if (is_of_node(child))
err = of_property_read_u32(to_of_node(child), "reg", &id);
if (err)
continue;
if (id == dpmac_id) {
of_node_put(dpmacs);
return child;
}
}
of_node_put(dpmacs);
return NULL;
}
static int dpaa2_mac_get_if_mode(struct fwnode_handle *dpmac_node,
struct dpmac_attr attr)
{
phy_interface_t if_mode;
int err;
err = fwnode_get_phy_mode(dpmac_node);
if (err > 0)
return err;
err = phy_mode(attr.eth_if, &if_mode);
if (!err)
return if_mode;
return err;
}
static struct phylink_pcs *dpaa2_mac_select_pcs(struct phylink_config *config,
phy_interface_t interface)
{
struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
return mac->pcs;
}
static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode,
const struct phylink_link_state *state)
{
struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
struct dpmac_link_state *dpmac_state = &mac->state;
int err;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
state->advertising))
dpmac_state->options |= DPMAC_LINK_OPT_AUTONEG;
else
dpmac_state->options &= ~DPMAC_LINK_OPT_AUTONEG;
err = dpmac_set_link_state(mac->mc_io, 0,
mac->mc_dev->mc_handle, dpmac_state);
if (err)
netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
__func__, err);
if (!mac->serdes_phy)
return;
/* This happens only if we support changing of protocol at runtime */
err = dpmac_set_protocol(mac->mc_io, 0, mac->mc_dev->mc_handle,
dpmac_eth_if_mode(state->interface));
if (err)
netdev_err(mac->net_dev, "dpmac_set_protocol() = %d\n", err);
err = phy_set_mode_ext(mac->serdes_phy, PHY_MODE_ETHERNET, state->interface);
if (err)
netdev_err(mac->net_dev, "phy_set_mode_ext() = %d\n", err);
}
static void dpaa2_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
struct dpmac_link_state *dpmac_state = &mac->state;
int err;
dpmac_state->up = 1;
dpmac_state->rate = speed;
if (duplex == DUPLEX_HALF)
dpmac_state->options |= DPMAC_LINK_OPT_HALF_DUPLEX;
else if (duplex == DUPLEX_FULL)
dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;
if (rx_pause)
dpmac_state->options |= DPMAC_LINK_OPT_PAUSE;
else
dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;
if (rx_pause ^ tx_pause)
dpmac_state->options |= DPMAC_LINK_OPT_ASYM_PAUSE;
else
dpmac_state->options &= ~DPMAC_LINK_OPT_ASYM_PAUSE;
err = dpmac_set_link_state(mac->mc_io, 0,
mac->mc_dev->mc_handle, dpmac_state);
if (err)
netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
__func__, err);
}
static void dpaa2_mac_link_down(struct phylink_config *config,
unsigned int mode,
phy_interface_t interface)
{
struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
struct dpmac_link_state *dpmac_state = &mac->state;
int err;
dpmac_state->up = 0;
err = dpmac_set_link_state(mac->mc_io, 0,
mac->mc_dev->mc_handle, dpmac_state);
if (err)
netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
}
static const struct phylink_mac_ops dpaa2_mac_phylink_ops = {
.mac_select_pcs = dpaa2_mac_select_pcs,
.mac_config = dpaa2_mac_config,
.mac_link_up = dpaa2_mac_link_up,
.mac_link_down = dpaa2_mac_link_down,
};
static int dpaa2_pcs_create(struct dpaa2_mac *mac,
struct fwnode_handle *dpmac_node,
int id)
{
struct fwnode_handle *node;
struct phylink_pcs *pcs;
node = fwnode_find_reference(dpmac_node, "pcs-handle", 0);
if (IS_ERR(node)) {
/* do not error out on old DTS files */
netdev_warn(mac->net_dev, "pcs-handle node not found\n");
return 0;
}
pcs = lynx_pcs_create_fwnode(node);
fwnode_handle_put(node);
if (pcs == ERR_PTR(-EPROBE_DEFER)) {
netdev_dbg(mac->net_dev, "missing PCS device\n");
return -EPROBE_DEFER;
}
if (pcs == ERR_PTR(-ENODEV)) {
netdev_err(mac->net_dev, "pcs-handle node not available\n");
return PTR_ERR(pcs);
}
if (IS_ERR(pcs)) {
netdev_err(mac->net_dev,
"lynx_pcs_create_fwnode() failed: %pe\n", pcs);
return PTR_ERR(pcs);
}
mac->pcs = pcs;
return 0;
}
static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
{
struct phylink_pcs *phylink_pcs = mac->pcs;
if (phylink_pcs) {
lynx_pcs_destroy(phylink_pcs);
mac->pcs = NULL;
}
}
static void dpaa2_mac_set_supported_interfaces(struct dpaa2_mac *mac)
{
int intf, err;
/* We support the current interface mode, and if we have a PCS
* similar interface modes that do not require the SerDes lane to be
* reconfigured.
