Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/dev/iwn/if_iwn.c
Version:
- FREEBSD - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-2 - FREEBSD-11-1 - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-4 - FREEBSD-10-3 - FREEBSD-10-2 - FREEBSD-10-1 - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-3 - FREEBSD-9-2 - FREEBSD-9-1 - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-4 - FREEBSD-8-3 - FREEBSD-8-2 - FREEBSD-8-1 - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-4 - FREEBSD-7-3 - FREEBSD-7-2 - FREEBSD-7-1 - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-4 - FREEBSD-6-3 - FREEBSD-6-2 - FREEBSD-6-1 - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-5 - FREEBSD-5-4 - FREEBSD-5-3 - FREEBSD-5-2 - FREEBSD-5-1 - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - linux-2.6 - linux-2.4.22 - MK83 - MK84 - PLAN9 - DFBSD - NETBSD - NETBSD5 - NETBSD4 - NETBSD3 - NETBSD20 - OPENBSD - xnu-517 - xnu-792 - xnu-792.6.70 - xnu-1228 - xnu-1456.1.26 - xnu-1699.24.8 - xnu-2050.18.24 - OPENSOLARIS - minix-3-1-1
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /*- 2 * Copyright (c) 2007-2009 Damien Bergamini <damien.bergamini@free.fr> 3 * Copyright (c) 2008 Benjamin Close <benjsc@FreeBSD.org> 4 * Copyright (c) 2008 Sam Leffler, Errno Consulting 5 * Copyright (c) 2011 Intel Corporation 6 * Copyright (c) 2013 Cedric GROSS <c.gross@kreiz-it.fr> 7 * Copyright (c) 2013 Adrian Chadd <adrian@FreeBSD.org> 8 * 9 * Permission to use, copy, modify, and distribute this software for any 10 * purpose with or without fee is hereby granted, provided that the above 11 * copyright notice and this permission notice appear in all copies. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 */ 21 22 /* 23 * Driver for Intel WiFi Link 4965 and 1000/5000/6000 Series 802.11 network 24 * adapters. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD: releng/11.2/sys/dev/iwn/if_iwn.c 314574 2017-03-03 00:47:42Z avos $"); 29 30 #include "opt_wlan.h" 31 #include "opt_iwn.h" 32 33 #include <sys/param.h> 34 #include <sys/sockio.h> 35 #include <sys/sysctl.h> 36 #include <sys/mbuf.h> 37 #include <sys/kernel.h> 38 #include <sys/socket.h> 39 #include <sys/systm.h> 40 #include <sys/malloc.h> 41 #include <sys/bus.h> 42 #include <sys/conf.h> 43 #include <sys/rman.h> 44 #include <sys/endian.h> 45 #include <sys/firmware.h> 46 #include <sys/limits.h> 47 #include <sys/module.h> 48 #include <sys/priv.h> 49 #include <sys/queue.h> 50 #include <sys/taskqueue.h> 51 52 #include <machine/bus.h> 53 #include <machine/resource.h> 54 #include <machine/clock.h> 55 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcivar.h> 58 59 #include <net/if.h> 60 #include <net/if_var.h> 61 #include <net/if_dl.h> 62 #include <net/if_media.h> 63 64 #include <netinet/in.h> 65 #include <netinet/if_ether.h> 66 67 #include <net80211/ieee80211_var.h> 68 #include <net80211/ieee80211_radiotap.h> 69 #include <net80211/ieee80211_regdomain.h> 70 #include <net80211/ieee80211_ratectl.h> 71 72 #include <dev/iwn/if_iwnreg.h> 73 #include <dev/iwn/if_iwnvar.h> 74 #include <dev/iwn/if_iwn_devid.h> 75 #include <dev/iwn/if_iwn_chip_cfg.h> 76 #include <dev/iwn/if_iwn_debug.h> 77 #include <dev/iwn/if_iwn_ioctl.h> 78 79 struct iwn_ident { 80 uint16_t vendor; 81 uint16_t device; 82 const char *name; 83 }; 84 85 static const struct iwn_ident iwn_ident_table[] = { 86 { 0x8086, IWN_DID_6x05_1, "Intel Centrino Advanced-N 6205" }, 87 { 0x8086, IWN_DID_1000_1, "Intel Centrino Wireless-N 1000" }, 88 { 0x8086, IWN_DID_1000_2, "Intel Centrino Wireless-N 1000" }, 89 { 0x8086, IWN_DID_6x05_2, "Intel Centrino Advanced-N 6205" }, 90 { 0x8086, IWN_DID_6050_1, "Intel Centrino Advanced-N + WiMAX 6250" }, 91 { 0x8086, IWN_DID_6050_2, "Intel Centrino Advanced-N + WiMAX 6250" }, 92 { 0x8086, IWN_DID_x030_1, "Intel Centrino Wireless-N 1030" }, 93 { 0x8086, IWN_DID_x030_2, "Intel Centrino Wireless-N 1030" }, 94 { 0x8086, IWN_DID_x030_3, "Intel Centrino Advanced-N 6230" }, 95 { 0x8086, IWN_DID_x030_4, "Intel Centrino Advanced-N 6230" }, 96 { 0x8086, IWN_DID_6150_1, "Intel Centrino Wireless-N + WiMAX 6150" }, 97 { 0x8086, IWN_DID_6150_2, "Intel Centrino Wireless-N + WiMAX 6150" }, 98 { 0x8086, IWN_DID_2x00_1, "Intel(R) Centrino(R) Wireless-N 2200 BGN" }, 99 { 0x8086, IWN_DID_2x00_2, "Intel(R) Centrino(R) Wireless-N 2200 BGN" }, 100 /* XXX 2200D is IWN_SDID_2x00_4; there's no way to express this here! */ 101 { 0x8086, IWN_DID_2x30_1, "Intel Centrino Wireless-N 2230" }, 102 { 0x8086, IWN_DID_2x30_2, "Intel Centrino Wireless-N 2230" }, 103 { 0x8086, IWN_DID_130_1, "Intel Centrino Wireless-N 130" }, 104 { 0x8086, IWN_DID_130_2, "Intel Centrino Wireless-N 130" }, 105 { 0x8086, IWN_DID_100_1, "Intel Centrino Wireless-N 100" }, 106 { 0x8086, IWN_DID_100_2, "Intel Centrino Wireless-N 100" }, 107 { 0x8086, IWN_DID_105_1, "Intel Centrino Wireless-N 105" }, 108 { 0x8086, IWN_DID_105_2, "Intel Centrino Wireless-N 105" }, 109 { 0x8086, IWN_DID_135_1, "Intel Centrino Wireless-N 135" }, 110 { 0x8086, IWN_DID_135_2, "Intel Centrino Wireless-N 135" }, 111 { 0x8086, IWN_DID_4965_1, "Intel Wireless WiFi Link 4965" }, 112 { 0x8086, IWN_DID_6x00_1, "Intel Centrino Ultimate-N 6300" }, 113 { 0x8086, IWN_DID_6x00_2, "Intel Centrino Advanced-N 6200" }, 114 { 0x8086, IWN_DID_4965_2, "Intel Wireless WiFi Link 4965" }, 115 { 0x8086, IWN_DID_4965_3, "Intel Wireless WiFi Link 4965" }, 116 { 0x8086, IWN_DID_5x00_1, "Intel WiFi Link 5100" }, 117 { 0x8086, IWN_DID_4965_4, "Intel Wireless WiFi Link 4965" }, 118 { 0x8086, IWN_DID_5x00_3, "Intel Ultimate N WiFi Link 5300" }, 119 { 0x8086, IWN_DID_5x00_4, "Intel Ultimate N WiFi Link 5300" }, 120 { 0x8086, IWN_DID_5x00_2, "Intel WiFi Link 5100" }, 121 { 0x8086, IWN_DID_6x00_3, "Intel Centrino Ultimate-N 6300" }, 122 { 0x8086, IWN_DID_6x00_4, "Intel Centrino Advanced-N 6200" }, 123 { 0x8086, IWN_DID_5x50_1, "Intel WiMAX/WiFi Link 5350" }, 124 { 0x8086, IWN_DID_5x50_2, "Intel WiMAX/WiFi Link 5350" }, 125 { 0x8086, IWN_DID_5x50_3, "Intel WiMAX/WiFi Link 5150" }, 126 { 0x8086, IWN_DID_5x50_4, "Intel WiMAX/WiFi Link 5150" }, 127 { 0x8086, IWN_DID_6035_1, "Intel Centrino Advanced 6235" }, 128 { 0x8086, IWN_DID_6035_2, "Intel Centrino Advanced 6235" }, 129 { 0, 0, NULL } 130 }; 131 132 static int iwn_probe(device_t); 133 static int iwn_attach(device_t); 134 static int iwn4965_attach(struct iwn_softc *, uint16_t); 135 static int iwn5000_attach(struct iwn_softc *, uint16_t); 136 static int iwn_config_specific(struct iwn_softc *, uint16_t); 137 static void iwn_radiotap_attach(struct iwn_softc *); 138 static void iwn_sysctlattach(struct iwn_softc *); 139 static struct ieee80211vap *iwn_vap_create(struct ieee80211com *, 140 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 141 const uint8_t [IEEE80211_ADDR_LEN], 142 const uint8_t [IEEE80211_ADDR_LEN]); 143 static void iwn_vap_delete(struct ieee80211vap *); 144 static int iwn_detach(device_t); 145 static int iwn_shutdown(device_t); 146 static int iwn_suspend(device_t); 147 static int iwn_resume(device_t); 148 static int iwn_nic_lock(struct iwn_softc *); 149 static int iwn_eeprom_lock(struct iwn_softc *); 150 static int iwn_init_otprom(struct iwn_softc *); 151 static int iwn_read_prom_data(struct iwn_softc *, uint32_t, void *, int); 152 static void iwn_dma_map_addr(void *, bus_dma_segment_t *, int, int); 153 static int iwn_dma_contig_alloc(struct iwn_softc *, struct iwn_dma_info *, 154 void **, bus_size_t, bus_size_t); 155 static void iwn_dma_contig_free(struct iwn_dma_info *); 156 static int iwn_alloc_sched(struct iwn_softc *); 157 static void iwn_free_sched(struct iwn_softc *); 158 static int iwn_alloc_kw(struct iwn_softc *); 159 static void iwn_free_kw(struct iwn_softc *); 160 static int iwn_alloc_ict(struct iwn_softc *); 161 static void iwn_free_ict(struct iwn_softc *); 162 static int iwn_alloc_fwmem(struct iwn_softc *); 163 static void iwn_free_fwmem(struct iwn_softc *); 164 static int iwn_alloc_rx_ring(struct iwn_softc *, struct iwn_rx_ring *); 165 static void iwn_reset_rx_ring(struct iwn_softc *, struct iwn_rx_ring *); 166 static void iwn_free_rx_ring(struct iwn_softc *, struct iwn_rx_ring *); 167 static int iwn_alloc_tx_ring(struct iwn_softc *, struct iwn_tx_ring *, 168 int); 169 static void iwn_reset_tx_ring(struct iwn_softc *, struct iwn_tx_ring *); 170 static void iwn_free_tx_ring(struct iwn_softc *, struct iwn_tx_ring *); 171 static void iwn5000_ict_reset(struct iwn_softc *); 172 static int iwn_read_eeprom(struct iwn_softc *, 173 uint8_t macaddr[IEEE80211_ADDR_LEN]); 174 static void iwn4965_read_eeprom(struct iwn_softc *); 175 #ifdef IWN_DEBUG 176 static void iwn4965_print_power_group(struct iwn_softc *, int); 177 #endif 178 static void iwn5000_read_eeprom(struct iwn_softc *); 179 static uint32_t iwn_eeprom_channel_flags(struct iwn_eeprom_chan *); 180 static void iwn_read_eeprom_band(struct iwn_softc *, int, int, int *, 181 struct ieee80211_channel[]); 182 static void iwn_read_eeprom_ht40(struct iwn_softc *, int, int, int *, 183 struct ieee80211_channel[]); 184 static void iwn_read_eeprom_channels(struct iwn_softc *, int, uint32_t); 185 static struct iwn_eeprom_chan *iwn_find_eeprom_channel(struct iwn_softc *, 186 struct ieee80211_channel *); 187 static void iwn_getradiocaps(struct ieee80211com *, int, int *, 188 struct ieee80211_channel[]); 189 static int iwn_setregdomain(struct ieee80211com *, 190 struct ieee80211_regdomain *, int, 191 struct ieee80211_channel[]); 192 static void iwn_read_eeprom_enhinfo(struct iwn_softc *); 193 static struct ieee80211_node *iwn_node_alloc(struct ieee80211vap *, 194 const uint8_t mac[IEEE80211_ADDR_LEN]); 195 static void iwn_newassoc(struct ieee80211_node *, int); 196 static int iwn_media_change(struct ifnet *); 197 static int iwn_newstate(struct ieee80211vap *, enum ieee80211_state, int); 198 static void iwn_calib_timeout(void *); 199 static void iwn_rx_phy(struct iwn_softc *, struct iwn_rx_desc *, 200 struct iwn_rx_data *); 201 static void iwn_rx_done(struct iwn_softc *, struct iwn_rx_desc *, 202 struct iwn_rx_data *); 203 static void iwn_rx_compressed_ba(struct iwn_softc *, struct iwn_rx_desc *, 204 struct iwn_rx_data *); 205 static void iwn5000_rx_calib_results(struct iwn_softc *, 206 struct iwn_rx_desc *, struct iwn_rx_data *); 207 static void iwn_rx_statistics(struct iwn_softc *, struct iwn_rx_desc *, 208 struct iwn_rx_data *); 209 static void iwn4965_tx_done(struct iwn_softc *, struct iwn_rx_desc *, 210 struct iwn_rx_data *); 211 static void iwn5000_tx_done(struct iwn_softc *, struct iwn_rx_desc *, 212 struct iwn_rx_data *); 213 static void iwn_tx_done(struct iwn_softc *, struct iwn_rx_desc *, int, 214 uint8_t); 215 static void iwn_ampdu_tx_done(struct iwn_softc *, int, int, int, int, void *); 216 static void iwn_cmd_done(struct iwn_softc *, struct iwn_rx_desc *); 217 static void iwn_notif_intr(struct iwn_softc *); 218 static void iwn_wakeup_intr(struct iwn_softc *); 219 static void iwn_rftoggle_intr(struct iwn_softc *); 220 static void iwn_fatal_intr(struct iwn_softc *); 221 static void iwn_intr(void *); 222 static void iwn4965_update_sched(struct iwn_softc *, int, int, uint8_t, 223 uint16_t); 224 static void iwn5000_update_sched(struct iwn_softc *, int, int, uint8_t, 225 uint16_t); 226 #ifdef notyet 227 static void iwn5000_reset_sched(struct iwn_softc *, int, int); 228 #endif 229 static int iwn_tx_data(struct iwn_softc *, struct mbuf *, 230 struct ieee80211_node *); 231 static int iwn_tx_data_raw(struct iwn_softc *, struct mbuf *, 232 struct ieee80211_node *, 233 const struct ieee80211_bpf_params *params); 234 static void iwn_xmit_task(void *arg0, int pending); 235 static int iwn_raw_xmit(struct ieee80211_node *, struct mbuf *, 236 const struct ieee80211_bpf_params *); 237 static int iwn_transmit(struct ieee80211com *, struct mbuf *); 238 static void iwn_scan_timeout(void *); 239 static void iwn_watchdog(void *); 240 static int iwn_ioctl(struct ieee80211com *, u_long , void *); 241 static void iwn_parent(struct ieee80211com *); 242 static int iwn_cmd(struct iwn_softc *, int, const void *, int, int); 243 static int iwn4965_add_node(struct iwn_softc *, struct iwn_node_info *, 244 int); 245 static int iwn5000_add_node(struct iwn_softc *, struct iwn_node_info *, 246 int); 247 static int iwn_set_link_quality(struct iwn_softc *, 248 struct ieee80211_node *); 249 static int iwn_add_broadcast_node(struct iwn_softc *, int); 250 static int iwn_updateedca(struct ieee80211com *); 251 static void iwn_update_mcast(struct ieee80211com *); 252 static void iwn_set_led(struct iwn_softc *, uint8_t, uint8_t, uint8_t); 253 static int iwn_set_critical_temp(struct iwn_softc *); 254 static int iwn_set_timing(struct iwn_softc *, struct ieee80211_node *); 255 static void iwn4965_power_calibration(struct iwn_softc *, int); 256 static int iwn4965_set_txpower(struct iwn_softc *, 257 struct ieee80211_channel *, int); 258 static int iwn5000_set_txpower(struct iwn_softc *, 259 struct ieee80211_channel *, int); 260 static int iwn4965_get_rssi(struct iwn_softc *, struct iwn_rx_stat *); 261 static int iwn5000_get_rssi(struct iwn_softc *, struct iwn_rx_stat *); 262 static int iwn_get_noise(const struct iwn_rx_general_stats *); 263 static int iwn4965_get_temperature(struct iwn_softc *); 264 static int iwn5000_get_temperature(struct iwn_softc *); 265 static int iwn_init_sensitivity(struct iwn_softc *); 266 static void iwn_collect_noise(struct iwn_softc *, 267 const struct iwn_rx_general_stats *); 268 static int iwn4965_init_gains(struct iwn_softc *); 269 static int iwn5000_init_gains(struct iwn_softc *); 270 static int iwn4965_set_gains(struct iwn_softc *); 271 static int iwn5000_set_gains(struct iwn_softc *); 272 static void iwn_tune_sensitivity(struct iwn_softc *, 273 const struct iwn_rx_stats *); 274 static void iwn_save_stats_counters(struct iwn_softc *, 275 const struct iwn_stats *); 276 static int iwn_send_sensitivity(struct iwn_softc *); 277 static void iwn_check_rx_recovery(struct iwn_softc *, struct iwn_stats *); 278 static int iwn_set_pslevel(struct iwn_softc *, int, int, int); 279 static int iwn_send_btcoex(struct iwn_softc *); 280 static int iwn_send_advanced_btcoex(struct iwn_softc *); 281 static int iwn5000_runtime_calib(struct iwn_softc *); 282 static int iwn_config(struct iwn_softc *); 283 static int iwn_scan(struct iwn_softc *, struct ieee80211vap *, 284 struct ieee80211_scan_state *, struct ieee80211_channel *); 285 static int iwn_auth(struct iwn_softc *, struct ieee80211vap *vap); 286 static int iwn_run(struct iwn_softc *, struct ieee80211vap *vap); 287 static int iwn_ampdu_rx_start(struct ieee80211_node *, 288 struct ieee80211_rx_ampdu *, int, int, int); 289 static void iwn_ampdu_rx_stop(struct ieee80211_node *, 290 struct ieee80211_rx_ampdu *); 291 static int iwn_addba_request(struct ieee80211_node *, 292 struct ieee80211_tx_ampdu *, int, int, int); 293 static int iwn_addba_response(struct ieee80211_node *, 294 struct ieee80211_tx_ampdu *, int, int, int); 295 static int iwn_ampdu_tx_start(struct ieee80211com *, 296 struct ieee80211_node *, uint8_t); 297 static void iwn_ampdu_tx_stop(struct ieee80211_node *, 298 struct ieee80211_tx_ampdu *); 299 static void iwn4965_ampdu_tx_start(struct iwn_softc *, 300 struct ieee80211_node *, int, uint8_t, uint16_t); 301 static void iwn4965_ampdu_tx_stop(struct iwn_softc *, int, 302 uint8_t, uint16_t); 303 static void iwn5000_ampdu_tx_start(struct iwn_softc *, 304 struct ieee80211_node *, int, uint8_t, uint16_t); 305 static void iwn5000_ampdu_tx_stop(struct iwn_softc *, int, 306 uint8_t, uint16_t); 307 static int iwn5000_query_calibration(struct iwn_softc *); 308 static int iwn5000_send_calibration(struct iwn_softc *); 309 static int iwn5000_send_wimax_coex(struct iwn_softc *); 310 static int iwn5000_crystal_calib(struct iwn_softc *); 311 static int iwn5000_temp_offset_calib(struct iwn_softc *); 312 static int iwn5000_temp_offset_calibv2(struct iwn_softc *); 313 static int iwn4965_post_alive(struct iwn_softc *); 314 static int iwn5000_post_alive(struct iwn_softc *); 315 static int iwn4965_load_bootcode(struct iwn_softc *, const uint8_t *, 316 int); 317 static int iwn4965_load_firmware(struct iwn_softc *); 318 static int iwn5000_load_firmware_section(struct iwn_softc *, uint32_t, 319 const uint8_t *, int); 320 static int iwn5000_load_firmware(struct iwn_softc *); 321 static int iwn_read_firmware_leg(struct iwn_softc *, 322 struct iwn_fw_info *); 323 static int iwn_read_firmware_tlv(struct iwn_softc *, 324 struct iwn_fw_info *, uint16_t); 325 static int iwn_read_firmware(struct iwn_softc *); 326 static void iwn_unload_firmware(struct iwn_softc *); 327 static int iwn_clock_wait(struct iwn_softc *); 328 static int iwn_apm_init(struct iwn_softc *); 329 static void iwn_apm_stop_master(struct iwn_softc *); 330 static void iwn_apm_stop(struct iwn_softc *); 331 static int iwn4965_nic_config(struct iwn_softc *); 332 static int iwn5000_nic_config(struct iwn_softc *); 333 static int iwn_hw_prepare(struct iwn_softc *); 334 static int iwn_hw_init(struct iwn_softc *); 335 static void iwn_hw_stop(struct iwn_softc *); 336 static void iwn_radio_on(void *, int); 337 static void iwn_radio_off(void *, int); 338 static void iwn_panicked(void *, int); 339 static void iwn_init_locked(struct iwn_softc *); 340 static void iwn_init(struct iwn_softc *); 341 static void iwn_stop_locked(struct iwn_softc *); 342 static void iwn_stop(struct iwn_softc *); 343 static void iwn_scan_start(struct ieee80211com *); 344 static void iwn_scan_end(struct ieee80211com *); 345 static void iwn_set_channel(struct ieee80211com *); 346 static void iwn_scan_curchan(struct ieee80211_scan_state *, unsigned long); 347 static void iwn_scan_mindwell(struct ieee80211_scan_state *); 348 #ifdef IWN_DEBUG 349 static char *iwn_get_csr_string(int); 350 static void iwn_debug_register(struct iwn_softc *); 351 #endif 352 353 static device_method_t iwn_methods[] = { 354 /* Device interface */ 355 DEVMETHOD(device_probe, iwn_probe), 356 DEVMETHOD(device_attach, iwn_attach), 357 DEVMETHOD(device_detach, iwn_detach), 358 DEVMETHOD(device_shutdown, iwn_shutdown), 359 DEVMETHOD(device_suspend, iwn_suspend), 360 DEVMETHOD(device_resume, iwn_resume), 361 362 DEVMETHOD_END 363 }; 364 365 static driver_t iwn_driver = { 366 "iwn", 367 iwn_methods, 368 sizeof(struct iwn_softc) 369 }; 370 static devclass_t iwn_devclass; 371 372 DRIVER_MODULE(iwn, pci, iwn_driver, iwn_devclass, NULL, NULL); 373 374 MODULE_VERSION(iwn, 1); 375 376 MODULE_DEPEND(iwn, firmware, 1, 1, 1); 377 MODULE_DEPEND(iwn, pci, 1, 1, 1); 378 MODULE_DEPEND(iwn, wlan, 1, 1, 1); 379 380 static d_ioctl_t iwn_cdev_ioctl; 381 static d_open_t iwn_cdev_open; 382 static d_close_t iwn_cdev_close; 383 384 static struct cdevsw iwn_cdevsw = { 385 .d_version = D_VERSION, 386 .d_flags = 0, 387 .d_open = iwn_cdev_open, 388 .d_close = iwn_cdev_close, 389 .d_ioctl = iwn_cdev_ioctl, 390 .d_name = "iwn", 391 }; 392 393 static int 394 iwn_probe(device_t dev) 395 { 396 const struct iwn_ident *ident; 397 398 for (ident = iwn_ident_table; ident->name != NULL; ident++) { 399 if (pci_get_vendor(dev) == ident->vendor && 400 pci_get_device(dev) == ident->device) { 401 device_set_desc(dev, ident->name); 402 return (BUS_PROBE_DEFAULT); 403 } 404 } 405 return ENXIO; 406 } 407 408 static int 409 iwn_is_3stream_device(struct iwn_softc *sc) 410 { 411 /* XXX for now only 5300, until the 5350 can be tested */ 412 if (sc->hw_type == IWN_HW_REV_TYPE_5300) 413 return (1); 414 return (0); 415 } 416 417 static int 418 iwn_attach(device_t dev) 419 { 420 struct iwn_softc *sc = device_get_softc(dev); 421 struct ieee80211com *ic; 422 int i, error, rid; 423 424 sc->sc_dev = dev; 425 426 #ifdef IWN_DEBUG 427 error = resource_int_value(device_get_name(sc->sc_dev), 428 device_get_unit(sc->sc_dev), "debug", &(sc->sc_debug)); 429 if (error != 0) 430 sc->sc_debug = 0; 431 #else 432 sc->sc_debug = 0; 433 #endif 434 435 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: begin\n",__func__); 436 437 /* 438 * Get the offset of the PCI Express Capability Structure in PCI 439 * Configuration Space. 440 */ 441 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 442 if (error != 0) { 443 device_printf(dev, "PCIe capability structure not found!\n"); 444 return error; 445 } 446 447 /* Clear device-specific "PCI retry timeout" register (41h). */ 448 pci_write_config(dev, 0x41, 0, 1); 449 450 /* Enable bus-mastering. */ 451 pci_enable_busmaster(dev); 452 453 rid = PCIR_BAR(0); 454 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 455 RF_ACTIVE); 456 if (sc->mem == NULL) { 457 device_printf(dev, "can't map mem space\n"); 458 error = ENOMEM; 459 return error; 460 } 461 sc->sc_st = rman_get_bustag(sc->mem); 462 sc->sc_sh = rman_get_bushandle(sc->mem); 463 464 i = 1; 465 rid = 0; 466 if (pci_alloc_msi(dev, &i) == 0) 467 rid = 1; 468 /* Install interrupt handler. */ 469 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 470 (rid != 0 ? 0 : RF_SHAREABLE)); 471 if (sc->irq == NULL) { 472 device_printf(dev, "can't map interrupt\n"); 473 error = ENOMEM; 474 goto fail; 475 } 476 477 IWN_LOCK_INIT(sc); 478 479 /* Read hardware revision and attach. */ 480 sc->hw_type = (IWN_READ(sc, IWN_HW_REV) >> IWN_HW_REV_TYPE_SHIFT) 481 & IWN_HW_REV_TYPE_MASK; 482 sc->subdevice_id = pci_get_subdevice(dev); 483 484 /* 485 * 4965 versus 5000 and later have different methods. 486 * Let's set those up first. 487 */ 488 if (sc->hw_type == IWN_HW_REV_TYPE_4965) 489 error = iwn4965_attach(sc, pci_get_device(dev)); 490 else 491 error = iwn5000_attach(sc, pci_get_device(dev)); 492 if (error != 0) { 493 device_printf(dev, "could not attach device, error %d\n", 494 error); 495 goto fail; 496 } 497 498 /* 499 * Next, let's setup the various parameters of each NIC. 500 */ 501 error = iwn_config_specific(sc, pci_get_device(dev)); 502 if (error != 0) { 503 device_printf(dev, "could not attach device, error %d\n", 504 error); 505 goto fail; 506 } 507 508 if ((error = iwn_hw_prepare(sc)) != 0) { 509 device_printf(dev, "hardware not ready, error %d\n", error); 510 goto fail; 511 } 512 513 /* Allocate DMA memory for firmware transfers. */ 514 if ((error = iwn_alloc_fwmem(sc)) != 0) { 515 device_printf(dev, 516 "could not allocate memory for firmware, error %d\n", 517 error); 518 goto fail; 519 } 520 521 /* Allocate "Keep Warm" page. */ 522 if ((error = iwn_alloc_kw(sc)) != 0) { 523 device_printf(dev, 524 "could not allocate keep warm page, error %d\n", error); 525 goto fail; 526 } 527 528 /* Allocate ICT table for 5000 Series. */ 529 if (sc->hw_type != IWN_HW_REV_TYPE_4965 && 530 (error = iwn_alloc_ict(sc)) != 0) { 531 device_printf(dev, "could not allocate ICT table, error %d\n", 532 error); 533 goto fail; 534 } 535 536 /* Allocate TX scheduler "rings". */ 537 if ((error = iwn_alloc_sched(sc)) != 0) { 538 device_printf(dev, 539 "could not allocate TX scheduler rings, error %d\n", error); 540 goto fail; 541 } 542 543 /* Allocate TX rings (16 on 4965AGN, 20 on >=5000). */ 544 for (i = 0; i < sc->ntxqs; i++) { 545 if ((error = iwn_alloc_tx_ring(sc, &sc->txq[i], i)) != 0) { 546 device_printf(dev, 547 "could not allocate TX ring %d, error %d\n", i, 548 error); 549 goto fail; 550 } 551 } 552 553 /* Allocate RX ring. */ 554 if ((error = iwn_alloc_rx_ring(sc, &sc->rxq)) != 0) { 555 device_printf(dev, "could not allocate RX ring, error %d\n", 556 error); 557 goto fail; 558 } 559 560 /* Clear pending interrupts. */ 561 IWN_WRITE(sc, IWN_INT, 0xffffffff); 562 563 ic = &sc->sc_ic; 564 ic->ic_softc = sc; 565 ic->ic_name = device_get_nameunit(dev); 566 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 567 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 568 569 /* Set device capabilities. */ 570 ic->ic_caps = 571 IEEE80211_C_STA /* station mode supported */ 572 | IEEE80211_C_MONITOR /* monitor mode supported */ 573 #if 0 574 | IEEE80211_C_BGSCAN /* background scanning */ 575 #endif 576 | IEEE80211_C_TXPMGT /* tx power management */ 577 | IEEE80211_C_SHSLOT /* short slot time supported */ 578 | IEEE80211_C_WPA 579 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 580 #if 0 581 | IEEE80211_C_IBSS /* ibss/adhoc mode */ 582 #endif 583 | IEEE80211_C_WME /* WME */ 584 | IEEE80211_C_PMGT /* Station-side power mgmt */ 585 ; 586 587 /* Read MAC address, channels, etc from EEPROM. */ 588 if ((error = iwn_read_eeprom(sc, ic->ic_macaddr)) != 0) { 589 device_printf(dev, "could not read EEPROM, error %d\n", 590 error); 591 goto fail; 592 } 593 594 /* Count the number of available chains. */ 595 sc->ntxchains = 596 ((sc->txchainmask >> 2) & 1) + 597 ((sc->txchainmask >> 1) & 1) + 598 ((sc->txchainmask >> 0) & 1); 599 sc->nrxchains = 600 ((sc->rxchainmask >> 2) & 1) + 601 ((sc->rxchainmask >> 1) & 1) + 602 ((sc->rxchainmask >> 0) & 1); 603 if (bootverbose) { 604 device_printf(dev, "MIMO %dT%dR, %.4s, address %6D\n", 605 sc->ntxchains, sc->nrxchains, sc->eeprom_domain, 606 ic->ic_macaddr, ":"); 607 } 608 609 if (sc->sc_flags & IWN_FLAG_HAS_11N) { 610 ic->ic_rxstream = sc->nrxchains; 611 ic->ic_txstream = sc->ntxchains; 612 613 /* 614 * Some of the 3 antenna devices (ie, the 4965) only supports 615 * 2x2 operation. So correct the number of streams if 616 * it's not a 3-stream device. 