#include "sfc.h"
#include "sfc_log.h"
+#include "sfc_ev.h"
+#include "sfc_rx.h"
int
return rc;
}
+/*
+ * Find out maximum number of receive and transmit queues which could be
+ * advertised.
+ *
+ * NIC is kept initialized on success to allow other modules acquire
+ * defaults and capabilities.
+ */
+static int
+sfc_estimate_resource_limits(struct sfc_adapter *sa)
+{
+ const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
+ efx_drv_limits_t limits;
+ int rc;
+ uint32_t evq_allocated;
+ uint32_t rxq_allocated;
+ uint32_t txq_allocated;
+
+ memset(&limits, 0, sizeof(limits));
+
+ /* Request at least one Rx and Tx queue */
+ limits.edl_min_rxq_count = 1;
+ limits.edl_min_txq_count = 1;
+ /* Management event queue plus event queue for each Tx and Rx queue */
+ limits.edl_min_evq_count =
+ 1 + limits.edl_min_rxq_count + limits.edl_min_txq_count;
+
+ /* Divide by number of functions to guarantee that all functions
+ * will get promised resources
+ */
+ /* FIXME Divide by number of functions (not 2) below */
+ limits.edl_max_evq_count = encp->enc_evq_limit / 2;
+ SFC_ASSERT(limits.edl_max_evq_count >= limits.edl_min_rxq_count);
+
+ /* Split equally between receive and transmit */
+ limits.edl_max_rxq_count =
+ MIN(encp->enc_rxq_limit, (limits.edl_max_evq_count - 1) / 2);
+ SFC_ASSERT(limits.edl_max_rxq_count >= limits.edl_min_rxq_count);
+
+ limits.edl_max_txq_count =
+ MIN(encp->enc_txq_limit,
+ limits.edl_max_evq_count - 1 - limits.edl_max_rxq_count);
+ SFC_ASSERT(limits.edl_max_txq_count >= limits.edl_min_rxq_count);
+
+ /* Configure the minimum required resources needed for the
+ * driver to operate, and the maximum desired resources that the
+ * driver is capable of using.
+ */
+ efx_nic_set_drv_limits(sa->nic, &limits);
+
+ sfc_log_init(sa, "init nic");
+ rc = efx_nic_init(sa->nic);
+ if (rc != 0)
+ goto fail_nic_init;
+
+ /* Find resource dimensions assigned by firmware to this function */
+ rc = efx_nic_get_vi_pool(sa->nic, &evq_allocated, &rxq_allocated,
+ &txq_allocated);
+ if (rc != 0)
+ goto fail_get_vi_pool;
+
+ /* It still may allocate more than maximum, ensure limit */
+ evq_allocated = MIN(evq_allocated, limits.edl_max_evq_count);
+ rxq_allocated = MIN(rxq_allocated, limits.edl_max_rxq_count);
+ txq_allocated = MIN(txq_allocated, limits.edl_max_txq_count);
+
+ /* Subtract management EVQ not used for traffic */
+ SFC_ASSERT(evq_allocated > 0);
+ evq_allocated--;
+
+ /* Right now we use separate EVQ for Rx and Tx */
+ sa->rxq_max = MIN(rxq_allocated, evq_allocated / 2);
+ sa->txq_max = MIN(txq_allocated, evq_allocated - sa->rxq_max);
+
+ /* Keep NIC initialized */
+ return 0;
+
+fail_get_vi_pool:
+fail_nic_init:
+ efx_nic_fini(sa->nic);
+ return rc;
+}
+
+static int
+sfc_set_drv_limits(struct sfc_adapter *sa)
+{
+ const struct rte_eth_dev_data *data = sa->eth_dev->data;
+ efx_drv_limits_t lim;
+
+ memset(&lim, 0, sizeof(lim));
+
+ /* Limits are strict since take into account initial estimation */
