1 2 /*- 3 * SPDX-License-Identifier: BSD-2-Clause 4 * 5 * Copyright (c) 2004, 2005 6 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 struct iwi_rx_radiotap_header { 32 struct ieee80211_radiotap_header wr_ihdr; 33 uint8_t wr_flags; 34 uint8_t wr_rate; 35 uint16_t wr_chan_freq; 36 uint16_t wr_chan_flags; 37 int8_t wr_antsignal; 38 int8_t wr_antnoise; 39 uint8_t wr_antenna; 40 } __packed __aligned(8); 41 42 #define IWI_RX_RADIOTAP_PRESENT \ 43 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 44 (1 << IEEE80211_RADIOTAP_RATE) | \ 45 (1 << IEEE80211_RADIOTAP_CHANNEL) | \ 46 (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | \ 47 (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | \ 48 (1 << IEEE80211_RADIOTAP_ANTENNA)) 49 50 struct iwi_tx_radiotap_header { 51 struct ieee80211_radiotap_header wt_ihdr; 52 uint8_t wt_flags; 53 uint8_t wt_pad; 54 uint16_t wt_chan_freq; 55 uint16_t wt_chan_flags; 56 } __packed; 57 58 #define IWI_TX_RADIOTAP_PRESENT \ 59 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 60 (1 << IEEE80211_RADIOTAP_CHANNEL)) 61 62 struct iwi_cmd_ring { 63 bus_dma_tag_t desc_dmat; 64 bus_dmamap_t desc_map; 65 bus_addr_t physaddr; 66 struct iwi_cmd_desc *desc; 67 int count; 68 int queued; 69 int cur; 70 int next; 71 }; 72 73 struct iwi_tx_data { 74 bus_dmamap_t map; 75 struct mbuf *m; 76 struct ieee80211_node *ni; 77 }; 78 79 struct iwi_tx_ring { 80 bus_dma_tag_t desc_dmat; 81 bus_dma_tag_t data_dmat; 82 bus_dmamap_t desc_map; 83 bus_addr_t physaddr; 84 bus_addr_t csr_ridx; 85 bus_addr_t csr_widx; 86 struct iwi_tx_desc *desc; 87 struct iwi_tx_data *data; 88 int count; 89 int queued; 90 int cur; 91 int next; 92 }; 93 94 struct iwi_rx_data { 95 bus_dmamap_t map; 96 bus_addr_t physaddr; 97 uint32_t reg; 98 struct mbuf *m; 99 }; 100 101 struct iwi_rx_ring { 102 bus_dma_tag_t data_dmat; 103 struct iwi_rx_data *data; 104 int count; 105 int cur; 106 }; 107 108 struct iwi_node { 109 struct ieee80211_node in_node; 110 int in_station; 111 #define IWI_MAX_IBSSNODE 32 112 }; 113 114 struct iwi_fw { 115 const struct firmware *fp; /* image handle */ 116 const char *data; /* firmware image data */ 117 size_t size; /* firmware image size */ 118 const char *name; /* associated image name */ 119 }; 120 121 struct iwi_vap { 122 struct ieee80211vap iwi_vap; 123 124 int (*iwi_newstate)(struct ieee80211vap *, 125 enum ieee80211_state, int); 126 }; 127 #define IWI_VAP(vap) ((struct iwi_vap *)(vap)) 128 129 struct iwi_softc { 130 struct mtx sc_mtx; 131 struct ieee80211com sc_ic; 132 struct mbufq sc_snd; 133 device_t sc_dev; 134 135 void (*sc_node_free)(struct ieee80211_node *); 136 137 uint8_t sc_mcast[IEEE80211_ADDR_LEN]; 138 struct unrhdr *sc_unr; 139 140 uint32_t flags; 141 #define IWI_FLAG_FW_INITED (1 << 0) 142 #define IWI_FLAG_BUSY (1 << 3) /* busy sending a command */ 143 #define IWI_FLAG_ASSOCIATED (1 << 4) /* currently associated */ 144 #define IWI_FLAG_CHANNEL_SCAN (1 << 5) 145 uint32_t fw_state; 146 #define IWI_FW_IDLE 0 147 #define IWI_FW_LOADING 1 148 #define IWI_FW_ASSOCIATING 2 149 #define IWI_FW_DISASSOCIATING 3 150 #define IWI_FW_SCANNING 4 151 struct iwi_cmd_ring cmdq; 152 struct iwi_tx_ring txq[WME_NUM_AC]; 153 struct iwi_rx_ring rxq; 154 155 struct resource *irq; 156 struct resource *mem; 157 bus_space_tag_t sc_st; 158 bus_space_handle_t sc_sh; 159 void *sc_ih; 160 161 /* 162 * The card needs external firmware images to work, which is made of a 163 * bootloader, microcode and firmware proper. In version 3.00 and 164 * above, all pieces are contained in a single image, preceded by a 165 * struct iwi_firmware_hdr indicating the size of the 3 pieces. 