617 */ 618 if (! iwn_is_3stream_device(sc)) { 619 if (ic->ic_rxstream > 2) 620 ic->ic_rxstream = 2; 621 if (ic->ic_txstream > 2) 622 ic->ic_txstream = 2; 623 } 624 625 ic->ic_htcaps = 626 IEEE80211_HTCAP_SMPS_OFF /* SMPS mode disabled */ 627 | IEEE80211_HTCAP_SHORTGI20 /* short GI in 20MHz */ 628 | IEEE80211_HTCAP_CHWIDTH40 /* 40MHz channel width*/ 629 | IEEE80211_HTCAP_SHORTGI40 /* short GI in 40MHz */ 630 #ifdef notyet 631 | IEEE80211_HTCAP_GREENFIELD 632 #if IWN_RBUF_SIZE == 8192 633 | IEEE80211_HTCAP_MAXAMSDU_7935 /* max A-MSDU length */ 634 #else 635 | IEEE80211_HTCAP_MAXAMSDU_3839 /* max A-MSDU length */ 636 #endif 637 #endif 638 /* s/w capabilities */ 639 | IEEE80211_HTC_HT /* HT operation */ 640 | IEEE80211_HTC_AMPDU /* tx A-MPDU */ 641 #ifdef notyet 642 | IEEE80211_HTC_AMSDU /* tx A-MSDU */ 643 #endif 644 ; 645 } 646 647 ieee80211_ifattach(ic); 648 ic->ic_vap_create = iwn_vap_create; 649 ic->ic_ioctl = iwn_ioctl; 650 ic->ic_parent = iwn_parent; 651 ic->ic_vap_delete = iwn_vap_delete; 652 ic->ic_transmit = iwn_transmit; 653 ic->ic_raw_xmit = iwn_raw_xmit; 654 ic->ic_node_alloc = iwn_node_alloc; 655 sc->sc_ampdu_rx_start = ic->ic_ampdu_rx_start; 656 ic->ic_ampdu_rx_start = iwn_ampdu_rx_start; 657 sc->sc_ampdu_rx_stop = ic->ic_ampdu_rx_stop; 658 ic->ic_ampdu_rx_stop = iwn_ampdu_rx_stop; 659 sc->sc_addba_request = ic->ic_addba_request; 660 ic->ic_addba_request = iwn_addba_request; 661 sc->sc_addba_response = ic->ic_addba_response; 662 ic->ic_addba_response = iwn_addba_response; 663 sc->sc_addba_stop = ic->ic_addba_stop; 664 ic->ic_addba_stop = iwn_ampdu_tx_stop; 665 ic->ic_newassoc = iwn_newassoc; 666 ic->ic_wme.wme_update = iwn_updateedca; 667 ic->ic_update_mcast = iwn_update_mcast; 668 ic->ic_scan_start = iwn_scan_start; 669 ic->ic_scan_end = iwn_scan_end; 670 ic->ic_set_channel = iwn_set_channel; 671 ic->ic_scan_curchan = iwn_scan_curchan; 672 ic->ic_scan_mindwell = iwn_scan_mindwell; 673 ic->ic_getradiocaps = iwn_getradiocaps; 674 ic->ic_setregdomain = iwn_setregdomain; 675 676 iwn_radiotap_attach(sc); 677 678 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 679 callout_init_mtx(&sc->scan_timeout, &sc->sc_mtx, 0); 680 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 681 TASK_INIT(&sc->sc_radioon_task, 0, iwn_radio_on, sc); 682 TASK_INIT(&sc->sc_radiooff_task, 0, iwn_radio_off, sc); 683 TASK_INIT(&sc->sc_panic_task, 0, iwn_panicked, sc); 684 TASK_INIT(&sc->sc_xmit_task, 0, iwn_xmit_task, sc); 685 686 mbufq_init(&sc->sc_xmit_queue, 1024); 687 688 sc->sc_tq = taskqueue_create("iwn_taskq", M_WAITOK, 689 taskqueue_thread_enqueue, &sc->sc_tq); 690 error = taskqueue_start_threads(&sc->sc_tq, 1, 0, "iwn_taskq"); 691 if (error != 0) { 692 device_printf(dev, "can't start threads, error %d\n", error); 693 goto fail; 694 } 695 696 iwn_sysctlattach(sc); 697 698 /* 699 * Hook our interrupt after all initialization is complete. 700 */ 701 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 702 NULL, iwn_intr, sc, &sc->sc_ih); 703 if (error != 0) { 704 device_printf(dev, "can't establish interrupt, error %d\n", 705 error); 706 goto fail; 707 } 708 709 #if 0 710 device_printf(sc->sc_dev, "%s: rx_stats=%d, rx_stats_bt=%d\n", 711 __func__, 712 sizeof(struct iwn_stats), 713 sizeof(struct iwn_stats_bt)); 714 #endif 715 716 if (bootverbose) 717 ieee80211_announce(ic); 718 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 719 720 /* Add debug ioctl right at the end */ 721 sc->sc_cdev = make_dev(&iwn_cdevsw, device_get_unit(dev), 722 UID_ROOT, GID_WHEEL, 0600, "%s", device_get_nameunit(dev)); 723 if (sc->sc_cdev == NULL) { 724 device_printf(dev, "failed to create debug character device\n"); 725 } else { 726 sc->sc_cdev->si_drv1 = sc; 727 } 728 return 0; 729 fail: 730 iwn_detach(dev); 731 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__); 732 return error; 733 } 734 735 /* 736 * Define specific configuration based on device id and subdevice id 737 * pid : PCI device id 738 */ 739 static int 740 iwn_config_specific(struct iwn_softc *sc, uint16_t pid) 741 { 742 743 switch (pid) { 744 /* 4965 series */ 745 case IWN_DID_4965_1: 746 case IWN_DID_4965_2: 747 case IWN_DID_4965_3: 748 case IWN_DID_4965_4: 749 sc->base_params = &iwn4965_base_params; 750 sc->limits = &iwn4965_sensitivity_limits; 751 sc->fwname = "iwn4965fw"; 752 /* Override chains masks, ROM is known to be broken. */ 753 sc->txchainmask = IWN_ANT_AB; 754 sc->rxchainmask = IWN_ANT_ABC; 755 /* Enable normal btcoex */ 756 sc->sc_flags |= IWN_FLAG_BTCOEX; 757 break; 758 /* 1000 Series */ 759 case IWN_DID_1000_1: 760 case IWN_DID_1000_2: 761 switch(sc->subdevice_id) { 762 case IWN_SDID_1000_1: 763 case IWN_SDID_1000_2: 764 case IWN_SDID_1000_3: 765 case IWN_SDID_1000_4: 766 case IWN_SDID_1000_5: 767 case IWN_SDID_1000_6: 768 case IWN_SDID_1000_7: 769 case IWN_SDID_1000_8: 770 case IWN_SDID_1000_9: 771 case IWN_SDID_1000_10: 772 case IWN_SDID_1000_11: 773 case IWN_SDID_1000_12: 774 sc->limits = &iwn1000_sensitivity_limits; 775 sc->base_params = &iwn1000_base_params; 776 sc->fwname = "iwn1000fw"; 777 break; 778 default: 779 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 780 "0x%04x rev %d not supported (subdevice)\n", pid, 781 sc->subdevice_id,sc->hw_type); 782 return ENOTSUP; 783 } 784 break; 785 /* 6x00 Series */ 786 case IWN_DID_6x00_2: 787 case IWN_DID_6x00_4: 788 case IWN_DID_6x00_1: 789 case IWN_DID_6x00_3: 790 sc->fwname = "iwn6000fw"; 791 sc->limits = &iwn6000_sensitivity_limits; 792 switch(sc->subdevice_id) { 793 case IWN_SDID_6x00_1: 794 case IWN_SDID_6x00_2: 795 case IWN_SDID_6x00_8: 796 //iwl6000_3agn_cfg 797 sc->base_params = &iwn_6000_base_params; 798 break; 799 case IWN_SDID_6x00_3: 800 case IWN_SDID_6x00_6: 801 case IWN_SDID_6x00_9: 802 ////iwl6000i_2agn 803 case IWN_SDID_6x00_4: 804 case IWN_SDID_6x00_7: 805 case IWN_SDID_6x00_10: 806 //iwl6000i_2abg_cfg 807 case IWN_SDID_6x00_5: 808 //iwl6000i_2bg_cfg 809 sc->base_params = &iwn_6000i_base_params; 810 sc->sc_flags |= IWN_FLAG_INTERNAL_PA; 811 sc->txchainmask = IWN_ANT_BC; 812 sc->rxchainmask = IWN_ANT_BC; 813 break; 814 default: 815 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 816 "0x%04x rev %d not supported (subdevice)\n", pid, 817 sc->subdevice_id,sc->hw_type); 818 return ENOTSUP; 819 } 820 break; 821 /* 6x05 Series */ 822 case IWN_DID_6x05_1: 823 case IWN_DID_6x05_2: 824 switch(sc->subdevice_id) { 825 case IWN_SDID_6x05_1: 826 case IWN_SDID_6x05_4: 827 case IWN_SDID_6x05_6: 828 //iwl6005_2agn_cfg 829 case IWN_SDID_6x05_2: 830 case IWN_SDID_6x05_5: 831 case IWN_SDID_6x05_7: 832 //iwl6005_2abg_cfg 833 case IWN_SDID_6x05_3: 834 //iwl6005_2bg_cfg 835 case IWN_SDID_6x05_8: 836 case IWN_SDID_6x05_9: 837 //iwl6005_2agn_sff_cfg 838 case IWN_SDID_6x05_10: 839 //iwl6005_2agn_d_cfg 840 case IWN_SDID_6x05_11: 841 //iwl6005_2agn_mow1_cfg 842 case IWN_SDID_6x05_12: 843 //iwl6005_2agn_mow2_cfg 844 sc->fwname = "iwn6000g2afw"; 845 sc->limits = &iwn6000_sensitivity_limits; 846 sc->base_params = &iwn_6000g2_base_params; 847 break; 848 default: 849 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 850 "0x%04x rev %d not supported (subdevice)\n", pid, 851 sc->subdevice_id,sc->hw_type); 852 return ENOTSUP; 853 } 854 break; 855 /* 6x35 Series */ 856 case IWN_DID_6035_1: 857 case IWN_DID_6035_2: 858 switch(sc->subdevice_id) { 859 case IWN_SDID_6035_1: 860 case IWN_SDID_6035_2: 861 case IWN_SDID_6035_3: 862 case IWN_SDID_6035_4: 863 sc->fwname = "iwn6000g2bfw"; 864 sc->limits = &iwn6235_sensitivity_limits; 865 sc->base_params = &iwn_6235_base_params; 866 break; 867 default: 868 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 869 "0x%04x rev %d not supported (subdevice)\n", pid, 870 sc->subdevice_id,sc->hw_type); 871 return ENOTSUP; 872 } 873 break; 874 /* 6x50 WiFi/WiMax Series */ 875 case IWN_DID_6050_1: 876 case IWN_DID_6050_2: 877 switch(sc->subdevice_id) { 878 case IWN_SDID_6050_1: 879 case IWN_SDID_6050_3: 880 case IWN_SDID_6050_5: 881 //iwl6050_2agn_cfg 882 case IWN_SDID_6050_2: 883 case IWN_SDID_6050_4: 884 case IWN_SDID_6050_6: 885 //iwl6050_2abg_cfg 886 sc->fwname = "iwn6050fw"; 887 sc->txchainmask = IWN_ANT_AB; 888 sc->rxchainmask = IWN_ANT_AB; 889 sc->limits = &iwn6000_sensitivity_limits; 890 sc->base_params = &iwn_6050_base_params; 891 break; 892 default: 893 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 894 "0x%04x rev %d not supported (subdevice)\n", pid, 895 sc->subdevice_id,sc->hw_type); 896 return ENOTSUP; 897 } 898 break; 899 /* 6150 WiFi/WiMax Series */ 900 case IWN_DID_6150_1: 901 case IWN_DID_6150_2: 902 switch(sc->subdevice_id) { 903 case IWN_SDID_6150_1: 904 case IWN_SDID_6150_3: 905 case IWN_SDID_6150_5: 906 // iwl6150_bgn_cfg 907 case IWN_SDID_6150_2: 908 case IWN_SDID_6150_4: 909 case IWN_SDID_6150_6: 910 //iwl6150_bg_cfg 911 sc->fwname = "iwn6050fw"; 912 sc->limits = &iwn6000_sensitivity_limits; 913 sc->base_params = &iwn_6150_base_params; 914 break; 915 default: 916 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 917 "0x%04x rev %d not supported (subdevice)\n", pid, 918 sc->subdevice_id,sc->hw_type); 919 return ENOTSUP; 920 } 921 break; 922 /* 6030 Series and 1030 Series */ 923 case IWN_DID_x030_1: 924 case IWN_DID_x030_2: 925 case IWN_DID_x030_3: 926 case IWN_DID_x030_4: 927 switch(sc->subdevice_id) { 928 case IWN_SDID_x030_1: 929 case IWN_SDID_x030_3: 930 case IWN_SDID_x030_5: 931 // iwl1030_bgn_cfg 932 case IWN_SDID_x030_2: 933 case IWN_SDID_x030_4: 934 case IWN_SDID_x030_6: 935 //iwl1030_bg_cfg 936 case IWN_SDID_x030_7: 937 case IWN_SDID_x030_10: 938 case IWN_SDID_x030_14: 939 //iwl6030_2agn_cfg 940 case IWN_SDID_x030_8: 941 case IWN_SDID_x030_11: 942 case IWN_SDID_x030_15: 943 // iwl6030_2bgn_cfg 944 case IWN_SDID_x030_9: 945 case IWN_SDID_x030_12: 946 case IWN_SDID_x030_16: 947 // iwl6030_2abg_cfg 948 case IWN_SDID_x030_13: 949 //iwl6030_2bg_cfg 950 sc->fwname = "iwn6000g2bfw"; 951 sc->limits = &iwn6000_sensitivity_limits; 952 sc->base_params = &iwn_6000g2b_base_params; 953 break; 954 default: 955 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 956 "0x%04x rev %d not supported (subdevice)\n", pid, 957 sc->subdevice_id,sc->hw_type); 958 return ENOTSUP; 959 } 960 break; 961 /* 130 Series WiFi */ 962 /* XXX: This series will need adjustment for rate. 963 * see rx_with_siso_diversity in linux kernel 964 */ 965 case IWN_DID_130_1: 966 case IWN_DID_130_2: 967 switch(sc->subdevice_id) { 968 case IWN_SDID_130_1: 969 case IWN_SDID_130_3: 970 case IWN_SDID_130_5: 971 //iwl130_bgn_cfg 972 case IWN_SDID_130_2: 973 case IWN_SDID_130_4: 974 case IWN_SDID_130_6: 975 //iwl130_bg_cfg 976 sc->fwname = "iwn6000g2bfw"; 977 sc->limits = &iwn6000_sensitivity_limits; 978 sc->base_params = &iwn_6000g2b_base_params; 979 break; 980 default: 981 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 982 "0x%04x rev %d not supported (subdevice)\n", pid, 983 sc->subdevice_id,sc->hw_type); 984 return ENOTSUP; 985 } 986 break; 987 /* 100 Series WiFi */ 988 case IWN_DID_100_1: 989 case IWN_DID_100_2: 990 switch(sc->subdevice_id) { 991 case IWN_SDID_100_1: 992 case IWN_SDID_100_2: 993 case IWN_SDID_100_3: 994 case IWN_SDID_100_4: 995 case IWN_SDID_100_5: 996 case IWN_SDID_100_6: 997 sc->limits = &iwn1000_sensitivity_limits; 998 sc->base_params = &iwn1000_base_params; 999 sc->fwname = "iwn100fw"; 1000 break; 1001 default: 1002 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 1003 "0x%04x rev %d not supported (subdevice)\n", pid, 1004 sc->subdevice_id,sc->hw_type); 1005 return ENOTSUP; 1006 } 1007 break; 1008 1009 /* 105 Series */ 1010 /* XXX: This series will need adjustment for rate. 1011 * see rx_with_siso_diversity in linux kernel 1012 */ 1013 case IWN_DID_105_1: 1014 case IWN_DID_105_2: 1015 switch(sc->subdevice_id) { 1016 case IWN_SDID_105_1: 1017 case IWN_SDID_105_2: 1018 case IWN_SDID_105_3: 1019 //iwl105_bgn_cfg 1020 case IWN_SDID_105_4: 1021 //iwl105_bgn_d_cfg 1022 sc->limits = &iwn2030_sensitivity_limits; 1023 sc->base_params = &iwn2000_base_params; 1024 sc->fwname = "iwn105fw"; 1025 break; 1026 default: 1027 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 1028 "0x%04x rev %d not supported (subdevice)\n", pid, 1029 sc->subdevice_id,sc->hw_type); 1030 return ENOTSUP; 1031 } 1032 break; 1033 1034 /* 135 Series */ 1035 /* XXX: This series will need adjustment for rate. 1036 * see rx_with_siso_diversity in linux kernel 1037 */ 1038 case IWN_DID_135_1: 1039 case IWN_DID_135_2: 1040 switch(sc->subdevice_id) { 1041 case IWN_SDID_135_1: 1042 case IWN_SDID_135_2: 1043 case IWN_SDID_135_3: 1044 sc->limits = &iwn2030_sensitivity_limits; 1045 sc->base_params = &iwn2030_base_params; 1046 sc->fwname = "iwn135fw"; 1047 break; 1048 default: 1049 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 1050 "0x%04x rev %d not supported (subdevice)\n", pid, 1051 sc->subdevice_id,sc->hw_type); 1052 return ENOTSUP; 1053 } 1054 break; 1055 1056 /* 2x00 Series */ 1057 case IWN_DID_2x00_1: 1058 case IWN_DID_2x00_2: 1059 switch(sc->subdevice_id) { 1060 case IWN_SDID_2x00_1: 1061 case IWN_SDID_2x00_2: 1062 case IWN_SDID_2x00_3: 1063 //iwl2000_2bgn_cfg 1064 case IWN_SDID_2x00_4: 1065 //iwl2000_2bgn_d_cfg 1066 sc->limits = &iwn2030_sensitivity_limits; 1067 sc->base_params = &iwn2000_base_params; 1068 sc->fwname = "iwn2000fw"; 1069 break; 1070 default: 1071 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 1072 "0x%04x rev %d not supported (subdevice) \n", 1073 pid, sc->subdevice_id, sc->hw_type); 1074 return ENOTSUP; 1075 } 1076 break; 1077 /* 2x30 Series */ 1078 case IWN_DID_2x30_1: 1079 case IWN_DID_2x30_2: 1080 switch(sc->subdevice_id) { 1081 case IWN_SDID_2x30_1: 1082 case IWN_SDID_2x30_3: 1083 case IWN_SDID_2x30_5: 1084 //iwl100_bgn_cfg 1085 case IWN_SDID_2x30_2: 1086 case IWN_SDID_2x30_4: 1087 case IWN_SDID_2x30_6: 1088 //iwl100_bg_cfg 1089 sc->limits = &iwn2030_sensitivity_limits; 1090 sc->base_params = &iwn2030_base_params; 1091 sc->fwname = "iwn2030fw"; 1092 break; 1093 default: 1094 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 1095 "0x%04x rev %d not supported (subdevice)\n", pid, 1096 sc->subdevice_id,sc->hw_type); 1097 return ENOTSUP; 1098 } 1099 break; 1100 /* 5x00 Series */ 1101 case IWN_DID_5x00_1: 1102 case IWN_DID_5x00_2: 1103 case IWN_DID_5x00_3: 1104 case IWN_DID_5x00_4: 1105 sc->limits = &iwn5000_sensitivity_limits; 1106 sc->base_params = &iwn5000_base_params; 1107 sc->fwname = "iwn5000fw"; 1108 switch(sc->subdevice_id) { 1109 case IWN_SDID_5x00_1: 1110 case IWN_SDID_5x00_2: 1111 case IWN_SDID_5x00_3: 1112 case IWN_SDID_5x00_4: 1113 case IWN_SDID_5x00_9: 1114 case IWN_SDID_5x00_10: 1115 case IWN_SDID_5x00_11: 1116 case IWN_SDID_5x00_12: 1117 case IWN_SDID_5x00_17: 1118 case IWN_SDID_5x00_18: 1119 case IWN_SDID_5x00_19: 1120 case IWN_SDID_5x00_20: 1121 //iwl5100_agn_cfg 1122 sc->txchainmask = IWN_ANT_B; 1123 sc->rxchainmask = IWN_ANT_AB; 1124 break; 1125 case IWN_SDID_5x00_5: 1126 case IWN_SDID_5x00_6: 1127 case IWN_SDID_5x00_13: 1128 case IWN_SDID_5x00_14: 1129 case IWN_SDID_5x00_21: 1130 case IWN_SDID_5x00_22: 1131 //iwl5100_bgn_cfg 1132 sc->txchainmask = IWN_ANT_B; 1133 sc->rxchainmask = IWN_ANT_AB; 1134 break; 1135 case IWN_SDID_5x00_7: 1136 case IWN_SDID_5x00_8: 1137 case IWN_SDID_5x00_15: 1138 case IWN_SDID_5x00_16: 1139 case IWN_SDID_5x00_23: 1140 case IWN_SDID_5x00_24: 1141 //iwl5100_abg_cfg 1142 sc->txchainmask = IWN_ANT_B; 1143 sc->rxchainmask = IWN_ANT_AB; 1144 break; 1145 case IWN_SDID_5x00_25: 1146 case IWN_SDID_5x00_26: 1147 case IWN_SDID_5x00_27: 1148 case IWN_SDID_5x00_28: 1149 case IWN_SDID_5x00_29: 1150 case IWN_SDID_5x00_30: 1151 case IWN_SDID_5x00_31: 1152 case IWN_SDID_5x00_32: 1153 case IWN_SDID_5x00_33: 1154 case IWN_SDID_5x00_34: 1155 case IWN_SDID_5x00_35: 1156 case IWN_SDID_5x00_36: 1157 //iwl5300_agn_cfg 1158 sc->txchainmask = IWN_ANT_ABC; 1159 sc->rxchainmask = IWN_ANT_ABC; 1160 break; 1161 default: 1162 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 1163 "0x%04x rev %d not supported (subdevice)\n", pid, 1164 sc->subdevice_id,sc->hw_type); 1165 return ENOTSUP; 1166 } 1167 break; 1168 /* 5x50 Series */ 1169 case IWN_DID_5x50_1: 1170 case IWN_DID_5x50_2: 1171 case IWN_DID_5x50_3: 1172 case IWN_DID_5x50_4: 1173 sc->limits = &iwn5000_sensitivity_limits; 1174 sc->base_params = &iwn5000_base_params; 1175 sc->fwname = "iwn5000fw"; 1176 switch(sc->subdevice_id) { 1177 case IWN_SDID_5x50_1: 1178 case IWN_SDID_5x50_2: 1179 case IWN_SDID_5x50_3: 1180 //iwl5350_agn_cfg 1181 sc->limits = &iwn5000_sensitivity_limits; 1182 sc->base_params = &iwn5000_base_params; 1183 sc->fwname = "iwn5000fw"; 1184 break; 1185 case IWN_SDID_5x50_4: 1186 case IWN_SDID_5x50_5: 1187 case IWN_SDID_5x50_8: 1188 case IWN_SDID_5x50_9: 1189 case IWN_SDID_5x50_10: 1190 case IWN_SDID_5x50_11: 1191 //iwl5150_agn_cfg 1192 case IWN_SDID_5x50_6: 1193 case IWN_SDID_5x50_7: 1194 case IWN_SDID_5x50_12: 1195 case IWN_SDID_5x50_13: 1196 //iwl5150_abg_cfg 1197 sc->limits = &iwn5000_sensitivity_limits; 1198 sc->fwname = "iwn5150fw"; 1199 sc->base_params = &iwn_5x50_base_params; 1200 break; 1201 default: 1202 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id :" 1203 "0x%04x rev %d not supported (subdevice)\n", pid, 1204 sc->subdevice_id,sc->hw_type); 1205 return ENOTSUP; 1206 } 1207 break; 1208 default: 1209 device_printf(sc->sc_dev, "adapter type id : 0x%04x sub id : 0x%04x" 1210 "rev 0x%08x not supported (device)\n", pid, sc->subdevice_id, 1211 sc->hw_type); 1212 return ENOTSUP; 1213 } 1214 return 0; 1215 } 1216 1217 static int 1218 iwn4965_attach(struct iwn_softc *sc, uint16_t pid) 1219 { 1220 struct iwn_ops *ops = &sc->ops; 1221 1222 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1223 ops->load_firmware = iwn4965_load_firmware; 1224 ops->read_eeprom = iwn4965_read_eeprom; 1225 ops->post_alive = iwn4965_post_alive; 1226 ops->nic_config = iwn4965_nic_config; 1227 ops->update_sched = iwn4965_update_sched; 1228 ops->get_temperature = iwn4965_get_temperature; 1229 ops->get_rssi = iwn4965_get_rssi; 1230 ops->set_txpower = iwn4965_set_txpower; 1231 ops->init_gains = iwn4965_init_gains; 1232 ops->set_gains = iwn4965_set_gains; 1233 ops->add_node = iwn4965_add_node; 1234 ops->tx_done = iwn4965_tx_done; 1235 ops->ampdu_tx_start = iwn4965_ampdu_tx_start; 1236 ops->ampdu_tx_stop = iwn4965_ampdu_tx_stop; 1237 sc->ntxqs = IWN4965_NTXQUEUES; 1238 sc->firstaggqueue = IWN4965_FIRSTAGGQUEUE; 1239 sc->ndmachnls = IWN4965_NDMACHNLS; 1240 sc->broadcast_id = IWN4965_ID_BROADCAST; 1241 sc->rxonsz = IWN4965_RXONSZ; 1242 sc->schedsz = IWN4965_SCHEDSZ; 1243 sc->fw_text_maxsz = IWN4965_FW_TEXT_MAXSZ; 1244 sc->fw_data_maxsz = IWN4965_FW_DATA_MAXSZ; 1245 sc->fwsz = IWN4965_FWSZ; 1246 sc->sched_txfact_addr = IWN4965_SCHED_TXFACT; 1247 sc->limits = &iwn4965_sensitivity_limits; 1248 sc->fwname = "iwn4965fw"; 1249 /* Override chains masks, ROM is known to be broken. */ 1250 sc->txchainmask = IWN_ANT_AB; 1251 sc->rxchainmask = IWN_ANT_ABC; 1252 /* Enable normal btcoex */ 1253 sc->sc_flags |= IWN_FLAG_BTCOEX; 1254 1255 DPRINTF(sc, IWN_DEBUG_TRACE, "%s: end\n",__func__); 1256 1257 return 0; 1258 } 1259 1260 static int 1261 iwn5000_attach(struct iwn_softc *sc, uint16_t pid) 1262 { 1263 struct iwn_ops *ops = &sc->ops; 1264 1265 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1266 1267 ops->load_firmware = iwn5000_load_firmware; 1268 ops->read_eeprom = iwn5000_read_eeprom; 1269 ops->post_alive = iwn5000_post_alive; 1270 ops->nic_config = iwn5000_nic_config; 1271 ops->update_sched = iwn5000_update_sched; 1272 ops->get_temperature = iwn5000_get_temperature; 1273 ops->get_rssi = iwn5000_get_rssi; 1274 ops->set_txpower = iwn5000_set_txpower; 1275 ops->init_gains = iwn5000_init_gains; 1276 ops->set_gains = iwn5000_set_gains; 1277 ops->add_node = iwn5000_add_node; 1278 ops->tx_done = iwn5000_tx_done; 1279 ops->ampdu_tx_start = iwn5000_ampdu_tx_start; 1280 ops->ampdu_tx_stop = iwn5000_ampdu_tx_stop; 1281 sc->ntxqs = IWN5000_NTXQUEUES; 1282 sc->firstaggqueue = IWN5000_FIRSTAGGQUEUE; 1283 sc->ndmachnls = IWN5000_NDMACHNLS; 1284 sc->broadcast_id = IWN5000_ID_BROADCAST; 1285 sc->rxonsz = IWN5000_RXONSZ; 1286 sc->schedsz = IWN5000_SCHEDSZ; 1287 sc->fw_text_maxsz = IWN5000_FW_TEXT_MAXSZ; 1288 sc->fw_data_maxsz = IWN5000_FW_DATA_MAXSZ; 1289 sc->fwsz = IWN5000_FWSZ; 1290 sc->sched_txfact_addr = IWN5000_SCHED_TXFACT; 1291 sc->reset_noise_gain = IWN5000_PHY_CALIB_RESET_NOISE_GAIN; 1292 sc->noise_gain = IWN5000_PHY_CALIB_NOISE_GAIN; 1293 1294 return 0; 1295 } 1296 1297 /* 1298 * Attach the interface to 802.11 radiotap. 