*/
__set_bit(mac->if_mode, mac->phylink_config.supported_interfaces);
if (mac->pcs) {
switch (mac->if_mode) {
case PHY_INTERFACE_MODE_1000BASEX:
case PHY_INTERFACE_MODE_SGMII:
__set_bit(PHY_INTERFACE_MODE_1000BASEX,
mac->phylink_config.supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_SGMII,
mac->phylink_config.supported_interfaces);
break;
default:
break;
}
}
if (!mac->serdes_phy)
return;
/* In case we have access to the SerDes phy/lane, then ask the SerDes
* driver what interfaces are supported based on the current PLL
* configuration.
*/
for (intf = 0; intf < PHY_INTERFACE_MODE_MAX; intf++) {
if (intf == PHY_INTERFACE_MODE_NA)
continue;
err = phy_validate(mac->serdes_phy, PHY_MODE_ETHERNET, intf, NULL);
if (err)
continue;
__set_bit(intf, mac->phylink_config.supported_interfaces);
}
}
void dpaa2_mac_start(struct dpaa2_mac *mac)
{
ASSERT_RTNL();
if (mac->serdes_phy)
phy_power_on(mac->serdes_phy);
phylink_start(mac->phylink);
}
void dpaa2_mac_stop(struct dpaa2_mac *mac)
{
ASSERT_RTNL();
phylink_stop(mac->phylink);
if (mac->serdes_phy)
phy_power_off(mac->serdes_phy);
}
int dpaa2_mac_connect(struct dpaa2_mac *mac)
{
struct net_device *net_dev = mac->net_dev;
struct fwnode_handle *dpmac_node;
struct phy *serdes_phy = NULL;
struct phylink *phylink;
int err;
mac->if_link_type = mac->attr.link_type;
dpmac_node = mac->fw_node;
if (!dpmac_node) {
netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id);
return -ENODEV;
}
err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr);
if (err < 0)
return -EINVAL;
mac->if_mode = err;
if (mac->features & DPAA2_MAC_FEATURE_PROTOCOL_CHANGE &&
!phy_interface_mode_is_rgmii(mac->if_mode) &&
is_of_node(dpmac_node)) {
serdes_phy = of_phy_get(to_of_node(dpmac_node), NULL);
if (serdes_phy == ERR_PTR(-ENODEV))
serdes_phy = NULL;
else if (IS_ERR(serdes_phy))
return PTR_ERR(serdes_phy);
else
phy_init(serdes_phy);
}
mac->serdes_phy = serdes_phy;
/* The MAC does not have the capability to add RGMII delays so
* error out if the interface mode requests them and there is no PHY
* to act upon them
*/
if (of_phy_is_fixed_link(to_of_node(dpmac_node)) &&
(mac->if_mode == PHY_INTERFACE_MODE_RGMII_ID ||
mac->if_mode == PHY_INTERFACE_MODE_RGMII_RXID ||
mac->if_mode == PHY_INTERFACE_MODE_RGMII_TXID)) {
netdev_err(net_dev, "RGMII delay not supported\n");
return -EINVAL;
}
if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
mac->attr.eth_if != DPMAC_ETH_IF_RGMII) ||
mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
if (err)
return err;
}
memset(&mac->phylink_config, 0, sizeof(mac->phylink_config));
mac->phylink_config.dev = &net_dev->dev;
mac->phylink_config.type = PHYLINK_NETDEV;
mac->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE |
MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD | MAC_5000FD |
MAC_10000FD | MAC_25000FD;
dpaa2_mac_set_supported_interfaces(mac);
phylink = phylink_create(&mac->phylink_config,
dpmac_node, mac->if_mode,
&dpaa2_mac_phylink_ops);
if (IS_ERR(phylink)) {
err = PTR_ERR(phylink);
goto err_pcs_destroy;
}
mac->phylink = phylink;
rtnl_lock();
err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
rtnl_unlock();
if (err) {
netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err);
goto err_phylink_destroy;
}
return 0;
err_phylink_destroy:
phylink_destroy(mac->phylink);
err_pcs_destroy:
dpaa2_pcs_destroy(mac);
return err;
}
void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
{
rtnl_lock();
phylink_disconnect_phy(mac->phylink);
rtnl_unlock();
phylink_destroy(mac->phylink);
dpaa2_pcs_destroy(mac);
of_phy_put(mac->serdes_phy);
mac->serdes_phy = NULL;
}
int dpaa2_mac_open(struct dpaa2_mac *mac)
{
struct fsl_mc_device *dpmac_dev = mac->mc_dev;
struct net_device *net_dev = mac->net_dev;
struct fwnode_handle *fw_node;
int err;
err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id,
&dpmac_dev->mc_handle);
if (err || !dpmac_dev->mc_handle) {
netdev_err(net_dev, "dpmac_open() = %d\n", err);
return -ENODEV;
}
err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle,
&mac->attr);
if (err) {
netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
goto err_close_dpmac;
}
err = dpmac_get_api_version(mac->mc_io, 0, &mac->ver_major, &mac->ver_minor);
if (err) {
netdev_err(net_dev, "dpmac_get_api_version() = %d\n", err);
goto err_close_dpmac;
}
dpaa2_mac_detect_features(mac);
/* Find the device node representing the MAC device and link the device
* behind the associated netdev to it.
