diff options
| author | Alexander Lobakin <aleksander.lobakin@intel.com> | 2025-08-26 17:55:01 +0200 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2025-09-08 11:05:17 -0700 |
| commit | a0c60b07904c2e213400ffbe4df4849c03a976d0 (patch) | |
| tree | 2dd3c05b4cd834093427ec9e50874c14866017a8 /drivers/net/ethernet/intel/idpf/idpf_dev.c | |
| parent | 9d39447051a0decaf90ba520611ee0e4644a94d5 (diff) | |
idpf: add support for nointerrupt queues
Currently, queues are associated 1:1 with interrupt vectors as it's
assumed queues are always interrupt-driven. For XDP, we want to use
Tx queues without interrupts and only do "lazy" cleaning when the number
of free elements is <= threshold (closest pow-2 to 1/4 of the ring).
In order to use a queue without an interrupt, idpf still needs to have
a vector assigned to it to flush descriptors. This vector can be global
and only one for the whole vport to handle all its noirq queues.
Always request one excessive vector and configure it in non-interrupt
mode right away when creating vport, so that it can be used later by
queues when needed (not only XDP ones).
Co-developed-by: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Tested-by: Ramu R <ramu.r@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/idpf/idpf_dev.c')
| -rw-r--r-- | drivers/net/ethernet/intel/idpf/idpf_dev.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/idpf/idpf_dev.c b/drivers/net/ethernet/intel/idpf/idpf_dev.c index bfa60f7d43de..3a04a6bd0d7c 100644 --- a/drivers/net/ethernet/intel/idpf/idpf_dev.c +++ b/drivers/net/ethernet/intel/idpf/idpf_dev.c @@ -77,7 +77,7 @@ static int idpf_intr_reg_init(struct idpf_vport *vport) int num_vecs = vport->num_q_vectors; struct idpf_vec_regs *reg_vals; int num_regs, i, err = 0; - u32 rx_itr, tx_itr; + u32 rx_itr, tx_itr, val; u16 total_vecs; total_vecs = idpf_get_reserved_vecs(vport->adapter); @@ -121,6 +121,15 @@ static int idpf_intr_reg_init(struct idpf_vport *vport) intr->tx_itr = idpf_get_reg_addr(adapter, tx_itr); } + /* Data vector for NOIRQ queues */ + + val = reg_vals[vport->q_vector_idxs[i] - IDPF_MBX_Q_VEC].dyn_ctl_reg; + vport->noirq_dyn_ctl = idpf_get_reg_addr(adapter, val); + + val = PF_GLINT_DYN_CTL_WB_ON_ITR_M | PF_GLINT_DYN_CTL_INTENA_MSK_M | + FIELD_PREP(PF_GLINT_DYN_CTL_ITR_INDX_M, IDPF_NO_ITR_UPDATE_IDX); + vport->noirq_dyn_ctl_ena = val; + free_reg_vals: kfree(reg_vals); |