__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
* @CMD_SYNC: The caller will be stalled until the fw responds to the command
* @CMD_ASYNC: Return right away and don't want for the response
* @CMD_WANT_SKB: valid only with CMD_SYNC. The caller needs the buffer of the
- * response.
+ * response. The caller needs to call iwl_free_resp when done.
+ * @CMD_WANT_HCMD: The caller needs to get the HCMD that was sent in the
+ * response handler. Chunks flagged by %IWL_HCMD_DFL_NOCOPY won't be
+ * copied. The pointer passed to the response handler is in the transport
+ * ownership and don't need to be freed by the op_mode. This also means
+ * that the pointer is invalidated after the op_mode's handler returns.
* @CMD_ON_DEMAND: This command is sent by the test mode pipe.
*/
enum CMD_MODE {
CMD_SYNC = 0,
CMD_ASYNC = BIT(0),
CMD_WANT_SKB = BIT(1),
- CMD_ON_DEMAND = BIT(2),
+ CMD_WANT_HCMD = BIT(2),
+ CMD_ON_DEMAND = BIT(3),
};
#define DEF_CMD_PAYLOAD_SIZE 320
#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
*/
#define IWL_MAX_HW_QUEUES 32
+#define IWL_INVALID_STATION 255
+#define IWL_MAX_TID_COUNT 8
+#define IWL_FRAME_LIMIT 64
/**
* struct iwl_trans_config - transport configuration
*
* @op_mode: pointer to the upper layer.
- * @queue_to_fifo: queue to FIFO mapping to set up by
- * default
- * @n_queue_to_fifo: number of queues to set up
* @cmd_queue: the index of the command queue.
* Must be set before start_fw.
+ * @cmd_fifo: the fifo for host commands
* @no_reclaim_cmds: Some devices erroneously don't set the
* SEQ_RX_FRAME bit on some notifications, this is the
* list of such notifications to filter. Max length is
*/
struct iwl_trans_config {
struct iwl_op_mode *op_mode;
- const u8 *queue_to_fifo;
- u8 n_queue_to_fifo;
u8 cmd_queue;
+ u8 cmd_fifo;
const u8 *no_reclaim_cmds;
int n_no_reclaim_cmds;
* 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
- * ready and a successful ADDBA response has been received.
- * May sleep
- * @tx_agg_disable: de-configure a Tx queue to send AMPDUs
+ * @txq_enable: setup a queue. To setup an AC queue, use the
+ * iwl_trans_ac_txq_enable wrapper. fw_alive must have been called before
+ * this one. The op_mode must not configure the HCMD queue. May sleep.
+ * @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
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);
* @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;
wait_queue_head_t wait_command_queue;
+ /* The following fields are internal only */
+ struct kmem_cache *dev_cmd_pool;
+ size_t dev_cmd_headroom;
+ char dev_cmd_pool_name[50];
+
+ struct dentry *dbgfs_dir;
+
/* pointer to trans specific struct */
/*Ensure that this pointer will always be aligned to sizeof pointer */
char trans_specific[0] __aligned(sizeof(void *));
{
might_sleep();
- trans->ops->fw_alive(trans);
-
trans->state = IWL_TRANS_FW_ALIVE;
+
+ trans->ops->fw_alive(trans);
}
static inline int iwl_trans_start_fw(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)
{
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);
}
+static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
+ int fifo)
+{
+ iwl_trans_txq_enable(trans, queue, fifo, IWL_INVALID_STATION,
+ IWL_MAX_TID_COUNT, IWL_FRAME_LIMIT, 0);
+}
+
static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
{
WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE,
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