1299 */ 1300 static void 1301 iwn_radiotap_attach(struct iwn_softc *sc) 1302 { 1303 1304 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1305 ieee80211_radiotap_attach(&sc->sc_ic, 1306 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 1307 IWN_TX_RADIOTAP_PRESENT, 1308 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 1309 IWN_RX_RADIOTAP_PRESENT); 1310 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 1311 } 1312 1313 static void 1314 iwn_sysctlattach(struct iwn_softc *sc) 1315 { 1316 #ifdef IWN_DEBUG 1317 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 1318 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 1319 1320 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 1321 "debug", CTLFLAG_RW, &sc->sc_debug, sc->sc_debug, 1322 "control debugging printfs"); 1323 #endif 1324 } 1325 1326 static struct ieee80211vap * 1327 iwn_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 1328 enum ieee80211_opmode opmode, int flags, 1329 const uint8_t bssid[IEEE80211_ADDR_LEN], 1330 const uint8_t mac[IEEE80211_ADDR_LEN]) 1331 { 1332 struct iwn_softc *sc = ic->ic_softc; 1333 struct iwn_vap *ivp; 1334 struct ieee80211vap *vap; 1335 1336 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 1337 return NULL; 1338 1339 ivp = malloc(sizeof(struct iwn_vap), M_80211_VAP, M_WAITOK | M_ZERO); 1340 vap = &ivp->iv_vap; 1341 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 1342 ivp->ctx = IWN_RXON_BSS_CTX; 1343 vap->iv_bmissthreshold = 10; /* override default */ 1344 /* Override with driver methods. */ 1345 ivp->iv_newstate = vap->iv_newstate; 1346 vap->iv_newstate = iwn_newstate; 1347 sc->ivap[IWN_RXON_BSS_CTX] = vap; 1348 1349 ieee80211_ratectl_init(vap); 1350 /* Complete setup. */ 1351 ieee80211_vap_attach(vap, iwn_media_change, ieee80211_media_status, 1352 mac); 1353 ic->ic_opmode = opmode; 1354 return vap; 1355 } 1356 1357 static void 1358 iwn_vap_delete(struct ieee80211vap *vap) 1359 { 1360 struct iwn_vap *ivp = IWN_VAP(vap); 1361 1362 ieee80211_ratectl_deinit(vap); 1363 ieee80211_vap_detach(vap); 1364 free(ivp, M_80211_VAP); 1365 } 1366 1367 static void 1368 iwn_xmit_queue_drain(struct iwn_softc *sc) 1369 { 1370 struct mbuf *m; 1371 struct ieee80211_node *ni; 1372 1373 IWN_LOCK_ASSERT(sc); 1374 while ((m = mbufq_dequeue(&sc->sc_xmit_queue)) != NULL) { 1375 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 1376 ieee80211_free_node(ni); 1377 m_freem(m); 1378 } 1379 } 1380 1381 static int 1382 iwn_xmit_queue_enqueue(struct iwn_softc *sc, struct mbuf *m) 1383 { 1384 1385 IWN_LOCK_ASSERT(sc); 1386 return (mbufq_enqueue(&sc->sc_xmit_queue, m)); 1387 } 1388 1389 static int 1390 iwn_detach(device_t dev) 1391 { 1392 struct iwn_softc *sc = device_get_softc(dev); 1393 int qid; 1394 1395 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1396 1397 if (sc->sc_ic.ic_softc != NULL) { 1398 /* Free the mbuf queue and node references */ 1399 IWN_LOCK(sc); 1400 iwn_xmit_queue_drain(sc); 1401 IWN_UNLOCK(sc); 1402 1403 ieee80211_draintask(&sc->sc_ic, &sc->sc_radioon_task); 1404 ieee80211_draintask(&sc->sc_ic, &sc->sc_radiooff_task); 1405 iwn_stop(sc); 1406 1407 taskqueue_drain_all(sc->sc_tq); 1408 taskqueue_free(sc->sc_tq); 1409 1410 callout_drain(&sc->watchdog_to); 1411 callout_drain(&sc->scan_timeout); 1412 callout_drain(&sc->calib_to); 1413 ieee80211_ifdetach(&sc->sc_ic); 1414 } 1415 1416 /* Uninstall interrupt handler. */ 1417 if (sc->irq != NULL) { 1418 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 1419 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 1420 sc->irq); 1421 pci_release_msi(dev); 1422 } 1423 1424 /* Free DMA resources. */ 1425 iwn_free_rx_ring(sc, &sc->rxq); 1426 for (qid = 0; qid < sc->ntxqs; qid++) 1427 iwn_free_tx_ring(sc, &sc->txq[qid]); 1428 iwn_free_sched(sc); 1429 iwn_free_kw(sc); 1430 if (sc->ict != NULL) 1431 iwn_free_ict(sc); 1432 iwn_free_fwmem(sc); 1433 1434 if (sc->mem != NULL) 1435 bus_release_resource(dev, SYS_RES_MEMORY, 1436 rman_get_rid(sc->mem), sc->mem); 1437 1438 if (sc->sc_cdev) { 1439 destroy_dev(sc->sc_cdev); 1440 sc->sc_cdev = NULL; 1441 } 1442 1443 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n", __func__); 1444 IWN_LOCK_DESTROY(sc); 1445 return 0; 1446 } 1447 1448 static int 1449 iwn_shutdown(device_t dev) 1450 { 1451 struct iwn_softc *sc = device_get_softc(dev); 1452 1453 iwn_stop(sc); 1454 return 0; 1455 } 1456 1457 static int 1458 iwn_suspend(device_t dev) 1459 { 1460 struct iwn_softc *sc = device_get_softc(dev); 1461 1462 ieee80211_suspend_all(&sc->sc_ic); 1463 return 0; 1464 } 1465 1466 static int 1467 iwn_resume(device_t dev) 1468 { 1469 struct iwn_softc *sc = device_get_softc(dev); 1470 1471 /* Clear device-specific "PCI retry timeout" register (41h). */ 1472 pci_write_config(dev, 0x41, 0, 1); 1473 1474 ieee80211_resume_all(&sc->sc_ic); 1475 return 0; 1476 } 1477 1478 static int 1479 iwn_nic_lock(struct iwn_softc *sc) 1480 { 1481 int ntries; 1482 1483 /* Request exclusive access to NIC. */ 1484 IWN_SETBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ); 1485 1486 /* Spin until we actually get the lock. */ 1487 for (ntries = 0; ntries < 1000; ntries++) { 1488 if ((IWN_READ(sc, IWN_GP_CNTRL) & 1489 (IWN_GP_CNTRL_MAC_ACCESS_ENA | IWN_GP_CNTRL_SLEEP)) == 1490 IWN_GP_CNTRL_MAC_ACCESS_ENA) 1491 return 0; 1492 DELAY(10); 1493 } 1494 return ETIMEDOUT; 1495 } 1496 1497 static __inline void 1498 iwn_nic_unlock(struct iwn_softc *sc) 1499 { 1500 IWN_CLRBITS(sc, IWN_GP_CNTRL, IWN_GP_CNTRL_MAC_ACCESS_REQ); 1501 } 1502 1503 static __inline uint32_t 1504 iwn_prph_read(struct iwn_softc *sc, uint32_t addr) 1505 { 1506 IWN_WRITE(sc, IWN_PRPH_RADDR, IWN_PRPH_DWORD | addr); 1507 IWN_BARRIER_READ_WRITE(sc); 1508 return IWN_READ(sc, IWN_PRPH_RDATA); 1509 } 1510 1511 static __inline void 1512 iwn_prph_write(struct iwn_softc *sc, uint32_t addr, uint32_t data) 1513 { 1514 IWN_WRITE(sc, IWN_PRPH_WADDR, IWN_PRPH_DWORD | addr); 1515 IWN_BARRIER_WRITE(sc); 1516 IWN_WRITE(sc, IWN_PRPH_WDATA, data); 1517 } 1518 1519 static __inline void 1520 iwn_prph_setbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask) 1521 { 1522 iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) | mask); 1523 } 1524 1525 static __inline void 1526 iwn_prph_clrbits(struct iwn_softc *sc, uint32_t addr, uint32_t mask) 1527 { 1528 iwn_prph_write(sc, addr, iwn_prph_read(sc, addr) & ~mask); 1529 } 1530 1531 static __inline void 1532 iwn_prph_write_region_4(struct iwn_softc *sc, uint32_t addr, 1533 const uint32_t *data, int count) 1534 { 1535 for (; count > 0; count--, data++, addr += 4) 1536 iwn_prph_write(sc, addr, *data); 1537 } 1538 1539 static __inline uint32_t 1540 iwn_mem_read(struct iwn_softc *sc, uint32_t addr) 1541 { 1542 IWN_WRITE(sc, IWN_MEM_RADDR, addr); 1543 IWN_BARRIER_READ_WRITE(sc); 1544 return IWN_READ(sc, IWN_MEM_RDATA); 1545 } 1546 1547 static __inline void 1548 iwn_mem_write(struct iwn_softc *sc, uint32_t addr, uint32_t data) 1549 { 1550 IWN_WRITE(sc, IWN_MEM_WADDR, addr); 1551 IWN_BARRIER_WRITE(sc); 1552 IWN_WRITE(sc, IWN_MEM_WDATA, data); 1553 } 1554 1555 static __inline void 1556 iwn_mem_write_2(struct iwn_softc *sc, uint32_t addr, uint16_t data) 1557 { 1558 uint32_t tmp; 1559 1560 tmp = iwn_mem_read(sc, addr & ~3); 1561 if (addr & 3) 1562 tmp = (tmp & 0x0000ffff) | data << 16; 1563 else 1564 tmp = (tmp & 0xffff0000) | data; 1565 iwn_mem_write(sc, addr & ~3, tmp); 1566 } 1567 1568 static __inline void 1569 iwn_mem_read_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t *data, 1570 int count) 1571 { 1572 for (; count > 0; count--, addr += 4) 1573 *data++ = iwn_mem_read(sc, addr); 1574 } 1575 1576 static __inline void 1577 iwn_mem_set_region_4(struct iwn_softc *sc, uint32_t addr, uint32_t val, 1578 int count) 1579 { 1580 for (; count > 0; count--, addr += 4) 1581 iwn_mem_write(sc, addr, val); 1582 } 1583 1584 static int 1585 iwn_eeprom_lock(struct iwn_softc *sc) 1586 { 1587 int i, ntries; 1588 1589 for (i = 0; i < 100; i++) { 1590 /* Request exclusive access to EEPROM. */ 1591 IWN_SETBITS(sc, IWN_HW_IF_CONFIG, 1592 IWN_HW_IF_CONFIG_EEPROM_LOCKED); 1593 1594 /* Spin until we actually get the lock. */ 1595 for (ntries = 0; ntries < 100; ntries++) { 1596 if (IWN_READ(sc, IWN_HW_IF_CONFIG) & 1597 IWN_HW_IF_CONFIG_EEPROM_LOCKED) 1598 return 0; 1599 DELAY(10); 1600 } 1601 } 1602 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end timeout\n", __func__); 1603 return ETIMEDOUT; 1604 } 1605 1606 static __inline void 1607 iwn_eeprom_unlock(struct iwn_softc *sc) 1608 { 1609 IWN_CLRBITS(sc, IWN_HW_IF_CONFIG, IWN_HW_IF_CONFIG_EEPROM_LOCKED); 1610 } 1611 1612 /* 1613 * Initialize access by host to One Time Programmable ROM. 1614 * NB: This kind of ROM can be found on 1000 or 6000 Series only. 1615 */ 1616 static int 1617 iwn_init_otprom(struct iwn_softc *sc) 1618 { 1619 uint16_t prev, base, next; 1620 int count, error; 1621 1622 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1623 1624 /* Wait for clock stabilization before accessing prph. */ 1625 if ((error = iwn_clock_wait(sc)) != 0) 1626 return error; 1627 1628 if ((error = iwn_nic_lock(sc)) != 0) 1629 return error; 1630 iwn_prph_setbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ); 1631 DELAY(5); 1632 iwn_prph_clrbits(sc, IWN_APMG_PS, IWN_APMG_PS_RESET_REQ); 1633 iwn_nic_unlock(sc); 1634 1635 /* Set auto clock gate disable bit for HW with OTP shadow RAM. */ 1636 if (sc->base_params->shadow_ram_support) { 1637 IWN_SETBITS(sc, IWN_DBG_LINK_PWR_MGMT, 1638 IWN_RESET_LINK_PWR_MGMT_DIS); 1639 } 1640 IWN_CLRBITS(sc, IWN_EEPROM_GP, IWN_EEPROM_GP_IF_OWNER); 1641 /* Clear ECC status. */ 1642 IWN_SETBITS(sc, IWN_OTP_GP, 1643 IWN_OTP_GP_ECC_CORR_STTS | IWN_OTP_GP_ECC_UNCORR_STTS); 1644 1645 /* 1646 * Find the block before last block (contains the EEPROM image) 1647 * for HW without OTP shadow RAM. 1648 */ 1649 if (! sc->base_params->shadow_ram_support) { 1650 /* Switch to absolute addressing mode. */ 1651 IWN_CLRBITS(sc, IWN_OTP_GP, IWN_OTP_GP_RELATIVE_ACCESS); 1652 base = prev = 0; 1653 for (count = 0; count < sc->base_params->max_ll_items; 1654 count++) { 1655 error = iwn_read_prom_data(sc, base, &next, 2); 1656 if (error != 0) 1657 return error; 1658 if (next == 0) /* End of linked-list. */ 1659 break; 1660 prev = base; 1661 base = le16toh(next); 1662 } 1663 if (count == 0 || count == sc->base_params->max_ll_items) 1664 return EIO; 1665 /* Skip "next" word. */ 1666 sc->prom_base = prev + 1; 1667 } 1668 1669 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 1670 1671 return 0; 1672 } 1673 1674 static int 1675 iwn_read_prom_data(struct iwn_softc *sc, uint32_t addr, void *data, int count) 1676 { 1677 uint8_t *out = data; 1678 uint32_t val, tmp; 1679 int ntries; 1680 1681 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1682 1683 addr += sc->prom_base; 1684 for (; count > 0; count -= 2, addr++) { 1685 IWN_WRITE(sc, IWN_EEPROM, addr << 2); 1686 for (ntries = 0; ntries < 10; ntries++) { 1687 val = IWN_READ(sc, IWN_EEPROM); 1688 if (val & IWN_EEPROM_READ_VALID) 1689 break; 1690 DELAY(5); 1691 } 1692 if (ntries == 10) { 1693 device_printf(sc->sc_dev, 1694 "timeout reading ROM at 0x%x\n", addr); 1695 return ETIMEDOUT; 1696 } 1697 if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) { 1698 /* OTPROM, check for ECC errors. */ 1699 tmp = IWN_READ(sc, IWN_OTP_GP); 1700 if (tmp & IWN_OTP_GP_ECC_UNCORR_STTS) { 1701 device_printf(sc->sc_dev, 1702 "OTPROM ECC error at 0x%x\n", addr); 1703 return EIO; 1704 } 1705 if (tmp & IWN_OTP_GP_ECC_CORR_STTS) { 1706 /* Correctable ECC error, clear bit. */ 1707 IWN_SETBITS(sc, IWN_OTP_GP, 1708 IWN_OTP_GP_ECC_CORR_STTS); 1709 } 1710 } 1711 *out++ = val >> 16; 1712 if (count > 1) 1713 *out++ = val >> 24; 1714 } 1715 1716 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 1717 1718 return 0; 1719 } 1720 1721 static void 1722 iwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 1723 { 1724 if (error != 0) 1725 return; 1726 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 1727 *(bus_addr_t *)arg = segs[0].ds_addr; 1728 } 1729 1730 static int 1731 iwn_dma_contig_alloc(struct iwn_softc *sc, struct iwn_dma_info *dma, 1732 void **kvap, bus_size_t size, bus_size_t alignment) 1733 { 1734 int error; 1735 1736 dma->tag = NULL; 1737 dma->size = size; 1738 1739 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), alignment, 1740 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size, 1741 1, size, 0, NULL, NULL, &dma->tag); 1742 if (error != 0) 1743 goto fail; 1744 1745 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr, 1746 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map); 1747 if (error != 0) 1748 goto fail; 1749 1750 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, 1751 iwn_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT); 1752 if (error != 0) 1753 goto fail; 1754 1755 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE); 1756 1757 if (kvap != NULL) 1758 *kvap = dma->vaddr; 1759 1760 return 0; 1761 1762 fail: iwn_dma_contig_free(dma); 1763 return error; 1764 } 1765 1766 static void 1767 iwn_dma_contig_free(struct iwn_dma_info *dma) 1768 { 1769 if (dma->vaddr != NULL) { 1770 bus_dmamap_sync(dma->tag, dma->map, 1771 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1772 bus_dmamap_unload(dma->tag, dma->map); 1773 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 1774 dma->vaddr = NULL; 1775 } 1776 if (dma->tag != NULL) { 1777 bus_dma_tag_destroy(dma->tag); 1778 dma->tag = NULL; 1779 } 1780 } 1781 1782 static int 1783 iwn_alloc_sched(struct iwn_softc *sc) 1784 { 1785 /* TX scheduler rings must be aligned on a 1KB boundary. */ 1786 return iwn_dma_contig_alloc(sc, &sc->sched_dma, (void **)&sc->sched, 1787 sc->schedsz, 1024); 1788 } 1789 1790 static void 1791 iwn_free_sched(struct iwn_softc *sc) 1792 { 1793 iwn_dma_contig_free(&sc->sched_dma); 1794 } 1795 1796 static int 1797 iwn_alloc_kw(struct iwn_softc *sc) 1798 { 1799 /* "Keep Warm" page must be aligned on a 4KB boundary. */ 1800 return iwn_dma_contig_alloc(sc, &sc->kw_dma, NULL, 4096, 4096); 1801 } 1802 1803 static void 1804 iwn_free_kw(struct iwn_softc *sc) 1805 { 1806 iwn_dma_contig_free(&sc->kw_dma); 1807 } 1808 1809 static int 1810 iwn_alloc_ict(struct iwn_softc *sc) 1811 { 1812 /* ICT table must be aligned on a 4KB boundary. */ 1813 return iwn_dma_contig_alloc(sc, &sc->ict_dma, (void **)&sc->ict, 1814 IWN_ICT_SIZE, 4096); 1815 } 1816 1817 static void 1818 iwn_free_ict(struct iwn_softc *sc) 1819 { 1820 iwn_dma_contig_free(&sc->ict_dma); 1821 } 1822 1823 static int 1824 iwn_alloc_fwmem(struct iwn_softc *sc) 1825 { 1826 /* Must be aligned on a 16-byte boundary. */ 1827 return iwn_dma_contig_alloc(sc, &sc->fw_dma, NULL, sc->fwsz, 16); 1828 } 1829 1830 static void 1831 iwn_free_fwmem(struct iwn_softc *sc) 1832 { 1833 iwn_dma_contig_free(&sc->fw_dma); 1834 } 1835 1836 static int 1837 iwn_alloc_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring) 1838 { 1839 bus_size_t size; 1840 int i, error; 1841 1842 ring->cur = 0; 1843 1844 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1845 1846 /* Allocate RX descriptors (256-byte aligned). */ 1847 size = IWN_RX_RING_COUNT * sizeof (uint32_t); 1848 error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1849 size, 256); 1850 if (error != 0) { 1851 device_printf(sc->sc_dev, 1852 "%s: could not allocate RX ring DMA memory, error %d\n", 1853 __func__, error); 1854 goto fail; 1855 } 1856 1857 /* Allocate RX status area (16-byte aligned). */ 1858 error = iwn_dma_contig_alloc(sc, &ring->stat_dma, (void **)&ring->stat, 1859 sizeof (struct iwn_rx_status), 16); 1860 if (error != 0) { 1861 device_printf(sc->sc_dev, 1862 "%s: could not allocate RX status DMA memory, error %d\n", 1863 __func__, error); 1864 goto fail; 1865 } 1866 1867 /* Create RX buffer DMA tag. */ 1868 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 1869 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 1870 IWN_RBUF_SIZE, 1, IWN_RBUF_SIZE, 0, NULL, NULL, &ring->data_dmat); 1871 if (error != 0) { 1872 device_printf(sc->sc_dev, 1873 "%s: could not create RX buf DMA tag, error %d\n", 1874 __func__, error); 1875 goto fail; 1876 } 1877 1878 /* 1879 * Allocate and map RX buffers. 1880 */ 1881 for (i = 0; i < IWN_RX_RING_COUNT; i++) { 1882 struct iwn_rx_data *data = &ring->data[i]; 1883 bus_addr_t paddr; 1884 1885 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 1886 if (error != 0) { 1887 device_printf(sc->sc_dev, 1888 "%s: could not create RX buf DMA map, error %d\n", 1889 __func__, error); 1890 goto fail; 1891 } 1892 1893 data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, 1894 IWN_RBUF_SIZE); 1895 if (data->m == NULL) { 1896 device_printf(sc->sc_dev, 1897 "%s: could not allocate RX mbuf\n", __func__); 1898 error = ENOBUFS; 1899 goto fail; 1900 } 1901 1902 error = bus_dmamap_load(ring->data_dmat, data->map, 1903 mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr, 1904 &paddr, BUS_DMA_NOWAIT); 1905 if (error != 0 && error != EFBIG) { 1906 device_printf(sc->sc_dev, 1907 "%s: can't map mbuf, error %d\n", __func__, 1908 error); 1909 goto fail; 1910 } 1911 1912 bus_dmamap_sync(ring->data_dmat, data->map, 1913 BUS_DMASYNC_PREREAD); 1914 1915 /* Set physical address of RX buffer (256-byte aligned). */ 1916 ring->desc[i] = htole32(paddr >> 8); 1917 } 1918 1919 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 1920 BUS_DMASYNC_PREWRITE); 1921 1922 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 1923 1924 return 0; 1925 1926 fail: iwn_free_rx_ring(sc, ring); 1927 1928 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end in error\n",__func__); 1929 1930 return error; 1931 } 1932 1933 static void 1934 iwn_reset_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring) 1935 { 1936 int ntries; 1937 1938 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 1939 1940 if (iwn_nic_lock(sc) == 0) { 1941 IWN_WRITE(sc, IWN_FH_RX_CONFIG, 0); 1942 for (ntries = 0; ntries < 1000; ntries++) { 1943 if (IWN_READ(sc, IWN_FH_RX_STATUS) & 1944 IWN_FH_RX_STATUS_IDLE) 1945 break; 1946 DELAY(10); 1947 } 1948 iwn_nic_unlock(sc); 1949 } 1950 ring->cur = 0; 1951 sc->last_rx_valid = 0; 1952 } 1953 1954 static void 1955 iwn_free_rx_ring(struct iwn_softc *sc, struct iwn_rx_ring *ring) 1956 { 1957 int i; 1958 1959 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s \n", __func__); 1960 1961 iwn_dma_contig_free(&ring->desc_dma); 1962 iwn_dma_contig_free(&ring->stat_dma); 1963 1964 for (i = 0; i < IWN_RX_RING_COUNT; i++) { 1965 struct iwn_rx_data *data = &ring->data[i]; 1966 1967 if (data->m != NULL) { 1968 bus_dmamap_sync(ring->data_dmat, data->map, 1969 BUS_DMASYNC_POSTREAD); 1970 bus_dmamap_unload(ring->data_dmat, data->map); 1971 m_freem(data->m); 1972 data->m = NULL; 1973 } 1974 if (data->map != NULL) 1975 bus_dmamap_destroy(ring->data_dmat, data->map); 1976 } 1977 if (ring->data_dmat != NULL) { 1978 bus_dma_tag_destroy(ring->data_dmat); 1979 ring->data_dmat = NULL; 1980 } 1981 } 1982 1983 static int 1984 iwn_alloc_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring, int qid) 1985 { 1986 bus_addr_t paddr; 1987 bus_size_t size; 1988 int i, error; 1989 1990 ring->qid = qid; 1991 ring->queued = 0; 1992 ring->cur = 0; 1993 1994 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 1995 1996 /* Allocate TX descriptors (256-byte aligned). */ 1997 size = IWN_TX_RING_COUNT * sizeof (struct iwn_tx_desc); 1998 error = iwn_dma_contig_alloc(sc, &ring->desc_dma, (void **)&ring->desc, 1999 size, 256); 2000 if (error != 0) { 2001 device_printf(sc->sc_dev, 2002 "%s: could not allocate TX ring DMA memory, error %d\n", 2003 __func__, error); 2004 goto fail; 2005 } 2006 2007 size = IWN_TX_RING_COUNT * sizeof (struct iwn_tx_cmd); 2008 error = iwn_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd, 2009 size, 4); 2010 if (error != 0) { 2011 device_printf(sc->sc_dev, 2012 "%s: could not allocate TX cmd DMA memory, error %d\n", 2013 __func__, error); 2014 goto fail; 2015 } 2016 2017 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 2018 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 2019 IWN_MAX_SCATTER - 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 2020 if (error != 0) { 2021 device_printf(sc->sc_dev, 2022 "%s: could not create TX buf DMA tag, error %d\n", 2023 __func__, error); 2024 goto fail; 2025 } 2026 2027 paddr = ring->cmd_dma.paddr; 2028 for (i = 0; i < IWN_TX_RING_COUNT; i++) { 2029 struct iwn_tx_data *data = &ring->data[i]; 2030 2031 data->cmd_paddr = paddr; 2032 data->scratch_paddr = paddr + 12; 2033 paddr += sizeof (struct iwn_tx_cmd); 2034 2035 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 2036 if (error != 0) { 2037 device_printf(sc->sc_dev, 2038 "%s: could not create TX buf DMA map, error %d\n", 2039 __func__, error); 2040 goto fail; 2041 } 2042 } 2043 2044 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 2045 2046 return 0; 2047 2048 fail: iwn_free_tx_ring(sc, ring); 2049 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end in error\n", __func__); 2050 return error; 2051 } 2052 2053 static void 2054 iwn_reset_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring) 2055 { 2056 int i; 2057 2058 DPRINTF(sc, IWN_DEBUG_TRACE, "->doing %s \n", __func__); 2059 2060 for (i = 0; i < IWN_TX_RING_COUNT; i++) { 2061 struct iwn_tx_data *data = &ring->data[i]; 2062 2063 if (data->m != NULL) { 2064 bus_dmamap_sync(ring->data_dmat, data->map, 2065 BUS_DMASYNC_POSTWRITE); 2066 bus_dmamap_unload(ring->data_dmat, data->map); 2067 m_freem(data->m); 2068 data->m = NULL; 2069 } 2070 if (data->ni != NULL) { 2071 ieee80211_free_node(data->ni); 2072 data->ni = NULL; 2073 } 2074 } 2075 /* Clear TX descriptors. */ 2076 memset(ring->desc, 0, ring->desc_dma.size); 2077 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 2078 BUS_DMASYNC_PREWRITE); 2079 sc->qfullmsk &= ~(1 << ring->qid); 2080 ring->queued = 0; 2081 ring->cur = 0; 2082 } 2083 2084 static void 2085 iwn_free_tx_ring(struct iwn_softc *sc, struct iwn_tx_ring *ring) 2086 { 2087 int i; 2088 2089 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s \n", __func__); 2090 2091 iwn_dma_contig_free(&ring->desc_dma); 2092 iwn_dma_contig_free(&ring->cmd_dma); 2093 2094 for (i = 0; i < IWN_TX_RING_COUNT; i++) { 2095 struct iwn_tx_data *data = &ring->data[i]; 2096 2097 if (data->m != NULL) { 2098 bus_dmamap_sync(ring->data_dmat, data->map, 2099 BUS_DMASYNC_POSTWRITE); 2100 bus_dmamap_unload(ring->data_dmat, data->map); 2101 m_freem(data->m); 2102 } 2103 if (data->map != NULL) 2104 bus_dmamap_destroy(ring->data_dmat, data->map); 2105 } 2106 if (ring->data_dmat != NULL) { 2107 bus_dma_tag_destroy(ring->data_dmat); 2108 ring->data_dmat = NULL; 2109 } 2110 } 2111 2112 static void 2113 iwn5000_ict_reset(struct iwn_softc *sc) 2114 { 2115 /* Disable interrupts. */ 2116 IWN_WRITE(sc, IWN_INT_MASK, 0); 2117 2118 /* Reset ICT table. */ 2119 memset(sc->ict, 0, IWN_ICT_SIZE); 2120 sc->ict_cur = 0; 2121 2122 bus_dmamap_sync(sc->ict_dma.tag, sc->ict_dma.map, 2123 BUS_DMASYNC_PREWRITE); 2124 2125 /* Set physical address of ICT table (4KB aligned). */ 2126 DPRINTF(sc, IWN_DEBUG_RESET, "%s: enabling ICT\n", __func__); 2127 IWN_WRITE(sc, IWN_DRAM_INT_TBL, IWN_DRAM_INT_TBL_ENABLE | 2128 IWN_DRAM_INT_TBL_WRAP_CHECK | sc->ict_dma.paddr >> 12); 2129 2130 /* Enable periodic RX interrupt. */ 2131 sc->int_mask |= IWN_INT_RX_PERIODIC; 2132 /* Switch to ICT interrupt mode in driver. */ 2133 sc->sc_flags |= IWN_FLAG_USE_ICT; 2134 2135 /* Re-enable interrupts. */ 2136 IWN_WRITE(sc, IWN_INT, 0xffffffff); 2137 IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask); 2138 } 2139 2140 static int 2141 iwn_read_eeprom(struct iwn_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2142 { 2143 struct iwn_ops *ops = &sc->ops; 2144 uint16_t val; 2145 int error; 2146 2147 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 2148 2149 /* Check whether adapter has an EEPROM or an OTPROM. */ 2150 if (sc->hw_type >= IWN_HW_REV_TYPE_1000 && 2151 (IWN_READ(sc, IWN_OTP_GP) & IWN_OTP_GP_DEV_SEL_OTP)) 2152 sc->sc_flags |= IWN_FLAG_HAS_OTPROM; 2153 DPRINTF(sc, IWN_DEBUG_RESET, "%s found\n", 2154 (sc->sc_flags & IWN_FLAG_HAS_OTPROM) ? "OTPROM" : "EEPROM"); 2155 2156 /* Adapter has to be powered on for EEPROM access to work. */ 2157 if ((error = iwn_apm_init(sc)) != 0) { 2158 device_printf(sc->sc_dev, 2159 "%s: could not power ON adapter, error %d\n", __func__, 2160 error); 2161 return error; 2162 } 2163 2164 if ((IWN_READ(sc, IWN_EEPROM_GP) & 0x7) == 0) { 2165 device_printf(sc->sc_dev, "%s: bad ROM signature\n", __func__); 2166 return EIO; 2167 } 2168 if ((error = iwn_eeprom_lock(sc)) != 0) { 2169 device_printf(sc->sc_dev, "%s: could not lock ROM, error %d\n", 2170 __func__, error); 2171 return error; 2172 } 2173 if (sc->sc_flags & IWN_FLAG_HAS_OTPROM) { 2174 if ((error = iwn_init_otprom(sc)) != 0) { 2175 device_printf(sc->sc_dev, 2176 "%s: could not initialize OTPROM, error %d\n", 2177 __func__, error); 2178 return error; 2179 } 2180 } 2181 2182 iwn_read_prom_data(sc, IWN_EEPROM_SKU_CAP, &val, 2); 2183 DPRINTF(sc, IWN_DEBUG_RESET, "SKU capabilities=0x%04x\n", le16toh(val)); 2184 /* Check if HT support is bonded out. */ 2185 if (val & htole16(IWN_EEPROM_SKU_CAP_11N)) 2186 sc->sc_flags |= IWN_FLAG_HAS_11N; 2187 2188 iwn_read_prom_data(sc, IWN_EEPROM_RFCFG, &val, 2); 2189 sc->rfcfg = le16toh(val); 2190 DPRINTF(sc, IWN_DEBUG_RESET, "radio config=0x%04x\n", sc->rfcfg); 2191 /* Read Tx/Rx chains from ROM unless it's known to be broken. */ 2192 if (sc->txchainmask == 0) 2193 sc->txchainmask = IWN_RFCFG_TXANTMSK(sc->rfcfg); 2194 if (sc->rxchainmask == 0) 2195 sc->rxchainmask = IWN_RFCFG_RXANTMSK(sc->rfcfg); 2196 2197 /* Read MAC address. */ 2198 iwn_read_prom_data(sc, IWN_EEPROM_MAC, macaddr, 6); 2199 2200 /* Read adapter-specific information from EEPROM. */ 2201 ops->read_eeprom(sc); 2202 2203 iwn_apm_stop(sc); /* Power OFF adapter. */ 2204 2205 iwn_eeprom_unlock(sc); 2206 2207 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 2208 2209 return 0; 2210 } 2211 2212 static void 2213 iwn4965_read_eeprom(struct iwn_softc *sc) 2214 { 2215 uint32_t addr; 2216 