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// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2019 NXP */
#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;
default:
return -EINVAL;
}
return 0;
}
/* Caller must call of_node_put on the returned value */
static struct device_node *dpaa2_mac_get_node(u16 dpmac_id)
{
struct device_node *dpmacs, *dpmac = NULL;
u32 id;
int err;
dpmacs = of_find_node_by_name(NULL, "dpmacs");
if (!dpmacs)
return NULL;
while ((dpmac = of_get_next_child(dpmacs, dpmac)) != NULL) {
err = of_property_read_u32(dpmac, "reg", &id);
if (err)
continue;
if (id == dpmac_id)
break;
}
of_node_put(dpmacs);
return dpmac;
}
static int dpaa2_mac_get_if_mode(struct device_node *node,
struct dpmac_attr attr)
{
phy_interface_t if_mode;
int err;
err = of_get_phy_mode(node, &if_mode);
if (!err)
return if_mode;
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) {
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_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
phylink_set(mask, 10baseT_Full);
phylink_set(mask, 100baseT_Full);
phylink_set(mask, 1000baseT_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;
if (mac->if_link_type == DPMAC_LINK_TYPE_PHY) {
/* If the DPMAC is configured for PHY mode, we need
* to pass the link parameters to the MC firmware.
*/
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;
/* This is lossy; the firmware really should take the pause
* enablement status rather than pause/asym pause status.
*/
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,
};
bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,
struct fsl_mc_io *mc_io)
{
struct dpmac_attr attr;
bool fixed = false;
u16 mc_handle = 0;
int err;
err = dpmac_open(mc_io, 0, dpmac_dev->obj_desc.id,
&mc_handle);
if (err || !mc_handle)
return false;
err = dpmac_get_attributes(mc_io, 0, mc_handle, &attr);
if (err)
goto out;
if (attr.link_type == DPMAC_LINK_TYPE_FIXED)
fixed = true;
out:
dpmac_close(mc_io, 0, mc_handle);
return fixed;
}
int dpaa2_mac_connect(struct dpaa2_mac *mac)
{
struct fsl_mc_device *dpmac_dev = mac->mc_dev;
struct net_device *net_dev = mac->net_dev;
struct device_node *dpmac_node;
struct phylink *phylink;
struct dpmac_attr attr;
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, &attr);
if (err) {
netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
goto err_close_dpmac;
}
mac->if_link_type = attr.link_type;
dpmac_node = dpaa2_mac_get_node(attr.id);
if (!dpmac_node) {
netdev_err(net_dev, "No dpmac@%d node found.\n", attr.id);
err = -ENODEV;
goto err_close_dpmac;
}
err =
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