166 * Old firmware < 3.0 has separate boot and ucode, so we need to 167 * load all of them explicitly. 168 * To avoid issues related to fragmentation, we keep the block of 169 * dma-ble memory around until detach time, and reallocate it when 170 * it becomes too small. fw_dma_size is the size currently allocated. 171 */ 172 int fw_dma_size; 173 uint32_t fw_flags; /* allocation status */ 174 #define IWI_FW_HAVE_DMAT 0x01 175 #define IWI_FW_HAVE_MAP 0x02 176 #define IWI_FW_HAVE_PHY 0x04 177 bus_dma_tag_t fw_dmat; 178 bus_dmamap_t fw_map; 179 bus_addr_t fw_physaddr; 180 void *fw_virtaddr; 181 enum ieee80211_opmode fw_mode; /* mode of current firmware */ 182 struct iwi_fw fw_boot; /* boot firmware */ 183 struct iwi_fw fw_uc; /* microcode */ 184 struct iwi_fw fw_fw; /* operating mode support */ 185 186 int curchan; /* current h/w channel # */ 187 int antenna; 188 int bluetooth; 189 struct iwi_associate assoc; 190 struct iwi_wme_params wme[3]; 191 u_int sc_scangen; 192 193 struct task sc_radiontask; /* radio on processing */ 194 struct task sc_radiofftask; /* radio off processing */ 195 struct task sc_restarttask; /* restart adapter processing */ 196 struct task sc_disassoctask; 197 struct task sc_monitortask; 198 199 unsigned int sc_running : 1, /* initialized */ 200 sc_softled : 1, /* enable LED gpio status */ 201 sc_ledstate: 1, /* LED on/off state */ 202 sc_blinking: 1; /* LED blink operation active */ 203 u_int sc_nictype; /* NIC type from EEPROM */ 204 u_int sc_ledpin; /* mask for activity LED */ 205 u_int sc_ledidle; /* idle polling interval */ 206 int sc_ledevent; /* time of last LED event */ 207 u_int8_t sc_rxrate; /* current rx rate for LED */ 208 u_int8_t sc_rxrix; 209 u_int8_t sc_txrate; /* current tx rate for LED */ 210 u_int8_t sc_txrix; 211 u_int16_t sc_ledoff; /* off time for current blink */ 212 struct callout sc_ledtimer; /* led off timer */ 213 struct callout sc_wdtimer; /* watchdog timer */ 214 struct callout sc_rftimer; /* rfkill timer */ 215 216 int sc_tx_timer; 217 int sc_state_timer; /* firmware state timer */ 218 int sc_busy_timer; /* firmware cmd timer */ 219 220 struct iwi_rx_radiotap_header sc_rxtap; 221 struct iwi_tx_radiotap_header sc_txtap; 222 223 struct iwi_notif_link_quality sc_linkqual; 224 int sc_linkqual_valid; 225 }; 226 227 #define IWI_STATE_BEGIN(_sc, _state) do { \ 228 KASSERT(_sc->fw_state == IWI_FW_IDLE, \ 229 ("iwi firmware not idle, state %s", iwi_fw_states[_sc->fw_state]));\ 230 _sc->fw_state = _state; \ 231 _sc->sc_state_timer = 5; \ 232 DPRINTF(("enter %s state\n", iwi_fw_states[_state])); \ 233 } while (0) 234 235 #define IWI_STATE_END(_sc, _state) do { \ 236 if (_sc->fw_state == _state) \ 237 DPRINTF(("exit %s state\n", iwi_fw_states[_state])); \ 238 else \ 239 DPRINTF(("expected %s state, got %s\n", \ 240 iwi_fw_states[_state], iwi_fw_states[_sc->fw_state])); \ 241 _sc->fw_state = IWI_FW_IDLE; \ 242 wakeup(_sc); \ 243 _sc->sc_state_timer = 0; \ 244 } while (0) 245 /* 246 * NB.: This models the only instance of async locking in iwi_init_locked 247 * and must be kept in sync. 248 */ 249 #define IWI_LOCK_INIT(sc) \ 250 mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->sc_dev), \ 251 MTX_NETWORK_LOCK, MTX_DEF) 252 #define IWI_LOCK_DESTROY(sc) mtx_destroy(&(sc)->sc_mtx) 253 #define IWI_LOCK_DECL int __waslocked = 0 254 #define IWI_LOCK_ASSERT(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED) 255 #define IWI_LOCK(sc) do { \ 256 if (!(__waslocked = mtx_owned(&(sc)->sc_mtx))) \ 257 mtx_lock(&(sc)->sc_mtx); \ 258 } while (0) 259 #define IWI_UNLOCK(sc) do { \ 260 if (!__waslocked) \ 261 mtx_unlock(&(sc)->sc_mtx); \ 262 } while (0) 263