uint16_t val; 2217 int i; 2218 2219 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 2220 2221 /* Read regulatory domain (4 ASCII characters). */ 2222 iwn_read_prom_data(sc, IWN4965_EEPROM_DOMAIN, sc->eeprom_domain, 4); 2223 2224 /* Read the list of authorized channels (20MHz & 40MHz). */ 2225 for (i = 0; i < IWN_NBANDS - 1; i++) { 2226 addr = iwn4965_regulatory_bands[i]; 2227 iwn_read_eeprom_channels(sc, i, addr); 2228 } 2229 2230 /* Read maximum allowed TX power for 2GHz and 5GHz bands. */ 2231 iwn_read_prom_data(sc, IWN4965_EEPROM_MAXPOW, &val, 2); 2232 sc->maxpwr2GHz = val & 0xff; 2233 sc->maxpwr5GHz = val >> 8; 2234 /* Check that EEPROM values are within valid range. */ 2235 if (sc->maxpwr5GHz < 20 || sc->maxpwr5GHz > 50) 2236 sc->maxpwr5GHz = 38; 2237 if (sc->maxpwr2GHz < 20 || sc->maxpwr2GHz > 50) 2238 sc->maxpwr2GHz = 38; 2239 DPRINTF(sc, IWN_DEBUG_RESET, "maxpwr 2GHz=%d 5GHz=%d\n", 2240 sc->maxpwr2GHz, sc->maxpwr5GHz); 2241 2242 /* Read samples for each TX power group. */ 2243 iwn_read_prom_data(sc, IWN4965_EEPROM_BANDS, sc->bands, 2244 sizeof sc->bands); 2245 2246 /* Read voltage at which samples were taken. */ 2247 iwn_read_prom_data(sc, IWN4965_EEPROM_VOLTAGE, &val, 2); 2248 sc->eeprom_voltage = (int16_t)le16toh(val); 2249 DPRINTF(sc, IWN_DEBUG_RESET, "voltage=%d (in 0.3V)\n", 2250 sc->eeprom_voltage); 2251 2252 #ifdef IWN_DEBUG 2253 /* Print samples. */ 2254 if (sc->sc_debug & IWN_DEBUG_ANY) { 2255 for (i = 0; i < IWN_NBANDS - 1; i++) 2256 iwn4965_print_power_group(sc, i); 2257 } 2258 #endif 2259 2260 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 2261 } 2262 2263 #ifdef IWN_DEBUG 2264 static void 2265 iwn4965_print_power_group(struct iwn_softc *sc, int i) 2266 { 2267 struct iwn4965_eeprom_band *band = &sc->bands[i]; 2268 struct iwn4965_eeprom_chan_samples *chans = band->chans; 2269 int j, c; 2270 2271 printf("===band %d===\n", i); 2272 printf("chan lo=%d, chan hi=%d\n", band->lo, band->hi); 2273 printf("chan1 num=%d\n", chans[0].num); 2274 for (c = 0; c < 2; c++) { 2275 for (j = 0; j < IWN_NSAMPLES; j++) { 2276 printf("chain %d, sample %d: temp=%d gain=%d " 2277 "power=%d pa_det=%d\n", c, j, 2278 chans[0].samples[c][j].temp, 2279 chans[0].samples[c][j].gain, 2280 chans[0].samples[c][j].power, 2281 chans[0].samples[c][j].pa_det); 2282 } 2283 } 2284 printf("chan2 num=%d\n", chans[1].num); 2285 for (c = 0; c < 2; c++) { 2286 for (j = 0; j < IWN_NSAMPLES; j++) { 2287 printf("chain %d, sample %d: temp=%d gain=%d " 2288 "power=%d pa_det=%d\n", c, j, 2289 chans[1].samples[c][j].temp, 2290 chans[1].samples[c][j].gain, 2291 chans[1].samples[c][j].power, 2292 chans[1].samples[c][j].pa_det); 2293 } 2294 } 2295 } 2296 #endif 2297 2298 static void 2299 iwn5000_read_eeprom(struct iwn_softc *sc) 2300 { 2301 struct iwn5000_eeprom_calib_hdr hdr; 2302 int32_t volt; 2303 uint32_t base, addr; 2304 uint16_t val; 2305 int i; 2306 2307 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 2308 2309 /* Read regulatory domain (4 ASCII characters). */ 2310 iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2); 2311 base = le16toh(val); 2312 iwn_read_prom_data(sc, base + IWN5000_EEPROM_DOMAIN, 2313 sc->eeprom_domain, 4); 2314 2315 /* Read the list of authorized channels (20MHz & 40MHz). */ 2316 for (i = 0; i < IWN_NBANDS - 1; i++) { 2317 addr = base + sc->base_params->regulatory_bands[i]; 2318 iwn_read_eeprom_channels(sc, i, addr); 2319 } 2320 2321 /* Read enhanced TX power information for 6000 Series. */ 2322 if (sc->base_params->enhanced_TX_power) 2323 iwn_read_eeprom_enhinfo(sc); 2324 2325 iwn_read_prom_data(sc, IWN5000_EEPROM_CAL, &val, 2); 2326 base = le16toh(val); 2327 iwn_read_prom_data(sc, base, &hdr, sizeof hdr); 2328 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 2329 "%s: calib version=%u pa type=%u voltage=%u\n", __func__, 2330 hdr.version, hdr.pa_type, le16toh(hdr.volt)); 2331 sc->calib_ver = hdr.version; 2332 2333 if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TEMP_OFFSETv2) { 2334 sc->eeprom_voltage = le16toh(hdr.volt); 2335 iwn_read_prom_data(sc, base + IWN5000_EEPROM_TEMP, &val, 2); 2336 sc->eeprom_temp_high=le16toh(val); 2337 iwn_read_prom_data(sc, base + IWN5000_EEPROM_VOLT, &val, 2); 2338 sc->eeprom_temp = le16toh(val); 2339 } 2340 2341 if (sc->hw_type == IWN_HW_REV_TYPE_5150) { 2342 /* Compute temperature offset. */ 2343 iwn_read_prom_data(sc, base + IWN5000_EEPROM_TEMP, &val, 2); 2344 sc->eeprom_temp = le16toh(val); 2345 iwn_read_prom_data(sc, base + IWN5000_EEPROM_VOLT, &val, 2); 2346 volt = le16toh(val); 2347 sc->temp_off = sc->eeprom_temp - (volt / -5); 2348 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "temp=%d volt=%d offset=%dK\n", 2349 sc->eeprom_temp, volt, sc->temp_off); 2350 } else { 2351 /* Read crystal calibration. */ 2352 iwn_read_prom_data(sc, base + IWN5000_EEPROM_CRYSTAL, 2353 &sc->eeprom_crystal, sizeof (uint32_t)); 2354 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "crystal calibration 0x%08x\n", 2355 le32toh(sc->eeprom_crystal)); 2356 } 2357 2358 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 2359 2360 } 2361 2362 /* 2363 * Translate EEPROM flags to net80211. 2364 */ 2365 static uint32_t 2366 iwn_eeprom_channel_flags(struct iwn_eeprom_chan *channel) 2367 { 2368 uint32_t nflags; 2369 2370 nflags = 0; 2371 if ((channel->flags & IWN_EEPROM_CHAN_ACTIVE) == 0) 2372 nflags |= IEEE80211_CHAN_PASSIVE; 2373 if ((channel->flags & IWN_EEPROM_CHAN_IBSS) == 0) 2374 nflags |= IEEE80211_CHAN_NOADHOC; 2375 if (channel->flags & IWN_EEPROM_CHAN_RADAR) { 2376 nflags |= IEEE80211_CHAN_DFS; 2377 /* XXX apparently IBSS may still be marked */ 2378 nflags |= IEEE80211_CHAN_NOADHOC; 2379 } 2380 2381 return nflags; 2382 } 2383 2384 static void 2385 iwn_read_eeprom_band(struct iwn_softc *sc, int n, int maxchans, int *nchans, 2386 struct ieee80211_channel chans[]) 2387 { 2388 struct iwn_eeprom_chan *channels = sc->eeprom_channels[n]; 2389 const struct iwn_chan_band *band = &iwn_bands[n]; 2390 uint8_t bands[IEEE80211_MODE_BYTES]; 2391 uint8_t chan; 2392 int i, error, nflags; 2393 2394 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 2395 2396 memset(bands, 0, sizeof(bands)); 2397 if (n == 0) { 2398 setbit(bands, IEEE80211_MODE_11B); 2399 setbit(bands, IEEE80211_MODE_11G); 2400 if (sc->sc_flags & IWN_FLAG_HAS_11N) 2401 setbit(bands, IEEE80211_MODE_11NG); 2402 } else { 2403 setbit(bands, IEEE80211_MODE_11A); 2404 if (sc->sc_flags & IWN_FLAG_HAS_11N) 2405 setbit(bands, IEEE80211_MODE_11NA); 2406 } 2407 2408 for (i = 0; i < band->nchan; i++) { 2409 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) { 2410 DPRINTF(sc, IWN_DEBUG_RESET, 2411 "skip chan %d flags 0x%x maxpwr %d\n", 2412 band->chan[i], channels[i].flags, 2413 channels[i].maxpwr); 2414 continue; 2415 } 2416 2417 chan = band->chan[i]; 2418 nflags = iwn_eeprom_channel_flags(&channels[i]); 2419 error = ieee80211_add_channel(chans, maxchans, nchans, 2420 chan, 0, channels[i].maxpwr, nflags, bands); 2421 if (error != 0) 2422 break; 2423 2424 /* Save maximum allowed TX power for this channel. */ 2425 /* XXX wrong */ 2426 sc->maxpwr[chan] = channels[i].maxpwr; 2427 2428 DPRINTF(sc, IWN_DEBUG_RESET, 2429 "add chan %d flags 0x%x maxpwr %d\n", chan, 2430 channels[i].flags, channels[i].maxpwr); 2431 } 2432 2433 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 2434 2435 } 2436 2437 static void 2438 iwn_read_eeprom_ht40(struct iwn_softc *sc, int n, int maxchans, int *nchans, 2439 struct ieee80211_channel chans[]) 2440 { 2441 struct iwn_eeprom_chan *channels = sc->eeprom_channels[n]; 2442 const struct iwn_chan_band *band = &iwn_bands[n]; 2443 uint8_t chan; 2444 int i, error, nflags; 2445 2446 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s start\n", __func__); 2447 2448 if (!(sc->sc_flags & IWN_FLAG_HAS_11N)) { 2449 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end no 11n\n", __func__); 2450 return; 2451 } 2452 2453 for (i = 0; i < band->nchan; i++) { 2454 if (!(channels[i].flags & IWN_EEPROM_CHAN_VALID)) { 2455 DPRINTF(sc, IWN_DEBUG_RESET, 2456 "skip chan %d flags 0x%x maxpwr %d\n", 2457 band->chan[i], channels[i].flags, 2458 channels[i].maxpwr); 2459 continue; 2460 } 2461 2462 chan = band->chan[i]; 2463 nflags = iwn_eeprom_channel_flags(&channels[i]); 2464 nflags |= (n == 5 ? IEEE80211_CHAN_G : IEEE80211_CHAN_A); 2465 error = ieee80211_add_channel_ht40(chans, maxchans, nchans, 2466 chan, channels[i].maxpwr, nflags); 2467 switch (error) { 2468 case EINVAL: 2469 device_printf(sc->sc_dev, 2470 "%s: no entry for channel %d\n", __func__, chan); 2471 continue; 2472 case ENOENT: 2473 DPRINTF(sc, IWN_DEBUG_RESET, 2474 "%s: skip chan %d, extension channel not found\n", 2475 __func__, chan); 2476 continue; 2477 case ENOBUFS: 2478 device_printf(sc->sc_dev, 2479 "%s: channel table is full!\n", __func__); 2480 break; 2481 case 0: 2482 DPRINTF(sc, IWN_DEBUG_RESET, 2483 "add ht40 chan %d flags 0x%x maxpwr %d\n", 2484 chan, channels[i].flags, channels[i].maxpwr); 2485 /* FALLTHROUGH */ 2486 default: 2487 break; 2488 } 2489 } 2490 2491 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 2492 2493 } 2494 2495 static void 2496 iwn_read_eeprom_channels(struct iwn_softc *sc, int n, uint32_t addr) 2497 { 2498 struct ieee80211com *ic = &sc->sc_ic; 2499 2500 iwn_read_prom_data(sc, addr, &sc->eeprom_channels[n], 2501 iwn_bands[n].nchan * sizeof (struct iwn_eeprom_chan)); 2502 2503 if (n < 5) { 2504 iwn_read_eeprom_band(sc, n, IEEE80211_CHAN_MAX, &ic->ic_nchans, 2505 ic->ic_channels); 2506 } else { 2507 iwn_read_eeprom_ht40(sc, n, IEEE80211_CHAN_MAX, &ic->ic_nchans, 2508 ic->ic_channels); 2509 } 2510 ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans); 2511 } 2512 2513 static struct iwn_eeprom_chan * 2514 iwn_find_eeprom_channel(struct iwn_softc *sc, struct ieee80211_channel *c) 2515 { 2516 int band, chan, i, j; 2517 2518 if (IEEE80211_IS_CHAN_HT40(c)) { 2519 band = IEEE80211_IS_CHAN_5GHZ(c) ? 6 : 5; 2520 if (IEEE80211_IS_CHAN_HT40D(c)) 2521 chan = c->ic_extieee; 2522 else 2523 chan = c->ic_ieee; 2524 for (i = 0; i < iwn_bands[band].nchan; i++) { 2525 if (iwn_bands[band].chan[i] == chan) 2526 return &sc->eeprom_channels[band][i]; 2527 } 2528 } else { 2529 for (j = 0; j < 5; j++) { 2530 for (i = 0; i < iwn_bands[j].nchan; i++) { 2531 if (iwn_bands[j].chan[i] == c->ic_ieee && 2532 ((j == 0) ^ IEEE80211_IS_CHAN_A(c)) == 1) 2533 return &sc->eeprom_channels[j][i]; 2534 } 2535 } 2536 } 2537 return NULL; 2538 } 2539 2540 static void 2541 iwn_getradiocaps(struct ieee80211com *ic, 2542 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2543 { 2544 struct iwn_softc *sc = ic->ic_softc; 2545 int i; 2546 2547 /* Parse the list of authorized channels. */ 2548 for (i = 0; i < 5 && *nchans < maxchans; i++) 2549 iwn_read_eeprom_band(sc, i, maxchans, nchans, chans); 2550 for (i = 5; i < IWN_NBANDS - 1 && *nchans < maxchans; i++) 2551 iwn_read_eeprom_ht40(sc, i, maxchans, nchans, chans); 2552 } 2553 2554 /* 2555 * Enforce flags read from EEPROM. 2556 */ 2557 static int 2558 iwn_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *rd, 2559 int nchan, struct ieee80211_channel chans[]) 2560 { 2561 struct iwn_softc *sc = ic->ic_softc; 2562 int i; 2563 2564 for (i = 0; i < nchan; i++) { 2565 struct ieee80211_channel *c = &chans[i]; 2566 struct iwn_eeprom_chan *channel; 2567 2568 channel = iwn_find_eeprom_channel(sc, c); 2569 if (channel == NULL) { 2570 ic_printf(ic, "%s: invalid channel %u freq %u/0x%x\n", 2571 __func__, c->ic_ieee, c->ic_freq, c->ic_flags); 2572 return EINVAL; 2573 } 2574 c->ic_flags |= iwn_eeprom_channel_flags(channel); 2575 } 2576 2577 return 0; 2578 } 2579 2580 static void 2581 iwn_read_eeprom_enhinfo(struct iwn_softc *sc) 2582 { 2583 struct iwn_eeprom_enhinfo enhinfo[35]; 2584 struct ieee80211com *ic = &sc->sc_ic; 2585 struct ieee80211_channel *c; 2586 uint16_t val, base; 2587 int8_t maxpwr; 2588 uint8_t flags; 2589 int i, j; 2590 2591 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 2592 2593 iwn_read_prom_data(sc, IWN5000_EEPROM_REG, &val, 2); 2594 base = le16toh(val); 2595 iwn_read_prom_data(sc, base + IWN6000_EEPROM_ENHINFO, 2596 enhinfo, sizeof enhinfo); 2597 2598 for (i = 0; i < nitems(enhinfo); i++) { 2599 flags = enhinfo[i].flags; 2600 if (!(flags & IWN_ENHINFO_VALID)) 2601 continue; /* Skip invalid entries. */ 2602 2603 maxpwr = 0; 2604 if (sc->txchainmask & IWN_ANT_A) 2605 maxpwr = MAX(maxpwr, enhinfo[i].chain[0]); 2606 if (sc->txchainmask & IWN_ANT_B) 2607 maxpwr = MAX(maxpwr, enhinfo[i].chain[1]); 2608 if (sc->txchainmask & IWN_ANT_C) 2609 maxpwr = MAX(maxpwr, enhinfo[i].chain[2]); 2610 if (sc->ntxchains == 2) 2611 maxpwr = MAX(maxpwr, enhinfo[i].mimo2); 2612 else if (sc->ntxchains == 3) 2613 maxpwr = MAX(maxpwr, enhinfo[i].mimo3); 2614 2615 for (j = 0; j < ic->ic_nchans; j++) { 2616 c = &ic->ic_channels[j]; 2617 if ((flags & IWN_ENHINFO_5GHZ)) { 2618 if (!IEEE80211_IS_CHAN_A(c)) 2619 continue; 2620 } else if ((flags & IWN_ENHINFO_OFDM)) { 2621 if (!IEEE80211_IS_CHAN_G(c)) 2622 continue; 2623 } else if (!IEEE80211_IS_CHAN_B(c)) 2624 continue; 2625 if ((flags & IWN_ENHINFO_HT40)) { 2626 if (!IEEE80211_IS_CHAN_HT40(c)) 2627 continue; 2628 } else { 2629 if (IEEE80211_IS_CHAN_HT40(c)) 2630 continue; 2631 } 2632 if (enhinfo[i].chan != 0 && 2633 enhinfo[i].chan != c->ic_ieee) 2634 continue; 2635 2636 DPRINTF(sc, IWN_DEBUG_RESET, 2637 "channel %d(%x), maxpwr %d\n", c->ic_ieee, 2638 c->ic_flags, maxpwr / 2); 2639 c->ic_maxregpower = maxpwr / 2; 2640 c->ic_maxpower = maxpwr; 2641 } 2642 } 2643 2644 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end\n", __func__); 2645 2646 } 2647 2648 static struct ieee80211_node * 2649 iwn_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 2650 { 2651 return malloc(sizeof (struct iwn_node), M_80211_NODE,M_NOWAIT | M_ZERO); 2652 } 2653 2654 static __inline int 2655 rate2plcp(int rate) 2656 { 2657 switch (rate & 0xff) { 2658 case 12: return 0xd; 2659 case 18: return 0xf; 2660 case 24: return 0x5; 2661 case 36: return 0x7; 2662 case 48: return 0x9; 2663 case 72: return 0xb; 2664 case 96: return 0x1; 2665 case 108: return 0x3; 2666 case 2: return 10; 2667 case 4: return 20; 2668 case 11: return 55; 2669 case 22: return 110; 2670 } 2671 return 0; 2672 } 2673 2674 static int 2675 iwn_get_1stream_tx_antmask(struct iwn_softc *sc) 2676 { 2677 2678 return IWN_LSB(sc->txchainmask); 2679 } 2680 2681 static int 2682 iwn_get_2stream_tx_antmask(struct iwn_softc *sc) 2683 { 2684 int tx; 2685 2686 /* 2687 * The '2 stream' setup is a bit .. odd. 2688 * 2689 * For NICs that support only 1 antenna, default to IWN_ANT_AB or 2690 * the firmware panics (eg Intel 5100.) 2691 * 2692 * For NICs that support two antennas, we use ANT_AB. 2693 * 2694 * For NICs that support three antennas, we use the two that 2695 * wasn't the default one. 2696 * 2697 * XXX TODO: if bluetooth (full concurrent) is enabled, restrict 2698 * this to only one antenna. 2699 */ 2700 2701 /* Default - transmit on the other antennas */ 2702 tx = (sc->txchainmask & ~IWN_LSB(sc->txchainmask)); 2703 2704 /* Now, if it's zero, set it to IWN_ANT_AB, so to not panic firmware */ 2705 if (tx == 0) 2706 tx = IWN_ANT_AB; 2707 2708 /* 2709 * If the NIC is a two-stream TX NIC, configure the TX mask to 2710 * the default chainmask 2711 */ 2712 else if (sc->ntxchains == 2) 2713 tx = sc->txchainmask; 2714 2715 return (tx); 2716 } 2717 2718 2719 2720 /* 2721 * Calculate the required PLCP value from the given rate, 2722 * to the given node. 2723 * 2724 * This will take the node configuration (eg 11n, rate table 2725 * setup, etc) into consideration. 2726 */ 2727 static uint32_t 2728 iwn_rate_to_plcp(struct iwn_softc *sc, struct ieee80211_node *ni, 2729 uint8_t rate) 2730 { 2731 struct ieee80211com *ic = ni->ni_ic; 2732 uint32_t plcp = 0; 2733 int ridx; 2734 2735 /* 2736 * If it's an MCS rate, let's set the plcp correctly 2737 * and set the relevant flags based on the node config. 2738 */ 2739 if (rate & IEEE80211_RATE_MCS) { 2740 /* 2741 * Set the initial PLCP value to be between 0->31 for 2742 * MCS 0 -> MCS 31, then set the "I'm an MCS rate!" 2743 * flag. 2744 */ 2745 plcp = IEEE80211_RV(rate) | IWN_RFLAG_MCS; 2746 2747 /* 2748 * XXX the following should only occur if both 2749 * the local configuration _and_ the remote node 2750 * advertise these capabilities. Thus this code 2751 * may need fixing! 2752 */ 2753 2754 /* 2755 * Set the channel width and guard interval. 2756 */ 2757 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) { 2758 plcp |= IWN_RFLAG_HT40; 2759 if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI40) 2760 plcp |= IWN_RFLAG_SGI; 2761 } else if (ni->ni_htcap & IEEE80211_HTCAP_SHORTGI20) { 2762 plcp |= IWN_RFLAG_SGI; 2763 } 2764 2765 /* 2766 * Ensure the selected rate matches the link quality 2767 * table entries being used. 2768 */ 2769 if (rate > 0x8f) 2770 plcp |= IWN_RFLAG_ANT(sc->txchainmask); 2771 else if (rate > 0x87) 2772 plcp |= IWN_RFLAG_ANT(iwn_get_2stream_tx_antmask(sc)); 2773 else 2774 plcp |= IWN_RFLAG_ANT(iwn_get_1stream_tx_antmask(sc)); 2775 } else { 2776 /* 2777 * Set the initial PLCP - fine for both 2778 * OFDM and CCK rates. 2779 */ 2780 plcp = rate2plcp(rate); 2781 2782 /* Set CCK flag if it's CCK */ 2783 2784 /* XXX It would be nice to have a method 2785 * to map the ridx -> phy table entry 2786 * so we could just query that, rather than 2787 * this hack to check against IWN_RIDX_OFDM6. 2788 */ 2789 ridx = ieee80211_legacy_rate_lookup(ic->ic_rt, 2790 rate & IEEE80211_RATE_VAL); 2791 if (ridx < IWN_RIDX_OFDM6 && 2792 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2793 plcp |= IWN_RFLAG_CCK; 2794 2795 /* Set antenna configuration */ 2796 /* XXX TODO: is this the right antenna to use for legacy? */ 2797 plcp |= IWN_RFLAG_ANT(iwn_get_1stream_tx_antmask(sc)); 2798 } 2799 2800 DPRINTF(sc, IWN_DEBUG_TXRATE, "%s: rate=0x%02x, plcp=0x%08x\n", 2801 __func__, 2802 rate, 2803 plcp); 2804 2805 return (htole32(plcp)); 2806 } 2807 2808 static void 2809 iwn_newassoc(struct ieee80211_node *ni, int isnew) 2810 { 2811 /* Doesn't do anything at the moment */ 2812 } 2813 2814 static int 2815 iwn_media_change(struct ifnet *ifp) 2816 { 2817 int error; 2818 2819 error = ieee80211_media_change(ifp); 2820 /* NB: only the fixed rate can change and that doesn't need a reset */ 2821 return (error == ENETRESET ? 0 : error); 2822 } 2823 2824 static int 2825 iwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 2826 { 2827 struct iwn_vap *ivp = IWN_VAP(vap); 2828 struct ieee80211com *ic = vap->iv_ic; 2829 struct iwn_softc *sc = ic->ic_softc; 2830 int error = 0; 2831 2832 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 2833 2834 DPRINTF(sc, IWN_DEBUG_STATE, "%s: %s -> %s\n", __func__, 2835 ieee80211_state_name[vap->iv_state], ieee80211_state_name[nstate]); 2836 2837 IEEE80211_UNLOCK(ic); 2838 IWN_LOCK(sc); 2839 callout_stop(&sc->calib_to); 2840 2841 sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX]; 2842 2843 switch (nstate) { 2844 case IEEE80211_S_ASSOC: 2845 if (vap->iv_state != IEEE80211_S_RUN) 2846 break; 2847 /* FALLTHROUGH */ 2848 case IEEE80211_S_AUTH: 2849 if (vap->iv_state == IEEE80211_S_AUTH) 2850 break; 2851 2852 /* 2853 * !AUTH -> AUTH transition requires state reset to handle 2854 * reassociations correctly. 2855 */ 2856 sc->rxon->associd = 0; 2857 sc->rxon->filter &= ~htole32(IWN_FILTER_BSS); 2858 sc->calib.state = IWN_CALIB_STATE_INIT; 2859 2860 /* Wait until we hear a beacon before we transmit */ 2861 if (IEEE80211_IS_CHAN_PASSIVE(ic->ic_curchan)) 2862 sc->sc_beacon_wait = 1; 2863 2864 if ((error = iwn_auth(sc, vap)) != 0) { 2865 device_printf(sc->sc_dev, 2866 "%s: could not move to auth state\n", __func__); 2867 } 2868 break; 2869 2870 case IEEE80211_S_RUN: 2871 /* 2872 * RUN -> RUN transition; Just restart the timers. 2873 */ 2874 if (vap->iv_state == IEEE80211_S_RUN) { 2875 sc->calib_cnt = 0; 2876 break; 2877 } 2878 2879 /* Wait until we hear a beacon before we transmit */ 2880 if (IEEE80211_IS_CHAN_PASSIVE(ic->ic_curchan)) 2881 sc->sc_beacon_wait = 1; 2882 2883 /* 2884 * !RUN -> RUN requires setting the association id 2885 * which is done with a firmware cmd. We also defer 2886 * starting the timers until that work is done. 2887 */ 2888 if ((error = iwn_run(sc, vap)) != 0) { 2889 device_printf(sc->sc_dev, 2890 "%s: could not move to run state\n", __func__); 2891 } 2892 break; 2893 2894 case IEEE80211_S_INIT: 2895 sc->calib.state = IWN_CALIB_STATE_INIT; 2896 /* 2897 * Purge the xmit queue so we don't have old frames 2898 * during a new association attempt. 2899 */ 2900 sc->sc_beacon_wait = 0; 2901 iwn_xmit_queue_drain(sc); 2902 break; 2903 2904 default: 2905 break; 2906 } 2907 IWN_UNLOCK(sc); 2908 IEEE80211_LOCK(ic); 2909 if (error != 0){ 2910 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end in error\n", __func__); 2911 return error; 2912 } 2913 2914 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 2915 2916 return ivp->iv_newstate(vap, nstate, arg); 2917 } 2918 2919 static void 2920 iwn_calib_timeout(void *arg) 2921 { 2922 struct iwn_softc *sc = arg; 2923 2924 IWN_LOCK_ASSERT(sc); 2925 2926 /* Force automatic TX power calibration every 60 secs. */ 2927 if (++sc->calib_cnt >= 120) { 2928 uint32_t flags = 0; 2929 2930 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s\n", 2931 "sending request for statistics"); 2932 (void)iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags, 2933 sizeof flags, 1); 2934 sc->calib_cnt = 0; 2935 } 2936 callout_reset(&sc->calib_to, msecs_to_ticks(500), iwn_calib_timeout, 2937 sc); 2938 } 2939 2940 /* 2941 * Process an RX_PHY firmware notification. This is usually immediately 2942 * followed by an MPDU_RX_DONE notification. 2943 */ 2944 static void 2945 iwn_rx_phy(struct iwn_softc *sc, struct iwn_rx_desc *desc, 2946 struct iwn_rx_data *data) 2947 { 2948 struct iwn_rx_stat *stat = (struct iwn_rx_stat *)(desc + 1); 2949 2950 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: received PHY stats\n", __func__); 2951 bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD); 2952 2953 /* Save RX statistics, they will be used on MPDU_RX_DONE. */ 2954 memcpy(&sc->last_rx_stat, stat, sizeof (*stat)); 2955 sc->last_rx_valid = 1; 2956 } 2957 2958 /* 2959 * Process an RX_DONE (4965AGN only) or MPDU_RX_DONE firmware notification. 