1 /* $FreeBSD$ */ 2 3 /*- 4 * Copyright (c) 2004, 2005 5 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 struct iwi_rx_radiotap_header { 31 struct ieee80211_radiotap_header wr_ihdr; 32 uint8_t wr_flags; 33 uint8_t wr_rate; 34 uint16_t wr_chan_freq; 35 uint16_t wr_chan_flags; 36 int8_t wr_antsignal; 37 int8_t wr_antnoise; 38 uint8_t wr_antenna; 39 }; 40 41 #define IWI_RX_RADIOTAP_PRESENT \ 42 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 43 (1 << IEEE80211_RADIOTAP_RATE) | \ 44 (1 << IEEE80211_RADIOTAP_CHANNEL) | \ 45 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | \ 46 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | \ 47 (1 << IEEE80211_RADIOTAP_ANTENNA)) 48 49 struct iwi_tx_radiotap_header { 50 struct ieee80211_radiotap_header wt_ihdr; 51 uint8_t wt_flags; 52 uint16_t wt_chan_freq; 53 uint16_t wt_chan_flags; 54 }; 55 56 #define IWI_TX_RADIOTAP_PRESENT \ 57 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 58 (1 << IEEE80211_RADIOTAP_CHANNEL)) 59 60 struct iwi_cmd_ring { 61 bus_dma_tag_t desc_dmat; 62 bus_dmamap_t desc_map; 63 bus_addr_t physaddr; 64 struct iwi_cmd_desc *desc; 65 int count; 66 int queued; 67 int cur; 68 int next; 69 }; 70 71 struct iwi_tx_data { 72 bus_dmamap_t map; 73 struct mbuf *m; 74 struct ieee80211_node *ni; 75 }; 76 77 struct iwi_tx_ring { 78 bus_dma_tag_t desc_dmat; 79 bus_dma_tag_t data_dmat; 80 bus_dmamap_t desc_map; 81 bus_addr_t physaddr; 82 bus_addr_t csr_ridx; 83 bus_addr_t csr_widx; 84 struct iwi_tx_desc *desc; 85 struct iwi_tx_data *data; 86 int count; 87 int queued; 88 int cur; 89 int next; 90 }; 91 92 struct iwi_rx_data { 93 bus_dmamap_t map; 94 bus_addr_t physaddr; 95 uint32_t reg; 96 struct mbuf *m; 97 }; 98 99 struct iwi_rx_ring { 100 bus_dma_tag_t data_dmat; 101 struct iwi_rx_data *data; 102 int count; 103 int cur; 104 }; 105 106 struct iwi_node { 107 struct ieee80211_node in_node; 108 int in_station; 109 #define IWI_MAX_IBSSNODE 32 110 }; 111 112 struct iwi_fw { 113 const struct firmware *fp; /* image handle */ 114 const char *data; /* firmware image data */ 115 size_t size; /* firmware image size */ 116 const char *name; /* associated image name */ 117 }; 118 119 struct iwi_vap { 120 struct ieee80211vap iwi_vap; 121 122 int (*iwi_newstate)(struct ieee80211vap *, 123 enum ieee80211_state, int); 124 }; 125 #define IWI_VAP(vap) ((struct iwi_vap *)(vap)) 126 127 struct iwi_softc { 128 struct mtx sc_mtx; 129 struct ieee80211com sc_ic; 130 struct mbufq sc_snd; 131 device_t sc_dev; 132 133 void (*sc_node_free)(struct ieee80211_node *); 134 135 uint8_t sc_mcast[IEEE80211_ADDR_LEN]; 136 struct unrhdr *sc_unr; 137 138 uint32_t flags; 139 #define IWI_FLAG_FW_INITED (1 << 0) 140 #define IWI_FLAG_BUSY (1 << 3) /* busy sending a command */ 141 #define IWI_FLAG_ASSOCIATED (1 << 4) /* currently associated */ 142 #define IWI_FLAG_CHANNEL_SCAN (1 << 5) 143 uint32_t fw_state; 144 #define IWI_FW_IDLE 0 145 #define IWI_FW_LOADING 1 146 #define IWI_FW_ASSOCIATING 2 147 #define IWI_FW_DISASSOCIATING 3 148 #define IWI_FW_SCANNING 4 149 struct iwi_cmd_ring cmdq; 150 struct iwi_tx_ring txq[WME_NUM_AC]; 151 struct iwi_rx_ring rxq; 152 153 struct resource *irq; 154 struct resource *mem; 155 bus_space_tag_t sc_st; 156 bus_space_handle_t sc_sh; 157 void *sc_ih; 158 159 /* 160 * The card needs external firmware images to work, which is made of a 161 * bootloader, microcode and firmware proper. In version 3.00 and 162 * above, all pieces are contained in a single image, preceded by a 163 * struct iwi_firmware_hdr indicating the size of the 3 pieces. 164 * Old firmware < 3.0 has separate boot and ucode, so we need to 165 * load all of them explicitly. 