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 uint8_t wr_antsignal; 37 uint8_t wr_antenna; 38 }; 39 40 #define IWI_RX_RADIOTAP_PRESENT \ 41 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 42 (1 << IEEE80211_RADIOTAP_RATE) | \ 43 (1 << IEEE80211_RADIOTAP_CHANNEL) | \ 44 (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) | \ 45 (1 << IEEE80211_RADIOTAP_ANTENNA)) 46 47 struct iwi_tx_radiotap_header { 48 struct ieee80211_radiotap_header wt_ihdr; 49 uint8_t wt_flags; 50 uint16_t wt_chan_freq; 51 uint16_t wt_chan_flags; 52 }; 53 54 #define IWI_TX_RADIOTAP_PRESENT \ 55 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 56 (1 << IEEE80211_RADIOTAP_CHANNEL)) 57 58 struct iwi_cmd_ring { 59 bus_dma_tag_t desc_dmat; 60 bus_dmamap_t desc_map; 61 bus_addr_t physaddr; 62 struct iwi_cmd_desc *desc; 63 int count; 64 int queued; 65 int cur; 66 int next; 67 }; 68 69 struct iwi_tx_data { 70 bus_dmamap_t map; 71 struct mbuf *m; 72 struct ieee80211_node *ni; 73 }; 74 75 struct iwi_tx_ring { 76 bus_dma_tag_t desc_dmat; 77 bus_dma_tag_t data_dmat; 78 bus_dmamap_t desc_map; 79 bus_addr_t physaddr; 80 bus_addr_t csr_ridx; 81 bus_addr_t csr_widx; 82 struct iwi_tx_desc *desc; 83 struct iwi_tx_data *data; 84 int count; 85 int queued; 86 int cur; 87 int next; 88 }; 89 90 struct iwi_rx_data { 91 bus_dmamap_t map; 92 bus_addr_t physaddr; 93 uint32_t reg; 94 struct mbuf *m; 95 }; 96 97 struct iwi_rx_ring { 98 bus_dma_tag_t data_dmat; 99 struct iwi_rx_data *data; 100 int count; 101 int cur; 102 }; 103 104 struct iwi_node { 105 struct ieee80211_node in_node; 106 int in_station; 107 #define IWI_MAX_IBSSNODE 32 108 }; 109 110 struct iwi_fw { 111 const struct firmware *fp; /* image handle */ 112 const char *data; /* firmware image data */ 113 size_t size; /* firmware image size */ 114 const char *name; /* associated image name */ 115 }; 116 117 struct iwi_softc { 118 struct ifnet *sc_ifp; 119 struct ieee80211com sc_ic; 120 int (*sc_newstate)(struct ieee80211com *, 121 enum ieee80211_state, int); 122 void (*sc_node_free)(struct ieee80211_node *); 123 device_t sc_dev; 124 125 struct mtx sc_mtx; 126 uint8_t sc_mcast[IEEE80211_ADDR_LEN]; 127 struct unrhdr *sc_unr; 128 struct taskqueue *sc_tq; /* private task queue */ 129 #if __FreeBSD_version < 700000 130 struct proc *sc_tqproc; 131 #endif 132 133 uint32_t flags; 134 #define IWI_FLAG_FW_INITED (1 << 0) 135 #define IWI_FLAG_SCANNING (1 << 1) 136 #define IWI_FLAG_FW_LOADING (1 << 2) 137 #define IWI_FLAG_BUSY (1 << 3) /* busy sending a command */ 138 #define IWI_FLAG_ASSOCIATED (1 << 4) /* currently associated */ 139 140 struct iwi_cmd_ring cmdq; 141 struct iwi_tx_ring txq[WME_NUM_AC]; 142 struct iwi_rx_ring rxq; 143 144 struct resource *irq; 145 struct resource *mem; 146 bus_space_tag_t sc_st; 147 bus_space_handle_t sc_sh; 148 void *sc_ih; 149 int mem_rid; 150 int irq_rid; 151 152 /* 153 * The card needs external firmware images to work, which is made of a 154 * bootloader, microcode and firmware proper. In version 3.00 and 155 * above, all pieces are contained in a single image, preceded by a 156 * struct iwi_firmware_hdr indicating the size of the 3 pieces. 