2960 * Each MPDU_RX_DONE notification must be preceded by an RX_PHY one. 2961 */ 2962 static void 2963 iwn_rx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc, 2964 struct iwn_rx_data *data) 2965 { 2966 struct iwn_ops *ops = &sc->ops; 2967 struct ieee80211com *ic = &sc->sc_ic; 2968 struct iwn_rx_ring *ring = &sc->rxq; 2969 struct ieee80211_frame *wh; 2970 struct ieee80211_node *ni; 2971 struct mbuf *m, *m1; 2972 struct iwn_rx_stat *stat; 2973 caddr_t head; 2974 bus_addr_t paddr; 2975 uint32_t flags; 2976 int error, len, rssi, nf; 2977 2978 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 2979 2980 if (desc->type == IWN_MPDU_RX_DONE) { 2981 /* Check for prior RX_PHY notification. */ 2982 if (!sc->last_rx_valid) { 2983 DPRINTF(sc, IWN_DEBUG_ANY, 2984 "%s: missing RX_PHY\n", __func__); 2985 return; 2986 } 2987 stat = &sc->last_rx_stat; 2988 } else 2989 stat = (struct iwn_rx_stat *)(desc + 1); 2990 2991 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 2992 2993 if (stat->cfg_phy_len > IWN_STAT_MAXLEN) { 2994 device_printf(sc->sc_dev, 2995 "%s: invalid RX statistic header, len %d\n", __func__, 2996 stat->cfg_phy_len); 2997 return; 2998 } 2999 if (desc->type == IWN_MPDU_RX_DONE) { 3000 struct iwn_rx_mpdu *mpdu = (struct iwn_rx_mpdu *)(desc + 1); 3001 head = (caddr_t)(mpdu + 1); 3002 len = le16toh(mpdu->len); 3003 } else { 3004 head = (caddr_t)(stat + 1) + stat->cfg_phy_len; 3005 len = le16toh(stat->len); 3006 } 3007 3008 flags = le32toh(*(uint32_t *)(head + len)); 3009 3010 /* Discard frames with a bad FCS early. */ 3011 if ((flags & IWN_RX_NOERROR) != IWN_RX_NOERROR) { 3012 DPRINTF(sc, IWN_DEBUG_RECV, "%s: RX flags error %x\n", 3013 __func__, flags); 3014 counter_u64_add(ic->ic_ierrors, 1); 3015 return; 3016 } 3017 /* Discard frames that are too short. */ 3018 if (len < sizeof (struct ieee80211_frame_ack)) { 3019 DPRINTF(sc, IWN_DEBUG_RECV, "%s: frame too short: %d\n", 3020 __func__, len); 3021 counter_u64_add(ic->ic_ierrors, 1); 3022 return; 3023 } 3024 3025 m1 = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, IWN_RBUF_SIZE); 3026 if (m1 == NULL) { 3027 DPRINTF(sc, IWN_DEBUG_ANY, "%s: no mbuf to restock ring\n", 3028 __func__); 3029 counter_u64_add(ic->ic_ierrors, 1); 3030 return; 3031 } 3032 bus_dmamap_unload(ring->data_dmat, data->map); 3033 3034 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m1, void *), 3035 IWN_RBUF_SIZE, iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 3036 if (error != 0 && error != EFBIG) { 3037 device_printf(sc->sc_dev, 3038 "%s: bus_dmamap_load failed, error %d\n", __func__, error); 3039 m_freem(m1); 3040 3041 /* Try to reload the old mbuf. */ 3042 error = bus_dmamap_load(ring->data_dmat, data->map, 3043 mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr, 3044 &paddr, BUS_DMA_NOWAIT); 3045 if (error != 0 && error != EFBIG) { 3046 panic("%s: could not load old RX mbuf", __func__); 3047 } 3048 bus_dmamap_sync(ring->data_dmat, data->map, 3049 BUS_DMASYNC_PREREAD); 3050 /* Physical address may have changed. */ 3051 ring->desc[ring->cur] = htole32(paddr >> 8); 3052 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 3053 BUS_DMASYNC_PREWRITE); 3054 counter_u64_add(ic->ic_ierrors, 1); 3055 return; 3056 } 3057 3058 bus_dmamap_sync(ring->data_dmat, data->map, 3059 BUS_DMASYNC_PREREAD); 3060 3061 m = data->m; 3062 data->m = m1; 3063 /* Update RX descriptor. */ 3064 ring->desc[ring->cur] = htole32(paddr >> 8); 3065 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 3066 BUS_DMASYNC_PREWRITE); 3067 3068 /* Finalize mbuf. */ 3069 m->m_data = head; 3070 m->m_pkthdr.len = m->m_len = len; 3071 3072 /* Grab a reference to the source node. */ 3073 wh = mtod(m, struct ieee80211_frame *); 3074 if (len >= sizeof(struct ieee80211_frame_min)) 3075 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 3076 else 3077 ni = NULL; 3078 nf = (ni != NULL && ni->ni_vap->iv_state == IEEE80211_S_RUN && 3079 (ic->ic_flags & IEEE80211_F_SCAN) == 0) ? sc->noise : -95; 3080 3081 rssi = ops->get_rssi(sc, stat); 3082 3083 if (ieee80211_radiotap_active(ic)) { 3084 struct iwn_rx_radiotap_header *tap = &sc->sc_rxtap; 3085 3086 tap->wr_flags = 0; 3087 if (stat->flags & htole16(IWN_STAT_FLAG_SHPREAMBLE)) 3088 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 3089 tap->wr_dbm_antsignal = (int8_t)rssi; 3090 tap->wr_dbm_antnoise = (int8_t)nf; 3091 tap->wr_tsft = stat->tstamp; 3092 switch (stat->rate) { 3093 /* CCK rates. */ 3094 case 10: tap->wr_rate = 2; break; 3095 case 20: tap->wr_rate = 4; break; 3096 case 55: tap->wr_rate = 11; break; 3097 case 110: tap->wr_rate = 22; break; 3098 /* OFDM rates. */ 3099 case 0xd: tap->wr_rate = 12; break; 3100 case 0xf: tap->wr_rate = 18; break; 3101 case 0x5: tap->wr_rate = 24; break; 3102 case 0x7: tap->wr_rate = 36; break; 3103 case 0x9: tap->wr_rate = 48; break; 3104 case 0xb: tap->wr_rate = 72; break; 3105 case 0x1: tap->wr_rate = 96; break; 3106 case 0x3: tap->wr_rate = 108; break; 3107 /* Unknown rate: should not happen. */ 3108 default: tap->wr_rate = 0; 3109 } 3110 } 3111 3112 /* 3113 * If it's a beacon and we're waiting, then do the 3114 * wakeup. This should unblock raw_xmit/start. 3115 */ 3116 if (sc->sc_beacon_wait) { 3117 uint8_t type, subtype; 3118 /* NB: Re-assign wh */ 3119 wh = mtod(m, struct ieee80211_frame *); 3120 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 3121 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 3122 /* 3123 * This assumes at this point we've received our own 3124 * beacon. 3125 */ 3126 DPRINTF(sc, IWN_DEBUG_TRACE, 3127 "%s: beacon_wait, type=%d, subtype=%d\n", 3128 __func__, type, subtype); 3129 if (type == IEEE80211_FC0_TYPE_MGT && 3130 subtype == IEEE80211_FC0_SUBTYPE_BEACON) { 3131 DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT, 3132 "%s: waking things up\n", __func__); 3133 /* queue taskqueue to transmit! */ 3134 taskqueue_enqueue(sc->sc_tq, &sc->sc_xmit_task); 3135 } 3136 } 3137 3138 IWN_UNLOCK(sc); 3139 3140 /* Send the frame to the 802.11 layer. */ 3141 if (ni != NULL) { 3142 if (ni->ni_flags & IEEE80211_NODE_HT) 3143 m->m_flags |= M_AMPDU; 3144 (void)ieee80211_input(ni, m, rssi - nf, nf); 3145 /* Node is no longer needed. */ 3146 ieee80211_free_node(ni); 3147 } else 3148 (void)ieee80211_input_all(ic, m, rssi - nf, nf); 3149 3150 IWN_LOCK(sc); 3151 3152 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 3153 3154 } 3155 3156 /* Process an incoming Compressed BlockAck. */ 3157 static void 3158 iwn_rx_compressed_ba(struct iwn_softc *sc, struct iwn_rx_desc *desc, 3159 struct iwn_rx_data *data) 3160 { 3161 struct iwn_ops *ops = &sc->ops; 3162 struct iwn_node *wn; 3163 struct ieee80211_node *ni; 3164 struct iwn_compressed_ba *ba = (struct iwn_compressed_ba *)(desc + 1); 3165 struct iwn_tx_ring *txq; 3166 struct iwn_tx_data *txdata; 3167 struct ieee80211_tx_ampdu *tap; 3168 struct mbuf *m; 3169 uint64_t bitmap; 3170 uint16_t ssn; 3171 uint8_t tid; 3172 int ackfailcnt = 0, i, lastidx, qid, *res, shift; 3173 int tx_ok = 0, tx_err = 0; 3174 3175 DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT, "->%s begin\n", __func__); 3176 3177 bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD); 3178 3179 qid = le16toh(ba->qid); 3180 txq = &sc->txq[ba->qid]; 3181 tap = sc->qid2tap[ba->qid]; 3182 tid = tap->txa_tid; 3183 wn = (void *)tap->txa_ni; 3184 3185 res = NULL; 3186 ssn = 0; 3187 if (!IEEE80211_AMPDU_RUNNING(tap)) { 3188 res = tap->txa_private; 3189 ssn = tap->txa_start & 0xfff; 3190 } 3191 3192 for (lastidx = le16toh(ba->ssn) & 0xff; txq->read != lastidx;) { 3193 txdata = &txq->data[txq->read]; 3194 3195 /* Unmap and free mbuf. */ 3196 bus_dmamap_sync(txq->data_dmat, txdata->map, 3197 BUS_DMASYNC_POSTWRITE); 3198 bus_dmamap_unload(txq->data_dmat, txdata->map); 3199 m = txdata->m, txdata->m = NULL; 3200 ni = txdata->ni, txdata->ni = NULL; 3201 3202 KASSERT(ni != NULL, ("no node")); 3203 KASSERT(m != NULL, ("no mbuf")); 3204 3205 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: freeing m=%p\n", __func__, m); 3206 ieee80211_tx_complete(ni, m, 1); 3207 3208 txq->queued--; 3209 txq->read = (txq->read + 1) % IWN_TX_RING_COUNT; 3210 } 3211 3212 if (txq->queued == 0 && res != NULL) { 3213 iwn_nic_lock(sc); 3214 ops->ampdu_tx_stop(sc, qid, tid, ssn); 3215 iwn_nic_unlock(sc); 3216 sc->qid2tap[qid] = NULL; 3217 free(res, M_DEVBUF); 3218 return; 3219 } 3220 3221 if (wn->agg[tid].bitmap == 0) 3222 return; 3223 3224 shift = wn->agg[tid].startidx - ((le16toh(ba->seq) >> 4) & 0xff); 3225 if (shift < 0) 3226 shift += 0x100; 3227 3228 if (wn->agg[tid].nframes > (64 - shift)) 3229 return; 3230 3231 /* 3232 * Walk the bitmap and calculate how many successful and failed 3233 * attempts are made. 3234 * 3235 * Yes, the rate control code doesn't know these are A-MPDU 3236 * subframes and that it's okay to fail some of these. 3237 */ 3238 ni = tap->txa_ni; 3239 bitmap = (le64toh(ba->bitmap) >> shift) & wn->agg[tid].bitmap; 3240 for (i = 0; bitmap; i++) { 3241 if ((bitmap & 1) == 0) { 3242 tx_err ++; 3243 ieee80211_ratectl_tx_complete(ni->ni_vap, ni, 3244 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 3245 } else { 3246 tx_ok ++; 3247 ieee80211_ratectl_tx_complete(ni->ni_vap, ni, 3248 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 3249 } 3250 bitmap >>= 1; 3251 } 3252 3253 DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT, 3254 "->%s: end; %d ok; %d err\n",__func__, tx_ok, tx_err); 3255 3256 } 3257 3258 /* 3259 * Process a CALIBRATION_RESULT notification sent by the initialization 3260 * firmware on response to a CMD_CALIB_CONFIG command (5000 only). 3261 */ 3262 static void 3263 iwn5000_rx_calib_results(struct iwn_softc *sc, struct iwn_rx_desc *desc, 3264 struct iwn_rx_data *data) 3265 { 3266 struct iwn_phy_calib *calib = (struct iwn_phy_calib *)(desc + 1); 3267 int len, idx = -1; 3268 3269 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 3270 3271 /* Runtime firmware should not send such a notification. */ 3272 if (sc->sc_flags & IWN_FLAG_CALIB_DONE){ 3273 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s received after clib done\n", 3274 __func__); 3275 return; 3276 } 3277 len = (le32toh(desc->len) & 0x3fff) - 4; 3278 bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD); 3279 3280 switch (calib->code) { 3281 case IWN5000_PHY_CALIB_DC: 3282 if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_DC) 3283 idx = 0; 3284 break; 3285 case IWN5000_PHY_CALIB_LO: 3286 if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_LO) 3287 idx = 1; 3288 break; 3289 case IWN5000_PHY_CALIB_TX_IQ: 3290 if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TX_IQ) 3291 idx = 2; 3292 break; 3293 case IWN5000_PHY_CALIB_TX_IQ_PERIODIC: 3294 if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_TX_IQ_PERIODIC) 3295 idx = 3; 3296 break; 3297 case IWN5000_PHY_CALIB_BASE_BAND: 3298 if (sc->base_params->calib_need & IWN_FLG_NEED_PHY_CALIB_BASE_BAND) 3299 idx = 4; 3300 break; 3301 } 3302 if (idx == -1) /* Ignore other results. */ 3303 return; 3304 3305 /* Save calibration result. */ 3306 if (sc->calibcmd[idx].buf != NULL) 3307 free(sc->calibcmd[idx].buf, M_DEVBUF); 3308 sc->calibcmd[idx].buf = malloc(len, M_DEVBUF, M_NOWAIT); 3309 if (sc->calibcmd[idx].buf == NULL) { 3310 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 3311 "not enough memory for calibration result %d\n", 3312 calib->code); 3313 return; 3314 } 3315 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 3316 "saving calibration result idx=%d, code=%d len=%d\n", idx, calib->code, len); 3317 sc->calibcmd[idx].len = len; 3318 memcpy(sc->calibcmd[idx].buf, calib, len); 3319 } 3320 3321 static void 3322 iwn_stats_update(struct iwn_softc *sc, struct iwn_calib_state *calib, 3323 struct iwn_stats *stats, int len) 3324 { 3325 struct iwn_stats_bt *stats_bt; 3326 struct iwn_stats *lstats; 3327 3328 /* 3329 * First - check whether the length is the bluetooth or normal. 3330 * 3331 * If it's normal - just copy it and bump out. 3332 * Otherwise we have to convert things. 3333 */ 3334 3335 if (len == sizeof(struct iwn_stats) + 4) { 3336 memcpy(&sc->last_stat, stats, sizeof(struct iwn_stats)); 3337 sc->last_stat_valid = 1; 3338 return; 3339 } 3340 3341 /* 3342 * If it's not the bluetooth size - log, then just copy. 3343 */ 3344 if (len != sizeof(struct iwn_stats_bt) + 4) { 3345 DPRINTF(sc, IWN_DEBUG_STATS, 3346 "%s: size of rx statistics (%d) not an expected size!\n", 3347 __func__, 3348 len); 3349 memcpy(&sc->last_stat, stats, sizeof(struct iwn_stats)); 3350 sc->last_stat_valid = 1; 3351 return; 3352 } 3353 3354 /* 3355 * Ok. Time to copy. 3356 */ 3357 stats_bt = (struct iwn_stats_bt *) stats; 3358 lstats = &sc->last_stat; 3359 3360 /* flags */ 3361 lstats->flags = stats_bt->flags; 3362 /* rx_bt */ 3363 memcpy(&lstats->rx.ofdm, &stats_bt->rx_bt.ofdm, 3364 sizeof(struct iwn_rx_phy_stats)); 3365 memcpy(&lstats->rx.cck, &stats_bt->rx_bt.cck, 3366 sizeof(struct iwn_rx_phy_stats)); 3367 memcpy(&lstats->rx.general, &stats_bt->rx_bt.general_bt.common, 3368 sizeof(struct iwn_rx_general_stats)); 3369 memcpy(&lstats->rx.ht, &stats_bt->rx_bt.ht, 3370 sizeof(struct iwn_rx_ht_phy_stats)); 3371 /* tx */ 3372 memcpy(&lstats->tx, &stats_bt->tx, 3373 sizeof(struct iwn_tx_stats)); 3374 /* general */ 3375 memcpy(&lstats->general, &stats_bt->general, 3376 sizeof(struct iwn_general_stats)); 3377 3378 /* XXX TODO: Squirrel away the extra bluetooth stats somewhere */ 3379 sc->last_stat_valid = 1; 3380 } 3381 3382 /* 3383 * Process an RX_STATISTICS or BEACON_STATISTICS firmware notification. 3384 * The latter is sent by the firmware after each received beacon. 3385 */ 3386 static void 3387 iwn_rx_statistics(struct iwn_softc *sc, struct iwn_rx_desc *desc, 3388 struct iwn_rx_data *data) 3389 { 3390 struct iwn_ops *ops = &sc->ops; 3391 struct ieee80211com *ic = &sc->sc_ic; 3392 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3393 struct iwn_calib_state *calib = &sc->calib; 3394 struct iwn_stats *stats = (struct iwn_stats *)(desc + 1); 3395 struct iwn_stats *lstats; 3396 int temp; 3397 3398 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 3399 3400 /* Ignore statistics received during a scan. */ 3401 if (vap->iv_state != IEEE80211_S_RUN || 3402 (ic->ic_flags & IEEE80211_F_SCAN)){ 3403 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s received during calib\n", 3404 __func__); 3405 return; 3406 } 3407 3408 bus_dmamap_sync(sc->rxq.data_dmat, data->map, BUS_DMASYNC_POSTREAD); 3409 3410 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_STATS, 3411 "%s: received statistics, cmd %d, len %d\n", 3412 __func__, desc->type, le16toh(desc->len)); 3413 sc->calib_cnt = 0; /* Reset TX power calibration timeout. */ 3414 3415 /* 3416 * Collect/track general statistics for reporting. 3417 * 3418 * This takes care of ensuring that the bluetooth sized message 3419 * will be correctly converted to the legacy sized message. 3420 */ 3421 iwn_stats_update(sc, calib, stats, le16toh(desc->len)); 3422 3423 /* 3424 * And now, let's take a reference of it to use! 3425 */ 3426 lstats = &sc->last_stat; 3427 3428 /* Test if temperature has changed. */ 3429 if (lstats->general.temp != sc->rawtemp) { 3430 /* Convert "raw" temperature to degC. */ 3431 sc->rawtemp = stats->general.temp; 3432 temp = ops->get_temperature(sc); 3433 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d\n", 3434 __func__, temp); 3435 3436 /* Update TX power if need be (4965AGN only). */ 3437 if (sc->hw_type == IWN_HW_REV_TYPE_4965) 3438 iwn4965_power_calibration(sc, temp); 3439 } 3440 3441 if (desc->type != IWN_BEACON_STATISTICS) 3442 return; /* Reply to a statistics request. */ 3443 3444 sc->noise = iwn_get_noise(&lstats->rx.general); 3445 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: noise %d\n", __func__, sc->noise); 3446 3447 /* Test that RSSI and noise are present in stats report. */ 3448 if (le32toh(lstats->rx.general.flags) != 1) { 3449 DPRINTF(sc, IWN_DEBUG_ANY, "%s\n", 3450 "received statistics without RSSI"); 3451 return; 3452 } 3453 3454 if (calib->state == IWN_CALIB_STATE_ASSOC) 3455 iwn_collect_noise(sc, &lstats->rx.general); 3456 else if (calib->state == IWN_CALIB_STATE_RUN) { 3457 iwn_tune_sensitivity(sc, &lstats->rx); 3458 /* 3459 * XXX TODO: Only run the RX recovery if we're associated! 3460 */ 3461 iwn_check_rx_recovery(sc, lstats); 3462 iwn_save_stats_counters(sc, lstats); 3463 } 3464 3465 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 3466 } 3467 3468 /* 3469 * Save the relevant statistic counters for the next calibration 3470 * pass. 3471 */ 3472 static void 3473 iwn_save_stats_counters(struct iwn_softc *sc, const struct iwn_stats *rs) 3474 { 3475 struct iwn_calib_state *calib = &sc->calib; 3476 3477 /* Save counters values for next call. */ 3478 calib->bad_plcp_cck = le32toh(rs->rx.cck.bad_plcp); 3479 calib->fa_cck = le32toh(rs->rx.cck.fa); 3480 calib->bad_plcp_ht = le32toh(rs->rx.ht.bad_plcp); 3481 calib->bad_plcp_ofdm = le32toh(rs->rx.ofdm.bad_plcp); 3482 calib->fa_ofdm = le32toh(rs->rx.ofdm.fa); 3483 3484 /* Last time we received these tick values */ 3485 sc->last_calib_ticks = ticks; 3486 } 3487 3488 /* 3489 * Process a TX_DONE firmware notification. Unfortunately, the 4965AGN 3490 * and 5000 adapters have different incompatible TX status formats. 3491 */ 3492 static void 3493 iwn4965_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc, 3494 struct iwn_rx_data *data) 3495 { 3496 struct iwn4965_tx_stat *stat = (struct iwn4965_tx_stat *)(desc + 1); 3497 struct iwn_tx_ring *ring; 3498 int qid; 3499 3500 qid = desc->qid & 0xf; 3501 ring = &sc->txq[qid]; 3502 3503 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: " 3504 "qid %d idx %d RTS retries %d ACK retries %d nkill %d rate %x duration %d status %x\n", 3505 __func__, desc->qid, desc->idx, 3506 stat->rtsfailcnt, 3507 stat->ackfailcnt, 3508 stat->btkillcnt, 3509 stat->rate, le16toh(stat->duration), 3510 le32toh(stat->status)); 3511 3512 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 3513 if (qid >= sc->firstaggqueue) { 3514 iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes, 3515 stat->ackfailcnt, &stat->status); 3516 } else { 3517 iwn_tx_done(sc, desc, stat->ackfailcnt, 3518 le32toh(stat->status) & 0xff); 3519 } 3520 } 3521 3522 static void 3523 iwn5000_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc, 3524 struct iwn_rx_data *data) 3525 { 3526 struct iwn5000_tx_stat *stat = (struct iwn5000_tx_stat *)(desc + 1); 3527 struct iwn_tx_ring *ring; 3528 int qid; 3529 3530 qid = desc->qid & 0xf; 3531 ring = &sc->txq[qid]; 3532 3533 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: " 3534 "qid %d idx %d RTS retries %d ACK retries %d nkill %d rate %x duration %d status %x\n", 3535 __func__, desc->qid, desc->idx, 3536 stat->rtsfailcnt, 3537 stat->ackfailcnt, 3538 stat->btkillcnt, 3539 stat->rate, le16toh(stat->duration), 3540 le32toh(stat->status)); 3541 3542 #ifdef notyet 3543 /* Reset TX scheduler slot. */ 3544 iwn5000_reset_sched(sc, desc->qid & 0xf, desc->idx); 3545 #endif 3546 3547 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTREAD); 3548 if (qid >= sc->firstaggqueue) { 3549 iwn_ampdu_tx_done(sc, qid, desc->idx, stat->nframes, 3550 stat->ackfailcnt, &stat->status); 3551 } else { 3552 iwn_tx_done(sc, desc, stat->ackfailcnt, 3553 le16toh(stat->status) & 0xff); 3554 } 3555 } 3556 3557 /* 3558 * Adapter-independent backend for TX_DONE firmware notifications. 3559 */ 3560 static void 3561 iwn_tx_done(struct iwn_softc *sc, struct iwn_rx_desc *desc, int ackfailcnt, 3562 uint8_t status) 3563 { 3564 struct iwn_tx_ring *ring = &sc->txq[desc->qid & 0xf]; 3565 struct iwn_tx_data *data = &ring->data[desc->idx]; 3566 struct mbuf *m; 3567 struct ieee80211_node *ni; 3568 struct ieee80211vap *vap; 3569 3570 KASSERT(data->ni != NULL, ("no node")); 3571 3572 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 3573 3574 /* Unmap and free mbuf. */ 3575 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 3576 bus_dmamap_unload(ring->data_dmat, data->map); 3577 m = data->m, data->m = NULL; 3578 ni = data->ni, data->ni = NULL; 3579 vap = ni->ni_vap; 3580 3581 /* 3582 * Update rate control statistics for the node. 3583 */ 3584 if (status & IWN_TX_FAIL) 3585 ieee80211_ratectl_tx_complete(vap, ni, 3586 IEEE80211_RATECTL_TX_FAILURE, &ackfailcnt, NULL); 3587 else 3588 ieee80211_ratectl_tx_complete(vap, ni, 3589 IEEE80211_RATECTL_TX_SUCCESS, &ackfailcnt, NULL); 3590 3591 /* 3592 * Channels marked for "radar" require traffic to be received 3593 * to unlock before we can transmit. Until traffic is seen 3594 * any attempt to transmit is returned immediately with status 3595 * set to IWN_TX_FAIL_TX_LOCKED. Unfortunately this can easily 3596 * happen on first authenticate after scanning. To workaround 3597 * this we ignore a failure of this sort in AUTH state so the 3598 * 802.11 layer will fall back to using a timeout to wait for 3599 * the AUTH reply. This allows the firmware time to see 3600 * traffic so a subsequent retry of AUTH succeeds. It's 3601 * unclear why the firmware does not maintain state for 3602 * channels recently visited as this would allow immediate 3603 * use of the channel after a scan (where we see traffic). 3604 */ 3605 if (status == IWN_TX_FAIL_TX_LOCKED && 3606 ni->ni_vap->iv_state == IEEE80211_S_AUTH) 3607 ieee80211_tx_complete(ni, m, 0); 3608 else 3609 ieee80211_tx_complete(ni, m, 3610 (status & IWN_TX_FAIL) != 0); 3611 3612 sc->sc_tx_timer = 0; 3613 if (--ring->queued < IWN_TX_RING_LOMARK) 3614 sc->qfullmsk &= ~(1 << ring->qid); 3615 3616 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 3617 } 3618 3619 /* 3620 * Process a "command done" firmware notification. This is where we wakeup 3621 * processes waiting for a synchronous command completion. 3622 */ 3623 static void 3624 iwn_cmd_done(struct iwn_softc *sc, struct iwn_rx_desc *desc) 3625 { 3626 struct iwn_tx_ring *ring; 3627 struct iwn_tx_data *data; 3628 int cmd_queue_num; 3629 3630 if (sc->sc_flags & IWN_FLAG_PAN_SUPPORT) 3631 cmd_queue_num = IWN_PAN_CMD_QUEUE; 3632 else 3633 cmd_queue_num = IWN_CMD_QUEUE_NUM; 3634 3635 if ((desc->qid & IWN_RX_DESC_QID_MSK) != cmd_queue_num) 3636 return; /* Not a command ack. */ 3637 3638 ring = &sc->txq[cmd_queue_num]; 3639 data = &ring->data[desc->idx]; 3640 3641 /* If the command was mapped in an mbuf, free it. */ 3642 if (data->m != NULL) { 3643 bus_dmamap_sync(ring->data_dmat, data->map, 3644 BUS_DMASYNC_POSTWRITE); 3645 bus_dmamap_unload(ring->data_dmat, data->map); 3646 m_freem(data->m); 3647 data->m = NULL; 3648 } 3649 wakeup(&ring->desc[desc->idx]); 3650 } 3651 3652 static void 3653 iwn_ampdu_tx_done(struct iwn_softc *sc, int qid, int idx, int nframes, 3654 int ackfailcnt, void *stat) 3655 { 3656 struct iwn_ops *ops = &sc->ops; 3657 struct iwn_tx_ring *ring = &sc->txq[qid]; 3658 struct iwn_tx_data *data; 3659 struct mbuf *m; 3660 struct iwn_node *wn; 3661 struct ieee80211_node *ni; 3662 struct ieee80211_tx_ampdu *tap; 3663 uint64_t bitmap; 3664 uint32_t *status = stat; 3665 uint16_t *aggstatus = stat; 3666 uint16_t ssn; 3667 uint8_t tid; 3668 int bit, i, lastidx, *res, seqno, shift, start; 3669 3670 /* XXX TODO: status is le16 field! Grr */ 3671 3672 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 3673 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: nframes=%d, status=0x%08x\n", 3674 __func__, 3675 nframes, 3676 *status); 3677 3678 tap = sc->qid2tap[qid]; 3679 tid = tap->txa_tid; 3680 wn = (void *)tap->txa_ni; 3681 ni = tap->txa_ni; 3682 3683 /* 3684 * XXX TODO: ACK and RTS failures would be nice here! 3685 */ 3686 3687 /* 3688 * A-MPDU single frame status - if we failed to transmit it 3689 * in A-MPDU, then it may be a permanent failure. 3690 * 3691 * XXX TODO: check what the Linux iwlwifi driver does here; 3692 * there's some permanent and temporary failures that may be 3693 * handled differently. 3694 */ 3695 if (nframes == 1) { 3696 if ((*status & 0xff) != 1 && (*status & 0xff) != 2) { 3697 #ifdef NOT_YET 3698 printf("ieee80211_send_bar()\n"); 3699 #endif 3700 /* 3701 * If we completely fail a transmit, make sure a 3702 * notification is pushed up to the rate control 3703 * layer. 3704 */ 3705 ieee80211_ratectl_tx_complete(ni->ni_vap, 3706 ni, 3707 IEEE80211_RATECTL_TX_FAILURE, 3708 &ackfailcnt, 3709 NULL); 3710 } else { 3711 /* 3712 * If nframes=1, then we won't be getting a BA for 3713 * this frame. Ensure that we correctly update the 3714 * rate control code with how many retries were 3715 * needed to send it. 3716 */ 3717 ieee80211_ratectl_tx_complete(ni->ni_vap, 3718 ni, 3719 IEEE80211_RATECTL_TX_SUCCESS, 3720 &ackfailcnt, 3721 NULL); 3722 } 3723 } 3724 3725 bitmap = 0; 3726 start = idx; 3727 for (i = 0; i < nframes; i++) { 3728 if (le16toh(aggstatus[i * 2]) & 0xc) 3729 continue; 3730 3731 idx = le16toh(aggstatus[2*i + 1]) & 0xff; 3732 bit = idx - start; 3733 shift = 0; 3734 if (bit >= 64) { 3735 shift = 0x100 - idx + start; 3736 bit = 0; 3737 start = idx; 3738 } else if (bit <= -64) 3739 bit = 0x100 - start + idx; 3740 else if (bit < 0) { 3741 shift = start - idx; 3742 start = idx; 3743 bit = 0; 3744 } 3745 bitmap = bitmap << shift; 3746 bitmap |= 1ULL << bit; 3747 } 3748 tap = sc->qid2tap[qid]; 3749 tid = tap->txa_tid; 3750 wn = (void *)tap->txa_ni; 3751 wn->agg[tid].bitmap = bitmap; 3752 wn->agg[tid].startidx = start; 3753 wn->agg[tid].nframes = nframes; 3754 3755 res = NULL; 3756 ssn = 0; 3757 if (!IEEE80211_AMPDU_RUNNING(tap)) { 3758 res = tap->txa_private; 3759 ssn = tap->txa_start & 0xfff; 3760 } 3761 3762 /* This is going nframes DWORDS into the descriptor? */ 3763 seqno = le32toh(*(status + nframes)) & 0xfff; 3764 for (lastidx = (seqno & 0xff); ring->read != lastidx;) { 3765 data = &ring->data[ring->read]; 3766 3767 /* Unmap and free mbuf. */ 3768 bus_dmamap_sync(ring->data_dmat, data->map, 3769 BUS_DMASYNC_POSTWRITE); 3770 bus_dmamap_unload(ring->data_dmat, data->map); 3771 m = data->m, data->m = NULL; 3772 ni = data->ni, data->ni = NULL; 3773 3774 KASSERT(ni != NULL, ("no node")); 3775 KASSERT(m != NULL, ("no mbuf")); 3776 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: freeing m=%p\n", __func__, m); 3777 ieee80211_tx_complete(ni, m, 1); 3778 3779 ring->queued--; 3780 ring->read = (ring->read + 1) % IWN_TX_RING_COUNT; 3781 } 3782 3783 if (ring->queued == 0 && res != NULL) { 3784 iwn_nic_lock(sc); 3785 ops->ampdu_tx_stop(sc, qid, tid, ssn); 3786 iwn_nic_unlock(sc); 3787 sc->qid2tap[qid] = NULL; 3788 free(res, M_DEVBUF); 3789 return; 3790 } 3791 3792 sc->sc_tx_timer = 0; 3793 if (ring->queued < IWN_TX_RING_LOMARK) 3794 sc->qfullmsk &= ~(1 << ring->qid); 3795 3796 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 3797 } 3798 3799 /* 3800 * Process an INT_FH_RX or INT_SW_RX interrupt. 