diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans.h | 56 |
1 files changed, 45 insertions, 11 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index 79a1e7ae4995..00efde8e5536 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -154,6 +154,9 @@ struct iwl_cmd_header { __le16 sequence; } __packed; +/* iwl_cmd_header flags value */ +#define IWL_CMD_FAILED_MSK 0x40 + #define FH_RSCSR_FRAME_SIZE_MSK 0x00003FFF /* bits 0-13 */ #define FH_RSCSR_FRAME_INVALID 0x55550000 @@ -280,6 +283,8 @@ static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r) #define MAX_NO_RECLAIM_CMDS 6 +#define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo)))) + /* * Maximum number of HW queues the transport layer * currently supports @@ -350,10 +355,10 @@ struct iwl_trans; * Must be atomic * @reclaim: free packet until ssn. Returns a list of freed packets. * Must be atomic - * @tx_agg_setup: setup a tx queue for AMPDU - will be called once the HW is + * @txq_enable: setup a tx queue for AMPDU - will be called once the HW is * ready and a successful ADDBA response has been received. * May sleep - * @tx_agg_disable: de-configure a Tx queue to send AMPDUs + * @txq_disable: de-configure a Tx queue to send AMPDUs * Must be atomic * @wait_tx_queue_empty: wait until all tx queues are empty * May sleep @@ -386,9 +391,9 @@ struct iwl_trans_ops { void (*reclaim)(struct iwl_trans *trans, int queue, int ssn, struct sk_buff_head *skbs); - void (*tx_agg_setup)(struct iwl_trans *trans, int queue, int fifo, - int sta_id, int tid, int frame_limit, u16 ssn); - void (*tx_agg_disable)(struct iwl_trans *trans, int queue); + void (*txq_enable)(struct iwl_trans *trans, int queue, int fifo, + int sta_id, int tid, int frame_limit, u16 ssn); + void (*txq_disable)(struct iwl_trans *trans, int queue); int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir); int (*wait_tx_queue_empty)(struct iwl_trans *trans); @@ -428,6 +433,11 @@ enum iwl_trans_state { * @hw_id_str: a string with info about HW ID. Set during transport allocation. * @pm_support: set to true in start_hw if link pm is supported * @wait_command_queue: the wait_queue for SYNC host commands + * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only. + * The user should use iwl_trans_{alloc,free}_tx_cmd. + * @dev_cmd_headroom: room needed for the transport's private use before the + * device_cmd for Tx - for internal use only + * The user should use iwl_trans_{alloc,free}_tx_cmd. */ struct iwl_trans { const struct iwl_trans_ops *ops; @@ -445,6 +455,10 @@ struct iwl_trans { wait_queue_head_t wait_command_queue; + /* The following fields are internal only */ + struct kmem_cache *dev_cmd_pool; + size_t dev_cmd_headroom; + /* pointer to trans specific struct */ /*Ensure that this pointer will always be aligned to sizeof pointer */ char trans_specific[0] __aligned(sizeof(void *)); @@ -520,6 +534,26 @@ static inline int iwl_trans_send_cmd(struct iwl_trans *trans, return trans->ops->send_cmd(trans, cmd); } +static inline struct iwl_device_cmd * +iwl_trans_alloc_tx_cmd(struct iwl_trans *trans) +{ + u8 *dev_cmd_ptr = kmem_cache_alloc(trans->dev_cmd_pool, GFP_ATOMIC); + + if (unlikely(dev_cmd_ptr == NULL)) + return NULL; + + return (struct iwl_device_cmd *) + (dev_cmd_ptr + trans->dev_cmd_headroom); +} + +static inline void iwl_trans_free_tx_cmd(struct iwl_trans *trans, + struct iwl_device_cmd *dev_cmd) +{ + u8 *dev_cmd_ptr = (u8 *)dev_cmd - trans->dev_cmd_headroom; + + kmem_cache_free(trans->dev_cmd_pool, dev_cmd_ptr); +} + static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb, struct iwl_device_cmd *dev_cmd, int queue) { @@ -538,24 +572,24 @@ static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue, trans->ops->reclaim(trans, queue, ssn, skbs); } -static inline void iwl_trans_tx_agg_disable(struct iwl_trans *trans, int queue) +static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue) { WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, "%s bad state = %d", __func__, trans->state); - trans->ops->tx_agg_disable(trans, queue); + trans->ops->txq_disable(trans, queue); } -static inline void iwl_trans_tx_agg_setup(struct iwl_trans *trans, int queue, - int fifo, int sta_id, int tid, - int frame_limit, u16 ssn) +static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue, + int fifo, int sta_id, int tid, + int frame_limit, u16 ssn) { might_sleep(); WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, "%s bad state = %d", __func__, trans->state); - trans->ops->tx_agg_setup(trans, queue, fifo, sta_id, tid, + trans->ops->txq_enable(trans, queue, fifo, sta_id, tid, frame_limit, ssn); } |