static int txc43128_phy_reconfigure(struct efx_nic *efx)
{
struct txc43128_data *phy_data = efx->phy_data;
enum efx_phy_mode mode_change = efx->phy_mode ^ phy_data->phy_mode;
bool loop_change = LOOPBACK_CHANGED(phy_data, efx, TXC_LOOPBACKS);
if (efx->phy_mode & mode_change & PHY_MODE_TX_DISABLED) {
txc_reset_phy(efx);
txc_apply_defaults(efx);
falcon_reset_xaui(efx);
mode_change &= ~PHY_MODE_TX_DISABLED;
}
efx_mdio_transmit_disable(efx);
efx_mdio_phy_reconfigure(efx);
if (mode_change & PHY_MODE_LOW_POWER)
txc_set_power(efx);
/* The data sheet claims this is required after every reconfiguration
* (note at end of 7.1), but we mustn't do it when nothing changes as
* it glitches the link, and reconfigure gets called on link change,
* so we get an IRQ storm on link up. */
if (loop_change || mode_change)
txc_reset_logic(efx);
phy_data->phy_mode = efx->phy_mode;
phy_data->loopback_mode = efx->loopback_mode;
return 0;
}
/* Push the non-configurable defaults into the PHY. This must be
* done after every full reset */
static void txc_apply_defaults(struct efx_nic *efx)
{
int mctrl;
/* Turn amplitude down and preemphasis off on the host side
* (PHY<->MAC) as this is believed less likely to upset Falcon
* and no adverse effects have been noted. It probably also
* saves a picowatt or two */
/* Turn off preemphasis */
efx_mdio_write(efx, MDIO_MMD_PHYXS, TXC_ALRGS_ATXPRE0, TXC_ATXPRE_NONE);
efx_mdio_write(efx, MDIO_MMD_PHYXS, TXC_ALRGS_ATXPRE1, TXC_ATXPRE_NONE);
/* Turn down the amplitude */
efx_mdio_write(efx, MDIO_MMD_PHYXS,
TXC_ALRGS_ATXAMP0, TXC_ATXAMP_0820_BOTH);
efx_mdio_write(efx, MDIO_MMD_PHYXS,
TXC_ALRGS_ATXAMP1, TXC_ATXAMP_0820_BOTH);
/* Set the line side amplitude and preemphasis to the databook
* defaults as an erratum causes them to be 0 on at least some
* PHY rev.s */
efx_mdio_write(efx, MDIO_MMD_PMAPMD,
TXC_ALRGS_ATXPRE0, TXC_ATXPRE_DEFAULT);
efx_mdio_write(efx, MDIO_MMD_PMAPMD,
TXC_ALRGS_ATXPRE1, TXC_ATXPRE_DEFAULT);
efx_mdio_write(efx, MDIO_MMD_PMAPMD,
TXC_ALRGS_ATXAMP0, TXC_ATXAMP_DEFAULT);
efx_mdio_write(efx, MDIO_MMD_PMAPMD,
TXC_ALRGS_ATXAMP1, TXC_ATXAMP_DEFAULT);
/* Set up the LEDs */
mctrl = efx_mdio_read(efx, MDIO_MMD_PHYXS, TXC_MRGS_CTL);
/* Set the Green and Red LEDs to their default modes */
mctrl &= ~((1 << TXC_MCTL_TXLED_LBN) | (1 << TXC_MCTL_RXLED_LBN));
efx_mdio_write(efx, MDIO_MMD_PHYXS, TXC_MRGS_CTL, mctrl);
/* Databook recommends doing this after configuration changes */
txc_reset_logic(efx);
falcon_board(efx)->type->init_phy(efx);
}
/* Periodic callback: this exists mainly to poll link status as we
* don't use LASI interrupts */
static bool txc43128_phy_poll(struct efx_nic *efx)
{
struct txc43128_data *data = efx->phy_data;
bool was_up = efx->link_state.up;
efx->link_state.up = txc43128_phy_read_link(efx);
efx->link_state.speed = 10000;
efx->link_state.fd = true;
efx->link_state.fc = efx->wanted_fc;
if (efx->link_state.up || (efx->loopback_mode != LOOPBACK_NONE)) {
data->bug10934_timer = jiffies;
} else {
if (time_after_eq(jiffies, (data->bug10934_timer +
BUG10934_RESET_INTERVAL))) {
data->bug10934_timer = jiffies;
txc_reset_logic(efx);
}
}
return efx->link_state.up != was_up;
}
/* Periodic callback: this exists mainly to poll link status as we currently
* don't use LASI interrupts. Also update the BER counters and poll the lm87 */
static bool txc43128_phy_poll(struct efx_nic *efx)
{
struct txc43128_data *data = efx->phy_data;
bool was_up = efx->link_state.up;
efx->link_state.up = txc43128_phy_read_link(efx);
efx->link_state.speed = 10000;
efx->link_state.fd = true;
efx->link_state.fc = efx->wanted_fc;
if (EFX_WORKAROUND_10934(efx)) {
if (efx->link_state.up || (efx->loopback_mode != LOOPBACK_NONE))
data->bug10934_timer = jiffies;
else {
int delta = jiffies - data->bug10934_timer;
if (delta >= BUG10934_RESET_INTERVAL) {
data->bug10934_timer = jiffies;
txc_reset_logic(efx);
}
}
}
return efx->link_state.up != was_up;
}