3801 */ 3802 static void 3803 iwn_notif_intr(struct iwn_softc *sc) 3804 { 3805 struct iwn_ops *ops = &sc->ops; 3806 struct ieee80211com *ic = &sc->sc_ic; 3807 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3808 uint16_t hw; 3809 3810 bus_dmamap_sync(sc->rxq.stat_dma.tag, sc->rxq.stat_dma.map, 3811 BUS_DMASYNC_POSTREAD); 3812 3813 hw = le16toh(sc->rxq.stat->closed_count) & 0xfff; 3814 while (sc->rxq.cur != hw) { 3815 struct iwn_rx_data *data = &sc->rxq.data[sc->rxq.cur]; 3816 struct iwn_rx_desc *desc; 3817 3818 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 3819 BUS_DMASYNC_POSTREAD); 3820 desc = mtod(data->m, struct iwn_rx_desc *); 3821 3822 DPRINTF(sc, IWN_DEBUG_RECV, 3823 "%s: cur=%d; qid %x idx %d flags %x type %d(%s) len %d\n", 3824 __func__, sc->rxq.cur, desc->qid & 0xf, desc->idx, desc->flags, 3825 desc->type, iwn_intr_str(desc->type), 3826 le16toh(desc->len)); 3827 3828 if (!(desc->qid & IWN_UNSOLICITED_RX_NOTIF)) /* Reply to a command. */ 3829 iwn_cmd_done(sc, desc); 3830 3831 switch (desc->type) { 3832 case IWN_RX_PHY: 3833 iwn_rx_phy(sc, desc, data); 3834 break; 3835 3836 case IWN_RX_DONE: /* 4965AGN only. */ 3837 case IWN_MPDU_RX_DONE: 3838 /* An 802.11 frame has been received. */ 3839 iwn_rx_done(sc, desc, data); 3840 break; 3841 3842 case IWN_RX_COMPRESSED_BA: 3843 /* A Compressed BlockAck has been received. */ 3844 iwn_rx_compressed_ba(sc, desc, data); 3845 break; 3846 3847 case IWN_TX_DONE: 3848 /* An 802.11 frame has been transmitted. */ 3849 ops->tx_done(sc, desc, data); 3850 break; 3851 3852 case IWN_RX_STATISTICS: 3853 case IWN_BEACON_STATISTICS: 3854 iwn_rx_statistics(sc, desc, data); 3855 break; 3856 3857 case IWN_BEACON_MISSED: 3858 { 3859 struct iwn_beacon_missed *miss = 3860 (struct iwn_beacon_missed *)(desc + 1); 3861 int misses; 3862 3863 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 3864 BUS_DMASYNC_POSTREAD); 3865 misses = le32toh(miss->consecutive); 3866 3867 DPRINTF(sc, IWN_DEBUG_STATE, 3868 "%s: beacons missed %d/%d\n", __func__, 3869 misses, le32toh(miss->total)); 3870 /* 3871 * If more than 5 consecutive beacons are missed, 3872 * reinitialize the sensitivity state machine. 3873 */ 3874 if (vap->iv_state == IEEE80211_S_RUN && 3875 (ic->ic_flags & IEEE80211_F_SCAN) == 0) { 3876 if (misses > 5) 3877 (void)iwn_init_sensitivity(sc); 3878 if (misses >= vap->iv_bmissthreshold) { 3879 IWN_UNLOCK(sc); 3880 ieee80211_beacon_miss(ic); 3881 IWN_LOCK(sc); 3882 } 3883 } 3884 break; 3885 } 3886 case IWN_UC_READY: 3887 { 3888 struct iwn_ucode_info *uc = 3889 (struct iwn_ucode_info *)(desc + 1); 3890 3891 /* The microcontroller is ready. */ 3892 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 3893 BUS_DMASYNC_POSTREAD); 3894 DPRINTF(sc, IWN_DEBUG_RESET, 3895 "microcode alive notification version=%d.%d " 3896 "subtype=%x alive=%x\n", uc->major, uc->minor, 3897 uc->subtype, le32toh(uc->valid)); 3898 3899 if (le32toh(uc->valid) != 1) { 3900 device_printf(sc->sc_dev, 3901 "microcontroller initialization failed"); 3902 break; 3903 } 3904 if (uc->subtype == IWN_UCODE_INIT) { 3905 /* Save microcontroller report. */ 3906 memcpy(&sc->ucode_info, uc, sizeof (*uc)); 3907 } 3908 /* Save the address of the error log in SRAM. */ 3909 sc->errptr = le32toh(uc->errptr); 3910 break; 3911 } 3912 case IWN_STATE_CHANGED: 3913 { 3914 /* 3915 * State change allows hardware switch change to be 3916 * noted. However, we handle this in iwn_intr as we 3917 * get both the enable/disble intr. 3918 */ 3919 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 3920 BUS_DMASYNC_POSTREAD); 3921 #ifdef IWN_DEBUG 3922 uint32_t *status = (uint32_t *)(desc + 1); 3923 DPRINTF(sc, IWN_DEBUG_INTR | IWN_DEBUG_STATE, 3924 "state changed to %x\n", 3925 le32toh(*status)); 3926 #endif 3927 break; 3928 } 3929 case IWN_START_SCAN: 3930 { 3931 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 3932 BUS_DMASYNC_POSTREAD); 3933 #ifdef IWN_DEBUG 3934 struct iwn_start_scan *scan = 3935 (struct iwn_start_scan *)(desc + 1); 3936 DPRINTF(sc, IWN_DEBUG_ANY, 3937 "%s: scanning channel %d status %x\n", 3938 __func__, scan->chan, le32toh(scan->status)); 3939 #endif 3940 break; 3941 } 3942 case IWN_STOP_SCAN: 3943 { 3944 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 3945 BUS_DMASYNC_POSTREAD); 3946 #ifdef IWN_DEBUG 3947 struct iwn_stop_scan *scan = 3948 (struct iwn_stop_scan *)(desc + 1); 3949 DPRINTF(sc, IWN_DEBUG_STATE | IWN_DEBUG_SCAN, 3950 "scan finished nchan=%d status=%d chan=%d\n", 3951 scan->nchan, scan->status, scan->chan); 3952 #endif 3953 sc->sc_is_scanning = 0; 3954 callout_stop(&sc->scan_timeout); 3955 IWN_UNLOCK(sc); 3956 ieee80211_scan_next(vap); 3957 IWN_LOCK(sc); 3958 break; 3959 } 3960 case IWN5000_CALIBRATION_RESULT: 3961 iwn5000_rx_calib_results(sc, desc, data); 3962 break; 3963 3964 case IWN5000_CALIBRATION_DONE: 3965 sc->sc_flags |= IWN_FLAG_CALIB_DONE; 3966 wakeup(sc); 3967 break; 3968 } 3969 3970 sc->rxq.cur = (sc->rxq.cur + 1) % IWN_RX_RING_COUNT; 3971 } 3972 3973 /* Tell the firmware what we have processed. */ 3974 hw = (hw == 0) ? IWN_RX_RING_COUNT - 1 : hw - 1; 3975 IWN_WRITE(sc, IWN_FH_RX_WPTR, hw & ~7); 3976 } 3977 3978 /* 3979 * Process an INT_WAKEUP interrupt raised when the microcontroller wakes up 3980 * from power-down sleep mode. 3981 */ 3982 static void 3983 iwn_wakeup_intr(struct iwn_softc *sc) 3984 { 3985 int qid; 3986 3987 DPRINTF(sc, IWN_DEBUG_RESET, "%s: ucode wakeup from power-down sleep\n", 3988 __func__); 3989 3990 /* Wakeup RX and TX rings. */ 3991 IWN_WRITE(sc, IWN_FH_RX_WPTR, sc->rxq.cur & ~7); 3992 for (qid = 0; qid < sc->ntxqs; qid++) { 3993 struct iwn_tx_ring *ring = &sc->txq[qid]; 3994 IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, qid << 8 | ring->cur); 3995 } 3996 } 3997 3998 static void 3999 iwn_rftoggle_intr(struct iwn_softc *sc) 4000 { 4001 struct ieee80211com *ic = &sc->sc_ic; 4002 uint32_t tmp = IWN_READ(sc, IWN_GP_CNTRL); 4003 4004 IWN_LOCK_ASSERT(sc); 4005 4006 device_printf(sc->sc_dev, "RF switch: radio %s\n", 4007 (tmp & IWN_GP_CNTRL_RFKILL) ? "enabled" : "disabled"); 4008 if (tmp & IWN_GP_CNTRL_RFKILL) 4009 ieee80211_runtask(ic, &sc->sc_radioon_task); 4010 else 4011 ieee80211_runtask(ic, &sc->sc_radiooff_task); 4012 } 4013 4014 /* 4015 * Dump the error log of the firmware when a firmware panic occurs. Although 4016 * we can't debug the firmware because it is neither open source nor free, it 4017 * can help us to identify certain classes of problems. 4018 */ 4019 static void 4020 iwn_fatal_intr(struct iwn_softc *sc) 4021 { 4022 struct iwn_fw_dump dump; 4023 int i; 4024 4025 IWN_LOCK_ASSERT(sc); 4026 4027 /* Force a complete recalibration on next init. */ 4028 sc->sc_flags &= ~IWN_FLAG_CALIB_DONE; 4029 4030 /* Check that the error log address is valid. */ 4031 if (sc->errptr < IWN_FW_DATA_BASE || 4032 sc->errptr + sizeof (dump) > 4033 IWN_FW_DATA_BASE + sc->fw_data_maxsz) { 4034 printf("%s: bad firmware error log address 0x%08x\n", __func__, 4035 sc->errptr); 4036 return; 4037 } 4038 if (iwn_nic_lock(sc) != 0) { 4039 printf("%s: could not read firmware error log\n", __func__); 4040 return; 4041 } 4042 /* Read firmware error log from SRAM. */ 4043 iwn_mem_read_region_4(sc, sc->errptr, (uint32_t *)&dump, 4044 sizeof (dump) / sizeof (uint32_t)); 4045 iwn_nic_unlock(sc); 4046 4047 if (dump.valid == 0) { 4048 printf("%s: firmware error log is empty\n", __func__); 4049 return; 4050 } 4051 printf("firmware error log:\n"); 4052 printf(" error type = \"%s\" (0x%08X)\n", 4053 (dump.id < nitems(iwn_fw_errmsg)) ? 4054 iwn_fw_errmsg[dump.id] : "UNKNOWN", 4055 dump.id); 4056 printf(" program counter = 0x%08X\n", dump.pc); 4057 printf(" source line = 0x%08X\n", dump.src_line); 4058 printf(" error data = 0x%08X%08X\n", 4059 dump.error_data[0], dump.error_data[1]); 4060 printf(" branch link = 0x%08X%08X\n", 4061 dump.branch_link[0], dump.branch_link[1]); 4062 printf(" interrupt link = 0x%08X%08X\n", 4063 dump.interrupt_link[0], dump.interrupt_link[1]); 4064 printf(" time = %u\n", dump.time[0]); 4065 4066 /* Dump driver status (TX and RX rings) while we're here. */ 4067 printf("driver status:\n"); 4068 for (i = 0; i < sc->ntxqs; i++) { 4069 struct iwn_tx_ring *ring = &sc->txq[i]; 4070 printf(" tx ring %2d: qid=%-2d cur=%-3d queued=%-3d\n", 4071 i, ring->qid, ring->cur, ring->queued); 4072 } 4073 printf(" rx ring: cur=%d\n", sc->rxq.cur); 4074 } 4075 4076 static void 4077 iwn_intr(void *arg) 4078 { 4079 struct iwn_softc *sc = arg; 4080 uint32_t r1, r2, tmp; 4081 4082 IWN_LOCK(sc); 4083 4084 /* Disable interrupts. */ 4085 IWN_WRITE(sc, IWN_INT_MASK, 0); 4086 4087 /* Read interrupts from ICT (fast) or from registers (slow). */ 4088 if (sc->sc_flags & IWN_FLAG_USE_ICT) { 4089 bus_dmamap_sync(sc->ict_dma.tag, sc->ict_dma.map, 4090 BUS_DMASYNC_POSTREAD); 4091 tmp = 0; 4092 while (sc->ict[sc->ict_cur] != 0) { 4093 tmp |= sc->ict[sc->ict_cur]; 4094 sc->ict[sc->ict_cur] = 0; /* Acknowledge. */ 4095 sc->ict_cur = (sc->ict_cur + 1) % IWN_ICT_COUNT; 4096 } 4097 tmp = le32toh(tmp); 4098 if (tmp == 0xffffffff) /* Shouldn't happen. */ 4099 tmp = 0; 4100 else if (tmp & 0xc0000) /* Workaround a HW bug. */ 4101 tmp |= 0x8000; 4102 r1 = (tmp & 0xff00) << 16 | (tmp & 0xff); 4103 r2 = 0; /* Unused. */ 4104 } else { 4105 r1 = IWN_READ(sc, IWN_INT); 4106 if (r1 == 0xffffffff || (r1 & 0xfffffff0) == 0xa5a5a5a0) { 4107 IWN_UNLOCK(sc); 4108 return; /* Hardware gone! */ 4109 } 4110 r2 = IWN_READ(sc, IWN_FH_INT); 4111 } 4112 4113 DPRINTF(sc, IWN_DEBUG_INTR, "interrupt reg1=0x%08x reg2=0x%08x\n" 4114 , r1, r2); 4115 4116 if (r1 == 0 && r2 == 0) 4117 goto done; /* Interrupt not for us. */ 4118 4119 /* Acknowledge interrupts. */ 4120 IWN_WRITE(sc, IWN_INT, r1); 4121 if (!(sc->sc_flags & IWN_FLAG_USE_ICT)) 4122 IWN_WRITE(sc, IWN_FH_INT, r2); 4123 4124 if (r1 & IWN_INT_RF_TOGGLED) { 4125 iwn_rftoggle_intr(sc); 4126 goto done; 4127 } 4128 if (r1 & IWN_INT_CT_REACHED) { 4129 device_printf(sc->sc_dev, "%s: critical temperature reached!\n", 4130 __func__); 4131 } 4132 if (r1 & (IWN_INT_SW_ERR | IWN_INT_HW_ERR)) { 4133 device_printf(sc->sc_dev, "%s: fatal firmware error\n", 4134 __func__); 4135 #ifdef IWN_DEBUG 4136 iwn_debug_register(sc); 4137 #endif 4138 /* Dump firmware error log and stop. */ 4139 iwn_fatal_intr(sc); 4140 4141 taskqueue_enqueue(sc->sc_tq, &sc->sc_panic_task); 4142 goto done; 4143 } 4144 if ((r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX | IWN_INT_RX_PERIODIC)) || 4145 (r2 & IWN_FH_INT_RX)) { 4146 if (sc->sc_flags & IWN_FLAG_USE_ICT) { 4147 if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX)) 4148 IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_RX); 4149 IWN_WRITE_1(sc, IWN_INT_PERIODIC, 4150 IWN_INT_PERIODIC_DIS); 4151 iwn_notif_intr(sc); 4152 if (r1 & (IWN_INT_FH_RX | IWN_INT_SW_RX)) { 4153 IWN_WRITE_1(sc, IWN_INT_PERIODIC, 4154 IWN_INT_PERIODIC_ENA); 4155 } 4156 } else 4157 iwn_notif_intr(sc); 4158 } 4159 4160 if ((r1 & IWN_INT_FH_TX) || (r2 & IWN_FH_INT_TX)) { 4161 if (sc->sc_flags & IWN_FLAG_USE_ICT) 4162 IWN_WRITE(sc, IWN_FH_INT, IWN_FH_INT_TX); 4163 wakeup(sc); /* FH DMA transfer completed. */ 4164 } 4165 4166 if (r1 & IWN_INT_ALIVE) 4167 wakeup(sc); /* Firmware is alive. */ 4168 4169 if (r1 & IWN_INT_WAKEUP) 4170 iwn_wakeup_intr(sc); 4171 4172 done: 4173 /* Re-enable interrupts. */ 4174 if (sc->sc_flags & IWN_FLAG_RUNNING) 4175 IWN_WRITE(sc, IWN_INT_MASK, sc->int_mask); 4176 4177 IWN_UNLOCK(sc); 4178 } 4179 4180 /* 4181 * Update TX scheduler ring when transmitting an 802.11 frame (4965AGN and 4182 * 5000 adapters use a slightly different format). 4183 */ 4184 static void 4185 iwn4965_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id, 4186 uint16_t len) 4187 { 4188 uint16_t *w = &sc->sched[qid * IWN4965_SCHED_COUNT + idx]; 4189 4190 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 4191 4192 *w = htole16(len + 8); 4193 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map, 4194 BUS_DMASYNC_PREWRITE); 4195 if (idx < IWN_SCHED_WINSZ) { 4196 *(w + IWN_TX_RING_COUNT) = *w; 4197 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map, 4198 BUS_DMASYNC_PREWRITE); 4199 } 4200 } 4201 4202 static void 4203 iwn5000_update_sched(struct iwn_softc *sc, int qid, int idx, uint8_t id, 4204 uint16_t len) 4205 { 4206 uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx]; 4207 4208 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 4209 4210 *w = htole16(id << 12 | (len + 8)); 4211 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map, 4212 BUS_DMASYNC_PREWRITE); 4213 if (idx < IWN_SCHED_WINSZ) { 4214 *(w + IWN_TX_RING_COUNT) = *w; 4215 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map, 4216 BUS_DMASYNC_PREWRITE); 4217 } 4218 } 4219 4220 #ifdef notyet 4221 static void 4222 iwn5000_reset_sched(struct iwn_softc *sc, int qid, int idx) 4223 { 4224 uint16_t *w = &sc->sched[qid * IWN5000_SCHED_COUNT + idx]; 4225 4226 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 4227 4228 *w = (*w & htole16(0xf000)) | htole16(1); 4229 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map, 4230 BUS_DMASYNC_PREWRITE); 4231 if (idx < IWN_SCHED_WINSZ) { 4232 *(w + IWN_TX_RING_COUNT) = *w; 4233 bus_dmamap_sync(sc->sched_dma.tag, sc->sched_dma.map, 4234 BUS_DMASYNC_PREWRITE); 4235 } 4236 } 4237 #endif 4238 4239 /* 4240 * Check whether OFDM 11g protection will be enabled for the given rate. 4241 * 4242 * The original driver code only enabled protection for OFDM rates. 4243 * It didn't check to see whether it was operating in 11a or 11bg mode. 4244 */ 4245 static int 4246 iwn_check_rate_needs_protection(struct iwn_softc *sc, 4247 struct ieee80211vap *vap, uint8_t rate) 4248 { 4249 struct ieee80211com *ic = vap->iv_ic; 4250 4251 /* 4252 * Not in 2GHz mode? Then there's no need to enable OFDM 4253 * 11bg protection. 4254 */ 4255 if (! IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 4256 return (0); 4257 } 4258 4259 /* 4260 * 11bg protection not enabled? Then don't use it. 4261 */ 4262 if ((ic->ic_flags & IEEE80211_F_USEPROT) == 0) 4263 return (0); 4264 4265 /* 4266 * If it's an 11n rate - no protection. 4267 * We'll do it via a specific 11n check. 4268 */ 4269 if (rate & IEEE80211_RATE_MCS) { 4270 return (0); 4271 } 4272 4273 /* 4274 * Do a rate table lookup. If the PHY is CCK, 4275 * don't do protection. 4276 */ 4277 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_CCK) 4278 return (0); 4279 4280 /* 4281 * Yup, enable protection. 4282 */ 4283 return (1); 4284 } 4285 4286 /* 4287 * return a value between 0 and IWN_MAX_TX_RETRIES-1 as an index into 4288 * the link quality table that reflects this particular entry. 4289 */ 4290 static int 4291 iwn_tx_rate_to_linkq_offset(struct iwn_softc *sc, struct ieee80211_node *ni, 4292 uint8_t rate) 4293 { 4294 struct ieee80211_rateset *rs; 4295 int is_11n; 4296 int nr; 4297 int i; 4298 uint8_t cmp_rate; 4299 4300 /* 4301 * Figure out if we're using 11n or not here. 4302 */ 4303 if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && ni->ni_htrates.rs_nrates > 0) 4304 is_11n = 1; 4305 else 4306 is_11n = 0; 4307 4308 /* 4309 * Use the correct rate table. 4310 */ 4311 if (is_11n) { 4312 rs = (struct ieee80211_rateset *) &ni->ni_htrates; 4313 nr = ni->ni_htrates.rs_nrates; 4314 } else { 4315 rs = &ni->ni_rates; 4316 nr = rs->rs_nrates; 4317 } 4318 4319 /* 4320 * Find the relevant link quality entry in the table. 4321 */ 4322 for (i = 0; i < nr && i < IWN_MAX_TX_RETRIES - 1 ; i++) { 4323 /* 4324 * The link quality table index starts at 0 == highest 4325 * rate, so we walk the rate table backwards. 4326 */ 4327 cmp_rate = rs->rs_rates[(nr - 1) - i]; 4328 if (rate & IEEE80211_RATE_MCS) 4329 cmp_rate |= IEEE80211_RATE_MCS; 4330 4331 #if 0 4332 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: idx %d: nr=%d, rate=0x%02x, rateentry=0x%02x\n", 4333 __func__, 4334 i, 4335 nr, 4336 rate, 4337 cmp_rate); 4338 #endif 4339 4340 if (cmp_rate == rate) 4341 return (i); 4342 } 4343 4344 /* Failed? Start at the end */ 4345 return (IWN_MAX_TX_RETRIES - 1); 4346 } 4347 4348 static int 4349 iwn_tx_data(struct iwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 4350 { 4351 struct iwn_ops *ops = &sc->ops; 4352 const struct ieee80211_txparam *tp; 4353 struct ieee80211vap *vap = ni->ni_vap; 4354 struct ieee80211com *ic = ni->ni_ic; 4355 struct iwn_node *wn = (void *)ni; 4356 struct iwn_tx_ring *ring; 4357 struct iwn_tx_desc *desc; 4358 struct iwn_tx_data *data; 4359 struct iwn_tx_cmd *cmd; 4360 struct iwn_cmd_data *tx; 4361 struct ieee80211_frame *wh; 4362 struct ieee80211_key *k = NULL; 4363 struct mbuf *m1; 4364 uint32_t flags; 4365 uint16_t qos; 4366 u_int hdrlen; 4367 bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER]; 4368 uint8_t tid, type; 4369 int ac, i, totlen, error, pad, nsegs = 0, rate; 4370 4371 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 4372 4373 IWN_LOCK_ASSERT(sc); 4374 4375 wh = mtod(m, struct ieee80211_frame *); 4376 hdrlen = ieee80211_anyhdrsize(wh); 4377 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 4378 4379 /* Select EDCA Access Category and TX ring for this frame. */ 4380 if (IEEE80211_QOS_HAS_SEQ(wh)) { 4381 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 4382 tid = qos & IEEE80211_QOS_TID; 4383 } else { 4384 qos = 0; 4385 tid = 0; 4386 } 4387 ac = M_WME_GETAC(m); 4388 if (m->m_flags & M_AMPDU_MPDU) { 4389 uint16_t seqno; 4390 struct ieee80211_tx_ampdu *tap = &ni->ni_tx_ampdu[ac]; 4391 4392 if (!IEEE80211_AMPDU_RUNNING(tap)) { 4393 return EINVAL; 4394 } 4395 4396 /* 4397 * Queue this frame to the hardware ring that we've 4398 * negotiated AMPDU TX on. 4399 * 4400 * Note that the sequence number must match the TX slot 4401 * being used! 4402 */ 4403 ac = *(int *)tap->txa_private; 4404 seqno = ni->ni_txseqs[tid]; 4405 *(uint16_t *)wh->i_seq = 4406 htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT); 4407 ring = &sc->txq[ac]; 4408 if ((seqno % 256) != ring->cur) { 4409 device_printf(sc->sc_dev, 4410 "%s: m=%p: seqno (%d) (%d) != ring index (%d) !\n", 4411 __func__, 4412 m, 4413 seqno, 4414 seqno % 256, 4415 ring->cur); 4416 } 4417 ni->ni_txseqs[tid]++; 4418 } 4419 ring = &sc->txq[ac]; 4420 desc = &ring->desc[ring->cur]; 4421 data = &ring->data[ring->cur]; 4422 4423 /* Choose a TX rate index. */ 4424 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 4425 if (type == IEEE80211_FC0_TYPE_MGT) 4426 rate = tp->mgmtrate; 4427 else if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 4428 rate = tp->mcastrate; 4429 else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) 4430 rate = tp->ucastrate; 4431 else if (m->m_flags & M_EAPOL) 4432 rate = tp->mgmtrate; 4433 else { 4434 /* XXX pass pktlen */ 4435 (void) ieee80211_ratectl_rate(ni, NULL, 0); 4436 rate = ni->ni_txrate; 4437 } 4438 4439 /* Encrypt the frame if need be. */ 4440 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 4441 /* Retrieve key for TX. */ 4442 k = ieee80211_crypto_encap(ni, m); 4443 if (k == NULL) { 4444 return ENOBUFS; 4445 } 4446 /* 802.11 header may have moved. */ 4447 wh = mtod(m, struct ieee80211_frame *); 4448 } 4449 totlen = m->m_pkthdr.len; 4450 4451 if (ieee80211_radiotap_active_vap(vap)) { 4452 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap; 4453 4454 tap->wt_flags = 0; 4455 tap->wt_rate = rate; 4456 if (k != NULL) 4457 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP; 4458 4459 ieee80211_radiotap_tx(vap, m); 4460 } 4461 4462 /* Prepare TX firmware command. */ 4463 cmd = &ring->cmd[ring->cur]; 4464 cmd->code = IWN_CMD_TX_DATA; 4465 cmd->flags = 0; 4466 cmd->qid = ring->qid; 4467 cmd->idx = ring->cur; 4468 4469 tx = (struct iwn_cmd_data *)cmd->data; 4470 /* NB: No need to clear tx, all fields are reinitialized here. */ 4471 tx->scratch = 0; /* clear "scratch" area */ 4472 4473 flags = 0; 4474 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 4475 /* Unicast frame, check if an ACK is expected. */ 4476 if (!qos || (qos & IEEE80211_QOS_ACKPOLICY) != 4477 IEEE80211_QOS_ACKPOLICY_NOACK) 4478 flags |= IWN_TX_NEED_ACK; 4479 } 4480 if ((wh->i_fc[0] & 4481 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 4482 (IEEE80211_FC0_TYPE_CTL | IEEE80211_FC0_SUBTYPE_BAR)) 4483 flags |= IWN_TX_IMM_BA; /* Cannot happen yet. */ 4484 4485 if (wh->i_fc[1] & IEEE80211_FC1_MORE_FRAG) 4486 flags |= IWN_TX_MORE_FRAG; /* Cannot happen yet. */ 4487 4488 /* Check if frame must be protected using RTS/CTS or CTS-to-self. */ 4489 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 4490 /* NB: Group frames are sent using CCK in 802.11b/g. */ 4491 if (totlen + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) { 4492 flags |= IWN_TX_NEED_RTS; 4493 } else if (iwn_check_rate_needs_protection(sc, vap, rate)) { 4494 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) 4495 flags |= IWN_TX_NEED_CTS; 4496 else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) 4497 flags |= IWN_TX_NEED_RTS; 4498 } else if ((rate & IEEE80211_RATE_MCS) && 4499 (ic->ic_htprotmode == IEEE80211_PROT_RTSCTS)) { 4500 flags |= IWN_TX_NEED_RTS; 4501 } 4502 4503 /* XXX HT protection? */ 4504 4505 if (flags & (IWN_TX_NEED_RTS | IWN_TX_NEED_CTS)) { 4506 if (sc->hw_type != IWN_HW_REV_TYPE_4965) { 4507 /* 5000 autoselects RTS/CTS or CTS-to-self. */ 4508 flags &= ~(IWN_TX_NEED_RTS | IWN_TX_NEED_CTS); 4509 flags |= IWN_TX_NEED_PROTECTION; 4510 } else 4511 flags |= IWN_TX_FULL_TXOP; 4512 } 4513 } 4514 4515 if (IEEE80211_IS_MULTICAST(wh->i_addr1) || 4516 type != IEEE80211_FC0_TYPE_DATA) 4517 tx->id = sc->broadcast_id; 4518 else 4519 tx->id = wn->id; 4520 4521 if (type == IEEE80211_FC0_TYPE_MGT) { 4522 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 4523 4524 /* Tell HW to set timestamp in probe responses. */ 4525 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 4526 flags |= IWN_TX_INSERT_TSTAMP; 4527 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 4528 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 4529 tx->timeout = htole16(3); 4530 else 4531 tx->timeout = htole16(2); 4532 } else 4533 tx->timeout = htole16(0); 4534 4535 if (hdrlen & 3) { 4536 /* First segment length must be a multiple of 4. */ 4537 flags |= IWN_TX_NEED_PADDING; 4538 pad = 4 - (hdrlen & 3); 4539 } else 4540 pad = 0; 4541 4542 tx->len = htole16(totlen); 4543 tx->tid = tid; 4544 tx->rts_ntries = 60; 4545 tx->data_ntries = 15; 4546 tx->lifetime = htole32(IWN_LIFETIME_INFINITE); 4547 tx->rate = iwn_rate_to_plcp(sc, ni, rate); 4548 if (tx->id == sc->broadcast_id) { 4549 /* Group or management frame. */ 4550 tx->linkq = 0; 4551 } else { 4552 tx->linkq = iwn_tx_rate_to_linkq_offset(sc, ni, rate); 4553 flags |= IWN_TX_LINKQ; /* enable MRR */ 4554 } 4555 4556 /* Set physical address of "scratch area". */ 4557 tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr)); 4558 tx->hiaddr = IWN_HIADDR(data->scratch_paddr); 