1 /* $FreeBSD$ */ 2 3 /*- 4 * Copyright (c) 2004-2006 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 #define IPW_MAX_NSEG 1 31 32 struct ipw_soft_bd { 33 struct ipw_bd *bd; 34 int type; 35 #define IPW_SBD_TYPE_NOASSOC 0 36 #define IPW_SBD_TYPE_COMMAND 1 37 #define IPW_SBD_TYPE_HEADER 2 38 #define IPW_SBD_TYPE_DATA 3 39 void *priv; 40 }; 41 42 struct ipw_soft_hdr { 43 struct ipw_hdr hdr; 44 bus_dmamap_t map; 45 SLIST_ENTRY(ipw_soft_hdr) next; 46 }; 47 48 struct ipw_soft_buf { 49 struct mbuf *m; 50 struct ieee80211_node *ni; 51 bus_dmamap_t map; 52 SLIST_ENTRY(ipw_soft_buf) next; 53 }; 54 55 struct ipw_rx_radiotap_header { 56 struct ieee80211_radiotap_header wr_ihdr; 57 uint8_t wr_flags; 58 uint16_t wr_chan_freq; 59 uint16_t wr_chan_flags; 60 uint8_t wr_antsignal; 61 }; 62 63 #define IPW_RX_RADIOTAP_PRESENT \ 64 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 65 (1 << IEEE80211_RADIOTAP_CHANNEL) | \ 66 (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL)) 67 68 struct ipw_tx_radiotap_header { 69 struct ieee80211_radiotap_header wt_ihdr; 70 uint8_t wt_flags; 71 uint16_t wt_chan_freq; 72 uint16_t wt_chan_flags; 73 }; 74 75 #define IPW_TX_RADIOTAP_PRESENT \ 76 ((1 << IEEE80211_RADIOTAP_FLAGS) | \ 77 (1 << IEEE80211_RADIOTAP_CHANNEL)) 78 79 struct ipw_softc { 80 struct ifnet *sc_ifp; 81 struct ieee80211com sc_ic; 82 int (*sc_newstate)(struct ieee80211com *, 83 enum ieee80211_state, int); 84 device_t sc_dev; 85 86 struct mtx sc_mtx; 87 struct task sc_init_task; 88 struct task sc_scan_task; 89 struct task sc_chan_task; 90 struct task sc_assoc_task; 91 struct task sc_disassoc_task; 92 struct callout sc_wdtimer; /* watchdog timer */ 93 94 uint32_t flags; 95 #define IPW_FLAG_FW_INITED (1 << 0) 96 #define IPW_FLAG_INIT_LOCKED (1 << 1) 97 #define IPW_FLAG_HAS_RADIO_SWITCH (1 << 2) 98 #define IPW_FLAG_HACK (1 << 3) 99 #define IPW_FLAG_SCANNING (1 << 4) 100 #define IPW_FLAG_ENABLED (1 << 5) 101 #define IPW_FLAG_BUSY (1 << 6) 102 #define IPW_FLAG_ASSOCIATED (1 << 7) 103 104 int irq_rid; 105 int mem_rid; 106 struct resource *irq; 107 struct resource *mem; 108 bus_space_tag_t sc_st; 109 bus_space_handle_t sc_sh; 110 void *sc_ih; 111 const struct firmware *sc_firmware; 112 113 int sc_tx_timer; 114 int sc_scan_timer; 115 116 bus_dma_tag_t tbd_dmat; 117 bus_dma_tag_t rbd_dmat; 118 bus_dma_tag_t status_dmat; 119 bus_dma_tag_t cmd_dmat; 120 bus_dma_tag_t hdr_dmat; 121 bus_dma_tag_t txbuf_dmat; 122 bus_dma_tag_t rxbuf_dmat; 123 124 bus_dmamap_t tbd_map; 125 bus_dmamap_t rbd_map; 126 bus_dmamap_t status_map; 127 bus_dmamap_t cmd_map; 128 129 bus_addr_t tbd_phys; 130 bus_addr_t rbd_phys; 131 bus_addr_t status_phys; 132 133 struct ipw_bd *tbd_list; 134 struct ipw_bd *rbd_list; 135 struct ipw_status *status_list; 136 137 struct ipw_cmd cmd; 138 struct ipw_soft_bd stbd_list[IPW_NTBD]; 139 struct ipw_soft_buf tx_sbuf_list[IPW_NDATA]; 140 struct ipw_soft_hdr shdr_list[IPW_NDATA]; 141 struct ipw_soft_bd srbd_list[IPW_NRBD]; 142 struct ipw_soft_buf rx_sbuf_list[IPW_NRBD]; 143 144 SLIST_HEAD(, ipw_soft_hdr) free_shdr; 145 SLIST_HEAD(, ipw_soft_buf) free_sbuf; 146 147 uint32_t table1_base; 148 uint32_t table2_base; 149 150 uint32_t txcur; 151 uint32_t txold; 152 uint32_t rxcur; 153 int txfree; 154 155 int dwelltime; 156 157 struct bpf_if *sc_drvbpf; 158 159 union { 160 struct ipw_rx_radiotap_header th; 161 uint8_t pad[64]; 162 } sc_rxtapu; 163 #define sc_rxtap sc_rxtapu.th 164 int sc_rxtap_len; 165 166 union { 167 struct ipw_tx_radiotap_header th; 168 uint8_t pad[64]; 169 } sc_txtapu; 170 #define sc_txtap sc_txtapu.th 171 int sc_txtap_len; 172 }; 173 174 /* 175 * NB.: This models the only instance of async locking in ipw_init_locked 176 * and must be kept in sync. 177 */ 178 #define IPW_LOCK_DECL int __waslocked = 0 179 #define IPW_LOCK(sc) do { \ 180 if (!(__waslocked = mtx_owned(&(sc)->sc_mtx))) \ 181 mtx_lock(&sc->sc_mtx); \ 182 } while (0) 183 #define IPW_UNLOCK(sc) do { \ 184 if (!__waslocked) \ 185 mtx_unlock(&sc->sc_mtx); \ 186 } while (0) 187 #define IPW_LOCK_ASSERT(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED) 188