diff options
Diffstat (limited to 'drivers/net/ethernet/pensando/ionic/ionic_dev.h')
| -rw-r--r-- | drivers/net/ethernet/pensando/ionic/ionic_dev.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h index 2252fa9ad0e3..86922dd26b72 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h +++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h @@ -126,6 +126,59 @@ struct ionic_dev { struct ionic_devinfo dev_info; }; +struct ionic_cq_info { + void *cq_desc; + struct ionic_cq_info *next; + unsigned int index; + bool last; +}; + +struct ionic_queue; +struct ionic_qcq; +struct ionic_desc_info; + +typedef void (*ionic_desc_cb)(struct ionic_queue *q, + struct ionic_desc_info *desc_info, + struct ionic_cq_info *cq_info, void *cb_arg); + +struct ionic_desc_info { + void *desc; + void *sg_desc; + struct ionic_desc_info *next; + unsigned int index; + unsigned int left; + ionic_desc_cb cb; + void *cb_arg; +}; + +#define QUEUE_NAME_MAX_SZ 32 + +struct ionic_queue { + u64 dbell_count; + u64 drop; + u64 stop; + u64 wake; + struct ionic_lif *lif; + struct ionic_desc_info *info; + struct ionic_desc_info *tail; + struct ionic_desc_info *head; + struct ionic_dev *idev; + unsigned int index; + unsigned int type; + unsigned int hw_index; + unsigned int hw_type; + u64 dbval; + void *base; + void *sg_base; + dma_addr_t base_pa; + dma_addr_t sg_base_pa; + unsigned int num_descs; + unsigned int desc_size; + unsigned int sg_desc_size; + unsigned int pid; + char name[QUEUE_NAME_MAX_SZ]; +}; + #define INTR_INDEX_NOT_ASSIGNED -1 #define INTR_NAME_MAX_SZ 32 @@ -138,6 +191,20 @@ struct ionic_intr_info { cpumask_t affinity_mask; }; +struct ionic_cq { + void *base; + dma_addr_t base_pa; + struct ionic_lif *lif; + struct ionic_cq_info *info; + struct ionic_cq_info *tail; + struct ionic_queue *bound_q; + struct ionic_intr_info *bound_intr; + bool done_color; + unsigned int num_descs; + u64 compl_count; + unsigned int desc_size; +}; + struct ionic; static inline void ionic_intr_init(struct ionic_dev *idev, @@ -148,6 +215,23 @@ static inline void ionic_intr_init(struct ionic_dev *idev, intr->index = index; } +static inline unsigned int ionic_q_space_avail(struct ionic_queue *q) +{ + unsigned int avail = q->tail->index; + + if (q->head->index >= avail) + avail += q->head->left - 1; + else + avail -= q->head->index + 1; + + return avail; +} + +static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want) +{ + return ionic_q_space_avail(q) >= want; +} + void ionic_init_devinfo(struct ionic *ionic); int ionic_dev_setup(struct ionic *ionic); void ionic_dev_teardown(struct ionic *ionic); @@ -174,7 +258,32 @@ void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver); void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, dma_addr_t addr); void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index); +void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, + u16 lif_index, u16 intr_index); int ionic_db_page_num(struct ionic_lif *lif, int pid); +int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, + struct ionic_intr_info *intr, + unsigned int num_descs, size_t desc_size); +void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa); +void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q); +typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info); +typedef void (*ionic_cq_done_cb)(void *done_arg); +unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, + ionic_cq_cb cb, ionic_cq_done_cb done_cb, + void *done_arg); + +int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, + struct ionic_queue *q, unsigned int index, const char *name, + unsigned int num_descs, size_t desc_size, + size_t sg_desc_size, unsigned int pid); +void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); +void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); +void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb, + void *cb_arg); +void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start); +void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info, + unsigned int stop_index); + #endif /* _IONIC_DEV_H_ */ |