4559 4560 /* Copy 802.11 header in TX command. */ 4561 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 4562 4563 /* Trim 802.11 header. */ 4564 m_adj(m, hdrlen); 4565 tx->security = 0; 4566 tx->flags = htole32(flags); 4567 4568 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs, 4569 &nsegs, BUS_DMA_NOWAIT); 4570 if (error != 0) { 4571 if (error != EFBIG) { 4572 device_printf(sc->sc_dev, 4573 "%s: can't map mbuf (error %d)\n", __func__, error); 4574 return error; 4575 } 4576 /* Too many DMA segments, linearize mbuf. */ 4577 m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER - 1); 4578 if (m1 == NULL) { 4579 device_printf(sc->sc_dev, 4580 "%s: could not defrag mbuf\n", __func__); 4581 return ENOBUFS; 4582 } 4583 m = m1; 4584 4585 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, 4586 segs, &nsegs, BUS_DMA_NOWAIT); 4587 if (error != 0) { 4588 device_printf(sc->sc_dev, 4589 "%s: can't map mbuf (error %d)\n", __func__, error); 4590 return error; 4591 } 4592 } 4593 4594 data->m = m; 4595 data->ni = ni; 4596 4597 DPRINTF(sc, IWN_DEBUG_XMIT, 4598 "%s: qid %d idx %d len %d nsegs %d flags 0x%08x rate 0x%04x plcp 0x%08x\n", 4599 __func__, 4600 ring->qid, 4601 ring->cur, 4602 m->m_pkthdr.len, 4603 nsegs, 4604 flags, 4605 rate, 4606 tx->rate); 4607 4608 /* Fill TX descriptor. */ 4609 desc->nsegs = 1; 4610 if (m->m_len != 0) 4611 desc->nsegs += nsegs; 4612 /* First DMA segment is used by the TX command. */ 4613 desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr)); 4614 desc->segs[0].len = htole16(IWN_HIADDR(data->cmd_paddr) | 4615 (4 + sizeof (*tx) + hdrlen + pad) << 4); 4616 /* Other DMA segments are for data payload. */ 4617 seg = &segs[0]; 4618 for (i = 1; i <= nsegs; i++) { 4619 desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr)); 4620 desc->segs[i].len = htole16(IWN_HIADDR(seg->ds_addr) | 4621 seg->ds_len << 4); 4622 seg++; 4623 } 4624 4625 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 4626 bus_dmamap_sync(ring->cmd_dma.tag, ring->cmd_dma.map, 4627 BUS_DMASYNC_PREWRITE); 4628 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 4629 BUS_DMASYNC_PREWRITE); 4630 4631 /* Update TX scheduler. */ 4632 if (ring->qid >= sc->firstaggqueue) 4633 ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen); 4634 4635 /* Kick TX ring. */ 4636 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT; 4637 IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 4638 4639 /* Mark TX ring as full if we reach a certain threshold. */ 4640 if (++ring->queued > IWN_TX_RING_HIMARK) 4641 sc->qfullmsk |= 1 << ring->qid; 4642 4643 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 4644 4645 return 0; 4646 } 4647 4648 static int 4649 iwn_tx_data_raw(struct iwn_softc *sc, struct mbuf *m, 4650 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 4651 { 4652 struct iwn_ops *ops = &sc->ops; 4653 struct ieee80211vap *vap = ni->ni_vap; 4654 struct iwn_tx_cmd *cmd; 4655 struct iwn_cmd_data *tx; 4656 struct ieee80211_frame *wh; 4657 struct iwn_tx_ring *ring; 4658 struct iwn_tx_desc *desc; 4659 struct iwn_tx_data *data; 4660 struct mbuf *m1; 4661 bus_dma_segment_t *seg, segs[IWN_MAX_SCATTER]; 4662 uint32_t flags; 4663 u_int hdrlen; 4664 int ac, totlen, error, pad, nsegs = 0, i, rate; 4665 uint8_t type; 4666 4667 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 4668 4669 IWN_LOCK_ASSERT(sc); 4670 4671 wh = mtod(m, struct ieee80211_frame *); 4672 hdrlen = ieee80211_anyhdrsize(wh); 4673 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 4674 4675 ac = params->ibp_pri & 3; 4676 4677 ring = &sc->txq[ac]; 4678 desc = &ring->desc[ring->cur]; 4679 data = &ring->data[ring->cur]; 4680 4681 /* Choose a TX rate. */ 4682 rate = params->ibp_rate0; 4683 totlen = m->m_pkthdr.len; 4684 4685 /* Prepare TX firmware command. */ 4686 cmd = &ring->cmd[ring->cur]; 4687 cmd->code = IWN_CMD_TX_DATA; 4688 cmd->flags = 0; 4689 cmd->qid = ring->qid; 4690 cmd->idx = ring->cur; 4691 4692 tx = (struct iwn_cmd_data *)cmd->data; 4693 /* NB: No need to clear tx, all fields are reinitialized here. */ 4694 tx->scratch = 0; /* clear "scratch" area */ 4695 4696 flags = 0; 4697 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 4698 flags |= IWN_TX_NEED_ACK; 4699 if (params->ibp_flags & IEEE80211_BPF_RTS) { 4700 if (sc->hw_type != IWN_HW_REV_TYPE_4965) { 4701 /* 5000 autoselects RTS/CTS or CTS-to-self. */ 4702 flags &= ~IWN_TX_NEED_RTS; 4703 flags |= IWN_TX_NEED_PROTECTION; 4704 } else 4705 flags |= IWN_TX_NEED_RTS | IWN_TX_FULL_TXOP; 4706 } 4707 if (params->ibp_flags & IEEE80211_BPF_CTS) { 4708 if (sc->hw_type != IWN_HW_REV_TYPE_4965) { 4709 /* 5000 autoselects RTS/CTS or CTS-to-self. */ 4710 flags &= ~IWN_TX_NEED_CTS; 4711 flags |= IWN_TX_NEED_PROTECTION; 4712 } else 4713 flags |= IWN_TX_NEED_CTS | IWN_TX_FULL_TXOP; 4714 } 4715 if (type == IEEE80211_FC0_TYPE_MGT) { 4716 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 4717 4718 /* Tell HW to set timestamp in probe responses. */ 4719 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) 4720 flags |= IWN_TX_INSERT_TSTAMP; 4721 4722 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ || 4723 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) 4724 tx->timeout = htole16(3); 4725 else 4726 tx->timeout = htole16(2); 4727 } else 4728 tx->timeout = htole16(0); 4729 4730 if (hdrlen & 3) { 4731 /* First segment length must be a multiple of 4. */ 4732 flags |= IWN_TX_NEED_PADDING; 4733 pad = 4 - (hdrlen & 3); 4734 } else 4735 pad = 0; 4736 4737 if (ieee80211_radiotap_active_vap(vap)) { 4738 struct iwn_tx_radiotap_header *tap = &sc->sc_txtap; 4739 4740 tap->wt_flags = 0; 4741 tap->wt_rate = rate; 4742 4743 ieee80211_radiotap_tx(vap, m); 4744 } 4745 4746 tx->len = htole16(totlen); 4747 tx->tid = 0; 4748 tx->id = sc->broadcast_id; 4749 tx->rts_ntries = params->ibp_try1; 4750 tx->data_ntries = params->ibp_try0; 4751 tx->lifetime = htole32(IWN_LIFETIME_INFINITE); 4752 tx->rate = iwn_rate_to_plcp(sc, ni, rate); 4753 4754 /* Group or management frame. */ 4755 tx->linkq = 0; 4756 4757 /* Set physical address of "scratch area". */ 4758 tx->loaddr = htole32(IWN_LOADDR(data->scratch_paddr)); 4759 tx->hiaddr = IWN_HIADDR(data->scratch_paddr); 4760 4761 /* Copy 802.11 header in TX command. */ 4762 memcpy((uint8_t *)(tx + 1), wh, hdrlen); 4763 4764 /* Trim 802.11 header. */ 4765 m_adj(m, hdrlen); 4766 tx->security = 0; 4767 tx->flags = htole32(flags); 4768 4769 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, segs, 4770 &nsegs, BUS_DMA_NOWAIT); 4771 if (error != 0) { 4772 if (error != EFBIG) { 4773 device_printf(sc->sc_dev, 4774 "%s: can't map mbuf (error %d)\n", __func__, error); 4775 return error; 4776 } 4777 /* Too many DMA segments, linearize mbuf. */ 4778 m1 = m_collapse(m, M_NOWAIT, IWN_MAX_SCATTER - 1); 4779 if (m1 == NULL) { 4780 device_printf(sc->sc_dev, 4781 "%s: could not defrag mbuf\n", __func__); 4782 return ENOBUFS; 4783 } 4784 m = m1; 4785 4786 error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m, 4787 segs, &nsegs, BUS_DMA_NOWAIT); 4788 if (error != 0) { 4789 device_printf(sc->sc_dev, 4790 "%s: can't map mbuf (error %d)\n", __func__, error); 4791 return error; 4792 } 4793 } 4794 4795 data->m = m; 4796 data->ni = ni; 4797 4798 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: qid %d idx %d len %d nsegs %d\n", 4799 __func__, ring->qid, ring->cur, m->m_pkthdr.len, nsegs); 4800 4801 /* Fill TX descriptor. */ 4802 desc->nsegs = 1; 4803 if (m->m_len != 0) 4804 desc->nsegs += nsegs; 4805 /* First DMA segment is used by the TX command. */ 4806 desc->segs[0].addr = htole32(IWN_LOADDR(data->cmd_paddr)); 4807 desc->segs[0].len = htole16(IWN_HIADDR(data->cmd_paddr) | 4808 (4 + sizeof (*tx) + hdrlen + pad) << 4); 4809 /* Other DMA segments are for data payload. */ 4810 seg = &segs[0]; 4811 for (i = 1; i <= nsegs; i++) { 4812 desc->segs[i].addr = htole32(IWN_LOADDR(seg->ds_addr)); 4813 desc->segs[i].len = htole16(IWN_HIADDR(seg->ds_addr) | 4814 seg->ds_len << 4); 4815 seg++; 4816 } 4817 4818 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 4819 bus_dmamap_sync(ring->cmd_dma.tag, ring->cmd_dma.map, 4820 BUS_DMASYNC_PREWRITE); 4821 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 4822 BUS_DMASYNC_PREWRITE); 4823 4824 /* Update TX scheduler. */ 4825 if (ring->qid >= sc->firstaggqueue) 4826 ops->update_sched(sc, ring->qid, ring->cur, tx->id, totlen); 4827 4828 /* Kick TX ring. */ 4829 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT; 4830 IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 4831 4832 /* Mark TX ring as full if we reach a certain threshold. */ 4833 if (++ring->queued > IWN_TX_RING_HIMARK) 4834 sc->qfullmsk |= 1 << ring->qid; 4835 4836 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 4837 4838 return 0; 4839 } 4840 4841 static void 4842 iwn_xmit_task(void *arg0, int pending) 4843 { 4844 struct iwn_softc *sc = arg0; 4845 struct ieee80211_node *ni; 4846 struct mbuf *m; 4847 int error; 4848 struct ieee80211_bpf_params p; 4849 int have_p; 4850 4851 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: called\n", __func__); 4852 4853 IWN_LOCK(sc); 4854 /* 4855 * Dequeue frames, attempt to transmit, 4856 * then disable beaconwait when we're done. 4857 */ 4858 while ((m = mbufq_dequeue(&sc->sc_xmit_queue)) != NULL) { 4859 have_p = 0; 4860 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 4861 4862 /* Get xmit params if appropriate */ 4863 if (ieee80211_get_xmit_params(m, &p) == 0) 4864 have_p = 1; 4865 4866 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: m=%p, have_p=%d\n", 4867 __func__, m, have_p); 4868 4869 /* If we have xmit params, use them */ 4870 if (have_p) 4871 error = iwn_tx_data_raw(sc, m, ni, &p); 4872 else 4873 error = iwn_tx_data(sc, m, ni); 4874 4875 if (error != 0) { 4876 if_inc_counter(ni->ni_vap->iv_ifp, 4877 IFCOUNTER_OERRORS, 1); 4878 ieee80211_free_node(ni); 4879 m_freem(m); 4880 } 4881 } 4882 4883 sc->sc_beacon_wait = 0; 4884 IWN_UNLOCK(sc); 4885 } 4886 4887 /* 4888 * raw frame xmit - free node/reference if failed. 4889 */ 4890 static int 4891 iwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 4892 const struct ieee80211_bpf_params *params) 4893 { 4894 struct ieee80211com *ic = ni->ni_ic; 4895 struct iwn_softc *sc = ic->ic_softc; 4896 int error = 0; 4897 4898 DPRINTF(sc, IWN_DEBUG_XMIT | IWN_DEBUG_TRACE, "->%s begin\n", __func__); 4899 4900 IWN_LOCK(sc); 4901 if ((sc->sc_flags & IWN_FLAG_RUNNING) == 0) { 4902 m_freem(m); 4903 IWN_UNLOCK(sc); 4904 return (ENETDOWN); 4905 } 4906 4907 /* queue frame if we have to */ 4908 if (sc->sc_beacon_wait) { 4909 if (iwn_xmit_queue_enqueue(sc, m) != 0) { 4910 m_freem(m); 4911 IWN_UNLOCK(sc); 4912 return (ENOBUFS); 4913 } 4914 /* Queued, so just return OK */ 4915 IWN_UNLOCK(sc); 4916 return (0); 4917 } 4918 4919 if (params == NULL) { 4920 /* 4921 * Legacy path; interpret frame contents to decide 4922 * precisely how to send the frame. 4923 */ 4924 error = iwn_tx_data(sc, m, ni); 4925 } else { 4926 /* 4927 * Caller supplied explicit parameters to use in 4928 * sending the frame. 4929 */ 4930 error = iwn_tx_data_raw(sc, m, ni, params); 4931 } 4932 if (error == 0) 4933 sc->sc_tx_timer = 5; 4934 else 4935 m_freem(m); 4936 4937 IWN_UNLOCK(sc); 4938 4939 DPRINTF(sc, IWN_DEBUG_TRACE | IWN_DEBUG_XMIT, "->%s: end\n",__func__); 4940 4941 return (error); 4942 } 4943 4944 /* 4945 * transmit - don't free mbuf if failed; don't free node ref if failed. 4946 */ 4947 static int 4948 iwn_transmit(struct ieee80211com *ic, struct mbuf *m) 4949 { 4950 struct iwn_softc *sc = ic->ic_softc; 4951 struct ieee80211_node *ni; 4952 int error; 4953 4954 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 4955 4956 IWN_LOCK(sc); 4957 if ((sc->sc_flags & IWN_FLAG_RUNNING) == 0 || sc->sc_beacon_wait) { 4958 IWN_UNLOCK(sc); 4959 return (ENXIO); 4960 } 4961 4962 if (sc->qfullmsk) { 4963 IWN_UNLOCK(sc); 4964 return (ENOBUFS); 4965 } 4966 4967 error = iwn_tx_data(sc, m, ni); 4968 if (!error) 4969 sc->sc_tx_timer = 5; 4970 IWN_UNLOCK(sc); 4971 return (error); 4972 } 4973 4974 static void 4975 iwn_scan_timeout(void *arg) 4976 { 4977 struct iwn_softc *sc = arg; 4978 struct ieee80211com *ic = &sc->sc_ic; 4979 4980 ic_printf(ic, "scan timeout\n"); 4981 ieee80211_restart_all(ic); 4982 } 4983 4984 static void 4985 iwn_watchdog(void *arg) 4986 { 4987 struct iwn_softc *sc = arg; 4988 struct ieee80211com *ic = &sc->sc_ic; 4989 4990 IWN_LOCK_ASSERT(sc); 4991 4992 KASSERT(sc->sc_flags & IWN_FLAG_RUNNING, ("not running")); 4993 4994 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 4995 4996 if (sc->sc_tx_timer > 0) { 4997 if (--sc->sc_tx_timer == 0) { 4998 ic_printf(ic, "device timeout\n"); 4999 ieee80211_restart_all(ic); 5000 return; 5001 } 5002 } 5003 callout_reset(&sc->watchdog_to, hz, iwn_watchdog, sc); 5004 } 5005 5006 static int 5007 iwn_cdev_open(struct cdev *dev, int flags, int type, struct thread *td) 5008 { 5009 5010 return (0); 5011 } 5012 5013 static int 5014 iwn_cdev_close(struct cdev *dev, int flags, int type, struct thread *td) 5015 { 5016 5017 return (0); 5018 } 5019 5020 static int 5021 iwn_cdev_ioctl(struct cdev *dev, unsigned long cmd, caddr_t data, int fflag, 5022 struct thread *td) 5023 { 5024 int rc; 5025 struct iwn_softc *sc = dev->si_drv1; 5026 struct iwn_ioctl_data *d; 5027 5028 rc = priv_check(td, PRIV_DRIVER); 5029 if (rc != 0) 5030 return (0); 5031 5032 switch (cmd) { 5033 case SIOCGIWNSTATS: 5034 d = (struct iwn_ioctl_data *) data; 5035 IWN_LOCK(sc); 5036 /* XXX validate permissions/memory/etc? */ 5037 rc = copyout(&sc->last_stat, d->dst_addr, sizeof(struct iwn_stats)); 5038 IWN_UNLOCK(sc); 5039 break; 5040 case SIOCZIWNSTATS: 5041 IWN_LOCK(sc); 5042 memset(&sc->last_stat, 0, sizeof(struct iwn_stats)); 5043 IWN_UNLOCK(sc); 5044 break; 5045 default: 5046 rc = EINVAL; 5047 break; 5048 } 5049 return (rc); 5050 } 5051 5052 static int 5053 iwn_ioctl(struct ieee80211com *ic, u_long cmd, void *data) 5054 { 5055 5056 return (ENOTTY); 5057 } 5058 5059 static void 5060 iwn_parent(struct ieee80211com *ic) 5061 { 5062 struct iwn_softc *sc = ic->ic_softc; 5063 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 5064 int startall = 0, stop = 0; 5065 5066 IWN_LOCK(sc); 5067 if (ic->ic_nrunning > 0) { 5068 if (!(sc->sc_flags & IWN_FLAG_RUNNING)) { 5069 iwn_init_locked(sc); 5070 if (IWN_READ(sc, IWN_GP_CNTRL) & IWN_GP_CNTRL_RFKILL) 5071 startall = 1; 5072 else 5073 stop = 1; 5074 } 5075 } else if (sc->sc_flags & IWN_FLAG_RUNNING) 5076 iwn_stop_locked(sc); 5077 IWN_UNLOCK(sc); 5078 if (startall) 5079 ieee80211_start_all(ic); 5080 else if (vap != NULL && stop) 5081 ieee80211_stop(vap); 5082 } 5083 5084 /* 5085 * Send a command to the firmware. 5086 */ 5087 static int 5088 iwn_cmd(struct iwn_softc *sc, int code, const void *buf, int size, int async) 5089 { 5090 struct iwn_tx_ring *ring; 5091 struct iwn_tx_desc *desc; 5092 struct iwn_tx_data *data; 5093 struct iwn_tx_cmd *cmd; 5094 struct mbuf *m; 5095 bus_addr_t paddr; 5096 int totlen, error; 5097 int cmd_queue_num; 5098 5099 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 5100 5101 if (async == 0) 5102 IWN_LOCK_ASSERT(sc); 5103 5104 if (sc->sc_flags & IWN_FLAG_PAN_SUPPORT) 5105 cmd_queue_num = IWN_PAN_CMD_QUEUE; 5106 else 5107 cmd_queue_num = IWN_CMD_QUEUE_NUM; 5108 5109 ring = &sc->txq[cmd_queue_num]; 5110 desc = &ring->desc[ring->cur]; 5111 data = &ring->data[ring->cur]; 5112 totlen = 4 + size; 5113 5114 if (size > sizeof cmd->data) { 5115 /* Command is too large to fit in a descriptor. */ 5116 if (totlen > MCLBYTES) 5117 return EINVAL; 5118 m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); 5119 if (m == NULL) 5120 return ENOMEM; 5121 cmd = mtod(m, struct iwn_tx_cmd *); 5122 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, 5123 totlen, iwn_dma_map_addr, &paddr, BUS_DMA_NOWAIT); 5124 if (error != 0) { 5125 m_freem(m); 5126 return error; 5127 } 5128 data->m = m; 5129 } else { 5130 cmd = &ring->cmd[ring->cur]; 5131 paddr = data->cmd_paddr; 5132 } 5133 5134 cmd->code = code; 5135 cmd->flags = 0; 5136 cmd->qid = ring->qid; 5137 cmd->idx = ring->cur; 5138 memcpy(cmd->data, buf, size); 5139 5140 desc->nsegs = 1; 5141 desc->segs[0].addr = htole32(IWN_LOADDR(paddr)); 5142 desc->segs[0].len = htole16(IWN_HIADDR(paddr) | totlen << 4); 5143 5144 DPRINTF(sc, IWN_DEBUG_CMD, "%s: %s (0x%x) flags %d qid %d idx %d\n", 5145 __func__, iwn_intr_str(cmd->code), cmd->code, 5146 cmd->flags, cmd->qid, cmd->idx); 5147 5148 if (size > sizeof cmd->data) { 5149 bus_dmamap_sync(ring->data_dmat, data->map, 5150 BUS_DMASYNC_PREWRITE); 5151 } else { 5152 bus_dmamap_sync(ring->cmd_dma.tag, ring->cmd_dma.map, 5153 BUS_DMASYNC_PREWRITE); 5154 } 5155 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map, 5156 BUS_DMASYNC_PREWRITE); 5157 5158 /* Kick command ring. */ 5159 ring->cur = (ring->cur + 1) % IWN_TX_RING_COUNT; 5160 IWN_WRITE(sc, IWN_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur); 5161 5162 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 5163 5164 return async ? 0 : msleep(desc, &sc->sc_mtx, PCATCH, "iwncmd", hz); 5165 } 5166 5167 static int 5168 iwn4965_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async) 5169 { 5170 struct iwn4965_node_info hnode; 5171 caddr_t src, dst; 5172 5173 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5174 5175 /* 5176 * We use the node structure for 5000 Series internally (it is 5177 * a superset of the one for 4965AGN). We thus copy the common 5178 * fields before sending the command. 5179 */ 5180 src = (caddr_t)node; 5181 dst = (caddr_t)&hnode; 5182 memcpy(dst, src, 48); 5183 /* Skip TSC, RX MIC and TX MIC fields from ``src''. */ 5184 memcpy(dst + 48, src + 72, 20); 5185 return iwn_cmd(sc, IWN_CMD_ADD_NODE, &hnode, sizeof hnode, async); 5186 } 5187 5188 static int 5189 iwn5000_add_node(struct iwn_softc *sc, struct iwn_node_info *node, int async) 5190 { 5191 5192 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5193 5194 /* Direct mapping. */ 5195 return iwn_cmd(sc, IWN_CMD_ADD_NODE, node, sizeof (*node), async); 5196 } 5197 5198 static int 5199 iwn_set_link_quality(struct iwn_softc *sc, struct ieee80211_node *ni) 5200 { 5201 struct iwn_node *wn = (void *)ni; 5202 struct ieee80211_rateset *rs; 5203 struct iwn_cmd_link_quality linkq; 5204 int i, rate, txrate; 5205 int is_11n; 5206 5207 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 5208 5209 memset(&linkq, 0, sizeof linkq); 5210 linkq.id = wn->id; 5211 linkq.antmsk_1stream = iwn_get_1stream_tx_antmask(sc); 5212 linkq.antmsk_2stream = iwn_get_2stream_tx_antmask(sc); 5213 5214 linkq.ampdu_max = 32; /* XXX negotiated? */ 5215 linkq.ampdu_threshold = 3; 5216 linkq.ampdu_limit = htole16(4000); /* 4ms */ 5217 5218 DPRINTF(sc, IWN_DEBUG_XMIT, 5219 "%s: 1stream antenna=0x%02x, 2stream antenna=0x%02x, ntxstreams=%d\n", 5220 __func__, 5221 linkq.antmsk_1stream, 5222 linkq.antmsk_2stream, 5223 sc->ntxchains); 5224 5225 /* 5226 * Are we using 11n rates? Ensure the channel is 5227 * 11n _and_ we have some 11n rates, or don't 5228 * try. 5229 */ 5230 if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && ni->ni_htrates.rs_nrates > 0) { 5231 rs = (struct ieee80211_rateset *) &ni->ni_htrates; 5232 is_11n = 1; 5233 } else { 5234 rs = &ni->ni_rates; 5235 is_11n = 0; 5236 } 5237 5238 /* Start at highest available bit-rate. */ 5239 /* 5240 * XXX this is all very dirty! 5241 */ 5242 if (is_11n) 5243 txrate = ni->ni_htrates.rs_nrates - 1; 5244 else 5245 txrate = rs->rs_nrates - 1; 5246 for (i = 0; i < IWN_MAX_TX_RETRIES; i++) { 5247 uint32_t plcp; 5248 5249 /* 5250 * XXX TODO: ensure the last two slots are the two lowest 5251 * rate entries, just for now. 5252 */ 5253 if (i == 14 || i == 15) 5254 txrate = 0; 5255 5256 if (is_11n) 5257 rate = IEEE80211_RATE_MCS | rs->rs_rates[txrate]; 5258 else 5259 rate = IEEE80211_RV(rs->rs_rates[txrate]); 5260 5261 /* Do rate -> PLCP config mapping */ 5262 plcp = iwn_rate_to_plcp(sc, ni, rate); 5263 linkq.retry[i] = plcp; 5264 DPRINTF(sc, IWN_DEBUG_XMIT, 5265 "%s: i=%d, txrate=%d, rate=0x%02x, plcp=0x%08x\n", 5266 __func__, 5267 i, 5268 txrate, 5269 rate, 5270 le32toh(plcp)); 5271 5272 /* 5273 * The mimo field is an index into the table which 5274 * indicates the first index where it and subsequent entries 5275 * will not be using MIMO. 5276 * 5277 * Since we're filling linkq from 0..15 and we're filling 5278 * from the highest MCS rates to the lowest rates, if we 5279 * _are_ doing a dual-stream rate, set mimo to idx+1 (ie, 5280 * the next entry.) That way if the next entry is a non-MIMO 5281 * entry, we're already pointing at it. 5282 */ 5283 if ((le32toh(plcp) & IWN_RFLAG_MCS) && 5284 IEEE80211_RV(le32toh(plcp)) > 7) 5285 linkq.mimo = i + 1; 5286 5287 /* Next retry at immediate lower bit-rate. */ 5288 if (txrate > 0) 5289 txrate--; 5290 } 5291 /* 5292 * If we reached the end of the list and indeed we hit 5293 * all MIMO rates (eg 5300 doing MCS23-15) then yes, 5294 * set mimo to 15. Setting it to 16 panics the firmware. 5295 */ 5296 if (linkq.mimo > 15) 5297 linkq.mimo = 15; 5298 5299 DPRINTF(sc, IWN_DEBUG_XMIT, "%s: mimo = %d\n", __func__, linkq.mimo); 5300 5301 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 5302 5303 return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, 1); 5304 } 5305 5306 /* 5307 * Broadcast node is used to send group-addressed and management frames. 