drivers/net/wireless/ath/ath6kl/htc_hif.h

   1 /*
   2  * Copyright (c) 2007-2011 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef HTC_HIF_H
  18 #define HTC_HIF_H
  19
  20 #include "htc.h"
  21 #include "hif.h"
  22
  23 #define ATH6KL_MAILBOXES        4
  24
  25 /* HTC runs over mailbox 0 */
  26 #define HTC_MAILBOX     0
  27
  28 #define ATH6KL_TARGET_DEBUG_INTR_MASK     0x01
  29
  30 #define OTHER_INTS_ENABLED              (INT_STATUS_ENABLE_ERROR_MASK | \
  31                                         INT_STATUS_ENABLE_CPU_MASK   |  \
  32                                         INT_STATUS_ENABLE_COUNTER_MASK)
  33
  34 #define ATH6KL_REG_IO_BUFFER_SIZE                       32
  35 #define ATH6KL_MAX_REG_IO_BUFFERS                       8
  36 #define ATH6KL_SCATTER_ENTRIES_PER_REQ            16
  37 #define ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER      (16 * 1024)
  38 #define ATH6KL_SCATTER_REQS                       4
  39
  40 #ifndef A_CACHE_LINE_PAD
  41 #define A_CACHE_LINE_PAD                        128
  42 #endif
  43 #define ATH6KL_MIN_SCATTER_ENTRIES_PER_REQ        2
  44 #define ATH6KL_MIN_TRANSFER_SIZE_PER_SCATTER      (4 * 1024)
  45
  46 struct ath6kl_irq_proc_registers {
  47         u8 host_int_status;
  48         u8 cpu_int_status;
  49         u8 error_int_status;
  50         u8 counter_int_status;
  51         u8 mbox_frame;
  52         u8 rx_lkahd_valid;
  53         u8 host_int_status2;
  54         u8 gmbox_rx_avail;
  55         __le32 rx_lkahd[2];
  56         __le32 rx_gmbox_lkahd_alias[2];
  57 } __packed;
  58
  59 struct ath6kl_irq_enable_reg {
  60         u8 int_status_en;
  61         u8 cpu_int_status_en;
  62         u8 err_int_status_en;
  63         u8 cntr_int_status_en;
  64 } __packed;
  65
  66 struct ath6kl_device {
  67         spinlock_t lock;
  68         u8 pad1[A_CACHE_LINE_PAD];
  69         struct ath6kl_irq_proc_registers irq_proc_reg;
  70         u8 pad2[A_CACHE_LINE_PAD];
  71         struct ath6kl_irq_enable_reg irq_en_reg;
  72         u8 pad3[A_CACHE_LINE_PAD];
  73         struct htc_target *htc_cnxt;
  74         struct ath6kl *ar;
  75 };
  76
  77 int ath6kldev_setup(struct ath6kl_device *dev);
  78 int ath6kldev_unmask_intrs(struct ath6kl_device *dev);
  79 int ath6kldev_mask_intrs(struct ath6kl_device *dev);
  80 int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev,
  81                               u32 *lk_ahd, int timeout);
  82 int ath6kldev_rx_control(struct ath6kl_device *dev, bool enable_rx);
  83 int ath6kldev_disable_intrs(struct ath6kl_device *dev);
  84
  85 int ath6kldev_rw_comp_handler(void *context, int status);
  86 int ath6kldev_intr_bh_handler(struct ath6kl *ar);
  87
  88 /* Scatter Function and Definitions */
  89 int ath6kldev_submit_scat_req(struct ath6kl_device *dev,
  90                             struct hif_scatter_req *scat_req, bool read);
  91
  92 #endif /*ATH6KL_H_ */