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_vap { 80 struct ieee80211vap vap; 81 82 int (*newstate)(struct ieee80211vap *, 83 enum ieee80211_state, int); 84 }; 85 #define IPW_VAP(vap) ((struct ipw_vap *)(vap)) 86 87 struct ipw_softc { 88 struct ifnet *sc_ifp; 89 device_t sc_dev; 90 91 struct mtx sc_mtx; 92 struct task sc_init_task; 93 struct callout sc_wdtimer; /* watchdog timer */ 94 95 uint32_t flags; 96 #define IPW_FLAG_FW_INITED 0x0001 97 #define IPW_FLAG_INIT_LOCKED 0x0002 98 #define IPW_FLAG_HAS_RADIO_SWITCH 0x0004 99 #define IPW_FLAG_HACK 0x0008 100 #define IPW_FLAG_SCANNING 0x0010 101 #define IPW_FLAG_ENABLED 0x0020 102 #define IPW_FLAG_BUSY 0x0040 103 #define IPW_FLAG_ASSOCIATING 0x0080 104 #define IPW_FLAG_ASSOCIATED 0x0100 105 106 int irq_rid; 107 int mem_rid; 108 struct resource *irq; 109 struct resource *mem; 110 bus_space_tag_t sc_st; 111 bus_space_handle_t sc_sh; 112 void *sc_ih; 113 const struct firmware *sc_firmware; 114 115 int sc_tx_timer; 116 int sc_scan_timer; 117 118 bus_dma_tag_t tbd_dmat; 119 bus_dma_tag_t rbd_dmat; 120 bus_dma_tag_t status_dmat; 121 bus_dma_tag_t cmd_dmat; 122 bus_dma_tag_t hdr_dmat; 123 bus_dma_tag_t txbuf_dmat; 124 bus_dma_tag_t rxbuf_dmat; 125 126 bus_dmamap_t tbd_map; 127 bus_dmamap_t rbd_map; 128 bus_dmamap_t status_map; 129 bus_dmamap_t cmd_map; 130 131 bus_addr_t tbd_phys; 132 bus_addr_t rbd_phys; 133 bus_addr_t status_phys; 134 135 struct ipw_bd *tbd_list; 136 struct ipw_bd *rbd_list; 137 struct ipw_status *status_list; 138 139 struct ipw_cmd cmd; 140 struct ipw_soft_bd stbd_list[IPW_NTBD]; 141 struct ipw_soft_buf tx_sbuf_list[IPW_NDATA]; 142 struct ipw_soft_hdr shdr_list[IPW_NDATA]; 143 struct ipw_soft_bd srbd_list[IPW_NRBD]; 144 struct ipw_soft_buf rx_sbuf_list[IPW_NRBD]; 145 146 SLIST_HEAD(, ipw_soft_hdr) free_shdr; 147 SLIST_HEAD(, ipw_soft_buf) free_sbuf; 148 149 uint32_t table1_base; 150 uint32_t table2_base; 151 152 uint32_t txcur; 153 uint32_t txold; 154 uint32_t rxcur; 155 int txfree; 156 157 struct ipw_rx_radiotap_header sc_rxtap; 158 int sc_rxtap_len; 159 160 struct ipw_tx_radiotap_header sc_txtap; 161 int sc_txtap_len; 162 }; 163 164 /* 165 * NB.: This models the only instance of async locking in ipw_init_locked 166 * and must be kept in sync. 167 */ 168 #define IPW_LOCK_DECL int __waslocked = 0 169 #define IPW_LOCK(sc) do { \ 170 if (!(__waslocked = mtx_owned(&(sc)->sc_mtx))) \ 171 mtx_lock(&sc->sc_mtx); \ 172 } while (0) 173 #define IPW_UNLOCK(sc) do { \ 174 if (!__waslocked) \ 175 mtx_unlock(&sc->sc_mtx); \ 176 } while (0) 177 #define IPW_LOCK_ASSERT(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED) 178