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>

diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index be37055..c670352 100644 (file)
--- 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)