drivers/net/wireless/iwlwifi/iwl-trans-int-pcie.h

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #ifndef __iwl_trans_int_pcie_h__
  30 #define __iwl_trans_int_pcie_h__
  31
  32 /*This file includes the declaration that are internal to the
  33  * trans_pcie layer */
  34
  35 /**
  36  * struct iwl_rx_queue - Rx queue
  37  * @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
  38  * @bd_dma: bus address of buffer of receive buffer descriptors (rbd)
  39  * @pool:
  40  * @queue:
  41  * @read: Shared index to newest available Rx buffer
  42  * @write: Shared index to oldest written Rx packet
  43  * @free_count: Number of pre-allocated buffers in rx_free
  44  * @write_actual:
  45  * @rx_free: list of free SKBs for use
  46  * @rx_used: List of Rx buffers with no SKB
  47  * @need_update: flag to indicate we need to update read/write index
  48  * @rb_stts: driver's pointer to receive buffer status
  49  * @rb_stts_dma: bus address of receive buffer status
  50  * @lock:
  51  *
  52  * NOTE:  rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
  53  */
  54 struct iwl_rx_queue {
  55         __le32 *bd;
  56         dma_addr_t bd_dma;
  57         struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
  58         struct iwl_rx_mem_buffer *queue[RX_QUEUE_SIZE];
  59         u32 read;
  60         u32 write;
  61         u32 free_count;
  62         u32 write_actual;
  63         struct list_head rx_free;
  64         struct list_head rx_used;
  65         int need_update;
  66         struct iwl_rb_status *rb_stts;
  67         dma_addr_t rb_stts_dma;
  68         spinlock_t lock;
  69 };
  70
  71 /**
  72  * struct iwl_trans_pcie - PCIe transport specific data
  73  * @rxq: all the RX queue data
  74  * @rx_replenish: work that will be called when buffers need to be allocated
  75  * @trans: pointer to the generic transport area
  76  */
  77 struct iwl_trans_pcie {
  78         struct iwl_rx_queue rxq;
  79         struct work_struct rx_replenish;
  80         struct iwl_trans *trans;
  81 };
  82
  83 #define IWL_TRANS_GET_PCIE_TRANS(_iwl_trans) \
  84         ((struct iwl_trans_pcie *) ((_iwl_trans)->trans_specific))
  85
  86 /*****************************************************
  87 * RX
  88 ******************************************************/
  89 void iwl_bg_rx_replenish(struct work_struct *data);
  90 void iwl_irq_tasklet(struct iwl_priv *priv);
  91 void iwlagn_rx_replenish(struct iwl_trans *trans);
  92 void iwl_rx_queue_update_write_ptr(struct iwl_trans *trans,
  93                         struct iwl_rx_queue *q);
  94
  95 /*****************************************************
  96 * ICT
  97 ******************************************************/
  98 int iwl_reset_ict(struct iwl_priv *priv);
  99 void iwl_disable_ict(struct iwl_priv *priv);
 100 int iwl_alloc_isr_ict(struct iwl_priv *priv);
 101 void iwl_free_isr_ict(struct iwl_priv *priv);
 102 irqreturn_t iwl_isr_ict(int irq, void *data);
 103
 104
 105 /*****************************************************
 106 * TX / HCMD
 107 ******************************************************/
 108 void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 109 void iwlagn_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq,
 110                                 int index);
 111 int iwlagn_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 112                                  struct iwl_tx_queue *txq,
 113                                  dma_addr_t addr, u16 len, u8 reset);
 114 int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
 115                           int count, int slots_num, u32 id);
 116 int iwl_trans_pcie_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd);
 117 int __must_check iwl_trans_pcie_send_cmd_pdu(struct iwl_priv *priv, u8 id,
 118                         u32 flags, u16 len, const void *data);
 119 void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
 120 void iwl_trans_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
 121                                            struct iwl_tx_queue *txq,
 122                                            u16 byte_cnt);
 123 int iwl_trans_pcie_txq_agg_disable(struct iwl_priv *priv, u16 txq_id,
 124                                   u16 ssn_idx, u8 tx_fifo);
 125 void iwl_trans_set_wr_ptrs(struct iwl_priv *priv,
 126                      int txq_id, u32 index);
 127 void iwl_trans_tx_queue_set_status(struct iwl_priv *priv,
 128                              struct iwl_tx_queue *txq,
 129                              int tx_fifo_id, int scd_retry);
 130 void iwl_trans_pcie_txq_agg_setup(struct iwl_priv *priv, int sta_id, int tid,
 131                                                 int frame_limit);
 132
 133 #endif /* __iwl_trans_int_pcie_h__ */