drivers/net/wireless/ath5k/base.h

   1 /*-
   2  * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    without modification.
  11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
  13  *    redistribution must be conditioned upon including a substantially
  14  *    similar Disclaimer requirement for further binary redistribution.
  15  * 3. Neither the names of the above-listed copyright holders nor the names
  16  *    of any contributors may be used to endorse or promote products derived
  17  *    from this software without specific prior written permission.
  18  *
  19  * Alternatively, this software may be distributed under the terms of the
  20  * GNU General Public License ("GPL") version 2 as published by the Free
  21  * Software Foundation.
  22  *
  23  * NO WARRANTY
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
  27  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  28  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
  29  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  32  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  34  * THE POSSIBILITY OF SUCH DAMAGES.
  35  *
  36  */
  37
  38 /*
  39  * Defintions for the Atheros Wireless LAN controller driver.
  40  */
  41 #ifndef _DEV_ATH_ATHVAR_H
  42 #define _DEV_ATH_ATHVAR_H
  43
  44 #include <linux/interrupt.h>
  45 #include <linux/list.h>
  46 #include <linux/wireless.h>
  47 #include <linux/if_ether.h>
  48
  49 #include "ath5k.h"
  50 #include "debug.h"
  51
  52 #define ATH_RXBUF       40              /* number of RX buffers */
  53 #define ATH_TXBUF       200             /* number of TX buffers */
  54 #define ATH_BCBUF       1               /* number of beacon buffers */
  55
  56 struct ath5k_buf {
  57         struct list_head        list;
  58         unsigned int            flags;  /* tx descriptor flags */
  59         struct ath5k_desc       *desc;  /* virtual addr of desc */
  60         dma_addr_t              daddr;  /* physical addr of desc */
  61         struct sk_buff          *skb;   /* skbuff for buf */
  62         dma_addr_t              skbaddr;/* physical addr of skb data */
  63         struct ieee80211_tx_control ctl;
  64 };
  65
  66 /*
  67  * Data transmit queue state.  One of these exists for each
  68  * hardware transmit queue.  Packets sent to us from above
  69  * are assigned to queues based on their priority.  Not all
  70  * devices support a complete set of hardware transmit queues.
  71  * For those devices the array sc_ac2q will map multiple
  72  * priorities to fewer hardware queues (typically all to one
  73  * hardware queue).
  74  */
  75 struct ath5k_txq {
  76         unsigned int            qnum;   /* hardware q number */
  77         u32                     *link;  /* link ptr in last TX desc */
  78         struct list_head        q;      /* transmit queue */
  79         spinlock_t              lock;   /* lock on q and link */
  80         bool                    setup;
  81 };
  82
  83 #if CHAN_DEBUG
  84 #define ATH_CHAN_MAX    (26+26+26+200+200)
  85 #else
  86 #define ATH_CHAN_MAX    (14+14+14+252+20)       /* XXX what's the max? */
  87 #endif
  88
  89 /* Software Carrier, keeps track of the driver state
  90  * associated with an instance of a device */
  91 struct ath5k_softc {
  92         struct pci_dev          *pdev;          /* for dma mapping */
  93         void __iomem            *iobase;        /* address of the device */
  94         struct mutex            lock;           /* dev-level lock */
  95         struct ieee80211_tx_queue_stats tx_stats;
  96         struct ieee80211_low_level_stats ll_stats;
  97         struct ieee80211_hw     *hw;            /* IEEE 802.11 common */
  98         struct ieee80211_hw_mode modes[NUM_DRIVER_MODES];
  99         struct ieee80211_channel channels[ATH_CHAN_MAX];
 100         struct ieee80211_rate   rates[AR5K_MAX_RATES * NUM_DRIVER_MODES];
 101         enum ieee80211_if_types opmode;
 102         struct ath5k_hw         *ah;            /* Atheros HW */