157 * Old firmware < 3.0 has separate boot and ucode, so we need to 158 * load all of them explicitly. 159 * To avoid issues related to fragmentation, we keep the block of 160 * dma-ble memory around until detach time, and reallocate it when 161 * it becomes too small. fw_dma_size is the size currently allocated. 162 */ 163 int fw_dma_size; 164 uint32_t fw_flags; /* allocation status */ 165 #define IWI_FW_HAVE_DMAT 0x01 166 #define IWI_FW_HAVE_MAP 0x02 167 #define IWI_FW_HAVE_PHY 0x04 168 bus_dma_tag_t fw_dmat; 169 bus_dmamap_t fw_map; 170 bus_addr_t fw_physaddr; 171 void *fw_virtaddr; 172 enum ieee80211_opmode fw_mode; /* mode of current firmware */ 173 struct iwi_fw fw_boot; /* boot firmware */ 174 struct iwi_fw fw_uc; /* microcode */ 175 struct iwi_fw fw_fw; /* operating mode support */ 176 177 int curchan; /* current h/w channel # */ 178 int antenna; 179 int dwelltime; 180 int bluetooth; 181 struct iwi_associate assoc; 182 struct iwi_wme_params wme[3]; 183 184 struct task sc_radiontask; /* radio on processing */ 185 struct task sc_radiofftask; /* radio off processing */ 186 struct task sc_scanstarttask;/* scan start processing */ 187 struct task sc_scanaborttask;/* scan abort processing */ 188 struct task sc_scandonetask;/* scan completed processing */ 189 struct task sc_scantask; /* scan channel processing */ 190 struct task sc_setwmetask; /* set wme params processing */ 191 struct task sc_downtask; /* disassociate processing */ 192 struct task sc_restarttask; /* restart adapter processing */ 193 194 unsigned int sc_softled : 1, /* enable LED gpio status */ 195 sc_ledstate: 1, /* LED on/off state */ 196 sc_blinking: 1; /* LED blink operation active */ 197 u_int sc_nictype; /* NIC type from EEPROM */ 198 u_int sc_ledpin; /* mask for activity LED */ 199 u_int sc_ledidle; /* idle polling interval */ 200 int sc_ledevent; /* time of last LED event */ 201 u_int8_t sc_rxrate; /* current rx rate for LED */ 202 u_int8_t sc_rxrix; 203 u_int8_t sc_txrate; /* current tx rate for LED */ 204 u_int8_t sc_txrix; 205 u_int16_t sc_ledoff; /* off time for current blink */ 206 struct callout sc_ledtimer; /* led off timer */ 207 208 int sc_tx_timer; 209 int sc_rfkill_timer;/* poll for rfkill change */ 210 int sc_scan_timer; /* scan request timeout */ 211 212 struct bpf_if *sc_drvbpf; 213 214 union { 215 struct iwi_rx_radiotap_header th; 216 uint8_t pad[64]; 217 } sc_rxtapu; 218 #define sc_rxtap sc_rxtapu.th 219 int sc_rxtap_len; 220 221 union { 222 struct iwi_tx_radiotap_header th; 223 uint8_t pad[64]; 224 } sc_txtapu; 225 #define sc_txtap sc_txtapu.th 226 int sc_txtap_len; 227 }; 228 229 /* 230 * NB.: This models the only instance of async locking in iwi_init_locked 231 * and must be kept in sync. 232 */ 233 #define IWI_LOCK_DECL int __waslocked = 0 234 #define IWI_LOCK_CHECK(sc) do { \ 235 if (!mtx_owned(&(sc)->sc_mtx)) \ 236 DPRINTF(("%s iwi_lock not held\n", __func__)); \ 237 } while (0) 238 #define IWI_LOCK(sc) do { \ 239 if (!(__waslocked = mtx_owned(&(sc)->sc_mtx))) \ 240 mtx_lock(&(sc)->sc_mtx); \ 241 } while (0) 242 #define IWI_UNLOCK(sc) do { \ 243 if (!__waslocked) \ 244 mtx_unlock(&(sc)->sc_mtx); \ 245 } while (0) 246