diff options
| author | Shannon Nelson <snelson@pensando.io> | 2019-09-03 15:28:09 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-09-05 09:24:43 +0200 |
| commit | 1d062b7b6f6408fd43f447f90338cfade4168170 (patch) | |
| tree | 12857110e2067b5f501b8c606855dd0563f3827b /drivers/net/ethernet/pensando/ionic/ionic_lif.h | |
| parent | 6461b446f2a0f40c038f1d09c69d1e5565a84a43 (diff) | |
ionic: Add basic adminq support
Most of the NIC configuration happens through the AdminQ message
queue. NAPI is used for basic interrupt handling and message
queue management. These routines are set up to be shared among
different types of queues when used in slow-path handling.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/pensando/ionic/ionic_lif.h')
| -rw-r--r-- | drivers/net/ethernet/pensando/ionic/ionic_lif.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h index ec8d06ad4192..d897048ae77f 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h @@ -6,6 +6,55 @@ #include <linux/pci.h> +#define IONIC_ADMINQ_LENGTH 16 /* must be a power of two */ + +#define IONIC_MAX_NUM_NAPI_CNTR (NAPI_POLL_WEIGHT + 1) +#define IONIC_MAX_NUM_SG_CNTR (IONIC_TX_MAX_SG_ELEMS + 1) + +struct ionic_tx_stats { + u64 pkts; + u64 bytes; +}; + +struct ionic_rx_stats { + u64 pkts; + u64 bytes; +}; + +#define IONIC_QCQ_F_INITED BIT(0) +#define IONIC_QCQ_F_SG BIT(1) +#define IONIC_QCQ_F_INTR BIT(2) + +struct ionic_napi_stats { + u64 poll_count; + u64 work_done_cntr[IONIC_MAX_NUM_NAPI_CNTR]; +}; + +struct ionic_q_stats { + union { + struct ionic_tx_stats tx; + struct ionic_rx_stats rx; + }; +}; + +struct ionic_qcq { + void *base; + dma_addr_t base_pa; + unsigned int total_size; + struct ionic_queue q; + struct ionic_cq cq; + struct ionic_intr_info intr; + struct napi_struct napi; + struct ionic_napi_stats napi_stats; + struct ionic_q_stats *stats; + unsigned int flags; + struct dentry *dentry; +}; + +#define q_to_qcq(q) container_of(q, struct ionic_qcq, q) +#define napi_to_qcq(napi) container_of(napi, struct ionic_qcq, napi) +#define napi_to_cq(napi) (&napi_to_qcq(napi)->cq) + enum ionic_lif_state_flags { IONIC_LIF_INITED, @@ -25,6 +74,8 @@ struct ionic_lif { unsigned int hw_index; unsigned int kern_pid; u64 __iomem *kern_dbpage; + spinlock_t adminq_lock; /* lock for AdminQ operations */ + struct ionic_qcq *adminqcq; unsigned int neqs; unsigned int nxqs; @@ -46,4 +97,20 @@ int ionic_lif_identify(struct ionic *ionic, u8 lif_type, union ionic_lif_identity *lif_ident); int ionic_lifs_size(struct ionic *ionic); +static inline void debug_stats_napi_poll(struct ionic_qcq *qcq, + unsigned int work_done) +{ + qcq->napi_stats.poll_count++; + + if (work_done > (IONIC_MAX_NUM_NAPI_CNTR - 1)) + work_done = IONIC_MAX_NUM_NAPI_CNTR - 1; + + qcq->napi_stats.work_done_cntr[work_done]++; +} + +#define DEBUG_STATS_CQE_CNT(cq) ((cq)->compl_count++) +#define DEBUG_STATS_INTR_REARM(intr) ((intr)->rearm_count++) +#define DEBUG_STATS_NAPI_POLL(qcq, work_done) \ + debug_stats_napi_poll(qcq, work_done) + #endif /* _IONIC_LIF_H_ */ |