+ lim.edl_min_evq_count = lim.edl_max_evq_count =
+ 1 + data->nb_rx_queues + data->nb_tx_queues;
+ lim.edl_min_rxq_count = lim.edl_max_rxq_count = data->nb_rx_queues;
+ lim.edl_min_txq_count = lim.edl_max_txq_count = data->nb_tx_queues;
+
+ return efx_nic_set_drv_limits(sa->nic, &lim);
+}
+
int
sfc_start(struct sfc_adapter *sa)
{
sa->state = SFC_ADAPTER_STARTING;
+ sfc_log_init(sa, "set resource limits");
+ rc = sfc_set_drv_limits(sa);
+ if (rc != 0)
+ goto fail_set_drv_limits;
+
sfc_log_init(sa, "init nic");
rc = efx_nic_init(sa->nic);
if (rc != 0)
goto fail_nic_init;
+ rc = sfc_intr_start(sa);
+ if (rc != 0)
+ goto fail_intr_start;
+
+ rc = sfc_ev_start(sa);
+ if (rc != 0)
+ goto fail_ev_start;
+
+ rc = sfc_port_start(sa);
+ if (rc != 0)
+ goto fail_port_start;
+
+ rc = sfc_rx_start(sa);
+ if (rc != 0)
+ goto fail_rx_start;
+
sa->state = SFC_ADAPTER_STARTED;
sfc_log_init(sa, "done");
return 0;
+fail_rx_start:
+ sfc_port_stop(sa);
+
+fail_port_start:
+ sfc_ev_stop(sa);
+
+fail_ev_start:
+ sfc_intr_stop(sa);
+
+fail_intr_start:
+ efx_nic_fini(sa->nic);
+
fail_nic_init:
+fail_set_drv_limits:
sa->state = SFC_ADAPTER_CONFIGURED;
fail_bad_state:
sfc_log_init(sa, "failed %d", rc);
sa->state = SFC_ADAPTER_STOPPING;
+ sfc_rx_stop(sa);
+ sfc_port_stop(sa);
+ sfc_ev_stop(sa);
+ sfc_intr_stop(sa);
efx_nic_fini(sa->nic);
sa->state = SFC_ADAPTER_CONFIGURED;
if (rc != 0)
goto fail_check_conf;
+ rc = sfc_intr_init(sa);
+ if (rc != 0)
+ goto fail_intr_init;
+
+ rc = sfc_ev_init(sa);
+ if (rc != 0)
+ goto fail_ev_init;
+
+ rc = sfc_port_init(sa);
+ if (rc != 0)
+ goto fail_port_init;
+
+ rc = sfc_rx_init(sa);
+ if (rc != 0)
+ goto fail_rx_init;
+
sa->state = SFC_ADAPTER_CONFIGURED;
sfc_log_init(sa, "done");
return 0;
+fail_rx_init:
+ sfc_port_fini(sa);
+
+fail_port_init:
+ sfc_ev_fini(sa);
+
+fail_ev_init:
+ sfc_intr_fini(sa);
+
+fail_intr_init:
fail_check_conf:
sa->state = SFC_ADAPTER_INITIALIZED;
sfc_log_init(sa, "failed %d", rc);
SFC_ASSERT(sa->state == SFC_ADAPTER_CONFIGURED);
sa->state = SFC_ADAPTER_CLOSING;
+ sfc_rx_fini(sa);
+ sfc_port_fini(sa);
+ sfc_ev_fini(sa);
+ sfc_intr_fini(sa);
+
sa->state = SFC_ADAPTER_INITIALIZED;
sfc_log_init(sa, "done");
}
if (rc != 0)
goto fail_nic_reset;
- /* Initialize NIC to double-check hardware */
- sfc_log_init(sa, "init nic");
- rc = efx_nic_init(enp);
+ sfc_log_init(sa, "estimate resource limits");
+ rc = sfc_estimate_resource_limits(sa);
if (rc != 0)
- goto fail_nic_init;
+ goto fail_estimate_rsrc_limits;
+
+ rc = sfc_intr_attach(sa);
+ if (rc != 0)
+ goto fail_intr_attach;
sfc_log_init(sa, "fini nic");
efx_nic_fini(enp);
- sa->rxq_max = 1;
- sa->txq_max = 1;
-
sa->state = SFC_ADAPTER_INITIALIZED;
sfc_log_init(sa, "done");
return 0;
-fail_nic_init:
+fail_intr_attach:
+fail_estimate_rsrc_limits:
fail_nic_reset:
sfc_log_init(sa, "unprobe nic");
efx_nic_unprobe(enp);
SFC_ASSERT(sfc_adapter_is_locked(sa));
+ sfc_intr_detach(sa);
+
sfc_log_init(sa, "unprobe nic");
efx_nic_unprobe(enp);
git.droids-corp.org / dpdk.git / blobdiff