5308 */ 5309 static int 5310 iwn_add_broadcast_node(struct iwn_softc *sc, int async) 5311 { 5312 struct iwn_ops *ops = &sc->ops; 5313 struct ieee80211com *ic = &sc->sc_ic; 5314 struct iwn_node_info node; 5315 struct iwn_cmd_link_quality linkq; 5316 uint8_t txant; 5317 int i, error; 5318 5319 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 5320 5321 sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX]; 5322 5323 memset(&node, 0, sizeof node); 5324 IEEE80211_ADDR_COPY(node.macaddr, ieee80211broadcastaddr); 5325 node.id = sc->broadcast_id; 5326 DPRINTF(sc, IWN_DEBUG_RESET, "%s: adding broadcast node\n", __func__); 5327 if ((error = ops->add_node(sc, &node, async)) != 0) 5328 return error; 5329 5330 /* Use the first valid TX antenna. */ 5331 txant = IWN_LSB(sc->txchainmask); 5332 5333 memset(&linkq, 0, sizeof linkq); 5334 linkq.id = sc->broadcast_id; 5335 linkq.antmsk_1stream = iwn_get_1stream_tx_antmask(sc); 5336 linkq.antmsk_2stream = iwn_get_2stream_tx_antmask(sc); 5337 linkq.ampdu_max = 64; 5338 linkq.ampdu_threshold = 3; 5339 linkq.ampdu_limit = htole16(4000); /* 4ms */ 5340 5341 /* Use lowest mandatory bit-rate. */ 5342 /* XXX rate table lookup? */ 5343 if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) 5344 linkq.retry[0] = htole32(0xd); 5345 else 5346 linkq.retry[0] = htole32(10 | IWN_RFLAG_CCK); 5347 linkq.retry[0] |= htole32(IWN_RFLAG_ANT(txant)); 5348 /* Use same bit-rate for all TX retries. */ 5349 for (i = 1; i < IWN_MAX_TX_RETRIES; i++) { 5350 linkq.retry[i] = linkq.retry[0]; 5351 } 5352 5353 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 5354 5355 return iwn_cmd(sc, IWN_CMD_LINK_QUALITY, &linkq, sizeof linkq, async); 5356 } 5357 5358 static int 5359 iwn_updateedca(struct ieee80211com *ic) 5360 { 5361 #define IWN_EXP2(x) ((1 << (x)) - 1) /* CWmin = 2^ECWmin - 1 */ 5362 struct iwn_softc *sc = ic->ic_softc; 5363 struct iwn_edca_params cmd; 5364 int aci; 5365 5366 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 5367 5368 memset(&cmd, 0, sizeof cmd); 5369 cmd.flags = htole32(IWN_EDCA_UPDATE); 5370 5371 IEEE80211_LOCK(ic); 5372 for (aci = 0; aci < WME_NUM_AC; aci++) { 5373 const struct wmeParams *ac = 5374 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 5375 cmd.ac[aci].aifsn = ac->wmep_aifsn; 5376 cmd.ac[aci].cwmin = htole16(IWN_EXP2(ac->wmep_logcwmin)); 5377 cmd.ac[aci].cwmax = htole16(IWN_EXP2(ac->wmep_logcwmax)); 5378 cmd.ac[aci].txoplimit = 5379 htole16(IEEE80211_TXOP_TO_US(ac->wmep_txopLimit)); 5380 } 5381 IEEE80211_UNLOCK(ic); 5382 5383 IWN_LOCK(sc); 5384 (void)iwn_cmd(sc, IWN_CMD_EDCA_PARAMS, &cmd, sizeof cmd, 1); 5385 IWN_UNLOCK(sc); 5386 5387 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 5388 5389 return 0; 5390 #undef IWN_EXP2 5391 } 5392 5393 static void 5394 iwn_update_mcast(struct ieee80211com *ic) 5395 { 5396 /* Ignore */ 5397 } 5398 5399 static void 5400 iwn_set_led(struct iwn_softc *sc, uint8_t which, uint8_t off, uint8_t on) 5401 { 5402 struct iwn_cmd_led led; 5403 5404 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5405 5406 #if 0 5407 /* XXX don't set LEDs during scan? */ 5408 if (sc->sc_is_scanning) 5409 return; 5410 #endif 5411 5412 /* Clear microcode LED ownership. */ 5413 IWN_CLRBITS(sc, IWN_LED, IWN_LED_BSM_CTRL); 5414 5415 led.which = which; 5416 led.unit = htole32(10000); /* on/off in unit of 100ms */ 5417 led.off = off; 5418 led.on = on; 5419 (void)iwn_cmd(sc, IWN_CMD_SET_LED, &led, sizeof led, 1); 5420 } 5421 5422 /* 5423 * Set the critical temperature at which the firmware will stop the radio 5424 * and notify us. 5425 */ 5426 static int 5427 iwn_set_critical_temp(struct iwn_softc *sc) 5428 { 5429 struct iwn_critical_temp crit; 5430 int32_t temp; 5431 5432 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5433 5434 IWN_WRITE(sc, IWN_UCODE_GP1_CLR, IWN_UCODE_GP1_CTEMP_STOP_RF); 5435 5436 if (sc->hw_type == IWN_HW_REV_TYPE_5150) 5437 temp = (IWN_CTOK(110) - sc->temp_off) * -5; 5438 else if (sc->hw_type == IWN_HW_REV_TYPE_4965) 5439 temp = IWN_CTOK(110); 5440 else 5441 temp = 110; 5442 memset(&crit, 0, sizeof crit); 5443 crit.tempR = htole32(temp); 5444 DPRINTF(sc, IWN_DEBUG_RESET, "setting critical temp to %d\n", temp); 5445 return iwn_cmd(sc, IWN_CMD_SET_CRITICAL_TEMP, &crit, sizeof crit, 0); 5446 } 5447 5448 static int 5449 iwn_set_timing(struct iwn_softc *sc, struct ieee80211_node *ni) 5450 { 5451 struct iwn_cmd_timing cmd; 5452 uint64_t val, mod; 5453 5454 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5455 5456 memset(&cmd, 0, sizeof cmd); 5457 memcpy(&cmd.tstamp, ni->ni_tstamp.data, sizeof (uint64_t)); 5458 cmd.bintval = htole16(ni->ni_intval); 5459 cmd.lintval = htole16(10); 5460 5461 /* Compute remaining time until next beacon. */ 5462 val = (uint64_t)ni->ni_intval * IEEE80211_DUR_TU; 5463 mod = le64toh(cmd.tstamp) % val; 5464 cmd.binitval = htole32((uint32_t)(val - mod)); 5465 5466 DPRINTF(sc, IWN_DEBUG_RESET, "timing bintval=%u tstamp=%ju, init=%u\n", 5467 ni->ni_intval, le64toh(cmd.tstamp), (uint32_t)(val - mod)); 5468 5469 return iwn_cmd(sc, IWN_CMD_TIMING, &cmd, sizeof cmd, 1); 5470 } 5471 5472 static void 5473 iwn4965_power_calibration(struct iwn_softc *sc, int temp) 5474 { 5475 struct ieee80211com *ic = &sc->sc_ic; 5476 5477 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5478 5479 /* Adjust TX power if need be (delta >= 3 degC). */ 5480 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: temperature %d->%d\n", 5481 __func__, sc->temp, temp); 5482 if (abs(temp - sc->temp) >= 3) { 5483 /* Record temperature of last calibration. */ 5484 sc->temp = temp; 5485 (void)iwn4965_set_txpower(sc, ic->ic_bsschan, 1); 5486 } 5487 } 5488 5489 /* 5490 * Set TX power for current channel (each rate has its own power settings). 5491 * This function takes into account the regulatory information from EEPROM, 5492 * the current temperature and the current voltage. 5493 */ 5494 static int 5495 iwn4965_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch, 5496 int async) 5497 { 5498 /* Fixed-point arithmetic division using a n-bit fractional part. */ 5499 #define fdivround(a, b, n) \ 5500 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n)) 5501 /* Linear interpolation. */ 5502 #define interpolate(x, x1, y1, x2, y2, n) \ 5503 ((y1) + fdivround(((int)(x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n)) 5504 5505 static const int tdiv[IWN_NATTEN_GROUPS] = { 9, 8, 8, 8, 6 }; 5506 struct iwn_ucode_info *uc = &sc->ucode_info; 5507 struct iwn4965_cmd_txpower cmd; 5508 struct iwn4965_eeprom_chan_samples *chans; 5509 const uint8_t *rf_gain, *dsp_gain; 5510 int32_t vdiff, tdiff; 5511 int i, c, grp, maxpwr; 5512 uint8_t chan; 5513 5514 sc->rxon = &sc->rx_on[IWN_RXON_BSS_CTX]; 5515 /* Retrieve current channel from last RXON. */ 5516 chan = sc->rxon->chan; 5517 DPRINTF(sc, IWN_DEBUG_RESET, "setting TX power for channel %d\n", 5518 chan); 5519 5520 memset(&cmd, 0, sizeof cmd); 5521 cmd.band = IEEE80211_IS_CHAN_5GHZ(ch) ? 0 : 1; 5522 cmd.chan = chan; 5523 5524 if (IEEE80211_IS_CHAN_5GHZ(ch)) { 5525 maxpwr = sc->maxpwr5GHz; 5526 rf_gain = iwn4965_rf_gain_5ghz; 5527 dsp_gain = iwn4965_dsp_gain_5ghz; 5528 } else { 5529 maxpwr = sc->maxpwr2GHz; 5530 rf_gain = iwn4965_rf_gain_2ghz; 5531 dsp_gain = iwn4965_dsp_gain_2ghz; 5532 } 5533 5534 /* Compute voltage compensation. */ 5535 vdiff = ((int32_t)le32toh(uc->volt) - sc->eeprom_voltage) / 7; 5536 if (vdiff > 0) 5537 vdiff *= 2; 5538 if (abs(vdiff) > 2) 5539 vdiff = 0; 5540 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW, 5541 "%s: voltage compensation=%d (UCODE=%d, EEPROM=%d)\n", 5542 __func__, vdiff, le32toh(uc->volt), sc->eeprom_voltage); 5543 5544 /* Get channel attenuation group. */ 5545 if (chan <= 20) /* 1-20 */ 5546 grp = 4; 5547 else if (chan <= 43) /* 34-43 */ 5548 grp = 0; 5549 else if (chan <= 70) /* 44-70 */ 5550 grp = 1; 5551 else if (chan <= 124) /* 71-124 */ 5552 grp = 2; 5553 else /* 125-200 */ 5554 grp = 3; 5555 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW, 5556 "%s: chan %d, attenuation group=%d\n", __func__, chan, grp); 5557 5558 /* Get channel sub-band. */ 5559 for (i = 0; i < IWN_NBANDS; i++) 5560 if (sc->bands[i].lo != 0 && 5561 sc->bands[i].lo <= chan && chan <= sc->bands[i].hi) 5562 break; 5563 if (i == IWN_NBANDS) /* Can't happen in real-life. */ 5564 return EINVAL; 5565 chans = sc->bands[i].chans; 5566 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW, 5567 "%s: chan %d sub-band=%d\n", __func__, chan, i); 5568 5569 for (c = 0; c < 2; c++) { 5570 uint8_t power, gain, temp; 5571 int maxchpwr, pwr, ridx, idx; 5572 5573 power = interpolate(chan, 5574 chans[0].num, chans[0].samples[c][1].power, 5575 chans[1].num, chans[1].samples[c][1].power, 1); 5576 gain = interpolate(chan, 5577 chans[0].num, chans[0].samples[c][1].gain, 5578 chans[1].num, chans[1].samples[c][1].gain, 1); 5579 temp = interpolate(chan, 5580 chans[0].num, chans[0].samples[c][1].temp, 5581 chans[1].num, chans[1].samples[c][1].temp, 1); 5582 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW, 5583 "%s: Tx chain %d: power=%d gain=%d temp=%d\n", 5584 __func__, c, power, gain, temp); 5585 5586 /* Compute temperature compensation. */ 5587 tdiff = ((sc->temp - temp) * 2) / tdiv[grp]; 5588 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW, 5589 "%s: temperature compensation=%d (current=%d, EEPROM=%d)\n", 5590 __func__, tdiff, sc->temp, temp); 5591 5592 for (ridx = 0; ridx <= IWN_RIDX_MAX; ridx++) { 5593 /* Convert dBm to half-dBm. */ 5594 maxchpwr = sc->maxpwr[chan] * 2; 5595 if ((ridx / 8) & 1) 5596 maxchpwr -= 6; /* MIMO 2T: -3dB */ 5597 5598 pwr = maxpwr; 5599 5600 /* Adjust TX power based on rate. */ 5601 if ((ridx % 8) == 5) 5602 pwr -= 15; /* OFDM48: -7.5dB */ 5603 else if ((ridx % 8) == 6) 5604 pwr -= 17; /* OFDM54: -8.5dB */ 5605 else if ((ridx % 8) == 7) 5606 pwr -= 20; /* OFDM60: -10dB */ 5607 else 5608 pwr -= 10; /* Others: -5dB */ 5609 5610 /* Do not exceed channel max TX power. */ 5611 if (pwr > maxchpwr) 5612 pwr = maxchpwr; 5613 5614 idx = gain - (pwr - power) - tdiff - vdiff; 5615 if ((ridx / 8) & 1) /* MIMO */ 5616 idx += (int32_t)le32toh(uc->atten[grp][c]); 5617 5618 if (cmd.band == 0) 5619 idx += 9; /* 5GHz */ 5620 if (ridx == IWN_RIDX_MAX) 5621 idx += 5; /* CCK */ 5622 5623 /* Make sure idx stays in a valid range. */ 5624 if (idx < 0) 5625 idx = 0; 5626 else if (idx > IWN4965_MAX_PWR_INDEX) 5627 idx = IWN4965_MAX_PWR_INDEX; 5628 5629 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW, 5630 "%s: Tx chain %d, rate idx %d: power=%d\n", 5631 __func__, c, ridx, idx); 5632 cmd.power[ridx].rf_gain[c] = rf_gain[idx]; 5633 cmd.power[ridx].dsp_gain[c] = dsp_gain[idx]; 5634 } 5635 } 5636 5637 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_TXPOW, 5638 "%s: set tx power for chan %d\n", __func__, chan); 5639 return iwn_cmd(sc, IWN_CMD_TXPOWER, &cmd, sizeof cmd, async); 5640 5641 #undef interpolate 5642 #undef fdivround 5643 } 5644 5645 static int 5646 iwn5000_set_txpower(struct iwn_softc *sc, struct ieee80211_channel *ch, 5647 int async) 5648 { 5649 struct iwn5000_cmd_txpower cmd; 5650 int cmdid; 5651 5652 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5653 5654 /* 5655 * TX power calibration is handled automatically by the firmware 5656 * for 5000 Series. 5657 */ 5658 memset(&cmd, 0, sizeof cmd); 5659 cmd.global_limit = 2 * IWN5000_TXPOWER_MAX_DBM; /* 16 dBm */ 5660 cmd.flags = IWN5000_TXPOWER_NO_CLOSED; 5661 cmd.srv_limit = IWN5000_TXPOWER_AUTO; 5662 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_XMIT, 5663 "%s: setting TX power; rev=%d\n", 5664 __func__, 5665 IWN_UCODE_API(sc->ucode_rev)); 5666 if (IWN_UCODE_API(sc->ucode_rev) == 1) 5667 cmdid = IWN_CMD_TXPOWER_DBM_V1; 5668 else 5669 cmdid = IWN_CMD_TXPOWER_DBM; 5670 return iwn_cmd(sc, cmdid, &cmd, sizeof cmd, async); 5671 } 5672 5673 /* 5674 * Retrieve the maximum RSSI (in dBm) among receivers. 5675 */ 5676 static int 5677 iwn4965_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat) 5678 { 5679 struct iwn4965_rx_phystat *phy = (void *)stat->phybuf; 5680 uint8_t mask, agc; 5681 int rssi; 5682 5683 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5684 5685 mask = (le16toh(phy->antenna) >> 4) & IWN_ANT_ABC; 5686 agc = (le16toh(phy->agc) >> 7) & 0x7f; 5687 5688 rssi = 0; 5689 if (mask & IWN_ANT_A) 5690 rssi = MAX(rssi, phy->rssi[0]); 5691 if (mask & IWN_ANT_B) 5692 rssi = MAX(rssi, phy->rssi[2]); 5693 if (mask & IWN_ANT_C) 5694 rssi = MAX(rssi, phy->rssi[4]); 5695 5696 DPRINTF(sc, IWN_DEBUG_RECV, 5697 "%s: agc %d mask 0x%x rssi %d %d %d result %d\n", __func__, agc, 5698 mask, phy->rssi[0], phy->rssi[2], phy->rssi[4], 5699 rssi - agc - IWN_RSSI_TO_DBM); 5700 return rssi - agc - IWN_RSSI_TO_DBM; 5701 } 5702 5703 static int 5704 iwn5000_get_rssi(struct iwn_softc *sc, struct iwn_rx_stat *stat) 5705 { 5706 struct iwn5000_rx_phystat *phy = (void *)stat->phybuf; 5707 uint8_t agc; 5708 int rssi; 5709 5710 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5711 5712 agc = (le32toh(phy->agc) >> 9) & 0x7f; 5713 5714 rssi = MAX(le16toh(phy->rssi[0]) & 0xff, 5715 le16toh(phy->rssi[1]) & 0xff); 5716 rssi = MAX(le16toh(phy->rssi[2]) & 0xff, rssi); 5717 5718 DPRINTF(sc, IWN_DEBUG_RECV, 5719 "%s: agc %d rssi %d %d %d result %d\n", __func__, agc, 5720 phy->rssi[0], phy->rssi[1], phy->rssi[2], 5721 rssi - agc - IWN_RSSI_TO_DBM); 5722 return rssi - agc - IWN_RSSI_TO_DBM; 5723 } 5724 5725 /* 5726 * Retrieve the average noise (in dBm) among receivers. 5727 */ 5728 static int 5729 iwn_get_noise(const struct iwn_rx_general_stats *stats) 5730 { 5731 int i, total, nbant, noise; 5732 5733 total = nbant = 0; 5734 for (i = 0; i < 3; i++) { 5735 if ((noise = le32toh(stats->noise[i]) & 0xff) == 0) 5736 continue; 5737 total += noise; 5738 nbant++; 5739 } 5740 /* There should be at least one antenna but check anyway. */ 5741 return (nbant == 0) ? -127 : (total / nbant) - 107; 5742 } 5743 5744 /* 5745 * Compute temperature (in degC) from last received statistics. 5746 */ 5747 static int 5748 iwn4965_get_temperature(struct iwn_softc *sc) 5749 { 5750 struct iwn_ucode_info *uc = &sc->ucode_info; 5751 int32_t r1, r2, r3, r4, temp; 5752 5753 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5754 5755 r1 = le32toh(uc->temp[0].chan20MHz); 5756 r2 = le32toh(uc->temp[1].chan20MHz); 5757 r3 = le32toh(uc->temp[2].chan20MHz); 5758 r4 = le32toh(sc->rawtemp); 5759 5760 if (r1 == r3) /* Prevents division by 0 (should not happen). */ 5761 return 0; 5762 5763 /* Sign-extend 23-bit R4 value to 32-bit. */ 5764 r4 = ((r4 & 0xffffff) ^ 0x800000) - 0x800000; 5765 /* Compute temperature in Kelvin. */ 5766 temp = (259 * (r4 - r2)) / (r3 - r1); 5767 temp = (temp * 97) / 100 + 8; 5768 5769 DPRINTF(sc, IWN_DEBUG_ANY, "temperature %dK/%dC\n", temp, 5770 IWN_KTOC(temp)); 5771 return IWN_KTOC(temp); 5772 } 5773 5774 static int 5775 iwn5000_get_temperature(struct iwn_softc *sc) 5776 { 5777 int32_t temp; 5778 5779 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5780 5781 /* 5782 * Temperature is not used by the driver for 5000 Series because 5783 * TX power calibration is handled by firmware. 5784 */ 5785 temp = le32toh(sc->rawtemp); 5786 if (sc->hw_type == IWN_HW_REV_TYPE_5150) { 5787 temp = (temp / -5) + sc->temp_off; 5788 temp = IWN_KTOC(temp); 5789 } 5790 return temp; 5791 } 5792 5793 /* 5794 * Initialize sensitivity calibration state machine. 5795 */ 5796 static int 5797 iwn_init_sensitivity(struct iwn_softc *sc) 5798 { 5799 struct iwn_ops *ops = &sc->ops; 5800 struct iwn_calib_state *calib = &sc->calib; 5801 uint32_t flags; 5802 int error; 5803 5804 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5805 5806 /* Reset calibration state machine. */ 5807 memset(calib, 0, sizeof (*calib)); 5808 calib->state = IWN_CALIB_STATE_INIT; 5809 calib->cck_state = IWN_CCK_STATE_HIFA; 5810 /* Set initial correlation values. */ 5811 calib->ofdm_x1 = sc->limits->min_ofdm_x1; 5812 calib->ofdm_mrc_x1 = sc->limits->min_ofdm_mrc_x1; 5813 calib->ofdm_x4 = sc->limits->min_ofdm_x4; 5814 calib->ofdm_mrc_x4 = sc->limits->min_ofdm_mrc_x4; 5815 calib->cck_x4 = 125; 5816 calib->cck_mrc_x4 = sc->limits->min_cck_mrc_x4; 5817 calib->energy_cck = sc->limits->energy_cck; 5818 5819 /* Write initial sensitivity. */ 5820 if ((error = iwn_send_sensitivity(sc)) != 0) 5821 return error; 5822 5823 /* Write initial gains. */ 5824 if ((error = ops->init_gains(sc)) != 0) 5825 return error; 5826 5827 /* Request statistics at each beacon interval. */ 5828 flags = 0; 5829 DPRINTF(sc, IWN_DEBUG_CALIBRATE, "%s: sending request for statistics\n", 5830 __func__); 5831 return iwn_cmd(sc, IWN_CMD_GET_STATISTICS, &flags, sizeof flags, 1); 5832 } 5833 5834 /* 5835 * Collect noise and RSSI statistics for the first 20 beacons received 5836 * after association and use them to determine connected antennas and 5837 * to set differential gains. 5838 */ 5839 static void 5840 iwn_collect_noise(struct iwn_softc *sc, 5841 const struct iwn_rx_general_stats *stats) 5842 { 5843 struct iwn_ops *ops = &sc->ops; 5844 struct iwn_calib_state *calib = &sc->calib; 5845 struct ieee80211com *ic = &sc->sc_ic; 5846 uint32_t val; 5847 int i; 5848 5849 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 5850 5851 /* Accumulate RSSI and noise for all 3 antennas. */ 5852 for (i = 0; i < 3; i++) { 5853 calib->rssi[i] += le32toh(stats->rssi[i]) & 0xff; 5854 calib->noise[i] += le32toh(stats->noise[i]) & 0xff; 5855 } 5856 /* NB: We update differential gains only once after 20 beacons. */ 5857 if (++calib->nbeacons < 20) 5858 return; 5859 5860 /* Determine highest average RSSI. */ 5861 val = MAX(calib->rssi[0], calib->rssi[1]); 5862 val = MAX(calib->rssi[2], val); 5863 5864 /* Determine which antennas are connected. */ 5865 sc->chainmask = sc->rxchainmask; 5866 for (i = 0; i < 3; i++) 5867 if (val - calib->rssi[i] > 15 * 20) 5868 sc->chainmask &= ~(1 << i); 5869 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_XMIT, 5870 "%s: RX chains mask: theoretical=0x%x, actual=0x%x\n", 5871 __func__, sc->rxchainmask, sc->chainmask); 5872 5873 /* If none of the TX antennas are connected, keep at least one. */ 5874 if ((sc->chainmask & sc->txchainmask) == 0) 5875 sc->chainmask |= IWN_LSB(sc->txchainmask); 5876 5877 (void)ops->set_gains(sc); 5878 calib->state = IWN_CALIB_STATE_RUN; 5879 5880 #ifdef notyet 5881 /* XXX Disable RX chains with no antennas connected. */ 5882 sc->rxon->rxchain = htole16(IWN_RXCHAIN_SEL(sc->chainmask)); 5883 if (sc->sc_is_scanning) 5884 device_printf(sc->sc_dev, 5885 "%s: is_scanning set, before RXON\n", 5886 __func__); 5887 (void)iwn_cmd(sc, IWN_CMD_RXON, sc->rxon, sc->rxonsz, 1); 5888 #endif 5889 5890 /* Enable power-saving mode if requested by user. */ 5891 if (ic->ic_flags & IEEE80211_F_PMGTON) 5892 (void)iwn_set_pslevel(sc, 0, 3, 1); 5893 5894 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s: end\n",__func__); 5895 5896 } 5897 5898 static int 5899 iwn4965_init_gains(struct iwn_softc *sc) 5900 { 5901 struct iwn_phy_calib_gain cmd; 5902 5903 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5904 5905 memset(&cmd, 0, sizeof cmd); 5906 cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN; 5907 /* Differential gains initially set to 0 for all 3 antennas. */ 5908 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 5909 "%s: setting initial differential gains\n", __func__); 5910 return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1); 5911 } 5912 5913 static int 5914 iwn5000_init_gains(struct iwn_softc *sc) 5915 { 5916 struct iwn_phy_calib cmd; 5917 5918 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5919 5920 memset(&cmd, 0, sizeof cmd); 5921 cmd.code = sc->reset_noise_gain; 5922 cmd.ngroups = 1; 5923 cmd.isvalid = 1; 5924 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 5925 "%s: setting initial differential gains\n", __func__); 5926 return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1); 5927 } 5928 5929 static int 5930 iwn4965_set_gains(struct iwn_softc *sc) 5931 { 5932 struct iwn_calib_state *calib = &sc->calib; 5933 struct iwn_phy_calib_gain cmd; 5934 int i, delta, noise; 5935 5936 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5937 5938 /* Get minimal noise among connected antennas. */ 5939 noise = INT_MAX; /* NB: There's at least one antenna. */ 5940 for (i = 0; i < 3; i++) 5941 if (sc->chainmask & (1 << i)) 5942 noise = MIN(calib->noise[i], noise); 5943 5944 memset(&cmd, 0, sizeof cmd); 5945 cmd.code = IWN4965_PHY_CALIB_DIFF_GAIN; 5946 /* Set differential gains for connected antennas. */ 5947 for (i = 0; i < 3; i++) { 5948 if (sc->chainmask & (1 << i)) { 5949 /* Compute attenuation (in unit of 1.5dB). */ 5950 delta = (noise - (int32_t)calib->noise[i]) / 30; 5951 /* NB: delta <= 0 */ 5952 /* Limit to [-4.5dB,0]. */ 5953 cmd.gain[i] = MIN(abs(delta), 3); 5954 if (delta < 0) 5955 cmd.gain[i] |= 1 << 2; /* sign bit */ 5956 } 5957 } 5958 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 5959 "setting differential gains Ant A/B/C: %x/%x/%x (%x)\n", 5960 cmd.gain[0], cmd.gain[1], cmd.gain[2], sc->chainmask); 5961 return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1); 5962 } 5963 5964 static int 5965 iwn5000_set_gains(struct iwn_softc *sc) 5966 { 5967 struct iwn_calib_state *calib = &sc->calib; 5968 struct iwn_phy_calib_gain cmd; 5969 int i, ant, div, delta; 5970 5971 DPRINTF(sc, IWN_DEBUG_TRACE, "->Doing %s\n", __func__); 5972 5973 /* We collected 20 beacons and !=6050 need a 1.5 factor. */ 5974 div = (sc->hw_type == IWN_HW_REV_TYPE_6050) ? 20 : 30; 5975 5976 memset(&cmd, 0, sizeof cmd); 5977 cmd.code = sc->noise_gain; 5978 cmd.ngroups = 1; 5979 cmd.isvalid = 1; 5980 /* Get first available RX antenna as referential. */ 5981 ant = IWN_LSB(sc->rxchainmask); 5982 /* Set differential gains for other antennas. */ 5983 for (i = ant + 1; i < 3; i++) { 5984 if (sc->chainmask & (1 << i)) { 5985 /* The delta is relative to antenna "ant". */ 5986 delta = ((int32_t)calib->noise[ant] - 5987 (int32_t)calib->noise[i]) / div; 5988 /* Limit to [-4.5dB,+4.5dB]. */ 5989 cmd.gain[i - 1] = MIN(abs(delta), 3); 5990 if (delta < 0) 5991 cmd.gain[i - 1] |= 1 << 2; /* sign bit */ 5992 } 5993 } 5994 DPRINTF(sc, IWN_DEBUG_CALIBRATE | IWN_DEBUG_XMIT, 5995 "setting differential gains Ant B/C: %x/%x (%x)\n", 5996 cmd.gain[0], cmd.gain[1], sc->chainmask); 5997 return iwn_cmd(sc, IWN_CMD_PHY_CALIB, &cmd, sizeof cmd, 1); 5998 } 5999 6000 /* 6001 * Tune RF RX sensitivity based on the number of false alarms detected 6002 * during the last beacon period. 6003 */ 6004 static void 6005 iwn_tune_sensitivity(struct iwn_softc *sc, const struct iwn_rx_stats *stats) 6006 { 6007 #define inc(val, inc, max) \ 6008 if ((val) < (max)) { \ 6009 if ((val) < (max) - (inc)) \ 6010 (val) += (inc); \ 6011 else \ 6012 (val) = (max); \ 6013 needs_update = 1; \ 6014 } 6015 #define dec(val, dec, min) \ 6016 if ((val) > (min)) { \ 6017 if ((val) > (min) + (dec)) \ 6018 (val) -= (dec); \ 6019 else \ 6020 (val) = (min); \ 6021 needs_update = 1; \ 6022 } 6023 6024 const struct iwn_sensitivity_limits *limits = sc->limits; 6025 struct iwn_calib_state *calib = &sc->calib; 6026 uint32_t val, rxena, fa; 6027 uint32_t energy[3], energy_min; 6028 uint8_t noise[3], noise_ref; 6029 int i, needs_update = 0; 6030 6031 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s begin\n", __func__); 6032 6033 /* Check that we've been enabled long enough. */ 6034 if ((rxena = le32toh(stats->general.load)) == 0){ 6035 DPRINTF(sc, IWN_DEBUG_TRACE, "->%s end not so long\n", __func__); 6036 return; 6037 } 6038 6039 /* Compute number of false alarms since last call for OFDM. */ 6040 fa = le32toh(stats->ofdm.bad_plcp) - calib->bad_plcp_ofdm; 6041 fa += le32toh(stats->ofdm.fa) - calib->fa_ofdm; 6042 fa *= 200 * IEEE80211_DUR_TU; /* 200TU */ 6043 6044 if (fa > 50 * rxena) { 6045 /* High false alarm count, decrease sensitivity. */ 6046 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 6047 "%s: OFDM high false alarm count: %u\n", __func__, fa); 6048 inc(calib->ofdm_x1, 1, limits->max_ofdm_x1); 6049 inc(calib->ofdm_mrc_x1, 1, limits->max_ofdm_mrc_x1); 6050 inc(calib->ofdm_x4, 1, limits->max_ofdm_x4); 6051 inc(calib->ofdm_mrc_x4, 1, limits->max_ofdm_mrc_x4); 6052 6053 } else if (fa < 5 * rxena) { 6054 /* Low false alarm count, increase sensitivity. */ 6055 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 6056 "%s: OFDM low false alarm count: %u\n", __func__, fa); 6057 dec(calib->ofdm_x1, 1, limits->min_ofdm_x1); 6058 dec(calib->ofdm_mrc_x1, 1, limits->min_ofdm_mrc_x1); 6059 dec(calib->ofdm_x4, 1, limits->min_ofdm_x4); 6060 dec(calib->ofdm_mrc_x4, 1, limits->min_ofdm_mrc_x4); 6061 } 6062 6063 /* Compute maximum noise among 3 receivers. */ 6064 for (i = 0; i < 3; i++) 6065 noise[i] = (le32toh(stats->general.noise[i]) >> 8) & 0xff; 6066 val = MAX(noise[0], noise[1]); 6067 val = MAX(noise[2], val); 6068 /* Insert it into our samples table. */ 6069 calib->noise_samples[calib->cur_noise_sample] = val; 6070 calib->cur_noise_sample = (calib->cur_noise_sample + 1) % 20; 6071 6072 /* Compute maximum noise among last 20 samples. */ 6073 noise_ref = calib->noise_samples[0]; 6074 for (i = 1; i < 20; i++) 6075 noise_ref = MAX(noise_ref, calib->noise_samples[i]); 6076 6077 /* Compute maximum energy among 3 receivers. */ 6078 for (i = 0; i < 3; i++) 6079 energy[i] = le32toh(stats->general.energy[i]); 6080 val = MIN(energy[0], energy[1]); 6081 val = MIN(energy[2], val); 6082 /* Insert it into our samples table. */ 6083 calib->energy_samples[calib->cur_energy_sample] = val; 6084 calib->cur_energy_sample = (calib->cur_energy_sample + 1) % 10; 6085 6086 /* Compute minimum energy among last 10 samples. */ 6087 energy_min = calib->energy_samples[0]; 6088 for (i = 1; i < 10; i++) 6089 energy_min = MAX(energy_min, calib->energy_samples[i]); 6090 energy_min += 6; 6091 6092 /* Compute number of false alarms since last call for CCK. */ 6093 fa = le32toh(stats->cck.bad_plcp) - calib->bad_plcp_cck; 6094 fa += le32toh(stats->cck.fa) - calib->fa_cck; 6095 fa *= 200 * IEEE80211_DUR_TU; /* 200TU */ 6096 6097 if (fa > 50 * rxena) { 6098 /* High false alarm count, decrease sensitivity. */ 6099 DPRINTF(sc, IWN_DEBUG_CALIBRATE, 6100 "%s: CCK high false alarm count: %u\n", __func__, fa); 6101 calib->cck_state = IWN_CCK_STATE_HIFA; 6102 calib->low_fa = 0; 6103 6104 if (calib->cck_x4 > 160) { 6105 calib->noise_ref = noise_ref; 6106 if (calib->energy_cck > 2) 6107 dec(calib->energy_cck, 2, energy_min); 6108 } 6109 if (calib->cck_x4 < 160) { 6110 calib->cck_x4 = 161; 6111 needs_update = 1; 6112 } else 6113 inc(calib-