166 * To avoid issues related to fragmentation, we keep the block of 167 * dma-ble memory around until detach time, and reallocate it when 168 * it becomes too small. fw_dma_size is the size currently allocated. 169 */ 170 int fw_dma_size; 171 uint32_t fw_flags; /* allocation status */ 172 #define IWI_FW_HAVE_DMAT 0x01 173 #define IWI_FW_HAVE_MAP 0x02 174 #define IWI_FW_HAVE_PHY 0x04 175 bus_dma_tag_t fw_dmat; 176 bus_dmamap_t fw_map; 177 bus_addr_t fw_physaddr; 178 void *fw_virtaddr; 179 enum ieee80211_opmode fw_mode; /* mode of current firmware */ 180 struct iwi_fw fw_boot; /* boot firmware */ 181 struct iwi_fw fw_uc; /* microcode */ 182 struct iwi_fw fw_fw; /* operating mode support */ 183 184 int curchan; /* current h/w channel # */ 185 int antenna; 186 int bluetooth; 187 struct iwi_associate assoc; 188 struct iwi_wme_params wme[3]; 189 u_int sc_scangen; 190 191 struct task sc_radiontask; /* radio on processing */ 192 struct task sc_radiofftask; /* radio off processing */ 193 struct task sc_restarttask; /* restart adapter processing */ 194 struct task sc_disassoctask; 195 struct task sc_wmetask; /* set wme parameters */ 196 struct task sc_monitortask; 197 198 unsigned int sc_running : 1, /* initialized */ 199 sc_softled : 1, /* enable LED gpio status */ 200 sc_ledstate: 1, /* LED on/off state */ 201 sc_blinking: 1; /* LED blink operation active */ 202 u_int sc_nictype; /* NIC type from EEPROM */ 203 u_int sc_ledpin; /* mask for activity LED */ 204 u_int sc_ledidle; /* idle polling interval */ 205 int sc_ledevent; /* time of last LED event */ 206 u_int8_t sc_rxrate; /* current rx rate for LED */ 207 u_int8_t sc_rxrix; 208 u_int8_t sc_txrate; /* current tx rate for LED */ 209 u_int8_t sc_txrix; 210 u_int16_t sc_ledoff; /* off time for current blink */ 211 struct callout sc_ledtimer; /* led off timer */ 212 struct callout sc_wdtimer; /* watchdog timer */ 213 struct callout sc_rftimer; /* rfkill timer */ 214 215 int sc_tx_timer; 216 int sc_state_timer; /* firmware state timer */ 217 int sc_busy_timer; /* firmware cmd timer */ 218 219 struct iwi_rx_radiotap_header sc_rxtap; 220 struct iwi_tx_radiotap_header sc_txtap; 221 222 struct iwi_notif_link_quality sc_linkqual; 223 int sc_linkqual_valid; 224 }; 225 226 #define IWI_STATE_BEGIN(_sc, _state) do { \ 227 KASSERT(_sc->fw_state == IWI_FW_IDLE, \ 228 ("iwi firmware not idle, state %s", iwi_fw_states[_sc->fw_state]));\ 229 _sc->fw_state = _state; \ 230 _sc->sc_state_timer = 5; \ 231 DPRINTF(("enter %s state\n", iwi_fw_states[_state])); \ 232 } while (0) 233 234 #define IWI_STATE_END(_sc, _state) do { \ 235 if (_sc->fw_state == _state) \ 236 DPRINTF(("exit %s state\n", iwi_fw_states[_state])); \ 237 else \ 238 DPRINTF(("expected %s state, got %s\n", \ 239 iwi_fw_states[_state], iwi_fw_states[_sc->fw_state])); \ 240 _sc->fw_state = IWI_FW_IDLE; \ 241 wakeup(_sc); \ 242 _sc->sc_state_timer = 0; \ 243 } while (0) 244 /* 245 * NB.: This models the only instance of async locking in iwi_init_locked 246 * and must be kept in sync. 247 */ 248 #define IWI_LOCK_INIT(sc) \ 249 mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->sc_dev), \ 250 MTX_NETWORK_LOCK, MTX_DEF) 251 #define IWI_LOCK_DESTROY(sc) mtx_destroy(&(sc)->sc_mtx) 252 #define IWI_LOCK_DECL int __waslocked = 0 253 #define IWI_LOCK_ASSERT(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED) 254 #define IWI_LOCK(sc) do { \ 255 if (!(__waslocked = mtx_owned(&(sc)->sc_mtx))) \ 256 mtx_lock(&(sc)->sc_mtx); \ 257 } while (0) 258 #define IWI_UNLOCK(sc) do { \ 259 if (!__waslocked) \ 260 mtx_unlock(&(sc)->sc_mtx); \ 261 } while (0) 262