blob: ae6d382d87352a1c40fb498c8977bf04d82464d1 [file] [log] [blame]
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2019 NXP */
#include <linux/acpi.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)
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;
default:
return -EINVAL;
}
return 0;
}
static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
u16 dpmac_id)
{
struct fwnode_handle *fwnode, *parent, *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;
}
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 bool dpaa2_mac_phy_mode_mismatch(struct dpaa2_mac *mac,
phy_interface_t interface)
{
switch (interface) {
/* We can switch between SGMII and 1000BASE-X at runtime with
* pcs-lynx
*/
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_1000BASEX:
if (mac->pcs &&
(mac->if_mode == PHY_INTERFACE_MODE_SGMII ||
mac->if_mode == PHY_INTERFACE_MODE_1000BASEX))
return false;
return interface != mac->if_mode;
case PHY_INTERFACE_MODE_10GBASER:
case PHY_INTERFACE_MODE_USXGMII:
case PHY_INTERFACE_MODE_QSGMII:
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
return (interface != mac->if_mode);
default:
return true;
}
}
static void dpaa2_mac_validate(struct phylink_config *config,
unsigned long *supported,
struct phylink_link_state *state)
{
struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
if (state->interface != PHY_INTERFACE_MODE_NA &&
dpaa2_mac_phy_mode_mismatch(mac, state->interface)) {
goto empty_set;
}
phylink_set_port_modes(mask);
phylink_set(mask, Autoneg);
phylink_set(mask, Pause);
phylink_set(mask, Asym_Pause);
switch (state->interface) {
case PHY_INTERFACE_MODE_NA:
case PHY_INTERFACE_MODE_10GBASER:
case PHY_INTERFACE_MODE_USXGMII:
phylink_set(mask, 10000baseT_Full);
if (state->interface == PHY_INTERFACE_MODE_10GBASER)
break;
phylink_set(mask, 5000baseT_Full);
phylink_set(mask, 2500baseT_Full);
fallthrough;
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_QSGMII:
case PHY_INTERFACE_MODE_1000BASEX:
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
phylink_set(mask, 1000baseX_Full);
phylink_set(mask, 1000baseT_Full);
if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
break;
phylink_set(mask, 100baseT_Full);
phylink_set(mask, 10baseT_Full);
break;
default:
goto empty_set;
}
linkmode_and(supported, supported, mask);
linkmode_and(state->advertising, state->advertising, mask);
return;
empty_set:
linkmode_zero(supported);
}
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 (state->an_enabled)
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);
}
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 = {
.validate = dpaa2_mac_validate,
.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 mdio_device *mdiodev;
struct fwnode_handle *node;
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;
}
if (!fwnode_device_is_available(node)) {
netdev_err(mac->net_dev, "pcs-handle node not available\n");
fwnode_handle_put(node);
return -ENODEV;
}
mdiodev = fwnode_mdio_find_device(node);
fwnode_handle_put(node);
if (!mdiodev)
return -EPROBE_DEFER;
mac->pcs = lynx_pcs_create(mdiodev);
if (!mac->pcs) {
netdev_err(mac->net_dev, "lynx_pcs_create() failed\n");
put_device(&mdiodev->dev);
return -ENOMEM;
}
return 0;
}
static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
{
struct lynx_pcs *pcs = mac->pcs;
if (pcs) {
struct device *dev = &pcs->mdio->dev;
lynx_pcs_destroy(pcs);
put_device(dev);
mac->pcs = NULL;
}
}
int dpaa2_mac_connect(struct dpaa2_mac *mac)
{
struct net_device *net_dev = mac->net_dev;
struct fwnode_handle *dpmac_node;
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;
/* 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;
}
mac->phylink_config.dev = &net_dev->dev;
mac->phylink_config.type = PHYLINK_NETDEV;
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;
if (mac->pcs)
phylink_set_pcs(mac->phylink, &mac->pcs->pcs);
err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
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)
{
if (!mac->phylink)
return;
phylink_disconnect_phy(mac->phylink);
phylink_destroy(mac->phylink);
dpaa2_pcs_destroy(mac);
}
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;
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;
}
/* Find the device node representing the MAC device and link the device
* behind the associated netdev to it.
*/
mac->fw_node = dpaa2_mac_get_node(&mac->mc_dev->dev, mac->attr.id);
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++) {
strlcpy(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;
}
}