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ice: Add a helper to trigger software interrupt 

Add a new function ice_trigger_sw_intr to trigger interrupts.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Brett Creeley 2019-04-16 10:30:51 -07:00 committed by Jeff Kirsher
parent 3a9e32bb06
commit e89e899f3e
3 changed files with 25 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/net/ethernet/intel/ice/ice_lib.c
View File

@ -2018,6 +2018,19 @@ int ice_vsi_stop_rx_rings(struct ice_vsi *vsi)
return ice_vsi_ctrl_rx_rings(vsi, false);
}
/**
* ice_trigger_sw_intr - trigger a software interrupt
* @hw: pointer to the HW structure
* @q_vector: interrupt vector to trigger the software interrupt for
*/
void ice_trigger_sw_intr(struct ice_hw *hw, struct ice_q_vector *q_vector)
{
wr32(hw, GLINT_DYN_CTL(q_vector->reg_idx),
(ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S) |
GLINT_DYN_CTL_SWINT_TRIG_M |
GLINT_DYN_CTL_INTENA_M);
}
/**
* ice_vsi_stop_tx_rings - Disable Tx rings
* @vsi: the VSI being configured
@ -2065,6 +2078,8 @@ ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
break;
for (i = 0; i < vsi->tc_cfg.tc_info[tc].qcount_tx; i++) {
struct ice_q_vector *q_vector;
if (!rings || !rings[q_idx]) {
err = -EINVAL;
goto err_out;
@ -2085,13 +2100,10 @@ ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
/* trigger a software interrupt for the vector
* associated to the queue to schedule NAPI handler
*/
if (rings[q_idx]->q_vector) {
int reg_idx = rings[i]->q_vector->reg_idx;
q_vector = rings[i]->q_vector;
if (q_vector)
ice_trigger_sw_intr(hw, q_vector);
wr32(hw, GLINT_DYN_CTL(reg_idx),
GLINT_DYN_CTL_SWINT_TRIG_M |
GLINT_DYN_CTL_INTENA_MSK_M);
}
q_idx++;
}
status = ice_dis_vsi_txq(vsi->port_info, vsi->idx, tc,

2
drivers/net/ethernet/intel/ice/ice_lib.h
View File

@ -64,6 +64,8 @@ bool ice_is_reset_in_progress(unsigned long *state);
void ice_vsi_free_q_vectors(struct ice_vsi *vsi);
void ice_trigger_sw_intr(struct ice_hw *hw, struct ice_q_vector *q_vector);
void ice_vsi_put_qs(struct ice_vsi *vsi);
#ifdef CONFIG_DCB

14
drivers/net/ethernet/intel/ice/ice_main.c
View File

@ -61,9 +61,10 @@ static u32 ice_get_tx_pending(struct ice_ring *ring)
static void ice_check_for_hang_subtask(struct ice_pf *pf)
{
struct ice_vsi *vsi = NULL;
struct ice_hw *hw;
unsigned int i;
u32 v, v_idx;
int packets;
u32 v;
ice_for_each_vsi(pf, v)
if (pf->vsi[v] && pf->vsi[v]->type == ICE_VSI_PF) {
@ -77,12 +78,12 @@ static void ice_check_for_hang_subtask(struct ice_pf *pf)
if (!(vsi->netdev && netif_carrier_ok(vsi->netdev)))
return;
hw = &vsi->back->hw;
for (i = 0; i < vsi->num_txq; i++) {
struct ice_ring *tx_ring = vsi->tx_rings[i];
if (tx_ring && tx_ring->desc) {
int itr = ICE_ITR_NONE;
/* If packet counter has not changed the queue is
* likely stalled, so force an interrupt for this
* queue.
@ -93,12 +94,7 @@ static void ice_check_for_hang_subtask(struct ice_pf *pf)
packets = tx_ring->stats.pkts & INT_MAX;
if (tx_ring->tx_stats.prev_pkt == packets) {
/* Trigger sw interrupt to revive the queue */
v_idx = tx_ring->q_vector->v_idx;
wr32(&vsi->back->hw,
GLINT_DYN_CTL(vsi->base_vector + v_idx),
(itr << GLINT_DYN_CTL_ITR_INDX_S) |
GLINT_DYN_CTL_SWINT_TRIG_M |
GLINT_DYN_CTL_INTENA_MSK_M);
ice_trigger_sw_intr(hw, tx_ring->q_vector);
continue;
}