 103
 104 #if ATH5K_DEBUG
 105         struct ath5k_dbg_info   debug;          /* debug info */
 106 #endif
 107
 108         struct ath5k_buf        *bufptr;        /* allocated buffer ptr */
 109         struct ath5k_desc       *desc;          /* TX/RX descriptors */
 110         dma_addr_t              desc_daddr;     /* DMA (physical) address */
 111         size_t                  desc_len;       /* size of TX/RX descriptors */
 112         u16                     cachelsz;       /* cache line size */
 113
 114         DECLARE_BITMAP(status, 6);
 115 #define ATH_STAT_INVALID        0               /* disable hardware accesses */
 116 #define ATH_STAT_MRRETRY        1               /* multi-rate retry support */
 117 #define ATH_STAT_PROMISC        2
 118 #define ATH_STAT_LEDBLINKING    3               /* LED blink operation active */
 119 #define ATH_STAT_LEDENDBLINK    4               /* finish LED blink operation */
 120 #define ATH_STAT_LEDSOFT        5               /* enable LED gpio status */
 121
 122         unsigned int            filter_flags;   /* HW flags, AR5K_RX_FILTER_* */
 123         unsigned int            curmode;        /* current phy mode */
 124         struct ieee80211_channel *curchan;      /* current h/w channel */
 125
 126         int                     iface_id;       /* add/remove_interface id */
 127
 128         struct {
 129                 u8      rxflags;        /* radiotap rx flags */
 130                 u8      txflags;        /* radiotap tx flags */
 131                 u16     ledon;          /* softled on time */
 132                 u16     ledoff;         /* softled off time */
 133         } hwmap[32];                            /* h/w rate ix mappings */
 134
 135         enum ath5k_int          imask;          /* interrupt mask copy */
 136
 137         DECLARE_BITMAP(keymap, AR5K_KEYCACHE_SIZE); /* key use bit map */
 138
 139         u8                      bssidmask[ETH_ALEN];
 140
 141         unsigned int            led_pin,        /* GPIO pin for driving LED */
 142                                 led_on,         /* pin setting for LED on */
 143                                 led_off;        /* off time for current blink */
 144         struct timer_list       led_tim;        /* led off timer */
 145         u8                      led_rxrate;     /* current rx rate for LED */
 146         u8                      led_txrate;     /* current tx rate for LED */
 147
 148         struct tasklet_struct   restq;          /* reset tasklet */
 149
 150         unsigned int            rxbufsize;      /* rx size based on mtu */
 151         struct list_head        rxbuf;          /* receive buffer */
 152         spinlock_t              rxbuflock;
 153         u32                     *rxlink;        /* link ptr in last RX desc */
 154         struct tasklet_struct   rxtq;           /* rx intr tasklet */
 155
 156         struct list_head        txbuf;          /* transmit buffer */
 157         spinlock_t              txbuflock;
 158         unsigned int            txbuf_len;      /* buf count in txbuf list */
 159         struct ath5k_txq        txqs[2];        /* beacon and tx */
 160
 161         struct ath5k_txq        *txq;           /* beacon and tx*/
 162         struct tasklet_struct   txtq;           /* tx intr tasklet */
 163
 164         struct ath5k_buf        *bbuf;          /* beacon buffer */
 165         unsigned int            bhalq,          /* SW q for outgoing beacons */
 166                                 bmisscount,     /* missed beacon transmits */
 167                                 bintval,        /* beacon interval */
 168                                 bsent;
 169
 170         struct timer_list       calib_tim;      /* calibration timer */
 171 };
 172
 173 #define ath5k_hw_hasbssidmask(_ah) \
 174         (ath5k_hw_get_capability(_ah, AR5K_CAP_BSSIDMASK, 0, NULL) == 0)
 175 #define ath5k_hw_hasveol(_ah) \
 176         (ath5k_hw_get_capability(_ah, AR5K_CAP_VEOL, 0, NULL) == 0)
 177
 178 #endif