*/
fw_node = dpaa2_mac_get_node(&mac->mc_dev->dev, mac->attr.id);
if (IS_ERR(fw_node)) {
err = PTR_ERR(fw_node);
goto err_close_dpmac;
}
mac->fw_node = fw_node;
net_dev->dev.of_node = to_of_node(mac->fw_node);
return 0;
err_close_dpmac:
dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
return err;
}
void dpaa2_mac_close(struct dpaa2_mac *mac)
{
struct fsl_mc_device *dpmac_dev = mac->mc_dev;
dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
if (mac->fw_node)
fwnode_handle_put(mac->fw_node);
}
static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = {
[DPMAC_CNT_ING_ALL_FRAME] = "[mac] rx all frames",
[DPMAC_CNT_ING_GOOD_FRAME] = "[mac] rx frames ok",
[DPMAC_CNT_ING_ERR_FRAME] = "[mac] rx frame errors",
[DPMAC_CNT_ING_FRAME_DISCARD] = "[mac] rx frame discards",
[DPMAC_CNT_ING_UCAST_FRAME] = "[mac] rx u-cast",
[DPMAC_CNT_ING_BCAST_FRAME] = "[mac] rx b-cast",
[DPMAC_CNT_ING_MCAST_FRAME] = "[mac] rx m-cast",
[DPMAC_CNT_ING_FRAME_64] = "[mac] rx 64 bytes",
[DPMAC_CNT_ING_FRAME_127] = "[mac] rx 65-127 bytes",
[DPMAC_CNT_ING_FRAME_255] = "[mac] rx 128-255 bytes",
[DPMAC_CNT_ING_FRAME_511] = "[mac] rx 256-511 bytes",
[DPMAC_CNT_ING_FRAME_1023] = "[mac] rx 512-1023 bytes",
[DPMAC_CNT_ING_FRAME_1518] = "[mac] rx 1024-1518 bytes",
[DPMAC_CNT_ING_FRAME_1519_MAX] = "[mac] rx 1519-max bytes",
[DPMAC_CNT_ING_FRAG] = "[mac] rx frags",
[DPMAC_CNT_ING_JABBER] = "[mac] rx jabber",
[DPMAC_CNT_ING_ALIGN_ERR] = "[mac] rx align errors",
[DPMAC_CNT_ING_OVERSIZED] = "[mac] rx oversized",
[DPMAC_CNT_ING_VALID_PAUSE_FRAME] = "[mac] rx pause",
[DPMAC_CNT_ING_BYTE] = "[mac] rx bytes",
[DPMAC_CNT_EGR_GOOD_FRAME] = "[mac] tx frames ok",
[DPMAC_CNT_EGR_UCAST_FRAME] = "[mac] tx u-cast",
[DPMAC_CNT_EGR_MCAST_FRAME] = "[mac] tx m-cast",
[DPMAC_CNT_EGR_BCAST_FRAME] = "[mac] tx b-cast",
[DPMAC_CNT_EGR_ERR_FRAME] = "[mac] tx frame errors",
[DPMAC_CNT_EGR_UNDERSIZED] = "[mac] tx undersized",
[DPMAC_CNT_EGR_VALID_PAUSE_FRAME] = "[mac] tx b-pause",
[DPMAC_CNT_EGR_BYTE] = "[mac] tx bytes",
};
#define DPAA2_MAC_NUM_STATS ARRAY_SIZE(dpaa2_mac_ethtool_stats)
int dpaa2_mac_get_sset_count(void)
{
return DPAA2_MAC_NUM_STATS;
}
void dpaa2_mac_get_strings(u8 *data)
{
u8 *p = data;
int i;
for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
strscpy(p, dpaa2_mac_ethtool_stats[i], ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
}
void dpaa2_mac_get_ethtool_stats(struct dpaa2_mac *mac, u64 *data)
{
struct fsl_mc_device *dpmac_dev = mac->mc_dev;
int i, err;
u64 value;
for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
err = dpmac_get_counter(mac->mc_io, 0, dpmac_dev->mc_handle,
i, &value);
if (err) {
netdev_err_once(mac->net_dev,
"dpmac_get_counter error %d\n", err);
*(data + i) = U64_MAX;
continue;
}
*(data + i) = value;
}
}