From 9e4ab4c29a62d2ccbf4be42707669be2f42d391c Mon Sep 17 00:00:00 2001 From: Brett Creeley Date: Wed, 19 Sep 2018 17:23:19 -0700 Subject: ice: Add support for dynamic interrupt moderation Currently there is no support for dynamic interrupt moderation. This patch adds some initial code to support this. The following changes were made: 1. Currently we are using multiple members to store the interrupt granularity (itr_gran_25/50/100/200). This is not necessary because we can query the device to determine what the interrupt granularity should be set to, done by a new function ice_get_itr_intrl_gran. 2. Added intrl to ice_q_vector structure to support interrupt rate limiting. 3. Added the function ice_intrl_usecs_to_reg for converting to a value in usecs that the device understands. 4. Added call to write to the GLINT_RATE register. Disable intrl by default for now. 5. Changed rx/tx_itr_setting to itr_setting because having both seems redundant because a ring is either Tx or Rx. 6. Initialize itr_setting for both Tx/Rx rings in ice_vsi_alloc_rings() Signed-off-by: Brett Creeley Signed-off-by: Anirudh Venkataramanan Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ice/ice_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet/intel/ice/ice_main.c') diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index f51857ead0f3..9638684f75ac 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -1406,7 +1406,7 @@ skip_req_irq: PFINT_FW_CTL_CAUSE_ENA_M); wr32(hw, PFINT_FW_CTL, val); - itr_gran = hw->itr_gran_200; + itr_gran = hw->itr_gran; wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->hw_oicr_idx), ITR_TO_REG(ICE_ITR_8K, itr_gran)); -- cgit