/** * ixgbe_dcb_config_rx_arbiter_82598 - Config Rx data arbiter * @hw: pointer to hardware structure * @refill: refill credits index by traffic class * @max: max credits index by traffic class * @prio_type: priority type indexed by traffic class * * Configure Rx Data Arbiter and credits for each traffic class.
*/ int ixgbe_dcb_config_rx_arbiter_82598(struct ixgbe_hw *hw, u16 *refill,
u16 *max, u8 *prio_type)
{
u32 reg = 0;
u32 credit_refill = 0;
u32 credit_max = 0;
u8 i = 0;
reg = IXGBE_READ_REG(hw, IXGBE_RXCTRL); /* Make sure there is enough descriptors before arbitration */
reg &= ~IXGBE_RXCTRL_DMBYPS;
IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg);
return 0;
}
/** * ixgbe_dcb_config_tx_desc_arbiter_82598 - Config Tx Desc. arbiter * @hw: pointer to hardware structure * @refill: refill credits index by traffic class * @max: max credits index by traffic class * @bwg_id: bandwidth grouping indexed by traffic class * @prio_type: priority type indexed by traffic class * * Configure Tx Descriptor Arbiter and credits for each traffic class.
*/ int ixgbe_dcb_config_tx_desc_arbiter_82598(struct ixgbe_hw *hw, u16 *refill,
u16 *max, u8 *bwg_id, u8 *prio_type)
{
u32 reg, max_credits;
u8 i;
/* Configure Max TSO packet size 34KB including payload and headers */
reg |= (0x4 << IXGBE_DPMCS_MTSOS_SHIFT);
IXGBE_WRITE_REG(hw, IXGBE_DPMCS, reg);
/* Configure traffic class credits and priority */ for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
max_credits = max[i];
reg = max_credits << IXGBE_TDTQ2TCCR_MCL_SHIFT;
reg |= refill[i];
reg |= (u32)(bwg_id[i]) << IXGBE_TDTQ2TCCR_BWG_SHIFT;
if (prio_type[i] == prio_group)
reg |= IXGBE_TDTQ2TCCR_GSP;
if (prio_type[i] == prio_link)
reg |= IXGBE_TDTQ2TCCR_LSP;
IXGBE_WRITE_REG(hw, IXGBE_TDTQ2TCCR(i), reg);
}
return 0;
}
/** * ixgbe_dcb_config_tx_data_arbiter_82598 - Config Tx data arbiter * @hw: pointer to hardware structure * @refill: refill credits index by traffic class * @max: max credits index by traffic class * @bwg_id: bandwidth grouping indexed by traffic class * @prio_type: priority type indexed by traffic class * * Configure Tx Data Arbiter and credits for each traffic class.
*/ int ixgbe_dcb_config_tx_data_arbiter_82598(struct ixgbe_hw *hw, u16 *refill,
u16 *max, u8 *bwg_id, u8 *prio_type)
{
u32 reg;
u8 i;
/* Configure pause time */
reg = hw->fc.pause_time * 0x00010001; for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
/* Configure flow control refresh threshold value */
IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
return 0;
}
/** * ixgbe_dcb_config_tc_stats_82598 - Configure traffic class statistics * @hw: pointer to hardware structure * * Configure queue statistics registers, all queues belonging to same traffic * class uses a single set of queue statistics counters.
*/ staticint ixgbe_dcb_config_tc_stats_82598(struct ixgbe_hw *hw)
{
u32 reg = 0;
u8 i = 0;
u8 j = 0;
/* Receive Queues stats setting - 8 queues per statistics reg */ for (i = 0, j = 0; i < 15 && j < 8; i = i + 2, j++) {
reg = IXGBE_READ_REG(hw, IXGBE_RQSMR(i));
reg |= ((0x1010101) * j);
IXGBE_WRITE_REG(hw, IXGBE_RQSMR(i), reg);
reg = IXGBE_READ_REG(hw, IXGBE_RQSMR(i + 1));
reg |= ((0x1010101) * j);
IXGBE_WRITE_REG(hw, IXGBE_RQSMR(i + 1), reg);
} /* Transmit Queues stats setting - 4 queues per statistics reg */ for (i = 0; i < 8; i++) {
reg = IXGBE_READ_REG(hw, IXGBE_TQSMR(i));
reg |= ((0x1010101) * i);
IXGBE_WRITE_REG(hw, IXGBE_TQSMR(i), reg);
}
return 0;
}
/** * ixgbe_dcb_hw_config_82598 - Config and enable DCB * @hw: pointer to hardware structure * @pfc_en: enabled pfc bitmask * @refill: refill credits index by traffic class * @max: max credits index by traffic class * @bwg_id: bandwidth grouping indexed by traffic class * @prio_type: priority type indexed by traffic class * * Configure dcb settings and enable dcb mode.
*/ int ixgbe_dcb_hw_config_82598(struct ixgbe_hw *hw, u8 pfc_en, u16 *refill,
u16 *max, u8 *bwg_id, u8 *prio_type)
{
ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, prio_type);
ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max,
bwg_id, prio_type);
ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max,
bwg_id, prio_type);
ixgbe_dcb_config_pfc_82598(hw, pfc_en);
ixgbe_dcb_config_tc_stats_82598(hw);
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