/*
* This routine is used to set interrup coalescing delay
*/
static int
be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
{
struct be_adapter *adapter = netdev_priv(netdev);
struct be_eq_obj *rx_eq = &adapter->rx_eq;
struct be_eq_obj *tx_eq = &adapter->tx_eq;
u32 tx_max, tx_min, tx_cur;
u32 rx_max, rx_min, rx_cur;
int status = 0;
if (coalesce->use_adaptive_tx_coalesce == 1)
return -EINVAL;
/* if AIC is being turned on now, start with an EQD of 0 */
if (rx_eq->enable_aic == 0 &&
coalesce->use_adaptive_rx_coalesce == 1) {
rx_eq->cur_eqd = 0;
}
rx_eq->enable_aic = coalesce->use_adaptive_rx_coalesce;
rx_max = coalesce->rx_coalesce_usecs_high;
rx_min = coalesce->rx_coalesce_usecs_low;
rx_cur = coalesce->rx_coalesce_usecs;
tx_max = coalesce->tx_coalesce_usecs_high;
tx_min = coalesce->tx_coalesce_usecs_low;
tx_cur = coalesce->tx_coalesce_usecs;
if (tx_cur > BE_MAX_EQD)
tx_cur = BE_MAX_EQD;
if (tx_eq->cur_eqd != tx_cur) {
status = be_cmd_modify_eqd(adapter, tx_eq->q.id, tx_cur);
if (!status)
tx_eq->cur_eqd = tx_cur;
}
if (rx_eq->enable_aic) {
if (rx_max > BE_MAX_EQD)
rx_max = BE_MAX_EQD;
if (rx_min > rx_max)
rx_min = rx_max;
rx_eq->max_eqd = rx_max;
rx_eq->min_eqd = rx_min;
if (rx_eq->cur_eqd > rx_max)
rx_eq->cur_eqd = rx_max;
if (rx_eq->cur_eqd < rx_min)
rx_eq->cur_eqd = rx_min;
} else {
if (rx_cur > BE_MAX_EQD)
rx_cur = BE_MAX_EQD;
if (rx_eq->cur_eqd != rx_cur) {
status = be_cmd_modify_eqd(adapter, rx_eq->q.id,
rx_cur);
if (!status)
rx_eq->cur_eqd = rx_cur;
}
}
return 0;
}
/* Update the EQ delay n BE based on the RX frags consumed / sec */
static void be_rx_eqd_update(struct be_adapter *adapter)
{
u32 eqd;
struct be_ctrl_info *ctrl = &adapter->ctrl;
struct be_eq_obj *rx_eq = &adapter->rx_eq;
struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
/* Update once a second */
if (((jiffies - stats->rx_fps_jiffies) < HZ) || rx_eq->enable_aic == 0)
return;
stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
((jiffies - stats->rx_fps_jiffies) / HZ);
stats->rx_fps_jiffies = jiffies;
stats->be_prev_rx_frags = stats->be_rx_frags;
eqd = stats->be_rx_fps / 110000;
eqd = eqd << 3;
if (eqd > rx_eq->max_eqd)
eqd = rx_eq->max_eqd;
if (eqd < rx_eq->min_eqd)
eqd = rx_eq->min_eqd;
if (eqd < 10)
eqd = 0;
if (eqd != rx_eq->cur_eqd)
be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
rx_eq->cur_eqd = eqd;
}
/*
* This routine is used to set interrup coalescing delay
*/
static int
be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
{
struct be_adapter *adapter = netdev_priv(netdev);
struct be_rx_obj *rxo;
struct be_eq_obj *rx_eq;
struct be_eq_obj *tx_eq = &adapter->tx_eq;
u32 tx_max, tx_min, tx_cur;
u32 rx_max, rx_min, rx_cur;
int status = 0, i;
if (coalesce->use_adaptive_tx_coalesce == 1)
return -EINVAL;
for_all_rx_queues(adapter, rxo, i) {
rx_eq = &rxo->rx_eq;
if (!rx_eq->enable_aic && coalesce->use_adaptive_rx_coalesce)
rx_eq->cur_eqd = 0;
rx_eq->enable_aic = coalesce->use_adaptive_rx_coalesce;
rx_max = coalesce->rx_coalesce_usecs_high;
rx_min = coalesce->rx_coalesce_usecs_low;
rx_cur = coalesce->rx_coalesce_usecs;
if (rx_eq->enable_aic) {
if (rx_max > BE_MAX_EQD)
rx_max = BE_MAX_EQD;
if (rx_min > rx_max)
rx_min = rx_max;
rx_eq->max_eqd = rx_max;
rx_eq->min_eqd = rx_min;
if (rx_eq->cur_eqd > rx_max)
rx_eq->cur_eqd = rx_max;
if (rx_eq->cur_eqd < rx_min)
rx_eq->cur_eqd = rx_min;
} else {
if (rx_cur > BE_MAX_EQD)
rx_cur = BE_MAX_EQD;
if (rx_eq->cur_eqd != rx_cur) {
status = be_cmd_modify_eqd(adapter, rx_eq->q.id,
rx_cur);
if (!status)
rx_eq->cur_eqd = rx_cur;
}
}
}
/* Update the EQ delay n BE based on the RX frags consumed / sec */
static void be_rx_eqd_update(struct be_adapter *adapter)
{
struct be_ctrl_info *ctrl = &adapter->ctrl;
struct be_eq_obj *rx_eq = &adapter->rx_eq;
struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
ulong now = jiffies;
u32 eqd;
if (!rx_eq->enable_aic)
return;
/* Wrapped around */
if (time_before(now, stats->rx_fps_jiffies)) {
stats->rx_fps_jiffies = now;
return;
}
/* Update once a second */
if ((now - stats->rx_fps_jiffies) < HZ)
return;
stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
((now - stats->rx_fps_jiffies) / HZ);
stats->rx_fps_jiffies = now;
stats->be_prev_rx_frags = stats->be_rx_frags;
eqd = stats->be_rx_fps / 110000;
eqd = eqd << 3;
if (eqd > rx_eq->max_eqd)
eqd = rx_eq->max_eqd;
if (eqd < rx_eq->min_eqd)
eqd = rx_eq->min_eqd;
if (eqd < 10)
eqd = 0;
if (eqd != rx_eq->cur_eqd)
be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
rx_eq->cur_eqd = eqd;
}
