diff options
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_dcb_82599.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_dcb_82599.c | 119 |
1 files changed, 1 insertions, 118 deletions
diff --git a/drivers/net/ixgbe/ixgbe_dcb_82599.c b/drivers/net/ixgbe/ixgbe_dcb_82599.c index d50cf78c234..ade98200288 100644 --- a/drivers/net/ixgbe/ixgbe_dcb_82599.c +++ b/drivers/net/ixgbe/ixgbe_dcb_82599.c @@ -31,63 +31,6 @@ #include "ixgbe_dcb_82599.h" /** - * ixgbe_dcb_config_packet_buffers_82599 - Configure DCB packet buffers - * @hw: pointer to hardware structure - * @rx_pba: method to distribute packet buffer - * - * Configure packet buffers for DCB mode. - */ -static s32 ixgbe_dcb_config_packet_buffers_82599(struct ixgbe_hw *hw, u8 rx_pba) -{ - int num_tcs = IXGBE_MAX_PACKET_BUFFERS; - u32 rx_pb_size = hw->mac.rx_pb_size << IXGBE_RXPBSIZE_SHIFT; - u32 rxpktsize; - u32 txpktsize; - u32 txpbthresh; - u8 i = 0; - - /* - * This really means configure the first half of the TCs - * (Traffic Classes) to use 5/8 of the Rx packet buffer - * space. To determine the size of the buffer for each TC, - * we are multiplying the average size by 5/4 and applying - * it to half of the traffic classes. - */ - if (rx_pba == pba_80_48) { - rxpktsize = (rx_pb_size * 5) / (num_tcs * 4); - rx_pb_size -= rxpktsize * (num_tcs / 2); - for (; i < (num_tcs / 2); i++) - IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); - } - - /* Divide the remaining Rx packet buffer evenly among the TCs */ - rxpktsize = rx_pb_size / (num_tcs - i); - for (; i < num_tcs; i++) - IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize); - - /* - * Setup Tx packet buffer and threshold equally for all TCs - * TXPBTHRESH register is set in K so divide by 1024 and subtract - * 10 since the largest packet we support is just over 9K. - */ - txpktsize = IXGBE_TXPBSIZE_MAX / num_tcs; - txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX; - for (i = 0; i < num_tcs; i++) { - IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize); - IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh); - } - - /* Clear unused TCs, if any, to zero buffer size*/ - for (; i < MAX_TRAFFIC_CLASS; i++) { - IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0); - IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0); - IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0); - } - - return 0; -} - -/** * ixgbe_dcb_config_rx_arbiter_82599 - Config Rx Data arbiter * @hw: pointer to hardware structure * @refill: refill credits index by traffic class @@ -376,65 +319,8 @@ static s32 ixgbe_dcb_config_tc_stats_82599(struct ixgbe_hw *hw) } /** - * ixgbe_dcb_config_82599 - Configure general DCB parameters - * @hw: pointer to hardware structure - * - * Configure general DCB parameters. - */ -static s32 ixgbe_dcb_config_82599(struct ixgbe_hw *hw) -{ - u32 reg; - u32 q; - - /* Disable the Tx desc arbiter so that MTQC can be changed */ - reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS); - reg |= IXGBE_RTTDCS_ARBDIS; - IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg); - - /* Enable DCB for Rx with 8 TCs */ - reg = IXGBE_READ_REG(hw, IXGBE_MRQC); - switch (reg & IXGBE_MRQC_MRQE_MASK) { - case 0: - case IXGBE_MRQC_RT4TCEN: - /* RSS disabled cases */ - reg = (reg & ~IXGBE_MRQC_MRQE_MASK) | IXGBE_MRQC_RT8TCEN; - break; - case IXGBE_MRQC_RSSEN: - case IXGBE_MRQC_RTRSS4TCEN: - /* RSS enabled cases */ - reg = (reg & ~IXGBE_MRQC_MRQE_MASK) | IXGBE_MRQC_RTRSS8TCEN; - break; - default: - /* Unsupported value, assume stale data, overwrite no RSS */ - reg = (reg & ~IXGBE_MRQC_MRQE_MASK) | IXGBE_MRQC_RT8TCEN; - } - IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg); - - /* Enable DCB for Tx with 8 TCs */ - reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; - IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg); - - /* Disable drop for all queues */ - for (q = 0; q < 128; q++) - IXGBE_WRITE_REG(hw, IXGBE_QDE, q << IXGBE_QDE_IDX_SHIFT); - - /* Enable the Tx desc arbiter */ - reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS); - reg &= ~IXGBE_RTTDCS_ARBDIS; - IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg); - - /* Enable Security TX Buffer IFG for DCB */ - reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); - reg |= IXGBE_SECTX_DCB; - IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg); - - return 0; -} - -/** * ixgbe_dcb_hw_config_82599 - Configure and enable DCB * @hw: pointer to hardware structure - * @rx_pba: method to distribute packet buffer * @refill: refill credits index by traffic class * @max: max credits index by traffic class * @bwg_id: bandwidth grouping indexed by traffic class @@ -443,12 +329,9 @@ static s32 ixgbe_dcb_config_82599(struct ixgbe_hw *hw) * * Configure dcb settings and enable dcb mode. */ -s32 ixgbe_dcb_hw_config_82599(struct ixgbe_hw *hw, - u8 rx_pba, u8 pfc_en, u16 *refill, +s32 ixgbe_dcb_hw_config_82599(struct ixgbe_hw *hw, u8 pfc_en, u16 *refill, u16 *max, u8 *bwg_id, u8 *prio_type, u8 *prio_tc) { - ixgbe_dcb_config_packet_buffers_82599(hw, rx_pba); - ixgbe_dcb_config_82599(hw); ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id, prio_type, prio_tc); ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, |