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authorEdward Cree <ecree@solarflare.com>2020-07-27 12:58:02 +0100
committerDavid S. Miller <davem@davemloft.net>2020-07-27 12:26:55 -0700
commit5e4ef67346ee8f64b3cac4cbc1c866fd8f18dcd7 (patch)
tree7d001963aab831f573b3c29b9de2674887789ec2 /drivers
parent965b549f3c20dba97c206937f163379ee44c9c04 (diff)
downloadlinux-5e4ef67346ee8f64b3cac4cbc1c866fd8f18dcd7.tar.bz2
sfc_ef100: process events for MCDI completions
Currently RX and TX-completion events are unhandled, as neither the RX nor the TX path has been implemented yet. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/sfc/ef100_nic.c57
1 files changed, 56 insertions, 1 deletions
diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index be37055743c3..c6703527bbe9 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -160,7 +160,62 @@ static void ef100_ev_read_ack(struct efx_channel *channel)
static int ef100_ev_process(struct efx_channel *channel, int quota)
{
- return 0;
+ struct efx_nic *efx = channel->efx;
+ struct ef100_nic_data *nic_data;
+ bool evq_phase, old_evq_phase;
+ unsigned int read_ptr;
+ efx_qword_t *p_event;
+ int spent = 0;
+ bool ev_phase;
+ int ev_type;
+
+ if (unlikely(!channel->enabled))
+ return 0;
+
+ nic_data = efx->nic_data;
+ evq_phase = test_bit(channel->channel, nic_data->evq_phases);
+ old_evq_phase = evq_phase;
+ read_ptr = channel->eventq_read_ptr;
+ BUILD_BUG_ON(ESF_GZ_EV_RXPKTS_PHASE_LBN != ESF_GZ_EV_TXCMPL_PHASE_LBN);
+
+ while (spent < quota) {
+ p_event = efx_event(channel, read_ptr);
+
+ ev_phase = !!EFX_QWORD_FIELD(*p_event, ESF_GZ_EV_RXPKTS_PHASE);
+ if (ev_phase != evq_phase)
+ break;
+
+ netif_vdbg(efx, drv, efx->net_dev,
+ "processing event on %d " EFX_QWORD_FMT "\n",
+ channel->channel, EFX_QWORD_VAL(*p_event));
+
+ ev_type = EFX_QWORD_FIELD(*p_event, ESF_GZ_E_TYPE);
+
+ switch (ev_type) {
+ case ESE_GZ_EF100_EV_MCDI:
+ efx_mcdi_process_event(channel, p_event);
+ break;
+ case ESE_GZ_EF100_EV_DRIVER:
+ netif_info(efx, drv, efx->net_dev,
+ "Driver initiated event " EFX_QWORD_FMT "\n",
+ EFX_QWORD_VAL(*p_event));
+ break;
+ default:
+ netif_info(efx, drv, efx->net_dev,
+ "Unhandled event " EFX_QWORD_FMT "\n",
+ EFX_QWORD_VAL(*p_event));
+ }
+
+ ++read_ptr;
+ if ((read_ptr & channel->eventq_mask) == 0)
+ evq_phase = !evq_phase;
+ }
+
+ channel->eventq_read_ptr = read_ptr;
+ if (evq_phase != old_evq_phase)
+ change_bit(channel->channel, nic_data->evq_phases);
+
+ return spent;
}
static irqreturn_t ef100_msi_interrupt(int irq, void *dev_id)